WO2020107720A1 - 彩膜基板及液晶显示面板 - Google Patents

彩膜基板及液晶显示面板 Download PDF

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Publication number
WO2020107720A1
WO2020107720A1 PCT/CN2019/075420 CN2019075420W WO2020107720A1 WO 2020107720 A1 WO2020107720 A1 WO 2020107720A1 CN 2019075420 W CN2019075420 W CN 2019075420W WO 2020107720 A1 WO2020107720 A1 WO 2020107720A1
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WIPO (PCT)
Prior art keywords
shielding layer
light
sub
base substrate
color filter
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Application number
PCT/CN2019/075420
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English (en)
French (fr)
Inventor
艾凤珠
Original Assignee
武汉华星光电技术有限公司
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Application filed by 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US16/340,118 priority Critical patent/US20200301190A1/en
Publication of WO2020107720A1 publication Critical patent/WO2020107720A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • 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
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13396—Spacers having different sizes
    • 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
    • G02F1/13398—Spacer materials; Spacer properties

Definitions

  • the invention relates to the field of display technology, in particular to a color film substrate and a liquid crystal display panel.
  • the existing liquid crystal display panel generally includes a color filter substrate and an array substrate oppositely arranged, and a liquid crystal layer disposed between the two substrates.
  • a black matrix is provided on one side of the color filter substrate to block light leakage, but the black matrix has certain Conductivity, in order to increase the anti-static (ESD) capability of the liquid crystal display panel, several grooves will be dug through the black matrix in the non-display area of the liquid crystal display panel to block the black matrix from static electricity Conducted from the non-display area of the liquid crystal display panel to the display area to prevent static electricity from causing poor display.
  • the technical solution mainly adopted in the prior art is to fill the trench with a color resist block superimposed by a single layer of color resist or multiple layers of color resist for shading. Due to the non-display area of the liquid crystal display panel It is also designed with a driving circuit, inevitably there is an electric field that can cause the liquid crystal molecules in the liquid crystal layer to deflect. Under the action of the electric field, the liquid crystal molecules deflect, so that the backlight that hits the non-display area of the liquid crystal display panel reaches the color filter substrate side, and is filled in The color block in the groove has a certain light transmittance and cannot be completely blocked. After the light passing through the color block is emitted, bright lines will appear on the edge of the liquid crystal display panel, affecting the display quality of the liquid crystal display panel .
  • the present invention provides a color film substrate and a liquid crystal display panel to solve the existing liquid crystal display panel. Since the black matrix at the edge area of the color film substrate is provided with grooves to increase the antistatic capability of the panel, in order to block the grooves The light leakage at the location is filled with color resists in the trenches, but the color resists cannot play a good role in shading, resulting in the appearance of bright lines at the edges of the panel, which in turn affects the technical problems of display quality.
  • the present invention provides a color filter substrate, including: a base substrate, a color resist layer formed on the base substrate, a black matrix formed on the base substrate, an insulating layer, and a light shielding layer, the black matrix
  • An edge region of the black matrix is provided with a trench; the insulating layer is formed in the trench; the light shielding layer is formed on the insulating layer; wherein, the light shielding layer covers the trench,
  • the surface of the light shielding layer facing away from the base substrate is higher than the surface of the black matrix facing away from the base substrate, and the insulating layer and the color resist layer are formed through the same photomask process.
  • the light shielding layer includes a first sub-light shielding layer and a second sub-light shielding layer disposed adjacent to the surface of the insulating layer.
  • the height of the first sub-shading layer is higher than the height of the second sub-shading layer.
  • the orthographic projections of the first sub-light-shielding layer and the second sub-light-shielding layer on the base substrate together cover the trench on the base substrate Orthographic projection.
  • a side surface of the insulating layer facing away from the base substrate is parallel to the base substrate.
  • the insulating layer fills the trench.
  • a surface of the insulating layer facing away from the base substrate is higher than the depth of the trench.
  • the present invention also provides a color filter substrate, including: a base substrate, a black matrix formed on the base substrate, an insulating layer, and a light shielding layer formed on the insulating layer; an edge area of the black matrix A groove is formed through the black matrix; the light shielding layer covers the groove.
  • the surface of the shading layer facing away from the base substrate is higher than the surface of the black matrix facing away from the base substrate.
