WO2020191830A1 - 液晶显示面板及预倾角形成方法 - Google Patents

液晶显示面板及预倾角形成方法 Download PDF

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Publication number
WO2020191830A1
WO2020191830A1 PCT/CN2019/083040 CN2019083040W WO2020191830A1 WO 2020191830 A1 WO2020191830 A1 WO 2020191830A1 CN 2019083040 W CN2019083040 W CN 2019083040W WO 2020191830 A1 WO2020191830 A1 WO 2020191830A1
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Prior art keywords
liquid crystal
substrate
crystal layer
black matrix
light
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PCT/CN2019/083040
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English (en)
French (fr)
Inventor
陈杰
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深圳市华星光电技术有限公司
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Publication of WO2020191830A1 publication Critical patent/WO2020191830A1/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
    • 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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes

Definitions

  • the present invention relates to the field of display technology, in particular to a liquid crystal display panel and a method for forming a pretilt angle.
  • LCD Liquid Crystal Display
  • liquid crystal display devices which include a liquid crystal display panel and a backlight module.
  • the working principle of the liquid crystal display panel is to place liquid crystal molecules between two parallel glass substrates. There are many vertical and horizontal small wires between the two glass substrates. The liquid crystal molecules are controlled to change direction by powering on or not, and the light of the backlight module Refraction produces a picture.
  • a liquid crystal display panel consists of a color filter substrate (CF, Color Filter), a thin film transistor substrate (TFT, Thin Film Transistor), a liquid crystal (LC, Liquid Crystal) sandwiched between the color filter substrate and the thin film transistor substrate, and a sealant frame ( Sealant), and its molding process generally includes: front-end array (film, yellow, etching, and peeling), middle-end cell (TFT substrate and CF substrate bonding) and back-end module assembly Manufacturing process (drive IC and printed circuit board pressing).
  • CF color filter substrate
  • TFT Thin Film Transistor
  • LC Liquid Crystal
  • Sealant Sealant
  • its molding process generally includes: front-end array (film, yellow, etching, and peeling), middle-end cell (TFT substrate and CF substrate bonding) and back-end module assembly Manufacturing process (drive IC and printed circuit board pressing).
  • the front Array process is mainly to form TFT substrates to control the movement of liquid crystal molecules;
  • the middle cell process is mainly to add liquid crystal between the TFT substrate and the CF substrate;
  • the back module assembly process is mainly to drive IC pressing and printed circuits
  • the integration of the panel drives the rotation of the liquid crystal molecules to display images.
  • the liquid crystal molecules need to form a pretilt angle.
  • the method is: first apply a voltage to make the liquid crystal molecules rotate, and then irradiate ultraviolet (Ultra-Violet, UV) light to make the reactive monomer (RM ) Reaction, so that the liquid crystal molecules form a pretilt angle.
  • the existing liquid crystal display panel includes a first substrate 100, a second substrate 200 disposed opposite to the first substrate 100, and a second substrate 200 disposed on the first substrate.
  • the black matrix 101 shields the edge liquid crystal area 302 and the sealant frame 400, and is illuminated by UV light.
  • the reactive monomers in the edge liquid crystal region 302 will not react.
  • the unreacted reactive monomers will dissociate into the effective liquid crystal region 301 or interact with other layers. (For example, alignment film) reaction will cause poor display around the display panel (Around Mura).
  • the purpose of the present invention is to provide a liquid crystal display panel, which can ensure that the reactive monomers in the liquid crystal layer fully react and avoid poor peripheral display.
  • the purpose of the present invention is also to provide a method for forming a pretilt angle, which can ensure that the reactive monomer in the liquid crystal layer is fully reacted and avoid poor peripheral display.
  • the present invention provides a liquid crystal display panel, which includes a first substrate, a second substrate disposed opposite to the first substrate, a liquid crystal layer disposed between the first substrate and the second substrate, and A sealant frame arranged between the first substrate and the second substrate and surrounding the liquid crystal layer;
  • the liquid crystal layer includes an effective liquid crystal area and an edge liquid crystal area surrounding the effective liquid crystal area, and the liquid crystal layer is made of a photosensitive liquid crystal material including reactive monomers and liquid crystal molecules;
  • the first substrate includes a first substrate, a black matrix provided on the side of the first substrate facing the second substrate, and a common electrode provided on the black matrix and the first substrate;
  • the second substrate includes a second substrate, and a light-shielding electrode provided on a side of the second substrate facing the first substrate;
  • the black matrix covers the sealant frame and the edge liquid crystal area, and the black matrix directly opposite to the edge liquid crystal area is formed with a plurality of light transmitting slits arranged at intervals, and the light shielding electrode corresponds to the edge liquid crystal area
  • the entire edge liquid crystal area is arranged and covered, the sealant frame is filled with conductive particles, and the light shielding electrode and the common electrode are electrically connected through the conductive particles in the sealant frame.
