CN112083591A - Display device - Google Patents
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- Publication number
- CN112083591A CN112083591A CN201910513575.6A CN201910513575A CN112083591A CN 112083591 A CN112083591 A CN 112083591A CN 201910513575 A CN201910513575 A CN 201910513575A CN 112083591 A CN112083591 A CN 112083591A
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- China
- Prior art keywords
- display device
- transparent conductive
- conductive layer
- substrate
- chromaticity
- Prior art date
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- Pending
Links
- 239000000758 substrate Substances 0.000 claims abstract description 18
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 10
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 abstract description 10
- 239000010410 layer Substances 0.000 description 39
- 230000003667 anti-reflective effect Effects 0.000 description 10
- 230000003666 anti-fingerprint Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 4
- 239000004926 polymethyl methacrylate Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 229920002284 Cellulose triacetate Polymers 0.000 description 2
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 230000003669 anti-smudge Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 229920012266 Poly(ether sulfone) PES Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- NPNMHHNXCILFEF-UHFFFAOYSA-N [F].[Sn]=O Chemical compound [F].[Sn]=O NPNMHHNXCILFEF-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000006117 anti-reflective coating Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/16—Optical coatings produced by application to, or surface treatment of, optical elements having an anti-static effect, e.g. electrically conducting coatings
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
Abstract
The invention discloses a display device which is provided with a first substrate, a liquid crystal layer, a second substrate, a transparent conducting layer and an anti-reflection protection plate. The liquid crystal layer is arranged on the first substrate, the second substrate is arranged on the liquid crystal layer, and the transparent conducting layer is arranged on the second substrate. The reflection chromaticity of the transparent conductive layer was (a1, b 1) in the CIELAB color space at the planar color coordinates, and the reflection chromaticity of the antireflection protective plate was (a2, b 2) in the CIELAB color space at the planar color coordinates. The thickness of the transparent conductive layer is within a certain range, so that a1 and a2 have positive and negative signs or b1 and b2 have positive and negative signs. The display device of the invention can solve the color cast condition of the display device containing the anti-reflection protection plate.
Description
Technical Field
The invention relates to a display device capable of solving color cast caused by a protective cover plate.
Background
Some display devices are provided with protective covers (cover lenses), which may have one or more coatings to provide Anti-reflection (AR), Anti-glare (AG), Anti-fingerprint (AF) or Anti-pollution functions. However, this may cause the protective cover plate to cause color shift of the display device, which is a concern to those skilled in the art.
Disclosure of Invention
The invention aims to provide a display device, which can solve the problem of color cast of the display device comprising an anti-reflection protection plate.
An embodiment of the present invention provides a display device, including: the liquid crystal display device comprises a first substrate, a liquid crystal layer, a second substrate, a transparent conducting layer and an anti-reflection protection plate. The liquid crystal layer is arranged on the first substrate, the second substrate is arranged on the liquid crystal layer, and the transparent conducting layer is arranged on the second substrate. The reflection chromaticity of the transparent conductive layer was (a1, b 1) in the CIELAB color space at the planar color coordinates, and the reflection chromaticity of the antireflection protective plate was (a2, b 2) in the CIELAB color space at the planar color coordinates. The thickness of the transparent conductive layer is within a certain range, so that a1 and a2 have positive and negative signs or b1 and b2 have positive and negative signs.
In some embodiments, the value of b1 is greater than 0.
In some embodiments, the transparent conductive layer has a thickness between 700 angstroms and 1200 angstroms.
In some embodiments, the transparent conductive layer is substantially 1000 angstroms thick.
In some embodiments, the value of b2 is less than-3.
In some embodiments, the display device has a reflection chromaticity with planar color coordinates (a3, b 3) in CIELAB chromaticity space, and b3 is greater than-10.
In some embodiments, the transparent conductive layer comprises indium tin oxide.
In some embodiments, the transparent conductive layer has a refractive index between 1.8 and 2.08.
In some embodiments, the reflectance of the display device as a whole is less than 5%.
