WO2020118989A1 - 触控面板以及显示装置 - Google Patents

触控面板以及显示装置 Download PDF

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Publication number
WO2020118989A1
WO2020118989A1 PCT/CN2019/082603 CN2019082603W WO2020118989A1 WO 2020118989 A1 WO2020118989 A1 WO 2020118989A1 CN 2019082603 W CN2019082603 W CN 2019082603W WO 2020118989 A1 WO2020118989 A1 WO 2020118989A1
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WIPO (PCT)
Prior art keywords
electrode
branch
flexible substrate
touch panel
resistance value
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/CN2019/082603
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English (en)
French (fr)
Inventor
陈碧
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 Semiconductor Display Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to US16/347,818 priority Critical patent/US11157125B2/en
Publication of WO2020118989A1 publication Critical patent/WO2020118989A1/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
    • G06F3/044—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
    • G06F3/0448—Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality
    • 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
    • G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
    • 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
    • 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

Definitions

  • the present application relates to the field of touch technology, in particular to a touch panel and a display device.
  • terminal products such as mobile phones support functions such as touch control and pressure sensing.
  • a touch layer needs to be provided in the terminal to realize the touch function, and a pressure sensing layer is provided to realize the pressure sensing function.
  • This method requires the terminal to add an independent The pressure-sensitive layer increases the thickness of the product.
  • the existing terminal has a technical problem that an independent pressure sensing layer needs to be added to realize the pressure sensing function.
  • the present application provides a touch panel and a display device to solve the technical problem of existing terminals that need to add an independent pressure sensing layer to achieve a pressure sensing function.
  • An embodiment of the present application provides a touch panel, including:
  • a touch control chip electrically connecting the first electrode and the second electrode, and recognizing a touch operation according to a change in the capacitance of the capacitor
  • the pressure sensing chip is at least electrically connected to the first electrode, and recognizes the pressing operation according to the change of the resistance value of the first electrode.
  • the first electrode includes a first trunk and at least one first branch, the length of the first branch increases as the deformation amount of the flexible substrate increases, the The resistance value of the first branch is positively related to the length value of the first branch.
  • the first branch is a conductive loop formed by a hollow wire.
  • the first branch is gyroscopically arranged.
  • the pressure-sensing chip is also electrically connected to the second electrode, and the pressing operation is recognized according to the change in the resistance value of the first electrode and the change in the resistance value of the second electrode.
  • the two electrodes include a second trunk and at least one second branch, the length of the second branch increases as the amount of deformation of the flexible substrate increases, the resistance value of the second branch and the second branch The length value is positively correlated.
  • the projections of the first branch and the second branch on the surface of the flexible substrate do not overlap.
  • the second branch and the first branch are both conductive loops formed by hollow wires, and are arranged in a staggered spiral shape.
  • the second electrode and the first electrode are disposed in the same layer.
  • both the second electrode and the first electrode are formed by patterning a transparent conductive material layer.
  • one of the first electrode and the second electrode is a signal sensing electrode, and the other is a signal driving electrode.
  • An embodiment of the present application provides a display device, which includes a touch panel.
  • the touch panel includes:
  • a touch control chip electrically connecting the first electrode and the second electrode, and recognizing the touch operation according to the change in the capacitance value of the capacitor;
  • the pressure sensing chip is at least electrically connected to the first electrode, and recognizes the pressing operation according to the change of the resistance value of the first electrode.
  • the first electrode includes a first trunk and at least one first branch, the length of the first branch increases as the deformation amount of the flexible substrate increases, the first The resistance value of a branch is positively related to the length value of the first branch.
  • the first branch is a conductive loop formed by a hollow wire.
  • the first branch is gyroscopically arranged.
  • the pressure sensing chip is also electrically connected to the second electrode, and the pressing operation is recognized according to the change in the resistance value of the first electrode and the change in the resistance value of the second electrode, the second The electrode includes a second trunk and at least one second branch, the length of the second branch increases as the amount of deformation of the flexible substrate increases, the resistance value of the second branch is different from that of the second branch The length value is positively correlated.
  • the projections of the first branch and the second branch on the surface of the flexible substrate do not overlap.
  • the second branch and the first branch are both conductive loops formed by hollow conductors, and are arranged in a staggered spiral shape.
  • the second electrode is provided in the same layer as the first electrode.
  • both the second electrode and the first electrode are patterned by a transparent conductive layer.
  • one of the first electrode and the second electrode is a signal sensing electrode, and the other is a signal driving electrode.
  • Embodiments of the present application provide a new touch panel and a display device, which include a flexible substrate, a first electrode formed on the flexible substrate, and the shape of the first electrode follows the shape of the flexible substrate Deformation and deformation, the resistance value of the first electrode is correlated with the deformation amount of the shape of the first electrode, the second electrode formed on the flexible substrate, the second electrode and the first
  • the electrodes are insulated and form a capacitor; the touch chip is electrically connected to the first electrode and the second electrode, and the touch operation is recognized according to the change in the capacitance of the capacitor; the pressure sensor chip is at least electrically connected to the first
  • the electrode recognizes the pressing operation according to the change of the resistance value of the first electrode; in this structure, the shape of the first electrode is deformed with the deformation of the flexible substrate, and the resistance value of the first electrode is different from that of the first electrode
  • the deformation of the shape is related, so that the deformation of the flexible substrate can be determined according to the resistance of the first electrode, and the deformation of
  • FIG. 1 is a schematic structural diagram of an existing touch panel.
