US 12,283,229 B2
Pixel circuit, driving method thereof, display panel, and display device
Mengmeng Zhang, Wuhan (CN)
Assigned to Wuhan Tianma Microelectronics Co., Ltd., Wuhan (CN); and Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch, Shanghai (CN)
Filed by Wuhan Tianma Microelectronics Co., Ltd., Wuhan (CN); and Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch, Shanghai (CN)
Filed on Sep. 19, 2023, as Appl. No. 18/369,915.
Claims priority of application No. 202310161668.3 (CN), filed on Feb. 23, 2023.
Prior Publication US 2024/0005852 A1, Jan. 4, 2024
Int. Cl. G09G 3/32 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 2310/0245 (2013.01); G09G 2310/0267 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0247 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A driving method of a pixel circuit, wherein the pixel circuit comprises a drive module, a voltage write module, and a compensation module, wherein the drive module is configured to drive a light-emitting element in a display cycle, the display cycle comprises a write frame and a retention frame, the voltage write module is connected to a first terminal of the drive module, a working stage of the voltage write module comprises at least one first stage and at least one second stage, the first stage is located in the write frame, and the second stage is located in the retention frame, and the compensation module is connected between a second terminal and a control terminal of the drive module;
wherein the driving method of a pixel circuit comprises:
in the first stage, controlling the voltage write module to be turned on so that the voltage write module transmits a reset voltage to the first terminal or the control terminal of the drive module, the reset voltage is transmitted to the control terminal of the drive module by turning on the drive module od the compensation module; and
in the second stage, controlling the voltage write module to be turned on so that the voltage write module transmits the reset voltage to the first terminal of the drive module;
wherein a plurality of display cycles comprises a plurality of first stages and a plurality of second stages, among the plurality of first stages and the plurality of second stages, an interval duration between at least one second stage and an adjacent first stage or an interval duration between at least one second stage and an adjacent second stage is a first duration, and an interval duration between any second stage and an adjacent first stage or an interval duration between any second stage and an adjacent second stage is a second duration, wherein in at least part of the plurality of display cycles, the first duration is different from a total duration of the write frame, and an absolute value of a difference between the second duration and the total duration of the write frame is less than or equal to a preset duration, wherein the drive module comprises a drive transistor, the voltage write module comprises a first transistor, the compensation module comprises a second transistor, the light emission control module comprises a third transistor and a fourth transistor.