US 12,148,356 B2
Pixel circuit, display panel and control method
Liang Sun, Wuhan (CN); and Mian Zeng, Wuhan (CN)
Appl. No. 17/419,747
Filed by WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Wuhan (CN)
PCT Filed May 10, 2021, PCT No. PCT/CN2021/092685
§ 371(c)(1), (2) Date Jun. 30, 2021,
PCT Pub. No. WO2022/217681, PCT Pub. Date Oct. 20, 2022.
Claims priority of application No. 202110411773.9 (CN), filed on Apr. 16, 2021.
Prior Publication US 2024/0127737 A1, Apr. 18, 2024
Int. Cl. G09G 3/32 (2016.01); G09G 3/3208 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 3/3208 (2013.01); G09G 2300/0842 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0247 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A pixel circuit, comprising:
a light-emitting device;
a driving module electrically connected to the light-emitting device for driving the light-emitting device to emit light; and
a light-emitting control module connected to the driving module, wherein the light-emitting control module, the light-emitting device and the driving module are connected in series between a first voltage terminal and a second voltage terminal, a control terminal of the light-emitting control module is configured for receiving a light-emitting control signal, and the light-emitting control signal comprises black frame insertion pulses;
wherein a light-emitting stage of a frame of the pixel circuit at least comprises an early light-emitting stage of said frame and a late light-emitting stage of said frame, a duty ratio of the black frame insertion pulses to the early light-emitting stage of said frame is a first ratio value, a duty ratio of the black frame insertion pulses to the late light-emitting stage of said frame is a second ratio value, and the first ratio value is greater than the second ratio value; and
wherein the light-emitting control signal further comprises light-emitting pulses; in the early light-emitting stage of said frame, the black frame insertion pulses and the light-emitting pulses are alternate, wherein the black frame insertion pulses are configured for cutting off an illumination loop of the pixel circuit, and the light-emitting pulses are configured for conducting the illumination loop.