WO2014124573A1 - 液晶面板及显示装置 - Google Patents

液晶面板及显示装置 Download PDF

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Publication number
WO2014124573A1
WO2014124573A1 PCT/CN2013/074490 CN2013074490W WO2014124573A1 WO 2014124573 A1 WO2014124573 A1 WO 2014124573A1 CN 2013074490 W CN2013074490 W CN 2013074490W WO 2014124573 A1 WO2014124573 A1 WO 2014124573A1
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WIPO (PCT)
Prior art keywords
liquid crystal
spacer
crystal panel
village
array substrate
Prior art date
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Ceased
Application number
PCT/CN2013/074490
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English (en)
French (fr)
Inventor
惠大胜
尹傛俊
涂志中
申莹
郭磊
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BOE Technology Group Co Ltd
Hefei BOE Optoelectronics Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Hefei BOE Optoelectronics Technology Co Ltd
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Priority to US14/348,694 priority Critical patent/US9304360B2/en
Publication of WO2014124573A1 publication Critical patent/WO2014124573A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02F1/1339—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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
    • 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
    • G02F1/136277—Active matrix addressed cells formed on a semiconductor substrate, e.g. of silicon
    • 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
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/50—Protective arrangements
    • G02F2201/503—Arrangements improving the resistance to shock

