WO2020107725A1 - 彩膜基板及液晶显示面板 - Google Patents

彩膜基板及液晶显示面板 Download PDF

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Publication number
WO2020107725A1
WO2020107725A1 PCT/CN2019/075649 CN2019075649W WO2020107725A1 WO 2020107725 A1 WO2020107725 A1 WO 2020107725A1 CN 2019075649 W CN2019075649 W CN 2019075649W WO 2020107725 A1 WO2020107725 A1 WO 2020107725A1
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Prior art keywords
photoresist
refractive index
black matrix
dielectric film
substrate
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PCT/CN2019/075649
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English (en)
French (fr)
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赵斌
林凡
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武汉华星光电技术有限公司
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Priority to US16/466,650 priority Critical patent/US11036075B2/en
Publication of WO2020107725A1 publication Critical patent/WO2020107725A1/zh

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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
    • G02F1/133502—Antiglare, refractive index matching layers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G02F1/133519—Overcoatings

Definitions

  • the invention relates to the field of display technology, in particular to a color film substrate and a liquid crystal display panel.
  • CTR Ray Tube
  • liquid crystal display devices which include a liquid crystal display panel and a backlight module.
  • the working principle of the LCD panel is based on the thin film transistor array substrate (Thin Film Transistor Array Substrate, TFT Array Substrate) and the color film (Color Filter, CF) liquid crystal molecules are poured between the substrates, and a driving voltage is applied to the two substrates to control the rotation direction of the liquid crystal molecules, so as to refract the light of the backlight module to generate a picture.
  • the existing liquid crystal display panel includes a color film substrate 100 and a TFT array substrate 200 oppositely arranged.
  • the color filter substrate 100 includes a substrate 110, a plurality of spaced photoresist blocks 120 disposed on the substrate 110 close to the TFT array substrate 200, and a substrate 110 disposed on the side close to the TFT array substrate 200 and located on the adjacent A black matrix (BM) 130 between the photoresist blocks 120 and a planarization layer (OC) 140 provided on the side of the photoresist block 120 and the black matrix 130 close to the TFT array substrate 200,
  • the plurality of photoresist blocks 120 include The red photoresist block 121, the green photoresist block 122 and the blue photoresist block 123 are provided, and the TFT array substrate 200 is provided with a plurality of pixel units 210 respectively corresponding to the plurality of photoresist blocks 120.
  • the pair of color filter substrate and TFT array substrate needs to make each photoresist block coincide with the corresponding pixel unit.
  • the TFT array substrate and color filter substrate it is impossible for the TFT array substrate and color filter substrate to completely overlap, as shown in Figure 1 It shows that the photoresist block 120 and the corresponding pixel unit 210 are partially offset, which will cause the problem of large-vision character deviation.
  • the backlight module When the user views the LCD panel at a 45-degree angle of view, the backlight module The emitted light passes through the pixel unit 210 corresponding to a red photoresist block 121 and most of it will enter the red photoresist block 121, but a small part will enter the green photoresist block 122 adjacent to the red photoresist block 121 , So that the light that finally reaches the human eye includes most of the red light and a small part of the green light, and finally shows yellow light, causing a color shift problem of red to yellow.
  • An object of the present invention is to provide a color film substrate, which can solve the problem of large viewing angle deviation of the liquid crystal display panel while ensuring the transmittance of the liquid crystal display panel.
  • Another object of the present invention is to provide a liquid crystal display panel capable of solving the problem of large-vision character deviation while having a high transmittance.
  • the present invention first provides a color filter substrate, which includes a plurality of spaced photoresist blocks, a black matrix disposed between adjacent photoresist blocks, and a plurality of photoresist blocks and black matrices
  • a color filter substrate which includes a plurality of spaced photoresist blocks, a black matrix disposed between adjacent photoresist blocks, and a plurality of photoresist blocks and black matrices
  • the refractive index of the optically thin dielectric film is smaller than the refractive index of the planarization layer.
  • the refractive index of the planarization layer is 1.5-1.6.
  • the refractive index of the planarization layer is 1.55.
  • the plurality of photoresist blocks include a red photoresist block, a green photoresist block, and a blue photoresist block that are sequentially arranged.
