WO2017128466A1 - 一种触控面板 - Google Patents

一种触控面板 Download PDF

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Publication number
WO2017128466A1
WO2017128466A1 PCT/CN2016/074549 CN2016074549W WO2017128466A1 WO 2017128466 A1 WO2017128466 A1 WO 2017128466A1 CN 2016074549 W CN2016074549 W CN 2016074549W WO 2017128466 A1 WO2017128466 A1 WO 2017128466A1
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Prior art keywords
switching
switching element
control signal
circuit
voltage
Prior art date
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Ceased
Application number
PCT/CN2016/074549
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English (en)
French (fr)
Inventor
郝思坤
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.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
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Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US15/021,706 priority Critical patent/US10459591B2/en
Publication of WO2017128466A1 publication Critical patent/WO2017128466A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—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
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • 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
    • 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
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • 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
    • G06F3/047—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using sets of wires, e.g. crossed wires
    • 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
    • G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3674—Details of drivers for scan electrodes

Definitions

  • the present invention relates to the field of touch technologies, and in particular, to a touch panel.
  • Liquid crystal display is one of the most widely used flat panel displays, and has gradually become a high-resolution color screen widely used in various electronic devices such as mobile phones, personal digital assistants (PDAs), digital cameras, computer screens or notebook screens. Display.
  • PDAs personal digital assistants
  • LCD liquid crystal display
  • users have put forward higher requirements on the display quality, design, man-machine interface, etc. of the liquid crystal display.
  • the touch technology has become a technology because of its advantages of convenient operation, durability, and easy communication. Hot spots for development.
  • Touch technology is mainly divided into single touch technology and multi-touch technology.
  • Single touch technology can only recognize one touch point. If you click two points on the screen at the same time, you can't react correctly.
  • Multi-touch technology can decompose tasks into two aspects. One is to collect multiple signals at the same time, and the other is to judge the meaning of each signal, which is called gesture recognition, so that five fingers of people can be identified. Click and touch actions at the same time. Multi-touch technology can further enhance the reliable usability of touch screens to meet a variety of feature-rich applications.
  • the mutual capacitance touch screen mainly uses the ITO to form the lateral electrode 11 and the vertical electrode 12 on the surface of the glass.
  • Each of the lateral electrodes 11 is led out using Tx driving leads, and each of the vertical electrodes 12 is taken out using Rx sensing leads.
  • a capacitance is formed, that is, the lateral electrode 11 and the longitudinal electrode 12 respectively constitute the two poles of the capacitor.
  • the touch driving signals are sequentially emitted to the lateral electrodes 11 by using Tx leads, all the longitudinal electrodes 12 simultaneously receive signals, and the received signals are output through the Rx leads, so that all the lateral electrodes 11 and the longitudinal electrodes 12 can be obtained.
  • the size of the capacitance of the point that is, the capacitance of the two-dimensional plane of the entire touch screen. According to the two-dimensional capacitance change data of the touch screen, the coordinates of each touch point can be calculated. Therefore, Even if there are multiple touch points on the screen, the real coordinates of each touch point can be calculated, thereby enabling multi-touch.
  • each of the lateral electrodes 11 needs to be connected with one Tx driving lead, that is, the number of the lateral electrodes 11 is the same as the number of Tx driving leads, and the Tx driving leads are located at the border position, and a large number.
  • Tx drive leads require more space, which is not conducive to the development of narrow frame.
  • the technical problem to be solved by the present invention is to provide a touch panel capable of reducing the number of driving leads for inputting a touch driving signal, which is advantageous for the development of a narrow frame.
  • a technical solution adopted by the present invention is to provide a touch panel, comprising: a first gating circuit, at least two touch electrodes disposed in rows and columns, and each of the touches respectively connected At least two wires of the electrode; the first gating circuit includes two first ends and at least two second ends, wherein the first end is configured to provide a touch driving signal, and each of the second ends Directly or indirectly connecting one of the wires, the number of first ends for providing the touch driving signal is less than the number of the second ends, and for providing the first end of the touch driving signal Selectively connecting one of the at least two second ends; wherein the touch panel further comprises a first voltage line, a second voltage line, and at least one first control signal line, the first gating circuit comprising At least two first switching circuits; the first voltage line is for inputting a first voltage, the first voltage is used to form the touch driving signal, and the second voltage line is used for inputting a second voltage;
  • the first switch The circuit includes a first voltage input end
  • each of the first switch circuits includes a first switch unit and a second switch unit;
  • the first switch unit includes at least one first switch element, the at least one first switch element is connected in series, the at least one One end of the series branch where a switching element is located is connected to the first voltage input end of the first switching circuit, and the other end of the series branch where the at least one first switching element is located is connected to the first switching circuit a first output end, the control end of the at least one first switching element is connected in one-to-one correspondence with at least one first control signal input end of the first switching circuit;
  • the second switching unit comprises at least one second switching element The at least one second switching element is connected in parallel, one end of the at least one second switching element is connected to a first output end of the first switching circuit, and the other end of the at least one second switching element is connected to a second voltage input end of the first switch circuit, a control end of the at least one second switch element, and at least one first of the first switch circuit
  • the signal input terminals are connected in a
  • the at least one first switching element is a PMOS transistor, and the at least one second switching element is an NMOS transistor.
  • the touch panel further includes a second gating circuit, a third voltage line, a fourth voltage line, and at least one second control signal line, where the second gating circuit includes two third ends, at least two a fourth end and at least two second switching circuits, wherein the third end is for providing the touch driving signal; the third voltage line is for inputting the first voltage, the fourth voltage a line for inputting the second voltage; each of the second switch circuits includes a third voltage input terminal, a fourth voltage input terminal, a second output terminal, and at least one second control signal input terminal, the at least two a third voltage input end of the second switching circuit is connected to be connected to the third voltage line as a third end of the second gating circuit for providing the touch driving signal, the at least two a fourth voltage input of the second switching circuit is coupled to be coupled to the fourth voltage line as another third end of the second gating circuit, the second output of each of the second switching circuits As one of the second gating circuits The fourth end is connected to the other end of one of the wires
  • each of the second switch circuits includes a third switch unit and a fourth switch unit;
  • the third switch unit includes at least one third switch element, the at least one third switch element is connected in series, the at least one One end of the series branch where the three switching elements are located is connected to the third voltage input end of the second switching circuit, and the other end of the series branch where the at least one third switching element is located is connected to the second switching circuit a second output end, wherein the control end of the at least one third switching element is connected in one-to-one correspondence with the at least one second control signal input end of the second switching circuit;
  • the fourth switching unit comprises at least one fourth switching element The at least one fourth switching element is connected in parallel, one end of the at least one fourth switching element is connected to a second output end of the second switching circuit, and the at least one fourth switching element The other end of the device is connected to the fourth voltage input end of the second switch circuit, and the control end of the at least one fourth switch element is in one-to-one correspondence with the at least one second control signal input end of
  • the number of the touch electrodes is the same as the number of the second switch circuits, and is m.
  • the at least one third switching element is a PMOS transistor, and the at least one fourth switching element is an NMOS transistor.
  • a touch panel including: a first gating circuit, at least two touch electrodes disposed in rows and columns, and each of the touch electrodes respectively connected At least two wires;
  • the first gating circuit includes at least one first end and at least two second ends, wherein the first end is used to provide a touch driving signal, and each of the second ends is directly Or indirectly connecting one of the wires, the number of the first ends for providing the touch driving signal is less than the number of the second ends, and is used for providing the first end selection of the touch driving signal
  • One of the at least two second ends is connected sexually.
  • the touch panel further includes a first voltage line, a second voltage line, and at least one first control signal line
  • the first gating circuit includes at least two first switching circuits
  • the first gating The circuit includes two first ends, wherein the first end is used to provide the touch driving signal; the first voltage line is used to input a first voltage, and the first voltage is used to form the touch a driving signal, the second voltage line is for inputting a second voltage; each of the first switching circuits includes a first voltage input end, a second voltage input end, and a first output end And at least one first control signal input end, wherein the first voltage input ends of the at least two first switch circuits are connected to serve as a first end of the first gating circuit for providing the touch drive signal Connected to the first voltage line, the second voltage input terminals of the at least two first switching circuits are connected to be connected to the second voltage line as another first end of the first gating circuit, a first output end of each of the first switching circuits is connected to one end of one of the
  • each of the first switch circuits includes a first switch unit and a second switch unit;
  • the first switch unit includes at least one first switch element, the at least one first switch element is connected in series, the at least one One end of the series branch where a switching element is located is connected to the first voltage input end of the first switching circuit, and the other end of the series branch where the at least one first switching element is located is connected to the first switching circuit a first output end, the control end of the at least one first switching element is connected in one-to-one correspondence with at least one first control signal input end of the first switching circuit;
  • the second switching unit comprises at least one second switching element The at least one second switching element is connected in parallel, one end of the at least one second switching element is connected to a first output end of the first switching circuit, and the other end of the at least one second switching element is connected to a second voltage input end of the first switch circuit, a control end of the at least one second switch element, and at least one first of the first switch circuit
  • the signal input terminals are connected in a
  • the at least one first switching element is a PMOS transistor, and the at least one second switching element is an NMOS transistor.
  • the touch panel further includes a second gating circuit, a third voltage line, a fourth voltage line, and at least one second control signal line, where the second gating circuit includes two third ends, at least two a fourth end and at least two second switching circuits, wherein the third end is for providing the touch driving signal; the third voltage line is for inputting the first voltage, the fourth voltage a line for inputting the second voltage; each of the second switch circuits includes a third voltage input terminal, a fourth voltage input terminal, a second output terminal, and at least one second control signal input terminal, the at least two a third voltage input end of the second switching circuit is connected to be connected to the third voltage line as a third end of the second gating circuit for providing the touch driving signal, the at least two a fourth voltage input of the second switching circuit is coupled to be coupled to the fourth voltage line as another third end of the second gating circuit, the second output of each of the second switching circuits As one of the second gating circuits The fourth end is connected to the other end of one of the wires
  • each of the second switch circuits includes a third switch unit and a fourth switch unit;
  • the third switch unit includes at least one third switch element, the at least one third switch The elements are connected in series, one end of the series branch where the at least one third switching element is located is connected to the third voltage input end of the second switching circuit, and the other end of the series branch where the at least one third switching element is located is connected To a second output end of the second switching circuit, a control end of the at least one third switching element is connected in one-to-one correspondence with at least one second control signal input end of the second switching circuit;
  • the fourth switch The unit includes at least one fourth switching element, the at least one fourth switching element being connected in parallel, one end of the at least one fourth switching element being connected to a second output end of the second switching circuit, the at least one fourth The other end of the switching element is connected to the fourth voltage input end of the second switching circuit, and the control end of the at least one fourth switching element and the at least one second control signal input end of the second switching circuit are one by one Cor
  • the number of the touch electrodes is the same as the number of the second switch circuits, and is m.
  • the at least one third switching element is a PMOS transistor, and the at least one fourth switching element is an NMOS transistor.
  • the touch electrode serves as a common electrode of the touch panel at the same time.
  • each touch electrode is connected to a wire
  • the first gating circuit includes a first for providing a touch driving signal. And a second end of each of the second ends, wherein each of the second ends is connected to a wire, and the first end of the touch driving signal is selectively connected to one of the second ends, thereby selectively selecting the touch driving signal Output to the wire connected to the touch electrode through a second end
  • the touch driving signals are respectively provided to the touch electrodes to implement the touch function of the touch panel, and the number of the first ends for providing the touch driving signals is less than the second end, that is, for providing touch
  • the number of the first ends of the driving signals is less than the number of the touch electrodes. Therefore, the number of the leads for inputting the touch driving signals to the touch electrodes can be less than the number of the touch electrodes, so that compared with the prior art, Reducing the number of leads for inputting touch drive signals facilitates the development of narrow frames.
  • FIG. 1 is a schematic structural view of a touch panel of the prior art
  • FIG. 2 is a schematic structural view of an embodiment of a touch panel of the present invention.
  • FIG. 3 is a schematic structural view of another embodiment of a touch panel of the present invention.
  • FIG. 4 is a schematic structural view of a first switch circuit in the touch panel shown in FIG. 3;
  • FIG. 5 is a schematic structural diagram of an embodiment of a touch panel of the present invention.
  • FIG. 6 is a schematic structural diagram of a first switch circuit S 1 in the touch panel shown in FIG. 5;
  • FIG. 7 is a schematic structural diagram of a first switch circuit S 5 in the touch panel shown in FIG. 5;
  • FIG. 8 is a schematic structural diagram of a first switch circuit S 10 in the touch panel shown in FIG. 5;
  • FIG. 9 is a schematic structural diagram of a first switch circuit S 15 in the touch panel shown in FIG. 5;
  • FIG. 10 is a timing chart of operation of the touch panel shown in FIG. 5;
  • FIG. 11 is a schematic structural view of another embodiment of a touch panel of the present invention.
  • FIG. 12 is a schematic structural view of a first switch circuit in the touch panel shown in FIG. 11;
  • FIG. 13 is a schematic structural view of still another embodiment of the touch panel of the present invention.
  • the touch panel includes a first gate circuit 21 , at least two touch electrodes 22 disposed in rows and columns, and at least two wires respectively connected to each touch electrode 22 . twenty three.
  • the first gating circuit 21 includes at least one first end 211 and at least two second ends 212.
  • One of the first ends 211 is for providing a touch driving signal, and the number of the first ends 211 for providing the touch driving signals is less than the number of the second ends 212.
  • Each of the second ends 212 is directly connected to a wire 23 to be connected to a touch electrode 22.
  • the first end 211 for providing the touch driving signal is selectively connected to one of the at least two second ends 212, so that the first end 21 for providing the touch driving signal can selectively connect at least two touches.
  • One of the electrodes 22, so the touch drive signal 21 can be input through the first end 21 and then transmitted to the corresponding one of the touch electrodes 22 through a second end 212 connected to the first end 21.
  • the first gating circuit 21 can be implemented by using a multiplexer or by using a two-selection switch.
  • the first gate 211 is used to selectively connect one of the touch electrodes 22 to the first end 211 of the input touch driving signal, thereby inputting the desired touch to the touch electrode 22 one by one. Control the drive signal to achieve touch function. Therefore, in this embodiment, only one first end 211 can be used to input touch drive signals to at least two touch electrodes 22 one by one, that is, one touch drive electrode 22 can be realized one by one.
  • the input of the required touch driving signals is input, so that the number of driving leads can be reduced compared with the existing method in which each of the touch electrodes 22 needs a separate driving driver to input the touch driving signals, thereby saving the driving.
  • the space occupied by the leads facilitates the development of the narrow frame of the touch panel.
  • the touch panel is a liquid crystal display panel.
  • Each of the wires 23 is connected to one touch electrode 22, and the wires 23 connected to the different touch electrodes 22 are different.
  • Each of the touch electrodes 22 includes a plurality of touch units 221 arranged in the row direction.
  • the plurality of touch units 221 are connected by a wire 23 corresponding to the touch electrodes 22 .
  • the wire 23 includes opposite ends.
  • each touch electrode can also be an integral strip-shaped touch electrode.
  • the touch panel further includes a plurality of sensing electrodes 24 , and the plurality of touch electrodes 22 and the plurality of sensing electrodes 24 overlap each other.
  • the touch electrode 22 of the present embodiment simultaneously serves as a common electrode.
  • the liquid crystal driving phase is used to implement the screen display
  • the touch scanning phase is used for the touch scanning to implement the touch function.
  • the touch scan may be completed in a time period before the display of the next frame after one frame of the image is displayed, or may be simultaneously performed during the display scan of one frame of the image, for example, completing the first half of the frame of one frame. After part of the display scan, the touch scan of the touch panel corresponding to the first half of the frame is performed while the display scan is performed on the second half of the frame.
  • the touch electrode 22 is used as a common electrode for inputting a common voltage.
  • the touch electrode 22 is used to input a touch driving signal to implement a touch function.
  • the touch panel further includes a first voltage line L v1 , a second voltage line L v2 , and at least one first control signal line
  • the first gating circuit 21 includes at least two first switch circuits.
  • the number of the plurality of touch electrodes 22 is m, and m is an integer greater than or equal to 2.
  • the number of the first switch circuits is the same as the number of the touch electrodes 22, and is also m.
