CN109343268B - Color filter substrate, liquid crystal display panel and liquid crystal display device - Google Patents
Color filter substrate, liquid crystal display panel and liquid crystal display device Download PDFInfo
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- CN109343268B CN109343268B CN201811574572.5A CN201811574572A CN109343268B CN 109343268 B CN109343268 B CN 109343268B CN 201811574572 A CN201811574572 A CN 201811574572A CN 109343268 B CN109343268 B CN 109343268B
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- 239000000758 substrate Substances 0.000 title claims abstract description 43
- 239000004973 liquid crystal related substance Substances 0.000 title claims description 21
- 239000010410 layer Substances 0.000 claims abstract description 102
- 239000012044 organic layer Substances 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 27
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 claims description 3
- 229910001635 magnesium fluoride Inorganic materials 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 230000035515 penetration Effects 0.000 abstract description 5
- 238000002310 reflectometry Methods 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 abstract 1
- 238000002834 transmittance Methods 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 238000000149 argon plasma sintering Methods 0.000 description 3
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 239000002346 layers by function Substances 0.000 description 1
- 230000003287 optical effect Effects 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133502—Antiglare, refractive index matching layers
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Filters (AREA)
Abstract
The invention provides a color filtering substrate, which comprises a substrate, a first organic layer, a color resistance layer, a transparent film layer, a second organic layer and a conducting layer, wherein the substrate, the first organic layer, the color resistance layer, the transparent film layer, the second organic layer and the conducting layer are sequentially arranged; the transparent film layer is provided with holes. The invention provides a color filter substrate, which is characterized in that a transparent film layer with a porous microstructure is arranged on the upper surface of an RGB color resistance layer, the refractive index of the transparent film layer is matched with the refractive indexes of an organic layer and the color resistance layer by selecting a proper material of the transparent film layer, so that the equivalent refractive index of small-angle incident light passing through the transparent film layer is matched with the refractive index of the color resistance layer, the reflectivity of the color filter substrate is lower, the equivalent refractive index of large-angle incident light is smaller, and large-angle scattered light is inhibited through a total reflection effect, so that the contrast and the penetration rate of a display panel are improved.
Description
Technical Field
The invention relates to the technical field of display panels, in particular to a color filter substrate, a liquid crystal display panel and a liquid crystal display device.
Background
The liquid crystal display panel generally includes an array substrate, a color filter substrate, and a liquid crystal layer disposed between the array substrate and the color filter substrate. The color filter substrate comprises an RGB color resistance layer, the RGB color filter layer is a key optical functional layer of the LCD display and is used for selectively allowing red light, green light or blue light to penetrate, and therefore the LCD display can display color pictures by controlling R, G, B the respective transmittance of the sub-pixels.
As shown in fig. 1, fig. 1 is a schematic cross-sectional view of a color filter substrate in the prior art, and the color filter layer has a relatively obvious light scattering effect due to the relatively large molecular weight of Pigment (Pigment) molecules or Dye (Dye) molecules playing a color development role in the RGB color resist layer. The light-on light composed of the liquid crystal and the polarizer has a high dark state transmittance to the large-angle scattered light, so that the dark state brightness is increased by the light scattering effect of the color resistance, thereby reducing the display contrast. On the other hand, the refractive index of the organic layer for protecting the upper and lower surfaces of the color resist layer is not completely matched with that of the color resist layer, so that the color resist layer also has a certain light reflection loss. The RGB color-resist layer has some light scattering and light reflection losses, which affect the performance parameters such as transmittance and contrast of the LCD display.
Therefore, there is a need to develop a new color filter substrate to overcome the drawbacks of the prior art.
The background section is only provided to assist in understanding the present disclosure, and thus the disclosure in the background section may include some prior art that does not constitute a part of the knowledge of one skilled in the art, and the disclosure in the background section does not represent that matter or the problem to be solved by one or more embodiments of the present invention, nor is it intended to be known or appreciated by one skilled in the art prior to the present application.
Disclosure of Invention
An object of the present invention is to provide a color filter substrate, which can solve the problems of low contrast, low transmittance, etc. in the prior art.
In order to achieve the above object, the present invention provides a color filter substrate, which comprises a substrate, a first organic layer, a color resistance layer, a transparent film layer, a second organic layer and a conductive layer, which are sequentially disposed; the transparent film layer is provided with holes.
The arrangement mode enables the equivalent refractive index of small-angle incident light passing through the transparent film layer to be matched with the refractive index of the color resistance layer, meanwhile, the equivalent refractive index of large-angle incident light is small, and large-angle scattered light is restrained through a total reflection effect, so that the contrast and the penetration rate of the display panel are improved.
Further, in other embodiments, the shape, the number and the arrangement manner of the holes may be determined as needed, and are not limited, as long as the equivalent refractive index of the small-angle incident light passing through the transparent film layer can be matched with the refractive index of the color resist layer, and the equivalent refractive index of the large-angle incident light is smaller.