  • the distance between two adjacent light-transmitting slits is less than 10 ⁇ m.
  • a plurality of light-transmitting slits arranged at intervals are also formed on the black matrix directly opposite to the sealant frame.
  • the conductive particles are conductive gold balls.
  • the present invention provides a method for forming a pretilt angle, which includes the following steps:
  • Step S1 Provide a liquid crystal display panel, comprising a first substrate, a second substrate disposed opposite to the first substrate, a liquid crystal layer disposed between the first substrate and the second substrate, and a liquid crystal layer disposed on the first substrate.
  • a sealant frame between the substrate and the second substrate and surrounding the liquid crystal layer;
  • the liquid crystal layer includes an effective liquid crystal region and an edge liquid crystal region surrounding the effective liquid crystal region, and a material of the liquid crystal layer is a photosensitive liquid crystal material including reactive monomers and liquid crystal molecules;
  • the first substrate includes a first substrate, a black matrix provided on the side of the first substrate facing the second substrate, and a common electrode provided on the black matrix and the first substrate;
  • the second substrate includes a second substrate and a light-shielding electrode provided on a side of the second substrate facing the first substrate;
  • the black matrix covers the sealant frame and the edge liquid crystal area, and the black matrix directly opposite to the edge liquid crystal area is formed with a plurality of light transmitting slits arranged at intervals, and the light shielding electrode corresponds to the edge liquid crystal area Set and cover the entire edge liquid crystal area, the sealant frame is filled with conductive particles, and the shading electrode and the common electrode are electrically connected through the conductive particles in the sealant frame;
  • Step S2 Apply voltage to the first substrate and the second substrate, so that the liquid crystal molecules in the liquid crystal layer rotate to a target pretilt angle;
  • Step S3 irradiate the liquid crystal layer with UV light from the side of the first substrate to cause the reactive monomer to react and fix the liquid crystal molecules at a target pretilt angle.
  • the distance between two adjacent light-transmitting slits is less than 10 ⁇ m.
  • a plurality of light-transmitting slits arranged at intervals are also formed on the black matrix directly opposite to the sealant frame.
  • a first alignment film is further provided between the first substrate and the liquid crystal layer, and a second alignment film is further provided between the second substrate and the liquid crystal layer.
  • the conductive particles are conductive gold balls.
  • the present invention provides a liquid crystal display panel, including a liquid crystal display panel, including a first substrate, a second substrate disposed opposite to the first substrate, and a second substrate disposed on the first substrate and the second substrate.
  • the liquid crystal layer is made of a photosensitive liquid crystal material including reactive monomers and liquid crystal molecules;
  • the first substrate includes a first substrate, and a black substrate arranged on the side of the first substrate facing the second substrate Matrix and a common electrode provided on the black matrix and the first substrate;
  • the second substrate includes a second substrate, a light shielding electrode provided on the side of the second substrate facing the first substrate; and
  • a plurality of light-transmitting slits arranged at intervals are formed on the black matrix directly opposite to the edge liquid crystal area, the light-shielding
  • FIG. 1 is a schematic diagram of a conventional liquid crystal display panel
  • FIG. 2 is a schematic diagram of the liquid crystal display panel of the present invention.
  • FIG. 3 is a flowchart of the pretilt angle forming method of the present invention.
  • FIG. 4 is a schematic diagram of steps S2 to S3 of the method for forming a pretilt angle of the present invention.
  • the present invention provides a liquid crystal display panel including a first substrate 1, a second substrate 2 disposed opposite to the first substrate 1, and disposed between the first substrate 1 and the second substrate 2.
  • the liquid crystal layer 3 and the sealant frame 4 arranged between the first substrate 1 and the second substrate 2 and surrounding the liquid crystal layer 3.
  • the liquid crystal layer 3 includes an effective liquid crystal area 31 and an edge liquid crystal area 32 surrounding the effective liquid crystal area 31, and the liquid crystal layer 3 is made of a photosensitive liquid crystal material including reactive monomers and liquid crystal molecules;
  • the first substrate 1 includes a first substrate 11, a black matrix 12 provided on the side of the first substrate 11 facing the second substrate 2, and a black matrix 12 and the first substrate. 11 on the common electrode 13;
  • the second substrate 2 includes a second substrate 21 and a light-shielding electrode 22 provided on the side of the second substrate 21 facing the first substrate 1.
  • the black matrix 12 covers the sealant frame 4 and the edge liquid crystal area 32, and a plurality of light-transmitting slits 121 arranged at intervals are formed on the black matrix 12 directly opposite to the edge liquid crystal area 32, so
  • the light shielding electrode 22 is arranged corresponding to the edge liquid crystal area 32 and covers the entire edge liquid crystal area 32, the sealant frame 4 is filled with conductive particles 41, and the light shielding electrode 22 and the common electrode 13 pass through the conductive particles in the sealant frame 4 41 Electrical connection.
