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WO2018105378A1 - Composition de cristaux liquides, élément d'affichage à cristaux liquides et écran à cristaux liquides - Google Patents

Composition de cristaux liquides, élément d'affichage à cristaux liquides et écran à cristaux liquides Download PDF

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WO2018105378A1
WO2018105378A1 PCT/JP2017/041789 JP2017041789W WO2018105378A1 WO 2018105378 A1 WO2018105378 A1 WO 2018105378A1 JP 2017041789 W JP2017041789 W JP 2017041789W WO 2018105378 A1 WO2018105378 A1 WO 2018105378A1
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group
carbon atoms
formula
liquid crystal
independently
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PCT/JP2017/041789
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Japanese (ja)
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橘内　崇
浩充 貴志
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Dic株式会社
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/06—Non-steroidal liquid crystal compounds
    • C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
    • C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
    • C09K19/12—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/06—Non-steroidal liquid crystal compounds
    • C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
    • C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes

Definitions

  • the present invention relates to a liquid crystal composition, a liquid crystal display element using the liquid crystal composition, and a liquid crystal display including the liquid crystal display element.
  • a liquid crystal display element includes a liquid crystal layer sandwiched between a pair of substrates, and the liquid crystal layer includes a liquid crystal composition.
  • Such liquid crystal display elements are widely used in image display devices such as liquid crystal televisions, computer monitors, mobile phones, information terminals, and game machines.
  • image display devices such as liquid crystal televisions, computer monitors, mobile phones, information terminals, and game machines.
  • a typical display method of the liquid crystal display element for example, there are a TN (twisted nematic) type, an STN (super twisted nematic) type, an ECB (field effect birefringence) type, and the like.
  • An active matrix liquid crystal display element using TFTs includes a VA type that vertically aligns liquid crystal molecules, an IPS (in-plane switching) type that horizontally aligns liquid crystal molecules, and an FFS (fringe) that is a kind thereof. Field switching) type.
  • Nematic liquid crystals are used for these liquid crystal display elements, and liquid crystal compositions having a positive or negative dielectric anisotropy ( ⁇ ) are used depending on the type of the element.
  • Patent Document 1 discloses a liquid crystal composition having a negative value of dielectric anisotropy ( ⁇ ) useful for providing a matrix liquid crystal display having a large specific resistance that enables various halftone displays. Is disclosed.
  • the liquid crystal composition used in the liquid crystal display element is stable against external factors such as moisture, air, heat, and light, and exhibits a liquid crystal phase in the widest possible temperature range centering on room temperature, and has low viscosity. And a low driving voltage is required. Furthermore, the liquid crystal composition is made from several to several tens of kinds of compounds in order to adjust the dielectric anisotropy ( ⁇ ) or the refractive index anisotropy ( ⁇ n) to an optimum value for each display element. It is configured. In addition, from the setting of ⁇ n ⁇ d, which is the product of ⁇ n and the cell gap (d), it is necessary to adjust ⁇ n of the liquid crystal composition to an appropriate range according to the cell gap. In addition, when applying a liquid crystal display element to a television or the like, since high-speed response is important, a liquid crystal composition having a small rotational viscosity ( ⁇ 1 ) is required.
  • liquid crystal composition disclosed in Patent Document 1 has many examples of negative dielectric anisotropy ( ⁇ ) and relatively small refractive index anisotropy ( ⁇ n), and has low viscosity and response. Inadequate in terms of speed.
  • the present invention has been made in view of the above circumstances, has a large refractive index anisotropy ( ⁇ n), is excellent in low viscosity, and has a negative dielectric anisotropy ( ⁇ ) value. It is an object of the present invention to provide a liquid crystal composition used in a liquid crystal display element having a high response speed, a liquid crystal display element having a high response speed using the liquid crystal composition, and a liquid crystal display including the liquid crystal display element.
  • the present invention is a liquid crystal composition having a negative dielectric anisotropy ( ⁇ ) value
  • a liquid crystal composition comprising one or more compounds represented by the following general formula (i) and one or more compounds represented by the following general formula (ii): provide.
  • R i1 and R i2 each independently represents an alkenyl group having 2 to 8 carbon atoms
  • R ii1 and R ii2 each independently represent an alkyl group having 1 to 8 carbon atoms
  • One or more hydrogen atoms in the cyclohexane ring in the general formula (ii) may be each independently substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms.
  • two or more non-adjacent —CH 2 — are each independently replaced by —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—.
  • One or more hydrogen atoms in the benzene ring in the general formula (ii) may be each independently substituted with an alkyl group having 1 to 8 carbon atoms.
  • two or more non-adjacent —CH 2 — may be each independently substituted by —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—.
  • the present invention also provides a liquid crystal display element using the liquid crystal composition.
  • the present invention also provides a liquid crystal display including the liquid crystal display element.
  • a liquid crystal composition having a large refractive index anisotropy ( ⁇ n), an excellent low viscosity, and a negative dielectric anisotropy ( ⁇ ) value, and a response using the liquid crystal composition
  • ⁇ n refractive index anisotropy
  • ⁇ negative dielectric anisotropy
  • the liquid crystal composition of the present invention is a liquid crystal composition having a negative value of dielectric anisotropy ( ⁇ ), and one or more of the compounds represented by the general formula (i), and the general formula It is characterized by containing one or more compounds represented by (ii).
  • R i1 and R i2 each independently represents an alkenyl group having 2 to 8 carbon atoms.
  • R i1 and R i2 may each independently be an alkenyl group having 2 to 6 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkenyl group having 2 to 4 carbon atoms. It may be an alkenyl group having 2 to 3 carbon atoms, an ethenyl group (that is, a vinyl group) or a 1-propenyl group.
  • the alkenyl group is preferably selected from groups represented by any of formulas (R1) to (R5).
  • R i1 and R i2 each independently represent the formula (R1) To a group represented by any one of formulas (R5).
  • the compound represented by the general formula (i) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the lower limit of the preferable content of the compound represented by the general formula (i) with respect to the total amount of the composition of the present invention is 1%, 3%, 5%, 7%, 10%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 35%.
  • the upper limit of the preferable content is 60%, 55%, 50%, 45%, 42%, 40%, and 38% with respect to the total amount of the composition of the present invention. %, 35%, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%. In the present specification, “%” represents “mass%” unless otherwise specified.
  • the compound represented by the general formula (i) is preferably a compound represented by the general formula (i-1).
  • R i11 and R i12 each independently represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms.
  • R i11 and R i12 may each independently be a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, or a hydrogen atom or an alkyl group having 1 to 2 carbon atoms. It may be a hydrogen atom or a methyl group. More preferably from the viewpoint of response speed at least one of R i11 and R i12 are hydrogen atom, it is particularly preferable from the viewpoint of response speed R i11 and R i12 are hydrogen atoms.
  • the lower limit of the preferable content of the compound represented by the formula (i-1) with respect to the total amount of the composition of the present invention is 1%, 3%, 5%, 7% 10%, 12%, 15%, 17%, 19%, 20%, 23%, 25%, 27%, 30% 35%.
  • the upper limit of the preferable content is 60%, 55%, 50%, 45%, 42%, 40%, and 38% with respect to the total amount of the composition of the present invention. %, 35%, 33%, 30%, 28%, 25%, 23%, 22%, 21%, and 20%.
  • the compound represented by general formula (i) is preferably a compound selected from the group of compounds represented by general formula (i-1-1) to formula (i-1-8). -1-1) to compounds represented by formula (i-1-6) are preferred, and compounds represented by formulas (i-1-1) to (i-1-3) are preferred. .
  • the general formula (i-1-1) is more preferable.
  • the compound represented by the general formula (i-1) is preferably a compound selected from the compound group represented by the general formula (L-1-6).
  • R L17 and R L18 each independently represent a methyl group or a hydrogen atom.
  • the lower limit of the preferable content of the compound represented by the formula (L-1-6) with respect to the total amount of the composition of the present invention is 1%, 5%, 10%, 15% 17%, 20%, 23%, 25%, 27%, 30%, 35%.
  • the upper limit of the preferable content is 60%, 55%, 50%, 45%, 42%, 40%, and 38% with respect to the total amount of the composition of the present invention. %, 35%, 33%, and 30%.
  • the compound represented by the general formula (L-1-6) is a compound selected from the group of compounds represented by the formula (L-1-6.1) to the formula (L-1-6.3).
  • the compound represented by formula (L-1-6.1) is particularly preferable.
  • R ii1 and R ii2 each independently represents an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH 2 — in the alkyl group are each Independently, it may be substituted by —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—.
  • R ii1 and R ii2 may each independently be an alkyl group having 1 to 6 carbon atoms, an alkyl group having 1 to 5 carbon atoms, or an alkyl group having 1 to 4 carbon atoms.
  • an alkenyl group having 2 to 9 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, or an alkenyl group having 2 to 4 carbon atoms It may be an alkenyl group having 2 to 3 carbon atoms, an ethenyl group (that is, a vinyl group) or a 1-propenyl group, an alkoxy group having 1 to 7 carbon atoms, It may be an alkoxy group having 1 to 6 atoms, an alkoxy group having 1 to 4 carbon atoms, or an alkoxy group having 1 to 3 carbon atoms.
  • One or more hydrogen atoms in the cyclohexane ring in the general formula (ii) may be each independently substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms. And one or more non-adjacent two or more —CH 2 — are each independently replaced by —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—. May have been
  • One or two or more hydrogen atoms in the benzene ring in the general formula (ii) may be each independently substituted with an alkyl group having 1 to 8 carbon atoms.
  • two or more non-adjacent —CH 2 — may be each independently substituted by —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—. Good.
  • the compound represented by the general formula (ii) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the lower limit of the preferable content of the compound represented by the general formula (ii) with respect to the total amount of the composition of the present invention is 3%, 5%, 7%, and 10%.
  • the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%, 11%, and 10%.
  • the compound represented by the general formula (ii) may be a compound represented by the following general formula (ii-1).
  • R ii1 and R ii2 each independently represents an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH 2 — in the alkyl group are each independently —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO— may be substituted, and X ii1 to X ii14 each independently represents a hydrogen atom or a halogen atom.
  • an alkyl group having 1 to 8 carbon atoms, and one or non-adjacent two or more —CH 2 — in the alkyl group are each independently —CH ⁇ CH—, —C ⁇ C—, (It may be substituted by —O—, —CO—, —COO— or —OCO—).
  • R ii1 and R ii2 may each independently be an alkyl group having 1 to 6 carbon atoms, may be an alkyl group having 1 to 4 carbon atoms, It may be an alkyl group having 1 to 3 atoms, an alkyl group having 1 to 2 carbon atoms, a methyl group, or an alkoxy group having 1 to 7 carbon atoms. Alternatively, it may be an alkoxy group having 1 to 5 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, or an alkoxy group having 1 to 3 carbon atoms.
  • R ii1 is preferably an alkyl group having 1 to 8 carbon atoms, and R ii2 is preferably an alkoxy group having 1 to 7 carbon atoms, R ii1 is an alkyl group having 1 to 6 carbon atoms, and R ii2 is preferably an alkoxy group having 1 to 5 carbon atoms, R ii1 is an alkyl group having 1 to 4 carbon atoms, and R ii2 is an alkoxy group having 1 to 3 carbon atoms.
  • R ii1 is an alkyl group having 1 to 3 carbon atoms
  • R ii2 is an alkoxy group having 1 to 2 carbon atoms.
  • X ii1 to X ii14 are each independently preferably a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, and preferably a hydrogen atom or an alkyl group having 1 to 6 carbon atoms. More preferably, it is more preferably a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and even more preferably a hydrogen atom or an alkyl group having 1 to 2 carbon atoms. An atom or a methyl group is even more preferable, and a hydrogen atom is particularly preferable.
  • the lower limit of the preferable content of the compound represented by the general formula (ii-1) with respect to the total amount of the composition of the present invention is 1%, 3%, 5%, 7% Yes, 10%, 13%, 15%.
  • the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%, 11%, and 10%.
  • the compound represented by the general formula (ii-1) is preferably a compound represented by the following general formula (L-2).
  • R L21 and R L22 each independently represents an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH 2 — in the alkyl group are each independently And may be substituted by —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—.
  • R L21 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms
  • R L22 is an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or a carbon atom.
