Driving method, circuit and equipment of display touch panel and display touch equipment

Abstract

A driving method, circuit and device for a display touch panel and a display touch device.A power conversion module, a power management module, a display touch driving module and a control module are arranged in the driving circuit of the display touch panel, and the control module sends an enable signal to the power conversion module; the power supply conversion module switches an input power supply of the power supply management module into a touch power supply or a display power supply according to the enable signal, so that the power supply management module supplies power to the display touch driving module by utilizing the touch power supply or the display power supply, and then the display touch driving module can drive the In-cell type display touch panel to work; therefore, after the host is dormant, the display touch driving module is still kept online, and the display touch panel can be driven to scan so as to identify whether the display touch panel is touched or not, so that a touch awakening function is realized.

Description

Display touch panel driving method, circuit, device and display touch device Technical Field

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

[0002] With the release of the Windows 11 operating system, the wake on touch (WOT) function was first applied to electronic products (such as laptops) installed with the Windows 11 operating system. This requires that the touch (also known as Touch) module of the display touch panel in the electronic product can implement the WOT function.

[0003] According to the relative position relationship between the touch module and the display panel (also known as Display), display touch panels can be divided into in-cell (embedded) type, on-cell (embedded) type and add-on (external) type. Among them, the in-cell type display touch panel is also called an embedded capacitive touch panel. In the current mainstream motherboard design, the touch power supply and display power supply of the display touch panel are independent. In the on-cell type and add-on type display touch panels, since the touch module is independent of the display panel, after the host enters sleep mode, the display power supply is turned off and the touch power supply is maintained, and the touch module can realize the WOT function. In the in-cell type display touch panel, the analog front end (AFE) of the touch module, the scanning and other driver modules, and the source driver module of the display panel are all integrated into the touch and source driver chip (Source Readout IC, SRIC). When the host enters sleep mode, the display power supply is turned off, and then the SRIC will be powered off. At this time, the host cannot be woken up by touch. Therefore, the in-cell type display touch panel cannot be used with the win11 operating system to realize the WOT function.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide a driving method, circuit, device and display touch device for a display touch panel, which solve the problem that an In-cell type display touch panel cannot be used with the Windows 11 operating system to implement the WOT function.

[0006] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by practice of the present application.

[0007] According to a first aspect of an embodiment of the present application, a driving circuit for a display touch panel is provided, the driving circuit comprising: a power conversion module, a power management module, a display touch driving module, and a control module; the power input terminal of the power conversion module is used to connect to a display power supply and a touch power supply, the enable terminal of the power conversion module is connected to the enable terminal of the control module, the output terminal of the power conversion module is connected to the power input terminal of the display touch driving module via the power management module; the output terminal of the display touch driving module is used to connect to the display touch panel, and the display touch panel is an embedded capacitive touch panel; the touch power supply and the display power supply are respectively connected to the power input terminal of the control module; wherein,

[0008] The control module is configured to send an enable signal to the power conversion module; the power conversion module is configured to switch the input power of the power management module to the touch power supply or the display power supply according to the enable signal; and the power management module is configured to use the touch power supply or the display power supply to power the display touch driving module, so that the display touch driving module drives the display touch panel to operate.

[0009] In some embodiments of the present application, based on the aforementioned scheme, the enable signal includes a first enable signal and a second enable signal, and the control module is further used to send the first enable signal to the power conversion module when the host is in a sleep state, or to send the second enable signal to the power conversion module when it is detected that the display touch panel is touched; the power conversion module is also used to switch the input power of the power management module from the display power supply to the touch power supply according to the first enable signal, or to switch the input power of the power management module from the touch power supply to the display power supply according to the second enable signal.

[0010] In some embodiments of the present application, based on the aforementioned scheme, the control end of the control module is connected to the controlled end of the display touch driving module, and the control module is further used to send a display off instruction to the display touch driving module, so that the display touch driving module controls the display function of the display touch panel to be turned off according to the display off instruction.

[0011] In some embodiments of the present application, based on the aforementioned solution, the display touch driving module includes touch and source driving chips, which are respectively connected to the control end of the control module, the power management module and the display touch panel.

[0012] In some embodiments of the present application, based on the aforementioned solution, the display touch driving module further includes a timing control unit, which is respectively connected to the control end of the control module, the power management module and the display touch panel.

[0013] In some embodiments of the present application, based on the aforementioned scheme, the control module includes a microcontroller unit and a first step-down unit, the first power input terminal of the microcontroller unit is connected to the touch power supply via the first step-down unit, the second power input terminal of the microcontroller unit is connected to the touch power supply, and the control terminal of the microcontroller unit is respectively connected to the touch and source driver chip and the timing control unit.