  • FIG. 2 is a schematic structural diagram of a touch panel provided by an embodiment of the present application.
  • FIG. 3 is a specific structural diagram of a touch panel provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a first electrode structure of a touch panel provided by an embodiment of the present application.
  • FIG. 5 is a simplified circuit schematic diagram of a first electrode of a touch panel provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a second electrode structure of a touch panel provided by an embodiment of the present application.
  • FIG. 7 is a simplified circuit schematic diagram of a second electrode of a touch panel provided by an embodiment of the present application.
  • FIG. 8 is an explanatory structural diagram of a touch panel provided by an embodiment of the present application.
  • This application addresses the technical problem that the existing terminal needs to add a pressure sensing layer to realize the pressure sensing function; this application can solve this defect.
  • the touch panel provided by this application includes:
  • the flexible substrate 21 includes a flexible substrate, a flexible display panel formed with pixel units, etc.;
  • a touch control chip (not shown in FIG. 2), electrically connecting the first electrode and the second electrode, and recognizing the touch operation according to the change in the capacitance value of the capacitor;
  • a pressure sensing chip (not shown in FIG. 2) is at least electrically connected to the first electrode, and recognizes the pressing operation according to the change in the resistance value of the first electrode.
  • the touch panel includes a flexible substrate, a first electrode formed on the flexible substrate, the shape of the first electrode deforms as the flexible substrate deforms, the first The resistance value of the electrode is correlated with the deformation amount of the shape of the first electrode, a second electrode formed on the flexible substrate, the second electrode is insulated from the first electrode, and forms a capacitance;
  • the touch chip is electrically connected to the first electrode and the second electrode, and the touch operation is recognized according to the change in the capacitance value of the capacitor;
  • the pressure sensing chip is at least electrically connected to the first electrode, based on the first electrode
  • the change in the resistance value recognizes the pressing operation; in this structure, the shape of the first electrode deforms with the deformation of the flexible substrate, and the resistance value of the first electrode is correlated with the deformation amount of the shape of the first electrode, In this way, the deformation amount of the flexible substrate can be determined according to the resistance of the first electrode, and the deformation amount of the substrate is positively related to the amount of pressure pressed by
  • the correlation relationship includes a positive correlation and a negative correlation.
  • a positive correlation means that the larger the deformation amount of the substrate 21, the greater the resistance of the first electrode 22, and a negative correlation means that the larger the deformation amount of the substrate 21 The smaller the resistance of the first electrode 22 is, the pressure sensing function can be realized by these two correlations.
  • the first electrode 22 includes a first trunk 221 and at least one first branch 222.
  • the length of the first branch 222 follows the shape of the flexible substrate 21
  • the variable increases and increases, and the resistance value of the first branch 222 is positively related to the length value of the first branch 222.
  • the first branch 222 is a conductive loop formed by a hollow wire.
  • the first branch is convoluted.
  • the first branch is arranged in a straight line, or an arc, or a combination of multiple shapes.
  • the pressure sensing chip is also electrically connected to the second electrode, and the pressing operation is recognized according to the change in the resistance value of the first electrode and the change in the resistance value of the second electrode, as shown in FIG. 2 ,
  • the second electrode 23 includes a second trunk 231 and at least one second branch 232, the length of the second branch 232 increases as the deformation amount of the flexible substrate 21 increases, the second branch The resistance value of 232 is positively related to the length value of the second branch 232.
  • the projections of the first branch 222 and the second branch 232 on the surface of the flexible substrate 21 do not overlap.
  • the projections of the first branch 222 and the second branch 232 on the surface of the flexible substrate 21 may partially overlap.
  • the second branch 232 and the first branch 222 are both conductive loops formed by hollow wires, and are arranged in a staggered spiral shape.
  • the second branch 232 and the first branch 222 are both conductive loops formed by hollow wires, but are not staggered.
  • one of the second branch 232 and the first branch 222 is a conductive loop formed by a hollow wire, and the other is provided in a planar manner.
  • the second electrode 23 and the first electrode 22 are disposed in the same layer.
  • the second electrode 23 and the first electrode 22 are disposed on two opposite surfaces of the flexible substrate.
  • the flexible substrate includes a first substrate and a second substrate, the first electrode 22 is disposed on the surface of the first substrate, and the second electrode 23 is disposed on the The surface of the second substrate.
  • At least one of the first substrate and the second substrate is a plastic film.
  • one of the first substrate and the second substrate is a plastic film, and the other is a cover plate.
  • both the second electrode and the first electrode are formed by patterning a transparent conductive layer.
  • the transparent conductive layer is a conductive glass layer, such as an ITO layer.
  • both the second electrode and the first electrode are formed by patterning a metal layer.
  • the metal layer is a copper layer or the like.
