WO2019061742A1 - 一种触控显示面板及基于触控显示面板的驱动方法 - Google Patents

一种触控显示面板及基于触控显示面板的驱动方法 Download PDF

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Publication number
WO2019061742A1
WO2019061742A1 PCT/CN2017/111549 CN2017111549W WO2019061742A1 WO 2019061742 A1 WO2019061742 A1 WO 2019061742A1 CN 2017111549 W CN2017111549 W CN 2017111549W WO 2019061742 A1 WO2019061742 A1 WO 2019061742A1
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Prior art keywords
touch
wire
switch
circuit
display panel
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PCT/CN2017/111549
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English (en)
French (fr)
Inventor
黄耀立
贺兴龙
Original Assignee
武汉华星光电技术有限公司
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Application filed by 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US15/740,522 priority Critical patent/US10488974B2/en
Publication of WO2019061742A1 publication Critical patent/WO2019061742A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • 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

Definitions

  • the present invention relates to the field of computer technologies, and in particular, to a touch display panel and a driving method based on the touch display panel.
  • the touch screen is used as an input medium
  • the display screen is used as a display medium to facilitate human-computer interaction.
  • the touch screen and the display screen can be integrated into the touch display panel to form various types of electronic devices, such as mobile phones, tablet computers, and MP3/MP4.
  • the touch screen and the display screen of the electronic device are respectively used for touch sensing and image display, and the process is more, which increases the process difficulty.
  • the technical problem to be solved by the embodiments of the present invention is to provide a touch display panel and a driving method based on the touch display panel, which can realize the complex display and touch of the first wire and the second wire included in the touch display panel. Therefore, the touch display panel does not need to separately set the touch panel, in addition to reducing the process complexity and cost of the touch display panel, the requirement for thinning the touch display panel is also satisfied.
  • the embodiment of the invention provides a touch display panel, comprising: a plurality of first wires extending in a first direction and insulated from each other, a plurality of second wires extending in a second direction and insulated from each other, and being located at the first a pixel unit at a position where the wire intersects the second wire, the pixel unit is electrically connected to the first wire and the second wire; and the first wire is respectively disposed at two ends along the first direction a switch and a second switch, wherein the second wire is respectively disposed with a third switch and a fourth switch along two ends of the second direction, wherein the first direction is perpendicular to the second direction, and the touch display panel is divided When in the display state or touch sensing state;
  • the first switch and the third switch are in a closed state a state in which the second switch and the fourth switch are in an on state
  • the first wire transmits a scan driving signal to the pixel unit
  • the second wire transmits an image display signal to the pixel unit, such that The pixel unit performs image display
  • the first switch and the third switch are in an on state, and the second switch and the fourth switch are in an off state, the first The wire and the second wire form a touch sensing capacitor, and the first wire receives a touch driving signal, and the second wire is used to output a touch sensing signal to identify a touch operation received by the touch display panel.
  • the touch display panel further includes a touch circuit and a display circuit, wherein the touch circuit is electrically connected to the first wire through a first switch, and is electrically connected to the second wire through the third switch
  • the display circuit is electrically connected to the first wire through the second switch, and is electrically connected to the second wire through the fourth switch;
  • the first switch is configured to selectively control whether the first wire is electrically connected to the touch circuit, and the touch circuit is configured to output a touch drive when electrically connected to the first wire Signaling to the first wire;
  • the second switch is configured to selectively control whether the first wire is electrically connected to the display circuit, and the display circuit is configured to output a scan driving signal to the device when electrically connected to the first wire Said first wire;
  • the third switch is configured to selectively control whether the second wire is electrically connected to the touch circuit, and the touch circuit is further configured to: when electrically connected to the second wire, The second wire receives the touch sensing signal;
  • the fourth switch is configured to selectively control whether the second wire is electrically connected to the display circuit, and the display circuit is further configured to output an image display signal to the device when the telecommunication connection with the second wire is Said second wire.
  • the first display is in a display state, the first switch is in an off state, the first wire is electrically disconnected from the touch circuit, and the second switch is in a first time period.
  • the first wire In a conducting state, the first wire is electrically connected to the display circuit, the first wire receives a scan driving signal output by the display circuit, and in a second time period, the touch display panel is in touch Controlling the sensing state, the first switch is in an on state, the first wire is electrically connected to the touch circuit, the second switch is in an off state, the first wire and the display circuit Disconnecting the electrical connection, the first wire receiving the touch driving signal sent by the touch circuit;
  • the third switch In the first period of time, the third switch is in an off state, the second wire is electrically disconnected from the touch circuit, the fourth switch is in an on state, and the second wire is received by The image outputted by the display circuit displays a signal, and in a second period of time, the third switch is in an on state, the second wire is electrically connected to the touch circuit, and the fourth switch is turned off. The second wire is electrically connected to the touch circuit, and the second wire outputs the touch sensing signal to the touch circuit.
  • the n first wires are defined as a group, and the plurality of first wires extending in the first direction and insulated from each other include x groups, each group Each of the first wires simultaneously receives the touch driving signal outputted by the touch circuit, and the m second wires are defined as a group, and the plurality of second wires extending in the second direction and insulated from each other include the y group, The second wires of the y group simultaneously output the touch sensing signals to the touch circuit, and n, x, m, and y are positive integers greater than 1.
  • the touch control circuit outputs the touch drive signals to the first wires of the groups in a time-sharing manner, and simultaneously receives the touch sensing signals output by the second wires of the groups.
  • the touch driving signal is in a negative potential state when the touch display panel is in a touch sensing state.
  • the embodiment of the invention further provides a driving method based on a touch panel
  • the touch display panel includes a plurality of first wires, a plurality of second wires, and a first switch and a first switch disposed at two ends of the first wire a second switch, a third switch and a fourth switch disposed on the second wire, and a pixel unit located at an intersection of the first wire and the second wire, including a plurality of consecutive duty cycles, each working cycle ,include:
  • the first wire and the second wire form a touch sensing capacitance
  • the first switch and the third switch are controlled to be turned on, the second switch and the fourth switch Turning off, the touch driving signal is loaded on the first wire, and the touch sensing signal is output from the second wire, wherein the touch display panel performs touch sensing; wherein, the first time The segment and the second time period are continuous in time and have no intersection.
  • the touch display panel further includes a touch circuit and a display circuit, and the method further includes:
  • Controlling the first switch to selectively control whether the first wire is electrically connected to the touch circuit, so that when the first wire is electrically connected to the touch circuit, the touch The circuit loads the touch driving signal on the first wire;
  • Controlling the fourth switch to selectively control whether the second wire is electrically connected to the display circuit, so that the display circuit displays an image when the second wire is electrically connected to the display circuit A signal is applied to the second wire.
  • the method further includes:
  • first wires as a group, the plurality of first wires comprising x groups, each first wire of each group simultaneously receiving a touch driving signal output by the touch circuit;
  • the m second wires are defined as a group, and the plurality of first wires comprise x groups, and the y group second wires simultaneously output the touch sensing signals to the touch circuit; wherein, n, x , m, y are positive integers greater than 1.