[0014] In some embodiments of the present application, based on the aforementioned solution, the display touch driving module further includes a timing control unit and a second step-down unit, the timing control unit is connected to the display power supply via the second step-down unit, and the timing control unit is also connected to the display touch panel.

[0015] In some embodiments of the present application, based on the aforementioned scheme, the control module includes a microcontroller unit and a first step-down unit, the first power input terminal of the microcontroller unit is connected to the touch power supply via the first step-down unit, the second power input terminal of the microcontroller unit is connected to the touch power supply, and the control terminal of the microcontroller unit is connected to the touch and source driver chip.

[0016] According to a second aspect of an embodiment of the present application, a method for driving a display touch panel is provided, which is applied to the above-mentioned driving circuit of the display touch panel. The method includes:

[0017] An enable signal is sent to the power conversion module, so that the power conversion module switches the input power of the power management module to the display power or the touch power according to the enable signal.

[0018] In some embodiments of the present application, based on the aforementioned solution, the enable signal includes a first enable signal and a second enable signal, and sending the enable signal to the power conversion module so that the power conversion module switches the input power of the power management module to the display power supply or the touch power supply according to the enable signal includes:

[0019] The first enable signal is sent to the power conversion module so that the power conversion module switches the input power of the power management module from the display power supply to the touch power supply according to the first enable signal, or the second enable signal is sent to the power conversion module so that the power conversion module switches the input power of the power management module from the touch power supply to the display power supply according to the second enable signal.

[0020] In some embodiments of the present application, based on the above solution, after sending the first enable signal to the power conversion module, the method further includes:

[0021] A display off instruction is sent to the touch and source driver chip and the timing control unit, so that the touch and source driver chip and the timing control unit control the display touch panel to turn off the display function according to the display off instruction.

[0022] In some embodiments of the present application, based on the above solution, after sending the display off instruction to the touch and source driver chip and the timing control unit, the method further includes:

[0023] A first scanning frequency is sent to the touch control and source driver chip, so that the touch control and source driver chip reduces the scanning frequency of the display touch panel according to the first scanning frequency.

[0024] According to a third aspect of an embodiment of the present application, a driving device for a display touch panel is provided, which is applied to the driving circuit of the display touch panel described above. The driving device includes:

[0025] The control unit is configured to send an enable signal to the power conversion module, so that the power conversion module switches the input power of the power management module to the display power or the touch power according to the enable signal.

[0026] According to the fourth aspect of an embodiment of the present application, a driving device for a display touch panel is provided, comprising a processor and a memory, wherein the memory stores computer program instructions that can be executed by the processor, and when the processor executes the computer program instructions, it implements instructions for the above-mentioned driving method for the display touch panel.

[0027] According to a fifth aspect of the embodiments of the present application, a display touch device is provided, comprising a display touch panel and a driving device for the above-mentioned display touch panel, wherein the display touch panel is an embedded capacitive touch panel.

[0028] In this application, a power conversion module, a power management module, a display touch driver module, and a control module are provided in the driver circuit of the display touch panel. The control module sends an enable signal to the power conversion module. The power conversion module switches the input power of the power management module to the touch power supply or the display power supply according to the enable signal, so that the power management module uses the touch power supply or the display power supply to power the display touch driver module, thereby enabling the display touch driver module to drive the in-cell type display touch panel to operate. Through the above technical solution, after the host goes into sleep mode, the display touch driver module remains online and can drive the display touch panel to scan to identify whether the display touch panel is touched, thereby realizing the WOT function.

[0029] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are incorporated into and constitute a part of the specification, illustrating embodiments consistent with the present application and, together with the specification, explaining the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0031] FIG1 shows a functional block diagram of a driving circuit for a display touch panel in one embodiment;

[0032] FIG2 shows a schematic structural diagram of a driving circuit of the display touch panel in FIG1 ;

[0033] FIG3 shows a signal flow diagram of FIG2 when the host is in a dormant state;

[0034] FIG4 shows another structural schematic diagram of a driving circuit of the display touch panel in FIG1 ;

[0035] FIG5 shows a signal flow diagram of FIG4 when the host is in a dormant state;

[0036] FIG6 shows a scan diagram of the touch panel in FIG1 when the touch function is activated;

[0037] FIG7 shows a scanning diagram of the touch function of the touch panel in FIG1 in an idle state;

[0038] FIG8 is a schematic flow chart showing a method for driving a display touch panel in one embodiment;

[0039] FIG9 is a schematic flow chart showing a method for driving a display touch panel in another embodiment;

[0040] FIG10 shows a block diagram of a driving device for displaying a touch panel in one embodiment;

[0041] FIG11 shows a schematic structural diagram of a driving device for a display touch panel in one embodiment.

