WO2022246921A1 - 触控面板和显示装置 - Google Patents

触控面板和显示装置 Download PDF

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Publication number
WO2022246921A1
WO2022246921A1 PCT/CN2021/099312 CN2021099312W WO2022246921A1 WO 2022246921 A1 WO2022246921 A1 WO 2022246921A1 CN 2021099312 W CN2021099312 W CN 2021099312W WO 2022246921 A1 WO2022246921 A1 WO 2022246921A1
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WO
WIPO (PCT)
Prior art keywords
touch
electrode
area
touch electrode
compensation
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Application number
PCT/CN2021/099312
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English (en)
French (fr)
Inventor
方亮
Original Assignee
武汉华星光电技术有限公司
武汉华星光电半导体显示技术有限公司
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Application filed by 武汉华星光电技术有限公司, 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US17/422,458 priority Critical patent/US20240019973A1/en
Publication of WO2022246921A1 publication Critical patent/WO2022246921A1/zh

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Classifications

    • 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
    • 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; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • 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
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • 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
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • 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
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • G—PHYSICS
    • G06—COMPUTING; 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
    • 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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • 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
    • G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material

Definitions

  • the present application relates to the technical field of display panels, in particular to a touch panel and a display device.
  • the display device mainly includes a liquid crystal display (LCD: liquid crystal display), plasma display panel (PDP: plasma display panel), organic electroluminescence (OLED: Organic light emitting diode) and active-matrix organic light emitting diode (AMOLED: active-matrix organic light emitting diode), which have broad application space in vehicles, mobile phones, tablets, computers and TV products.
  • LCD liquid crystal display
  • PDP plasma display panel
  • OLED Organic light emitting diode
  • AMOLED active-matrix organic light emitting diode
  • the touch function has become one of the standard configurations of most display devices. Capacitive touch screens are widely used. The basic principle is to use tools such as fingers or stylus to generate capacitance with the touch screen, and use The electrical signal formed by the front and rear capacitance changes is used to confirm whether the panel is touched and to confirm the touch coordinates.
  • FIG. 1 An important touch technology of capacitive touch panel is self-capacitance, which can realize the touch function through one or two layers of metal.
  • Figure 1 A conventional design schematic diagram is shown in Figure 1, where the touch electrodes and touch signals The wire is formed of two layers of metal. With this design method, the area of the touch electrodes near the four corners of the display device is smaller than that of the normal area, and the corresponding capacitance value C is relatively small, which eventually leads to a decrease in touch performance in this area.
  • the embodiment of the present application provides a touch panel display device to solve the problem of lower touch performance in the corner area of the existing display device.
  • An embodiment of the present application provides a touch panel, including: a touch electrode array, including a plurality of first touch electrodes and at least one second touch electrode, the area of the second touch electrode is smaller than that of the first touch electrode the area of the second touch electrode; the compensation electrode is arranged on the second touch electrode and electrically connected to the second touch electrode, and the compensation electrode forms compensation and expansion of the area of the second touch electrode; and the touch connection pad, the touch The control electrode array is electrically connected to the touch connection pad through the touch signal line.
  • the areas of the first touch electrodes are the same as S1
  • the sum of the area of the second touch electrodes and the area of the compensation electrode is S2
  • the compensation electrode line of the compensation electrode is electrically connected to the touch electrode line of the second touch electrode, forming an electrical connection between the compensation electrode and the second touch electrode;
  • the effective touch area per unit area of the compensation electrode is greater than the effective touch area per unit area of the touch electrodes in the touch electrode array.
  • the line width of the compensation electrode lines is greater than the line width of the touch electrode lines
  • the line width of the compensation electrode line gradually increases from an end close to the touch electrode line to an end far away from the touch electrode line.
  • the compensation electrode is electrically connected to the touch electrode line of the second touch electrode through the compensation electrode plate, forming an electrical connection between the compensation electrode and the second touch electrode.
  • first touch electrodes and the second touch electrodes are arranged at equal intervals along a first direction and a second direction perpendicular to each other, forming a matrix structure of the touch electrode array;
  • the second touch electrode is located in the corner area of the touch electrode matrix
  • the number of the second touch electrodes corresponds to the number of corners of the touch electrode matrix, and one second touch electrode is arranged corresponding to one corner.
  • a second touch electrode with an area smaller than that of the first touch electrode is arranged in the touch electrode array corresponding to the under-screen camera, and a compensation electrode is arranged on the second touch electrode.