  • the m first switch circuits are the first switch circuits S 1 to S m , respectively .
  • the number of the first control signal lines is n
  • the n first control signal lines are the first control signal lines L c1 to L cn , respectively, n being an integer and n ⁇ 1.
  • the first voltage line L v1 is used to input the first voltage VDD, and the first voltage VDD is a high level voltage for forming a touch driving signal.
  • the second voltage line L V2 is used to input the second voltage V com , and the second voltage V com is a low level, which is a common voltage required for displaying a picture.
  • the touch driving signal is a plurality of DC pulse signals, and the voltage of each DC pulse signal is a first voltage VDD, that is, the touch driving signal is formed by a plurality of high-level signals whose voltage is the first voltage VDD. .
  • the first gating circuit 21 includes two first ends, one of the two first ends for providing a touch driving signal and the other for providing a common voltage.
  • Each of the first switching circuits includes a first voltage input terminal u 1 , a second voltage input terminal u 2 , a first output terminal u 3 , and n first control signal input terminals u 41 ⁇ u 4n .
  • the first voltage input terminals u 1 of the m first switch circuits S 1 - S m are connected to be connected to the first voltage line L v1 as a first end of the first gating circuit 21 for providing a touch driving signal, That is, the first voltage input terminals u 1 of the m first switching circuits S 1 to S m are both connected to the first voltage line L v1 .
  • the second voltage input terminals u 2 of the m first switching circuits S 1 -S m are connected to be connected to the second voltage line L v2 as the other first end of the first gating circuit 21, that is, m first switches
  • the second voltage input terminals u 2 of the circuits S 1 to S m are both connected to the second voltage line L v2 .
  • the first output terminal u 3 of each first switching circuit is connected as a second end 212 of the first gating circuit 21 to one end of a wire 23, and the n first control signal inputs of each of the first switching circuits u 41 to u 4n are connected in one-to-one correspondence with the n first control signal lines.
  • the wires connected to the first output terminal u 3 of the different first switching circuits are different.
  • the n first control signal lines L c1 LL cn cn respectively input control signals to the n first control signal input terminals u 41 ⁇ u 4n of each first switch circuit, so that each of the first switches
  • the first output terminal u 3 of the circuit is selectively in communication with the first voltage line L v1 or the second voltage line L v2 , that is, the first output terminal u 3 is selectively coupled to the two first ends of the first gating circuit 21 One of the connections.
  • the first voltage VDD when the first output terminal u 3 is in communication with the first voltage line L v1 , the first voltage VDD is transmitted to a wire 23 connected to the first output terminal u 3 , thereby supplying the first voltage VDD to the wire 23 connected touch electrodes 22.
  • the second voltage V com is transmitted to a wire 23 connected to the first output terminal u 3 , thereby supplying the second voltage V com to the wire 23 connected touch electrodes 22.
  • control signal is further configured such that when one of the first output terminal of the first switch circuit u 3 communicates with a first voltage line L v1, a first output terminal of the other of the first switch circuit and the first voltage u 3 Line L v1 is not connected. Thereby, the first voltage VDD can be sequentially input to the plurality of touch electrodes 22.
  • FIG. 4 is a schematic structural diagram of a first switch circuit in an embodiment of the touch panel of the present invention.
  • each of the first switching circuits includes a first switching unit 41 and a second switching unit 42.
  • the first switching unit 41 includes n first switching elements Q 11 to Q 1n
  • the second switching unit 42 includes n second switching elements Q 21 to Q 2n , n being an integer greater than or equal to 1.
  • n first switching elements Q 11 ⁇ Q 1n are connected in series, and one end of the series branch where the n first switching elements Q 11 ⁇ Q 1n are located is connected to the first voltage input terminal u1 of the first switching circuit, n The other end of the series branch where the first switching elements Q 11 - Q 1n are located is connected to the first output terminal u 3 of the first switching circuit, the control terminals of the n first switching elements Q 11 - Q 1n and the first switching circuit
  • the n first control signal input terminals u 41 to u 4n are connected one by one.
  • a first switching element is connected in series between the first voltage input terminal u 1 and the first output terminal u 3 .
  • n second switching elements Q 21 to Q 2n are connected in parallel. One end of the n second switching elements Q 21 to Q 2n is connected to the first output terminal u 3 of the first switching circuit, and the other ends of the n second switching elements Q 21 to Q 2n are connected to the first switching circuit.
  • the second output terminal u 2 and the control terminals of the n second switching elements Q 21 to Q 2n are connected in one-to-one correspondence with the n first control signal input terminals u 41 to u 4n of the first switching circuit.
  • At least one of the first switching circuits and at least one of the first switching circuits are connected to the same first control signal through the inverter. Input.
  • the control terminals of the first switching element Q 12 and the second switching element Q 22 in the first switching circuit shown in FIG. 4 are connected to the same first control signal input terminal u 42 through an inverter.
  • the control terminals of the first switching element Q 12 and the second switching element Q 22 may be connected to the first control signal input terminal u 42 through different inverters, or may be connected to the same first through the same inverter.
  • Control signal input u 42 Among them, the inverter can be realized by a logic NOT gate.
  • the first switching elements connected to the inverters in the different first switching circuits are different in position in the series branch, and the second switching elements in the different first switching circuits to which the inverters are connected are in parallel n second The positions of the switching elements Q 21 to Q 2n are different.
  • the number of the first switching elements to which the inverters are connected in different first switching circuits may be the same or different, and the number of the second switching elements to which the inverters are connected may be the same or different.
  • the first switching element to which the inverter is connected is the second one of the series branches, and the second switching element to which the inverter is connected is connected in parallel The second of the second switching elements.
  • the first switching element to which the inverter is connected is the first one of the series branches and the second first switching element, and the second switching element to which the inverter is connected is connected in parallel The first of the n second switching elements and the second second switching element. How to select the first switching element and the second switching element to be connected to the inverter will be described in detail later.
  • the control signals respectively driving the first switching element and the second switching element connected to the same first control signal input end have a reciprocal relationship.
  • the reciprocal relationship refers to the opposite of logic.
  • the n first switching elements Q 11 ⁇ Q 1n are PMOS transistors, and the control signal for driving the first switching elements to be turned on is a low level, that is, when the control signal of the control terminal thereof is at a low level, the first switching element In the on state, the first switching element is in an off state when the control signal of its control terminal is at a high level.
  • the n second switching elements Q 21 to Q 2n are NMOS transistors, and the control signal for driving the second switching elements to be turned on is a high level, that is, when the control signal of the control terminal is at a low level, the second switching element is turned off. When the control signal of the control terminal is at a high level, the second switching element is in an on state.
  • the first switching element may also be a P-type triode or other control switch
  • the second switching element may be an N-type triode or other control switch
  • the high level of the signal is represented by a logic "1"
  • the low level of the signal is represented by a logic "0”.
  • m 2 n -1
  • m represents the number of touch electrodes 22, that is, the number of first switch circuits
  • n represents the number of first switch elements in each first switch circuit
  • the second switch The number of components, that is, the number of first control signal lines.
  • the driving signal is controlled, and the m first switching circuits S 1 to S m are controlled to supply a common voltage to the m touch electrodes 22 in the liquid crystal display stage. Therefore, in the embodiment of the present invention, only the number of the first switching element and the second switching element in each of the first switching circuits is set, that is, a different number of touch electrodes 22 can be driven. For example, when the number of the first switching element and the second switching element in each of the first switching circuits is 3, seven touch electrodes 22 can be driven, and only three first control signal lines and one first are needed.
  • a voltage line L v1 and a second voltage line L v2 may be used; when the number of the first switching element and the second switching element in each of the first switching circuits is 5, 31 touch electrodes 22 may be driven, At this time, only five first control signal lines, one first voltage line L v1 , and one second voltage line L v2 are needed.
  • the following describes an example of how the first switch circuit of the embodiment of the present invention implements a touch drive signal and a common voltage required for displaying a touch scan on the touch electrode 22 .
  • FIG. 5 is a schematic structural diagram of an embodiment of a touch panel of the present invention.
  • the number of the first control signal lines is 4, and the four first control signal lines are L c1 ⁇ L c4 .
  • FIG. 6 is a schematic structural diagram of the first switch circuit S 1 in FIG. 5
  • FIG. 7 is a schematic structural diagram of the first switch circuit S 5 in FIG. 5
  • FIG. FIG. 9 is a schematic structural diagram of the first switch circuit S 10 in FIG. 5
  • FIG. 9 is a schematic structural view of the first switch circuit S 15 in FIG. 5
  • the first switching unit 41 of each first switching circuit includes four first switching elements connected in series, which are first switching elements Q 11 ⁇ Q 14 , respectively.
  • the four first switching elements Q 11 to Q 14 are PMOS transistors.
  • the second switching unit 42 of each of the first switching circuits includes four second switching elements in parallel, which are second switching elements Q 21 to Q 24 , respectively.
  • the four second switching elements Q 21 to Q 24 are NMOS transistors.
  • the four first switching elements Q 11 to Q 14 are connected in one-to-one correspondence with the four first control signal input terminals u 41 to u 44 , and the four second switching elements Q 21 to Q 24 and the four first control signal input terminals are connected one by one.
  • each of the first switch circuits is provided with an inverter.
  • the first switching elements of the different first switching circuits to which the inverters are connected are different, and the second switching elements of the different first switching circuits to which the inverters are connected are also different.
  • a first switching circuit S 1 of the first, the fourth switching element Q 14 of the first and fourth control terminal of the second switching element Q in FIG. 24 through an inverter 6 and the fourth section A control signal input terminal u 44 is connected; as shown in FIG.
  • the second first control signal input terminal u 41 is connected, and the control terminals of the third first switching element Q 13 and the third second switching element Q 23 pass through the inverter and the third first control signal input terminal u43 connection;
  • a first switching circuit fifteenth S 15, the four first switching circuit 11 ⁇ Q 14 and four second switches 9 Q Passage control terminal Q 21 ⁇ Q 24 are inverters and four first control signal input terminal u 41 ⁇ u 44 are connected by one to one.
  • the touch scanning phase of the present embodiment is divided into 15 time segments, which are respectively t1 to t15.
  • the following truth table 1 is a logical truth table of control signals received by the four first control signal input terminals u 41 to u 44 of the first switch circuit in each time period in the touch scanning phase, wherein four The control signals received by the control signal input terminals u 41 to u 44 , that is, the control signals input by the four first control signal lines L c1 to L c4 are:
  • the first output terminal u 3 of the first switch circuit S 1 outputs a touch drive signal to a wire 23 connected thereto, and the other first switch circuits S 2 - S 15 are not Outputting a touch driving signal; the first output terminal u 3 of the second switching circuit S 2 outputs a touch driving signal to a wire 23 connected thereto in the time period of t2, and the other first switching circuits S 1 , S 3 ⁇ S 15 No touch drive signals are output, and so on.
  • the first output terminals u 3 of the first switch circuits S 1 to S 15 each output a common voltage.
  • the corresponding control signals are input to the four first control signal lines L c1 ⁇ L c4 in each time period, so that only the first output end u 3 of the first switching circuit can be outputted for each time period. Control the drive signal.
  • a first control signal input terminal u 41 ⁇ u 44 are input control signal is "0", “0", “0”, “1", to select the first touch switch circuits S 1 output Controlling the driving signal, the control signal input by the fourth first control signal input terminal u4 4 is logic "1", so the first switching circuit S 1 is connected with the fourth first control signal input terminal u 44
  • the control terminals of the fourth first switching circuit Q 14 and the fourth second switching circuit Q 24 are connected to the fourth first control signal input terminal u 44 through an inverter.
  • the control signals input by the first control signal input terminals u 41 to u 44 are "0", “0", “1”, and “0", respectively, to select the first switch circuit S 2 to output the touch drive.
  • the signal, at this time, the control signal input by the third first control signal input terminal u 43 is logic "1", so the first switch circuit S 2 is connected to the third first control signal input terminal u 43
  • the control terminals of the three first switching circuits Q 13 and the third second switching circuit Q 23 are connected to the third first control signal input terminal u 43 through an inverter.
  • the control signals input by the first control signal input terminals u 41 to u 44 are “0”, “0”, “1”, “1”, respectively, to select the first switch circuit S 3 to output the touch drive.
  • the signal, at this time, the third first control signal input terminal u 43 and the fourth first control signal input terminal u 44 input a control signal of logic "1", so the first switch circuit S 3 , and the third
  • the third control circuit input terminal u 43 is connected to the third first switch circuit Q 13 and the third second switch circuit Q 23 is connected to the third first control signal input terminal u 43 through the inverter.
  • the control ends of the fourth first switching circuit Q 14 and the fourth second switching circuit Q 24 correspondingly connected to the fourth first control signal input terminal u 44 pass through the inverter and the fourth first control The signal input terminal u 44 is connected.
  • the control signals input by the first control signal input terminals u 41 to u 44 are “0”, “1”, “0”, “0”, respectively, to select the first switch circuit S 4 to output the touch drive.
  • the signal, at this time, the control signal input by the second first control signal input terminal u 42 is logic "1", so the first switch circuit S 4 is connected to the second first control signal input terminal u 42
  • the control terminals of the two first switching circuits Q 12 and the second second switching circuit Q 22 are connected to the second first control signal input terminal u 42 via an inverter.
  • the control signals input by the first control signal input terminals u 41 to u 44 are “0”, “1”, “0”, “1”, respectively, to select the first switch circuit S 5 to output the touch drive.
  • the signal, at this time, the control signal input by the second first control signal input terminal u 42 and the fourth first control signal input terminal u 44 is logic "1", so the first switch circuit S 5 , and the second and a second control terminal of Q 12 Q 22 second switch circuit a first control signal input terminal u 42 corresponding to the first switches connected to a second inverter circuit through a first and a second control signal input terminal 42 is connected to U
  • the control ends of the fourth first switching circuit Q 14 and the fourth second switching circuit Q 24 correspondingly connected to the fourth first control signal input terminal u 44 pass through the inverter and the fourth first control The signal input terminal u 44 is connected.
  • the first switching element and the second switching element that need to be connected to the inverter in the first switching circuits S 6 - S 15 can be similarly outputted, that is, the touch is output in each time period according to the truth table 1 described above.
  • the first switching element and the second switching element corresponding to the first control signal input end of the input control signal being logic "1" are connected with an inverter.
  • the touch control signal or the common electrode can be selectively provided to the touch electrode 22 by selectively connecting the first switch circuit to the inverter, and the touch drive signal can be selectively input to one touch electrode 22 during the touch scan phase.
  • the first first switching circuit S 1 as an example:
  • the control signals input to the four first control signal lines L c1 to L c4 are “0 (low level)”, “0 (low level)”, “0 (low level)”, respectively.
  • “1 (high level)” that is, the control signals received by the four first control signal input terminals u 41 to u 44 of each first switching circuit are “0 (low level)” and “0 (low) respectively.
  • Level) "0 (low level)", “1 (high level)”.
  • the three first control signal input terminals u 41 to u 43 directly transmit the received low level signal to the first switching elements Q 11 to Q 13 and the second switching element Q.
  • the control terminals of 21 to Q 23 , the first switching elements Q 11 to Q 13 are both turned on by the low level control signal, and the second switching elements Q 21 to Q 23 are under the action of the low level control signal. Both are off.
  • the high-level control signal received by the fourth control signal input terminal u 44 becomes a low-level control signal after being subjected to the action of the inverter, and is transmitted to the control of the first switching element Q 14 and the second switching element Q 24 .
  • the first switching element Q 14 is turned on and the second switching element Q 24 is turned off, so that the first voltage VDD is transmitted to the first voltage input terminal of the first switching element S 1 u 1, then through a series of The first switching elements Q 11 -Q 14 are transmitted to the first output terminal u 3 of the first switching circuit S 1 to output the first voltage VDD to the contact of a wire 23 connected to the first switching circuit S 1 in the control electrode 22, thereby providing the touch signal on the touch drive electrode 1 is connected to a first switching circuit S.
  • the four parallel switching elements Q21 - Q24 are all in an off state, so that the second voltage input terminal u 1 of the first switching element S 1 and the first output terminal u 3 of the first switching element S 1 can be cut off. The path between.