  • the light shielding layer includes a first sub-light shielding layer and a second sub-light shielding layer disposed adjacent to the surface of the insulating layer.
  • the height of the first sub-shading layer is higher than the height of the second sub-shading layer.
  • the orthographic projections of the first sub-light-shielding layer and the second sub-light-shielding layer on the base substrate together cover the trench on the base substrate Orthographic projection.
  • a side surface of the insulating layer facing away from the base substrate is parallel to the base substrate.
  • the insulating layer fills the trench.
  • a surface of the insulating layer facing away from the base substrate is higher than the depth of the trench.
  • the invention also provides a liquid crystal display panel, which includes an array substrate and a color filter substrate that are oppositely arranged, and a liquid crystal layer disposed between the array substrate and the color filter substrate, wherein the color filter substrate includes: including: A base substrate, a black matrix formed on the base substrate, an insulating layer, and a light shielding layer formed on the insulating layer; the edge region of the black matrix is provided with a groove penetrating the black matrix; The light shielding layer covers the trench.
  • the light shielding layer includes a first sub-light shielding layer and a second sub-light shielding layer disposed adjacent to each other, and the height of the first sub-light shielding layer is higher than that of the second sub-light shielding layer .
  • the orthographic projections of the first sub-light-shielding layer and the second sub-light-shielding layer on the base substrate together cover the trench on the base substrate Orthographic projection.
  • a side surface of the insulating layer facing away from the base substrate is parallel to the base substrate.
  • the insulating layer fills the trench.
  • the color filter substrate and the liquid crystal display panel provided by the present invention can effectively improve the light leakage problem at the edge of the panel and improve the display quality by providing a light shielding layer; in addition, the light shielding layer can maintain a certain height and be cut on the panel In the process, it can also play a buffering role to prevent the cracking of the glass substrate, and can be prepared together with other film layers without adding a new process.
  • FIG. 1 is a schematic structural diagram of a color film substrate of the present invention
  • FIG. 3 is a schematic structural diagram of a liquid crystal display panel of the present invention.
  • the present invention is directed to the existing liquid crystal display panel. Since the black matrix at the edge area of the color filter substrate is provided with grooves to increase the antistatic capability of the panel, in order to block the light leakage at the grooves, the grooves are filled with color resists, However, the color resist cannot play a good role in shading, which causes bright lines to appear on the edge of the panel, which in turn affects the technical problem of display quality. This embodiment can solve this defect.
  • the present invention provides a color filter substrate 10, which includes a base substrate 11, a black matrix 12 provided on the base substrate 11, an insulating layer 13, and a light shielding layer 14.
  • the edge area of the black matrix 12 is provided with several grooves 121 penetrating through the black matrix 12.
  • the number of the grooves 121 depends on the width of the non-display area when the color filter substrate 10 is actually applied to the display panel.
  • a groove is used as an example for description, and the groove 121 is used to block the entry of external static electricity and prevent the static electricity from causing a defective display screen.
  • the insulating layer 13 is formed in the trench 121, the light shielding layer 14 is formed on the insulating layer 13, and the insulating layer 13 covers the trench 121.
  • the insulating layer 13 fills the trench 121.
  • a side surface of the insulating layer 13 facing away from the base substrate 11 is parallel to the base substrate 11.
  • the insulating layer not only plays an insulating role, preventing The entry of static electricity can also provide a flat surface for the shading layer 14.
  • the surface of the insulating layer 13 facing away from the base substrate 11 may be higher than the depth of the trench 121; the insulating layer 13 is higher than the portion of the trench 121
  • the width W1 may be greater than the width W2 of the trench 121, which may provide a larger shielding area for the light shielding layer 14 and achieve a better shielding effect.
  • the material of the insulating layer 13 is a blue color resist, and may also be red and green resist materials.
  • the color film substrate 10 further includes red, green, and blue resist layers.
  • the insulating layer 13 may be colored with The color resist layers of the film substrate 10 share the same mask process, and there is no need to add a new mask process, which saves the manufacturing process.
  • the light shielding layer 14 includes a first sub light shielding layer 141 and a second sub light shielding layer 142 disposed on the surface of the insulating layer, the first sub light shielding layer is disposed adjacent to the second sub light shielding layer 142, the The number of the first sub-light-shielding layer 141 and the second sub-light-shielding layer 142 can be set to be multiple. In this embodiment, the number of the first sub-light-shielding layer 141 and the second sub-light-shielding layer 142 are equal. For two, all the orthographic projections of the first sub-light-shielding layer 141 and the second sub-light-shielding layer 142 on the base substrate 11 together cover the orthographic projection of the trench on the base substrate 11.
