US 12,361,855 B2
Gate drive circuit and display panel
Bing Rao, Guangdong (CN)
Assigned to TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
Appl. No. 17/755,457
Filed by TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
PCT Filed Apr. 20, 2022, PCT No. PCT/CN2022/087802
§ 371(c)(1), (2) Date Apr. 29, 2022,
PCT Pub. No. WO2023/193297, PCT Pub. Date Oct. 12, 2023.
Claims priority of application No. 202210364785.5 (CN), filed on Apr. 7, 2022.
Prior Publication US 2024/0153431 A1, May 9, 2024
Int. Cl. G09G 3/20 (2006.01); G09G 3/3266 (2016.01); G09G 3/36 (2006.01)
CPC G09G 3/2092 (2013.01) [G09G 3/3266 (2013.01); G09G 3/20 (2013.01); G09G 3/3674 (2013.01); G09G 2300/0408 (2013.01); G09G 2310/0264 (2013.01); G09G 2310/0267 (2013.01); G09G 2310/0286 (2013.01); G09G 2310/08 (2013.01); G09G 2330/028 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A gate drive circuit comprising N-stages GOA circuits and signal conversion circuits connected in a one-to-one correspondence with the GOA circuits;
wherein for at least one of the N stages, the GOA circuit and the signal conversion circuit are both electrically connected to two signal lines for transmitting input signals to be processed, and
wherein the signal conversion circuit receives the input signals to be processed from the two signal lines, converts the input signals to be processed into a control signal, and transmits the control signal to the GOA circuit; the GOA circuit performs a corresponding operation according to the control signal and the input signals to be processed from the two signal lines; the signal to be processed is a signal transmitted to the GOA circuit; and the control signal is a gate high-level signal or a pull-down control signal,
wherein when the control signal is the gate high-level signal, the signal to be processed comprises a first pull-down control signal transmitted by a first pull-down control line as one of the two signal lines and a second pull-down control signal transmitted by a second pull-down control line as another one of the two signal lines; the signal conversion circuit is directly connected to the GOA circuit, the first pull-down control line, and the second pull-down control line, respectively; and the GOA circuit is directly connected to the first pull-down control line and the second pull-down control line, respectively,
wherein the signal conversion circuit respectively converts the first pull-down control signal and the second pull-down control signal into the gate high-level signal, and transmits the gate high-level signal to the GOA circuit,
wherein when the control signal is the pull-down control signal, the signal to be processed comprises an original pull-down control signal transmitted by a pull-down control line as one of the two signal lines, and the gate high-level signal transmitted by a gate control line as another one of the two signal lines; the signal conversion circuit is directly connected to the GOA circuit, the pull-down control line, and the gate control line, respectively; the GOA circuit is directly connected to the pull-down control line and the gate control line, respectively,
wherein the signal conversion circuit converts the original pull-down control signal and the gate high-level signal into the pull-down control signal, and transmits the pull-down control signal to the GOA circuit, and
wherein the signal conversion circuit comprises a third switching unit and a fourth switching unit; a first terminal and a third terminal of the third switching unit are connected to the gate control line, and a second terminal of the third switching unit is directly connected to a first terminal of the fourth switching unit and the GOA circuit, respectively; and a second terminal of the fourth switching unit is connected to the pull-down control line, and a third terminal of the fourth switching unit is connected with a Vss signal.