Driving method of touch display device and touch display device

Abstract

The invention provides a driving method of a touch display device and the touch display device.The driving method comprises the steps that in the state that the input voltage of a time schedule controller is a preset high potential, in response to a first touch instruction, the input voltage of a touch module is changed into a preset low potential; and / or, in the state that the input voltage of the time schedule controller is the preset high potential, the input voltage of the touch control module is changed to the preset high potential in response to the second touch control instruction. The invention provides a driving method of a touch display device and the touch display device. The problem that the touch function of the touch display device cannot be normally used after the touch display device is awakened in a dormancy mode is solved.

Description

Technical Field

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

[0002] In the related art, when the laptop computer with an embedded touch screen (IncellTouch Panel) is closed, the system enters sleep mode. When the laptop input voltage is powered off, the system sends a human interface device (HumanInterfaceDevice, referred to as HID) instruction to turn off the touch function to the liquid crystal module (Liquid Crystal Module, LCM). Since the touch module and display module of the embedded touch screen share a timing controller and power supply, the laptop input voltage has been powered off before the system sends the HID instruction, resulting in the touch module being unable to respond, and the interaction between the touch screen and the system fails. Similarly, when the laptop computer is opened, the system exits the sleep mode. At this time, the power supply of the touch module must be powered on before the laptop input voltage, and the HID instruction to turn on the touch function is sent to the LCM, but at this time the laptop input voltage has not been powered on and cannot be responded, and the interaction between the touch screen and the system will fail again. Since both interactions failed, the system will not be able to recognize the touch function of the touch screen, resulting in the laptop being unable to use the touch function normally after waking up from sleep. Summary of the invention

[0003] The embodiments of the present application provide a driving method of a touch display device and a touch display device to solve the problem in the related art that the touch display device cannot recognize the touch function after waking up from sleep mode.

[0004] To solve the above problems, the technical solutions provided by this application are as follows:

[0005] In a first aspect, the present application provides a driving method for a touch display device, wherein the touch display device comprises: the touch display device comprises at least: a touch module and a timing controller; the driving method comprises: when the input voltage of the timing controller is a preset high potential, in response to a first touch instruction, the input voltage of the touch module is changed to a preset low potential; and / or, when the input voltage of the timing controller is a preset high potential, in response to a second touch instruction, the input voltage of the touch module is changed to a preset high potential.

[0006] In one embodiment, before the input voltage of the touch module is changed to a preset low potential, the driving method further includes: in response to a sleep instruction, the touch display device enters a sleep mode.

[0007] In one embodiment, after the input voltage of the touch module is changed to a preset low potential, the driving method further includes: after the input voltage of the touch module is changed to the preset low potential for a first preset time, in response to a first control instruction, the input voltage of the timing controller is changed to a preset low potential.

[0008] In one embodiment, the first preset time is greater than 20 ms.

[0009] In one embodiment, in response to the sleep instruction, before the touch display device enters the sleep mode, the method further includes: generating the sleep instruction according to the conduction of the sleep switch of the display device.

[0010] In one embodiment, before the input voltage of the touch module is changed to a preset high potential, the driving method further includes: in response to a wake-up instruction, the display device exits the sleep mode.

[0011] In one embodiment, before the input voltage of the touch module is changed to a preset high potential, the driving method further includes: in response to a second control instruction, the input voltage of the timing controller is changed to a preset high potential, and after the input voltage of the timing controller is changed to the preset high potential for a second preset time, the input voltage of the touch module is changed to the preset high potential.

[0012] In one embodiment, the second preset time is greater than 100 ms.

[0013] In one embodiment, in response to the wake-up instruction, before the display device exits the sleep mode, the method further includes: generating the wake-up instruction according to the disconnection of the sleep switch of the display device.

[0014] In a second aspect, the present application further provides a touch display device for implementing the driving method of the above-mentioned display device, wherein the touch display device comprises at least: a display panel, a touch module and a timing controller, wherein the touch module is electrically connected to the timing controller; the timing controller is configured to control the display of the display panel; the touch module is configured to, when the input voltage of the timing controller is a preset high potential, in response to a first touch instruction, change the input voltage of the touch module to a preset low potential; and / or, when the input voltage of the timing controller is a preset high potential, in response to a second touch instruction, change the input voltage of the touch module to a preset high potential.

