WO2019127635A1 - 一种液晶显示面板的配向方法 - Google Patents

一种液晶显示面板的配向方法 Download PDF

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Publication number
WO2019127635A1
WO2019127635A1 PCT/CN2018/071380 CN2018071380W WO2019127635A1 WO 2019127635 A1 WO2019127635 A1 WO 2019127635A1 CN 2018071380 W CN2018071380 W CN 2018071380W WO 2019127635 A1 WO2019127635 A1 WO 2019127635A1
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Prior art keywords
liquid crystal
common electrode
layer
array substrate
substrate
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PCT/CN2018/071380
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English (en)
French (fr)
Inventor
吕晓文
江博仁
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Priority to US15/748,568 priority Critical patent/US10782568B2/en
Publication of WO2019127635A1 publication Critical patent/WO2019127635A1/zh
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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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
    • G02F1/133788—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by light irradiation, e.g. linearly polarised light photo-polymerisation
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133325—Assembling processes
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133742—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers for homeotropic alignment
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133749—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers for low pretilt angles, i.e. lower than 15 degrees
    • 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
    • G02F1/1341—Filling or closing of cells

Definitions

  • the present invention relates to the field of display, and in particular to a method for aligning a liquid crystal display panel.
  • HVA (High Vertical Alignment) display has the advantages of wide viewing angle, high contrast and no need for friction alignment, making it one of the most commonly used technologies for TFT-LCDs for large-size TVs.
  • the specific repairing method is a preset repairing line. When a disconnection is bad, the lower end line is connected to the repairing line, and at the same time, the winding is connected to the upper repairing line to complete the repair of the Data broken line.
  • the existing HVA products generally use the pressure difference between the pixel electrode (RGB) and the common voltage substrate (CF) of the above color film substrate (CF) to align the panel; the existing alignment method has a deficiency. If there is a data line (Data) disconnection when it is aligned, at this time, the pixel electrode cannot obtain the normal voltage at the disconnection, so the alignment cannot be performed here; even if the above method is used to complete the repair of the data line However, due to poor alignment of the liquid crystal here, display abnormalities may still occur, which lowers the yield of the product.
  • Data data line
  • the technical problem to be solved by the present invention is to provide a method for aligning a liquid crystal display panel, which can improve the alignment effect, reduce the dependence of the liquid crystal alignment process on the data line, and improve the product yield.
  • an aspect of an embodiment of the present invention provides a method for aligning a liquid crystal display panel, including the following steps:
  • the liquid crystal layer is irradiated with ultraviolet rays.
  • the step of forming the color film substrate, the array substrate and the liquid crystal layer into a display panel is specifically as follows:
  • An array substrate is provided, at least a common electrode line layer, a pixel electrode layer and a second alignment film layer are formed on the array substrate, and a common electrode line is disposed on the common electrode line layer;
  • the color film substrate and the array substrate are paired into a component cassette.
  • the common electrode line of the array substrate is a mesh structure, and the common electrode layer of the color filter substrate is a layered structure.
  • the area of the area covered by the common electrode line of the array substrate and the common electrode layer of the color filter substrate is greater than or equal to the area of the liquid crystal layer after the color filter substrate and the array substrate are assembled into a box. .
  • the step of aligning the liquid crystal layer of the liquid crystal display panel by the predetermined voltage difference, so that the liquid crystal molecules in the liquid crystal layer are arranged according to a preset tilt angle includes:
  • a vertical electric field is provided between the color filter substrate and the array substrate by the predetermined voltage difference, so that a pretilt angle of liquid crystal molecules of the liquid crystal layer reaches 0 degrees.
  • the first alignment voltage applied to the common electrode line of the array substrate is removed, and the second alignment voltage applied to the common electrode layer of the color filter substrate is removed.
  • another aspect of the embodiments of the present invention provides a method for aligning a liquid crystal display panel, wherein the method includes the following steps:
  • the common electrode line of the array substrate is a mesh structure, and the common electrode layer of the color film substrate is a layered structure;
  • the liquid crystal layer is irradiated with ultraviolet rays.
  • the area of the area covered by the common electrode line of the array substrate and the common electrode layer of the color filter substrate is greater than or equal to the area of the liquid crystal layer after the color filter substrate and the array substrate are assembled into a box. .
