WO2019184911A1 - 柔性显示面板及其制作方法、显示装置 - Google Patents

柔性显示面板及其制作方法、显示装置 Download PDF

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Publication number
WO2019184911A1
WO2019184911A1 PCT/CN2019/079680 CN2019079680W WO2019184911A1 WO 2019184911 A1 WO2019184911 A1 WO 2019184911A1 CN 2019079680 W CN2019079680 W CN 2019079680W WO 2019184911 A1 WO2019184911 A1 WO 2019184911A1
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Prior art keywords
flexible substrate
flexible
liquid crystal
display panel
polymeric
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PCT/CN2019/079680
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English (en)
French (fr)
Inventor
邹祥祥
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京东方科技集团股份有限公司
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Priority to US16/493,467 priority Critical patent/US11531235B2/en
Publication of WO2019184911A1 publication Critical patent/WO2019184911A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • 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
    • G02F1/133305—Flexible substrates, e.g. plastics, organic film
    • 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
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • 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
    • G02F1/13338—Input devices, e.g. touch panels
    • 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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13398—Spacer materials; Spacer properties
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material

Definitions

  • Embodiments of the present disclosure relate to a flexible display panel, a method of fabricating the same, and a display device.
  • the flexible display panel is widely used in display screens of electronic devices such as mobile phones, personal digital assistants (PDAs), and computers.
  • At least one embodiment of the present disclosure provides a flexible display panel, a method of fabricating the same, and a display device.
  • An embodiment of the present disclosure provides a flexible display panel including a first flexible substrate and a second flexible substrate that are connected to each other, and a liquid crystal display layer and a black matrix network between the first flexible substrate and the second flexible substrate. And a plurality of polymeric walls, the liquid crystal display layer being located in a gap of the plurality of polymeric walls, and the projection of the black matrix mesh on the liquid crystal display layer dividing the liquid crystal display layer into a plurality of arrays Arranged liquid crystal pixel units.
  • the projection of the plurality of polymeric walls on the liquid crystal display layer does not coincide with the projection of the black matrix mesh on the liquid crystal display layer.
  • the plurality of polymeric walls include a plurality of first polymeric walls and a plurality of second polymeric walls, the plurality of first polymeric walls being disposed in parallel with each other, the plurality of second polymeric walls being mutually Parallelly disposed, and the plurality of first polymeric walls and the plurality of second polymeric walls are disposed in a cross.
  • a spacing between two adjacent first polymeric walls is smaller than a side length of the liquid crystal pixel unit, and a spacing between adjacent two second polymeric walls is smaller than a side length of the liquid crystal pixel unit.
  • the flexible display panel further includes a touch layer disposed on a side of the second flexible substrate away from the first flexible substrate.
  • the touch layer has a touch metal mesh therein.
  • the projection of the plurality of polymeric walls on the liquid crystal display layer completely coincides with the projection of the touch metal mesh on the liquid crystal display layer.
  • Another embodiment of the present disclosure also provides a flexible display device including the flexible display panel as described above.
  • a further embodiment of the present disclosure further provides a method for fabricating a flexible display panel, including:
  • a second flexible substrate is disposed on the black matrix grid, and the second flexible substrate is coupled to the first flexible substrate.
  • the polymeric wall is formed using a mask lithography development technique.
  • the manufacturing method of the flexible display panel further includes:
  • a further embodiment of the present disclosure further provides a method for fabricating a flexible display panel, including:
  • Providing a base panel comprising: a first flexible substrate and a second flexible substrate that are connected to each other, and a liquid crystal display layer between the first flexible substrate and the second flexible substrate;
  • a touch layer is formed on a side of the second flexible substrate away from the first flexible substrate by using the mask having a grid pattern.
  • the photolithography is an ultraviolet light etch.
