WO2017067377A1 - 触控基板及其制作方法、触控显示装置 - Google Patents

触控基板及其制作方法、触控显示装置 Download PDF

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Publication number
WO2017067377A1
WO2017067377A1 PCT/CN2016/100696 CN2016100696W WO2017067377A1 WO 2017067377 A1 WO2017067377 A1 WO 2017067377A1 CN 2016100696 W CN2016100696 W CN 2016100696W WO 2017067377 A1 WO2017067377 A1 WO 2017067377A1
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Prior art keywords
electrode
touch
substrate
electrochromic
color change
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PCT/CN2016/100696
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English (en)
French (fr)
Inventor
王腾利
江建明
潘朝辉
程继忠
魏育东
Original Assignee
京东方科技集团股份有限公司
合肥鑫晟光电科技有限公司
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Priority to US15/522,549 priority Critical patent/US10282020B2/en
Publication of WO2017067377A1 publication Critical patent/WO2017067377A1/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 
    • G02F1/15—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 an electrochromic effect
    • G02F1/153—Constructional details
    • 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
    • G02F1/1343—Electrodes
    • G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
    • 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 
    • G02F1/15—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 an electrochromic effect
    • G02F1/153—Constructional details
    • G02F1/1533—Constructional details structural features not otherwise provided for
    • 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 
    • G02F1/15—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 an electrochromic effect
    • G02F1/153—Constructional details
    • G02F1/155—Electrodes
    • 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 
    • G02F1/15—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 an electrochromic effect
    • G02F1/153—Constructional details
    • G02F1/157—Structural association of cells with optical devices, e.g. reflectors or illuminating devices
    • 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
    • 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
    • G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate

Definitions

  • Embodiments of the present invention relate to a touch substrate, a method of fabricating the same, and a touch display device.
  • Touch technology is one of the mediums for human-computer interaction. As an emerging technology, touch technology can replace human-to-machine signal input instead of mouse and keyboard. It is the most direct, convenient and effective input method. There are many types of touch technologies. By selecting the right technology and design, the operator can meet the signal input requirements of the machine. The operator only needs to touch the display device with a finger to realize complex signal input.
  • the OGS One glass solution
  • the conductive film and sensor are directly formed on the protective glass, and one glass is simultaneously protected.
  • the dual role of touch sensing saves the cost of a layer of glass, reduces the cost of a single bond, reduces the weight and thickness, increases the light transmittance, and can be used as a choice for high-end brand terminals.
  • the embodiment of the invention provides a touch substrate, a manufacturing method thereof, and a touch display device, so that the color of the frame region is variable.
  • An embodiment of the invention provides a touch substrate, including:
  • a substrate including a touch area and a border area
  • a touch electrode pattern disposed on the touch area of the substrate
  • An electrochromic structure disposed in a bezel area of the substrate.
  • the embodiment of the invention further provides a method for manufacturing a touch substrate, comprising:
  • An electrochromic structure is formed in the bezel region of the substrate.
  • An embodiment of the present invention further provides a touch display device including a color change control unit and any touch substrate according to an embodiment of the present invention, the color change control unit configured to control the electrochromic The structure is discolored.
  • FIG. 1 is a schematic structural diagram of a touch substrate according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of a touch substrate according to an embodiment of the invention.
  • the color in the frame area is not variable, which is not conducive to improving the user experience.
  • an embodiment of the invention provides a touch substrate, comprising: a substrate, a touch electrode pattern disposed on the touch area of the substrate; and an electrochromic structure disposed in the frame region of the substrate.
  • the substrate includes a touch area and a frame area; the frame area surrounds the touch area.
  • the touch substrate provided by the embodiment of the invention can solve the problem that the color of the frame area of the display device in the prior art is not variable.
  • an embodiment of the present invention provides a method for fabricating a touch substrate, which can be used to manufacture The touch substrate of the first aspect, the method comprising:
  • An electrochromic structure is formed on the bezel area on the substrate.
  • the specific structure of the touch substrate may be expressed in a plurality of different forms, and the corresponding manufacturing methods may also be different.
  • the following description will be made with reference to the accompanying drawings.
