WO2013135186A1 - 液晶显示器基板、液晶显示面板以及液晶显示器 - Google Patents

液晶显示器基板、液晶显示面板以及液晶显示器 Download PDF

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Publication number
WO2013135186A1
WO2013135186A1 PCT/CN2013/072640 CN2013072640W WO2013135186A1 WO 2013135186 A1 WO2013135186 A1 WO 2013135186A1 CN 2013072640 W CN2013072640 W CN 2013072640W WO 2013135186 A1 WO2013135186 A1 WO 2013135186A1
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WIPO (PCT)
Prior art keywords
liquid crystal
substrate
crystal display
groove
alignment layer
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PCT/CN2013/072640
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English (en)
French (fr)
Inventor
张洪林
王丹
邵喜斌
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US13/995,653 priority Critical patent/US9523888B2/en
Publication of WO2013135186A1 publication Critical patent/WO2013135186A1/zh

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Classifications

    • 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
    • G02F1/1337Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • 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
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509Filters, e.g. light shielding masks
    • G02F1/133512Light shielding layers, e.g. black matrix
    • 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
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509Filters, e.g. light shielding masks
    • G02F1/133514Colour filters
    • 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
    • G02F1/136Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362Active matrix addressed cells
    • G02F1/1368Active matrix addressed cells in which the switching element is a three-electrode device
    • 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
    • G02F1/133357Planarisation layers
    • 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
    • G02F1/133388Constructional arrangements; Manufacturing methods with constructional differences between the display region and the peripheral region

Definitions

  • Liquid crystal display substrate liquid crystal display panel, and liquid crystal display
  • the present disclosure relates to a liquid crystal display substrate, a liquid crystal display panel, and a liquid crystal display using the liquid crystal display panel. Background technique
  • Liquid crystal displays are currently popular flat panel displays, such as Thin Film Transistor-Liquid Crystal Display (TFT-LCD).
  • the liquid crystal panel is one of the main components in the liquid crystal display.
  • the liquid crystal panel is formed by a color film substrate and an array substrate, and a liquid crystal cell is formed between the color film substrate and the array substrate, and the liquid crystal cell is filled with liquid crystal material.
  • an effective display area 4 and a peripheral area 5 are included in the liquid crystal panel.
  • the color film substrate includes a first base substrate 1, and a multilayer structure of a black matrix 12, a color film layer 13, and a flat protective layer 14 disposed on the first base substrate 1, and a second base substrate included in the array substrate. 2.
  • a multilayer structure such as a TFT switching element disposed on the second base substrate and corresponding electrode lines and scanning lines and an insulating layer 22.
  • a liquid crystal alignment layer is generally disposed on the inner side of the color filter substrate and the array substrate, that is, the first liquid crystal alignment layer 15 is disposed on the protective layer 14 of the color filter substrate.
  • a second liquid crystal alignment layer 23 is provided on the insulating layer 22 of the array substrate.
  • the first liquid crystal alignment layer 15 and the second liquid crystal alignment layer 23 are respectively fabricated on the color filter substrate and the array substrate by an inkjet process, the first liquid crystal alignment layer 15 and the second liquid crystal alignment layer.
  • 23 is made of polyimide (Polyimide).
  • the polyimide liquid is first applied to the substrate by inkjet, and the polyimide liquid coated on the substrate is heated and solidified by a certain time of free diffusion to obtain a uniform thickness. Liquid crystal alignment layer.
  • the prior art system is used.
  • the edge of the liquid crystal alignment layer has an uneven thickness region, and the uneven layer of the alignment layer may cause disorder of the liquid crystal in the liquid crystal cell, thereby causing display of the liquid crystal display.
  • Abnormal In the prior art, in order to avoid such a situation, to ensure the normal display of the effective display area 4, generally, the thickness unevenness area of the first liquid crystal alignment layer 15 and the second liquid crystal alignment layer 23 is isolated and effectively displayed. Means other than the area 4, however, the means also causes the liquid crystal display panel to necessarily have a wider peripheral area. For example, the distance between the outer edge of the liquid crystal alignment layer and the effective display area 4 in the prior art in FIG. 2 generally needs to be reached.
  • One of the objects of the present disclosure is to provide a color filter substrate, an array substrate, a liquid crystal display panel, and a liquid crystal display capable of eliminating uneven regions of the liquid crystal alignment layer, thereby minimizing peripheral design dimensions of the liquid crystal display panel.
  • An embodiment of the present disclosure provides a liquid crystal display substrate, including: a base substrate; a planarization layer disposed on the base substrate; and a liquid crystal alignment layer disposed on the planarization layer, wherein the planarization A groove is provided in the layer near the edge.
