WO2019127771A1 - 一种显示面板及制作方法、液晶显示器 - Google Patents

一种显示面板及制作方法、液晶显示器 Download PDF

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Publication number
WO2019127771A1
WO2019127771A1 PCT/CN2018/073685 CN2018073685W WO2019127771A1 WO 2019127771 A1 WO2019127771 A1 WO 2019127771A1 CN 2018073685 W CN2018073685 W CN 2018073685W WO 2019127771 A1 WO2019127771 A1 WO 2019127771A1
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Prior art keywords
substrate
polymer retaining
retaining wall
liquid crystal
display panel
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PCT/CN2018/073685
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English (en)
French (fr)
Inventor
陈兴武
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深圳市华星光电技术有限公司
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Priority to US16/033,228 priority Critical patent/US10824023B2/en
Publication of WO2019127771A1 publication Critical patent/WO2019127771A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
    • C09K19/54—Additives having no specific mesophase characterised by their chemical composition
    • C09K19/542—Macromolecular compounds
    • 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1396—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
    • G02F1/1397—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell the twist being substantially higher than 90°, e.g. STN-, SBE-, OMI-LC cells

Definitions

  • the present application relates to the field of display technologies, and in particular, to a display panel, a manufacturing method thereof, and a liquid crystal display.
  • the main problem to be solved by the present application is to provide a display panel, a manufacturing method thereof, and a liquid crystal display, thereby limiting the flow of liquid crystal in the liquid crystal layer, improving the edge roughness of the polymer retaining wall, thereby improving light leakage at the edge of the pixel and improving the display effect.
  • the technical solution adopted by the present application is to provide a liquid crystal display including a display panel and a backlight, wherein the display panel includes a first substrate, a second substrate disposed opposite to the first substrate, And a liquid crystal layer disposed between the first substrate and the second substrate; wherein the liquid crystal layer is provided with a plurality of polymer retaining walls, and the polymer retaining wall comprises a plurality of first polymer retaining walls extending in a first direction and a second polymer retaining wall extending in a second direction, wherein the plurality of first polymer retaining walls and the plurality of second polymer retaining walls are interlaced to form a grid shape; wherein each grid in the grid shape corresponds to one Pixels; polymerizable monomers include acrylates, acrylate derivatives, methacrylates, methacrylate derivatives, cinnamate, coumarin, styrylpyridine, styrylbenzopyrrolidone, diphenyl At least one
  • a display panel including a first substrate, a second substrate disposed opposite to the first substrate, and the first substrate and the second substrate.
  • a liquid crystal layer wherein the liquid crystal layer is provided with a plurality of polymer retaining walls, the polymer retaining wall is in contact with the first substrate and the second substrate, and the polymerization direction of the polymerizable monomer in the polymer retaining wall is polymerized The thickness of the retaining wall is perpendicular to the direction.
  • the method for fabricating the display panel includes providing a display panel.
  • the display panel includes a first substrate and is opposite to the first substrate. a second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate, wherein the liquid crystal layer is provided with a polymerizable monomer; and the display panel is covered with a mask; wherein the mask is provided with Hollow area; the mask is irradiated with ultraviolet light to form a polymer retaining wall in the liquid crystal layer corresponding to the hollow region.
  • the beneficial effects of the present application are: by adding a polymerizable monomer to the liquid crystal layer, the polymerizable monomer is polymerized to form a plurality of directional polymer retaining walls, thereby restricting the flow of the liquid crystal in the liquid crystal layer,
  • the polymerization direction of the polymerizable monomer in the polymer retaining wall is directional, and the direction of polymerization is perpendicular to the thickness direction of the polymer retaining wall. Therefore, the edge of the polymer retaining wall is less likely to protrude, and the smoothness of the polymer retaining wall is improved. Edge roughness, which improves light leakage at the edges of the pixels and improves display.
  • FIG. 1 is a schematic structural view of an embodiment of a display panel provided by the present application.
  • FIG. 2 is a schematic structural view of another embodiment of a display panel provided by the present application.
  • FIG. 3 is a front cross-sectional view of another embodiment of the display panel provided by the present application.
  • FIG. 4 is a schematic flow chart of an embodiment of a method for fabricating a display panel provided by the present application
  • FIG. 5 is a schematic structural view of a polymerizable monomer before polymerization according to an embodiment of the method for fabricating a display panel provided by the present application;
  • FIG. 6 is a schematic structural view of a polymerizable monomer after polymerization in an embodiment of a method for fabricating a display panel provided by the present application;
  • FIG. 7 is a schematic structural view of a mask in an embodiment of a method for fabricating a display panel provided by the present application.
  • FIG. 8 is a schematic structural view of an embodiment of a liquid crystal display provided by the present application.
  • FIG. 1 is a schematic structural view of an embodiment of a display panel provided by the present application.
  • FIG. 1 is a side cross-sectional view of the display panel, and the display panel includes:
  • the first substrate 11 and the first substrate 12 are preferably flexible substrates, such as transparent plastic substrates, and may be glass or other substrates.
  • the first substrate 11 includes a TFT structure and a pixel electrode layer, respectively, and the second substrate 12 includes a common electrode layer and a color filter;
  • a common electrode layer may also be disposed in the first substrate 11 to form a horizontal electric field with the pixel electrode layer; and in a COA (Color Filter On Array) liquid crystal panel. It is also possible to arrange the color filter in the first substrate 11. It can be understood that the solution of the embodiment does not require the type of the liquid crystal display panel, and the solution can be applied to all the liquid crystal display panels.