  • the first substrate 1 is a color filter substrate, and a color filter layer is further provided in an area of the first substrate 1 corresponding to the effective liquid crystal area 31.
  • the color filter The light layer includes color resist blocks arranged in an array, and the black matrix 12 is also arranged between the two adjacent color resist blocks.
  • the second substrate 2 is an array substrate, and the area of the first substrate corresponding to the effective liquid crystal area 31 is further provided with a pixel circuit, and the pixel circuit includes a driving TFT and a The pixel electrode electrically connected to the driving TFT.
  • the distance between two adjacent transparent slits 121 is less than 10 ⁇ m.
  • a plurality of light-transmitting slits 121 arranged at intervals are formed only on the black matrix 12 directly opposite to the edge liquid crystal region 32, this is not a limitation of the present invention. In other embodiments of the present invention, a plurality of light-transmitting slits 121 arranged at intervals may also be formed on the black matrix 12 directly opposite to the sealant frame 4.
  • the light-transmitting slit 121 is used to promote the reaction of the reactive monomer, so that the liquid crystal molecules are fixed at the target pretilt angle through the ultraviolet light, so that Ultraviolet light can irradiate the reactive monomer in the edge liquid crystal region 32 to make it react, and prevent the reactive monomer in the edge liquid crystal region 32 from not reacting, causing poor display.
  • the edge liquid crystal region 32 is no longer It is completely blocked by the black matrix 12, and the reactive monomers therein can fully react, effectively avoiding product defects.
  • the present invention also adds a light-shielding electrode 22 on the second substrate 2.
  • the light-shielding electrode 22 is provided in the sealing
  • the conductive particles 41 in the plastic frame 4 are electrically connected to the common electrode 13, so that when the liquid crystal display panel is working, the light-shielding electrode 2 and the common electrode 13 always maintain the same potential, so that the liquid crystal molecules in the edge liquid crystal region 32 do not reverse and light cannot pass through
  • the edge liquid crystal area 32 exits to compensate for light leakage caused by the light-transmitting slit 121.
  • the materials of the common electrode 13 and the light shielding electrode 22 are both indium tin oxide, the light shielding electrode 22 and the pixel electrode are provided in the same layer, and the conductive particles 41 are conductive gold balls (Au balls).
  • the liquid crystal display panel of the present invention further includes a first alignment film 51 between the first substrate 1 and the liquid crystal layer 3, and a second alignment film 51 between the second substrate 2 and the liquid crystal layer 3. ⁇ 52 ⁇ Film 52.
  • the present invention also provides a method for forming a pretilt angle, including the following steps:
  • Step S1 Provide a liquid crystal display panel, including a first substrate 1, a second substrate 2 disposed opposite to the first substrate 1, a liquid crystal layer 3 disposed between the first substrate 1 and the second substrate 2 And a sealant frame 4 arranged between the first substrate 1 and the second substrate 2 and surrounding the liquid crystal layer 3;
  • the liquid crystal layer 3 includes an effective liquid crystal area 31 and an edge liquid crystal area 32 surrounding the effective liquid crystal area 31.
  • the material of the liquid crystal layer 3 is a photosensitive liquid crystal material including reactive monomers and liquid crystal molecules;
  • the first substrate 1 includes a first substrate 11, a black matrix 12 provided on the side of the first substrate 11 facing the second substrate 2, and a black matrix 12 provided on the black matrix 12 and the first substrate 11 Common electrode 13;
  • the second substrate 2 includes a second substrate 21 and a light-shielding electrode 22 provided on the side of the second substrate 21 facing the first substrate 1;
  • the black matrix 12 covers the sealant frame 4 and the edge liquid crystal area 32, and the black matrix 12 directly opposite to the edge liquid crystal area 32 is formed with a plurality of light-transmitting slits 121 arranged at intervals, and the light-shielding electrode 22 is provided corresponding to the edge liquid crystal area 32 and covers the entire edge liquid crystal area 32.
  • the sealant frame 4 is filled with conductive particles 41, and the light shielding electrode 22 and the common electrode 13 pass through the conductive particles 41 in the sealant frame 4. connection.
  • the first substrate 1 is a color filter substrate, and a color filter layer is further provided in an area of the first substrate 1 corresponding to the effective liquid crystal area 31.
  • the color filter The light layer includes color resist blocks arranged in an array, and the black matrix 12 is also arranged between the two adjacent color resist blocks.
  • the second substrate 2 is an array substrate, and the area of the first substrate corresponding to the effective liquid crystal area 31 is further provided with a pixel circuit, and the pixel circuit includes a driving TFT and a The pixel electrode electrically connected to the driving TFT.
  • the distance between two adjacent transparent slits 121 is less than 10 ⁇ m.
