WO2020087583A1 - Coa型液晶显示器 - Google Patents

Coa型液晶显示器 Download PDF

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Publication number
WO2020087583A1
WO2020087583A1 PCT/CN2018/116026 CN2018116026W WO2020087583A1 WO 2020087583 A1 WO2020087583 A1 WO 2020087583A1 CN 2018116026 W CN2018116026 W CN 2018116026W WO 2020087583 A1 WO2020087583 A1 WO 2020087583A1
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Prior art keywords
liquid crystal
photoresist
crystal display
width
pixel
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French (fr)
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陈黎暄
陈俊吉
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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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
    • G02F1/1335—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
    • G02F1/133512—Light shielding layers, e.g. black matrix

Definitions

  • the invention relates to the field of display technology, in particular to a COA type liquid crystal display.
  • Liquid crystal display has many advantages such as thin body, power saving, no radiation, etc. It has been widely used, such as LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen or Laptop screens, etc., dominate the field of flat panel displays.
  • LCD liquid crystal display
  • TFT-LCD Active Thin Film Transistor Liquid Crystal Display
  • TN Twisted Nematic
  • STN Super Twisted Nematic
  • IPS In-Plane Switching
  • VA Vertical Alignment
  • VA type liquid crystal display has extremely high contrast with other types of liquid crystal displays, and has a very wide range of applications in large-size display, such as TV.
  • TFT-LCD has many advantages, there are also many areas that need to be improved. For example, too small viewing angle is one of the important issues that affect the display quality of TFT-LCD.
  • the phenomenon that the display panel has a color shift as the viewing angle becomes larger is also referred to as a large-vision role shift.
  • the big-vision role bias specifically refers to the phenomenon that the color of a liquid crystal display panel (especially a VA-type liquid crystal display panel) is relatively deviated from the front view when viewed at a large angle, for example, in the case of front view
  • the color performance of the LCD panel is normal, but when viewed from a large viewing angle (60 °), the color of the LCD panel is abnormal, as if it was washed with water.
  • 2D1G technology is to provide signals to the Main pixel area and Sub pixel area, which brings the possibility of improving the display effect of large viewing angles by using unused gamma curves.
  • 3T and Charge sharing technologies essentially divide a sub-pixel display area into two parts with different brightness. When using different frontal brightness, the difference in strabismus brightness can adjust the gamma curve of strabismus.
  • the technology based on the above principles is often achieved by capacitive coupling or multi-TFT control.
  • the method based on capacitive coupling has been widely used, but it also has some problems, such as: 1.
  • the degree of capacitive coupling is in different manufacturing processes There are differences, and it is difficult to adjust due to the difficulty of adjusting the thickness and dimensional accuracy of the conductive layer in the manufacturing process; 2.
  • the voltage of the sub pixel area (Vsub) generated by the coupling is not necessarily linear, and at the same time is different Under the gray scale, Vsub is affected by the characteristics of the semiconductor and its process. Even if the same design is used, the improvement effect is different under different equipment and processes; 3.
  • the method of dividing the pixel into different areas and using different voltage driving will reduce LCD aperture ratio, thereby reducing the transmittance of the display.
  • a liquid crystal display includes a casing, a liquid crystal panel disposed in the casing, and a backlight module (Backlight Module) disposed in the casing.
  • the structure of the liquid crystal panel is mainly composed of a thin film transistor array (Thin Film Transistor Array, TFT) array substrate, a color filter (CF) substrate, and a liquid crystal layer (Liquid Crystal Layer) disposed between the two substrates ), Its working principle is to control the rotation of the liquid crystal molecules of the liquid crystal layer by applying a driving voltage on two glass substrates, refracting the light of the backlight module to generate a picture.
  • the CF substrate mainly includes a color resist layer for forming colored light through a color resist unit (R / G / B), and a black matrix (BM) for preventing light leakage at the edge of the pixel.
  • COA Color-filter on Array
  • BM Black Matrix
  • BOA TFT array substrate
  • An object of the present invention is to provide a COA-type liquid crystal display, which can improve the problem of deviation of the viewing angle of the liquid crystal display panel.