  • the alignment layer is coated on the first substrate 11 and the first substrate 12.
  • the liquid crystal molecules 16 form a pretilt angle
  • the alignment layer may be a polyimide or a polyamic acid which is conventionally used.
  • liquid crystal is dropped on the first substrate 11 and the first substrate 12, and bonded to form a liquid crystal cell structure.
  • the first substrate 11 and the second substrate 12 are then paired, and the edges of the AA (effective display) region are coated to form a plastic frame to bond the first substrate 11 and the second substrate 12 together.
  • a through hole may be left in the plastic frame to evacuate the gap between the first substrate 11 and the second substrate 12, and then the liquid crystal material is poured from the through hole to form the liquid crystal layer 13.
  • the liquid crystal host material used in the liquid crystal layer 13 is a nematic liquid crystal material, and the nematic liquid crystal is composed of rod-shaped molecules having a large aspect ratio, and has fluidity similar to that of a common liquid, and the molecules are not arranged in layers, and it can be used up and down. , left and right, sliding back and forth, only parallel or nearly parallel to each other in the direction of the long axis of the molecule. Compared with smectic liquid crystals, nematic liquid crystals have a small viscosity and are rich in fluidity.
  • a plurality of polymer retaining walls 14 are disposed in the liquid crystal layer 13, and the polymer retaining wall 14 is in contact with the first substrate 11 and the second substrate 12.
  • the polymer retaining wall 14 is formed by polymerization of the polymerizable monomer 15.
  • the polymerization direction of the polymerizable monomer 15 is perpendicular to the thickness direction of the polymer retaining wall 14.
  • the polymerizable monomer 15 has a photoreactive property, and when subjected to ultraviolet (UV) irradiation, a polymerization reaction occurs.
  • UV irradiation is performed, due to the randomness of the reaction of the polymerizable monomer 15, the polymerizable monomer 15 in the liquid crystal cell is formed into a polymer retaining wall 14, and the edge of the polymer retaining wall 14 is also convex, resulting in a bump. The edge of the pixel leaks light, which affects the display.
  • the polymerization direction of the polymerizable monomer 15 is perpendicular to the thickness direction of the polymer retaining wall 14, in other words, the long axis direction of the polymerizable monomer 15 and the wall surface of the polymer retaining wall 14. Parallel, this will make the wall of the polymer retaining wall 14 smoother and reduce the possibility of bulging.
  • the polymer retaining wall 14 is formed.
  • a polymer retaining wall is formed at a gap of the pixel region to restrict the flow of the liquid crystal, and the polymerizable monomer 15 is polymerized in a direction perpendicular to the upper and lower substrates to prevent the edge of the polymer retaining wall due to the randomness of the polymerizable monomer reaction. Rough, reducing the occurrence of light leakage.
  • the polymerizable monomer 15 may be an acrylate, an acrylate derivative, a methacrylate, a methacrylate derivative, a cinnamate, a coumarin, a styrylpyridine, a styrylbenzopyrrole. At least one of a ketone, diphenylacetylene and the like.
  • the structure of the polymerizable monomer 15 is:
  • n has a value range of 1-7
  • structural formula of A is one of the following structural formulas:
  • A1 and A2 are one of the following structures:
  • R is one of C m H 2m+1 , OC m H 2m+1 , C m H 2m or OC m H 2m , m is an integer between 1-30; x1, x2 are cyclopropane, ring One of butane, cyclopentane, cyclohexane, cyclopentadiene or benzene.
  • the structure of the polymerizable monomer 15 is:
  • the display panel provided in this embodiment, by adding a polymerizable monomer to the liquid crystal layer, polymerizes the polymerizable monomer to form a plurality of directional polymer retaining walls, thereby limiting the liquid crystal in the liquid crystal layer.
  • the edge of the polymer retaining wall is less likely to protrude, and is smoother and improved.
  • the edge of the polymer retaining wall is roughened, which improves the light leakage at the edge of the pixel and improves the display effect.
  • FIG. 2 is a schematic structural diagram of another embodiment of a display panel provided by the present application.
  • the display panel includes:
  • a polymer retaining wall 14 is formed at a gap between two adjacent pixels in the pixel region 17, and a plurality of polymer retaining walls 14 are disposed in the liquid crystal layer 13, and the polymer retaining wall 14 is in contact with the first substrate 11 and the second substrate 12
  • the polymerization direction of the polymerizable monomer 15 in the polymer retaining wall 14 is perpendicular to the thickness direction of the polymer retaining wall 14.
  • FIG. 3 is a front cross-sectional view of the display panel.
  • the polymer retaining wall 14 includes a plurality of first polymer retaining walls 141 extending in a first direction and a plurality of second polymer retaining walls 142 extending in a second direction.
  • the plurality of first polymer retaining walls 141 and the plurality of second polymer retaining walls 142 are interlaced to form a grid shape, and the polymerization direction of the polymerizable monomer 15 is parallel to the display panel, wherein each mesh in the grid shape
  • the grid corresponds to one pixel.
  • the extending direction of the first polymer retaining wall 141 and the extending direction of the second polymer retaining wall 142 are perpendicular to each other, and may also form a set angle.
