US 12,131,700 B2
Pixel circuit, pixel driving method, light emitting base plate and light emitting apparatus
Tuo Sun, Beijing (CN); Ying Zhou, Beijing (CN); and Yichi Zhang, Beijing (CN)
Assigned to BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/792,755
Filed by Beijing BOE Technology Development Co., Ltd., Beijing (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Aug. 30, 2021, PCT No. PCT/CN2021/115407
§ 371(c)(1), (2) Date Jul. 14, 2022,
PCT Pub. No. WO2023/028772, PCT Pub. Date Mar. 9, 2023.
Prior Publication US 2024/0242668 A1, Jul. 18, 2024
Int. Cl. G09G 3/32 (2016.01); G09G 3/3233 (2016.01); H10K 59/121 (2023.01); H10K 59/131 (2023.01)
CPC G09G 3/3233 (2013.01) [G09G 3/32 (2013.01); G09G 2300/0426 (2013.01); G09G 2300/0439 (2013.01); G09G 2330/021 (2013.01); H10K 59/121 (2023.02); H10K 59/131 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A pixel circuit, wherein the pixel circuit comprises a first driving circuit, a first light emitting device, a second light emitting device and a second driving circuit that are sequentially connected in series;
the first driving circuit comprises a first driving transistor, a source electrode of the first driving transistor is connected to a first power-supply terminal, and a drain electrode of the first driving transistor is connected to a first electrode of the first light emitting device;
the second driving circuit comprises a second driving transistor, a source electrode of the second driving transistor is connected to a second power-supply terminal, and a drain electrode of the second driving transistor is connected to a first electrode of the second light emitting device;
a second electrode of the first light emitting device is connected to a second electrode of the second light emitting device; and
a channel type of the first driving transistor and a channel type of the second driving transistor are different.