  • the number of the touch signal lines is the same as that of the touch electrodes in the touch electrode array, and one touch signal line corresponds to one touch electrode;
  • One end of the touch signal line is electrically connected to the touch electrode, and the other end of the touch signal line is electrically connected to the touch connection pad.
  • the embodiment of the present application also provides a display device, including a display panel and the touch panel.
  • the display panel includes a non-bending area, a bending area and a binding area, and the non-bending area is connected to the binding area through the bending area, wherein the non-bending area includes a display area and a non-bending area located on the periphery of the display area. display area;
  • the touch electrode array is arranged in the display area, and the compensation electrode arranged on the second touch electrode at the corner of the touch electrode array is located in the non-display area;
  • the touch connection pad is arranged in the binding area, and a display connection pad is also arranged in the binding area, and the display area is connected to the display connection pad through a display connection line.
  • the compensation electrode is connected to the second touch electrode with relatively small area, and then the capacitance value of the second touch electrode is increased, so that the relevant nearby area corresponding to the second touch electrode can also achieve touch control. Performance specifications, thereby enhancing the market competitiveness of products.
  • FIG. 1 is a structural diagram of an existing display device
  • Fig. 2 is a structural diagram of a display device provided by an exemplary embodiment of the present invention.
  • Fig. 3 is an enlarged view at A-A of Fig. 2;
  • Fig. 4 is a connection diagram of the touch electrode area of the second touch electrode and the compensation electrode area of the compensation electrode in an exemplary embodiment of the present invention
  • FIG. 5 is a connection diagram of the touch electrode area of the second touch electrode and the compensation electrode area of the compensation electrode in another exemplary embodiment of the present invention.
  • FIG. 6 is a connection diagram of the touch electrode area of the second touch electrode and the compensation electrode area of the compensation electrode in another exemplary embodiment of the present invention.
  • Fig. 7 is a structural diagram of a display device provided in another exemplary embodiment of the present invention.
  • Figure 8 is an enlarged view of B-B in Figure 7;
  • X is the first direction
  • Y is the second direction
  • the touch panel increases the area of the second touch electrode by adding a compensation electrode on the second touch electrode with a relatively small area, and then increases the capacitance value C of the second touch electrode, so that the second touch electrode corresponds to
  • the area near the touch panel reaches the touch performance specification (for example, the touch performance of the related area near the first touch electrode is achieved).
  • the touch panel can be applied to a display device with a touch function, especially a display device with a capacitive touch panel.
  • a touch panel 300 includes a touch electrode array 310 , a touch signal line 320 and a touch connection pad 330 .
  • the touch electrode array 310 includes several first touch electrodes 311 and at least one second touch electrode 312, the area of the second touch electrode 312 is smaller than the area of the first touch electrode 311, and the second touch electrode 312 is connected to the compensation electrode 313, and the compensation electrode 313 forms the compensation and expansion of the area of the second touch electrode 312.
  • the first touch electrode 311 and the second touch electrode 312 in the touch electrode array 310 pass the touch signal respectively.
  • the wire 320 is electrically connected to the touch connection pad 330 .
  • the number of the touch signal lines 320 is the same as that of the touch electrodes in the touch electrode array 310, one touch signal line 320 corresponds to one touch electrode; one end of the touch signal line 320 is electrically connected to the touch electrodes, The other end of the touch signal line 320 is electrically connected to the touch connection pad 330 .
  • the touch signal line 320 and the touch electrodes can adopt a single-layer metal or double-layer metal design, wherein FIG. 2 shows a double-layer metal design.
  • the capacitance C of the touch electrodes (including the first touch electrodes 311 and the second touch electrodes 312 ) is related to the area of the touch electrodes
  • the area of the second touch electrodes 312 is smaller than the area of the first touch electrodes 311
  • the area corresponding to the second touch electrode 312 will reduce the touch performance due to the small capacitance value C.
  • a compensation electrode 313 is added on the second touch electrode 312, and the compensation electrode 313 is directly electrically connected to the second touch electrode 312.
  • the area of the second touch electrode 312 can be increased, thereby increasing the capacitance C, so that the touch performance of the area corresponding to the second touch electrode 312 after the increased area meets the touch performance specification (for example, reaching the same level as the first touch electrode 312). 311 corresponding to the touch performance of the area), effectively reducing or even eliminating touch blind spots, and improving product competitiveness.