  • An alkoxy group of 1 to 4 is preferable.
  • R L21 is preferably an alkyl group, and R L22 is preferably an alkoxy group.
  • R L21 is preferably an alkyl group having 1 to 5 carbon atoms, and R L22 is preferably an alkoxy group having 1 to 4 carbon atoms.
  • the compound represented by the general formula (L-2) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the lower limit of the preferable content of the compound represented by the formula (L-2) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5% 7%, 10%, 13%, 15%.
  • the upper limit of the preferable content is 30%, 27%, 25%, 23%, 20%, 17%, and 15% with respect to the total amount of the composition of the present invention. %, 13%, 10%, 8%, 7%, 6%, 5%, 3%.
  • the compound represented by the general formula (L-2) is represented by the formula (L-2) to the formula (L-2.6).
  • the compound chosen from the compound group represented is mentioned.
  • R L21 is preferably an alkyl group
  • R L22 is preferably an alkoxy group.
  • composition of the present invention preferably contains one or more compounds selected from the group consisting of compounds represented by formulas (N-1), (N-2) and (N-3). . These compounds correspond to dielectrically negative compounds (the sign of ⁇ is negative and the absolute value is greater than 2).
  • R N11 , R N12 , R N21 , R N22 , R N31 and R N32 each independently represents an alkyl group having 1 to 8 carbon atoms, and one or non-adjacent 2 in the alkyl group
  • Two or more —CH 2 — may be each independently substituted by —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—
  • a N11 , A N12 , A N21 , A N22 , A N31, and A N32 are each independently (a) a 1,4-cyclohexylene group (one —CH 2 — or adjacent to each other in this group).
  • —CH 2 — that are not present may be replaced by —O—.
  • B 1,4-phenylene group (one —CH ⁇ present in this group or two or more —CH ⁇ that are not adjacent to each other may be replaced by —N ⁇ )
  • C Naphthalene-2,6-diyl group, 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or decahydronaphthalene-2,6-diyl group (naphthalene-2,6-diyl group or One —CH ⁇ present in the 1,2,3,4-tetrahydronaphthalene-2,6-diyl group or two or more non-adjacent —CH ⁇ may be replaced by —N ⁇ .
  • (d) represents a group selected from the group consisting of 1,4-cyclohexenylene groups, one or two of the above groups (a), (b), (c) and (d)
  • Two or more hydrogen atoms may be independently substituted with a cyano group, a fluorine atom or a chlorine atom
  • Z N11 , Z N12 , Z N21 , Z N22 , Z N31 and Z N32 are each independently a single bond, —CH 2 CH 2 —, — (CH 2 ) 4 —, —OCH 2 —, —CH 2 O—.
  • XN21 represents a hydrogen atom or a fluorine atom
  • T N31 represents —CH 2 — or an oxygen atom
  • n N11 , n N12 , n N21 , n N22 , n N31, and n N32 each independently represent an integer of 0 to 3, but n N11 + n N12 , n N21 + n N22, and n N31 + n N32 are each independently In the case where there are a plurality of A N11 to A N32 and Z N11 to Z N32 , they may be the same or different, but the compound represented by the general formula (ii) except for. )
  • the compounds represented by the general formulas (N-1), (N-2) and (N-3) are preferably compounds having a negative ⁇ and an absolute value larger than 3.
  • the compounds represented by the general formulas (N-1), (N-2), and (N-3) are straight ring compounds, that is, a plurality of cyclic groups, and the cyclic groups do not intervene via a linking group.
  • the composition of the present invention preferably comprises a straight ring compound.
  • R N11 , R N12 , R N21 , R N22 , R N31 and R N32 each independently represent 1 to 8 carbon atoms.
  • An alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, or an alkenyloxy group having 2 to 8 carbon atoms preferably an alkyl group having 1 to 5 carbon atoms.
  • An alkoxy group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms or an alkenyloxy group having 2 to 5 carbon atoms is preferable, and an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms is preferable.
  • an alkyl group having 2 to 5 carbon atoms or an alkenyl group having 2 to 3 carbon atoms is more preferable, and an alkenyl group having 3 carbon atoms (propenyl group
  • the ring structure to which it is bonded is a phenyl group (aromatic)
  • An alkenyl group having 4 to 5 atoms is preferable
  • the ring structure to which the alkenyl group is bonded is a saturated ring structure such as cyclohexane, pyran and dioxane
  • a straight-chain alkoxy group having 1 to 4 carbon atoms and a straight-chain alkenyl group having 2 to 5 carbon atoms are preferred.
  • the total of carbon atoms and oxygen atoms, if present is preferably 5 or less, and is preferably linear.
  • the alkenyl group is preferably selected from groups represented by any of the formulas (R1) to (R5). (The black dots in each formula represent carbon atoms in the ring structure.)
  • a N11 , A N12 , A N21 , A N22 , A N31, and A N32 are preferably aromatic when it is required to increase ⁇ n independently, and in order to improve the response speed, fat
  • fat Preferably a trans-1,4-cyclohexylene group, 1,4-phenylene group, 2-fluoro-1,4-phenylene group, 3-fluoro-1,4-phenylene group, 3,5 -Difluoro-1,4-phenylene group, 2,3-difluoro-1,4-phenylene group, 1,4-cyclohexenylene group, 1,4-bicyclo [2.2.2] octylene group, piperidine-1 , 4-diyl group, naphthalene-2,6-diyl group, decahydronaphthalene-2,6-diyl group or 1,2,3,4-tetrahydronaphthalene-2,6-diyl group Preferred, it is more preferable that represents the following
  • Z N11, Z N12, Z N21 , Z N22, Z N31 and Z N32 -CH 2 each independently O -, - CF 2 O - , - CH 2 CH 2 -, - CF 2 CF 2 - or a single bond preferably represents an, -CH 2 O -, - CH 2 CH 2 - or a single bond is more preferable, -CH 2 O-or a single bond is particularly preferred.
  • XN21 is preferably a fluorine atom.
  • T N31 is preferably an oxygen atom.
  • n N11 + n N12 , n N21 + n N22 and n N31 + n N32 are preferably 1 or 2, a combination in which n N11 is 1 and n N12 is 0, a combination in which n N11 is 2 and n N12 is 0, n A combination in which N11 is 1 and n N12 is 1, a combination in which n N11 is 2 and n N12 is 1, a combination in which n N21 is 1 and n N22 is 0, n N21 is 2 and n N22 is n A combination in which n N31 is 1 and n N32 is 0, and a combination in which n N31 is 2 and n N32 is 0 are preferable.
  • the lower limit of the preferable content of the compound represented by the formula (N-1) with respect to the total amount of the composition of the present invention is 1%, 10%, 20%, 30% , 40%, 50%, 55%, 60%, 65%, 70%, 75%, and 80%.
  • the upper limit of the preferred content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%, 20% It is.
  • the lower limit of the preferable content of the compound represented by the formula (N-2) with respect to the total amount of the composition of the present invention is 1%, 10%, 20%, 30% , 40%, 50%, 55%, 60%, 65%, 70%, 75%, and 80%.
  • the upper limit of the preferred content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%, 20% It is.
  • the lower limit of the preferable content of the compound represented by the formula (N-3) with respect to the total amount of the composition of the present invention is 1%, 10%, 20%, 30% , 40%, 50%, 55%, 60%, 65%, 70%, 75%, and 80%.
  • the upper limit of the preferred content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, 25%, 20% It is.
  • the lower limit value is preferably low and the upper limit value is preferably low. Moreover, maintaining high T NI of the compositions of the present invention, it is preferred if good composition temperature stability is required a low upper limit lower the lower limit of the above. When it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable that the above lower limit value is increased and the upper limit value is high.
  • the composition of the present invention has the general formula (N-1) among the three compounds represented by the general formulas (N-1), (N-2) and (N-3) from the viewpoint of reliability and viscosity. It is more preferable that the compound represented by these is further included.
  • composition of the present invention more preferably contains one or more compounds selected from the group consisting of compounds represented by formula (N-1).
  • Examples of the compound represented by the general formula (N-1) include compounds represented by the following general formulas (N-1a) to (N-1g).
  • R N11 and R N12 represent the same meaning as R N11 and R N12 in formula (N-1), n Na11 represents 0 or 1, n Nb11 represents 1 or 2, and n Nc11 represents Represents 0 or 1, n Nd11 represents 1 or 2, n Ne11 represents 1 or 2, n Nf12 represents 1 or 2, n Ng11 represents 1 or 2, A Ne11 represents trans-1,4 - represents a cyclohexylene group or 1,4-phenylene group cyclohexylene, a NG11 xylene group, represent a 1,4-cyclohexenylene group or a 1,4-phenylene group one at least trans-1,4-cyclohexylene Represents a 1,4-cyclohexenylene group, and Z Ne 11 represents a single bond or an ethylene group, but at least one represents an ethylene group.)
  • composition of the present invention is preferably composed of a straight ring compound having a plurality of cyclic groups and in which the cyclic groups are directly covalently bonded without a linking group.
  • the compound represented by the general formula (N-1) is preferably a compound selected from the group of compounds represented by the general formulas (N-1a) to (N-1c) and (N-1g).
  • the compounds represented by formula (N-1) are represented by formulas (N-1-1) to (N-1-5), formulas (N-1-10) to (N— 1-18) and a compound selected from the group of compounds represented by formulas (N-1-20) to (N-1-22) are preferred, and formulas (N-1-1) to (N More preferably, the compound is selected from the group of compounds represented by -1-5).
  • the compound represented by the general formula (N-1-1) is the following compound.
  • R N111 and R N112 each independently represent the same meaning as R N11 and R N12 in formula (N-1)).
  • R N111 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably a propyl group, a pentyl group or a vinyl group.
  • RN112 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group or a butoxy group.
  • the compound represented by the general formula (N-1-1) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the lower limit of the preferable content of the compound represented by the formula (N-1-1) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35%.
  • the upper limit of the preferable content is 50%, 40%, 38%, 35%, 33%, 30%, and 28% with respect to the total amount of the composition of the present invention. %, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6% %, 5%, 3%.
  • the compound represented by the general formula (N-1-1) is a compound selected from the group of compounds represented by the formula (N-1-1.1) to the formula (N-1-1.22).
  • it is a compound represented by the formulas (N-1-1.1) to (N-1-1.4), and the formula (N-1-1.1) and the formula (N
  • the compound represented by -1-1.3) is preferable.
  • the compounds represented by formulas (N-1-1.1) to (N-1-1.22) can be used alone or in combination.
  • the lower limit of the preferred content of these compounds alone or with respect to the total amount is 5%, 10%, 13%, 15%, 17%, 20%, 23% 25% 27% 30% 33% 35%
  • the upper limit of the preferable content is 50%, 40%, 38%, 35%, 33%, 30%, and 28% with respect to the total amount of the composition of the present invention. %, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6% %, 5%, 3%.
  • the compound represented by the general formula (N-1-2) is the following compound.
  • R N121 to R N122 each independently represents an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH 2 — in the alkyl group are each independently — Optionally substituted by CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—,
  • One or two or more hydrogen atoms in the cyclohexane ring may be independently substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms, and one or non-adjacent 2 in the alkyl group may be substituted.
  • Two or more —CH 2 — may be each independently substituted by —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—,
  • One hydrogen atom in the benzene ring may be substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms, and one or non-adjacent two or more —CH 2 — in the alkyl group is Each may be independently substituted with —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—.
  • RN121 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, a butyl group or a pentyl group.
  • RN122 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and may be a methyl group, an ethyl group, a propyl group, a methoxy group, an ethoxy group, or Propoxy groups are preferred.
  • the compound represented by the general formula (N-1-2) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the lower limit of the preferable content of the compound represented by the formula (N-1-2) with respect to the total amount of the composition of the present invention is 5%, 7%, 10%, 13% 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35%, 37% 40% and 42%.
  • the upper limit of the preferable content is 50%, 48%, 45%, 43%, 40%, 38%, and 35% with respect to the total amount of the composition of the present invention. %, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10% %, 8%, 7%, 6%, 5%.
  • the compound represented by the general formula (N-1-2) is preferably a compound represented by the following general formula (N-2-1).