  • the present invention provides a COA-type liquid crystal display, which includes an array substrate and a transparent substrate oppositely arranged, a color photoresist layer provided on the side of the array substrate facing the transparent substrate, and the color photoresist layer and Black matrix layer between transparent substrates;
  • the color photoresist layer includes at least two photoresist units of different colors
  • the black matrix layer has pixel openings corresponding to the photoresist units in one-to-one correspondence;
  • At least two photoresist units of different colors have different widths of pixel openings.
  • the color photoresist layer includes photoresist units of three different colors, namely a red photoresist unit, a green photoresist unit and a blue photoresist unit;
  • the pixel openings corresponding to the red photoresist unit, green photoresist unit and blue photoresist unit on the black matrix layer are the first pixel opening, the second pixel opening and the third pixel opening, respectively.
  • the width of the third pixel opening is smaller than the width of the first pixel opening; the width of the third pixel opening is smaller than the width of the second pixel opening.
  • the width of the third pixel opening is less than 92% of the width of the first pixel opening; the width of the third pixel opening is less than 92% of the width of the second pixel opening.
  • the COA liquid crystal display further includes a liquid crystal layer disposed between the array substrate and the transparent substrate, and a backlight module disposed below the array substrate.
  • the black matrix layer is provided on the color photoresist layer, and the liquid crystal layer is located between the black matrix layer and the transparent substrate.
  • the black matrix layer is provided on a side of the transparent substrate facing the array substrate, and the liquid crystal layer is located between the black matrix layer and the array substrate.
  • the black matrix layer includes a plurality of black shading bars, and the plurality of black shading bars enclose a plurality of pixel openings;
  • the photoresist units in the color photoresist layer are connected to each other;
  • Each of the black shading bars is correspondingly located above the connection between two adjacent photoresist units.
  • the width of the black shading strip is 10-35 ⁇ m, and the width of the pixel opening is 50-100 ⁇ m.
  • the COA type liquid crystal display is a vertical alignment type liquid crystal display.
  • the present invention provides a COA type liquid crystal display, including an array substrate, a transparent substrate, a color photoresist layer and a black matrix layer, the color photoresist layer includes at least two different color photoresist units, The black matrix layer has pixel openings corresponding one-to-one with the photoresist units, and at least two different color photoresist units have corresponding pixel openings with different widths.
  • the present invention uses different colors
  • the photoresist units correspond to pixel openings of different widths.
  • the ratio of the side-view transmitted light intensity and the front-view transmitted light intensity of the corresponding sub-pixels can be correspondingly reduced, which can effectively improve the visual role of the liquid crystal display panel Partial problem, and the structure and manufacturing method are simple, will not bring other additional processes and cost impact.
  • FIG. 1 is a schematic diagram of the structure of the COA liquid crystal display of the present invention.
  • FIG. 2 is a schematic diagram of the optical path at a photoresist unit in the COA type liquid crystal display of the present invention.
  • the present invention provides a COA-type liquid crystal display, which includes an array substrate 1 and a transparent substrate 2 disposed oppositely, a color photoresist layer 3 disposed on the side of the array substrate 1 facing the transparent substrate 2, and located in the color
  • the black matrix layer 4 between the photoresist layer 3 and the transparent substrate 2 the liquid crystal layer 5 disposed between the array substrate 1 and the transparent substrate 2, and the backlight module 6 disposed below the array substrate 1.
  • the color photoresist layer 3 includes at least two photoresist units 35 of different colors; each photoresist unit 35 corresponds to a structure belonging to a sub-pixel; the photoresist units 35 in the color photoresist layer 3 are mutually connection.
  • the black matrix layer 4 has pixel openings 45 corresponding to the photoresist units 35 in one-to-one correspondence; the black matrix layer 4 includes a plurality of black shading strips 46 that surround a plurality of pixels Opening 41; each of the black light-shielding strips 46 is correspondingly located above the connection between two adjacent photoresist units 35.
  • the junction of two adjacent photoresist units 35 in the color photoresist layer 3 may be stacked on top of each other, which may cause the liquid crystal (LC) at the pixel edge position to be reversed; in addition; Due to the influence of the electric field at the edge of the pixel electrode or the common electrode on the array substrate 1, dark stripes often occur at the edge of the pixel, and the tilt angle of the liquid crystal in the liquid crystal layer 5 deviates from the central area. This deviation often results in a low frontal transmittance and a high sideview transmittance in the relevant area.
