Driving method and device of touch panel and display equipment

Abstract

The invention discloses a driving method and device of a touch panel and display equipment, and belongs to the field of display. The touch panel has a low-power-consumption gesture wake-up mode, in the low-power-consumption gesture wake-up mode, the touch panel comprises a first stage and a second stage located after the first stage, the first stage is used for representing a stage of touch scanning, the second stage is used for representing a stage of pulling up signal potential, and the touch panel comprises a gate drive circuit; the method comprises the following steps: in response to confirmation that the touch panel is switched from a first stage to a second stage, controlling a reset signal and a low-voltage signal provided for a gate drive circuit to be switched into a first level signal, and controlling an initial pulse signal, a clock signal and a latch signal to be switched into a second level signal, the voltage of the first level signal is greater than that of the second level signal. According to the invention, the disturbance of the high-potential signal to the touch scanning signal can be reduced, the situation of easy wakeup failure or false wakeup is improved, and the use experience of the product is improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a touch panel driving method, device and display equipment. Background Art

[0002] With the development of display devices, their functions are also expanding. In the low power gesture wake-up (LPWG) mode of the display device, the display device can also perform touch scanning when the screen is off, and wake up related functions through pre-set gestures. However, in a-Si (amorphous silicon) LCD (Liquid Crystal Display) devices, the touch scanning signal is easily disturbed to generate touch noise, thereby affecting the touch scanning of the display device in LPWG mode, which in turn causes wake-up failure and affects the user experience of the display device. Summary of the invention

[0003] The embodiments of the present application provide a touch panel driving method, device and display device to improve the situation where the display device is prone to wake-up failure in LPWG mode and enhance the product usage experience.

[0004] In order to solve the above technical problems, the embodiments of the present application disclose the following technical solutions:

[0005] In a first aspect, a method for driving a touch panel is provided, wherein the touch panel has a low-power gesture wake-up mode. In the low-power gesture wake-up mode, the touch panel includes a first stage and a second stage located after the first stage, wherein the first stage is used to represent a stage of performing touch scanning, and the second stage is used to represent a stage of pulling up a signal potential, and the touch panel includes a gate drive circuit; the driving method includes:

[0006] In response to confirming that the touch panel switches from the first stage to the second stage, controlling the reset signal and the low voltage signal provided to the gate driving circuit to switch to a first level signal;

[0007] The start pulse signal, the clock signal and the latch signal provided to the gate driving circuit are controlled to be switched to second level signals, and the voltage of the first level signal is greater than the voltage of the second level signal.

[0008] In combination with the first aspect, in the low-power gesture wake-up mode, the touch panel further includes a third stage located before the first stage, the third stage is used to represent a stage of stopping touch scanning, and the third stage, the first stage, and the second stage are alternately arranged; the driving method further includes:

[0009] In response to confirming that the touch panel switches from the second stage to the third stage, controlling both the reset signal and the low voltage signal to switch from the first level signal to the second level signal;

[0010] The start pulse signal, the clock signal and the latch signal are controlled to maintain the second level signal.

[0011] In combination with the first aspect, the driving method further includes:

[0012] In response to confirming that the touch panel switches from the third stage to the first stage, the reset signal, the low voltage signal, the start pulse signal, the clock signal and the latch signal are all controlled to switch to a first scan signal, which is a superposition signal of a touch scan signal and the second level signal.

[0013] In combination with the first aspect, the driving method further includes:

[0014] In response to confirming that the touch panel switches from the third stage to the first stage, the data signal provided to the touch panel and the common voltage signal provided to the touch panel are controlled to switch to a second scanning signal, the second scanning signal is a superposition signal of the touch scanning signal and a third level signal, and the voltage of the third level signal is greater than the voltage of the second level signal and less than the voltage of the first level signal.

[0015] In combination with the first aspect, the touch scanning signal is a pulse square wave signal.

[0016] In combination with the first aspect, in the low-power gesture wake-up mode, the touch panel further includes a sleep stage, and the sleep stage is located before the first third stage; the driving method further includes:

[0017] In response to confirming that the touch panel switches from the sleep stage to the third stage, the reset signal, the low voltage signal, the start pulse signal, the clock signal and the latch signal are all controlled to switch to the second level signal.