  • the first switching circuit S 1 only when the control signals of the four first control signal input terminals u 41 ⁇ u 44 are “0”, “0”, “0”, “1”, respectively,
  • the output terminal u 3 outputs the first voltage VDD, and when the control signal is other control signals, for example, “0”, “0”, “1”, “0”, the first switch circuit S 1 at this time
  • the first switching elements Q 13 and Q 14 are in an off state, so that the transmission path of the first voltage VDD is cut off, and the second switching elements Q 23 and Q 24 in the first switching circuit S1 are in an on state, and the second voltage V is Com is transmitted to the first output terminal u 3 through the second switching element Q 23 or Q 24 , so the first switching circuit S 1 outputs the second voltage V com .
  • the transmission paths of the first voltages VDD of the other first switching circuits S 2 to S 15 are in a cut-off state, for example, the first switching circuits S 5 , S 10 , S shown in FIGS. 7 to 9 . 15 .
  • the control signals at this time are “0”, “0”, “0”, “1”
  • the four first switching elements Q 11 to Q of the first switching circuits S 5 , S 10 , and S 15 At least one of 14 is in an off state, so the series branch is open, so that the transmission path of the first voltage VDD is turned off, and at least one of the four second switching elements Q 21 to Q 24 is in an on state,
  • the second voltage V com can be transmitted to the touch electrode through the turned-on second switching element.
  • the control signals received by the four first control signal input terminals u 41 to u 44 of each first switching circuit are “0 (low level)” and “0 (low level) respectively”. , “1 (high level)”, “0 (low level)”.
  • the control terminals of the first switching element Q 13 and the second switching element Q 23 are connected to the corresponding first control signal input terminal u 43 through the inverter, the other first switching element and the second The switching elements are all directly connected to the corresponding first control signal input terminals, so the control signals of the control ends of the four first switching elements Q 11 ⁇ Q 14 and the four second switching elements Q 21 ⁇ Q 24 are all low level.
  • the four first switching elements Q 11 ⁇ Q 14 are all in an on state, so that the first voltage VDD can be transmitted to one of the wires 23 connected to the first switching circuit S 2 , thereby providing a touch to the corresponding touch electrode 22 .
  • the drive signal is controlled, and the four second switching elements Q 21 to Q 24 are all in an off state.
  • the first output terminal u 3 outputs the first voltage VDD, and the control signal For other control signals, the first output terminal u 3 outputs a second voltage V com .
  • the first switching circuit S 3 outputs the first voltage only when the control signals are "0", “0", “1”, “1”. VDD, while the other control signal outputs a second voltage V com ; and the first switching circuit S 5 outputs the first voltage VDD only when the control signal is "0", “1", "0", “1” And the second voltage V com is outputted in other control signals.
  • the control signal required for each of the first switching circuits to output the first voltage VDD can be obtained from the truth table 1 described above.
  • the touch driving signal is a plurality of DC pulse signals
  • the plurality of DC pulse signals are a plurality of first voltages VDD, that is, in the touch scanning phase, corresponding to the first time in each time period.
  • the touch drive signal output by the switch circuit is a plurality of first voltages VDD.
  • FIG. 10 is a timing chart of operation of the touch panel shown in FIG. 5.
  • the control signal input by the first control signal input terminal u 44 is a pulse wave signal
  • the first control signal input terminals u 41 to u 43 input a low level control signal
  • the control signals input by the four first control signal input terminals u 41 to u 44 are “0”, “0”, “0”, “1”, respectively. Therefore, the first switch circuit S1 outputs a first voltage VDD.
  • the first switch circuits S 1 When the first control signal input terminal u 44 is a low level signal, the control signals input by the four first control signal input terminals u 41 to u 44 are respectively “ 0 ",” 0 ",” 0 ",” 0 ", the first switch circuits S 1 outputs the second voltage V com. Since the first control signal input terminal 44 inputs a control signal u for the alternating high and low pulse signal, correspondingly, a first switching circuit S 1 signal at the output of the time period t1 is also a first voltage VDD And a pulse wave signal alternated with the second voltage V com , thereby obtaining a plurality of DC pulse signals, that is, a plurality of first voltage VDD signals, thereby obtaining a touch driving signal.
  • the touch driving signal output by the first switching circuit corresponding to other time segments can be obtained in the same manner.
  • the touch driving signal may also be a DC pulse signal, that is, in each time period, the touch driving signal corresponding to the output of the first switching circuit is a first voltage VDD signal.
  • the control signal input to the corresponding first control signal input terminal is a DC pulse signal.
  • the control signals input to the four first control signal input terminals u 41 to u 44 may be low level corresponding to the t0 time period in the truth table. Since the control terminals of at least one of the first switching elements and the at least one second switching element of each of the first switching circuits are connected to the corresponding first control signal input through the inverter, when the four first control signals are input
  • the control signals input from the terminals u 41 to u 44 are all low level, and at least one of the four first switching elements Q 11 to Q 14 of each of the first switching circuits is in an off state, so that the four first switching elements Q
  • the series branch of 11 to Q 14 is in an off state, so the transmission path of the first voltage VDD is turned off, and at least one of the four second switching elements Q 21 to Q 24 of each of the first switching circuits is at least The switching element is in an on state, and the second voltage V com can be output to the touch electrode 22 through the turned-on second switching element, thereby providing
  • the touch driving signal can be sequentially provided to the touch electrodes during the touch scanning phase, and the common voltage can be supplied to the touch electrodes during the liquid crystal driving scanning stage, and only A touch driving lead (ie, the first voltage line L v1 ) and a small number of first control signal lines can sequentially provide touch driving signals to the plurality of touch electrodes, for example, four first control signal lines can be Driving 15 touch electrodes, 5 first control signal lines can drive 31 touch electrodes, so the number of leads around the touch panel can be greatly reduced, thereby saving space of the touch panel frame and facilitating the development of narrow frames.
  • the first switching element of the first switching unit 41 of each of the first switching circuits is a PMOS transistor, and the second switching unit 42
  • the second switching element is an NMOS transistor.
  • the inverter may not be provided, but the first switching element of the first switching unit is a combination of different types of transistors, and The second switching element of the two switching units is a combination of different types of transistors, and the control ends of each of the first switching element and the second switching element are directly connected to the corresponding first control signal input end.
  • the first switching elements Q 11 ⁇ Q 13 are all PMOS transistors, and the first switching element Q 14 is an NMOS transistor, and the control end of each first switching element directly corresponds to The first control signal input terminal is connected, and the second switching elements Q 21 ⁇ Q 23 are all NMO tubes, and the second switching element Q 24 is a PMOS tube, and the control end of each second switching element is directly corresponding to the first control The signal input is connected.
  • the first switching elements Q 11 and Q 13 are PMOS transistors
  • the first switching elements Q 12 and Q 14 are NMOS transistors
  • the first switching elements Q 21 and Q 23 Both are NMOS transistors
  • the first switching elements Q 22 and Q 24 are all PMOS transistors. Therefore, unlike the above-described embodiment, it is only necessary to change the transistor type of the first switching element and the second switching element that are required to be connected to the first control signal input end through the inverter through the inverter, such as a connection.
  • the first switching element having the inverter is changed from the PMOS transistor to the NMOS transistor, and the second switching element connected to the inverter is changed from the NMOS transistor to the PMOS transistor, whereby the inverter can be omitted, which is advantageous in cost saving.
  • the first switching element and the five second switching elements drive 31 touch electrodes, and the touch scanning phase is divided into 31 time segments, which can be based on the first output of the touch driving signal in each time period.
  • the input control signal is a first control signal input terminal of logic "1" to determine a first switching element and a second switching element of the corresponding first switching circuit that need to be provided with an inverter.
  • a first gating circuit may be disposed to drive a portion of the touch electrodes in the touch panel.
  • the touch panel includes 26 touch electrodes
  • only the first gating circuit 21 as shown in FIG. 5 may be disposed to input a touch driving signal or a common voltage to the 15 touch electrodes, and the remaining The 11 touch electrodes can input the touch drive signal or the common voltage one by one through the drive leads, and the number of the drive leads can be reduced to some extent, thereby saving the space of the panel frame.
  • the first gate circuit of different structure may be used to drive the touch electrodes in the touch panel, so that one of the first gate circuits drives 15 touch electrodes, and the first gate of another structure is used.
  • the road drives seven touch electrodes, and the remaining four touch electrodes can input corresponding driving signals one by one through the four driving leads.
  • FIG. 11 is a schematic structural view of another embodiment of the touch panel of the present invention, wherein the same reference numerals have the same functions.
  • the touch panel further includes a second gating circuit 21 ′, a third voltage line L v1 ′, a fourth voltage line L v2 ′, and at least one second control signal line, and the second gating circuit 21 ′
  • the system includes two third ends, at least two fourth ends, and at least two second switching circuits. One of the third ends is used to provide a touch drive signal.
  • the number of the second switch circuits is the same as the number of the touch electrodes 22, and is m, and the m second switch circuits are respectively the second switch circuits S 1 ' to S m '.
  • the number of the second control signal lines is the same as the number of the first control signal lines, and is n, and the n second control signal lines are respectively the second control signal lines L c1 ⁇ L cn '.
  • the operation principle of the second gate circuit 21' is the same as that of the first gate circuit 21.
  • the third voltage line L v1 ′ is used to input the first voltage VDD, and the fourth voltage line L V2 ′ is used to input the second voltage V com .
  • each of the second switching circuits includes a third voltage input terminal u 1 ', a fourth voltage input terminal u 2 ', a second output terminal u 3 ', and n second control signal input terminals u 41 ' to u 4n ' .
  • the third voltage input terminal u 1 ' of the m second switching circuits S 1 ' to S m ' is connected to be connected to the third voltage as the third terminal of the second gating circuit 21 ′ for providing the touch driving signal
  • the line L v1 ' that is, the third voltage input terminals u 1 ' of the m second switching circuits S 1 ' to S m ' are all connected to the third voltage line L v1 '.
  • the fourth voltage input terminal u 2 ' of the m second switching circuits S 1 ' to S m ' is connected to be connected to the fourth voltage line L v2 ' as the other third terminal of the second gate circuit 21', that is, The fourth voltage input terminals u 2 ' of the m second switching circuits S 1 ' to S m ' are all connected to the fourth voltage line L v2 '.
  • the second output terminal u 3 ' of each second switching circuit is connected as a fourth end 212' of the second gating circuit 21' to the other end of one of the wires 23, n second of each of the second switching circuits
  • the control signal input terminals u 41 ' to u 4n ' are connected in one-to-one correspondence with the n second control signal lines.
  • the wires connected to the second output terminal u 3 ′ of the different second switching circuits are different.
  • the n second control signal lines L c1 ' to L cn ' respectively input control signals to the n second control signal input terminals u 41 ' to u 4n ' of each second switching circuit, so that each The second output terminal u 3 ' of the second switching circuit is selectively connected to the third voltage line L v1 ′ or the fourth voltage line L v2 ′, that is, the second output terminal u 3 ′ selectively and the second strobe One of the two third ends of the circuit 21' is in communication.
  • the first voltage VDD is transmitted to a wire 23 connected to the second output terminal u 3 ′, so that the first voltage VDD is supplied to The touch electrode 22 is connected to the wire 23.
  • the second output terminal u 3 ′ is in communication with the fourth voltage line L v2 ′, the second voltage V com is transmitted to a wire 23 connected to the second output terminal u 3 ′, so that the second voltage V com is supplied to The touch electrode 22 is connected to the wire 23.
  • control signal is further configured to enable the second output terminal u 3 ′ of the other second switching circuit when the second output terminal u 3 ′ of one of the second switching circuits is in communication with the third voltage line L v1 ′
  • the third voltage line L v1 ' is not connected.
  • the first voltage VDD can be sequentially input to the touch electrode 22.
  • FIG. 12 is a schematic structural diagram of a second switch circuit in an embodiment of the touch panel of the present invention.
  • each of the second switching circuits includes a third switching unit 41' and a fourth switching unit 42'.
  • the third switching unit 41' includes n third switching elements Q 11 ' to Q 1n '
  • the fourth switching unit 42' includes n fourth switching elements Q 21 ' to Q 2n ', n being an integer greater than or equal to 1.
  • n third switching elements Q 11 ′ to Q 1n ′ are connected in series, and one end of the series branch where the n third switching elements Q 11 ′ to Q 1 n ′ are connected to the third voltage input end of the third switching circuit u 1 ', the other end of the series branch where the n third switching elements Q 11 ' to Q 1n ' are connected to the second output terminal u 3 ' of the third switching circuit, n third switching elements Q 11 ' ⁇
  • the control terminal of Q 1n ' is connected in one-to-one correspondence with the n second control signal input terminals u 41 ' to u 4n ' of the third switching circuit.
  • n fourth switching elements Q 21 ' to Q 2n ' are connected in parallel. One end of the n fourth switching elements Q 21 ' to Q 2n ' is connected to the second output terminal u 3 ' of the second switching circuit, and the other ends of the n fourth switching elements Q 21 ' to Q 2n ' are connected to a second output terminal of the second switch circuit u 2 ', n th fourth switching elements Q 21' ⁇ Q 2n 'control terminal of the second switch circuit n second control signal input terminal u 41' ⁇ u 4n ' One-to-one correspondence.
  • At least one of the m second switching circuits, at least one of the third switching elements, and the at least one fourth switching element are connected to the same second control signal through the inverter. Input.
  • the control terminals of the third switching element Q 12 ' and the fourth switching element Q 22 ' in the second switching circuit shown in FIG. 12 are connected to the same second control signal input terminal u 42 through an inverter. '.
  • the control terminals of the third switching element Q 12 ′ and the fourth switching element Q 22 ′ may be connected to the second control signal input terminal u 42 ′ through different inverters, or may be connected to the same inverter through the same inverter.
  • the inverter can be realized by a logic NOT gate.
  • the third switching elements of the different second switching circuits to which the inverters are connected are different in the series branch, and the fourth switching elements of the different second switching circuits to which the inverters are connected are n in parallel.
  • the positions in the switching elements Q 21 ' to Q 2n ' are different.
  • the number of the third switching elements to which the inverters are connected in different second switching circuits may be the same or different, and the number of the fourth switching elements to which the inverters are connected may be the same or different.
  • the third switching element to which the inverter is connected is the second third switching element of the series branch, and the fourth switching element to which the inverter is connected is connected in parallel. The second of the second switching elements.
  • the third switching element to which the inverter is connected is the first one of the series branches and the second third switching element
  • the fourth switching element to which the inverter is connected is connected in parallel The first of the n fourth switching elements and the second fourth switching element.
  • the driving signals respectively driving the third switching element and the fourth switching element connected to the same second control signal input end have a reciprocal relationship.
  • the reciprocal relationship refers to the opposite of logic.
  • the n third switching elements Q 11 ' to Q 1n ' are PMOS transistors, and the control signal for driving the third switching elements to be turned on is a low level, that is, when the control signal of the control terminal is low level, the third The off component is in an on state, and the third switching component is in an off state when the control signal of its control terminal is at a high level.
  • the n fourth switching elements Q 21 ' to Q 2n ' are NMOS transistors, and the control signal for driving the fourth switching elements to be turned on is a high level, that is, when the control signal of the control terminal is at a low level, the fourth switching element is turned off. When the control signal of the control terminal is at a high level, the fourth switching element is in an on state.
  • the first switching element may also be a P-type triode or other control switch
  • the second switching element may be an N-type triode or other control switch
  • the second gating circuit 21 ′ is configured to provide a touch driving signal or a common voltage to the touch electrode 22 from the other end of the wire 23 , thereby passing through the first gating circuit 21 and the second gating circuit 21 ′. At the same time, a touch driving signal or a common voltage is provided to both ends of the wire 23, which can reduce signal attenuation.
  • the principle of the third switching element and the fourth switching element that need to be connected to the inverter in each second switching circuit is determined, and each first is determined in the first gating circuit 21
  • the principle of the first switching element and the second switching element that need to be connected to the inverter in the switching circuit is similar.
  • FIG. 13 is a schematic structural view of a touch panel of the present invention.
  • the components of the same reference numerals have the same function.
  • the first gate circuit 31 is The first switching circuit is implemented by a control unit. Specifically, the first control signal line of the touch panel is one, and the number of the touch electrodes 22 is m.
