WO2023100677A1 - 調光装置およびパネルユニット - Google Patents

調光装置およびパネルユニット Download PDF

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Publication number
WO2023100677A1
WO2023100677A1 PCT/JP2022/042767 JP2022042767W WO2023100677A1 WO 2023100677 A1 WO2023100677 A1 WO 2023100677A1 JP 2022042767 W JP2022042767 W JP 2022042767W WO 2023100677 A1 WO2023100677 A1 WO 2023100677A1
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WO
WIPO (PCT)
Prior art keywords
light control
substrate
control panel
adhesive layer
panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2022/042767
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
康一 長尾
健夫 小糸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Display Inc
Original Assignee
Japan Display Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Japan Display Inc filed Critical Japan Display Inc
Priority to JP2023564876A priority Critical patent/JP7672512B2/ja
Publication of WO2023100677A1 publication Critical patent/WO2023100677A1/ja
Priority to US18/672,387 priority patent/US20240319528A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • 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
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or 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
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G02F1/13471—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/38—Anti-reflection arrangements
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/28—Adhesive materials or arrangements

Definitions

  • the present disclosure relates to a light control device and a panel unit.
  • the light control device of Patent Document 1 includes a light control panel.
  • a light control panel has a plurality of substrates and a liquid crystal layer enclosed between these substrates. When incident light enters the light control panel, the light transmittance of the incident light is adjusted at the light control panel, and this adjusted transmitted light exits the light control device.
  • the light control device may be damaged and the damaged parts may scatter.
  • the present disclosure has been made in view of the above, and it is an object of the present disclosure to provide a light control device and a panel unit capable of suppressing the scattering of the damaged parts even if they are damaged due to the impact of dropping.
  • a plurality of light control panels including a first substrate and a second substrate overlapping one side of a first direction intersecting the first substrate are laminated in the first direction.
  • an optical sheet adhered to the light control panel while overlapping the light control panel; and a light source positioned on the other side of the panel unit in the first direction, wherein the optical The sheet is attached to the second substrate of the first light control panel located closest to one side in the first direction in the panel unit, and the first light control panel of the second light control panel located closest to the other side in the first direction in the panel unit. and/or the substrate.
  • a plurality of light control panels including a first substrate and a second substrate overlapping one side of a first direction intersecting the first substrate are laminated in the first direction.
  • the first substrate is formed larger than the second substrate in plan view, and the plurality of light control panels separates a third light control panel and a fourth light control panel adjacent in the first direction.
  • the fourth light control panel is arranged on one side in the first direction with respect to the third light control panel, and the second substrate of the third light control panel and the and an adhesive layer for bonding with a first substrate, wherein the adhesive layer is provided on the entire surface of the first substrate of the fourth light control panel.
  • FIG. 1 is a schematic diagram of the light control panel according to the first embodiment viewed from above.
  • FIG. 2 is a schematic view of the surface of the array substrate according to the first embodiment, viewed from above.
  • FIG. 3 is a schematic diagram showing the surface, which is the surface on which the wiring is provided, by turning over the counter substrate according to the first embodiment.
  • 4 is a cross-sectional view taken along line IV-IV of FIG. 2.
  • FIG. 5A is a schematic diagram showing a cross section of the light control device of the first embodiment.
  • FIG. 5B is a schematic diagram showing a cross section of a light control device according to a modification.
  • FIG. 6 is a schematic diagram showing a cross section of the light control device of the second embodiment.
  • FIG. 5A is a schematic diagram showing a cross section of the light control device of the first embodiment.
  • FIG. 5B is a schematic diagram showing a cross section of a light control device according to a modification.
  • FIG. 6 is a schematic diagram showing
  • FIG. 7 is a schematic diagram showing a cross section of the light control device of the third embodiment.
  • FIG. 8 is a schematic diagram showing a cross section of a light control device according to another modification.
  • FIG. 9 is a schematic diagram showing a cross section of a light control device according to still another modification.
  • FIG. 10 is a schematic diagram showing a cross section of a light control device according to still another modification.
  • FIG. 11 is a schematic diagram showing a cross section of a light control device according to still another modification.
  • the X direction is the horizontal direction, and the X1 side is opposite to the X2 side.
  • the X1 side is also referred to as the left side and the X2 side is also referred to as the right side.
  • the Y direction is the front-to-rear direction, and the Y1 side is opposite to the Y2 side.
  • the Y1 side is also called the front side, and the Y2 side is also called the rear side.
  • the Z direction is the vertical direction (stacking direction).
  • the Z1 side is opposite to the Z2 side.
  • the Z1 side is also referred to as the upper side and the Z2 side is also referred to as the lower side.
  • the Z direction is also called the first direction, and the X and Y directions are also called the second directions.
  • the Z2 side is also referred to as one side in the first direction, and the Z1 side is also referred to as the other side in the first direction.
  • FIG. 1 is a schematic diagram of the light control panel according to the first embodiment viewed from above.
