WO2005088360A1 - カラーフィルタ - Google Patents
カラーフィルタ Download PDFInfo
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- WO2005088360A1 WO2005088360A1 PCT/JP2005/003954 JP2005003954W WO2005088360A1 WO 2005088360 A1 WO2005088360 A1 WO 2005088360A1 JP 2005003954 W JP2005003954 W JP 2005003954W WO 2005088360 A1 WO2005088360 A1 WO 2005088360A1
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- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- YRHRIQCWCFGUEQ-UHFFFAOYSA-N thioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3SC2=C1 YRHRIQCWCFGUEQ-UHFFFAOYSA-N 0.000 description 1
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/201—Filters in the form of arrays
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
- G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
Definitions
- the present invention relates to a high-quality color filter that does not disturb liquid crystal alignment or the like when used in a liquid crystal display device.
- a method of forming a light-shielding portion on a transparent substrate on which the color filter is formed and forming a colored layer in the opening thereof is generally used.
- a light-shielding portion is formed by etching a metal thin film obtained by vacuum-depositing a metal such as chromium.
- a resin in which a black pigment or the like is dispersed has been applied, and photolithography has been carried out.
- a resin light-shielding portion formed by patterning by one method or the like has been developed and put into practical use.
- Such a light-shielding portion made of a resin has an advantage that a process such as vacuum deposition is not required as compared with a light-shielding portion made of a metal thin film, and is applicable to a large-area color filter.
- such a resin light-shielding portion needs to be a thick film in order to obtain a sufficient optical density as compared with a light-shielding portion made of a metal thin film such as chromium. Therefore, for the purpose of preventing white spots and the like, the thickness of the colored layer formed so as to cover a part of the resin matrix is increased, and the region where the light-shielding portion and the colored layer are laminated is: The difference in film thickness from the region where only the coloring layer is formed becomes large.
- a colored layer such as red (R), green (G), and blue (B) is formed a plurality of times on a transparent substrate on which a light-shielding portion is formed, the light-shielding portion and the coloring layer
- the difference in film thickness between the region where is laminated and the region where only the colored layer is formed is large.
- a method for forming such a colored layer of a color filter will be described with reference to FIG. 4, for example.
- a colored layer 3R of the first color is formed in the opening of the transparent substrate 1 on which the light shielding portion 2 is formed by a photolithography method or the like so as to partially cover the light shielding portion 2 (FIG. 4 (a)).
- a colored layer forming composition 4B for forming a second colored layer is applied on the transparent substrate 1 on which the colored layer 3R is formed (FIG. 4 (b)), and only the target area is cured. Then, a colored layer 3B is formed (FIG. 4 (c)).
- the colored layer type When the composition 4B was applied, the colored layer 3R was formed on the transparent substrate 1, and in the vicinity of the region where the colored layer 3R was formed, the colored layer forming composition applied thereon was formed. Thickness of object 4B increases. Accordingly, the thickness of the colored layer 3B formed by curing the colored layer forming composition 4B on the colored layer 3R side becomes larger than the thickness of the colored layer 3R.
- the coloring layer forming composition 4G formed in the third color is applied (FIG. 4 (d))
- the coloring layers 3R and 3G have already been formed on both sides of the coloring layer forming area. Therefore, the thickness of the colored layer forming composition 4G in the vicinity thereof increases, and when the colored layer 3G is cured by curing or the like, the light-shielding portion is compared with the colored layers 3R and 3B. The film thickness in the region stacked with 2 increases (Fig. 4 (e)).
- a colored layer 3 is formed in a striped shape on a transparent substrate on which a light shielding portion 2 is formed. Will be done.
- the light-shielding portion 2 is also formed so as to be orthogonal to the colored layer 3 also in the direction a.
- FIG. 5A FIG. 5A
- FIG. 5B When the light-shielding portion 2 is orthogonal to the coloring layer 3, the light-shielding portion 2 is entirely covered with the coloring layer 3.
