Display panel and display device

Patent metadata

Field	Value
Publication number	US-2021407425-A1
Application number	US-201916766094-A
Country	US
Kind code	A1
Filing date	Jul 1, 2019
Priority date	Jul 1, 2019
Publication date	Dec 30, 2021
Grant date	—

Abstract

A display panel, a display device and a driving method are disclosed, the display panel includes a plurality of display regions, the plurality of display regions include a first display region and a second display region, the first display region includes rows of first pixel units, the second display region includes rows of second pixel units; the display panel further includes a first light-emission control scan driving circuit for controlling the rows of first pixel units to emit light, and a second light-emission control scan driving circuit for controlling the rows of second pixel units to emit light, and the driving method includes: providing a first start signal to the first light-emission control scan driving circuit, and providing a second start signal to the second light-emission control scan driving circuit; the second start signal and the first start signal are applied independently, respectively.

First claim

1 . A driving method for a display panel, wherein the display panel comprises a plurality of display regions, the plurality of display regions comprise a first display region and a second display region which are side by side but not overlapped with each other, the first display region comprises rows of first pixel units arranged in array, the second display region comprises rows of second pixel units arranged in array,
the display panel further comprises a first light-emission control scan driving circuit for controlling the rows of first pixel units to emit light, and a second light-emission control scan driving circuit for controlling the rows of second pixel units to emit light, and the driving method comprises:
providing a first start signal to the first light-emission control scan driving circuit, and
providing a second start signal to the second light-emission control scan driving circuit, wherein
the second start signal and the first start signal are applied independently, respectively.

2 . The driving method according to claim 1 , further comprising:
in a case where the first display region is required for display but the second display region is not required for display, causing the first start signal to be a first pulse signal to enable that the first light-emission control scan driving circuit sequentially outputs first light-emission control pulse signals, and causing a level of the second start signal to be a second invalid level to enable that the second light-emission control scan driving circuit outputs a second fixed-level signal; and in a case where the second display region is required for display but the first display region is not required for display, causing the second start signal to be a second pulse signal to enable that the second light-emission control scan driving circuit sequentially outputs second light-emission control pulse signals, and causing a level of the first start signal to be a first invalid level to enable that the first light-emission control scan driving circuit outputs a first fixed-level signal.

3 . The driving method according to claim 2 , further comprising:
in the case where the first display region is required for display but the second display region is not required for display, providing first data signals to the first display region without providing the first data signals to the second display region; and in the case where the second display region is required for display but the first display region is not required for display, providing second data signals to the second display region without providing the second data signals to the first display region.

4 . The driving method according to claim 2 , further comprising:
in the case where the first display region is required for display but the second display region is not required for display, providing data signals to both the first display region and the second display region; and in the case where the second display region is required for display but the first display region is not required for display, providing data signals to both the first display region and the second display region.

5 . The driving method according to claim 2 , wherein a level of the first fixed-level signal is equal to a level of the second fixed-level signal.

6 . The driving method according to claim 1 , wherein the first light-emission control scan driving circuit comprises a plurality of cascaded first light-emission control shift register units, and the driving method further comprises:
in a case where the first display region and the second display region are required for display, causing the first start signal to be a first pulse signal to enable that the first light-emission control scan driving circuit sequentially outputs first light-emission control pulse signals, providing the second start signal to the second light-emission control scan driving circuit when a last-stage first light-emission control shift register unit of the plurality of cascaded first light-emission control shift register units operates, and causing the second start signal to be a second pulse signal to enable that the second light-emission control scan driving circuit sequentially outputs second light-emission control pulse signals.

7 . The driving method according to claim 6 , wherein a pulse width of the first pulse signal is different from a pulse width of the second pulse signal.

8 . The driving method according to claim 1 , wherein the first pixel unit and the second pixel unit are equal in size.

9 . The driving method according to claim 1 , wherein
the plurality of display regions further comprise a third display region, the third display region and the first display region are side by side and not overlapped with each other, the third display region and the second display region are side by side and not overlapped with each other, the third display region comprises rows of third pixel units arranged in array, the display panel further comprises a third light-emission control scan driving circuit for controlling the rows of third pixel units to emit light, and the driving method further comprises: providing a third start signal to the third light-emission control scan driving circuit, wherein
the third start signal and the first start signal are applied independently, respectively, and the third start signal and the second start signal are applied independently, respectively.

10 . The driving method according to claim 9 , further comprising:
in a case where the first display region is required for display but the second display region and the third display region are not required for display, causing the first start signal to be a first pulse signal to enable that the first light-emission control scan driving circuit sequentially outputs first light-emission control pulse signals, causing a level of the second start signal to be an invalid level to enable that the second light-emission control scan driving circuit outputs a second fixed-level signal, and causing a level of the third start signal to be an invalid level to enable that the third light-emission control scan driving circuit outputs a third fixed-level signal.

11 . The driving method according to claim 10 , further comprising:
in the case where the first display region is required for display but the second display region and the third display region are not required for display, providing data signals to the first display region without providing the data signals to the second display region and the third display region.

12 . The driving method according to claim 10 , wherein a level of the second fixed-level signal is equal to a level of the third fixed-level signal.

13 . The driving method according to claim 9 , wherein the first light-emission control scan driving circuit comprises a plurality of cascaded first light-emission control shift register units, and the driving method further comprises:
in a case where the first display region and the second display region are required for display but the third display region is not required for display, causing the first start signal to be a first pulse signal to enable that the first light-emission control scan driving circuit sequentially outputs first light-emission control pulse signals, providing the second start signal to the second light-emission control scan driving circuit when a last-stage first light-emission control shift register unit of the plurality of cascaded first light-emission control shift register units operates, causing the second start signal to be a second pulse signal to enable that the second light-emission control

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd

Inventors

• Huang Weiyun
• Liu Libin
• Zheng Chao
• Huang Yao
• Li Meng
• Long Yue

Classifications

• G09G2300/0842

  forming a memory circuit, e.g. a dynamic memory with one capacitor · CPC title

• G09G2310/08

  Details of timing specific for flat panels, other than clock recovery · CPC title

• G09G3/2022

  using sub-frames · CPC title

• G09G3/3233 Primary

  with pixel circuitry controlling the current through the light-emitting element · CPC title

• G09G2330/023

  using energy recovery or conservation · CPC title