  • the polymerization direction of the polymerizable monomer 15 in the first polymer retaining wall 141 is perpendicular to the thickness direction of the first polymer retaining wall 141, that is, parallel to the wall surface of the first polymer retaining wall 141, and the second polymer block
  • the polymerization direction of the polymerizable monomer 15 in the wall 142 is perpendicular to the thickness direction of the second polymer retaining wall 142, that is, parallel to the wall surface of the second polymer retaining wall 142.
  • the polymer retaining wall 14 is in contact with the first substrate 11 and the second substrate 12 respectively, and extends in parallel with the first substrate 11 and the second substrate 12, and the thickness direction thereof is also the first substrate 11 and the second substrate.
  • the substrates 12 are parallel.
  • the polymerization direction of the polymerizable monomer 15 can be the following three cases:
  • the polymerization direction of the polymerizable monomer 15 is perpendicular to the first substrate 11 or the second substrate 12, so that the wall surface of the polymer retaining wall 14 is free from protrusions and smoother.
  • the polymerization direction of the polymerizable monomer 15 is parallel to the first substrate 11 or the second substrate 12, and parallel to the extending direction of the polymer retaining wall 14, so that the polymer retaining wall 14 can be made.
  • the wall has no bulges and is smoother.
  • the polymerization direction of the polymerizable monomer 15 is only parallel to the wall surface of the polymer retaining wall 14 and forms a certain angle with the first substrate 11 or the second substrate 12, so that the polymer can be made.
  • the wall of the retaining wall 14 has no bulge and is smoother.
  • the first polymer retaining wall 141 and the second polymer retaining wall 142 are perpendicular to each other and intertwined to surround the pixel region 17 such that the liquid crystal molecules are in the pixel region 17, thereby restricting the flow of liquid crystal molecules.
  • the shape in which the polymerizable monomer 15 is formed in a region irradiated with a specific ultraviolet light may be a wall-type, dendritic or void-containing crosslinked structure, which is determined by the chemical nature of the polymerizable monomer 15.
  • the display panel provided in this embodiment, by adding a polymerizable monomer to the liquid crystal layer, polymerizes the polymerizable monomer to form a plurality of directional first polymer retaining walls and a second polymer block.
  • the wall, the first polymer retaining wall and the second polymer retaining wall are interlaced to form a grid shape, which restricts the flow of the liquid crystal in the liquid crystal layer, the polymerization direction of the polymerizable monomer in the first polymer retaining wall and the second polymerization
  • the polymerization direction of the polymerizable monomers in the material retaining wall is perpendicular to each other, which improves the edge roughness of the polymer retaining wall and reduces light leakage at the edge of the pixel, thereby improving the display effect.
  • FIG. 4 is a schematic flowchart of a method for fabricating a display panel provided by the present application.
  • the method for fabricating the display panel includes:
  • Step 41 Provide a display panel.
  • the display panel includes a first substrate 11, a second substrate 12 disposed opposite the first substrate 11, and a liquid crystal layer 13 disposed between the first substrate 11 and the second substrate 12, in the liquid crystal layer 13.
  • the polymerizable monomer 15 and the liquid crystal molecules 16 in the above embodiment are provided.
  • Step 42 Covering a mask on the display panel.
  • Step 43 Irradiating the mask plate with ultraviolet light to form a polymer retaining wall in the liquid crystal layer corresponding to the hollow region.
  • the masking plate 18 is provided with a hollowed-out region 181.
  • the mask 18 In order to form the polymer retaining wall 14 in the liquid crystal layer 13, it is necessary to irradiate the display panel with ultraviolet rays so that the polymer retaining wall 14 is formed in the region irradiated with ultraviolet rays. Therefore, the mask 18 should have a hollowed out area 181 and a non-hollowed area 182.
  • the display panel is subjected to special wavelength polarized ultraviolet irradiation treatment, and the wavelength of the ultraviolet light may be 300 nm to 380 nm, and the masking process is performed by using the mask 18, so that the hollowed out region 181 of the mask 18 can be irradiated with ultraviolet light to make
  • the polymerizable monomer 15 in the liquid crystal layer 13 is completely reacted, and after the completion of the polymerization reaction, the polymer retaining wall 14 is separated from the liquid crystal molecules 16.
  • the polymer retaining wall 14 is in contact with the first substrate 11 and the second substrate 12, and the polarization direction of the ultraviolet light is perpendicular to the thickness direction of the polymer retaining wall 14, due to the polymerization direction and polymerization of the polymerizable monomer 15 in the polymer retaining wall 14.
  • the thickness direction of the material retaining wall 14 is perpendicular, so that the polymerization direction of the 14 polymerizable monomer 15 in the polymer retaining wall is parallel to the polarization direction of the ultraviolet light.
  • the polarization direction of the ultraviolet light is perpendicular to the first substrate 11 and The second substrate 12, the polymerization direction of the polymerizable monomer 15 is also perpendicular to the first substrate 11 and the second substrate 12.
  • the polarization direction of the ultraviolet light can refer to the polymerization direction of the polymerizable monomer 15 in the above embodiment, and the ultraviolet light is no longer used here.
  • the polarization direction of the light is described in detail.
  • the mask plate 18 is provided with a plurality of first hollow regions 1811 extending in a first direction and a plurality of second hollow regions 1812 extending in a second direction, a plurality of first hollow regions 1811 and a plurality of The two hollow regions 1812 are interlaced to form a grid shape; wherein each of the non-hollow regions 182 in the grid shape corresponds to one pixel.