  • FIG. 1 and FIG. 2 are schematic diagrams showing the structure of a touch substrate according to an embodiment of the present invention, including a substrate 100, a first touch electrode pattern 210 and a second touch electrode formed on the touch area A of the substrate 100.
  • the first electrode 230 and the first touch electrode pattern 210 are made of the same material and formed in the same layer, and are connected to each other.
  • a light-shielding pattern 300 is formed in the frame region B.
  • the light-shielding pattern 300 includes a plurality of horizontally and vertically intersecting light-shielding lines, and adjacent horizontal and vertical intersecting lines surround the hollow portion 301.
  • the first electrode 230 is formed in the light-shielding pattern 300.
  • an electrochromic material 400 formed over the first electrode 230 and the substrate 100.
  • An insulating layer 500 is formed on the electrochromic material 400 of the frame region B and the first touch electrode pattern 210 and the second touch electrode pattern 220 of the touch region A.
  • the touch substrate further includes a second electrode 610 formed therein; and a second portion is formed above the insulating layer 500 of the frame region B.
  • the color change control trace 620 to which the electrode 610 is connected (the connection is not shown).
  • the second electrode 610 and the color change control trace 620 are made of the same material, such as copper or the like, but are not limited thereto.
  • a bridge electrode 630 is further included in the touch area A.
  • the bridge electrode 630 spans two second touch electrodes in the second touch electrode pattern 220 to be located on two sides of the second touch electrode.
  • a touch electrode is connected together.
  • the bridge electrode 630, the color change control trace 620, and the second electrode 610 may be formed in the same layer.
  • a protective layer 700 is also formed over the color change control trace 620 and the bridge electrode 630, and the protective layer may be made of an insulating material.
  • a color changing structure is formed in the frame region, and the color of the frame region can be changed.
  • the color control of the frame area can be realized by applying an electric control signal through the color change control line.
  • the first electrode 230 and the second electrode 610 and the electro-deformation are provided in the touch substrate.
  • the color material 400 constitutes the electrochromic structure 200, and by applying a control voltage on the color change control trace 620, the pressure difference between the first electrode 230 and the second electrode 610 can be changed, thereby changing the color of the electrochromic material, so that the corresponding The color of the frame area B of the display device is variable, and the problem that the color of the frame area B of the display device in the prior art is not variable can be solved, and the user experience is improved.
  • the first electrode 230 is connected to the first touch electrode pattern 210, so that the voltage of the first electrode 230 is consistent with the first touch electrode pattern 210, so that it is not necessary to separately
  • the first electrode 230 produces a color change control trace.
  • the first electrode 230 and the first touch electrode pattern 210 can be fabricated by the same patterning process, so that the touch substrate can be reduced by the first electrode 230 and the first touch electrode pattern 210. Difficult to make.
  • the first electrode 230 can also be connected to the second touch electrode pattern 220 and made of the same material in the same layer.
  • first electrode 230 may not be connected to the first touch electrode pattern 210 or the second touch electrode pattern 220, and the first electrode 230 may be separately formed.
  • the first touch electrode pattern 210 or the second touch electrode pattern 220 is made of the same material and is made of the same material.
  • the color change control trace connected to the first electrode 230 can also be separately fabricated, and the color change connected to the first electrode 230 can be separately formed.
  • the control traces can also be formed in the same layer as the color change control traces connected to the second electrode 610, which is not limited by the embodiment of the present invention.
  • the second electrode 610 and the color change control trace 620 are made of the same material, and the second electrode 610 is located at a position where the electrochromic material 400 protrudes from the insulating layer 500, so that it can be fabricated. It is made by the same composition process, which reduces the difficulty of production. Also, embodiments of the invention are not limited thereto. It can also be set in other ways.
  • the light-shielding pattern 300 is disposed in the frame region B, and the electrochromic structure is disposed in the hollow portion of the light-shielding pattern, which has the advantage of avoiding the above-mentioned electro-induced
  • the color produced by the color changing structure crosses the color of the electrochromic structure of the touch area A, and avoids crosstalk between the color produced by one electrochromic structure and the color produced by another electrochromic structure, affecting the display .
