WO2018086200A1 - 可弯折柔性触摸屏及柔性触摸显示屏 - Google Patents

可弯折柔性触摸屏及柔性触摸显示屏 Download PDF

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Publication number
WO2018086200A1
WO2018086200A1 PCT/CN2016/111621 CN2016111621W WO2018086200A1 WO 2018086200 A1 WO2018086200 A1 WO 2018086200A1 CN 2016111621 W CN2016111621 W CN 2016111621W WO 2018086200 A1 WO2018086200 A1 WO 2018086200A1
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WIPO (PCT)
Prior art keywords
electrode
bent portion
flexible touch
circuit board
diamond
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/111621
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English (en)
French (fr)
Inventor
余赟
李波
李仁佑
陈鼎国
赵勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Publication date
Application filed by Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to US15/324,496 priority Critical patent/US10303312B2/en
Publication of WO2018086200A1 publication Critical patent/WO2018086200A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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 OR CALCULATING; 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
    • G06F3/047—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using sets of wires, e.g. crossed wires
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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 OR CALCULATING; 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

  • the present invention relates to the field of display technologies, and in particular, to a bendable flexible touch screen and a flexible touch display screen having the same.
  • touch panels have been widely used as a new input device in the field of touch display technology.
  • the touch panel includes a resistive type, a capacitive type, an optical type, an electromagnetic type, etc., wherein the capacitive touch screen has the advantages of fast response, good reliability, high durability, multi-touch, etc., and is applied more on mobile terminals.
  • today's mobile terminals such as mobile phones, smart watches, smart bracelets, etc. have a tendency to become thinner and lighter and flexible to bend. Therefore, for a touch panel used in a portable terminal, flexibility, that is, thinness and flexibility are required to be gradually required.
  • the most commonly used flexible touch screen is an external capacitive touch screen.
  • the flexible plastic is used as the substrate, and the transparent conductive film electrode and the surrounding metal trace are fabricated thereon, and then attached to the flexible display through the bonding process.
  • the most commonly used transparent electrode material is ITO.
  • the preparation process is relatively mature, but its brittleness is high. When the flexible display device is bent during use, the ITO transparent sensing electrode is prone to stress concentration and cracks and expansion. Causes poor touch performance.
  • ITO such as nano silver wire, graphene, carbon nanotubes, conductive polymer, etc., which not only have the same electrical conductivity as ITO, but also have high light transmittance and strong bendability. Because these high-performance advanced materials are not mass-produced, the cost of material synthesis preparation is relatively high.
  • the prior art flexible touch screen has poor bending resistance, and the electrode of the often bent portion is affected by the stress, which causes damage to the line and affects product quality. Therefore, it is required to provide a good bending resistance.
  • Flexible touch screen
  • the invention provides a bendable flexible touch screen structure, which can enhance the stress tolerance of the electrode when bending, by changing the material of the electrode which is easily damaged, so as to solve the bending stress of the electrode of the existing flexible touch screen. A technical problem that affects and damages, thereby affecting the touch effect.
  • the present invention provides a bendable flexible touch screen, which includes:
  • a flexible substrate comprising a window region, a non-window region and a bent portion, the bent portion being located at an intermediate position of the window region;
  • Driving electrodes are laterally arranged in the window region
  • the sensing electrodes are longitudinally arranged in the window region, and the sensing electrodes and the driving electrodes are insulated from each other;
  • the flexible substrate edge is respectively provided with a first circuit board binding area and a second circuit board binding area, the first circuit board binding area is located at a left part of the bent portion, and the second circuit board is tied a fixed area is located at a right portion of the bent portion, wherein an electrode lead located at a left portion of the bent portion is coupled to the first circuit board bonding region, and an electrode lead located at a right portion of the bent portion is connected a second circuit board bonding area, the electrode lead located at the bent portion is connected to the first circuit board bonding area or the second circuit board bonding area;
  • the electrode located at the bent portion is made of a bend-resistant transparent electrode material.
  • the electrode pattern located in the bent portion is made of silver nanowires, conductive high molecular polymer or graphene as an electrode material.
  • the electrode pattern located outside the bent portion uses indium tin oxide as the electrode material.
  • the electrode pattern located outside the bent portion and the electrode pattern located in the bent portion are made of the same electrode material.
  • the driving electrode includes a first diamond-shaped electrode and a second diamond-shaped electrode, and a connecting line is integrally formed between the first diamond-shaped electrode and the second diamond-shaped electrode.
  • the upper portion is provided with a transparent insulating layer;
  • the sensing electrode includes a symmetrical third diamond electrode and a fourth diamond electrode, wherein the first diamond electrode and the second diamond electrode are connected by an electrode bridge, the electrode The bridge wire is located on the upper surface of the transparent insulating layer.
  • the transparent insulating layer is deposited on an overlapping portion of the driving electrode and the sensing electrode, and the transparent insulating layer is a silicon oxide film.
