US 11,942,033 B2
Driving circuit and display panel
Mian Zeng, Hubei (CN); and Liang Sun, Hubei (CN)
Assigned to Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Wuhan (CN)
Appl. No. 17/606,795
Filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Hubei (CN)
PCT Filed Jun. 29, 2021, PCT No. PCT/CN2021/103153
§ 371(c)(1), (2) Date Oct. 27, 2021,
PCT Pub. No. WO2022/252321, PCT Pub. Date Dec. 8, 2022.
Claims priority of application No. 202110618746.9 (CN), filed on Jun. 3, 2021.
Prior Publication US 2024/0021154 A1, Jan. 18, 2024
Int. Cl. G09G 3/3233 (2016.01)
CPC G09G 3/3233 (2013.01) [G09G 2300/0852 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A driving circuit, comprising:
a driving module comprising a light-emitting device, a first transistor, and a connection transistor, wherein the light-emitting device and the first transistor are connected in series between a first voltage terminal and a second voltage terminal, and one of a source and a drain of the first transistor is electrically connected to a first signal line; the connection transistor comprises a first sub-connection transistor and a second sub-connection transistor connected in series, the first sub-connection transistor and the second sub-connection transistor have a connection node, one of a source and a drain of the first sub-connection transistor is electrically connected to a gate of the first transistor, and a gate of the first sub-connection transistor and a gate of the second sub-connection transistor are electrically connected; and
an additional module comprising a second transistor, wherein one of a source and a drain of the second transistor is electrically connected to the first signal line, and the other of the source and the drain of the second transistor is electrically connected to the connection node and a gate of the second transistor, and a threshold voltage of the second transistor is the same as a threshold voltage of the first transistor.