WO2013131292A1 - 一种液晶显示面板及液晶显示装置 - Google Patents

一种液晶显示面板及液晶显示装置 Download PDF

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Publication number
WO2013131292A1
WO2013131292A1 PCT/CN2012/073021 CN2012073021W WO2013131292A1 WO 2013131292 A1 WO2013131292 A1 WO 2013131292A1 CN 2012073021 W CN2012073021 W CN 2012073021W WO 2013131292 A1 WO2013131292 A1 WO 2013131292A1
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Prior art keywords
layer
liquid crystal
crystal display
display panel
retaining wall
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PCT/CN2012/073021
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English (en)
French (fr)
Inventor
唐国富
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深圳市华星光电技术有限公司
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Priority to US13/500,821 priority Critical patent/US20130235310A1/en
Publication of WO2013131292A1 publication Critical patent/WO2013131292A1/zh

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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1341Filling or closing of cells

Definitions

  • Liquid crystal display panel and liquid crystal display device Liquid crystal display panel and liquid crystal display device
  • the present invention relates to the field of liquid crystal display, and more particularly to a liquid crystal display panel and a liquid crystal display device.
  • the liquid crystal display panel mainly includes a color filter glass substrate and an array glass substrate provided on the box, and two substrates.
  • the liquid crystal layer between.
  • a transparent conductive glass layer that is, an ITO layer 4 (Indium Tin Oxide, ITO) is coated on the color filter glass substrate 1, and then a PI layer is disposed on the ruthenium layer.
  • the PI layer 3 is used for alignment of liquid crystals, giving liquid crystal molecules an initial angle, and the PI substrate 3 having the same function is also provided on the array substrate 2.
  • the PI layer manufacturing process generally adopts a liquid flow mode, which is difficult to control in the end region of the PI liquid, in order to ensure a complete liquid crystal alignment at the edge of the visible region, and to avoid poor taste at the edge of the visible region, conventionally viewing the edge of the region to the PI layer
  • the distance D1 at the end is designed to be large. Supporting and adhering between the upper and lower substrates through the frame glue, the width of the frame glue D3 is generally uncompressed space. If the frame glue covers the PI layer, the area of the frame adhesive adheres to the glass is reduced, affecting the adhesion force, and there will be glass. The risk of poor stability, so that the distance D2 from the end of the PI layer to the sealant cannot be further reduced. Due to the limitations of the above conventional processes, the distance from the visible area to the edge of the glass substrate cannot be further compressed, so that a narrower bezel design cannot be achieved.
  • the technical problem to be solved by the present invention is to break through the limitations of the conventional process, and to provide a liquid crystal display panel and a liquid crystal display device with a narrow bezel.
  • a liquid crystal display panel comprising: a glass substrate, a PI layer is coated on the glass substrate, and a densely distributed and independent wall segment is disposed at an end of the PI layer, and the adjacent block
  • the spacing of the wall segments is less than or equal to the thickness of the PI layer, and the height of the retaining wall segments is greater than the thickness of the PI layer.
  • the cross-sectional shape of the retaining wall segment is rectangular, trapezoidal, semi-circular or inverted U-shaped, the glass substrate is a color filter substrate, the ITO layer is coated on the color filter substrate, and the PI layer is laid on the ITO layer.
  • a liquid crystal display panel comprising a glass substrate on which a PI layer is applied, and a densely distributed, mutually independent wall segment is provided at the end of the PI layer.
  • the spacing of the adjacent retaining wall segments is less than or equal to the thickness of the PI layer, and a significant end control effect can be obtained.
  • the height of the retaining wall segment is greater than the thickness of the PI layer, and a better end control effect can be obtained.
  • the height of the retaining wall segment is less than or equal to the thickness of the PI layer, and a better end control effect can also be obtained.
  • the cross-sectional shape of the retaining wall segment is rectangular, trapezoidal, semi-circular or inverted U-shaped.
  • the glass substrate is a color filter substrate
  • an ITO layer is coated on the color filter substrate
  • a PI layer is deposited on the ITO layer.
  • the glass substrate is an array substrate.
  • a liquid crystal display device comprising: a liquid crystal display panel, the liquid crystal display panel includes a glass substrate, a PI layer is coated on the glass substrate, and a dense distribution is arranged at the end of the PI layer Independent wall segments.
  • the spacing of the adjacent retaining wall segments is less than or equal to the thickness of the PI layer.
  • the height of the retaining wall segment is greater than the thickness of the PI layer.
  • the height of the retaining wall segment is less than or equal to the thickness of the PI layer.
  • the cross-sectional shape of the retaining wall segment is rectangular, trapezoidal, semi-circular or inverted U-shaped.