  • the liquid crystal alignment layer terminates within the recess.
  • the liquid crystal display substrate includes an effective display area and a peripheral area located at a periphery of the effective display area, a distance between a side of the groove adjacent to the effective display area and the effective display area Less than or equal to 2mm.
  • the groove extends along an edge of the base substrate.
  • a thickness of a portion of the liquid crystal alignment layer in the groove is greater than a thickness of other portions of the liquid crystal alignment layer.
  • the grooves have a depth of 6000A-8000A and a width of lmm-1.5mm.
  • the liquid crystal alignment layer has a thickness in the groove of 300 ⁇ ⁇ - 400 ⁇ ⁇ .
  • the liquid crystal display substrate is a color film substrate, and the color film substrate further includes a black matrix and a color film layer disposed between the planarization layer and the substrate.
  • the liquid crystal display substrate is an array substrate, and the array substrate further includes a thin film transistor (TFT) switching element disposed between the planarization layer and the substrate, and a phase Electrode lines and scan lines.
  • TFT thin film transistor
  • a liquid crystal display panel including a first substrate and a second substrate facing each other and a liquid crystal layer disposed between the first substrate and the second substrate, wherein the Each of the substrate and the second substrate includes: a base substrate; a planarization layer disposed on the base substrate; and a liquid crystal alignment layer disposed on the planarization layer, wherein the planarization layer A groove is provided near the edge.
  • Still another embodiment of the present disclosure provides a liquid crystal display including a liquid crystal display panel including a first substrate and a second substrate facing each other and disposed between the first substrate and the second substrate a liquid crystal layer, wherein each of the first substrate and the second substrate comprises: a base substrate; a planarization layer disposed on the base substrate; and a liquid crystal alignment layer disposed on the planarization layer, Wherein a groove is disposed in the planarization layer near the edge
  • first substrate and the second substrate in the liquid crystal display panel or the liquid crystal display according to the present disclosure may each be a color filter substrate and an array substrate according to any of the embodiments of the present invention.
  • the liquid crystal display panel of the present disclosure utilizes the characteristics of a polyimide liquid for forming a liquid crystal alignment layer, and a groove is formed in a peripheral portion of the liquid crystal display panel and the liquid crystal alignment layer of the array substrate, so that the polyimide is provided.
  • the liquid flows into the groove.
  • the surface tension is released by the groove, thereby effectively reducing (or even eliminating) the shortage of the peripheral region due to the influence of surface tension and viscosity during the free diffusion process of the polyimide liquid in the liquid crystal alignment layer, thereby reducing
  • the liquid crystal alignment layer is in a range in which the thickness of the peripheral region is not uniform, and the peripheral design size of the liquid crystal display panel is minimized.
  • FIG. 1 is a schematic structural view of a liquid crystal display panel in the prior art.
  • Fig. 2 is a partially enlarged schematic view of Fig. 1.
  • Embodiment 3 is a schematic structural view of a liquid crystal display panel in Embodiment 1 of the present disclosure.
  • Figure 4 is a partially enlarged schematic view of Figure 3.
  • FIG. 5 is a schematic structural diagram of a liquid crystal display panel in Embodiment 2 of the present disclosure. detailed description
  • a color film substrate comprising: a first base substrate; and a black matrix, a color film layer and a flat protective layer disposed on the first base substrate, wherein the color film substrate is provided with a first liquid crystal alignment layer Wherein the first protective layer is opened in the flat protective layer in the color filter substrate near the edge.
  • An array substrate comprising: a second base substrate; and a TFT switching element disposed on the second base substrate; and corresponding electrode lines and scan lines and an insulating layer, wherein the array substrate is provided with a second liquid crystal alignment And a second recess is formed in the insulating layer of the array substrate near the edge.
  • a liquid crystal display substrate may include: a base substrate; a planarization layer disposed on the base substrate; and a liquid crystal alignment layer disposed on the planarization layer, wherein A groove is provided in the planarization layer near the edge.
  • a liquid crystal display panel comprising a color filter substrate and an array substrate, wherein the color film substrate adopts the color film substrate described above, and the array substrate uses the above array substrate.
  • the liquid crystal display panel includes a first liquid crystal display substrate and a second liquid crystal display substrate which are opposite to each other, and the liquid crystal layer is interposed between the two liquid crystal display substrates.
  • the first liquid crystal display substrate may be a color film substrate
  • the second liquid crystal display substrate may be an array substrate.
