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WO2018154855A1 - Dispositif optique - Google Patents

Dispositif optique Download PDF

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Publication number
WO2018154855A1
WO2018154855A1 PCT/JP2017/039502 JP2017039502W WO2018154855A1 WO 2018154855 A1 WO2018154855 A1 WO 2018154855A1 JP 2017039502 W JP2017039502 W JP 2017039502W WO 2018154855 A1 WO2018154855 A1 WO 2018154855A1
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WO
WIPO (PCT)
Prior art keywords
layer
terminal portion
optical device
substrate
base material
Prior art date
Application number
PCT/JP2017/039502
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English (en)
Japanese (ja)
Inventor
伊藤　宜弘
Original Assignee
パナソニックＩｐマネジメント株式会社
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Publication of WO2018154855A1 publication Critical patent/WO2018154855A1/fr

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    • 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • 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
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • 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
    • G02F1/29—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 position or the direction of light beams, i.e. deflection

Definitions

  • the present invention relates to an optical device capable of controlling the light distribution of incident light.
  • Patent Document 1 discloses a liquid crystal optical element in which liquid crystal molecules are uniformly aligned on a prism having irregularities.
  • a terminal portion may be formed on the peripheral portion of the optical device. Such a terminal portion is likely to cause disconnection of the wiring pattern.
  • the present invention provides an optical device in which the terminal portion is not easily damaged.
  • An optical device includes a light-transmitting first substrate having a first substrate layer and a first electrode layer disposed on one main surface of the first substrate layer, and a second substrate.
  • a translucent second substrate having a second electrode layer disposed on one main surface of the material layer and the second base material layer, and disposed between the first electrode layer and the second electrode layer,
  • a light control layer having a concavo-convex layer and a liquid crystal layer; and a sealing member that seals an end of the liquid crystal layer.
  • a first terminal portion in which a concavo-convex layer is laminated is formed, and the first terminal portion includes an exposed portion in which the first electrode layer is exposed because the concavo-convex layer is not laminated.
  • an optical device in which the terminal portion is not easily damaged is realized.
  • FIG. 1 is a plan view of an optical device according to an embodiment.
  • FIG. 2 is a cross-sectional view of the optical device taken along line II-II in FIG.
  • FIG. 3 is a cross-sectional view of the optical device taken along line III-III in FIG.
  • FIG. 4 is a diagram for explaining the traveling direction of the light incident on the optical device in the first mode.
  • FIG. 5 is a diagram for explaining the traveling direction of light incident on the second mode optical device.
  • FIG. 6 is a first diagram illustrating an example of use of the optical device.
  • FIG. 7 is a second diagram illustrating an example of use of the optical device.
  • FIG. 8 is a first cross-sectional view of the optical device according to the first modification.
  • FIG. 9 is a second cross-sectional view of the optical device according to the first modification.
  • FIG. 10 is a cross-sectional view of an optical device according to the second modification.
  • FIG. 11 is a plan view of an optical device according to the third modification.
  • 12 is a cross-sectional view of the optical device taken along line XII-XII in FIG.
  • FIG. 13 is a schematic cross-sectional view illustrating the structure of the light control layer according to Modification 4 in a state in which no voltage is applied.
  • FIG. 14 is a schematic cross-sectional view showing the structure of the light control layer according to Modification 4 in a voltage application state of the first polarity.
  • FIG. 15 is a schematic cross-sectional view showing the structure of the light control layer according to Modification 4 in a voltage application state of the second polarity.
  • the X axis, the Y axis, and the Z axis represent the three axes of the three-dimensional orthogonal coordinate system.
  • the Z axis direction is the vertical direction and the Z axis is perpendicular to the Z axis.
  • the direction (direction parallel to the XY plane) is the horizontal direction.
  • the X axis and the Y axis are orthogonal to each other and both are orthogonal to the Z axis.
  • the plus direction in the Z-axis direction is defined as a vertically downward direction.
  • plane view means a view from a direction perpendicular to the main surface of the first substrate or the second substrate.
  • FIG. 1 is a plan view of an optical device according to an embodiment.
  • FIG. 2 is a cross-sectional view of the optical device taken along line II-II in FIG.