  • the touch panel 300 is specifically applied to a display device 100, the display device 100 includes a display panel 200 and a touch panel 300, and the display panel 200 includes a non-curved The bending area 210, the bending area 220 and the binding area 230, the non-bending area 210 is connected with the binding area 230 through the bending area 220, wherein the non-bending area 210 includes the display area 211 and the non-display area located at the periphery of the display area 211 In the area 212 , the touch electrode array 310 in the touch panel 300 is disposed in the display area 211 .
  • touch connection pad 330 is disposed in the binding area 230
  • a display connection pad 231 is also disposed in the binding area 230
  • the display area 211 is connected to the display connection pad 231 through a display connection line 213 .
  • touch connection pad Touch Connect Pad: TCP
  • display connection pad Display Connect Pad: DCP
  • the display area 211 is based on structural design requirements, and there will be missing parts, such as the display area 211 that was originally a complete rectangle (or other complete graphics), due to design requirements, such as rounded corners and gaps will be formed on the display area 211 (edge or inside) , notches, openings (such as camera openings, earpiece openings) and other structures that cause the area of the display area 211 to be reduced. For example, in FIG.
  • the area is reduced, and the area of the touch electrode disposed at the portion with the reduced area (such as the rounded corner portion in this embodiment) is reduced accordingly, and the touch electrode with the reduced area is the second touch electrode 312 (the corner of the second touch electrode 312 is provided with a notch corresponding to the rounded corner), in order to compensate the second touch electrode 312 with a smaller capacitance value C due to the reduced area,
  • the compensation electrode 313 is set at the gap of the second touch electrode 312, and the compensation electrode 313 is located in the non-display area 212, so as to increase the area reduction of the display area 211 (For example, the area of the rounded corners in this embodiment).
  • the first touch electrodes 311 and the second touch electrodes 312 are arranged at equal intervals along the first direction X and the second direction Y perpendicular to each other. , forming the matrix structure of the touch electrode array 310; the second touch electrodes 312 are located in the corner area of the touch electrode matrix 310; corresponding to the number, and one second touch electrode 312 is set corresponding to one corner.
  • the first direction X is the row direction of the array shown in Figure 2 and Figure 7
  • the second direction Y is the column direction of the array shown in Figure 2 and Figure 7
  • the first direction X and the second direction Y are perpendicular to each other , that is, the rows and columns are perpendicular to each other, and a plurality of touch electrodes are arranged at equal intervals in each row and column.
  • the number of touch electrodes in each row and column is a positive integer, and the specific number can be determined according to actual production needs and customer needs. Specifically in this embodiment, the number of touch electrodes in each row is 4, and the number of touch electrodes in each column is 8.
  • the areas of the first touch electrodes 311 are the same as S1
  • the sum of the area of the second touch electrodes 312 and the area of the compensation electrode 313 is S2, 0.75S1 ⁇ S2 ⁇ 1.25S1.
  • the area of S2 can be determined according to actual production needs and usage needs.
  • the effective touch area per unit area of the compensation electrode 313 is greater than the effective touch area per unit area of the touch electrodes in the touch electrode array 310 .
  • the touch electrode may be the first touch electrode 311 or the second touch electrode 312 .
  • the touch effective area per unit area of the first touch electrode 311 and the second touch electrode 312 is the same.
  • the compensation electrode line 3131 of the compensation electrode 313 is electrically connected to the touch electrode line 3121 of the second touch electrode 312 to form an electrical connection between the compensation electrode 313 and the second touch electrode 312; the line width of the compensation electrode line 3131 is larger than the The line width of the touch electrode lines 3121 is described above.
  • the effective touch area per unit area of the compensation electrode 313 can be increased by changing the line width of the compensation electrode line 3131 in the compensation electrode 313, so that after adding the compensation electrode 313 The touch performance of the nearby related area corresponding to the second touch electrode 312 meets the touch performance specification.
  • the line widths of the compensation electrode lines 3131 are the same. Please continue to refer to FIG.
  • the shape of the touch electrode lines 3121 is grid-like, the pixel unit 400 is arranged in the grid-like cells, the compensation electrodes 313 are located in the non-display area 212 , the shape of the compensation electrode lines 3131 is related to the touch
  • the electrode lines 3121 are the same in a grid shape, but since the compensation electrodes 313 are located in the non-display area 212 , no pixel unit 400 is arranged in the grid formed by the compensation electrode lines 3131 .