  • the touch control circuit outputs the touch driving signals to the first wires of the groups in a time-sharing manner, and simultaneously receives the touch sensing signals output by the second wires of the groups.
  • the first wire and the second wire may respectively load the scan driving signal and the image display signal, or the first wire and the second wire may respectively load the touch driving signal and the touch sensing signal, thereby realizing the first wire and the second wire
  • the multiplex of the display of the wire and the touch enables the touch display panel to be separately provided with the touch panel. In addition to reducing the complexity and cost of the touch display panel, the touch display panel is also required to be thinner. .
  • FIG. 1 is a schematic structural diagram of a touch display panel according to an embodiment of the present invention.
  • FIG. 2 is a schematic plan view showing the planar structure of the array substrate in the touch display panel shown in FIG. 1;
  • FIG. 3 is a schematic diagram of waveforms of a touch driving signal according to an embodiment of the present invention.
  • FIG. 4 is a schematic flow chart of a driving method of the touch display panel shown in FIG. 2;
  • FIG. 5 is a timing chart of operation of the touch display panel shown in FIG. 2.
  • FIG. 5 is a timing chart of operation of the touch display panel shown in FIG. 2.
  • FIG. 1 is a schematic structural diagram of a touch display panel according to an embodiment of the present invention.
  • the touch display panel 1000 includes at least a counter substrate 100, an array substrate 200, and a dielectric layer 300 between the opposite substrate 100 and the array substrate 200.
  • the dielectric layer 300 includes, but is not limited to, a liquid crystal layer, such as an organic light emitting material (OLED).
  • OLED organic light emitting material
  • the dielectric layer 300 will be exemplified as a liquid crystal layer for further description.
  • the array substrate 200 is provided with a plurality of scan lines (not shown) for providing a scan driving signal and a data line (not shown) for providing an image display signal, which are disposed at intersections of the scan lines and the data lines.
  • a display electrode (not shown) is used to generate an electric field under the driving of a driving circuit provided in the non-image display area of the array substrate 200 to rotate the corresponding driving liquid crystal molecules to control the luminous flux for image display.
  • the plurality of color filter layers can be disposed on the opposite substrate 100 corresponding to the display electrodes, so that the touch display panel 1000 can perform color image display.
  • the plurality of colors may be red, green and blue RGB three primary colors.
  • the opposite substrate 100 and the array substrate 200 may be provided to the cartridge. Of course, it is also possible to provide a gap between the opposite substrate 100 and the array substrate 200, which can be used for holding The distance between the opposite substrate 100 and the array substrate 200.
  • the touch display panel 1000 can perform detection of a touch operation applied to the touch display panel 1000 by using a capacitance structure composed of a scan line and a data line in addition to image display.
  • the touch display panel 1000 is in a display state or a touch sensing state in a duty cycle. Specifically, in the first time period, the touch display panel 1000 is in a display state, that is, the data line on the array substrate 200 and the scan line cooperate to transmit an image display signal to the display electrode for image display; in the second time period, The touch display panel 1000 is in a touch sensing state, that is, the data line and the scan line stop providing the image display signal to the display electrode, one of the data line and the scan line loads the touch drive signal, and the other is used for outputting the touch. Control the sensing signal to achieve touch operation detection.
  • one duty cycle refers to including at least one frame of image display and completing one touch sensing in the touch display panel 1000.
  • the touch sensing and the image display can be performed by using the scan lines and the data lines included in the touch display panel in a time-sharing manner, thereby realizing the display and touch of the data lines and the scan lines.
  • Time multiplexing reduces the difficulty of the process for the touch display panel and satisfies the need for thinning the touch display panel.
  • FIG. 2 is a schematic diagram showing the planar structure of the array substrate 200 in the touch display panel 1000 illustrated in FIG. 1 .
  • the array substrate 200 includes a plurality of first wires 10 extending along the first direction x, a plurality of second wires 20 extending along the second direction y, and the first wires 10 and 2
  • the pixel unit 30 at the intersection of the wires 20 is perpendicular to the second direction y.
  • the pixel unit 30 is electrically connected to the first wire 10 and the second wire 20 .
  • the array substrate 200 further includes a touch circuit 40 and a display circuit 50.
  • the touch circuit 40 is electrically connected to the first wire 10 and the second wire 20 .
  • the display circuit 50 is electrically connected to the first wire 10 and the second wire 20 .
  • the first wire 10 serves as a scanning line for supplying a scanning signal
  • the second wire 20 serves as a data line for supplying an image signal.
  • the touch control circuit 40 loads the touch driving signal on the first wire 10 and receives the touch sensing signal output by the second wire 20 to identify The touch operation received by the touch display panel 1000.
  • the display circuit 50 loads the scan driving signal on the first wire 10 and displays the image The number is loaded on the second wire 20, and the first wire 10 and the second wire 20 respectively transmit a scan driving signal and an image display signal to the pixel unit 30, so that the pixel unit 30 performs image display.
  • first wire 10 and the second switch 12 are respectively disposed at two ends of the first wire 10 along the first direction x.
  • the second wire 20 and the fourth switch 22 are respectively disposed at two ends of the second wire 20 along the second direction y.
  • the touch circuit 40 includes a touch display circuit 401 and a touch sensing circuit 402.
  • the touch driving circuit 401 is electrically connected to the first wire 10 through the first switch 11
  • the touch sensing circuit 402 is electrically connected to the second wire 20 through the third switch 21 .
  • the display circuit 50 includes a scan driving circuit 501 and a data driving circuit 502.
  • the scan driving circuit 501 is electrically connected to the first wire 10 through the second switch 12, and the data driving circuit 502 is electrically connected to the second wire 20 through the fourth switch 22.
  • the signal loaded on the first wire 10 can be selectively controlled as a scan driving signal or a touch driving signal.
  • the on/off state is an on state or an off state. Specifically, when the first switch 11 is in an on state and the second switch 12 is in an off state, the touch driving circuit 401 loads a touch driving signal onto the first wire 10; when the first switch 11 is in an off state, and the second switch 12 is in an on state, and the scan driving circuit 501 loads a scan driving signal onto the first wire 10.
  • the signal loaded on the second wire 20 can be selectively controlled to be an image display signal or a touch sensing signal.
  • a touch sensing capacitor (not shown) formed by the intersection of the first wire 10 and the second wire 20 will The touch sensing signal is loaded onto the second wire 20; when the third switch 21 is in an off state, and the fourth switch 22 is in an on state, the data driving circuit 502 loads the image display signal to the second wire 20 on.
  • the scan The driving circuit 501 loads a scan driving signal onto the first wire 10, and the first wire 10 transmits the scan driving signal to the pixel unit 30 to turn on the pixel unit 30, so that the data driving circuit 502 displays an image signal
  • the second wire 20 transmits an image display signal to the pixel unit 30 to cause the pixel unit 30 to perform image display, thereby
  • the touch display panel 1000 performs image display.
  • the driving circuit 401 loads the touch driving signal onto the first wire 10, and the first wire 10 transmits the touch driving signal to the touch sensing capacitor formed at the intersection of the first wire 10 and the second wire 20, thereby
  • the touch driving signal is converted into a touch sensing signal and then loaded into the second wire 20, so that the second wire 20 outputs the touch sensing signal to the touch sensing circuit 402.