  • the height of the first sub-shading layer 141 is higher than the height of the second sub-shading layer 142, the width of the first sub-shading layer is larger than the width of the second sub-shading layer 142, two of the first The second sub-light-shielding layer 142 is disposed between the sub-light-shielding layers 141.
  • the first sub-light-shielding layer 141 and the second sub-light-shielding layer 142 can improve the problem of light leakage at the edge of the panel, and can also perform a cutting process on the panel During the process, the edge of the glass substrate is prevented from cracking (the general substrate substrate is a glass substrate). Since the shading layer 14 will be compressed during the cutting process, if the height of the shading layer 14 is set to the first sub-shading layer 141 At the same height, the density of the shading layer 14 will be too large and the supporting force will be too strong, which will cause the edge of the glass to break.
  • the present invention divides the shading layer 14 into a first sub-shading layer 141 and a second sub-shading layer 142 with different heights.
  • the density of the light shielding layer 14 can be reduced, thereby reducing the risk of panel breakage.
  • the first sub-light-shielding layer 141 and the second sub-light-shielding layer 142 are made of black photosensitive material. When the first sub-light-shielding layer 141 and the second sub-light-shielding layer 142 are prepared, they are in contact with the display area of the display panel
  • the main spacer (Main PS) and auxiliary spacer (Sub PS) Prepared together, completed through the same process, without adding a new process.
  • the present invention also provides a liquid crystal display panel 100, which defines a display area and a non-display area NA disposed around the display area, including an array substrate 20, a liquid crystal layer 30, and the above embodiments ⁇ 10 ⁇ The color film substrate 10 described.
  • the color filter substrate 10 is disposed opposite to the array substrate 20, and the liquid crystal layer 30 is disposed between the array substrate 20 and the color filter substrate 10.
  • the liquid crystal display panel 100 further includes a lower polarizer 50 disposed on the side of the array substrate 20 facing away from the liquid crystal layer 30 and an upper polarizer 40 disposed on the side of the color film substrate 10 facing away from the liquid crystal layer 30 .
  • the color filter substrate 10 includes a base substrate 11, a black matrix 12, an insulating layer 13, a light shielding layer 14, and red, green, and blue resist layers (not shown in the figure) located in the display area.
  • the black matrix 12 is disposed on a side of the base substrate 11 close to the liquid crystal layer 30, and a groove penetrating the black matrix is provided in an edge area (located in the non-display area NA) of the black matrix 12 121.
  • the insulating layer 13 is formed in the trench 121, the light shielding layer 14 is formed on the insulating layer 13, and the insulating layer 13 covers the trench 121.
  • the light shielding layer 14 includes a first sub light shielding layer 141 and a second sub light shielding layer 142 disposed on the surface of the insulating layer, the first sub light shielding layer is disposed adjacent to the second sub light shielding layer 142, the first The orthographic projections of the sub-light shielding layer 141 and the second sub-light shielding layer 142 on the base substrate 11 together cover the orthographic projection of the trench on the base substrate 11, the height of the first sub-light shielding layer 141 It is higher than the height of the second sub light shielding layer 142.
  • the material of the insulating layer 13 is a blue color resist, and may also be red and green resist materials.
  • the color film substrate 10 further includes red, green, and blue resist layers.
  • the insulating layer 13 may be colored with The color resist layers of the film substrate 10 share the same mask process, and there is no need to add a new mask process, which saves the manufacturing process.
  • the first sub-light-shielding layer 141 and the second sub-light-shielding layer 142 are made of black photosensitive material. When the first sub-light-shielding layer 141 and the second sub-light-shielding layer 142 are prepared, they are in contact with the display area of the display panel
  • the main spacer (Main PS) and auxiliary spacer (Sub PS) Prepared together, completed through the same process, without adding a new process.
  • the color filter substrate and the liquid crystal display panel provided by the present invention can effectively improve the light leakage problem at the edge of the panel and improve the display quality by providing a light shielding layer; in addition, the light shielding layer can maintain a certain height. It can play a buffering role to prevent the cracking of the glass substrate, and can be prepared together with other film layers without adding a new process.