  • the compensation electrode 313 is electrically connected to the touch electrode line 3121 of the second touch electrode 312 through the compensation electrode plate 3132, forming the connection between the compensation electrode 313 and the The electrical connection of the second touch electrode 312 .
  • the compensation electrode plate 3132 is composed of several compensation electrode lines 3131 .
  • the effective touch area per unit area of the compensation electrode 313 is increased by changing the effective electrode density (increasing the number and density of the compensation electrode lines 3131 to form the compensation electrode plate 3132 ).
  • the compensation electrode 313 is located in the non-display area 212 , and no pixel unit 400 is disposed in the compensation electrode plate 3132 .
  • the line width of the compensation electrode lines 3131 gradually increases from an end close to the touch electrode lines 3121 to an end far away from the touch electrode lines 3121 . Since there is a risk of visibility mura at the junction of the touch electrode area 310a (in the display area 211) and the compensation electrode area 313a (in the non-display area 212), in this embodiment, by gradually increasing the compensation electrode line 3131 line In a wide way, the touch effective area per unit area of the compensation electrode 313 is increased, so that the touch performance of the nearby related area corresponding to the second touch electrode 312 after the compensation electrode 313 is added meets the touch performance specification.
  • the shape of the compensation electrode lines 3131 is a grid shape
  • the line width of the end of the compensation electrode lines 3131 close to the touch electrode lines 3121 is close to the line width of the touch electrode lines 3121, and the distance between the compensation electrode lines 3131 and the touch The farther the electrode line is, the wider the line width is, and the line width of the compensation electrode line 3131 adopts a uniform transition method and gradually increases.
  • the compensation electrode 313 is located in the non-display area 212
  • the compensation electrode line 3131 is located in the non-display area 212
  • the pixel unit 400 is not arranged in the grid structure formed by the compensation electrode line 3131 .
