WO2017045382A1 - 触摸屏及其压力触控检测方法 - Google Patents

触摸屏及其压力触控检测方法 Download PDF

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Publication number
WO2017045382A1
WO2017045382A1 PCT/CN2016/076056 CN2016076056W WO2017045382A1 WO 2017045382 A1 WO2017045382 A1 WO 2017045382A1 CN 2016076056 W CN2016076056 W CN 2016076056W WO 2017045382 A1 WO2017045382 A1 WO 2017045382A1
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Prior art keywords
electrode
touch
touch screen
pressure
display area
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English (en)
French (fr)
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王雪飞
赵家阳
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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Priority to US15/504,810 priority Critical patent/US10025411B2/en
Publication of WO2017045382A1 publication Critical patent/WO2017045382A1/zh
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    • 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
    • G06F3/0447—Position sensing using the local deformation of sensor cells
    • 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
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • 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
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04104—Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
    • 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
    • G06F2203/04105—Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
    • 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
    • G06F2203/04106—Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
    • 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
    • G06F2203/04107—Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds

Definitions

  • the present invention belongs to the field of display technologies, and in particular, to a touch screen and a pressure touch detection method thereof.
  • the touch screen has become the main human-computer interaction means for personal mobile communication devices and integrated information terminals, such as tablet computers, smart phones, and super-notebook computers, due to its advantages of ease of operation, intuitiveness, and flexibility.
  • the touch screen can be divided into four main types: resistive touch screen, capacitive touch screen, infrared touch screen and surface wave (SAW) touch screen.
  • resistive touch screen capacitive touch screen
  • capacitive touch screen has multi-touch function, fast response time, long service life and high transmittance, and the user experience is superior.
  • the yield rate is significantly improved, and the price of the capacitive screen is decreasing.
  • it has become the main technology for touch interaction of small and medium size information terminals.
  • Capacitive touch screens have the disadvantage of being susceptible to environmental interference. It is difficult to accurately capture the touch behavior that occurs when using gloves and fingers with water touch or when it is used outdoors in rain or snow. At the same time, the capacitive touch screen has a problem that the touch is mishandled when the finger is suspended above the touch screen due to high sensitivity. In addition, the capacitive touch screen only senses the touch position of the plane (X, Y-axis two-dimensional space) where the screen is located, and it is difficult to support the touch parameter perception perpendicular to the screen plane (Z-axis).
  • the technical problem to be solved by the present invention includes providing a touch screen for realizing three-dimensional multi-point touch and a pressure touch detecting method thereof for the above problems existing in the existing touch screen.
  • the technical solution for solving the technical problem of the present invention is a touch screen, comprising a display module and a touch module on a light emitting surface side of the display module, the touch module package a plurality of sensing electrodes and a plurality of touch electrodes disposed above the display module; wherein the plurality of sensing electrodes and the plurality of touch electrodes are respectively disposed in different layers and insulated from each other, and the touch screen has a display And a non-display area surrounding the display area, wherein the non-display area is provided with at least one pressure sensor; wherein
  • the pressure sensor includes a first electrode and a second electrode, the first electrode is disposed in the same layer as the sensing electrode, the second electrode is disposed in the same layer as the touch electrode, and the pressure sensor is configured according to the first electrode The change in distance from the second electrode detects the touch pressure.
  • the first electrode, the second electrode, the touch electrode and the sensing electrode are connected to the same touch chip through respective connecting lines.
  • an electrostatic shielding line is further disposed in the non-display area of the touch screen; the connecting line connected to the sensing electrode and the touch electrode is located at a position of the electrostatic shielding line adjacent to the display area. a side; the connecting line connected to the first electrode and the second electrode is located on a side of the electrostatic shielding line facing away from the display area.
  • the materials of the first electrode, the second electrode, the touch electrode, and the sensing electrode are all the same.
  • the materials of the first electrode, the second electrode, the touch electrode, and the sensing electrode are all indium tin oxide.
  • the layer where the first electrode is located and the layer where the second electrode is located are insulated and fixed to each other by a colloid.
  • colloid is an optical glue.
  • the touch screen further includes a frame, and the frame encapsulates a side of the display module facing away from the light emitting surface.
  • the touch screen is applied to any one of a mobile phone, a pad, and a notebook computer.