  • the color filter substrate further includes a substrate; the plurality of photoresist blocks and the black matrix are provided on the same side of the substrate; and the photophobic dielectric film is provided on the side of the photoresist block and the black matrix away from the substrate.
  • the material of the substrate is glass or transparent flexible material.
  • the material of the black matrix is a black photoresist material.
  • the material of the planarization layer is a transparent photoresist material.
  • the invention also provides a color film substrate, which includes a plurality of spaced photoresist blocks, a black matrix disposed between adjacent photoresist blocks, a light sparse dielectric film disposed on the plurality of photoresist blocks and the black matrix And a planarization layer covering a plurality of photoresist blocks, a black matrix, and a light sparse dielectric film; the light sparse dielectric film covering the boundary between the plurality of photoresist blocks and the black matrix; further including a substrate; the plurality of photoresists The block and the black matrix are provided on the same side of the substrate; the light sparse dielectric film is provided on the side of the photoresist block and the black matrix away from the substrate;
  • the refractive index of the optically thin dielectric film is smaller than the refractive index of the planarization layer
  • the present invention also provides a liquid crystal display panel, including the above color filter substrate.
  • the color filter substrate of the present invention includes a plurality of spaced photoresist blocks, a black matrix disposed between adjacent photoresist blocks, and light dispersal disposed on the plurality of photoresist blocks and the black matrix Dielectric film and planarization layer covering multiple photoresist blocks, black matrix and optically thin dielectric film, the optically thin dielectric film covers the junction of the multiple photoresistive blocks and the black matrix, the refractive index of the optically thin dielectric film is less than the planarization layer
  • the color filter substrate and the TFT array substrate are used to form a liquid crystal display panel, when a large viewing angle is viewed, the light from a pixel unit entering the photoresist block adjacent to the photoresist block corresponding to the pixel unit will be in Total reflection occurs at the interface between the flattening layer and the light sparse dielectric film, thereby solving the problem of large visual role deviation without affecting the transmittance of the liquid crystal display panel.
  • FIG. 1 is a schematic structural diagram of an existing liquid crystal display panel
  • FIG. 2 is a schematic structural view of a color film substrate of the present invention
  • FIG. 3 is a schematic structural diagram of a liquid crystal display panel of the present invention.
  • the present invention provides a color film substrate, including a plurality of spaced photoresist blocks 10 , Located in the adjacent photoresist block 10 Black matrix 20 ⁇ Set in multiple photoresist blocks 10 Black matrix 20 Optical thin film 30 And covering multiple photoresist blocks 10 Black matrix 20 And optical thin film 30 Planarization layer 40 .
  • the optical thin film 30 Cover multiple photoresist blocks 10 With black matrix 20 Junction. It is important to note that the optical thin film 30 The refractive index is less than the planarization layer 40 The refractive index.
  • n For thin film 30
  • the refractive index, i Incident It is the preset critical angle of incidence.
  • planarization layer 40 The refractive index is 1.5-1.6 .
  • the planarization layer 40 The refractive index can be 1.55 .
  • multiple photoresist blocks 10 Including red photoresist blocks arranged in sequence 11 , Green photoresist block 12 And blue photoresist block 13 .
  • the color filter substrate further includes a substrate 50 .
  • the plurality of photoresist blocks 10 Black matrix 20 Substrate 10 On the same side.
  • the substrate 50 The material is glass or transparent flexible material.
  • the black matrix 20 The material is black photoresist.
  • planarization layer 40 The material is transparent photoresist.
  • the color filter substrate of the present invention has multiple photoresist blocks 10 Black matrix 20 Set light thinning dielectric film 30 , Optical thin film 30 Cover multiple photoresist blocks 10 With black matrix 20 At the junction of the 40 Cover photoresist block 10 Black matrix 20 And optical thin film 30 , And optical thin film 30
  • the refractive index is less than the planarization layer 40 Refractive index, so please refer to the figure 3 .
