WO2015158083A1 - 触摸屏及显示装置 - Google Patents

触摸屏及显示装置 Download PDF

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Publication number
WO2015158083A1
WO2015158083A1 PCT/CN2014/084575 CN2014084575W WO2015158083A1 WO 2015158083 A1 WO2015158083 A1 WO 2015158083A1 CN 2014084575 W CN2014084575 W CN 2014084575W WO 2015158083 A1 WO2015158083 A1 WO 2015158083A1
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WO
WIPO (PCT)
Prior art keywords
self
touch screen
capacitance
layer
touch
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/CN2014/084575
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English (en)
French (fr)
Inventor
丁小梁
王海生
刘英明
任涛
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.)
BOE Technology Group Co Ltd
Beijing BOE Optoelectronics Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Beijing BOE Optoelectronics Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BOE Technology Group Co Ltd, Beijing BOE Optoelectronics Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to EP14856803.3A priority Critical patent/EP3133475A4/en
Priority to US14/440,690 priority patent/US9823789B2/en
Publication of WO2015158083A1 publication Critical patent/WO2015158083A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—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 OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04112—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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving

Definitions

  • At least one embodiment of the present invention is directed to a touch screen and a display device. Background technique
  • the Touch Screen Panel With the rapid development of display technology, the Touch Screen Panel has gradually spread throughout people's lives.
  • the touch screen can be divided into an add-on touch panel, an on-cell touch panel, and an in-cell touch panel (In Cell Touch Panel).
  • the external touch screen is a touch-sensitive liquid crystal display formed by separately separating the touch screen from the liquid crystal display (LCD), and the external touch screen has high production cost and low light transmittance.
  • the module is thicker and other shortcomings.
  • the in-cell touch panel embeds the touch electrodes of the touch screen inside the liquid crystal display, which can reduce the thickness of the entire module, and can greatly reduce the manufacturing cost of the touch screen, and is favored by various panel manufacturers.
  • the in-cell touch panel utilizes the principle of mutual capacitance or self-capacitance to detect the touch position of the finger.
  • a plurality of self-capacitance electrodes arranged in the same layer and insulated from each other can be disposed in the touch screen.
  • the capacitance of the respective capacitor electrodes is a fixed value; when the human body touches the screen, the capacitance of the corresponding self-capacitance electrode is a fixed value superimposed on the human body capacitance and the touch position.
  • the human body capacitance can act on all self-capacitances, the body capacitance can only act on the projection capacitance in the mutual capacitance, and the touch change caused by the human body touching the screen is greater than the touch screen produced by the mutual capacitance principle. Therefore, compared with the touch screen using the mutual capacitance principle, the touch screen using the self-capacitance principle can effectively improve the signal-to-noise ratio of the touch, thereby improving the accuracy of the touch sensing.
  • each self-capacitance electrode is connected to the touch detection chip through a separate lead wire.
  • each of the lead wires includes, for example, a wire 2 connecting the self-capacitance electrode 1 to the frame of the touch screen, and a wire disposed at the frame for conducting the self-capacitance electrode 1 to the touch detection chip.
  • the periphery of the terminal 3 is routed 4. Summary of the invention
  • At least one embodiment of the present invention provides a touch screen and a display device for reducing a touch dead zone in a touch screen using the self-capacitance principle.
  • a touch screen provided by at least one embodiment of the present invention includes: a plurality of self-capacitance electrodes disposed in the same layer and independent of each other; and a plurality of wires connecting the self-capacitance electrodes to a frame of the touch screen, each of the wires
  • the two capacitor electrodes are electrically connected to each other, and the respective capacitor electrodes electrically connected to the wires are not coincident with each other; and are located at a frame of the touch screen and are one by one with each of the wires. Corresponding to the surrounding routing of the connection.
  • a display device includes the above touch screen.
  • FIG. 1 is a schematic top plan view of a self-capacitance electrode in a touch screen
  • FIG. 2 is a schematic side view showing a structure of a touch screen according to an embodiment of the present invention
  • FIG. 3 is a schematic top plan view of a touch screen according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a self-capacitance electrode in a touch screen according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a self-capacitance electrode of a display area in a touch screen according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of connection of a self-capacitance electrode disposed in the same layer in each area of the touch screen to a frame according to an embodiment of the present disclosure
  • FIG. 7 is a second schematic side view of a touch screen according to an embodiment of the present invention.
  • FIGS. 8a and 8b are schematic structural views of a via hole or a channel in which a self-capacitance electrode is filled in a second flat layer in a touch screen according to an embodiment of the present invention
  • 9a and 9b are schematic structural views showing the opposite sides of adjacent self-capacitance electrodes in the touch screen provided as fold lines in the touch screen according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of driving timing of a touch screen according to an embodiment of the present invention.
  • each self-capacitance electrode since the number of self-capacitance electrodes is very large, the corresponding lead-out lines are also very large. Taking the area occupied by each self-capacitance electrode as 5mm*5mm, a 5-inch LCD screen requires 264 self-capacitance electrodes. If you design each self-capacitor electrode to be smaller, there will be more self-capacitance electrodes, so you need to set more lead wires. In order to reduce the number of layers during design, the wires in the lead wires are generally disposed in the same layer as the self-capacitance electrodes, but more wires cause the touch dead zone to be larger.
  • the touch dead zone refers to the area where the traces are concentrated in the touch screen.
  • the signal in the touch blind zone is relatively turbulent, that is, the touch performance in the area cannot be guaranteed.
  • Figure 1 is an illustration of 30 self-capacitance electrodes. Thirty self-capacitance electrodes require 30 wires to lead them out to the bezel. A total of 10 wires are required in the densest part of the wire, which causes the touch dead zone to be too large. In addition, due to the large number of wires, the number of peripheral traces connected to the wires in one-to-one correspondence at the frame is also excessive, which causes the frame of the touch screen to expand, which is disadvantageous for the narrow side 411 design.
