WO2017084366A1 - 触摸屏及其制作方法、显示装置 - Google Patents

触摸屏及其制作方法、显示装置 Download PDF

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Publication number
WO2017084366A1
WO2017084366A1 PCT/CN2016/090188 CN2016090188W WO2017084366A1 WO 2017084366 A1 WO2017084366 A1 WO 2017084366A1 CN 2016090188 W CN2016090188 W CN 2016090188W WO 2017084366 A1 WO2017084366 A1 WO 2017084366A1
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Prior art keywords
touch
electroluminescent pixel
touch screen
pixel unit
electrode
Prior art date
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PCT/CN2016/090188
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English (en)
French (fr)
Inventor
刘伟
董学
陈小川
王海生
丁小梁
杨盛际
刘英明
赵卫杰
刘红娟
李昌峰
王鹏鹏
薛海林
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Priority to US15/513,424 priority Critical patent/US10895937B2/en
Publication of WO2017084366A1 publication Critical patent/WO2017084366A1/zh

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    • 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
    • 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • 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
    • 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
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • 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
    • G06F3/0448—Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/844—Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40—OLEDs integrated with touch screens
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H10K50/82—Cathodes
    • H10K50/822—Cathodes characterised by their shape
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/805—Electrodes
    • H10K59/8052—Cathodes
    • H10K59/80522—Cathodes combined with auxiliary electrodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

Definitions

  • Embodiments of the present invention relate to a touch screen, a method of fabricating the same, and a display device.
  • OLEDs are display devices molded by organic materials, which have the advantages of low operating voltage, fast response, high luminous efficiency, wide viewing angle and wide operating temperature range. It is good for thin and light display, low power consumption and surface design of the display device.
  • OLED-based touch products mostly adopt an external touch structure as shown in FIG.
  • the OLED display panel 01 and the touch panel 02 are separately fabricated, and the two panels are bonded together by the adhesive material 03 to form a complete touch display device.
  • the external touch structure may cause an increase in the thickness of the entire OLED device, which is disadvantageous for The product is light and thin.
  • the embodiment of the present invention provides a touch screen, a manufacturing method thereof, and a display device, which are used to solve the problem that the current OLED-based touch product is not conducive to thin and light design.
  • At least one embodiment of the present invention provides a touch screen comprising: a substrate, an electroluminescent pixel unit arranged in an array on the substrate, arranged in an array on the electroluminescent pixel unit The touch electrode, wherein the electroluminescent pixel unit and the touch electrode are insulated from each other.
  • the orthographic projection of the pattern of each of the touch electrodes on the substrate substrate covers at least one of the electroluminescent pixel units.
  • the pattern of each of the touch electrodes has a hollowed out area.
  • an orthographic projection of a pattern of each of the touch electrodes on the substrate is located at a gap of the electroluminescent pixel unit.
  • the orthographic projection of the pattern of each of the touch electrodes on the substrate is a projection of the electroluminescent pixel unit on the substrate.
  • the shadow acts as a grid structure of the mesh.
  • each of the electroluminescent pixel units includes at least an anode, a light emitting layer, and a cathode.
  • the cathodes of each of the electroluminescent pixel units are independent of each other, and are connected to each other by wires located at the gaps of the respective electroluminescent pixel units.
  • the touch screen provided by the embodiment of the present invention further includes: an electrode lead line connected to the touch electrode, and an orthographic projection of the electrode lead line on the base substrate is located at a gap of the electroluminescent pixel unit.
  • the electrode lead line is disposed in the same layer as the touch electrode.
  • the material of the touch electrode is nano silver, graphene, or a doped metal material.
  • the touch screen provided by the embodiment of the present invention further includes: an insulating layer disposed between the electroluminescent pixel unit and the touch electrode.
  • the touch screen provided by the embodiment of the present invention further includes: a polymer film disposed between the electroluminescent pixel unit and the touch electrode and encapsulated outside the electroluminescent pixel unit.
  • the touch screen is a flexible touch screen.
  • At least one embodiment of the present invention also provides a display device including the touch panel described above.
  • At least one embodiment of the present invention further provides a method of fabricating a touch screen, comprising: providing a substrate; forming an electroluminescent pixel unit in an array on the substrate; forming on the electroluminescent pixel unit The touch electrodes are arranged in an array; wherein the touch electrodes and the electroluminescent pixel units are insulated from each other.