  • the display panel provided by the embodiment provides a method for manufacturing a display panel by covering a mask to form a polymer retaining wall, so that the formed polymer retaining wall restricts the flow of the liquid crystal, and the polymer block
  • the polymerization direction of the polymerizable monomer in the wall is parallel to the polarization direction of the ultraviolet light, so that the edge of the polymer retaining wall is less likely to bulge and the edges are relatively neat, thereby reducing the occurrence of light leakage.
  • FIG. 8 is a schematic structural diagram of an embodiment of a liquid crystal display provided by the present application.
  • the liquid crystal display 80 includes a display panel 81 and a backlight 82 .
  • the display panel 81 includes: a first substrate, a second substrate disposed opposite the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate.
  • the liquid crystal layer is provided with a plurality of polymer retaining walls, the polymer retaining wall is in contact with the first substrate and the second substrate, and the polymer retaining wall is formed by polymerization of the polymerizable monomer, wherein the polymerizable single is formed.
  • the polymerization direction of the body is perpendicular to the thickness direction of the polymer retaining wall.
  • the display panel 81 is fabricated in the following manner:
  • a display panel is provided; a mask is covered on the display panel; and the mask is irradiated with ultraviolet light to form a polymer retaining wall in the liquid crystal layer corresponding to the hollow region.
  • the polymer retaining wall is in contact with the first substrate and the second substrate, and the polarization direction of the ultraviolet light is perpendicular to the thickness direction of the polymer retaining wall.
  • a polymer retaining wall is formed.
  • a polymer retaining wall is formed at the gap of the pixel region to restrict the flow of the liquid crystal, and the polymerizable monomer is polymerized in a direction perpendicular to the upper and lower substrates to prevent the edge of the polymer retaining wall from being rough due to random reaction of the polymerizable monomer.
  • the display panel and the manufacturing method thereof can be specifically referred to the display panel and the manufacturing method in the above embodiments, and the structure and the manufacturing steps thereof are similar, and details are not described herein again.