  • the touch operation received by the touch display panel 1000 is identified.
  • the touch operation includes, but is not limited to, a touch operation such as a pressing operation and a sliding operation.
  • the touch driving signal when the touch display panel 1000 is in the touch sensing state, the touch driving signal is in a negative potential state, thereby preventing the pixel unit 30 from being mistakenly opened. And the image is displayed.
  • the touch driving signal includes a plurality of pulse signals. As shown in FIG. 3, the touch sensing signal output by the touch driving circuit 401 to each set of first wires 10 (TX1-TX32) includes five -7V pulse signals.
  • the plurality of first wires 10 are defined as x groups, and each group includes n first wires 10, and each of the first wires 10 simultaneously transmits signals.
  • the plurality of second wires 20 are defined as y groups, and each of the second wires 20 includes m second wires 20, and the y groups each of the second wires 20 simultaneously transmit signals.
  • n, x, m, and y are all positive integers greater than one.
  • the number of the plurality of first wires 10 and the number of the plurality of second wires 20 are determined according to the resolution of the touch display panel 1000. For example, if the resolution of the touch display panel 1000 is 1920*1080, the number of the plurality of first wires 10 is 1920, and the number of the plurality of second wires 20 is 3240.
  • the touch driving circuit 401 of the touch circuit 40 outputs a touch driving signal to all the first wires 10 in each group when the first switch 11 of each set of the first wires 10 is in an on state.
  • the touch sensing circuit 402 of the touch control circuit 40 receives the touch sensing signals output by the groups of second wires 20 when the third switch 21 of each group of second wires 20 is in an on state.
  • the 1920 first wires 10 are defined as 32 groups, including TX 1 -TX 32 groups.
  • Each set includes 60 first wires 10.
  • the 3240 second wires 20 are defined as 18 groups, including RX 1 - RX 18 groups.
  • Each set includes 180 second wires 20.
  • the touch driving circuit 401 of the touch control circuit 40 outputs a touch driving signal to the first wire 10 of the corresponding group when the first switch 11 of each of the first wires 10 of the 32 sets of first wires 10 is in an on state.
  • the touch sensing circuit 402 of the touch control circuit 40 receives the touch sense output by each set of second wires 20 when the third switch 21 of each group of the second wires 20 in the 18 sets of second wires 20 is in an on state. Measuring signal.
  • the touch driving circuit 401 in the touch control circuit 40 outputs the touch driving signals to the groups of the first wires 10 in a time-sharing manner, and the touch circuit 40
  • the touch sensing circuit 402 receives the touch sensing signals output by the second set of wires 20 at the same time.
  • the 1920 first wires 10 are defined as 32 groups, including the TX1-TX32 group. Each set includes 60 first wires 10.
  • the touch driving circuit 401 outputs a touch driving signal to the first wire 10 of the TX1 group.
  • the touch driving circuit 401 outputs a touch driving signal to the first wire 10 of the TX2 group.
  • the touch driving circuit 401 outputs a touch driving signal to the first wire 10 of the TX32 group.
  • the touch driving signal includes five pulse signals. As shown in FIG.
  • the 3240 second wires 20 are defined as 18 groups, including the RX1-RX18 group. Each set includes 180 second wires 20.
  • the touch sensing circuit 402 simultaneously receives the touch sensing signals output by the 18 sets of second wires 20.
  • the embodiment of the present invention by controlling the on-off state of the first switch and the second switch disposed on the first wire, and by controlling the on-off state of the third switch and the fourth switch disposed on the second wire,
  • the scan wire driving signal and the image display signal are respectively loaded on the first wire and the second wire, or the touch driving signal and the touch sensing signal are respectively loaded on the first wire and the second wire, thereby realizing the first wire and the first wire
  • the multiplexing of the two-wire display and the touch control makes the touch display panel need not separately set the touch panel separately, in addition to reducing the complexity and cost of the touch display panel, and satisfying the thinning of the touch display panel. demand.
  • FIG. 4 is a schematic flowchart of a driving method of the touch display panel 1000 shown in FIG. 2
  • FIG. 5 is a timing chart of the operation of the touch display panel 1000 shown in FIG.
  • the touch display panel 1000 includes a plurality of consecutive duty cycles P, such as Pi, Pi+1, Pi+2, . . . , where i is a natural number greater than or equal to 1.
  • This embodiment uses the duty cycle Pi as an example to specifically describe the working steps of the touch display panel 1000.
  • the control touch The control panel 1000 is in the display state during the first time period p1, and controls the touch display panel 1000 to be in the touch sensing state during the second time period p2.
  • the driving method includes the following steps:
  • the first switch 11 disposed on the first wire 10 included in the touch display panel 1000 and the third switch 21 disposed on the second wire 20 included in the touch display panel 1000 are closed.
  • the second switch 12 disposed on the first wire 10 of the touch display panel 1000 is electrically connected to the fourth switch 22 disposed on the second wire 20 included in the touch display panel 1000 to enable scan driving.
  • a signal is applied to the first wire 10, and the image display signal is transmitted through the second wire 20 to a pixel unit 30 located at a position where the first wire 10 and the second wire 20 intersect, the touch The display panel 1000 performs image display.
  • the touch display panel 1000 controls the touch display panel 1000 to perform image display or touch control by controlling the on and off of the switches in the first wire 10 and the on and off of the switches in the second wire 20 .
  • Identification. This "on and off” can be understood as being turned on or off.
  • the first wire 10 is a scan line
  • the second wire 20 is a data line.
  • the touch display panel 1000 can selectively control the signal loaded on the first wire 10 to be a scan driving signal or a touch driving signal by controlling the on and off of the first switch 11 and the second switch 12 .
  • the signal loaded on the second wire 20 can be selectively controlled to be an image display signal or a touch sensing signal.
  • the touch display panel 1000 is turned off by controlling the first switch 11 and the third switch 21, and the second switch 12 and the fourth switch 22 are turned on, thereby loading the scan driving signal into the first On a wire 10, an image display signal is loaded onto the second wire 20 to cause the touch display panel 1000 to perform image display during the first time period p1.
  • the first wire 10 transmits a scan driving signal to the pixel unit to turn on the pixel unit 30, the pixel unit 30 receives the image display signal output by the second wire 20, so that the pixel unit 30 displays according to the image.
  • the signal is displayed in an image such that the touch display panel 1000 can perform image display.
  • the first wire 10 and the second wire 20 constitute a touch sensing capacitance, and the first switch 11 and the third switch 21 are controlled to be turned on, the second The switch 12 and the fourth switch 22 are turned off to load a touch driving signal on the first wire 10 and output a touch sensing signal from the second wire 20, and the touch display panel 1000 performs Touch sensing.
  • the touch display panel 1000 controls the first switch during the second time period p2. 11 and the third switch 21 is turned on, the second switch 12 and the fourth switch 22 are turned off, thereby loading the touch driving signal onto the first wire 10, and loading the touch sensing signal to the second wire 20 In order to enable the touch display panel 1000 to perform touch recognition during the second time period.