  • FIG. 2 is a schematic view of the surface of the array substrate according to the first embodiment, viewed from above.
  • FIG. 3 is a schematic diagram showing the surface, which is the surface on which the wiring is provided, by turning over the counter substrate according to the first embodiment.
  • the light control panel 1 includes an array substrate (first substrate) 2 and a counter substrate (second substrate) 3 arranged above the array substrate 2 .
  • the light control panel 1 has a regular octagonal shape in plan view, and includes a first side 11, a second side 12, a third side 13, a fourth side 14, a fifth side 15, a sixth side 16, It has a seventh side 17 and an eighth side 18 .
  • the shape of the light control panel 1 is not particularly limited, and polygonal shapes other than the octagonal shape, circular shapes, and elliptical shapes are also included in the present invention.
  • the first side 11 is located on the Y1 side of the light control panel 1.
  • the first side 11 is parallel to the X direction in the figure.
  • the first side 11 of the light control panel 1 matches the first side 211 of the array substrate 2 shown in FIG.
  • the first side 311 of the counter substrate 3 shown in FIG. Therefore, as shown in FIG. 1, when the counter substrate 3 is stacked on the array substrate 2, the end portion 2c of the array substrate 2 on the Y1 side is exposed.
  • a first terminal group 10 is provided at the end portion 2c.
  • the second side 12 is located on the X1 side of the light control panel 1.
  • the second side 12 is parallel to the Y direction in the drawing.
  • the second side 12 of the light control panel 1 matches the second side 212 of the array substrate 2 shown in FIG.
  • the second side 312 of the counter substrate 3 shown in FIG. Therefore, as shown in FIG. 1, when the opposing substrate 3 is stacked on the array substrate 2, the end portion 2d of the array substrate 2 on the X1 side is exposed.
  • a second terminal group 20 is provided at the end portion 2d.
  • the third side 13 crosses both the X1 direction and the Y1 direction.
  • the crossing angle is 45 degrees.
  • the third side 13 matches the third side 213 of the array substrate 2 shown in FIG.
  • the third side 313 of the counter substrate 3 shown in FIG. In other words, the third side 313 of the counter substrate 3 is positioned closer to the center C than the third side 213 of the array substrate 2 in plan view. Therefore, as shown in FIG. 1, when the counter substrate 3 is stacked on the array substrate 2, the end portion 2e of the array substrate 2 is exposed.
  • the fourth side 14 intersects both the X1 direction and the Y2 direction.
  • the crossing angle is 45 degrees.
  • the fourth side 14 overlaps with the fourth side 214 of the array substrate 2 shown in FIG. 2 and the fourth side 314 of the opposing substrate 3 shown in FIG.
  • the fifth side 15 is located on the Y2 side of the light control panel 1.
  • the fifth side 15 overlaps the fifth side 215 of the array substrate 2 shown in FIG. 2 and the fifth side 315 of the opposing substrate 3 shown in FIG.
  • the sixth side 16 crosses both the X2 direction and the Y2 direction.
  • the crossing angle is 45 degrees.
  • the sixth side 164 overlaps the sixth side 216 of the array substrate 2 shown in FIG. 2 and the sixth side 316 of the opposing substrate 3 shown in FIG.
  • the seventh side 17 is located on the X2 side of the light control panel 1.
  • the seventh side 17 overlaps with the seventh side 217 of the array substrate 2 shown in FIG. 2 and the seventh side 317 of the opposing substrate 3 shown in FIG.
  • the eighth side 18 crosses both the X2 direction and the Y1 direction.
  • the crossing angle is 45 degrees.
  • the eighth side 18 overlaps with the eighth side 218 of the array substrate 2 shown in FIG. 2 and the eighth side 318 of the opposing substrate 3 shown in FIG.
  • the area of the counter substrate 3 is smaller than the area of the array substrate 2, the first terminal group 10 provided at the end 2c of the array substrate 2 and the second terminal group 10 provided at the end 2d. terminal group 20 is exposed.
  • FIG. 3 is a schematic diagram showing a surface 3a, which is a surface on which wiring is provided, of the front surface and the back surface of the opposing substrate 3.
  • the directions of X1 and X2 on the opposing substrate 3 in FIG. 3 are opposite to the directions of X1 and X2 on the array substrate 2 in FIG.
  • FIG. 2 shows a center line CL1 passing through the center of the array substrate 2 in the X direction and extending in the Y direction, and a center line CL2 passing through the center of the array substrate 2 in the Y direction and extending in the X direction.
  • FIG. 2 shows a center line CL1 passing through the center of the array substrate 2 in the X direction and extending in the Y direction, and a center line CL2 passing through the center of the array substrate 2 in the Y direction and extending in the X direction.