  • each of the driving electrodes and the sensing electrodes are respectively connected with an electrode lead, and the other end of the electrode lead is connected to the circuit board bonding area, wherein the electrode lead is arranged on the non- Window area.
  • the invention also provides a bendable flexible touch screen comprising:
  • a flexible substrate comprising a window region, a non-window region and a bent portion, the bent portion being located at an intermediate position of the window region;
  • Driving electrodes are laterally arranged in the window region
  • the sensing electrodes are longitudinally arranged in the window region, and the sensing electrodes are insulated from the driving electrodes;
  • the electrode located at the bent portion is made of a bend-resistant transparent electrode material.
  • the electrode pattern located in the bent portion is made of silver nanowires, conductive high molecular polymer or graphene as an electrode material.
  • the electrode pattern located outside the bent portion uses indium tin oxide as the electrode material.
  • the electrode pattern located outside the bent portion and the electrode pattern located in the bent portion are made of the same electrode material.
  • the driving electrode includes a first diamond-shaped electrode and a second diamond-shaped electrode, and a connecting line is integrally formed between the first diamond-shaped electrode and the second diamond-shaped electrode.
  • the upper portion is provided with a transparent insulating layer;
  • the sensing electrode includes a symmetrical third diamond electrode and a fourth diamond electrode, wherein the first diamond electrode and the second diamond electrode are connected by an electrode bridge, the electrode The bridge wire is located on the upper surface of the transparent insulating layer.
  • each of the driving electrodes and the sensing electrodes are respectively connected with an electrode lead, and the other end of the electrode lead is connected to the circuit board bonding area, wherein the electrode lead is arranged on the non- Window area.
  • a bendable flexible touch display screen comprising:
  • a bendable flexible touch screen disposed on an upper surface of the flexible display screen and electrically connected to the flexible display screen;
  • the bendable flexible touch screen includes:
  • a flexible substrate having a window region, a bent portion and a non-window region, the bent portion being located at an intermediate position of the window region;
  • Driving electrodes are laterally arranged in the window region
  • the sensing electrodes are longitudinally arranged in the window region, and the sensing electrodes are insulated from the driving electrodes;
  • the electrode located at the bent portion is made of a bend-resistant transparent electrode material.
  • the electrode pattern located in the bent portion is made of silver nanowires, conductive high molecular polymer or graphene as an electrode material.
  • each of the driving electrodes and the sensing electrodes are respectively connected with electrode leads
  • the flexible substrate edges are respectively provided with a first circuit board bonding area and a second circuit board binding area
  • a first circuit board bonding area is located at a left portion of the bent portion
  • the second circuit board bonding area is located at a right portion of the bent portion
  • an electrode lead connection located at a left portion of the bent portion The first circuit board bonding area, an electrode lead located at a right portion of the bent portion is connected to the second circuit board bonding area, and an electrode lead located at the bent portion is connected to the first circuit board bonding Zone or second board bonding area.
  • the flexible touch screen of the present invention replaces part of the electrode at the bend with the electrode material that is resistant to bending, so that the electrode pair at the bend of the flexible touch screen is bent.
  • the degree of stress is strengthened, thereby prolonging the service life of the flexible touch screen; the prior art flexible touch screen is solved, and the bending resistance is poor, and the electrode of the often bent portion is affected by the stress, which causes damage to the line and affects the technical quality of the product.
  • FIG. 1 is a schematic structural view 1 of a flexible touch screen of the present invention.
  • FIG. 2 is a schematic view showing the structure of an electrode of a flexible touch screen of the present invention.
  • FIG. 3 is a schematic structural view 2 of a flexible touch screen of the present invention.
  • the present invention is directed to the existing flexible touch screen, and the frequently bent portion of the flexible touch screen is affected by the stress generated when the bending is performed, so that the electrode at the bending portion is easily worn or broken, thereby affecting the technical problem of the touch effect of the flexible touch screen.
  • This embodiment can solve the drawback.
  • the bendable flexible touch screen of the present invention includes a flexible substrate 101 having a window area 102 defined thereon, the window area 102 corresponding to a display area of a display screen, and the window area 102
  • the outer side is a non-display area 103, and the middle position of the window area 102 is set as a bent portion 104, that is, the entire flexible touch screen can be folded in the center line M-M' of the window area 102, and the bent portion 104 is folded.
  • the flexible touch screen is bent, it is located in a region where the bending degree is large near the center line M-M'.
  • the driving electrode 105 and the sensing electrode 106 are distributed in the entire window area 102.
  • the driving electrodes 105 are arranged in a lateral direction
  • the sensing electrodes 106 are arranged in a longitudinal direction
  • the driving electrodes 105 and the sensing electrodes 106 are insulated from each other.
  • the driving electrode 105 and the sensing electrode 106 are respectively connected with an electrode lead 107, the electrode lead 107 is arranged in the non-display area 103, and the electrode lead 107 is connected to the circuit board binding area 108 at the other end, thereby being connected and controlled. chip.