  • FIG. 3 is a cross-sectional view of the optical device taken along line III-III in FIG.
  • the optical device 100 is a light control device that controls light incident on the optical device 100.
  • the optical device 100 is a light distribution control element that can change the traveling direction of light incident on the optical device 100 (that is, distribute light) and emit the light.
  • the optical device 100 includes a main body portion 103, a first terminal portion 101, and a second terminal portion 102 in a plan view.
  • the main body 103 is a portion that is surrounded by the sealing member 40 and has a rectangular shape in plan view, and is a portion that can control the traveling direction of light incident on the optical device 100.
  • the main body 103 includes a light distribution control area (active area).
  • the light distribution control region is a region (effective region) in which light distribution control of light incident on the optical device 100 is substantially possible.
  • the first terminal portion 101 and the second terminal portion 102 are terminal structures for supplying power to the optical device 100 located outside the sealing member 40, and are electrically connected to an external power source by a wire or a lead wire. Is done.
  • An alternating voltage may be applied to the first terminal portion 101 and the second terminal portion 102, or a direct current voltage may be applied.
  • the optical device 100 specifically includes a light-transmitting first substrate 10 and a light-transmitting second substrate 20 disposed to face the first substrate 10. And a light control layer 30 disposed between the first substrate 10 and the second substrate 20, and a sealing member 40.
  • a light control layer 30 disposed between the first substrate 10 and the second substrate 20, and a sealing member 40.
  • the first substrate 10 is a light-transmitting substrate and includes a first base material layer 11 and a first electrode layer 12.
  • the first electrode layer 12 is disposed on one main surface of the first base material layer 11.
  • the second substrate 20 is a light-transmitting substrate and includes a second base material layer 21 and a second electrode layer 22.
  • the second electrode layer 22 is disposed on one main surface of the second base material layer 21.
  • the first substrate 10 and the second substrate 20 have a predetermined shape so that the first electrode layer 12 included in the first substrate 10 and the second electrode layer 22 included in the second substrate 20 face each other. They are arranged at intervals. That is, the first substrate 10 and the second substrate 20 are counter substrates that are arranged so that one of them faces the other.
  • the first base material layer 11 and the second base material layer 21 are formed of a material having translucency.
  • the first base material layer 11 and the second base material layer 21 are formed of, for example, a resin material.
  • resin materials include polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC), polystyrene (PS), polyvinyl alcohol (PVA), triacetyl cellulose (TAC), acrylic (PMMA) or epoxy. Etc.
  • the first base material layer 11 and the second base material layer 21 may not be formed of a sheet-like rigid material.
  • the first base material layer 11 and the second base material layer 21 may be formed of a flexible film-like material having flexibility.
  • the rigid material include PC and PMMA, and examples of the flexible material include PET, PEN, PS, PVA, and TAC.
  • the 1st base material layer 11 and the 2nd base material layer 21 may be formed with glass materials, such as soda glass, an alkali free glass, or high refractive index glass.
  • the first base material layer 11 and the second base material layer 21 may be made of the same material, or may be made of different materials.
  • planar view shape of the first base material layer 11 and the second base material layer 21 is, for example, a rectangular shape (square or rectangular), but is not limited thereto, and is a circular shape or a polygon other than a square shape. Any shape may be employed.
  • the first base material layer 11 and the second base material layer 21 are formed of PET.
  • the first electrode layer 12 is disposed between the first base material layer 11 and the light control layer 30. Specifically, the first electrode layer 12 is formed on one main surface of the first base material layer 11 (main surface on the light control layer 30 side).
  • the first electrode layer 12 is a solid electrode and is formed in a thin film shape on almost the entire main surface of one side of the first base material layer 11.
  • the second electrode layer 22 is disposed between the light control layer 30 and the second base material layer 21. Specifically, the second electrode layer 22 is formed on one main surface (the main surface on the light control layer 30 side) of the second base material layer 21.
  • the second electrode layer 22 is a solid electrode and is formed in a thin film shape on almost the entire main surface of one side of the second base material layer 21.
  • the first electrode layer 12 and the second electrode layer 22 are electrically paired and can apply an electric field to the light control layer 30.