  • the color filter substrate of the present invention and TFT Array substrate 9 After pairing to form an LCD panel, even TFT Array substrate 9 There is an offset from the color filter substrate so that TFT Array substrate 9 Pixel unit 91 Photoresist block corresponding to color filter substrate 10 Does not completely overlap, when viewing the liquid crystal display panel through a large viewing angle, a pixel unit 91 Injection and the pixel unit 91 Corresponding photoresist block 10 Adjacent photoresist block 10 Of the light will be in the flattening layer 40 Dielectric film 30 Total reflection occurs at the interface of the 91 The emitted
  • the present invention also provides a liquid crystal display panel, including a color filter substrate 1 Substrate with color film 1 Relatively set TFT Array substrate 9 And set on the color film substrate 1 versus TFT Array substrate 9 Between the liquid crystal layer (not shown).
  • the color filter substrate 1 Including a plurality of spaced photoresist blocks 10 , Located in the adjacent photoresist block 10 Black matrix 20 ⁇ Set in multiple photoresist blocks 10 Black matrix 20 Optical thin film 30 And covering multiple photoresist blocks 10 Black matrix 20 And optical thin film 30 Planarization layer 40 .
  • the optical thin film 30 Cover multiple photoresist blocks 10 With black matrix 20 Junction. It is important to note that the optical thin film 30 The refractive index is less than the planarization layer 40 The refractive index.
  • n For thin film 30
  • the refractive index, i Incident It is the preset critical angle of incidence.
  • planarization layer 40 The refractive index is 1.5-1.6 .
  • the planarization layer 40 The refractive index can be 1.55 .
  • multiple photoresist blocks 10 Including red photoresist blocks arranged in sequence 11 , Green photoresist block 12 And blue photoresist block 13 .
  • the color filter substrate further includes a substrate 50 .
  • the plurality of photoresist blocks 10 Black matrix 20 Substrate 10 On the same side.
  • the substrate 50 The material is glass or transparent flexible material.
  • the black matrix 20 The material is black photoresist.
  • planarization layer 40 The material is transparent photoresist.
  • the TFT Array substrate 9 Including multiple pixel units arranged at intervals 91 , Each pixel unit 91 Substrate with color film 1 A photoresist block 10 Corresponding.
  • the TFT Array substrate 9 It also includes the adjacent pixel units 91 Array side shading area 92 .
  • the color filter substrate in the liquid crystal display panel of the present invention 1 In multiple photoresist blocks 10 Black matrix 20 Set light thinning dielectric film 30 , Optical thin film 30 Cover multiple photoresist blocks 10 With black matrix 20 At the junction of the 40 Cover photoresist block 10 Black matrix 20 And optical thin film 30 , And optical thin film 30
  • the refractive index is less than the planarization layer 40 The refractive index, so even if TFT Array substrate 9 Substrate with color film 1 There is an offset such that TFT Array substrate 9 Pixel unit 91 Substrate with color film 1
  • the corresponding photoresist block 10 Does not completely overlap, when viewing the liquid crystal display panel through a large viewing angle, a pixel unit 91 Injection and the pixel unit 91 Corresponding photoresist block 10 Adjacent photoresist block 10 Of the light will be in the flattening layer 40 Dielectric film 30 Total reflection occurs at the interface of the 91 The emitted light can only pass through the corresponding photoresist block
  • the color filter substrate of the present invention includes a plurality of spaced photoresist blocks, a black matrix disposed between adjacent photoresist blocks, and a light sparse medium disposed on the plurality of photoresist blocks and the black matrix Film and a planarization layer covering multiple photoresist blocks, black matrix, and optical thin film, the optical thin film covers the junction of the multiple photoresist blocks and the black matrix, and the refractive index of the optical thin film is less than that of the planarization layer Refractive index, using the color film substrate and TFT
  • the array substrates are paired to form a liquid crystal display panel, when viewed at a large angle of view, light from a pixel unit entering the photoresist block adjacent to the photoresist block corresponding to the pixel unit will be at the interface of the planarization layer and the optical thin film Total reflection occurs, thereby solving the problem of large-vision role deviation without affecting the transmittance of the liquid crystal display panel.