  • the step of aligning the liquid crystal layer of the liquid crystal display panel by the predetermined voltage difference, so that the liquid crystal molecules in the liquid crystal layer are arranged according to a preset tilt angle includes:
  • a vertical electric field is provided between the color filter substrate and the array substrate by the predetermined voltage difference, so that a pretilt angle of liquid crystal molecules of the liquid crystal layer reaches 0 degrees.
  • the first alignment voltage applied to the common electrode line of the array substrate is removed, and the second alignment voltage applied to the common electrode layer of the color filter substrate is removed.
  • Embodiments of the present invention have the following beneficial effects:
  • the present invention provides an alignment method of a liquid crystal display panel in which a liquid crystal layer in a panel is aligned by using a pressure difference between a common electrode line layer of the array substrate and a common electrode layer of the color filter substrate. Since the common electrode line layer of the array substrate is a network, the common electrode layer of the color filter substrate is a layered structure, both of which are integral structures, which can improve the alignment effect, and no longer rely on the data line as in the prior art. Even if some of the data lines in the pixel electrode are damaged, the alignment of the liquid crystal can be completed, thereby improving the product yield.
  • FIG. 1 is a schematic structural view of an embodiment of a liquid crystal display panel according to a liquid crystal display panel alignment method provided by the present invention
  • Figure 2 is a top plan view of the color filter substrate of Figure 1;
  • Figure 3 is a side elevational view of the color filter substrate of Figure 2;
  • Figure 4 is a side elevational view of the array substrate of Figure 1;
  • FIG. 5 is a top plan view of a pixel region of the array substrate of FIG. 1;
  • FIG. 6 is a schematic structural view of an embodiment of a liquid crystal display panel alignment method provided by the present invention.
  • FIG. 1 is a schematic diagram of a liquid crystal panel according to an alignment method of a liquid crystal display panel provided by the present invention; and FIG. 2 to FIG. 5 are combined.
  • the liquid crystal display panel includes at least a color filter substrate 1, an array substrate 2, and a liquid crystal layer 3 between the color filter substrate 1 and the array substrate 2, and is disposed outside the liquid crystal layer 3 Plastic frame 4.
  • FIG. 2 is a top plan view of the color filter substrate 1 of FIG. 1 , as shown in FIG. 3 .
  • the color filter substrate 1 includes a first substrate 10, a black matrix 12, a plurality of color photoresist blocks 13, a first insulating layer 14, a common electrode layer 15, and a first alignment film layer 16.
  • the first substrate 10 may be, for example, a transparent glass substrate or a resin substrate, but the present invention is not limited thereto.
  • the black matrix 120 is disposed over the first substrate 10 and defines a plurality of first pixel regions PX1. These first pixel regions PX1 are arranged in an array.
  • a plurality of color resist blocks 13 are disposed on the first substrate 10, and each of the color resist blocks 130 is located in a corresponding one of the first pixel regions PX1.
  • the color block block 130 is a red block or a green block or a blue block, but the invention is not limited thereto.
  • the color block 130 may be any suitable color ( A photoresist block such as white.
  • the plurality of colored photoresist blocks 13 include a red photoresist block, a green photoresist block, and a blue photoresist block.
  • the red light blocking block, the green light blocking block, and the blue light blocking block may be arranged in an array of a photoresist block unit.
  • the first insulating layer 14 is disposed on the black matrix 120 and the plurality of colored photoresist blocks 13.
  • the first insulating layer 14 may be formed of an inorganic insulating material or an organic insulating material.
  • the common electrode layer 15 is disposed on the first insulating layer 14, which is a layered structure.
  • the common electrode layer 15 may be formed, for example, of one or more of indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium antimony zinc oxide.
  • the invention is not limited thereto.
  • the first alignment film layer 16 is disposed over the common electrode layer 15.
  • the first alignment film layer 160 is formed of polyimide (PI), but the present invention is not limited thereto.
  • FIG. 4 is a side view of an array substrate according to an embodiment of the present invention
  • FIG. 5 is a schematic plan view of a unit pixel region.
  • the array substrate 2 includes a second substrate 20, a TFT layer 25, a common electrode line layer 21, an insulating protective layer 22, a pixel electrode layer 23, and a second alignment film layer 24.
  • the second substrate 20 may be, for example, a transparent glass substrate or a resin substrate, but the invention is not limited thereto.
