WO2017143688A1 - 触控显示基板、触控显示屏及触控显示基板的制作方法 - Google Patents

触控显示基板、触控显示屏及触控显示基板的制作方法 Download PDF

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Publication number
WO2017143688A1
WO2017143688A1 PCT/CN2016/084303 CN2016084303W WO2017143688A1 WO 2017143688 A1 WO2017143688 A1 WO 2017143688A1 CN 2016084303 W CN2016084303 W CN 2016084303W WO 2017143688 A1 WO2017143688 A1 WO 2017143688A1
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WIPO (PCT)
Prior art keywords
transparent
substrate
touch display
electrode layer
front side
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PCT/CN2016/084303
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English (en)
French (fr)
Inventor
丁小梁
董学
王海生
陈小川
刘英明
杨盛际
刘伟
王鹏鹏
李昌峰
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 US15/540,221 priority Critical patent/US20180107324A1/en
Publication of WO2017143688A1 publication Critical patent/WO2017143688A1/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
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/22—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
    • G01L5/226—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers to manipulators, e.g. the force due to gripping
    • G01L5/228—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers to manipulators, e.g. the force due to gripping using tactile array force sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/16—Measuring force or stress, in general using properties of piezoelectric devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/205—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using distributed sensing elements
    • 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
    • G02F1/1343—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
    • G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
    • G06F3/04144—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position using an array of force sensing 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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

  • At least one embodiment of the present disclosure relates to a touch display substrate, a touch display screen, and a touch display substrate.
  • touch display has gradually spread throughout people's lives.
  • the touch display screen can be divided into: resistive type, capacitive type, infrared type, surface acoustic wave type, electromagnetic type, vibration wave induction type, frustrated total internal reflection optical induction type, etc. according to the working principle.
  • capacitive touch screen displays have attracted wide attention due to their unique touch principle and high sensitivity, long life and high light transmittance.
  • the mutual capacitive touch display screen comprises a set of driving electrode lines and a set of detecting electrode lines which are mutually insulated and insulated, and the driving electrode lines and the detecting electrode lines are electrically connected to the flexible printed wiring board through the electrode lines, respectively.
  • the operation principle is as follows: when the finger touches the screen, the mutual capacitance between the driving electrode line and the detecting electrode line is changed, and the X-direction driving electrode line is scanned one by one, and each scanning driving electrode line is read every time.
  • the signal of the Y-direction detecting electrode line can scan the intersection of each driving electrode line and the detecting electrode line through one round of scanning, and determine the intersection point of the mutual capacitance change, thereby determining the coordinates of the touch point, and then The touch display is implemented based on the coordinates of the touch point.
  • At least one embodiment of the present disclosure provides a touch display substrate, including:
  • each of the piezoelectric detecting units including pressure sensitively disposed on a front side of the transparent back electrode layer a material layer and a transparent detecting electrode layer, the transparent detecting electrode layer being connected to the signal lead.
  • At least one embodiment of the present disclosure provides a touch display screen including the above touch display substrate.
  • At least one embodiment of the present disclosure further provides a method for fabricating a touch display substrate, including:
  • each piezoelectric detecting unit including a pressure sequentially disposed on a front side of the transparent back electrode layer a photosensitive material layer and a transparent detecting electrode layer, the transparent detecting electrode layer being connected to the signal lead.
  • FIG. 1 is a schematic diagram of a touch structure of a touch display substrate according to a first embodiment of the present disclosure
  • FIG. 2 is a schematic top plan view of a touch display substrate according to a second embodiment of the present disclosure
  • FIG. 3 is a schematic cross-sectional view of a touch display substrate according to a second embodiment of the present disclosure
  • FIG. 4 is a schematic top plan view of a touch display substrate according to a third embodiment of the present disclosure.
  • FIG. 5 is a schematic cross-sectional view of a touch display substrate according to a third embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of a principle of detecting a piezoelectric detecting unit
  • FIG. 7 is a flow chart of a method for fabricating a touch display substrate according to an embodiment of the invention.
  • the touch display substrate In order to enrich the touch interaction function of the touch display screen, the touch display substrate, the touch display screen including the touch display panel, and the like are provided.