  • the first gating circuit 31 includes m first switching circuits, m first switching circuits S 1 -S m , wherein the structure of the m first switching circuits and the structure of the first switching circuit of the embodiment shown in FIG. 3 are not the same.
  • Each of the first switching circuits includes a memory unit 51 and a control unit 52 that are connected to each other.
  • the storage unit 51 is provided with a control signal input terminal b 1 to be connected to the first control signal line L c as a first control signal input terminal of the first switching circuit.
  • the control unit 52 is provided with a first voltage input terminal b 2 , a second voltage input terminal b 3 and an output terminal b 4 , and the first voltage input terminal b 2 is connected to the first voltage as the first voltage input terminal of the first switching circuit a line L v1 , the second voltage input terminal b 3 is connected as a second voltage input terminal of the first switch circuit to the second voltage line L v2 , and the output terminal b 4 is connected to the first output end of the first switch circuit One end of the root wire 23.
  • the storage unit 51 is configured to store identification data, and use the identification data to identify each of the first switch circuits, and then select the corresponding first switch circuit to output a touch drive signal or a common voltage to a wire 23 connected thereto.
  • the identification data in each of the first switching circuits is different.
  • the identification data may be a combination of a plurality of binary "0"s and "1"s. For example, a four-digit binary number.
  • the storage unit 51 in each of the first switching circuits stores a set of multi-bit binary numbers, and the control signal line L c inputs a set of multi-bit binary number control signals in each period of the touch scanning phase, and the storage unit 51
  • the received multi-bit binary number is compared with the stored multi-bit binary number, and the comparison result is output to the corresponding control unit 52.
  • the control unit 52 connects the first voltage input terminal b 2 and the output terminal b 4 when the received multi-bit binary number coincides with the stored multi-bit binary number, so that the first voltage VDD is transmitted to the corresponding touch electrode.
  • the second voltage input terminal b 3 and the output terminal b 4 are connected, so that the second voltage V com is transmitted to the corresponding touch electrode.
  • 15 different sets of “0” “1” combinations can be formed, respectively. "0001”, “0010”, “0011”, “0100”, “0101”, “0110”, “0111”, “1000”, “1001”, “1010", “1011”, “1100”, "1101”,”1110”,”1111".
  • the number of first switching circuits is also 15, and 15 sets of four-bit binary numbers are respectively stored in the memory cells 51 in each of the first switching circuits.
  • the touch scanning phase is divided into 15 time segments.
  • the control signal line L c sequentially inputs the above 15 groups of four-bit binary numbers, and each time segment inputs a set of four-digit binary numbers.
  • the storage unit 51 of each first switching circuit compares the received four-bit binary number with the stored four-bit binary number and outputs the comparison result to the control unit 52.
  • the control unit 52 connects the first voltage input terminal b 2 and the output terminal b 4 when the received four-bit binary number coincides with the stored four-digit binary number, so that the first voltage VDD is transmitted to the corresponding touch electrode.
  • the second voltage input terminal b 3 and the output terminal b 4 are connected to each other, so that the second voltage V com is transmitted to the corresponding touch electrode.
  • the first switch circuit S 1 only when the control signal line L c inputs “0001”, the first switch circuit S 1 outputs the first voltage VDD to the touch electrode 22 connected thereto, thereby providing a touch drive signal.
  • the control signal line L c inputs another four-digit binary number
  • the first switch circuit S 1 outputs a second voltage V com to the touch electrode 22 connected thereto .
  • the control signal only when the input line Lc "0010", the first switching circuit S outputs the first voltage VDD touch two pairs of electrodes 22 connected thereto, to provide a touch driving signal, when the control signal line
  • the first switching circuit S 2 outputs a second voltage V com to the touch electrode 22 connected thereto .
  • the output signals of the other first switching circuits are also derived.
  • the first switch circuit of the present embodiment can sequentially input a touch driving signal to the plurality of touch electrodes 22 to implement a touch function, and can also input a common voltage to the plurality of touch electrodes 22 to realize liquid crystal driving. display.
  • the number of signal leads can be greatly reduced, which is advantageous for saving the frame space.
  • the number of binary digits can be increased. For example, a five-digit binary number can drive 31 touch electrodes.

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Abstract

一种触控面板，包括第一选通电路（21）、行列设置的至少两个触控电极（22）和分别连接每个所述触控电极的至少两根导线（23）；所述第一选通电路（21）包括至少一个第一端（211）和至少两个第二端（212），其中一个所述第一端（211）用于提供触控驱动信号，每一所述第二端（212）直接或间接连接一根所述导线（23），用于提供所述触控驱动信号的第一端（211）的数量少于所述第二端（212）的数量，并且用于提供所述触控驱动信号的所述第一端（211）选择性连接所述至少两个第二端（212）中的一个。通过上述方式，能够节省面板边框空间，有利于窄边框化发展。

Description

一种触控面板 【技术领域】
本发明涉及触控技术领域，特别是涉及一种触控面板。
【背景技术】
液晶显示器为目前使用最为广泛的一种平板显示器，已经逐渐成为各种电子设备如移动电话、个人数字助理(PDA)、数字相机、计算机屏幕或笔记本电脑屏幕所广泛应用的具有高分辨率彩色屏幕的显示器。并且，随着液晶显示技术的发展，用户对液晶显示器的显示品质、外观设计、人机界面等提出了更高的要求，触控技术因具有操作方便、坚固耐用、易于交流等优点而成为技术发展的热点。
触控技术主要分为单点触控技术和多点触控技术，单点触控技术只能识别一个触碰点，若同时点击屏幕上的两个点则无法做出正确反应。多点触控技术能把任务分解为两个方面的工作，一是同时采集多点信号，二是对每路信号的意义进行判断，也即所谓的手势识别，从而能够识别人的五个手指同时做的点击、触控动作。多点触控技术能够进一步提升触控屏幕可靠的可用性，满足多种特性丰富的应用需求。
通过互电容触摸屏可以真正实现多点触控。如图1所示，互电容触摸屏主要是在玻璃表面使用ITO制作横向电极11和纵向电极12，每个横向电极11使用Tx驱动引线引出，每个纵向电极12使用Rx感应引线引出。横向电极11和纵向电极12交叉的地方将会形成电容，也即横向电极11和纵向电极12分别构成电容的两极。当手指触摸到触摸屏时，影响了触摸点附近的横向电极11和纵向电极12之间的耦合，从而改变了这两个电极之间的电容量。检测互电容大小时，利用Tx引线对横向电极11依次发出触控驱动信号，所有纵向电极12同时接收信号，并将接收的信号通过Rx引线输出，从而可以得到所有横向电极11和纵向电极12交叉点的电容值大小，即整个触摸屏的二维平面的电容大小。根据触摸屏二维电容变化量数据，可以计算出每一个触摸点的坐标。因此， 屏上即使有多个触摸点，也能计算出每个触摸点的真实坐标，由此可实现多点触控。
然而，如图1所示，现有的触摸屏设计中，每一个横向电极11需要连接一条Tx驱动引线，即横向电极11的数量和Tx驱动引线的数量相同，而Tx驱动引线位于边框位置，大量Tx驱动引线需要更多的空间，不利于窄边框化发展。
【发明内容】
本发明主要解决的技术问题是提供一种触控面板，能够减少用于输入触控驱动信号的驱动引线的数量，有利于窄边框化发展。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种触控面板，其中，包括：第一选通电路、行列设置的至少两个触控电极和分别连接每个所述触控电极的至少两根导线；所述第一选通电路包括两个第一端和至少两个第二端，其中一个所述第一端用于提供触控驱动信号，每一所述第二端直接或间接连接一根所述导线，用于提供所述触控驱动信号的第一端的数量少于所述第二端的数量，并且用于提供所述触控驱动信号的所述第一端选择性连接所述至少两个第二端中的一个；其中，所述触控面板进一步包括第一电压线、第二电压线以及至少一条第一控制信号线，所述第一选通电路包括至少两个第一开关电路；所述第一电压线用于输入第一电压，所述第一电压用以形成所述触控驱动信号，所述第二电压线用于输入第二电压；每个所述第一开关电路包括第一电压输入端、第二电压输入端、第一输出端以及至少一个第一控制信号输入端，所述至少两个第一开关电路的第一电压输入端相连以作为所述第一选通电路的用于提供所述触控驱动信号的第一端而连接至所述第一电压线，所述至少两个第一开关电路的第二电压输入端相连以作为所述第一选通电路的另一个第一端而连接至所述第二电压线，每个所述第一开关电路的第一输出端作为所述第一选通电路的一个第二端连接至一根所述导线的一端，不同第一开关电路的第一输出端连接的导线不相同，每个所述第一开关电路的所述至少一个第一控制信号输入端与所 述至少一条第一控制信号线一一对应连接；所述第一控制信号线用以对所述第一控制信号输入端输入控制信号，以使得每个所述第一开关电路的第一输出端选择性与所述第一电压线或所述第二电压线连通，并使得在其中一个所述第一开关电路的第一输出端与所述第一电压线连通时，其他所述第一开关电路的第一输出端与所述第一电压线不连通；所述触控电极同时作为触控面板的公共电极。
其中，每个所述第一开关电路包括第一开关单元和第二开关单元；所述第一开关单元包括至少一个第一开关元件，所述至少一个第一开关元件串联，所述至少一个第一开关元件所在的串联支路的一端连接至所述第一开关电路的第一电压输入端，所述至少一个第一开关元件所在的串联支路的另一端连接至所述第一开关电路的第一输出端，所述至少一个第一开关元件的控制端与所述第一开关电路的至少一个第一控制信号输入端一一对应连接；所述第二开关单元包括至少一个第二开关元件，所述至少一个第二开关元件并联，所述至少一个第二开关元件的一端均连接至所述第一开关电路的第一输出端，所述至少一个第二开关元件的另一端均连接至所述第一开关电路的第二电压输入端，所述至少一个第二开关元件的控制端与所述第一开关电路的至少一个第一控制信号输入端一一对应连接；其中，分别驱动连接同一个第一控制信号输入端的第一开关元件和第二开关元件导通的控制信号具有互逆关系，至少其中一个所述第一开关电路中的至少一个第一开关元件和至少一个第二开关元件通过反相器连接至同一个第一控制信号输入端，不同第一开关电路中连接有反相器的第一开关元件在所述串联支路中的位置不相同，不同第一开关电路中连接有反相器的第二开关元件在并联的第二开关元件中的位置不相同。