  • R N1211 ⁇ R N1212 each independently represent an alkyl group having 1 to 8 carbon atoms, one or non-adjacent two or more -CH 2 in the alkyl group - it is independently - Optionally substituted by CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—
  • X N1211 to X N1212 each independently represents a hydrogen atom, a halogen atom, or an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH 2 — in the alkyl group are each Independently substituted by —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—, but at least one of X N1211 to X N121212 Is a hydrogen atom.
  • R N1211 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, a butyl group or a pentyl group.
  • R N1212 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and may be a methyl group, an ethyl group, a propyl group, a methoxy group, an ethoxy group, or Propoxy groups are preferred.
  • X N1211 to X N1212 are preferably a hydrogen atom, a halogen atom, an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 7 carbon atoms, and a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, An alkyl group having 1 to 6 carbon atoms or an alkoxy group having 1 to 5 carbon atoms is preferable, and a hydrogen atom is particularly preferable.
  • the compound represented by the general formula (N-1-2-1) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the lower limit of the preferable content of the compound represented by the formula (N-1-2-1) with respect to the total amount of the composition of the present invention is 5%, 7%, 10%, 13%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35%, 37%, 40% and 42%.
  • the upper limit of the preferable content is 50%, 48%, 45%, 43%, 40%, 38%, and 35% with respect to the total amount of the composition of the present invention. %, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10% %, 8%, 7%, 6%, 5%.
  • the compound represented by the general formula (N-1-2) is a compound selected from the group of compounds represented by the formula (N-1-2.1) to the formula (N-1-2.22). It is preferable that the formula (N-1-2.3) to the formula (N-1-2.7), the formula (N-1-2.10), the formula (N-1-2.11), the formula A compound represented by formula (N-1-2.13) and formula (N-1-2.20) is preferred.
  • formula (N-1-2.3) is preferably a compound represented by the formula (N-1-2.7) from when emphasizing improvements in T NI formula (N-1-2.10), formula (N-1-2.11) And a compound represented by the formula (N-1-2.13), and when emphasizing improvement in response speed, the compound represented by the formula (N-1-2.20) Is preferred.
  • the compounds represented by formula (N-1-2.1) to formula (N-1-2.22) can be used alone or in combination.
  • the lower limit of the preferable content of these compounds alone or with respect to the total amount of is 5%, 10%, 13%, 15%, 17%, 20%, 23 %, 25%, 27%, 30%, 33%, and 35%.
  • the upper limit of the preferable content is 50%, 40%, 38%, 35%, 33%, 30%, and 28% with respect to the total amount of the composition of the present invention. %, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6% %, 5%, 3%.
  • the compound represented by the general formula (N-1-3) is the following compound.
  • R N131 to R N132 each independently represents an alkyl group having 1 to 8 carbon atoms, and one or two or more adjacent —CH 2 — in the alkyl group are each independently — Optionally substituted by CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—,
  • One or two or more hydrogen atoms in the cyclohexane ring may be independently substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms, and one or non-adjacent 2 in the alkyl group may be substituted.
  • Two or more —CH 2 — may be each independently substituted by —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—,
  • Each hydrogen atom in the benzene ring may be independently substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms, and one or non-adjacent two or more — CH 2 — may be each independently substituted with —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—.
  • R N131 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
  • R N132 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 3 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably a 1-propenyl group, an ethoxy group, a propoxy group or a butoxy group.
  • the compound represented by the general formula (N-1-3) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the lower limit of the preferable content of the compound represented by the formula (N-1-3) with respect to the total amount of the composition of the present invention is 3%, 5%, 10%, 13% 15%, 17%, 20%.
  • the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
  • the compound represented by the general formula (N-1-3) is preferably a compound represented by the following general formula (N-1-3-1).
  • R N1311 to R N1312 each independently represent an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH 2 — in the alkyl group are each independently — Optionally substituted by CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—,
  • X N1311 to X N1316 each independently represent a hydrogen atom, a halogen atom, or an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH 2 — in the alkyl group are each Independently substituted by —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—, but at least three of X N1311 to X N1314 Is a hydrogen atom, and at least one of X N1315 to X N1316 is a hydrogen atom.
  • R N1311 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
  • R N1312 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably a 1-propenyl group, an ethoxy group, a propoxy group, or a butoxy group. .
  • X N1311 to X N1316 are preferably a hydrogen atom, a halogen atom, an alkyl group having 1 to 8 carbon atoms, or an alkoxy group having 1 to 7 carbon atoms, a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, It is more preferably an alkyl group having 1 to 6 carbon atoms or an alkoxy group having 1 to 5 carbon atoms, and particularly preferably a hydrogen atom.
  • the compound represented by the general formula (N-1-2-1) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the lower limit of the preferable content of the compound represented by the formula (N-1-3-1) with respect to the total amount of the composition of the present invention is 5%, 7%, 10%, 13%, 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, 35%, 37%, 40% and 42%.
  • the upper limit of the preferable content is 50%, 48%, 45%, 43%, 40%, 38%, and 35% with respect to the total amount of the composition of the present invention. %, 33%, 30%, 28%, 25%, 23%, 20%, 18%, 15%, 13%, 10% %, 8%, 7%, 6%, 5%.
  • the compound represented by the general formula (N-1-3) is a compound selected from the group of compounds represented by the formula (N-1-3.1) to the formula (N-1-3.21). It is preferably a compound represented by the formulas (N-1-3.1) to (N-1-3.7) and the formula (N-1-3.21). -1-3.1), formula (N-1-3.2), formula (N-1-3.3), formula (N-1-3.4) and formula (N-1-3.6) ) Is preferred.
  • the compound represented by the general formula (N-1-4) is the following compound.
  • R N141 and R N142 each independently represents the same meaning as R N11 and R N12 in the general formula (N-1).
  • R N141 and R N142 are each independently an alkyl group having 1 to 5 carbon atoms, an alkenyl group or an alkoxy group having 1 to 4 carbon atoms carbon atoms 4-5 preferably a methyl group, a propyl group, an ethoxy Group or butoxy group is preferred.
  • the compound represented by the general formula (N-1-4) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the lower limit of the preferable content of the compound represented by the general formula (N-1-4) with respect to the total amount of the composition of the present invention is 3%, 5%, 7%, 10% %, 13%, 15%, 17%, and 20%.
  • the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%, 11%, 10%, and 8%.
  • the compound represented by the general formula (N-1-4) is a compound selected from the group of compounds represented by the formula (N-1-4.1) to the formula (N-1-4.14).
  • it is a compound represented by the formulas (N-1-4.1) to (N-1-4.4), and the formula (N-1-4.1) and the formula (N -1-4.2) and compounds represented by formula (N-1-4.4) are preferred.
  • the compounds represented by the formulas (N-1-4.1) to (N-1-4.14) can be used alone or in combination, but the compounds of the present invention
  • the lower limit of the preferable content of these compounds alone or with respect to the total amount is 3%, 5%, 7%, 10%, 13%, 15%, 17% And 20%.
  • the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%, 11%, 10%, and 8%.
  • the compound represented by the general formula (N-1-5) is the following compound.
  • R N151 to R N152 each independently represents an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH 2 — in the alkyl group are each independently Optionally substituted by CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—,
  • Each hydrogen atom in the benzene ring may be independently substituted with a halogen atom or an alkyl group having 1 to 8 carbon atoms, and one or non-adjacent two or more — CH 2 — may be each independently substituted with —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—.
  • R N151 and R N152 are each independently an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethyl group, a propyl group, or a butyl group. Is preferred.
  • the compound represented by the general formula (N-1-5) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the lower limit of the preferable content of the compound represented by the formula (N-1-5) with respect to the total amount of the composition of the present invention is 5%, 8%, 10%, 13% 15%, 17%, 20%.
  • the upper limit of the preferable content is 35%, 33%, 30%, 28%, 25%, 23%, and 20% with respect to the total amount of the composition of the present invention. %, 18%, 15% and 13%.
  • the compound represented by the general formula (N-1-5) is preferably a compound represented by the following general formula (N-1-5-1).
  • R N1511 to R N1512 each independently represents an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH 2 — in the alkyl group are each independently — Optionally substituted by CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—,
  • X N1511 to X N15110 each independently represents a hydrogen atom, a halogen atom, or an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH 2 — in the alkyl group are each Independently substituted by —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—, but at least three of X N1511 to X N1514 Are hydrogen atoms, at least three of X N1517 to X N15110 are hydrogen atoms, and at least one
  • R N1511 and R N1512 are each independently preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and an ethyl group, a propyl group, or butyl Groups are preferred.
  • X N1511 to XN15110 are preferably a hydrogen atom, a halogen atom, an alkyl group having 1 to 8 carbon atoms or an alkoxy group having 1 to 7 carbon atoms, and include a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, An alkyl group having 1 to 6 carbon atoms or an alkoxy group having 1 to 5 carbon atoms is preferable, and any one of X N1511 to XN1514 is a hydrogen atom or a fluorine atom, and the remaining three Is preferably a hydrogen atom, any one of X N1517 to X N15110 is preferably a hydrogen atom or a fluorine atom, and the remaining three are preferably hydrogen atoms, and of X N1515 to X N1516 of is any one hydrogen atom or a fluorine atom, preferably the remaining one is a hydrogen atom, the X N1511 ⁇ X
  • the compound represented by the general formula (N-1-5-1) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the lower limit of the preferable content of the compound represented by the formula (N-1-5-1) with respect to the total amount of the composition of the present invention is 5%, 8%, 10%, 13%, 15%, 17% and 20%.
  • the upper limit of the preferable content is 35%, 33%, 30%, 28%, 25%, 23%, and 20% with respect to the total amount of the composition of the present invention. %, 18%, 15% and 13%.
  • the compound represented by the general formula (N-1-5) is a compound selected from the group of compounds represented by the formula (N-1-5.1) to the formula (N-1-5.6). It is preferable that the compound represented by formula (N-1-5.1), formula (N-1-5.2) and formula (N-1-5.4) is preferable.
  • the compounds represented by formula (N-1-5.1), formula (N-1-5.2) and formula (N-1-5.4) may be used alone or in combination.
  • the lower limit of the preferred content of these compounds alone or with respect to the total amount of the composition of the present invention is 5%, 8%, 10%, 13%, 15%, 17% and 20%.
  • the upper limit of the preferable content is 35%, 33%, 30%, 28%, 25%, 23%, and 20% with respect to the total amount of the composition of the present invention. %, 18%, 15% and 13%.
  • the compound represented by the general formula (N-1-10) is the following compound.
  • R N1101 and R N1102 each independently represent the same meaning as R N11 and R N12 in formula (N-1).
  • R N1101 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, a butyl group, a vinyl group or a 1-propenyl group.
  • R N1102 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.
  • the compound represented by the general formula (N-1-10) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the lower limit of the preferable content of the compound represented by the formula (N-1-10) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
  • the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
  • the compound represented by the general formula (N-1-10) is a compound selected from the group of compounds represented by the formula (N-1-10.1) to the formula (N-1-10.14).
  • the formulas (N-1-10.1) to (N-1-10.5) are represented by formulas (N-1-10.11) and formulas (N-1-10.12)
  • the compound is of the formula (N-1-10.1), formula (N-1-10.2), formula (N-1-10.11) and formula (N-1-10.12) The compound represented by these is preferable.
  • the compounds represented by formula (N-1-10.1), formula (N-1-10.2), formula (N-1-10.11) and formula (N-1-10.12) are singly Can be used in combination or in combination, but the lower limit of the preferred content of these compounds alone or with respect to the total amount of the composition of the present invention is 5%, 10% 13%, 15%, 17%, 20%.
  • the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
  • the compound represented by the general formula (N-1-11) is the following compound.
  • R N1111 and R N1112 each independently represent the same meaning as R N11 and R N12 in formula (N-1).
  • R N1111 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, a butyl group, a vinyl group or a 1-propenyl group.
  • R N1112 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group or a butoxy group.
  • the compound represented by the general formula (N-1-11) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the lower limit of the preferable content of the compound represented by the formula (N-1-11) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
  • the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
  • the compound represented by the general formula (N-1-11) is a compound selected from the group of compounds represented by the formula (N-1-11.1) to the formula (N-1-11.14).
  • it is a compound represented by the formulas (N-1-11.1) to (N-1-11.14), and the formula (N-1-11.2) and the formula (N
  • the compound represented by 1-1-11.4) is preferable.