  • the touch sensing signal is a touch sensing capacitor formed by the intersection of the first wire 10 and the second wire 20 to convert the touch driving signal outputted by the first wire 10 to the second wire 20.
  • the second time period p2 is located after the first time period p1.
  • the first time period p1 and the second time period p2 are continuous in time and have no intersection.
  • the touch control circuit 40 outputs a touch driving signal to the first wire 10 after the first switch 11 is turned on, and the second wire 20 outputs the touch sensing signal to the
  • the touch circuit 40 is configured to identify a touch operation received by the touch display panel 1000.
  • the touch operation includes, but is not limited to, a touch operation such as a pressing operation and a sliding operation.
  • the touch circuit 40 can include a touch driving circuit 401 and a touch sensing circuit 402.
  • the touch driving circuit 401 outputs a touch driving signal to the first wire 10 after the first switch 11 is turned on, and the second wire 20 outputs the touch sensing signal to the touch.
  • the sensing circuit 402 is controlled to identify the touch operation received by the touch display panel 1000.
  • the plurality of first wires 10 are defined as x groups, each group includes n first wires 10, and the touch driving circuit 401 in the touch circuit 40 outputs touches to the groups of first wires 10 in a time-sharing manner. Control the drive signal.
  • the plurality of second wires 20 are defined as y groups, each group includes m second wires 20, and the touch sensing circuit 402 in the touch circuit 40 simultaneously receives the contacts output by the y group second wires 20. Control the sensing signal.
  • n, x, m, and y are all positive integers greater than one.
  • the number of the plurality of first wires 10 and the number of the plurality of second wires 20 are determined according to the resolution of the touch display panel 1000, as shown in FIG. 2, if the touch display panel is The resolution is 1920*1080, the number of the plurality of first wires 10 is 1920, and the number of the plurality of second wires 20 is 3240.
  • the 1920 first wires 10 are defined as 32 groups, including TX1-TX32 groups. Each set includes 60 first wires 10.
  • the touch driving circuit 401 outputs a touch driving signal to the first wire 10 of the TX1 group.
  • the touch driving circuit 401 outputs a touch driving signal to the first wire 10 of the TX2 group.
  • the touch driving circuit 401 outputs a touch driving signal to the first wire 10 of the TX32 group.
  • the touch driving signal includes five pulse signals. As shown in FIG.
  • the 3240 second wires 20 are defined as 18 groups, including RX1-RX18 group, each group includes 180 second wires 20.
  • the touch sensing circuit 402 simultaneously receives the touch sensing signals output by the 18 sets of second wires 20.
  • the touch driving signal is in a negative potential state, thereby preventing the pixel unit 30 from being driven to perform image display.
  • the touch driving signal outputted by the touch driving circuit 401 to each set of first wires 10 includes five -7V pulse signals.
  • the signals respectively loaded on the first wire and the second wire can be controlled to be touched.