  • a technical solution for solving the technical problem of the present invention is a pressure touch detection method for a touch screen, which is used in the touch screen according to any one of the above aspects; Detection methods include:
  • the pressure used for the touch is detected according to the change in the distance between the first electrode and the second electrode.
  • the detecting the pressure used for the touch according to the change of the distance between the first electrode and the second electrode comprises:
  • the change in capacitance is determined, and the pressure data is calculated based on the change in the capacitance to determine the pressure used for the touch.
  • the insulating layer is disposed between the layer where the first electrode is located and the layer where the second electrode is located, that is, the dielectric layer is disposed, when the pressure acts on the second electrode, the dielectric layer is compressed, the first electrode and the first electrode The distance between the two electrodes is reduced.
  • FIG. 1 is a schematic structural diagram of a touch panel according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic diagram of a first electrode and a sensing electrode in a touch screen according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic diagram of a second electrode and a touch electrode in the touch screen according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic view showing the wiring of an electrostatic shield line and an electrode connection line in the touch panel of the first embodiment of the invention.
  • the reference numerals are: 1, display module; 11, backlight; 12, display panel; 2, touch module; 21, sensing electrode; 22, touch electrode; 3, pressure sensor; 32, the second electrode; 4, colloid; 5, protective glass; 6, frame; 7, electrostatic shielding line.
  • the touch panel includes a display module 1 and a touch module 2 on a light emitting surface side of the display module 1 .
  • the display module 1 includes a display panel 12 and a backlight 11 .
  • the touch module 2 includes a plurality of sensing electrodes 21 and a plurality of touch electrodes 22 disposed above the display module 1; wherein the plurality of sensing electrodes 21 and the plurality of touch electrodes 22 are respectively disposed in different layers. And insulated from each other; the touch screen has a display area and a non-display area surrounding the display area (AA area), and the non-display area is provided with at least one pressure sensor 3; the first electrode 31 and the second electrode are included 32.
  • the first electrode 31 of the pressure sensor 3 is disposed in the same layer as the sensing electrode 21, and the second electrode 32 is disposed in the same layer as the touch electrode 22.
  • the pressure sensor 3 is configured according to the first electrode 31. The change in the distance between the second electrodes 32 detects the touch pressure.
  • the touch screen of the embodiment has a traditional multi-point capacitive touch screen body in the display area, the capacitive touch screen body is a body that directly interacts with the user, and the outer surface (light-emitting surface) is an anti-friction protective glass 5 (Cover Glass). 5 is attached to the light-emitting surface side of the touch module 2 through the colloid 4, and a plurality of sensing electrodes 21 and a plurality of touch electrodes made of a transparent conductive material are respectively disposed through the X-axis and the Y-axis of the plane of the touch module 2 22. An alternating capacitance matrix is formed to detect a change in capacitance caused by a human touch.
  • the pressure sensor 3 is disposed in the non-display area of the touch screen of the embodiment, and the first electrode 31 is disposed in the same layer as the sensing electrode 21, and the second electrode 32 is disposed in the same layer as the touch electrode 22. It is used to detect the touch pressure according to the change in the distance between the first electrode 31 and the second electrode 32. Specifically, since the insulating layer is disposed between the layer where the first electrode 31 is located and the layer where the second electrode 32 is located, that is, the dielectric layer is disposed, when the pressure acts on the second electrode 32, the dielectric layer is compressed, first.
  • the first electrode 31, the second electrode 32, the touch electrode 22, and the sensing electrode 21 are connected to the same touch chip through respective connecting lines, thereby implementing the touch module 2 and the pressure sensor 3. Integration to make the touch screen more integrated and reduce costs.
  • the non-display area of the touch screen is further provided with an electrostatic shielding line 7;
  • the connecting line connected to the sensing electrode 21 and the touch electrode 22 is located at the electrostatic shielding line 7 a side adjacent to the display area;
  • the connection line connected to the first electrode 31 and the second electrode 32 is located on a side of the electrostatic shield line 7 facing away from the display area. Therefore, the electrostatic shielding wire 7 is disposed between the connection line of the touch electrode 22 and the sensing electrode 21 and the connection line between the first electrode 31 and the second electrode 32. Therefore, signal interference can be effectively avoided.
  • the performance of the touch screen is better.
  • the materials of the first electrode 31, the second electrode 32, the touch electrode 22, and the sensing electrode 21 are all the same, that is, the first electrode 31 and the sensing electrode 21 are not only in the same layer but also the material.