[0015] In one embodiment, the touch display device also includes: a system chip, which is electrically connected to the display panel, the touch module and the timing controller; the system chip is configured to, in response to the sleep instruction, cause the touch display device to enter a sleep mode and generate a first touch instruction to the timing driver; and / or, in response to the wake-up instruction, cause the display device to exit the sleep mode.

[0016] In one embodiment, the touch display device also includes: a power management chip, which is electrically connected to the display panel, the system chip, the touch module and the timing controller; the power management chip is configured to, after the input voltage of the touch module is changed to a preset low potential for a first preset time, respond to a first control instruction to change the input voltage of the timing controller to a preset low potential; and / or, after the display device exits sleep mode, respond to the second control instruction to change the input voltage of the timing controller to a preset high potential.

[0017] In one embodiment, the system chip is further configured to generate the second touch instruction to the power management chip to change the input voltage of the touch module to a preset high potential after the power management chip changes the input voltage of the timing controller to a preset high potential for a second preset time.

[0018] In one embodiment, the touch display device further includes: a sensing unit and a sleep switch, the sleep switch being electrically connected to the sensing unit, and the sensing unit being electrically connected to the system chip; the sensing unit being configured to generate the sleep instruction according to the conduction of the sleep switch of the display device; and / or to generate the wake-up instruction according to the disconnection of the sleep switch of the display device.

[0019] In one embodiment, the sleep switch is a magnetic cover on the touch display device, and the sensing unit includes at least one magnetic sensor.

[0020] In one embodiment, the sleep switch is a physical button disposed on the touch display device, and the sensing unit includes at least one voltage sensor.

[0021] In one embodiment, the display panel of the touch display device at least provides a human-machine interface, the sleep switch is a virtual button in the human-machine interface, and the sensing unit includes at least one voltage sensor.

[0022] The present application provides a driving method of a touch display device and a touch display device, wherein the touch display device at least includes: a touch module and a timing controller; the driving method includes: when the input voltage of the timing controller is a preset high potential, in response to a first touch instruction, the input voltage of the touch module is changed to a preset low potential; and / or, when the input voltage of the timing controller is a preset high potential, in response to a second touch instruction, the input voltage of the touch module is changed to a preset high potential. Without increasing the components used in the touch display device, the present application improves the driving method of the touch display device, so that during the power-on and power-off process of the touch display device, the touch panel and the system chip can interact normally, thereby enabling the touch display device to use the touch function normally after waking up from sleep. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Attached Figure 1 is a timing diagram of a driving method of a touch display device in an embodiment of the present application;

[0025] Attached Figure 2 This is a flow chart of a method for driving a touch display device in an embodiment of the present application;

[0026] Attached Figure 3 This is a schematic diagram of the module structure of the touch display device in the embodiment of the present application;

[0027] Attached Figure 4 Schematic diagram of the structural distribution of the touch display device in the embodiment of the present application.

[0028] Description of reference numerals:

[0029] 100, touch display device; 110, display panel; 120, touch module; 130, timing controller; 140, system chip; 150, power management chip; 160, sensing unit; 170, sleep switch. DETAILED DESCRIPTION

[0030] 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.

[0031] Reference Figure 1 As shown, according to the first aspect of the present application, a driving method of a touch display device 100 is provided, wherein the touch display device 100 at least includes: a touch module 120 and a timing controller 130;

[0032] Specifically, the driving method includes: when the input voltage of the timing controller 130 is a preset high potential, in response to a first touch instruction, the input voltage of the touch module 120 is changed to a preset low potential; and / or, when the input voltage of the timing controller 130 is a preset high potential, in response to a second touch instruction, the input voltage of the touch module 120 is changed to a preset high potential.

[0033] Specifically, in some embodiments of the present application, before the input voltage of the touch module 120 is changed to a preset low potential, the driving method further includes: in response to a sleep instruction, the touch display device 100 enters a sleep mode. More specifically, in response to the sleep instruction, before the touch display device 100 enters the sleep mode, it further includes: generating a sleep instruction according to the conduction of the sleep switch 170 of the display device.

[0034] In some embodiments of the present application, after the input voltage of the touch module 120 is changed to a preset low potential, the driving method further includes: after the input voltage of the touch module 120 is changed to the preset low potential for a first preset time, in response to the first control instruction, the input voltage of the timing controller 130 is changed to the preset low potential. It should be noted that the first preset time is greater than 20ms.