  • the above-mentioned hollowed out portion may be a relatively large area, which may be substantially the same as the frame area 300. The areas are uniform such that the entire bezel area 300 emits a color of light.
  • the electrochromic material 400 located in different hollow portions may be Differently, this enables the bezel area 300 to display different colors at different positions.
  • the hollowed out portion is only a relatively large area as described above, that is, when the touch substrate includes only one electrochromic structure, different electro-optic regions may be disposed at different regions of the hollow portion.
  • the color changing material can also cause the border area to display different colors at different positions.
  • the electrochromic material 400 described above may be an organic electrochromic material, for example, may include polythiophenes and derivatives thereof, viologen, tetrathiafulvalene, metal phthalocyanines, and polyanilines. One or several.
  • the electrochromic material described above may also be an inorganic electrochromic material, for example, one or more of tungsten trioxide, molybdenum trioxide, and vanadium pentoxide.
  • the material of the electrochromic material 400 is not limited to the above-listed materials.
  • FIG. 2 the structure of the touch substrate at the boundary between the touch area A and the frame area B in FIG. 1 is shown, and the structure of the touch substrate is also at other positions of the frame area. 2 is similar to FIG. 2, in the side of the light-shielding pattern close to the touch area A, not the first touch electrode pattern 210 and the second touch electrode pattern 220 shown in FIG. 2, but The light-shielding pattern 300 is adjacent to the same electrochromic structure on one side of the bezel area. At this time, the first electrodes of the respective electrochromic structures not adjacent to the touch area may be connected to the touch electrode patterns through the first electrodes of the respective electrochromic structures adjacent to the touch areas.
  • forming an electrochromic structure on a frame region on the substrate may include: forming a first electrode, a second electrode, and a portion in a frame region of the substrate An electrochromic material between an electrode and a second electrode; a color change control trace connecting the first electrode and/or the second electrode.
  • the process of forming the first electrode, the second electrode, and the electrochromic material between the first electrode and the second electrode in the frame region of the substrate may include:
  • a first electrode is formed, an electrochromic material is formed over the first electrode, and a second electrode is formed over the electrochromic material.
  • forming the electrochromic material in each of the hollow portions of the light-shielding pattern may include:
  • the electrochromic material is formed by a screen printing process.
  • the process of forming the first electrode may include forming the first electrode in the same patterning process of forming the touch electrode pattern.
  • the difficulty in manufacturing the touch substrate can be reduced.
  • a first electrode and a touch electrode pattern may be deposited on the substrate. The material layer is then etched by a patterning process to obtain a corresponding first electrode and touch electrode pattern.
  • the above method may further include: a process of forming an insulating layer on the electrochromic material; and the prepared insulating layer enables the electrochromic material to be A part of the insulation layer is extended. That is, a portion of the electrochromic material protrudes from the insulating layer.
  • the process of fabricating the second electrode and the color change control trace may include: forming a second electrode and a color change control trace by the same patterning process; and the second electrode is located at a portion of the electrochromic material extending from the insulating layer Above, the color change control trace is located on the insulating layer. In this way, the difficulty of production can also be reduced.
  • a layer of material for forming a second electrode and a color change control trace may be deposited over the insulating layer and the electrochromic material not covered by the insulating layer, after which the material layer is patterned to obtain a corresponding second electrode. And color control lines.
  • the embodiment of the present invention further provides a touch display device, including the touch substrate of the first aspect, further comprising a color change control unit, a color change control trace, and a color change control trace in the touch substrate Connected for controlling the discoloration of the electrochromic structure by controlling the voltage applied to the color change control trace.
  • the color change control unit includes, for example, a color change controller.
  • the color changing control unit may be located inside the touch driving circuit or may be a module independent of the touch driving circuit.
  • the touch driving device may further include a detecting unit configured to generate a touch signal when the touch electrode pattern is touched.
  • the detection unit comprises, for example, a detector.
  • the color change control unit described above is configured to control the voltage applied to the color change control trace to control the discoloration of the electrochromic structure upon receiving the touch signal generated by the detecting unit.