  • a touch screen provided by at least one embodiment of the present invention includes: a plurality of self-capacitance electrodes 04 disposed in the same layer and independent of each other; and a plurality of wires 05 connecting the self-capacitance electrodes 04 to the frame of the touch screen ; a peripheral trace 07 located at the border of the touch screen and correspondingly connected to each of the wires 05.
  • the touch screen further includes: a touch detection chip for determining a touch position by detecting a change in a capacitance value of the respective capacitor electrode 04 during a touch period, wherein the touch detection chip passes the connection terminal 06 is electrically connected to the peripheral wiring 07. As shown in FIG.
  • each of the wires 05 is electrically connected to at least two self-capacitance electrodes 04 which are spaced apart from each other, and the respective capacitor electrodes 04 electrically connected to the respective wires 05 do not overlap each other;
  • Each two self-capacitance electrodes are connected to one wire 05 as an example for explanation.
  • the wire 05 connects the self-capacitance electrode 04 to the touch detection chip 100 through the peripheral trace 07.
  • the touch detection chip 100 can be disposed, for example, on one substrate or on a flexible printed circuit board.
  • the above touch screen provided by the embodiment of the invention can be applied to an external touch screen or an in-cell touch screen. When applied to the in-cell touch panel, in one embodiment, as shown in FIG.
  • the touch screen may further include: an upper substrate 01 and a lower substrate 02 disposed opposite to each other; the self-capacitance electrode 04 may be disposed on the upper substrate 01 facing downward
  • the black matrix layer 03 and the self-capacitance electrode 04 are simultaneously disposed on the side of the upper substrate 01 facing the lower substrate 02.
  • the black matrix layer 03 and the self-capacitance electrode 04 may also be used. It is disposed on the lower substrate 02 and will not be described here.
  • At least two self-capacitance electrodes 04 disposed at intervals are connected to the frame of the touch screen through a wire 05, and then connected to the touch detection chip through a corresponding peripheral wire 07. Control position detection. Since the connection manner of the plurality of non-adjacent self-capacitance electrodes 04 and one of the wires 05 is used, the total number of the wires 05 in the touch screen can be effectively reduced, thereby reducing the area of the touch dead zone and ensuring the touch performance; As the number of wires 05 decreases, the number of corresponding peripheral wires 07 decreases, which also contributes to the design of the narrow border of the touch screen.
  • the touch detection The chip can determine the touch position by judging the change of the capacitance value of the adjacent self-capacitance electrode 04 connecting the different wires 05, which avoids the misjudgment and realizes the accuracy of the touch sensing. Take the connection relationship of the self-capacitance electrode 04 shown in Fig. 3 as an example. Since the self-capacitance electrode 04 is not connected through the same wire 05 in the X direction, the position in the X direction can be accurately determined.
  • the self-capacitance electrode 04 in the y direction appears to be connected in pairs. Therefore, it is necessary to judge the position in the y direction by the signal change on the different wires 05. For example, when the finger touches the position A, it is known by the signal change on the wire d that A Touching may occur in both the B and B positions, but it is known that the signal on the wire a changes and the signal on the wire b does not change, and the touch is only generated at the A position.
  • the touch panel provided by the embodiment of the present invention may further include: a side disposed on the upper substrate 01 facing the lower substrate 02, or a side disposed on the lower substrate 02 facing the upper substrate 01.
  • the black matrix layer 03; the pattern of the respective capacitor electrodes 04 and the orthographic projection of the pattern of the wires 05 on the lower substrate 02 are located in the regions corresponding to the pattern of the black matrix layer 03.
  • the pattern of the respective capacitor electrode 04 and the pattern of the wire 05 are both disposed in the region corresponding to the pattern of the black matrix layer 03, the electric field generated by the self-capacitance electrode 04 does not affect the electric field in the pixel opening region, Therefore, the normal display is not affected; and the respective capacitor electrodes 04 disposed in the pattern occlusion area of the black matrix layer 03 can also avoid affecting the transmittance of the touch screen.
  • the density of the touch screen is typically on the order of millimeters. Therefore, in one embodiment, the density and footprint of the respective capacitive electrodes 04 can be selected to ensure the desired touch density depending on the desired touch density.
  • the respective capacitor electrode 04 is designed as a square electrode of about 5 mm * 5 mm.
  • the density of the display is usually on the order of micrometers, so generally one self-capacitance electrode 04 can correspond to multiple pixel units in the display. In order to ensure that the pattern of the respective capacitor electrodes 04 does not occupy the open area of the pixel unit, as shown in FIG.
  • the area of the respective capacitor electrode 04 and the open area of the pixel unit may be The pattern of the corresponding position is dug, that is, the pattern of the respective capacitor electrodes 04 can be designed such that the orthographic projection on the lower substrate 02 is a grid-like structure located in the region of the pattern of the black matrix layer 03.
  • a pattern of self-capacitance electrodes 04 is generally provided at the gap of each sub-pixel unit in each pixel unit, and each group of RGB sub-pixel units in Fig. 4 constitutes one pixel unit.
  • the density referred to in the embodiment of the present invention is the pitch of the self-capacitance electrodes of the touch screen or the pitch (Pitch) of the pixel units of the display screen.
  • the wires 05 may be disposed on the same substrate as the self-capacitance electrodes 04, that is, may be disposed on the upper substrate 01 at the same time, or may be simultaneously disposed on the lower substrate 02; the peripheral traces 07 and the touch detection chip are The terminal 06 can be disposed on the lower substrate 02.
  • the wire 05 and the self-capacitance electrode 04 are disposed on the upper substrate 01
  • the wire 05 can be electrically connected to the peripheral trace 07 located on the lower substrate 02 through the upper and lower conduction of conductive particles (eg, gold balls) in the sealant.