  • the liquid crystal display panel includes an effective display area 4 and a peripheral area 5 located at the periphery of the effective display area 4.
  • the effective display area 4 is an area for displaying an image, and the peripheral area 5 is not used for displaying an image. Since the design of the present disclosure focuses on the design of the peripheral area 5, only the effective display area 4 is shown in the drawing, and the detailed structure of the effective display area 4 is not shown. However, according to the public Functional layer.
  • the color filter substrate and the array substrate may contain only a part of the functional layers in the effective display region 4.
  • the color substrate substrate includes a first base substrate 1, and a black matrix 12, a color film layer 13, and a flat protective layer 14 disposed on the first base substrate 1, in the array substrate.
  • a second base substrate 2 and a first insulating layer and a second insulating layer (collectively referred to as an insulating layer 22) disposed on the second base substrate 2 are included.
  • liquid crystal alignment layers 15 and 23 are provided on the inner side (the side facing each other) of the color filter substrate and the array substrate, respectively.
  • the first liquid crystal alignment layer 15 is provided on the flat protective layer 14 of the color filter substrate, and the second liquid crystal alignment layer 23 is provided on the insulating layer 22 of the array substrate.
  • the sealant 3 in the peripheral region 5 of the liquid crystal display panel.
  • first groove 16 and the second groove 23 may also respectively form a closed rectangular shape as viewed in a plan view.
  • the shapes of the first base substrate 1 and the second base substrate 2 are not limited to a rectangular shape, but may be any suitable shape.
  • first groove 16 and the second groove 24 are equal in length and width, and are aligned in a direction perpendicular to the color filter substrate or the array substrate.
  • the distance between the side of the first groove 16 adjacent to the effective display area 4 and the effective display area 4 is less than or equal to 2 mm
  • the side of the second groove 24 adjacent to the effective display area 4 is The distance between the effective display areas 4 is less than or equal to 2 mm.
  • the position of the first groove 16 and the second groove 24 determines the minimum size of the peripheral design of the liquid crystal display panel. Since the first groove 16 and the second groove 24 can put the surface tension of the polyimide liquid used for the liquid crystal alignment layer, the edge of the liquid crystal alignment layer other than the groove 16 or 24 is close to the edge.
  • the portion can also have a relatively uniform thickness, and therefore, the edge of the liquid crystal alignment layer 15 or 23 can be closer to the effective display region 4.
  • the distance from the edge of the liquid crystal alignment layer to the effective display area 4 is 4.5 mm.
  • the distance from the edge of the liquid crystal alignment layer to the effective display area 4 is less than or equal to 3.5 mm, so that the liquid crystal display panel The minimized size of the perimeter design is further reduced.
  • Fig. 4 is a partially enlarged schematic view of Fig. 3.
  • the structure in the dashed box in Fig. 4 corresponds to the structure in the dashed line in Fig. 3.
  • the structure of the second recess 24 is more clearly shown in Fig. 4, and a second recess 24 is formed in the insulating layer 22 of the array substrate near the edge.
  • the second groove 24 has a width of lmm-1.5 mm and a depth of 600 ⁇ -800 ⁇ ; the width and depth of the first groove 16 are the same as those of the second groove 24.
  • the first liquid crystal alignment layer disposed on the color filter substrate and the second liquid crystal alignment layer disposed on the array substrate have a normal thickness of 800A
  • the thickness of the first liquid crystal alignment layer and the second liquid crystal alignment layer in the first groove and the second groove is 300 ⁇ ⁇ - 400 ⁇ ⁇ .
  • the first liquid crystal alignment layer has a thickness of 800 A - ⁇ ⁇ ⁇ on the flat protective layer 14; and the second liquid crystal alignment layer has a thickness of 800 A - 100 ⁇ ⁇ on the insulating layer 22.
  • the first liquid crystal alignment layer has a thickness of 3000A-4000A in the first recess; and the second liquid crystal alignment layer has a thickness of 300 ⁇ -400 ⁇ in the second recess.
  • the materials of the first base substrate 1 and the second base substrate 2 are generally made of glass, and the materials of the first liquid crystal alignment layer 15 and the second liquid crystal alignment layer 23 are generally made of polyimide, and the material of the insulating layer 22. Silicon nitride is generally used.
  • the sealant 3 may be any suitable sealant, and the sealant 3 functions to bond and seal the first substrate 1 and the second substrate 2 to each other, for example, to bond them.
  • the black matrix 12, the color film layer 13, and the material of the flat protective layer 14 are resin materials.