  • the compounds represented by the formula (N-1-11.2) and the formula (N-1-11.4) can be used alone or in combination.
  • the lower limit of the preferable content of these compounds alone or with respect to the total amount is 5%, 10%, 13%, 15%, 17%, and 20%.
  • the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
  • the compound represented by the general formula (N-1-12) is the following compound.
  • R N1121 and R N1122 each independently represent the same meaning as R N11 and R N12 in formula (N-1)).
  • RN1121 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
  • RN1122 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.
  • the compound represented by the general formula (N-1-12) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the content is set large in the case of emphasizing improved [Delta] [epsilon], when importance is attached to low-temperature storage stability highly effective when fewer to set the content, when importance is attached to T NI is the content The effect is high when setting a large number. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.
  • the lower limit of the preferable content of the compound represented by the formula (N-1-12) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
  • the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
  • the compound represented by the general formula (N-1-13) is the following compound.
  • R N1131 and R N1132 each independently represent the same meaning as R N11 and R N12 in formula (N-1)).
  • R N1131 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
  • R N1132 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.
  • the compound represented by the general formula (N-1-13) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the lower limit of the preferable content of the compound represented by the formula (N-1-13) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
  • the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
  • the compound represented by the general formula (N-1-14) is the following compound.
  • R N1141 and R N1142 each independently represent the same meaning as R N11 and R N12 in formula (N-1)).
  • R N1141 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
  • R N1142 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.
  • the compound represented by the general formula (N-1-14) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the lower limit of the preferable content of the compound represented by the formula (N-1-14) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
  • the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
  • the compound represented by the general formula (N-1-15) is the following compound.
  • R N1151 and R N1152 each independently represent the same meaning as R N11 and R N12 in formula (N-1)).
  • RN1151 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
  • R N1152 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.
  • the compound represented by the general formula (N-1-15) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the content is set large in the case of emphasizing improved [Delta] [epsilon], when importance is attached to low-temperature storage stability highly effective when fewer to set the content, when importance is attached to T NI is the content The effect is high when setting a large number. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.
  • the lower limit of the preferable content of the compound represented by the formula (N-1-15) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
  • the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
  • the compound represented by the general formula (N-1-16) is the following compound.
  • R N1161 and R N1162 each independently represent the same meaning as R N11 and R N12 in formula (N-1).
  • R N1161 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
  • R N1162 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.
  • the compound represented by the general formula (N-1-16) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the content is set large in the case of emphasizing improved [Delta] [epsilon], when importance is attached to low-temperature storage stability highly effective when fewer to set the content, when importance is attached to T NI is the content The effect is high when setting a large number. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.
  • the lower limit of the preferable content of the compound represented by the formula (N-1-16) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
  • the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
  • the compound represented by the general formula (N-1-17) is the following compound.
  • R N1171 and R N1172 each independently represent the same meaning as R N11 and R N12 in formula (N-1)).
  • RN1171 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
  • R N1172 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.
  • the compound represented by the general formula (N-1-17) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the content is set large in the case of emphasizing improved [Delta] [epsilon], when importance is attached to low-temperature storage stability highly effective when fewer to set the content, when importance is attached to T NI is the content The effect is high when setting a large number. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.
  • the lower limit of the preferable content of the compound represented by the formula (N-1-17) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
  • the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
  • the compound represented by the general formula (N-1-18) is the following compound.
  • R N1181 and R N1182 each independently represent the same meaning as R N11 and R N12 in formula (N-1)).
  • RN1181 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, preferably a methyl group, an ethyl group, a propyl group or a butyl group.
  • R N1182 is preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and preferably an ethoxy group, a propoxy group, or a butoxy group.
  • the compound represented by the general formula (N-1-18) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the content is set large in the case of emphasizing improved [Delta] [epsilon], when importance is attached to low-temperature storage stability highly effective when fewer to set the content, when importance is attached to T NI is the content The effect is high when setting a large number. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.
  • the lower limit of the preferable content of the compound represented by the formula (N-1-18) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
  • the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
  • the compound represented by the general formula (N-1-18) is a compound selected from the group of compounds represented by the formula (N-18.1) to the formula (N-1-18.5).
  • it is a compound represented by the formulas (N-18.1.1) to (N-1-18.3), and the formulas (N-18.2.) And (N
  • the compound represented by ⁇ 1-18.3) is preferable.
  • the compound represented by the general formula (N-1-20) is the following compound.
  • R N1201 and R N1202 each independently represent the same meaning as R N11 and R N12 in formula (N-1).
  • R N1201 and R N1202 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
  • the compound represented by the general formula (N-1-20) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the content is set large in the case of emphasizing improved [Delta] [epsilon], when importance is attached to low-temperature storage stability highly effective when fewer to set the content, when importance is attached to T NI is the content Setting it to a small value is highly effective. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.
  • the lower limit of the preferable content of the compound represented by the formula (N-1-20) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
  • the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
  • the compound represented by the general formula (N-1-21) is the following compound.
  • R N1211 and R N1212 each independently represent the same meaning as R N11 and R N12 in formula (N-1).
  • R N1211 and R N1212 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group or a butyl group.
  • the compound represented by the general formula (N-1-21) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the content is set large in the case of emphasizing improved [Delta] [epsilon], when importance is attached to low-temperature storage stability highly effective when fewer to set the content, when importance is attached to T NI is the content The effect is high when setting a large number. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.
  • the lower limit of the preferable content of the compound represented by the formula (N-1-21) with respect to the total amount of the composition of the present invention is 5%, 10%, 13%, 15% 17% and 20%.
  • the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, and 13%.
  • the compound represented by the general formula (N-1-22) is the following compound.
  • R N1221 and R N1222 each independently represent the same meaning as R N11 and R N12 in formula (N-1)).
  • R N1221 and R N1222 are each independently preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably an ethyl group, a propyl group, or a butyl group.
  • the compound represented by the general formula (N-1-22) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the content is set large in the case of emphasizing improved [Delta] [epsilon], when importance is attached to low-temperature storage stability highly effective when fewer to set the content, when importance is attached to T NI is the content The effect is high when setting a large number. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.
  • the lower limit of the preferable content of the compound represented by the formula (N-1-22) with respect to the total amount of the composition of the present invention is 1%, 5%, 10%, 13% 15%, 17% and 20%.
  • the upper limit of the preferable content is 35%, 30%, 28%, 25%, 23%, 20%, and 18% with respect to the total amount of the composition of the present invention. %, 15%, 13%, 10%, 5%.
  • the compound represented by the general formula (N-1-22) is a compound selected from the group of compounds represented by the formula (N-1-22.1) to the formula (N-1-22.12).
  • it is a compound represented by formulas (N-1-22.1) to (N-1-22.5), and preferably represented by formulas (N-1-22.1) to (N- The compound represented by 1-22.4) is preferred.
  • the compound represented by the general formula (N-3) is preferably a compound selected from the group of compounds represented by the general formula (N-3-2).
  • R N321 and R N322 each independently represent the same meaning as R N11 and R N12 in formula (N-1).
  • R N321 and R N322 are preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms, and preferably a propyl group or a pentyl group.
  • the compound represented by the general formula (N-3-2) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the content is set large in the case of emphasizing improved [Delta] [epsilon], when importance is attached to low-temperature storage stability highly effective when fewer to set the content, when importance is attached to T NI is the content The effect is high when setting a large number. Furthermore, when improving dripping marks and image sticking characteristics, it is preferable to set the content range in the middle.
  • the lower limit of the preferable content of the compound represented by the formula (N-3-2) with respect to the total amount of the composition of the present invention is 3%, 5%, 10%, 13% , 15%, 17%, 20%, 23%, 25%, 27%, 30%, 33%, and 35%.
  • the upper limit of the preferable content is 50%, 40%, 38%, 35%, 33%, 30%, and 28% with respect to the total amount of the composition of the present invention. %, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8%, 7%, 6% % And 5%.
  • the compound represented by the general formula (N-3-2) is a compound selected from the group of compounds represented by the formula (N-3-2.1) to the formula (N-3-2.3). Preferably there is.
  • the liquid crystal composition of the present invention preferably contains one or more compounds represented by the general formula (L).
  • the compound represented by the general formula (L) corresponds to a dielectrically neutral compound ( ⁇ value is ⁇ 2 to 2).
  • R L1 and R L2 each independently represents an alkyl group having 1 to 8 carbon atoms, and one or two or more non-adjacent —CH 2 — in the alkyl group are each independently Optionally substituted by —CH ⁇ CH—, —C ⁇ C—, —O—, —CO—, —COO— or —OCO—, n L1 represents 0, 1, 2 or 3,
  • a L1 , A L2 and A L3 each independently represent (a) a 1,4-cyclohexylene group (one —CH 2 — present in the group or two or more —CH 2 — not adjacent to each other).
  • a hydrogen atom in the group (a), the group (b) and the group (c) may be independently substituted with a cyano group, a fluorine atom or a chlorine atom.
  • n L1 is 2 or 3 and a plurality of A L2 are present, they may be the same or different, and when n L1 is 2 or 3, and a plurality of Z L2 are present, May be the same or different, but excludes compounds represented by general formulas (i), (ii), (N-1), (N-2) and (N-3). )
  • the compounds represented by the general formula (L) may be used alone or in combination. Although there is no restriction
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention. Alternatively, in another embodiment of the present invention, there are two types, three types, four types, five types, six types, seven types, eight types, nine types, 10 types, More than types.
  • the content of the compound represented by the general formula (L) is low-temperature storage stability, transition temperature, electrical reliability, birefringence, process compatibility, dripping marks, image sticking, dielectric It is necessary to appropriately adjust according to required performance such as rate anisotropy.
  • the lower limit of the preferable content of the compound represented by the formula (L) with respect to the total amount of the composition of the present invention is 1%, 10%, 20%, 30%, 40 %, 50%, 55%, 60%, 65%, 70%, 75%, 80%.
  • the upper limit of the preferable content is 95%, 85%, 75%, 65%, 55%, 45%, 35%, and 25%.
  • the lower limit value is high and the upper limit value is preferably high. Moreover, maintaining high T NI of the compositions of the present invention, it is preferable if the temperature stability with good composition is required upper limit higher the lower limit of the above is high. Further, when it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable that the above lower limit value is lowered and the upper limit value is low.
  • R L1 and R L2 are preferably both alkyl groups, and when importance is placed on reducing the volatility of the compound, it is preferably an alkoxy group, and importance is placed on viscosity reduction. In this case, at least one is preferably an alkenyl group.
  • R L1 and R L2 are each a linear alkyl group having 1 to 5 carbon atoms or a linear alkyl group having 1 to 4 carbon atoms when the ring structure to which R L1 is bonded is a phenyl group (aromatic).
  • a saturated ring structure such as cyclohexane, pyran and dioxane
  • a straight-chain C 1-5 carbon atom is preferred.
  • Alkyl groups linear alkoxy groups having 1 to 4 carbon atoms and linear alkenyl groups having 2 to 5 carbon atoms are preferred.
  • the total of carbon atoms and oxygen atoms, if present, is preferably 5 or less, and is preferably linear.
  • the alkenyl group is preferably selected from groups represented by any of the formulas (R1) to (R5). (The black dots in each formula represent carbon atoms in the ring structure.)
  • n L1 is preferably 0 when importance is attached to the response speed, 2 or 3 is preferred for improving the upper limit temperature of the nematic phase, and 1 is preferred for balancing these. In order to satisfy the properties required for the composition, it is preferable to combine compounds having different values.
  • a L1 , A L2, and A L3 are preferably aromatic when it is required to increase ⁇ n, and are preferably aliphatic for improving the response speed, and are each independently trans- 1,4-cyclohexylene group, 1,4-phenylene group, 2-fluoro-1,4-phenylene group, 3-fluoro-1,4-phenylene group, 3,5-difluoro-1,4-phenylene group 1,4-cyclohexenylene group, 1,4-bicyclo [2.2.2] octylene group, piperidine-1,4-diyl group, naphthalene-2,6-diyl group, decahydronaphthalene-2,6 -It preferably represents a diyl group or a 1,2,3,4-tetrahydronaphthalene-2,6-diyl group, and more preferably represents the following structure:
  • it represents a trans-1,4-cyclohexylene group or a 1,4-phenylene group.