  • the voltage applied to the first electrode layer 12 and the second electrode layer 22 the alignment state of the liquid crystal molecules contained in the liquid crystal layer 32 of the light control layer 30 can be changed. Thereby, the refractive index of the liquid crystal layer 32 can be changed.
  • the first electrode layer 12 and the second electrode layer 22 are formed of a material having translucency and conductivity.
  • Such materials include ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), ZnO (Zinc Oxide), GZO doped with Ga in ZnO, AZO doped with Al in ZnO, silver, etc.
  • Examples thereof include a conductor-containing resin made of a resin containing a conductor such as nanowires or conductive particles, or a metal thin film such as a silver thin film.
  • the first electrode layer 12 and the second electrode layer 22 may have a single-layer structure of these materials, or a stacked structure of these materials (for example, a stacked structure of a transparent metal oxide and a metal thin film). There may be.
  • an alignment film may be formed on the surfaces of the first substrate 10 and the second substrate 20 in order to align the liquid crystal molecules of the liquid crystal layer 32 of the light control layer 30.
  • the alignment film is formed on the surface of the first electrode layer 12 of the first substrate 10 on the light control layer 30 side.
  • the alignment film may be subjected to an alignment process such as a rubbing process or an optical process, or may be an inorganic alignment film made of a SiO 2 film that does not require an alignment process.
  • the alignment film may be formed on the surface of the uneven layer 31.
  • the alignment film is formed by a photo-alignment film by light treatment or dry coating such as sputtering so that the uneven layer 31 is not deteriorated or damaged.
  • An inorganic alignment film is preferable.
  • the light control layer 30 has translucency and transmits incident light.
  • the light control layer 30 functions as a light distribution layer that can distribute incident light. That is, the light control layer 30 can change the traveling direction of light when passing through the light control layer 30.
  • the light control layer 30 is disposed between the first electrode layer 12 and the second electrode layer 22 and has an uneven layer 31 and a liquid crystal layer 32.
  • the uneven layer 31 and the liquid crystal layer 32 are in contact with each other.
  • the concavo-convex layer 31 is a concavo-convex structure having a plurality of micro-order sized or nano-order sized convex portions.
  • the plurality of convex portions are formed in a stripe shape.
  • each convex portion has a trapezoidal cross-sectional shape and is a long, substantially quadrangular prism shape extending in the X-axis direction, and is arranged at equal intervals along the Z-axis direction.
  • the height of each convex part is, for example, 100 nm or more and 100 ⁇ m or less.
  • interval of adjacent convex parts is a predetermined space
  • each of the plurality of convex portions is a tapered shape that becomes narrower from the first substrate 10 toward the second substrate 20.
  • Each of the pair of side surfaces included in one convex portion is an inclined surface inclined at a predetermined inclination angle with respect to the thickness direction, and the distance between the pair of side surfaces (the width of the convex portion) is from the second substrate 20 to the first The size gradually decreases toward the substrate 10.
  • the convex portion is not limited to a substantially quadrangular prism shape, and may have a substantially triangular prism shape with a triangular cross-sectional shape or other shapes.
  • the side surface of the convex portion is an interface between the convex portion and the liquid crystal layer 32.
  • the light incident on the concave / convex layer 31 from the first substrate 10 side is reflected and refracted according to the refractive index difference between the concave / convex layer 31 and the liquid crystal layer 32 on the side surface of the convex portion (interface between the convex portion and the liquid crystal layer 32). Or transmitted without being reflected or refracted.
  • adjacent convex portions are connected to each other at the root portion, but may be separated.
  • the material of the concavo-convex layer 31 (convex portion) is a light-transmissive resin material such as an acrylic resin, an epoxy resin, or a silicone resin.
  • the uneven layer 31 can be formed by, for example, molding or nanoimprinting.
  • the concavo-convex layer 31 (convex portion) is made of an acrylic resin having a refractive index of 1.5.
  • the liquid crystal layer 32 is disposed in a recess formed between the plurality of protrusions in the uneven layer 31.
  • the liquid crystal layer 32 is an example of a refractive index adjustment layer.
  • the liquid crystal layer 32 is made of a liquid crystal material containing liquid crystal molecules. Examples of the liquid crystal material include nematic liquid crystal or cholesteric liquid crystal in which liquid crystal molecules are rod-like molecules. The liquid crystal material may be twisted nematic liquid crystal (TN liquid crystal).