其中，所述触控电极的数量和所述第一开关电路的数量相同，均为m，所述第一控制信号线、每个所述第一开关电路的第一控制信号输入端、每个所述第一开关电路的第一开关元件以及每个所述第一开关电路的第二开关元件的数量相同，均为n，其中，m和n具有如下关系：m＝2n-1，n为整数且n≥1。
其中，所述至少一个第一开关元件均为PMOS管，所述至少一个第二开关元件均为NMOS管。
其中，所述触控面板进一步还包括第二选通电路、第三电压线、第四电压线和至少一条第二控制信号线，所述第二选通电路包括两个第三端、至少两个第四端以及至少两个第二开关电路，其中一个所述第三端用于提供所述触控驱动信号；所述第三电压线用于输入所述第一电压，所述第四电压线用以输入所述第二电压；每个所述第二开关电路包括第三电压输入端、第四电压输入端、第二输出端以及至少一个第二控制信号输入端，所述至少两个第二开关电路的第三电压输入端相连以作为所述第二选通电路的用于提供所述触控驱动信号的第三端而连接至所述第三电压线，所述至少两个第二开关电路的第四电压输入端相连以作为所述第二选通电路的另一个第三端而连接至所述第四电压线，每个所述第二开关电路的所述第二输出端作为所述第二选通电路的一个第四端连接至一根所述导线的另一端，不同第二开关电路的第二输出端连接的导线不同，每个所述第二开关电路的所述至少一个第二控制信号输入端与所述至少一条第二控制信号线一一对应连接；所述第二控制信号线用以对所述第二控制信号输入端输入控制信号，以使得每个所述第二开关电路的第二输出端选择性与所述第三电压线或所述第四电压线连通，并使得在其中一个所述第二开关电路的第一输出端与所述第三电压线连通时，其他所述第二开关电路的第二输出端与所述第三电压线不连通。
其中，每个所述第二开关电路包括第三开关单元和第四开关单元；所述第三开关单元包括至少一个第三开关元件，所述至少一个第三开关元件串联，所述至少一个第三开关元件所在的串联支路的一端连接至所述第二开关电路的第三电压输入端，所述至少一个第三开关元件所在的串联支路的另一端连接至所述第二开关电路的第二输出端，所述至少一个第三开关元件的控制端与所述第二开关电路的至少一个第二控制信号输入端一一对应连接；所述第四开关单元包括至少一个第四开关元件，所述至少一个第四开关元件并联，所述至少一个第四开关元件的一端均连接至所述第二开关电路的第二输出端，所述至少一个第四开关元 件的另一端均连接至所述第二开关电路的第四电压输入端，所述至少一个第四开关元件的控制端与所述第二开关电路的至少一个第二控制信号输入端一一对应连接；其中，分别驱动连接同一个第二控制信号输入端的第三开关元件和第四开关元件导通的控制信号具有互逆关系，至少其中一个所述第二开关电路中的至少一个第三开关元件和至少一个第四开关元件通过反相器连接至同一个第一控制信号输入端，不同第二开关电路中连接有反相器的第三开关元件在所述串联支路中的位置不相同，不同第二开关电路中连接有反相器的第四开关元件在并联的第四开关元件中的位置不相同。
其中，所述触控电极的数量和所述第二开关电路的数量相同，均为m，所述第二控制信号线的数量为n，每个所述第二开关电路的第二控制信号输入端、每个所述第二开关电路的第三开关元件以及每个所述第二开关电路的第四开关元件的数量也均为n，其中，m和n具有如下关系：m＝2n-1，n为整数且n≥1。
其中，所述至少一个第三开关元件均为PMOS管，所述至少一个第四开关元件均为NMOS管。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种触控面板，包括：第一选通电路、行列设置的至少两个触控电极和分别连接每个所述触控电极的至少两根导线；所述第一选通电路包括至少一个第一端和至少两个第二端，其中一个所述第一端用于提供触控驱动信号，每一所述第二端直接或间接连接一根所述导线，用于提供所述触控驱动信号的第一端的数量少于所述第二端的数量，并且用于提供所述触控驱动信号的所述第一端选择性连接所述至少两个第二端中的一个。
其中，所述触控面板进一步包括第一电压线、第二电压线以及至少一条第一控制信号线，所述第一选通电路包括至少两个第一开关电路，且所述第一选通电路包括两个第一端，其中一个所述第一端用于提供所述触控驱动信号；所述第一电压线用于输入第一电压，所述第一电压用以形成所述触控驱动信号，所述第二电压线用于输入第二电压；每个所述第一开关电路包括第一电压输入端、第二电压输入端、第一输出端以 及至少一个第一控制信号输入端，所述至少两个第一开关电路的第一电压输入端相连以作为所述第一选通电路的用于提供所述触控驱动信号的第一端而连接至所述第一电压线，所述至少两个第一开关电路的第二电压输入端相连以作为所述第一选通电路的另一个第一端而连接至所述第二电压线，每个所述第一开关电路的第一输出端作为所述第一选通电路的一个第二端连接至一根所述导线的一端，不同第一开关电路的第一输出端连接的导线不相同，每个所述第一开关电路的所述至少一个第一控制信号输入端与所述至少一条第一控制信号线一一对应连接；所述第一控制信号线用以对所述第一控制信号输入端输入控制信号，以使得每个所述第一开关电路的第一输出端选择性与所述第一电压线或所述第二电压线连通，并使得在其中一个所述第一开关电路的第一输出端与所述第一电压线连通时，其他所述第一开关电路的第一输出端与所述第一电压线不连通。
其中，每个所述第一开关电路包括第一开关单元和第二开关单元；所述第一开关单元包括至少一个第一开关元件，所述至少一个第一开关元件串联，所述至少一个第一开关元件所在的串联支路的一端连接至所述第一开关电路的第一电压输入端，所述至少一个第一开关元件所在的串联支路的另一端连接至所述第一开关电路的第一输出端，所述至少一个第一开关元件的控制端与所述第一开关电路的至少一个第一控制信号输入端一一对应连接；所述第二开关单元包括至少一个第二开关元件，所述至少一个第二开关元件并联，所述至少一个第二开关元件的一端均连接至所述第一开关电路的第一输出端，所述至少一个第二开关元件的另一端均连接至所述第一开关电路的第二电压输入端，所述至少一个第二开关元件的控制端与所述第一开关电路的至少一个第一控制信号输入端一一对应连接；其中，分别驱动连接同一个第一控制信号输入端的第一开关元件和第二开关元件导通的控制信号具有互逆关系，至少其中一个所述第一开关电路中的至少一个第一开关元件和至少一个第二开关元件通过反相器连接至同一个第一控制信号输入端，不同第一开关电路中连接有反相器的第一开关元件在所述串联支路中的位置不相 同，不同第一开关电路中连接有反相器的第二开关元件在并联的第二开关元件中的位置不相同。
其中，所述触控电极的数量和所述第一开关电路的数量相同，均为m，所述第一控制信号线、每个所述第一开关电路的第一控制信号输入端、每个所述第一开关电路的第一开关元件以及每个所述第一开关电路的第二开关元件的数量相同，均为n，其中，m和n具有如下关系：m＝2n-1，n为整数且n≥1。
其中，所述至少一个第一开关元件均为PMOS管，所述至少一个第二开关元件均为NMOS管。
其中，所述触控面板进一步还包括第二选通电路、第三电压线、第四电压线和至少一条第二控制信号线，所述第二选通电路包括两个第三端、至少两个第四端以及至少两个第二开关电路，其中一个所述第三端用于提供所述触控驱动信号；所述第三电压线用于输入所述第一电压，所述第四电压线用以输入所述第二电压；每个所述第二开关电路包括第三电压输入端、第四电压输入端、第二输出端以及至少一个第二控制信号输入端，所述至少两个第二开关电路的第三电压输入端相连以作为所述第二选通电路的用于提供所述触控驱动信号的第三端而连接至所述第三电压线，所述至少两个第二开关电路的第四电压输入端相连以作为所述第二选通电路的另一个第三端而连接至所述第四电压线，每个所述第二开关电路的所述第二输出端作为所述第二选通电路的一个第四端连接至一根所述导线的另一端，不同第二开关电路的第二输出端连接的导线不同，每个所述第二开关电路的所述至少一个第二控制信号输入端与所述至少一条第二控制信号线一一对应连接；所述第二控制信号线用以对所述第二控制信号输入端输入控制信号，以使得每个所述第二开关电路的第二输出端选择性与所述第三电压线或所述第四电压线连通，并使得在其中一个所述第二开关电路的第一输出端与所述第三电压线连通时，其他所述第二开关电路的第二输出端与所述第三电压线不连通。
其中，每个所述第二开关电路包括第三开关单元和第四开关单元；所述第三开关单元包括至少一个第三开关元件，所述至少一个第三开关 元件串联，所述至少一个第三开关元件所在的串联支路的一端连接至所述第二开关电路的第三电压输入端，所述至少一个第三开关元件所在的串联支路的另一端连接至所述第二开关电路的第二输出端，所述至少一个第三开关元件的控制端与所述第二开关电路的至少一个第二控制信号输入端一一对应连接；所述第四开关单元包括至少一个第四开关元件，所述至少一个第四开关元件并联，所述至少一个第四开关元件的一端均连接至所述第二开关电路的第二输出端，所述至少一个第四开关元件的另一端均连接至所述第二开关电路的第四电压输入端，所述至少一个第四开关元件的控制端与所述第二开关电路的至少一个第二控制信号输入端一一对应连接；其中，分别驱动连接同一个第二控制信号输入端的第三开关元件和第四开关元件导通的控制信号具有互逆关系，至少其中一个所述第二开关电路中的至少一个第三开关元件和至少一个第四开关元件通过反相器连接至同一个第一控制信号输入端，不同第二开关电路中连接有反相器的第三开关元件在所述串联支路中的位置不相同，不同第二开关电路中连接有反相器的第四开关元件在并联的第四开关元件中的位置不相同。
其中，所述触控电极的数量和所述第二开关电路的数量相同，均为m，所述第二控制信号线的数量为n，每个所述第二开关电路的第二控制信号输入端、每个所述第二开关电路的第三开关元件以及每个所述第二开关电路的第四开关元件的数量也均为n，其中，m和n具有如下关系：m＝2n-1，n为整数且n≥1。
其中，所述至少一个第三开关元件均为PMOS管，所述至少一个第四开关元件均为NMOS管。
其中，所述触控电极同时作为触控面板的公共电极。
本发明的有益效果是：区别于现有技术的情况，本发明的触控面板中，每一触控电极与一根导线连接，第一选通电路包括用于提供触控驱动信号的第一端和至少两个第二端，其中每一第二端连接一根导线，用于提供触控驱动信号的第一端选择性连接其中一个第二端，由此可将触控驱动信号选择性通过一个第二端输出至与触控电极所连接的导线，从 而可以将触控驱动信号分别提供给触控电极，以实现触控面板的触控功能，并且用于提供触控驱动信号的第一端的数量少于第二端，即用于提供触控驱动信号的第一端的数量少于触控电极的数量，因此用于对触控电极输入触控驱动信号的引线的数量可以少于触控电极的数量，因此与现有技术相比，可以减少用于输入触控驱动信号的引线的数量，有利于窄边框发展。
【附图说明】
图1是现有技术一种触控面板的结构示意图；
图2是本发明触控面板一实施方式的结构示意图；
图3是本发明触控面板另一实施方式的结构示意图；
图4是图3所示的触控面板中，其中一个第一开关电路的结构示意图；
图5是本发明触控面板一实施方式的具体结构示意图；
图6是图5所示的触控面板中，第一开关电路S1的结构示意图；
图7是图5所示的触控面板中，第一开关电路S5的结构示意图；
图8是图5所示的触控面板中，第一开关电路S10的结构示意图；
图9是图5所示的触控面板中，第一开关电路S15的结构示意图；
图10是图5所示的触控面板的工作时序图；
图11是本发明触控面板另一实施方式的结构示意图；
图12是图11所示的触控面板中，其中一个第一开关电路的结构示意图；
图13是本发明触控面板又一实施方式的结构示意图。
【具体实施方式】
下面将结合附图和实施方式对本发明进行详细说明。
参阅图2，在本发明触控面板一实施方式中，触控面板包括第一选通电路21、行列设置的至少两个触控电极22和分别连接每个触控电极22的至少两根导线23。
其中，第一选通电路21包括至少一个第一端211和至少两个第二端212。其中一个第一端211用于提供触控驱动信号，且用于提供触控驱动信号的第一端211的数量少于第二端212的数量。每一第二端212直接连接一根导线23从而与一个触控电极22连接。用于提供触控驱动信号的第一端211选择性连接至少两个第二端212中的一个，由此可使得用于提供触控驱动信号的第一端21选择性连接至少两个触控电极22中的一个，因此触控驱动信号21可通过第一端21输入，然后通过与第一端21连接的一个第二端212传输至对应的一个触控电极22。
其中，本领域技术人员可以理解的是，第一选通电路21可以采用多路复用器实现，或者采用二选一开关实现。
通过本发明实施方式，利用第一选通电路21使用于输入触控驱动信号的第一端211选择性连接触控电极22中的一个，由此能够对触控电极22逐个输入所需的触控驱动信号，以实现触控功能。因此，本实施方式，只需一个第一端211即可实现对至少两个触控电极22逐个输入出触控驱动信号，也即只需一条驱动引线即可实现对两个触控电极22逐个输入各自所需的触控驱动信号，因此与现有的每个触控电极22需要对应的一根驱动引线单独输入触控驱动信号的方式相比，能够减少驱动引线的数量，从而可以节省驱动引线所占用的空间，有利于触控面板的窄边框化发展。
参阅图3，在本发明触控面板的一种实施方式中，触控面板为液晶显示面板。触控电极22有多个，多个触控电极22沿行方向延伸，并沿列方向依次排列。每根导线23对应连接一个触控电极22，且不同触控电极22连接的导线23不同。其中，每个触控电极22包括多个沿行方向依次排列的触控单元221，多个触控单元221通过与本触控电极22对应的一根导线23连接在一起。导线23包括相对的两端。当然，在另一种实施方式中，每个触控电极也可以是一个整体的长条形状触控电极。
其中，触控面板还包括多个感应电极24，多个触控电极22和多个感应电极24相互交叉重叠。其中，本实施方式的触控电极22同时作为公共电极。在触控面板的驱动过程中，包括液晶驱动阶段和触控扫描阶 段，液晶驱动阶段用以实现画面显示，触控扫描阶段用于触控扫描以实现触控功能。其中，触控扫描可以是一帧画面显示之后下一帧画面显示前的时间段里完成，也可以是在进行一帧画面的显示扫描过程中同时进行触控扫描，例如完成一帧画面的前半部分的显示扫描后，在对一帧画面的后半部分进行显示扫描的同时，对一帧画面的前半部分对应的触控电极进行触控扫描。
其中，在液晶驱动阶段触控电极22作为公共电极用以输入公共电压，在触控扫描阶段触控电极22用以输入触控驱动信号以实现触控功能。
其中，触控面板进一步还包括第一电压线Lv1、第二电压线Lv2和至少一条第一控制信号线，第一选通电路21包括至少两个第一开关电路。其中，设多个触控电极22的数量为m，m为大于或等于2的整数，第一开关电路的数量和触控电极22的数量相同，也为m。其中，m个第一开关电路分别是第一开关电路S1～Sm。此外，设第一控制信号线的数量为n，n条第一控制信号线分别为第一控制信号线Lc1～Lcn，n为整数且n≥1。
其中，m和n具有如下关系：m＝2n-1。
其中，第一电压线Lv1用于输入第一电压VDD，第一电压VDD为高电平电压，用以形成触控驱动信号。第二电压线LV2用以输入第二电压Vcom，第二电压Vcom为低电平，为显示画面所需的公共电压。本实施方式中，触控驱动信号为多个直流脉冲信号，每个直流脉冲信号的电压为第一电压VDD，即触控驱动信号由多个电压大小为第一电压VDD的高电平信号形成。
其中，第一选通电路21包括两个第一端，两个第一端中的其中一个用于提供触控驱动信号，另一个用于提供公共电压。其中，每个第一开关电路包括第一电压输入端u1、第二电压输入端u2、第一输出端u3和n个第一控制信号输入端u41～u4n。m个第一开关电路S1～Sm的第一电压输入端u1相连以作为第一选通电路21的用于提供触控驱动信号的第一端而连接至第一电压线Lv1，即m个第一开关电路S1～Sm的第一电压 输入端u1均连接至第一电压线Lv1。m个第一开关电路S1～Sm的第二电压输入端u2相连以作为第一选通电路21的另一个第一端而连接至第二电压线Lv2，即m个第一开关电路S1～Sm的第二电压输入端u2均连接至第二电压线Lv2。每个第一开关电路的第一输出端u3作为第一选通电路21的一个第二端212连接至一根导线23的一端，每个第一开关电路的n个第一控制信号输入端u41～u4n与n条第一控制信号线一一对应连接。其中，不同第一开关电路的第一输出端u3连接的导线不相同。
本实施方式中，n条第一控制信号线Lc1～Lcn分别对每个第一开关电路的n个第一控制信号输入端u41～u4n输入控制信号，以使得每个第一开关电路的第一输出端u3选择性与第一电压线Lv1或第二电压线Lv2连通，也即使得第一输出端u3选择性与第一选通电路21的两个第一端中的一个连通。其中，当第一输出端u3与第一电压线Lv1连通时，第一电压VDD传输至与第一输出端u3连接的一根导线23，从而将第一电压VDD提供给与该导线23连接的触控电极22。当第一输出端u3与第二电压线Lv2连通时，第二电压Vcom传输至与第一输出端u3连接的一根导线23，从而将第二电压Vcom提供给与该导线23连接的触控电极22。
并且，所述控制信号还用以使得在其中一个第一开关电路的第一输出端u3与第一电压线Lv1连通时，其他第一开关电路的第一输出端u3与第一电压线Lv1不连通。由此，可以将第一电压VDD依次输入至多个触控电极22中。