  • the electrode located in the bent portion 104 is made of a bend-resistant transparent electrode material, for example, using silver nanowires, a conductive high molecular polymer or graphene as an electrode material, thereby enhancing the bending resistance of the flexible touch screen.
  • the touch electrode includes a driving electrode and a sensing electrode
  • the driving electrode includes a first diamond electrode 2051 and a second diamond electrode 2052 , and the first diamond electrode 2051 and the second diamond electrode.
  • a connecting wire 2053 is integrally formed between 2052, and a transparent insulating layer 207 is disposed on an upper portion of the connecting wire 2053;
  • the sensing electrode includes a third diamond electrode 2061 and a fourth diamond electrode 2052, wherein the first The diamond electrode 2051 and the second diamond electrode 2052 are connected by an electrode bridge 2054, and the electrode bridge 2054 is located on the upper surface of the transparent insulating layer 207.
  • a transparent insulating layer 207 is deposited on the overlapping portion of the driving electrode and the sensing electrode, and the transparent insulating layer 207 may be about 50 nm PECVD (Plasma) Enhanced Chemical Vapor Deposition - deposited SiOx (silicon oxide) film.
  • the preparation process includes:
  • the flexible substrate is prepared.
  • an ITO (Indium Tin Oxide) transparent conductive capacitance sensing layer is prepared in the window region of the flexible substrate and patterned.
  • an electrode bridge wire and an electrode lead of a common material are prepared in a non-bending portion, for example, a copper or silver metal wire deposited by AL (wet etching) etching or PVD (physical vapor deposition).
  • AL wet etching
  • PVD physical vapor deposition
  • the ITO transparent electrode layer in the bent portion is etched away.
  • a bend-resistant nano silver wire, a conductive high molecular polymer or a graphene polymer layer is coated in the bent portion and laser-etched into an electrode of a desired pattern.
  • an electrode bridge wire and an electrode lead using a bend resistant material are prepared in the bent portion.
  • the electrode and the electrode lead in the bent portion and the electrode and the electrode lead outside the bent portion are separately prepared from different materials, and the electrode and the electrode lead located in the bent portion are made of a bending resistant material.
  • Other areas use ordinary metal materials, thereby reducing the problem of poor line defects caused by bending deformation or fracture of the electrodes or electrode leads due to bending stress at the bend.
  • the flexible substrate is prepared.
  • an ITO (Indium Tin Oxide) transparent conductive capacitance sensing layer is prepared in the window region of the flexible substrate and patterned.
  • the ITO transparent electrode layer in the bent portion is etched away.
  • a bend-resistant nano silver wire, a conductive high molecular polymer or a graphene polymer layer is coated in the bent portion and laser-etched into an electrode of a desired pattern.
  • electrode bridge wiring is prepared on the surface of the window region, and electrode leads are prepared around the window region, and the electrode bridge wires and the electrode leads are prepared by using a bending resistant material.
  • the flexible touch screen of the embodiment saves the steps of preparing the electrode bridge wiring and the electrode lead once, thereby simplifying the process flow and reducing the possibility of the line defect caused by the bending deformation or the breakage of the trace. Sex.
  • the flexible touch screen in this embodiment includes a flexible substrate 301 having a window area 302 defined thereon, the window area 302 corresponding to a display area of the display screen, and the window area 302
  • the outer side is a non-display area 303, and the middle position of the window area 302 is set as a bent portion 304, that is, the entire flexible touch screen can be folded in the center line M-M' of the window area 302, and the bent portion 304 is When the flexible touch screen is bent, it is located in a region where the bending degree is large near the center line M-M'.
  • a driving electrode 305 and a sensing electrode 306 are arranged in the entire window area 302.
  • the driving electrodes 305 are arranged in a lateral direction
  • the sensing electrodes 306 are arranged in a longitudinal direction
  • the driving electrodes 305 and the sensing electrodes 306 are insulated from each other.
  • the driving electrode 305 is connected to the first electrode lead 307
  • the sensing electrode 306 is connected to the second electrode lead 308, and the first electrode lead 307 and the second electrode lead 308 are arranged in the non-display area 303.
  • the first electrode lead 307 is connected to the first circuit board bonding area 309 with respect to the other end
  • the second electrode lead 308 is connected to the second circuit board bonding area 310 with respect to the other end, thereby connecting the control chip.
  • the edge of the flexible substrate 301 is respectively provided with a first circuit board binding area 309 and a second circuit board binding area 310, and the first circuit board binding area 309 is located at the left part of the bending part 304,
  • the second circuit board bonding area 310 is located at a right portion of the bent portion 304, wherein a first electrode lead 307 located at a left portion of the bent portion 304 is connected to the first circuit board bonding area 309, located at the a second electrode lead 307 at a right portion of the bent portion 304 is connected to the second circuit board bonding region 310, and a third electrode lead 311 located at the bent portion 304 is connected to the first circuit board bonding region 309 or
  • the second board is bound to the area 310.