  • a method for fabricating a touch screen includes: forming the touch electrode by a method of inkjet printing.
  • the method before the forming the touch electrode by the method of inkjet printing, the method further includes: forming an insulating layer on the electroluminescent pixel unit, and The surface of the insulating layer is roughened.
  • the method further includes: forming the package in the electroluminescent pixel unit The outer polymer film is subjected to a roughening treatment on the surface of the polymer film.
  • forming the electroluminescent pixel unit includes: sequentially forming an anode, a light emitting layer, and a cathode on the base substrate.
  • the cathode patterns of the electroluminescent pixel units are independent of each other and are connected to each other by wires located at the gaps of the electroluminescent pixel units.
  • FIG. 1 is a schematic structural diagram of an OLED-based touch product
  • FIG. 2a is a schematic structural diagram of a touch screen according to an embodiment of the present invention.
  • 2b is a schematic structural diagram of a touch screen according to another embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a touch panel and an electrode lead line disposed in the same layer in a touch screen according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a touch panel and an electrode lead line disposed in the same layer in a touch screen according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a cathode and a touch electrode in a touch screen according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a different arrangement of a touch electrode and an electrode lead line in a touch screen according to an embodiment of the invention.
  • FIG. 2a is a schematic structural diagram of a touch screen according to an embodiment of the present invention
  • FIG. 2b is a schematic structural diagram of a touch screen according to another embodiment of the present invention.
  • the touch screen includes: a substrate substrate 100, disposed at The plurality of electroluminescent pixel units 200 arranged in an array on the substrate substrate 100 are disposed on the electroluminescent pixel unit 200 in an array of touch electrodes 300.
  • the touch electrodes 300 and the electroluminescent pixel units are disposed. 200 is insulated from each other.
  • the touch electrodes 300 arranged in an array are disposed in the OLED display panel, are disposed on the electroluminescent pixel unit 200, and are insulated from the electroluminescent pixel unit 200, so that the touch screen can be obtained. Reducing the thickness of the touch display device facilitates the thin and light design of the product.
  • a transparent cover 400 is generally disposed on the touch electrode 300.
  • the transparent cover 400 can protect the screen, and can also block water and oxygen from invading the electroluminescent pixel unit 200, thereby reducing the influence of water and oxygen on the display function.
  • the electroluminescent is further disposed in the touch screen.
  • electroluminescence can also be performed in the touch screen provided by the embodiment of the present invention.
  • a polymer film 600 encapsulated on the outside of the electroluminescent pixel unit 200 is disposed between the pixel unit 200 and the touch electrode 300 to eliminate or reduce the external environment while insulating the electroluminescent pixel unit 200 and the touch electrode 300 from each other. Infringement of the electroluminescent pixel unit 200.
  • the touch screen provided by the embodiment of the present invention can also be fabricated as a flexible touch screen. Accordingly, the polymer film 600 and the transparent cover 400 encapsulated on the outside of the electroluminescent pixel unit 200 are made of a flexible material.
  • the touch electrode 300 can be formed by inkjet printing, and the inkjet printing method can simplify the process of manufacturing the touch electrode 300 and reduce the production cost.
  • the touch electrode 300 can be formed using a material such as nano silver, graphene, or a doped metal solution as a printing solution. That is, the material of the touch electrode 300 is nano silver, graphene, or a doped metal material.
  • the selection of the material of the touch electrode 300 affects the touch.
  • Screen transmittance For example, when the touch electrode 300 is prepared by using a solution having a higher transmittance, the pattern of the touch electrode 300 can be selected to be formed in the open area of the electroluminescent pixel unit 200, that is, the pattern of each touch electrode 300 is The orthographic projection on the base substrate 100 covers at least one electroluminescent pixel unit 200.
  • each touch electrode 300 may be partially hollowed out, that is, the patterns of the touch electrodes 300 respectively have a hollow area 310.
  • the pattern of each of the touch electrodes 300 needs to be formed into a gap between the electroluminescent pixel units 200, that is, the pattern of each touch electrode 300 is
  • the orthographic projection on the base substrate 100 is located at the gap of the electroluminescent pixel unit 200, for example, only within the gap of the electroluminescent pixel unit 200, thereby ensuring minimization of the influence of the touch electrode 300 on the display aperture ratio.
  • FIG. 4 is a schematic structural diagram of a touch panel and an electrode lead line disposed in the same layer in a touch screen according to another embodiment of the present invention.