  • the glass substrate is a color filter substrate
  • an ITO layer is coated on the color filter substrate
  • a PI layer is deposited on the ITO layer.
  • the glass substrate is an array substrate.
  • the beneficial effects of the present invention are as follows:
  • the principle of the densely distributed and independent wall segments of the present invention is: When the PI liquid flows, the flow in front of the contact wall segment is governed by the internal force of the liquid, when the PI liquid contacts the block After the wall section, according to the principle of surface tension, due to the small interval between the two retaining wall sections, the PI liquid enters The liquid entering the interval is less, and the internal force of the liquid is lowered. When the internal force of the liquid is equal to the external air pressure, the liquid stops flowing, so that the distance between the visible area and the PI end can be reduced.
  • the invention controls the distance of the PI liquid end by setting densely distributed and independent wall segments.
  • the distance from the PI end to the sealant can also be reduced, because the PI end has been precisely controlled, the frame
  • the glue can be applied next to the end of the PI.
  • the frame glue and the retaining wall segment may interfere, due to the gap between the retaining wall segments, a part of the sealant is still in contact with the glass, so the adhesion is not significantly reduced.
  • the narrow-edge design can be achieved by shortening the distance between the visible area and the PI end, the distance between the PI end and the sealant.
  • FIG. 1 is a schematic structural view of a liquid crystal display panel in the prior art
  • FIG. 2 is a schematic structural view of an embodiment of a liquid crystal display panel of the present invention.
  • FIG. 3 is a schematic structural view of a retaining wall section having a rectangular cross section according to the present invention.
  • Figure 4 is a schematic view showing the structure of a retaining wall section having an inverted U-shaped cross section of the present invention.
  • the present invention discloses a liquid crystal display device, including a liquid crystal display panel.
  • the liquid crystal display panel includes two upper and lower glass substrates, and one is a color filter substrate. 1 , the OLED layer 4 is applied on the color filter substrate 1 , and the PI layer 3 is applied on the ITO layer 4 , one is the array substrate 2 , and the PI layer 3 is coated on the array substrate 2 , and the PI layer 3 is densely distributed at the end of the PI layer 3 .
  • the mutually independent wall segments 5, in this embodiment, the retaining wall segments 5 are arranged in a straight line.
  • the principle of the densely distributed segmented retaining wall 5 of the present invention acts as follows: When the PI liquid flows, the flow in front of the contact retaining wall segment 5 is governed by the internal force of the liquid, and when the PI liquid contacts the retaining wall segment 5, the surface is The tension principle, because the interval between the two retaining wall segments 5 is small, the PI liquid enters the interval with less liquid, The internal force of the liquid is lowered. When the internal force of the liquid is equal to the external air pressure, the liquid stops flowing, so that the distance D1 between the visible region and the PI end can be reduced.
  • the invention controls the distance of the PI liquid end by setting the densely distributed and independent wall segments 5, and the distance from the PI end to the sealant D2 can also be reduced when the sealant 6 liquid is applied, because the PI end has been accurately Control, the sealant 6 can be coated next to the PI end.
  • the sealant 6 and the retaining wall segment 5 may interfere, there is still a part of the sealant 6 in contact with the glass substrate due to the gap between the retaining wall segments 5. Therefore, the adhesion is not significantly lowered, and the narrow-edge design can be realized by shortening the distance D1 between the visible region and the PI end, the distance D2 between the PI end and the sealant.
  • the cross-sectional shape of the retaining wall segment 5 is rectangular.
  • the retaining wall segment 5 may also adopt other cross-sectional shapes, such as an inverted U shape in FIG. 4, or a trapezoidal shape, a semicircular shape, or the like.
  • the height of the retaining wall segment 5 when the height of the retaining wall segment 5 is less than or equal to the thickness of the PI layer 3, an obvious end control effect can be obtained; the spacing of the adjacent retaining wall segments 5 is less than or equal to the thickness of the PI layer 3, The height of the retaining wall section 5 is greater than the thickness of the PI layer 3, and a better end control effect can be obtained.
  • the retaining wall segment of the present invention can be disposed on the glass substrate by: coating a photoresist layer on the glass substrate; placing the glass substrate into the oven and pre-baking the photoresist layer to make the photoresist The upper surface of the layer is cured; the photoresist layer on which the upper surface has been cured is exposed by a photomask; and the photoresist layer is finally developed and etched.
  • the photoresist layer comprises a UV photopolymer and a thermosetting polymer.
  • the retaining wall segments of the present invention are not limited to the end control of PI liquids, but can also be used for film end control made by liquid coating flow.