In some embodiments, the value of a1 is greater than 0, and the value of a2 is less than 0.
In the above display device, the color shift problem of the display device can be improved by adjusting the thickness of the transparent conductive layer.
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic cross-sectional view illustrating a display device according to an embodiment.
FIG. 2 is a schematic diagram illustrating planar color coordinates according to one embodiment.
Detailed Description
As used herein, "first," "second," …, etc., do not denote any order or sequence, but rather are used to distinguish one element or operation from another element or operation described in the same technical language.
Fig. 1 is a schematic cross-sectional view illustrating a display device according to an embodiment. Referring to fig. 1, a display device 100 includes a polarizer 101, a first substrate 102, a liquid crystal layer 103, a second substrate 104, a transparent conductive layer 105, a polarizer 106, an adhesive layer 107, and an anti-reflection protection plate 108. However, fig. 1 only shows some components of the display device 100, and the display device 100 may further include an alignment film, a color filter, a black matrix, a thin film transistor, a common electrode and/or a pixel electrode, and the like, which are not limited herein.
Examples of the material of the first substrate 102 and the second substrate 104 include glass, polyethylene terephthalate (PET), Polycarbonate (PC), Polyethersulfone (PES), triacetyl cellulose (TAC), polymethyl methacrylate (PMMA), polyethylene (pe), cycloolefin polymer (COP), Polyimide (PI), and a composite material of Polycarbonate (PC) and polymethyl methacrylate (PMMA), and the like, but the present invention is not limited thereto.
The material of the transparent conductive layer 105 may include Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), tin (ATO), Fluorine Tin Oxide (FTO), and the like. In some embodiments, the refractive index of transparent conductive layer 105 is between 1.8 and 2.08. The adhesive layer 107 is, for example, an Optical Clear Adhesive (OCA), a letter-of-mouth glue, etc., and the invention is not limited thereto.
In some embodiments, the anti-reflective protection plate 108 is formed with one or more coatings on a protection cover plate to achieve anti-reflective function, and the material of the protection cover plate may include glass or plastic, but the invention is not limited to the above coating materials. By the anti-reflective coating, the reflectivity of the display device 100 as a whole is less than 5% in some embodiments. In some embodiments, the Anti-reflective protection plate 108 may also have a coating layer for Anti-glare (AG), Anti-fingerprint (AF), Anti-Smudge (AS), and the like, and the invention is not limited thereto.
The anti-reflective protective plate 108 is biased to a specific color, so that the display device 100 has color shift, which is compensated by adjusting the thickness of the transparent conductive layer 105 in this embodiment. Here, a color is represented by a CIELAB color space, and thus, a color has three values L, a, and b, and since the value L represents luminance (does not affect color shift), only the values a and b (collectively referred to as chromaticity) will be discussed below, and a coordinate system formed by the two values a and b will be referred to as planar color coordinates. For example, referring to fig. 2, fig. 2 is a schematic diagram illustrating plane color coordinates according to an embodiment. In some embodiments, the color coordinates of the transparent conductive layer 105 in the CIELAB color space are (a1, b 1), and the color coordinates of the anti-reflective protective plate 108 in the CIELAB color space are (a2, b 2), wherein a1 and a2 have opposite signs and/or b1 and b2 have opposite signs. In other words, the product of a1 and a2 is less than 0, and the product of b1 and b2 is less than 0, both of which can be true at the same time or only one of which can be true, so that the transparent conductive layer 105 can compensate the color shift of the anti-reflective protection plate 108. For example, the reflection chromaticity of the antireflection protective plate 108 at the coordinate point 201 is (11.27, -24.15) for values a2 and b2, respectively, and the reflection chromaticity of the transparent conductive layer 105 at a specific thickness at the coordinate point 202 is (3.12,17.2) for values a1 and b1, respectively. Since the coordinate point 201 is below the origin, the anti-reflective protection plate 108 is biased to blue, the coordinate point 202 is above the origin, and the transparent conductive layer 105 is biased to yellow, and the blue color bias of the display device 100 caused by the anti-reflective protection plate 108 can be solved by matching the transparent conductive layer 105 with the reflective chromaticity at the coordinate point 202 with the anti-reflective protection plate 108 with the reflective chromaticity at the coordinate point 201. In some embodiments, after attaching the antireflection protective plate 108, the reflection chromaticity of the display device 100 has planar color coordinates (a3, b 3) in the CIELAB chromaticity space, and the value b3 is greater than-10.
