US 12,236,867 B2
Pixel driving circuit, display panel, method of driving display panel
Lujiang Huangfu, Beijing (CN); Li Wang, Beijing (CN); Jianchao Zhu, Beijing (CN); Libin Liu, Beijing (CN); and Yu Feng, Beijing (CN)
Assigned to BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/789,174
Filed by BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Sep. 30, 2021, PCT No. PCT/CN2021/122038
§ 371(c)(1), (2) Date Jun. 25, 2022,
PCT Pub. No. WO2023/050255, PCT Pub. Date Apr. 6, 2023.
Prior Publication US 2024/0177660 A1, May 30, 2024
Int. Cl. G09G 3/3233 (2016.01)
CPC G09G 3/3233 (2013.01) [G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0247 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A pixel driving circuit, comprising:
a storage capacitor comprising a first capacitor electrode and a second capacitor electrode;
a driving transistor configured to generate a driving current; and
a switch configured to control connection or disconnection between a gate electrode of the driving transistor and the first capacitor electrode;
a reset transistor having a first electrode connected to an initialization signal line, a second electrode connected to the first capacitor electrode;
a data write transistor having a first electrode connected to a data line, and a gate electrode connected to a gate line;
a first transistor having a first electrode connected to a second electrode of the driving transistor, a gate electrode connected to a light emission control signal line, and a second electrode connected to an anode of a light emitting element; and
a second transistor having a first electrode connected to the first capacitor electrode, and a second electrode connected to the second electrode of the driving transistor;
wherein the switch comprises a transistor comprising a first electrode connected to the first capacitor electrode, a second electrode connected to the gate electrode of the driving transistor, and a gate electrode connected to a scan line;
the reset transistor and the second transistor are n-type transistors; and
the driving transistor, the first transistor, the data write transistor, the transistor of the switch are p-type transistors.