  • the transmission area of each sub-pixel in front view depends on the width L of the corresponding pixel opening 41, the width of the light transmission area in front view is L, and the light transmission of this sub pixel in side view
  • the width of the passing area is Ld * tan ⁇ + ⁇ , where d is the distance from the color photoresist layer 3 to the upper surface of the black matrix layer 4, ⁇ is the side view angle, and ⁇ is a revised parameter value, then the side view transmission of the sub-pixel
  • the ratio of light intensity to frontal transmitted light intensity is 1- (d * tan ⁇ - ⁇ ) / L.
  • the width L of the corresponding pixel opening 41 When the black shading strip 46 is widened, the width L of the corresponding pixel opening 41 will change, and the width L of the pixel opening 41 will cause a corresponding The transmission area of the sub-pixel changes. It can be seen from the above formula that the ratio of the side-view transmitted light intensity to the front-view transmitted light intensity of the sub-pixel depends on the width L of the pixel opening 41 and the color resist layer 3 to the upper surface of the black matrix layer 4 Distance d. Therefore, within a considerable range, increasing the width of the black light-shielding strip 46 to reduce the width L of the corresponding pixel opening 41 can reduce the ratio of the side-view transmitted light intensity to the front-view transmitted light intensity of the corresponding sub-pixel.
  • the width of the pixel opening 45 corresponding to at least two photoresist units 35 of different colors in the present invention is different, so as to improve the ratio of the side-view transmitted light intensity to the front-view transmitted light intensity of the corresponding sub-pixel, which can be improved
  • the visual role of the LCD panel is biased.
  • the color photoresist layer 3 includes photoresist units 35 of three different colors, namely a red photoresist unit 31 corresponding to a red sub-pixel, a green photoresist unit 32 corresponding to a green sub-pixel and a blue photoresist unit corresponding to a blue sub-pixel The blue photoresist unit 33 of the color sub-pixel.
  • the pixel openings 45 corresponding to the red photoresist unit 31, the green photoresist unit 32, and the blue photoresist unit 33 on the black matrix layer 4 are the first pixel opening 41, the second pixel opening 42, and the third Pixel opening 43.
  • the existing liquid crystal display panel there is usually a problem of deviation of the role of the skin color, the main reason is that the brightness of the blue sub-pixel in the oblique view is too large compared to the brightness of the red and green sub-pixels. In order to improve this problem, it is necessary to reduce the ratio of the side-view transmitted light intensity of the blue sub-pixel to the front-view transmitted light intensity.
  • the width of the third pixel opening 43 corresponding to the blue sub-pixel is preferably smaller than the width of the first pixel opening 41 and the width of the second pixel opening 42.
  • the width of the third pixel opening 43 is less than 92% of the width of the first pixel opening 41; the width of the third pixel opening 43 is less than 92% of the width of the second pixel opening 42.
  • the width of the black shading strip 46 is 10-35 ⁇ m, and the width of the pixel opening 41 is 50-100 ⁇ m.
  • the present invention may also adopt a BOA design.
  • the black matrix layer 4 is provided on the color photoresist layer 3, and the liquid crystal layer 5 is located between the black matrix layer 4 and the transparent substrate 2. or,
  • the black matrix layer 4 is provided on the side of the transparent substrate 2 facing the array substrate 1, and the liquid crystal layer 5 is located between the black matrix layer 4 and the array substrate 1.
  • the COA liquid crystal display of the present invention at least two different color photoresist units 35 correspond to different widths of the pixel openings 45.
  • the width of the pixel openings 45 By reducing the width of the pixel openings 45, the side-view transmitted light intensity and front view of the corresponding sub-pixels can be reduced Compared with the prior art, the ratio of the transmitted light intensity of the present invention can effectively improve the problem of the deviation of the visual role of the liquid crystal display panel by corresponding the photoresist units 35 of different colors to the pixel openings 45 of different widths, and the structure and manufacturing method Simple, will not bring other additional processes and cost impact.