  • the first end 21 on the second side 212 side (or the third side 213 side) of the center of the first side 211 is provided with a first terminal group 10 . That is, the end portion 2c is the end portion on the Y1 side of the array substrate 2, and the first end portion 21 indicated by a two-dot chain line is arranged on the X1 side of the center line CL1 in the portion of the end portion 2c.
  • a first terminal group 10 is provided at the first end portion 21 . As shown in FIG.
  • the first terminal group 10 includes a first terminal 101 , a second terminal 102 , a third terminal 103 and a fourth terminal 104 .
  • the first terminal 101, the second terminal 102, the third terminal 103, and the fourth terminal 104 are arranged in order in the X direction (fourth direction) from the X1 side to the X2 side.
  • These terminals 101 to 104 have a pair of short sides 105 parallel to the first side 211 and a pair of long sides 106 parallel to the second side 212 .
  • a second terminal group 20 is provided in the portion 22 (indicated by a two-dot chain line). That is, the end portion 2d is the end portion on the X1 side of the array substrate 2, and the second end portion 22 indicated by the two-dot chain line is arranged on the Y1 side of the center line CL2 in the portion of the end portion 2d.
  • a second terminal group 20 is provided at the second end 22 . As shown in FIG.
  • the second terminal group 20 includes fifth terminals 201 , sixth terminals 202 , seventh terminals 203 and eighth terminals 204 .
  • the fifth terminal 201, the sixth terminal 202, the seventh terminal 203, and the eighth terminal 204 are arranged in order from the Y1 side to the Y2 side in the front-rear direction (Y direction).
  • These terminals 201 to 204 have a pair of long sides 107 parallel to the first side 211 and a pair of short sides 108 parallel to the second side 212 .
  • Wiring is provided on one of the front surface and the back surface of the substrate. That is, the surface on which the wiring is provided is defined as the front surface, and the surface opposite to the front surface is defined as the back surface.
  • the surface 2a of the array substrate 2 is provided with wiring, liquid crystal driving electrodes, and connecting portions.
  • the connection portion C1 of the array substrate 2 and the connection portion C3 (see FIG. 3) of the counter substrate 3 are electrically connected via conductive columns (not shown) capable of conducting.
  • the connection portion C2 of the array substrate 2 and the connection portion C4 (see FIG. 3) of the counter substrate 3 are electrically connected via a conductive common electrode (not shown).
  • the first terminal 101 and the fifth terminal 201 are electrically connected via a wiring (first wiring) 241 .
  • a branch point 242 is provided in the middle of the wiring 241, and the wiring extends from the branch point 242 to the connecting portion C1.
  • the second terminal 102 and the sixth terminal 202 are electrically connected via wires (second wires) 243 and 245 .
  • a branch point 244 is provided on the wiring 243 , and a wiring 246 extends from the branch point 244 to an end 247 .
  • the third terminal 103 and the seventh terminal 203 are electrically connected via a wiring (third wiring) 248 .
  • the fourth terminal 104 and the eighth terminal 204 are electrically connected via wiring (fourth wiring) 249 and 251 .
  • the wiring 249 extends from the fourth terminal 104 to the branch point 250 toward the X2 side.
  • a wiring 251 extends from the branch point 250 to the eighth terminal 204 .
  • the wiring extends from the branch point 250 to the connecting portion C2.
  • a plurality of liquid crystal drive electrodes 261 are connected to wirings 243 and 246 .
  • the liquid crystal drive electrode 261 extends linearly along the X direction.
  • the liquid crystal drive electrodes 261 are arranged at regular intervals in the Y direction.
  • a plurality of liquid crystal drive electrodes 262 are connected to wiring 248 .
  • the liquid crystal drive electrodes 262 extend linearly along the X direction.
  • the liquid crystal drive electrodes 262 are arranged at regular intervals in the Y direction.
  • the liquid crystal driving electrodes 261 and the liquid crystal driving electrodes 262 are arranged alternately in the Y direction.
  • the surface 3a of the opposing substrate 3 is provided with wiring, liquid crystal drive electrodes, and connection portions.
  • the centerlines CL1 and CL2 shown in FIG. 3 correspond to the centerlines CL1 and CL2 shown in FIG.
  • connection portion C3 is connected to wirings 342 and 343 via a branch point 341 .
  • Wire 342 extends to end 348 .
  • Wire 343 extends to end 349 .
  • the connection portion C4 is connected to wirings 345 and 346 via a branch point 344 .
  • Wire 346 extends to end 347 .
  • a plurality of liquid crystal driving electrodes 361 are connected to wirings 342 and 343 .
  • the liquid crystal drive electrode 361 extends linearly along the Y direction.
  • the liquid crystal drive electrodes 361 are arranged at regular intervals in the X direction.
  • a plurality of liquid crystal drive electrodes 362 are connected to wiring 346 .
  • the liquid crystal drive electrodes 362 extend linearly along the Y direction.
  • the liquid crystal drive electrodes 362 are arranged at regular intervals in the X direction.