  • a plurality of light-transmitting slits 121 arranged at intervals are formed only on the black matrix 12 directly opposite to the edge liquid crystal region 32, this is not a limitation of the present invention. In other embodiments of the present invention, a plurality of light-transmitting slits 121 arranged at intervals may also be formed on the black matrix 12 directly opposite to the sealant frame 4.
  • Step S2 applying a voltage to the first substrate 1 and the second substrate 2 so that the liquid crystal molecules in the liquid crystal layer 3 rotate to a target pretilt angle.
  • applying voltage to the first substrate 1 and the second substrate 2 specifically applies voltage to the pixel electrode and the common electrode 13.
  • Step S3 irradiate the liquid crystal layer 3 with UV light from the side of the first substrate 1 to cause the reactive monomers to react and fix the liquid crystal molecules at a target pretilt angle.
  • the arrangement of the light-transmitting slit 121 allows the ultraviolet light to pass through the light-transmitting slit 121 to irradiate the reactive monomer in the edge liquid crystal region 32 to make it react, and prevent the reaction in the edge liquid crystal region 32.
  • the non-reactive monomer does not react, causing poor display.
  • the edge liquid crystal region 32 is no longer completely blocked by the black matrix 12, and the reactive monomer therein can fully react, effectively avoiding product defects.
  • the present invention also adds a light-shielding electrode 22 on the second substrate 2.
  • the light-shielding electrode 22 is provided in the sealing
  • the conductive particles 41 in the plastic frame 4 are electrically connected to the common electrode 13, so that when the liquid crystal display panel is working, the light-shielding electrode 2 and the common electrode 13 always maintain the same potential, so that the liquid crystal molecules in the edge liquid crystal region 32 do not reverse and light cannot pass through
  • the edge liquid crystal area 32 exits to compensate for light leakage caused by the light-transmitting slit 121.
  • the materials of the common electrode 13 and the light shielding electrode 22 are both indium tin oxide, the light shielding electrode 22 and the pixel electrode are provided in the same layer, and the conductive particles 41 are conductive gold balls (Au balls).
  • the liquid crystal display panel of the present invention further includes a first alignment film 51 between the first substrate 1 and the liquid crystal layer 3, and a second alignment film 51 between the second substrate 2 and the liquid crystal layer 3. ⁇ 52 ⁇ Film 52.
  • the present invention provides a liquid crystal display panel, including a liquid crystal display panel, including a first substrate, a second substrate disposed opposite to the first substrate, and disposed on the first substrate and the second substrate
  • the liquid crystal layer between and a sealant frame arranged between the first substrate and the second substrate and surrounding the liquid crystal layer;
  • the liquid crystal layer includes an effective liquid crystal area and an edge liquid crystal area surrounding the effective liquid crystal area,
  • the liquid crystal layer is made of a photosensitive liquid crystal material including reactive monomers and liquid crystal molecules;
  • the first substrate includes a first substrate, and a black matrix arranged on the side of the first substrate facing the second substrate And a common electrode provided on the black matrix and the first substrate;
  • the second substrate includes a second substrate, and a light-shielding electrode provided on the side of the second substrate facing the first substrate; and
  • a plurality of light-transmitting slits are formed on the black matrix directly opposite to the edge liquid crystal area.
  • the light-shielding electrode is arranged corresponding to the edge liquid crystal area and covers the entire edge liquid crystal area.
  • the light-shielding electrode and the common electrode pass through the sealant frame
  • the conductive particles are electrically connected to avoid light leakage while ensuring the full reaction of reactive monomers in the liquid crystal layer to prevent poor peripheral display.
  • the invention also provides a method for forming a pretilt angle, which can ensure that the reactive monomers in the liquid crystal layer fully react and prevent poor peripheral display.