  • the wire 05 and the self-capacitance electrode 04 are disposed on the lower substrate 02
  • the wire 05 can be electrically connected directly to the peripheral trace 07 located on the lower substrate 02.
  • each of the wires 05 may be disposed in the same layer as the respective capacitor electrodes 04. Since the pattern of the self-contained electrode 04 and the wire 05 is designed with a metal layer, in order to avoid a short circuit between the respective capacitor electrodes 04, the wires 05 connecting the respective capacitor electrodes 04 need not cross each other. Therefore, at this time, it is possible to electrically connect the two self-capacitance electrodes 04 which are disposed at intervals from each other to one wire 05 as shown in FIG. Thus, the number of wires 05 can be reduced by half relative to the connection mode of the self-capacitance electrode 04 and the wire 05 as shown in Fig. 1, which greatly reduces the area of the touch dead zone.
  • the extending directions of the respective wires 05 may be set to be the same.
  • the shape of the border of the touch screen is a rectangle.
  • the extending direction of each of the wires 05 may be set to coincide with the short side direction of the frame of the touch screen, and the length of the wire 05 connected to the self-capacitance electrode 04 may be shortened as much as possible. The overall area of the touch dead zone.
  • the border of the touch screen generally has four sides, and the respective capacitor electrodes 04 can be connected to the nearest distance through the corresponding wires 05 on the basis that the wires 05 do not cross each other. Side of the side. This shortens the length of the wire 05 connected to the self-capacitance electrode 04 as much as possible, and as a whole, reduces the area of the touch dead zone as much as possible.
  • the design of the above-mentioned reduced touch dead zone provided by the embodiment of the present invention is illustrated by using a 5-inch touch screen.
  • all the self-capacitance electrodes 04 can be divided into 8 regions: Part A - Part H In each area, the self-capacitance electrodes 04 in the area are connected one by one to the terminals of the touch detection chip under the display area (Panel). As shown in FIG. 6, each of the regions in FIG.
  • the respective capacitive electrodes of the Part A region are extracted from the upper left region of the display region, and are introduced to the touch through the left border of the display region. Control the detection terminal of the chip; the respective capacitor electrodes of the Part B area are drawn from above the display area, and then introduced from the left frame of the display area to the touch detection chip terminal; the respective capacitive electrodes of the Part C area are from the display area After the upper one is taken out, it is introduced from the right border of the display area to the touch detection chip terminal; the respective capacitive electrodes of the Part D area are drawn from the upper right of the display area and then introduced to the touch detection chip through the right border of the display area.
  • the respective capacitor electrodes of the Part E area are led out from the lower left of the display area, and then introduced to the touch detection chip terminal through the left border of the display area; the respective capacitor electrodes of the Part F area are from below the display area Directly connected to the touch detection chip terminal after the lead; the respective capacitive electrodes of the Part G area are from the display area The lower part is directly connected to the touch detection chip terminal; the respective capacitor electrodes of the Part H area are led out from the lower right of the display area, and are introduced to the touch detection chip terminal through the right border of the display area.
  • the black matrix layer 03 may be located on a side of the upper substrate 01 facing the lower substrate 02, and a color filter layer may be disposed on the black matrix layer 03 ( In Fig. 2, RGB represents a color filter layer, and a general color filter layer can cover a black matrix layer).
  • RGB represents a color filter layer
  • a general color filter layer can cover a black matrix layer.
  • a first flat layer 08 may be disposed on the black matrix layer 03 and the color filter layer, and the first flat layer 08 is located above the first flat layer 08.
  • the spacer layer 09; the respective capacitor electrode 04 and each of the wires 05 are located between the first flat layer 08 and the spacer layer 09. In this way, the first flat layer 08 can be omitted, and the wire 05 disposed in the same layer as the self-capacitance electrode 04 can directly pass through the frame glue and the peripheral traces on the lower substrate 02 electrically connected to the touch detection chip. 07 connected, saving production process.
  • the self-capacitance electrode 04 and the wire 05 may be disposed in different layers, and the self-capacitance electrode 04 and the corresponding wire 05 are electrically connected through the via.
  • the self-capacitance electrode 04 and the wire 05 are disposed in different layers, in order to reduce the interference of the human body capacitance on the signal transmitted on the wire, the self-capacitance electrode 04 may be disposed between the black matrix layer 03 and the color filter layer, and the wire 05 Set above the color filter layer.
  • the wire 05 is connected to the self-capacitance electrode 04 through a via in the color filter layer, so that the self-capacitance electrode 04 can shield the signal interference caused by the wire 05 covered under itself.
  • a black matrix layer 03 and a color filter layer may be disposed.
  • a second flat layer 10 having a via or channel such as a trapezoid at least in a region corresponding to the pattern of the self-capacitance electrode 04.
  • FIG. 8a shows that the second flat layer 10 has a trapezoidal via in a region corresponding to the pattern of the self-capacitance electrode 04
  • FIG. 8b shows that the second flat layer 10 has a trapezoid in a region corresponding to the pattern of the self-capacitance electrode 04.
  • the channel The pattern of the self-capacitance electrode 04 is filled at least in the via hole or the channel, and filling in the above manner can increase the pattern area of the respective capacitor electrode 04. Further, in the concavo-convex structure of the self-capacitance electrode 04 placed in the via hole or the channel, the convex portion viewed from the side of the finger can aggregate more charges due to the tip end, and can be improved when the finger is touched. The amount of touch change increases the effect of touch sensing.
  • the human body capacitance acts on the self-capacitance of the respective capacitor electrodes 04 by direct fitting
  • the capacitance value of the self-capacitance electrode 04 only under the touch position is There is a large amount of change, and the self-capacitance electrode below the touch position
  • the capacitance value of the adjacent self-capacitance electrode 04 is very small.
