US 12,142,212 B2
Pixel circuit, drive method and display device
Chengchung Yang, Beijing (CN); Yucheng Chan, Beijing (CN); and Yangzhong Jing, Beijing (CN)
Assigned to Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 18/026,637
Filed by CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Apr. 27, 2022, PCT No. PCT/CN2022/089515
§ 371(c)(1), (2) Date Mar. 16, 2023,
PCT Pub. No. WO2023/206130, PCT Pub. Date Nov. 2, 2023.
Prior Publication US 2024/0290258 A1, Aug. 29, 2024
Int. Cl. G09G 3/00 (2006.01); G09G 3/3233 (2016.01)
CPC G09G 3/3233 (2013.01) [G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0861 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01); G09G 2340/0435 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A pixel circuit, comprising: a light-emitting element, a drive circuit, an energy storage circuit, a switch control circuit, a first initialization circuit, and a compensation control circuit; wherein a display cycle of the pixel circuit comprises a refresh frame and a hold frame, and the hold frame comprises a first reset phase, a second reset phase and a first light-emitting phase that are sequentially set; a first end of the energy storage circuit is electrically connected to a control terminal of the drive circuit, and the energy storage circuit is configured to store electric energy;
the switch control circuit is electrically connected to a switch control terminal, a first voltage terminal and a second end of the energy storage circuit, and is configured to control the first voltage terminal to be connected to the second end of the energy storage circuit in the refresh frame and the first light-emitting phase, and to control the first voltage terminal to be disconnected from the second end of the energy storage circuit in the first reset phase and the second reset phase under control of a switch control signal provided by the switch control terminal;
the first initialization circuit is electrically connected to an initialization control terminal, a first initial voltage terminal and the control terminal of the drive circuit, and is configured to write a first initial voltage provided by the first initial voltage terminal into the control terminal of the drive circuit in the first reset phase and the second reset phase, under control of an initialization control signal provided by the initialization control terminal;
the compensation control circuit is electrically connected to a compensation control terminal, the control terminal of the drive circuit and a second terminal of the drive circuit, and is configured to control the control terminal of the drive circuit to be connected to the second terminal of the drive circuit under control of a compensation control signal provided by the compensation control terminal in the second reset phase; and
the drive circuit is configured to generate a drive current for driving the light-emitting element under control of a potential of the control terminal of the drive circuit.