  • one of the second electrode and the first electrode is a transparent conductive layer, and the other is a metal layer.
  • one of the first electrode and the second electrode is a signal sensing electrode, and the other is a signal driving electrode.
  • This embodiment discloses a new pattern design of the touch layer, which realizes the integration of the touch function and the pressure sensing function based on the special pattern design.
  • the transparent metal conductive material is designed into two intertwined patterns, namely RX (touch sensing electrode) pattern and TX (touch driving electrode) pattern, formed between TX and RX Capacitors can realize the touch function;
  • the single touch sensing electrode pattern or touch driving electrode pattern is designed to be hollow, so as to form a conductive loop, when the external finger pressure is applied, the touch sensing electrode pattern or touch driving electrode pattern occurs Strain effect, its impedance changes, and the amount of finger pressure is detected according to the impedance change.
  • Figure 3 is a single functional sensing unit formed by TX and RX, where TX or RX are each composed of a complete pattern, TX and RX are intertwined to form a spiral, and the overlapping positions of RX and TX are separated by a transparent insulating layer,
  • the size of the function sensing unit is between 4 ⁇ 4mm and 6 ⁇ 6mm.
  • the touch driving electrode pattern is a driving unit, and driving signals are input from ports c and d, and RX is a signal receiving end, and the receiving signals are fed back through ports a and b.
  • the touch driving electrode pattern and the touch sensing electrode pattern form a mutual capacitance, when the finger When approaching, the capacitance value changes, and the finger position can be accurately detected according to the capacitance change;
  • FIG. 4 it is a schematic diagram of a single touch sensing electrode pattern, which can be divided into upper and lower parts, which are respectively indicated by dotted frames, and the upper part a port to b port are the lead area parts, and the impedance is represented by R1;
  • Half of the f-port to the e-port is a functional sensing part, which is a hollow design, and the impedance from f to e is represented by R2;
  • the entire touch sensing electrode pattern can be illustrated by the circuit diagram shown in FIG. 5, a single touch sensing electrode pattern
  • the impedance value of R (RX) satisfies:
  • R(RX) R1* R2 ⁇ (R1+R2)
  • FIG. 6 it is a schematic diagram of a single touch driving electrode pattern, which can be divided into left and right parts, which are respectively indicated by dotted boxes, and the right half of the c-port to the d-port is the lead area, and the impedance is R3 Representation; the left half of the port g port to h is the function sensing part, which is a hollow design, the impedance from g to h is represented by R4; a single touch drive electrode pattern can also be equivalent to the circuit schematic shown in Figure 7 ,
  • the impedance value of a single touch drive electrode pattern is R (TX) satisfy:
  • R(TX) R3* R4 ⁇ (R3+R4)
  • R4 represents the impedance of the functional induction coil of the touch drive electrode pattern. A strain effect occurs when part of the functional induction coil is subjected to external pressure, and its impedance R4 changes, thus causing a change in R (TX).
  • the mutual touch function part feedbacks the position of the coordinate point
  • the pressure sensing touch function part feedbacks the magnitude of the pressure. Combining the feedback signals of the two can detect the coordinates of the touch point and the magnitude of the pressure signal;
  • the impedance of the touch unit changes, the pressure sensing function is activated, and the mutual-capacitive touch enters a sleep state.
  • the magnitude of the pressure can be determined in conjunction with the change in impedance of the touch sensing electrode pattern or the touch driving electrode pattern.
  • the area formed by the 3 ⁇ 3 function sensing unit when the finger is pressed, the impedance of the port from a1 port to a2 changes, and it can be determined that the coordinate of the pressed position is Row1; at the same time, due to the e1 port to the e2 port
  • the pressing position coordinate can be determined at Col2; combining the information of the two, the pressing position coordinate can be determined to be (Row 1, Col2); combined with the impedance change amount of the touch sensing electrode pattern or the touch driving electrode pattern, it can be determined The magnitude of pressure.
  • the present application further provides a display device, which includes a display panel, a touch panel, and a cover plate.
  • the touch panel includes a substrate; a first electrode disposed on the substrate; A second electrode on the substrate, the second electrode is insulated from the first electrode, and forms a capacitive structure; wherein, the resistance of the first electrode is related to the deformation amount of the substrate; Because the resistance of the first electrode is set to have a correlation with the deformation amount of the substrate, the deformation amount of the substrate can be obtained according to the resistance of the first electrode, and the deformation amount of the substrate is positively related to the amount of pressure pressed by the user. That is, according to the resistance of the first electrode, the pressure of the user's pressing can be determined to achieve the pressure sensing function.
  • the second electrode is insulated from the first electrode and forms a capacitor structure, which can determine the user's touch operation based on the capacitance change, that is
  • the touch panel in this application can realize both touch and pressure sensing functions, so that there is no need to add a pressure sensing layer in the terminal to realize the pressure sensing function, which solves the need of adding a pressure sensing layer in the existing terminal to achieve pressure
  • the technical problem of the induction function reduces the thickness of the device.
  • the first electrode includes a first trunk and at least one first branch, and the length of the first branch increases with the deformation amount of the flexible substrate While increasing, the resistance value of the first branch is positively related to the length value of the first branch.