  • a method of manufacturing a touch display substrate A method of manufacturing a touch display substrate.
  • a touch display substrate including:
  • each of the piezoelectric detecting units 3 including a transparent back electrode
  • the pressure sensitive material layer 31 and the transparent detecting electrode layer 32 above the layer 2, each of the transparent detecting electrode layers 32 is connected to the corresponding signal lead 4.
  • the touch display substrate further includes a planarization layer 5 located above the plurality of piezoelectric detecting units 3, and a transparent cover plate 6 located above the planarization layer 5.
  • front side may be understood to mean that the touch display screen is close to the side of the user when in use, and correspondingly, the side of the component away from the user may be understood as “back side”. ".
  • the pressure sensitive material layer 31 is pressed to generate a polarization charge, and the potential of the transparent detecting electrode layer 32 changes, and the transparent detecting electrode layer 32 and the transparent back are further The potential difference between the electrode layers 2 is changed, and therefore, the pressing pressure can be calculated by acquiring the potential of the transparent detecting electrode layer 32 (the detection principle of the piezoelectric detecting unit is as shown in Fig. 6). Based on this principle, a touch display with pressure detection function can be developed, which enriches the touch interaction function of the touch display and provides a higher level of operation experience for the user.
  • the user can apply different pressures to the screen of the touch display screen by using a finger or a stylus to achieve variable speed scrolling, zooming and panning of pictures, previewing and selecting functions, continuously variable game control, and unlocking a function. And wake up a function, open context menus, select brush thickness when drawing, image editing, caps lock and symbol selection.
  • the transparent substrate 1 is a substrate of the front substrate of the display module.
  • the transparent substrate of the color filter substrate 100 of the liquid crystal display module may be 1.
  • the transparent back electrode layer 2 is disposed on the front side of the transparent substrate 1 and can be connected to a fixed potential.
  • the transparent back electrode layer 2 is connected to the ground.
  • the potential of the transparent detecting electrode layer 32 is the potential generated by the pressing. Make detection calculations easier and more straightforward.
  • the transparent back electrode layer 2 and the transparent detecting electrode layer 32 may be made of a transparent conductive material such as indium tin oxide ITO or zinc oxide ZnO.
  • the material of the pressure sensitive material layer 31 is not limited, and a polymer pressure sensitive material, a metal and polymer composite pressure sensitive material, or an oxide pressure sensitive material, or the like can be used.
  • the structure of the planarization layer 5 is not limited. As shown in FIGS. 3 and 5, the planarization layer 5 includes an insulating layer 51 on the front side of the plurality of piezoelectric detecting units 3 and a transparent optical adhesive layer 52 on the front side of the insulating layer 51. .
  • the transparent substrate 1 is a transparent substrate of the color filter substrate 100, and the touch display substrate further includes a light shielding matrix 7 on the back side of the transparent substrate 1.
  • the projection of the lead 4 on the transparent substrate 1 falls within the projection of the light-shielding region of the light-shielding matrix 7 on the transparent substrate 1. Since the signal lead 4 is opposite to the position of the light shielding matrix 7, the arrangement of the signal leads 4 does not affect the pixel aperture ratio, and the display effect is better.
  • the pressure sensitive material layer 31 and the transparent detecting electrode layer 32 are respectively in a block shape, and the signal lead 4 is opposite to the light shielding matrix 7 of the color filter substrate 100.
  • the transmittance of the pressure sensitive material layer 31 is high, this structural design can be employed.
  • the shape of the pressure sensitive material layer 31 and the transparent detecting electrode layer 32 is not limited, and may be a square shape as illustrated, or may be a patterned shape such as a circle, a triangle, a polygon or the like.
  • the orthographic projection of the contour edge of the transparent detecting electrode layer 32 on the plane of the pressure sensitive material layer 31 falls within the contour edge of the pressure sensitive material layer 31.
  • the transparent detecting electrode layer 32 and the transparent back electrode layer 2 can be sufficiently isolated to ensure a potential difference between the transparent detecting electrode layer 32 and the transparent back electrode layer 2, thereby ensuring circuit reliability.