- the present invention provides a transparent substrate, a light-shielding portion formed on the transparent substrate and containing at least a light-shielding material and a resin, an opening of the light-shielding portion on the transparent substrate, A color layer formed so as to cover a part of the color filter,
- the width of the thick film region where the light-shielding portion is located at the center of the light-shielding portion and is 85% or more of the maximum film thickness of the light-shielding portion is within a range of 30% to 60% of the light-shielding portion line width.
- the width of each of the thin-film regions located on both sides of the light-shielding portion and having a thickness of 50% or less of the maximum thickness of the light-shielding portion is within a range of 10% to 20% of the line width of the light-shielding portion.
- a color filter is provided.
- the width of the thick film region located at the center of the light shielding portion is within the above range, and the width of the thin film region located at both sides of the light shielding portion is within the above range. Therefore, the film thickness at the center of the light-shielding portion can be made relatively thin, and the light-shielding portion can have a gentle shape or the like. Accordingly, for example, when a composition for forming a colored layer for forming a colored layer on the light shielding portion is applied, the amount of the composition for forming a colored layer applied on the central portion of the light shielding portion is reduced. The thickness of the portion where the colored layer and the light-shielding portion overlap can be reduced.
- the color filter of the present invention is, for example, a color filter having a stripe-type coloring layer or the like, for example, the stripe-type coloring layer and the light-shielding portion are orthogonal to each other, and the stripe-type coloring layer and the light-shielding portion are laminated. Also in the portion, the thickness of the stripe-type coloring layer formed on the thick film region of the light-shielding portion can be made thin, and the difference in film thickness from the region where only the stripe-type coloring layer is formed is small. It can be.
- the maximum thickness of the overlapping portion where the coloring layer overlaps a part of the light shielding portion and the thickness of the central portion of the coloring layer formed in the opening of the light shielding portion are different.
- the difference is 0 It is preferably 5 m or less. This is a force that can reduce variations in the orientation of the liquid crystal layer formed on the color filter of the present invention, disconnection of the ITO film, and the like.
- the present invention also provides a transparent substrate, a light-shielding portion formed on the transparent substrate and containing at least a light-shielding material and a resin, and an opening of the light-shielding portion on the transparent substrate, A colored layer formed so as to cover a part of the light-shielding portion; and a crossing portion where the colored layer intersects with the light-shielding portion such that the colored layer covers the light-shielding portion.
- a color filter is provided, wherein the difference between the maximum thickness at the intersection and the thickness at the center of the colored layer formed in the opening of the light-shielding portion is 0.5 m or less. .
- the film thickness of the intersection such as a stripe-type color filter or a color filter having a colored layer formed in a bent pattern, having the above-mentioned intersection, Since the difference from the film thickness is within the above range, the liquid crystal layer formed on the color filter of the present invention may have a non-uniform orientation or a nonuniform gap with the opposing substrate. It can be small.
- the color filter of the present invention is, for example, a color filter having a stripe-type coloring layer
- the color filter also includes a portion where the stripe-type coloring layer and the light-shielding portion are orthogonal to each other and where the stripe-type coloring layer and the light-shielding portion are laminated.
- the thickness of the stripe-type coloring layer formed on the thick film region of the light-shielding portion can be reduced.
- the color filter of the present invention when used in a liquid crystal display device, the orientation of the liquid crystal layer formed on the color filter is disturbed, the ITO film is disconnected, and the gap between the opposing substrate is not affected. The degree of uniformity can be reduced.
- FIG. 1 is an explanatory view illustrating a color filter of the present invention.
- FIG. 2 is an explanatory view illustrating a light-shielding portion used in the present invention.
- FIG. 3 is an explanatory view illustrating a light-shielding portion used in the present invention.
- FIG. 4 is a process diagram illustrating an example of a method for forming a coloring layer of a general color filter.
- FIG. 5 is an explanatory view illustrating a general color filter having a stripe-type colored layer.
- FIG. 6 is an explanatory view illustrating a colored layer formed in a bent pattern in a horizontal electric field type color filter.