  • the present invention provides a COA type liquid crystal display, including an array substrate, a transparent substrate, a color photoresist layer and a black matrix layer.
  • the color photoresist layer includes at least two different color photoresist units.
  • the black matrix layer has pixel openings corresponding one-to-one with the photoresist units, and at least two different color photoresist units have different pixel openings corresponding to different widths.
  • the photoresist units respectively correspond to pixel openings of different widths.
  • the ratio of the side-view transmitted light intensity and the front-view transmitted light intensity of the corresponding sub-pixels can be correspondingly reduced, thereby effectively improving the visual role deviation of the liquid crystal display panel Problems, and the structure and manufacturing method are simple, and will not bring other additional processes and cost effects.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
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Abstract

一种COA型液晶显示器，包括阵列基板(1)、透明基板(2)、彩色光阻层(3)及黑色矩阵层(4)，彩色光阻层(3)包括至少两种不同颜色的光阻单元(35)，黑色矩阵层(4)具有与光阻单元(35)一一对应的像素开口(45)，至少有两种不同颜色的光阻单元(35)所对应的像素开口(45)的宽度(L)不同。相比于现有技术，本申请将不同颜色的光阻单元(35)分别对应不同宽度的像素开口(45)，通过减小相应像素开口(45)的宽度(L)可以对应降低相应子像素的侧视透射光强度与正视透射光强度的比值，进而可有效改善液晶显示面板的视角色偏问题，且结构及制作方法简单，不会带来其他额外制程和成本影响。

Description

COA型液晶显示器 技术领域
本发明涉及显示技术领域，尤其涉及一种COA型液晶显示器。
背景技术
液晶显示器(Liquid Crystal Display，LCD)具有机身薄、省电、无辐射等众多优点，得到了广泛的应用，如：液晶电视、移动电话、个人数字助理(PDA)、数字相机、计算机屏幕或笔记本电脑屏幕等，在平板显示领域中占主导地位。
主动式薄膜晶体管液晶显示器(Thin Film Transistor-LCD，TFT-LCD)是目前主流市场最常见的液晶显示器，按照液晶驱动方式的不同其又可大致分为：扭曲向列(Twisted Nematic，TN)或超扭曲向列(Super Twisted Nematic，STN)型，平面转换(In-Plane Switching，IPS)型、及垂直配向(Vertical Alignment，VA)型。其中VA型液晶显示器相对其他种类的液晶显示器具有极高的对比度，在大尺寸显示，如电视等方面具有非常广的应用。
