US 12,190,765 B2
GOA circuit and display panel
Xiang Yin, Shenzhen (CN)
Assigned to Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen (CN)
Appl. No. 17/642,959
Filed by Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen (CN)
PCT Filed Feb. 18, 2022, PCT No. PCT/CN2022/076826
§ 371(c)(1), (2) Date Aug. 17, 2023,
PCT Pub. No. WO2023/151111, PCT Pub. Date Aug. 17, 2023.
Claims priority of application No. 202210132282.5 (CN), filed on Feb. 14, 2022.
Prior Publication US 2024/0046830 A1, Feb. 8, 2024
Int. Cl. G09G 3/20 (2006.01)
CPC G09G 3/20 (2013.01) [G09G 2300/0408 (2013.01); G09G 2310/0267 (2013.01); G09G 2330/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A gate driver on array (GOA) circuit, comprising a plurality of cascaded GOA units, and an nth level GOA unit comprising a pull-up control module, a pull-up output module, a pull-down control module, a pull-down output module, a pull-down maintenance module, and a random location module; wherein
the pull-up control module is configured to receive a (n−m)th stage transmission signal and is electrically connected to a pull-up node for outputting the (n−m)th stage transmission signal to the pull-up node under a control of the (n−m)th stage transmission signal; both n and m are integers greater than 0, and n>m;
the pull-up output module is configured to receive a first clock signal and a second clock signal, and is electrically connected to the pull-up node, an nth stage scanning signal output end, and an nth stage transmission signal output end for outputting an nth stage scanning signal and an nth stage transmission signal under a control of a potential of the pull-up node, the first clock signal, and the second clock signal;
the pull-down control module is configured to receive a (n+m)th stage transmission signal, a control signal, and a first reference low-level signal, and is electrically connected to the pull-up node for pulling down the potential of the pull-up node under a control of the (n+m)th stage transmission signal, the control signal, and the first reference low-level signal;
the pull-down maintenance module is configured to receive a low-frequency clock signal, the (n−m)th stage transmission signal, the first reference low-level signal, and a second reference low-level signal, and is electrically connected to the pull-up node and a pull-down node for maintaining the potential of the pull-down node;
the pull-down output module is configured to receive the first reference low-level signal and a third reference low-level signal, and is electrically connected to the pull-down node, the nth stage scanning signal output end, and the nth stage transmission signal output end for pulling down a potential of the nth stage scanning signal and a potential of the nth stage transmission signal under a control of the first reference low-level signal and the third reference low-level signal; and
the random location module is configured to receive the (n−m)th stage transmission signal, the first reference low-level signal, a selection signal, a reset signal, and a reference high-level signal for pulling up the potential of the pull-up node during a horizontal blank period under a control of the (n−m)th stage transmission signal, the first reference low-level signal, the selection signal, the reset signal, and the reference high-level signal.