- the present invention relates to a high-quality color filter that does not disturb the liquid crystal alignment or the like when used in a liquid crystal display device, and has two embodiments. Hereinafter, each embodiment will be described in detail.
- a first embodiment of a color filter according to the present invention includes a transparent substrate, a light shielding portion formed on the transparent substrate and containing at least a light shielding material and a resin, and an opening of the light shielding portion on the transparent substrate. And a colored layer formed so as to cover a part of the light shielding portion,
- the width of the thick film region which is located at the center of the light-shielding portion and is 85% or more of the maximum film thickness of the light-shielding portion, is within a predetermined range with respect to the light-shielding portion line width.
- the width of each of the thin film regions located at 50% or less of the maximum film thickness of the light shielding portion is within a predetermined range with respect to the light shielding portion line width.
- the color filter of the present embodiment includes a transparent substrate 1, a light shielding portion 2 formed on the transparent substrate 1, and a part of the light shielding portion 2.
- the width m of the thick film region having a film thickness equal to or more than a predetermined ratio is within a predetermined range with respect to the light shielding unit line width n, and the maximum film thickness t of the light shielding unit on both sides of the light shielding unit 2
- the width y of the thin film region having a film thickness equal to or less than a predetermined ratio falls within a predetermined range with respect to the light shielding portion line width n.
- the light-shielding portion line width refers to the width from one end to the other end of the light-shielding portion.
- the side portion refers to a region including an end portion of the light shielding portion
- the center portion refers to a region including a maximum thickness portion of the light shielding portion.
- the shape of the light-shielding portion is the same as the shape of the light-shielding portion in the effective display area of the color filter.
- the light-shielding portion is formed in a portion where the colored layer and the light-shielding portion overlap. Since the film thickness is large, the colored layer is formed to be raised, and a difference in film thickness occurs between the region where only the colored layer is formed and a step. As a result, when a color filter is used in a liquid crystal display device, the alignment of the liquid crystal in a liquid crystal layer disposed on the step may be disturbed, causing light leakage, or the step may break the ITO film. Was.
- a gap between the color filter and the opposing substrate is maintained by using a bead-shaped spacer, the gap between the opposing substrate and the color filter is not fixed due to the step. There was a problem.
- the width of the thin film region at both sides where the width of the thick film region at the center of the light shielding portion is relatively narrow can be made relatively large.
- the thickness of the laminated layer of the colored layer and the light-shielding portion can be made relatively low, and the color formed in the opening of the light-shielding portion can be reduced.
- the difference from the thickness of the layer can be reduced. Therefore, when the color filter of the present embodiment is used in a liquid crystal display device, it is less likely to affect the orientation of the liquid crystal layer formed on the color filter and the ITO film and the like. Therefore, a high-quality color filter that can maintain a constant gap can be obtained.
- the thick film region is a region at the center of the light shielding portion that is 85% or more of the maximum film thickness of the light shielding portion, and the thin film region is 50% of the maximum film thickness of the light shielding portion. These are areas on both sides of the light-shielding section, as described below.
- the maximum thickness of the light-shielding portion means that the maximum thickness of each light-shielding portion is equal to the thickness of the portion.
- the width of the thick film region is preferably within a range of 30% to 60%, particularly 30% to 50% of the line width of the light shielding portion.
- the width of the thin film region that is, the distance to the portion where the end portion force of the light shielding portion is 50% of the maximum film thickness of the light shielding portion is 10% to 20% of the light shielding portion line width on both sides. Is preferably within the range.
- the width of the thick film region or the thin film region can be measured by, for example, calculating the equivalent force obtained by photographing the cross-sectional shape of the central portion of the light-shielding portion with a scanning electron microscope (SEM) or the like.
- SEM scanning electron microscope
- the maximum film thickness r of the overlapping portion 4 where the coloring layer 3 overlaps a part of the light shielding portion 2 and the light shielding portion 2 is not more than 0.3, preferably not more than 0.4111, and particularly preferably not more than 0.3 m.