  • the first branch is a conductive loop formed by a hollow wire.
  • the first branch is convoluted.
  • the pressure-sensing chip is also electrically connected to the second electrode, and is identified according to a change in the resistance value of the first electrode and a change in the resistance value of the second electrode
  • the second electrode includes a second trunk and at least one second branch, the length of the second branch increases as the deformation amount of the flexible substrate increases, and the resistance value of the second branch It is positively related to the length value of the second branch.
  • the projections of the first branch and the second branch on the surface of the flexible substrate do not overlap.
  • the second branch and the first branch are both conductive loops formed by hollow wires, and are arranged in a spiral shape.
  • the second electrode and the first electrode are disposed in the same layer.
  • both the second electrode and the first electrode are patterned by a transparent conductive layer.
  • one of the first electrode and the second electrode is a signal sensing electrode, and the other is a signal driving electrode.
  • Embodiments of the present application provide a new touch panel and a display device, which include a flexible substrate, a first electrode formed on the flexible substrate, and the shape of the first electrode follows the shape of the flexible substrate Deformation and deformation, the resistance value of the first electrode is correlated with the deformation amount of the shape of the first electrode, the second electrode formed on the flexible substrate, the second electrode and the first
  • the electrodes are insulated and form a capacitor; the touch chip is electrically connected to the first electrode and the second electrode, and the touch operation is recognized according to the change in the capacitance of the capacitor; the pressure sensor chip is at least electrically connected to the first
  • the electrode recognizes the pressing operation according to the change of the resistance value of the first electrode; in this structure, the shape of the first electrode is deformed with the deformation of the flexible substrate, and the resistance value of the first electrode is different from that of the first electrode
  • the deformation of the shape is related, so that the deformation of the flexible substrate can be determined according to the resistance of the first electrode, and the deformation of