  • the pattern of each touch electrode 300 can be formed such that the orthographic projection on the base substrate 100 is a mesh with the orthographic projection of the electroluminescent pixel unit 200 on the substrate as a mesh. Grid structure.
  • each electroluminescent pixel unit 200 includes at least an anode 210, a light emitting layer 220, and a cathode 230.
  • the parasitic capacitance of the touch electrode 300 can be reduced by reducing the overlap area between the cathode 230 and the touch electrode 300.
  • the cathode 230 that covers the entire surface of the base substrate 100 can be electrically charged.
  • the illuminating pixel unit performs division, that is, the cathodes 230 of the respective electroluminescent pixel units 200 are independent of each other, and the cathodes 230 of the electroluminescent pixel units 200 that are independent of each other pass through the wires located at the gaps of the electroluminescent pixel units 200. Connections ensure that electrical signals can be transmitted between all cathodes 230.
  • the overlapping area between the touch electrode 300 and the cathode 230 can be reduced to reduce the parasitic capacitance of the touch electrode 300 while ensuring the aperture ratio of the touch screen display.
  • each touch electrode 300 can be set as a single layer or as a plurality of layers, and can be touch-detected by means of mutual capacitance, or can be touched by self-capacitance. Control detection.
  • the shape of the outer contour of each touch electrode 300 is not specifically limited.
  • the shape of the outer contour of each touch electrode 300 may be a rectangle, a triangle, a diamond, or the like.
  • the touch screen may further include an electrode lead line 700 connected to the touch electrode 300 for loading the corresponding electric signal on the touch electrode 300 .
  • the pole lead wires 700 are disposed at the gaps between the electroluminescent pixel units 200, that is, the orthographic projections of the electrode lead wires 700 on the base substrate 100 are located at the gaps between the electroluminescent pixel units 200.
  • the electrode lead line 700 can be disposed in the same layer as the touch electrode 300, thereby reducing the total number of layers in the touch screen, but also There will be a certain touch dead zone.
  • an inductive signal is generated at the position of the touch electrode 300 and the position of the connected electrode lead line 700, and the area where the electrode lead line 700 is located may be counted in advance.
  • the electrode lead wire 700 and the touch electrode 300 may be disposed in different layers, that is, all the electrode lead wires 700 are introduced into other films. The layers are routed, and then the electrode lead wires 700 are electrically connected to the corresponding touch electrodes 300 by via connection.
  • Embodiments of the present invention provide a method of fabricating a touch screen, including: providing a substrate; forming an electroluminescent pixel unit arranged in an array on the substrate; forming an array in the electroluminescent pixel unit The touch electrode; wherein the electroluminescent pixel unit and the touch electrode are insulated from each other.
  • the touch electrode when a touch electrode insulated from the electroluminescent pixel unit is formed on the electroluminescent pixel unit, the touch electrode can be formed by inkjet printing, and the inkjet printing is adopted.
  • the method can effectively simplify the process of manufacturing the touch electrode and reduce the production cost.
  • a material such as nano silver, graphene, or a doped metal solution can be used as a printing solution to form a touch electrode.
  • the two do not affect each other.
  • An insulating layer is formed over the electroluminescent pixel unit, or a polymer film encapsulated on the outside of the electroluminescent pixel unit is formed.
  • the surface of the insulating layer or the polymer film is roughened after the formation of the insulating layer or the polymer film. After the roughening treatment, the surface of the insulating layer or the polymer film is relatively easy to be printed and produced.
  • the roughening treatment may be performed optically or electrically or thermodynamically, which is not limited herein.
  • the operation of forming the electroluminescent pixel unit on the base substrate may include the following steps: sequentially forming an anode and a hair on the substrate.
  • the pattern of the light layer and the cathode, for example, the cathode patterns of the respective electroluminescent pixel units may be independent of each other and connected to each other by wires located at the gaps of the respective electroluminescent pixel units.
  • Embodiments of the present invention provide a display device including the touch panel described above.
  • the display device can be any product or component having a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • a display device refer to the example of the touch screen in the above, and the repeated description is not repeated.