  • the touch electrode array 310 corresponding to the under-screen camera 500 is provided with a second touch electrode 312 with an area smaller than the first touch electrode 311, and the second touch electrode 312 is A compensation electrode 313 is provided.
  • the position of the second touch electrode 312 can be set not only in the four corners of the touch electrode array 310, but also in the area opened to meet the structural design requirements such as notches and round holes, such as O-Cut and other under-screen cameras.
  • the smaller touch electrode area caused by the 500 design is also within the protection scope of this invention. In this embodiment, please refer to FIG. 7 and FIG.
  • the area of the touch electrode 312 is smaller than that of the first touch electrode 311 , and the compensation electrode 313 is added in the slot 3122 so that the touch performance of the relevant area corresponding to the second touch electrode 312 meets the touch control requirements.
  • the method of increasing the width of the compensation electrode lines 3131 such as Figure 4
  • increasing the density of the compensation electrode lines 3131 to form the compensation electrode plate 3132 such as Figure 5
  • gradually increasing the compensation electrode lines 3131 Wide such as Figure 6 way (the specific way can be selected according to the actual production needs and/or customer needs), to increase the touch effective area per unit area of the compensation electrode 313, so that after adding the compensation electrode 313, the first The touch performance of the nearby related area corresponding to the two touch electrodes 312 meets the touch performance specification.

Abstract

一种触控面板（300）和显示装置（100），触控面板（300）包括触控电极阵列（310）、触控信号线（320）和触控连接垫（330）。触控电极阵列（310）包括若干第一触控电极（311）和至少一个第二触控电极（312），第二触控电极（312）的面积小于第一触控电极（311）的面积，第二触控电极（312）上连接补偿电极（313），触控电极阵列（310）内的第一触控电极（311）和第二触控电极（312）分别通过触控信号线（320）与触控连接垫（330）电连接。

Description

触控面板和显示装置 技术领域
本申请涉及显示面板技术领域，尤其涉及一种触控面板和显示装置。
 背景技术
显示装置主要包括液晶显示器（LCD：liquid crystal display）、等离子体显示面板（PDP：plasma display panel）、有机电致发光（OLED：Organic light emitting diode）、有源矩阵有机电致发光（AMOLED：active-matrix organic light emitting diode），在车载、手机、平板、电脑及电视产品上具有广阔的应用空间。
一般说来，触控功能已成为多数显示装置的标配之一，其中电容性触控屏应用较为广泛，基本原理是使用手指或触控笔等工具与触控屏产生电容，并利用触控前后电容变化所形成的电信号来确认面板是否被触摸及确认触摸坐标。
电容性触控面板的一种重要触控技术是自容式，可通过一层或两层金属实现触控功能，一种常规的设计示意图如图1所示，其中触控电极及触控信号线为两层金属形成。这种设计方式，在显示装置四角区域附近触控电极面积相对正常区的偏小，对应电容值C偏小，最终导致此区域触控性能降低。
 技术问题
本申请实施例提供一种触控面板显示装置，以解决现有显示装置角部区域触控性能降低的问题。