  • the liquid crystal display panel of the present invention can solve

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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)
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Abstract

提供一种彩膜基板及液晶显示面板。彩膜基板包括相间隔的多个光阻块（10）、设于相邻的光阻块（10）之间的黑色矩阵（20）、设于多个光阻块（10）及黑色矩阵（20）上的光疏介质膜（30）以及覆盖多个光阻块（10）、黑色矩阵（20）及光疏介质膜（30）的平坦化层（40），光疏介质膜（30）覆盖多个光阻块（10）与黑色矩阵（20）的交界处，光疏介质膜（30）的折射率小于平坦化层（40）的折射率。利用彩膜基板与TFT阵列基板（9）对组形成液晶显示面板后，大视角观看时，一像素单元（91）射入与像素单元（91）对应的光阻块（10）相邻的光阻块（10）的光线会在平坦化层（40）与光疏介质膜（30）的交界面发生全反射，从而在不影响液晶显示面板的穿透率的基础上解决了大视角色偏的问题。

Description

彩膜基板及液晶显示面板 技术领域
本发明涉及显示技术领域，尤其涉及一种彩膜基板及液晶显示面板。
 背景技术
随着显示技术的发展，液晶显示装置（Liquid Crystal Display，LCD）等平面显示装置因具有高画质、省电、机身薄及应用范围广等优点，已经逐步取代阴极射线管（Cathode Ray Tube，CRT）显示屏，被广泛的应用于手机、电视、个人数字助理、数字相机、笔记本电脑、台式计算机等各种消费性电子产品，成为显示装置中的主流。
现有市场上的液晶显示装置大部分为背光型液晶显示装置，其包括液晶显示面板及背光模组（backlight module）。液晶显示面板的工作原理是在薄膜晶体管阵列基板（Thin Film Transistor Array Substrate，TFT Array Substrate）与彩膜（Color Filter，CF）基板之间灌入液晶分子，并在两片基板上施加驱动电压来控制液晶分子的旋转方向，以将背光模组的光线折射出来产生画面。
请参阅图1，现有的液晶显示面板包括相对设置的彩膜基板100及TFT阵列基板200。所述彩膜基板100包括衬底110、设于衬底110靠近TFT阵列基板200一侧的多个间隔的光阻块120、设于衬底110靠近TFT阵列基板200一侧且位于相邻的光阻块120之间的黑色矩阵（BM）130以及设于光阻块120及黑色矩阵130靠近TFT阵列基板200一侧的平坦化层（OC）140，所述多个光阻块120包括依次设置的红色光阻块121、绿色光阻块122及蓝色光阻块123，而TFT阵列基板200设置有分别与多个光阻块120对应的多个像素单元210。理想状态下，彩膜基板与TFT阵列基板对组需要使得每一光阻块与对应的像素单元对位重合，然而实际生产当中，TFT阵列基板与彩膜基板不可能完全重合，例如图1所示，光阻块120与对应的像素单元210存在部分偏移，这样一来会产生大视角色偏的问题，举例来说，当使用者以45°的视角观看液晶显示面板时，背光模组发出的光线经与一红色光阻块121相对应的像素单元210后大部分会射入该红色光阻块121，但小部分会射入该红色光阻块121相邻的绿色光阻块122，使得最终到达人眼的光线包括大部分的红光及少部分的绿光，最终呈现黄光，产生红色偏黄的色偏问题。随着显示技术的不断发展，消费者对显示面板的穿透率的要求不断提高，而最常用的提升开口率的方法为减小彩膜基板中黑色矩阵的尺寸，而黑色矩阵尺寸越小，大视角色偏的现象越严重，现有技术中很难在保证液晶显示面板的高穿透率的同时解决其大视角色偏问题。