  • FIG. 1 is a top plan view of a flexible display panel according to an embodiment of the present disclosure
  • FIG. 2 is a schematic cross-sectional view of a flexible display panel according to an embodiment of the present disclosure
  • FIG. 3 is a schematic cross-sectional view of a B-B structure of a flexible display panel according to an embodiment of the present disclosure
  • FIG. 4 is a schematic cross-sectional view of a B-B structure of a flexible display panel according to another embodiment of the present disclosure
  • FIG. 5 is a schematic flow chart of a method for fabricating a flexible display panel according to an embodiment of the present disclosure
  • FIG. 6 is a schematic flow chart of a method for fabricating a flexible display panel according to another embodiment of the present disclosure.
  • FIG. 7a is a flowchart of a method for fabricating a flexible display panel according to still another embodiment of the present disclosure.
  • FIG. 7b is a flowchart of a method for fabricating a flexible display panel according to still another embodiment of the present disclosure.
  • FIG. 7c is a flowchart of a method for fabricating a flexible display panel according to still another embodiment of the present disclosure.
  • 7d is a flowchart of a method for fabricating a flexible display panel according to still another embodiment of the present disclosure.
  • FIG. 7e is a flowchart of a method for fabricating a flexible display panel according to still another embodiment of the present disclosure.
  • FIG. 7f is a flow chart of manufacturing a specific flexible display panel according to an embodiment of the present invention.
  • the flexible display panel of the related art generally employs a spacer to ensure the strength of the flexible display panel.
  • the inventors of the present application found in the study that the spacer easily scratches the flexible substrate when bent, resulting in display problems such as light leakage.
  • the flexible display panel includes a first flexible substrate 1 and a second flexible substrate 2 that are connected to each other, and a liquid crystal display layer 3 between the first flexible substrate 1 and the second flexible substrate 2, Black matrix grid 4 and multiple polymeric walls 5.
  • the plurality of polymer walls 5 are disposed in the same layer as the liquid crystal display layer 3, and the projection of the black matrix grid 4 on the liquid crystal display layer 3 divides the liquid crystal display layer 3 into a plurality of liquid crystal pixel units 31 arranged in an array.
  • the flexible display panel provided by the embodiment of the present disclosure is provided with a plurality of polymeric walls 5 in the liquid crystal display layer 3, and the plurality of polymeric walls 5 are formed of a polymer material such as a polymer or a polymer.
  • the polymer wall 5 of the polymer material between the first flexible substrate 1 and the second flexible substrate 2
  • the polymer panel 5 and the first display panel are bent when compared with the spacer used in the prior art.
  • the relative amount of movement between the flexible substrate 1 and the second flexible substrate 2 is small, which reduces damage of the first and second flexible substrates 1 and 2 by the polymeric wall 5, thereby improving the display effect of the flexible display panel.
  • the projection of the plurality of polymeric walls 5 on the liquid crystal display layer 3 does not coincide with the projection of the black matrix grid 4 on the liquid crystal display layer 3.
  • the plurality of polymeric walls 5 include a plurality of first polymeric walls 51 and a plurality of second polymeric walls 52 .
  • the plurality of first polymeric walls 51 are disposed in parallel with each other, and the plurality of second polymeric walls 52 are Arranged in parallel, each of the first polymeric wall 51 and the second polymeric wall 52 are disposed in a cross.
  • the plurality of polymeric walls 5 arranged in parallel and intersecting in a mesh shape can further enhance the strength supporting effect of the polymeric wall 5 on the flexible display panel, and at the same time improve the grasping between the polymeric wall 5 and the first flexible substrate 1 and the second flexible substrate 2, respectively.
  • the polymeric wall 5 is a discontinuous polymeric wall, that is, the first polymeric wall 51 and the second polymeric wall 52 are both intermittent and dotted-shaped polymeric walls.
  • the discontinuous polymeric wall does not affect the differentiation of the black matrix to the liquid crystal pixel unit of the display panel while ensuring the strength of the flexible display panel.
  • the spacing between the adjacent two first polymeric walls 51 is smaller than the side length of the liquid crystal pixel unit 31, and the adjacent two second polymeric walls 52 are The pitch between them is smaller than the side length of the liquid crystal pixel unit 31.
  • the liquid crystal pixel unit 31 is generally rectangular (including a square), and its side length also includes a length and a width; a spacing between adjacent two parallel polymeric walls 51 or 52 is smaller than a side length of the liquid crystal pixel unit 31 (long And wide) can increase the intensity of the display panel as much as possible while ensuring the display effect of the liquid crystal pixel unit.