  • Z L1 and Z L2 are preferably single bonds when the response speed is important.
  • the compound represented by the general formula (L) preferably has 0 or 1 halogen atom in the molecule.
  • the compound represented by the general formula (L) is preferably a compound selected from the group of compounds represented by the general formulas (L-1), (L-3) to (L-7).
  • the compound represented by the general formula (L-1) is the following compound.
  • R L11 and R L12 each independently represent the same meaning as R L1 and R L2 in General Formula (L), except for the compound represented by General Formula (i)).
  • R L11 and R L12 are preferably a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a linear alkenyl group having 2 to 5 carbon atoms. .
  • the compound represented by the general formula (L-1) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the lower limit of the preferable content is 1%, 2%, 3%, 5%, 7%, 10%, and 15% with respect to the total amount of the composition of the present invention. %, 20%, 25%, 30%, 35%, 40%, 45%, 50%, and 55%.
  • the upper limit of the preferable content is 95%, 90%, 85%, 80%, 75%, 70%, 65%, based on the total amount of the composition of the present invention. %, 60%, 55%, 50%, 45%, 40%, 35%, 30%, 25%.
  • the lower limit value is high and the upper limit value is preferably high. Moreover, maintaining high T NI of the compositions of the present invention, it is preferred if good composition temperature stability is required is the upper limit value in the lower limit of the above is moderate is moderate. When it is desired to increase the dielectric anisotropy in order to keep the driving voltage low, it is preferable that the lower limit value is low and the upper limit value is low.
  • the compound represented by the general formula (L-1) is preferably a compound selected from the group of compounds represented by the general formula (L-1-1).
  • R L12 represents the same meaning as in general formula (L-1), but excludes the compound represented by general formula (i).
  • the compound represented by the general formula (L-1-1) is a compound selected from the group of compounds represented by the formula (L-1-1.1) to the formula (L-1-1.3). And is preferably a compound represented by formula (L-1-1.2) or formula (L-1-1.3), and particularly represented by formula (L-1-1.3). It is preferable that it is a compound.
  • the lower limit of the preferable content of the compound represented by the formula (L-1-1.3) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, 7%, and 10%.
  • the upper limit of the preferable content is 20%, 15%, 13%, 10%, 8%, 7%, and 6% with respect to the total amount of the composition of the present invention. %, 5%, 3%.
  • the compound represented by the general formula (L-1) is preferably a compound selected from the group of compounds represented by the general formula (L-1-2).
  • R L12 represents the same meaning as in general formula (L-1), but excludes the compound represented by general formula (i).
  • the lower limit of the preferable content of the compound represented by the formula (L-1-2) with respect to the total amount of the composition of the present invention is 1%, 5%, 10%, 15% 17%, 20%, 23%, 25%, 27%, 30%, 35%.
  • the upper limit of the preferable content is 60%, 55%, 50%, 45%, 42%, 40%, and 38% with respect to the total amount of the composition of the present invention. %, 35%, 33%, and 30%.
  • the compound represented by the general formula (L-1-2) is a compound selected from the group of compounds represented by the formula (L-1-2.1) to the formula (L-1-2.4).
  • it is a compound represented by the formula (L-1-2.2) to the formula (L-1-2.4).
  • the compound represented by the formula (L-1-2.2) is preferable because the response speed of the composition of the present invention is particularly improved.
  • it is preferable to use a compound represented by formula (L-1-2.3) or the formula (L-1-2.4).
  • the content of the compounds represented by the formulas (L-1-2.3) and (L-1-2.4) is not preferably 30% or more in order to improve the low-temperature storage stability.
  • the lower limit of the preferable content of the compound represented by the formula (L-1-2.2) with respect to the total amount of the composition of the present invention is 10%, 15%, 18%, 20%, 23%, 25%, 27%, 30%, 33%, 35%, 38%, and 40%.
  • the upper limit of the preferable content is 60%, 55%, 50%, 45%, 43%, 40%, and 38% with respect to the total amount of the composition of the present invention. %, 35%, 32%, 30%, 27%, 25%, and 22%.
  • the lower limit of the preferable total content of the compound represented by the formula (L-1-2.3) and the compound represented by the formula (L-1-2.2) with respect to the total amount of the composition of the present invention The values are 10%, 15%, 20%, 25%, 27%, 30%, 35% and 40%.
  • the upper limit of the preferable content is 60%, 55%, 50%, 45%, 43%, 40%, and 38% with respect to the total amount of the composition of the present invention. %, 35%, 32%, 30%, 27%, 25%, and 22%.
  • the compound represented by the general formula (L-1) is preferably a compound selected from the group of compounds represented by the general formula (L-1-3).
  • R L13 and R L14 each independently represent the same meaning as R L1 and R L2 in General Formula (L), except for the compound represented by General Formula (i)).
  • R L13 and R L14 are preferably a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a linear alkenyl group having 2 to 5 carbon atoms. .
  • the lower limit of the preferable content of the compound represented by the formula (L-1-3) with respect to the total amount of the composition of the present invention is 1%, 5%, 10%, 13% 15%, 17%, 20%, 23%, 25%, 30%.
  • the upper limit of the preferable content is 60%, 55%, 50%, 45%, 40%, 37%, and 35% with respect to the total amount of the composition of the present invention. %, 33%, 30%, 27%, 25%, 23%, 23%, 20%, 17%, 15%, 13%, 10% %.
  • the compound represented by the general formula (L-1-3) is a compound selected from the group of compounds represented by the formula (L-1-3.1) to the formula (L-1-3.13).
  • it is a compound represented by formula (L-1-3.1), formula (L-1-3.3) or formula (L-1-3.4).
  • the compound represented by the formula (L-1-3.1) is preferable because the response speed of the composition of the present invention is particularly improved.
  • the equations (L-1-3.3), (L-1-3.4), (L-1-3.11), and (L It is preferable to use a compound represented by (1-3.12).
  • Sum of compounds represented by formula (L-1-3.3), formula (L-1-3.4), formula (L-1-3.11) and formula (L-1-3.12) The content of is not preferably 20% or more in order to improve the low-temperature storage stability.
  • the lower limit of the preferable content of the compound represented by the formula (L-1-3.1) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, 7%, 10%, 13%, 15%, 18%, 20%.
  • the upper limit of the preferable content is 20%, 17%, 15%, 13%, 10%, 8%, and 7% with respect to the total amount of the composition of the present invention. % And 6%.
  • the compound represented by the general formula (L-1) is preferably a compound selected from the group of compounds represented by the general formula (L-1-4) and / or (L-1-5).
  • R L15 and R L16 each independently represent the same meaning as R L1 and R L2 in General Formula (L), except for the compound represented by General Formula (i)).
  • R L15 and R L16 are preferably a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 4 carbon atoms, and a linear alkenyl group having 2 to 5 carbon atoms. .
  • the lower limit of the preferable content of the compound represented by the formula (L-1-4) with respect to the total amount of the composition of the present invention is 1%, 5%, 10%, 13% 15%, 17%, 20%.
  • the upper limit of the preferable content is 25%, 23%, 20%, 17%, 15%, 13%, and 10% with respect to the total amount of the composition of the present invention. %.
  • the lower limit of the preferable content of the compound represented by the formula (L-1-5) with respect to the total amount of the composition of the present invention is 1%, 5%, 10%, 13% 15%, 17%, 20%.
  • the upper limit of the preferable content is 25%, 23%, 20%, 17%, 15%, 13%, and 10% with respect to the total amount of the composition of the present invention. %.
  • the compounds represented by the general formulas (L-1-4) and (L-1-5) are represented by the formulas (L-1-4.1) to (L-1-5.3).
  • a compound represented by the formula (L-1-4.2) or the formula (L-1-5.2) is preferable.
  • the lower limit of the preferable content of the compound represented by the formula (L-1-4.2) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, 7%, 10%, 13%, 15%, 18%, 20%.
  • the upper limit of the preferable content is 20%, 17%, 15%, 13%, 10%, 8%, and 7% with respect to the total amount of the composition of the present invention. % And 6%.
  • the lower limit of the preferred content of the total content of these compounds is 1%, 2%, 3%, 5%, 7%, 10%, 13%, and 15% with respect to the total amount of the composition of the present invention Yes, 18%, 20% Yes, 23%, 25%, 27%, 30%, 33%, 35%, and the upper limit is 80% with respect to the total amount of the composition of the present invention.
  • the compound represented by the general formula (L-3) is the following compound.
  • R L31 and R L32 each independently represent the same meaning as R L1 and R L2 in General Formula (L).
  • R L31 and R L32 are each independently preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms.
  • the compound represented by the general formula (L-3) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the lower limit of the preferable content of the compound represented by the formula (L-3) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5% 7% and 10%.
  • the upper limit of the preferable content is 20%, 15%, 13%, 10%, 8%, 7%, and 6% with respect to the total amount of the composition of the present invention. %, 5%, 3%.
  • the effect is high when the content is set to be large.
  • the high TNI is emphasized, the effect is high when the content is set low.
  • the compound represented by the general formula (L-3) is preferably a compound selected from the group of compounds represented by formulas (L-3.1) to (L-3.7).
  • a compound represented by the formula (L-3.1) to (L-3.6) is preferable.
  • the compound represented by the general formula (L-4) is the following compound.
  • R L41 and R L42 each independently represent the same meaning as R L1 and R L2 in General Formula (L).
  • R L41 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms
  • R L42 is an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or a carbon atom.
  • An alkoxy group of 1 to 4 is preferable.
  • the compound represented by the general formula (L-4) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the content of the compound represented by the general formula (L-4) is low-temperature storage stability, transition temperature, electrical reliability, birefringence, process compatibility, dripping marks, image sticking. Therefore, it is necessary to appropriately adjust according to required performance such as dielectric anisotropy.
  • the lower limit of the preferable content of the compound represented by the formula (L-4) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5% 7%, 10%, 14%, 16%, 20%, 23%, 26%, 30%, 35%, 40% .
  • the upper limit of the preferable content of the compound represented by the formula (L-4) with respect to the total amount of the composition of the present invention is 50%, 40%, 35%, and 30%. 20%, 15%, 10%, 5%.
  • the compound represented by general formula (L-4) is preferably a compound represented by formula (L-4.1) to formula (L-4.10), for example.
  • the lower limit of the preferable content of the compound represented by formula (L-4.1) or formula (L-4.2) with respect to the total amount of the composition of the present invention is 3%, Yes, 7%, 9%, 11%, 12%, 13%, 18%, 21%, and the preferred upper limit is 45, 40% , 35%, 30%, 25%, 23%, 20%, 18%, 15%, 13%, 10%, 8% .
  • the amount of both compounds relative to the total amount of the composition of the present invention is The lower limit of the preferred content is 15%, 19%, 24%, and 30%, and the preferred upper limit is 45, 40%, 35%, and 30%. Yes, 25%, 23%, 20%, 18%, 15%, 13%.
  • the compound represented by the general formula (L-4) is preferably, for example, a compound group represented by the formula (L-4.4) to the formula (L-4.6).
  • a compound represented by formula (L-4.4) is preferable.
  • the lower limit of the preferable content of the compound represented by the formula (L-4.4) or the formula (L-4.5) with respect to the total amount of the composition of the present invention is 3%, Yes, 7%, 9%, 11%, 12%, 13%, 18%, 21%.
  • Preferred upper limit values are 45, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15%, 13% %, 10%, and 8%.
  • the amount of both compounds relative to the total amount of the composition of the present invention is The lower limit of the preferable content is 1%, 3%, 5%, 7%, 9%, 11%, 15%, and the preferable upper limit is 45. Yes, 40%, 35%, 30%, 25%, 23%, 20%, 18%, 15%, 13%.
  • the compound represented by the general formula (L-4) is preferably a compound represented by the formula (L-4.7) to the formula (L-4.10), and particularly the formula (L-4.
  • the compound represented by 8) is preferred.
  • the compound represented by the general formula (L-5) is the following compound.
  • R L51 and R L52 each independently represent the same meaning as R L1 and R L2 in the general formula (L).
  • R L51 is preferably an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms
  • R L52 is an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 4 to 5 carbon atoms, or a carbon atom.
  • An alkoxy group of 1 to 4 is preferable.