[0018] In combination with the first aspect, the driving method further includes:

[0019] In response to the touch panel entering the sleep stage, the reset signal, the low voltage signal, the start pulse signal, the clock signal and the latch signal are controlled to switch to a third level signal, and the voltage of the third level signal is greater than the voltage of the second level signal and less than the voltage of the first level signal.

[0020] In combination with the first aspect, the driving method further includes:

[0021] In response to the touch panel entering the sleep stage, controlling the data signal provided to the touch panel and the common voltage signal provided to the touch panel to switch to the third level signal;

[0022] In response to confirming that the touch panel switches from the sleep stage to the third stage, or in response to confirming that the touch panel switches from the first stage to the second stage, or in response to confirming that the touch panel switches from the second stage to the third stage, the data signal provided to the touch panel and the common voltage signal provided to the touch panel are controlled to maintain the third level signal.

[0023] In combination with the first aspect, the first level signal is a positive voltage signal, the second level signal is a negative voltage signal, and the third level signal is a ground signal.

[0024] In a second aspect, a driving device for a touch panel is provided, wherein the touch panel has a low-power gesture wake-up mode. In the low-power gesture wake-up mode, the touch panel includes a first stage and a second stage located after the first stage, wherein the first stage is used to represent a stage of performing touch scanning, and the second stage is used to represent a stage of pulling up a signal potential, wherein the touch panel includes a gate driving circuit; and the driving device includes:

[0025] A first timing control module, configured to control the reset signal and the low voltage signal provided to the gate driving circuit to switch to a first level signal in response to confirming that the touch panel switches from the first stage to the second stage;

[0026] The second timing control module is used to control the start pulse signal, clock signal and latch signal provided to the gate driving circuit to switch to a second level signal, and the voltage of the first level signal is greater than the voltage of the second level signal.

[0027] In a third aspect, a display device is provided, comprising a touch panel and a driving device for the touch panel as described in the second aspect.

[0028] One of the above technical solutions has the following advantages or beneficial effects:

[0029] Compared with the prior art, the present application provides a driving method for a touch panel, which has a low-power gesture wake-up mode. In the low-power gesture wake-up mode, the touch panel includes a first stage and a second stage located after the first stage, the first stage is used to characterize the stage of touch scanning, and the second stage is used to characterize the stage of pulling up the signal potential, and the touch panel includes a gate drive circuit; the driving method includes: in response to confirming that the touch panel switches from the first stage to the second stage, controlling the reset signal and the low voltage signal provided to the gate drive circuit to switch to a first level signal; controlling the start pulse signal, the clock signal and the latch signal provided to the gate drive circuit to switch to a second level signal, and the voltage of the first level signal is greater than the voltage of the second level signal. The touch panel driving method provided in the present application can still clear the charge through the reset signal and the low voltage signal in the second stage to avoid the screen flickering phenomenon when the screen is turned on after the LPWG mode. At the same time, the potential of the start pulse signal, the clock signal and the latch signal are lowered, which can reduce the disturbance of the high potential signal on the touch scanning signal, thereby improving the touch scanning accuracy of the LPWG mode, improving the situation of easy wake-up failure or false wake-up, and improving the product usage experience.

[0030] A touch panel driving device in the present application can not only avoid the screen flickering phenomenon when the screen is turned on after the LPWG mode, but also reduce the disturbance of the high-voltage signal to the touch scanning signal, thereby improving the touch scanning accuracy of the LPWG mode, improving the situation of easy wake-up failure or false wake-up, and improving the product usage experience.

[0031] A display device of the present application is not prone to screen flickering when the screen is turned on after the LPWG mode, and the wake-up accuracy of the LPWG mode is high, providing a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 A schematic diagram of the structure of a display device according to an embodiment of the present application;

[0034] Figure 2 An exemplary structural diagram of a gate drive circuit provided in an embodiment of the present application;

[0035] Figure 3 A schematic diagram of a driving timing sequence of a signal in a LPWG mode provided in an embodiment of the present application;

[0036] Figure 4 It is a schematic diagram of the overall process of the driving method of the touch panel according to the embodiment of the present application;

[0037] Figure 5 A schematic diagram of a driving timing sequence of a signal in another LPWG mode provided in an embodiment of the present application;