  • a plurality of scan lines 220 and a plurality of data lines 230 are defined in the TFT layer 25 to be insulatively interdigitated to define a plurality of second pixel regions PX2.
  • the second pixel region PX2 and the first pixel region PX1 are in one-to-one correspondence;
  • At least one switching unit 240 is disposed in each of the second pixel regions PX2 of the TFT layer 25, and the switching unit 240 includes, for example, a gate electrode, a gate insulating layer, an active layer, a source and a drain, wherein the source and the drain The drains are in contact with both ends of the semi-active layer, respectively.
  • An insulating protective layer 22 is formed on the TFT layer 25, and a via hole is formed on the insulating protective layer 22 corresponding to the drain.
  • the pixel electrode layer 23 and the common electrode line layer 21 are formed on the insulating protective layer 22, wherein the pixel electrode 23 is in contact with the drain of the TFT layer through a via.
  • a common electrode line is disposed in the common electrode line layer 21, and the common electrode line is a mesh structure which is insulated from the pixel electrode layer 23.
  • the pixel electrode layer 23 may be made of one or more of, for example, indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium antimony zinc oxide, but the invention is not limited thereto. .
  • the second alignment film layer 24 is formed on the pixel electrode 23, the common electrode line layer 21, and the insulating protective layer 22.
  • the second alignment film layer 24 is formed of polyimide (PI), but the present invention is not limited thereto.
  • FIG. 6 is a schematic structural view of an embodiment of a liquid crystal display panel alignment method provided by the present invention. Referring to the foregoing FIG. 1 to FIG. 5, in the embodiment, the method includes the following steps:
  • Step S10 the color film substrate 1, the array substrate 2 and the liquid crystal layer 3 are assembled into a liquid crystal display panel;
  • a color filter substrate 1 is provided, at least a common electrode layer 15 and a first alignment film layer 16 are formed on the color filter substrate, wherein the common electrode layer 15 of the color filter substrate 1 is a layered structure;
  • the common electrode layer 15 of the color filter substrate 1 is a layered structure
  • An array substrate 2 is provided, at least a common electrode line layer 21, a pixel electrode layer 23, and a second alignment film layer 24 are formed on the array substrate 2; wherein the common electrode lines of the array substrate 2 are a mesh structure;
  • the color filter substrate 1 and the array substrate 2 are paired with a composition box. It can be understood that, in one example, after the color filter substrate 1 and the array substrate 2 are assembled into a box, the common electrode of the array substrate 1 is The area of the area covered by the line overlapping the common electrode layer of the color filter substrate 2 is greater than or equal to the area of the liquid crystal layer.
  • Step S11 applying a first alignment voltage to the common electrode line layer 21 of the array substrate 2, and applying a second alignment voltage to the common electrode layer 15 of the color filter substrate 1, between the first alignment voltage and the second alignment voltage
  • a predetermined voltage difference wherein the predetermined voltage difference is selected according to a specific situation, such as 10V, etc.;
  • step S12 the liquid crystal layer 3 of the liquid crystal display panel is aligned by the predetermined voltage difference, so that the liquid crystal molecules in the liquid crystal layer 3 are arranged according to a preset tilt angle; in an embodiment, the step S12 specifically includes :
  • a vertical electric field is applied between the color filter substrate 1 and the array substrate 2 by the predetermined voltage difference, so that the pretilt angle of the liquid crystal molecules of the liquid crystal layer 3 reaches 0 degrees.
  • step S13 the liquid crystal layer 3 is irradiated with ultraviolet rays to be solidified.
  • the pixel electrode layer 23 does not access any signal, and after completing the alignment process, the following steps are included:
  • the first alignment voltage applied to the common electrode line 21 of the array substrate 2 is removed, and the second alignment voltage applied to the common electrode layer 15 of the color filter substrate 1 is removed.
  • the present invention provides an alignment method of a liquid crystal display panel in which a liquid crystal layer in a panel is aligned by using a pressure difference between a common electrode line layer of the array substrate and a common electrode layer of the color filter substrate. Since the common electrode line layer of the array substrate is a network, the common electrode layer of the color filter substrate is a layered structure, both of which are integral structures, which can improve the alignment effect, and no longer rely on the data line as in the prior art. Even if some of the data lines in the pixel electrode are damaged, the alignment of the liquid crystal can be completed, thereby improving the product yield.

