US 12,223,887 B2
Gate drive circuit and display panel
Feixiang Sun, Hubei (CN); Hongyan Liu, Hubei (CN); and Yi Liu, Hubei (CN)
Assigned to WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
Filed by WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Hubei (CN)
Filed on Nov. 5, 2023, as Appl. No. 18/502,076.
Claims priority of application No. 202310772777.9 (CN), filed on Jun. 27, 2023.
Prior Publication US 2025/0006106 A1, Jan. 2, 2025
Int. Cl. G09G 3/32 (2016.01); G11C 19/28 (2006.01)
CPC G09G 3/32 (2013.01) [G11C 19/287 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0852 (2013.01); G09G 2310/0267 (2013.01); G09G 2310/0286 (2013.01); G09G 2310/08 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A gate drive circuit, wherein the gate drive circuit comprises one or more shift register groups, each of the shift register groups comprises N adjacent shift registers that output in sequence, N being an integer greater than or equal to 3, each of the shift registers comprises:
a first output stage configured to output a gate drive signal;
a frequency division control module configured to control outputting of the gate drive signal based on a refresh frequency,
wherein a control end of each frequency division control module in each of the shift register groups receives a control signal with a different phase and a same frequency, respectively, to adjust a pulse width of the gate drive signal and maintain a same pulse width at different refresh frequencies.