[0038] Figure 6 A schematic diagram of a specific process of a method for driving a touch panel according to an embodiment of the present application;

[0039] Figure 7 A schematic diagram of the structure of a driving device for a touch panel provided in an embodiment of the present application;

[0040] Reference numerals:

[0041] 10-touch panel; 20-driving device; 201-first timing control module; 202-second timing control module; 11-gate driving circuit; 111-first signal terminal; 112-second signal terminal; 113-third signal terminal; 114-fourth signal terminal; 12-source driving circuit; 13-data line; 14-scanning line; 15-pixel unit. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0043] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, and at least one means one, two or more, unless otherwise clearly and specifically defined.

[0044] See also Figure 1 , Figure 1Schematic diagram of the structure of the display device of the embodiment of the present application. The display device of the embodiment of the present application includes a touch panel 10 and a driving device 20. The touch panel 10 includes a gate driving circuit 11, a source driving circuit 12, a data line 13, a scan line 14 and a pixel unit 15. The gate driving circuit 11 is used to provide a scan driving signal for the scan line 14, and the source driving circuit 12 is used to provide a data signal for the data line 13. The scan driving signal and the data signal are used to drive the pixel unit 15 to emit light. The driving device 20 is used to provide corresponding input signals to the gate driving circuit 11 and the source driving circuit 12, and to provide a common voltage signal to the common electrode (i.e., the VCOM electrode) of the touch panel 10. Among them, the gate driving circuit 11 can be represented by a GOA (Gate on Array) circuit 11. It can be understood that the driving device 20 can be set in a timing controller (TCON).

[0045] In the embodiment of the present application, the touch panel 10 may be an amorphous silicon liquid crystal panel and integrated with a touch function. The user may open or use various functions of the touch panel 10 by performing gesture operations on the touch panel 10. Typically, the touch panel 10 has a low-power gesture wake-up mode, i.e., an LPWG mode. In the LPWG mode, the touch panel 10 may include a first stage and a second stage after the first stage. The first stage is used to characterize the stage of performing touch scanning, which may be represented by a scanning stage; the second stage is used to characterize the stage of raising the signal potential, which may be represented by an All Gate on stage. The All Gate on stage is used to release the accumulated charge in the surface to prevent the screen from flickering when the touch screen is awakened.

[0046] In some examples, in the LPWG mode, the touch panel 10 further includes a third stage before the first stage, and the third stage, the first stage, and the second stage are alternately arranged. The third stage is used to characterize the stage of stopping touch scanning, which can be represented by a nonscaning stage. In other words, the scanning cycle includes the third stage, the first stage, and the second stage, and then the sequence of the third stage, the first stage, the second stage, the third stage, the first stage, the second stage, etc. can be continuously cycled until the screen is awakened and lit.

[0047] In some examples, the touch panel 10 in the LPWG mode also includes a sleep stage, which is used to characterize the screen-off stage just after entering the LPWG mode, and can be represented by the Sleep in stage. The sleep stage is located before the first third stage. That is to say, after entering the LPWG mode, the touch panel 10 first enters the sleep stage, and then continuously cycles in the order of the third stage, the first stage, the second stage, the third stage, the first stage, the second stage, etc. until the screen is awakened and lit.

[0048] It is understandable that after the touch panel 10 captures the gesture operation in the first stage, it will continue to complete the second stage, then wake up and light up the screen, and exit the LPWG mode. The duration of each stage can be preset, and the embodiment of the present application does not specifically limit the duration of each stage.

[0049] For example, the touch panel 10 can enter the LPWG mode in response to a first gesture operation of the user. The first gesture operation may include a click operation on the power button or a preset screen-off gesture operation, etc., which is not specifically limited in the embodiment of the present application. After entering the LPWG mode, the touch panel 10 switches to the screen-off state, but touch scanning can still be performed.

[0050] In addition, the touch panel 10 can exit the LPWG mode and enter the touch display mode in response to the user's second gesture operation. After entering the touch display mode, the touch panel 10 switches to a lit state. The second gesture operation may include a double-click operation on the touch panel 10 or other preset wake-up gesture operations, etc., which are not specifically limited in the embodiments of the present application.