[0042] Description of Figure Numbers: DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0044] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner.In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps etc. can be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0045] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically separate entities. That is, these functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0046] The flowcharts shown in the accompanying drawings are for illustrative purposes only and do not necessarily include all contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may be decomposed, while others may be combined or partially combined. Therefore, the actual execution order may vary depending on the actual situation.

[0047] It should also be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that shown or described.

[0048] FIG1 shows a functional block diagram of a driving circuit for a display touch panel in one embodiment. As shown in FIG1 , the driving circuit for the display touch panel may include: a power conversion module 10, a power management module 20, a display touch driving module 30, and a control module 40; the power input terminal of the power conversion module 10 is used to connect to the display power supply Vcc and the touch power supply VTSP, the enable terminal of the power conversion module 10 is connected to the enable terminal of the control module 40, the output terminal of the power conversion module 10 is connected to the power input terminal of the display touch driving module 30 via the power management module 20; the output terminal of the display touch driving module 30 is used to connect to the display touch panel 50. The display touch panel 50 is an embedded capacitive touch panel; the touch power supply VTSP and the display power supply Vcc are respectively connected to the power input terminal of the control module 40; wherein the control module 40 is used to send an enable signal to the power conversion module 10 when the host is in a dormant state; the power conversion module 10 is used to switch the input power of the power management module 20 to the touch power supply VTSP or the display power supply Vcc according to the enable signal; the power management module 20 is used to use the touch power supply VTSP or the display power supply Vcc to power the display touch driving module 30, so that the display touch driving module 30 drives the display touch panel 50 to work.

[0049] It is understandable that in electronic products installed with the win11 operating system, WOT is a newly supported function for users to choose. When the user chooses to turn on the WOT function, the system can be woken up by touching the display touch panel. At present, on-cell and add-on display touch panels can realize the WOT function, while in-cell display touch panels (i.e., embedded capacitive touch panels) cannot realize the WOT function. In the embodiment of the present application, through the design of the driving circuit of the display touch panel, when the host is in a dormant state and the touch power supply VTSP is not powered off, the power conversion module 10 selects the touch power supply VTSP to power the power management module 20, so that the display touch drive module 30 remains online when the host is dormant, and can drive the display touch panel 50 to scan to identify whether the burst point (i.e., the finger area) on the display touch panel 50 is touched, thereby realizing the WOT function.

[0050] The touch electrodes of the embedded capacitive touch panel are embedded in the liquid crystal cell, and can detect touch operations using capacitive sensing. In some embodiments, the touch electrodes of the embedded capacitive touch panel are reused with common electrodes, and the touch electrodes and display signal lines are connected to the touch and display driver integration (TDDI) chip.

[0051] The power conversion module 10 can be implemented by a combination of a P-channel Metal Oxide Semiconductor (PMOS) and an N-channel Metal Oxide Semiconductor (NMOS). The embodiment of the present application does not limit the combination of PMOS and NMOS.

[0052] The power management module 20 may be a power management IC (PMIC) for supplying power to the display touch driving module 30 .

[0053] The display touch driving module 30 may include components such as an SRIC, a timing controller 32 (Tcon), a touch modulation IC (TMIC), and a level conversion chip, and is used to drive the display touch panel 50 to realize display function and touch wake-up function.

[0054] It should be noted that the power input end of the power conversion module 10 is used to connect to the display power supply Vcc and the touch power supply VTSP, which means that the power input end of the power conversion module 10 can be connected to the display power supply Vcc and the touch power supply VTSP, that is, the power input end of the power conversion module 10 can be already connected to the display power supply Vcc and the touch power supply VTSP, or it can be connected to the display power supply Vcc and the touch power supply VTSP when it is necessary to complete the driving of the display touch panel 50.

[0055] The output end of the display touch driving module 30 is used to connect to the display touch panel 50, which means that the output end of the display touch driving module 30 can be connected to the display touch panel 50, that is, the output end of the display touch driving module 30 can be already connected to the display touch panel 50, or can be connected to the display touch panel 50 when the display touch panel 50 needs to be driven.

