US 12,424,135 B2
Gate drive circuit and display device
Mingyue Li, Hubei (CN); Chao Tian, Hubei (CN); Yanqing Guan, Hubei (CN); Fei AI, Hubei (CN); and Guanghui Liu, Hubei (CN)
Assigned to WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Wuhan (CN)
Filed by WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Hubei (CN)
Filed on Jun. 12, 2024, as Appl. No. 18/740,677.
Application 18/740,677 is a continuation of application No. 17/434,790, granted, now 12,046,172, previously published as PCT/CN2021/106576, filed on Jul. 15, 2021.
Claims priority of application No. 202110717738.X (CN), filed on Jun. 28, 2021.
Prior Publication US 2024/0331603 A1, Oct. 3, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G09G 3/20 (2006.01)
CPC G09G 3/20 (2013.01) [G09G 2310/0267 (2013.01); G09G 2310/0283 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A gate drive circuit, comprising a plurality of cascaded gate drive units, one of the gate drive units comprising:
a first layout, configured to transmit a potential changeable signal;
an input module, an output end of the input module electrically connected to a first node;
a pull-up module comprising a first pull-up unit, a second pull-up unit, a third pull-up unit, and a fourth pull-up unit, wherein each of the first pull-up unit, the second pull-up unit, the third pull-up unit, and the fourth pull-up unit is electrically connected to the first node, and the first pull-up unit comprises a first transistor and a second transistor;
a second layout;
a pull-down control module, the output end of the pull-down control module electrically connected to a second node;
a pull-down module, comprising at least one pull-down unit, the control end of the at least one pull-down unit electrically connected to the second node, wherein the output end of a first pull-down unit is electrically connected to one of the source and the drain of the second transistor, and the input end of the at least one pull-down unit is electrically connected to the second layout;
a feedback module, the input end of the feedback module electrically connected the second layout, the output end of the feedback module electrically connected to the first node, the control end of the feedback module electrically connected to the second node; and
a discharging module, comprising at least one discharging unit, the input end of the at least one discharging unit electrically connected to the second layout, wherein the output end of a first discharging unit is electrically connected to the other one of the source and the drain of the first transistor, and the control end of the at least one discharging unit is electrically connected to the second node.