  • the liquid crystal drive electrodes 361 and the liquid crystal drive electrodes 362 are arranged alternately in the X direction.
  • FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. 2.
  • the light control panel 1 includes an array substrate 2 , a counter substrate 3 and a liquid crystal layer 4 .
  • the counter substrate 3 is arranged above the array substrate 2 (Z1 side).
  • a liquid crystal layer 4 is provided between the opposing substrate 3 and the array substrate 2 . That is, the surface 2a of the array substrate 2 and the surface 3a of the counter substrate 3 are arranged to face each other with the liquid crystal layer 4 interposed therebetween.
  • the back surface 2b is opposite to the front surface 2a of the array substrate 2, and the back surface 3b is opposite to the front surface 3a of the counter substrate 3.
  • FIG. 10 since the counter substrate 3 has a smaller area than the array substrate 2, the third terminals 103 provided on the surface 2a of the array substrate 2 are exposed.
  • the insulating layer is provided to prevent contact between two wirings, but in the light control panel 1 according to the present embodiment, the array substrate 2 does not have a portion where the wirings overlap, so the insulating layer is provided. do not have.
  • an alignment film 610 is laminated on both substrates and electrodes. Specifically, an alignment film 610 is laminated on the surface 2 a of the array substrate 2 , the liquid crystal driving electrodes 261 and 262 , and part of the third wiring 248 . An alignment film 610 is laminated on the surface 3 a of the counter substrate 3 and the upper surface of the liquid crystal driving electrode 361 . The array substrate 2 and counter substrate 3 are bonded together by a seal 600 surrounding the effective area, and the space formed by the seal 600 is filled with the liquid crystal layer 4 .
  • FIG. 5A is a schematic diagram showing a cross section of the light control device of the first embodiment.
  • the light control device 100 includes a panel unit 110, an optical sheet 5, and a light source 620. Further, the device main body 111 includes the panel unit 110 and the optical sheet 5 . In addition, in the light control device 100 according to the present embodiment, the liquid crystal cell for p-wave polarization and the liquid crystal cell for s-wave polarization are laminated and combined.
  • the panel unit 110 is formed by stacking a plurality of light control panels 1 in the Z direction (first direction).
  • a plurality of (four in the embodiment) light control panels 1 shown in FIG. 1 are laminated.
  • the four light control panels 1 are stacked in order from the top, with light control panels 1A, 1B, 1C, and 1D.
  • the light control panel 1A is also called a first light control panel.
  • the light control panel 1 ⁇ /b>A is arranged on the uppermost side among the four light control panels 1 .
  • the light control panel 1A is positioned closest to the Z2 side (one side in the first direction) among the plurality of light control panels.
  • the light control panel 1D is also called a second light control panel.
  • the light control panel 1 ⁇ /b>D is arranged on the lowest side among the four light control panels 1 .
  • the light control panel 1D is positioned closest to the Z1 side (the other side in the first direction) among the plurality of light control panels.
  • Light control panels 1B and 1C are stacked between light control panels 1A and 1D.
  • the light control panels 1A, 1B, 1C, and 1D are adhered via a second adhesive layer (adhesive layer) 72 . That is, all the light control panels adjacent to each other in the Z direction (first direction) are adhered via the second adhesive layer (adhesive layer) 72 . If the two light control panels adjacent in the Z direction are, for example, a light control panel 1B (fourth light control panel) and a light control panel 1C (third light control panel), the light control panel 1B (fourth light control panel panel) and the back surface 3b of the counter substrate 3 in the light control panel 1C (third light control panel) are bonded via the second adhesive layer 72 . Similarly, the light control panel 1A and the light control panel 1B, and the light control panel 1C and the light control panel 1D are bonded with the second adhesive layer 72 .
  • the second adhesive layer 72 is provided over the entire surface of the substrate (array substrate 2, counter substrate 3) in each of the light control panels 1A, 1B, 1C, and 1D.
  • the second adhesive layer 72 is provided on the entire rear surface 2b of the array substrate 2.
  • the second adhesive layer 72 extends from the X2 side end to the X1 side end of the rear surface 2b of the array substrate 2 in the X direction, and extends from the Y1 side end of the rear surface 2b of the array substrate 2 in the Y direction. It is provided up to the end on the Y2 side.
  • the second adhesive layer 72 is provided on the entire rear surface 3b of the counter substrate 3. As shown in FIG. Specifically, in the X direction, from the X2 side end to the X1 side end of the back surface 3b of the counter substrate 3, and in the Y direction, from the Y1 side end to the Y2 side end of the back surface 3b of the counter substrate 3. ing. Thus, the second adhesive layer 72 is provided over the entire surface of the counter substrate 3 of the third light control panel and the entire surface of the array substrate 2 of the fourth light control panel.
  • the end 2d on the X1 side of the array substrate 2 forms a frame area that does not overlap with the opposing substrate 3 in the Z direction.