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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)
  • Optical Filters (AREA)

Abstract

一种彩膜基板（10）及液晶显示面板（100），包括：衬底基板（11）、形成于衬底基板（11）上的黑矩阵（12）、形成于沟槽（121）内的绝缘层（13）、以及形成于绝缘层（13）上的遮光层（14）；黑矩阵（12）的边缘区域开设有贯穿黑矩阵（12）的沟槽（121）；遮光层（14）覆盖沟槽（121）。通过设置遮光层（14），能够有效改善面板边缘的漏光问题，提升显示品质。

Description

彩膜基板及液晶显示面板 技术领域
本发明涉及显示技术领域，尤其涉及一种彩膜基板及液晶显示面板。
 背景技术
现有的液晶显示面板一般包括相对设置的彩膜基板与阵列基板、设置于两基板之间的液晶层，彩膜基板的一侧设置有黑色矩阵，用于遮挡漏光，但是黑色矩阵具备一定的导电性，为增加液晶显示面板的防静电(ESD)能力，会对位于液晶显示面板的非显示区内的黑色矩阵挖出数道贯穿该黑色矩阵的沟槽，以阻挡所述黑色矩阵将静电由液晶显示面板的非显示区传导至显示区，防止静电造成画面显示不良。
为遮挡沟槽处的漏光，现有技术主要采用的技术方案是将由单层色阻或多层色阻叠加的色阻块填充到所述沟槽内进行遮光由于液晶显示面板的非显示区内也设计有驱动电路，不可避免地存在可引起液晶层中液晶分子偏转的电场，在电场作用下液晶分子偏转，使得射向液晶显示面板的非显示区的背光到达彩膜基板侧，而填充在所述沟槽内的色阻块都具有一定的光透过率，无法彻底遮光，透过色阻块的光线射出后，会在液晶显示面板的边缘出现亮线，影响液晶显示面板的显示品质。
 技术问题
本发明提供一种彩膜基板及液晶显示面板，以解决现有的液晶显示面板，由于彩膜基板的边缘区域处的黑色矩阵设置有沟槽，来增加面板的防静电能力，为了遮挡沟槽处的漏光，在沟槽内填充有色阻，但色阻不能起到很好的遮光作用，导致面板的边缘出现亮线的现象，进而影响显示品质的技术问题。
 技术解决方案
为解决上述问题，本发明提供的技术方案如下：
本发明提供一种彩膜基板，包括：衬底基板、形成于所述衬底基板上的色阻层、形成于所述衬底基板上的黑矩阵、绝缘层以及遮光层，所述黑矩阵的边缘区域设有贯穿所述黑矩阵的沟槽；所述绝缘层形成于所述沟槽内；所述遮光层形成于所述绝缘层上；其中，所述遮光层覆盖所述沟槽，所述遮光层背离所述衬底基板一侧的表面高出所述黑矩阵背离所述衬底基板一侧的表面，所述绝缘层与所述色阻层经过同一光罩制程形成。
在本发明的至少一种实施例中，所述遮光层包括相邻设置在所述绝缘层表面的第一子遮光层和第二子遮光层。
在本发明的至少一种实施例中，所述第一子遮光层的高度高于所述第二子遮光层的高度。
在本发明的至少一种实施例中，所述第一子遮光层和所述第二子遮光层在所述衬底基板上的正投影一起覆盖所述沟槽在所述衬底基板上的正投影。
在本发明的至少一种实施例中，所述绝缘层背离所述衬底基板的一侧表面平行于所述衬底基板。
在本发明的至少一种实施例中，所述绝缘层填充满所述沟槽。
在本发明的至少一种实施例中，所述绝缘层背离所述衬底基板的一侧表面高于所述沟槽的深度。
本发明还提供一种彩膜基板，包括：衬底基板、形成于所述衬底基板上的黑矩阵、绝缘层、以及形成于所述绝缘层上的遮光层；所述黑矩阵的边缘区域开设有贯穿所述黑矩阵的沟槽；所述遮光层覆盖所述沟槽。
在本发明的至少一种实施例中，所述遮光层背离所述衬底基板一侧的表面高出所述黑矩阵背离所述衬底基板一侧的表面。
在本发明的至少一种实施例中，所述遮光层包括相邻设置在所述绝缘层表面的第一子遮光层和第二子遮光层。
在本发明的至少一种实施例中，所述第一子遮光层的高度高于所述第二子遮光层的高度。