  • the second electrode 32 and the touch electrode 22 are not only in the same layer but of the same material, so that the pattern of the first electrode 31 and the sensing electrode 21 can be formed by one patterning process, and the second electrode 32 and the touch electrode 22 are formed by one patterning process. Graphics to simplify process steps and save on production costs.
  • the materials of the first electrode 31, the second electrode 32, the touch electrode 22, and the sensing electrode 21 are all indium tin oxide (InGaSnO).
  • indium gallium zinc oxide (IGZO) or indium zinc oxide (IZO) may also be used.
  • Indium tin oxide (InSnO) nano silver, graphene, carbon nanotubes, and other transparent conductive materials.
  • the layer where the first electrode 31 is located and the layer where the second electrode 32 is located are insulated and fixed to each other by the colloid 4.
  • the reason why the layer of the first electrode 31 and the layer of the second electrode 32 are insulated by the colloid 4 is because the texture of the colloid 4 is relatively soft and has certain elasticity. When touch occurs, It is easy to detect the position where the touch occurs, that is, to increase the sensitivity of the touch screen.
  • the colloid 4 is preferably an optical adhesive (OCA adhesive). Of course, it is not limited to the colloid 4, and an elastic insulating material or a colloid 4 having good elasticity may be used.
  • a pressure sensor 3 is disposed at four corner positions of the touch screen, that is, the touch screen includes four pressure sensors. Specifically, when a user wants to enlarge a picture on the touch screen, the user clicks on the picture by a finger or the like, and the four pressure sensors will be under pressure, but since the relative positions of the four pressure sensors 3 and the touch points are not necessarily the same, The pressure on the four pressure sensors 3 is different, so it is necessary to integrate the pressures of the four pressure sensors 3 to obtain a value to enlarge the picture. The greater the pressure, the larger the magnification of the picture.
  • the number of the pressure sensors 3 in this embodiment may be specifically set as needed, and is not limited to four, or is disposed at a corner position, and is not described in detail herein.