进一步地，结合图4，图4是本发明触控面板一实施方式中，其中一个第一开关电路的结构示意图。本实施方式中，每个第一开关电路包括第一开关单元41和第二开关单元42。第一开关单元41包括n个第一开关元件Q11～Q1n，第二开关单元42包括n个第二开关元件Q21～Q2n，n为大于等于1的整数。
其中，n个第一开关元件Q11～Q1n串联，且n个第一开关元件Q11～Q1n所在的串联支路的一端连接至第一开关电路的第一电压输入端u1，n个第一开关元件Q11～Q1n所在的串联支路的另一端连接至第一开关电路的第一输出端u3，n个第一开关元件Q11～Q1n的控制端与第一开关电路的n 个第一控制信号输入端u41～u4n一一对应连接。其中，当仅有一个第一开关元件时，一个第一开关元件是以串联的形式连接在第一电压输入端u1和第一输出端u3之间。
其中，n个第二开关元件Q21～Q2n并联。n个第二开关元件Q21～Q2n的一端均连接至第一开关电路的第一输出端u3，n个第二开关元件Q21～Q2n的另一端均连接至第一开关电路的第二输出端u2，n个第二开关元件Q21～Q2n的控制端与第一开关电路的n个第一控制信号输入端u41～u4n一一对应连接。
其中，在本发明实施方式中，m个第一开关电路中至少有一个第一开关电路中的至少一个第一开关元件和至少一个第二开关元件通过反相器连接至同一个第一控制信号输入端。如图4所示，图4所示的第一开关电路中第一开关元件Q12和第二开关元件Q22的控制端通过反相器连接至同一个第一控制信号输入端u42。其中，第一开关元件Q12和第二开关元件Q22的控制端可以通过不同的反相器连接至第一控制信号输入端u42，也可以通过同一个反相器连接至同一个第一控制信号输入端u42。其中，反相器可以通过一个逻辑非门实现。
此外，不同第一开关电路中连接有反相器的第一开关元件在串联支路中的位置不同，不同第一开关电路中连接有反相器的第二开关元件在并联的n个第二开关元件Q21～Q2n中的位置不相同。并且，不同第一开关电路中连接有反相器的第一开关元件的数量可以相同也可以不相同，以及连接有反相器的第二开关元件的数量可以相同也可以不相同。如图4所示的第一开关电路中，连接有反相器的第一开关元件为串联支路中的第二个第一开关元件，连接有反相器的第二开关元件为并联的n个第二开关元件中的第二个第二开关元件。而在另一个第一开关电路中，连接有反相器的第一开关元件为串联支路中的第一个和第二个第一开关元件，连接有反相器的第二开关元件为并联的n个第二开关元件中的第一个和第二个第二开关元件。后面将详细介绍如何选择需接入反相器的第一开关元件和第二开关元件。
其中，分别驱动连接同一个第一控制信号输入端的第一开关元件和 第二开关元件导通的控制信号具有互逆关系。所述互逆关系是指逻辑相反。本实施方式中，n个第一开关元件Q11～Q1n为PMOS管，驱动第一开关元件导通的控制信号为低电平，即当其控制端的控制信号为低电平时第一开关元件为导通状态，当其控制端的控制信号为高电平时第一开关元件为截止状态。n个第二开关元件Q21～Q2n为NMOS管，驱动第二开关元件导通的控制信号为高电平，即当其控制端的控制信号为低电平时第二开关元件为截止状态，当其控制端的控制信号为高电平时第二开关元件为导通状态。
当然，在其他实施方式中，第一开关元件也可以是P型三极管或其他控制开关，而第二开关元件可以是N型三极管或其他控制开关。
其中，信号的高电平用逻辑“1”表示，信号的低电平用逻辑“0”表示。本实施方式中，m＝2n-1，m表示触控电极22的数量，也即第一开关电路的数量，n表示每个第一开关电路中的第一开关元件的数量、第二开关元件的数量，也即第一控制信号线的数量。通过n条第一控制信号线Lc1～Lcn所输入的n个控制信号，在触控扫描阶段可以控制m个第一开关电路S1～Sm依次对m个触控电极22提供触控驱动信号，并在液晶显示阶段控制m个第一开关电路S1～Sm对m个触控电极22提供公共电压。因此，本发明实施方式中，只需设置每个第一开关电路中的第一开关元件和第二开关元件的数量，即可以对不同数量的触控电极22进行驱动。例如，当每个第一开关电路中的第一开关元件和第二开关元件的数量均为3时，可以驱动7个触控电极22，此时只需3条第一控制信号线、一条第一电压线Lv1、一条第二电压线Lv2即可；当每个第一开关电路中的第一开关元件和第二开关元件的数量均为5时，可以驱动31个触控电极22，此时只需5条第一控制信号线、一条第一电压线Lv1、一条第二电压线Lv2即可。
下面通过举例说明通过本发明实施方式的第一开关电路如何实现对触控电极22施加触控扫描所需的触控驱动信号和显示画面所需的公共电压。
参阅图5，图5是本发明触控面板一实施方式的具体结构示意图。 在本实施方式中，触控电极22和第一开关电路的数量均为15个，即m＝15，15个第一开关电路为S1～S15。第一控制信号线的数量为4，4条第一控制信号线为Lc1～Lc4。
参阅图6～图9，并结合图5，图6为图5中的第一开关电路S1的结构示意图，图7为图5中的第一开关电路S5的结构示意图，图8为图5中的第一开关电路S10的结构示意图，图9为图5中的第一开关电路S15的结构示意图。其中，每个第一开关电路的第一开关单元41包括串联的4个第一开关元件，分别为第一开关元件Q11～Q14。4个第一开关元件Q11～Q14为PMOS管。每个第一开关电路的第二开关单元42包括并联的4个第二开关元件，分别为第二开关元件Q21～Q24。4个第二开关元件Q21～Q24为NMOS管。4个第一开关元件Q11～Q14与4个第一控制信号输入端u41～u44一一对应连接，4个第二开关元件Q21～Q24与4个第一控制信号输入端u41～u44一一对应连接，即第一开关元件Q11和第二开关元件Q21的控制端连接至第一控制信号输入端u41，第一开关元件Q12和第二开关元件Q22的控制端连接至第一控制信号输入端u42，依此类推。
其中，每个第一开关电路均设置有反相器。不同第一开关电路中连接有反相器的第一开关元件不相同，且不同第一开关电路中连接有反相器的第二开关元件也不相同。例如，如图6所示，第一个第一开关电路S1中，第四个第一开关元件Q14和第四个第二开关元件Q24的控制端通过反相器与第四个第一控制信号输入端u44连接；如图7所示，第五个第一开关电路S5中，第二个第一开关电路Q12和第二个第二开关电路Q22的控制端通过反相器与第二第一控制信号输入端u42连接，且第四个第一开关元件Q14和第四个第二开关元件Q24的控制端通过反相器与第四个第一控制信号输入端u44连接；如图8所示，第十个第一开关电路S10中，第一个第一开关电路Q11和第一个第二开关电路Q21的控制端通过反相器与第二第一控制信号输入端u41连接，且第三个第一开关元件Q13和第三个第二开关元件Q23的控制端通过反相器与第三个第一控制信号输入端u43连接；如图9所示，第十五个第一开关电路S15中，四个第一开关电路Q11～Q14和四个第二开关电路Q21～Q24的控制端均通过反 相器与四个第一控制信号输入端u41～u44一一对应连接。
以上仅例举出四个第一开关电路中连接有反相器的第一开关元件和第二开关元件，而15个第一开关电路中反相器的设置情况可以根据如下真值表1进行设置。
本实施方式的触控扫描阶段划分为15个时间段，分别为t1～t15。如下真值表1为触控扫描阶段中每个时间段里第一开关电路的4个第一控制信号输入端u41～u44接收到的控制信号的逻辑真值表，其中，4个第一控制信号输入端u41～u44接收到的控制信号也即4条第一控制信号线Lc1～Lc4输入的控制信号：
时间段 第一开关电路 u41 u42 u43 u44 u3
t1 S1 0 0 0 1 1
t2 S2 0 0 1 0 1
t3 S3 0 0 1 1 1
t4 S4 0 1 0 0 1
t5 S5 0 1 0 1 1
t6 S6 0 1 1 0 1
t7 S7 0 1 1 1 1
t8 S8 1 0 0 0 1
t9 S9 1 0 0 1 1
t10 S10 1 0 1 0 1
t11 S11 1 0 1 1 1
t12 S12 1 1 0 0 1
t13 S13 1 1 0 1 1
t14 S14 1 1 1 0 1
t15 S15 1 1 1 1 1
t0 S1～S15 0 0 0 0 0
触控扫描阶段的控制信号的逻辑真值表1
如上表1所示，其中“0”表示低电平，“1”表示高电平。根据上述真值表1，t1时间段里第一开关电路S1的第一输出端u3对与其连接的一根导线23输出触控驱动信号，其他第一开关电路S2～S15均不输出触控驱动信号；t2时间段里第二开关电路S2的第一输出端u3对与其连接的一根导线23输出触控驱动信号，其他第一开关电路S1、S3～S15均不输出触控驱动信号，依此类推。在完成触控扫描后，进入液晶驱动显示阶 段t0时间段时，第一开关电路S1～S15的第一输出端u3均输出公共电压。
因此，在每个时间段里对4条第一控制信号线Lc1～Lc4输入对应的控制信号，由此可使得每个时间段只有一个第一开关电路的第一输出端u3输出触控驱动信号。
其中，t1时间段里，第一控制信号输入端u41～u44输入的控制信号分别为“0”、“0”、“0”、“1”，以选择第一开关电路S1输出触控驱动信号，此时第四个第一控制信号输入端u44输入的控制信号为逻辑“1”，因此第一开关电路S1中，与第四个第一控制信号输入端u44对应连接的第四个第一开关电路Q14和第四个第二开关电路Q24的控制端通过反相器与第四个第一控制信号输入端u44连接。
t2时间段里，第一控制信号输入端u41～u44输入的控制信号分别为“0”、“0”、“1”、“0”，以选择第一开关电路S2输出触控驱动信号，此时第三个第一控制信号输入端u43输入的控制信号为逻辑“1”，因此第一开关电路S2中，与第三个第一控制信号输入端u43对应连接的第三个第一开关电路Q13和第三个第二开关电路Q23的控制端通过反相器与第三个第一控制信号输入端u43连接。
t3时间段里，第一控制信号输入端u41～u44输入的控制信号分别为“0”、“0”、“1”、“1”，以选择第一开关电路S3输出触控驱动信号，此时第三个第一控制信号输入端u43和第四个第一控制信号输入端u44输入的控制信号为逻辑“1”，因此第一开关电路S3中，与第三个第一控制信号输入端u43对应连接的第三个第一开关电路Q13和第三个第二开关电路Q23的控制端通过反相器与第三个第一控制信号输入端u43连接，且与第四个第一控制信号输入端u44对应连接的第四个第一开关电路Q14和第四个第二开关电路Q24的控制端通过反相器与第四个第一控制信号输入端u44连接。
t4时间段里，第一控制信号输入端u41～u44输入的控制信号分别为“0”、“1”、“0”、“0”，以选择第一开关电路S4输出触控驱动信号，此时第二个第一控制信号输入端u42输入的控制信号为逻辑“1”，因此第一开关电路S4中，与第二个第一控制信号输入端u42对应连接的第二个 第一开关电路Q12和第二个第二开关电路Q22的控制端通过反相器与第二个第一控制信号输入端u42连接。
t5时间段里，第一控制信号输入端u41～u44输入的控制信号分别为“0”、“1”、“0”、“1”，以选择第一开关电路S5输出触控驱动信号，此时第二个第一控制信号输入端u42和第四个第一控制信号输入端u44输入的控制信号为逻辑“1”，因此第一开关电路S5中，与第二个第一控制信号输入端u42对应连接的第二个第一开关电路Q12和第二个第二开关电路Q22的控制端通过反相器与第二个第一控制信号输入端u42连接，且与第四个第一控制信号输入端u44对应连接的第四个第一开关电路Q14和第四个第二开关电路Q24的控制端通过反相器与第四个第一控制信号输入端u44连接。
由此，可依此类推第一开关电路S6～S15中需要连接反相器的第一开关元件和第二开关元件，即根据上述真值表1，在每个时间段里输出触控驱动信号的第一开关电路中，输入控制信号为逻辑“1”的第一控制信号输入端对应连接的第一开关元件和第二开关元件连接有反相器。
通过对不同第一开关电路接入反相器，可以选择性对触控电极22提供触控驱动信号或者公共电极，以及在触控扫描阶段选择性对一个触控电极22输入触控驱动信号。以第一个第一开关电路S1为例：
在t1时间段，4条第一控制信号线Lc1～Lc4输入的控制信号分别为“0(低电平)”、“0(低电平)”、“0(低电平)”、“1(高电平)”，即每个第一开关电路的4个第一控制信号输入端u41～u44接收到的控制信号分别为“0(低电平)”、“0(低电平)”、“0(低电平)”、“1(高电平)”。
此时，对于第一开关电路S1，其3个第一控制信号输入端u41～u43将接收到的低电平信号直接传输至第一开关元件Q11～Q13和第二开关元件Q21～Q23的控制端，第一开关元件Q11～Q13在低电平控制信号的作用下均为导通状态，第二开关元件Q21～Q23在低电平控制信号的作用下均为截止状态。而第四控制信号输入端u44接收到的高电平控制信号在经过反相器的作用后变为低电平控制信号而传输至第一开关元件Q14和第二开关元件Q24的控制端，由此使得第一开关元件Q14导通，而第二开关 元件Q24断开，从而第一电压VDD传输至第一开关元件S1的第一电压输入端u1，然后经过串联的第一开关元件Q11～Q14传输至第一开关电路S1的第一输出端u3，以将第一电压VDD输出至与第一开关电路S1连接的一根导线23所连接的触控电极22中，从而对与第一开关电路S1连接的触控电极提供触控驱动信号。而四个并联的第二开关元件Q21～Q24均处于断开状态，因此可以截断第一开关元件S1的第二电压输入端u1和第一开关元件S1的第一输出端u3之间的通路。
因此，对于第一开关电路S1，只有在4个第一控制信号输入端u41～u44的控制信号分别为“0”、“0”、“0”、“1”时，其第一输出端u3才会输出第一电压VDD，而在控制信号为其他控制信号时，例如“0”、“0”、“1”、“0”时，此时第一开关电路S1中的第一开关元件Q13和Q14为截止状态，因此第一电压VDD的传输通路被截断，而第一开关电路S1中的第二开关元件Q23和Q24为导通状态，第二电压Vcom通过第二开关元件Q23或Q24传输至第一输出端u3，因此第一开关电路S1输出的是第二电压Vcom。
并且，在t1时间段里，其他第一开关电路S2～S15的第一电压VDD的传输通路处于截断状态，例如图7～图9所示的第一开关电路S5、S10、S15，由于此时的控制信号为“0”、“0”、“0”、“1”，因此第一开关电路S5、S10、S15中的4个第一开关元件Q11～Q14中至少有一个为截止状态，因此串联支路为断路，从而使得第一电压VDD的传输通路断开，而4个第二开关元件Q21～Q24中至少有一个为导通状态，因此第二电压Vcom可以通过导通的第二开关元件传输至触控电极。
在t2时间段里，每个第一开关电路的4个第一控制信号输入端u41～u44接收到的控制信号分别为“0(低电平)”、“0(低电平)”、“1(高电平)”、“0(低电平)”。对于第一开关电路S2，其第一开关元件Q13和第二开关元件Q23的控制端通过反相器连接至对应的第一控制信号输入端u43，其他第一开关元件和第二开关元件均直接连接至对应的第一控制信号输入端，因此四个第一开关元件Q11～Q14和四个第二开关元件Q21～Q24的控制端的控制信号均为低电平，因此四个第一开关元件Q11～Q14均处于导通状态，从而第一电压VDD可以传输至第一开关电路 S2所连接的一根导线23，从而对对应的触控电极22提供触控驱动信号，而四个第二开关元件Q21～Q24均处于截止状态。
因此，对于第一开关电路S2，只有在控制信号为“0”、“0”、“1”、“0”时其第一输出端u3才会输出第一电压VDD，而在控制信号为其他控制信号时其第一输出端u3均输出第二电压Vcom。
对于其他第一开关电路S3～S15，可以依此类推，例如第一开关电路S3只有在控制信号为“0”、“0”、“1”、“1”时才输出第一电压VDD，而在其他控制信号时均输出第二电压Vcom；而第一开关电路S5只有在控制信号为“0”、“1”、“0”、“1”时才输出第一电压VDD，而在其他控制信号时均输出第二电压Vcom。每个第一开关电路输出第一电压VDD所需的控制信号可从上述真值表1中获得。
此外，在本发明实施方式中，触控驱动信号为多个直流脉冲信号，该多个直流脉冲信号为多个第一电压VDD，即在触控扫描阶段里，每个时间段中对应第一开关电路输出的触控驱动信号为多个第一电压VDD。
仍以图5所示的实施例进行说明。参阅图10，图10是图5所示的触控面板的工作时序图。如图10所示，在t1时间段里，第一控制信号输入端u44输入的控制信号为脉冲波信号，第一控制信号输入端u41～u43输入低电平的控制信号，其中，当第一控制信号输入端u44为高电平信号时，四个第一控制信号输入端u41～u44输入的控制信号分别为“0”、“0”、“0”、“1”，因此第一开关电路S1输出一个第一电压VDD，当第一控制信号输入端u44为低电平信号时，四个第一控制信号输入端u41～u44输入的控制信号分别为“0”、“0”、“0”、“0”，第一开关电路S1输出第二电压Vcom。由于第一控制信号输入端u44输入的控制信号为高电平和低电平交替的脉冲波信号，因此对应地，第一开关电路S1在t1时间段里输出的信号也为第一电压VDD和第二电压Vcom交替的脉冲波信号，由此可得到多个直流脉冲信号，即多个第一电压VDD信号，从而得到触控驱动信号。
同理，可依此类推得到其他时间段对应的第一开关电路所输出的触控驱动信号。
当然，在本发明的其他实施方式中，触控驱动信号也可以是一个直流脉冲信号，即在每个时间段里，对应第一开关电路输出的触控驱动信号为一个第一电压VDD信号，此时对应的第一控制信号输入端输入的控制信号为一个直流脉冲信号。