在本发明的至少一种实施例中，所述第一子遮光层和所述第二子遮光层在所述衬底基板上的正投影一起覆盖所述沟槽在所述衬底基板上的正投影。
在本发明的至少一种实施例中，所述绝缘层背离所述衬底基板的一侧表面平行于所述衬底基板。
在本发明的至少一种实施例中，所述绝缘层填充满所述沟槽。
在本发明的至少一种实施例中，所述绝缘层背离所述衬底基板的一侧表面高于所述沟槽的深度。
本发明还提供一种液晶显示面板，包括相对设置的阵列基板和彩膜基板、配置于所述阵列基板与所述彩膜基板之间的液晶层，其中，所述彩膜基板包括：包括：衬底基板、形成于所述衬底基板上的黑矩阵、绝缘层、以及形成于所述绝缘层上的遮光层；所述黑矩阵的边缘区域开设有贯穿所述黑矩阵的沟槽；所述遮光层覆盖所述沟槽。
在本发明的至少一种实施例中，所述遮光层包括相邻设置的第一子遮光层和第二子遮光层，所述第一子遮光层的高度高于所述第二子遮光层。
在本发明的至少一种实施例中，所述第一子遮光层和所述第二子遮光层在所述衬底基板上的正投影一起覆盖所述沟槽在所述衬底基板上的正投影。
在本发明的至少一种实施例中，所述绝缘层背离所述衬底基板的一侧表面平行于所述衬底基板。
在本发明的至少一种实施例中，所述绝缘层填充满所述沟槽。
 有益效果
本发明的有益效果为：本发明提供的彩膜基板及液晶显示面板，通过设置遮光层，能够有效改善面板边缘的漏光问题，提升显示品质；另外，遮光层能够维持一定的高度，在面板切割过程中，也能起到缓冲作用，防止玻璃基板的破裂，且可与其他的膜层一起制备，不需增加新的制程。
 附图说明
为了更清楚地说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介绍，显而易见地，下面描述中的附图仅仅是发明的一些实施例，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他的附图。
图1为本发明彩膜基板的结构示意图；
图2为本发明彩膜基板的另一结构示意图；
图3为本发明液晶显示面板的结构示意图。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。在图中，结构相似的单元是用以相同标号表示。
本发明针对现有的液晶显示面板，由于彩膜基板的边缘区域处的黑色矩阵设置有沟槽，来增加面板的防静电能力，为了遮挡沟槽处的漏光，在沟槽内填充有色阻，但色阻不能起到很好的遮光作用，导致面板的边缘出现亮线的现象，进而影响显示品质的技术问题，本实施例能够解决该缺陷。
如图1和图2所示，本发明提供一种彩膜基板10，包括：衬底基板11、设置于所述衬底基板11上的黑矩阵12、绝缘层13、以及遮光层14。
其中，所述黑矩阵12的边缘区域开设有数道贯穿该黑矩阵12的沟槽121，所述沟槽121的个数视彩膜基板10实际应用于显示面板时的非显示区域的宽度需要而定，本实施例以一道沟槽为例进行说明，所述沟槽121用以隔绝外界静电进入，防止静电造成显示画面不良。
其中，所述绝缘层13形成于所述沟槽121内，所述遮光层14形成于所述绝缘层13上，所述绝缘层13覆盖所述沟槽121。
所述绝缘层13填充满所述沟槽121，所述绝缘层13背离所述衬底基板11的一侧表面平行于所述衬底基板11，所述绝缘层不仅起到绝缘的作用，防止静电进入，还能够为所述遮光层14提供一个平坦的表面。
为了起到更好的绝缘效果，所述绝缘层13背离所述衬底基板11的一侧表面可高于所述沟槽121的深度；所述绝缘层13高出所述沟槽121的部分的宽度W1可大于所述沟槽121的宽度W2，可为所述遮光层14提供更大的遮挡面积，起到更好的遮挡效果。
所述绝缘层13的材料为蓝色色阻，也可为红、绿色阻材料，所述彩膜基板10还包括红、绿、蓝色阻层，所述绝缘层13在制备时，可与彩膜基板10的色阻层共用同一光罩制程，不需要增加新的光罩制程，节约了制作程序。