  • the present application also provides a liquid crystal medium mixture comprising a liquid crystal material and at least one polymerizable monomer which can undergo polymerization under ultraviolet light irradiation, polymerizable monomers are polymerized under ultraviolet light irradiation, and polymerization is carried out.
  • the reaction proceeds in a direction parallel to the polarization direction of the ultraviolet light to form a barrier wall between the liquid crystals, thereby restricting the flow of the liquid crystal; wherein the polymerizable monomer is the polymerizable monomer in the above embodiment.

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Abstract

一种显示面板（81）及制作方法、液晶显示器（80），显示面板（81）包括第一基板（11）、与第一基板（11）相对设置的第二基板（12）、以及设置于第一基板（11）和第二基板（12）之间的液晶层（13）；其中，液晶层（13）中设置有多个聚合物挡墙（14），聚合物挡墙（14）与第一基板（11）和第二基板（12）接触，聚合物挡墙（14）中的可聚合单体（15）的聚合方向与聚合物挡墙（14）的厚度方向垂直。通过在液晶层（13）设置多个聚合物挡墙（14），限制了液晶层（13）中液晶分子（16）的流动，聚合物挡墙（14）中的可聚合单体（15）的聚合方向具有方向性，改善了聚合物挡墙（14）边缘的粗糙度，从而改善像素边缘漏光，提高显示效果。

Description

一种显示面板及制作方法、液晶显示器 【技术领域】
本申请涉及显示技术领域，特别是涉及一种显示面板及制作方法、液晶显示器。
【背景技术】
近年来，随着显示技术的飞速发展，人们对显示器的需求越来越大，特别是对柔性液晶显示器、曲面液晶显示器、可挠液晶显示器和可折叠液晶显示器等非平面型显示设备的需求日渐增多。但由于这些显示设备在弯曲时面内各处的受力不均，导致液晶流动和盒厚的不均匀，从而引起显示质量降低的问题。在弯曲时维持柔性显示器盒厚均匀性和限制液晶流动成了柔性显示领域的最大难题。
【发明内容】
本申请主要解决的问题是提供一种显示面板及制作方法、液晶显示器，从而限制液晶层中液晶的流动，改善聚合物挡墙边缘粗糙度，从而改善像素边缘漏光，提高显示效果。
为解决上述技术问题，本申请采用的技术方案是提供一种液晶显示器，该液晶显示器包括显示面板和背光源，其中，该显示面板包括第一基板、与第一基板相对设置的第二基板、以及设置于第一基板和第二基板之间的液晶层；其中，液晶层中设置有多个聚合物挡墙，聚合物挡墙包括多个第一方向延伸的第一聚合物挡墙和多个第二方向延伸的第二聚合物挡墙，多个第一聚合物挡墙和多个第二聚合物挡墙相互交错形成网格状；其中，网格状中的每个网格对应一个像素；可聚合单体包括丙烯酸酯、丙烯酸酯衍生物、甲基丙烯酸酯、甲基丙烯酸酯衍生物、肉桂酸酯、香豆素、苯乙烯基吡啶、苯乙烯基苯并吡咯酮、二苯基乙炔中的至少一种。
为解决上述技术问题，本申请采用的另一技术方案是提供一种显示面板，该显示面板包括第一基板、与第一基板相对设置的第二基板、以及设置于第一基板和第二基板之间的液晶层；其中，液晶层中设置有多个聚合物挡墙，聚合物挡墙与第一基板和第二基板接触，聚合物挡墙中的可聚合单体的聚合方向与 聚合物挡墙的厚度方向垂直。
为解决上述技术问题，本申请采用的另一技术方案是提供一种显示面板的制作方法，该显示面板的制作方法包括提供一显示面板；其中，显示面板包括第一基板、与第一基板相对设置的第二基板、以及设置于第一基板和第二基板之间的液晶层，液晶层中设置有可聚合单体；在显示面板上覆盖一掩膜板；其中，掩膜板中设置有镂空区域；采用紫外光对掩膜板进行照射，以在对应镂空区域的液晶层中形成聚合物挡墙。
通过上述方案，本申请的有益效果是：通过在液晶层增加可聚合单体，可聚合单体发生聚合反应形成多个具有方向性的聚合物挡墙，从而限制液晶层中液晶的流动，由于聚合物挡墙中的可聚合单体的聚合方向具有方向性，且聚合的方向与聚合物挡墙的厚度方向垂直，因此，聚合物挡墙边缘不易凸出，较为圆滑改善了聚合物挡墙边缘粗糙度，从而改善像素边缘漏光，提高显示效果。
【附图说明】
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。其中：
图1是本申请提供的显示面板一实施例的结构示意图；
图2是本申请提供的显示面板另一实施例的结构示意图；
图3是本申请提供的显示面板另一实施例的正面剖视图；
图4是本申请提供的显示面板的制作方法一实施例的流程示意图；
图5是本申请提供的显示面板的制作方法一实施例中可聚合单体聚合前的结构示意图；
图6是本申请提供的显示面板的制作方法一实施例中可聚合单体聚合后的结构示意图；
图7是本申请提供的显示面板的制作方法一实施例中掩膜板的结构示意图；
图8是本申请提供的液晶显示器一实施例的结构示意图。
【具体实施方式】
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清 楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性的劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