  • the touch screen provided in the array of the present invention is disposed on the OLED display panel and disposed on the electroluminescent pixel unit and interacts with the electroluminescent pixel unit. Insulation, which can reduce the thickness of the touch display device, which is beneficial to the thin and light design of the product.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Manufacturing & Machinery (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种触摸屏及其制作方法、显示装置，该触摸屏包括：衬底基板(100)，设置在所述衬底基板(100)上呈阵列排布的电致发光像素单元(200)，设置于所述电致发光像素单元(200)上呈阵列排布的触控电极(300)，其中，所述电致发光像素单元(200)与所述触控电极(300)相互绝缘。将呈阵列排布的触控电极(300)设置于电致发光像素单元(200)之上且与电致发光像素单元(200)相互绝缘，这样可以降低触控显示装置的厚度，有利于产品的轻薄化设计。

Description

触摸屏及其制作方法、显示装置 技术领域
本发明的实施例涉及一种触摸屏及其制作方法、显示装置。
背景技术
有机电致发光显示面板(Organic light-emitting diodes，OLED)是一种利用有机材料封装成型的显示器件，其具有工作电压低、响应速度快、发光效率高、视角广和工作温度范围广等优点，利于显示器件的轻薄化、低功耗和曲面设计。
目前，基于OLED的触控产品大多采用如图1所示的外挂式触控结构。分别制作OLED显示面板01和触控面板02，利用胶材03将两个面板贴合后形成完整的触控显示装置，但是这种外挂式触控结构会导致OLED装置整体的厚度增加，不利于产品的轻薄化设计。
发明内容
本发明的实施例提供了一种触摸屏及其制作方法、显示装置，用以解决目前基于OLED的触控产品不利于轻薄化设计的问题。
本发明至少一个实施例提供一种触摸屏，包括：衬底基板，设置在所述衬底基板上呈阵列排布的电致发光像素单元，设置于所述电致发光像素单元上呈阵列排布的触控电极，其中，所述电致发光像素单元与所述触控电极相互绝缘。
例如，在本发明的实施例提供的触摸屏中，各所述触控电极的图案在所述衬底基板上的正投影覆盖至少一个所述电致发光像素单元。
例如，在本发明的实施例提供的触摸屏中，各所述触控电极的图案具有镂空区域。
例如，在本发明的实施例提供的触摸屏中，各所述触控电极的图案在所述衬底基板上的正投影位于所述电致发光像素单元的间隙处。
例如，在本发明的实施例提供的触摸屏中，各所述触控电极的图案在所述衬底基板上的正投影为以所述电致发光像素单元在所述衬底基板上的投 影作为网孔的网格状结构。
例如，在本发明的实施例提供的触摸屏中，各所述电致发光像素单元至少包含阳极、发光层和阴极。
例如，在本发明的实施例提供的触摸屏中，各所述电致发光像素单元的阴极相互独立，且通过位于各所述电致发光像素单元间隙处的导线相互连接。
例如，本发明的实施例提供的触摸屏还包括：与所述触控电极连接的电极引出线，所述电极引出线在衬底基板上的正投影位于所述电致发光像素单元的间隙处。
例如，在本发明的实施例提供的触摸屏中，所述电极引出线与所述触控电极同层设置。
例如，在本发明的实施例提供的触摸屏中，所述触控电极的材料为纳米银、石墨烯、或掺杂金属材料。
例如，本发明的实施例提供的触摸屏还包括：设置于所述电致发光像素单元与所述触控电极之间的绝缘层。
例如，本发明的实施例提供的触摸屏还包括：设置于所述电致发光像素单元与所述触控电极之间且封装于所述电致发光像素单元外侧的聚合物薄膜。
例如，在本发明的实施例提供的触摸屏中，所述触摸屏为柔性触摸屏。
本发明至少一个实施例还提供一种显示装置，包括上述中的触摸屏。
本发明至少一个实施例还提供一种触摸屏的制作方法，包括：提供衬底基板；在所述衬底基板上形成呈阵列排布电致发光像素单元；在所述电致发光像素单元上形成呈阵列排布的触控电极；其中，所述触控电极与所述电致发光像素单元相互绝缘。