  • the flexible display panel provided by the embodiment of the present disclosure may further include a touch layer 6 disposed on a surface of the second flexible substrate 2 away from the first flexible substrate 1 .
  • the flexible display panel with the touch layer 6 can realize the control and switching of the display content by means of touch control, further enriching the function of the flexible display panel, and expanding the applicable range of the flexible display panel.
  • the touch layer 6 may have a touch metal mesh 61 therein.
  • the projection of the plurality of polymeric walls 5 on the liquid crystal display layer 3 completely coincides with the projection of the touch metal mesh 61 on the liquid crystal display layer 3.
  • Such an arrangement of the touch metal mesh 61 and the plurality of polymeric walls 5 in which the projections on the liquid crystal display layer 3 are completely coincident can minimize the display loss caused by the blocking of the touch metal mesh 61 and the plurality of polymeric walls 5, Therefore, the display effect of the flexible display panel is improved; in addition, the touch metal mesh 61 and the plurality of polymer walls 5 which form a completely coincident projection on the liquid crystal display layer 3 can be realized by the same mask plate, thereby simplifying the process flow and reducing the production cost. the goal of.
  • Another embodiment of the present disclosure also provides a flexible display device including the flexible display panel as described above.
  • the flexible display device employing the flexible display panel as described above has the same structural features as the flexible display panel, and the same technical effects can be achieved. That is, a plurality of polymer walls 5 are provided in the liquid crystal display layer 3, and the plurality of polymer walls 5 are formed of a polymer material such as a polymer or a polymer.
  • the polymer wall 5 of the polymer material between the first flexible substrate 1 and the second flexible substrate 2 the polymer panel 5 and the first display panel are bent when compared with the spacer used in the prior art.
  • the relative amount of movement between the flexible substrate 1 and the second flexible substrate 2 is small, which reduces damage of the first and second flexible substrates 1 and 2 by the polymeric wall 5, thereby improving the display effect of the flexible display panel.
  • another embodiment of the present disclosure further provides a method for fabricating a flexible display panel, which may include the following steps:
  • Step S1 forming a plurality of polymeric walls on the first flexible substrate
  • Step S2 forming a liquid crystal display layer in a gap between the plurality of polymeric walls;
  • Step S3 forming a black matrix grid on the liquid crystal display layer
  • Step S4 disposing a second flexible substrate on the black matrix grid and connecting the second flexible substrate to the first flexible substrate.
  • a film layer of a polymer polymer material such as a polymer may be deposited on the first flexible substrate, and then a plurality of polymer walls are formed from the film layer by, for example, a mask lithography development technique, so as to
  • the strip polymeric wall for example, as shown in FIG. 1, includes a plurality of first polymeric walls 51 that are parallel to each other and a plurality of second polymeric walls 52 that are parallel to each other and that are disposed across the plurality of first polymeric walls 51.
  • the first polymeric wall 51 and the second polymeric wall 52 are discontinuous polymeric walls such that the projection of the polymeric wall on the first flexible substrate does not coincide with the projection of the black matrix mesh on the first flexible substrate, such as Figure 2 shows.
  • the flexible display panel manufactured by the manufacturing method provided by the embodiment of the present disclosure is provided with a plurality of polymeric walls 5 in the liquid crystal display layer 3, and the plurality of polymeric walls 5 are formed of a polymer material such as a polymer or a polymer.
  • the polymer wall 5 of the polymer material between the first flexible substrate 1 and the second flexible substrate 2
  • the polymer panel 5 and the first display panel are bent when compared with the spacer used in the prior art.
  • the relative amount of movement between the flexible substrate 1 and the second flexible substrate 2 is small, which reduces damage of the first and second flexible substrates 1 and 2 by the polymeric wall 5, thereby improving the display effect of the flexible display panel.
  • the manufacturing method of the flexible display panel provided by this embodiment may further include:
  • Step S5 forming a touch layer on a surface of the second flexible substrate away from the first flexible substrate.