  • the liquid crystal molecules of the liquid crystal layer 32 have birefringence.
  • the liquid crystal layer 32 since the refractive index of the uneven layer 31 is 1.5, the liquid crystal layer 32 has an ordinary light refractive index (no) of 1.5 and an extraordinary light refractive index (ne) of 1.7.
  • a positive type liquid crystal material is used. Note that a negative liquid crystal material may be used for the liquid crystal layer 32.
  • the liquid crystal layer 32 functions as a refractive index adjusting layer capable of adjusting the refractive index in the visible light region when an electric field is applied. Specifically, since the liquid crystal layer 32 is composed of liquid crystal having liquid crystal molecules having electric field responsiveness, an electric field is applied to the liquid crystal layer 32 (that is, the first electrode layer 12 and the second electrode layer). 22), the alignment state of the liquid crystal molecules changes and the refractive index of the liquid crystal layer 32 changes.
  • the sealing member 40 seals the end portion of the liquid crystal layer 32.
  • the sealing member 40 is formed on the entire periphery of the end portion of the liquid crystal layer 32 so as to surround the liquid crystal layer 32 along the end portion of the liquid crystal layer 32.
  • the sealing member 40 is, for example, a sealing resin such as an adhesive.
  • the first terminal portion 101 and the second terminal portion 102 are portions of the optical device 100 that are located outside the main body portion 103 (sealing member 40) in plan view.
  • the first electrode layer 12 included in the first terminal portion 101 and the second electrode layer 22 included in the second terminal portion 102 are extraction electrodes (extraction electrodes).
  • the first terminal portion 101 has a structure in which the first substrate 10 and the uneven layer 31 are laminated.
  • the second terminal portion 102 is formed by a part of the second substrate 20 being positioned outside the sealing member 40.
  • the concave / convex layer 31 is not laminated on the two substrates 20.
  • strength of the 1st terminal part 101 was improved and the stress was added to the 1st terminal part 101.
  • the disconnection of the wiring pattern at the time is suppressed.
  • the thickness t (illustrated in FIG. 2) of the first terminal portion 101 is preferably 100 ⁇ m or more. Thereby, sufficient strength can be given to the first terminal portion 101.
  • the uneven layer 31 is partially removed to expose the first electrode layer 12.
  • the first terminal portion 101 includes an exposed portion 101a (shown in FIG. 2) where the first electrode layer 12 is exposed because the uneven layer 31 is not laminated.
  • a power supply wire or a lead wire is connected to the first electrode layer 12 exposed from the exposed portion 101a.
  • the exposed part 101a is a place away from the boundary part with the main-body part 103 (sealing member 40) among the 1st terminal parts 101. Located in. Accordingly, the uneven layer 31 can be disposed over the entire boundary portion between the main body portion 103 and the first terminal portion 101. If the uneven layer 31 is thus disposed, the first terminal portion is disposed along the boundary portion. The occurrence of breakage due to the bending of 101 is suppressed.
  • the first terminal portion 101 and the second terminal portion 102 are formed on one side of the four sides of the main body portion 103, but may be formed on a side different from the one side. Further, the side where the first terminal portion 101 is formed may be different from the side where the second terminal portion 102 is formed.
  • the first terminal portion 101 may have a third electrode layer electrically connected to the second electrode layer 22 and insulated from the first electrode layer 12 in a state of being laminated with the uneven layer 31.
  • a via structure is used for electrical connection between the second electrode layer 22 and the third electrode layer.
  • the two electrode layers (the first electrode layer 12 and the third electrode layer) for supplying power to the optical device 100 can be integrated into the first terminal portion 101 with improved strength.
  • the second terminal portion 102 may be omitted.
  • the first terminal portion 101 when the third electrode layer is disposed on the first terminal portion 101, the first terminal portion 101 includes an exposed portion where the third electrode layer is exposed because the uneven layer 31 is not laminated.