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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)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Abstract

一种液晶显示面板及液晶显示装置。所述液晶显示面板包括玻璃基板,其中在玻璃基板上敷设有PI层(3),在所述PI层(3)的末端设有密集分布的、相互独立的挡墙段(5)。该液晶显示面板及液晶显示装置通过设置密集分布的、相互独立的挡墙段(5)来控制PI液体末端到可视区域的距离(D1),并且在框胶(6)液体涂布时,还可以缩小PI末端到框胶(6)的距离(D2)。由于缩短了可视区域与PI末端的距离(D1)、PI末端和框胶(6)的距离(D2),从而可以实现窄边设计。

Description

一种液晶显示面板及液晶显示装置
【技术领域】
本发明属于液晶显示领域, 更具体的说, 涉及一种液晶显示面板及液晶显 示装置。
【背景技术】
液晶显示器因其功耗低、 制作成本低和无辐射等优点, 近年来得到了广泛 的应用, 其中液晶显示面板主要包括对盒设置的彩色滤光玻璃基板和阵列玻璃 基板, 以及在两个基板之间的液晶层。 如图 1所示, 在彩色滤光玻璃基板 1上 敷有一层透明导电玻璃层,即 ITO层 4(氧化铟锡, Indium Tin Oxide, 筒称 ITO ), 然后在 ΙΤΟ层上设置一层 PI层 3 (聚酰亚胺), PI层 3用于液晶的配向, 给液 晶分子一初始角度, 另外阵列基板 2上也设置有起同样作用的 PI层 3。 PI层制 造工艺一般采用液体流动方式, 在 PI液体的末端区不易控制, 为保证在可视区 域边缘有完整的液晶配向, 避免可视区域边缘存在品味不良, 常规上可视区域 边缘到 PI层末端的距离 D1设计值较大。 在上下基板之间通过框胶进行支撑和 黏附, 框胶的宽度 D3—般无压缩的空间, 若框胶覆盖于 PI层上时, 框胶黏附 玻璃的面积降低, 影响黏附力, 会存在玻璃稳定性差的风险, 从而使 PI层末端 到框胶的距离 D2无法进一步缩小。 由于上述传统工艺的限制, 无法进一步压缩 可视区域到玻璃基板边缘的距离, 从而无法实现更窄的边框设计。
【发明内容】
本发明所要解决的技术问题是突破传统工艺的限制, 提供一种窄边框的液 晶显示面板和液晶显示装置。
本发明的技术方案为: 一种液晶显示面板, 包括: 玻璃基板, 玻璃基板上 敷有 PI层, 在所述 PI层的末端设有密集分布的、 相互独立的挡墙段, 所述相邻 挡墙段的间距小于或等于 PI层的厚度, 所述挡墙段的高度大于 PI层的厚度, 所 述挡墙段的截面形状为矩形、 梯形、 半圓形或倒 U形, 所述玻璃基板为彩色滤 光基板, 彩色滤光基板上敷有 ITO层, PI层敷设于 ITO层上。
本发明的另一种技术方案为: 一种液晶显示面板, 包括玻璃基板, 玻璃基 板上敷有 PI层, 在所述 PI层的末端设有密集分布的、 相互独立的挡墙段。
优选的, 所述相邻挡墙段的间距小于或等于 PI层的厚度, 能取得明显的末 端控制效果。
优选的,所述挡墙段的高度大于 PI层的厚度,可获得更好的末端控制效果。 优选的, 所述挡墙段的高度小于或等于 PI层的厚度, 也能取得较好的末端 控制效果。
优选的, 所述挡墙段的截面形状为矩形、 梯形、 半圓形或倒 U形。
优选的, 所述玻璃基板为彩色滤光基板, 彩色滤光基板上敷有 ITO层, PI 层敷设于 ITO层上。
优选的, 所述玻璃基板为阵列基板。
本发明还公开了另一种技术方案: 一种液晶显示装置, 包括: 液晶显示面 板, 所述液晶显示面板包括玻璃基板, 玻璃基板上敷有 PI层, 在所述 PI层的末 端设有密集分布的、 相互独立的挡墙段。
优选的, 所述相邻挡墙段的间距小于或等于 PI层的厚度。
优选的, 所述挡墙段的高度大于 PI层的厚度。
优选的, 所述挡墙段的高度小于或等于 PI层的厚度。
优选的, 所述挡墙段的截面形状为矩形、 梯形、 半圓形或倒 U形。