  • the flat protective layer 14 has two functions: the first is as a flat protective layer, and the second is to planarize the surface of the color filter.
  • a liquid crystal display comprising the above liquid crystal display panel.
  • the liquid has a surface tension and a certain viscosity characteristic, and a groove is formed in a peripheral region of the color filter substrate and the liquid crystal alignment layer of the array substrate in a peripheral region of the liquid crystal display panel, so that the liquid crystal alignment layer is used for fabricating the liquid crystal alignment layer.
  • the polyimide liquid terminates in the recess.
  • the surface tension is released by the groove, thereby effectively reducing (or even eliminating) the shortage of the peripheral region due to the influence of surface tension and viscosity during the free diffusion process of the polyimide liquid in the liquid crystal alignment layer, thereby reducing
  • the liquid crystal alignment layer is in a range in which the thickness of the peripheral region is not uniform, and the peripheral design size of the liquid crystal display panel is minimized.
  • Example 2 The difference between the embodiment and the embodiment 1 is that, according to the setting requirements of the respective functional layers in the design of the liquid crystal panel, in order to avoid the conflict between the position of the liquid crystal alignment layer and the functional layer in the liquid crystal panel, the first set in the color filter substrate in this embodiment
  • the groove 16 and the second groove 24 disposed in the array substrate may be mutually staggered in a direction perpendicular to the color filter substrate or the array substrate, and the length and width of the first groove and the second groove may not Equal, as shown in Figure 5.
  • the liquid crystal display panel includes an effective display area and a peripheral area, and a distance between a side of the first groove adjacent to the effective display area and the effective display area is 2 mm, and a second groove is adjacent to the effective display area. The distance between one side and the effective display area is 2 mm.