Abstract

一种液晶显示面板，包括第一基板（1）、与第一基板（1）相对设置的第二基板（2）、设于第一基板（1）与第二基板（2）之间的液晶层（5）以及设于第一基板（1）与第二基板（2）之间并包围液晶层（5）的密封胶框（4）；液晶层（5）包括有效液晶区（31）及包围有效液晶区（31）的边缘液晶区（32）；第一基板（1）包括第一衬底（11）、设于第一衬底（11）朝向第二基板（2）的一侧的黑色矩阵（12）以及设于黑色矩阵（12）及第一衬底（11）上的公共电极（13）；第二基板（2）包括第二衬底（21）、设于第二衬底（21）朝向第一基板（1）的一侧的遮光电极（22）；与边缘液晶区（32）正对的黑色矩阵（12）上形成有多个间隔排列的透光狭缝（121），遮光电极（22）对应边缘液晶区（32）设置并覆盖整个边缘液晶区（32），且遮光电极（22）与公共电极（13）电性连接，能够保证液晶层（5）中反应性单体充分反应，防止周边显示不良。还提供一种预倾角形成方法。

Description

液晶显示面板及预倾角形成方法 技术领域
本发明涉及显示技术领域，尤其涉及一种液晶显示面板及预倾角形成方法。
 背景技术
随着显示技术的发展，液晶显示器（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，而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器，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两片平行的玻璃基板当中放置液晶分子，两片玻璃基板中间有许多垂直和水平的细小电线，通过通电与否来控制液晶分子改变方向，将背光模组的光线折射出来产生画面。通常液晶显示面板由彩膜基板（CF，Color Filter）、薄膜晶体管基板（TFT，Thin Film Transistor)、夹于彩膜基板与薄膜晶体管基板之间的液晶（LC，Liquid Crystal）及密封胶框（Sealant）组成，其成型工艺一般包括：前段阵列（Array）制程（薄膜、黄光、蚀刻及剥膜）、中段成盒（Cell）制程（TFT基板与CF基板贴合）及后段模组组装制程（驱动IC与印刷电路板压合）。其中，前段Array制程主要是形成TFT基板，以便于控制液晶分子的运动；中段Cell制程主要是在TFT基板与CF基板之间添加液晶；后段模组组装制程主要是驱动IC压合与印刷电路板的整合，进而驱动液晶分子转动，显示图像。
在液晶层的制作过程中，需要让液晶分子形成预倾角，其方法为：先施加电压使得液晶分子旋转，然后照射紫外（Ultra-Violet，UV）光，使得反应性单体（Reactive Monomer，RM）反应，使得液晶分子形成预倾角，如图1所示，现有的液晶显示面板包括第一基板100、与所述第一基板100相对设置的第二基板200、设于所述第一基板100与第二基板200之间的液晶层300以及设于所述第一基板100与第二基板200之间并包围所述液晶层300的密封胶框400；所述液晶层300包括有效液晶区301及包围所述有效液晶区301的边缘液晶区302，在第一基板100上设于黑色矩阵101，所述黑色矩阵101遮挡所述边缘液晶区302及密封胶框400，在通过UV光照射形成预倾角时，由于黑色矩阵101的遮挡，会导致边缘液晶区302中的反应性单体未反应，后续制程时，未反应的反应性单体游离至有效液晶区301中或与其他膜层（例如配向膜）反应，会造成显示面板的周边显示不良（Around Mura）。
 技术问题
本发明的目的在于提供一种液晶显示面板，能够保证液晶层中反应性单体充分反应，避免周边显示不良。
本发明的目的还在于提供一种预倾角形成方法，能够保证液晶层中反应性单体充分反应，避免周边显示不良。
 技术解决方案
为实现上述目的，本发明提供了一种液晶显示面板，包括第一基板、与所述第一基板相对设置的第二基板、设于所述第一基板与第二基板之间的液晶层以及设于所述第一基板与第二基板之间并包围所述液晶层的密封胶框；
所述液晶层包括有效液晶区及包围所述有效液晶区的边缘液晶区，所述液晶层采用包括反应性单体及液晶分子的感光液晶材料制作；
所述第一基板包括第一衬底、设于所述第一衬底朝向所述第二基板的一侧的黑色矩阵以及设于黑色矩阵及第一衬底上的公共电极；所述第二基板包括第二衬底、设于所述第二衬底朝向所述第一基板的一侧的遮光电极；
所述黑色矩阵覆盖所述密封胶框及边缘液晶区，且与所述边缘液晶区正对的黑色矩阵上形成有多个间隔排列的透光狭缝，所述遮光电极对应所述边缘液晶区设置并覆盖整个边缘液晶区，所述密封胶框中填充有导电粒子，且遮光电极与公共电极通过密封胶框中的导电粒子电性连接。