  • the flexible touch screen of the present embodiment is different from the above embodiment in that the electrode lead 307 disposed on the surface of the flexible substrate 301 is disposed away from the bent portion 304, thereby preventing the long-term use in the bent state.
  • the third electrode lead 311 of the folded portion 304 is deformed by the bending stress, and a short circuit occurs, which affects the normal function of the touch screen.
  • the bent portion 304 has no pass through, Significantly improve product yield.
  • a bendable flexible touch display screen comprising: a flexible display screen; a flexible touch screen located on an upper surface of the flexible display screen and electrically connected to the flexible display screen
  • the flexible touch screen comprises: a flexible substrate having a window region and a bent portion, the bent portion being located at an intermediate position of the window region; driving electrodes laterally arranged in the window region; sensing electrodes arranged longitudinally In the window region, the sensing electrode and the driving electrode are insulated from each other; wherein a part of the electrode located in the bent portion is made of a bending-resistant transparent electrode material.
  • the partial electrode pattern located in the bent portion is made of silver nanowires, a conductive high molecular polymer or graphene as an electrode material.
  • each of the driving electrodes and the sensing electrodes are respectively connected with electrode leads
  • the flexible substrate edges are respectively provided with a first circuit board bonding area and a second circuit board binding area
  • a first circuit board bonding area is located at a left portion of the bent portion
  • the second circuit board bonding area is located at a right portion of the bent portion
  • an electrode lead connection located at a left portion of the bent portion The first circuit board bonding area, an electrode lead located at a right portion of the bent portion is connected to the second circuit board bonding area, and an electrode lead located at the bent portion is connected to the first circuit board bonding Zone or second board bonding area.