- the overlapping portion refers to a region where the light shielding portion and the coloring layer are stacked
- the film thickness at the central portion of the coloring layer refers to, for example, a rectangular shape of the opening of the light shielding portion. In this case, it refers to the thickness of the colored layer at the intersection of the diagonal lines of the rectangle.
- the difference between the film thickness of all the overlapping portions and the film thickness of the central portion of the coloring layer is within the above range. Is preferred.
- the light-shielding portion used in the present embodiment is formed on a transparent substrate described later, and contains at least a light-shielding material and a resin, and is used as a light-shielding portion of a color filter. is there
- the shape of the light shielding portion in the present embodiment is not particularly limited as long as the width of the thick film region and the width of the thin film region are within a predetermined range. However, it is particularly preferable that it is formed so as to have a mountain shape. As a result, This is because the thickness of the coloring layer formed on the thick film region of the light part can be reduced.
- the width of the entire light-shielding portion used in the present embodiment ie, the line width of the light-shielding portion, usually depends on the shape of the color filter and the like. m—30 m, especially 16 ⁇ m—30 ⁇ m. In the case where the color filter of the present embodiment is used for mopiling, the line width of the light-shielding portion is preferably in the range of ⁇ 15 / zm. In addition, the height is also selected appropriately. Normally 0.5 ⁇ m—2.5 m, especially 0.8 ⁇ m—2.5 m, especially 0.8 ⁇ m—1.5 ⁇ m Degree.
- a colored layer described later is formed so as to cover a part of the light-shielding portion. Usually, it is about 2 m—10 / zm, preferably about —. Thereby, a high-quality color filter free from white spots or the like can be obtained.
- the light-shielding portion contains at least a light-shielding material and a resin
- the materials and the like are not particularly limited.
- the light-shielding portion can be formed as a composition for forming a light-shielding portion by adding a monomer or the like.
- the light-shielding material a material used for a resin light-shielding portion generally used for a color filter can be used.
- light-shielding properties such as carbon fine particles, metal oxides, inorganic pigments, and organic pigments can be used. And the like.
- the resin contained in the light-shielding portion used in the present embodiment includes ethylene butyl acetate copolymer, ethylene monochloride copolymer, ethylene butyl copolymer, polystyrene, and acrylonitrile styrene copolymer.
- ABS resin polymethacrylic acid resin, ethylene-methacrylic acid resin, polychlorinated vinyl resin, chlorinated salted brewer, polybutylarco, senorelose acetate propionate, senorelose acetate Butyrate, nylon 6, nylon 66, nylon 12, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polybutylacetal, polyetheretherketone, polyethersulfone, polyphenylenesulfide, polyarylate, polybutylbutyral , Epoxy Xy resin, polyimide resin, polyamide imide resin, polyamic acid resin , Polyetherimide resin, phenol resin, urea resin and the like.
- polymerizable monomers such as methyl (meth) atalylate, ethyl (meth) atalylate, n-propyl (meth) atalylate, isopropyl (meth) atalylate, sec butyl (meth) atalylate, and isobutyl ( (Meth) acrylate, tert-butyl (meth) acrylate, n-pentyl (meth) acrylate, n-hexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, n-octyl (meth) )
- copolymers having at least one kind of power selected from the neutral power of anhydrous materials can also be exemplified.
- the above-mentioned copolymer may be exemplified by a polymer obtained by adding an ethylenically unsaturated compound having a glycidyl group or a hydroxyl group.
- a resin containing an ethylenically unsaturated bond is particularly preferably used because it forms a bridge bond with the monomer and provides excellent strength.
- Examples of the monomer that can be used for forming the light-shielding portion used in the present embodiment include a polyfunctional atalylate monomer, and a group containing an ethylenically unsaturated bond such as an acryl group or a methacryl group. Can be used.
- the polyfunctional atalylate monomers may be used in combination of two or more.