  • the frame area can be controlled to display the color change, thereby improving the user experience.
  • the detecting unit may be a touch driving circuit, and the touch driving circuit may be connected to the touch electrode pattern to periodically send the touch driving signal to the touch electrodes in the touch electrode pattern.
  • the touch driving circuit can send a touch signal to the color changing control, and the color changing control unit is triggered to change the voltage applied to the color changing control line to change the color of the electrochromic structure.
  • the touch display device may be any product or component having a touch function and a display function, such as an electronic paper, a mobile phone, a watch, a tablet, a navigator, and the like.
  • the touch electrode pattern shown in FIG. 2 is taken as an example, and the touch electrode pattern is not limited thereto.
  • the first touch electrode pattern and the second touch electrode pattern respectively serving as the touch driving electrode and the touch sensing electrode may be formed in the same layer without using the bridge structure, or the first touch electrode pattern and the second touch The electrode patterns are located on different layers, and an insulating layer or the like is formed therebetween.
  • the first electrode and the first touch electrode pattern may be formed in the same layer, and the second electrode, The color change control trace and the second touch electrode pattern can be formed in the same layer.
  • the patterning or patterning process may include only a photolithography process, or a photolithography process and an etching step, or may include other processes for forming a predetermined pattern, such as printing, inkjet, and the like.
  • the photolithography process refers to a process including film formation, exposure, development, and the like, and forms a pattern by using a photoresist, a mask, an exposure machine, or the like.
  • the corresponding patterning process can be selected in accordance with the structure formed in the embodiments of the present invention.