  • the place where this exposed part is formed is not particularly limited, the first terminal part 101 may be formed at a place away from the boundary part with the main body part 103 (sealing member 40). Accordingly, the uneven layer 31 can be disposed over the entire boundary portion between the main body portion 103 and the first terminal portion 101. If the uneven layer 31 is thus disposed, the first terminal portion is disposed along the boundary portion. The occurrence of breakage due to the bending of 101 is suppressed.
  • the optical device 100 is in the first mode when no voltage is applied to the first terminal portion 101 (first electrode layer 12) and the second terminal portion 102 (second electrode layer 22). In the voltage application state in which a voltage is applied to the part 101 and the second terminal part 102, the second mode is set.
  • FIG. 4 is a diagram for explaining the traveling direction of light incident on the optical device 100 in the first mode
  • FIG. 5 is a diagram for explaining the traveling direction of light incident on the optical device 100 in the second mode.
  • the liquid crystal material of the liquid crystal layer 32 is a positive type having an extraordinary refractive index of 1.7 and an ordinary refractive index of 1.5. Moreover, the refractive index of the uneven
  • the liquid crystal molecules 32a of the liquid crystal layer 32 are aligned horizontally with respect to the first substrate 10 and the second substrate 20, and the refractive index of the liquid crystal layer 32 is 1.7. In this case, there is a difference in refractive index between the uneven layer 31 and the liquid crystal layer 32.
  • incident light for example, sunlight
  • incident light that is incident on the first mode optical device 100 from an oblique direction
  • the concave / convex layer 31 and the liquid crystal layer 32 (the convex of the concave / convex layer 31).
  • the light is totally reflected by the upper side surface of the part, and the traveling direction is bent, and the light is emitted from the optical device 100 to the outside.
  • the liquid crystal molecules 32 a of the liquid crystal layer 32 are aligned vertically to the first substrate 10 and the second substrate 20.
  • the refractive index of the liquid crystal layer 32 is 1.5, and there is no difference in refractive index between the uneven layer 31 and the liquid crystal layer 32.
  • incident light incident on the second mode optical device 100 from an oblique direction goes straight without being refracted and reflected at the interface between the concavo-convex layer 31 and the liquid crystal layer 32 to be optical.
  • the light is emitted from the device 100 to the outside.
  • the optical device 100 is an active light control device in which the refractive index matching between the uneven layer 31 and the liquid crystal layer 32 changes depending on the voltage (electric field).
  • the optical device 100 is used by being bonded to a window, for example.
  • 6 and 7 are diagrams showing examples of using the optical device.
  • the optical device 100 is installed in the window 91 of the building 90, so that the window 91 is provided with a light distribution function.
  • the optical device 100 is bonded to the indoor side of the window 91 via an adhesive layer.
  • the optical device 100 is disposed such that the first substrate 10 is located on the outdoor side and the second substrate 20 is located on the indoor side.
  • the optical device 100 in the first mode irradiates sunlight on the indoor ceiling of the building 90.
  • the optical device 100 in the second mode irradiates sunlight on the floor surface in the room of the building 90.
  • a first reinforcing member may be disposed on the other main surface of the first base material layer 11.
  • a second reinforcing member may be disposed on the other main surface of the second base material layer 21 in the second terminal portion.
  • 8 and 9 are cross-sectional views of the optical device according to the first modification. 8 is a cross-sectional view corresponding to FIG. 2, and FIG. 9 is a cross-sectional view corresponding to FIG.
  • the first reinforcing member 51 is disposed on the other main surface of the first base material layer 11.
  • the second reinforcing member 52 is disposed on the other main surface of the second base material layer 21.
  • the strength of the first terminal portion 101 is improved, and disconnection of the wiring pattern when stress is applied to the first terminal portion 101 is suppressed.
  • the thickness t1 of the first terminal portion 101 is preferably 100 ⁇ m or more. Thereby, sufficient strength can be given to the first terminal portion 101.
  • the strength of the second terminal portion 102 is improved, and disconnection of the wiring pattern when stress is applied to the second terminal portion 102 is suppressed.
  • the thickness t2 of the second terminal portion 102 is preferably 100 ⁇ m or more. Thereby, sufficient strength can be given to the second terminal portion 102.
  • the 1st reinforcement member 51 and the 2nd reinforcement member 52 are formed with the various resin materials similar to the 1st base material layer 11, for example.