  • Controlling the driving signal and the touch sensing signal, or the signals respectively loaded on the first wire and the second wire are the scanning driving signal and the image display signal, thereby realizing multiplexing of the display and the touch of the first wire and the second wire, Therefore, the multiplexing of the first wire and the second wire display and the touch is realized, so that the touch display panel does not need to separately set the touch panel, in addition to reducing the process complexity and cost of the touch display panel, The need for a thinner touch display panel.

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Abstract

一种触控显示面板（1000）及其驱动方法，其中，该触控显示面板（1000）包括：多条第一导线（10）、多条第二导线（20）以及位于第一导线（10）与第二导线（20）交叉位置的像素单元（30），像素单元（30）与第一导线（10）与第二导线（20）电性连接；第一导线（10）沿着第一方向（x）的两端分别设置有第一开关（11）与第二开关（12），第二导线（20）沿着第二方向（y）的两端分别设置第三开关（21）与第四开关（22），第一方向（x）垂直于第二方向（y），触控显示面板（1000）分时处于显示状态或触控感测状态。采用本发明，可以实现第一导线（10）与第二导线（20）显示与触控的复用，既降低了触控显示面板（1000）的制程复杂度以及成本，还满足了对于触控显示面板（1000）薄型化的需求。

Description

一种触控显示面板及基于触控显示面板的驱动方法
本专利申请要求2017年09月27日提交的中国专利申请号为2017108907720，发明名称为“一种触控显示面板及基于触控显示面板的驱动方法”的优先权，该申请的全文以引用的方式并入本申请中。
技术领域
本发明涉及计算机技术领域，尤其涉及一种触控显示面板及基于触控显示面板的驱动方法。
背景技术
目前，触摸屏作为输入媒介，显示屏作为显示媒介，可以方便人机交互。通常，触摸屏和显示屏可以集成在触控显示面板中形成各类电子设备，如手机、平板电脑、MP3/MP4。
通常情况下，电子设备的触摸屏和显示屏分别用于触控感测以及图像显示，制程较多，增加了工艺难度。
发明内容
本发明实施例所要解决的技术问题在于，提供一种触控显示面板及基于触控显示面板的驱动方法，可以实现对触控显示面板包括的第一导线与第二导线显示与触控的复用，使得触控显示面板无需另外单独设置触控面板，除了可以降低触控显示面板的制程复杂度以及成本之外，还满足了对于触控显示面板薄型化的需求。
本发明实施例提供了一种触控显示面板，包括：多条沿第一方向延伸且相互绝缘的第一导线、多条沿第二方向延伸且相互绝缘的第二导线以及位于所述第一导线与所述第二导线交叉位置的像素单元，所述像素单元与所述第一导线与所述第二导线电性连接；所述第一导线沿着第一方向的两端分别设置有第一开关与第二开关，所述第二导线沿着第二方向的两端分别设置第三开关与第四开关，所述第一方向垂直于所述第二方向，所述触控显示面板分时处于显示状态或触控感测状态；
当所述触控显示面板处于显示状态，所述第一开关与第三开关处于关断状 态，所述第二开关与所述第四开关处于导通状态，所述第一导线传输扫描驱动信号至所述像素单元，且所述第二导线传输图像显示信号至所述像素单元，使得所述像素单元进行图像显示；
当所述触控显示面板处于触控感测状态，所述第一开关与所述第三开关处于导通状态，所述第二开关与所述第四开关处于关断状态，所述第一导线与所述第二导线构成触控感测电容，且所述第一导线接收触控驱动信号，所述第二导线用于输出触控感测信号，以识别触控显示面板接收的触摸操作。
其中，所述触控显示面板还包括触控电路与显示电路，所述触控电路通过第一开关与所述第一导线电性连接，且通过所述第三开关与所述第二导线电性连接，所述显示电路通过所述第二开关与所述第一导线电性连接，且通过所述第四开关与所述第二导线电性连接；
所述第一开关，用于选择性控制所述第一导线是否与所述触控电路电性连接，所述触控电路用于在与所述第一导线电性连接时，输出触控驱动信号至所述第一导线；
所述第二开关，用于选择性控制所述第一导线是否与所述显示电路电性连接，所述显示电路用于在与所述第一导线电性连接时，输出扫描驱动信号至所述第一导线；
所述第三开关，用于选择性控制所述第二导线是否与所述触控电路电性连接，所述触控电路还用于在与所述第二导线电性连接时，从所述第二导线接收触控感测信号；
所述第四开关，用于选择性控制所述第二导线是否与所述显示电路电性连接，所述显示电路还用于在与所述第二导线电信连接时，输出图像显示信号至所述第二导线。
其中，在第一时间段，所述触控显示面板处于显示状态，所述第一开关处于关断状态，所述第一导线与所述触控电路电性断开，所述第二开关处于导通状态，所述第一导线与所述显示电路电性连接，所述第一导线接收由所述显示电路输出的扫描驱动信号，并在第二时间段，所述触控显示面板处于触控感测状态，所述第一开关处于导通状态，所述第一导线与所述触控电路电性连接，所述第二开关处于关断状态，所述第一导线与所述显示电路断开电性连接，所述第一导线接收由触控电路发送的触控驱动信号；
在第一时间段，所述第三开关处于关断状态，所述第二导线与所述触控电路断开电性连接，所述第四开关处于导通状态，所述第二导线接收由所述显示电路输出的图像显示信号，并在第二时间段，所述第三开关处于导通状态，所述第二导线与所述触控电路电性连接，所述第四开关处于关断状态，所述第二导线与所述触控电路电性连接，所述第二导线输出所述触控感测信号至所述触控电路。
其中，当所述触控显示面板处于触控感测状态时，n条第一导线定义为一组，所述多条沿第一方向延伸且相互绝缘的第一导线包括x组，每一组的各第一导线同时接收由触控电路输出的触控驱动信号，m条第二导线定义为一组，所述多条沿第二方向延伸且相互绝缘的第二导线包括y组，所述y组各第二导线同时输出所述触控感测信号至所述触控电路，n、x、m、y均为大于1的正整数。
其中，所述触控电路分时地向各组第一导线输出触控驱动信号，并同时地接收由各组第二导线输出的触控感测信号。
其中，当所述触控显示面板处于触控感测状态时，所述触控驱动信号处于负电位状态。
本发明实施例还提供了一种基于触控面板的驱动方法，所述触控显示面板包括多条第一导线，多条第二导线，设置在所述第一导线两端的第一开关和第二开关，设置在所述第二导线的第三开关和第四开关、位于所述第一导线和所述第二导线交叉位置的像素单元，包括多个连续的工作周期，每一个工作周期内，包括：
在第一时间段，控制所述第一开关以及所述第三开关关断，所述第二开关与所述第四开关导通，以使扫描驱动信号加载于所述第一导线，通过所述第二导线将所述图像显示信号传输至所述像素单元，所述触控显示面板进行图像显示；
在第二时间段，所述第一导线与所述第二导线构成触控感测电容，控制所述第一开关与所述第三开关导通，所述第二开关与所述第四开关关断，以使触控驱动信号加载于所述第一导线，并从所述第二导线输出触控感测信号，所述触控显示面板进行触控感测；其中，所述第一时间段和所述第二时间段在时间上连续且无交叉。
其中，所述触控显示面板还包括触控电路与显示电路，所述方法还包括：
控制所述第一开关通断以选择性控制所述第一导线是否与所述触控电路电性连接，以便在所述第一导线与所述触控电路电性连接时，所述触控电路将所述触控驱动信号加载于所述第一导线上；
控制所述第二开关通断以选择性控制所述第一导线是否与所述显示电路电性连接，以便所述第一导线与所述显示电路电性连接时，所述显示电路将扫描驱动信号加载于所述第一导线上；
控制所述第三开关通断以选择性控制所述第二导线是否与所述触控电路电性连接，以便在所述第二导线与所述触控电路电性连接时，所述触控电路接收由所述第二导线输出的触控感测信号；