  • liquid crystal display comprising the above liquid crystal display panel.
  • liquid crystal display substrate such as a color film substrate and an array substrate
  • first groove 16 and the second groove 24 are shown to have a rectangular sectional shape, but the present disclosure is not limited thereto.
  • the cross-sectional shape of the recess 16 or 24 may be semi-circular, triangular, and any suitable shape.

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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)
  • Spectroscopy & Molecular Physics (AREA)
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Abstract

一种液晶显示基板、液晶显示面板以及液晶显示器,液晶显示基板包括基底基板(1)、设置在基底基板(1)上的平坦化层(14)、以及设置在平坦化层(14)上的液晶配向层(15),液晶显示基板的平坦化层(14)中靠近边缘处设置有一凹槽(16)。

Description

液晶显示器基板、 液晶显示面板以及液晶显示器 技术领域
本公开涉及一种液晶显示器基板、 液晶显示面板以及采用该液晶显示面 板的液晶显示器。 背景技术
液晶显示器是目前日趋普及的平板显示器, 例如薄膜晶体管液晶显示器 ( Thin Film Transistor-Liquid Crystal Display ,筒称 TFT-LCD )就是其中之一。 液晶面板是液晶显示器中的主要部件之一。 液晶面板由彩膜基板和阵列基板 对盒而成, 在彩膜基板和阵列基板之间形成液晶盒, 液晶盒内填充有液晶材 料。 如图 1所示, 在液晶面板中包括有效显示区域 4和外围区域 5。 一般的, 彩膜基板中包括第一基底基板 1、以及设置在第一基底基板 1上的黑矩阵 12、 彩膜层 13和平坦保护层 14等多层结构; 阵列基板中包括第二基底基板 2、 以及设置在第二基底基板上的 TFT开关元件以及相应的电极线和扫描线以 及绝缘层 22等多层结构。为了使液晶分子能在外界电压的驱动下按特定的方 向排列, 一般在彩膜基板和阵列基板的内侧分别设置液晶配向层, 即在彩膜 基板的保护层 14上设置第一液晶配向层 15 ,在阵列基板的绝缘层 22上设置 第二液晶配向层 23。 同时, 在彩膜基板和阵列基板边缘之间的缝隙中, 为将 液晶材料固定密封在液晶面板中, 还需要在液晶面板的外围区域 5涂覆并固 化封框胶 3。 液晶盒阵列基板与彩膜基板的配向层控制液晶分子的初始排列 状态。
在现有技术中, 第一液晶配向层 15 和第二液晶配向层 23 通过喷墨 ( inkjet )式工艺分别制作在彩膜基板和阵列基板上, 第一液晶配向层 15和 第二液晶配向层 23采用聚酰亚胺(Polyimide, 筒称 PI )制成。 在喷墨工艺 中, 先将聚酰亚胺液通过喷墨的方式涂覆在基板上, 涂覆在基板上的聚酰亚 胺液通过一定时间的自由扩散一加热固化即可获得均匀厚度的液晶配向层。 但是, 由于聚酰亚胺液的液体表面张力以及液体黏性的限制, 可能使最终获 得的液晶配向层的边缘出现不均匀的区域。 如图 2所示为采用现有技术中制 成的第一液晶配向层 15 (或第二液晶配向层 23 )在外围区域 5中的局部放大 图。 对应图中的虚线框所示, 可清楚地看出液晶配向层的边缘出现厚度不均 匀的区域, 该配向层不均匀区域会对液晶盒中的液晶的控制产生紊乱, 从而 导致液晶显示器的显示出现异常。 在现有技术中, 为了避免出现这种情况, 要保障有效显示区 4的正常显示,一般是采取使第一液晶配向层 15和第二液 晶配向层 23的厚度不均匀区域被隔离在有效显示区 4以外的手段,但是,该 手段也同时导致液晶显示面板必然出现较宽的外围区域。 例如, 图 2中现有 技术中液晶配向层的外边缘到有效显示区 4 之间的距离一般需要达到
发明内容
本公开的目的之一是提供一种能够消除液晶配向层的不均匀区域、 从而 使得液晶显示面板的周边设计尺寸实现最小化的彩膜基板、 阵列基板、 液晶 显示面板以及液晶显示器。