 技术问题
本发明的目的在于提供一种彩膜基板，能够在保证液晶显示面板的穿透率的同时解决液晶显示面板的大视角色偏问题。
本发明的另一目的在于提供一种液晶显示面板，能够在具有较高的穿透率的同时，解决大视角色偏问题。
 技术解决方案
为实现上述目的，本发明首先提供一种彩膜基板，包括相间隔的多个光阻块、设于相邻的光阻块之间的黑色矩阵、设于多个光阻块及黑色矩阵上的光疏介质膜以及覆盖多个光阻块、黑色矩阵及光疏介质膜的平坦化层；所述光疏介质膜覆盖多个光阻块与黑色矩阵的交界处；
所述光疏介质膜的折射率小于平坦化层的折射率。
所述光疏介质膜的折射率满足：n=n OC×sini 入射，其中，n为光疏介质膜的折射率，n OC为平坦化层的折射率，i 入射为预设的入射临界角。
所述平坦化层的折射率为1.5-1.6。
所述平坦化层的折射率为1.55。
多个光阻块包括依次设置的红色光阻块、绿色光阻块及蓝色光阻块。
所述彩膜基板还包括衬底；所述多个光阻块及黑色矩阵设于衬底的同一侧；光疏介质膜设于光阻块及黑色矩阵远离衬底的一侧。
所述衬底的材料为玻璃或透明柔性材料。
所述黑色矩阵的材料为黑色光阻材料。
所述平坦化层的材料为透明光阻材料。
本发明还提供一种彩膜基板，包括相间隔的多个光阻块、设于相邻的光阻块之间的黑色矩阵、设于多个光阻块及黑色矩阵上的光疏介质膜以及覆盖多个光阻块、黑色矩阵及光疏介质膜的平坦化层；所述光疏介质膜覆盖多个光阻块与黑色矩阵的交界处；还包括衬底；所述多个光阻块及黑色矩阵设于衬底的同一侧；光疏介质膜设于光阻块及黑色矩阵远离衬底的一侧；
所述光疏介质膜的折射率小于平坦化层的折射率；
所述光疏介质膜的折射率满足：n=n OC×sini 入射，其中，n为光疏介质膜的折射率，n OC为平坦化层的折射率，i 入射为预设的入射临界角。
本发明还提供一种液晶显示面板，包括上述的彩膜基板。
 有益效果
本发明的有益效果：本发明的彩膜基板包括相间隔的多个光阻块、设于相邻的光阻块之间的黑色矩阵、设于多个光阻块及黑色矩阵上的光疏介质膜以及覆盖多个光阻块、黑色矩阵及光疏介质膜的平坦化层，光疏介质膜覆盖多个光阻块与黑色矩阵的交界处，光疏介质膜的折射率小于平坦化层的折射率，利用该彩膜基板与TFT阵列基板对组形成液晶显示面板后，大视角观看时，一像素单元射入与该像素单元对应的光阻块相邻的光阻块的光线会在平坦化层与光疏介质膜的交界面发生全反射，从而在不影响液晶显示面板的穿透率的基础上解决了大视角色偏的问题。本发明的液晶显示面板，能够在具有较高的穿透率的同时，解决大视角色偏问题。
 附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为现有的液晶显示面板的结构示意图；
图2为本发明的彩膜基板的结构示意图；
图3为本发明的液晶显示面板的结构示意图。
 本发明的实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图 2 ，本发明提供一种彩膜基板，包括相间隔的多个光阻块 10 、设于相邻的光阻块 10 之间的黑色矩阵 20 、设于多个光阻块 10 及黑色矩阵 20 上的光疏介质膜 30 以及覆盖多个光阻块 10 、黑色矩阵 20 及光疏介质膜 30 的平坦化层 40 。所述光疏介质膜 30 覆盖多个光阻块 10 与黑色矩阵 20 的交界处。重点需要注意的是，所述光疏介质膜 30 的折射率小于平坦化层 40 的折射率。
具体地，所述光疏介质膜 30 的折射率满足： n=n OC × sini 入射 ，其中， n 为光疏介质膜 30 的折射率， n OC 为平坦化层 40 的折射率， i 入射 为预设的入射临界角。
具体地，所述平坦化层 40 的折射率为 1.5-1.6 。
优选地，所述平坦化层 40 的折射率可为 1.55 。
具体地，多个光阻块 10 包括依次设置的红色光阻块 11 、绿色光阻块 12 及蓝色光阻块 13 。