  • the "same layer” may refer to a layer structure formed by forming a film layer for forming a specific pattern by the same film forming process, and then forming the pattern by one patterning process using the same mask.
  • a patterning process may include multiple exposure, development, or etching processes, and the particular pattern in the resulting layer structure may be continuous or discontinuous, and these particular patterns may also be at different heights. Or have different thicknesses.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

一种触控基板及其制作方法、触控显示装置。该触控基板包括：基底(100)，设置在基底(100)的触控区域(A)的触控电极图形(210、220)；以及设置在所述基底(100)的边框区域(B)的电致变色结构(200)。该触控基板可以实现边框区域的颜色的变换，从而解决显示装置的边框区域的颜色单一的问题。

Description

触控基板及其制作方法、触控显示装置 技术领域
本发明的实施例涉及一种触控基板及其制作方法、触控显示装置。
背景技术
触摸技术是人机交互的媒介之一，作为一种新兴的技术，触控技术可以代替鼠标和键盘实现人对机器信号的输入，是目前最直接、最便捷、最有效的输入方式。实现触控技术的种类有很多，通过选择合适的技术和设计，来满足操作者对机器信号输入需求，操作人员只需要用手指轻触显示设备就可以实现复杂的信号输入。
在新技术的快速发展下，人们对触摸屏的需求越来越大，对触控技术的要求也越来越高。轻薄化是触控显示的一个趋势，OGS(One glass solution，一片玻璃解决方案)制程使触控显示在一层玻璃上实现，在保护玻璃上直接形成导电膜和传感器，一块玻璃同时起到保护和触摸传感的双重作用。OGS触摸屏结构节省了一层玻璃的成本，减少了一次贴合成本，减轻了重量及厚度，增加了透光率，可作为高端品牌终端的选择。
发明内容
本发明的实施例提供一种触控基板及其制作方法、触控显示装置，以使得边框区域的颜色可变。
本发明的实施例提供一种触控基板，包括：
基底，包括触控区域和边框区域；
触控电极图形，设置在所述基底的触控区域；
电致变色结构，设置在所述基底的边框区域。
本发明的实施例还提供一种触控基板的制作方法，包括：
在基底的触控区域形成触控电极图形；
在所述基底的边框区域形成电致变色结构。
本发明的实施例还提供一种触控显示装置，包括变色控制单元和本发明实施例所述的任一触控基板，所述变色控制单元被配置来控制所述电致变色 结构变色。
附图说明
图1为本发明一实施例提供的一种触控基板的结构示意图；
图2为本发明一实施例提供的一种触控基板的剖视示意图。
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。
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。本公开中使用的“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。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”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。
通常的OGS显示装置中，在边框区域的颜色不可变，不利于提升用户体验。
第一方面，本发明实施例提供了一种触控基板，包括：基底，设置在基底的触控区域的触控电极图形；设置在所述基底的边框区域的电致变色结构。基底包括触控区域和边框区域；边框区域围绕触控区域。
本发明实施例提供的触控基板可解决通常技术中的显示装置的边框区域的颜色不可变的问题。
第二方面，本发明实施例提供了一种触控基板的制作方法，可以用以制 作第一方面所述的触控基板，该方法包括：
在基底的触控区域形成触控电极图形；
在基底上的边框区域形成电致变色结构。
上述的触控基板的具体结构可以表现为多种不同的形式，相应的制作方法也可能不尽相同，下面结合附图进行说明。
