US 12,223,909 B2
Pixel drive circuit, display panel and display device
Tingliang Liu, Beijing (CN); Huijuan Yang, Beijing (CN); Linhong Han, Beijing (CN); Xiaoqing Shu, Beijing (CN); Maoying Liao, Beijing (CN); and Xiangdan Dong, Beijing (CN)
Assigned to CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 18/282,242
Filed by Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Nov. 23, 2021, PCT No. PCT/CN2021/132462
§ 371(c)(1), (2) Date Sep. 15, 2023,
PCT Pub. No. WO2022/199084, PCT Pub. Date Sep. 29, 2022.
Claims priority of application No. 202110322033.8 (CN), filed on Mar. 25, 2021.
Prior Publication US 2024/0161699 A1, May 16, 2024
Int. Cl. G09G 3/3258 (2016.01)
CPC G09G 3/3258 (2013.01) [G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0861 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0242 (2013.01); G09G 2320/0626 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A pixel driving circuit, comprising:
a driving transistor connected to a first node, a second node and a third node, and configured to output a driving current to the third node under control of the first node;
a storage capacitor, comprising one terminal connected to the first node;
a data writing circuit, connected to the second node, and configured to load a data voltage to the second node in response to a scan signal;
a threshold compensation circuit, connected to the first node and the third node, and configured to conduct the first node and the third node in response to the scan signal;
a first light emitting control circuit, connected to the second node, and configured to apply a first power supply voltage to the second node in response to a light emitting control signal;
a second light emitting control circuit, connected to the third node and a fourth node, and configured to conduct the third node and the fourth node in response to the light emitting control signal;
a first reset circuit, connected to the fourth node, and configured to apply a second power supply voltage to the fourth node in response to the scan signal; and
a light emitting element, one terminal of the light emitting element is connected to the fourth node, and the other terminal is configured to load the second power supply voltage,
wherein the pixel driving circuit comprises a first power supply lead configured to load the first power supply voltage and a second power supply lead configured to load the second power supply voltage,
wherein the first power supply lead comprises a first part extending in a first direction and a second part extending in a second direction, and the first part and the second part are formed in different conductive lavers and are interconnected to form a grid shaped electrode; and wherein the second power supply lead comprises a first part extending in the first direction and a second part extending in the second direction, and the first part and the second part are formed in different conductive layers and are interconnected to form a grid shaped electrode.