 技术解决方案
本申请实施例提供了一种触控面板，包括：触控电极阵列，包括若干第一触控电极和至少一个第二触控电极，所述第二触控电极的面积小于第一触控电极的面积；补偿电极，设置于第二触控电极上并与所述第二触控电极电连接，补偿电极形成对第二触控电极面积的补偿、扩展；以及触控连接垫，所述触控电极阵列通过触控信号线与触控连接垫电连接。
进一步地，若干所述第一触控电极的面积相同，均为S1，第二触控电极的面积与补偿电极的面积之和为S2，0.75S1≤S2≤1.25S1。
进一步地，所述补偿电极的补偿电极线与第二触控电极的触控电极线电连接，形成补偿电极与第二触控电极的电连接；
所述补偿电极的单位面积内触控有效面积大于所述触控电极阵列内触控电极的单位面积内触控有效面积。
进一步地，所述补偿电极线的线宽大于所述触控电极线的线宽；
和/或，所述补偿电极线的线宽由靠近触控电极线一端向远离触控电极线一端逐步增加。
进一步地，所述补偿电极通过补偿电极板与第二触控电极的触控电极线电连接，形成所述补偿电极与所述第二触控电极的电连接。
进一步地，所述第一触控电极和第二触控电极沿相互垂直的第一方向和第二方向等距间隔排布，形成所述触控电极阵列的矩阵结构；
所述第二触控电极位于触控电极矩阵的角部区域；
所述第二触控电极的数量与触控电极矩阵的角的数量相对应，一个角对应设置一个第二触控电极。
进一步地，与屏下摄像头对应的触控电极阵列内设置有面积小于第一触控电极的第二触控电极，所述第二触控电极上设置有补偿电极。
进一步地，所述触控信号线与触控电极阵列内的触控电极数量相同，一触控信号线对应一触控电极；
所述触控信号线一端与触控电极电连接，触控信号线另一端与所述触控连接垫电连接。
本申请实施例还提供一种显示装置，包括显示面板以及所述触控面板。
进一步地，所述显示面板包括非弯折区、弯折区和绑定区，非弯折区通过弯折区与绑定区连接，其中非弯折区包括显示区及位于显示区外围的非显示区；
所述触控电极阵列设置于显示区，设置于位于触控电极阵列角部的第二触控电极上的补偿电极位于非显示区内；
所述触控连接垫设置于绑定区内，所述绑定区内还设置有显示连接垫，所述显示区通过显示连接线与显示连接垫连接。
 有益效果
本申请的有益效果为：在面积偏小的第二触控电极上连接补偿电极，进而提升第二触控电极的电容值，以使第二触控电极对应的相关附近区域也可达成触控性能规格，从而提升产品的市场竞争力。
 附图说明
下面结合附图，通过对本申请的具体实施方式详细描述，将使本申请的技术方案及其它有益效果显而易见。
图1是现有显示装置的结构示图；
图2是本发明一示例性实施例所提供的显示装置结构示图；
图3是图2的A-A处放大示图；
图4是本发明一示例性实施例中第二触控电极的触控电极区与补偿电极的补偿电极区的连接示图；
图5是本发明另一示例性实施例中第二触控电极的触控电极区与补偿电极的补偿电极区的连接示图；
图6是本发明另一示例性实施例中第二触控电极的触控电极区与补偿电极的补偿电极区的连接示图；
图7是本发明另一示例性实施例中所提供的显示装置结构示图；
图8为图7的B-B处放大示图；
其中，图2和图7中，X为第一方向，Y为第二方向。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
所述触控面板通过在面积偏小的第二触控电极上增加补偿电极，提升第二触控电极的面积，进而提升第二触控电极的电容值C，使得第二触控电极对应的触控面板附近区域达成触控性能规格（例如达到第一触控电极附近相关区域的触控性能）。作为典型应用，触控面板可被应用于具备触控功能的显示装置上，尤其是具备电容性触控面板的显示装置。
参照图2~图4，在本发明的一个实施例中，触控面板300包括触控电极阵列310、触控信号线320和触控连接垫330。其中，触控电极阵列310包括若干第一触控电极311和至少一个第二触控电极312，所述第二触控电极312的面积小于第一触控电极311的面积，第二触控电极312上连接补偿电极313，补偿电极313形成对第二触控电极312的面积的补偿、扩展，触控电极阵列310内的第一触控电极311和第二触控电极312分别通过触控信号线320与触控连接垫330电连接。
其中，所述触控信号线320与触控电极阵列310内的触控电极数量相同，一触控信号线320对应一触控电极；所述触控信号线320一端与触控电极电连接，触控信号线320另一端与所述触控连接垫330电连接。触控信号线320与触控电极可采用单层金属或双层金属设计方式，其中图2所示为一种双层金属设计。
由于触控电极（包括第一触控电极311和第二触控电极312）的电容值C与触控电极的面积相关，第二触控电极312的面积小于第一触控电极311的面积，第二触控电极312对应的区域会由于电容值C偏小而导致触控性能降低，在第二触控电极312上增加补偿电极313，补偿电极313与第二触控电极312直接电连接，可增加第二触控电极312的面积，进而增加电容值C，使得增大面积后的第二触控电极312对应的区域的触控性能满足触控性能规格（例如达到与第一触控电极311对应区域的触控性能），有效减小甚至消除触控盲区，提升产品竞争力。
继续参照图2~图4，在本实施例中，将所述触控面板300具体应用于显示装置100中，所述显示装置100包括显示面板200和触控面板300，显示面板200包括非弯折区210、弯折区220和绑定区230，非弯折区210通过弯折区220与绑定区230连接，其中非弯折区210包括显示区211及位于显示区211外围的非显示区212，触控面板300中的触控电极阵列310设置于显示区211内。其中，所述触控连接垫330设置于绑定区230内，所述绑定区230内还设置有显示连接垫231，所述显示区211通过显示连接线213与显示连接垫231连接。其中，触控连接垫（Touch Connect Pad：TCP），显示连接垫（Display Connect Pad：DCP）。