  • the second adhesive layer 72 extends to the frame area outside the effective area. Although the lower surface of the second adhesive layer 72 provided in the frame area is exposed, the surface is cured to some extent.
  • the optical sheet 5 is, for example, a resin antireflection film 51 in the first embodiment.
  • the antireflection film 511 is adhered to the rear surface 3b of the counter substrate 3 of the light control panel 1A via the first adhesive layer 71.
  • the antireflection film 512 is adhered to the rear surface 2b of the array substrate 2 in the light control panel 1D via the first adhesive layer 71.
  • the first adhesive layer 71 and the second adhesive layer 72 are, for example, OCR (Optical Clear Resin) or OCA (Optical Clear Adhesive). Note that the first adhesive layer 71 and the second adhesive layer 72 may have these conductivity properties.
  • the size of the optical sheet 5 is substantially the same as the surface to which the optical sheet 5 is adhered.
  • the edge of the optical sheet 5 extends along the edge of the surface to which the optical sheet 5 is adhered.
  • the edges of the optical sheet 5 overlap the edges of the substrate surface to which the optical sheets 5 are adhered, or are so close to each other that they can be regarded as overlapping with the edges of the substrate surface. are doing.
  • the X1 side edge 511a of the antireflection film 511 coincides with the X1 side edge 3c of the opposing substrate 3 in the X direction.
  • the edge 511b on the X2 side of the antireflection film 511 coincides with the edge 3d on the X2 side of the opposing substrate 3 in the X direction.
  • the light source 620 is arranged on the Z1 side (lower side) of the panel unit 110 .
  • the light source 620 is, for example, a light source using a light emitting element such as a light emitting diode (LED), but is not limited to this, and may be a light source used for general illumination.
  • LED light emitting diode
  • a flexible printed circuit board (FPC: FLEXIBLE PRINTED CIRCUITS) 400 is provided in the terminal group (for example, the second terminal group 20) of the array substrate 2 in the light control panels 1A, 1B, 1C, and 1D. Connected.
  • FPC FLEXIBLE PRINTED CIRCUITS
  • the optical sheet 5 includes the rear surface 3b of the facing substrate 3 of the first light control panel (light control panel 1A) located on the uppermost side (one side in the first direction), and the optical sheet 5 located on the lowermost side. It is adhered to the rear surface 2b of the array substrate 2 of the second light control panel (light control panel 1D).
  • the optical sheet 5 is adhered to the upper side of the light control panel 1A arranged on the uppermost side of the panel unit 110 and the lower side of the light control panel 1D arranged on the lowermost side of the panel unit 110.
  • the optical sheet 5 and the adhesive layers can suppress scattering of the damaged parts. becomes.
  • the opposing substrate 3 of the third light control panel and the A second adhesive layer (adhesive layer) 72 is provided to join the array substrate 2 of the fourth light control panel.
  • the second adhesive layer 72 is provided over the entire surface of the counter substrate 3 of the third light control panel and the entire surface of the array substrate 2 of the fourth light control panel. More specifically, as shown in FIG. 5A, the second adhesive layer 72 is provided on the entire surface of the array substrate 2 of the third light control panel, and the second adhesive layer 72 is formed on the end portion of the third light control panel.
  • the end of the third light control panel and the end of the fourth light control panel face each other with the second adhesive layer 72 interposed therebetween.
  • the relationship between other light control panels and the second adhesive layer 72 is the same.
  • the second adhesive layer 72 is cured in the manufacturing process, and the second adhesive layer 72 is used in an uncured state. It does not stick to the part or FPC.
  • the optical sheet 5 includes antireflection films 511 and 512 .
  • a light source 620 is arranged on the Z1 side (lower side) of the second light control panel (light control panel 1D). That is, the light 621 emitted from the light source 620 enters the panel unit 110 from the light control panel 1D side.
  • the antireflection film 512 is adhered to the light control panel 1D, the light 621 is suppressed from being reflected toward the Z1 side, and the amount of the light 621 toward the Z2 side (upper side) is further increased. . Also, the light 621 traveling inside the panel unit 110 toward the Z2 side (upper side) exits from the light control panel 1A.
  • the antireflection film 511 is adhered to the light control panel 1A, the reflection of the light 621 toward the Z1 side is suppressed, and the amount of the light 621 emitted from the Z2 side (upper side) increases. .
  • the edge of the optical sheet 5 is provided along the edge of the surface of the substrate to which the optical sheet 5 is adhered. According to this, the optical sheet 5 is adhered to the substrate over a larger area. Therefore, when the light control device 100 is damaged due to the impact of dropping, the amount of scattered damaged parts is further reduced. Also, since the antireflection film 512 has a larger area, the amount of light 621 that reduces reflection can be increased.
  • FIG. 5B is a schematic diagram showing a cross section of a light control device according to a modification.
  • a light control device 100A shown in FIG. 5B differs from the light control device 100 shown in FIG. 5A in the position of the end portion 2d of the array substrate 2 .
