公开(公告)号：US20210201782A1

公开(公告)日：2021-07-01

申请号：US17116770

申请日：2020-12-09

Applicant: LG Display Co., Ltd.

Inventor： Hyung-Uk JANG ,  Byeong-Seong SO ,  Young-Sung CHO

IPC: G09G3/3233

Abstract: An electroluminescent display device having a plurality of pixels is disclosed. Each pixel includes a driving transistor having a gate connected to a first node, a source connected to a third node, and a drain connected to a fourth node, the driving transistor generating pixel current corresponding to a data voltage when a high-level source voltage is applied to the third node, a light emitting element connected between the fourth node and an input terminal for a low-level source voltage, an internal compensator controlling voltages of the first to fourth nodes in accordance with operations of a plurality of switching transistors in an initialization period, a data writing period and an emission period, and a refresh transistor configured to apply the high-level source voltage to the second node in accordance with a scan signal in a refresh period preceding an initialization period.

公开(公告)号：US20210201827A1

公开(公告)日：2021-07-01

申请号：US17116750

申请日：2020-12-09

Applicant: LG Display Co., Ltd.

Inventor： Hyung-Uk JANG ,  Chul NAM ,  Byeong-Seong SO ,  Young-Sung CHO

IPC: G09G3/3291 ,  G09G3/3266

Abstract: An electroluminescent display device having a plurality of pixels is disclosed. Each pixel includes a driving transistor having a gate connected to a first node, a source connected to a third node, and a drain connected to a fourth node, to generate pixel current corresponding to a data voltage when a high-level source voltage is applied to the third node, a light emitting element connected between the fourth node and an input terminal for a low-level source voltage, an internal compensator including first and second capacitors, and switching transistors, and a kick-back compensation transistor to apply a DC voltage higher than an initialization voltage to the first node in a kick-back compensation period between an initialization period and a data writing period.