Further, in other embodiments, the total space occupied by the holes is 10% to 90% of the space of the transparent film layer. In other embodiments, the space occupied by the holes may be determined as needed, and is not limited, as long as the equivalent refractive index of the small-angle incident light passing through the transparent film layer can be matched with the refractive index of the color resistance layer, and the equivalent refractive index of the large-angle incident light is smaller.
Further, in other embodiments, the transparent film layer is made of a material having a refractive index ranging from 1.6 to 2.5, the holes are filled with a first material having a refractive index ranging from 1 to 1.6.
Further, in other embodiments, the material used for the transparent film layer includes silicon oxide.
Further, in other embodiments, wherein the first material comprises magnesium fluoride.
Further, in other embodiments, the refractive index of the material used for the transparent film layer is greater than the refractive index of the color resistance layer.
Further, in other embodiments, the refractive index of the first material is less than the refractive index of the color resist layer. In other embodiments, the holes may not be filled with any material, as long as the equivalent refractive index of the small-angle incident light passing through the transparent film layer can be ensured to match the refractive index of the color resist layer, and the equivalent refractive index of the large-angle incident light is also ensured to be smaller.
Further, in other embodiments, the material of the first organic layer and the second organic layer includes silicon nitride.
Further, in other embodiments, wherein the refractive index of the first organic layer and the second organic layer is equal to the refractive index of the color resist layer.
The arrangement mode can enable the reflectivity of small-angle incident light to be low, and therefore the penetration rate of the display is improved.
Further, in other embodiments, the refractive index of the transparent film layer is equal to the refractive index of the color resistance layer.
Further, in other embodiments, the refractive index of the transparent film layer is equal to the refractive index of the first organic layer and the second organic layer.
Further, in other embodiments, the material of the conductive layer comprises indium tin oxide. The material of the conductive layer may further include indium zinc oxide and indium gallium zinc oxide, and in other embodiments, the material of the conductive layer may be determined as needed, and is not limited.
Still another object of the present invention is to provide a liquid crystal display panel, which includes an array substrate, on which the color filter substrate according to the present invention and a liquid crystal layer disposed on the color filter substrate are disposed.
Based on the same inventive concept, the invention also provides a liquid crystal display device, which comprises a body, wherein the liquid crystal display panel is arranged on the body.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a color filter substrate, which is characterized in that a transparent film layer with a porous microstructure is arranged on the upper surface of an RGB color resistance layer, the refractive index of the transparent film layer is matched with the refractive indexes of an organic layer and the color resistance layer by selecting a proper material of the transparent film layer, so that the equivalent refractive index of small-angle incident light passing through the transparent film layer is matched with the refractive index of the color resistance layer, the reflectivity of the color filter substrate is lower, the equivalent refractive index of large-angle incident light is smaller, and large-angle scattered light is inhibited through a total reflection effect, so that the contrast and the penetration rate of a display panel are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of a color filter substrate in the prior art;
fig. 2 is a schematic cross-sectional view of a color filter substrate according to embodiment 1 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Specific structural and functional details disclosed herein are merely representative and are provided for purposes of describing example embodiments of the present invention. The present invention may, however, be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Example 1
Referring to fig. 2, the present invention provides a color filter substrate, which includes a substrate 1, a first organic layer 2, a color-resist layer 3, a transparent film layer 6, a second organic layer 4 and a conductive layer 5. The first organic layer 2 is arranged on the substrate, the color resistance layer 3 is arranged on the first organic layer 2, the transparent film layer 6 is arranged on the color resistance layer 3, the second organic layer 4 is arranged on the transparent film layer 6, and the conducting layer 5 is arranged on the second organic layer 4.
The material of the first organic layer 2 and the second organic layer 4 includes silicon nitride. In other embodiments, the material of the first organic layer 2 and the second organic layer 4 may be determined according to the requirement, and is not limited.
The upper and lower surfaces of the color resist layer 3 are provided with a first organic layer 2 and a second organic layer 4, respectively, in such a manner as to protect the color resist layer 3.
In a specific implementation, the conductive layer 5 may be made of Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), Indium Gallium Zinc Oxide (IGZO), or the like, and is not limited herein.
The transparent film layer 6 is provided with a hole 7. The refractive index of the color resistance layer 3 is 1.6, the refractive index range of the material adopted by the transparent film layer 6 is 1.6-2.5, the hole 7 is filled with the first material, and the refractive index range of the first material is 1-1.6. In this embodiment, the transparent film layer 6 is made of silicon oxide, and the first material filled in the holes 7 is made of magnesium fluoride. Such a mode of setting up can make the equivalent refractive index of the small-angle incident light through transparent rete and the refractive index phase-match of look resistance layer 3, makes the equivalent refractive index of big angle incident light less simultaneously, suppresses big angle scattering light through total reflection effect to improve display panel's contrast and transmissivity.
