US 11,727,864 B2
Pixel circuit boosted by a boost capacitor
Jangmi Kang, Seoul (KR); Junhyun Park, Suwon-si (KR); Minjae Jeong, Hwaseong-si (KR); and Hyeongseok Kim, Hwaseong-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-Si (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on May 19, 2022, as Appl. No. 17/748,521.
Claims priority of application No. 10-2021-0111975 (KR), filed on Aug. 24, 2021.
Prior Publication US 2023/0069447 A1, Mar. 2, 2023
Int. Cl. G09G 3/32 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 2300/0842 (2013.01); G09G 2310/027 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pixel circuit comprising:
a light emitting element;
a write transistor configured to apply a data voltage to an input node in response to a write gate signal;
a storage capacitor configured to store the data voltage;
a driving transistor configured to apply a driving current to the light emitting element based on the data voltage;
a first compensation transistor configured to compensate for a threshold voltage of the driving transistor in response to a compensation gate signal;
a first initialization transistor configured to apply a first initialization voltage to a control electrode of the driving transistor in response to an initialization gate signal; and
a boost capacitor including a first electrode to which a previous initialization gate signal applied to a previous pixel row is applied and a second electrode connected to the control electrode of the driving transistor.