  • the touch area of the human body is smaller than the area of one self-capacitance electrode, there is a possibility that the touch position cannot be accurately positioned.
  • the opposite sides of the adjacent two self-capacitance electrodes 04 can be set as a fold line, so that the position of the human body touch can always cover multiple self-capacitances, for example,
  • the overall shape of the respective capacitor electrodes 04 is set in one of two ways or in combination.
  • the two-step structure has the same shape and matches each other, as shown in Figure 9a.
  • 2*2 self-capacitance electrodes 04 are shown in Figure 9a.
  • the structure, the two concave-convex structures have the same shape and match each other, as shown in Fig. 2*2 self-capacitance electrodes 04 are shown in Figure 9b.
  • the touch and display stages can also be used in order to reduce the mutual interference between the display signal and the touch signal and improve the picture quality and the touch accuracy. Time-driven approach.
  • the display driving chip and the touch detection chip can also be integrated into one chip to further reduce the production cost.
  • the time during which the touch screen displays each frame is divided into a display period (display) and a touch period (touch).
  • the time of displaying one frame of the touch screen is 16.7 ms, and 5 ms is selected as the touch time period, and the other 11.7 ms is used as the display time period.
  • the duration of the two can be appropriately adjusted according to the processing capability of the IC chip, and the embodiment of the present invention is not specifically limited.
  • a gate scan signal is sequentially applied to each of the gate signal lines Gate1, Gate2, ..., Gate n in the touch screen, and a gray scale signal is applied to the data signal line Data to realize a liquid crystal display function.
  • the touch detection chip connected to the respective capacitor electrodes Cxi ... Cx n respectively applies driving signals to the touch driving electrodes Cxi ... Cx n .
  • the feedback signals of the respective capacitor electrodes Cxi ... Cx n are received, and the touch signal is realized by analyzing the feedback signal to determine whether a touch occurs.
  • At least one embodiment of the present invention further provides a display device including the above touch screen provided by the embodiment of the present invention.
  • the display device can be: a mobile phone, a tablet computer, Any product or component that has a display function, such as a television, monitor, laptop, digital photo frame, navigator, etc.
  • a display device reference may be made to the embodiment of the touch screen described above, and the repeated description is omitted.