Definitions

  • Liquid crystal panel and display device Liquid crystal panel and display device
  • Embodiments of the present invention relate to a liquid crystal panel and a display device. Background technique
  • a conventional liquid crystal display device includes an opposite substrate 101 and an array substrate 102 which are joined together by a sealant 103 to form a liquid crystal cell in which a liquid crystal cell 104 is filled.
  • the spacers 106 are used to maintain the gap of the liquid crystal cell, and are generally formed on the opposite substrate 101.
  • the spacers are generally classified into a primary spacer 106 and a backup spacer 107.
  • the main spacer 106 after the cartridge is in contact with the village pad 105 on the array substrate 102.
  • the backup spacer 107 serves as a backup spacer for assisting the main spacer 106 to maintain the gap of the liquid crystal cell when the liquid crystal display device is strongly squeezed.
  • the contact density of the main spacers 106 and the array substrate 102 per unit area is a very important parameter, especially an IPS (In Plane Switch) mode liquid crystal display device which is sensitive to Mura failure (Mura is caused by uneven brightness in a certain area). Picture quality defects). Too large or too small a contact density will have a negative impact on LC Margin (LC Margin is the range of liquid crystal that ensures no gravity of the liquid crystal at high temperatures and no bubbles occur at low temperatures) and picture quality.
  • IPS In Plane Switch
  • a liquid crystal panel includes an array substrate, a counter substrate, and a liquid crystal layer between the array substrate and the opposite substrate.
  • a spacer is disposed on the opposite substrate, and a village mat is disposed on the array substrate.
  • Each of the spacers corresponds to a plurality of village mats and has different contact areas with the plurality of village mats.
  • a display device is provided. The display device includes the above liquid crystal panel.
  • FIG. 1 is a schematic structural view of a conventional liquid crystal panel
  • FIG. 2 is a schematic view showing a defect of a liquid crystal panel when a contact density between a spacer and a village mat is too small in a conventional liquid crystal panel;
  • FIG. 3 is a schematic view showing defects in the liquid crystal panel when the contact density between the spacer and the village mat is too large in the conventional liquid crystal panel;
  • FIG. 4 is a schematic structural view of a liquid crystal panel according to an embodiment of the present invention.
  • Figure 5 is a schematic structural view of a spacer according to an embodiment of the present invention.
  • FIGS. 6a-6b are schematic views of a spacer mask displacement process in accordance with an embodiment of the present invention.
  • Figs. 7a-7b are schematic diagrams of a spacer mask flipping process in accordance with an embodiment of the present invention. detailed description
  • the liquid crystal panel includes an array substrate, a counter substrate, and a liquid crystal layer between the array substrate and the opposite substrate.
  • a spacer is provided on the opposite substrate, and a village mat is provided on the array substrate.
  • Each of the spacers corresponds to a plurality of village mats and has different contact areas with the plurality of village mats. By selecting the spacers to contact different village mats, different contact areas can be achieved, thereby changing the contact density of the spacers with the village mat.
  • the liquid crystal panel of the present embodiment will be described in detail below with reference to FIGS. 4 and 5.
  • Figure 4 As shown, the liquid crystal panel of the present embodiment includes the array substrate 41 and the opposite substrate 43. The array substrate 41 and the opposite substrate 43 are joined together by a sealant 44 to form a liquid crystal cell. The liquid crystal cell is filled with a liquid crystal layer 42.
  • the liquid crystal panel further includes a spacer 431 disposed on the opposite substrate 43 and a village pad 411 disposed on the array substrate 41.
  • the spacer 431 abuts against the village pad 411 to maintain the gap of the liquid crystal cell.
  • One of the spacers 431 corresponds to a plurality of village mats 411. For example, as shown in Fig. 4, one spacer 431 corresponds to three village mats 411.
  • the cross-sectional areas of the plurality of village mats 411 are different from each other, and the cross-sectional area of each of the plurality of village mats 411 is smaller than the top area of the corresponding spacers 431.
  • the cross-sectional area of the village mat 411 refers to the area of the surface in contact with the spacer 431, and the top area of the spacer 431 is the area of the surface of the spacer 431 which is in contact with the village mat 411.
  • the spacer will have a different contact area than the corresponding plurality of pads.
  • the village mat 411 is a cylinder.
  • the village pad is located in the upper layer of the gate layer of the array substrate.
  • the village mat is disposed in the same layer as the active layer, and is formed of the same material as the active layer, such as a-Si or an oxide semiconductor material.
  • the spacing between the village mats 411 is determined based on the product parameters and the distance the mask can be displaced.
  • the change in contact density of the spacers with the above-described village mat can be achieved by a spacer mask displacement process or a spacer mask flip process without changing the structure of the spacer mask.
  • Figures 6a-6b show schematic diagrams of the spacer mask displacement process.
  • the spacer mask 62 can be displaced by a corresponding distance as needed, and then the spacer 611 can be realized according to the normal process flow.
  • the displacement is such that the spacer 611 is in contact with another corresponding mat to achieve the contact density.
  • Figures 7a-7b show schematic diagrams of the spacer mask flipping process.
  • the above array substrate can be fabricated in accordance with a conventional process.
  • the contact density of the spacer and the village mat can be changed without replacing the mask, which not only saves the cost of the mask, but also greatly reduces the influence of the mask change on the development schedule.
  • the spacer is formed on the opposite substrate and the pad is formed on the array substrate, embodiments of the present invention are not limited thereto.
  • a spacer may be formed on the array substrate, and a village pad is formed on the opposite substrate.
  • the embodiment of the present invention is not limited thereto.
  • the village mat can be two or more than three.
  • the village mat is described as a cylinder in this embodiment, the embodiment of the invention is not limited thereto.
  • the village mat may be a rectangular parallelepiped or other columnar body of any shape.
  • FIG. 4 Although a spacer is shown in FIG. 4, embodiments of the present invention are not limited thereto. For example, there may be more than one spacer.
  • the display device includes the above liquid crystal panel.
  • the display device may be any product or component having a display function such as a liquid crystal panel, an electronic paper, an OLED panel, a liquid crystal television, a liquid crystal display, a digital photo frame, a mobile phone, a tablet computer, or the like.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Liquid Crystal (AREA)

Abstract

一种液晶面板和显示装置。液晶面板包括阵列基板（41）、对向基板（43）以及位于阵列基板（41）与对向基板（43）之间的液晶层（42）。在对向基板（43）上设有隔垫物（431），在阵列基板（41）上设有衬垫（411）。每一个隔垫物（431）对应多个衬垫（411）并与多个衬垫（411）具有不同的接触面积。

