US 12,236,870 B2
Pixel circuit and drive method thereof, display panel, and display apparatus
Ziyang Yu, Beijing (CN); Zhiliang Jiang, Beijing (CN); and Ming Hu, Beijing (CN)
Assigned to Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 18/028,522
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/CN2022/087418
§ 371(c)(1), (2) Date Mar. 25, 2023,
PCT Pub. No. WO2023/201470, PCT Pub. Date Oct. 26, 2023.
Prior Publication US 2024/0304142 A1, Sep. 12, 2024
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 2320/0233 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A pixel circuit, comprising a drive sub-circuit, a writing sub-circuit, a reset sub-circuit, a coupling sub-circuit, a storage sub-circuit, and a light emitting element, wherein
the drive sub-circuit is configured to provide a drive current to the light emitting element under control of signals of a first node and a second node;
the writing sub-circuit is configured to write a signal of a data signal terminal to the second node under control of a signal of a scan signal terminal;
the storage sub-circuit is configured to store a voltage of the first node;
the coupling sub-circuit is configured to raise the voltage of the first node through a coupling action; and
the reset sub-circuit is configured to reset an anode terminal of the light emitting element under control of a signal of the scan signal terminal and reset a control terminal of the drive sub-circuit under control of a signal of a reset control signal terminal,
wherein the pixel circuit further comprises a compensation sub-circuit, a first light emitting control sub-circuit, and a second light emitting control sub-circuit, wherein
the compensation sub-circuit is configured to compensate a threshold voltage of the drive sub-circuit under control of a signal of the scan signal terminal;
the first light emitting control sub-circuit is configured to form a path between a first voltage terminal and the second node under control of a signal of a light emitting control signal terminal;
the second light emitting control sub-circuit is configured to form a path between a third node and a fourth node under control of a signal of the light emitting control signal terminal; and
one end of the light emitting element is connected with the fourth node, and the other end of the light emitting element is connected with a second voltage terminal.