[0056] In some embodiments, the enable signal includes a first enable signal and a second enable signal. The control module 40 is further used to send the first enable signal to the power conversion module 10 when the host is in a sleep state, or to send the second enable signal to the power conversion module 10 when it is detected that the display touch panel 50 is touched; the power conversion module 10 is also used to switch the input power of the power management module 20 from the display power supply Vcc to the touch power supply VTSP according to the first enable signal, or to switch the input power of the power management module from the touch power supply VTSP to the display power supply Vcc according to the second enable signal.

[0057] In some embodiments, the control module 40 can also be used to send a second enable signal to the power conversion module 10 when the host is in normal operating mode, so that the power conversion module 10 selects the display power supply Vcc as the input power supply of the power management module 20 according to the second enable signal.

[0058] Assuming that the first enable signal is a low-level signal and the second enable signal is a high-level signal, when the host is in normal operation mode, the control module 40 can send a high-level signal to the power conversion module 10, and the power conversion module 10 selects the display power supply Vcc as the input power supply of the power management module 20; after the host enters the sleep state, the control module 40 can send a low-level signal to the power conversion module 10, and the power conversion module 10 switches the input power supply of the power management module 20 from the display power supply Vcc to the touch power supply VTSP; when the explosive point on the display touch panel 50 is touched, the control module 40 sends a high-level signal to the power conversion module 10, and the power conversion module 10 selects the display power supply Vcc as the input power supply of the power management module 20.

[0059] In some embodiments, the control end of the control module 40 is connected to the controlled end of the display touch driving module 30, and the control module 40 is also used to send a display off instruction to the display touch driving module 30, so that the display touch driving module 30 controls the display function of the display touch panel 50 to be turned off according to the display off instruction.

[0060] It can be understood that by connecting the control end of the control module 40 to the controlled end of the display touch driving module 30, the control module 40 can send control instructions to the display touch driving module 30 to control the display touch panel 50 through the display touch driving module 30, wherein the control instructions include but are not limited to display off instructions, scanning frequency, etc.

[0061] The embodiment of the present application realizes that the display touch driving module remains online after the host is in sleep mode through the design of the display touch panel driving circuit, and can drive the display touch panel to scan to identify whether the display touch panel is touched, thereby realizing the WOT function.

[0062] Figure 2 shows a structural schematic diagram of the driving circuit of the display touch panel 50 in Figure 1. As shown in Figure 2, the display touch driving module 30 may include a touch and source driver chip 31, and the touch and source driver chip 31 is respectively connected to the control end of the control module 40, the power management module 20 and the display touch panel 50.

[0063] It can be understood that the touch and source driver chip 31 (i.e., SRIC) integrates the driver of the touch function of the display touch panel 50 and partial driver of the display function. By connecting to the power management module 20, the power management module 20 supplies power to the SRIC, which can ensure the normal operation of the SRIC; by connecting to the control end of the control module 40, the SRIC can receive the control instructions sent by the control module 40; by connecting to the display touch panel 50, the SRIC can drive the display touch panel 50 according to the control instructions to realize the touch function and display function.

[0064] In some embodiments, the display touch driving module 30 may further include a timing control unit 32 , which is connected to the control terminal of the control module 40 , the power management module 20 , and the display touch panel 50 , respectively.

[0065] It can be understood that the timing control unit 32 (i.e., Tcon) can be a timing controller. By connecting to the power management module 20, the power management module 20 supplies power to Tcon, which can ensure the normal operation of Tcon; by connecting to the control end of the control module 40, Tcon can receive control instructions sent by the control module 40; by connecting to the display touch panel 50, Tcon can turn off part of the drive of the display function of the display touch panel 50 according to the control instruction.

[0066] In some embodiments, the control module 40 may include a microcontroller unit 41 and a first step-down unit 42. The first power input terminal of the microcontroller unit 41 is connected to the touch power supply VTSP via the first step-down unit 42. The second power input terminal of the microcontroller unit 41 is connected to the touch power supply VTSP. The control terminal of the microcontroller unit 41 is respectively connected to the touch and source driver chip 31 and the timing control unit 32.

[0067] It is understood that the first step-down unit 42 is used to reduce the voltage provided by the touch power supply VTSP. In the implementation process, the first step-down unit 42 can reduce the voltage provided by the touch power supply VTSP to 1.8V and then supply power to the micro control unit 41.

[0068] In some embodiments, the display touch driving module 30 may further include a touch modulation chip (not labeled) and a level conversion chip (not labeled), wherein the touch modulation chip is connected to the power management module 20 and the display touch panel 50 respectively, and the level conversion chip is connected to the power management module 20 and the display touch panel 50 respectively.