  • the touch screen of the embodiment further includes a frame 6 disposed outside the display module 1 for enclosing the side of the display module 1 facing away from the light emitting surface to protect the touch screen.
  • the touch screen of this embodiment is applicable to a small-sized touch display device, and may be any one of a mobile phone, a pad, and a notebook computer, or may be another display product.
  • the colloid 4 between the display module 1 and the touch module and between the touch module 2 and the cover glass 5 is usually made of optical glue (OCA glue). ).
  • the embodiment provides a pressure touch detection method for a touch screen.
  • the touch screen can be the touch screen of the first embodiment.
  • the pressure touch detection method includes:
  • the pressure used for the touch is detected according to the change in the distance between the first electrode 31 and the second electrode 32.
  • the change in capacitance is calculated, and the pressure data is calculated according to the change in the capacitance, Determine the pressure used for touch.

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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

一种触摸屏及其压力触控检测方法，属于显示技术领域。触摸屏，包括显示模组（1）和位于显示模组（1）出光面侧的触控模组（2），所述触控模组（2）包括依次设置在显示模组（1）上方的多条感应电极（21）和多条触控电极（22）；其中，多条所述感应电极（21）和多条触控电极（22）分别设置在不同的层中并且彼此绝缘，所述触摸屏具有显示区和环绕所述显示区的非显示区，在所述非显示区设置有至少一个压力传感器（3）；其中，所述压力传感器（3）包括第一电极（31）和第二电极（32），所述第一电极（31）与所述感应电极（21）同层设置，所述第二电极（32）与所述触控电极（22）同层设置，所述压力传感器（3）根据第一电极（31）与第二电极（32）之间的距离变化检测触控压力。该触摸屏适用于小尺寸的触控显示装置中。

Description

触摸屏及其压力触控检测方法 技术领域
本发明属于显示技术领域，具体涉及一种触摸屏及其压力触控检测方法。
背景技术
触摸屏因具有易操作性、直观性和灵活性等优点，已成为个人移动通信设备和综合信息终端，如平板电脑、智能手机，以及超级笔记本电脑的主要人机交互手段。触摸屏根据不同的触控原理可分为电阻触摸屏、电容触摸屏、红外触摸屏和表面波(SAW)触摸屏等四种主要类型。其中，电容触摸屏具有多点触控的功能，反应时间快，使用寿命长和透过率较高，用户使用体验优越，同时随着工艺的逐步成熟，良品率得到显著提高，电容屏价格日益降低，目前已成为中小尺寸信息终端触控交互的主要技术。
电容触摸屏存在易受环境干扰的缺点，对于带着手套和手指带水触控的情况，或者在下雨、下雪等天气的室外使用时，难以准确捕获发生的触控行为。同时，电容触摸屏存在由于灵敏度较高导致手指悬空在触摸屏上方时引起触摸误操作的问题。此外，电容触摸屏仅感知屏体所在平面(X,Y轴二维空间)的触摸位置，难以支持垂直于屏体平面(Z轴)的触摸参数感知。
发明内容
本发明所要解决的技术问题包括，针对现有的触摸屏存在的上述问题，提供一种实现三维多点式触控的触摸屏及其压力触控检测方法。
解决本发明技术问题所采用的技术方案是一种触摸屏，包括显示模组和位于显示模组出光面侧的触控模组，所述触控模组包 括依次设置在显示模组上方的多条感应电极和多条触控电极；其中，多条所述感应电极和多条触控电极分别设置在不同的层中并且彼此绝缘，所述触摸屏具有显示区和环绕所述显示区的非显示区，在所述非显示区设置有至少一个压力传感器；其中，