在完成触控扫描后，当进行液晶驱动扫描时，对应于上述真值表中的t0时间段，可以使四个第一控制信号输入端u41～u44输入的控制信号均为低电平，由于每个第一开关电路中至少有一个第一开关元件和至少一个第二开关元件的控制端通过反相器连接至对应的第一控制信号输入端，因此当四个第一控制信号输入端u41～u44输入的控制信号均为低电平，每个第一开关电路的四个第一开关元件Q11～Q14中至少有一个处于截止状态，使得四个第一开关元件Q11～Q14所在的串联支路处于断开状态，因此第一电压VDD的传输通路断开，而每个第一开关电路的四个第二开关元件Q21～Q24中至少有一个第二开关元件处于导通状态，第二电压Vcom可以通过导通的第二开关元件输出至触控电极22，从而对触控电极22提供公共电压。
通过本发明实施方式，利用第一选通电路21，可以在触控扫描阶段依次对触控电极提供触控驱动信号，并且在液晶驱动扫描阶段，可以对触控电极提供公共电压，并且只需一根触控驱动引线(即第一电压线Lv1)以及较少数量的第一控制信号线即可实现对多个触控电极依次提供触控驱动信号，例如4条第一控制信号线可以驱动15个触控电极，5条第一控制信号线可以驱动31个触控电极，因此可以大大降低触控面板周边引线的数量，从而能够节省触控面板边框的空间，有利于窄边框发展。
在上述实施方式中，通过设置反相器以控制每个第一开关电路的输出，每个第一开关电路的第一开关单元41中的第一开关元件均为PMOS管，第二开关单元42中的第二开关元件均为NMOS管，在另一种实施方式中，也可以不设置反相器，而是使第一开关单元中的第一开关元件为不同类型晶体管的组合，以及使第二开关单元中的第二开关元件为不同类型晶体管的组合，每个第一开关元件和第二开关元件的控制端均直接与对应的第一控制信号输入端连接。例如，对于第一开关电路S1，其 第一开关元件Q11～Q13均为PMOS管，而第一开关元件Q14则为NMOS管，每个第一开关元件的控制端直接与对应的第一控制信号输入端连接，而第二开关元件Q21～Q23均为NMO管，而第二开关元件Q24则为PMOS管，每个第二开关元件的控制端直接与对应第一控制信号输入端连接。又如，对于第一开关电路S5，其第一开关元件Q11和Q13均为PMOS管，第一开关元件Q12和Q14均为NMOS管，而第一开关元件Q21和Q23均为NMOS管，而第一开关元件Q22和Q24均为PMOS管。因此，与上述是实施方式不同的是，只需将上述实施方式中需要通过反相器连接对应第一控制信号输入端的第一开关元件和第二开关元件的晶体管类型进行变更即可，如连接有反相器的第一开关元件由PMOS管变为NMOS管，连接有反相器的第二开关元件由NMOS管变为PMOS管，由此即可省去反相器，有利于节省成本。
图5所示的实施方式中仅是例举了15个触控电极22的情况，当有更多触控电极22时，可以根据触控电极的数量m和每个第一开关电路中的第一开关元件、第二开关元件的数量n(也即第一控制信号线的数量)的关系式m＝2n-1来设置第一选通电路21，例如每个第一开关电路可以利用5个第一开关元件、5个第二开关元件来驱动31个触控电极，此时触控扫描阶段将划分为31个时间段，可以根据在每个时间段里输出触控驱动信号的第一开关电路中，输入控制信号为逻辑“1”的第一控制信号输入端来确定相应第一开关电路中需要设置反相器的第一开关元件和第二开关元件。
在本发明触控面板的另一种实施方式中，可以设置第一选通电路来驱动触控面板中的部分触控电极。例如，当触控面板包括26个触控电极时，可以仅设置如图5所示的第一选通电路21来对其中的15个触控电极输入触控驱动信号或公共电压，而剩余的11个触控电极可以通过11跟驱动引线一一输入触控驱动信号或公共电压，通过此种方式可以在一定程度上减少驱动引线的数量，节省面板边框的空间。或者可以采用不同结构的第一选通电路来驱动触控面板中的触控电极，使其中一个第一选通电路对15个触控电极进行驱动，采用另一种结构的第一选通电 路对7个触控电极进行驱动，而剩余的4个触控电极可以通过4跟驱动引线一一输入相应的驱动信号。
参阅图11，图11是本发明触控面板另一实施方式的结构示意图，图中相同标号的元件作用相同。在本实施方式中，触控面板进一步包括第二选通电路21’、第三电压线Lv1’、第四电压线Lv2’和至少一条第二控制信号线，第二选通电路21’包括两个第三端、至少两个第四端以及至少两个第二开关电路。其中一个第三端用于提供触控驱动信号。其中，第二开关电路的数量与触控电极22的数量相同，均为m，m个第二开关电路分别是第二开关电路S1’～Sm’。此外，第二控制信号线的数量和第一控制信号线的数量相同，均为n，n条第二控制信号线分别为第二控制信号线Lc1’～Lcn’。
其中，m和n具有如下关系：m＝2n-1。
本实施方式中，第二选通电路21’的工作原理和第一选通电路21的工作原理相同。
其中，第三电压线Lv1’用于输入第一电压VDD，第四电压线LV2’用以输入第二电压Vcom。
其中，每个第二开关电路包括第三电压输入端u1’、第四电压输入端u2’、第二输出端u3’和n个第二控制信号输入端u41’～u4n’。m个第二开关电路S1’～Sm’的第三电压输入端u1’相连以作为第二选通电路21’的用于提供触控驱动信号的第三端而连接至第三电压线Lv1’，即m个第二开关电路S1’～Sm’的第三电压输入端u1’均连接至第三电压线Lv1’。m个第二开关电路S1’～Sm’的第四电压输入端u2’相连以作为第二选通电路21’的另一个第三端而连接至第四电压线Lv2’，即m个第二开关电路S1’～Sm’的第四电压输入端u2’均连接至第四电压线Lv2’。每个第二开关电路的第二输出端u3’作为第二选通电路21’的一个第四端212’连接至一根导线23的另一端，每个第二开关电路的n个第二控制信号输入端u41’～u4n’与n条第二控制信号线一一对应连接。其中，不同第二开关电路的第二输出端u3’连接的导线不相同。
本实施方式中，n条第二控制信号线Lc1’～Lcn’分别对每个第二开关 电路的n个第二控制信号输入端u41’～u4n’输入控制信号，以使得每个第二开关电路的第二输出端u3’选择性与第三电压线Lv1’或第四电压线Lv2’连通，也即使得第二输出端u3’选择性与第二选通电路21’的两个第三端中的一个连通。其中，当第二输出端u3’与第三电压线Lv1’连通时，第一电压VDD传输至与第二输出端u3’连接的一根导线23，从而使得第一电压VDD提供给与该导线23连接的触控电极22。当第二输出端u3’与第四电压线Lv2’连通时，第二电压Vcom传输至与第二输出端u3’连接的一根导线23，从而使得第二电压Vcom提供给与该导线23连接的触控电极22。
并且，所述控制信号还用以使得在其中一个第二开关电路的第二输出端u3’与第三电压线Lv1’连通时，其他第二开关电路的第二输出端u3’与第三电压线Lv1’不连通。由此，可以将第一电压VDD依次输入至触控电极22中。
进一步地，结合图12，图12是本发明触控面板一实施方式中，其中一个第二开关电路的结构示意图。本实施方式中，每个第二开关电路包括第三开关单元41’和第四开关单元42’。第三开关单元41’包括n个第三开关元件Q11’～Q1n’，第四开关单元42’包括n个第四开关元件Q21’～Q2n’，n为大于等于1的整数。
其中，n个第三开关元件Q11’～Q1n’串联，且n个第三开关元件Q11’～Q1n’所在的串联支路的一端连接至第三开关电路的第三电压输入端u1’，n个第三开关元件Q11’～Q1n’所在的串联支路的另一端连接至第三开关电路的第二输出端u3’，n个第三开关元件Q11’～Q1n’的控制端与第三开关电路的n个第二控制信号输入端u41’～u4n’一一对应连接。
其中，n个第四开关元件Q21’～Q2n’并联。n个第四开关元件Q21’～Q2n’的一端均连接至第二开关电路的第二输出端u3’，n个第四开关元件Q21’～Q2n’的另一端均连接至第二开关电路的第二输出端u2’，n个第四开关元件Q21’～Q2n’的控制端与第二开关电路的n个第二控制信号输入端u41’～u4n’一一对应连接。
其中，在本发明实施方式中，m个第二开关电路中至少有一个第二 开关电路中的至少一个第三开关元件和至少一个第四开关元件通过反相器连接至同一个第二控制信号输入端。如图12所示，图12所示的第二开关电路中第三开关元件Q12’和第四开关元件Q22’的控制端通过反相器连接至同一个第二控制信号输入端u42’。其中，第三开关元件Q12’和第四开关元件Q22’的控制端可以通过不同的反相器连接至第二控制信号输入端u42’，也可以通过同一个反相器连接至同一个第二控制信号输入端u42’。其中，反相器可以通过一个逻辑非门实现。
此外，不同第二开关电路中连接有反相器的第三开关元件在串联支路中的位置不同，不同第二开关电路中连接有反相器的第四开关元件在并联的n个第四开关元件Q21’～Q2n’中的位置不相同。并且，不同第二开关电路中连接有反相器的第三开关元件的数量可以相同也可以不相同，以及连接有反相器的第四开关元件的数量可以相同也可以不相同。如图12所示的第二开关电路中，连接有反相器的第三开关元件为串联支路中的第二个第三开关元件，连接有反相器的第四开关元件为并联的n个第二开关元件中的第二个第四开关元件。而在另一个第二开关电路中，连接有反相器的第三开关元件为串联支路中的第一个和第二个第三开关元件，连接有反相器的第四开关元件为并联的n个第四开关元件中的第一个和第二个第四开关元件。
其中，分别驱动连接同一个第二控制信号输入端的第三开关元件和第四开关元件导通的控制信号具有互逆关系。所述互逆关系是指逻辑相反。本实施方式中，n个第三开关元件Q11’～Q1n’为PMOS管，驱动第三开关元件导通的控制信号为低电平，即当其控制端的控制信号为低电平时第三关元件为导通状态，当其控制端的控制信号为高电平时第三开关元件为截止状态。n个第四开关元件Q21’～Q2n’为NMOS管，驱动第四开关元件导通的控制信号为高电平，即当其控制端的控制信号为低电平时第四开关元件为截止状态，当其控制端的控制信号为高电平时第四开关元件为导通状态。
当然，在其他实施方式中，第一开关元件也可以是P型三极管或其他控制开关，而第二开关元件可以是N型三极管或其他控制开关。
本实施方式中，第二选通电路21’用于从导线23的另一端对触控电极22提供触控驱动信号或公共电压，从而通过第一选通电路21和第二选通电路21’同时对导线23的两端提供触控驱动信号或公共电压，可以减少信号衰减。其中，第二选通电路21’中确定每个第二开关电路中需要接入反相器的第三开关元件和第四开关元件的原理，与第一选通电路21中确定每个第一开关电路中需要接入反相器的第一开关元件和第二开关元件的原理相类似，具体可参考图5所示实施例中确定不同第一开关电路中需要接入反相器的第一开关元件和第二开关元件的原理过程，此外第二选通电路21’的控制方式与第一选通电路21的控制方式也相类似，出于简洁的目的在此不进行一一赘述。
参阅图13，图13为本发明触控面板又一实施方式的结构示意图，图中相同标号的元件作用相同，在本发明触控电极的又一种实施方式中，第一选通电路31中的第一开关电路通过控制单元来实现。具体地，触控面板的第一控制信号线为一条，触控电极22的数量为m。第一选通电路31包括m个第一开关电路，m个第一开关电路S1～Sm，其中m个第一开关电路的结构与图3所示实施例的第一开关电路的结构不相同。每个第一开关电路包括相互连接的存储单元51和控制单元52。存储单元51设置有控制信号输入端b1，以作为第一开关电路的第一控制信号输入端而连接至第一控制信号线Lc。控制单元52设置有第一电压输入端b2、第二电压输入端b3和输出端b4，第一电压输入端b2作为第一开关电路的第一电压输入端而连接至第一电压线Lv1，第二电压输入端b3作为第一开关电路的第二电压输入端而连接至第二电压线Lv2，输出端b4作为第一开关电路的第一输出端而连接至一根导线23的一端。
其中，存储单元51用于存储标识数据，利用该标识数据以识别每个第一开关电路，进而可以选择相应第一开关电路对与其连接的一根导线23输出触控驱动信号或公共电压。每个第一开关电路中的标识数据不相同。
其中，标识数据可以是一组多位二进制“0”和“1”的组合。例如为四位二进制数。
每个第一开关电路中的存储单元51存储一组多位二进制数，控制信号线Lc在触控扫描阶段的每个时间段里输入一组多位二进制数的控制信号，存储单元51将接收到的多位二进制数与存储的多位二进制数进行比较，并将比较结果输出给对应的控制单元52。控制单元52在接收到的多位二进制数与存储的多位二进制数相一致时，使第一电压输入端b2和输出端b4连通，从而使得第一电压VDD传输至对应的触控电极；当接收到的多位二进制数与存储的多位二进制数不一致时，使第二电压输入端b3和输出端b4连通，从而使得第二电压Vcom传输至对应的触控电极。
其中，触控电极的数量m和标识数据的位数x的关系为：m＝2x-1，其中x为大于或等于2的整数。以m＝15为例，触控电极的数量为15，此时标识数据为一组四位二进制数，即x＝4，此时可以形成15组不同的“0”个“1”组合，分别为“0001”，“0010”、“0011”、“0100”、“0101”、“0110”、“0111”、“1000”、“1001”、“1010”、“1011”、“1100”、“1101”、“1110”、“1111”。第一开关电路的数量也为15，15组四位二进制数分别存储于每个第一开关电路中的存储单元51中。
将触控扫描阶段划分为15个时间段，在15个时间段里控制信号线Lc依次输入上述15组四位二进制数，每个时间段输入一组四位二进制数。每个第一开关电路的存储单元51将接收到的四位二进制数与存储的四位二进制数进行比较，并将比较结果输出给控制单元52。控制单元52在接收到的四位二进制数与存储的四位二进制数相一致时，使第一电压输入端b2和输出端b4连通，从而使得第一电压VDD传输至对应的触控电极；当接收到的四位二进制数与存储的四位二进制数不一致时，使第二电压输入端b3和输出端b4连通，从而使得第二电压Vcom传输至对应的触控电极。
因此，对于第一开关电路S1，只有当控制信号线Lc输入“0001”时第一开关电路S1对与其连接的触控电极22输出第一电压VDD，从而提供触控驱动信号，当控制信号线Lc输入其他四位二进制数时，第一开关电路S1对与其连接的触控电极22输出第二电压Vcom。对于第二开关电 路S2，只有当控制信号线Lc输入“0010”时，第一开关电路S2对与其连接的触控电极22输出第一电压VDD，从而提供触控驱动信号，当控制信号线Lc输入其他四位二进制数时，第一开关电路S2对与其连接的触控电极22输出第二电压Vcom。依此类推其他第一开关电路的输出信号。
而当控制信号线Lc输入“0000”时，所有第一开关电路S1～S15均输出第二电压Vcom。
因此，通过本实施方式的第一开关电路，可以依次对多个触控电极22输入触控驱动信号，从而实现触控功能，也可以对多个触控电极22输入公共电压，从而实现液晶驱动显示。通过上述方式，可以大大减少信号引线的数量，有利于节省边框空间。
其中，当需要驱动更多触控电极时，可以增加二进制的位数，例如五位二进制数可以驱动31个触控电极。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (18)

  1. 一种触控面板，其中，包括：
    第一选通电路、行列设置的至少两个触控电极和分别连接每个所述触控电极的至少两根导线；
    所述第一选通电路包括两个第一端和至少两个第二端，其中一个所述第一端用于提供触控驱动信号，每一所述第二端直接或间接连接一根所述导线，用于提供所述触控驱动信号的第一端的数量少于所述第二端的数量，并且用于提供所述触控驱动信号的所述第一端选择性连接所述至少两个第二端中的一个；
    其中，所述触控面板进一步包括第一电压线、第二电压线以及至少一条第一控制信号线，所述第一选通电路包括至少两个第一开关电路；
    所述第一电压线用于输入第一电压，所述第一电压用以形成所述触控驱动信号，所述第二电压线用于输入第二电压；
    每个所述第一开关电路包括第一电压输入端、第二电压输入端、第一输出端以及至少一个第一控制信号输入端，所述至少两个第一开关电路的第一电压输入端相连以作为所述第一选通电路的用于提供所述触控驱动信号的第一端而连接至所述第一电压线，所述至少两个第一开关电路的第二电压输入端相连以作为所述第一选通电路的另一个第一端而连接至所述第二电压线，每个所述第一开关电路的第一输出端作为所述第一选通电路的一个第二端连接至一根所述导线的一端，不同第一开关电路的第一输出端连接的导线不相同，每个所述第一开关电路的所述至少一个第一控制信号输入端与所述至少一条第一控制信号线一一对应连接；
    所述第一控制信号线用以对所述第一控制信号输入端输入控制信号，以使得每个所述第一开关电路的第一输出端选择性与所述第一电压线或所述第二电压线连通，并使得在其中一个所述第一开关电路的第一输出端与所述第一电压线连通时，其他所述第一开关电路的第一输出端与所述第一电压线不连通；
    所述触控电极同时作为触控面板的公共电极。
  2. 根据权利要求1所述的触控面板，其中，每个所述第一开关电路包括第一开关单元和第二开关单元；
    所述第一开关单元包括至少一个第一开关元件，所述至少一个第一开关元 件串联，所述至少一个第一开关元件所在的串联支路的一端连接至所述第一开关电路的第一电压输入端，所述至少一个第一开关元件所在的串联支路的另一端连接至所述第一开关电路的第一输出端，所述至少一个第一开关元件的控制端与所述第一开关电路的至少一个第一控制信号输入端一一对应连接；
    所述第二开关单元包括至少一个第二开关元件，所述至少一个第二开关元件并联，所述至少一个第二开关元件的一端均连接至所述第一开关电路的第一输出端，所述至少一个第二开关元件的另一端均连接至所述第一开关电路的第二电压输入端，所述至少一个第二开关元件的控制端与所述第一开关电路的至少一个第一控制信号输入端一一对应连接；
