US 12,412,524 B2
Pixel driving circuit, pixel driving method, and display panel
Peng Wan, Guangdong (CN)
Assigned to Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen (CN)
Appl. No. 17/772,194
Filed by Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Guangdong (CN)
PCT Filed Apr. 15, 2022, PCT No. PCT/CN2022/086966
§ 371(c)(1), (2) Date Apr. 27, 2022,
PCT Pub. No. WO2023/184591, PCT Pub. Date Oct. 5, 2023.
Claims priority of application No. 202210336370.7 (CN), filed on Mar. 31, 2022.
Prior Publication US 2024/0304140 A1, Sep. 12, 2024
Int. Cl. G09G 3/3233 (2016.01)
CPC G09G 3/3233 (2013.01) [G09G 2300/0842 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0242 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A pixel driving circuit, comprising:
a light emitting element electrically connected between a first node and a second node;
a driving transistor connected in series between the second node and the light emitting element, wherein the driving transistor is configured to generate a driving current; and
an auxiliary transistor connected in series between a third node and the light emitting element, where the auxiliary transistor is configured to generate an auxiliary current to jointly drive the light emitting element with the driving current;
wherein a gate of the driving transistor is electrically connected to a gate of the auxiliary transistor;
wherein the third node is loaded with an auxiliary voltage that is less than a voltage at a connection point between the auxiliary transistor and the light emitting element; and
wherein the channel width of the driving transistor is in a range of 10 microns to 60 microns, and the channel width of the auxiliary transistor is less than or equal to 10 microns.