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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)
  • Quality & Reliability (AREA)
  • Position Input By Displaying (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

一种触控面板以及显示装置，其通过第一电极（22）和第二电极（23）可以同时实现触控以及压力感应功能，这样就不需要在终端内增加独立的压力感应层，即可实现压力感应功能，解决了现有终端存在的需要增加独立压力感应层才能实现压力感应功能的技术问题。

Description

触控面板以及显示装置 技术领域
本申请涉及触控技术领域，尤其涉及一种触控面板以及显示装置。
 背景技术
随着手机技术发展，手机等终端类产品支持触控、以及压力感应等功能。
在现有技术中，为了实现触控以及压力感应功能，如图1所示，终端内需要设置触控层实现触控功能，设置压力感应层实现压力感应功能，这种方式需要终端增加独立的压力感应层，增加了产品厚度。
即现有终端存在需要增加独立压力感应层才能实现压力感应功能的技术问题。
 技术问题
本申请提供一种触控面板以及显示装置，以解决现有终端存在的需要增加独立压力感应层才能实现压力感应功能的技术问题。
 技术解决方案
为解决上述问题，本申请提供的技术方案如下：
本申请实施例提供了一种触控面板，其包括：
柔性基材；
形成于所述柔性基材上的第一电极，所述第一电极的形状随着所述柔性基材的形变而形变，所述第一电极的电阻值与所述第一电极的形状的形变量呈相关关系；
形成于所述柔性基材上的第二电极，所述第二电极与所述第一电极绝缘设置，且形成电容；
触控芯片，电连接所述第一电极与所述第二电极，根据所述电容的电容值变化识别触控操作；
压力感应芯片，至少电连接所述第一电极，根据所述第一电极的电阻值变化识别按压操作。
在本申请的触控面板中，所述第一电极包括第一主干以及至少一个第一分支，所述第一分支的长度随着所述柔性基材的形变量增大而增大，所述第一分支的电阻值与所述第一分支的长度值正相关。
在本申请的触控面板中，所述第一分支为中空导线所形成的导电回路。
在本申请的触控面板中，所述第一分支回旋设置。
在本申请的触控面板中，所述压力感应芯片还电连接所述第二电极，根据所述第一电极的电阻值变化以及所述第二电极的电阻值变化识别按压操作，所述第二电极包括第二主干以及至少一个第二分支，所述第二分支的长度随着所述柔性基材的形变量增大而增大，所述第二分支的电阻值与所述第二分支的长度值正相关。
在本申请的触控面板中，所述第一分支与所述第二分支在所述柔性基材表面上的投影不重叠。
在本申请的触控面板中，所述第二分支与所述第一分支均为中空导线所形成的导电回路，且交错螺旋状设置。
在本申请的触控面板中，所述第二电极与所述第一电极同层设置。
在本申请的触控面板中，所述第二电极与所述第一电极均由透明导电材层图案化形成。
在本申请的触控面板中，所述第一电极与所述第二电极的其中之一为信号感测电极，且另一个为信号驱动电极。
本申请实施例提供了一种显示装置，其包括触控面板，所述触控面板包括：
柔性基材；
形成于所述柔性基材上的第一电极，所述第一电极的形状随着所述柔性基材的形变而形变，所述第一电极的电阻值与所述第一电极的形状的形变量呈相关关系；
形成于所述柔性基材上的第二电极，所述第二电极与所述第一电极绝缘设置，且形成电容；
触控芯片，电连接所述第一电极与所述第二电极，根据所述电容的电容值变化识别触控操作；
压力感应芯片，至少电连接所述第一电极，根据所述第一电极的电阻值变化识别按压操作。
在本申请的显示装置中，所述第一电极包括第一主干以及至少一个第一分支，所述第一分支的长度随着所述柔性基材的形变量增大而增大，所述第一分支的电阻值与所述第一分支的长度值正相关。
在本申请的显示装置中，所述第一分支为中空导线所形成的导电回路。
在本申请的显示装置中，所述第一分支回旋设置。
在本申请的显示装置中，所述压力感应芯片还电连接所述第二电极，根据所述第一电极的电阻值变化以及所述第二电极的电阻值变化识别按压操作，所述第二电极包括第二主干以及至少一个第二分支，所述第二分支的长度随着所述柔性基材的形变量增大而增大，所述第二分支的电阻值与所述第二分支的长度值正相关。
在本申请的显示装置中，所述第一分支与所述第二分支在所述柔性基材表面上的投影不重叠。
在本申请的显示装置中，所述第二分支与所述第一分支均为中空导线所形成的导电回路，且交错螺旋状设置。
在本申请的显示装置中，所述第二电极与所述第一电极同层设置。
在本申请的显示装置中，所述第二电极与所述第一电极均由透明导电层图案化形成。
在本申请的显示装置中，所述第一电极与所述第二电极的其中之一为信号感测电极，且另一个为信号驱动电极。
 有益效果
本申请实施例提供一种新的触控面板以及显示装置，其包括柔性基材，形成于所述柔性基材上的第一电极，所述第一电极的形状随着所述柔性基材的形变而形变，所述第一电极的电阻值与所述第一电极的形状的形变量呈相关关系，形成于所述柔性基材上的第二电极，所述第二电极与所述第一电极绝缘设置，且形成电容；触控芯片，电连接所述第一电极与所述第二电极，根据所述电容的电容值变化识别触控操作；压力感应芯片，至少电连接所述第一电极，根据所述第一电极的电阻值变化识别按压操作；在该结构中，第一电极的形状随着柔性基材的形变而形变，而第一电极的电阻值与所述第一电极的形状的形变量呈相关关系，这样根据第一电极的电阻就可以确定柔性基材的形变量，而基材的形变量与用户按压的压力大小正相关，即根据第一电极的电阻大小可以确定用户按压的压力大小，从而实现压力感应功能，同时第二电极与第一电极形成电容结构，可以基于电容变动确定用户的触控操作，即本申请中的触控面板通过第一电极和第二电极可以同时实现触控以及压力感应功能，这样就不需要在终端内增加独立的压力感应层，即可实现压力感应功能，解决了现有终端存在的需要增加独立压力感应层才能实现压力感应功能的技术问题。