具体地，所述彩膜基板还包括衬底 50 。所述多个光阻块 10 及黑色矩阵 20 设于衬底 10 的同一侧。光疏介质膜 30 设于光阻块 10 及黑色矩阵 20 远离衬底 50 的一侧。
具体地，所述衬底 50 的材料为玻璃或透明柔性材料。
具体地，所述黑色矩阵 20 的材料为黑色光阻材料。
具体地，所述平坦化层 40 的材料为透明光阻材料。
需要说明的是，本发明的彩膜基板在多个光阻块 10 及黑色矩阵 20 上设置光疏介质膜 30 ，光疏介质膜 30 覆盖多个光阻块 10 与黑色矩阵 20 的交界处，平坦化层 40 覆盖光阻块 10 、黑色矩阵 20 及光疏介质膜 30 ，且光疏介质膜 30 的折射率小于平坦化层 40 的折射率，因此，请参阅图 3 ，将本发明的彩膜基板与 TFT 阵列基板 9 进行对组形成液晶显示面板后，即使 TFT 阵列基板 9 与彩膜基板存在偏移使得 TFT 阵列基板 9 上的像素单元 91 与彩膜基板的对应的光阻块 10 并不完全重合，在通过大视角对该液晶显示面板进行观看时，一像素单元 91 射入与该像素单元 91 对应的光阻块 10 相邻的光阻块 10 的光线会在平坦化层 40 与光疏介质膜 30 的交界面发生全反射，从而大视角观看时，每一像素单元 91 射出的光线仅能够透过对应的光阻块 10 而射入人眼，从而无需增大黑色矩阵 20 的尺寸也即在不影响液晶显示面板的穿透率的基础上解决了大视角的色偏问题，从而提升液晶显示面板的品质。
请参阅图 3 ，基于同一发明构思，本发明还提供一种液晶显示面板，包括彩膜基板 1 与彩膜基板 1 相对设置的 TFT 阵列基板 9 及设于彩膜基板 1 与 TFT 阵列基板 9 之间的液晶层（未图示）。
具体地，所述彩膜基板 1 包括相间隔的多个光阻块 10 、设于相邻的光阻块 10 之间的黑色矩阵 20 、设于多个光阻块 10 及黑色矩阵 20 上的光疏介质膜 30 以及覆盖多个光阻块 10 、黑色矩阵 20 及光疏介质膜 30 的平坦化层 40 。所述光疏介质膜 30 覆盖多个光阻块 10 与黑色矩阵 20 的交界处。重点需要注意的是，所述光疏介质膜 30 的折射率小于平坦化层 40 的折射率。
具体地，所述光疏介质膜 30 的折射率满足： n=n OC × sini 入射 ，其中， n 为光疏介质膜 30 的折射率， n OC 为平坦化层 40 的折射率， i 入射 为预设的入射临界角。
具体地，所述平坦化层 40 的折射率为 1.5-1.6 。
优选地，所述平坦化层 40 的折射率可为 1.55 。
具体地，多个光阻块 10 包括依次设置的红色光阻块 11 、绿色光阻块 12 及蓝色光阻块 13 。
具体地，所述彩膜基板还包括衬底 50 。所述多个光阻块 10 及黑色矩阵 20 设于衬底 10 的同一侧。光疏介质膜 30 设于光阻块 10 及黑色矩阵 20 远离衬底 50 的一侧。
具体地，所述衬底 50 的材料为玻璃或透明柔性材料。
具体地，所述黑色矩阵 20 的材料为黑色光阻材料。
具体地，所述平坦化层 40 的材料为透明光阻材料。
具体地，所述 TFT 阵列基板 9 包括间隔设置的多个像素单元 91 ，每一像素单元 91 与彩膜基板 1 的一个光阻块 10 相对应。
进一步地，所述 TFT 阵列基板 9 还包括设于相邻的像素单元 91 之间的阵列侧遮光区 92 。
需要说明的是，本发明的液晶显示面板中彩膜基板 1 在多个光阻块 10 及黑色矩阵 20 上设置光疏介质膜 30 ，光疏介质膜 30 覆盖多个光阻块 10 与黑色矩阵 20 的交界处，平坦化层 40 覆盖光阻块 10 、黑色矩阵 20 及光疏介质膜 30 ，且光疏介质膜 30 的折射率小于平坦化层 40 的折射率，因此，即使 TFT 阵列基板 9 与彩膜基板 1 存在偏移使得 TFT 阵列基板 9 上的像素单元 91 与彩膜基板 1 的对应的光阻块 10 并不完全重合，在通过大视角对该液晶显示面板进行观看时，一像素单元 91 射入与该像素单元 91 对应的光阻块 10 相邻的光阻块 10 的光线会在平坦化层 40 与光疏介质膜 30 的交界面发生全反射，从而大视角观看时，每一像素单元 91 射出的光线仅能够透过对应的光阻块 10 而射入人眼，从而无需增大黑色矩阵 20 的尺寸也即在不影响液晶显示面板的穿透率的基础上解决了大视角的色偏问题，从而提升液晶显示面板的品质。