[0051] See also Figure 2 , Figure 2 An example structural diagram of a gate drive circuit provided in an embodiment of the present application. In some examples, the gate drive circuit 11 has a first signal terminal 111, a second signal terminal 112, a third signal terminal 113, and a fourth signal terminal 114, the first signal terminal 111 is used to input a low voltage signal VGL, the two second signal terminals 112 are used to input latch signals LC1 and LC2, the third signal terminal 113 is used to input a clock signal CK, and the fourth signal terminal 114 is used to input a reset signal RESET. The gate drive circuit 11 includes transistors T11, T21, T32, T33, T41, T42, T43, T51, T52, T53, T54, T61, T62, T63, T64, TrQ, TrG, and a capacitor Cbt. Among them, the start pulse signal STV is a start pole signal for the transistor T11, and therefore is not reflected in the gate drive circuit 11.

[0052] It is understandable that, in addition to the above-mentioned example structure, the gate driving circuit 11 may also adopt other structures, which is not specifically limited in the embodiments of the present application.

[0053] As a preface to the embodiments of the present application, a driving timing of an LPWG mode is provided. Figure 3 , Figure 3A schematic diagram of a driving timing of a signal in LPWG mode provided in an embodiment of the present application. Exemplarily, in the Sleep in stage, the start pulse signal STV, the clock signal CK, the latch signals LC1 and LC2, the reset signal RESET, the low voltage signal VGL provided to the gate drive circuit, and the switch signal SW, the data signal Source, and the common voltage signal VCOM provided to the touch panel are all GND voltage (ground voltage); in the non scanning stage, the start pulse signal STV, the clock signal CK, the latch signals LC1 and LC2, the reset signal RESET, the low voltage signal VGL, and the switch signal SW are all AVEE voltage (negative voltage), and the data signal Source and the common voltage signal VCOM are all GND voltage, which is usually 0V; in the scanning stage, the start pulse signal STV, the clock signal CK, the latch signals LC1 and LC2, the reset signal RESET, the low voltage signal VGL, and the switch signal SW are all superimposed signals of the AVEE voltage and the touch scanning signal LFD, and the data signal Source and the common voltage signal VCOM are all superimposed signals of the GND voltage and the touch scanning signal LFD, wherein the touch scanning signal LFD is used to capture gesture signals to realize gesture wake-up; in the All Gate In the on phase, the start pulse signal STV, the clock signal CK, the latch signals LC1 and LC2, the reset signal RESET, and the low voltage signal VGL are all AVDD voltage (positive voltage), the switch signal SW is AVEE voltage, and the data signal Source and the common voltage signal VCOM are all GND voltage. Among them, the AVDD voltage, the GND voltage, and the AVEE voltage decrease in sequence.

[0054] However, it is found that the LPWG mode is prone to noise in the touch screen stage, namely TP Noise, because the LPWG mode is prone to changes in the touch scan signal waveform caused by insufficient IC (Integrated Circuit, chip) driving capability, and the touch scan signal is easily disturbed by high-voltage signals. The noise in the touch screen stage will cause the touch panel 10 to fail to report points or report points incorrectly, resulting in the situation of being unable to touch the screen or accidentally touching the screen, which in turn causes wake-up failure or false wake-up, affecting the user experience of the touch panel 10.

[0055] In view of this, an embodiment of the present application provides a driving method for a touch panel, which improves the disturbance of the high potential signal in the second stage to the touch scanning signal by further optimizing the driving timing of the LPWG mode, thereby avoiding the screen flickering phenomenon when the screen is turned on after the LPWG mode, and reducing the disturbance of the high potential signal to the touch scanning signal, thereby improving the situation of wake-up failure or false wake-up, and improving the product usage experience, thereby solving at least part of the above-mentioned problems.

[0056] Please also read Figure 4 and Figure 5 , Figure 4 Schematic diagram of the overall process of the touch panel driving method according to the embodiment of the present application. Figure 5 Another driving timing diagram of a signal in LPWG mode provided in an embodiment of the present application. The driving method specifically includes the following steps:

[0057] Step 401: In response to confirming that the touch panel switches from the first stage to the second stage, the reset signal and the low voltage signal provided to the gate driving circuit are controlled to switch to the first level signal.