控制所述第四开关通断以选择性控制所述第二导线是否与所述显示电路电性连接，以便所述第二导线与所述显示电路电性连接时，所述显示电路将图像显示信号加载于所述第二导线上。
其中，所述方法还包括：
将n条第一导线定义为一组，所述多条第一导线包括x组，每一组的各第一导线同时接收由触控电路输出的触控驱动信号；
将m条第二导线定义为一组，所述多条第一导线包括x组，所述y组第二导线同时输出所述触控感测信号至所述触控电路；其中，n、x、m、y均为大于1的正整数。
其中，所述触控电路分时地向各组第一导线输出所述触控驱动信号，并同时地接收由各组第二导线输出的所述触控感测信号。
综上所述，可以通过控制设置在第一导线上的第一开关与第二开关的通断状态，以及通过控制设置在第二导线上的第三开关与第四开关的通断状态，使得第一导线与第二导线可以分别加载扫描驱动信号以及图像显示信号，或者使得第一导线与第二导线可以分别加载触控驱动信号与触控感测信号，从而实现了第一导线与第二导线显示与触控的复用，使得触控显示面板无需另外单独设置触控面板，除了可以降低触控显示面板的制程复杂度以及成本之外，还满足了对于触控显示面板薄型化的需求。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例提供的一种触控显示面板的结构示意图；
图2是图1所示的触控显示面板中阵列基板的平面结构示意图；
图3是本发明实施例提供的一种触控驱动信号的波形示意图；
图4为图2所示的触控显示面板的驱动方法的流程示意图；
图5为图2所示的触控显示面板的工作时序图。
具体实施方式
下面将结合本发明实施方式中的附图，对本发明实施方式中的技术方案进行清楚、完整地描述。显然，所描述的实施方式是本发明的一部分实施方式，而不是全部实施方式。基在本发明中的实施方式，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施方式，都应属在本发明保护的范围。
请参阅图1，图1为本发明实施例提供的一种触控显示面板的结构示意图。其中，该触控显示面板1000至少包括：对向基板100、阵列基板200以及该对向基板100与该阵列基板200之间的介质层300。其中，该介质层300包括但不限于液晶层，例如有机发光材料(OLED)。下面将以该介质层300为液晶层为例，进行进一步描述。
阵列基板200上设置有多条相互交叉且绝缘设置的提供扫描驱动信号的扫描线(图未示)与图像显示信号的数据线(图未示)，且在扫描线与数据线交叉处设置的显示电极(图未示)，显示电极在设置于阵列基板200非图像显示区的驱动电路的驱动下产生电场使对应驱动液晶分子旋转来控制光通量以进行图像显示。其中，对向基板100上可以对应显示电极设置多种颜色的滤光层，从而使得触控显示面板1000能够进行彩色图像显示。其中，所述多种颜色可以为红绿蓝RGB三原色。
对向基板100与阵列基板200可以对盒设置。当然，可变更地，还可以在对向基板100以及阵列基板200之间设置一个间隙子，该间隙子可以用于保持 对向基板100与阵列基板200之间的间隔距离。
本实施例中，触控显示面板1000除能够进行图像显示外，还同时利用扫描线与数据线构成的电容结构来实现针对施加到触控显示面板1000上触摸操作的检测。其中，触控显示面板1000在一个工作周期中分时处于显示状态或者触控感测状态。具体地，在第一时间段，该触控显示面板1000处于显示状态，也即是阵列基板200上的数据线与扫描线配合传输图像显示信号至显示电极进行图像显示；在第二时间段，触控显示面板1000处于触控感测状态，也即是数据线与扫描线停止提供图像显示信号至显示电极，数据线与扫描线其中之一加载触控驱动信号，另外一个则用于输出触控感测信号，从而实现触摸操作检测。
本发明实施例中，一个工作周期指的是包括至少一帧图像显示与完成触控显示面板1000中一次触控感测。
采用本发明实施例，可以通过分时地利用该触控显示面板上包括的扫描线以及数据线来进行触控感测以及图像显示，实现了对于数据线以及扫描线的显示与触控的分时复用，降低了对于该触控显示面板的制程难度，满足了对于触控显示面板薄型化的需求。
请参阅图2，图2为图1所示的触控显示面板1000中阵列基板200的平面结构示意图。请一并参阅图1与图2，阵列基板200包括多个沿第一方向x延伸的第一导线10、多个沿第二方向y延伸的第二导线20、位于第一导线10与第二导线20交叉位置的像素单元30，该第一方向x与该第二方向y相互垂直。其中，该像素单元30与第一导线10以及第二导线20均电性连接。该阵列基板200还包括触控电路40与显示电路50。该触控电路40与该第一导线10以及该第二导线20均电性连接，该显示电路50与该第一导线10以及该第二导线20均电性连接。本实施例中，第一导线10作为提供扫描信号的扫描线，第二导线20作为提供图像信号的数据线。
在该触控显示面板1000处于触控感测状态时，该触控电路40将触控驱动信号加载于第一导线10，并接收由该第二导线20输出的触控感测信号，从而识别该触控显示面板1000接收的触摸操作。在该触控显示面板1000处于显示状态时，该显示电路50将扫描驱动信号加载于第一导线10，并将图像显示信 号加载于第二导线20，该第一导线10以及该第二导线20分别将扫描驱动信号以及图像显示信号传输至该像素单元30，以使该像素单元30进行图像显示。
具体地，该第一导线10沿第一方向x的两端分别设置有第一开关11以及第二开关12。该第二导线20沿第二方向y的两端分别设置有第三开关21以及第四开关22。
该触控电路40包括触控显示电路401以及触控感测电路402。该触控驱动电路401通过第一开关11与该第一导线10电性连接，该触控感测电路402通过第三开关21与该第二导线20电性连接。该显示电路50包括扫描驱动电路501以及数据驱动电路502。该扫描驱动电路501通过该第二开关12与该第一导线10电性连接，该数据驱动电路502通过第四开关22与该第二导线20电性连接。
需要说明的是，通过控制该第一开关11以及该第二开关12的通断状态，可以选择性控制该第一导线10上加载的信号为扫描驱动信号或者触控驱动信号。其中，该通断状态为导通状态或者关断状态。具体地，当该第一开关11处于导通状态，且该第二开关12处于关断状态，该触控驱动电路401将触控驱动信号加载到该第一导线10上；当该第一开关11处于关断状态，且该第二开关12处于导通状态，该扫描驱动电路501将扫描驱动信号加载到该第一导线10上。通过控制该第三开关21以及该第四开关22的通断状态，可以选择性控制在该第二导线20上加载的信号为图像显示信号或者触控感测信号。具体地，当该第三开关21处于导通状态，且该第四开关22处于关断状态，该第一导线10与该第二导线20交叉位置形成的触控感应电容(图未示)将触控感测信号加载到该第二导线20上；当该第三开关21处于关断状态，且该第四开关22处于导通状态，数据驱动电路502将图像显示信号加载到第二导线20上。
更具体地，在该触控显示面板1000处于显示状态时，该第一开关11和该第三开关21处于关断状态，该第二开关12以及该第四开关22处于导通状态，该扫描驱动电路501将扫描驱动信号加载到该第一导线10上，该第一导线10将该扫描驱动信号传输至该像素单元30以打开该像素单元30，使得该数据驱动电路502在将图像显示信号加载到该第二导线20上后，该第二导线20将图像显示信号传输至该像素单元30以使该像素单元30进行图像显示，从而使得 该触控显示面板1000进行图像显示。在该触控显示面板1000处于触控感测状态时，该第一开关11和该第三开关21处于导通状态，该第二开关12以及该第四开关22处于关断状态，该触控驱动电路401将触控驱动信号加载到该第一导线10上，该第一导线10将该触控驱动信号传输至该第一导线10与第二导线20交叉位置形成的触控感应电容，从而经由该触控感应电容将该触控驱动信号转化为触控感应信号后加载到第二导线20上，使得该第二导线20将该触控感测信号输出至触控感测电路402，以识别该触控显示面板1000接收的触摸操作。该触摸操作，包括但不限于按压操作、滑动操作等触控操作。