  • a metal layer may be deposited on the surface of the second flexible substrate away from the first flexible substrate and coated with a photoresist, and then exposed and developed using a mask having a grid pattern to form a metal mesh 61 as shown in FIG. Touch layer 6.
  • the forming process of the above touch layer 6 in this embodiment will be described in detail in another embodiment with reference to FIGS. 7a-7e.
  • Another embodiment of the present disclosure further provides a method for fabricating a flexible display panel, which may include the following steps:
  • Step S1 providing a base panel, including a first flexible substrate and a second flexible substrate that are connected to each other, and a liquid crystal display layer between the first flexible substrate and the second flexible substrate;
  • Step S2 forming a polymer wall by using a mask having a grid pattern and performing light etching on the base panel, and the light etching may be, for example, ultraviolet (UV) light etching;
  • UV ultraviolet
  • Step S3 forming a touch layer on a side of the second flexible substrate away from the first flexible substrate by using the mask having a grid pattern.
  • steps S1-S3 can be realized, for example, by the process shown in Figs. 7a-7e.
  • a mask plate 7 having a grid pattern for forming a touch electrode is used on the base panel including the first flexible substrate 1, the second flexible substrate 2, and the liquid crystal display layer 3, which has been completed.
  • Ultraviolet light is applied to form the polymeric wall 5 by light etching in the projected area of the grid pattern on the first flexible substrate (lower substrate).
  • a metal layer 6 is deposited on a side of the second flexible substrate (upper substrate) of the base panel away from the first flexible substrate (lower substrate), and then a layer of negative photoresist is applied. 8.
  • the foregoing negative photoresist 8 is exposed and developed by the mask plate 7 having the mesh pattern formed as described above. Since the negative photoresist 8 is used, the portion irradiated with light will remain.
