公开(公告)号：US11587481B2

公开(公告)日：2023-02-21

申请号：US17561390

申请日：2021-12-23

Applicant: LG Display Co., Ltd.

Inventor： SangGoo Kwon ,  MooKyoung Hong

IPC: G09G3/3233 ,  G09G3/00 ,  G09G3/20

Abstract: A display device can include a display panel having a plurality of sub pixels, each of the sub pixels including a switching transistor, a driving transistor, a sensing transistor, a storage capacitor, and a light emitting element; and a detector configured to sense a voltage difference between a first electrode of the sensing transistor and a second electrode of the sensing transistor for determining that an anode and a cathode of the light emitting element are shorted, in which a gate electrode of the switching transistor and a gate electrode of the sensing transistor are connected to a same gate line.

公开(公告)号：US09934729B2

公开(公告)日：2018-04-03

申请号：US15657448

申请日：2017-07-24

Applicant: LG DISPLAY CO., LTD.

Inventor： MooKyoung Hong ,  SangGoo Kwon

IPC: G09G3/30 ,  G09G3/3258 ,  G09G3/3233 ,  G09G3/325

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G3/325 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2320/043 ,  G09G2330/10 ,  G09G2330/12

Abstract: An organic light-emitting display device includes: an organic light-emitting display panel including: a plurality of subpixels including: an organic light-emitting diode (OLED), a driving transistor (DT) driving the OLED including a first transistor between a first node of the DT and a data line, and a second transistor (T2) between a second node of the DT and a reference voltage line having a reference voltage (RV) applied, a sensor, and a sampling switch, wherein, during an OLED short detection period for detecting a short circuit between the first electrode and a second electrode of the OLED: the DT and the first transistor are off, when the T2 is turned off, the RV line is initialized when the RV is applied thereto, after the T2 is turned on, the sampling switch is turned on to connect the sensor and the RV line, and the sensor measures the RV line voltage.