本公开的一个实施例提供一种液晶显示器基板, 包括: 基底基板; 设置 在所述基底基板上的平坦化层; 以及设置在所述平坦化层上的液晶配向层, 其中, 所述平坦化层中靠近边缘处设置有一凹槽。
在一个示例中, 所述液晶配向层终止在所述凹槽内。
在一个示例中, 所述液晶显示器基板包括有效显示区域和位于所述有效 显示区域外围的外围区域, 所述凹槽的靠近所述有效显示区域的一侧与所述 有效显示区域之间的距离小于或等于 2mm。
在一个示例中, 所述凹槽沿着所述基底基板的边缘延伸。
在一个示例中, 所述液晶配向层的在所述 槽内的部分的厚度大于所述 液晶配向层的其他部分的厚度。
在一个示例中, 所述凹槽的深度为 6000A-8000A, 宽度为 lmm-1.5mm。 在一个示例中, 所述液晶配向层在所述凹槽内的厚度为 300θΑ-400θΑ。 在一个示例中, 所述液晶显示器基板为彩膜基板, 所述彩膜基板还包括 设置在所述平坦化层和所述基板之间的黑矩阵和彩膜层。
在一个示例中, 所述液晶显示器基板为阵列基板, 所述阵列基板还包括 设置在所述平坦化层和所述基板之间的薄膜晶体管 (TFT )开关元件以及相 应的电极线和扫描线。
本公开的另一个实施例提供一种液晶显示面板, 包括彼此对盒的第一基 板和第二基板以及布置在所述第一基板和所述第二基板之间的液晶层, 其中 所述第一基板和所述第二基板的每个包括: 基底基板; 设置在所述基底基板 上的平坦化层; 以及设置在所述平坦化层上的液晶配向层, 其中, 所述平坦 化层中靠近边缘处设置有一凹槽。
本公开的再一个实施例提供一种液晶显示器, 包括液晶显示面板, 该液 晶显示面板包括彼此对盒的第一基板和第二基板以及布置在所述第一基板和 所述第二基板之间的液晶层,其中所述第一基板和所述第二基板的每个包括: 基底基板; 设置在所述基底基板上的平坦化层; 以及设置在所述平坦化层上 的液晶配向层, 其中, 所述平坦化层中靠近边缘处设置有一凹槽
另外, 根据本公开的液晶显示面板或液晶显示器中的第一基板和第二基 板可以分别是根据本发明任一实施例的彩膜基板和阵列基板。
本公开的液晶显示面板利用了用于制作液晶配向层的聚酰亚胺液体的特 性, 在液晶显示面板外围区域中彩膜基板和阵列基板液晶配向层的周边开设 凹槽, 使得聚酰亚胺液体流入凹槽内。 通过凹槽释放表面张力, 有效地减小 (甚至消除)液晶配向层中的聚酰亚胺液体在自由扩散过程中由于表面张力 和黏性的影响导致的外围区域不均匀的不足, 从而可缩小液晶配向层在外围 区域厚度不均匀的范围, 实现液晶显示面板的周边设计尺寸最小化。 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为现有技术中液晶显示面板的结构示意图。
图 2为图 1的局部放大示意图。
图 3为本公开实施例 1中的液晶显示面板的结构示意图。
图 4为图 3的局部放大结构示意图。
图 5为本公开实施例 2中的液晶显示面板的结构示意图。 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。
一种彩膜基板, 所述彩膜基板包括第一基底基板、 以及设置在第一基底 基板上的黑矩阵、 彩膜层以及平坦保护层, 所述彩膜基板上设置有第一液晶 配向层,其中,所述彩膜基板中的平坦保护层中靠近边缘处开设有第一凹槽。
一种阵列基板, 所述阵列基板包括第二基底基板、 以及设置在第二基底 基板上的 TFT开关元件以及相应的电极线和扫描线以及绝缘层,所述阵列基 板上设置有第二液晶配向层, 其中, 所述阵列基板的绝缘层中靠近边缘处开 设有第二凹槽。
以上所述的彩膜基板和阵列基板可以统称为液晶显示器基板, 所述的平 坦保护层和绝缘层均是为液晶配向层的形成提供平坦化表面, 因此, 可以统 称为平坦化层。 从而, 根据本公开的一个实施例可以提供一种液晶显示器基 板, 包括: 基底基板; 设置在所述基底基板上的平坦化层; 以及设置在所述 平坦化层上的液晶配向层,其中,所述平坦化层中靠近边缘处设置有一凹槽。
一种液晶显示面板, 包括彩膜基板和阵列基板, 其中, 所述彩膜基板采 用上述的彩膜基板, 所述阵列基板采用上述的阵列基板。
实施例 1 :
图 3为本实施例中的液晶显示面板的示意图, 其中主要示出了液晶显示 面板中外围区域的结构。 液晶显示面板包括相互对盒的第一液晶显示器基板 和第二液晶显示器基板, 液晶层插设在两个液晶显示器基板之间。 例如, 第 一液晶显示器基板可以是彩膜基板, 第二液晶显示器基板可以是阵列基板。 液晶显示面板包括有效显示区域 4和位于有效显示区域 4外围的外围区域 5。 有效显示区域 4为用于进行显示图像的区域,而外围区域 5不用于显示图像。 由于本公开的设计重点在于外围区域 5的设计, 因此图中仅仅筒单地示出有 效显示区域 4, 而并没有示出有效显示区域 4的详细结构。 然而, 根据本公 功能层。