  • the exposed and developed metal layer 6 is etched to form a touch layer 6 including a touch electrode pattern, that is, a touch layer 6 including a touch metal mesh 61.
  • the negative photoresist 8 is peeled off, and the protective layer 62 is deposited to complete the fabrication of the flexible display panel in which the touch layer 6 is integrated.
  • the forming process of the touch layer and the polymeric wall can be performed using the same mask, and it is not necessary to use an additional mask for the photolithography of the polymeric wall, thereby reducing the entire process.
  • the number of reticle used is reduced, thereby reducing manufacturing costs.
  • the formed polymer wall is located directly under the contact hole metal mesh of the touch layer, and the projection of the plurality of polymer walls on the liquid crystal display layer completely coincides with the projection of the touch metal mesh on the liquid crystal display layer, and the high can be obtained.

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  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
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Abstract

公开了一种柔性显示面板及其制作方法、显示装置。该柔性显示面板包括对合连接的第一柔性基板（1）和第二柔性基板（2），以及位于所述第一柔性基板（1）和第二柔性基板（2）之间的液晶显示层（3）、黑矩阵网格（4）和多条聚合墙（5），所述液晶显示层（3）位于所述多条聚合墙（5）的间隙中，且所述黑矩阵网格（4）在所述液晶显示层（3）上的投影将所述液晶显示层（3）分割成多个阵列排布的液晶像素单元（31）。

Description

柔性显示面板及其制作方法、显示装置 技术领域
本公开的实施例涉及一种柔性显示面板及其制作方法、显示装置。
背景技术
随着显示技术的发展，显示装置的显示效果越来越好，给人们带来了良好的视觉体验。近年来，由于生活水平的提高，人们对显示装置的要求不再仅局限于显示效果，还要求显示装置具有多样化的功能。因此，柔性显示面板被广泛地应用于手机、个人数字助理(PDA)、电脑等电子设备的显示屏中。
发明内容
本公开的至少一个实施例提供了一种柔性显示面板及其制作方法、显示装置。
本公开一实施例提供一种柔性显示面板，包括对合连接的第一柔性基板和第二柔性基板，以及位于所述第一柔性基板和第二柔性基板之间的液晶显示层、黑矩阵网格和多条聚合墙，所述液晶显示层位于所述多条聚合墙的间隙中，且所述黑矩阵网格在所述液晶显示层上的投影将所述液晶显示层分割成多个阵列排布的液晶像素单元。
在可选的实施例中，所述多条聚合墙在所述液晶显示层上的投影与所述黑矩阵网格在所述液晶显示层上的投影不重合。
在可选的实施例中，所述多条聚合墙包括多条第一聚合墙和多条第二聚合墙，所述多条第一聚合墙彼此平行设置，所述多条第二聚合墙彼此平行设置，并且所述多条第一聚合墙和所述多条第二聚合墙交叉设置。
在可选的实施例中，相邻的两条第一聚合墙的间距小于所述液晶像素单元的边长，相邻的两条第二聚合墙的间距小于所述液晶像素单元的边长。