  • the 1st reinforcement member 51 may be selectively arrange
  • the second region is a region that does not overlap with the light distribution control region (liquid crystal layer 32) in plan view.
  • the first reinforcing member 51 is a predetermined region (for example, the first region or the second region) including at least the first region corresponding to the first terminal portion 101 in the other main surface of the first base material layer 11. Area).
  • the second reinforcing member 52 is a predetermined region (for example, the first region or the second region) including at least the first region corresponding to the first terminal portion 101 in the other main surface of the first base material layer 11. Area). The same applies to the second reinforcing member 52.
  • a release sheet (release film) may be used as the first reinforcing member 51 and the second reinforcing member 52.
  • the release sheet is attached to the entire surface of the other main surface of the first base material layer 11 (the entire surface including the portion corresponding to the main body portion 103). Although most of the release sheet attached to the optical device 100a is peeled off at the time of shipment, the release sheet is shipped while remaining in the predetermined area requiring reinforcement. This remaining release sheet becomes the first reinforcing member 51.
  • the manufacturing method of the optical device 100a includes a step of peeling (partially) the release sheet attached to the entire surface of the other main surface of the first base material layer 11 except for the predetermined region. The same applies to the second reinforcing member 52.
  • FIG. 10 is a cross-sectional view of the optical device according to the second modification.
  • a third reinforcing member 53 is disposed on the surface of the uneven layer 31.
  • the third reinforcing member 53 is formed, for example, by applying a resin material after a power supply wire or a lead wire is connected to the first electrode layer 12 exposed from the exposed portion 101a. In this case, the unevenness of the uneven layer 31 is filled with the third reinforcing member 53.
  • the 3rd reinforcement member 53 may be formed by affixing to the uneven
  • the strength of the first terminal portion 101 is improved, and disconnection of the wiring pattern when stress is applied to the first terminal portion 101 is suppressed.
  • the thickness t1 of the first terminal portion 101 is preferably 100 ⁇ m or more. Thereby, sufficient strength can be given to the first terminal portion 101.
  • the optical device 100b includes the first reinforcing member 51, but may not include the first reinforcing member 51. That is, the optical device 100 b may include only the third reinforcing member 53 among the first reinforcing member 51 and the third reinforcing member 53. Also in this case, the thickness t1 of the first terminal portion 101 (the total thickness of the first substrate 10, the uneven layer 31, and the third reinforcing member 53) is preferably 100 ⁇ m or more.
  • the sealing resin is used for sealing, but at least one of the first base material layer 11 and the second base material layer 21 is melted by laser light or the like, thereby sealing the liquid crystal layer 32.
  • a stop may be made.
  • the sealing member according to the above embodiment may be formed by melting at least one of the first substrate 10 and the second substrate 20 with laser light or the like.
  • FIG. 11 is a plan view of the optical device according to the third modification.
  • 12 is a cross-sectional view of the optical device taken along line XII-XII in FIG.
  • a sealing portion 71 (schematically illustrated by a solid line in FIG. 11) is formed along the end portions of the first substrate 10 and the second substrate 20. ing.
  • the sealing portion 71 is formed by melting at least one of the first substrate 10 and the second substrate 20 with laser light or the like.
  • the main material for forming the sealing portion 71 is the same as the material for forming the first base material layer 11 and the second base material layer 21.
  • the first electrode layer 12 and the second electrode layer 22 are easily melted. Since it is necessary to maintain the first electrode layer 12 in the vicinity of the first terminal portion 101, a sealing method for melting the first substrate 10 and the second substrate 20 is not appropriate. Similarly, since it is necessary to maintain the second electrode layer 22 in the vicinity of the second terminal portion 102, a sealing method for melting the first substrate 10 and the second substrate 20 is not appropriate.
  • a sealing portion 72 different from the sealing portion 71 is formed in the vicinity of the first terminal portion 101 and in the vicinity of the second terminal portion 102.
  • the sealing portion 72 is made of, for example, a laser beam or the like made of a sheet-like resin material disposed between the first substrate 10 and the second substrate 20 (more specifically, between the first substrate 10 and the uneven layer 31). It is formed by being melted by.