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Abstract

一种液晶显示面板的配向方法，包括步骤：将彩膜基板（1）、阵列基板（2）与液晶层（3）组立为一液晶显示面板（S10）；向阵列基板（2）的公共电极线层21施加第一配向电压，向彩膜基板（1）的公共电极层（15）施加第二配向电压（S11），第一配向电压与第二配向电压之间存在预定电压差；通过预定电压差对液晶显示面板的液晶层（3）进行配向，使得液晶层（3）中的液晶分子按照预设倾角排列（S12）；采用紫外线照射所述液晶层（3）（S13）。该配向方法可以降低液晶配向对数据线的依赖，提高产品良率。

Description

一种液晶显示面板的配向方法
本申请要求于2017年12月29日提交中国专利局、申请号为201711486886.5、发明名称为“一种液晶显示面板的配向方法”的中国专利申请的优先权，上述专利的全部内容通过引用结合在本申请中。
技术领域
本发明涉及显示领域，特别涉及一种液晶显示面板的配向方法。
背景技术
HVA(High Vertical Alignment，高垂直排列)显示以其宽视角，高对比度和无须摩擦配向等优势，成为大尺寸TV用TFT-LCD的最常用技术之一，
随着液晶显示的越来越普及，对液晶显示的显示效果也提出了越来越高的要求。对显示不良的容忍度越来越低，其中点线不良是最不能容忍的不良，特别是线不良，一般都是报废处理。
所以一般在设计的时候就会考虑到对点线不良进行修复。在设计中会考虑到对数据线的断线进行修复，修复成功能大大提高产品良率降低成产成本，提高产品竞争力。具体修复方法为预设修补线，当发生断线不良时，将下端线接到修补线上，同时通过绕线连接到上端修补线上，完成对Data断线的修补。
但是现有的HVA产品一般用像素电极(RGB)和上面的彩膜基板(CF)的公共电压(CF Com)的压差来对面板进行配向；现有的这种配向方法存在一个不足之处，如果在配向的时候，存在数据线(Data)断线时，此时在断线处像素电极无法获得正常电压，故在此处的无法正常配向；后续即使使用上面的方法完成数据线的修复，但是由于此处液晶配向不良，仍然会出现显示异常，降低了产品良率。
发明内容
本发明所要解决的技术问题在于，提供一种液晶显示面板的配向方法，可以提高配向的效果，降低液晶配向制程对数据线的依赖，提高了产品良率。
为了解决上述技术问题，本发明的实施例的一方面提供一种液晶显示面板的配向方法，其包括以下步骤：
将彩膜基板、阵列基板与液晶层组立为一液晶显示面板；
向阵列基板的公共电极线施加第一配向电压，向彩膜基板的公共电极层施加第二配向电压，所述第一配向电压与所述第二配向电压之间存在预定电压差；
通过所述预定电压差对所述液晶显示面板的液晶层进行配向，使得所述液晶层中的液晶分子按照预设倾角排列；
采用紫外线照射所述液晶层。
其中，所述将彩膜基板、阵列基板与液晶层组立为一显示面板的步骤具体为：
提供一彩膜基板，在所述彩膜基板上至少形成有公共电极层以及第一配向膜层；
提供一阵列基板，在所述阵列基板上至少形成有公共电极线层、像素电极层以及第二配向膜层，所述公共电极线层上布置有公共电极线；
在所述彩膜基板、阵列基板上涂布胶框；
在所述胶框围成的区域内填充分子形成液晶层；
将所述彩膜基板、阵列基板进行对组成盒。
其中，所述阵列基板的公共电极线为网状结构，所述彩膜基板的公共电极层为层状结构。
其中，在所述彩膜基板与阵列基板对组成盒后，所述阵列基板的公共电极线所覆盖的区域与所述彩膜基板的公共电极层重叠的面积大于或等于所述液晶层的面积。
其中，通过所述预定电压差对所述液晶显示面板的液晶层进行配向，使得所述液晶层中的液晶分子按照预设倾角排列的步骤包括：
通过所述预定电压差在所述彩膜基板和所述阵列基板之间提供垂直电场，使所述液晶层的液晶分子的预倾角达到0度。
其中，在完成所述配向之后，包括以下步骤：
去除对所述阵列基板的公共电极线施加的第一配向电压，以及去除对彩膜基板的公共电极层施加的第二配向电压。
相应地，本发明实施例的另一方面，还提供一种液晶显示面板的配向方法，其中，所述方法包括以下步骤：