  • the touch screen and the display device provided by the embodiments of the present invention use a self-capacitance principle to set a plurality of self-capacitance electrodes arranged in the same layer and independent of each other, and at least two self-capacitance electrodes arranged at intervals are connected to the frame of the touch screen through a wire. Connect to the touch detection chip through a corresponding peripheral trace for touch position detection.
  • the total number of wires in the touch screen can be effectively reduced, thereby reducing the area of the touch dead zone and ensuring touch performance;
  • the reduction, and the corresponding number of peripheral traces are also reduced, which is also conducive to the design of the narrow border of the touch screen.
  • the touch detection chip can judge the phase
  • the proximity of the capacitance value of the self-capacitance electrode connecting different wires determines the touch position, which avoids misjudgment and realizes the accuracy of touch sensing.

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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)
  • Computer Networks & Wireless Communication (AREA)
  • Position Input By Displaying (AREA)

Abstract

一种触摸屏及显示装置，该触摸屏包括：多个同层设置且相互独立的自电容电极（04）；将所述自电容电极（04）连接至所述触摸屏的边框处的多条导线（05）；以及位于所述触摸屏的边框处且与各条所述导线（05）一一对应连接的周边走线（07）；各条所述导线（05）与相互间隔设置的至少两个自电容电极（04）电性相连，且与各条导线（05）电性相连的各自电容电极（04）之间互不重合。该触摸屏可以降低采用自电容原理的触摸屏中的触控盲区。

Description

触摸屏及显示装置 技术领域
本发明至少一个实施例涉及一种触摸屏及显示装置。 背景技术
随着显示技术的飞速发展， 触摸屏（ Touch Screen Panel ) 已经逐渐遍及 人们的生活中。 目前，触摸屏按照组成结构可以分为：外挂式触摸屏（Add on Mode Touch Panel ) 、 覆盖表面式触摸屏 ( On Cell Touch Panel ) 以及内嵌式 触摸屏（ In Cell Touch Panel )。外挂式触摸屏是将触摸屏与液晶显示屏（ Liquid Crystal Display, LCD )分开生产， 然后贴合到一起形成的具有触摸功能的液 晶显示屏， 外挂式触摸屏存在制作成本较高、 光透过率较低、 模组较厚等缺 点。 内嵌式触摸屏将触摸屏的触控电极内嵌在液晶显示屏内部， 可以减薄模 组整体的厚度， 又可以大大降低触摸屏的制作成本， 受到各大面板厂家的青 睐。
目前， 内嵌式触摸屏是利用互电容或自电容的原理实现检测手指触摸位 置。 利用自电容的原理可以在触摸屏中设置多个同层设置且相互绝缘的自电 容电极。 当人体未触碰屏幕时， 各自电容电极所承受的电容为一固定值； 当 人体触碰屏幕时， 对应的自电容电极所承受的电容为固定值叠加人体电容， 触控位置。 由于人体电容可以作用于全部自电容， 相对于人体电容仅能作用 于互电容中的投射电容， 由人体碰触屏幕所引起的触控变化量会大于利用互 电容原理制作出的触摸屏。 因此相对于利用互电容原理的触摸屏， 利用自电 容原理的触摸屏能有效提高触控的信噪比， 从而提高触控感应的准确性。
釆用自电容原理设计触摸屏时， 每一个自电容电极通过单独的引出线与 触控侦测芯片连接。 如图 1所示， 每条引出线例如包括： 将自电容电极 1连 接至触摸屏的边框处的导线 2， 以及设置在边框处用于将自电容电极 1导通 至触控侦测芯片的接线端子 3的周边走线 4。 发明内容
本发明至少一个实施例提供了一种触摸屏及显示装置， 用以降低釆用自 电容原理的触摸屏中的触控盲区。
本发明至少一个实施例提供的一种触摸屏包括： 多个同层设置且相互独 立的自电容电极;将所述自电容电极连接至所述触摸屏的边框处的多条导线， 各条所述导线与相互间隔设置的至少两个自电容电极电性相连， 且与各条导 线电性相连的各自电容电极之间互不重合； 以及位于所述触摸屏的边框处且 与各条所述导线一一对应连接的周边走线。
本发明至少一个实施例提供的一种显示装置， 包括上述触摸屏。 附图说明
为了更清楚地说明本发明实施例的技术方案， 下面将对实施例的附图作 简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例， 而非对本发明的限制。
图 1为一种触摸屏中自电容电极的俯视结构示意图；
图 2为本发明实施例提供的触摸屏的侧视结构示意图之一；
图 3为本发明实施例提供的触摸屏的俯视结构示意图；
图 4为本发明实施例提供的触摸屏中一个自电容电极的结构示意图； 图 5 为本发明实施例提供的触摸屏中显示区域的自电容电极分区示意 图；
图 6为本发明实施例提供的触摸屏中各区域内同层设置的自电容电极连 接至边框处的连接示意图；
图 7为本发明实施例提供的触摸屏的侧视结构示意图之二；
图 8a和图 8b分别为本发明实施例提供的触摸屏中自电容电极填充于第 二平坦层的过孔或沟道的结构示意图；
图 9a和图 9b分别为本发明实施例提供的触摸屏中相邻的自电容电极相 对的侧边设置为折线的结构示意图；