优选的, 所述玻璃基板为彩色滤光基板, 彩色滤光基板上敷有 ITO层, PI 层敷设于 ITO层上。
优选的, 所述玻璃基板为阵列基板。
本发明的有益效果为: 本发明密集分布的、 相互独立的挡墙段起作用的原 理为: 当 PI液体流动时, 在接触挡墙段前的流动由液体内力支配, 当 PI液体接 触到挡墙段后, 依据表面张力原理, 由于两挡墙段之间的间隔较小, PI 液体进 入间隔的液体较少, 其液体内力降低, 当液体内力等于外部气压时, 液体停止 流动, 从而可以缩小可视区域与 PI末端的距离。
本发明通过设置密集分布的、 相互独立的挡墙段来控制 PI液体末端距离, 在框胶液体涂布时,还可以缩小 PI末端到框胶的距离, 因为 PI末端已被精确地 控制, 框胶可以紧挨着 PI末端进行涂覆, 虽然框胶与挡墙段有可能干涉, 但由 于挡墙段之间有间隔存在, 仍有一部分框胶与玻璃接触, 因此不会明显降低粘 附力, 由于缩短可视区域与 PI末端的距离、 PI末端和框胶的距离, 从而可以实 现窄边设计。 【附图说明】
图 1是现有技术中液晶显示面板的结构示意图;
图 2是本发明液晶显示面板实施例的结构示意图;
图 3是本发明具有矩形截面的挡墙段结构示意图;
图 4是本发明具有倒 U形截面的挡墙段结构示意图。
其中: 1、 彩色滤光基板; 2、 阵列基板; 3、 PI层; 4、 ITO层; 5、 挡墙段;
6、 框胶。
【具体实施方式】
本发明公开一种液晶显示装置, 包括液晶显示面板, 作为本发明液晶显示 面板的一个实施例, 如图 2和图 3所示, 液晶显示面板包括上下两块玻璃基板, 一是彩色滤光基板 1 , 彩色滤光基板 1上敷有 ITO层 4, PI层 3敷设于 ITO层 4 上, 一是阵列基板 2, 阵列基板 2上敷有 PI层 3, 在所述 PI层 3的末端设有密 集分布的、 互相独立的挡墙段 5, 本实施例中, 挡墙段 5呈直线排列。
本发明密集分布的分段式挡墙 5起作用的原理为: 当 PI液体流动时, 在接 触挡墙段 5前的流动由液体内力支配, 当 PI液体接触到挡墙段 5后, 依据表面 张力原理, 由于两挡墙段 5之间的间隔较小, PI液体进入间隔的液体较少, 其 液体内力降低, 当液体内力等于外部气压时, 液体停止流动, 从而可以缩小可 视区域与 PI末端的距离 Dl。
本发明通过设置密集分布的、相互独立的挡墙段 5来控制 PI液体末端距离, 在框胶 6液体涂布时, 还可以缩小 PI末端到框胶的距离 D2, 因为 PI末端已被 精确地控制, 框胶 6可以紧挨着 PI末端进行涂覆, 虽然框胶 6与挡墙段 5有可 能干涉, 但由于挡墙段 5之间有间隔存在, 仍有一部分框胶 6与玻璃基板接触, 因此不会明显降低粘附力, 由于缩短可视区域与 PI末端的距离 Dl、 PI末端和 框胶的距离 D2, 从而可以实现窄边设计。
本实施例中, 所述挡墙段 5的截面形状为矩形, 当然, 所述挡墙段 5也可 以采用其它的截面形状, 比如图 4中的倒 U形, 或者梯形、 半圓形等。
本发明中, 所述挡墙段 5的高度小于或等于 PI层 3的厚度时, 能取得明显 的末端控制效果; 所述相邻挡墙段 5的间距小于或等于 PI层 3的厚度, 所述挡 墙段 5的高度大于 PI层 3的厚度, 可获得更好的末端控制效果。
本发明所述的挡墙段可以通过以下步骤设置在玻璃基板上: 在玻璃基板上 涂布一光阻层; 将该玻璃基板放入烤箱并对该光阻层进行预烤, 使该光阻层的 上表面固化; 利用光罩对上表面已经固化的光阻层进行曝光; 最后将该光阻层 进行显影以及蚀刻。 本实施例中, 所述光阻层包含 UV光聚合物以及热固聚合 物。
本发明所述的挡墙段不仅仅限于 PI液体的末端控制, 也可以用于通过液体 涂布流动制造的薄膜末端控制。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明, 不 能认定本发明的具体实施只局限于这些说明。 对于本发明所属技术领域的普通 技术人员来说, 在不脱离本发明构思的前提下, 还可以做出若干筒单推演或替 换, 都应当视为属于本发明的保护范围。