在可选的实施例中，柔性显示面板还包括设置于所述第二柔性基板远离所述第一柔性基板一侧的触控层。
在可选的实施例中，所述触控层内具有触控金属网。
在可选的实施例中，所述多条聚合墙在所述液晶显示层上的投影与所述 触控金属网在所述液晶显示层上的投影完全重合。
本公开的另一实施例还提供了一种柔性显示装置，包括如上所述的柔性显示面板。
本公开的又一实施例还提供了一种柔性显示面板的制作方法，包括：
提供第一柔性基板，
在第一柔性基板上形成多条聚合墙；
在所述第一柔性基板表面的多条聚合墙间隙内形成液晶显示层；
在所述液晶显示层上形成黑矩阵网格；
在所述黑矩阵网格上设置第二柔性基板，且将所述第二柔性基板与所述第一柔性基板对合连接。
在可选的实施例中，采用掩模板光刻显影技术形成所述聚合墙。
在可选的实施例中，所述柔性显示面板的制作方法还包括：
在所述第二柔性基板远离所述第一柔性基板的一侧形成触控层。
本公开的再一实施例还提供了一种柔性显示面板的制作方法，包括：
提供基础面板，所述基础面板包括对合连接的第一柔性基板和第二柔性基板，以及位于所述第一柔性基板和第二柔性基板之间的液晶显示层；
使用具有网格图案的掩模板、对所述基础面板进行光照刻蚀，在所述第一柔性面板上形成聚合墙；
通过使用所述具有网格图案的掩模板、在所述第二柔性基板远离所述第一柔性基板的一侧形成触控层。
在可选的实施例中，所述光照刻蚀为紫外光照刻蚀。
附图说明
本发明的上述和/或其他方面及优点将从结合下面附图对实施例的描述中变得明显和容易理解，其中：
图1为本公开一实施例提供的柔性显示面板的俯视图；
图2为本公开一实施例提供的柔性显示面板的A-A截面结构示意图；
图3为本公开一实施例提供的柔性显示面板的B-B截面结构示意图；
图4为本公开另一实施例提供的柔性显示面板的B-B截面结构示意图；
图5为本公开一实施例提供的柔性显示面板的制作方法的流程示意图；
图6为本公开另一实施例提供的柔性显示面板的制作方法的流程示意 图；
图7a为本公开再一实施例提供的柔性显示面板的制作方法的流程图；
图7b为本公开再一实施例提供的柔性显示面板的制作方法的流程图；
图7c为本公开再一实施例提供的柔性显示面板的制作方法的流程图；
图7d为本公开再一实施例提供的柔性显示面板的制作方法的流程图；
图7e为本公开再一实施例提供的柔性显示面板的制作方法的流程图；以及
图7f为本发明实施例中一具体柔性显示面板的制作流程图。
具体实施方式
为使本发明的实施例的目的、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的实施例的技术方案进行清楚、完整的描述。显然，所描述的实施例仅是本发明的一部分示例性实施例，而不是全部的实施例。基于所描述的本发明的示例性实施例，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它实施例都属于本发明的保护范围。
除非另作定义，此处使用的技术术语或者科学术语应当为本发明所属领域内具有一般技能的人士所理解的通常意义。本发明专利申请说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”、“一”或者“该”等类似词语也不表示数量限制，而是表示存在至少一个。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“上”、“下”、等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
相关技术中的柔性显示面板一般采用隔垫物来保证柔性显示面板的强度。然而，本申请的发明人在研究中发现，隔垫物在弯折时容易划伤柔性基板，从而导致漏光等显示问题。
为克服上述缺陷，本公开的至少一个实施例提供一种柔性显示面板。如图1-3所示，该柔性显示面板包括对合连接的第一柔性基板1和第二柔性基板2，以及位于第一柔性基板1和第二柔性基板2之间的液晶显示层3、黑矩阵网格4和多条聚合墙5。多条聚合墙5与液晶显示层3同层设置，且黑矩 阵网格4在液晶显示层3上的投影将液晶显示层3分割成多个阵列排布的液晶像素单元31。
本公开实施例提供的柔性显示面板在液晶显示层3内设有多条聚合墙5，并且多条聚合墙5采用多聚物、聚合物等高分子材料形成。由此，通过在第一柔性基板1和第二柔性基板2之间设置高分子材料的聚合墙5，相对于现有技术中使用的隔垫物，显示面板发生弯折时聚合墙5与第一柔性基板1、第二柔性基板2之间的相对活动量较小，降低了聚合墙5对第一和第二柔性基板1、2的损伤，从而提高柔性显示面板的显示效果。