所述压力传感器包括第一电极和第二电极，所述第一电极与所述感应电极同层设置，所述第二电极与所述触控电极同层设置，所述压力传感器根据第一电极与第二电极之间的距离变化检测触控压力。
优选的是，所述第一电极、第二电极、触控电极、感应电极均通过各自的连接线与同一触控芯片连接。
进一步优选的是，在所述触摸屏的非显示区还设置有静电屏蔽线；与所述感应电极和所述触控电极连接的所述连接线位于所述静电屏蔽线靠近所述显示区的一侧；与所述第一电极和所述第二电极连接的所述连接线位于所述静电屏蔽线背离所述显示区的一侧。
优选的是，所述第一电极、第二电极、触控电极、感应电极的材料均相同。
进一步优选的是，所述第一电极、第二电极、触控电极、感应电极的材料均为氧化铟锡。
优选的是，所述第一电极所在层与所述第二电极所在层之间通过胶体相互绝缘固定。
进一步优选的是，所述胶体为光学胶。
优选的是，在所述触摸屏的每个边角位置均有一个所述压力传感器。
优选的是，所述触摸屏还包括框架，所述框架封包所述显示模组背离出光面的一侧。
优选的是，所述触摸屏应用于手机、Pad、笔记本电脑中的任意一种中。
解决本发明技术问题所采用的技术方案是一种触摸屏的压力触控检测方法，用于上述中任一项所述的触摸屏；所述压力触控 检测方法包括：
根据第一电极与第二电极之间的距离变化，检测触控所用的压力。
优选的是，所述根据第一电极与第二电极之间的距离变化，检测触控所用的压力包括：
通过检测第一电极和第二电极之间的距离变化，判断出电容的变化，并根据电容的变化计算出压力数据，以判断触控所用的压力。
本发明具有如下有益效果：
由于在本发明的第一电极所在层与第二电极所在层之间夹设有绝缘层，即设置电介质层，当有压力作用在第二电极上时，电介质层发生压缩，第一电极和第二电极之间的距离缩小，根据平板电容公式C＝(ε·S)/d，电极的距离变小，电容增大。也就是本实施例中实质上通过测量两电极之间的电容，来检测压力的大小，进而实现在垂直于屏体方向，即Z轴方向的触控。
附图说明
图1为现有的本发明实施例1的触摸屏的结构示意图；
图2为本发明的实施例1的触摸屏中第一电极和感应电极的示意图；
图3为本发明的实施例1的触摸屏中第二电极和触控电极的示意图；
图4为发明的实施例1的触摸屏中静电屏蔽线与电极连接线的布线示意图。
其中附图标记为：1、显示模组；11、背光源；12、显示面板；2、触控模组；21、感应电极；22、触控电极；3、压力传感器；31、第一电极；32、第二电极；4、胶体；5、保护玻璃；6、框架；7、静电屏蔽线。
具体实施方式
为使本领域技术人员更好地理解本发明的技术方案，下面结合附图和具体实施方式对本发明作进一步详细描述。
实施例1：
如图1所示，本实施例提供一种触摸屏，包括显示模组1和位于显示模组1出光面侧的触控模组2，显示模组1包括显示面板12和背光源11，所述触控模组2包括依次设置在显示模组1上方的多条感应电极21和多条触控电极22；其中，多条所述感应电极21和多条触控电极22分别设置在不同的层中并且彼此绝缘；所述触摸屏具有显示区和环绕所述显示区(AA区)的非显示区，在所述非显示区设置有至少一个压力传感器3；其包括第一电极31和第二电极32，其中，所述压力传感器3的第一电极31与所述感应电极21同层设置，第二电极32与所述触控电极22同层设置，所述压力传感器3根据第一电极31与第二电极32之间的距离变化检测触控压力。
本实施例的触摸屏在显示区具有传统的多点式电容触摸屏体，该电容触摸屏体是与用户直接交互的实体，外表面(出光面)为抗磨擦的保护玻璃5(Cover Glass)，该玻璃5通过胶体4贴合在触控模组2的出光面侧，通过触控模组2平面的X轴和Y轴分别设置由透明导电材料制成的多条感应电极21和多条触控电极22，形成交互电容矩阵，实现对人体触摸引起的电容变化进行检测。特别的，在本实施例的触摸屏的非显示区还设置了压力传感器3，其第一电极31与所述感应电极21同层设置，第二电极32与所述触控电极22同层设置，用于根据第一电极31与第二电极32之间的距离变化，检测触控压力。具体的，由于在第一电极31所在层与第二电极32所在层之间夹设有绝缘层，即设置电介质层，当有压力作用在第二电极32上时，电介质层发生压缩，第一电极31和第二电极32之间的距离缩小，根据平板电容公式C＝(ε·S)/d， 电极的距离变小，电容增大。也就是本实施例中实质上通过测量两电极之间的电容，来检测压力的大小，进而实现在垂直于屏体方向，即Z轴方向的触控。由此可知，本实施例中触摸屏三维(X、Y、Z轴)多点式触摸功能。
优选的，在实施例中，第一电极31、第二电极32、触控电极22、感应电极21均通过各自的连接线与同一触控芯片连接，从而实现触控模组2与压力传感器3的集成，以使触摸屏的集成度更高，降低成本。
进一步的，如图4所示，所述触摸屏的非显示区还设置有静电屏蔽线7；与所述感应电极21和所述触控电极22连接的所述连接线位于所述静电屏蔽线7靠近所述显示区的一侧；与所述第一电极31和所述第二电极32连接的所述连接线位于所述静电屏蔽线7背离所述显示区的一侧。由此可见，静电屏蔽线7设置触控电极22和感应电极21的连接线与第一电极31和所述第二电极32的连接线之间，因此，可以有效的避免信号的干扰，以使触摸屏的性能更优。
结合图2和3所示，优选的，第一电极31、第二电极32、触控电极22、感应电极21的材料均相同，也就是说第一电极31与感应电极21不仅同层且材料相同，第二电极32与触控电极22不仅同层且材料相同，故可以采用一次构图工艺形成第一电极31与感应电极21的图形，采用一次构图工艺形成第二电极32和触控电极22的图形，从而简化工艺步骤，节约生产成本。