  • the working principle of the flexible touch display screen of the preferred embodiment is consistent with the working principle of the flexible touch screen of the above preferred embodiment.
  • the flexible touch screen of the present invention replaces the electrode of the bent portion with the electrode material that is resistant to bending, so that the electrode pair at the bend of the flexible touch screen is bent.
  • the degree of stress is strengthened, thereby prolonging the service life of the flexible touch screen; the prior art flexible touch screen is solved, and the bending resistance is poor, and the electrode of the often bent portion is affected by the stress, which causes damage to the line and affects the technical quality of the product.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)

Abstract

一种可沿中间弯折的柔性触摸屏，包含具有触控功能的视窗区（302）、弯折部分（304）以及视窗区（302）边缘用以排布走线的非视窗区（303），位于弯折部分（304）的部分电极采用耐弯折的透明电极材料；有益效果为：弯折处的部分电极为耐弯折电极材料，柔性触摸屏弯折部分应力抵抗增强，柔性触摸屏的使用寿命延长。

Description

可弯折柔性触摸屏及柔性触摸显示屏 技术领域
本发明涉及显示技术领域，尤其涉及一种可弯折柔性触摸屏及具有该柔性触摸屏的柔性触摸显示屏。
 背景技术
在显示技术领域，触控面板作为一种新的输入装置已经在触控显示屏技术领域得到广泛应用。触控面板包括电阻式、电容式、光学式、电磁式等，其中电容式触摸屏具有反应快、可靠度佳及耐用度高、可实现多点触控等优势，在移动终端机上应用较多。同时随着柔性显示技术的发展，现在的移动终端如手机、智能手表、智能手环等都有向轻薄化，柔性可弯折方向发展的趋势。因此，对于在便携终端中使用的触摸屏，也逐渐开始要求柔性、即要求薄度和易弯曲性。
目前柔性触摸屏最常使用的是外挂式电容触摸屏，选用柔性塑料做基材，在其上制作透明导电膜电极及周边金属走线，然后通过贴合工艺贴附到柔性显示屏上应用。而现在最常用的透明电极材料是ITO，其制备工艺相对成熟，但其脆性较高，柔性显示设备在使用过程中进行弯折时，ITO透明感应电极很容易产生应力集中而出现裂纹并扩展，导致触摸性能不良。现在已有ITO的替代材料产生，如纳米银线、石墨烯、碳纳米管、导电高分子聚合物等，不仅具有与ITO相当的导电性能，而且光透过率高、可弯折性强，因这些高性能的先进材料无大量量产，材料合成制备成本相对较高。
综上所述，现有技术的柔性触摸屏，耐弯折性较差，经常弯折部位的电极受应力影响而导致线路损坏，影响产品品质，因此，需要提供一种耐弯折性较好的柔性触摸屏。
因此改善柔性触摸屏透明导电电极层的结构设计，既能实现可弯折性，又能降低制作成本，是本提案解决的关键问题。
 技术问题
本发明提供一种可弯折柔性触摸屏结构，通过改变易损坏部分电极的材质，能够增强电极对弯折时产生的应力的承受度，以解决现有柔性触摸屏经常弯折部分的电极受弯曲应力影响而损坏，进而影响触控效果的技术问题。
 技术解决方案
为了解决上述技术问题，本发明提供一种可弯折柔性触摸屏,其包括：
柔性基底，其包含有视窗区、非视窗区及弯折部分，所述弯折部分位于所述视窗区中间位置；
驱动电极，横向排列于所述视窗区内；
感应电极，纵向排列于所述视窗区内，所述感应电极与所述驱动电极相互绝缘；
所述柔性基底边缘分别设置有第一电路板绑定区与第二电路板绑定区，所述第一电路板绑定区位于所述弯折部分的左部，所述第二电路板绑定区位于所述弯折部分的右部，其中，位于所述弯折部分左部的电极引线连接所述第一电路板绑定区，位于所述弯折部分右部的电极引线连接所述第二电路板绑定区，位于所述弯折部分的电极引线连接所述第一电路板绑定区或第二电路板绑定区；其中，
位于所述弯折部分的电极采用耐弯折的透明电极材料。
根据本发明的一优选实施例，位于所述弯折部分的电极图案采用银纳米线、导电高分子聚合物或石墨烯作为电极材料。
根据本发明的一优选实施例，位于所述弯折部分以外的电极图案采用铟锡氧化物作为电极材料。
根据本发明的一优选实施例，位于所述弯折部分以外的电极图案与位于所述弯折部分内的电极图案采用相同的电极材料。