[0058] In some examples, the first level signal is a positive voltage signal, i.e., an AVDD signal, and the voltage of the first level signal is an AVDD voltage. That is to say, when the touch panel switches from the scanning stage to the All Gate on stage, the voltage of the reset signal RESET and the voltage of the low voltage signal VGL are switched to the AVDD voltage. In this way, in the All Gate on stage, the reset signal RESET and the low voltage signal VGL can still release the accumulated charges in the surface, thereby clearing the charges to avoid the screen flickering phenomenon when the touch screen wakes up after the LPWG mode.

[0059] Step 402: Control the start pulse signal, clock signal and latch signal provided to the gate driving circuit to switch to second level signals, and the voltage of the first level signal is greater than the voltage of the second level signal.

[0060] In some examples, the second level signal is a negative voltage signal, i.e., an AVEE signal, and the voltage of the second level signal is an AVEE voltage. That is, when the touch panel switches from the scanning stage to the All Gate on stage, the voltage of the control start pulse signal STV, the voltage of the clock signal CK, and the voltages of the latch signals LC1 and LC2 are switched to the AVEE voltage.

[0061] It should be noted that there is no restriction on the execution order of step 401 and step 402.

[0062] Through the above scheme, by lowering the potential of the start pulse signal STV, the clock signal CK and the latch signals LC1 and LC2, the disturbance of the high potential signal on the touch scanning signal can be reduced, thereby improving the touch scanning accuracy of the LPWG mode, improving the situation of easy wake-up failure or false wake-up, and improving the product usage experience.

[0063] See also Figure 6 , Figure 6The specific flow chart of the driving method of the touch panel of the embodiment of the present application is shown in FIG. In some embodiments, while executing step 401 and step 402, the following may also be included:

[0064] Step 403: Control the data signal provided to the touch panel and the common voltage signal provided to the touch panel to maintain a third level signal.

[0065] It should be noted that step 403, step 401 and step 402 are not limited in the order of execution.

[0066] In some examples, the third level signal is a ground signal, i.e., a GND signal, and the voltage of the third level signal is a GND voltage. That is, when the touch panel switches from the scanning stage to the All Gate on stage, the voltage of the control data signal Source and the voltage of the common voltage signal VCOM are maintained at the GND voltage. In this way, the disturbance of the high potential signal to the touch scanning signal can be reduced, thereby improving the touch scanning accuracy of the LPWG mode.

[0067] In some embodiments, after step 401 and step 402, the driving method may further include the following steps:

[0068] Step 404: In response to confirming that the touch panel switches from the second stage to the third stage, control the reset signal and the low voltage signal to switch from the first level signal to the second level signal.

[0069] Step 405: Control the start pulse signal, the clock signal and the latch signal to maintain a second level signal.

[0070] Step 406: Control the data signal and the common voltage signal to maintain a third level signal.

[0071] Specifically, when the touch panel switches from the All Gate on stage to the non scanning stage, the start pulse signal STV, the clock signal CK, the latch signals LC1 and LC2, the reset signal RESET, and the low voltage signal VGL are controlled to be the AVEE voltage, and the data signal Source and the common voltage signal VCOM are controlled to be the GND voltage until the non scanning stage ends. In this way, the disturbance of the high potential signal to the touch scanning signal can be reduced, thereby improving the touch scanning accuracy of the LPWG mode.

[0072] In some embodiments, before step 401, the driving method may further include the following steps:

[0073] Step 407: In response to confirming that the touch panel switches from the third stage to the first stage, the reset signal, low voltage signal, start pulse signal, clock signal and latch signal are all switched to the first scan signal, which is a superposition signal of the touch scan signal and the second level signal.

[0074] In some examples, the touch scanning signal LFD is a pulse square wave signal. In this way, the gesture operation is captured by a regular pulse square wave signal, so that better gesture recognition accuracy can be achieved.

[0075] Step 408: Control the data signal provided to the touch panel and the common voltage signal provided to the touch panel to switch to a second scanning signal, where the second scanning signal is a superposition signal of the touch scanning signal and the third level signal.