参见图1和图2，为本发明一个实施例提供的触控基板的结构示意图，包括基底100、形成在基底100上的触控区域A的第一触控电极图形210和第二触控电极图形220、形成在基底100上的边框区域B的第一电极230。例如，第一电极230和第一触控电极图形210材质相同并同层形成，并且相互连接。
在边框区域B内，形成有遮光图形300，该遮光图形300包多条横纵交叉的遮光线条，相邻的横纵交叉线条围设出镂空部分301，第一电极230形成在遮光图形300所围设出的镂空部分中。在该镂空部分内，还包括形成在第一电极230以及基底100上方的电致变色材料400。在边框区域B的电致变色材料400以及触控区域A的第一触控电极图形210和第二触控电极图形220的上方形成有一层绝缘层500。
在边框区域B，电致变色材料400的一部分伸出绝缘层500，该触控基板还包括形成在该处的第二电极610；在边框区域B的绝缘层500的上方还形成有与第二电极610相连的变色控制走线620(图中未示出连接)。例如，第二电极610与变色控制走线620采用相同的材料制作，比如铜等，但不限于此。
另外，在触控区域A内，还包括搭桥电极630，该搭桥电极630跨过第二触控电极图形220中的一个第二触控电极将位于该第二触控电极两侧的两个第一触控电极连接在一起。例如，搭桥电极630、变色控制走线620和第二电极610可同层形成。在变色控制走线620和搭桥电极630的上方还形成有保护层700，该保护层可以由绝缘材料制作。
本发明实施例提供的触控基板中，在边框区域形成有变色结构，可实现边框区域的颜色的变换。可以通过变色控制走线施加电控制信号，实现边框区域的颜色的变换。
在该实施例提供触控基板中，第一电极230和第二电极610以及电致变 色材料400构成电致变色结构200，通过在变色控制走线620上施加控制电压，能够改变第一电极230和第二电极610之间的压差，从而改变电致变色材料的颜色，使得相应的显示装置的边框区域B的颜色可变，能够解决通常技术中的显示装置的边框区域B的颜色不可变的问题，提升用户的使用体验。
例如，在本发明实施例中，在第一电极230和第一触控电极图形210相连，这样可以使得第一电极230的电压与第一触控电极图形210保持一致，这样就无需单独再为第一电极230制作变色控制走线。且由于第一电极230和第一触控电极图形210位于同一层且由相同的材料制作，这样第一电极230和第一触控电极图形210可以通过同一构图工艺制作，能够降低触控基板的制作难度。当然，上述的第一电极230也可以与第二触控电极图形220相连且采用相同的材料同层制作。另外，上述的第一电极230也可以不与上述的第一触控电极图形210或者第二触控电极图形220相连，且第一电极230可以单独制作，此时第一电极230也可以不与上述的第一触控电极图形210或者第二触控电极图形220同层且采用相同的材料制作，与第一电极230相连的变色控制走线也可以单独制作，与第一电极230相连的变色控制走线也可同与第二电极610相连的变色控制走线同层制作，本发明的实施例对此不作限定。
例如，在本发明实施例中，第二电极610和变色控制走线620采用相同的材料制作，且第二电极610位于电致变色材料400伸出绝缘层500的位置处，这样就能够在制作时通过同一构图工艺制作，从而降低制作难度。同样的，本发明的实施例并不限于此。也可以采用其他方式设置。
例如，在本发明实施例中，在边框区域B设置遮光图形300，并将上述的电致变色结构设置在遮光图形所围设处的镂空部分中，这样做的好处是能够避免上述的电致变色结构所产生的颜色与触控区域A的电致变色结构的颜色发生串扰，并避免一个电致变色结构所产生的颜色与另一个电致变色结构所产生的颜色之间的串扰，影响显示。不难理解的是，虽然在图1中示出的是包含多个镂空部分的情形，但是在实际应用中，上述的镂空部分可以为一个比较大的区域，该区域可以基本与边框区域300的面积一致，这样使得整个边框区域300发一种颜色的光。
例如，本发明实施例中，位于不同的镂空部分中的电致变色材料400可 以不同，这样能够使得边框区域300在不同的位置处显示不同颜色。另外，当如上述所述的，上述的镂空部分仅为一个比较大的区域时，即当触控基板仅包含一个电致变色结构时，可以在该镂空部分的不同区域处设置不同的电致变色材料，这样同样可以使得边框区域在不同的位置处显示不同颜色。
例如，上述的电致变色材料400可以为有机电致变色材料，例如，可以包括聚噻吩类及其衍生物、紫罗精类、四硫富瓦烯、金属酞菁类化合物以及聚苯胺类中的一种或者几种。或者上述的电致变色材料也可以为无机电致变色材料，例如，可以包括三氧化钨、三氧化钼以及五氧化二钒中的一种或多种。但电致变色材料400的材质并不限于上述列举的物质。
需要指出的是，在图2中示出的是在图1中触控区域A和边框区域B的交界处的触控基板的结构示意图，在边框区域的其他位置处触控基板的结构也与图2类似，与图2不同的是，在遮光图形靠近触控区域A的一侧中不是图2中所示的第一触控电极图形210和第二触控电极图形220，而是与该遮光图形300靠近边框区域的一侧相同的电致变色结构。此时，与触控区域不相邻的各个电致变色结构的第一电极可以通过与触控区域相邻的各个电致变色结构的第一电极与触控电极图形相连。