相邻的两个透光狭缝之间的距离小于10μm。
与所述密封胶框正对的黑色矩阵上也形成有多个间隔排列的透光狭缝。
位于第一基板与液晶层之间的第一配向膜以及位于第二基板与液晶层之间的第二配向膜。
所述导电粒子为导电金球。
本发明提供一种预倾角形成方法，包括如下步骤：
步骤S1、提供一种液晶显示面板，包括第一基板、与所述第一基板相对设置的第二基板、设于所述第一基板与第二基板之间的液晶层以及设于所述第一基板与第二基板之间并包围所述液晶层的密封胶框；
所述液晶层包括有效液晶区及包围所述有效液晶区的边缘液晶区，所述液晶层的材料为包括反应性单体及液晶分子的感光液晶材料；
所述第一基板包括第一衬底、设于所述第一衬底朝向所述第二基板的一侧的黑色矩阵以及设于黑色矩阵及第一衬底上的公共电极；所述第二基板包括第二衬底以及设于所述第二衬底朝向所述第一基板的一侧的遮光电极；
所述黑色矩阵覆盖所述密封胶框及边缘液晶区，且与所述边缘液晶区正对的黑色矩阵上形成有多个间隔排列的透光狭缝，所述遮光电极对应所述边缘液晶区设置并覆盖整个边缘液晶区，所述密封胶框中填充有导电粒子，且遮光电极与公共电极通过密封胶框中的导电粒子电性连接；
步骤S2、向所述第一基板及第二基板上施加电压，使得液晶层中的液晶分子旋转至目标预倾角；
步骤S3、从第一基板一侧对所述液晶层进行UV光照射，使得反应性单体反应，将所述液晶分子固定在目标预倾角。
相邻的两个透光狭缝之间的距离小于10μm。
与所述密封胶框正对的黑色矩阵上也形成有多个间隔排列的透光狭缝。
在第一基板与液晶层之间还设有第一配向膜以及在第二基板与液晶层之间还设有第二配向膜。
所述导电粒子为导电金球。
 有益效果
本发明的有益效果：本发明提供一种液晶显示面板，包括一种液晶显示面板，包括第一基板、与所述第一基板相对设置的第二基板、设于所述第一基板与第二基板之间的液晶层以及设于所述第一基板与第二基板之间并包围所述液晶层的密封胶框；所述液晶层包括有效液晶区及包围所述有效液晶区的边缘液晶区，所述液晶层采用包括反应性单体及液晶分子的感光液晶材料制作；所述第一基板包括第一衬底、设于所述第一衬底朝向所述第二基板的一侧的黑色矩阵以及设于黑色矩阵及第一衬底上的公共电极；所述第二基板包括第二衬底、设于所述第二衬底朝向所述第一基板的一侧的遮光电极；与所述边缘液晶区正对的黑色矩阵上形成有多个间隔排列的透光狭缝，所述遮光电极对应所述边缘液晶区设置并覆盖整个边缘液晶区，且遮光电极与公共电极通过密封胶框中的导电粒子电性连接，能够在避免漏光的同时，保证液晶层中反应性单体充分反应，防止周边显示不良。本发明还提供一种预倾角形成方法，能够保证液晶层中反应性单体充分反应，防止周边显示不良。
 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示意图；
图2为本发明的液晶显示面板的示意图；
图3为本发明的预倾角形成方法的流程图；
图4为本发明的预倾角形成方法的步骤S2至步骤S3的示意图。
 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，本发明提供一种液晶显示面板，包括第一基板1、与所述第一基板1相对设置的第二基板2、设于所述第一基板1与第二基板2之间的液晶层3以及设于所述第一基板1与第二基板2之间并包围所述液晶层3的密封胶框4。
具体地，所述液晶层3包括有效液晶区31及包围所述有效液晶区31的边缘液晶区32，所述液晶层3采用包括反应性单体及液晶分子的感光液晶材料制作；
具体地，所述第一基板1包括第一衬底11、设于所述第一衬底11朝向所述第二基板2的一侧的黑色矩阵12以及设于黑色矩阵12及第一衬底11上的公共电极13；所述第二基板2包括第二衬底21以及设于所述第二衬底21朝向所述第一基板1的一侧的遮光电极22。
详细地，所述黑色矩阵12覆盖所述密封胶框4及边缘液晶区32，且与所述边缘液晶区32正对的黑色矩阵12上形成有多个间隔排列的透光狭缝121，所述遮光电极22对应所述边缘液晶区32设置并覆盖整个边缘液晶区32，所述密封胶框4中填充有导电粒子41，且遮光电极22与公共电极13通过密封胶框4中的导电粒子41电性连接。
进一步地，在本发明的一些实施例中，所述第一基板1为彩膜基板，所述第一衬底1对应有效液晶区31的区域内还设有彩色滤光层，所述彩色滤光层包括阵列排布的色阻块，所述黑色矩阵12还设于所述相邻的两个色阻块之间。
进一步地，在本发明的一些实施例中，所述第二基板2为阵列基板，所述第一衬底对应有效液晶区31的区域还设有像素电路，所述像素电路包括驱动TFT及与驱动TFT电性连接的像素电极。
优选地，在本发明的优选实施例中，相邻的两个透光狭缝121之间的距离小于10μm。