例如，本发明的实施例提供的触摸屏的制作方法，包括：采用喷墨打印的方法形成所述触控电极。
例如，在本发明的实施例提供的触摸屏的制作方法中，在采用喷墨打印的方法形成所述触控电极之前，还包括：在所述电致发光像素单元上形成绝缘层，并对所述绝缘层的表面进行粗糙处理。
例如，在本发明的实施例提供的触摸屏的制作方法中，在采用喷墨打印的方法形成所述触控电极之前，还包括：形成封装于所述电致发光像素单元 外侧的聚合物薄膜，并对所述聚合物薄膜的表面进行粗糙处理。
例如，在本发明的实施例提供的触摸屏的制作方法中，形成所述电致发光像素单元包括：在所述衬底基板上依次形成阳极、发光层和阴极的图形。
例如，在本发明的实施例提供的触摸屏的制作方法中，各所述电致发光像素单元的阴极图形相互独立，且通过位于各所述电致发光像素单元的间隙处的导线相互连接。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例，而非对本发明的限制。
图1为一种基于OLED的触控产品的结构示意图；
图2a为本发明一实施例提供的一种触摸屏的结构示意图；
图2b为本发明另一实施例提供的一种触摸屏的结构示意图；
图3为本发明一实施例提供的触摸屏中触控电极和电极引出线同层设置的结构示意图；
图4为本发明另一实施例提供的触摸屏中触控电极和电极引出线同层设置的结构示意图；
图5为本发明一实施例提供的触摸屏中阴极和触控电极的结构示意图；
图6为本发明一实施例提供的触摸屏中触控电极和电极引出线异层设置的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例的附图，对本发明实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的实施例提供一种触摸屏，例如，图2a为本发明一实施例提供的一种触摸屏的结构示意图，图2b为本发明另一实施例提供的一种触摸屏的结构示意图。结合图2a和图2b，该触控屏包括：衬底基板100，设置在 衬底基板100上呈阵列排布的多个电致发光像素单元200，设置于电致发光像素单元200上呈阵列排布的触控电极300，其中，触控电极300与电致发光像素单元200相互绝缘。
本发明实施例提供的触摸屏，将呈阵列排布的触控电极300设置于OLED显示面板中，设置于电致发光像素单元200上且与电致发光像素单元200相互绝缘，这样得到的触摸屏可以降低触控显示装置的厚度，利于产品的轻薄化设计。
进一步地，由于触摸屏在使用时，使用者需要频繁的接触、按压屏幕，所以一般需要设置保护盖板对触摸屏的屏幕进行保护，因此，在本发明实施例提供的触摸屏中，如图2a和图2b所示，在触控电极300之上一般还会设置透明盖板400。该透明盖板400可以对屏幕进行保护，还可以阻隔水、氧对电致发光像素单元200造成侵害，从而减少水氧对显示功能带来的影响。
例如，示例性地，在本发明实施例提供的触摸屏中，为了保证触控电极300与电致发光像素单元200之间相互绝缘，如图2a所示，在触摸屏中还设置了位于电致发光像素单元200与触控电极300之间的绝缘层500。
进一步地，由于构成各电致发光像素单元200的发光材料对于水、氧条件的要求较为严苛，因此，在本发明实施例提供的触摸屏中，如图2b所示，还可以在电致发光像素单元200与触控电极300之间设置封装于电致发光像素单元200外侧的聚合物薄膜600，以便在将电致发光像素单元200与触控电极300相互绝缘的同时，消除或减少外界环境对电致发光像素单元200的侵害。
进一步地，本发明实施例提供的触摸屏还可以制作成柔性触摸屏，相应地，封装于电致发光像素单元200外侧的聚合物薄膜600以及透明盖板400采用柔性材料制作。
例如，在本发明实施例提供的触摸屏中，触控电极300可以采用喷墨打印的方式形成，采用喷墨打印的方式可以简化制作触控电极300的工艺，降低生产成本。
例如，可以采用纳米银、石墨烯、掺杂金属溶液等材料作为打印溶液制作触控电极300。即触控电极300的材料为纳米银、石墨烯、或掺杂金属材料。
在本发明实施例提供的触摸屏中，触控电极300材料的选用会影响触摸 屏的透过率。例如，当选用透过率较高的溶液制备触控电极300时，触控电极300的图案可以选择为制作在正对电致发光像素单元200的开口区域，即各触控电极300的图案在衬底基板100上的正投影覆盖至少一个电致发光像素单元200。为了减小触控电极300的寄生电容，提升触控性能，如图3所示，还可以将每个触控电极300进行局部镂空处理，即各触控电极300的图案分别具有镂空区域310。