对于图1和图2所示的触控基板，上述的制作方法中：在基底上的边框区域形成电致变色结构，可以包括：在基底的边框区域形成第一电极、第二电极和位于第一电极与第二电极之间的电致变色材料；变色控制走线连接第一电极和/或第二电极。
进一步的，在基底的边框区域形成第一电极、第二电极和位于第一电极与第二电极之间的电致变色材料的过程可以包括：
在基底的边框区域形成遮光图形；
在遮光图形的每一个镂空部分中，形成第一电极，在第一电极上方形成电致变色材料，在电致变色材料上方形成第二电极。
例如，在遮光图形的每一个镂空部分中形成电致变色材料可以包括：
通过丝网印刷工艺形成电致变色材料。
例如，上述的方法中，形成第一电极的过程可以包括：在形成触控电极图形的同一构图工艺中形成第一电极。通过这种方式，能够降低触控基板的制作难度。例如，可以在基底上还沉积用于形成第一电极以及触控电极图形 的材料层，之后通过图案化工艺对沉积的材料层进行刻蚀得到相应的第一电极和触控电极图形。
另外，当制作上述图1和图2所示的触控基板时，上述的方法还可以包括：在电致变色材料之上形成绝缘层的过程；制作好的绝缘层能够使得电致变色材料的一部分伸出绝缘层。即，电致变色材料的一部分凸出于绝缘层。
此时，上述的方法中，制作第二电极和变色控制走线的过程可以包括：通过同一构图工艺形成第二电极和变色控制走线；第二电极位于电致变色材料伸出绝缘层的部分上，变色控制走线位于绝缘层上。通过这种方式也能够降低制作难度。例如，可以在绝缘层以及未被绝缘层覆盖的电致变色材料上方沉积一层用于形成第二电极和变色控制走线的材料层，之后对该材料层进行图案化得到对应的第二电极和变色控制走线。
第三个方面，本发明实施例还提供了一种触控显示装置，包括第一方面所述的触控基板，还包括变色控制单元，变色控制走线与触控基板中的变色控制走线相连，用于通过控制施加到变色控制走线上的电压控制电致变色结构变色。变色控制单元例如包括变色控制器。
例如，上述的变色控制单元可以位于触控驱动电路内部，也可以为独立于触控驱动电路的一个模块。
例如，上述的触控驱动装置还可以包括检测单元，检测单元被配置来在触控电极图形被触摸状态下生成触控信号。检测单元例如包括检测器。
此时，上述的变色控制单元被配置来在接收到检测单元生成的触控信号时，控制施加到变色控制走线上的电压控制电致变色结构变色。
这样在每一次发生触控时，都能够控制边框区域进行变色显示，提升用户体验。
例如，上述的检测单元可以为触控驱动电路，该触控驱动电路可以与触控电极图形相连，周期性的向触控电极图形中的触控电极发送触控驱动信号。一般的，当一个坐标位置处有手指触控时，会导致该坐标位置处的触控电极上的电压变化，这样可以通过触控电极图形中的触控电极检测到该电压变化，从而确定该坐标位置处有触控。此时触控驱动电路将可以向变色控制发送触控信号，触发变色控制单元改变施加到变色控制走线上的电压，使电致变色结构的颜色发生改变。
例如，触控显示装置可以为：电子纸、手机、手表、平板电脑、导航仪等任何具有触控功能和显示功能的产品或部件。
需要说明的是，本发明的实施例中，以图2所示的触控电极图形为例进行说明，触控电极图形并不限于此。例如，还可以不采用搭桥结构同层形成分别作为触控驱动电极和触控感应电极的第一触控电极图形和第二触控电极图形，或者，第一触控电极图形和第二触控电极图形位于不同的层，两者之间形成有绝缘层等。在第一触控电极图形和第二触控电极图形位于不同的层，两者之间形成有绝缘层的情况下，第一电极和第一触控电极图形可同层形成，第二电极、变色控制走线、第二触控电极图形可同层形成。
应该理解，在本发明的实施例中，构图或构图工艺可只包括光刻工艺，或包括光刻工艺以及刻蚀步骤，或者可以包括打印、喷墨等其他用于形成预定图形的工艺。光刻工艺是指包括成膜、曝光、显影等工艺过程，利用光刻胶、掩模板、曝光机等形成图形。可根据本发明的实施例中所形成的结构选择相应的构图工艺。
在本公开的实施例中，“同层”可指采用同一成膜工艺形成用于形成特定图形的膜层，然后利用同一掩模板通过一次构图工艺形成的层结构。根据特定图形的不同，一次构图工艺可能包括多次曝光、显影或刻蚀工艺，而形成的层结构中的特定图形可以是连续的也可以是不连续的，这些特定图形还可能处于不同的高度或者具有不同的厚度。
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。
本专利申请要求于2015年10月23日递交的中国专利申请第201510696464.5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. 一种触控基板，包括：
    基底，包括触控区域和边框区域；
    触控电极图形，设置在所述基底的触控区域；以及
    电致变色结构，设置在所述基底的边框区域。