在外围区域 5中, 彩膜基板和阵列基板可能只包含有效显示区域 4中的 部分功能层。 如图 3所示, 在外围区域 5中, 彩膜基板中包括第一基底基板 1、 以及设置在第一基底基板 1上的黑矩阵 12、 彩膜层 13和平坦保护层 14; 阵列基板中包括第二基底基板 2、 以及设置在第二基底基板 2上的第一绝缘 层和第二绝缘层 (统称绝缘层 22 )。 同时,在彩膜基板和阵列基板的内侧(相 互面对的一侧)分别设置有液晶配向层 15和 23。 也就是说, 在彩膜基板的 平坦保护层 14上设置第一液晶配向层 15 ,在阵列基板的绝缘层 22上设置第 二液晶配向层 23。 在彩膜基板和阵列基板边缘之间的缝隙中, 为将液晶材料 固定密封在液晶面板中, 还需要在液晶显示面板的外围区域 5涂覆并固化封 框胶 3。
如图 3所示,所述彩膜基板中的平坦保护层 14中的靠近边缘处开设有第 一凹槽 16,所述第一液晶配向层 15的一端终止在第一凹槽 16内(也就是说, 第一液晶配向层 15的边缘位于第一凹槽 16内) ; 并且所述阵列基板的绝缘 层 22中的靠近边缘处开有第二凹槽 23 ,所述第二液晶配向层 23的一端终止 在第二凹槽 24 内 (也就是说, 第二液晶配向层 23的边缘位于第一凹槽 24 内) 。 例如, 第一凹槽 16和第二凹槽 23可以分别沿第一基底基板 1和第二 基底基板 2的边缘延伸。 例如, 在第一基底基板 1和第二基底基板 2分别为 矩形形状的情况下, 在平面图中看, 第一凹槽 16和第二凹槽 23也可以分别 形成封闭的矩形形状。 然而, 第一基底基板 1和第二基底基板 2的形状不限 制为矩形形状, 而是可以为任何合适的形状。
在本实施例中, 所述第一凹槽 16和所述第二凹槽 24长度和宽度相等, 且在垂直于彩膜基板或阵列基板的方向上对齐。
在一个示例中,所述第一凹槽 16的靠近有效显示区域 4的一侧与有效显 示区 4之间的距离小于或等于 2mm, 第二凹槽 24的靠近有效显示区域 4的 一侧与有效显示区 4之间的距离小于或等于 2mm。 所述第一凹槽 16与第二 凹槽 24的位置决定了液晶显示面板的周边设计的最小化尺寸。由于第一凹槽 16和第二凹槽 24能够! ^放用于制作液晶配向层的聚酰亚胺液体的表面张力, 因此, 在液晶配向层的除凹槽 16或 24外的靠近边缘的部分也能够具有较均 匀的厚度, 因此, 液晶配向层 15或 23的边缘可以离有效显示区域 4更近而 不会影响有效显示区域 4的显示效果。 相比现有技术中, 液晶配向层的边缘 到有效显示区 4的距离为 4.5mm, 本实施例中液晶配向层的边缘到有效显示 区 4的距离为小于或等于 3.5mm, 使液晶显示面板的周边设计的最小化尺寸 进一步减小。
图 4为图 3的局部放大示意图。 图 4中的虚线框中的结构与图 3中的虚 线框中的结构相对应。从图 4中较清楚地示出了第二凹槽 24的结构,所述阵 列基板的绝缘层 22中的靠近边缘处开设有第二凹槽 24。
在本实施例中,第二凹槽 24的宽度为 lmm-1.5mm、深度为 600θΑ-800θΑ; 第一凹槽 16的宽度和深度与第二凹槽 24相同。 设置在彩膜基板上的第一液 晶配向层以及设置在阵列基板上的第二液晶配向层的正常厚度为 800A
-ΐοοοΑ, 而第一液晶配向层和第二液晶配向层在第一凹槽和第二凹槽内的厚 度为 300θΑ-400θΑ。 具体地, 第一液晶配向层在平坦保护层 14上的厚度为 800A -ΙΟΟθΑ; 第二液晶配向层在绝缘层 22上的厚度为 800A -100θΑ。 进一 步优选地, 第一液晶配向层在第一凹槽里的厚度为 3000A-4000A; 第二液晶 配向层在第二凹槽里的厚度为 300θΑ-400θΑ。
在本实施例中,第一基底基板 1和第二基底基板 2的材料一般采用玻璃, 第一液晶配向层 15和第二液晶配向层 23的材料一般采用聚酰亚胺, 绝缘层 22的材料一般采用氮化硅。 封框胶 3可以采用任何合适的密封剂, 封框胶 3 的作用是将第一基板 1和第二基板 2彼此接合及密封,例如将它们粘接起来。 黑矩阵 12、 彩膜层 13、 平坦保护层 14的材料为树脂材料。 平坦保护层 14 具有两个作用: 第一是作为平坦保护层, 第二是使彩色滤光片表面平坦化。
在本实施例中, 还提供一种液晶显示器, 其包括上述液晶显示面板。 在本实施例中, 利用液体具有表面张力且具有一定黏性的特性, 在液晶 显示面板外围区域中彩膜基板和阵列基板液晶配向层的外围区域开设凹槽, 使得用于制作液晶配向层的聚酰亚胺液体终止于凹槽内。 通过凹槽释放表面 张力, 有效地减小 (甚至消除)液晶配向层中的聚酰亚胺液体在自由扩散过 程中由于表面张力和黏性的影响导致的外围区域不均匀的不足, 从而可缩小 液晶配向层在外围区域厚度不均匀的范围, 实现液晶显示面板的周边设计尺 寸最小化。
实施例 2 本实施例与实施例 1的区别在于, 根据液晶面板设计中各个功能层的设 置需要, 为了避免液晶配向层与液晶面板中功能层位置的沖突, 本实施例中 彩膜基板中设置的第一凹槽 16和在阵列基板中设置的第二凹槽 24在沿垂直 于彩膜基板或阵列基板的方向上可以是相互错开的, 且第一凹槽和第二凹槽 的长度和宽度可以不相等, 如图 5所示。