  • the sealing part 72 adheres the first substrate 10 and the uneven layer 31. Note that the intensity of the laser light for forming the sealing portion 71 is higher than the intensity of the laser light for forming the sealing portion 72, for example.
  • the sealing portion 72 is formed in place of the sealing portion 71 in the vicinity of the first terminal portion 101 and in the vicinity of the second terminal portion 102. Thereby, the disconnection of the 1st terminal part 101 and the 2nd terminal part 102 based on irradiation of the laser beam for forming the sealing part 71 is suppressed.
  • refractive index adjustment layer may be used for the light control layer instead of the liquid crystal layer.
  • the refractive index adjusting layer may be a layer having different light action depending on the applied electric field.
  • an electrophoretic layer may be used as the refractive index adjustment layer.
  • 11 to 13 are schematic cross-sectional views showing the structure of a light control layer in which an electrophoretic layer is used as the refractive chamber adjusting layer.
  • a DC voltage may be applied between the two electrode layers.
  • the light control layer 60 shown in FIGS. 13 to 15 includes an uneven layer 61 and an electrophoretic layer 62.
  • the electrophoretic layer 62 countless nanoparticles 64 to be charged are dispersed in the insulating liquid 63.
  • a fluorocarbon hydrogen solution or silicon oil having a refractive index (solvent refractive index) of about 1.3 to about 1.5 is used as the insulating liquid 63, and a zirconia having a refractive index of 2.1 is used as the nanoparticle 64. Particles are used.
  • the average refractive index of the entire electrophoretic layer 62 in a state in which no voltage is applied is 1.6, and a voltage application state of the first polarity (FIG.
  • the concentration of the nanoparticles 64 in the insulating liquid 63 is such that the refractive index at the interface of the uneven layer 61 of the electrophoretic layer 62 is 1.8. It only needs to be adjusted.
  • the unevenness of the electrophoretic layer 62 in the voltage application state of the second polarity opposite to the first polarity (FIG. 15: the state where the nanoparticles 64 are aggregated on the first electrode layer 12 side facing the uneven layer 61).
  • the refractive index at the interface of the layer 61 may be 1.5, which is equal to the refractive index of the uneven layer 61.
  • the optical device 100 includes the first base layer 10 and the first base layer 10 having the first electrode layer 12 disposed on one main surface of the first base layer 11, A translucent second substrate 20 having a second electrode layer 22 disposed on one main surface of the second base material layer 21 and the second base material layer 21, and the first electrode layer 12 and the second electrode layer 22. And a light control layer 30 having a concavo-convex layer 31 and a liquid crystal layer 32, and a sealing member 40 that seals an end of the liquid crystal layer 32.
  • a first terminal portion 101 in which the first substrate 10 and the concavo-convex layer 31 are laminated is formed in a portion outside the sealing member 40 in plan view, and the concavo-convex layer 31 is laminated in the first terminal portion 101.
  • the exposed portion 101a where the first electrode layer 12 is exposed due to the absence of the first electrode layer 12 is included.
  • the liquid crystal layer 32 is an example of a refractive index adjustment layer.
  • the optical device 100 may have an electrophoretic layer 62 instead of the liquid crystal layer 32.
  • strength of the 1st terminal part 101 was improved and the stress was added to the 1st terminal part 101.
  • the disconnection of the wiring pattern at the time is suppressed. That is, the optical device 100 in which the first terminal portion 101 is hardly damaged is realized.
  • the exposed portion 101a may be located at a location away from the boundary portion with the sealing member 40 in the first terminal portion 101.
  • the uneven layer 31 can be disposed over the entire boundary portion between the main body portion 103 and the first terminal portion 101. If the uneven layer 31 is thus disposed, the first terminal portion is disposed along the boundary portion. The occurrence of breakage due to the bending of 101 is suppressed.
  • the first reinforcing member 51 may be disposed on the other main surface of the first base material layer 11.
  • the strength of the first terminal portion 101 is improved, and disconnection of the wiring pattern when stress is applied to the first terminal portion 101 is suppressed.
  • the first reinforcing member 51 may be a release sheet.
  • the strength of the first terminal portion 101 can be improved by using the release sheet that is originally peeled off at the time of shipment without partially peeling off.
  • a third reinforcing member 53 may be disposed on the surface of the uneven layer 31.