较佳地，若前述第一-第四开关为N型薄膜晶体管，在触控显示面板1000处于触控感测状态时，前述触控驱动信号处于负电位状态，从而防止像素单元30被错误打开而进行图像显示。本实施例中，该触控驱动信号包括多个脉冲信号。如图3所示，触控驱动电路401向各组第一导线10(TX1-TX32)输出的触控感测信号包括5个-7V的脉冲信号。
较佳地，前述多条第一导线10定义成x组，每一组包括n条第一导线10，每一组各第一导线10同时传输信号。相应地，前述多条第二导线20定义成y组，每一组第二导线20包括m条第二导线20，该y组各第二导线20同时传输信号。其中，n、x、m、y均为大于1的正整数。
需要说明的是，该多条第一导线10的数量以及多条第二导线20的数量是根据触控显示面板1000的分辨率确定的。例如，若触控显示面板1000的分辨率为1920*1080，则该多条第一导线10的数量为1920条，该多条第二导线20的数量3240条。
触控电路40中触控驱动电路401在每一组第一导线10的第一开关11处于导通状态时，输出触控驱动信号到每一组内的所有第一导线10。触控电路40中的触控感测电路402在各组第二导线20的第三开关21处于导通状态时，接收由该各组第二导线20输出的触控感测信号。
例如，如图2所示，若该多条第一导线10有1920条，则该1920条第一导线10定义成32组，包括TX1-TX32组。每组包括60条第一导线10。相应地，若该多条第二导线有3240条，则该3240条第二导线20定义成18组，包括RX1-RX18组。每组包括180条第二导线20。触控电路40中的触控驱动电路401在32组第一导线10中每一组第一导线10的第一开关11处于导通状态 时，输出触控驱动信号到相应组的第一导线10。触控电路40中的触控感测电路402在18组第二导线20中各组第二导线20的第三开关21处于导通状态时，接收由各组第二导线20输出的触控感测信号。
具体地，在该触控显示面板1000处于触控感测状态时，该触控电路40中的触控驱动电路401分时地向各组第一导线10输出触控驱动信号，触控电路40中的触控感测电路402同时地接收由各组第二导线20输出的触控感测信号。
例如，如图2所示，若该多个第一导线10有1920条，则该1920条第一导线10定义成32组，包括TX1-TX32组。每组包括60条第一导线10。如图3所示，在t1至t2，触控驱动电路401向TX1组的第一导线10输出触控驱动信号。在t3至t4，触控驱动电路401向TX2组的第一导线10输出触控驱动信号。在t62至t64，触控驱动电路401向TX32组的第一导线10输出触控驱动信号。其中，该触控驱动信号包括5个脉冲信号。如图2所示，若该多个第二导线有3240条，则该3240条第二导线20定义成18组，包括RX1-RX18组。每组包括180条第二导线20。该触控感测电路402同时地接收由该18组第二导线20输出的触控感测信号。
采用本发明实施例，可以通过控制设置在第一导线上的第一开关与第二开关的通断状态，以及通过控制设置在第二导线上的第三开关与第四开关的通断状态，可以控制在第一导线与第二导线分别加载扫描驱动信号以及图像显示信号，或者在第一导线与第二导线分别加载触控驱动信号与触控感测信号，从而实现了第一导线与第二导线显示与触控的复用，使得触控显示面板无需另外单独设置触控面板，除了可以降低触控显示面板的制程复杂度以及成本之外，还满足了对于触控显示面板薄型化的需求。
请参阅图4-5，图4为图2所示的触控显示面板1000的驱动方法的流程示意图，图5为图2所示触控显示面板1000的工作时序图。
其中，触控显示面板1000在工作时包括很多连续的工作周期P，例如Pi、Pi+1、Pi+2……，其中，i为大于等于1的自然数。本实施例以工作周期Pi为例具体说明触控显示面板1000的工作步骤。
具体地，在工作周期Pi中，包括第一时间段p1与第二时间段p2，控制触 控显示面板1000在第一时间段p1处于显示状态，并控制触控显示面板1000在第二时间段p2处于触控感测状态。
所述的驱动方法包括以下步骤：
S401、在第一时间段p1，控制触控显示面板1000包括的第一导线10上设置的第一开关11以及所述触控显示面板1000包括的第二导线20上设置的第三开关21关断，所述触控显示面板1000包括的第一导线10上设置的第二开关12与所述触控显示面板1000包括的第二导线20上设置的第四开关22导通，以使扫描驱动信号加载于所述第一导线10，通过所述第二导线20将所述图像显示信号传输至位于所述第一导线10与所述第二导线20交叉位置的像素单元30，所述触控显示面板1000进行图像显示。
需要说明的是，触控显示面板1000通过控制第一导线10中各个开关的通断，以及第二导线20中各个开关的通断，从而控制该触控显示面板1000进行图像显示或者进行触控识别。该“通断”可以理解为导通或关断。其中，该第一导线10为扫描线，该第二导线20为数据线。
其中，触控显示面板1000通过控制第一开关11以及第二开关12的通断，可以选择性控制在该第一导线10上加载的信号为扫描驱动信号或者触控驱动信号。相应地，通过控制第三开关21以及第四开关22的通断，可以选择性控制在该第二导线20上加载的信号为图像显示信号或者触控感测信号。
具体地，触控显示面板1000在第一时间段p1，通过控制第一开关11以及第三开关21关断，第二开关12以及第四开关22导通，从而将扫描驱动信号加载到该第一导线10上，并将图像显示信号加载到该第二导线20上，以使该触控显示面板1000在第一时间段p1进行图像显示。并且，在第一导线10将扫描驱动信号传输至像素单元以打开该像素单元30时，该像素单元30接收由该第二导线20输出的图像显示信号，以使该像素单元30根据该图像显示信号进行图像显示，从而使得该触控显示面板1000可以进行图像显示。
S402、在第二时间段p2，所述第一导线10与所述第二导线20构成触控感测电容，控制所述第一开关11与所述第三开关21导通，所述第二开关12与所述第四开关22关断，以使触控驱动信号加载于所述第一导线10，并从所述第二导线20输出触控感测信号，所述触控显示面板1000进行触控感测。
需要说明的是，触控显示面板1000在第二时间段p2，通过控制第一开关 11以及第三开关21导通，第二开关12以及第四开关22关断，从而将触控驱动信号加载到该第一导线10上，并将触控感测信号加载到该第二导线20，以使该触控显示面板1000在第二时间段进行触控识别。该触控感测信号为通过该第一导线10与该第二导线20交叉位置形成的触控感应电容将该第一导线10输出的触控驱动信号转化后输出至第二导线20上的。该第二时间段p2位于第一时间段p1后面。该第一时间段p1和该第二时间段p2在时间上连续且无交叉。
具体地，在第二时间段p2，触控电路40在该第一开关11导通后，输出触控驱动信号至该第一导线10，该第二导线20将触控感测信号输出至该触控电路40，以便于识别该触控显示面板1000接收的触摸操作。该触摸操作包括但不限于按压操作、滑动操作等触控操作。
更具体地，该触控电路40可以包括触控驱动电路401以及触控感测电路402。在第二时间段p2，触控驱动电路401在该第一开关11导通后，输出触控驱动信号至该第一导线10，并且该第二导线20将触控感测信号输出至该触控感测电路402，以便于识别该触控显示面板1000接收的触摸操作。
较佳地，该多条第一导线10定义为x组，每组包括n条第一导线10，该触控电路40中的触控驱动电路401分时地向各组第一导线10输出触控驱动信号。相应地，该多条第二导线20定义为y组，每组包括m条第二导线20，触控电路40中的触控感测电路402同时接收由该y组第二导线20输出的触控感测信号。其中，n、x、m、y均为大于1的正整数。需要说明的是，该多条第一导线10的数量以及该多条第二导线20的数量是根据触控显示面板1000的分辨率确定的，如图2所示，若该触控显示面板的分辨率为1920*1080，则该多条第一导线10的数量为1920条，该多条第二导线20的数量为3240条。