参阅图1，图1是本申请提供的显示面板一实施例的结构示意图，该图1为显示面板的侧面剖视图，该显示面板包括：
第一基板11、与第一基板11相对设置的第二基板12、以及设置于第一基板11和第二基板12之间的液晶层13。
其中，第一基板11和第一基板12优选为柔性基板，例如透明的塑料基板，也可以为玻璃或其他基板。可选的，在TN(Twisted Nematic)或STN(Super Twisted Nematic)液晶面板中，第一基板11分别包含TFT结构和像素电极层，第二基板12包含公共电极层和彩色滤光片；另外，在IPS(In-Plane Switching，平面转换)液晶面板中，公共电极层也可以设置在第一基板11中，以与像素电极层形成水平电场；另外，在COA(Color Filter On Array)液晶面板中，还可以将彩色滤光片设置在第一基板11中。可以理解的，本实施例的方案对液晶显示面板的种类没有要求，本方案可以应用于所有的液晶显示面板中。
在第一基板11和第一基板12涂布配向层，当使用紫外光照射配向层时，液晶分子16会形成一预倾角，配向层可以是常规使用的聚酰亚胺或者聚酰胺酸等，再在第一基板11和第一基板12上滴加液晶，进行贴合形成液晶盒结构。
然后将第一基板11和第二基板12对盒，在AA(有效显示)区的边缘涂布点胶，形成胶框，将第一基板11和第二基板12粘合在一起。可以理解的，可以在胶框上留有通孔，以便对第一基板11和第二基板12之间的空隙进行抽真空处理，然后从该通孔灌入液晶材料，以形成液晶层13。
液晶层13中所用液晶主体材料为向列相液晶材料，向列相液晶是由长径比很大的棒状分子所组成，具有类似于普通液体的流动性，分子不排列成层，它能上下、左右、前后滑动，只在分子长轴方向上保持相互平行或近于平行。与近晶型液晶相比，向列型液晶的粘度小，富于流动性。
液晶层13中设置有多个聚合物挡墙14，聚合物挡墙14与第一基板11和第二基板接触12，聚合物挡墙14是由可聚合单体15发生聚合反应后形成的，其中的可聚合单体15的聚合方向与聚合物挡墙14的厚度方向垂直。
可以理解的，可聚合单体15具有光反应特性，当受到紫外线(UV)照射时，会发生聚合反应。在进行UV照射时，由于可聚合单体15反应的随机性， 使液晶盒内的可聚合单体15在形成聚合物挡墙14时，聚合物挡墙14的边缘也会形成凸起，导致像素边缘漏光，从而会影响显示效果。
而在本实施例中，可聚合单体15的聚合方向与聚合物挡墙14的厚度方向垂直，换句话说，也就是可聚合单体15的长轴方向与聚合物挡墙14的墙面平行，这样会使得聚合物挡墙14的墙面更加光滑，减小凸起的可能性。
因此，通过上述方式，当可聚合单体15发生沿着特定的方向发生聚合反应后，形成聚合物挡墙14。在像素区域的间隙处形成聚合物挡墙，从而限制液晶的流动，而且可聚合单体15沿着与上下基板垂直的方向进行聚合，防止由于可聚合单体反应随机性造成聚合物挡墙边缘粗糙，减少漏光现象的发生。
可选的，可聚合单体15可以是丙烯酸酯、丙烯酸酯衍生物、甲基丙烯酸酯、甲基丙烯酸酯衍生物、肉桂酸酯、香豆素、苯乙烯基吡啶、苯乙烯基苯并吡咯酮、二苯基乙炔等其中的至少一种。
可聚合单体15的结构为：
Figure PCTCN2018073685-appb-000001
其中，n的取值范围为1-7，A的结构式为以下结构式的其中一种：
Figure PCTCN2018073685-appb-000002
A1、A2为以下结构的其中一种：
R、
Figure PCTCN2018073685-appb-000003
其中，R为C mH 2m+1、OC mH 2m+1、C mH 2m或OC mH 2m中的一种，m为1-30之 间的整数；x1、x2为环丙烷、环丁烷、环戊烷、环己烷、环戊二烯或苯中的一种。
例如，可聚合单体15的结构为：
Figure PCTCN2018073685-appb-000004
区别于现有技术，本实施例提供的显示面板，通过在液晶层增加可聚合单体，可聚合单体发生聚合反应形成多个具有方向性的聚合物挡墙，从而限制液晶层中液晶的流动，由于聚合物挡墙中的可聚合单体的聚合方向具有方向性，且聚合的方向与聚合物挡墙的厚度方向垂直，因此，聚合物挡墙边缘不易凸出，较为圆滑，改善了聚合物挡墙边缘粗糙度，从而改善像素边缘漏光，提高显示效果。
参阅图2和图3，图2是本申请提供的显示面板另一实施例的结构示意图，该显示面板包括：
第一基板11、与第一基板11相对设置的第二基板12、以及设置于第一基板11和第二基板12之间的液晶层13。
在像素区域17中相邻两个像素的间隙处形成聚合物挡墙14，液晶层13中设置有多个聚合物挡墙14，聚合物挡墙14与第一基板11和第二基板接触12，聚合物挡墙14中的可聚合单体15的聚合方向与聚合物挡墙14的厚度方向垂直。
如图3所示，图3为显示面板的正面剖视图，聚合物挡墙14包括多个第一方向延伸的第一聚合物挡墙141和多个第二方向延伸的第二聚合物挡墙142，多个第一聚合物挡墙141和多个第二聚合物挡墙142相互交错形成网格状，可聚合单体15的聚合方向与显示面板平行，其中，网格状中的每个网格对应一个像素。可选的，在一实施例中，第一聚合物挡墙141的延伸方向与第二聚合物挡墙142的延伸方向相互垂直，也可以形成设定的角度。
第一聚合物挡墙141中的可聚合单体15的聚合方向与第一聚合物挡墙141的厚度方向垂直，也就是与第一聚合物挡墙141的墙面平行，第二聚合物挡墙142中的可聚合单体15的聚合方向与第二聚合物挡墙142的厚度方向垂直，也就是与第二聚合物挡墙142的墙面平行。
可以理解的，聚合物挡墙14上下分别与第一基板11和第二基板12接触，其延伸方向与第一基板11和第二基板12平行，其厚度方向也与第一基板11和第二基板12平行。这样，可聚合单体15的聚合方向可以是下面三种情况：
1.如图1或图2所示，可聚合单体15的聚合方向垂直于第一基板11或第二基板12，这样就可以使聚合物挡墙14的墙面没有凸起，更加光滑。