Description

液晶面板及显示装置 技术领域
本发明的实施例涉及液晶面板及显示装置。 背景技术
如图 1所示， 传统的液晶显示装置包括对向基板 101及阵列基板 102, 二者通过密封胶 103接合在一起以形成液晶盒， 在液晶盒中充满液晶 104。 隔垫物 106用来维持液晶盒的间隙， 一般做在对向基板 101上。
隔垫物一般分为主要隔垫物 106和备用隔垫物 107两种。 对盒后主要隔 垫物 106与阵列基板 102上的村垫 105接触。 备用隔垫物 107作为备用的隔 垫物， 在液晶显示装置受到大力挤压的时候辅助主要隔垫物 106来维持液晶 盒的间隙。
单位面积内主要隔垫物 106与阵列基板 102的接触密度是非常重要的参 数， 尤其是对 Mura不良比较敏感的 IPS(In Plane Switch)模式液晶显示装置 ( Mura为由于某一区域亮度不均造成的画面品质缺陷）。接触密度过大或过 小都会对 LC Margin ( LC Margin是指保证液晶屏高温下无重力 Mura发生且 低温下无气泡发生的液晶量的范围）及画面品质产生负面影响。
若隔垫物与阵列基板上的村垫接触密度过小， 在高温时由于隔垫物支撑 强度不足， 液晶由于重力作用聚集在液晶屏下侧， 形成重力 Mura, 如图 2 所示。 若隔垫物与村垫接触密度过大， 在低温时由于液晶收缩， 液晶体积减 小， 但由于隔垫物的支撑强度过大使得盒间隙没有相应降低， 而在液晶屏角 落处出现气泡， 如图 3所示。 发明内容
根据本发明的一个实施例， 提供一种液晶面板。 该液晶面板包括阵列基 板、 对向基板以及位于阵列基板与对向基板之间的液晶层。 在所述对向基板 上设有隔垫物， 在所述阵列基板上设有村垫。 每一个隔垫物对应多个村垫并 与该多个村垫具有不同的接触面积。 根据本发明的另一个实施例， 提供一种显示装置。 该显示装置包括上述 的液晶面板。 附图说明
为了更清楚地说明本发明实施例的技术方案， 下面将对实施例的附图作 筒单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例， 而非对本发明的限制。
图 1是传统液晶面板的结构示意图；
图 2是传统液晶面板中隔垫物与村垫接触密度过小时液晶面板出现的缺 陷的示意图；
图 3是传统液晶面板中隔垫物与村垫接触密度过大时液晶面板出现缺陷 的示意图；
图 4是根据本发明实施例的液晶面板的结构示意图；
图 5是根据本发明实施例的隔垫物的结构示意图；
图 6a-图 6b是根据本发明隔实施例的垫物掩模板位移工艺的原理图； 图 7a-图 7b是根据本发明实施例的隔垫物掩模板翻转工艺的原理图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚， 下面将结合本发 明实施例的附图，对本发明实施例的技术方案进行清楚、 完整地描述。显然， 所描述的实施例是本发明的一部分实施例， 而不是全部的实施例。 基于所描 述的本发明的实施例， 本领域普通技术人员在无需创造性劳动的前提下所获 得的所有其他实施例， 都属于本发明保护的范围。
实施例 1
本实施例提供一种液晶面板。 该液晶面板包括阵列基板、 对向基板以及 位于阵列基板和对向基板之间的液晶层。 在该对向基板上设置有隔垫物， 在 该阵列基板上设置有村垫。 每一个隔垫物对应多个村垫并与该多个村垫具有 不同的接触面积。 通过选择隔垫物与不同的村垫接触， 能够实现不同接触面 积， 从而能够改变隔垫物与村垫的接触密度。
下面将结合图 4和图 5对本实施例的液晶面板进行详细的描述。 如图 4 所示， 本实施例的液晶面板包括阵列基板 41和对向基板 43。 所述阵列基板 41和所述对向基板 43通过密封胶 44接合在一起以形成液晶盒。液晶盒中填 充有液晶层 42。
该液晶面板还包括设置在所述对向基板 43上的隔垫物 431和设置在所述 阵列基板 41上的村垫 411。 当阵列基板 41与对向基板 43彼此接合形成液晶 盒时， 隔垫物 431抵靠在村垫 411上以维持液晶盒的间隙。
一个所述隔垫物 431对应多个村垫 411。 例如， 如图 4所示， 一个隔垫 物 431对应三个村垫 411。
如图 4所示，该多个村垫 411的截面面积彼此不同，并且该多个村垫 411 的每一个的截面面积小于所对应的隔垫物 431的顶部面积。 这里， 村垫 411 的截面面积是指与隔垫物 431接触的表面的面积， 隔垫物 431的顶部面积是 隔垫物 431与村垫 411接触的表面的面积。 这样， 隔垫物与所对应的多个村 垫将具有不同的接触面积。
例如， 所述村垫 411为圓柱体。 例如， 村垫位于所述阵列基板的栅极层 的上层中。 例如，村垫与有源层同层设置， 并且由与有源层相同的材料形成， 诸如 a-Si或氧化物半导体材料。
例如，村垫 411之间的间距根据产品参数及掩模板可位移的距离来确定。 例如， 可以通过隔垫物掩模板位移工艺或隔垫物掩模板翻转工艺来实现 上述隔垫物与上述村垫的接触密度的改变，而无需改变隔垫物掩模板的结构。
图 6a-图 6b示出了隔垫物掩模板位移工艺的原理图。 当发现隔垫物与其 所对应的一个村垫相接触时难以获得所需的接触密度， 可根据需要将隔垫物 掩模板 62位移相应的距离，再按照正常工艺流程即可实现隔垫物 611的位移， 从而使隔垫物 611与其所对应的另一个村垫相接触以实现所述接触密度。
图 7a-图 7b示出了隔垫物掩模板翻转工艺的原理图。 当发现隔垫物与其 所对应的一个村垫相接触时难以获得所需的接触密度， 可根据需要将隔垫物 掩模板 72旋转 180度，再按照正常工艺流程即可实现隔垫物 711的位移，从 而使隔垫物 711与其所对应的另一个村垫相接触以实现所需的接触密度。
例如， 上述阵列基板可以按照传统工艺来制作。
在本实施例中， 不需要更换掩模板即可改变隔垫物与村垫的接触密度， 不仅节省了掩模板费用， 而且大大减小了掩膜版变更对开发日程的影响。 尽管在该实施例中描述了隔垫物形成在对向基板上而村垫形成在阵列基 板上，但是本发明的实施例不限于此。 例如， 隔垫物可以形成在阵列基板上， 而村垫形成在对向基板上。
尽管在该实施例中描述了村垫的数量为三个， 但是本发明的实施例不限 于此。 例如， 村垫可以为两个或多于三个。
尽管在该实施例中描述了村垫为圓柱体,但是本发明的实施例不限于此。 例如， 该村垫可以为长方体或其他任意形状的柱状体。
尽管在附图 4中示出了一个隔垫物， 但是本发明的实施例不限于此。 例 如， 给隔垫物可以为多个。
实施例 2
本实施例提供一种显示装置。 该显示装置包括上述的液晶面板。 例如， 该显示装置可以为液晶面板、 电子纸、 OLED面板、 液晶电视、 液晶显示器、 数码相框、 手机、 平板电脑等具有显示功能的任何产品或部件。
以上所述仅是本发明的示范性实施方式， 而非用于限制本发明的保护范 围， 本发明的保护范围由所附的权利要求确定。