图 10为本发明实施例提供的触摸屏的驱动时序示意图。 具体实施方式 为使本发明实施例的目的、 技术方案和优点更加清楚， 下面将结合本发 明实施例的附图， 对本发明实施例的技术方案进行清楚、 完整地描述。显然， 所描述的实施例是本发明的一部分实施例， 而不是全部的实施例。 基于所描 述的本发明的实施例， 本领域普通技术人员在无需创造性劳动的前提下所获 得的所有其他实施例， 都属于本发明保护的范围。
附图中各层膜层的厚度和形状不反映真实比例， 目的只是示意说明本发 明内容。
本申请的发明人注意到， 在图 1所述的情形中， 由于自电容电极的数量 非常多， 对应的引出线也会非常多。 以每个自电容电极的所占面积为 5mm*5mm为例， 5寸的液晶显示屏就需要 264个自电容电极。 若将每个自 电容电极设计的更小一些， 则会有更多的自电容电极， 那么需要设置更多的 引出线。 由于在设计时， 为了减少膜层数量， 一般将引出线中的导线和自电 容电极同层设置， 但较多的导线会造成触控盲区偏大。 触控盲区是指触控屏 中走线集中的区域， 在这个触控盲区内的信号相对比较紊乱， 也就是在该区 域内的触控性能无法保证。 图 1是以 30个自电容电极为例进行说明的。 30 个自电容电极需要 30根导线将其引出至边框， 导线最密的地方共需要 10根 导线， 这会造成触控盲区偏大。 另外， 由于导线数量偏多， 也会引起设置在 边框处的与导线一一对应连接的周边走线数量偏多， 这会造成触摸屏的边框 扩大， 不利于窄边 411设计。
本发明至少一个实施例提供的一种触摸屏， 如图 3所示， 包括： 多个同 层设置且相互独立的自电容电极 04; 将自电容电极 04连接至触摸屏的边框 处的多条导线 05; 位于触摸屏的边框处且与各条导线 05——对应连接的周 边走线 07。 在一个实施例中， 该触摸屏还包括： 用于在触控时间段通过检测 各自电容电极 04的电容值变化以判断触控位置的触控侦测芯片，所述触控侦 测芯片通过接线端子 06与周边走线 07电性连接。 如图 3所示， 各条导线 05 与相互间隔设置的至少两个自电容电极 04电性相连， 且与各条导线 05电性 相连的各自电容电极 04之间互不重合；图 3是以每两个自电容电极与一条导 线 05相连为例进行说明。如图 4所示，导线 05通过周边走线 07将自电容电 极 04连接到触控侦测芯片 100。该触控侦测芯片 100例如可以设置在一个基 板上或者设置在柔性印刷电路板上。 本发明实施例提供的上述触摸屏， 可以应用于外挂式触摸屏或内嵌式触 摸屏。 当应用于内嵌式触摸屏时， 在一个实施例中， 如图 2所示， 该触摸屏 还可以包括： 相对设置的上基板 01和下基板 02; 自电容电极 04可以设置于 上基板 01面向下基板 02的一侧，或设置于下基板 02面向上基板 01的一侧。 图 2以在上基板 01面向下基板 02的一侧同时设置黑矩阵层 03和自电容电极 04为例进行说明， 当然在另一个实施例中， 也可以将黑矩阵层 03和自电容 电极 04设置在下基板 02上， 在此不做赞述。
本发明实施例提供的上述触摸屏中将每间隔设置的至少两个自电容电极 04通过一条导线 05连接至触摸屏的边框处后， 通过一条对应的周边走线 07 连接至触控侦测芯片进行触控位置检测。 由于釆用多个互不相邻的自电容电 极 04与一条导线 05对应的连接方式，可以有效减少触摸屏中导线 05总体的 数量， 从而降低触控盲区的面积， 保证触控性能； 此外， 随着导线 05数量的 减少，与之对应的周边走线 07数量也随之减少，这也有利于触摸屏窄边框的 设计。
并且， 由于是将间隔设置的多个自电容电极 04通过一条导线 05连接， 相邻的自电容电极 04通过不同的导线 05连接至边框处， 因此， 当人体触碰 屏幕时， 触控侦测芯片可以通过判断相邻的连接不同导线 05 的自电容电极 04的电容值变化来确定触控位置，这避免了误判，实现了触控感应的准确性。 以图 3所示的自电容电极 04的连接关系为例。 由于在 X方向自电容电极 04 没有通过同一条导线 05连接， 因此可以准确判断出 X方向的位置。在 y方向 的自电容电极 04出现两两相连的情况， 因此， 需要通过不同导线 05上的信 号变化来判断 y方向位置， 例如当手指触摸位置 A时， 通过导线 d上的信号 变化可知， A和 B位置均有可能发生触控， 但是通过导线 a上的信号发生变 化、 导线 b上的信号无变化可知， 仅在 A位置发生了触控。
在一个实施例中， 如图 2所示， 本发明实施例提供的上述触摸屏还可以 包括：设置于上基板 01面向下基板 02的一侧，或设置于下基板 02面向上基 板 01的一侧的黑矩阵层 03; 各自电容电极 04的图形以及导线 05的图形在 下基板 02上的正投影位于黑矩阵层 03的图形对应的区域内。
由于各自电容电极 04的图形和导线 05的图形均设置在黑矩阵层 03的图 形对应的区域， 自电容电极 04产生的电场不会影响像素开口区域的电场， 因 此，不会影响正常显示； 并且设置在黑矩阵层 03图形遮挡区域的各自电容电 极 04还可以避免影响触摸屏的透过率。
触摸屏的密度通常在毫米级， 因此， 在一个实施例中， 可以根据所需的 触控密度选择各自电容电极 04的密度和所占面积以保证所需的触控密度。通 常各自电容电极 04设计为 5mm*5mm左右的方形电极。 显示屏的密度通常 在微米级， 因此一般一个自电容电极 04可对应显示屏中的多个像素单元。为 了保证各自电容电极 04的图形不占用像素单元的开口区域，如图 4所示，在 一个实施例中，可以将各自电容电极 04的图形中与像素单元的开口区域（像 素区域中的空白部分）对应的位置的图形挖去， 即可以将各自电容电极 04 的图形设计为在下基板 02上的正投影为位于黑矩阵层 03的图形所在区域内 的网格状结构。 并且， 为了确保显示的均勾性， 一般在各像素单元中的每个 亚像素单元的间隙处均设置有自电容电极 04的图形， 图 4中每一组 RGB亚 像素单元组成一个像素单元。 本发明实施例中所指的密度是触摸屏的自电容 电极的间距或者显示屏的像素单元的间距（Pitch ) 。
在不同实施例中， 导线 05可以与自电容电极 04设置在同一基板上， 即 可以同时设置在上基板 01上， 也可以同时设置在下基板 02上； 周边走线 07 和触控侦测芯片的接线端子 06可以设置在下基板 02上。例如，导线 05与自 电容电极 04设置在上基板 01时，导线 05可通过封框胶中的导电粒子（例如 金球） 的上下导通作用与位于下基板 02的周边走线 07电性连接。 例如， 导 线 05与自电容电极 04设置在下基板 02时，导线 05可直接与位于下基板 02 的周边走线 07电性连接。