[0076] Specifically, when the touch panel switches from the non-scanning stage to the scanning stage, the reset signal RESET, the low voltage signal VGL, the start pulse signal STV, the clock signal CK, and the latch signals LC1 and LC2 are all superimposed signals of the AVEE voltage and the touch scanning signal LFD, and the data signal Source and the common voltage signal VCOM are all superimposed signals of the GND voltage and the touch scanning signal LFD until the scanning stage ends. In this way, the touch scanning signal LFD is superimposed on each output signal in the scanning stage, so that the scanning stage can perform high-precision touch scanning normally and is not easily disturbed, thereby facilitating accurate and sensitive wake-up gesture recognition.

[0077] In some embodiments, before step 407, the driving method may further include the following steps:

[0078] Step 409: In response to confirming that the touch panel switches from the sleep stage to the third stage, the reset signal, the low voltage signal, the start pulse signal, the clock signal and the latch signal are all switched to the second level signal.

[0079] Step 410: Control the data signal and the common voltage signal to maintain a third level signal.

[0080] Specifically, when the touch panel switches from the Sleep in stage to the non scanning stage, the start pulse signal STV, the clock signal CK, the latch signals LC1 and LC2, the reset signal RESET, and the low voltage signal VGL are controlled to be the AVEE voltage, and the data signal Source and the common voltage signal VCOM are controlled to be the GND voltage until the non scanning stage ends.

[0081] In some embodiments, before step 409, the driving method may further include the following steps:

[0082] Step 411: In response to the touch panel entering the sleep stage, the reset signal, the low voltage signal, the start pulse signal, the clock signal and the latch signal are all switched to third level signals.

[0083] Step 412: Control the data signal provided to the touch panel and the common voltage signal provided to the touch panel to switch to a third level signal.

[0084] Specifically, when the touch panel enters the Sleep in stage, the control start pulse signal STV, the clock signal CK, the latch signals LC1 and LC2, the reset signal RESET, the low voltage signal VGL, the data signal Source, and the common voltage signal VCOM are all GND voltage until the Sleep in stage ends.

[0085] In some embodiments, the driving method may further include:

[0086] In response to confirming that the touch panel enters the sleep stage Sleep in, the control switch signal SW is switched to the third level signal, that is, the control switch signal SW is the GND voltage, until the Sleep in stage ends. In response to confirming that the touch panel switches from the sleep stage Sleep in to the third stage non scanning, the control switch signal SW is switched to the second level signal, that is, the control switch signal SW is switched to the AVEE voltage, until the non scanning stage ends. In response to confirming that the touch panel switches from the third stage non scanning to the first stage scanning, the control switch signal SW is switched to the first scanning signal, that is, the control switch signal SW is switched to the superposition signal of the touch scanning signal LFD and the AVEE voltage, until the scanning stage ends. In response to confirming that the touch panel switches from the first stage scanning to the second stage All Gate on, the control switch signal SW is switched to the second level signal, that is, the control switch signal SW is switched to the AVEE voltage, until the All Gate on stage ends. In response to confirming that the touch panel switches from the second stage All Gate on to the third stage non scanning, the switch signal SW is controlled to maintain the second level signal, that is, the switch signal SW is controlled to maintain the AVEE voltage until the non scanning stage ends, and then switches to the scanning stage, and the cycle continues. In this way, the timing of the switch signal SW can be prevented from affecting the timing of other signals in the plane.

[0087] In some embodiments, the driving method of the embodiment of the present application further includes:

[0088] In LPWG mode, in response to the touch panel detecting a second gesture operation, after the second stage All Gate on after the second gesture operation ends, the touch panel is controlled to exit LPWG mode, enter normal display mode, and continue to provide the touch panel with various signals in normal display mode.

[0089] It can be understood that the touch panel driving method provided in the embodiment of the present application can still clear the charge through the reset signal and the low voltage signal in the second stage to avoid the screen flickering phenomenon when the screen is lit after the LPWG mode. At the same time, the potential of the start pulse signal, the clock signal and the latch signal are lowered, which can reduce the disturbance of the high potential signal on the touch scanning signal, thereby improving the touch scanning accuracy of the LPWG mode, improving the situation of easy wake-up failure or false wake-up, and improving the product usage experience.