例如，当选用透过率较低的溶液制备触控电极300时，各触控电极300的图案需要制作到正对电致发光像素单元200之间的间隙，即各触控电极300的图案在衬底基板100上的正投影位于电致发光像素单元200的间隙处，例如仅位于电致发光像素单元200的间隙内，以此确保触控电极300对显示开口率影响的最小化。
例如，图4为本发明另一实施例提供的触摸屏中触控电极和电极引出线同层设置的结构示意图。在本发明的实施例提供的触摸屏中各触控电极300的图案可以制作成在衬底基板100上的正投影为以电致发光像素单元200在衬底基板上的正投影作为网孔的网格状结构。
在本发明实施例提供的触摸屏中，如图2a和图2b所示，各电致发光像素单元200至少包含阳极210、发光层220以及阴极230。可以通过降低阴极230与触控电极300之间的交叠面积以减小触控电极300的寄生电容，例如，如图5所示，可以将原本覆盖衬底基板100整面的阴极230按照电致发光像素单元进行分割，即各电致发光像素单元200的阴极230相互独立，并且相互独立的各电致发光像素单元200的阴极230之间通过位于电致发光像素单元200间隙处的导线相互连接，确保所有阴极230之间都可以传输电信号。可以在保证触摸屏显示的开口率的同时，使触控电极300与阴极230之间的交叠面积减小以降低触控电极300的寄生电容。
例如，在本发明实施例提供的触摸屏中，各触控电极300可以设置为单层，也可以设置为多层，可以采用互电容的方式进行触控检测，也可以采用自电容的方式进行触控检测。对于各触控电极300外轮廓的形状并无明确的限定，例如，各触控电极300外轮廓的形状可以是矩形、三角形、菱形等。
例如，在本发明实施例提供的触摸屏中，如图3和图4所示，该触摸屏还可以包括与触控电极300连接的电极引出线700，用于对触控电极300加载相应的电信号，为了不影响触摸屏显示的开口率以及透光率，一般会将电 极引出线700设置于正对电致发光像素单元200之间的间隙处，即电极引出线700在衬底基板100上的正投影位于电致发光像素单元200之间的间隙处。
例如，在本发明实施例提供的触摸屏中，如图3和图4所示，可以将电极引出线700与触控电极300同层设置，这样可以减少触摸屏中膜层的总数量，但同时也会存在一定的触控盲区。当对电极引出线700所在的区域进行触控时，在触控电极300的位置及其连接的电极引出线700的位置均会产生感应信号，可以通过预先对电极引出线700所在的区域进行统计分块，并测试收集检测数据，设定对应的统计分块阈值，即可对电极引出线700所在的区域的触控检测进行补偿，从而减小触控盲区对于触控检测的影响。
例如，在本发明实施例提供的触摸屏中，为了避免出现触控盲区，如图6所示，也可以将电极引出线700与触控电极300异层设置，即将所有电极引出线700导入其他膜层进行布线，之后通过过孔连接的方式将电极引出线700与对应的触控电极300电连接。
本发明的实施例提供了一种触摸屏的制作方法，包括：提供衬底基板；在衬底基板上形成呈阵列排布的电致发光像素单元；在电致发光像素单元上形成呈阵列排布的触控电极；其中，电致发光像素单元与触控电极相互绝缘。
在本发明实施例提供的制作方法中，在电致发光像素单元上形成与电致发光像素单元相互绝缘的触控电极时，可以采用喷墨打印的方式形成触控电极，采用喷墨打印的方式可以有效地简化制作触控电极的工艺，降低生产成本。例如，可以采用纳米银、石墨烯、掺杂金属溶液等材料作为打印溶液制作触控电极。
进一步地，为了确保触控电极与电致发光像素单元相互绝缘，两者不会相互影响，在本实施例提供的制作方法中，在采用喷墨打印的方式形成触控电极之前，通常还会在电致发光像素单元之上形成绝缘层，或者，形成封装于电致发光像素单元外侧的聚合物薄膜。并且，为了利于喷墨打印制作触控电极，在形成绝缘层或聚合物薄膜之后，还会对绝缘层或聚合物薄膜的表面进行粗糙处理。经过粗糙处理后绝缘层或聚合物薄膜的表面比较易于溶液材料的打印和制作，例如，可以采用光学方式也可以采用电学方式或热力学方式进行粗糙处理，在此不做限定。
进一步地，在本发明实施例提供的制作方法中，在衬底基板上形成电致发光像素单元的操作，可以包括以下步骤：在衬底基板上依次形成阳极、发 光层和阴极的图形，例如，各电致发光像素单元的阴极图形可以相互独立，且通过位于各电致发光像素单元的间隙处的导线相互连接。
