US 12,236,859 B2
Pixel circuit and driving method thereof, and display device
Xin Xu, Beijing (CN); Tsanghong Wang, Beijing (CN); Hsinwei Huang, Beijing (CN); and Chunyang Li, Beijing (CN)
Assigned to Chengdu BOE Optoelectronics Technology Co., Ltd., Chengdu (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 18/021,549
Filed by Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Apr. 18, 2022, PCT No. PCT/CN2022/087407
§ 371(c)(1), (2) Date Feb. 15, 2023,
PCT Pub. No. WO2023/201468, PCT Pub. Date Oct. 26, 2023.
Prior Publication US 2024/0265862 A1, Aug. 8, 2024
Int. Cl. G09G 3/3225 (2016.01)
CPC G09G 3/3225 (2013.01) [G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0861 (2013.01); G09G 2320/0233 (2013.01); G09G 2330/021 (2013.01); G09G 2340/0435 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pixel circuit, comprising:
a data writing circuit, coupled to a first gate signal terminal, a second gate signal terminal, a third gate signal terminal, a data signal terminal, a first node, a second node and a third node, wherein the data writing circuit is configured to control conduction/non-conduction between the data signal terminal and the first node and conduction/non-conduction between the second node and the third node in response to a first gate driving signal provided by the first gate signal terminal, a second gate driving signal provided by the second gate signal terminal, and a third gate driving signal provided by the third gate signal terminal; wherein a first parasitic capacitance is formed between the second gate signal terminal and the second node, and a second parasitic capacitance is formed between the third gate signal terminal and the second node;
a light emission control circuit, coupled to a light emission control terminal, a first power supply terminal, the first node, the third node and a light-emitting element, wherein the light emission control circuit is configured to control conduction/non-conduction between the first power supply terminal and the first node and conduction/non-conduction between the third node and the light-emitting element in response to a light emission control signal provided by the light emission control terminal; and
a drive circuit, wherein an input terminal, a control terminal and an output terminal of the drive circuit are coupled to the first node, the second node and the third node respectively, and the drive circuit is configured to transmit a light emission driving signal to the third node based on a potential at the first node and a potential at the second node.