所述遮光层14包括设置在所述绝缘层表面的第一子遮光层141和第二子遮光层142，所述第一子遮光层与所述第二子遮光层142相邻设置，所述第一子遮光层141和所述第二子遮光层142的个数可设置为多个，本实施例中，所述第一子遮光层141和所述第二子遮光层142的个数均为两个，所有的第一子遮光层141和第二子遮光层142在所述衬底基板11上的正投影一起覆盖所述沟槽在所述衬底基板11上的正投影。
所述第一子遮光层141的高度高于所述第二子遮光层142的高度，所述第一子遮光层的宽度大于所述第二子遮光层142的宽度，两个所述第一子遮光层141之间设置一个所述第二子遮光层142。
所述彩膜基板10在应用于液晶显示面板时，所述第一子遮光层141和所述第二子遮光层142在起到改善面板边缘漏光问题的同时，也能在面板进行切割制程的过程中，防止玻璃基板边缘的破裂（一般衬底基板采用玻璃基板），由于在切割的过程中，遮光层14会受到挤压，如果将遮光层14的高度都设置为第一子遮光层141同等的高度，就会造成遮光层14的密度过大，支撑力过强，导致玻璃边缘破裂，因此本发明将遮光层14分成不同高度的第一子遮光层141和第二子遮光层142，能够减小所述遮光层14的密度，进而减小面板破片的风险。
所述第一子遮光层141和所述第二子遮光层142采用黑色感光材料制备，所述第一子遮光层141和所述第二子遮光层142在制备时，与显示面板的显示区域内的主间隔物（Main PS）和辅助间隔物（Sub PS）一起制备，经过同一工艺完成，不用增加新的制程。
如图1~图3所示，本发明还提供一种液晶显示面板100，定义有显示区域以及围绕该显示区域设置的非显示区域NA，包括阵列基板20、液晶层30、以及上述实施例所述的彩膜基板10。
所述彩膜基板10与所述阵列基板20相对设置，所述液晶层30配置于所述阵列基板20与所述彩膜基板10之间。
所述液晶显示面板100还包括设置于所述阵列基板20背离所述液晶层30一侧的下偏光片50和设置于所述彩膜基板10背离所述液晶层30一侧的上偏光片40。
所述彩膜基板10包括衬底基板11、黑矩阵12、绝缘层13、遮光层14、以及位于显示区域内的红、绿、蓝色阻层（图中未示出）。
其中，所述黑矩阵12设置于所述衬底基板11靠近所述液晶层30的一侧，所述黑矩阵12的边缘区域（位于非显示区域NA）开设有贯穿所述黑矩阵的沟槽121。
所述绝缘层13形成于所述沟槽121内，所述遮光层14形成于所述绝缘层13上，所述绝缘层13覆盖所述沟槽121。
所述遮光层14包括设置在所述绝缘层表面的第一子遮光层141和第二子遮光层142，所述第一子遮光层与所述第二子遮光层142相邻设置，第一子遮光层141和第二子遮光层142在所述衬底基板11上的正投影一起覆盖所述沟槽在所述衬底基板11上的正投影,所述第一子遮光层141的高度高于所述第二子遮光层142的高度。
所述绝缘层13的材料为蓝色色阻，也可为红、绿色阻材料，所述彩膜基板10还包括红、绿、蓝色阻层，所述绝缘层13在制备时，可与彩膜基板10的色阻层共用同一光罩制程，不需要增加新的光罩制程，节约了制作程序。
所述第一子遮光层141和所述第二子遮光层142采用黑色感光材料制备，所述第一子遮光层141和所述第二子遮光层142在制备时，与显示面板的显示区域内的主间隔物（Main PS）和辅助间隔物（Sub PS）一起制备，经过同一工艺完成，不用增加新的制程。
所述彩膜基板10的具体结构可参考上述实施例一中的详细描述，这里不再赘述。
有益效果：本发明提供的彩膜基板及液晶显示面板，通过设置遮光层，能够有效改善面板边缘的漏光问题，提升显示品质；另外，遮光层能够维持一定的高度，在面板切割过程中，也能起到缓冲作用，防止玻璃基板的破裂，且可与其他的膜层一起制备，不需增加新的制程。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (20)

  1. 一种彩膜基板，其中，包括：