- the term (meth) acryl is meant to mean that of acrylic or methacryl.
- taste, (meta) acrylate refers to an amino acid group or a metathalylate which is a different group.
- Examples of the photoinitiator that can be used in the present embodiment include ultraviolet, ionizing radiation, visible light, or other wavelengths, in particular, a photoradical polymerization initiator that can be activated by an energy ray of 365 nm or less. Can be used. Specific examples of such a photopolymerization initiator include benzophenone, o-methyl methyl benzoylbenzoate, 4,4-bis (dimethylamine) benzophenone, 4,4-bis (getylamine) benzophenone, ⁇ -amino'acetophenone, and 4,4.
- the resin contained in the composition for forming a light-shielding portion may be a resin of the above-mentioned resin.
- a method of imparting thermoplasticity to the composition for forming a light-shielding portion by using a low-molecular material, or by adding a large amount of the above-mentioned monomers, and the like are exemplified.
- the composition is softened by applying heat to the light-shielding portion.
- the shape as described above can be obtained.
- the photoinitiator contained in the resin composition for example, a method of using a large amount of a surface-curable photoinitiator among the photoinitiators described above may be mentioned.
- a method of using a large amount of a surface-curable photoinitiator among the photoinitiators described above may be mentioned.
- the surface of the region where the light-shielding portion is formed is hardened, but light hardening has not completely progressed inside the light-shielding portion.
- etching is performed in a reverse tapered shape having a high angle. Therefore, after the etching is completed, the tapered portion is lowered by post-betaing the inverted tapered light-shielding portion, so that the light-shielding portion having the above-described shape can be formed.
- a method of pouring the composition for forming a light-shielding portion into a mold having a shape for forming the light-shielding portion, curing the composition, and then bonding the light-shielding portion on a transparent substrate can also be used. Further, by changing the exposure amount using a halftone mask, a light-shielding portion having the above-described shape can be formed.
- the shape and the like of the colored layer used in the present embodiment are not particularly limited as long as it is formed at the opening of the light shielding portion so as to cover a part of the light shielding portion as described above.
- a composition for forming a colored layer of three colors of red (R), green (G), and blue (B) for example, a strip type, a mosaic type, a triangle type, a four-pixel arrangement type, etc.
- the coloring area can be arbitrarily set.
- the opening refers to a region on the transparent substrate where the light shielding portion is formed.
- the advantage of the present embodiment can be utilized even in a region where the coloring layer and the light shielding portion are orthogonal to each other.
- the thickness of the colored layer formed in the present embodiment is a force which is appropriately selected depending on the intended color filter. Normally, about 1. O / zm—about 3. O / zm, especially 1.2 ⁇ ⁇ ⁇ ⁇ ⁇ -2.5 m is preferable. Thereby, the difference in film thickness between the region formed in the opening of the light shielding portion and the region formed on the light shielding portion can be reduced.
- the color layer used in the present embodiment can be formed by a method used in the production of a general color filter, such as a photolithography method or an inkjet method. Further, the material of the coloring layer used in the present embodiment can be the same as the coloring layer used for a general color filter, and thus detailed description is omitted here.
- the transparent substrate used in the present embodiment is not particularly limited as long as it is generally used for a color filter, and has no flexibility such as quartz glass, Neurex (registered trademark) glass, and a synthetic quartz plate.
- a transparent rigid material or a flexible transparent material having flexibility such as a transparent resin film or an optical resin plate can be used.
- the color filter in the present embodiment is not particularly limited as long as the light-shielding portion and the colored layer are formed on the transparent substrate described above.
- a protective layer or an electrode may be used.
- a layer or the like may be formed.
- a second embodiment of the color filter of the present invention includes a transparent substrate, a light shielding portion formed on the transparent substrate and containing at least a light shielding material and a resin, and an opening of the light shielding portion on the transparent substrate. Having a colored layer formed so as to cover a part of the light shielding portion, A color filter having an intersection where the colored layer and the light-shielding portion intersect so that the colored layer covers the light-shielding portion,
- the difference between the maximum thickness at the intersection and the thickness at the center of the colored layer formed in the opening of the light-shielding portion is within a predetermined range.
