US 12,327,523 B2
Pixel circuit and method for driving same, display panel, and display device
Tuo Sun, Beijing (CN); Xuliang Zhao, Beijing (CN); and Libin Liu, Beijing (CN)
Assigned to Beijing BOE Technology Development Co., Ltd., Beijing (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 18/577,653
Filed by Beijing BOE Technology Development Co., Ltd., Beijing (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Apr. 18, 2023, PCT No. PCT/CN2023/088842
§ 371(c)(1), (2) Date Jan. 8, 2024,
PCT Pub. No. WO2024/216483, PCT Pub. Date Oct. 24, 2024.
Prior Publication US 2025/0124862 A1, Apr. 17, 2025
Int. Cl. G09G 3/3233 (2016.01)
CPC G09G 3/3233 (2013.01) [G09G 2300/0819 (2013.01); G09G 2300/0852 (2013.01); G09G 2300/0861 (2013.01); G09G 2310/08 (2013.01); G09G 2340/0435 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pixel circuit, comprising:
a data writing circuit, coupled to a gate signal terminal, a data terminal and a first node, and configured to control connection or disconnection between the data terminal and the first node based on a gate driving signal provided by the gate signal terminal;
a reset circuit, coupled to a reset signal terminal, a scanning signal terminal, a first reference power supply terminal, a first initial power supply terminal, a second initial power supply terminal, the first node, a second node and a light-emitting element, and configured to control connection or disconnection between the first initial power supply terminal and the second node based on a reset signal provided by the reset signal terminal, and control connection or disconnection between the first reference power supply terminal and the first node and connection or disconnection between the second initial power supply terminal and the light-emitting element based on a scanning signal provided by the scanning signal terminal;
a potential adjustment circuit, coupled to a first compensation terminal, a second compensation terminal, a driving power supply terminal, the first node, the second node, a third node and a fourth node, and configured to control connection or disconnection between the driving power supply terminal and the third node based on a first compensation signal provided by the first compensation terminal, control connection or disconnection between the second node and the fourth node based on a second compensation signal provided by the second compensation terminal, and adjust a potential of the first node, a potential of the second node and a potential of the third node through a coupling effect;
a light emission control circuit, coupled to a light emission control terminal, a second reference power supply terminal, the first node, the fourth node and the light-emitting element, and configured to control connection or disconnection between the second reference power supply terminal and the first node and connection or disconnection between the fourth node and the light-emitting element based on a light emission control signal provided by the light emission control terminal, wherein a potential of a second reference power supply signal provided by the second reference power supply terminal is lower than a potential of a first reference power supply signal provided by the first reference power supply terminal; and
a drive circuit, coupled to the second node, the driving power supply terminal and the fourth node, and configured to transmit a driving signal to the fourth node based on the potential of the second node and the driving power supply signal.