进一步地，虽然图2所示的实施例中，仅在与所述边缘液晶区32正对的黑色矩阵12上形成有多个间隔排列的透光狭缝121，但这并非对于本发明的限制，在本发明的其他实施例中，还可以设置与所述密封胶框4正对的黑色矩阵12上也形成有多个间隔排列的透光狭缝121。
需要说明的是，所述透光狭缝121用于在液晶层3中的液晶分子形成预倾角时，供用于促使反应性单体反应，使得液晶分子固定在目标预倾角的紫外光通过，使得紫外光能够照射到边缘液晶区32中的反应性单体使其反应，防止边缘液晶区32中的反应性单体未反应 ，引起显示不良，相比于现有技术，边缘液晶区32不再被黑色矩阵12完全遮挡，其中的反应性单体能够充分反应，有效避免产品不良。
进一步地，由于透光狭缝121的存在，导致边缘液晶区32可能会存在漏光的问题，因此本发明还在第二基板2上增设了一遮光电极22，所述遮光电极22通过设于密封胶框4中的导电粒子41与公共电极13电性连接，从而液晶显示面板工作时，遮光电极2与公共电极13始终保持同电位，从而边缘液晶区32中的液晶分子不翻转，光线无法穿越边缘液晶区32出射，以弥补由于透光狭缝121导致的漏光。
优选地，所述公共电极13及遮光电极22的材料均为氧化铟锡，所述遮光电极22与像素电极同层设置，所述导电粒子41为导电金球（Au ball）。
当然，为了使得液晶分子均匀排列，本发明的液晶显示面板还包括位于第一基板1与液晶层3之间的第一配向膜51以及位于第二基板2与液晶层3之间的第二配向膜52。
请参阅图3，本发明还提供一种预倾角形成方法，包括如下步骤：
步骤S1、提供一种液晶显示面板，包括第一基板1、与所述第一基板1相对设置的第二基板2、设于所述第一基板1与第二基板2之间的液晶层3以及设于所述第一基板1与第二基板2之间并包围所述液晶层3的密封胶框4；
所述液晶层3包括有效液晶区31及包围所述有效液晶区31的边缘液晶区32，所述液晶层3的材料为包括反应性单体及液晶分子的感光液晶材料；
所述第一基板1包括第一衬底11、设于所述第一衬底11朝向所述第二基板2的一侧的黑色矩阵12以及设于黑色矩阵12及第一衬底11上的公共电极13；所述第二基板2包括第二衬底21以及设于所述第二衬底21朝向所述第一基板1的一侧的遮光电极22；
所述黑色矩阵12覆盖所述密封胶框4及边缘液晶区32，且与所述边缘液晶区32正对的黑色矩阵12上形成有多个间隔排列的透光狭缝121，所述遮光电极22对应所述边缘液晶区32设置并覆盖整个边缘液晶区32，所述密封胶框4中填充有导电粒子41，且遮光电极22与公共电极13通过密封胶框4中的导电粒子41电性连接。
具体地，在本发明的一些实施例中，所述第一基板1为彩膜基板，所述第一衬底1对应有效液晶区31的区域内还设有彩色滤光层，所述彩色滤光层包括阵列排布的色阻块，所述黑色矩阵12还设于所述相邻的两个色阻块之间。
进一步地，在本发明的一些实施例中，所述第二基板2为阵列基板，所述第一衬底对应有效液晶区31的区域还设有像素电路，所述像素电路包括驱动TFT及与驱动TFT电性连接的像素电极。
优选地，在本发明的优选实施例中，相邻的两个透光狭缝121之间的距离小于10μm。
进一步地，虽然图2所示的实施例中，仅在与所述边缘液晶区32正对的黑色矩阵12上形成有多个间隔排列的透光狭缝121，但这并非对于本发明的限制，在本发明的其他实施例中，还可以设置与所述密封胶框4正对的黑色矩阵12上也形成有多个间隔排列的透光狭缝121。
 
步骤S2、向所述第一基板1及第二基板2上施加电压，使得液晶层3中的液晶分子旋转至目标预倾角。
具体地，向所述第一基板1及第二基板2施加电压具体是指向所述像素电极及公共电极13施加电压。
步骤S3、从第一基板1一侧对所述液晶层3进行UV光照射，使得反应性单体反应，将所述液晶分子固定在目标预倾角。
需要说明的是，所述透光狭缝121的设置，使得紫外光穿过透光狭缝121能够照射到边缘液晶区32中的反应性单体使其反应，防止边缘液晶区32中的反应性单体未反应 ，引起显示不良，相比于现有技术，边缘液晶区32不再被黑色矩阵12完全遮挡，其中的反应性单体能够充分反应，有效避免产品不良。
进一步地，由于透光狭缝121的存在，导致边缘液晶区32可能会存在漏光的问题，因此本发明还在第二基板2上增设了一遮光电极22，所述遮光电极22通过设于密封胶框4中的导电粒子41与公共电极13电性连接，从而液晶显示面板工作时，遮光电极2与公共电极13始终保持同电位，从而边缘液晶区32中的液晶分子不翻转，光线无法穿越边缘液晶区32出射，以弥补由于透光狭缝121导致的漏光。
优选地，所述公共电极13及遮光电极22的材料均为氧化铟锡，所述遮光电极22与像素电极同层设置，所述导电粒子41为导电金球（Au ball）。