根据本发明的一优选实施例，所述驱动电极包括相对称的第一菱形电极与第二菱形电极，所述第一菱形电极与第二菱形电极之间一体成型有连接线，所述连接线上部设置有透明绝缘层；所述感应电极包括相对称的第三菱形电极与第四菱形电极，其中，所述第一菱形电极与第二菱形电极之间通过电极桥接线连接，所述电极桥接线位于所述透明绝缘层上表面。
根据本发明的一优选实施例，所述透明绝缘层沉积于所述驱动电极与感应电极的重叠部位，所述透明绝缘层为氧化硅薄膜。
根据本发明的一优选实施例，每一所述驱动电极与感应电极分别连接有电极引线，所述电极引线的另一端连接电路板绑定区，其中，所述电极引线排布于所述非视窗区。
本发明还提供一种可弯折柔性触摸屏,其包括：
柔性基底，其包含有视窗区、非视窗区及弯折部分，所述弯折部分位于所述视窗区中间位置；
驱动电极，横向排列于所述视窗区内；
感应电极，纵向排列于所述视窗区内，所述感应电极与所述驱动电极相互绝缘；其中，
位于所述弯折部分的电极采用耐弯折的透明电极材料。
根据本发明的一优选实施例，位于所述弯折部分的电极图案采用银纳米线、导电高分子聚合物或石墨烯作为电极材料。
根据本发明的一优选实施例，位于所述弯折部分以外的电极图案采用铟锡氧化物作为电极材料。
根据本发明的一优选实施例，位于所述弯折部分以外的电极图案与位于所述弯折部分内的电极图案采用相同的电极材料。
根据本发明的一优选实施例，所述驱动电极包括相对称的第一菱形电极与第二菱形电极，所述第一菱形电极与第二菱形电极之间一体成型有连接线，所述连接线上部设置有透明绝缘层；所述感应电极包括相对称的第三菱形电极与第四菱形电极，其中，所述第一菱形电极与第二菱形电极之间通过电极桥接线连接，所述电极桥接线位于所述透明绝缘层上表面。
根据本发明的一优选实施例，每一所述驱动电极与感应电极分别连接有电极引线，所述电极引线的另一端连接电路板绑定区，其中，所述电极引线排布于所述非视窗区。
依据本发明的上述目的，提出一种可弯折柔性触摸显示屏，包括：
可挠性显示屏；
可弯折柔性触摸屏，位于所述可挠性显示屏上表面并与所述可挠性显示屏电性连接；
所述可弯折柔性触摸屏包括：
柔性基底，其具有视窗区、弯折部分和非视窗区，所述弯折部分位于所述视窗区中间位置；
驱动电极，横向排列于所述视窗区内；
感应电极，纵向排列于所述视窗区内，所述感应电极与所述驱动电极相互绝缘；其中，
位于所述弯折部分的电极采用耐弯折的透明电极材料。
根据本发明的一优选实施例，位于所述弯折部分的电极图案采用银纳米线、导电高分子聚合物或石墨烯作为电极材料。
根据本发明的一优选实施例，每一所述驱动电极与感应电极分别连接有电极引线，所述柔性基底边缘分别设置有第一电路板绑定区与第二电路板绑定区，所述第一电路板绑定区位于所述弯折部分的左部，所述第二电路板绑定区位于所述弯折部分的右部，其中，位于所述弯折部分左部的电极引线连接所述第一电路板绑定区，位于所述弯折部分右部的电极引线连接所述第二电路板绑定区，位于所述弯折部分的电极引线连接所述第一电路板绑定区或第二电路板绑定区。
 有益效果
本发明的有益效果为：相较于现有的柔性触摸屏，本发明的柔性触摸屏，将弯折处的部分电极替换为耐弯折的电极材料，使得柔性触摸屏弯折处的电极对弯折产生的应力程度加强，进而延长柔性触摸屏的使用寿命；解决了现有技术的柔性触摸屏，耐弯折性较差，经常弯折部位的电极受应力影响而导致线路损坏，影响产品品质的技术问题。
 附图说明
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明柔性触摸屏的结构示意图一；
图2为本发明柔性触摸屏的电极结构示意图；
图3为本发明柔性触摸屏的结构示意图二。
 本发明的最佳实施方式
以下各实施例的说明是参考附加的图示，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。在图中，结构相似的单元是用以相同标号表示。
本发明针对现有的柔性触摸屏，柔性触摸屏经常弯折的部位因受弯折时产生的应力影响，导致弯折处的电极易磨损或断裂，进而影响柔性触摸屏的触控效果的技术问题，本实施例能够解决该缺陷。
如图1所示，本发明的可弯折柔性触摸屏，包括有柔性基底101，所述柔性基底101表面界定有视窗区102，所述视窗区102对应显示屏的显示区，所述视窗区102的外侧为非显示区103，所述视窗区102的中间位置设置为弯折部分104，即整个柔性触摸屏能够以所述视窗区102的中线M-M’为轴对折，所述弯折部分104为所述柔性触摸屏在弯折时，位于所述中线M-M’附近折弯程度较大的区域。
整个所述视窗区102内分布有驱动电极105与感应电极106，所述驱动电极105呈横向排列，所述感应电极106呈纵向排列，所述驱动电极105与感应电极106相互绝缘。
所述驱动电极105与感应电极106分别连接有电极引线107，所述电极引线107排布于所述非显示区103，所述电极引线107相对另一端连接电路板绑定区108，进而连通控制芯片。
其中，位于所述弯折部分104内的电极采用耐弯折的透明电极材料，例如使用银纳米线、导电高分子聚合物或石墨烯作为电极材料，进而增强柔性触摸屏的耐弯折度。
如图2所示，为触控电极，包括驱动电极与感应电极，所述驱动电极包括相对称的第一菱形电极2051与第二菱形电极2052，所述第一菱形电极2051与第二菱形电极2052之间一体成型有连接线2053，所述连接线2053上部设置有透明绝缘层207；所述感应电极包括相对称的第三菱形电极2061与第四菱形电极2052，其中，所述第一菱形电极2051与第二菱形电极2052之间通过电极桥接线2054连接，所述电极桥接线2054位于所述透明绝缘层207上表面。