 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为现有触控面板的结构示意图。
图2为本申请实施例提供的触控面板的结构示意图。
图3为本申请实施例提供的触控面板的具体结构图。
图4为本申请实施例提供的触控面板的第一电极结构示意图。
图5为本申请实施例提供的触控面板的第一电极的简化电路示意图。
图6为本申请实施例提供的触控面板的第二电极结构示意图。
图7为本申请实施例提供的触控面板的第二电极的简化电路示意图。
图8为本申请实施例提供的触控面板的说明结构图。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本申请可用以实施的特定实施例。本申请所提到的方向用语，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申请，而非用以限制本申请。在图中，结构相似的单元是用以相同标号表示。
本申请针对现有终端存在需要增加压力感应层才能实现压力感应功能的技术问题；本申请能够解决该缺陷。
在一种实施例中，如图2所示，本申请提供的触控面板，其包括：
柔性基材21，包括柔性基板、形成有像素单元的柔性显示面板等；
形成于所述柔性基材21上的第一电极22，所述第一电极22的形状随着所述柔性基材21的形变而形变，所述第一电极22的电阻值与所述第一电极22的形状的形变量呈相关关系；
形成于所述柔性基材21上的第二电极23，所述第二电极23与所述第一电极22绝缘设置，且形成电容；
触控芯片（图2未示出），电连接所述第一电极与所述第二电极，根据所述电容的电容值变化识别触控操作；
压力感应芯片（图2未示出），至少电连接所述第一电极，根据所述第一电极的电阻值变化识别按压操作。
在本实施例中，触控面板包括柔性基材，形成于所述柔性基材上的第一电极，所述第一电极的形状随着所述柔性基材的形变而形变，所述第一电极的电阻值与所述第一电极的形状的形变量呈相关关系，形成于所述柔性基材上的第二电极，所述第二电极与所述第一电极绝缘设置，且形成电容；触控芯片，电连接所述第一电极与所述第二电极，根据所述电容的电容值变化识别触控操作；压力感应芯片，至少电连接所述第一电极，根据所述第一电极的电阻值变化识别按压操作；在该结构中，第一电极的形状随着柔性基材的形变而形变，而第一电极的电阻值与所述第一电极的形状的形变量呈相关关系，这样根据第一电极的电阻就可以确定柔性基材的形变量，而基材的形变量与用户按压的压力大小正相关，即根据第一电极的电阻大小可以确定用户按压的压力大小，从而实现压力感应功能，同时第二电极与第一电极形成电容结构，可以基于电容变动确定用户的触控操作，即本申请中的触控面板通过第一电极和第二电极可以同时实现触控以及压力感应功能，这样就不需要在终端内增加独立的压力感应层，即可实现压力感应功能，解决了现有终端存在的需要增加独立压力感应层才能实现压力感应功能的技术问题。
在一种实施例中，相关关系包括正相关和负相关，正相关是指基材21的形变量越大，第一电极22的电阻越大，负相关是指基材21的形变量越大，第一电极22的电阻越小，这两种相关关系都可以实现压力感应功能。
在一种实施例中，如图2所示，所述第一电极22包括第一主干221以及至少一个第一分支222，所述第一分支222的长度随着所述柔性基材21的形变量增大而增大，所述第一分支222的电阻值与所述第一分支222的长度值正相关。
在一种实施例中，如图2所示，所述第一分支222的为中空导线所形成的导电回路。
在一种实施例中，如图2所示，所述第一分支回旋设置。
在一种实施例中，所述第一分支为直线设置，或者弧线设置，或者多种形状组合设置。
在一种实施例中，所述压力感应芯片还电连接所述第二电极，根据所述第一电极的电阻值变化以及所述第二电极的电阻值变化识别按压操作，如图2所示，所述第二电极23包括第二主干231以及至少一个第二分支232，所述第二分支232的长度随着所述柔性基材21的形变量增大而增大，所述第二分支232的电阻值与所述第二分支232的长度值正相关。
在一种实施例中，如图2所示，所述第一分支222与所述第二分支232在所述柔性基材21表面上的投影不重叠。
在一种实施例中，所述第一分支222与所述第二分支232在所述柔性基材21表面上的投影可以部分重叠。
在一种实施例中，如图2所示，所述第二分支232与所述第一分支222均为中空导线所形成的导电回路，且交错螺旋状设置。
在一种实施例中，所述第二分支232与所述第一分支222均为中空导线所形成的导电回路，但是不交错设置。
在一种实施例中，所述第二分支232与所述第一分支222中的一个为中空导线所形成的导电回路，另一个为面状设置。
在一种实施例中，如图2所示，所述第二电极23与所述第一电极22同层设置。
在一种实施例中，所述第二电极23与所述第一电极22设置在所述柔性基材的两个相对表面。
在一种实施例中，所述柔性基材包括第一基材以及第二基材，所述第一电极22设置在所述第一基材的表面，所述第二电极23设置在所述第二基材的表面。
在一种实施例中，第一基材与第二基材的至少其中之一为塑料膜片。
在一种实施例中，该第一基材与该第二基材的其中之一为塑料膜片，且另一个为覆盖板。
在一种实施例中，所述第二电极与所述第一电极均由透明导电层图案化形成。
在一种实施例中，透明导电层为导电玻璃层，如ITO层等。