当然，为了使得液晶分子均匀排列，本发明的液晶显示面板还包括位于第一基板1与液晶层3之间的第一配向膜51以及位于第二基板2与液晶层3之间的第二配向膜52。
综上所述，本发明提供一种液晶显示面板，包括一种液晶显示面板，包括第一基板、与所述第一基板相对设置的第二基板、设于所述第一基板与第二基板之间的液晶层以及设于所述第一基板与第二基板之间并包围所述液晶层的密封胶框；所述液晶层包括有效液晶区及包围所述有效液晶区的边缘液晶区，所述液晶层采用包括反应性单体及液晶分子的感光液晶材料制作；所述第一基板包括第一衬底、设于所述第一衬底朝向所述第二基板的一侧的黑色矩阵以及设于黑色矩阵及第一衬底上的公共电极；所述第二基板包括第二衬底、设于所述第二衬底朝向所述第一基板的一侧的遮光电极；与所述边缘液晶区正对的黑色矩阵上形成有多个间隔排列的透光狭缝，所述遮光电极对应所述边缘液晶区设置并覆盖整个边缘液晶区，且遮光电极与公共电极通过密封胶框中的导电粒子电性连接，能够在避免漏光的同时，保证液晶层中反应性单体充分反应，防止周边显示不良。本发明还提供一种预倾角形成方法，能够保证液晶层中反应性单体充分反应，防止周边显示不良。
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. 一种液晶显示面板，包括第一基板、与所述第一基板相对设置的第二基板、设于所述第一基板与第二基板之间的液晶层以及设于所述第一基板与第二基板之间并包围所述液晶层的密封胶框；
    所述液晶层包括有效液晶区及包围所述有效液晶区的边缘液晶区，所述液晶层采用包括反应性单体及液晶分子的感光液晶材料制作；
    所述第一基板包括第一衬底、设于所述第一衬底朝向所述第二基板的一侧的黑色矩阵以及设于黑色矩阵及第一衬底上的公共电极；所述第二基板包括第二衬底以及设于所述第二衬底朝向所述第一基板的一侧的遮光电极；
    所述黑色矩阵覆盖所述密封胶框及边缘液晶区，且与所述边缘液晶区正对的黑色矩阵上形成有多个间隔排列的透光狭缝，所述遮光电极对应所述边缘液晶区设置并覆盖整个边缘液晶区，所述密封胶框中填充有导电粒子，且遮光电极与公共电极通过密封胶框中的导电粒子电性连接。
  2. 如权利要求1所述的液晶显示面板，其中，相邻的两个透光狭缝之间的距离小于10μm。
  3. 如权利要求1所述的液晶显示面板，其中，与所述密封胶框正对的黑色矩阵上也形成有多个间隔排列的透光狭缝。
  4. 如权利要求1所述的液晶显示面板，还包括位于第一基板与液晶层之间的第一配向膜以及位于第二基板与液晶层之间的第二配向膜。
  5. 如权利要求1所述的液晶显示面板，其中，所述导电粒子为导电金球。
  6. 一种预倾角形成方法，包括如下步骤：
    步骤S1、提供一种液晶显示面板，包括第一基板、与所述第一基板相对设置的第二基板、设于所述第一基板与第二基板之间的液晶层以及设于所述第一基板与第二基板之间并包围所述液晶层的密封胶框；
    所述液晶层包括有效液晶区及包围所述有效液晶区的边缘液晶区，所述液晶层的材料为包括反应性单体及液晶分子的感光液晶材料；
    所述第一基板包括第一衬底、设于所述第一衬底朝向所述第二基板的一侧的黑色矩阵以及设于黑色矩阵及第一衬底上的公共电极；所述第二基板包括第二衬底以及设于所述第二衬底朝向所述第一基板的一侧的遮光电极；
    所述黑色矩阵覆盖所述密封胶框及边缘液晶区，且与所述边缘液晶区正对的黑色矩阵上形成有多个间隔排列的透光狭缝，所述遮光电极对应所述边缘液晶区设置并覆盖整个边缘液晶区，所述密封胶框中填充有导电粒子，且遮光电极与公共电极通过密封胶框中的导电粒子电性连接；
    步骤S2、向所述第一基板及第二基板上施加电压，使得液晶层中的液晶分子旋转至目标预倾角；
    步骤S3、从第一基板一侧对所述液晶层进行UV光照射，使得反应性单体反应，将所述液晶分子固定在目标预倾角。
  7. 如权利要求6所述的预倾角形成方法，其中，相邻的两个透光狭缝之间的距离小于10μm。
  8. 如权利要求6所述的预倾角形成方法，其中，与所述密封胶框正对的黑色矩阵上也形成有多个间隔排列的透光狭缝。
  9. 如权利要求6所述的预倾角形成方法，其中，在第一基板与液晶层之间还设有第一配向膜以及在第二基板与液晶层之间还设有第二配向膜。
  10. 如权利要求6所述的预倾角形成方法，其中，所述导电粒子为导电金球。
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CN113325626B (zh) * 2021-05-20 2022-06-10 Tcl华星光电技术有限公司 液晶显示屏及其制作方法

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