US 11,783,760 B2
Pixel circuit and display panel
Lei Wu, Hubei (CN); Mian Zeng, Hubei (CN); and Liang Sun, Hubei (CN)
Assigned to Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Hubei (CN)
Appl. No. 17/614,511
Filed by WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Hubei (CN)
PCT Filed Sep. 22, 2021, PCT No. PCT/CN2021/119594
§ 371(c)(1), (2) Date Nov. 26, 2021,
PCT Pub. No. WO2023/035321, PCT Pub. Date Mar. 16, 2023.
Claims priority of application No. 202111056271.5 (CN), filed on Sep. 9, 2021.
Prior Publication US 2023/0071459 A1, Mar. 9, 2023
Int. Cl. G09G 3/32 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 2300/0426 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/027 (2013.01); G09G 2310/0267 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pixel circuit, comprising:
a light-emitting module;
a driving module electrically connected to the light-emitting module; and
an analog comparator, an output end of the analog comparator is electrically connected to a control end of the driving module, the analog comparator controls a conduction time of the driving module according to a triangle-wave analog signal, a time control analog signal, and a brightness control analog signal, and controls a conduction degree of the driving module according to the brightness control analog signal,
wherein the analog comparator comprises:
a first transistor, an output electrode of the first transistor is electrically connected to the control end of the driving module, an input electrode of the first transistor is connected to the brightness control analog signal;
a second transistor, an output electrode of the second transistor is electrically connected to a gate electrode of the first transistor, an input electrode of the second transistor is connected to the time control analog signal, and a gate electrode of the second transistor is connected to a control signal; and
a first capacitor, one end of the first capacitor is connected to a triangle-wave analog signal, and another end of the first capacitor is electrically connected to the output electrode of the second transistor.