公开(公告)号：US20230290307A1

公开(公告)日：2023-09-14

申请号：US18120104

申请日：2023-03-10

Applicant: Samsung Display Co., Ltd.

Inventor： KYOUNGJU SHIN ,  YANGSOO KIM ,  JUNGKOOK PARK ,  JAEYOUNG OH ,  WOOJIN LEE ,  JAEHO JUNG

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  H10K59/35

Abstract: A pixel circuit of a display device includes first to sixth thin-film transistors, and first and second capacitors. The first thin-film transistor generates a driving current, the sixth thin-film transistor is connected between a light-emitting element and the first thin-film transistor and controls a transfer of the driving current, and the second capacitor is connected between a gate electrode of the sixth thin-film transistor and the light-emitting element.

公开(公告)号：US20230186832A1

公开(公告)日：2023-06-15

申请号：US17968571

申请日：2022-10-18

Applicant: Samsung Display Co., Ltd.

Inventor： KYOUNGJU SHIN ,  DOHYUN KANG ,  YANGSOO KIM ,  JUNGKOOK PARK ,  MOONSANG HWANG

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0426 ,  G09G2310/0278 ,  G09G2300/0842 ,  G09G2320/0626

Abstract: A pixel circuit includes a light emitting element, a driving transistor, a first emission transistor applying a first power voltage to the driving transistor in response to a first emission signal, a second emission transistor applying the driving current to the light emitting element in response to a second emission signal, a first initialization transistor applying a first initialization voltage to an anode electrode of the light emitting element in response to the second emission signal, a data write transistor, a compensation transistor, a second initialization transistor, and a storage capacitor. A first off-duty ratio which is a ratio of a high voltage level period of the first emission signal in one frame is determined according to a set luminance level, and a second off-duty ratio which is a ratio of a high voltage level period of the second emission signal in the one frame is fixed.