  • a specific description will be given below.
  • the panel unit 110 is formed by laminating a plurality of light control panels 1 in the Z direction (first direction). Specifically, four light control panels 1 shown in FIG. 1 are laminated. As for the four light control panels 1, light control panels 1A, 1B, 1C, and 1D are stacked in order from the top.
  • the end portion 2d of the array substrate 2 is located at the end on the X1 side as in FIG. 5A.
  • the end portion 2c of the array substrate 2 is located at the end on the X2 side, opposite to FIG. 5A.
  • the end portion 2d of the array substrate 2 is located at the end on the X1 side as in FIG.
  • the end portion 2c of the array substrate 2 is located at the end on the X2 side, opposite to FIG. 5A. That is, the positions in the X direction of the ends 2c and 2d of the array substrate 2 in each light control panel alternate between the X1 side and the X2 side in the order of stacking.
  • the second adhesive layer 72 is provided over the entire surface of the substrate (array substrate 2, counter substrate 3) in each of the light control panels 1A, 1B, 1C, and 1D.
  • the second adhesive layer 72 is provided on the entire rear surface 2b of the array substrate 2. As shown in FIG. Specifically, the second adhesive layer 72 extends from the X2 side end to the X1 side end of the rear surface 2b of the array substrate 2 in the X direction, and extends from the Y2 side end of the rear surface 2b of the array substrate 2 in the Y direction.
  • the second adhesive layer 72 is provided on the entire rear surface 3b of the counter substrate 3. As shown in FIG. Specifically, the second adhesive layer 72 extends from the X2 side end to the X1 side end of the back surface 3b of the counter substrate 3 in the X direction, and extends from the Y2 side end of the back surface 3b of the counter substrate 3 in the Y direction. It is provided up to the end on the Y1 side. Thus, the second adhesive layer 72 is provided over the entire surface of the counter substrate 3 of the third light control panel and the entire surface of the array substrate 2 of the fourth light control panel.
  • the two light control panels adjacent in the Z direction are the third light control panel and the fourth light control panel, and the Z2 side of the third light control panel (the When the fourth light control panel is arranged on one side of one direction), the second adhesive layer 72 is applied to the entire surface of the counter substrate 3 of the third light control panel and the entire surface of the array substrate 2 of the fourth light control panel.
  • FIG. 6 is a schematic diagram showing a cross section of the light control device of the second embodiment.
  • a light control device 100B according to the second embodiment further includes a triacetyl cellulose (TAC) film 52 in addition to the light control device 100 according to the first embodiment.
  • TAC triacetyl cellulose
  • the optical sheet 5 includes an antireflection film 51 and a triacetylcellulose film 52.
  • the antireflection film 51 and the triacetyl cellulose film 52 are provided in the panel unit 110 in a laminated state.
  • the triacetyl cellulose film 521 is adhered via the first adhesive layer 71 to the rear surface 3b of the counter substrate 3 of the light control panel 1A.
  • the lower surface 521b of the triacetylcellulose film 521 is adhered to the rear surface 3b of the counter substrate 3 via the first adhesive layer 71.
  • the antireflection film 511 is adhered to the upper surface 521a of the triacetyl cellulose film 521 with the first adhesive layer 71 interposed therebetween.
  • the triacetyl cellulose film 522 is adhered via the first adhesive layer 71 to the rear surface 2b of the array substrate 2 in the light control panel 1D.
  • the upper surface 522a of the triacetyl cellulose film 522 is adhered to the rear surface 2b of the array substrate 2 via the first adhesive layer 71.
  • the antireflection film 512 is adhered to the lower surface 522b of the triacetylcellulose film 522 via the first adhesive layer 71.
  • the antireflection film 51 and the triacetylcellulose film 52 are laminated.
  • the triacetylcellulose film 52 is positioned on the substrate side, and the antireflection film 51 is positioned on the opposite side of the substrate to the triacetylcellulose film 52 .
  • the triacetyl cellulose film 52 can reduce the ultraviolet component in the light 621 . As a result, deterioration of the light control panel 1 due to the ultraviolet component can be suppressed.
  • FIG. 7 is a schematic diagram showing a cross section of the light control device of the third embodiment.
  • the light control device 100C according to the third embodiment is provided with an antireflection film on the light control panel to be laminated, and the device main body (panel unit and optical sheet) is held by the frame. A detailed description will be given below.
  • the antireflection film 513 is adhered to the rear surface 2b of the array substrate 2 in the light control panel 1A via the first adhesive layer 71.
  • the antireflection film 514 is adhered to the rear surface 3b of the counter substrate 3 of the light control panel 1B via the first adhesive layer 71. As shown in FIG. These antireflection film 513 and antireflection film 514 face each other in the Z direction. An adhesive layer may be provided between these anti-reflective films 513 and 514 to adhere them to each other.
  • the antireflection film 515 is adhered to the rear surface 2b of the array substrate 2 in the light control panel 1B via the first adhesive layer 71.