[0069] FIG3 shows the signal flow diagram of FIG2 when the host is in a sleep state. The following is based on FIG3 to explain the implementation principle of the WOT function in the embodiment of the present application: After the host enters the sleep state, the microcontroller unit 41 receives the "TP Sleep" command sent by the host and enters the WOT mode. The host controls the display power supply Vcc to be powered off. At the same time, the microcontroller unit 41 generates a first enable signal Low and sends it to the power conversion module 10. The power conversion module 10 selects the touch power supply VTSP as the input power supply of the power management module 20. The microcontroller unit 41 notifies the timing control unit 32 and the touch and source driver chip 31 to turn off the drive of the display function, the display function of the display touch panel 50 is turned off, and the host enters the idle mode (i.e., the display function is turned off and the touch function is idle). The scanning frequency of the display touch panel 50 can be reduced from 120Hz to 30Hz.

[0070] In idle mode, if the microcontroller unit 41 detects that the explosive point of the display touch panel 50 is touched, it will fully wake up the touch function of the display touch panel 50. At this time, the touch function is activated, the scanning frequency of the display touch panel 50 can be switched back to 120Hz for scanning, and the microcontroller unit 41 sends a finger information packet (also called a finger packet) to the host to wake up the host. The host controls the display power supply Vcc to power on again and sends a wake-up instruction to the microcontroller unit 41. After receiving the wake-up instruction, the microcontroller unit 41 generates a second enable signal High and sends it to the power conversion module 10. The power conversion module 10 selects the display power supply Vcc as the input power supply of the power management module 20. The microcontroller unit 41 wakes up the timing control unit 32 and the related drivers of the display function in the touch and source driver chip 31, and the host enters the normal operating mode. In normal operating mode, the display function of the display touch panel 50 is turned on and the touch function is activated, thus realizing the WOT function.

[0071] The embodiment of the present application realizes the control of the touch and source driver chips and the timing control unit in the display touch driver module by the microcontroller through the relevant circuit design of the touch and source driver chips and the timing control unit, thereby reducing the power consumption and cost when implementing the WOT function.

[0072] Figure 4 shows a structural schematic diagram of the driving circuit of the display touch panel 50 in Figure 1. As shown in Figure 4, the display touch driving module 30 may include a touch and source driver chip 31, and the touch and source driver chip 31 is respectively connected to the control end of the control module 40, the power management module 20 and the display touch panel 50.

[0073] In some embodiments, the display touch driving module 30 may further include a timing control unit 32 and a second step-down unit 33 . The timing control unit 32 is connected to the display power supply Vcc via the second step-down unit 33 . The timing control unit 32 is also connected to the display touch panel 50 .

[0074] It is understandable that the second step-down unit 33 is used to reduce the voltage provided by the display power supply Vcc. During implementation, the second step-down unit 33 can reduce the voltage provided by the touch power supply VTSP to 1.8V and 0.9V respectively to supply power to the timing control unit 32 .

[0075] In some embodiments, the control module 40 includes a microcontroller unit 41 and a first step-down unit 42. The first power input terminal of the microcontroller unit 41 is connected to the touch power supply VTSP via the first step-down unit 42. The second power input terminal of the microcontroller unit 41 is connected to the touch power supply VTSP. The control terminal of the microcontroller unit 41 is connected to the touch and source driver chip 31.

[0076] It is understood that, unlike Figure 2 , the timing control unit 32 in Figure 2 is powered by the power management module 20, while the timing control unit 32 in Figure 4 is powered by the second step-down unit 33. When the display power supply Vcc is turned off, the second step-down unit 33 is de-energized, and the timing control unit 32 is shut down. At this time, the microcontroller unit 41 does not need to control the timing control unit 32 to shut down, and therefore does not need to be connected to the timing control unit 32. At high resolutions and high refresh rates, the timing control unit 32 can be powered by the external second step-down unit 33.

[0077] Figure 5 shows the signal flow diagram of Figure 4 when the host is in a dormant state. As shown in Figure 5 , when the host is in a dormant state, the display power supply Vcc is turned off, the second step-down unit 33 is powered off, and the timing control unit 32 is turned off. The power management module 20 only supplies power to the touch and source driver chip 31, the touch modulation chip, and the level conversion chip. The principle of implementing the WOT function by the display touch panel drive circuit shown in Figures 4 and 5 can be referred to in the previous embodiment and will not be repeated here.

[0078] FIG6 shows a measured scanning diagram of the touch function of the display touch panel in FIG1 in an activated state. As shown in FIG6 , in the activated state, if the scanning frequency is 120 Hz, the display touch panel can scan 8 touch slots (also called touch slots) within one frame.