在一种实施例中，所述第二电极与所述第一电极均为金属层图案化形成。
在一种实施例中，金属层为铜层等。
在一种实施例中，所述第二电极与所述第一电极的其中之一为透明导电层，且另一个为金属层。
在一种实施例中，所述第一电极与所述第二电极的其中之一为信号感测电极，且另一个为信号驱动电极。
现结合具体应用场景对本申请做进一步的说明。
本实施例公开一种新型的触控层的图案设计，基于特殊的图案设计来实现触控功能、压力感应功能一体化。
如图3所示，本实施例将透明金属导电材料设计成两条交缠形状的图案，分别为RX（触控感应电极）图案与TX（触控驱动电极）图案，TX与RX之间形成电容，可以实现触控功能；单个的触控感应电极图案或者触控驱动电极图案设计为中空设计，以便形成导电回路，在受到外界手指压力时，触控感应电极图案或者触控驱动电极图案发生应变效应，其阻抗发生变化，根据阻抗变化量侦测手指压力大小。
图3为TX与RX形成的一个单个功能感应单元，其中TX或者RX各由一根完整的图案构成，TX与RX相互交缠形成螺旋状，RX与TX的重叠位置由透明绝缘层隔开,为准确识别手指的触控信号机压力信号，功能感应单元的尺寸大小为4×4mm至6×6mm之间。
针对互容式电容触控功能的实现：
触控驱动电极图案为驱动单元，由端口c、d输入驱动信号，RX为信号接收端，由端口a、b反馈接收讯号，触控驱动电极图案与触控感应电极图案构成互电容，当手指靠近时，其电容值发生变化，根据电容变化能准确侦测到手指位置；
针对阻抗式压力感应功能的实现：
如图4所示，为单个触控感应电极图案的示意图，其可以分为上下两部分，分别用虚线框表示，上半部分a端口至b端口为引线区域部分，其阻抗用R1表示；下半部分f端口至e端口为功能感应部分，其为中空式设计，由f到e的阻抗用R2表示；整个触控感应电极图案可以采用图5所示的电路图示意，单个触控感应电极图案的阻抗值为R（RX）满足：
R（RX）= R1* R2÷（R1+R2）；
当功能感应线圈部分受到外界压力时发生应变效应，其阻抗R2发生变化,因此导致R（RX）发生变化，不同的压力会导致功能感应线圈阻抗发生不同的变化，从而可以实现识别不同的压力值；
同理，如图6所示，为单个触控驱动电极图案的示意图，其可以分为左右两部分，分别用虚线框表示，右半部分c端口至d端口为引线区域部分，其阻抗用R3表示；左半部分g端口至h端口为功能感应部分，其为中空式设计，由g到h的阻抗用R4表示；单个触控驱动电极图案也可等效为如图7所示的电路示意图，单个触控驱动电极图案的阻抗值为R（TX）满足：
R（TX）= R3* R4÷（R3+R4）；
R4表示触控驱动电极图案的功能感应线圈的阻抗，功能感应线圈部分受到外界压力时发生应变效应，其阻抗R4发生变化,因此导致R（TX）发生变化。
本实施例的压力感应功能工作实现原理为：
当手指接触屏幕时，互容式触控功能部分反馈坐标点位置，压力感应触控功能部分反馈压力大小，结合两者反馈信号可侦测到触摸点的坐标及压力大小信号；
当手指按压屏幕，触控单元阻抗发生变化，压力感应功能被激活，互容式触控进入休眠状态，结合触控感应电极图案或者触控驱动电极图案的阻抗变化量，可以确定压力的大小。
例如如图8所示的为3×3的功能感应单元构成的区域，当手指在按压时，a1端口至a2的端口阻抗发生变化，可以确定按压位置坐标在Row1；同时由于e1端口至e2端口阻抗发生变化，可以确定按压位置坐标在Col2；综合两者的信息，可以确定按压位置坐标为（Row 1，Col2）；结合触控感应电极图案或者触控驱动电极图案的阻抗变化量，可以确定压力的大小。
在一种实施例中，本申请还提供一种显示装置，其包括显示面板、触控面板以及盖板，该触控面板包括基材；设置在所述基材上的第一电极；设置在所述基材上的第二电极，所述第二电极与所述第一电极绝缘设置，且形成电容结构；其中，所述第一电极的电阻与所述基材的形变量呈相关关系；因为第一电极的电阻设置为与所述基材的形变量呈相关关系，根据第一电极的电阻就可以得到基材的形变量，而基材的形变量与用户按压的压力大小正相关，即根据第一电极的电阻大小可以确定用户按压的压力大小，从而实现压力感应功能，同时第二电极与第一电极绝缘设置，且形成电容结构，可以基于电容变动确定用户的触控操作，即本申请中的触控面板可以同时实现触控以及压力感应功能，这样就不需要在终端内增加压力感应层即可实现压力感应功能，解决了现有终端存在的需要增加压力感应层才能实现压力感应功能的技术问题，降低了设备厚度。
在一种实施例中，在本申请的显示装置中，所述第一电极包括第一主干以及至少一个第一分支，所述第一分支的长度随着所述柔性基材的形变量增大而增大，所述第一分支的电阻值与所述第一分支的长度值正相关。
在一种实施例中，在本申请的显示装置中，所述第一分支为中空导线所形成的导电回路。
在一种实施例中，在本申请的显示装置中，所述第一分支回旋设置。
在一种实施例中，在本申请的显示装置中，所述压力感应芯片还电连接所述第二电极，根据所述第一电极的电阻值变化以及所述第二电极的电阻值变化识别按压操作，所述第二电极包括第二主干以及至少一个第二分支，所述第二分支的长度随着所述柔性基材的形变量增大而增大，所述第二分支的电阻值与所述第二分支的长度值正相关。
在一种实施例中，在本申请的显示装置中，所述第一分支与所述第二分支在所述柔性基材表面上的投影不重叠。
在一种实施例中，在本申请的显示装置中，所述第二分支与所述第一分支均为中空导线所形成的导电回路，且交错螺旋状设置。
在一种实施例中，在本申请的显示装置中，所述第二电极与所述第一电极同层设置。
在一种实施例中，在本申请的显示装置中，所述第二电极与所述第一电极均由透明导电层图案化形成。
在一种实施例中，在本申请的显示装置中，所述第一电极与所述第二电极的其中之一为信号感测电极，且另一个为信号驱动电极。
根据上述实施例可知：
