公开(公告)号：US20240221673A1

公开(公告)日：2024-07-04

申请号：US18543637

申请日：2023-12-18

Applicant: LG Display Co., Ltd.

Inventor： Insu Hwang ,  DongYoon Lee ,  Kimin Son

IPC: G09G3/3258 ,  H10K59/131

CPC classification number: G09G3/3258 ,  H10K59/131 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2330/021

Abstract: A display device is disclosed. The display device comprises: a driving transistor drives a light emitting element; a scanning transistor connected between a first node of the driving transistor and a data line; and a sensing transistor connected between a second node of the driving transistor and a reference voltage line, wherein a period of time during which a characteristic value of the sensing transistor is sensed includes a voltage control period, a voltage tracking period, and a sampling period, and during the voltage control period, a first sensing voltage is supplied to the data line, a second sensing voltage is supplied to a third node of the driving transistor, a third sensing voltage is supplied to gate nodes of the scanning transistor and the sensing transistor, and a fourth sensing voltage is supplied to the reference voltage line. Accordingly, changes of characteristic values of the sensing transistor are sensed.

公开(公告)号：US12249286B2

公开(公告)日：2025-03-11

申请号：US18543637

申请日：2023-12-18

Applicant: LG Display Co., Ltd.

Inventor： Insu Hwang ,  DongYoon Lee ,  Kimin Son

IPC: G09G3/3258 ,  H10K59/131

Abstract: A display device is disclosed. The display device comprises: a driving transistor drives a light emitting element; a scanning transistor connected between a first node of the driving transistor and a data line; and a sensing transistor connected between a second node of the driving transistor and a reference voltage line, wherein a period of time during which a characteristic value of the sensing transistor is sensed includes a voltage control period, a voltage tracking period, and a sampling period, and during the voltage control period, a first sensing voltage is supplied to the data line, a second sensing voltage is supplied to a third node of the driving transistor, a third sensing voltage is supplied to gate nodes of the scanning transistor and the sensing transistor, and a fourth sensing voltage is supplied to the reference voltage line. Accordingly, changes of characteristic values of the sensing transistor are sensed.

公开(公告)号：US12236877B2

公开(公告)日：2025-02-25

申请号：US18520043

申请日：2023-11-27

Applicant: LG Display Co., Ltd.

Inventor： DongYoon Lee ,  InHyo Han

IPC: G09G3/3233

Abstract: A display device and a driving method thereof. While a turn-on gate signal is being supplied to a first gate line, a dummy voltage is supplied to a first type data line, and a first image frame voltage for expressing a first image frame line is supplied to a second type data line. The readability of an image frame is improved.