US 11,948,510 B2
Pixel circuit and display device having the same
Soojung Chae, Seoul (KR); Seokhwan Bang, Yongin-si (KR); Seokje Seong, Seongnam-si (KR); Jinseok Oh, Pyeongtaek-si (KR); Woobin Lee, Hwaseong-si (KR); and June Whan Choi, Seoul (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Dec. 12, 2022, as Appl. No. 18/064,813.
Claims priority of application No. 10-2022-0071251 (KR), filed on Jun. 13, 2022.
Prior Publication US 2023/0402007 A1, Dec. 14, 2023
Int. Cl. G09G 3/32 (2016.01); G09G 3/3233 (2016.01)
CPC G09G 3/3233 (2013.01) [G09G 2300/0426 (2013.01); G09G 2300/0809 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pixel circuit comprising:
a first driving transistor comprising a gate electrode connected to a first node, a first electrode configured to receive a first power voltage, and a second electrode connected to a second node;
a second driving transistor comprising a gate electrode connected to the second node, a first electrode configured to receive the first power voltage, a second electrode connected to the second node, and a back gate electrode connected to the first node;
a write transistor comprising a gate electrode configured to receive a write gate signal, a first electrode configured to receive a data voltage, and a second electrode connected to the first node;
an initialization transistor comprising a gate electrode configured to receive an initialization gate signal, a first electrode configured to receive an initialization voltage, and a second electrode connected to the second node;
a storage capacitor comprising a first electrode connected to the first node, and a second electrode connected to the second node; and
a light emitting element comprising a first electrode connected to the second node, and a second electrode configured to receive a second power voltage.