具体的, 所述液晶显示面板包括有效显示区域和外围区域, 所述第一凹 槽的靠近有效显示区域的一侧与有效显示区域之间的距离为 2mm,第二凹槽 的靠近有效显示区域的一侧与有效显示区域之间的距离为 2mm。
本实施例中液晶显示面板的其他结构与实施例 1中的结构相同, 这里不 再赘述。
在本实施例中, 还提供一种液晶显示器, 其包括上述液晶显示面板。 另外, 对于本公开提供的液晶显示器基板, 例如彩膜基板和阵列基板, 可以参考上述实施例 1和实施例 2中描述的液晶显示面板中所提及的彩膜基 板和阵列基板, 在此也不对液晶显示器基板进行单独的描述。
在图 3-5所示的实施例中, 仅仅示出了第一凹槽 16和第二凹槽 24具有 矩形的截面形状, 然而本公开并不局限于此。 例如, 凹槽 16或 24的截面形 状可以为半圓形、 三角形以及任何合适的形状。
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. 一种液晶显示器基板, 包括:
基底基板;
设置在所述基底基板上的平坦化层; 以及
设置在所述平坦化层上的液晶配向层,
其中, 所述平坦化层中靠近边缘处设置有一凹槽。
2.根据权利要求 1所述的液晶显示器基板,其中所述液晶配向层终止在 所述 槽内。
3.根据权利要求 1所述的液晶显示器基板,其中所述液晶显示器基板包 括有效显示区域和位于所述有效显示区域外围的外围区域, 所述凹槽的靠近 所述有效显示区域的一侧与所述有效显示区域之间的距离小于或等于 2mm。
4.根据权利要求 1所述的液晶显示器基板,其中所述凹槽沿着所述基底 基板的边缘延伸。
5.根据权利要求 1所述的液晶显示器基板,其中所述液晶配向层的在所 述 槽内的部分的厚度大于所述液晶配向层的其他部分的厚度。
6. 根据权利要求 1 所述的液晶显示器基板, 其中所述 槽的深度为 600θΑ-800θΑ, 宽度为 lmm-1.5mm。
7.根据权利要求 1所述的液晶显示器基板,其中所述液晶配向层在所述 凹槽内的厚度为 300θΑ-400θΑ。
8.根据权利要求 1所述的液晶显示器基板,其中所述液晶显示器基板为 彩膜基板, 所述彩膜基板还包括设置在所述平坦化层和所述基板之间的黑矩 阵和彩膜层。
9.根据权利要求 1所述的液晶显示器基板,其中所述液晶显示器基板为 阵列基板, 所述阵列基板还包括设置在所述平坦化层和所述基板之间的薄膜 晶体管 (TFT )开关元件以及相应的电极线和扫描线。
10. 一种液晶显示面板, 包括彼此对盒的第一基板和第二基板以及布置 在所述第一基板和所述第二基板之间的液晶层, 其中所述第一基板和所述第 二基板的每个包括:
基底基板; 设置在所述基底基板上的平坦化层; 以及
设置在所述平坦化层上的液晶配向层,
其中, 所述平坦化层中靠近边缘处设置有一凹槽。
11.根据权利要求 10所述的液晶显示面板,其中所述液晶配向层终止在 所述凹槽内。
12.根据权利要求 10所述的液晶显示面板,其中所述液晶显示面板包括 有效显示区域和位于所述有效显示区域外围的外围区域, 所述凹槽的靠近所 述有效显示区域的一侧与所述有效显示区域之间的距离小于或等于 2mm。
13.根据权利要求 10所述的液晶显示面板,其中所述凹槽沿着所述基底 基板的边缘延伸。
14.根据权利要求 10所述的液晶显示面板,其中所述液晶配向层的在所 述 槽内的部分的厚度大于所述液晶配向层的其他部分的厚度。
15. 根据权利要求 10 所述的液晶显示面板, 其中所述凹槽的深度为 600θΑ-800θΑ, 宽度为 lmm-1.5mm。
16.根据权利要求 10所述的液晶显示面板,其中所述液晶配向层在所述 凹槽内的厚度为 300θΑ-400θΑ。
17.根据权利要求 10所述的液晶显示面板,其中所述第一基板为彩膜基 板, 所述彩膜基板还包括设置在所述平坦化层和所述基板之间的黑矩阵和彩 膜层。
18.根据权利要求 10所述的液晶显示面板,其中所述第二基板为阵列基 板, 所述阵列基板还包括设置在所述平坦化层和所述基板之间的薄膜晶体管 ( TFT )开关元件以及相应的电极线和扫描线。
19. 一种液晶显示器, 包括液晶显示面板, 该液晶显示面板包括彼此对 盒的第一基板和第二基板以及布置在所述第一基板和所述第二基板之间的液 晶层, 其中所述第一基板和所述第二基板的每个包括:
基底基板;
设置在所述基底基板上的平坦化层; 以及
设置在所述平坦化层上的液晶配向层,
其中, 所述平坦化层中靠近边缘处设置有一凹槽。
PCT/CN2013/072640 2012-03-15 2013-03-14 液晶显示器基板、液晶显示面板以及液晶显示器 WO2013135186A1 (zh)

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