优选的，所述驱动电极与感应电极的重叠部位沉积透明绝缘层207，所述透明绝缘层207可以为50nm左右PECVD（Plasma Enhanced Chemical Vapor Deposition--等离子体增强化学气相沉积法）沉积的SiOx（氧化硅）薄膜。
本发明的技术方案可通过以下实施例来实现，现作出具体说明。
实施例一
本实施例中的柔性触摸屏，制备过程包括：
第一步，制备所述柔性基底。
第二步，在所述柔性基底的视窗区制备ITO（铟锡氧化物）透明导电电容感应层，并将其图形化。
第三步，在非弯折部分制备普通材质的电极桥接线及电极引线，例如，通过AL（湿法蚀刻）腐蚀或PVD（物理气相沉积法）沉积的铜、银材质的金属走线。
第四步，将所述弯折部分内的ITO透明电极层蚀刻掉。
第五步，在所述弯折部分内涂布耐弯折的纳米银线、导电高分子聚合物或石墨烯聚合物层，并通过激光蚀刻为所需图案的电极。
第六步，在所述弯折部分内制备采用耐折弯材料的电极桥接线及电极引线。
本实施例的柔性触摸屏，将弯折部分内的电极和电极引线以及弯折部分外的电极和电极引线用不同的材料分别制备，位于弯折部分内的电极和电极引线采用耐弯折材料，其他区域采用普通金属材料，从而降低弯折处受弯曲应力导致电极或电极引线弯曲变形或断裂引起的线路不良的问题。
实施例二
本实施例中的柔性触摸屏，其制备过程包括：
第一步，制备所述柔性基底。
第二步，在所述柔性基底的视窗区制备ITO（铟锡氧化物）透明导电电容感应层，并将其图形化。
第三步，将所述弯折部分内的ITO透明电极层蚀刻掉。
第四步，在所述弯折部分内涂布耐弯折的纳米银线、导电高分子聚合物或石墨烯聚合物层，并通过激光蚀刻为所需图案的电极。
第五步，在所述视窗区表面制备采用电极桥接线，并在所述视窗区周边制备电极引线，所述电极桥接线与电极引线采用耐折弯材料制备。
本实施例的柔性触摸屏，与实施例一相比，节省了一次制备电极桥接线与电极引线的步骤，从而简化了工艺流程，并且降低走线因弯曲变形或断裂引起的线路不良问题发生的可能性。
实施例三
如图3所示，本实施例中的柔性触摸屏，包括有柔性基底301，所述柔性基底301表面界定有视窗区302，所述视窗区302对应显示屏的显示区，所述视窗区302的外侧为非显示区303，所述视窗区302的中间位置设置为弯折部分304，即整个柔性触摸屏能够以所述视窗区302的中线M-M’为轴对折，所述弯折部分304为所述柔性触摸屏在弯折时，位于所述中线M-M’附近折弯程度较大的区域。
整个所述视窗区302内分布有驱动电极305与感应电极306，所述驱动电极305呈横向排列，所述感应电极306呈纵向排列，所述驱动电极305与感应电极306相互绝缘。
所述驱动电极305连接有第一电极引线307，所述感应电极306连接有第二电极引线308，所述第一电极引线307与第二电极引线308排布于所述非显示区303，所述第一电极引线307相对另一端连接第一电路板绑定区309，所述第二电极引线308相对另一端连接第二电路板绑定区310，进而连通控制芯片。
所述柔性基底301边缘分别设置有第一电路板绑定区309与第二电路板绑定区310，所述第一电路板绑定区309位于所述弯折部分304的左部，所述第二电路板绑定区310位于所述弯折部分304的右部，其中，位于所述弯折部分304左部的第一电极引线307连接所述第一电路板绑定区309，位于所述弯折部分304右部的第二电极引线307连接所述第二电路板绑定区310，位于所述弯折部分304的第三电极引线311连接所述第一电路板绑定区309或第二电路板绑定区310。
本实施例的柔性触摸屏，与上述实施例的区别在于，将设置于所述柔性基底301表面的电极引线307避开所述弯折部分304设置，从而防止长期处于弯折使用状态下，经过弯折部分304的第三电极引线311因受弯曲应力而变形，产生断裂而发生短路，影响触摸屏正常功能实现，通过设置两个电路板绑定区，所述弯折部分304无走线通过，可明显提高产品良率。
依据本发明的上述目的，提出一种可弯折柔性触摸显示屏，包括：可挠性显示屏；柔性触摸屏，位于所述可挠性显示屏上表面并与所述可挠性显示屏电性连接；所述柔性触摸屏包括：柔性基底，其具有视窗区及弯折部分，所述弯折部分位于所述视窗区中间位置；驱动电极，横向排列于所述视窗区内；感应电极，纵向排列于所述视窗区内，所述感应电极与所述驱动电极相互绝缘；其中，位于所述弯折部分的部分电极采用耐弯折的透明电极材料。
根据本发明的一优选实施例，位于所述弯折部分的部分电极图案采用银纳米线、导电高分子聚合物或石墨烯作为电极材料。
根据本发明的一优选实施例，每一所述驱动电极与感应电极分别连接有电极引线，所述柔性基底边缘分别设置有第一电路板绑定区与第二电路板绑定区，所述第一电路板绑定区位于所述弯折部分的左部，所述第二电路板绑定区位于所述弯折部分的右部，其中，位于所述弯折部分左部的电极引线连接所述第一电路板绑定区，位于所述弯折部分右部的电极引线连接所述第二电路板绑定区，位于所述弯折部分的电极引线连接所述第一电路板绑定区或第二电路板绑定区。
本优选实施例的柔性触摸显示屏的工作原理跟上述优选实施例的柔性触摸屏的工作原理一致， 具体可参考上述优选实施例的柔性触摸屏的工作原理，此处不再做赘述。