将彩膜基板、阵列基板与液晶层组立为一液晶显示面板；
向阵列基板的公共电极线施加第一配向电压，向彩膜基板的公共电极层施加第二配向电压，所述第一配向电压与所述第二配向电压之间存在预定电压差；其中，所述阵列基板的公共电极线为网状结构，所述彩膜基板的公共电极层为层状结构；
通过所述预定电压差对所述液晶显示面板的液晶层进行配向，使得所述液晶层中的液晶分子按照预设倾角排列；
采用紫外线照射所述液晶层。
其中，在所述彩膜基板与阵列基板对组成盒后，所述阵列基板的公共电极线所覆盖的区域与所述彩膜基板的公共电极层重叠的面积大于或等于所述液晶层的面积。
其中，通过所述预定电压差对所述液晶显示面板的液晶层进行配向，使得所述液晶层中的液晶分子按照预设倾角排列的步骤包括：
通过所述预定电压差在所述彩膜基板和所述阵列基板之间提供垂直电场，使所述液晶层的液晶分子的预倾角达到0度。
其中，在完成所述配向之后，包括以下步骤：
去除对所述阵列基板的公共电极线施加的第一配向电压，以及去除对彩膜基板的公共电极层施加的第二配向电压。实施本发明实施例，具有如下有益效果：
本发明提供一种液晶显示面板的配向方法，在配向时，通过利用阵列基板的公共电极线层与所述彩膜基板的公共电极层之间的压差对面板内液晶层进行配向。由于阵列基板的公共电极线层为网络状，所述彩膜基板的公共电极层为层状结构，两者均是整体结构，其可以提高配向效果，不再象现有技术中一样依赖数据线，即使存在像素电极中某些数据线出现损坏时，依然 可以完成液晶的配向，从而提高产品良率。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1是本发明提供的一种液晶显示面板配向方法涉及的液晶显示面板一个实施例的结构示意图；
图2是图1中彩膜基板的俯视示意图；
图3是图2中彩膜基板的侧视示意图；
图4是图1中阵列基板的侧视示意图；
图5是图1中阵列基板的一个像素区域的俯视示意图；
图6是本发明提供的一种液晶显示面板配向方法的一个实施例的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其它实施例，都属于本发明保护的范围。
在此，还需要说明的是，为了避免因不必要的细节而模糊了本发明，在附图中仅仅示出了与根据本发明的方案密切相关的结构和/或处理步骤，而省略了与本发明关系不大的其他细节。
如图1所示，是本发明提供的一种液晶显示面板的配向方法所涉及的液晶面板示意图；一并结合图2至图5所示。在该实施例中，该液晶显示面板至少包括：包括彩膜基板1、阵列基板2及位于所述彩膜基板1和所述阵列基板2之间的液晶层3，在液晶层3外侧设置有胶框4。
图2是图1中的彩膜基板1的俯视示意图，一并结合图3所示。其中，彩膜基板1包括：第一基板10、黑色矩阵12、多个彩色光阻块13、第一绝缘层14、公共电极层15以及第一配向膜层16。
第一基板10可例如是透明的玻璃基板或者树脂基板，但本发明并不限制于此。
黑色矩阵120设置在第一基板10之上且限定出多个第一像素区域PX1。这些第一像素区域PX1呈阵列排布。
多个彩色光阻块13设置在第一基板10之上，且每个彩色光阻块130位于其对应的一个第一像素区域PX1中。在本实施例中，所述彩色光阻块130为红色光阻块或绿色光阻块或蓝色光阻块，但本发明并不限制于此，例如彩色光阻块130可以为任何合适颜色(诸如白色)的光阻块。所述多个彩色光阻块13包括红色光阻块、绿色光阻块和蓝色光阻块。在本实施例中，可以以红色光阻块、绿色光阻块和蓝色光阻块为一光阻块单元进行阵列排布。
第一绝缘层14设置在黑色矩阵120和多个彩色光阻块13上。第一绝缘层14可以采用无机绝缘材料或者有机绝缘材料形成。
公共电极层15设置在第一绝缘层14上，其为层状结构。作为本发明的一种实施方式，公共电极层15可例如由铟锡氧化物、铟锌氧化物、铝锡氧化物、铝锌氧化物、铟锗锌氧化物中的一种或多种形成，但本发明并不限制于此。
第一配向膜层16设置在公共电极层15之上。作为本发明的一种实施方式，第一配向膜层160由聚酰亚胺(PI)形成，但本发明并不限制于此。