本申请实施例提供一种新的触控面板以及显示装置，其包括柔性基材，形成于所述柔性基材上的第一电极，所述第一电极的形状随着所述柔性基材的形变而形变，所述第一电极的电阻值与所述第一电极的形状的形变量呈相关关系，形成于所述柔性基材上的第二电极，所述第二电极与所述第一电极绝缘设置，且形成电容；触控芯片，电连接所述第一电极与所述第二电极，根据所述电容的电容值变化识别触控操作；压力感应芯片，至少电连接所述第一电极，根据所述第一电极的电阻值变化识别按压操作；在该结构中，第一电极的形状随着柔性基材的形变而形变，而第一电极的电阻值与所述第一电极的形状的形变量呈相关关系，这样根据第一电极的电阻就可以确定柔性基材的形变量，而基材的形变量与用户按压的压力大小正相关，即根据第一电极的电阻大小可以确定用户按压的压力大小，从而实现压力感应功能，同时第二电极与第一电极形成电容结构，可以基于电容变动确定用户的触控操作，即本申请中的触控面板通过第一电极和第二电极可以同时实现触控以及压力感应功能，这样就不需要在终端内增加独立的压力感应层，即可实现压力感应功能，解决了现有终端存在的需要增加独立压力感应层才能实现压力感应功能的技术问题。
综上所述，虽然本申请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申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为准。

Claims (20)

  1. 一种触控面板，其包括：
    柔性基材；
    形成于所述柔性基材上的第一电极，所述第一电极的形状随着所述柔性基材的形变而形变，所述第一电极的电阻值与所述第一电极的形状的形变量呈相关关系；
    形成于所述柔性基材上的第二电极，所述第二电极与所述第一电极绝缘设置，且形成电容；
    触控芯片，电连接所述第一电极与所述第二电极，根据所述电容的电容值变化识别触控操作；
    压力感应芯片，至少电连接所述第一电极，根据所述第一电极的电阻值变化识别按压操作。
  2. 根据权利要求1所述的触控面板，其中，所述第一电极包括第一主干以及至少一个第一分支，所述第一分支的长度随着所述柔性基材的形变量增大而增大，所述第一分支的电阻值与所述第一分支的长度值正相关。
  3. 根据权利要求2所述的触控面板，其中，所述第一分支为中空导线所形成的导电回路。
  4. 根据权利要求3所述的触控面板，其中，所述第一分支回旋设置。
  5. 根据权利要求2所述的触控面板，其中，所述压力感应芯片还电连接所述第二电极，根据所述第一电极的电阻值变化以及所述第二电极的电阻值变化识别按压操作，所述第二电极包括第二主干以及至少一个第二分支，所述第二分支的长度随着所述柔性基材的形变量增大而增大，所述第二分支的电阻值与所述第二分支的长度值正相关。
  6. 根据权利要求5所述的触控面板，其中，所述第一分支与所述第二分支在所述柔性基材表面上的投影不重叠。
  7. 根据权利要求5所述的触控面板，其中，所述第二分支与所述第一分支均为中空导线所形成的导电回路，且交错螺旋状设置。
  8. 根据权利要求1所述的触控面板，其中，所述第二电极与所述第一电极同层设置。
  9. 根据权利要求1所述的触控面板，其中，所述第二电极与所述第一电极均由透明导电层图案化形成。
  10. 根据权利要求1所述的触控面板，其中，所述第一电极与所述第二电极的其中之一为信号感测电极，且另一个为信号驱动电极。
  11. 一种显示装置，其包括触控面板，所述触控面板包括：
    柔性基材；
    形成于所述柔性基材上的第一电极，所述第一电极的形状随着所述柔性基材的形变而形变，所述第一电极的电阻值与所述第一电极的形状的形变量呈相关关系；
    形成于所述柔性基材上的第二电极，所述第二电极与所述第一电极绝缘设置，且形成电容；
    触控芯片，电连接所述第一电极与所述第二电极，根据所述电容的电容值变化识别触控操作；
    压力感应芯片，至少电连接所述第一电极，根据所述第一电极的电阻值变化识别按压操作。
  12. 根据权利要求11所述的显示装置，其中，所述第一电极包括第一主干以及至少一个第一分支，所述第一分支的长度随着所述柔性基材的形变量增大而增大，所述第一分支的电阻值与所述第一分支的长度值正相关。
  13. 根据权利要求12所述的显示装置，其中，所述第一分支为中空导线所形成的导电回路。
  14. 根据权利要求13所述的显示装置，其中，所述第一分支回旋设置。
  15. 根据权利要求12所述的显示装置，其中，所述压力感应芯片还电连接所述第二电极，根据所述第一电极的电阻值变化以及所述第二电极的电阻值变化识别按压操作，所述第二电极包括第二主干以及至少一个第二分支，所述第二分支的长度随着所述柔性基材的形变量增大而增大，所述第二分支的电阻值与所述第二分支的长度值正相关。
  16. 根据权利要求15所述的显示装置，其中，所述第一分支与所述第二分支在所述柔性基材表面上的投影不重叠。
  17. 根据权利要求15所述的显示装置，其中，所述第二分支与所述第一分支均为中空导线所形成的导电回路，且交错螺旋状设置。
  18. 根据权利要求11所述的显示装置，其中，所述第二电极与所述第一电极同层设置。
  19. 根据权利要求11所述的显示装置，其中，所述第二电极与所述第一电极均由透明导电层图案化形成。
  20. 根据权利要求11所述的显示装置，其中，所述第一电极与所述第二电极的其中之一为信号感测电极，且另一个为信号驱动电极。
PCT/CN2019/082603 2018-12-14 2019-04-15 触控面板以及显示装置 Ceased WO2020118989A1 (zh)

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