    衬底基板；
    色阻层，形成于所述衬底基板上；
    黑矩阵，形成于所述衬底基板上，所述黑矩阵的边缘区域设有贯穿所述黑矩阵的沟槽；
    绝缘层，形成于所述沟槽内；以及
    遮光层，形成于所述绝缘层上；其中，
    所述遮光层覆盖所述沟槽，所述遮光层背离所述衬底基板一侧的表面高出所述黑矩阵背离所述衬底基板一侧的表面，所述绝缘层与所述色阻层经过同一光罩制程形成。
  2. 根据权利要求1所述的彩膜基板，其中，所述遮光层包括相邻设置在所述绝缘层表面的第一子遮光层和第二子遮光层。
  3. 根据权利要求2所述的彩膜基板，其中，所述第一子遮光层的高度高于所述第二子遮光层的高度。
  4. 根据权利要求3所述的彩膜基板，其中，所述第一子遮光层和所述第二子遮光层在所述衬底基板上的正投影一起覆盖所述沟槽在所述衬底基板上的正投影。
  5. 根据权利要求1所述的彩膜基板，其中，所述绝缘层背离所述衬底基板的一侧表面平行于所述衬底基板。
  6. 根据权利要求5所述的彩膜基板，其中，所述绝缘层填充满所述沟槽。
  7. 根据权利要求6所述的彩膜基板，其中，所述绝缘层背离所述衬底基板的一侧表面高于所述沟槽的深度。
  8. 一种彩膜基板，其中，包括：
    衬底基板；
    黑矩阵，形成于所述衬底基板上，所述黑矩阵的边缘区域开设有贯穿所述黑矩阵的沟槽；
    绝缘层，形成于所述沟槽内；以及
    遮光层，形成于所述绝缘层上；其中，
    所述遮光层覆盖所述沟槽。
  9. 根据权利要求8所述的彩膜基板，其中，所述遮光层背离所述衬底基板一侧的表面高出所述黑矩阵背离所述衬底基板一侧的表面。
  10. 根据权利要求9所述的彩膜基板，其中，所述遮光层包括相邻设置在所述绝缘层表面的第一子遮光层和第二子遮光层。
  11. 根据权利要求10所述的彩膜基板，其中，所述第一子遮光层的高度高于所述第二子遮光层的高度。
  12. 根据权利要求11所述的彩膜基板，其中，所述第一子遮光层和所述第二子遮光层在所述衬底基板上的正投影一起覆盖所述沟槽在所述衬底基板上的正投影。
  13. 根据权利要求8所述的彩膜基板，其中，所述绝缘层背离所述衬底基板的一侧表面平行于所述衬底基板。
  14. 根据权利要求13所述的彩膜基板，其中，所述绝缘层填充满所述沟槽。
  15. 根据权利要求14所述的彩膜基板，其中，所述绝缘层背离所述衬底基板的一侧表面高于所述沟槽的深度。
  16. 一种液晶显示面板，包括相对设置的阵列基板和彩膜基板、配置于所述阵列基板与所述彩膜基板之间的液晶层，其中，所述彩膜基板包括：
    衬底基板；
    黑矩阵，形成于所述衬底基板靠近所述液晶层的一侧，所述黑矩阵的边缘区域开设有贯穿所述黑矩阵的沟槽；
    绝缘层，形成于所述沟槽内；以及
    遮光层，形成于所述绝缘层上；其中，所述遮光层覆盖所述沟槽。
  17. 根据权利要求16所述的液晶显示面板，其中，所述遮光层包括相邻设置的第一子遮光层和第二子遮光层，所述第一子遮光层的高度高于所述第二子遮光层。
  18. 根据权利要求17所述的液晶显示面板，其中，所述第一子遮光层和所述第二子遮光层在所述衬底基板上的正投影一起覆盖所述沟槽在所述衬底基板上的正投影。
  19. 根据权利要求16所述的液晶显示面板，其中，所述绝缘层背离所述衬底基板的一侧表面平行于所述衬底基板。
  20. 根据权利要求16所述的彩膜基板，其中，所述绝缘层填充满所述沟槽。
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CN113219699B (zh) * 2021-04-21 2023-02-10 惠科股份有限公司 一种彩膜基板、显示面板和显示装置
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