显示区211基于结构设计需要，会存在缺失的部位，例如原本为完整矩形（或其他完整图形）的显示区211，因设计需要，会在显示区211（边缘或内侧）形成例如圆角、豁口、槽口、开孔（例如摄像头开孔、听筒开孔）等造成显示区211面积减小的结构，例如图2中，便是将显示区211的四个角设计成圆角导致显示区211面积减小，而设置于该面积减小部位（例如本实施例中的圆角部位）的触控电极的面积则随之减小，该面积减小的触控电极即为第二触控电极312（第二触控电极312的角部设置有与圆角相对应的缺口），为补偿因面积减小而导致电容值C偏小的第二触控电极312，在第二触控电极312上增加补偿电极313，在本实施例中，补偿电极313设置于第二触控电极312的缺口处，且补偿电极313位于非显示区212内，以此来增大显示区211面积减小部位（例如本实施例中的圆角位部位）的面积。
请参照图2和图7，在本发明的一个实施例中，所述第一触控电极311和第二触控电极312沿相互垂直的第一方向X和第二方向Y等距间隔排布，形成所述触控电极阵列310的矩阵结构；所述第二触控电极312位于触控电极矩阵310的角部区域；所述第二触控电极312的数量与触控电极矩阵310的角的数量相对应，一个角对应设置一个第二触控电极312。其中，第一方向X为如图2和图7所示的阵列的行方向，第二方向Y为图2和图7所示的阵列的列方向，第一方向X和第二方向Y相互垂直，即行和列相互垂直，每行、每列等距间隔排布有若干触控电极。每行、每列触控电极数量均为正整数，具体数量可根据实际生产需要和客户需求而定。具体到本实施例中，每行触控电极数量为4个，每列触控电极数量为8个。
在本发明的一个实施例中，若干所述第一触控电极311的面积相同，均为S1，第二触控电极312的面积与补偿电极313的面积之和为S2，0.75S1≤S2≤1.25S1。其中，可根据实际生产需要和使用需求决定S2的面积。
在本发明的一个实施例中，补偿电极313的单位面积内触控有效面积大于所述触控电极阵列310内触控电极的单位面积内触控有效面积。其中，触控电极可为第一触控电极311，也可为第二触控电极312。第一触控电极311和第二触控电极312的单位面积内触控有效面积相同。增加补偿电极313的单位面积内触控有效面积，采用较小面积的补偿电极313与第二触控电极312组合，即可使得第二触控电极312所对应的区域的触控性能满足触控性能规格，提升空间利用率。
补偿电极313的补偿电极线3131与第二触控电极312的触控电极线3121电连接，形成补偿电极313与第二触控电极312的电连接；所述补偿电极线3131的线宽大于所述触控电极线3121的线宽。在本实施例中，请参照图4，可通过改变补偿电极313内的补偿电极线3131的线宽方式来实现增大补偿电极313的单位面积内触控有效面积，从而使得增加补偿电极313后的第二触控电极312对应内的附近相关区域的触控性能满足触控性能规格。在本实施中，补偿电极线3131的线宽相同。请继续参照图4，触控电极线3121的形状为网格状，像素单元400设置在网格状的单元格内，补偿电极313位于非显示区212内，补偿电极线3131的形状与触控电极线3121相同，均为网格状，但由于补偿电极313位于非显示区212内，补偿电极线3131形成的网格内不设置像素单元400。
在本发明的另一个实施例中，请参照图5，所述补偿电极313通过补偿电极板3132与第二触控电极312的触控电极线3121电连接，形成所述补偿电极313与所述第二触控电极312的电连接。其中，所述补偿电极板3132由若干补偿电极线3131组成。在本实施例中，是通过改变有效电极密度（增加补偿电极线3131的数量、密度至形成补偿电极板3132）的方式来增大实现补偿电极313的单位面积内触控有效面积。补偿电极313位于非显示区212内，补偿电极板3132内不设置像素单元400。
在本发明的另一个实施例中，请参照图6，所述补偿电极线3131的线宽由靠近触控电极线3121一端向远离触控电极线3121一端逐步增加。由于触控电极区310a（位于显示区211内）与补偿电极区313a（位于非显示区212内）交界处存在可视性mura风险，因此在本实施例中，通过逐步增加补偿电极线3131线宽的方式，来实现增大补偿电极313的单位面积内触控有效面积，从而使得增加补偿电极313后的第二触控电极312对应内的附近相关区域的触控性能满足触控性能规格。其中，在本实施例中，补偿电极线3131的形状为网格状，补偿电极线3131靠近触控电极线3121一端线宽与触控电极线3121的线宽接近，补偿电极线3131距离触控电极线越远，线宽越宽，补偿电极线3131的线宽采用均匀过渡的方式，逐步增加。补偿电极313位于非显示区212内，补偿电极线3131位于非显示区212内，补偿电极线3131形成的网格状结构内不设置像素单元400。
在本发明的另一个实施例中，与屏下摄像头500对应的触控电极阵列310内设置有面积小于第一触控电极311的第二触控电极312，所述第二触控电极312上设置有补偿电极313。第二触控电极312的位置不仅可设置于触控电极阵列310的四角区域，还可设置于槽口、圆孔等为满足结构设计需要而开设的区域，例如因O-Cut等屏下摄像头500设计导致的触控电极面积偏小也在此发明保护范围之内，在本实施例中，请参照图7和图8，第二触控电极312的一端开设有槽口3122而导致第二触控电极312的面积小于第一触控电极311，在槽孔3122内增设补偿电极313，以使得该第二触控电极312所对应的相关区域的触控性能满足触控要求。其中，本实施例中可采用增大补偿电极线3131线宽（例如图4）的方式、增加补偿电极线3131密度形成补偿电极板3132（例如图5）的方式或逐步增加补偿电极线3131线宽（例如图6）的方式（具体方式可根据实际生成需要和/或客户需求进行选择），来实现增大补偿电极313的单位面积内触控有效面积，从而使得增加补偿电极313后的第二触控电极312对应内的附近相关区域的触控性能满足触控性能规格。