In fig. 2, trace 210 is drawn by adjusting the thickness of transparent conductive layer 105 and measuring the chromaticity of the reflection. For example, a coordinate point 203 represents a reflectance chromaticity when the thickness of the transparent conductive layer 105 is 300 angstroms (angstrom), and a coordinate point 204 represents a reflectance chromaticity when the thickness of the transparent conductive layer 105 is 1400 angstroms. In some embodiments, the thickness and the reflection chromaticity of the transparent conductive layer 105 are shown in table 1 below.
TABLE 1
Therefore, no matter what the reflection chromaticity of the anti-reflection protection plate 108 is, an appropriate coordinate point can be found on the locus 210 by adjusting the thickness of the transparent conductive layer 105 to compensate for the color shift. For example, if the reflective chromaticity of the antireflection protective plate 108 is in the second quadrant (i.e., a2 × 0 and b2 × 0), the reflective chromaticity of the transparent conductive layer 105 may be set to be in the fourth quadrant (i.e., a1 × 0 and b1 × 0); or when the reflective chromaticity of the antireflection protection plate 108 is in the third quadrant (i.e., a2 × 0 and b2 × 0), the reflective chromaticity of the transparent conductive layer 105 can be set to be in the first quadrant (i.e., a1 × 0 and b1 × 0), and so on. In some embodiments, the reflective chromaticity (a2, b 2) of the antireflective protection plate 108 is to the left of the straight line a 0, and the reflective chromaticity (a1, b 1) of the transparent conductive layer 105 is to the right of the straight line a 0. In some embodiments, the reflective chromaticity (a2, b 2) of the antireflection protection plate 108 is on the lower side of the straight line b 0, and the reflective chromaticity (a1, b 1) of the transparent conductive layer 105 is on the upper side of the straight line b 0.
In the embodiment of fig. 2, the thickness of the transparent conductive layer 105 can be within a certain range to compensate for color shift. Referring to table 1, since the reflection chromaticity of the general antireflection protection plate 108 is below the straight line b ═ 0, for example, b2 ≦ 3, the preferred thickness of the transparent conductive layer 105 can be adjusted to be between 700 a and 1200 a, and then b1 ≧ 0. In some embodiments, the thickness of the transparent conductive layer 105 is substantially 1000 angstroms (within 5% error).
In some embodiments, the transparent conductive layer 105 can be used to provide a touch function, and the transparent conductive layer 105 has a plurality of touch electrodes, which can have any pattern, including a transmitting electrode and a receiving electrode. In some embodiments, the transmitting electrode and the receiving electrode may be formed on the same layer (i.e., formed by the same deposition process), and the transmitting electrode (or the receiving electrode) is electrically connected to each other by bridging, but the transmitting electrode and the receiving electrode are not electrically connected to each other. In some embodiments, the transmitting electrode and the receiving electrode may be formed in different layers, and an insulating layer may be disposed between the transmitting electrode and the receiving electrode, which is not limited herein.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. A display device, comprising:
a first substrate;
a liquid crystal layer disposed on the first substrate;
a second substrate disposed over the liquid crystal layer;
a transparent conductive layer disposed on the second substrate, wherein a reflection chromaticity of the transparent conductive layer has a planar color coordinate of (a1, b 1) in a CIELAB color space; and
an antireflection protection plate disposed on the transparent conductive layer, wherein a reflection chromaticity of the antireflection protection plate is (a2, b 2) in a planar color coordinate of a CIELAB color space;
the thickness of the transparent conducting layer is within a certain range, so that a1 and a2 have positive and negative signs or b1 and b2 have positive and negative signs.