2.如图3所示，可聚合单体15的聚合方向平行于第一基板11或第二基板12，且平行于聚合物挡墙14的延伸方向，这样就可以使聚合物挡墙14的墙面没有凸起，更加光滑。
3.第三种情况就是可聚合单体15的聚合方向仅平行于聚合物挡墙14的墙面，与第一基板11或第二基板12之间形成一定的角度，这样就可以使聚合物挡墙14的墙面没有凸起，更加光滑。
第一聚合物挡墙141与第二聚合物挡墙142相互垂直，相互交织，将像素区域17包围起来，使得液晶分子处于像素区域17，从而限制了液晶分子的流动。在特定紫外光照射到的区域，可聚合单体15形成的形状可以是挡墙式、树枝状的或带有空洞的交联结构，由可聚合单体15的化学性质决定。
区别于现有技术，本实施例提供的显示面板，通过在液晶层增加可聚合单体，可聚合单体发生聚合反应形成多个具有方向性的第一聚合物挡墙和第二聚合物挡墙，第一聚合物挡墙与第二聚合物挡墙相互交错形成网格状，限制了液晶层中液晶的流动，第一聚合物挡墙中的可聚合单体的聚合方向与第二聚合物挡墙中的可聚合单体的聚合方向相互垂直，改善了聚合物挡墙边缘粗糙度，减少了像素边缘漏光，从而提高显示效果。
参阅图4，图4是本申请提供的显示面板的制作方法一实施例的流程示意图，该显示面板的制作方法包括：
步骤41：提供一显示面板。
如图5所示，显示面板包括第一基板11、与第一基板11相对设置的第二基板12、以及设置于第一基板11和第二基板12之间的液晶层13，液晶层13中设置有上述实施例中的可聚合单体15和液晶分子16。
步骤42：在显示面板上覆盖一掩膜板。
步骤43：采用紫外光对掩膜板进行照射，以在对应镂空区域的液晶层中形成聚合物挡墙。
如图6所示，掩膜板18中设置有镂空区域181，为了使得液晶层13中形成聚合物挡墙14，需要利用紫外线照射显示面板，使得在紫外线照射到的区域形成聚合物挡墙14，因此掩膜板18应具有镂空区域181和非镂空区域182。
对显示面板进行特殊波长偏振紫外照射处理，紫外光的波长可以为 300nm～380nm，照射过程需采用掩膜板18进行遮挡，使掩膜板18中镂空区域181可以被紫外光照射到，以便使得液晶层13内可聚合单体15完全反应，聚合反应完成后形成聚合物挡墙14与液晶分子16相分离。
聚合物挡墙14与第一基板11和第二基板12接触，紫外光的偏振方向与聚合物挡墙14的厚度方向垂直，由于聚合物挡墙14中可聚合单体15的聚合方向与聚合物挡墙14的厚度方向垂直，因此聚合物挡墙中14可聚合单体15的聚合方向与紫外光的偏振方向平行，如图6所示，紫外线的偏振方向为垂直于第一基板11和第二基板12，可聚合单体15的聚合方向也垂直于第一基板11和第二基板12。
可以理解的，由于可聚合单体15的聚合方向与紫外光的偏振方向是相同的，因此，紫外光的偏振方向可以参照上述实施例中可聚合单体15的聚合方向，这里不再对紫外光的偏振方向进行赘述。
如图7所示，掩膜板18上设置有多个第一方向延伸的第一镂空区域1811和多个第二方向延伸的第二镂空区域1812，多个第一镂空区域1811和多个第二镂空区域1812相互交错形成网格状；其中，网格状中的每个非镂空区域182对应一个像素。
区别于现有技术，本实施例提供的显示面板的制作方法，通过在显示面板上覆盖一个掩膜板以便形成聚合物挡墙，使得形成的聚合物挡墙限制液晶的流动，且聚合物挡墙中可聚合单体的聚合方向与紫外光的偏振方向平行，使得聚合物挡墙边缘不易出现凸出，边缘较为整齐，从而减少漏光现象的发生。
参阅图8，图8是本申请提供的液晶显示器一实施例的结构示意图，该液晶显示器80包括显示面板81和背光源82。
可选的，在一实施例中，显示面板81包括：第一基板、与第一基板相对设置的第二基板、以及设置于第一基板和第二基板之间的液晶层。
其中，液晶层中设置有多个聚合物挡墙，聚合物挡墙与第一基板和第二基板接触，聚合物挡墙是由可聚合单体发生聚合反应后形成的，其中的可聚合单体的聚合方向与聚合物挡墙的厚度方向垂直。
可选的，在另一实施例中，显示面板81是采用下面的方式制作的：
提供一显示面板；在显示面板上覆盖一掩膜板；采用紫外光对掩膜板进行照射，以在对应镂空区域的液晶层中形成聚合物挡墙。其中，聚合物挡墙与第一基板和第二基板接触，紫外光的偏振方向与聚合物挡墙的厚度方向垂直。
通过上述方式，当可聚合单体发生沿着特定的方向发生聚合反应后，形成聚合物挡墙。在像素区域的间隙处形成聚合物挡墙，从而限制液晶的流动，而且可聚合单体沿着与上下基板垂直的方向进行聚合，防止由于可聚合单体反应随机性造成聚合物挡墙边缘粗糙，减少漏光现象的发生。
可以理解的，上述的显示面板及其制作方法，可以具体参考上述各个实施例中的显示面板和制作方法，其结构和制作步骤类似，这里不再赘述。
本申请还提供一种液晶介质混合物，该液晶介质混合物包括液晶材料以及至少一种在紫外光照射下可发生聚合反应的可聚合单体，在紫外光照射下可聚合单体进行聚合，且聚合反应沿着与紫外光的偏振方向平行的方向进行，以在液晶之间形成挡墙，从而限制液晶流动；其中可聚合单体为上述实施例中的可聚合单体。
以上仅为本申请的实施例，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (19)

  1. 一种液晶显示器，其中，所述液晶显示器包括显示面板和背光源，其中，所述显示面板包括：
    第一基板、与所述第一基板相对设置的第二基板、以及设置于所述第一基板和所述第二基板之间的液晶层；
    其中，所述液晶层中设置有多个聚合物挡墙，所述聚合物挡墙包括多个第一方向延伸的第一聚合物挡墙和多个第二方向延伸的第二聚合物挡墙，所述多个第一聚合物挡墙和所述多个第二聚合物挡墙相互交错形成网格状；其中，所述网格状中的每个网格对应一个像素；所述可聚合单体包括丙烯酸酯、丙烯酸酯衍生物、甲基丙烯酸酯、甲基丙烯酸酯衍生物、肉桂酸酯、香豆素、苯乙烯基吡啶、苯乙烯基苯并吡咯酮、二苯基乙炔中的至少一种。
  2. 根据权利要求1所述的液晶显示器，其中，
    所述聚合物挡墙与所述第一基板和所述第二基板接触，所述聚合物挡墙中的可聚合单体的聚合方向与所述聚合物挡墙的厚度方向垂直。