[0035] In addition, in some embodiments of the present application, before the input voltage of the touch module 120 is changed to a preset high potential, the driving method further includes: in response to a wake-up instruction, the display device exits the sleep mode. More specifically, before the display device exits the sleep mode in response to the wake-up instruction, it further includes: generating a wake-up instruction according to the disconnection of the sleep switch 170 of the display device.

[0036] In some embodiments of the present application, before the input voltage of the touch module 120 is changed to a preset high potential, the driving method further includes: in response to a second control instruction, the input voltage of the timing controller 130 is changed to a preset high potential, and after the input voltage of the timing controller 130 is changed to the preset high potential for a second preset time, the input voltage of the touch module 120 is changed to the preset high potential. It should be noted that the second preset time is greater than 100ms.

[0037] Reference Figure 3 and Figure 4As shown, according to the second aspect of the present application, a touch display device 100 is provided, which is used to implement the driving method of any of the above embodiments. The touch display device 100 has all the beneficial effects of the above driving method, which will not be described in detail in the present application.

[0038] Specifically, in some embodiments of the present application, the touch display device 100 at least includes: a display panel 110, a touch module 120 and a timing controller 130, and the touch module 120 is electrically connected to the timing controller 130. Specifically, the timing controller 130 is configured to control the display of the display panel 110; the touch module 120 is configured to, when the input voltage of the timing controller 130 is a preset high potential, in response to a first touch instruction, change the input voltage of the touch module 120 to a preset low potential; and / or, when the input voltage of the timing controller 130 is a preset high potential, in response to a second touch instruction, change the input voltage of the touch module 120 to a preset high potential.

[0039] Specifically, in some embodiments of the present application, the touch display device 100 also includes: a system chip 140, which is electrically connected to the display panel 110, the touch module 120 and the timing controller 130; the system chip 140 is configured to, in response to a sleep instruction, cause the touch display device 100 to enter a sleep mode and generate a first touch instruction to the timing driver; and / or, in response to a wake-up instruction, cause the display device to exit the sleep mode.

[0040] Specifically, in some embodiments of the present application, the touch display device 100 further includes: a power management chip 150, which is electrically connected to the display panel 110, the system chip 140, the touch module 120 and the timing controller 130; the power management chip 150 is configured to, after the input voltage of the touch module 120 is changed to a preset low potential for a first preset time, respond to a first control instruction, change the input voltage of the timing controller 130 to a preset low potential; and / or, after the display device exits the sleep mode, respond to a second control instruction, change the input voltage of the timing controller 130 to a preset high potential. Based on this embodiment, the system chip 140 is also configured to, after the power management chip 150 changes the input voltage of the timing controller 130 to a preset high potential for a second preset time, generate a second touch instruction to the power management chip 150 to change the input voltage of the touch module 120 to a preset high potential.

[0041] More specifically, in the above embodiment, the touch display device 100 also includes: a sensing unit 160 and a sleep switch 170, the sleep switch 170 is electrically connected to the sensing unit 160, and the sensing unit 160 is electrically connected to the system chip 140; the sensing unit 160 is configured to generate a sleep instruction according to the conduction of the sleep switch 170 of the display device; and / or, generate a wake-up instruction according to the disconnection of the sleep switch 170 of the display device.

[0042] In some embodiments of the present application, the sleep switch 170 is a magnetic cover on the touch display device 100 , and the sensing unit 160 includes at least one magnetic sensor.

[0043] In some embodiments of the present application, the sleep switch 170 is a physical button disposed on the touch display device 100 , and the sensing unit 160 includes at least one voltage sensor.

[0044] In some embodiments of the present application, the display panel 110 of the touch display device 100 provides at least one human-machine interface, the sleep switch 170 is a virtual button in the human-machine interface, and the sensing unit 160 includes at least one voltage sensor.

[0045] Based on the above touch display device 100, refer to Figure 2 As shown, the touch display method of the present application can be specifically as follows:

[0046] S100: The sensing unit 160 detects whether the sleep switch 170 of the display device is turned on.