虽然TFT-LCD具有众多的优点，但是也有很多地方需要改进，例如可视角度过小就是其中一个影响TFT-LCD显示品质的重要问题。显示面板随着视角的变大而出现色偏的现象，也称为大视角色偏。而大视角色偏具体是指液晶显示器面板(特别是VA型的液晶显示面板)在较大的角度观察时，其色彩相对从正面观察产生较大的偏差的现象，例如，在正视的情况下液晶显示面板的色彩表现正常，但从较大的视角(60°)观察下，液晶显示面板的色彩异常，就像是被水洗了一样。
目前，为了解决液晶显示面板的大视角色偏问题，人们提出了各种实现液晶显示面板低色偏(Low color shift)的设计，例如2D1G技术、3T技术以及电荷分享(Charge sharing)技术均是目前解决VA型液晶显示面板色偏问题的常用技术。这些设计的主要共同点就是把液晶显示面板的每一子像素都分成主(main)像素区和次(sub)像素区，然后通过各种方法来实现main像素区和sub像素区的液晶分子偏转角度有所差异，以改善大视角色偏的状况。其中，2D1G技术是对Main像素区和Sub像素区分别提供信号，由此带来了通过采用不用的伽马曲线(Gamma curve)来改善大视角显示效果的可能。3T和Charge sharing技术，本质上都是将一个子像素显示 区域分成亮度不同的两个部分，利用不同正视亮度时，斜视亮度的差异来调节斜视的gamma curve。
基于上述原理的技术，往往通过电容的耦合或多TFT控制来达成，其中基于电容耦合的方法得到了广泛应用，但是其也存在一些问题，例如：1、电容耦合的程度在不同的制程工艺中存在差异，且受到制程中导电层厚度和尺寸精度调整的困难度影响，较难调控；2、在不同的电压下，由耦合产生的sub像素区电压(Vsub)不一定是线性的，同时不同灰阶下Vsub受到半导体及其工艺特性的影响，即使采用同一设计，在不同的设备和制程下其改善效果存在差异；3、采用将像素分为不同区域，采用不同电压驱动的方式，会降低LCD开口率，从而降低显示器的透过率。
通常液晶显示器包括壳体、设于壳体内的液晶面板及设于壳体内的背光模组(Backlight Module)。其中，液晶面板的结构主要是由一薄膜晶体管阵列(Thin Film Transistor Array，TFT Array)基板、一彩色滤光片(Color Filter，CF)基板、以及配置于两基板间的液晶层(Liquid Crystal Layer)所构成，其工作原理是通过在两片玻璃基板上施加驱动电压来控制液晶层的液晶分子的旋转，将背光模组的光线折射出来产生画面。其中，CF基板主要包括用于通过色阻单元(R/G/B)形成有色光的彩色光阻层、用于防止像素边缘漏光的黑色矩阵(Black Matrix，BM)。
COA(Color-filter on Array)技术是一种将彩色滤光层直接制作在阵列基板上的一种集成技术，能够有效解决液晶显示装置对盒工艺中因对位偏差造成的漏光等问题，并能显著提升显示开口率。另外，已有技术人员提出将黑色矩阵(Black Matrix，BM)设计在TFT阵列基板上(BM on Arry，BOA)的技术方案，可继续降低彩膜基板侧的难度。
发明内容
本发明的目的在于提供一种COA型液晶显示器，能够改善液晶显示面板的视角色偏问题。
为实现上述目的，本发明提供了一种COA型液晶显示器，包括相对设置的阵列基板和透明基板、设于阵列基板面向透明基板一侧上的彩色光阻层及位于所述彩色光阻层和透明基板之间的黑色矩阵层；
所述彩色光阻层包括至少两种不同颜色的光阻单元；
所述黑色矩阵层具有与所述光阻单元一一对应的像素开口；
至少有两种不同颜色的光阻单元所对应的像素开口的宽度不同。
所述彩色光阻层包括三种不同颜色的光阻单元，分别为红色光阻单元、 绿色光阻单元和蓝色光阻单元；
所述黑色矩阵层上分别对应所述红色光阻单元、绿色光阻单元和蓝色光阻单元的像素开口为第一像素开口、第二像素开口和第三像素开口。
所述第三像素开口的宽度小于所述第一像素开口的宽度；所述第三像素开口的宽度小于所述第二像素开口的宽度。
所述第三像素开口的宽度小于所述第一像素开口的宽度的92％；所述第三像素开口的宽度小于所述第二像素开口的宽度的92％。
所述的COA型液晶显示器还包括设于所述阵列基板和透明基板之间的液晶层及设于所述阵列基板下方的背光模组。
所述黑色矩阵层设于所述彩色光阻层上，所述液晶层位于所述黑色矩阵层与所述透明基板之间。