- intersection portion refers to a region where the colored layer and the light-shielding portion intersect, where the colored layer and the light-shielding portion intersect.
- a color filter having such an intersection for example, a color filter having a striped colored layer 3 as shown in FIG.
- the light-shielding portion 2 is also formed in the direction a in FIG. 5A, so that, for example, as shown in FIG. This is because the portion where the layer 3 intersects is covered with the colored layer 3.
- the colored layer 3 has a bent pattern. And the like.
- a horizontal electric field type color filter for example, as disclosed in Japanese Patent Application Laid-Open No. 9-311334, a colored layer formed in a pattern bent from a plane such as a viewing angle is generally used. This is because, even in such a color filter, a light-shielding portion is formed to intersect with the coloring layer in order to partition the coloring layer, similarly to the above-mentioned stripe type coloring layer.
- the difference between the maximum film thickness at the intersection and the film thickness at the center of the colored layer formed at the opening of the light-shielding portion is within a predetermined range, For example, as shown in a cross-sectional view in the b direction of FIG. 5A (FIG. 3), a light shielding portion 2 formed on a transparent substrate 1 and a colored layer formed to cover the entire light shielding portion 2 3 and a thickness f at the center of the striped colored layer 3 formed in the opening of the light-shielding portion 2 so as to be within a predetermined range.
- the color filter of this embodiment when used in a liquid crystal display device, the orientation of the liquid crystal formed on the color filter is disturbed, and the ITO film formed on the color filter is broken. In addition, it is possible to reduce the problem that the gap between the opposing substrate and the color filter is not constant!
- the difference between the thickness of the intersection and the thickness of the center of the colored layer is specifically 0.5 m or less. It should be below 0.1 m / zm—O. 4111, especially 0.1 m / zm—O. 2 m.
- the maximum film thickness at the intersection portion means the film thickness at the portion where the film thickness of the light-shielding portion and the coloring layer at the intersection portion is maximum.
- the method and material for forming the color filter Although there is no particular limitation, the use of the light-shielding portion of the color filter described in the above-mentioned ⁇ 1.
- First Embodiment '' makes it possible to realize the above-described film thickness difference. Power preferred.
- the light-shielding portion, the colored layer, the transparent substrate, and the like used in the present embodiment can be the same as those in "1. First Embodiment" described above, and thus detailed description is omitted here. You. Further, the color filter of the present embodiment may have other members as needed.
- a glass substrate having a thickness of 0.7 mm (1737 glass manufactured by Corning Incorporated) was prepared.
- a photosensitive resin composition for a black matrix having the following composition was applied to the entire surface of one side of the substrate, dried, and heated on a hot plate. Then, after exposing through a predetermined photomask, it was excessively developed and baked to form a black matrix (line width: 14.4 m, thickness: 1: m). At this time, the thick film region was 5.8 / ⁇ , and the thin film region was 2.4 m.
- the photosensitive resin composition has the following composition. The same applies to the photosensitive resin composition used in the following examples.
- each coating liquid for a red pattern, a green pattern, and a blue pattern having the following composition is adjusted, and the red pattern, the green pattern, and the A blue pattern (each thickness 1.7 m) was formed to form a color filter.
