US 11,810,522 B2
Pixel circuit driving method, pixel circuit therefor, and display module using the same
Chun Won Byun, Daejeon (KR); Chan Mo Kang, Daejeon (KR); Nam Sung Cho, Daejeon (KR); Byong Deok Choi, Seoul (KR); and Yong Duck Kim, Seoul (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR); and IUCF-HYU (Industry-University Cooperation Foundation Hanyang University), Seoul (KR)
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR); and IUCF-HYU (Industry-University Cooperation Foundation Hanyang University), Seoul (KR)
Filed on Sep. 8, 2022, as Appl. No. 17/940,431.
Claims priority of application No. 10-2022-0006497 (KR), filed on Jan. 17, 2022.
Prior Publication US 2023/0230550 A1, Jul. 20, 2023
Int. Cl. G09G 3/3291 (2016.01); G09G 3/3233 (2016.01); G09G 3/20 (2006.01)
CPC G09G 3/3291 (2013.01) [G09G 3/2018 (2013.01); G09G 3/3233 (2013.01); G09G 2310/027 (2013.01); G09G 2320/0633 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pixel circuit driving method of controlling an operation of a light-emitting element provided in a pixel of a display panel, the pixel circuit driving method comprising:
applying pulse amplitude modulation (PAM) signals having a plurality of levels to a first terminal of a first transistor having a second terminal connected to a control terminal of a second transistor configured to drive the light-emitting element with a corresponding current according to a gray scale required for the light-emitting element; and
applying a PAM signal of any one level selected from the PAM signals to the control terminal of the second transistor during each sub-frame time corresponding to a turn-on time of the first transistor controlled by a pulse width modulation (PWM) signal having a plurality of sub-frames in a single frame according to the gray scale.