所述黑色矩阵层设于所述透明基板面向所述阵列基板的一侧上，所述液晶层位于所述黑色矩阵层和阵列基板之间。
所述黑色矩阵层包括多条黑色遮光条，该多条黑色遮光条围出多个所述像素开口；
所述彩色光阻层中的光阻单元相互连接；
每条所述黑色遮光条对应位于相邻两光阻单元连接处的上方。
所述黑色遮光条的宽度为10-35μm，所述像素开口的宽度为50-100μm。
所述的COA型液晶显示器为垂直配向型液晶显示器。
本发明的有益效果：本发明提供了一种COA型液晶显示器，包括阵列基板、透明基板、彩色光阻层及黑色矩阵层，所述彩色光阻层包括至少两种不同颜色的光阻单元，所述黑色矩阵层具有与所述光阻单元一一对应的像素开口，至少有两种不同颜色的光阻单元所对应的像素开口的宽度不同，相比于现有技术，本发明将不同颜色的光阻单元分别对应不同宽度的像素开口，通过减小相应像素开口的宽度可以对应降低相应子像素的侧视透射光强度与正视透射光强度的比值，进而可有效改善液晶显示面板的视角色偏问题，且结构及制作方法简单，不会带来其他额外制程和成本影响。
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为本发明的COA型液晶显示器的结构示意图；
图2为本发明的COA型液晶显示器中一光阻单元处的光路示意图。
具体实施方式
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1，本发明提供一种COA型液晶显示器，包括相对设置的阵列基板1和透明基板2、设于阵列基板1面向透明基板2一侧上的彩色光阻层3、位于所述彩色光阻层3和透明基板2之间的黑色矩阵层4、设于所述阵列基板1和透明基板2之间的液晶层5及设于所述阵列基板1下方的背光模组6。
其中，所述彩色光阻层3包括至少两种不同颜色的光阻单元35；每一光阻单元35对应属于一子像素的结构中；所述彩色光阻层3中的光阻单元35相互连接。
所述黑色矩阵层4具有与所述光阻单元35一一对应的像素开口45；所述黑色矩阵层4包括多条黑色遮光条46，该多条黑色遮光条46围出多个所述像素开口41；每条所述黑色遮光条46对应位于相邻两光阻单元35连接处的上方。
需要说明的是，在现有技术中，彩色光阻层3中相邻两光阻单元35的连接处会有互相堆叠的情况出现，这会导致像素边缘位置液晶(LC)倒向不良；另外由于阵列基板1上像素电极或公共电极边缘电场的影响，在像素边缘位置往往有暗纹发生，液晶层5中此处的液晶的倾斜角度与中心区域存在偏差。这一偏差往往导致相关区域的正视透过率低而侧视透过率高。另外，从图2的光路示意图可以看出，正视时每个子像素的透射面积依赖于对应像素开口41的宽度L，正视时光线透过区域宽度为L，而侧视时该子像素的光线透过区域宽度为L-d*tanθ+σ，其中，d为彩色光阻层3到黑色矩阵层4上表面的距离，θ为侧视角度，σ为一修订参数值，那么该子像素的侧视透射光强度与正视透射光强度的比值为1-(d*tanθ-σ)/L，当黑色遮光条46加宽以后会引起相应像素开口41宽度L的变化，像素开口41的宽度L会引起相应子像素的透射区域变化，由上述公式可以看出，子像素的侧视透射光强度与正视透射光强度的比值依赖于像素开口41的宽度L及彩色光阻层3到黑色矩阵层4上表面的距离d。所以，在相当范围内，增加黑色遮光条46的宽度来降低相应像素开口41的宽度L可以降低对应子像素的侧视透射光强度与正视透射光强度的比值。
因此基于上述原理，本发明至少有两种不同颜色的光阻单元35所对应的像素开口45的宽度不同，来对相应子像素的侧视透射光强度与正视透射光强度的比值，进而可改善液晶显示面板的视角色偏问题。
具体地，所述彩色光阻层3包括三种不同颜色的光阻单元35，分别为对应属于红色子像素的红色光阻单元31、对应属于绿色子像素的绿色光阻单元32和对应属于蓝色子像素的蓝色光阻单元33。
具体地，所述黑色矩阵层4上分别对应所述红色光阻单元31、绿色光阻单元32和蓝色光阻单元33的像素开口45为第一像素开口41、第二像素开口42和第三像素开口43。
具体地，例如对于现有液晶显示面板通常存在肤色视角色偏问题，究其原因主要就在于蓝色子像素在斜视时的亮度相对于红色子像素和绿色子像素的亮度过大。那么为了改善这一问题，就需要降低蓝色子像素的侧视透射光强度与正视透射光强度的比值。