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 (19)

  1. 一种触控面板，其中，包括：
    触控电极阵列，包括若干第一触控电极和至少一个第二触控电极，所述第二触控电极的面积小于第一触控电极的面积；
    补偿电极，设置于第二触控电极上并与所述第二触控电极电连接，补偿电极形成对第二触控电极面积的补偿、扩展；以及
    触控连接垫，所述触控电极阵列通过触控信号线与触控连接垫电连接。
  2. 如权利要求1所述的触控面板，其中，若干所述第一触控电极的面积相同，均为S1，第二触控电极的面积与补偿电极的面积之和为S2，0.75S1≤S2≤1.25S1。
  3. 如权利要求1所述的触控面板，其中，所述补偿电极的补偿电极线与第二触控电极的触控电极线电连接，形成补偿电极与第二触控电极的电连接；
    所述补偿电极的单位面积内触控有效面积大于所述触控电极阵列内触控电极的单位面积内触控有效面积。
  4. 如权利要求3所述的触控面板，其中，所述补偿电极线的线宽大于所述触控电极线的线宽。
  5. 如权利要求3所述的触控面板，其中，所述补偿电极通过补偿电极板与第二触控电极的触控电极线电连接，形成所述补偿电极与所述第二触控电极的电连接。
  6. 如权利要求3所述的触控面板，其中，所述补偿电极线的线宽由靠近触控电极线一端向远离触控电极线一端逐步增加。
  7. 如权利要求1所述的触控面板，其中，所述第一触控电极和第二触控电极沿相互垂直的第一方向和第二方向等距间隔排布，形成所述触控电极阵列的矩阵结构；
    所述第二触控电极位于触控电极矩阵的角部区域；
    所述第二触控电极的数量与触控电极矩阵的角的数量相对应，一个角对应设置一个第二触控电极。
  8. 如权利要求1所述的触控面板，其中，与屏下摄像头对应的触控电极阵列内设置有面积小于第一触控电极的第二触控电极，所述第二触控电极上设置有补偿电极。
  9. 如权利要求1所述的触控面板，其中，所述触控信号线与触控电极阵列内的触控电极数量相同，一触控信号线对应一触控电极；
    所述触控信号线一端与触控电极电连接，触控信号线另一端与所述触控连接垫电连接。
  10. 一种显示装置，其中，包括：显示面板以及触控面板；
    所述触控面板包括：
    触控电极阵列，包括若干第一触控电极和至少一个第二触控电极，所述第二触控电极的面积小于第一触控电极的面积；
    补偿电极，设置于第二触控电极上并与所述第二触控电极电连接，补偿电极形成对第二触控电极面积的补偿、扩展；以及
    触控连接垫，所述触控电极阵列通过触控信号线与触控连接垫电连接。
  11. 如权利要求10所述的显示装置，其中，所述显示面板包括非弯折区、弯折区和绑定区，非弯折区通过弯折区与绑定区连接，其中非弯折区包括显示区及位于显示区外围的非显示区；
    所述触控电极阵列设置于显示区，设置于位于触控电极阵列角部的第二触控电极上的补偿电极位于非显示区内；
    所述触控连接垫设置于绑定区内，所述绑定区内还设置有显示连接垫，所述显示区通过显示连接线与显示连接垫连接。
  12. 如权利要求10所述的显示装置，其中，若干所述第一触控电极的面积相同，均为S1，第二触控电极的面积与补偿电极的面积之和为S2，0.75S1≤S2≤1.25S1。
  13. 如权利要求1所述的显示装置，其中，所述补偿电极的补偿电极线与第二触控电极的触控电极线电连接，形成补偿电极与第二触控电极的电连接；
    所述补偿电极的单位面积内触控有效面积大于所述触控电极阵列内触控电极的单位面积内触控有效面积。
  14. 如权利要求13所述的显示装置，其中，所述补偿电极线的线宽大于所述触控电极线的线宽。
  15. 如权利要求13所述的显示装置，其中，所述补偿电极通过补偿电极板与第二触控电极的触控电极线电连接，形成所述补偿电极与所述第二触控电极的电连接。
  16. 如权利要求13所述的显示装置，其中，所述补偿电极线的线宽由靠近触控电极线一端向远离触控电极线一端逐步增加。
  17. 如权利要求10所述的显示装置，其中，所述第一触控电极和第二触控电极沿相互垂直的第一方向和第二方向等距间隔排布，形成所述触控电极阵列的矩阵结构；
    所述第二触控电极位于触控电极矩阵的角部区域；
    所述第二触控电极的数量与触控电极矩阵的角的数量相对应，一个角对应设置一个第二触控电极。
  18. 如权利要求10所述的显示装置，其中，与屏下摄像头对应的触控电极阵列内设置有面积小于第一触控电极的第二触控电极，所述第二触控电极上设置有补偿电极。
  19. 如权利要求10所述的显示装置，其中，所述触控信号线与触控电极阵列内的触控电极数量相同，一触控信号线对应一触控电极；
    所述触控信号线一端与触控电极电连接，触控信号线另一端与所述触控连接垫电连接。
PCT/CN2021/099312 2021-05-24 2021-06-10 触控面板和显示装置 WO2022246921A1 (zh)

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