  • the compound represented by the general formula (L-5) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the content of the compound represented by the general formula (L-5) is low-temperature storage stability, transition temperature, electrical reliability, birefringence, process compatibility, dripping marks, image sticking. Therefore, it is necessary to appropriately adjust according to required performance such as dielectric anisotropy.
  • the lower limit of the preferable content of the compound represented by the formula (L-5) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5% 7%, 10%, 14%, 16%, 20%, 23%, 26%, 30%, 35%, 40% .
  • the upper limit of the preferable content of the compound represented by the formula (L-5) with respect to the total amount of the composition of the present invention is 50%, 40%, 35%, and 30%. 20%, 15%, 10%, 5%.
  • the compound represented by the general formula (L-5) is preferably, for example, a compound represented by the formula (L-5.1) to the formula (L-5.7).
  • the compound represented by the general formula (L-5) is preferably a compound selected from the group of compounds represented by the formula (L-5.1) or the formula (L-5.2), for example.
  • a compound represented by formula (L-5.1) is preferable.
  • the lower limit of the preferable content of the compound group represented by the formula (L-5.1) or the formula (L-5.2) with respect to the total amount of the composition of the present invention is 1%, 2% 3%, 5% and 7%.
  • the upper limit of the preferable content of these compound groups is 20%, 15%, 13%, 10%, and 9%.
  • the compound represented by General Formula (L-5) is preferably a compound selected from the group of compounds represented by Formula (L-5.3) or Formula (L-5.4), for example.
  • the lower limit of the preferable content of the compound group represented by the formula (L-5.3) or the formula (L-5.4) with respect to the total amount of the composition of the present invention is 1%, 2% 3%, 5% and 7%.
  • the upper limit of the preferable content of these compounds is 20%, 15%, 13%, 10%, and 9%.
  • the compound represented by the general formula (L-5) is preferably a compound selected from the group of compounds represented by the formula (L-5.5) to the formula (L-5.7).
  • a compound represented by the formula (L-5.7) is preferable.
  • the lower limit of the preferable content of the compound group represented by formula (L-5.5) to formula (L-5.7) with respect to the total amount of the composition of the present invention is 1%, 2% 3%, 5% and 7%.
  • the upper limit of the preferable content of these compounds is 20%, 15%, 13%, 10%, and 9%.
  • the compound represented by the general formula (L-6) is the following compound.
  • R L61 and R L62 each independently represent the same meaning as R L1 and R L2 in the general formula (L), and X L61 and X L62 each independently represent a hydrogen atom or a fluorine atom.
  • R L61 and R L62 are each independently preferably one of X L61 and X L62 is a fluorine atom and the other is a hydrogen atom.
  • the compound represented by the general formula (L-6) can be used alone, or two or more compounds can be used in combination. There are no particular restrictions on the types of compounds that can be combined, but they are used in appropriate combinations according to the required performance such as low-temperature storage stability, transition temperature, electrical reliability, and birefringence.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, four kinds, and five kinds or more.
  • the lower limit of the preferable content of the compound represented by the formula (L-6) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5% 7%, 10%, 14%, 16%, 20%, 23%, 26%, 30%, 35%, 40% .
  • the upper limit of the preferable content of the compound represented by the formula (L-6) with respect to the total amount of the composition of the present invention is 50%, 40%, 35%, and 30%. 20%, 15%, 10%, 5%.
  • the compound represented by the general formula (L-6) is preferably a compound represented by the formula (L-6.1) to the formula (L-6.9).
  • the compound represented by the general formula (L-6) is preferably, for example, a compound represented by the formula (L-6.10) to the formula (L-6.17).
  • a compound represented by L-6.11) is preferable.
  • the lower limit of the preferable content of these compounds with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5%, and 7%.
  • the upper limit of the preferable content of these compounds is 20%, 15%, 13%, 10%, and 9%.
  • the compound represented by the general formula (L-7) is the following compound.
  • R L71 and R L72 each independently represent the same meaning as R L1 and R L2 in Formula (L)
  • a L71 and A L72 is A L2 and in the general formula (L) independently
  • a L3 represents the same meaning, but the hydrogen atoms on A L71 and A L72 may be each independently substituted with a fluorine atom
  • Z L71 represents the same meaning as Z L2 in formula (L)
  • X L71 and X L72 each independently represent a fluorine atom or a hydrogen atom.
  • R L71 and R L72 are each independently preferably an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms
  • a L71 and A L72 Are each independently preferably a 1,4-cyclohexylene group or a 1,4-phenylene group
  • the hydrogen atoms on A L71 and A L72 may be each independently substituted with a fluorine atom
  • Z L71 is a single group.
  • a bond or COO- is preferable, a single bond is preferable
  • X L71 and X L72 are preferably a hydrogen atom.
  • the kind of the compound used is, for example, one kind as one embodiment of the present invention, two kinds, three kinds, and four kinds.
  • the content of the compound represented by the general formula (L-7) is low-temperature storage stability, transition temperature, electrical reliability, birefringence, process suitability, dripping marks, image sticking. Therefore, it is necessary to appropriately adjust according to required performance such as dielectric anisotropy.
  • the lower limit of the preferable content of the compound represented by the formula (L-7) with respect to the total amount of the composition of the present invention is 1%, 2%, 3%, 5% 7%, 10%, 14%, 16%, 20%.
  • the upper limit of the preferable content of the compound represented by the formula (L-7) with respect to the total amount of the composition of the present invention is 30%, 25%, 23%, and 20%. 18%, 15%, 10%, 5%.
  • the compound represented by the general formula (L-7) is preferably a compound represented by the formula (L-7.1) to the formula (L-7.4), and the formula (L-7. It is preferable that it is a compound represented by 2).
  • the compound represented by the general formula (L-7) is preferably a compound represented by the formula (L-7.11) to the formula (L-7.13). It is preferable that it is a compound represented by 11).
  • the compound represented by the general formula (L-7) is a compound represented by the formula (L-7.21) to the formula (L-7.23).
  • a compound represented by formula (L-7.21) is preferable.
  • the compound represented by the general formula (L-7) is preferably a compound represented by the formula (L-7.31) to the formula (L-7.34), and the formula (L-7. 31) or / and a compound represented by the formula (L-7.32).
  • the compound represented by the general formula (L-7) is preferably a compound represented by the formula (L-7.41) to the formula (L-7.44), and the formula (L-7. 41) or / and a compound represented by formula (L-7.42).
  • the compound represented by the general formula (L-7) is preferably a compound represented by the formula (L-7.51) to the formula (L-7.53).
  • Preferable total content of compounds represented by general formula (i), general formula (ii), general formula (L) and (N-1) to (N-3) with respect to the total amount of the composition of the present invention The lower limit of the amount is 80%, 85%, 88%, 90%, 92%, 93%, 94%, 95%, 96% 97%, 98%, 99%, 100%.
  • the upper limit of the preferable content is 100%, 99%, 98%, and 95%.
  • the lower limit of the preferable total content of the compounds represented by general formula (i), general formula (ii), and general formula (N-1-2) with respect to the total amount of the composition of the present invention is 20% , 23%, 25%, 27%, 30%, 40%, 50%, 55%, 60%, and 65%.
  • the upper limit of the preferable content is 65%, 60%, 50%, 40%, 30%, and 20%.
  • the lower limit of the preferable total content of the compounds represented by the general formula (i), the general formula (ii) and the general formula (N-1-3) with respect to the total amount of the composition of the present invention is 17% , 20%, 22%, 25%, 30%, 35%, 40%, 50%, 60%, 65%.
  • the upper limit of the preferable content is 35%, 30%, 27%, 25%, 20%, and 15%.
  • the lower limit value of the total content of the compounds represented by the general formula (i), the general formula (ii) and the general formula (N-1-5) with respect to the total amount of the composition of the present invention is 13% 15%, 20%, 25%, 30%, 35%, 40%, 45%, 47%, 50.
  • the upper limit of the preferable content is 50%, 47%, 45%, 35%, 25%, and 15%.
  • composition of the present invention preferably does not contain a compound having a structure in which oxygen atoms such as a peracid (—CO—OO—) structure are bonded in the molecule.
  • the content of the compound having a carbonyl group is preferably 5% or less, more preferably 3% or less with respect to the total mass of the composition. Preferably, it is more preferably 1% or less, and most preferably not substantially contained.
  • the content of the compound substituted with chlorine atoms is preferably 15% or less, preferably 10% or less, based on the total mass of the composition. % Or less, preferably 5% or less, more preferably 3% or less, and still more preferably substantially not contained.
  • the content of a compound in which all the ring structures in the molecule are 6-membered rings is 80 % Or more, more preferably 90% or more, still more preferably 95% or more, and the composition is composed only of a compound in which all of the ring structures in the molecule are all 6-membered rings. Most preferably.
  • the content of the compound having a cyclohexenylene group as a ring structure, and the content of the compound having a cyclohexenylene group as the total mass of the composition is preferably 10% or less, preferably 8% or less, more preferably 5% or less, preferably 3% or less, and still more preferably not contained.
  • a hydrogen atom to reduce the content of the compound having the optionally substituted 2-methyl-1,4-diyl group halogen in the molecule is preferably 10% or less, more preferably 8% or less with respect to the total mass of the composition. It is preferably 5% or less, more preferably 3% or less, and still more preferably substantially not contained.
  • substantially not contained in the present application means that it is not contained except for an unintentionally contained product.
  • the average elastic constant (K AVG ) of the liquid crystal composition used in the present invention is preferably 10 to 25, and the lower limit thereof is preferably 10, preferably 10.5, preferably 11 and preferably 11.5.
  • 12 is preferable, 12.3 is preferable, 12.5 is preferable, 12.8 is preferable, 13 is preferable, 13.3 is preferable, 13.5 is preferable, 13.8 is preferable, 14 is preferable, 14 .3 is preferred, 14.5 is preferred, 14.8 is preferred, 15 is preferred, 15.3 is preferred, 15.5 is preferred, 15.8 is preferred, 16 is preferred, 16.3 is preferred, 16 .5, 16.8 is preferable, 17 is preferable, 17.3 is preferable, 17.5 is preferable, 17.8 is preferable, and 18 is preferable.
  • 25 is preferable, 24.5 is preferable, 24 is preferable, 23.5 is preferable, 23 is preferable, 22.8 is preferable, 22.5 is preferable, 22.3 is preferable, 22 is preferable, and 21.8 is 21.5 is preferred, 21.3 is preferred, 21 is preferred, 20.8 is preferred, 20.5 is preferred, 20.3 is preferred, 20 is preferred, 19.8 is preferred, 19.5 is preferred 19.3 is preferred, 19 is preferred, 18.8 is preferred, 18.5 is preferred, 18.3 is preferred, 18 is preferred, 17.8 is preferred, 17.5 is preferred, 17.3 is preferred 17 is preferable.
  • the value of K AVG should be set low. preferable. It is preferable to set a higher value of K AVG in the case of emphasizing improved response speed.
  • a polymerizable compound in order to produce a liquid crystal display device such as PS mode, PSA mode, PSVA mode, lateral electric field type PSA mode or lateral electric field type PSVA mode, a polymerizable compound (general formula (i), ( ii), (N-1), (N-2) and (N-3) are excluded).
  • the polymerizable compound that can be used include a photopolymerizable monomer that undergoes polymerization by energy rays such as light.
  • the structure has, for example, a liquid crystal skeleton in which a plurality of six-membered rings such as biphenyl derivatives and terphenyl derivatives are connected. Examples thereof include a polymerizable compound. More specifically, the general formula (XX)
  • Z 201 represents —OCH 2 —, —CH 2 O—, —COO—, —OCO—, —CF 2 O—, —OCF 2 —, —CH 2 CH 2 —, —CF 2 CF 2 —, —CH ⁇ CH—COO—, —CH ⁇ CH—OCO—, —COO—CH ⁇ CH—, —OCO—CH ⁇ CH—, —COO—CH 2 CH 2 —, —OCO—CH 2 CH 2 —, —CH 2 CH 2 —COO—, —CH 2 CH 2 —, —OCO—CH 2 CH 2 —, —CH 2 CH 2 —COO—, —CH 2 CH 2 —OCO—, —COO—CH 2 CH 2 —, —OCO—CH 2 CH 2 —, —CH 2 CH 2 —COO—, —CH 2 CH 2 —OCO—, —COO—CH 2 CH 2 —, —OCO—CH 2 CH
  • X 201 and X 202 are each preferably a diacrylate derivative that represents a hydrogen atom, or a dimethacrylate derivative that has a methyl group, and a compound in which one represents a hydrogen atom and the other represents a methyl group.