Claims

权利要求
1、 一种液晶显示面板, 包括: 玻璃基板, 玻璃基板上敷有 PI层, 在所述 PI层的末端设有密集分布的、 相互独立的挡墙段, 所述相邻挡墙段的间距小于 或等于 PI层的厚度, 所述挡墙段的高度大于 PI层的厚度, 所述挡墙段的截面形 状为矩形、 梯形、 半圓形或倒 U形, 所述玻璃基板为彩色滤光基板, 彩色滤光 基板上敷有 ITO层, PI层敷设于 ITO层上。
2、 一种液晶显示面板, 包括: 玻璃基板, 玻璃基板上敷有 PI层, 在所述 PI层的末端设有密集分布的、 相互独立的挡墙段。
3、 如权利要求 2所述的液晶显示面板, 其中, 所述相邻挡墙段的间距小于 或等于 PI层的厚度。
4、 如权利要求 2 所述的液晶显示面板, 其中, 所述挡墙段的高度大于 PI 层的厚度。
5、 如权利要求 2所述的液晶显示面板, 其中, 所述挡墙段的高度小于或等 于 PI层的厚度。
6、 如权利要求 2所述的液晶显示面板, 其中, 所述挡墙段的截面形状为矩 形、 梯形、 半圓形或倒 U形。
7、 如权利要求 2所述的液晶显示面板, 其中, 所述玻璃基板为彩色滤光基 板, 彩色滤光基板上敷有 ITO层, PI层敷设于 ITO层上。
8、 如权利要求 2所述的液晶显示面板, 其中, 所述玻璃基板为阵列基板。
9、 一种液晶显示装置, 包括: 液晶显示面板, 所述液晶显示面板包括玻璃 基板, 玻璃基板上敷有 PI层, 在所述 PI层的末端设有密集分布的、 相互独立的 挡墙段。
10、 如权利要求 9所述的液晶显示装置, 其中, 所述相邻挡墙段的间距小 于或等于 PI层的厚度。
11、 如权利要求 9所述的液晶显示装置, 其中, 所述挡墙段的高度大于 PI 层的厚度。
12、 如权利要求 9所述的液晶显示装置, 其中, 所述挡墙段的高度小于或 等于 PI层的厚度。
13、 如权利要求 9所述的液晶显示装置, 其中, 所述挡墙段的截面形状为 矩形、 梯形、 半圓形或倒 U形。
14、 如权利要求 9所述的液晶显示装置, 其中, 所述玻璃基板为彩色滤光 基板, 彩色滤光基板上敷有 ITO层, PI层敷设于 ITO层上。
15、 如权利要求 9所述的液晶显示装置, 其中, 所述玻璃基板为阵列基板。
PCT/CN2012/073021 2012-03-06 2012-03-26 一种液晶显示面板及液晶显示装置 WO2013131292A1 (zh)

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CN107632434A (zh) * 2017-09-26 2018-01-26 武汉天马微电子有限公司 显示面板和显示装置
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