  • the transparent substrate 1 is a transparent substrate of the color filter substrate 100
  • the piezoelectric detecting unit 3 is in the form of a mesh, the signal lead 4 and the entity of the piezoelectric detecting unit 3.
  • the projection of the structure on the transparent substrate 1 is located in the light-shielding region of the light-shielding matrix 7 within the projection of the transparent substrate 1. That is, the pressure sensitive material layer 31 and the transparent detecting electrode layer 32 are both in the form of a mesh and a solid structure is laminated, wherein the solid structure is relative to the hollowed out area. When the transmittance of the pressure sensitive material layer 31 is low, this structural design can be employed. Since the physical structures of the signal lead 4 and the piezoelectric detecting unit 3 are both opposite to the position of the light shielding matrix 7 of the color filter substrate 100, the pixel aperture ratio is not affected, and a good display effect can be achieved.
  • At least one embodiment of the present disclosure further provides a touch display screen including the above touch display substrate.
  • the touch display can sense the amount of touch pressure, which can be based on the touch of the rich touch display Control interactive functions to bring users a higher level of operating experience.
  • the touch display can be applied to any product, such as a tablet, a mobile phone, a touch display platform, and the like.
  • At least one embodiment of the present disclosure further provides a method for fabricating a touch display substrate, including the following:
  • each piezoelectric detecting unit Forming a plurality of piezoelectric detecting units arranged in an array and signal leads corresponding to each piezoelectric detecting unit on a front side of the transparent back electrode layer, each piezoelectric detecting unit including a pressure sequentially disposed on a front side of the transparent back electrode layer
  • the sensitive material layer and the transparent detecting electrode layer are connected to the signal lead.
  • the fabricating method further includes forming a plurality of signal leads, each of the plurality of signal leads being connected to the corresponding transparent detecting electrode layer.