Claims

权利要求书
1、一种液晶面板， 包括阵列基板、对向基板以及位于阵列基板与对向基 板之间的液晶层， 其中在所述对向基板上设有隔垫物， 在所述阵列基板上设 有村垫， 每一个隔垫物对应多个村垫并与该多个村垫具有不同的接触面积。
2、如权利要求 1所述的液晶面板，其中所述多个村垫具有彼此不同的截 面面积，并且所述隔垫物的顶部面积大于所述多个 垫的每一个的截面面积。
3、 如权利要求 1所述的液晶面板， 其中所述村垫的数量为至少两个。
4、如权利要求 1所述的液晶面板，其中所述村垫位于所述阵列基板的栅 极层的上层中。
5、 如权利要求 4所述的液晶面板， 其中所述村垫与有源层同层设置。
6、如权利要求 5所述的液晶面板，其中所述村垫由与有源层相同的材料 形成。
7、 如权利要求 1所述的液晶面板， 其中所述村垫为柱状体。
8、如权利要求 1所述的液晶面板，其中所述阵列基板和所述对向基板通 过密封胶接合在一起。
9、一种显示装置， 其中该显示装置包括权利要求 1-6任意一项所述的液 晶面板。
PCT/CN2013/074490 2013-02-18 2013-04-22 液晶面板及显示装置 Ceased WO2014124573A1 (zh)

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