[0090] Correspondingly, the embodiment of the present application also provides a driving device for a touch panel. Figure 7 , Figure 7 The schematic diagram of the structure of the driving device of the touch panel provided in the embodiment of the present application is as follows: The driving device 20 comprises a first timing control module 201 and a second timing control module 202 .

[0091] The first timing control module 201 is used for controlling the reset signal and the low voltage signal provided to the gate driving circuit to switch to the first level signal in response to confirming that the touch panel switches from the first stage to the second stage.

[0092] The second timing control module 202 is used to control the start pulse signal, the clock signal and the latch signal provided to the gate driving circuit to switch to the second level signal, and the voltage of the first level signal is greater than the voltage of the second level signal.

[0093] In some embodiments, in the low-power gesture wake-up mode, the touch panel further includes a third stage before the first stage, and the third stage is used to represent the stage of stopping touch scanning. The third stage, the first stage, and the second stage are alternately arranged; the first timing control module 201 is also used to:

[0094] In response to confirming that the touch panel switches from the second stage to the third stage, controlling the reset signal and the low voltage signal to switch from the first level signal to the second level signal;

[0095] The second timing control module 202 is further used to control the start pulse signal, the clock signal and the latch signal to maintain a second level signal.

[0096] In some embodiments, the first timing control module 201 and the second timing control module 202 are further used to:

[0097] In response to confirming that the touch panel switches from the third stage to the first stage, the reset signal, low voltage signal, start pulse signal, clock signal and latch signal are all switched to the first scan signal, which is a superposition signal of the touch scan signal and the second level signal.

[0098] In some embodiments, the driving method further includes a third timing control module, wherein the third timing control module is used to:

[0099] In response to confirming that the touch panel switches from the third stage to the first stage, the data signal provided to the touch panel and the common voltage signal provided to the touch panel are controlled to switch to a second scanning signal, the second scanning signal is a superposition signal of the touch scanning signal and the third level signal, and the voltage of the third level signal is greater than the voltage of the second level signal and less than the voltage of the first level signal.

[0100] In some embodiments, the touch scan signal is a pulse square wave signal.

[0101] In some embodiments, in the low-power gesture wake-up mode, the touch panel further includes a sleep stage, which is located before the first third stage; the first timing control module 201 and the second timing control module 202 are further used to:

[0102] In response to confirming that the touch panel switches from the sleep stage to the third stage, the reset signal, the low voltage signal, the start pulse signal, the clock signal and the latch signal are all switched to second level signals.

[0103] In some embodiments, the first timing control module 201 and the second timing control module 202 are further used to:

[0104] In response to the touch panel entering the sleep stage, the reset signal, low voltage signal, start pulse signal, clock signal and latch signal are all switched to third level signals, whose voltage is greater than that of the second level signal and less than that of the first level signal.

[0105] In some embodiments, the third timing control module is further configured to:

[0106] In response to the touch panel entering the sleep stage, controlling the data signal provided to the touch panel and the common voltage signal provided to the touch panel to switch to a third level signal;

[0107] In response to confirming that the touch panel switches from the sleep stage to the third stage, or in response to confirming that the touch panel switches from the first stage to the second stage, or in response to confirming that the touch panel switches from the second stage to the third stage, the data signal provided to the touch panel and the common voltage signal provided to the touch panel are controlled to maintain a third level signal.

[0108] In some embodiments, the first level signal is a positive voltage signal, the second level signal is a negative voltage signal, and the third level signal is a ground signal.

[0109] It can be understood that the driving device of the touch panel in the embodiment of the present application can not only avoid the screen flickering phenomenon when the screen is turned on after the LPWG mode, but also reduce the disturbance of the high-voltage signal to the touch scanning signal, thereby improving the touch scanning accuracy of the LPWG mode, improving the situation of easy wake-up failure or false wake-up, and improving the product usage experience.

[0110] Correspondingly, the display device of the embodiment of the present application is not prone to screen flickering when the screen is turned on after the LPWG mode, and the wake-up accuracy of the LPWG mode is high, providing a better user experience.

[0111] The display device of the embodiment of the present application can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, etc.

