Controlling method of display device and display device

1. A controlling method of a display device, comprising:

obtaining a change of a scanning state of a display driving circuit; and

pausing a scanning operation of a backlight driving circuit for a backlight if the scanning state of the display driving circuit switches from a display scanning state to a touch panel scanning state;

wherein the controlling method further comprises:

obtaining a gate enable voltage, a gate turn-off voltage, and a source signal of the display driving circuit, to determine whether the display driving circuit enters the touch panel scanning state;

when the gate enable voltage, the gate turn-off voltage, and the source signal are all at a preset value, the display driving circuit enters the touch panel scanning state; or

when the gate enable voltage, the gate turn-off voltage, and the source signal are not at the preset value, the display driving circuit does not enter the touch panel scanning state.

2. The controlling method according to claim 1 , wherein after pausing a scanning operation of a backlight driving circuit, the method comprises:

resuming the scanning operation of the backlight driving circuit when the touch panel scanning state ends.

3. The controlling method according to claim 2 , wherein after resuming the scanning operation of the backlight driving circuit, the method comprises:

continuing the scanning operation from a position where the scanning operation of the backlight driving circuit is paused, when the touch panel scanning state ends.

4. The controlling method according to claim 1 , wherein

obtaining a change of a scanning state of a display driving circuit specifically comprises:

obtaining level changes of a gate signal and a source signal of the display driving circuit; and

pausing a scanning operation of a backlight driving circuit specifically comprises:

pausing the scanning operation of the backlight driving circuit if levels of the gate signal and the source signal of the display driving circuit change to preset values.

5. The controlling method according to claim 4 , wherein before obtaining level changes of a gate signal and a source signal of the display driving circuit, the method comprises:

the display driving circuit and the backlight driving circuit scanning synchronously, the display driving circuit and the backlight driving circuit first performing the display scanning, then performing the touch panel scanning, and the display scanning and the touch panel scanning alternately switching.

6. The controlling method according to claim 4 , wherein before obtaining level changes of a gate signal and a source signal of the display driving circuit, the method comprises:

the backlight driving circuit beginning the scanning within a preset time before the display driving circuit beginning scanning.

7. The controlling method according to claim 1 , wherein the display scanning state has a refresh rate not less than 60 Hz, a sum of time of a display scanning state and an adjacent touch panel scanning state is one frame, and the backlight is a scanning direct illumination-type backlight.

8. A controlling method of a display device, comprising:

detecting whether the display device is at the beginning of a touch panel scanning or during the touch panel scanning; and

stopping at least one signal/current scanning operation which is different from the display scanning within the display device if at the beginning of the touch panel scanning or during the touch panel scanning;

wherein the controlling method further comprises:

obtaining a gate enable voltage, a gate turn-off voltage, and a source signal of a display driving circuit of the display device, to determine whether the display device is at the beginning of the touch panel scanning or during the touch panel scanning;

when the gate enable voltage, the gate turn-off voltage, and the source signal are all at a preset value, the display device is at the beginning of the touch panel scanning or during the touch panel scanning; or

when the gate enable voltage, the gate turn-off voltage, and the source signal are not at the preset value, the display device is not at the beginning of the touch panel scanning or during the touch panel scanning.

9. The controlling method according to claim 8 , wherein

detecting whether the display device is at the beginning of the touch panel scanning or during the touch panel scanning comprises:

obtaining a change of a scanning state of the display driving circuit; and

stopping at least one signal/current scanning operation which is different from the display scanning within the display device if at the beginning of the touch panel scanning or during the touch panel scanning comprises:

pausing a scanning operation of a backlight driving circuit for a backlight if a scanning state of the display driving circuit switches from a display scanning state to a touch panel scanning state.

10. The controlling method according to claim 9 , wherein after pausing a scanning operation of a backlight driving circuit, the method comprises:

resuming the scanning operation of the backlight driving circuit when the touch panel scanning state ends.

11. The controlling method according to claim 10 , wherein after resuming the scanning operation of the backlight driving circuit when the touch panel scanning state ends, the method comprises:

continuing the scanning operation from a position where the scanning operation of the backlight driving circuit is paused when the touch panel scanning state ends.

12. The controlling method according to claim 9 , wherein

obtaining a change of a scanning state of a display driving circuit specifically comprises:

obtaining level changes of a gate signal and a source signal of the display driving circuit; and

pausing a scanning operation of the backlight driving circuit specifically comprises:

pausing the scanning operation of the backlight driving circuit if levels of the gate signal and the source signal of the display driving circuit change to preset values.

13. The controlling method according to claim 12 , wherein before obtaining the level changes of the gate signal and the source signal of the display driving circuit, the method comprises:

the display driving circuit and the backlight driving circuit scanning synchronously, the display driving circuit and the backlight driving circuit first performing the display scanning, then performing the touch panel scanning, and the display scanning and the touch panel scanning alternately switching.

14. The controlling method according to claim 12 , wherein before obtaining the level changes of the gate signal and the source signal of the display driving circuit, the method comprises:

the backlight driving circuit beginning the scanning within a preset time before the display driving circuit beginning scanning.

15. The controlling method according to claim 9 , wherein a refresh rate of the display scanning state is not less than 60 Hz, a sum of time of a display scanning state and an adjacent touch panel scanning state is one frame, and the backlight is a scanning direct illumination-type backlight.

16. A display device, comprising a storage and a processor coupled to each other, with a computer program executable on the processor and stored in the storage, the processor executing the computer program to realize:

detecting whether the display device is at the beginning of a touch panel scanning or during the touch panel scanning; and

stopping at least one signal/current scanning operation which is different from the display scanning within the display device if at the beginning of the touch panel scanning or during the touch panel scanning;

wherein the controlling method further comprises:

obtaining a gate enable voltage, a gate turn-off voltage, and a source signal of a display driving circuit of the display device, to determine whether the display device is at the beginning of the touch panel scanning or during the touch panel scanning;

when the gate enable voltage, the gate turn-off voltage, and the source signal are all at a preset value, the display device is at the beginning of the touch panel scanning or during the touch panel scanning; or

when the gate enable voltage, the gate turn-off voltage, and the source signal are not at the preset value, the display device is not at the beginning of the touch panel scanning or during the touch panel scanning.

17. The display device according to claim 16 , wherein

detecting whether the display device is at the beginning of the touch panel scanning or during the touch panel scanning comprises:

obtaining a change of a scanning state of the display driving circuit; and

stopping at least one signal/current scanning operation which is different from the display scanning within the display device if at the beginning of the touch panel scanning or during the touch panel scanning comprises:

pausing a scanning operation of a backlight driving circuit for a backlight if a scanning state of the display driving circuit switches from a display scanning state to a touch panel scanning state.

18. The display device according to claim 17 , wherein after pausing a scanning operation of a backlight driving circuit if a scanning state of the display driving circuit switches from a display scanning state to a touch panel scanning state, comprises:

resuming the scanning operation of the backlight driving circuit when the touch panel scanning state ends.

19. The display device according to claim 18 , wherein after resuming the scanning operation of the backlight driving circuit when the touch panel scanning state ends, comprises:

continuing the scanning operation from a position where the scanning operation of the backlight driving circuit is paused, when the touch panel scanning state ends.

20. The display device according to claim 17 , wherein a refresh rate of the display scanning state is not less than 60 Hz, and a sum of time of a display scanning state and an adjacent touch panel scanning state is one frame, and the backlight is a scanning direct illumination-type backlight.