US 11,756,486 B2
Display panel, display device and driving method
Weiyun Huang, Beijing (CN); Libin Liu, Beijing (CN); Chao Zeng, Beijing (CN); Yao Huang, Beijing (CN); Meng Li, Beijing (CN); and Yue Long, Beijing (CN)
Assigned to CHENGDU BOE OPTEOELECTRONICS TECHNOLOGY CO., LTD., Chengdu (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 16/766,094
Filed by CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Chengdu (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Jul. 1, 2019, PCT No. PCT/CN2019/094270
§ 371(c)(1), (2) Date May 21, 2020,
PCT Pub. No. WO2021/000234, PCT Pub. Date Jan. 7, 2021.
Prior Publication US 2021/0407425 A1, Dec. 30, 2021
Int. Cl. G09G 3/3266 (2016.01); G09G 3/00 (2006.01); G09G 3/3233 (2016.01)
CPC G09G 3/3266 (2013.01) [G09G 3/035 (2020.08); G09G 3/3233 (2013.01); G09G 2300/0804 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/0221 (2013.01); G09G 2310/0286 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01); G09G 2330/023 (2013.01)] 17 Claims
OG exemplary drawing
 
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,
each first pixel unit comprises a first pixel circuit, the first pixel circuit comprises a first light-emission control sub-circuit, a first driving sub-circuit, and a first light-emitting element, the first light-emission control sub-circuit is configured to receive a first light-emission control pulse signal, and apply a first voltage to the first driving sub-circuit in response to the first light-emission control pulse signal and cause a driving current of the first driving sub-circuit to be applied to the first light-emitting element;
each second pixel unit comprises a second pixel circuit, the second pixel circuit comprises a second light-emission control sub-circuit, a second driving sub-circuit, and a second light-emitting element, the second light-emission control sub-circuit is configured to receive a second light-emission control pulse signal, and apply the first voltage to the second driving sub-circuit in response to the second light-emission control pulse signal and cause a driving current of the second driving sub-circuit to be applied to the second light-emitting element; 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,
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;
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 the 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 the 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;
wherein the display panel further comprises a first start signal line and a second start signal line, the first start signal line is electrically connected to the first light-emission control scan driving circuit to provide the first start signal, the second start signal line is electrically connected to the second light-emission control scan driving circuit to provide the second start signal, the first start signal line is provided between the first light-emission control scan driving circuit and the first display region, the second start signal line is provided between the second light-emission control scan driving circuit and the second display region, and an extending direction of the first start signal line and an extending direction of the second start signal line are the same.