在一个实施例中， 为了在触摸屏中尽量减少膜层数量以及构图工艺， 可 以将各导线 05与各自电容电极 04同层设置。 由于釆用一层金属层设计自电 容电极 04和导线 05的图形，为了避免各自电容电极 04之间发生短路的现象， 连接各自电容电极 04的导线 05需要互不交叉。 因此， 此时可以釆用如图 3 所示的将每相互间隔设置的两个自电容电极 04与一条导线 05电性相连的方 式。 这样， 相对于如图 1所示的自电容电极 04与导线 05——对应相连的连 接方式， 导线 05数量可减少一半， 这大大降低了触控盲区的面积。
在一个实施例中， 在设计各导线 05的延伸方向时， 可以将各导线 05的 延伸方向设置为相同。 一般地， 触摸屏的边框形状为长方形。 在一个实施例 中，为了减少触控盲区的面积，可以将各条导线 05的延伸方向设置为与触摸 屏的边框的短边方向一致， 通过尽可能地缩短连接自电容电极 04的导线 05 的长度的方式， 减少触控盲区整体的面积。
在一个实施例中， 为了尽量减小触控盲区的面积， 触摸屏的边框一般具 有四个侧边， 可以将各自电容电极 04在导线 05互不交叉的基础上通过对应 的导线 05 连接至距离最近的侧边。 这样可以尽可能地缩短连接自电容电极 04的导线 05的长度， 从总体上尽可能地减小触控盲区的面积。
以一个 5寸触摸屏为例说明本发明实施例提供的上述减少触控盲区的设 计， 在 5寸触摸屏中需要的自电容电极 04数量约为 22* 12=264个。 如图 5 所示，为了将每个自电容电极 04都引入至边框处，且尽可能降低触控盲区的 面积， 可以将所有的自电容电极 04共分为 8个区域： Part A -Part H, 在每个 区域都将区域内的自电容电极 04逐个连接至显示区域（Panel ) 下方的触控 侦测芯片的接线端子处。 如图 6所示， 在图 6中每个区域均示出了部分自电 容电极 04的连接关系， Part A区域的各自电容电极从显示区域的左上方区域 引出， 经过显示区域左边框引入至触控侦测芯片的接线端子； Part B区域的 各自电容电极从显示区域的上方引出后， 再从显示区域的左边框引入至触控 侦测芯片接线端子； Part C区域的各自电容电极从显示区域的上方引出后， 再从显示区域的右边框引入至触控侦测芯片接线端子； Part D区域的各自电 容电极从显示区域的右上方引出后经过显示区域的右边框引入至触控侦测芯 片接线端子； 同理， Part E区域的各自电容电极从显示区域的左下方引出后， 经过显示区域的左边框引入至触控侦测芯片接线端子； Part F区域的各自电 容电极从显示区域的下方引出后直接连接至触控侦测芯片接线端子； Part G 区域的各自电容电极从显示区域的下方引出后直接连接至触控侦测芯片接线 端子； Part H区域的各自电容电极从显示区域的右下方引出， 经过显示区域 右边框引入至触控侦测芯片接线端子。
在本发明的一个实施例提供的触摸屏中，如图 2所示，黑矩阵层 03可以 位于上基板 01面向下基板 02的一侧，在黑矩阵层 03上还可以设置有彩色滤 光层（图 2中 RGB表示彩色滤光层， 一般彩色滤光层可以覆盖黑矩阵层） 。 当自电容电极 04与导线 05同层设置时， 可以将各自电容电极 04和各导线 05设置在黑矩阵层 03与彩色滤光层之间， 或设置在彩色滤光层之上。 在本发明的一个实施例提供的触摸屏中， 如图 7 所示， 在黑矩阵层 03 和彩色滤光层之上还可以设有第一平坦层 08， 以及位于第一平坦层 08之上 的隔垫物层 09; 各自电容电极 04和各导线 05位于第一平坦层 08和隔垫物 层 09之间。这样可以省去对第一平坦层 08进行构图，与自电容电极 04的同 层设置的导线 05可直接通过边框胶与位于下基板 02的、 与触控侦测芯片电 性连接的周边走线 07相连， 节省了制作工艺。
在一个实施例中， 为了消除触摸屏中出现的触控盲区， 可以将自电容电 极 04与导线 05异层设置， 且自电容电极 04与对应的导线 05通过过孔电性 连接。 当自电容电极 04与导线 05异层设置时， 为了减少人体电容对在导线 上传输的信号的干扰， 可以将自电容电极 04设置在黑矩阵层 03与彩色滤光 层之间， 将导线 05设置在彩色滤光层之上。 导线 05通过彩色滤光层中的过 孔与自电容电极 04连接， 这样自电容电极 04可以屏蔽自身下方覆盖的导线 05带来的信号干扰。
在本发明实施例提供的上述触摸屏中，由于各自电容电极 04的图形被黑 矩阵层 03的图形遮挡， 因此， 各自电容电极 04的网格状结构的图形的总面 积受限于黑矩阵层 03的图形面积。 为了尽可能增大各自电容电极 04的图形 面积， 以便提高触控灵敏度， 在至少一个实施例中， 如图 8a和图 8b所示， 在黑矩阵层 03与彩色滤光层之间还可以设置有第二平坦层 10， 该第二平坦 层 10至少在与自电容电极 04的图形对应的区域具有例如呈梯形的过孔或沟 道。图 8a示出了第二平坦层 10在与自电容电极 04的图形对应的区域具有梯 形的过孔，图 8b示出了第二平坦层 10在与自电容电极 04的图形对应的区域 具有梯形的沟道。 自电容电极 04的图形至少填充于过孔或沟道内，且填充于 上述方式可以增大各自电容电极 04的图形面积。并且，置于过孔或沟道内的 自电容电极 04具有的凹凸状结构中，从手指侧看过去的凸出来的部分由于其 为尖端， 可以汇聚更多的电荷， 当手指触控时可以提高触控变化量， 进而提 高触控感应的效果。
在本发明实施例提供的触摸屏中， 由于人体电容通过直接辆合的方式作 用于各自电容电极 04的自电容， 因此，人体触碰屏幕时，仅在触摸位置下方 的自电容电极 04 的电容值有较大的变化量， 与触摸位置下方的自电容电极 04相邻的自电容电极 04的电容值变化量非常小。 这样， 在人体的触控面积 比一个自电容电极的面积要小时，有可能出现无法准确定位触摸位置的情形。 因此， 在本发明的一个实施例提供的触摸屏中， 可以将相邻的两个自电容电 极 04相对的侧边均设置为折线，使人体触控的位置可以始终覆盖多个自电容 例如， 可以釆用如下两种方式之一或组合的方式设置各自电容电极 04 的整体形状。 状结构， 两阶梯状结构形状一致且相互匹配， 如图 9a所示。 图 9a中示出了 2*2个自电容电极 04。 状结构， 两凹凸状结构形状一致且相互匹配， 如图％所示。 图 9b中示出了 2*2个自电容电极 04。
在一个实施例中， 为了降低显示信号和触控信号之间的相互干扰， 提高 画面品质和触控准确性， 在本发明实施例提供的上述触摸屏中， 触控和显示 阶段还可以釆用分时驱动的方式。 并且， 在一个实施例中， 还可以将显示驱 动芯片和触控侦测芯片整合为一个芯片， 以进一步降低生产成本。