[0047] Reference Figure 2 In this step, when the sleep switch 170 of the display device is detected to be turned on, the sensing unit 160 generates a sleep instruction and sends it to the system chip 140, corresponding to Figure 1 In the timing diagram, the falling edge of the signal Lid, that is, the moment when the sensing unit 160 detects the turn-on moment of the sleep switch 170 of the touch display device 100, and then referring to Figure 3 At this time, the sleep instruction generated by the sensing unit 160 is sent to the system chip 140.

[0048] When the sleep switch 170 of the display device is detected to be turned off, the sensing unit 160 generates a wake-up instruction and sends it to the system chip 140, corresponding to Figure 1 In the example, the rising edge of the signal Lid, that is, the sensing unit 160 detects the closing moment of the sleep switch 170 of the touch display device 100. Similarly, in Figure 3 The sensing unit 160 generates a wake-up command and sends it to the system chip 140 .

[0049] It should be noted that the turning on or off of the sleep switch 170 is an external operation, and only when the external operation occurs will the corresponding signal be issued or generated and sensed by the sensing unit 160. During the continuous sleep or use of the touch display panel 110, therefore, based on the consideration of improving efficiency and reducing costs, the detection of the state of the sleep switch 170 by the sensing unit 160 is not an active detection process.

[0050] S200 : In response to the sleep instruction, the system chip 140 causes the display device to enter the sleep mode.

[0051] Reference Figure 2 and Figure 3 In this step, the system chip 140 receives the sleep command sent by the sensing unit 160, that is, generates a touch function shutdown command and sends it to the timing driver. The touch function shutdown command is Figure 1 In the first signal change part of the HID signal, it should be noted that the HID signal can be high level valid or low level valid.

[0052] S300 : In response to the touch function shut down instruction sent by the system chip 140 , the power management chip 150 shuts down the input voltage Vstp of the touch panel, and after waiting for a first preset time T1 , the power management chip 150 shuts down the input voltage Vin of the timing controller 130 to shut down the display panel 110 .

[0053] Reference Figure 2 and Figure 3 In this step, in order to allow sufficient interaction time between the display panel 110 and the system chip 140 before the display panel 110 is turned off, the first preset time T1 needs to be greater than 20ms. Figure 1 In the embodiment, the first preset time T1 is the time from when the HID signal takes effect to when the input voltage of the timing controller 130 changes from a high level to a low level.

[0054] S400: In response to the wake-up instruction, the system chip 140 causes the display device to exit the sleep mode;

[0055] Reference Figure 2 and Figure 3 In this step, the system chip 140 receives the wake-up command sent by the sensing unit 160, and the system chip 140 controls the power management chip 150 to conduct the input voltage Vin input to the timing controller 130, corresponding to Figure 1 In the example, the input voltage Vin of the timing controller 130 changes from a low level to a high level.

[0056] S500 : The power management chip 150 conducts the input voltage Vin input to the timing controller 130 to turn on the display panel 110 , and after waiting for a second preset time T2 , in response to the touch function start instruction sent by the system chip 140 , the power management chip 150 conducts the input voltage Vstp of the touch panel.

[0057] Reference Figure 2 and Figure 3 In this step, after receiving the wake-up instruction, the system chip 140 will first control the power management chip 150 to conduct the input voltage Vin to the timing controller 130, thereby turning on the display panel 110, and then wait for the second preset time T2, the system chip 140 will control the power management chip 150 to conduct the input voltage Vstp to the touch panel, so that the touch function of the touch display device 100 is restored. In order to allow the display panel 110 to have enough interaction time with the system chip 140 after it is turned on, the second preset time T2 needs to be greater than 100ms. Corresponding to Figure 1 The second preset time T2 is from the rising edge moment of the input voltage Vin of the timing controller 130 to the moment when the touch function instruction is issued.

[0058] The driving method of the touch display device 100 of the present application delays the power-off time of the timing controller 130 and advances the power-on time of the timing controller 130 by modifying the system power-on timing, so as to achieve normal power up and down energy response to the system HID command without adding an additional processor for controlling the touch display panel 110.

[0059] In summary, although the present application has been disclosed as above with preferred embodiments, the above preferred embodiments are not intended to limit the present application. Ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application shall be based on the scope defined in the claims.

Claims

1. A method for driving a touch display device, characterized in that: The touch display device at least includes: a touch module and a timing controller; The drive methods include: In a state where the input voltage of the timing controller is a preset high potential, in response to a first touch control instruction, the input voltage of the touch control module is changed to a preset low potential; and / or When the input voltage of the timing controller is at a preset high potential, in response to a second touch control instruction, the input voltage of the touch control module is changed to a preset high potential.