2. The display device of claim 1, wherein the value of b1 is greater than 0.
3. The display device according to claim 1, wherein the transparent conductive layer has a thickness of between 700 and 1200 angstroms.
4. The display device according to claim 1, wherein the transparent conductive layer has a thickness of substantially 1000 angstroms.
5. The display device of claim 1, wherein the value of b2 is less than-3.
6. The display device of claim 1, wherein the display device has a reflection chromaticity with planar color coordinates (a3, b 3) in CIELAB chromaticity space, and the b3 value is greater than-10.
7. The display device of claim 1, wherein the transparent conductive layer comprises indium tin oxide.
8. The display device according to claim 1, wherein the transparent conductive layer has a refractive index of 1.8 to 2.08.
9. The display device according to claim 1, wherein a reflectance of the display device as a whole is less than 5%.
10. The display device of claim 1, wherein the a1 value is greater than 0 and the a2 value is less than 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910513575.6A CN112083591A (en) | 2019-06-14 | 2019-06-14 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910513575.6A CN112083591A (en) | 2019-06-14 | 2019-06-14 | Display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112083591A true CN112083591A (en) | 2020-12-15 |
Family
ID=73733790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910513575.6A Pending CN112083591A (en) | 2019-06-14 | 2019-06-14 | Display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112083591A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005077860A (en) * | 2003-09-01 | 2005-03-24 | Fuji Photo Film Co Ltd | Anti-reflection film, polarizing plate, and image display device using same |
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| CN101484309A (en) * | 2006-05-09 | 2009-07-15 | Ppg工业俄亥俄公司 | Aesthetic transparency |
| US20110070453A1 (en) * | 2009-09-21 | 2011-03-24 | Mai Chien-Chin | Laminate of transparent conductive film |
| CN102012577A (en) * | 2009-09-07 | 2011-04-13 | 迎辉科技股份有限公司 | Membrane with uniform chroma |
| CN102194540A (en) * | 2010-03-11 | 2011-09-21 | 联享光电股份有限公司 | Transparent conductive lamination with reflected light adjusting layers |
| TW201305665A (en) * | 2011-07-26 | 2013-02-01 | Shih Hua Technology Ltd | Display screen and display device |
| CN103753897A (en) * | 2014-01-13 | 2014-04-30 | 福耀玻璃工业集团股份有限公司 | Wide-angle broadband anti-reflection coated glass |
| CN104749830A (en) * | 2013-12-27 | 2015-07-01 | 介面光电股份有限公司 | Electrode structure and touch panel device with electrode structure |
| CN106354305A (en) * | 2016-08-25 | 2017-01-25 | 京东方科技集团股份有限公司 | Touch display module, preparing method and display device thereof |
| CN109387966A (en) * | 2017-08-14 | 2019-02-26 | 株式会社凸版巴川光学薄膜 | Transparent conductive film, the touch panel including the transparent conductive film |
-
2019
- 2019-06-14 CN CN201910513575.6A patent/CN112083591A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005077860A (en) * | 2003-09-01 | 2005-03-24 | Fuji Photo Film Co Ltd | Anti-reflection film, polarizing plate, and image display device using same |
| US20070236631A1 (en) * | 2004-07-12 | 2007-10-11 | Fuji Photo Film Co., Ltd. | Antireflection Film, Polarizing Plate, and Image Display Device Using the Same |
| CN101484309A (en) * | 2006-05-09 | 2009-07-15 | Ppg工业俄亥俄公司 | Aesthetic transparency |
| CN102012577A (en) * | 2009-09-07 | 2011-04-13 | 迎辉科技股份有限公司 | Membrane with uniform chroma |
| US20110070453A1 (en) * | 2009-09-21 | 2011-03-24 | Mai Chien-Chin | Laminate of transparent conductive film |
| CN102194540A (en) * | 2010-03-11 | 2011-09-21 | 联享光电股份有限公司 | Transparent conductive lamination with reflected light adjusting layers |
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