[0079] FIG7 shows a scanning measurement diagram of the touch function of the display touch panel in FIG1 in an idle state. As shown in FIG7 , in the idle state, if the scanning frequency is 30 Hz, the display touch panel can scan two touch slots within two frames.

[0080] The embodiment of the present application simplifies the control logic of the microcontroller unit and improves the response speed and efficiency of the WOT function by designing an independent power supply for the timing control unit.

[0081] Figure 8 shows a flow chart of a method for driving a display touch panel in one embodiment. The following description will be given by taking the application of the method for driving a display touch panel to a microcontroller unit in the driving circuit of the above-mentioned display touch panel as an example. As shown in Figure 8, the method for driving a display touch panel may include step 801: sending an enable signal to a power conversion module so that the power conversion module switches the input power of the power management module to a display power supply or a touch power supply according to the enable signal.

[0082] It can be understood that the enable signal may include a first enable signal and a second enable signal, wherein the second enable signal is different from the first enable signal, and when the second enable signal is a high level signal High, the first enable signal is a low level signal Low.

[0083] In some embodiments, the microcontroller unit can send a first enable signal to the power conversion module when the host is in a sleep state, or send a second enable signal to the power conversion module when the display touch panel is touched, or send a second enable signal to the power conversion module when the host is in normal operation mode.

[0084] During implementation, after the host enters sleep mode, the MCU receives the "TP Sleep" command from the host and enters WOT mode. The host then controls the display power supply to be turned off. Simultaneously, the MCU generates a first enable signal. Upon receiving this first enable signal, the power conversion module selects the touch power supply as the input power source for the power management module.

[0085] During the implementation process, the microcontroller unit can determine whether the display touch panel is touched based on whether the sensing amount of the burst point of the display touch panel is greater than a preset value, and generate a second enable signal when the display touch panel is touched. After receiving the second enable signal, the power conversion module selects the display power as the input power of the power management module.

[0086] During the implementation process, when the host is in normal operation mode, the micro control unit still sends a second enable signal to the power conversion module, and after receiving the second enable signal, the power conversion module still selects the display power as the input power of the power management module.

[0087] In some embodiments, after sending the first enable signal to the power conversion module, the driving method of the display touch panel may further include the following steps: sending a display off instruction to the touch and source driver chip and the timing control unit, so that the touch and source driver chip and the timing control unit control the display function of the display touch panel to be turned off according to the display off instruction.

[0088] It is understandable that after the timing control unit and the touch and source driver chip receive the display off instruction, they control the display function of the touch panel to be turned off, which can reduce power consumption in the WOT mode.

[0089] In some embodiments, after sending a display shutdown instruction to the touch and source driver chip and the timing control unit, the driving method of the display touch panel may further include the following steps: sending a first scanning frequency to the touch and source driver chip so that the touch and source driver chip reduces the scanning frequency of the display touch panel according to the first scanning frequency.

[0090] It is understandable that when the host is in normal operation mode, the scanning frequency of the display touch panel is relatively high. When the host enters the sleep state, reducing the scanning frequency of the display touch panel can also achieve the purpose of saving power.

[0091] The embodiment of the present application realizes the use of touch power to power the power management module after the host is in sleep mode through the design of a driving method for the display touch panel, so that the display touch driving module can also remain online and drive the display touch panel to scan, thereby realizing the WOT function.

[0092] FIG9 is a schematic flow diagram of a method for driving a display touch panel in another embodiment. As shown in FIG9 , the WOT function is implemented as follows: When the host is in normal operating mode, the display function of the display touch panel is turned on, and the touch function is activated. The microcontroller unit sends a second enable signal High to the power conversion module. The power conversion module selects the display power supply as the input power supply for the power management module, and the display touch panel driver circuit and the display touch panel operate normally.

[0093] After the host enters sleep mode, the MCU receives a touch function sleep (TP Sleep) command from the host and enters WOT mode. The host then powers down the display power supply, while the MCU instructs the power conversion module to select the touch power supply as the input power for the power management module. The MCU then notifies the timing control unit and the touch and source driver chips to shut down the display function. The display touch panel is then turned off, and the host enters idle mode (display off, touch idle). The scan frequency of the display touch panel can be reduced from 120Hz to 30Hz.