2. The driving method according to claim 1, characterized in that: Before the input voltage of the touch control module is changed to a preset low potential, the driving method further includes: In response to the sleep instruction, the touch display device enters a sleep mode.

3. The driving method according to claim 2, characterized in that: After the input voltage of the touch control module is changed to a preset low potential, the driving method further includes: After the input voltage of the touch module is changed to the preset low potential for a first preset time, in response to the first control instruction, the input voltage of the timing controller is changed to the preset low potential.

4. The driving method according to claim 3, characterized in that: The first preset time is greater than 20ms.

5. The driving method according to claim 2, characterized in that: In response to the sleep instruction, before the touch display device enters the sleep mode, the method further includes: A sleep instruction is generated according to the conduction of the sleep switch of the touch display device.

6. The driving method according to claim 1, characterized in that: Before the input voltage of the touch module is changed to a preset high potential, the driving method further includes: In response to the wake-up instruction, the touch display device exits the sleep mode.

7. The driving method according to claim 6, characterized in that: Before the input voltage of the touch control module is changed to a preset high potential, the driving method further includes: In response to the second control instruction, the input voltage of the timing controller is changed to a preset high potential, and the input voltage of the touch control module is changed to the preset high potential a second preset time after the input voltage of the timing controller is changed to the preset high potential.

8. The driving method according to claim 7, characterized in that: The second preset time is greater than 100 ms.

9. The driving method according to claim 6, characterized in that: In response to the wake-up instruction, before the touch display device exits the sleep mode, it also includes: A wake-up instruction is generated according to the disconnection of the sleep switch of the touch display device.

10. A touch display device, characterized in that: A driving method for a touch display device according to any one of claims 1 to 9, wherein the touch display device comprises at least: a display panel, a touch module and a timing controller, wherein the touch module is electrically connected to the timing controller; The timing controller is configured to control the display of the display panel; The touch control module is configured such that, when the input voltage of the timing controller is at a preset high potential, in response to a first touch control instruction, the input voltage of the touch control module is changed to a preset low potential; and / or, when the input voltage of the timing controller is at a preset high potential, in response to a second touch control instruction, the input voltage of the touch control module is changed to a preset high potential.

11. The touch display device according to claim 10, characterized in that: The touch display device further includes: a system chip electrically connected to the display panel, the touch module and the timing controller; The system chip is configured to, in response to a sleep instruction, cause the touch display device to enter a sleep mode and generate a first touch instruction to the timing driver; and / or In response to the wake-up instruction, the touch display device exits the sleep mode.

12. The touch display device according to claim 11, characterized in that: The touch display device further includes: a power management chip electrically connected to the display panel, the system chip, the touch module and the timing controller; The power management chip is configured to, after the input voltage of the touch module is changed to the preset low potential for a first preset time, respond to a first control instruction to change the input voltage of the timing controller to a preset low potential; and / or After the touch display device exits the sleep mode, in response to a second control instruction, the input voltage of the timing controller is changed to a preset high potential.

13. The touch display device according to claim 12, characterized in that: The system chip is further configured to generate a second touch control instruction to the power management chip after the power management chip changes the input voltage of the timing controller to a preset high potential for a second preset time, so as to change the input voltage of the touch control module to a preset high potential.

14. The touch display device according to claim 13, characterized in that: The touch display device further includes: a sensing unit and a sleep switch, wherein the sleep switch is electrically connected to the sensing unit, and the sensing unit is electrically connected to the system chip; The sensing unit is configured to generate a sleep instruction according to the conduction of the sleep switch of the touch display device; and / or A wake-up instruction is generated according to the disconnection of the sleep switch of the touch display device.

15. The touch display device according to claim 14, characterized in that: The sleep switch is a magnetic cover on the touch display device, and the sensing unit includes at least one magnetic sensor.

16. The touch display device according to claim 14, characterized in that: The sleep switch is a physical button arranged on the touch display device, and the sensing unit includes at least one voltage sensor.

17. The touch display device according to claim 14, characterized in that: The display panel of the touch display device at least provides a human-machine interface, the sleep switch is a virtual button in the human-machine interface, and the sensing unit includes at least a voltage sensor.

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