  • the strength of the first terminal portion 101 is improved, and disconnection of the wiring pattern when stress is applied to the first terminal portion 101 is suppressed.
  • the thickness of the first terminal portion 101 may be 100 ⁇ m or more.
  • the second substrate 20 may be formed outside the sealing member 40 in plan view to form the second terminal portion 102.
  • the second reinforcing member 52 may be disposed on the other main surface of the second base material layer 21.
  • the strength of the second terminal portion 102 is improved, and disconnection of the wiring pattern when stress is applied to the second terminal portion 102 is suppressed.
  • the second reinforcing member 52 may be a release sheet.
  • the strength of the second terminal portion 102 can be improved by using the release sheet that is originally peeled off at the time of shipment without partially peeling.
  • the thickness of the second terminal portion 102 may be 100 ⁇ m or more.
  • each of the plurality of convex portions constituting the concave-convex layer has a long shape, but the plurality of convex portions may be arranged in dots. .
  • the plurality of convex portions may have different shapes.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Liquid Crystal (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)

Abstract

Ce dispositif optique (100) comprend : un premier substrat transmettant la lumière (10) qui a une première couche de matériau de base (11) et une première couche d'électrode (12) qui est disposée sur une surface principale de la première couche de matériau de base (11); un second substrat de transmission de lumière (20) qui a une seconde couche de matériau de base (21) et une seconde couche d'électrode (22) qui est disposée sur une surface principale de la seconde couche de matériau de base (21); une couche de commande de lumière (30) qui est disposée entre la première couche d'électrode (12) et la seconde couche d'électrode (22), et qui comprend une couche en retrait et en saillie (31) et une couche de cristaux liquides (32); et un élément d'étanchéité (40) qui scelle le bord de la couche de cristaux liquides (32). Lorsqu'elle est vue en plan, une première partie de borne (101), où le premier substrat (10) et la couche en creux et en saillie (31) sont stratifiés, est formée dans une partie à l'extérieur de l'élément d'étanchéité (40); et la première partie de borne (101) comprend une partie d'exposition (101a) où la première couche d'électrode (12) est exposée étant donné que la couche en creux et en saillie (31) n'est pas stratifiée sur celle-ci.
PCT/JP2017/039502 2017-02-24 2017-11-01 Dispositif optique WO2018154855A1 (fr)

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JP2017033605A JP2020064090A (ja) 2017-02-24 2017-02-24 光学デバイス
JP2017-033605 2017-02-24

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6186724A (ja) * 1984-10-04 1986-05-02 Canon Inc グレ−テイング型光制御素子
JP2000187238A (ja) * 1998-12-24 2000-07-04 Seiko Epson Corp 液晶装置およびその製造方法並びに液晶表示装置およびそれを備えた電子機器
JP2000321591A (ja) * 1999-05-14 2000-11-24 Nec Corp 液晶表示装置
JP2007128697A (ja) * 2005-11-02 2007-05-24 Funai Electric Co Ltd コネクタに対するフラットケーブルの接続構造
WO2016163079A1 (fr) * 2015-04-07 2016-10-13 パナソニックＩｐマネジメント株式会社 Dispositif de commande de la lumière
WO2016185692A1 (fr) * 2015-05-21 2016-11-24 パナソニックＩｐマネジメント株式会社 Dispositif optique

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6186724A (ja) * 1984-10-04 1986-05-02 Canon Inc グレ−テイング型光制御素子
JP2000187238A (ja) * 1998-12-24 2000-07-04 Seiko Epson Corp 液晶装置およびその製造方法並びに液晶表示装置およびそれを備えた電子機器
JP2000321591A (ja) * 1999-05-14 2000-11-24 Nec Corp 液晶表示装置
JP2007128697A (ja) * 2005-11-02 2007-05-24 Funai Electric Co Ltd コネクタに対するフラットケーブルの接続構造
WO2016163079A1 (fr) * 2015-04-07 2016-10-13 パナソニックＩｐマネジメント株式会社 Dispositif de commande de la lumière
WO2016185692A1 (fr) * 2015-05-21 2016-11-24 パナソニックＩｐマネジメント株式会社 Dispositif optique

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