[0094] In idle mode, if the microcontroller detects that the induction value dv of the burst point of the display touch panel is greater than the preset value, it will fully wake up the touch function of the display touch panel. At this time, the touch function is activated, and the scanning frequency of the display touch panel can be switched back to 120Hz for scanning, and the microcontroller sends a finger information packet to the host to wake up the host. The host controls the display power supply to power on again and sends a wake-up command to the microcontroller. After receiving the wake-up command, the microcontroller controls the power conversion module to select the display power supply as the input power supply of the power management module. The microcontroller wakes up the timing control unit and the related drivers of the display function in the touch and source driver chip, and the host enters the normal operating mode. In normal operating mode, the display function is turned on and the touch function is activated, thus realizing the WOT function.

[0095] The following describes an embodiment of the device of the present application, which can be used to implement the display touch panel driving method in the above embodiment of the present application. For details not disclosed in the embodiment of the device of the present application, please refer to the embodiment of the display touch panel driving method in the above embodiment of the present application.

[0096] Referring to Figure 10 , a block diagram of a display touch panel driving device according to an embodiment of the present application is shown. As shown in Figure 10 , the display touch panel driving device according to an embodiment of the present application may include: a control unit 101 configured to send an enable signal to a power conversion module, causing the power conversion module to switch the input power of the power management module to display power or touch power according to the enable signal.

[0097] In some embodiments of the present application, based on the aforementioned scheme, the control unit 101 is further used to send a first enable signal to the power conversion module when the host is in a sleep state, so that the power conversion module switches the input power of the power management module from the display power supply to the touch power supply according to the first enable signal, or, when it is detected that the display touch panel is touched, send a second enable signal to the power conversion module, so that the power conversion module switches the input power of the power management module from the touch power supply to the display power supply according to the second enable signal.

[0098] In some embodiments of the present application, based on the aforementioned scheme, the control unit 101 is also used to send a display off instruction to the touch and source driver chip and the timing control unit, so that the touch and source driver chip and the timing control unit control the display function of the touch panel to be turned off according to the display off instruction.

[0099] In some embodiments of the present application, based on the above-mentioned solution, the control unit 101 is further used to send a first scanning frequency to the touch and source driver chip, so that the touch and source driver chip reduces the scanning frequency of the display touch panel according to the first scanning frequency.

[0100] Based on the same inventive concept, an embodiment of the present application also provides a driving device for a display touch panel. Referring to Figure 11, a structural schematic diagram of the driving device for a display touch panel in an embodiment of the present application is shown. The driving device for a display touch panel includes one or more memories 1104, one or more processors 1102, and at least one computer program (computer program instruction) stored in the memory 1104 and executable on the processor 1102. When the processor 1102 executes the computer program, the above method is implemented.

[0101] In FIG11 , a bus architecture (represented by bus 1100) is shown. Bus 1100 may include any number of interconnected buses and bridges. Bus 1100 links various circuits, including one or more processors represented by processor 1102 and memory represented by memory 1104. Bus 1100 may also link various other circuits, such as peripherals, voltage regulators, and power management circuits, all of which are well known in the art and, therefore, will not be described further herein. Bus interface 1105 provides an interface between bus 1100 and receiver 1101 and transmitter 1103. Receiver 1101 and transmitter 1103 may be the same component, namely a transceiver, providing a unit for communicating with various other devices over a transmission medium. Processor 1102 is responsible for managing bus 1100 and general processing, while memory 1104 may be used to store data used by processor 1102 when performing operations.

[0102] Based on the same inventive concept, an embodiment of the present application provides a display touch device, including a display touch panel and a driving device for the above-mentioned display touch panel, wherein the display touch panel is an embedded capacitive touch panel.

[0103] Based on the same inventive concept, an embodiment of the present application provides a computer-readable storage medium, in which at least one computer program instruction is stored. The at least one computer program instruction is loaded and executed by a processor to implement the operations performed by the previous method.

[0104] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on or transmitted via a computer-readable medium. Other examples and implementations are within the scope and spirit of this application and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwiring, or a combination of any of these. Furthermore, the functional units may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit.

[0105] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0106] The units described as separate components may or may not be physically separate, and the components of the control device may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0107] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk, and other media that can store computer program instructions.

[0108] The above are merely examples of the present application and are not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of the claims of the present application.

Claims

1. A driving circuit for a display touch panel, characterized in that: include: A power conversion module, a power management module, a display touch driving module and a control module; the power input terminal of the power conversion module is used to connect with the display power supply and the touch power supply, the enable terminal of the power conversion module is connected with the enable terminal of the control module, and the output terminal of the power conversion module is connected with the power input terminal of the display touch driving module via the power management module; The output end of the display touch driving module is used to connect to the display touch panel, and the display touch panel is an embedded capacitive touch panel; the touch power supply and the display power supply are respectively connected to the power input end of the control module; wherein, The control module is used to send an enable signal to the power conversion module; the power conversion module is used to switch the input power of the power management module to the touch power supply or the display power supply according to the enable signal; the power management module is used to use the touch power supply or the display power supply to power the display touch driving module, so that the display touch driving module drives the display touch panel to work.