In other embodiments, the holes may not be filled with any material, as long as it is ensured that the equivalent refractive index of the small-angle incident light passing through the transparent film layer matches the refractive index of the color resistance layer 3, and the equivalent refractive index of the large-angle incident light is smaller.
The refractive index of the first organic layer 2 and the second organic layer 4 is equal to that of the color resistance layer 3, so that the reflectivity of small-angle incident light is low, and the transmittance of the display is improved.
In other embodiments, the refractive index of the transparent film layer 6 is equal to the refractive index of the color-resist layer 3.
In other embodiments, wherein the refractive index of the transparent film layer 6 is equal to the refractive index of the first organic layer 2 and the second organic layer 3.
In other embodiments, the shape, the number and the arrangement manner of the holes may be determined as required, and are not limited, as long as the equivalent refractive index of the small-angle incident light passing through the transparent film layer can be matched with the refractive index of the color resistance layer, and the equivalent refractive index of the large-angle incident light is smaller.
In other embodiments, the total space occupied by the holes is 10% to 90% of the space of the transparent film layer. In other embodiments, the space occupied by the first via holes may be determined as needed, and is not limited, as long as the equivalent refractive index of the small-angle incident light passing through the transparent film layer can be matched with the refractive index of the color resistance layer 3, and the equivalent refractive index of the large-angle incident light is smaller.
Example 2
Still another object of the present invention is to provide a liquid crystal display panel, which includes an array substrate, on which the color filter substrate according to the present invention and a liquid crystal layer disposed on the color filter substrate are disposed.
Example 3
Based on the same inventive concept, the invention also provides a liquid crystal display device, which comprises a body, wherein the liquid crystal display panel is arranged on the body.
The invention has the beneficial effects that: the invention provides a color filter substrate, which is characterized in that a transparent film layer with a porous microstructure is arranged on the upper surface of an RGB color resistance layer, the refractive index of the transparent film layer is matched with the refractive indexes of an organic layer and the color resistance layer by selecting a proper material of the transparent film layer, so that the equivalent refractive index of small-angle incident light passing through the transparent film layer is matched with the refractive index of the color resistance layer, the reflectivity of the color filter substrate is lower, the equivalent refractive index of large-angle incident light is smaller, and large-angle scattered light is inhibited through a total reflection effect, so that the contrast and the penetration rate of a display panel are improved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A color filter substrate is characterized by comprising a substrate, a first organic layer, a color resistance layer, a transparent film layer, a second organic layer and a conducting layer which are sequentially arranged; the transparent film layer is provided with holes; the refractive index of the color resistance layer is 1.6, the refractive index range of the transparent film layer is 1.6-2.5, the holes are filled with a first material, and the refractive index range of the first material is 1-1.6; the refractive index of the transparent film layer is larger than that of the color resistance layer, and the refractive index of the first material is smaller than that of the color resistance layer.
2. The color filter substrate according to claim 1, wherein the holes comprise 2 or more.
3. The color filter substrate according to claim 2, wherein the total space occupied by the holes is 10% to 90% of the space of the transparent film.
4. The color filter substrate as claimed in claim 1, wherein the transparent film layer is made of a material including silicon oxide.
5. The color filter substrate of claim 1, wherein the first material comprises magnesium fluoride.
6. The color filter substrate according to claim 1, wherein the material of the first organic layer and the second organic layer comprises silicon nitride.
7. A liquid crystal display panel comprising an array substrate on which the color filter substrate of any one of claims 1 to 6 is disposed and a liquid crystal layer disposed on the color filter substrate.
8. A liquid crystal display device comprising a body on which the liquid crystal display panel according to claim 7 is provided.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811574572.5A CN109343268B (en) | 2018-12-21 | 2018-12-21 | Color filter substrate, liquid crystal display panel and liquid crystal display device |
| PCT/CN2019/071617 WO2020124714A1 (en) | 2018-12-21 | 2019-01-14 | Color filter substrate, liquid crystal display panel and liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811574572.5A CN109343268B (en) | 2018-12-21 | 2018-12-21 | Color filter substrate, liquid crystal display panel and liquid crystal display device |
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| CN109343268A CN109343268A (en) | 2019-02-15 |
| CN109343268B true CN109343268B (en) | 2020-06-30 |
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| CN110579919B (en) * | 2019-08-08 | 2020-12-04 | 深圳市华星光电技术有限公司 | Array substrate and liquid crystal panel |
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| CN103576377A (en) * | 2013-11-04 | 2014-02-12 | 京东方科技集团股份有限公司 | Color film substrate and display device provided with same |
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| CN109343268A (en) | 2019-02-15 |
| WO2020124714A1 (en) | 2020-06-25 |
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