  • the antireflection film 516 is adhered to the rear surface 3b of the counter substrate 3 of the light control panel 1B via the first adhesive layer 71. As shown in FIG. These antireflection film 515 and antireflection film 516 face each other in the Z direction. An adhesive layer may be provided between these anti-reflective films 515 and 516 to adhere them to each other.
  • the antireflection film 517 is adhered to the rear surface 2b of the array substrate 2 in the light control panel 1C via the first adhesive layer 71.
  • the antireflection film 518 is adhered to the rear surface 3b of the counter substrate 3 of the light control panel 1D via the first adhesive layer 71. As shown in FIG. These antireflection film 517 and antireflection film 518 face each other in the Z direction. An adhesive layer may be provided between these anti-reflective films 517 and 518 to adhere them to each other.
  • the device main body 111 including the panel unit 110 and the optical sheet 5 is held by the frame 8 .
  • the frame 8 has a first frame 81 and a second frame 82 .
  • the first frame 81 holds the portion of the device main body 111 on the X1 side.
  • the second frame 82 holds the portion of the device main body 111 on the X2 side.
  • the first frame 81 has a second leg portion 811 , a frame body portion 812 and a first leg portion 813 .
  • the second leg 811 extends in the X direction.
  • Second leg 811 extends from end 814 to end 815 .
  • Frame body portion 812 extends in the Z direction from end 815 to end 816 .
  • First leg 813 extends in the X direction from end 816 to end 817 .
  • the first frame 81 has a substantially U-shaped cross section.
  • the second frame 82 has a second leg portion 821 , a frame body portion 822 and a first leg portion 823 .
  • the second leg 821 extends in the X direction.
  • Second leg 821 extends from end 824 to end 825 .
  • Frame body portion 822 extends in the Z direction from end 825 to end 826 .
  • First leg 823 extends in the X direction from end 826 to end 827 .
  • the second frame 82 has a substantially U-shaped cross section.
  • the frame 8 includes frame body portions 812 and 822 provided on the side portions (end portions in the second direction crossing the first direction) of the device body 111 and extending in the vertical direction, , first legs 813 and 823 extending in the X direction (second direction) along the upper end (one end in the first direction) of the device body 111 , and the frame body 812 extending from the lower end of the device body 111 . and second leg portions 811 and 821 extending in the X direction (second direction) along the portion (end portion on the other side in the first direction).
  • the first adhesive layer 71 is provided on the entire surface of the array substrate 2 . That is, the first adhesive layer 71 is provided along the X direction from the end on the X2 side to the end on the X1 side of the array substrate 2 . More specifically, it is provided on the entire surface of the array substrate 2 so as to cover not only the effective area through which light passes but also the frame area such as the terminal area.
  • the antireflection films 511 , 512 , 513 , 514 , 515 , 516 , 517 , and 518 are provided along the X direction from the X2 side end to the X1 side end of the array substrate 2 and the counter substrate 3 .
  • the antireflection film on the array substrate 2 side has the same size as the array substrate 2 in plan view, and is adhered to the entire surface of the array substrate 2 .
  • the antireflection film on the counter substrate 3 side has the same size as the counter substrate 3 in plan view, and is adhered to the entire surface of the counter substrate 3 .
  • the light control device 100B further includes the frame 8 that holds the device main body 111 including the panel unit 110 and the optical sheet 5 .
  • the frame 8 includes a frame body portion 812 , first leg portions 813 , and second leg portions 811 that extend vertically.
  • the frame 8 can hold the device main body 111 . Therefore, a transparent adhesive layer for adhering the plurality of light control panels 1 is not required. Thereby, the transparency of the light 621 in the panel unit 110 is increased, and the cost can be reduced.
  • the antireflection film 51 is adhered to each light control panel 1, the light 621 traveling toward the Z2 side (upper side) in the panel unit 110 is directed to the Z1 side (lower side). is suppressed, and the amount of light 621 emitted from the Z2 side (upper side) increases.
  • the first terminal 101, the second terminal 102, the third terminal 103, and the third terminal included in the first terminal group 10 are connected.
  • the four terminals 104 (terminals) and the fifth terminal 201, sixth terminal 202, seventh terminal 203, and eighth terminal 204 (terminals) included in the second terminal group 20 are electrically connected.
  • the array substrate 2 includes a first side 211 and a second side 212 that intersects with the first side 211, and has an octagonal (polygon having four or more sides) shape.
  • the terminal group is provided at the end along the first side 211 of the array substrate 2, at the first end 21 on the second side 212 side of the center of the first side 211, and at the end along the second side 212. , and the second end portion 22 provided on the side of the first side 211 with respect to the center of the second side 212 .
  • the first terminal group 10 is provided at the first end portion 21 and the second terminal group 20 is provided at the second end portion 22 .