因此，本发明实施例中优选对应蓝色子像素的所述第三像素开口43的宽度小于所述第一像素开口41的宽度及第二像素开口42的宽度。以降低蓝色子像素的侧视透射光强度与正视透射光强度的比值，进而改善液晶显示面板的视角色偏问题。
具体地，所述第三像素开口43的宽度小于所述第一像素开口41的宽度的92％；所述第三像素开口43的宽度小于所述第二像素开口42的宽度的92％。
具体地，所述黑色遮光条46的宽度为10-35μm，所述像素开口41的宽度为50-100μm。
具体地，本发明还可以采用BOA设计，所述黑色矩阵层4设于所述彩色光阻层3上，所述液晶层5位于所述黑色矩阵层4与所述透明基板2之间。或者，
所述黑色矩阵层4设于所述透明基板2面向所述阵列基板1的一侧上，所述液晶层5位于所述黑色矩阵层4和阵列基板1之间。
本发明的COA型液晶显示器，至少有两种不同颜色的光阻单元35所对应的像素开口45的宽度不同，通过减小像素开口45的宽度可以降低相应子像素的侧视透射光强度与正视透射光强度的比值，相比于现有技术，本发明通过将不同颜色的光阻单元35分别对应不同宽度的像素开口45，可有效改善液晶显示面板的视角色偏问题，且结构及制作方法简单，不会带来其他额外制程和成本影响。
综上所述，本发明提供了一种COA型液晶显示器，包括阵列基板、透 明基板、彩色光阻层及黑色矩阵层，所述彩色光阻层包括至少两种不同颜色的光阻单元，所述黑色矩阵层具有与所述光阻单元一一对应的像素开口，至少有两种不同颜色的光阻单元所对应的像素开口的宽度不同，相比于现有技术，本发明将不同颜色的光阻单元分别对应不同宽度的像素开口，通过减小相应像素开口的宽度可以对应降低相应子像素的侧视透射光强度与正视透射光强度的比值，进而可有效改善液晶显示面板的视角色偏问题，且结构及制作方法简单，不会带来其他额外制程和成本影响。
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 (10)

  1. 一种COA型液晶显示器，包括相对设置的阵列基板和透明基板、设于阵列基板面向透明基板一侧上的彩色光阻层及位于所述彩色光阻层和透明基板之间的黑色矩阵层；
    所述彩色光阻层包括至少两种不同颜色的光阻单元；
    所述黑色矩阵层具有与所述光阻单元一一对应的像素开口；
    至少有两种不同颜色的光阻单元所对应的像素开口的宽度不同。
  2. 如权利要求1所述的COA型液晶显示器，其中，所述彩色光阻层包括三种不同颜色的光阻单元，分别为红色光阻单元、绿色光阻单元和蓝色光阻单元；
    所述黑色矩阵层上分别对应所述红色光阻单元、绿色光阻单元和蓝色光阻单元的像素开口为第一像素开口、第二像素开口和第三像素开口。
  3. 如权利要求2所述的COA型液晶显示器，其中，所述第三像素开口的宽度小于所述第一像素开口的宽度；所述第三像素开口的宽度小于所述第二像素开口的宽度；
    所述第一像素开口的宽度和第二像素开口的宽度相同或不相同。
  4. 如权利要求3所述的COA型液晶显示器，其中，所述第三像素开口的宽度小于所述第一像素开口的宽度的92％；所述第三像素开口的宽度小于所述第二像素开口的宽度的92％。
  5. 如权利要求1所述的COA型液晶显示器，还包括设于所述阵列基板和透明基板之间的液晶层及设于所述阵列基板下方的背光模组。
  6. 如权利要求5所述的COA型液晶显示器，其中，所述黑色矩阵层设于所述彩色光阻层上，所述液晶层位于所述黑色矩阵层与所述透明基板之间。
  7. 如权利要求5所述的COA型液晶显示器，其中，所述黑色矩阵层设于所述透明基板面向所述阵列基板的一侧上，所述液晶层位于所述黑色矩阵层和阵列基板之间。
  8. 如权利要求1所述的COA型液晶显示器，其中，所述黑色矩阵层包括多条黑色遮光条，该多条黑色遮光条围出多个所述像素开口；
    所述彩色光阻层中的光阻单元相互连接；
    每条所述黑色遮光条对应位于相邻两光阻单元连接处的上方。
  9. 如权利要求8所述的COA型液晶显示器，其中，所述黑色遮光条 的宽度为10-35μm，所述像素开口的宽度为50-100μm。
  10. 如权利要求1所述的COA型液晶显示器，为垂直配向型液晶显示器。
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