可以理解的是，为了便于图示黑色矩阵12和彩色光阻块13的设置，在图2中并未示出第一绝缘层14、公共电极层15以及第一配向膜层16。
图4是本发明的实施例中涉及的阵列基板的侧视图，图5为一个单元像素区域的俯视示意图。其中，阵列基板2包括：第二基板20、TFT层25、公共电极线层21、绝缘保护层22、像素电极层23以及第二配向膜层24。
其中，第二基板20可例如是透明的玻璃基板或者树脂基板，但本发明并不限制于此。
其中，在TFT层25中定义有多条扫描线220和多条数据线230相互绝 缘交错，以限定出多个第二像素区域PX2。当阵列基板2与彩膜基板1对盒组装之后，第二像素区域PX2和第一像素区域PX1一一对应；
在TFT层25的每一第二像素区域PX2中至少设置有一个开关单元240，所述开关单元240包括诸如栅极、栅极绝缘层、有源层、源极和漏极，其中源极和漏极分别与半有源层的两端相接触。
绝缘保护层22形成于所述TFT层25之上，所述绝缘保护层22上对应所述漏极的上方设有过孔。
像素电极层23和公共电极线层21形成于绝缘保护层22上，其中像素电极23通过过孔与所述TFT层的漏极相接触。其中，公共电极线层21中布置有公共电极线，所述公共电极线为网状结构，其与像素电极层23相互绝缘。
像素电极层23可以采用诸如铟锡氧化物、铟锌氧化物、铝锡氧化物、铝锌氧化物、铟锗锌氧化物中的一种或多种制成，但本发明并不限制于此。
第二配向膜层24形成于所述像素电极23、公共电极线层21和绝缘保护层22上。作为本发明的一种实施方式，第二配向膜层24由聚酰亚胺(PI)形成，但本发明并不限制于此。
如图6所示，是本发明提供的一种液晶显示面板配向方法的一个实施例的结构示意图。一并参照前述图1到图5所示，在该实施例中，所述方法包括如下步骤：
步骤S10，将彩膜基板1、阵列基板2与液晶层3组立为一液晶显示面板；
具体地，提供彩膜基板1，在所述彩膜基板上至少形成有公共电极层15以及第一配向膜层16，其中，所述彩膜基板1的公共电极层15为层状结构；在一个实施例中，可参照前述对图2和图3的描述，但本发明并不限制于此；
提供一阵列基板2，在所述阵列基板2上至少形成有公共电极线层21、像素电极层23以及第二配向膜层24；其中，所述阵列基板2的公共电极线为网状结构；在一个实施例中，可以参照前述对图4和图5的描述，但本发明并不限制于此；
在所述彩膜基板1、阵列基板2上涂布胶框4；
在所述胶框4围成的区域内填充液晶分子形成液晶层3；
将所述彩膜基板1、阵列基板2进行对组成盒，可以理解的是，在一个例子中，在所述彩膜基板1与阵列基板2对组成盒后，所述阵列基板1的公共电极线所覆盖的区域与所述彩膜基板2的公共电极层重叠的面积大于或等于所述液晶层的面积。
步骤S11，向阵列基板2的公共电极线层21施加第一配向电压，向彩膜基板1的公共电极层15施加第二配向电压，所述第一配向电压与所述第二配向电压之间存在预定电压差，其中预定电压差根据具体情况选定，如10V等；
步骤S12，通过所述预定电压差对所述液晶显示面板的液晶层3进行配向，使得所述液晶层3中的液晶分子按照预设倾角排列；在一个实施例中，所述步骤S12具体包括：
通过所述预定电压差在所述彩膜基板1和所述阵列基板2之间提供垂直电场，使所述液晶层3的液晶分子的预倾角达到0度。
步骤S13，采用紫外线照射所述液晶层3，使其固化。
可以理解的是，在配向时，像素电极层23不接入任何信号，并且在完成所述配向过程之后，包括以下步骤：
去除对所述阵列基板2的公共电极线21施加的第一配向电压，以及去除对彩膜基板1的公共电极层15施加的第二配向电压。
实施本发明实施例，具有如下有益效果：