[0112] The above is a detailed introduction to a touch panel driving method, device and display device provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. A method for driving a touch panel, characterized in that: The touch panel has a low-power gesture wake-up mode. In the low-power gesture wake-up mode, the touch panel includes a first stage and a second stage located after the first stage. The first stage is used to represent a stage of performing touch scanning, and the second stage is used to represent a stage of pulling up the signal potential. The touch panel includes a gate drive circuit; the driving method includes: In response to confirming that the touch panel switches from the first stage to the second stage, controlling the reset signal and the low voltage signal provided to the gate driving circuit to switch to a first level signal; The start pulse signal, the clock signal and the latch signal provided to the gate driving circuit are controlled to be switched to second level signals, and the voltage of the first level signal is greater than the voltage of the second level signal.

2. The method for driving a touch panel according to claim 1, wherein: In the low-power gesture wake-up mode, the touch panel further includes a third stage located before the first stage, and the third stage is used to represent a stage of stopping touch scanning. The third stage, the first stage, and the second stage are alternately arranged; the driving method further includes: In response to confirming that the touch panel switches from the second stage to the third stage, controlling both the reset signal and the low voltage signal to switch from the first level signal to the second level signal; The start pulse signal, the clock signal and the latch signal are controlled to maintain the second level signal.

3. The method for driving a touch panel according to claim 2, wherein: The driving method further includes: In response to confirming that the touch panel switches from the third stage to the first stage, the reset signal, the low voltage signal, the start pulse signal, the clock signal and the latch signal are all controlled to switch to a first scan signal, which is a superposition signal of a touch scan signal and the second level signal.

4. The method for driving a touch panel according to claim 3, wherein: The driving method further includes: In response to confirming that the touch panel switches from the third stage to the first stage, the data signal provided to the touch panel and the common voltage signal provided to the touch panel are controlled to switch to a second scanning signal, the second scanning signal is a superposition signal of the touch scanning signal and a third level signal, and the voltage of the third level signal is greater than the voltage of the second level signal and less than the voltage of the first level signal.

5. The method for driving a touch panel according to claim 3 or 4, characterized in that: The touch scan signal is a pulse square wave signal.

6. The method for driving a touch panel according to claim 2, wherein: In the low-power gesture wake-up mode, the touch panel further includes a sleep stage, and the sleep stage is located before the first third stage; the driving method further includes: In response to confirming that the touch panel switches from the sleep stage to the third stage, the reset signal, the low voltage signal, the start pulse signal, the clock signal and the latch signal are all controlled to switch to the second level signal.

7. The method for driving a touch panel according to claim 6, wherein: The driving method further includes: In response to the touch panel entering the sleep stage, the reset signal, the low voltage signal, the start pulse signal, the clock signal and the latch signal are controlled to switch to a third level signal, and the voltage of the third level signal is greater than the voltage of the second level signal and less than the voltage of the first level signal.

8. The method for driving a touch panel according to claim 7, characterized in that: The driving method further includes: In response to the touch panel entering the sleep stage, controlling the data signal provided to the touch panel and the common voltage signal provided to the touch panel to switch to the third level signal; In response to confirming that the touch panel switches from the sleep stage to the third stage, or in response to confirming that the touch panel switches from the first stage to the second stage, or in response to confirming that the touch panel switches from the second stage to the third stage, the data signal provided to the touch panel and the common voltage signal provided to the touch panel are controlled to maintain the third level signal.

9. The method for driving a touch panel according to claim 7, wherein: The first level signal is a positive voltage signal, the second level signal is a negative voltage signal, and the third level signal is a ground signal.

10. A touch panel driving device, characterized in that: The touch panel has a low-power gesture wake-up mode. In the low-power gesture wake-up mode, the touch panel includes a first stage and a second stage located after the first stage. The first stage is used to represent a stage of performing touch scanning, and the second stage is used to represent a stage of pulling up the signal potential. The touch panel includes a gate drive circuit; the drive device includes: A first timing control module, configured to control the reset signal and the low voltage signal provided to the gate driving circuit to switch to a first level signal in response to confirming that the touch panel switches from the first stage to the second stage; The second timing control module is used to control the start pulse signal, clock signal and latch signal provided to the gate driving circuit to switch to a second level signal, and the voltage of the first level signal is greater than the voltage of the second level signal.

11. A display device, characterized in that: The invention comprises a touch panel and a driving device for the touch panel as claimed in claim 10.

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