如图1和图2所示，在本公开实施例提供的柔性显示面板中，多条聚合墙5在液晶显示层3上的投影与黑矩阵网格4在液晶显示层3上的投影不重合。例如，如图1所示，多条聚合墙5包括多条第一聚合墙51和多条第二聚合墙52，多条第一聚合墙51之间平行设置，多条第二聚合墙52之间平行设置，每条第一聚合墙51和第二聚合墙52交叉设置。平行且交叉呈网状设置的多条聚合墙5能够进一步提高聚合墙5对柔性显示面板的强度支撑作用，同时提高聚合墙5分别与第一柔性基板1和第二柔性基板2之间的抓合力。
如图2所示，本公开实施例提供的柔性显示面板中，聚合墙5为不连续聚合墙，即：上述第一聚合墙51和第二聚合墙52均为断断续续呈虚线状的聚合墙。不连续的聚合墙在保证柔性显示面板的强度的同时，不会影响黑矩阵对显示面板液晶像素单元的区分。
例如，在本公开实施例提供的柔性显示面板中，相邻的两条第一聚合墙51之间的间距小于所述液晶像素单元31的边长，相邻的两条第二聚合墙52之间的间距小于所述液晶像素单元31的边长。所述液晶像素单元31一般呈矩形(包括正方形)，其边长也包括长和宽；相邻的两条平行聚合墙51或52之间的间距小于所述液晶像素单元31的边长(长和宽)能够在保证液晶像素单元的显示效果的同时尽可能地提高显示面板的强度。
如图4所示，本公开实施例提供的柔性显示面板还可包括设置于第二柔性基板2远离第一柔性基板1一侧表面的触控层6。具有触控层6的柔性显示面板能够采用触摸控制的方式实现显示内容的控制和切换，进一步丰富了柔性显示面板的功能，拓展了柔性显示面板的适用范围。
例如，仍参见图4，在本公开实施例提供的柔性显示面板中，触控层6内可具有触控金属网61。多条聚合墙5在液晶显示层3上的投影与触控金属 网61在液晶显示层3上的投影完全重合。在液晶显示层3上的投影完全重合的触控金属网61和多条聚合墙5的这种布置能够最大限度上减少因为触控金属网61和多条聚合墙5的遮挡造成的显示损失，从而提高柔性显示面板的显示效果；此外，在液晶显示层3上形成投影完全重合的触控金属网61和多条聚合墙5可采用同一块掩模板实现，从而达到简化工艺流程和降低生产成本的目的。
本公开另一实施例还提供了一种柔性显示装置，包括如上所述的柔性显示面板。采用了如上所述的柔性显示面板的柔性显示装置具有与柔性显示面板相同的结构特征，并且可以实现相同的技术效果。即：在液晶显示层3内设有多条聚合墙5，并且多条聚合墙5采用多聚物、聚合物等高分子材料形成。由此，通过在第一柔性基板1和第二柔性基板2之间设置高分子材料的聚合墙5，相对于现有技术中使用的隔垫物，显示面板发生弯折时聚合墙5与第一柔性基板1、第二柔性基板2之间的相对活动量较小，降低了聚合墙5对第一和第二柔性基板1、2的损伤，从而提高柔性显示面板的显示效果。
参考图5，本公开另一实施例还提供了一种柔性显示面板的制作方法，可包括以下步骤：
步骤S1：在第一柔性基板上形成多条聚合墙；
步骤S2：在多条聚合墙的间隙内形成液晶显示层；
步骤S3：在液晶显示层上形成黑矩阵网格；
步骤S4：在黑矩阵网格上设置第二柔性基板且将第二柔性基板与第一柔性基板对合连接。
例如，步骤S1中，可在第一柔性基板上沉积例如多聚物的聚合物高分子材料的膜层，然后通过例如掩模板光刻显影技术由该膜层形成多条聚合墙，以使得多条聚合墙例如如图1所示包括彼此平行的多条第一聚合墙51以及彼此平行并且与多条第一聚合墙51交叉布置的多条第二聚合墙52。例如，第一聚合墙51和第二聚合墙52为不连续的聚合墙，以使得聚合墙在第一柔性基板上的投影与黑矩阵网格在第一柔性基板上的投影不存在重合，如图2所示。
在此需要说明的是，本实施例中省略的详细工艺步骤均可通过本领域技术人员已知的工艺方法实现。例如，上述掩模板光刻显影技术以及液晶显示层和黑矩阵网格的形成等都为本领域已知技术，在此不做赘述。
采用根据本公开实施例提供的该制作方法制作的柔性显示面板在液晶显示层3内设有多条聚合墙5，并且多条聚合墙5采用多聚物、聚合物等高分子材料形成。由此，通过在第一柔性基板1和第二柔性基板2之间设置高分子材料的聚合墙5，相对于现有技术中使用的隔垫物，显示面板发生弯折时聚合墙5与第一柔性基板1、第二柔性基板2之间的相对活动量较小，降低了聚合墙5对第一和第二柔性基板1、2的损伤，从而提高柔性显示面板的显示效果。
如图6所示，本实施例提供的柔性显示面板的制作方法还可包括：
步骤S5：在第二柔性基板远离第一柔性基板的表面形成触控层。例如，可在第二柔性基板远离第一柔性基板的表面沉积金属层并涂覆光刻胶，然后使用具有网格图案的掩模板进行曝光显影以形成如图4中所示的具有金属网61的触控层6。本实施例中上述触控层6的形成工艺将在参照图7a-7e的另一实施例中详细描述。
本公开另一实施例还提供了一种柔性显示面板的制作方法，可包括以下步骤：
步骤S1：提供基础面板，包括对合连接的第一柔性基板和第二柔性基板以及位于所述第一柔性基板和第二柔性基板之间的液晶显示层；