  • the manufacturing method further includes:
  • a transparent cover is attached to the front side of the planarization layer.
  • the transparent substrate is a transparent substrate of the color filter substrate, the pressure sensitive material layer and the transparent detecting electrode layer are respectively in a block shape, and the orthographic projection of the signal lead on the transparent substrate is located in the block.
  • the light-shielding region of the matrix is within the orthographic projection on the transparent substrate.
  • the transparent substrate is a transparent substrate of the color filter substrate
  • the piezoelectric detecting unit is distributed in a grid shape
  • the physical structure of the signal lead and the piezoelectric detecting unit is on the plane of the light shielding matrix.
  • the orthographic projection falls into the light-shielding area of the shading matrix.
  • the touch display substrate manufactured by the method according to the embodiment of the present disclosure is applied to a touch display screen, and the touch display screen can sense the touch pressure, and can be used for the user based on the touch interaction function of the rich touch display screen. Come to a higher level of operational experience.

Abstract

一种触控显示基板包括：透明衬底基板(1)；透明背电极层(2)，位于透明衬底基板前侧；多个压电检测单元(3)，位于透明背电极层(2)前侧并呈阵列排布，其中，每个压电检测单元(3)包括依次设置在透明背电极层(2)前侧的压敏材料层(31)和透明检测电极层(32)。该触控显示基板还包括多个信号引线(4)，各个透明检测电极层(32)与所述多个信号引线(4)中的相应的信号引线连接。还公开了一种触控显示屏以及制造该触控显示基板的方法。

Description

触控显示基板、触控显示屏及触控显示基板的制作方法 技术领域
本公开的至少一个实施例涉及一种触控显示基板、触控显示屏及触控显示基板的制作方法。
背景技术
随着显示技术的飞速发展，触控显示屏已经逐渐遍及人们的生活中。目前，触控显示屏按照工作原理可以分为：电阻式、电容式、红外线式、表面声波式、电磁式、振波感应式、受抑全内反射光学感应式等。在这些触控显示屏中，电容式触控显示屏以其独特的触控原理，凭借高灵敏度、长寿命、高透光率等优点，受到广泛关注。
互电容式触控显示屏包括相互交叉且绝缘设置的一组驱动电极线和一组探测电极线，驱动电极线和探测电极线分别通过电极走线与柔性印刷线路板导电连接。其操作原理为：当手指触摸屏幕时，会改变驱动电极线与探测电极线之间的互电容，对X向驱动电极线进行逐根扫描，在扫描每条驱动电极线时，均读取每条Y向探测电极线的信号，通过一轮的扫描，就可以把各个驱动电极线和探测电极线的交点都扫描到，从中确定互电容发生变化的交点，从而可以确定出触摸点坐标，然后基于该触摸点坐标实现触控显示。
目前，大多触控显示屏无法感知触摸压力的大小，这使得产品的触控交互功能受限，无法为用户带来更高层次的操作体验。
发明内容
本公开的至少一个实施例提供了一种触控显示基板，包括：
透明衬底基板；
位于透明衬底基板前侧的透明背电极层；
位于透明背电极层前侧的呈阵列排布的多个压电检测单元以及每个压电检测单元对应的信号引线，每个压电检测单元包括在透明背电极层前侧依次设置的压敏材料层和透明检测电极层，所述透明检测电极层与信号引线连接。
本公开的至少一个实施例提供一种触控显示屏，包括上述触控显示基板。
本公开的至少一个实施例还提供一种触控显示基板的制作方法，包括：
在透明衬底基板的前侧形成透明背电极层；