    其中，分别驱动连接同一个第一控制信号输入端的第一开关元件和第二开关元件导通的控制信号具有互逆关系，至少其中一个所述第一开关电路中的至少一个第一开关元件和至少一个第二开关元件通过反相器连接至同一个第一控制信号输入端，不同第一开关电路中连接有反相器的第一开关元件在所述串联支路中的位置不相同，不同第一开关电路中连接有反相器的第二开关元件在并联的第二开关元件中的位置不相同。
  3. 根据权利要求2所述的触控面板，其中，所述触控电极的数量和所述第一开关电路的数量相同，均为m，所述第一控制信号线、每个所述第一开关电路的第一控制信号输入端、每个所述第一开关电路的第一开关元件以及每个所述第一开关电路的第二开关元件的数量相同，均为n，其中，m和n具有如下关系：m＝2n-1，n为整数且n≥1。
  4. 根据权利要求2所述的触控面板，其中，所述至少一个第一开关元件均为PMOS管，所述至少一个第二开关元件均为NMOS管。
  5. 根据权利要求1所述的触控面板，其中，所述触控面板进一步还包括第二选通电路、第三电压线、第四电压线和至少一条第二控制信号线，所述第二选通电路包括两个第三端、至少两个第四端以及至少两个第二开关电路，其中一个所述第三端用于提供所述触控驱动信号；
    所述第三电压线用于输入所述第一电压，所述第四电压线用以输入所述第二电压；
    每个所述第二开关电路包括第三电压输入端、第四电压输入端、第二输出端以及至少一个第二控制信号输入端，所述至少两个第二开关电路的第三电压输入端相连以作为所述第二选通电路的用于提供所述触控驱动信号的第三端而 连接至所述第三电压线，所述至少两个第二开关电路的第四电压输入端相连以作为所述第二选通电路的另一个第三端而连接至所述第四电压线，每个所述第二开关电路的所述第二输出端作为所述第二选通电路的一个第四端连接至一根所述导线的另一端，不同第二开关电路的第二输出端连接的导线不同，每个所述第二开关电路的所述至少一个第二控制信号输入端与所述至少一条第二控制信号线一一对应连接；
    所述第二控制信号线用以对所述第二控制信号输入端输入控制信号，以使得每个所述第二开关电路的第二输出端选择性与所述第三电压线或所述第四电压线连通，并使得在其中一个所述第二开关电路的第一输出端与所述第三电压线连通时，其他所述第二开关电路的第二输出端与所述第三电压线不连通。
  6. 根据权利要求5所述的触控面板，其中，每个所述第二开关电路包括第三开关单元和第四开关单元；
    所述第三开关单元包括至少一个第三开关元件，所述至少一个第三开关元件串联，所述至少一个第三开关元件所在的串联支路的一端连接至所述第二开关电路的第三电压输入端，所述至少一个第三开关元件所在的串联支路的另一端连接至所述第二开关电路的第二输出端，所述至少一个第三开关元件的控制端与所述第二开关电路的至少一个第二控制信号输入端一一对应连接；
    所述第四开关单元包括至少一个第四开关元件，所述至少一个第四开关元件并联，所述至少一个第四开关元件的一端均连接至所述第二开关电路的第二输出端，所述至少一个第四开关元件的另一端均连接至所述第二开关电路的第四电压输入端，所述至少一个第四开关元件的控制端与所述第二开关电路的至少一个第二控制信号输入端一一对应连接；
    其中，分别驱动连接同一个第二控制信号输入端的第三开关元件和第四开关元件导通的控制信号具有互逆关系，至少其中一个所述第二开关电路中的至少一个第三开关元件和至少一个第四开关元件通过反相器连接至同一个第一控制信号输入端，不同第二开关电路中连接有反相器的第三开关元件在所述串联支路中的位置不相同，不同第二开关电路中连接有反相器的第四开关元件在并联的第四开关元件中的位置不相同。
  7. 根据权利要求6所述的触控面板，其中，所述触控电极的数量和所述第二开关电路的数量相同，均为m，所述第二控制信号线的数量为n，每个所述第二开关电路的第二控制信号输入端、每个所述第二开关电路的第三开关元件以及 每个所述第二开关电路的第四开关元件的数量也均为n，其中，m和n具有如下关系：m＝2n-1，n为整数且n≥1。
  8. 根据权利要求6所述的触控面板，其中，所述至少一个第三开关元件均为PMOS管，所述至少一个第四开关元件均为NMOS管。
  9. 一种触控面板，其中，包括：
    第一选通电路、行列设置的至少两个触控电极和分别连接每个所述触控电极的至少两根导线；
    所述第一选通电路包括至少一个第一端和至少两个第二端，其中一个所述第一端用于提供触控驱动信号，每一所述第二端直接或间接连接一根所述导线，用于提供所述触控驱动信号的第一端的数量少于所述第二端的数量，并且用于提供所述触控驱动信号的所述第一端选择性连接所述至少两个第二端中的一个。
  10. 根据权利要求9所述的触控面板，其中，所述触控面板进一步包括第一电压线、第二电压线以及至少一条第一控制信号线，所述第一选通电路包括至少两个第一开关电路，且所述第一选通电路包括两个第一端，其中一个所述第一端用于提供所述触控驱动信号；
    所述第一电压线用于输入第一电压，所述第一电压用以形成所述触控驱动信号，所述第二电压线用于输入第二电压；
    每个所述第一开关电路包括第一电压输入端、第二电压输入端、第一输出端以及至少一个第一控制信号输入端，所述至少两个第一开关电路的第一电压输入端相连以作为所述第一选通电路的用于提供所述触控驱动信号的第一端而连接至所述第一电压线，所述至少两个第一开关电路的第二电压输入端相连以作为所述第一选通电路的另一个第一端而连接至所述第二电压线，每个所述第一开关电路的第一输出端作为所述第一选通电路的一个第二端连接至一根所述导线的一端，不同第一开关电路的第一输出端连接的导线不相同，每个所述第一开关电路的所述至少一个第一控制信号输入端与所述至少一条第一控制信号线一一对应连接；
    所述第一控制信号线用以对所述第一控制信号输入端输入控制信号，以使得每个所述第一开关电路的第一输出端选择性与所述第一电压线或所述第二电压线连通，并使得在其中一个所述第一开关电路的第一输出端与所述第一电压线连通时，其他所述第一开关电路的第一输出端与所述第一电压线不连通。
  11. 根据权利要求10所述的触控面板，其中，每个所述第一开关电路包括第一开关单元和第二开关单元；
    所述第一开关单元包括至少一个第一开关元件，所述至少一个第一开关元件串联，所述至少一个第一开关元件所在的串联支路的一端连接至所述第一开关电路的第一电压输入端，所述至少一个第一开关元件所在的串联支路的另一端连接至所述第一开关电路的第一输出端，所述至少一个第一开关元件的控制端与所述第一开关电路的至少一个第一控制信号输入端一一对应连接；
    所述第二开关单元包括至少一个第二开关元件，所述至少一个第二开关元件并联，所述至少一个第二开关元件的一端均连接至所述第一开关电路的第一输出端，所述至少一个第二开关元件的另一端均连接至所述第一开关电路的第二电压输入端，所述至少一个第二开关元件的控制端与所述第一开关电路的至少一个第一控制信号输入端一一对应连接；
    其中，分别驱动连接同一个第一控制信号输入端的第一开关元件和第二开关元件导通的控制信号具有互逆关系，至少其中一个所述第一开关电路中的至少一个第一开关元件和至少一个第二开关元件通过反相器连接至同一个第一控制信号输入端，不同第一开关电路中连接有反相器的第一开关元件在所述串联支路中的位置不相同，不同第一开关电路中连接有反相器的第二开关元件在并联的第二开关元件中的位置不相同。
  12. 根据权利要求11所述的触控面板，其中，所述触控电极的数量和所述第一开关电路的数量相同，均为m，所述第一控制信号线、每个所述第一开关电路的第一控制信号输入端、每个所述第一开关电路的第一开关元件以及每个所述第一开关电路的第二开关元件的数量相同，均为n，其中，m和n具有如下关系：m＝2n-1，n为整数且n≥1。
  13. 根据权利要求11所述的触控面板，其中，所述至少一个第一开关元件均为PMOS管，所述至少一个第二开关元件均为NMOS管。
  14. 根据权利要求10所述的触控面板，其中，所述触控面板进一步还包括第二选通电路、第三电压线、第四电压线和至少一条第二控制信号线，所述第二选通电路包括两个第三端、至少两个第四端以及至少两个第二开关电路，其中一个所述第三端用于提供所述触控驱动信号；
    所述第三电压线用于输入所述第一电压，所述第四电压线用以输入所述第二电压；
    每个所述第二开关电路包括第三电压输入端、第四电压输入端、第二输出端以及至少一个第二控制信号输入端，所述至少两个第二开关电路的第三电压输入端相连以作为所述第二选通电路的用于提供所述触控驱动信号的第三端而连接至所述第三电压线，所述至少两个第二开关电路的第四电压输入端相连以作为所述第二选通电路的另一个第三端而连接至所述第四电压线，每个所述第二开关电路的所述第二输出端作为所述第二选通电路的一个第四端连接至一根所述导线的另一端，不同第二开关电路的第二输出端连接的导线不同，每个所述第二开关电路的所述至少一个第二控制信号输入端与所述至少一条第二控制信号线一一对应连接；
    所述第二控制信号线用以对所述第二控制信号输入端输入控制信号，以使得每个所述第二开关电路的第二输出端选择性与所述第三电压线或所述第四电压线连通，并使得在其中一个所述第二开关电路的第一输出端与所述第三电压线连通时，其他所述第二开关电路的第二输出端与所述第三电压线不连通。
  15. 根据权利要求14所述的触控面板，其中，每个所述第二开关电路包括第三开关单元和第四开关单元；
    所述第三开关单元包括至少一个第三开关元件，所述至少一个第三开关元件串联，所述至少一个第三开关元件所在的串联支路的一端连接至所述第二开关电路的第三电压输入端，所述至少一个第三开关元件所在的串联支路的另一端连接至所述第二开关电路的第二输出端，所述至少一个第三开关元件的控制端与所述第二开关电路的至少一个第二控制信号输入端一一对应连接；
    所述第四开关单元包括至少一个第四开关元件，所述至少一个第四开关元件并联，所述至少一个第四开关元件的一端均连接至所述第二开关电路的第二输出端，所述至少一个第四开关元件的另一端均连接至所述第二开关电路的第四电压输入端，所述至少一个第四开关元件的控制端与所述第二开关电路的至少一个第二控制信号输入端一一对应连接；
    其中，分别驱动连接同一个第二控制信号输入端的第三开关元件和第四开关元件导通的控制信号具有互逆关系，至少其中一个所述第二开关电路中的至少一个第三开关元件和至少一个第四开关元件通过反相器连接至同一个第一控制信号输入端，不同第二开关电路中连接有反相器的第三开关元件在所述串联支路中的位置不相同，不同第二开关电路中连接有反相器的第四开关元件在并联的第四开关元件中的位置不相同。
  16. 根据权利要求15所述的触控面板，其中，所述触控电极的数量和所述第二开关电路的数量相同，均为m，所述第二控制信号线的数量为n，每个所述第二开关电路的第二控制信号输入端、每个所述第二开关电路的第三开关元件以及每个所述第二开关电路的第四开关元件的数量也均为n，其中，m和n具有如下关系：m＝2n-1，n为整数且n≥1。
  17. 根据权利要求15所述的触控面板，其中，所述至少一个第三开关元件均为PMOS管，所述至少一个第四开关元件均为NMOS管。
  18. 根据权利要求9所述的触控面板，其中，所述触控电极同时作为触控面板的公共电极。
PCT/CN2016/074549 2016-01-29 2016-02-25 一种触控面板 Ceased WO2017128466A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109976585A (zh) * 2019-03-28 2019-07-05 合肥鑫晟光电科技有限公司 电路板、触控显示装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6660846B2 (ja) * 2016-08-01 2020-03-11 株式会社ジャパンディスプレイ 入力検出装置および電子装置
KR102634473B1 (ko) * 2016-12-23 2024-02-06 주식회사 엘엑스세미콘 패널구동장치 및 표시장치
US10394373B2 (en) * 2017-10-13 2019-08-27 Sharp Kabushiki Kaisha Active matrix touch panel with narrow bezel

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130293498A1 (en) * 2012-05-07 2013-11-07 Lg Display Co., Ltd. Liquid Crystal Display Device and Method of Driving the Same
CN103424909A (zh) * 2012-05-24 2013-12-04 乐金显示有限公司 内嵌式触摸型液晶显示装置及其驱动方法
CN104485082A (zh) * 2014-12-31 2015-04-01 厦门天马微电子有限公司 一种阵列基板和触控显示装置及其驱动方法
CN104505014A (zh) * 2014-12-31 2015-04-08 厦门天马微电子有限公司 一种驱动电路、阵列基板和触控显示装置及其驱动方法
CN105159507A (zh) * 2015-10-22 2015-12-16 厦门天马微电子有限公司 阵列基板、触控显示装置及其驱动方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3849485B2 (ja) * 2001-10-18 2006-11-22 セイコーエプソン株式会社 パルス処理回路および周波数逓倍回路
TWI381302B (zh) * 2008-11-12 2013-01-01 Tpo Displays Corp 影像顯示系統、電容觸控面板及其電容量測裝置與方法
US8922521B2 (en) * 2009-02-02 2014-12-30 Apple Inc. Switching circuitry for touch sensitive display
JP5424494B2 (ja) * 2010-08-20 2014-02-26 株式会社ジャパンディスプレイ 検知装置、表示装置および電子機器
US8791916B2 (en) 2011-04-13 2014-07-29 Japan Display West, Inc. Display panel with touch detection function, method of driving the same, driving circuit, and electronic unit
WO2013069289A1 (ja) * 2011-11-11 2013-05-16 パナソニック株式会社 タッチパネル装置
KR101607694B1 (ko) * 2012-06-21 2016-03-30 엘지디스플레이 주식회사 영상표시장치 및 터치 드라이버
JP5980157B2 (ja) * 2013-03-29 2016-08-31 株式会社ジャパンディスプレイ タッチ検出機能付き表示装置及び電子機器
KR101608326B1 (ko) * 2013-10-29 2016-04-01 엘지디스플레이 주식회사 터치패널 일체형 표시장치 및 그 구동 방법
CN104484068B (zh) * 2014-12-09 2018-09-18 深圳市华星光电技术有限公司 一种具有触摸功能的嵌入式显示屏、终端及触摸检测方法
CN104699315B (zh) 2015-04-01 2018-03-13 上海天马微电子有限公司 一种触控面板、触控显示面板和显示装置
EP3089002B1 (en) * 2015-04-30 2021-09-08 LG Display Co., Ltd. Touch sensor integrated type display device
CN104777955B (zh) * 2015-05-08 2018-02-16 厦门天马微电子有限公司 一种触控面板的驱动电路和触控面板

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130293498A1 (en) * 2012-05-07 2013-11-07 Lg Display Co., Ltd. Liquid Crystal Display Device and Method of Driving the Same
CN103424909A (zh) * 2012-05-24 2013-12-04 乐金显示有限公司 内嵌式触摸型液晶显示装置及其驱动方法
CN104485082A (zh) * 2014-12-31 2015-04-01 厦门天马微电子有限公司 一种阵列基板和触控显示装置及其驱动方法
CN104505014A (zh) * 2014-12-31 2015-04-08 厦门天马微电子有限公司 一种驱动电路、阵列基板和触控显示装置及其驱动方法
CN105159507A (zh) * 2015-10-22 2015-12-16 厦门天马微电子有限公司 阵列基板、触控显示装置及其驱动方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109976585A (zh) * 2019-03-28 2019-07-05 合肥鑫晟光电科技有限公司 电路板、触控显示装置
CN109976585B (zh) * 2019-03-28 2022-07-12 合肥鑫晟光电科技有限公司 电路板、触控显示装置

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