2. The driving circuit of the display touch panel according to claim 1, characterized in that: The enable signal includes a first enable signal and a second enable signal. The control module is further used to send the first enable signal to the power conversion module when the host is in a sleep state, or to send the second enable signal to the power conversion module when it is detected that the display touch panel is touched; the power conversion module is also used to switch the input power of the power management module from the display power supply to the touch power supply according to the first enable signal, or to switch the input power of the power management module from the touch power supply to the display power supply according to the second enable signal.

3. The driving circuit of the display touch panel according to claim 2, characterized in that: The control end of the control module is connected to the controlled end of the display touch driving module, and the control module is also used to send a display off instruction to the display touch driving module, so that the display touch driving module controls the display function of the display touch panel to be turned off according to the display off instruction.

4. The driving circuit of the display touch panel according to claim 3, characterized in that: The display touch driving module includes a touch control and source driving chip, and the touch control and source driving chip are respectively connected to the control end of the control module, the power management module and the display touch panel.

5. The driving circuit of the display touch panel according to claim 4, characterized in that: The display touch driving module further includes a timing control unit, which is respectively connected to the control end of the control module, the power management module and the display touch panel.

6. The driving circuit of the display touch panel according to claim 5, characterized in that: The control module includes a micro control unit and a first step-down unit, the first power input terminal of the micro control unit is connected to the touch power supply via the first step-down unit, the second power input terminal of the micro control unit is connected to the touch power supply, and the control terminal of the micro control unit is respectively connected to the touch and source driver chip and the timing control unit.

7. The driving circuit of the display touch panel according to claim 4, characterized in that: The display touch driving module further includes a timing control unit and a second step-down unit. The timing control unit is connected to the display power supply via the second step-down unit. The timing control unit is also connected to the display touch panel.

8. The driving circuit of the display touch panel according to claim 7, characterized in that: The control module includes a micro control unit and a first step-down unit, the first power input terminal of the micro control unit is connected to the touch power supply via the first step-down unit, the second power input terminal of the micro control unit is connected to the touch power supply, and the control terminal of the micro control unit is connected to the touch and source driver chip.

9. A method for driving a display touch panel, characterized in that: A driving circuit for a display touch panel as claimed in any one of claims 1 to 8, wherein the method comprises: An enable signal is sent to the power conversion module, so that the power conversion module switches the input power of the power management module to the display power or the touch power according to the enable signal.

10. The method for driving a display touch panel according to claim 9, characterized in that: The enable signal includes a first enable signal and a second enable signal, and sending the enable signal to the power conversion module so that the power conversion module switches the input power of the power management module to the display power or the touch power according to the enable signal includes: When the host is in sleep mode, the first enable signal is sent to the power conversion module, so that the power conversion module switches the input power of the power management module from the display power supply to the touch power supply according to the first enable signal; or, when it is detected that the display touch panel is touched, the second enable signal is sent to the power conversion module, so that the power conversion module switches the input power of the power management module from the touch power supply to the display power supply according to the second enable signal.

11. The method for driving a display touch panel according to claim 10, characterized in that: After sending the first enable signal to the power conversion module, the method further includes: Send a display off instruction to the touch and source driver chip and the timing control unit so that the touch The control and source driving chip and the timing control unit control the display function of the display touch panel to be turned off according to the display turn-off instruction.

12. The method for driving a display touch panel according to claim 11, characterized in that: After sending the display off instruction to the touch and source driver chip and the timing control unit, the method further includes: A first scanning frequency is sent to the touch control and source driver chip, so that the touch control and source driver chip reduces the scanning frequency of the display touch panel according to the first scanning frequency.

13. A driving device for a display touch panel, characterized in that: A driving circuit for a display touch panel as claimed in any one of claims 1 to 8, the device comprising: The control unit is used to send an enable signal to the power conversion module, so that the power conversion module switches the input power of the power management module to the display power or the touch power according to the enable signal.

14. A driving device for a display touch panel, comprising a processor and a memory, characterized in that: The memory stores computer program instructions that can be executed by the processor, and when the processor executes the computer program instructions, the processor implements the method according to any one of claims 9 to 12.

15. A display touch device, characterized in that: The invention comprises a display touch panel and a driving device of the display touch panel as claimed in claim 14, wherein the display touch panel is an embedded capacitive touch panel.

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