进一步的，第一电极31、第二电极32、触控电极22、感应电极21的材料均采用氧化铟锡(InGaSnO)，当然也可以采用氧化铟镓锌(IGZO)、氧化铟锌(IZO)、氧化铟锡(InSnO)、纳米银、石墨烯、碳纳米管、等透明导电材料。
优选的是，在本实施例中，第一电极31所在层与所述第二电极32所在层之间通过胶体4相互绝缘固定。之所以采用胶体4使第一电极31所在层与所述第二电极32所在层绝缘设置是因为，胶体4的质地相对较为柔软，具有一定的弹性，当发生触控时， 易于检测到发生触控的位置，即提高触摸屏的灵敏度。该胶体4优选为光学胶(OCA胶)，当然也不局限于该种胶体4，也可以采用具有弹性的绝缘材料或者弹性较好的胶体4。
作为本实施例的一种优选实施方式，如图2-4所示，在触摸屏的四个边角位置均设置有一个压力传感器3，即该触摸屏包括四个压力传感器。具体的，当想对触摸屏上的一个图片进行放大时，用户通过手指等点击图片，四个压力传感器将会受到压力，但是由于四个压力传感器3与触控点的相对位置不一定相同，故对四个压力传感器3的压力也就不同，因此需要对四个压力传感器3所受到的压力进行整合来得到一个数值，以对图片进行放大，压力越大，则图片的放大比例越大。
当然本实施例中的压力传感器3的个数可以根据需要具体设置，并不局限于四个，或者是设置在边角的位置，在此不详细描述。
优选的，本实施例的触摸屏还包括框架6，所述框架6设置在所述显示模组1外侧，用于封包所述显示模组1背离出光面的一侧，以对触摸屏进行保护。
本实施例的触摸屏适用于小尺寸的触摸显示装置，其可以是手机、Pad、笔记本电脑中的任意一种，也可以是其他的显示产品。
在此需要说明的是，本领领域技术人员公知显示模组1与触摸模组之间，以及触控模组2与保护玻璃5(Cover Glass)之间的胶体4也通常采用光学胶(OCA胶)。
实施例2：
本实施例提供一种触摸屏的压力触控检测方法，该触摸屏可以为实施例1中触摸屏，所述压力触控检测方法包括：
根据第一电极31与第二电极32之间的距离变化，检测触控所用的压力。
具体的，通过检测第一电极31和第二电极32之间的距离变化，计算出电容的变化，并根据电容的变化计算出压力数据，以 判断触控所用的压力。
由于在第一电极31所在层与第二电极32所在层之间夹设有绝缘层，即设置电介质层，当有压力作用在第二电极32上时，电介质层发生压缩，第一电极31和第二电极32之间的距离缩小，根据平板电容公式C＝(ε·S)/d，电极之间的距离变小，电容增大。也就是本实施例中实质上通过测量两电极之间的电容，来检测压力的大小。
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。

Claims (12)

  1. 一种触摸屏，包括显示模组和位于显示模组出光面侧的触控模组，所述触控模组包括依次设置在显示模组上方的多条感应电极和多条触控电极；其中，所述多条感应电极和所述多条触控电极分别设置在不同的层中并且彼此绝缘，其特征在于，所述触摸屏具有显示区和环绕所述显示区的非显示区，在所述非显示区设置有至少一个压力传感器；其中，
    所述压力传感器包括第一电极和第二电极，所述第一电极与所述感应电极同层设置，所述第二电极与所述触控电极同层设置，所述压力传感器根据第一电极与第二电极之间的距离变化检测触控压力。
  2. 根据权利要求1所述的触摸屏，其特征在于，所述第一电极、第二电极、触控电极、感应电极均通过各自的连接线与同一触控芯片连接。
  3. 根据权利要求2所述的触摸屏，其特征在于，在所述触摸屏的非显示区还设置有静电屏蔽线；与所述感应电极和所述触控电极连接的所述连接线位于所述静电屏蔽线靠近所述显示区的一侧；与所述第一电极和所述第二电极连接的所述连接线位于所述静电屏蔽线背离所述显示区的一侧。
  4. 根据权利要求1所述的触摸屏，其特征在于，所述第一电极、第二电极、触控电极、感应电极的材料均相同。
  5. 根据权利要求4所述的触摸屏，其特征在于，所述第一电极、第二电极、触控电极、感应电极的材料均为氧化铟锡。
  6. 根据权利要求1所述的触摸屏，其特征在于，所述第一电 极所在层与所述第二电极所在层之间通过胶体相互绝缘固定。
  7. 根据权利要求6所述的触摸屏，其特征在于，所述胶体为光学胶。
  8. 根据权利要求1所述触摸屏，其特征在于，在所述触摸屏的每个边角位置均有一个所述压力传感器。
  9. 根据权利要求1所述触摸屏，其特征在于，所述触摸屏还包括框架，所述框架封包所述显示模组背离出光面的一侧。
  10. 根据权利要求1所述的触摸屏，其特征在于，所述触摸屏应用于手机、Pad、笔记本电脑中的任意一种中。
  11. 一种触摸屏的压力触控检测方法，用于权利要求1-10中任一项所述的触摸屏；所述压力触控检测方法包括：
    根据第一电极与第二电极之间的距离变化，检测触控所用的压力。
  12. 根据权利要求11所述的触摸屏的压力触控检测方法，其特征在于，所述根据第一电极与第二电极之间的距离变化，检测触控所用的压力包括：
    通过检测第一电极和第二电极之间的距离变化，判断出电容的变化，并根据电容的变化计算出压力数据，以判断触控所用的压力。
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