在透明背电极层的前侧形成呈阵列排布的多个压电检测单元以及每个压电检测单元对应的信号引线，每个压电检测单元包括在透明背电极层前侧依次设置的压敏材料层和透明检测电极层，所述透明检测电极层与信号引线连接。
附图说明
为了更清楚地说明本公开实施例的技术方案，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公开的一些实施例，而非对本公开的限制。
图1为根据本公开第一实施例的触控显示基板的触控结构示意图；
图2为根据本公开第二实施例的触控显示基板的俯视结构示意图；
图3为根据本公开第二实施例的触控显示基板的截面结构示意图；
图4为根据本公开第三实施例的触控显示基板的俯视结构示意图；
图5为根据本公开第三实施例的触控显示基板的截面结构示意图；
图6为压电检测单元检测原理示意图；以及
图7为根据本发明公开实施例的触控显示基板的制作方法流程示意图。
附图标记：
1-透明衬底基板；2-透明背电极层；3-压电检测单元；4-信号引线；
5-平坦化层；6-透明盖板；7-遮光矩阵；31-压敏材料层；
32-透明检测电极层；51-绝缘层；52-透明光学胶；100-彩膜基板。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开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公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，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，都属于本公开保护的范围。
为了丰富触控显示屏的触控交互功能，为用户带来更高层次的操作体验，本公开的实施例提供了一种触控显示基板、包含该触控显示面板的触控显示屏以及该触控显示基板的制作方法。
如图1所示，本公开的至少一个实施例提供了一种触控显示基板，包括：
透明衬底基板1；
位于透明衬底基板1前侧的透明背电极层2；
位于透明背电极层2前侧的呈阵列排布的多个压电检测单元3以及与每个压电检测单元3相应的信号引线4，每个压电检测单元3包括依次设置在透明背电极层2上方的压敏材料层31和透明检测电极层32，各个透明检测电极层32与相应的信号引线4连接。
此外，该触控显示基板还包括位于多个压电检测单元3上方的平坦化层5，以及位于平坦化层5上方的透明盖板6。
在本公开的实施例中，术语“前侧”可以理解为触控显示屏在使用时，该部件靠近使用者的一侧，相应的，部件远离使用者的一侧则可理解为“背侧”。
采用图1所示实施例的结构设计，当按压透明盖板6时，压敏材料层31受压产生极化电荷，透明检测电极层32的电位发生变化，进而透明检测电极层32与透明背电极层2之间的电位差改变，因此，可以通过获取透明检测电极层32的电位计算出按压压力(压电检测单元的检测原理如图6所示)。基于此原理可以开发具有压力检测功能的触控显示屏，丰富触控显示屏的触控交互功能，并为用户带来更高层次的操作体验。
例如，用户可以通过用手指或触控笔对触控显示屏的屏幕施加不同压力，以实现变速滚动、图片的缩放与平移、功能的预览与选择、连续可变的游戏控制、解锁某项功能与唤醒某项功能、打开上下文菜单、绘图时画笔粗细的选择、图像编辑、大写锁定与符号选择等操作。
在本公开的实施例中，透明衬底基板1为显示模组的前侧基板的衬底基板，例如，如图3所示，可以为液晶显示模组的彩膜基板100的透明衬底基板1。透明背电极层2设置在透明衬底基板1的前侧，可以连接至固定电位，例如，透明背电极层2连接至地，这样，透明检测电极层32的电位即为按压产生的电位，可以使得检测计算更加简便、直接。
在本公开的一个实施例中，透明背电极层2、透明检测电极层32可以采用氧化铟锡ITO、氧化锌ZnO等透明导电材质。压敏材料层31的材质不限，可以采用高分子压敏材料、金属与高分子复合的压敏材料，或者氧化物压敏材料，等等。平坦化层5的结构不限，如图3和图5所示，平坦化层5包括位于多个压电检测单元3前侧的绝缘层51和位于绝缘层51前侧的透明光学胶层52。
如图2和图3所示，该实施例中，透明衬底基板1为彩膜基板100的透明衬底基板，触控显示基板还包括位于透明衬底基板1背侧的遮光矩阵7，信号引线4在透明衬底基板1上的投影落入遮光矩阵7的遮光区域在透明衬底基板1上的投影内。由于信号引线4与遮光矩阵7位置相对，因此，信号引线4的排布不影响像素开口率，显示效果较佳。
该实施例中，压敏材料层31和透明检测电极层32分别呈块状，信号引线4与彩膜基板100的遮光矩阵7位置相对。当压敏材料层31的透过率较高时，可以采用此结构设计。值得一提的是，压敏材料层31和透明检测电极层32的形状不限，可以是图示的方形，也可以是圆形、三角形、多边形等等图案化的形状。
进一步，透明检测电极层32的轮廓边缘在压敏材料层31所在平面上的正投影落入压敏材料层31的轮廓边缘内。这样可以将透明检测电极层32与透明背电极层2之间充分隔离，保证透明检测电极层32与透明背电极层2之间的电位差，从而保证电路可靠性。
如图4和图5所示，该实施例中，透明衬底基板1为彩膜基板100的透明衬底基板，压电检测单元3呈网状，信号引线4以及压电检测单元3的实体结构在透明衬底基板1的投影位于遮光矩阵7的遮光区域在透明衬底基板1的投影内。即压敏材料层31和透明检测电极层32均呈网状并且实体结构层叠设置，其中，实体结构是相对镂空区域而言的。当压敏材料层31的透过率较低时，可以采用此结构设计。由于信号引线4和压电检测单元3的实体结构均与彩膜基板100的遮光矩阵7位置相对，因此，不会影响到像素开口率，可以实现良好的显示效果。