步骤S2：使用具有网格图案的掩模板、对所述基础面板进行光照刻蚀形成聚合墙，所述光照刻蚀例如可为紫外(UV)光照刻蚀；
步骤S3，通过使用所述具有网格图案的掩模板、在所述第二柔性基板远离第一柔性基板一侧形成触控层。
在实际的生产过程中，上述步骤S1-S3例如可通过如图7a-7e所示的工艺过程实现。
如图7a所示，在已经制作完成的包括第一柔性基板1、第二柔性基板2和液晶显示层3的基础面板上，利用用于形成触控电极的、具有网格图案的掩模板7进行紫外光照，从而在第一柔性基板(下基板)上该网格图案的投影区域中通过光照刻蚀形成聚合墙5。
如图7b和图7c所示，在基础面板的第二柔性基板(上基板)远离第一柔性基板(下基板)的一侧沉积一层金属层6，然后涂覆一层负性光刻胶8。
如图7d所示，利用前述形成聚合墙5的、具有网格图案的掩模板7对前述负性光刻胶8进行曝光和显影。由于采用的是负性光刻胶8，被光照射 的部分将留下。
如图7e所示，对经过曝光和显影的金属层6进行刻蚀，形成包括触控电极图形的触控层6，即包括触控金属网61的触控层6。
如图7f所示，剥离负性光刻胶8，并沉积保护层62，完成集成了触控层6的柔性显示面板的制作。
本领域技术人员应理解的是，在本实施例中省略的工艺步骤，例如黑矩阵网格的形成等，可参照前述实施例中的相关描述，在此不做赘述。
在根据本实施例的柔性显示面板的制作方法中，触控层和聚合墙的形成工艺可使用同一掩模板执行，不需要针对聚合墙的光照刻蚀使用额外的掩模板，减少了整个工艺过程中掩模板的使用数量，从而降低了制造成本。而且，所形成的聚合墙位于触控层的触孔金属网的正下方，并且多条聚合墙在液晶显示层上的投影与触控金属网在液晶显示层上的投影完全重合，可获得高开口率的柔性显示面板。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。
本申请要求于2018年3月27日递交的中国专利申请第201810260368.X号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (13)

  1. 一种柔性显示面板，包括：对合连接的第一柔性基板和第二柔性基板，以及位于所述第一柔性基板和第二柔性基板之间的液晶显示层、黑矩阵网格和多条聚合墙，
    所述液晶显示层位于所述多条聚合墙的间隙中，且所述黑矩阵网格在所述液晶显示层上的投影将所述液晶显示层分割成多个阵列排布的液晶像素单元。
  2. 根据权利要求1所述的柔性显示面板，其中，所述多条聚合墙在所述液晶显示层上的投影与所述黑矩阵网格在所述液晶显示层上的投影不重合。
  3. 根据权利要求1所述的柔性显示面板，其中，所述多条聚合墙包括多条第一聚合墙和多条第二聚合墙，所述多条第一聚合墙彼此平行设置，所述多条第二聚合墙彼此平行设置，并且所述多条第一聚合墙和所述多条第二聚合墙交叉设置。
  4. 根据权利要求1所述的柔性显示面板，其中，相邻的两条第一聚合墙的间距小于所述液晶像素单元的边长，相邻的两条第二聚合墙的间距小于所述液晶像素单元的边长。
  5. 根据权利要求1所述的柔性显示面板，还包括设置于所述第二柔性基板远离所述第一柔性基板一侧的触控层。
  6. 根据权利要求5所述的柔性显示面板，其中，所述触控层内具有触控金属网。
  7. 根据权利要求6所述的柔性显示面板，其中，所述多条聚合墙在所述液晶显示层上的投影与所述触控金属网在所述液晶显示层上的投影完全重合。
  8. 一种显示装置，包括如权利要求1～7中任一项所述的柔性显示面板。
  9. 一种柔性显示面板的制作方法，包括：
    提供第一柔性基板，
    在第一柔性基板上形成多条聚合墙；
    在所述第一柔性基板表面的多条聚合墙间隙内形成液晶显示层；
    在所述液晶显示层上形成黑矩阵网格；
    在所述黑矩阵网格上设置第二柔性基板，且将所述第二柔性基板与所述第一柔性基板对合连接。
  10. 根据权利要求9所述的柔性显示面板的制作方法，其中，采用掩模板光刻显影技术形成所述聚合墙。
  11. 根据权利要求9或10所述的柔性显示面板的制作方法，还包括：
    在所述第二柔性基板远离所述第一柔性基板的一侧形成触控层。
  12. 一种柔性显示面板的制作方法，包括：
    提供基础面板，所述基础面板包括对合连接的第一柔性基板和第二柔性基板，以及位于所述第一柔性基板和第二柔性基板之间的液晶显示层；
    使用具有网格图案的掩模板、对所述基础面板进行光照刻蚀，在所述第一柔性面板上形成聚合墙；
    通过使用所述具有网格图案的掩模板、在所述第二柔性基板远离所述第一柔性基板的一侧形成触控层。
  13. 根据权利要求12所述的柔性显示面板的制作方法，其中，所述光照刻蚀为紫外光照刻蚀。
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