综上所述，本发明的彩膜基板包括相间隔的多个光阻块、设于相邻的光阻块之间的黑色矩阵、设于多个光阻块及黑色矩阵上的光疏介质膜以及覆盖多个光阻块、黑色矩阵及光疏介质膜的平坦化层，光疏介质膜覆盖多个光阻块与黑色矩阵的交界处，光疏介质膜的折射率小于平坦化层的折射率，利用该彩膜基板与 TFT 阵列基板对组形成液晶显示面板后，大视角观看时，一像素单元射入与该像素单元对应的光阻块相邻的光阻块的光线会在平坦化层与光疏介质膜的交界面发生全反射，从而在不影响液晶显示面板的穿透率的基础上解决了大视角色偏的问题。本发明的液晶显示面板，能够在具有较高的穿透率的同时，解决大视角色偏问题。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (15)

  1. 一种彩膜基板，包括相间隔的多个光阻块、设于相邻的光阻块之间的黑色矩阵、设于多个光阻块及黑色矩阵上的光疏介质膜以及覆盖多个光阻块、黑色矩阵及光疏介质膜的平坦化层；所述光疏介质膜覆盖多个光阻块与黑色矩阵的交界处；
    所述光疏介质膜的折射率小于平坦化层的折射率。
  2. 如权利要求1所述的彩膜基板，其中，所述光疏介质膜的折射率满足：n=n OC×sini 入射，其中，n为光疏介质膜的折射率，n OC为平坦化层的折射率，i 入射为预设的入射临界角。
  3. 如权利要求1所述的彩膜基板，其中，所述平坦化层的折射率为1.5-1.6。
  4. 如权利要求3所述的彩膜基板，其中，所述平坦化层的折射率为1.55。
  5. 如权利要求1所述的彩膜基板，其中，多个光阻块包括依次设置的红色光阻块、绿色光阻块及蓝色光阻块。
  6. 如权利要求1所述的彩膜基板，还包括衬底；所述多个光阻块及黑色矩阵设于衬底的同一侧；光疏介质膜设于光阻块及黑色矩阵远离衬底的一侧。
  7. 如权利要求6所述的彩膜基板，其中，所述衬底的材料为玻璃或透明柔性材料。
  8. 如权利要求1所述的彩膜基板，其中，所述黑色矩阵的材料为黑色光阻材料。
  9. 如权利要求1所述的彩膜基板，其中，所述平坦化层的材料为透明光阻材料。
  10. 一种彩膜基板，包括相间隔的多个光阻块、设于相邻的光阻块之间的黑色矩阵、设于多个光阻块及黑色矩阵上的光疏介质膜以及覆盖多个光阻块、黑色矩阵及光疏介质膜的平坦化层；所述光疏介质膜覆盖多个光阻块与黑色矩阵的交界处；还包括衬底；所述多个光阻块及黑色矩阵设于衬底的同一侧；光疏介质膜设于光阻块及黑色矩阵远离衬底的一侧；
    所述光疏介质膜的折射率小于平坦化层的折射率；
    其中，所述光疏介质膜的折射率满足：n=n OC×sini 入射，其中，n为光疏介质膜的折射率，n OC为平坦化层的折射率，i 入射为预设的入射临界角。
  11. 如权利要求10 所述的彩膜基板，其中，所述平坦化层的折射率为1.5-1.6 。
  12. 如权利要求11 所述的彩膜基板，其中，所述平坦化层的折射率为1.55 。
  13. 如权利要求10 所述的彩膜基板，其中，多个光阻块包括依次设置的红色光阻块、绿色光阻块及蓝色光阻块。
  14. 如权利要求10 所述的彩膜基板，其中，所述衬底的材料为玻璃或透明柔性材料。
  15. 一种液晶显示面板，包括如权利要求1 所述的彩膜基板。
PCT/CN2019/075649 2018-11-29 2019-02-21 彩膜基板及液晶显示面板 WO2020107725A1 (zh)

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