在一个实施例中， 例如， 如图 10所示的驱动时序图中， 将触摸屏显示每 一帧 （V-sync ) 的时间分成显示时间段（显示）和触控时间段（触控） 。 例 如， 图 10所示的驱动时序图中触摸屏的显示一帧的时间为 16.7ms， 选取其 中 5ms作为触控时间段， 其他的 11.7ms作为显示时间段。 当然也可以根据 IC芯片的处理能力适当的调整两者的时长， 本发明的实施例不做具体限定。 在显示时间段（显示），对触摸屏中的每条栅极信号线 Gatel， Gate2... ... Gate n依次施加栅扫描信号， 对数据信号线 Data施加灰阶信号， 实现液晶显示功 能。 在触控时间段（触控） ， 与各自电容电极 Cxi ... ... Cx n连接的触控侦测 芯片向各触控驱动电极 Cxi ... ... Cx n分别施加驱动信号， 同时接收各自电容 电极 Cxi ... ... Cx n的反馈信号， 通过对反馈信号的分析判断是否发生触控， 以实现触控功能。
基于同一发明构思， 本发明至少一个实施例还提供了一种显示装置， 其 包括本发明实施例提供的上述触摸屏。 该显示装置可以为： 手机、平板电脑、 电视机、 显示器、 笔记本电脑、 数码相框、 导航仪等任何具有显示功能的产 品或部件。 该显示装置的实施可以参见上述触摸屏的实施例， 重复之处不再 赘述。
本发明实施例提供的触摸屏及显示装置， 利用自电容的原理设置多个同 层设置且相互独立的自电容电极， 每间隔设置的至少两个自电容电极通过一 条导线连接至触摸屏的边框处后， 通过一条对应的周边走线连接至触控侦测 芯片进行触控位置检测。 由于釆用多个互不相邻的自电容电极与一条导线对 应的连接方式， 可以有效减少触摸屏中导线总体的数量， 从而降低触控盲区 的面积， 保证触控性能； 此外， 随着导线数量的减少， 与之对应的周边走线 数量也随之减少， 这也有利于触摸屏窄边框的设计。 并且， 由于将间隔设置 的多个自电容电极通过一条导线连接， 相邻的自电容电极通过不同的导线连 接至边框处， 因此， 当人体触碰屏幕时， 触控侦测芯片可以通过判断相邻的 连接不同导线的自电容电极的电容值变化来确定触控位置， 这避免了误判， 实现了触控感应的准确性。
显然， 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本 发明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本发明权利要 求及其等同技术的范围之内， 则本发明也意图包含这些改动和变型在内。
本申请要求于 2014年 4月 18日递交的中国专利申请第 201410157705.4 号的优先权， 在此全文引用上述中国专利申请公开的内容以作为本申请的一 部分。

Claims

权利要求书
1、 一种触摸屏， 包括：
多个同层设置且相互独立的自电容电极；
将所述自电容电极连接至所述触摸屏的边框处的多条导线， 其中， 各条 所述导线与相互间隔设置的至少两个自电容电极电性相连， 且与各条导线电 性相连的各自电容电极之间互不重合； 以及
位于所述触摸屏的边框处且与各条所述导线——对应连接的周边走线。
2、如权利要求 1所述的触摸屏，还包括： 通过接线端子与所述周边走线 电性连接的触控侦测芯片。
3、如权利要求 1或 2所述的触摸屏，还包括： 相对设置的上基板和下基 板；
其中， 所述自电容电极设置于所述上基板面向所述下基板的一侧， 或设 置于所述下基板面向所述上基板的一侧。
4、如权利要求 3所述的触摸屏，还包括： 设置于所述上基板面向所述下 基板的一侧， 或设置于所述下基板面向所述上基板的一侧的黑矩阵层； 其中， 各所述自电容电极的图形以及所述导线的图形在所述下基板上的 正投影位于所述黑矩阵层的图形对应的区域内。
5、如权利要求 4所述的触摸屏， 其中， 各所述自电容电极的图形为在所 述下基板上的正投影为位于所述黑矩阵层的图形对应的区域内的网格状结 构。
6、 如权利要求 1-5任一所述的触摸屏， 其中， 各条所述导线与相互间隔 设置的两个自电容电极电性相连， 各条所述导线与各所述自电容电极同层设 置。
7、 如权利要求 1-6任一所述的触摸屏， 其中， 所述触摸屏的边框形状为 长方形， 各条所述导线的延伸方向与所述边框的短边方向一致。
8、 如权利要求 1-6任一所述的触摸屏， 其中， 所述触摸屏的边框具有四 个侧边， 各所述自电容电极在所述导线互不交叉的基础上通过对应的所述导 线连接至距离最近的侧边。
9、 如权利要求 4-8任一所述的触摸屏， 其中， 所述黑矩阵层位于所述上 基板面向所述下基板的一侧， 在所述黑矩阵层上设置有彩色滤光层； 各所述自电容电极和各所述导线位于所述黑矩阵层与所述彩色滤光层之 间， 或位于所述彩色滤光层之上。
10、 如权利要求 9所述的触摸屏， 其中， 在所述黑矩阵层和所述彩色滤 光层之上设有第一平坦层， 以及位于所述第一平坦层之上隔垫物层；
各所述自电容电极和各所述导线位于所述第一平坦层和所述隔垫物层之 间。
11、 如权利要求 1-5任一所述的触摸屏， 其中， 所述导线与所述自电容 电极异层设置， 所述自电容电极与对应的导线通过过孔电性连接。
12、如权利要求 11所述的触摸屏， 其中， 所述黑矩阵层位于所述上基板 面向所述下基板的一侧， 在所述黑矩阵层上设置有彩色滤光层；
所述自电容电极位于所述黑矩阵层与所述彩色滤光层之间； 所述导线位 电性连接。
13、如权利要求 9或 12所述的触摸屏， 其中， 在所述黑矩阵层与所述彩 色滤光层之间设置有第二平坦层， 所述第二平坦层至少在与所述自电容电极 的图形对应的区域具有过孔或沟道， 所述自电容电极的图形至少填充于所述 过孔或沟道内。
14、 如权利要求 13所述的触摸屏， 其中， 所述过孔或沟道呈梯
15、 如权利要求 13或 14所述的触摸屏， 其中， 填充于所述过孔或沟道
16、 如权利要求 1-15任一项所述的触摸屏， 其中， 相邻的两个所述自电 容电极相对的侧边均为折线。
17、如权利要求 16所述的触摸屏， 其中，相邻的两个自电容电极相对的 为折线的侧边均具有阶梯状结构， 两阶梯状结构形状一致且相互匹配； 和 / 或， 状结构形状一致且相互匹配。
18、 一种显示装置， 包括如权利要求 1-17任一项所述的触摸屏。
PCT/CN2014/084575 2014-04-18 2014-08-16 触摸屏及显示装置 Ceased WO2015158083A1 (zh)

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