本发明的有益效果为：相较于现有的柔性触摸屏，本发明的柔性触摸屏，将弯折部分的电极替换为耐弯折的电极材料，使得柔性触摸屏弯折处的电极对弯折产生的应力程度加强，进而延长柔性触摸屏的使用寿命；解决了现有技术的柔性触摸屏，耐弯折性较差，经常弯折部位的电极受应力影响而导致线路损坏，影响产品品质的技术问题。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (16)

  1. 一种可弯折柔性触摸屏，其包括：
    柔性基底，其包含视窗区、弯折部分和非视窗区，所述弯折部分位于所述视窗区的中间位置；
    驱动电极，横向排列于所述视窗区内；
    感应电极，纵向排列于所述视窗区内，所述感应电极与所述驱动电极相互绝缘；
    所述非视窗区分别设置有第一电路板绑定区与第二电路板绑定区，所述第一电路板绑定区位于所述弯折部分的左部，所述第二电路板绑定区位于所述弯折部分的右部，其中，位于所述弯折部分左部的电极引线连接所述第一电路板绑定区，位于所述弯折部分右部的电极引线连接所述第二电路板绑定区，位于所述弯折部分的电极引线连接所述第一电路板绑定区或第二电路板绑定区；其中，
    位于所述弯折部分的部分电极采用耐弯折的透明电极材料。
  2. 根据权利要求1所述的可弯折柔性触摸屏，其中，位于所述弯折部分的电极图案采用银纳米线、导电高分子聚合物或石墨烯作为电极材料。
  3. 根据权利要求2所述的可弯折柔性触摸屏，其中，位于所述弯折部分以外的电极图案采用铟锡氧化物作为电极材料。
  4. 根据权利要求2所述的可弯折柔性触摸屏，其中，位于所述弯折部分以外的电极图案与位于所述弯折部分内的电极图案采用相同的电极材料。
  5. 根据权利要求1所述的可弯折柔性触摸屏，其中，
    所述驱动电极包括相对称的第一菱形电极与第二菱形电极，所述第一菱形电极与第二菱形电极之间一体成型有连接线，所述连接线上部设置有透明绝缘层；
    所述感应电极包括相对称的第三菱形电极与第四菱形电极，其中，所述第一菱形电极与第二菱形电极之间通过电极桥接线连接，所述电极桥接线位于所述透明绝缘层上表面。
  6. 根据权利要求5所述的可弯折柔性触摸屏，其中，所述透明绝缘层沉积于所述驱动电极与感应电极的重叠部位，所述透明绝缘层为氧化硅薄膜。
  7. 根据权利要求1所述的可弯折柔性触摸屏，其中，每一所述驱动电极与感应电极分别连接有电极引线，所述电极引线的另一端连接电路板绑定区，其中，所述电极引线排布于所述非视窗区。
  8. 一种可弯折柔性触摸屏，其包括：
    柔性基底，其包含视窗区、弯折部分和非视窗区，所述弯折部分位于所述视窗区的中间位置；
    驱动电极，横向排列于所述视窗区内；
    感应电极，纵向排列于所述视窗区内，所述感应电极与所述驱动电极相互绝缘；其中，
    位于所述弯折部分的部分电极采用耐弯折的透明电极材料。
  9. 根据权利要求8所述的可弯折柔性触摸屏，其特征在于，位于所述弯折部分的电极图案采用银纳米线、导电高分子聚合物或石墨烯作为电极材料。
  10. 根据权利要求9所述的可弯折柔性触摸屏，其中，位于所述弯折部分以外的电极图案采用铟锡氧化物作为电极材料。
  11. 根据权利要求9所述的可弯折柔性触摸屏，其中，位于所述弯折部分以外的电极图案与位于所述弯折部分内的电极图案采用相同的电极材料。
  12. 根据权利要求8所述的可弯折柔性触摸屏，其中，
    所述驱动电极包括相对称的第一菱形电极与第二菱形电极，所述第一菱形电极与第二菱形电极之间一体成型有连接线，所述连接线上部设置有透明绝缘层；
    所述感应电极包括相对称的第三菱形电极与第四菱形电极，其中，所述第一菱形电极与第二菱形电极之间通过电极桥接线连接，所述电极桥接线位于所述透明绝缘层上表面。
  13. 根据权利要求8所述的可弯折柔性触摸屏，其中，每一所述驱动电极与感应电极分别连接有电极引线，所述电极引线的另一端连接电路板绑定区，其中，所述电极引线排布于所述非视窗区。
  14. 一种柔性触摸显示屏，其包括：
    可挠性显示屏；
    可弯折柔性触摸屏，位于所述可挠性显示屏上表面并与所述可挠性显示屏电性连接；
    所述可弯折柔性触摸屏包括：
    柔性基底，其上表面具有视窗区、弯折部分和非视窗区，所述弯折部分位于所述视窗区中间位置；
    驱动电极，横向排列于所述视窗区内；
    感应电极，纵向排列于所述视窗区内，所述感应电极与所述驱动电极相互绝缘；其中，
    位于所述弯折部分的电极采用耐弯折的透明电极材料。
  15. 根据权利要求14所述的柔性触摸显示屏，其中，位于所述弯折部分的电极图案采用银纳米线、导电高分子聚合物或石墨烯作为电极材料。
  16. 根据权利要求14所述的柔性触摸显示屏，其中，每一所述驱动电极与感应电极分别连接有电极引线，所述柔性基底边缘分别设置有第一电路板绑定区与第二电路板绑定区，所述第一电路板绑定区位于所述弯折部分的左部，所述第二电路板绑定区位于所述弯折部分的右部，其中，位于所述弯折部分左部的电极引线连接所述第一电路板绑定区，位于所述弯折部分右部的电极引线连接所述第二电路板绑定区，位于所述弯折部分的电极引线连接所述第一电路板绑定区或第二电路板绑定区。
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