Display control circuit, display control method thereof, and display apparatus

Patent metadata

Field	Value
Publication number	US-10657923-B2
Application number	US-201715568310-A
Country	US
Kind code	B2
Filing date	Mar 13, 2017
Priority date	Sep 27, 2016
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

The embodiments of the present disclosure propose a display control circuit, a display control method thereof and a display apparatus, so that power supply to the display driving circuit is controlled to be disabled when the display driving circuit is in the sleep-in mode and is controlled to be enabled when the display driving circuit is in the wakeup mode by setting a switch circuit in the display control circuit and turning on and turning off the switch circuit.

First claim

We claim:

1. A display control circuit, comprising:
a switch circuit having a first signal input terminal connected to a control terminal, a second signal input terminal connected to a power supply signal terminal, and a power supply signal output terminal; and
a display driving circuit having a first signal input terminal connected to the control terminal, a power supply signal input terminal connected to the power supply signal output terminal of the switch circuit, and a driving signal output terminal,
wherein the switch circuit is configured to receive an operating power supply voltage from the power supply signal terminal via the second signal input terminal and output the operating power supply voltage to the display driving circuit via the power supply signal output terminal under the control of the control terminal.

2. The display control circuit according to claim 1 , further comprising a main circuit including:
the control terminal, configured to provide a control signal to the switch circuit and the display driving circuit; and
the power supply signal terminal, configured to provide the operating power supply voltage.

3. The display control circuit according to claim 2 , wherein the main circuit is configured to:
control the switch circuit to be turned off via the control terminal in a sleep-in mode; and
control the switch circuit to be turned on via the control terminal in a wakeup mode.

4. The display control circuit according to claim 3 , wherein the switch circuit is configured to:
output the operating power supply voltage to the display driving circuit when the switch is turned on, and
stop outputting the operating power supply voltage to the display driving circuit when the switch circuit is turned off.

5. A display apparatus comprising a display panel and the display control circuit according to claim 3 , wherein the display driving circuit is configured to provide a driving signal to the display panel via the driving signal output terminal of the display driving circuit.

6. A display apparatus comprising a display panel and the display control circuit according to claim 4 , wherein the display driving circuit is configured to provide a driving signal to the display panel via the driving signal output terminal of the display driving circuit.

7. The display control circuit according to claim 2 , wherein the main circuit is further configured to control the display driving circuit to be reset via the control terminal.

8. The display control circuit according to claim 2 , further comprising a touch circuit including:
a voltage signal input terminal connected to the power supply signal terminal and configured to receive the operating power supply voltage from the main circuit.

9. A display control method applicable to the display control circuit according to claim 8 , comprising:
controlling the switch circuit to be turned off in a sleep-in mode; and
controlling the switch circuit to be turned on in a wakeup mode, so as to provide an operating power supply voltage to the display driving circuit.

10. The display control method according to claim 9 , wherein
controlling the switch circuit to be turned off comprises switching a control signal provided via the control terminal from a first level to a second level;
controlling the switch circuit to be turned on comprises: switching the control signal from the second level to the first level.

11. The display control method according to claim 10 , wherein when the control signal is switched from the second level to the first level, the display driving circuit is reset.

12. A display control method applicable to the display control circuit according to claim 2 , comprising:
controlling the switch circuit to be turned off in a sleep-in mode; and
controlling the switch circuit to be turned on in a wakeup mode, so as to provide an operating power supply voltage to the display driving circuit.

13. The display control method according to claim 12 , wherein
controlling the switch circuit to be turned off comprises switching a control signal provided via the control terminal from a first level to a second level;
controlling the switch circuit to be turned on comprises: switching the control signal from the second level to the first level.

14. The display control method according to claim 13 , wherein when the control signal is switched from the second level to the first level, the display driving circuit is reset.

15. A display apparatus comprising a display panel and the display control circuit according to claim 2 , wherein the display driving circuit is configured to provide a driving signal to the display panel via the driving signal output terminal of the display driving circuit.

16. The display control circuit according to claim 1 , wherein the switch circuit comprises an NMOS transistor or a PMOS transistor.

17. A display control method applicable to the display control circuit according to claim 1 , comprising:
controlling the switch circuit to be turned off in a sleep-in mode; and
controlling the switch circuit to be turned on in a wakeup mode, so as to provide an operating power supply voltage to the display driving circuit.

18. The display control method according to claim 17 , wherein
controlling the switch circuit to be turned off comprises: switching a control signal provided via the control terminal from a first level to a second level;
controlling the switch circuit to be turned on comprises: switching the control signal from the second level to the first level.

19. The display control method according to claim 18 , wherein when the control signal is switched from the second level to the first level, the display driving circuit is reset.

20. A display apparatus comprising a display panel and the display control circuit according to claim 1 , wherein the display driving circuit is configured to provide a driving signal to the display panel via the driving signal output terminal of the display driving circuit.

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Optoelectronics Tech Co Ltd

Inventors

• Liu Nan
• An Na
• Wang Xin
• Zhang Xiaoping
• Liu Ying
• Wang Yaodong
• Liu Fangyi
• Zhang Yang
• Zheng Yangli

Classifications

• G06F3/041 Primary

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• G06F1/3265

  Power saving in display device · CPC title

• G06F1/26

  Power supply means, e.g. regulation thereof (for memories G11C) · CPC title

• G09G2310/061

  for resetting or blanking · CPC title

• G09G2330/026

  Arrangements or methods related to booting a display · CPC title