举例来说，如图2所示，若该多个第一导线10有1920条，则该1920条第一导线10定义成32组，包括TX1-TX32组。每组包括60条第一导线10。如图3所示，在t1至t2，触控驱动电路401向TX1组的第一导线10输出触控驱动信号。在t3至t4，触控驱动电路401向TX2组的第一导线10输出触控驱动信号。在t62至t64，触控驱动电路401向TX32组的第一导线10输出触控驱动信号。其中，该触控驱动信号包括5个脉冲信号。如图2所示，若该多个第二导线有3240条，则该3240条第二导线20定义成18组，包括 RX1-RX18组，每组包括180条第二导线20。该触控感测电路402同时地接收由该18组第二导线20输出的触控感测信号。
较佳地，在前述各开关为N型薄膜晶体管时，前述触控驱动信号处于负电位状态，从而防止像素单元30被驱动进行图像显示。如图3所示，触控驱动电路401向每组第一导线10(TX1-TX32)输出的触控驱动信号包括5个-7V的脉冲信号。
采用本发明实施例，通过分时地控制该第一开关、第二开关、第三开关、第四开关之间的通断，可以控制在第一导线与第二导线上分别加载的信号为触控驱动信号与触控感测信号，或者在第一导线与第二导线分别加载的信号为扫描驱动信号与图像显示信号，从而实现对于第一导线与第二导线显示与触控的复用，从而实现了第一导线与第二导线显示与触控的复用，使得触控显示面板无需另外单独设置触控面板，除了可以降低触控显示面板的制程复杂度以及成本之外，还满足了对于触控显示面板薄型化的需求。
以上对本发明实施例公开的一种触控显示面板及基于触控显示面板的驱动方法进行了详细介绍，以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。

Claims (10)

  1. 一种触控显示面板，其特征在于，包括：多条沿第一方向延伸且相互绝缘的第一导线、多条沿第二方向延伸且相互绝缘的第二导线以及位于所述第一导线与所述第二导线交叉位置的像素单元，所述像素单元与所述第一导线与所述第二导线电性连接；所述第一导线沿着第一方向的两端分别设置有第一开关与第二开关，所述第二导线沿着第二方向的两端分别设置第三开关与第四开关，所述第一方向垂直于所述第二方向，所述触控显示面板分时处于显示状态或触控感测状态；
    当所述触控显示面板处于显示状态，所述第一开关与第三开关处于关断状态，所述第二开关与所述第四开关处于导通状态，所述第一导线传输扫描驱动信号至所述像素单元，且所述第二导线传输图像显示信号至所述像素单元，使得所述像素单元进行图像显示；
    当所述触控显示面板处于触控感测状态，所述第一开关与所述第三开关处于导通状态，所述第二开关与所述第四开关处于关断状态，所述第一导线与所述第二导线构成触控感测电容，且所述第一导线接收触控驱动信号，所述第二导线用于输出触控感测信号，以识别触控显示面板接收的触摸操作。
  2. 根据权利要求1所述的触控显示面板，其特征在于，所述触控显示面板还包括触控电路与显示电路，所述触控电路通过第一开关与所述第一导线电性连接，且通过所述第三开关与所述第二导线电性连接，所述显示电路通过所述第二开关与所述第一导线电性连接，且通过所述第四开关与所述第二导线电性连接；
    所述第一开关，用于选择性控制所述第一导线是否与所述触控电路电性连接，所述触控电路用于在与所述第一导线电性连接时，输出触控驱动信号至所述第一导线；
    所述第二开关，用于选择性控制所述第一导线是否与所述显示电路电性连接，所述显示电路用于在与所述第一导线电性连接时，输出扫描驱动信号至所述第一导线；
    所述第三开关，用于选择性控制所述第二导线是否与所述触控电路电性连接，所述触控电路还用于在与所述第二导线电性连接时，从所述第二导线接收触控感测信号；
    所述第四开关，用于选择性控制所述第二导线是否与所述显示电路电性连接，所述显示电路还用于在与所述第二导线电信连接时，输出图像显示信号至所述第二导线。
  3. 根据权利要求2所述的触控显示面板，其特征在于，
    在第一时间段，所述触控显示面板处于显示状态，所述第一开关处于关断状态，所述第一导线与所述触控电路电性断开，所述第二开关处于导通状态，所述第一导线与所述显示电路电性连接，所述第一导线接收由所述显示电路输出的扫描驱动信号，并在第二时间段，所述触控显示面板处于触控感测状态，所述第一开关处于导通状态，所述第一导线与所述触控电路电性连接，所述第二开关处于关断状态，所述第一导线与所述显示电路断开电性连接，所述第一导线接收由触控电路发送的触控驱动信号；
    在第一时间段，所述第三开关处于关断状态，所述第二导线与所述触控电路断开电性连接，所述第四开关处于导通状态，所述第二导线接收由所述显示电路输出的图像显示信号，并在第二时间段，所述第三开关处于导通状态，所述第二导线与所述触控电路电性连接，所述第四开关处于关断状态，所述第二导线与所述触控电路电性连接，所述第二导线输出所述触控感测信号至所述触控电路。
  4. 根据权利要求2所述的触控显示面板，其特征在于，当所述触控显示面板处于触控感测状态时，n条第一导线定义为一组，所述多条沿第一方向延伸且相互绝缘的第一导线包括x组，每一组的各第一导线同时接收由触控电路输出的触控驱动信号，m条第二导线定义为一组，所述多条沿第二方向延伸且相互绝缘的第二导线包括y组，所述y组各第二导线同时输出所述触控感测信号至所述触控电路，n、x、m、y均为大于1的正整数。
  5. 根据权利要求4所述的触控显示面板，其特征在于，所述触控电路分 时地向各组第一导线输出触控驱动信号，并同时地接收由各组第二导线输出的触控感测信号。
  6. 根据权利要求5所述的触控显示面板，其特征在于，当所述触控显示面板处于触控感测状态时，所述触控驱动信号处于负电位状态。
  7. 一种基于触控显示面板的驱动方法，其特征在于，所述触控显示面板包括多条第一导线，多条第二导线，设置在所述第一导线两端的第一开关和第二开关，设置在所述第二导线的第三开关和第四开关、位于所述第一导线和所述第二导线交叉位置的像素单元，包括多个连续的工作周期，每一个工作周期内，包括：
    在第一时间段，控制所述第一开关以及所述第三开关关断，所述第二开关与所述第四开关导通，以使扫描驱动信号加载于所述第一导线，通过所述第二导线将所述图像显示信号传输至所述像素单元，所述触控显示面板进行图像显示；
    在第二时间段，所述第一导线与所述第二导线构成触控感测电容，控制所述第一开关与所述第三开关导通，所述第二开关与所述第四开关关断，以使触控驱动信号加载于所述第一导线，并从所述第二导线输出触控感测信号，所述触控显示面板进行触控感测；其中，所述第一时间段和所述第二时间段在时间上连续且无交叉。
  8. 根据权利要求7所述的驱动方法，其特征在于，所述触控显示面板还包括触控电路与显示电路，所述方法还包括：
    控制所述第一开关通断以选择性控制所述第一导线是否与所述触控电路电性连接，以便在所述第一导线与所述触控电路电性连接时，所述触控电路将所述触控驱动信号加载于所述第一导线上；
    控制所述第二开关通断以选择性控制所述第一导线是否与所述显示电路电性连接，以便所述第一导线与所述显示电路电性连接时，所述显示电路将扫描驱动信号加载于所述第一导线上；
    控制所述第三开关通断以选择性控制所述第二导线是否与所述触控电路 电性连接，以便在所述第二导线与所述触控电路电性连接时，所述触控电路接收由所述第二导线输出的触控感测信号；
    控制所述第四开关通断以选择性控制所述第二导线是否与所述显示电路电性连接，以便所述第二导线与所述显示电路电性连接时，所述显示电路将图像显示信号加载于所述第二导线上。
  9. 根据权利要求8所述的驱动方法，其特征在于，所述方法还包括：
    将n条第一导线定义为一组，所述多条第一导线包括x组，每一组的各第一导线同时接收由触控电路输出的触控驱动信号；
    将m条第二导线定义为一组，所述多条第一导线包括x组，所述y组第二导线同时输出所述触控感测信号至所述触控电路；其中，n、x、m、y均为大于1的正整数。
  10. 根据权利要求9所述的驱动方法，其特征在于，所述触控电路分时地向各组第一导线输出所述触控驱动信号，并同时地接收由各组第二导线输出的所述触控感测信号。
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