- the difference between the maximum thickness of the overlapped portion where the colored layer overlaps a part of the light shielding portion of the formed color filter and the thickness of the central portion of the colored layer formed at the opening of the light shielding portion is 0.3. ⁇ m.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optical Filters (AREA)
- Liquid Crystal (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020067018636A KR101092164B1 (ko) | 2004-03-12 | 2005-03-08 | 컬러 필터 |
JP2006510936A JP4919030B2 (ja) | 2004-03-12 | 2005-03-08 | カラーフィルタ |
US10/592,346 US7948697B2 (en) | 2004-03-12 | 2005-03-08 | Method for producing a color filter |
US13/083,884 US8179623B2 (en) | 2004-03-12 | 2011-04-11 | Method for producing a color filter |
US13/364,553 US8315002B2 (en) | 2004-03-12 | 2012-02-02 | Method for producing a color filter |
Applications Claiming Priority (2)
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JP2004070621 | 2004-03-12 | ||
JP2004-070621 | 2004-03-12 |
Related Child Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/592,346 A-371-Of-International US7948697B2 (en) | 2004-03-12 | 2005-03-08 | Method for producing a color filter |
US13/083,884 Division US8179623B2 (en) | 2004-03-12 | 2011-04-11 | Method for producing a color filter |
US13/083,884 Continuation US8179623B2 (en) | 2004-03-12 | 2011-04-11 | Method for producing a color filter |
Publications (1)
Publication Number | Publication Date |
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WO2005088360A1 true WO2005088360A1 (ja) | 2005-09-22 |
Family
ID=34975727
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/003954 WO2005088360A1 (ja) | 2004-03-12 | 2005-03-08 | カラーフィルタ |
Country Status (6)
Country | Link |
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US (3) | US7948697B2 (ja) |
JP (1) | JP4919030B2 (ja) |
KR (1) | KR101092164B1 (ja) |
CN (1) | CN100399068C (ja) |
TW (1) | TWI363197B (ja) |
WO (1) | WO2005088360A1 (ja) |
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JP2008298826A (ja) * | 2007-05-29 | 2008-12-11 | Toppan Printing Co Ltd | カラーフィルタ、カラーフィルタ基板ならびに液晶表示装置 |
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US7522235B2 (en) | 2004-09-15 | 2009-04-21 | Lg Display Co., Ltd. | Substrate for liquid crystal display device and method of fabricating the same |
WO2009069362A1 (ja) * | 2007-11-29 | 2009-06-04 | Sharp Kabushiki Kaisha | カラーフィルタ基板、液晶表示パネル、液晶表示装置、及び、カラーフィルタ基板の製造方法 |
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- 2005-03-08 KR KR1020067018636A patent/KR101092164B1/ko not_active Expired - Fee Related
- 2005-03-08 WO PCT/JP2005/003954 patent/WO2005088360A1/ja active Application Filing
- 2005-03-08 CN CNB2005800076669A patent/CN100399068C/zh not_active Expired - Fee Related
- 2005-03-11 TW TW094107492A patent/TWI363197B/zh not_active IP Right Cessation
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2011
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---|---|---|---|---|
US7522235B2 (en) | 2004-09-15 | 2009-04-21 | Lg Display Co., Ltd. | Substrate for liquid crystal display device and method of fabricating the same |
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WO2014115367A1 (ja) * | 2013-01-25 | 2014-07-31 | 凸版印刷株式会社 | カラーフィルタ基板、液晶表示装置、及びカラーフィルタ基板の製造方法 |
US9753323B2 (en) | 2013-01-25 | 2017-09-05 | Toppan Printing Co., Ltd. | Color filter substrate, liquid crystal display device, and method for manufacturing color filter substrate |
Also Published As
Publication number | Publication date |
---|---|
JP4919030B2 (ja) | 2012-04-18 |
TWI363197B (en) | 2012-05-01 |
KR101092164B1 (ko) | 2011-12-13 |
JPWO2005088360A1 (ja) | 2008-01-31 |
KR20070003924A (ko) | 2007-01-05 |
CN1930499A (zh) | 2007-03-14 |
US20070206303A1 (en) | 2007-09-06 |
US20110189599A1 (en) | 2011-08-04 |
TW200533962A (en) | 2005-10-16 |
US8315002B2 (en) | 2012-11-20 |
US8179623B2 (en) | 2012-05-15 |
CN100399068C (zh) | 2008-07-02 |
US7948697B2 (en) | 2011-05-24 |
US20120129085A1 (en) | 2012-05-24 |
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