本发明的实施例提供一种显示装置，包括上述中的触摸屏。该显示装置可以为：手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。该显示装置的示例可以参见上述中触摸屏的示例，重复之处不再赘述。
本发明实施例提供的一种触摸屏及其制作方法、显示装置，将呈阵列排布的触控电极设置于OLED显示面板中，设置于电致发光像素单元之上且与电致发光像素单元相互绝缘，这样可以降低触控显示装置的厚度，利于产品的轻薄化设计。
显然，本领域的技术人员可以对本发明进行各种改动或变型而不脱离本发明的精神和范围。如果这些修改或变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动或变型在内。
以上所述仅是本发明的示范性实施方式，而非用于限制本发明的保护范围，本发明的保护范围由所附的权利要求确定。
本申请要求于2015年11月19日递交的中国专利申请第201510802599.5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 (20)

  1. 一种触摸屏，包括：
    衬底基板，
    设置在所述衬底基板上呈阵列排布的电致发光像素单元，
    设置于所述电致发光像素单元上呈阵列排布的触控电极，其中，所述电致发光像素单元与所述触控电极相互绝缘。
  2. 如权利要求1所述的触摸屏，其中，各所述触控电极的图案在所述衬底基板上的正投影覆盖至少一个所述电致发光像素单元。
  3. 如权利要求2所述的触摸屏，其中，各所述触控电极的图案具有镂空区域。
  4. 如权利要求1-3中任一项所述的触摸屏，其中，各所述触控电极的图案在所述衬底基板上的正投影位于所述电致发光像素单元的间隙处。
  5. 如权利要求1-3中任一项所述的触摸屏，其中，各所述触控电极的图案在所述衬底基板上的正投影为以所述电致发光像素单元在所述衬底基板上的投影作为网孔的网格状结构。
  6. 如权利要求1-5中任一项所述的触摸屏，其中，各所述电致发光像素单元至少包含阳极、发光层和阴极。
  7. 如权利要求6所述的触摸屏，其中，各所述电致发光像素单元的阴极相互独立，且通过位于各所述电致发光像素单元间隙处的导线相互连接。
  8. 如权利要求1所述的触摸屏，还包括：与所述触控电极连接的电极引出线，所述电极引出线在所述衬底基板上的正投影位于所述电致发光像素单元的间隙处。
  9. 如权利要求8所述的触摸屏，其中，所述电极引出线与所述触控电极同层设置。
  10. 如权利要求1-9中任一项所述的触摸屏，其中，所述触控电极的材料为纳米银、石墨烯、或掺杂金属材料。
  11. 如权利要求1-10中任一项所述的触摸屏，还包括：设置于所述电致发光像素单元与所述触控电极之间的绝缘层。
  12. 如权利要求1-10中任一项所述的触摸屏，还包括：设置于所述电致发光像素单元与所述触控电极之间且封装于所述电致发光像素单元外侧的 聚合物薄膜。
  13. 如权利要求12所述的触摸屏，其中，所述触摸屏为柔性触摸屏。
  14. 一种显示装置，包括如权利要求1-13中任一项所述的触摸屏。
  15. 一种触摸屏的制作方法，包括：
    提供衬底基板；
    在所述衬底基板上形成呈阵列排布的电致发光像素单元；
    在所述电致发光像素单元上形成呈阵列排布的触控电极；其中，所述电致发光像素单元与所述触控电极相互绝缘。
  16. 如权利要求15所述的制作方法，其中，采用喷墨打印的方法形成所述触控电极。
  17. 如权利要求16所述的制作方法，在采用喷墨打印的方法形成所述触控电极之前，还包括：
    在所述电致发光像素单元上形成绝缘层，并对所述绝缘层的表面进行粗糙处理。
  18. 如权利要求16所述的制作方法，在采用喷墨打印的方法形成所述触控电极之前，还包括：
    形成封装于所述电致发光像素单元外侧的聚合物薄膜，并对所述聚合物薄膜的表面进行粗糙处理。
  19. 如权利要求15-18中任一项所述的制作方法，其中，形成所述电致发光像素单元包括：
    在所述衬底基板上依次形成阳极、发光层和阴极的图形。
  20. 如权利要求19所述的制作方法，其中，各所述电致发光像素单元的阴极图形相互独立，且通过位于各所述电致发光像素单元的间隙处的导线相互连接。
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