  3. 根据权利要求2所述的液晶显示器，其中，
    所述第一聚合物挡墙中的可聚合单体的聚合方向与所述第一聚合物挡墙的厚度方向垂直，所述第二聚合物挡墙中的可聚合单体的聚合方向与所述第二聚合物挡墙的厚度方向垂直。
  4. 根据权利要求3所述的液晶显示器，其中，
    所述可聚合单体的聚合方向与所述显示面板平行。
  5. 根据权利要求1所述的液晶显示器，其中，
    所述可聚合单体的结构为：
    Figure PCTCN2018073685-appb-100001
    其中，n的取值范围为1-7，A的结构式为以下结构式的其中一种：
    Figure PCTCN2018073685-appb-100002
    A1、A2为以下结构的其中一种：
    R，
    Figure PCTCN2018073685-appb-100003
    其中，R为C mH 2m+1、OC mH 2m+1、C mH 2m或OC mH 2m中的一种，m为1-30之间的整数；x1、x2为环丙烷、环丁烷、环戊烷、环己烷、环戊二烯或苯中的一种。
  6. 一种显示面板，其中，包括：
    第一基板、与所述第一基板相对设置的第二基板、以及设置于所述第一基板和所述第二基板之间的液晶层；
    其中，所述液晶层中设置有多个聚合物挡墙，所述聚合物挡墙与所述第一基板和所述第二基板接触，所述聚合物挡墙中的可聚合单体的聚合方向与所述聚合物挡墙的厚度方向垂直。
  7. 根据权利要求6所述的显示面板，其中，
    所述聚合物挡墙包括多个第一方向延伸的第一聚合物挡墙和多个第二方向延伸的第二聚合物挡墙，所述多个第一聚合物挡墙和所述多个第二聚合物挡墙相互交错形成网格状；其中，所述网格状中的每个网格对应一个像素。
  8. 根据权利要求7所述的显示面板，其中，
    所述第一聚合物挡墙中的可聚合单体的聚合方向与所述第一聚合物挡墙的厚度方向垂直，所述第二聚合物挡墙中的可聚合单体的聚合方向与所述第二聚合物挡墙的厚度方向垂直。
  9. 根据权利要求8所述的显示面板，其中，
    所述可聚合单体的聚合方向与所述显示面板平行。
  10. 根据权利要求6所述的显示面板，其中，
    所述可聚合单体包括丙烯酸酯、丙烯酸酯衍生物、甲基丙烯酸酯、甲基丙烯酸酯衍生物、肉桂酸酯、香豆素、苯乙烯基吡啶、苯乙烯基苯并吡咯酮、二 苯基乙炔中的至少一种。
  11. 根据权利要求6所述的显示面板，其中，
    所述可聚合单体的结构为：
    Figure PCTCN2018073685-appb-100004
    其中，n的取值范围为1-7，A的结构式为以下结构式的其中一种：
    Figure PCTCN2018073685-appb-100005
    A1、A2为以下结构的其中一种：
    R，
    Figure PCTCN2018073685-appb-100006
    其中，R为C mH 2m+1、OC mH 2m+1、C mH 2m或OC mH 2m中的一种，m为1-30之间的整数；x1、x2为环丙烷、环丁烷、环戊烷、环己烷、环戊二烯或苯中的一种。
  12. 一种显示面板的制作方法，其中，包括：
    提供一显示面板；其中，所述显示面板包括第一基板、与所述第一基板相对设置的第二基板、以及设置于所述第一基板和所述第二基板之间的液晶层，所述液晶层中设置有可聚合单体；
    在所述显示面板上覆盖一掩膜板；其中，所述掩膜板中设置有镂空区域；
    采用紫外光对所述掩膜板进行照射，以在对应所述镂空区域的液晶层中形成聚合物挡墙。
  13. 根据权利要求12所述的制作方法，其中，
    所述掩膜板上设置有多个第一方向延伸的第一镂空区域和多个第二方向延伸的第二镂空区域，所述多个第一镂空区域和所述多个第二镂空区域相互交错形成网格状；其中，所述网格状中的每个非镂空区域对应一个像素。
  14. 根据权利要求12所述的制作方法，其中，
    所述聚合物挡墙包括多个第一方向延伸的第一聚合物挡墙和多个第二方向延伸的第二聚合物挡墙，所述多个第一聚合物挡墙和所述多个第二聚合物挡墙相互交错形成网格状；其中，所述网格状中的每个网格对应一个像素。
  15. 根据权利要求14所述的制作方法，其中，
    所述第一聚合物挡墙中的可聚合单体的聚合方向与所述第一聚合物挡墙的厚度方向垂直，所述第二聚合物挡墙中的可聚合单体的聚合方向与所述第二聚合物挡墙的厚度方向垂直。
  16. 根据权利要求15所述的制作方法，其中，
    所述可聚合单体的聚合方向与所述显示面板平行。
  17. 根据权利要求12所述的制作方法，其中，
    所述可聚合单体包括丙烯酸酯、丙烯酸酯衍生物、甲基丙烯酸酯、甲基丙烯酸酯衍生物、肉桂酸酯、香豆素、苯乙烯基吡啶、苯乙烯基苯并吡咯酮、二苯基乙炔中的至少一种。
  18. 根据权利要求12所述的制作方法，其中，
    所述可聚合单体的结构为：
    Figure PCTCN2018073685-appb-100007
    其中，n的取值范围为1-7，A的结构式为以下结构式的其中一种：
    Figure PCTCN2018073685-appb-100008
    Figure PCTCN2018073685-appb-100009
    A1、A2为以下结构的其中一种：
    R，
    Figure PCTCN2018073685-appb-100010
    其中，R为C mH 2m+1、OC mH 2m+1、C mH 2m或OC mH 2m中的一种，m为1-30之间的整数；x1、x2为环丙烷、环丁烷、环戊烷、环己烷、环戊二烯或苯中的一种。
  19. 根据权利要求12所述的制作方法，其中，
    所述聚合物挡墙与所述第一基板和所述第二基板接触，所述紫外光的偏振方向与所述聚合物挡墙的厚度方向垂直。
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