本公开的至少一个实施例还提供一种触控显示屏，包括上述触控显示基板。触控显示屏可以感知触摸压力的大小，可以基于此丰富触控显示屏的触 控交互功能，为用户带来更高层次的操作体验。触控显示屏可以应用于的产品不限，例如平板电脑、手机、触控展示平台，等等。
如图7所示，本公开的至少一个实施例还提供一种触控显示基板的制作方法，包括以下：
在透明衬底基板的前侧形成透明背电极层；以及
在透明背电极层的前侧形成呈阵列排布的多个压电检测单元以及每个压电检测单元对应的信号引线，每个压电检测单元包括依次设置在透明背电极层前侧的压敏材料层和透明检测电极层，透明检测电极层与信号引线连接。
根据本公开的一个实施例中，该制作方法还包括形成多个信号引线，多个信号引线中的各个信号引线与相应的透明检测电极层连接。
此外，在本公开的一个实施例中，该制作方法还进一步包括：
在多个压电检测单元的前侧形成平坦化层；以及
在平坦化层的前侧贴附透明盖板。
在本公开的一个实施例中，透明衬底基板为彩膜基板的透明衬底基板，压敏材料层和透明检测电极层分别呈块状，信号引线在透明衬底基板上的正投影位于遮光矩阵的遮光区域在透明衬底基板上的正投影内。
在本公开的一个实施例中，透明衬底基板为彩膜基板的透明衬底基板，压电检测单元呈网格状分布，信号引线以及压电检测单元的物理结构在遮光矩阵所在平面上的正投影落入遮光矩阵的遮光区域内。
将采用根据本公开实施例的方法制作的触控显示基板应用于触控显示屏，触控显示屏可以感知触摸压力的大小，可以基于此丰富触控显示屏的触控交互功能，为用户带来更高层次的操作体验。
以上所述仅是本公开的示范性实施方式，而非用于限制本公开的保护范围，本公开的保护范围由所附的权利要求确定。
本申请要求于2016年2月25日递交的中国专利申请No.201610105230.3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 (16)

  1. 一种触控显示基板，其包括：
    透明衬底基板；
    透明背电极层，位于透明衬底基板前侧；
    多个压电检测单元，位于透明背电极层前侧并呈阵列排布；
    其中，每个压电检测单元包括依次设置在透明背电极层前侧的压敏材料层和透明检测电极层。
  2. 如权利要求1所述的触控显示基板，其还包括多个信号引线，各个透明检测电极层与其在所述多个信号引线中的相应的信号引线连接。
  3. 如权利要求2所述的触控显示基板，其还包括位于透明衬底基板背侧的遮光矩阵，所述信号引线在所述透明衬底基板上的正投影位于所述遮光矩阵的遮光区域在所述透明衬底基板上的正投影内。
  4. 如权利要求1至3中任何一项所述的触控显示基板，其中，所述压敏材料层和透明检测电极层分别呈块状。
  5. 如权利要求1至4中任何一项所述的触控显示基板，其中，所述透明检测电极层的轮廓边缘在所述透明衬底基板上的正投影位于所述压敏材料层的轮廓边缘在所述透明衬底基板上的正投影内。
  6. 如权利要求3所述的触控显示基板，其中，所述压电检测单元呈网格状，所述压电检测单元的物理结构在所述透明衬底基板上的正投影位于所述遮光矩阵的遮光区域在所述衬底基板上的正投影内。
  7. 如权利要求1至6所述的触控显示基板，其中，所述透明背电极层接地设置。
  8. 如权利要求1至7中任何一项所述的触控显示基板，其还包括：平坦化层，位于所述多个压电检测单元前侧。
  9. 如权利要求8中所述的触控显示基板，其还包括透明盖板，位于所述平坦化层前侧。
  10. 如权利要求8或9中所述的触控显示基板，其中，所述平坦化层包括位于所述多个压电检测单元前侧的绝缘层和位于所述绝缘层前侧的透明光学胶层。
  11. 一种触控显示屏，包括如权利要求1至10中任何一项所述的触控显示基板。
  12. 一种触控显示基板的制作方法，其包括：
    在透明衬底基板的前侧形成透明背电极层；
    在透明背电极层的前侧形成呈阵列排布的多个压电检测单元，每个压电检测单元包括在透明背电极层前侧依次设置的压敏材料层和透明检测电极层。
  13. 如权利要求12所述的制作方法，其还包括形成多个信号引线，多个信号引线中的各个信号引线与其相应的透明检测电极层连接。
  14. 如权利要求12或13所述的制作方法，其还包括：
    在所述多个压电检测单元的前侧形成平坦化层；以及
    在所述平坦化层的前侧贴附透明盖板。
  15. 如权利要求13或14所述的制作方法，其中，
    所述透明衬底基板为彩膜基板的透明衬底基板，其背侧形成有遮光矩阵，所述压敏材料层和透明检测电极层分别呈块状，所述信号引线在所述透明衬底基板上的正投影位于所述遮光矩阵的遮光区域在所述透明衬底基板上的正投影内。
  16. 如权利要求13或14所述的制作方法，其中，
    所述透明衬底基板为彩膜基板的透明衬底基板，其背侧形成有遮光矩阵，所述压电检测单元呈网格状，所述信号引线以及所述压电检测单元的物理结构在所述透明衬底基板上的正投影位于所述遮光矩阵的遮光区域在所述透明衬底基板上的正投影内。
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