本发明提供一种液晶显示面板的配向方法，在配向时，通过利用阵列基板的公共电极线层与所述彩膜基板的公共电极层之间的压差对面板内液晶层进行配向。由于阵列基板的公共电极线层为网络状，所述彩膜基板的公共电极层为层状结构，两者均是整体结构，其可以提高配向效果，不再象现有技术中一样依赖数据线，即使存在像素电极中某些数据线出现损坏时，依然可以完成液晶的配向，从而提高产品良率。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括 一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个......”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上所述仅是本申请的具体实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本申请的保护范围。

Claims (10)

  1. 一种液晶显示面板的配向方法，其中，所述方法包括以下步骤：
    将彩膜基板、阵列基板与液晶层组立为一液晶显示面板；
    向阵列基板的公共电极线施加第一配向电压，向彩膜基板的公共电极层施加第二配向电压，所述第一配向电压与所述第二配向电压之间存在预定电压差；
    通过所述预定电压差对所述液晶显示面板的液晶层进行配向，使得所述液晶层中的液晶分子按照预设倾角排列；
    采用紫外线照射所述液晶层。
  2. 如权利要求1所述的方法，其中，所述将彩膜基板、阵列基板与液晶层组立为一显示面板的步骤具体为：
    提供一彩膜基板，在所述彩膜基板上至少形成有公共电极层以及第一配向膜层；
    提供一阵列基板，在所述阵列基板上至少形成有公共电极线层、像素电极层以及第二配向膜层，所述公共电极线层上布置有公共电极线；
    在所述彩膜基板、阵列基板上涂布胶框；
    在所述胶框围成的区域内填充分子形成液晶层；
    将所述彩膜基板、阵列基板进行对组成盒。
  3. 如权利要求2所述方法，其中，所述阵列基板的公共电极线为网状结构，所述彩膜基板的公共电极层为层状结构。
  4. 如权利要求3所述的方法，其中，在所述彩膜基板与阵列基板对组成盒后，所述阵列基板的公共电极线所覆盖的区域与所述彩膜基板的公共电极层重叠的面积大于或等于所述液晶层的面积。
  5. 如权利要求4所述的方法，其中，通过所述预定电压差对所述液晶显示面板的液晶层进行配向，使得所述液晶层中的液晶分子按照预设倾角排列 的步骤包括：
    通过所述预定电压差在所述彩膜基板和所述阵列基板之间提供垂直电场，使所述液晶层的液晶分子的预倾角达到0度。
  6. 根据权利要求5所述的方法，其中，在完成所述配向之后，包括以下步骤：
    去除对所述阵列基板的公共电极线施加的第一配向电压，以及去除对彩膜基板的公共电极层施加的第二配向电压。
  7. 一种液晶显示面板的配向方法，其中，所述方法包括以下步骤：
    将彩膜基板、阵列基板与液晶层组立为一液晶显示面板；
    向阵列基板的公共电极线施加第一配向电压，向彩膜基板的公共电极层施加第二配向电压，所述第一配向电压与所述第二配向电压之间存在预定电压差；其中，所述阵列基板的公共电极线为网状结构，所述彩膜基板的公共电极层为层状结构；
    通过所述预定电压差对所述液晶显示面板的液晶层进行配向，使得所述液晶层中的液晶分子按照预设倾角排列；
    采用紫外线照射所述液晶层。
  8. 如权利要求7所述的方法，其中，在所述彩膜基板与阵列基板对组成盒后，所述阵列基板的公共电极线所覆盖的区域与所述彩膜基板的公共电极层重叠的面积大于或等于所述液晶层的面积。
  9. 如权利要求8所述的方法，其中，通过所述预定电压差对所述液晶显示面板的液晶层进行配向，使得所述液晶层中的液晶分子按照预设倾角排列的步骤包括：
    通过所述预定电压差在所述彩膜基板和所述阵列基板之间提供垂直电场，使所述液晶层的液晶分子的预倾角达到0度。
  10. 根据权利要求9所述的方法，其中，在完成所述配向之后，包括以下步骤：
    去除对所述阵列基板的公共电极线施加的第一配向电压，以及去除对彩膜基板的公共电极层施加的第二配向电压。
PCT/CN2018/071380 2017-12-29 2018-01-04 一种液晶显示面板的配向方法 Ceased WO2019127635A1 (zh)

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