  • diacrylate derivatives are the fastest, dimethacrylate derivatives are slow, asymmetric compounds are in the middle, and a preferred embodiment can be used depending on the application.
  • a dimethacrylate derivative is particularly preferable.
  • Sp 201 and Sp 202 each independently represent a single bond, an alkylene group having 1 to 8 carbon atoms, or —O— (CH 2 ) s —, but at least one of them is a single bond in a PSA display element.
  • a compound in which both represent a single bond or one in which one represents a single bond and the other represents an alkylene group having 1 to 8 carbon atoms or —O— (CH 2 ) s — is preferable.
  • 1 to 4 alkyl groups are preferable, and s is preferably 1 to 4.
  • Z 201 represents —OCH 2 —, —CH 2 O—, —COO—, —OCO—, —CF 2 O—, —OCF 2 —, —CH 2 CH 2 —, —CF 2 CF 2 — or a single bond
  • —COO—, —OCO— or a single bond is more preferred, and a single bond is particularly preferred.
  • M 201 represents a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a single bond in which any hydrogen atom may be substituted by a fluorine atom, but the 1,4-phenylene group or the single bond is preferable.
  • C represents a ring structure other than a single bond
  • Z 201 is preferably a linking group other than a single bond.
  • M 201 is a single bond
  • Z 201 is preferably a single bond.
  • the ring structure between Sp 201 and Sp 202 is specifically preferably the structure described below.
  • Polymerizable compounds containing these skeletons are optimal for PSA-type liquid crystal display elements because of their ability to regulate alignment after polymerization, and display alignment is suppressed, or display unevenness is suppressed or does not occur at all.
  • general formula (XX-1) to general formula (XX-4) are particularly preferable, and among them, general formula (XX-2) is most preferable.
  • benzene may be substituted with a fluorine atom
  • Sp 20 represents an alkylene group having 2 to 5 carbon atoms.
  • the polymerization proceeds even when no polymerization initiator is present, but may contain a polymerization initiator in order to accelerate the polymerization.
  • the polymerization initiator include benzoin ethers, benzophenones, acetophenones, benzyl ketals, acylphosphine oxides, and the like.
  • the content of the polymerizable compound is 0.05 to 2% by mass, 0.1 to 1.5% by mass with respect to 100% by mass of the liquid crystal composition. %, 0.2 to 1.0 mass%, and 0.25 to 0.5 mass% are preferably added.
  • composition in the present invention can further contain a compound represented by the general formula (Q).
  • RQ represents a straight-chain alkyl group or a branched-chain alkyl group having 1 to 22 carbon atoms, and one or more CH 2 groups in the alkyl group are —O—so that oxygen atoms are not directly adjacent to each other.
  • —, —CH ⁇ CH—, —CO—, —OCO—, —COO—, —C ⁇ C—, —CF 2 O—, —OCF 2 — may be substituted.
  • MQ represents a trans-1,4-cyclohexylene group, a 1,4-phenylene group or a single bond, and a trans-1,4-cyclohexylene group or a 1,4-phenylene group is preferred.
  • the compound represented by the general formula (Q) is preferably a compound represented by the following general formula (Qa) to general formula (Qd).
  • R Q1 is preferably a linear or branched alkyl group having 1 to 10 carbon atoms
  • R Q2 is preferably a linear or branched alkyl group having 1 to 20 carbon atoms
  • R Q3 is A straight-chain alkyl group having 1 to 8 carbon atoms, a branched-chain alkyl group, a straight-chain alkoxy group or a branched-chain alkoxy group is preferred
  • L Q is preferably a straight-chain alkylene group or branched-chain alkylene group having 1 to 8 carbon atoms.
  • compounds represented by general formula (Qa) to general formula (Qd) compounds represented by general formula (Qc) and general formula (Qd) are more preferable.
  • the compound represented by the general formula (Q) preferably contains one or two kinds, more preferably contains 1 to 5 kinds, and the content thereof is from 0.001. It is preferably 1%, more preferably 0.001 to 0.1%, and particularly preferably 0.001 to 0.05%.
  • antioxidants or light stabilizers are preferred as antioxidants or light stabilizers that can be used in the present invention.
  • n represents an integer of 0 to 20.
  • composition of the present invention preferably contains one or more compounds represented by general formula (Q) or compounds selected from general formulas (III-1) to (III-40). It is further preferable to contain 5 types, and the content is preferably 0.001 to 1%, more preferably 0.001 to 0.1%, and particularly preferably 0.001 to 0.05%.
  • the composition containing a polymerizable compound is provided with liquid crystal alignment ability by polymerization of the polymerizable compound contained therein by ultraviolet irradiation, and the amount of transmitted light can be increased by utilizing the birefringence of the composition. Used for controlling liquid crystal display elements.
  • FIG. 1 is a cross-sectional view schematically showing the main part of a cell of an embodiment of the liquid crystal display element of the present invention.
  • Examples of the liquid crystal display element of the present invention include a VA liquid crystal display element having the same cells as those shown in FIG.
  • the cell 2 ⁇ / b> C shown here includes a pair of substrates, a first substrate 23 and a second substrate 24.
  • a first electrode 231 and a first alignment film 232 are stacked in this order on the surface of the first substrate 23 facing (opposite) the second substrate 24 toward the second substrate 24.
  • a second electrode 241 and a second alignment film 242 are stacked in this order on the surface of the second substrate 24 facing (opposite) the first substrate 23 toward the first substrate 23.
  • a liquid crystal composition can be sandwiched between the first substrate 23 and the second substrate 24.
  • the first alignment film 232 and the second alignment film 242 control the alignment state of the sandwiched liquid crystal composition.
  • the symbol d 3 represents a cell gap in the cell 2C.
  • cells shown in FIG. 1 are only some examples of cells that can be used in the present invention, and the cells that can be used in the present invention are not limited to these. For example, those in which various changes are made to these cells can be used in the present invention without departing from the spirit of the present invention.
  • the liquid crystal display element of the present invention includes an IPS (in-plane switching) type or FFS (fringe field switching) type liquid crystal display element including the cell shown in FIG. 2 or FIG. .
  • the liquid crystal display element of this invention can be set as the structure similar to a well-known liquid crystal display element except the point which has the above-mentioned liquid crystal composition of this invention as a liquid crystal composition.
  • the cells shown in FIGS. 2 and 3 will be described in detail.
  • FIG. 2 is a cross-sectional view schematically showing a main part of one embodiment of a cell used in the liquid crystal display element of the present invention.
  • the cell 2 ⁇ / b> A shown here includes a pair of substrates, a first substrate 21 and a second substrate 22.
  • the first electrode 211A and the second electrode 212A are alternately arranged on the surface of the first substrate 21 facing (opposed to) the second substrate 22.
  • a case is shown in which the first electrode 211A corresponds to a positive electrode and the second electrode 212A corresponds to a negative electrode.
  • a liquid crystal composition can be sandwiched between the first substrate 21 and the second substrate 22.
  • the cell gap d 1 , the electrode width W 1 of the first electrode 211A and the second electrode 212A, and the inter-electrode distance L 1 between the first electrode 211A and the second electrode 212A are L 1 / d 1 > 1 and L 1 / W 1 > 1 is satisfied, the inter-electrode distance L 1 is larger than the cell gap d 1 and the electrode width W 1 , and the first electrode 211A and the second electrode 212A do not have a structure close to each other And it has the electrode structure used with an IPS type
  • FIG. 3 is a cross-sectional view schematically showing a main part of another embodiment of the cell used in the liquid crystal display element of the present invention. 3 that are the same as those shown in FIG. 2 are assigned the same reference numerals as in FIG. 2, and detailed descriptions thereof are omitted.
  • the cell 2 ⁇ / b> B shown here includes a pair of substrates, a first substrate 21 and a second substrate 22.
  • the second electrode 212 ⁇ / b> B and the insulating layer 213 are stacked in this order toward the second substrate 22, and the insulating layer 213 faces the second substrate 22.
  • a plurality of first electrodes 211B are arranged on the surface to be spaced with a predetermined interval.
  • the first electrode 211B corresponds to a positive electrode
  • the second electrode 212B corresponds to a negative electrode.
  • a liquid crystal composition can be sandwiched between the first substrate 21 and the second substrate 22.
  • the cell gap d 2 and the electrode width W 2 of the first electrode 211B can be set to be the same as d 1 and W 1 in the cell 2A, for example.
  • Cell 2B is a inter-electrode distance L 1 to 0 (zero) in it were cells 2A, has a structure formed by laminating a first electrode 211B and the second electrode 212B via the insulating layer 213, FFS type liquid crystal display It has an electrode configuration used in the device.
  • a direction perpendicular to the surfaces of the first substrate 21 and the second substrate 22 is also provided.
  • An electric field is also generated (in the vertical direction).
  • a strong electric field is generated in the vertical direction in a region near the side surface of the first electrode 211B.
  • the first electrode 211B and the second electrode 212B are respectively transparent electrodes so that the display function can be exhibited even in these electrode portions, and the liquid crystal display element including such a cell Can increase the aperture ratio.
  • the cells shown in FIGS. 1, 2, and 3 are only examples of cells that can be used in the liquid crystal display element of the present invention, and the cells that can be used in the liquid crystal display element are not limited thereto.
  • the cells shown in FIGS. 1, 2 and 3 with various modifications can be used.
  • FIG. 4 is a diagram schematically showing an embodiment of the liquid crystal display element of the present invention.
  • the liquid crystal display element 10 shown here includes a first transparent insulating substrate (hereinafter sometimes abbreviated as “first substrate”) 12 having an alignment film 14 formed on the surface thereof, and a distance from the first substrate.
  • a second transparent insulating substrate (hereinafter sometimes abbreviated as “second substrate”) 17 provided on the surface and having an alignment film 14 formed thereon is filled between the first substrate 12 and the second substrate 17.
  • a liquid crystal layer 15 in contact with the pair of alignment films, and an electrode layer 13 including a thin film transistor, a common electrode 122, and a pixel electrode 121 as an active element between the alignment film 14 and the first substrate 12. have.
  • the liquid crystal display element 10 includes a first substrate 12 and a second substrate 17 which are arranged to face each other, and a liquid crystal layer 15 containing the liquid crystal composition is sandwiched between them.
  • This is a liquid crystal display element of an electric field method (here, an FFS type which is a modification example of the IPS type).
  • the first substrate 12 has an electrode layer 13 formed on the surface on the liquid crystal layer 15 side.
  • These alignment films 14 and 14 are provided, and the alignment directions of these alignment films 14 are substantially parallel to the surface of the first substrate 12 or the second substrate 17.
  • the liquid crystal molecules in the liquid crystal composition are aligned so as to be substantially parallel to the surface of the first substrate 12 or the second substrate 17 when no voltage is applied.
  • the first substrate 12 and the second substrate 17 may be sandwiched between a pair of polarizing plates 11 and 18.
  • a color filter 16 is provided between the second substrate 17 and the alignment film 14.
  • the liquid crystal display element of the present invention may be a so-called color filter on array (COA), a color filter may be provided between an electrode layer including a thin film transistor and a liquid crystal layer, or the thin film transistor may be included.
  • COA color filter on array
  • a color filter may be provided between the electrode layer and the second substrate.
  • the liquid crystal display element 10 shown here includes a first polarizing plate 11, a first substrate 12, an electrode layer 13 including a thin film transistor, an alignment film 14, a liquid crystal layer 15 including the liquid crystal composition, and an alignment film 14.
  • the color filter 16, the second substrate 17, and the second polarizing plate 18 are sequentially stacked.
  • the first substrate 12 and the second substrate 17 can be made of a transparent insulating material having flexibility such as glass or plastic, and one is made of an opaque insulating material such as silicon. May be.