  • the first terminal group 10 or the second terminal group 20 to which the flexible printed circuit board 400 is connected can be connected by a simple operation of rotating the light control panels 1A, 1B, 1C, and 1D having the same structure. It can be arranged on the Y1 side or the Y2 side.
  • the wiring (first wiring) 241 and the wiring (fourth wiring) 249, 251 of each array substrate 2 are electrically connected to the wiring of the opposing substrate 3 stacked on the array substrate 2 via conductive columns. . Therefore, it is possible to electrically connect the wiring of the array substrate 2 and the wiring of the counter substrate 3 with a simple structure.
  • the thickness of the adhesive layer is preferably 50 ⁇ m to 500 ⁇ m, more preferably 100 ⁇ m to 250 ⁇ m, from the viewpoint of preventing scattering of fragments when dropped.
  • the polarizing plate is adhered to the liquid crystal panel through an adhesive layer. It is sufficiently larger than the adhesive layer in the display panel.
  • the thickness of each adhesive layer is appropriately changed. More specifically, as shown in FIG. 8, in the second adhesive layer 72, when viewed in the thickness direction (first direction), the inner portion is made thinner than the outer portion. Aspects can be employed. In other words, when viewed from the Z direction, for example, the thickness of the second adhesive layer 72 provided at the portion where the opposing substrate 3 of the light control panel 1C and the array substrate 2 of the light control panel 1B overlap is the same as the outside (thickness It is thinner than the thickness of the second adhesive layer 72 provided on the direction outside). Alternatively, as shown in FIG.
  • the second adhesive layer 72 it is also possible to employ a configuration in which the inner second adhesive layer 72 is thicker than the outer second adhesive layer 72. .
  • the thickness of the second adhesive layer 72 provided at the portion where the opposing substrate 3 of the light control panel 1C and the array substrate 2 of the light control panel 1B overlap is the same as the outside (thickness It is thicker than the thickness of the second adhesive layer 72 provided on the direction outside).
  • the thickness of the adhesive layer is gradually increased from the light source 620 side toward the light output side (see FIG. 10).
  • the adhesive layer may impart electrical conductivity only to the adhesive layer located on the outermost side in the thickness direction, or a configuration in which electrical conductivity is imparted to all the adhesive layers may be adopted.
  • FIG. 11 it is also possible to employ a configuration in which the conductive adhesive layer is connected to a wiring or the like having a GND potential. Static electricity from the outside can be suppressed from entering the conductive layer of the light control panel.
  • Light control panel 11 First side 12 Second side 13 Third side 14 Fourth side 15 Fifth side 16 Sixth side 17 Seventh side 18 Eighth side 1A Light control panel (first light control panel) 1B light control panel (fourth light control panel) 1C light control panel (third light control panel) 1D light control panel (second light control panel) 2 Array substrate (first substrate) 2a front surface 2b back surface 2c end 2d end 2e end 3 counter substrate (second substrate) 3a front surface 3b rear surface 3c, 3d edge 4 liquid crystal layer 10 first terminal group 20 second terminal group 21 first end 22 second end 211 first side 212 second side 213 third side 214 fourth side 215 5th side 216 6th side 217 7th side 218 8th side 311 1st side 312 2nd side 313 3rd side 314 4th side 315 5th side 316 6th side 317 7th side 318 8th side 100, 100A , 100B, 100C Light control device 101 First terminal 102 Second terminal 103 Third terminal 104 Fourth terminal 105 Short side 106 Long side

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)
PCT/JP2022/042767 2021-12-02 2022-11-17 調光装置およびパネルユニット Ceased WO2023100677A1 (ja)

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US18/672,387 US20240319528A1 (en) 2021-12-02 2024-05-23 Light adjustment device and panel unit

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JP2019032491A (ja) * 2017-08-09 2019-02-28 株式会社ジャパンディスプレイ 表示装置及び車両のルームミラー
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JP2001042353A (ja) * 1999-08-04 2001-02-16 Minolta Co Ltd 積層型液晶表示装置及びその製造方法
JP2007265813A (ja) * 2006-03-28 2007-10-11 Matsushita Electric Works Ltd 照明器具
WO2008111214A1 (ja) * 2007-03-15 2008-09-18 Fujitsu Limited 表示パネル、積層型表示素子及びその製造方法
US8599353B2 (en) * 2010-05-28 2013-12-03 3M Innovative Properties Company Display comprising a plurality of substrates and a plurality of display materials disposed between the plurality of substrates that are connected to a plurality of non-overlapping integral conductive tabs
JP2019207420A (ja) * 2017-06-26 2019-12-05 大日本印刷株式会社 調光部材、サンバイザ及び移動体
JP2019032410A (ja) * 2017-08-07 2019-02-28 株式会社ジャパンディスプレイ 表示装置
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JP2020024341A (ja) * 2018-08-08 2020-02-13 大日本印刷株式会社 調光セルおよびその製造方法、ならびに調光装置およびその製造方法
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