  2. 如权利要求1所述的触控基板，其中，所述电致变色结构包括第一电极、第二电极以及位于第一电极和第二电极之间的电致变色材料。
  3. 如权利要求2所述的触控基板，还包括设置在所述基底的边框区域的变色控制走线，所述变色控制走线被配置来控制所述电致变色结构变色。
  4. 如权利要求3所述的触控基板，其中，所述变色控制走线连接所述第一电极和所述第二电极至少之一。
  5. 如权利要求4所述的触控基板，其中，所述第二电极连接所述变色控制走线；所述第一电极连接所述触控电极图形。
  6. 如权利要求5所述的触控基板，其中，所述第一电极与所述触控电极图形的材质相同且同层形成。
  7. 如权利要求3-6任一项所述的触控基板，还包括形成在所述电致变色材料上方的绝缘层，其中，所述电致变色材料的一部分伸出所述绝缘层；
    所述第二电极形成在所述电致变色材料伸出所述绝缘层的部分的上方；所述变色控制走线形成在所述绝缘层上，所述第二电极与所述变色控制走线的材质相同。
  8. 如权利要求1-6任一项所述的触控基板，还包括形成在基底的边框区域的遮光图形；其中，所述遮光图形具有至少一个镂空部分，所述电致变色结构填充到所述镂空部分中。
  9. 如权利要求8所述的触控基板，其中，所述遮光图形包括多条横纵交叉的遮光线条，相邻的所述横纵交叉线条围设出的区域为所述镂空部分。
  10. 如权利要求9所述的触控基板，其中，所述边框区域设置有至少两个所述电致变色结构，每个所述电致变色结构均分别包括第一电极、第二电极和位于所述第一电极和所述第二电极之间的电致变色材料，至少两个所述电致变色结构中的所述电致变色材料不相同；或者，
    所述边框区域设置有一个所述电致变色结构，所述电致变色结构包括第一电极、第二电极和位于所述第一电极和第二电极之间的电致变色材料，在位于至少两个不同位置处的电致变色材料不相同。
  11. 如权利要求2-6、10任一项所述的触控基板，其中，所述电致变色材料包括有机电致变色材料或无机电致变色材料；
    所述有机电致变色材料包括聚噻吩类及其衍生物、紫罗精类、四硫富瓦烯、金属酞菁类化合物以及聚苯胺类中的一种或者几种，
    所述无机电致变色材料包括三氧化钨、三氧化钼以及五氧化二钒中的一种或多种。
  12. 一种触控基板的制作方法，包括：
    在基底的触控区域形成触控电极图形；
    在所述基底的边框区域形成电致变色结构。
  13. 如权利要求12所述的方法，其中，在所述基底上的边框区域形成所述电致变色结构包括：
    在所述基底的边框区域形成第一电极、第二电极和位于所述第一电极与所述第二电极之间的电致变色材料。
  14. 如权利要求13所述的方法，还包括在所述基底的边框区域形成变色控制走线，其中，所述变色控制走线被配置来控制所述电致变色结构变色，所述变色控制走线连接所述第一电极和所述第二电极至少之一。
  15. 如权利要求13所述的制作方法，其中，在所述基底的边框区域形成第一电极、第二电极和位于第一电极与第二电极之间的电致变色材料包括：
    在所述基底的边框区域形成遮光图形；所述遮光图形具有至少一个镂空部分；
    在所述遮光图形的每一个镂空部分中，形成所述第一电极，在第一电极上方形成电致变色材料，在电致变色材料上方形成所述第二电极。
  16. 如权利要求15所述的制作方法，其中，在所述遮光图形的每一个镂空部分中形成电致变色材料包括：
    通过丝网印刷工艺形成电致变色材料。
  17. 如权利要求13所述的制作方法，其中，
    在所述基底的边框区域形成第一电极、第二电极和位于第一电极与第二 电极之间的电致变色材料包括：在形成所述触控电极图形的同一构图工艺中形成所述第一电极。
  18. 如权利要求14所述的制作方法，还包括：在所述电致变色材料之上形成绝缘层；其中，所述电致变色材料的一部分伸出所述绝缘层；
    在所述基底的边框区域形成第一电极、第二电极和位于第一电极与第二电极之间的电致变色材料以及形成用于控制电致变色结构的变色控制走线包括：
    通过同一构图工艺形成第二电极和变色控制走线，所述第二电极位于电致变色材料伸出所述绝缘层的部分上，所述变色控制走线位于所述绝缘层上。
  19. 一种触控显示装置，包括变色控制单元和权利要求1-11任一项所述的触控基板，其中，所述变色控制单元被配置来控制所述电致变色结构变色。
  20. 如权利要求19所述的触控显示装置，还包括检测单元，所述检测单元被配置来在所述触控电极图形被触摸状态下生成触控信号；所述变色控制单元被配置来在接收到所述检测单元生成的触控信号时，控制所述电致变色结构变色。
PCT/CN2016/100696 2015-10-23 2016-09-29 触控基板及其制作方法、触控显示装置 WO2017067377A1 (zh)

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