  • substrate 17 are bonded together by sealing materials and sealing materials, such as an epoxy-type thermosetting composition arrange
  • FIG. 5 is an enlarged plan view showing a region surrounded by the II line of the electrode layer 13 formed on the first substrate 12 in FIG. 6 is a cross-sectional view of the liquid crystal display element shown in FIG. 4 taken along the line III-III in FIG.
  • the electrode layer 13 including a thin film transistor formed on the surface of the first substrate 12 includes a plurality of gate lines 126 for supplying scanning signals and a plurality of source lines for supplying display signals. 125 are arranged in a matrix so as to cross each other. Note that FIG. 5 shows only a pair of gate wirings 126 and a pair of source wirings 125.
  • a unit pixel of the liquid crystal display device is formed by a region surrounded by the plurality of gate lines 126 and the plurality of source lines 125, and a pixel electrode 121 and a common electrode 122 are formed in the unit pixel.
  • a thin film transistor including a source electrode 127, a drain electrode 124, and a gate electrode 128 is provided in the vicinity of the intersection of the gate wiring 126 and the source wiring 125.
  • the thin film transistor is connected to the pixel electrode 121 as a switch element that supplies a display signal to the pixel electrode 121, and drives the pixel electrode 121.
  • a common line 129 is provided in parallel with the gate wiring 126.
  • the common line 129 is connected to the common electrode 122 in order to supply a common signal to the common electrode 122.
  • a preferred embodiment of the structure of the thin film transistor is, for example, as shown in FIG. 6, a gate electrode 111 formed on the surface of the first substrate 12, the gate electrode 111 covering the substantially entire surface of the first substrate 12.
  • a gate insulating layer 112 provided so as to cover, a semiconductor layer 113 formed on the surface of the gate insulating layer 112 so as to face the gate electrode 111, and a protection provided so as to cover part of the surface of the semiconductor layer 113
  • a drain electrode 116 provided to cover the layer 114, one side edge of the protective layer 114 and the semiconductor layer 113, and to be in contact with the gate insulating layer 112 formed on the surface of the first substrate 12; 114 and the other side edge of the semiconductor layer 113 and a source electrode 117 provided so as to be in contact with the gate insulating layer 112 formed on the surface of the first substrate 12; It has an insulating protective layer 118 provided so as to cover the in-electrode 116 and the source electrode 117, a.
  • Amorphous silicon, polycrystalline polysilicon, or the like can be used for the semiconductor layer 113.
  • a transparent semiconductor film such as ZnO, IGZO (In—Ga—Zn—O), or ITO is used, light caused by light absorption can be used. This is also preferable from the viewpoint of suppressing the harmful effects of carriers and increasing the aperture ratio of the element.
  • an ohmic contact layer 115 may be provided between the semiconductor layer 113 and the drain electrode 116 or the source electrode 117 for the purpose of reducing the width and height of the Schottky barrier.
  • a material in which an impurity such as phosphorus such as n-type amorphous silicon or n-type polycrystalline polysilicon is added at a high concentration can be used.
  • the gate wiring 126, the source wiring 125, and the common line 129 are preferably metal, more preferably Al, Cu, Au, Ag, Cr, Ta, Ti, Mo, W, Ni, or an alloy thereof. Or an alloy thereof is particularly preferable.
  • the insulating protective layer 118 is a layer having an insulating function, and is formed of silicon nitride, silicon dioxide, silicon oxynitride film, or the like.
  • the common electrode 122 is a flat electrode formed on the substantially entire surface of the gate insulating layer 112 (that is, the first substrate 12), while the pixel electrode 121 is the common electrode.
  • This is a comb-shaped electrode formed on the insulating protective layer 118 covering 122. That is, the common electrode 122 is disposed closer to the first substrate 12 than the pixel electrode 121, and these electrodes are disposed so as to overlap each other via the insulating protective layer 118.
  • the pixel electrode 121 and the common electrode 122 are formed of a transparent conductive material such as ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), IZTO (Indium Zinc Tin Oxide), and the like. Since the pixel electrode 121 and the common electrode 122 are formed of a transparent conductive material, the area opened by the unit pixel area is increased, and the aperture ratio and the transmittance are increased.
  • an inter-electrode distance (minimum separation distance) R between the pixel electrode 121 and the common electrode 122 is set to be equal to that of the first substrate 12 and the second electrode.
  • the distance between the substrates 17 is smaller than the inter-substrate distance G.
  • the interelectrode distance R represents the distance between the electrodes in a direction parallel to the surface of the substrate.
  • FIG. 6 shows an example in which the inter-electrode distance R is 0 because the flat common electrode 122 and the comb-shaped pixel electrode 121 overlap each other, and the inter-electrode distance (minimum separation distance) R is the first substrate.
  • the distance between the substrates 12 and the second substrate 17 is smaller than the inter-substrate distance (that is, the cell gap) G, a fringe electric field E is formed. Therefore, in the FFS liquid crystal display element, a horizontal electric field formed in a direction perpendicular to a line forming the comb shape of the pixel electrode 121 and a parabolic electric field can be used.
  • the electrode width l of the comb-shaped portion of the pixel electrode 121 and the gap m of the comb-shaped portion of the pixel electrode 121 are preferably formed to such a width that all the liquid crystal molecules in the liquid crystal layer 15 can be driven by the generated electric field. .
  • the interelectrode distance (minimum separation distance) R between the pixel electrode 121 and the common electrode 122 can be adjusted as the (average) film thickness of the gate insulating layer 112. Further, unlike the liquid crystal display element of the present invention, the inter-electrode distance (minimum separation distance) R between the pixel electrode 121 and the common electrode 122 is different between the first substrate 12 and the second substrate 17, unlike FIG. May be formed to be larger than the inter-substrate distance G (corresponding to the IPS type).
  • Such a liquid crystal display element has, for example, a configuration in which comb-like pixel electrodes and comb-like common electrodes are alternately provided in substantially the same plane.
  • the liquid crystal display element of the present invention is preferably an FFS type liquid crystal display element using a fringe electric field, and the shortest separation distance between the adjacent common electrode 122 and the pixel electrode 121 is the alignment films 14 (inter-substrate distance).
  • the distance is shorter than the shortest separation distance, a fringe electric field is formed between the common electrode and the pixel electrode, and the horizontal and vertical alignments of the liquid crystal molecules can be efficiently used.
  • the FFS type liquid crystal display element of the present invention when a voltage is applied to the liquid crystal molecules arranged so that the major axis direction is parallel to the alignment direction of the alignment film, the pixel electrode 121 and the common electrode 122 are interposed.
  • parabolic electric field lines are formed up to the top of the pixel electrode 121 and the common electrode 122, and are arranged perpendicular to the electric field in which the major axis of the liquid crystal molecules in the liquid crystal layer 15 is formed. Therefore, liquid crystal molecules can be driven even with low dielectric anisotropy.
  • the color filter 16 preferably forms a black matrix (not shown) in a portion corresponding to the thin film transistor and the storage capacitor 123 from the viewpoint of preventing light leakage.
  • the color filter 16 is usually formed by three filters of R (red), G (green), and B (blue), and constitutes one dot of an image or an image. For example, these three filters are gate wirings. It is lined up in the extending direction.
  • the color filter 16 can be produced by, for example, a pigment dispersion method, a printing method, an electrodeposition method, or a dyeing method. For example, a method for producing a color filter by a pigment dispersion method will be described.
  • a curable coloring composition for a color filter is applied on a transparent substrate, subjected to a patterning treatment, and cured by heating or light irradiation. By performing this process for each of the three colors red, green, and blue, a pixel portion for a color filter can be produced.
  • a so-called color filter on array in which pixel electrodes provided with active elements such as TFTs and thin film diodes are installed on the substrate may be employed.
  • a pair of alignment films 14 that are in direct contact with the liquid crystal composition constituting the liquid crystal layer 15 and induce homogeneous alignment are provided.
  • the polarizing plate 11 and the polarizing plate 18 can be adjusted so that the viewing angle and the contrast are good by adjusting the polarization axis of each polarizing plate, and the transmission axes operate in the normally black mode. It is preferable to have a perpendicular transmission axis. In particular, it is preferable that one of the polarizing plate 11 and the polarizing plate 18 is disposed so as to have a transmission axis parallel to the alignment direction of the liquid crystal molecules. Further, it is preferable to adjust the product of the refractive index anisotropy of the liquid crystal and the cell gap so that the contrast is maximized. Further, a retardation film for widening the viewing angle may be used.
  • the shortest separation distance between the adjacent common electrode and the pixel electrode is longer than the shortest separation distance between the liquid crystal alignment films,
  • the shortest separation distance between the adjacent common electrode and the pixel electrode is And those having a structure that is longer than the shortest separation distance between the liquid crystal alignment films.
  • the liquid crystal display element of the present invention for example, after a film is formed on a substrate having an electrode layer and / or a surface of the substrate, a pair of substrates are separated and faced so that the film is inside, and then the liquid crystal It is preferable to manufacture by filling the composition between the substrates. In that case, it is preferable to adjust the space
  • the spacer used for adjusting the distance between the substrates include columnar spacers made of glass particles, plastic particles, alumina particles, a photoresist material, and the like.
  • the VA-type, FFS-type, or IPS-type liquid crystal display elements described with reference to FIGS. 1 to 6 are examples of the liquid crystal display elements of the present invention, and these liquid crystal display elements do not depart from the technical idea of the present invention. Various changes can be made within the range.
  • the liquid crystal display of the present invention is characterized by including the liquid crystal display element of the present invention described above, and can have the same configuration as a known liquid crystal display except that the liquid crystal display element of the present invention is provided.
  • the liquid crystal display of the present invention can be used as a liquid crystal display in an image display device such as a liquid crystal television, a computer monitor, a mobile phone, an information terminal, or a game machine.
  • n a natural number
  • T NI Nematic phase-isotropic liquid phase transition temperature (° C)
  • T CN Solid phase-nematic phase transition temperature (° C)
  • T NI -T CN Nematic phase temperature range ⁇ n: Refractive index anisotropy at 20 ° C.
  • ⁇ Dielectric anisotropy at 20 ° C.
  • ⁇ 1 The rotational viscosity (mPa ⁇ s) at 20 ° C. was measured using a rotational viscosity measurement system (LCM-2 type) manufactured by Toyo Technica.
  • ⁇ The response time ( ⁇ ) at 20 ° C. of the IPS type liquid crystal display element was measured by an electro-optic measuring device DMS703 manufactured by autoronic.
  • Examples 1, 2, 3, 4 and Comparative Examples 1, 2, and 3 Liquid crystal compositions having the compositions (mass%) shown in Table 1 and Table 2 were prepared, and their physical properties (T NI , T CN , ⁇ n, ⁇ , ⁇ 1 ) were measured. The evaluation results are shown in Tables 1 and 2.
  • Example 1 The liquid crystal composition of Example 1, 2, 3 and 4, the refractive index anisotropy ([Delta] n) is large, the rotational viscosity gamma 1 is smaller superior low viscosity, the response time (tau) is small, that high-speed response It was confirmed that the value of the dielectric anisotropy ( ⁇ ) was negative.
  • the liquid crystal composition of the present invention has a negative dielectric anisotropy ( ⁇ ) value, a large refractive index anisotropy ( ⁇ n), and excellent low viscosity.
  • the present invention can be used for manufacturing display elements and liquid crystal displays.

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Abstract

L'invention concerne : une composition de cristaux liquides qui a une grande anisotropie de réfraction (∆n), une viscosité extrêmement faible et une anisotropie diélectrique négative (∆ε) ; un élément d'affichage à cristaux liquides qui utilise cette composition de cristaux liquides ; et un écran à cristaux liquides qui est pourvu de cet élément d'affichage à cristaux liquides. L'invention concerne une composition de cristaux liquides qui contient : un ou plusieurs composés représentés par la formule générale (i) et ayant une anisotropie diélectrique négative (∆ε) ; et un ou plusieurs composés représentés par la formule générale (ii). Dans les formules, Ri1 et Ri2 représentent chacun indépendamment un groupe alcényle contenant 2 à 8 atomes de carbone ; et Rii1 et Rii2 représentent chacun indépendamment un groupe alkyle contenant 1 à 8 atomes de carbone.
PCT/JP2017/041789 2016-12-06 2017-11-21 Composition de cristaux liquides, élément d'affichage à cristaux liquides et écran à cristaux liquides WO2018105378A1 (fr)

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