公开(公告)号：US11557258B2

公开(公告)日：2023-01-17

申请号：US17743565

申请日：2022-05-13

Applicant: LG DISPLAY CO., LTD.

Inventor： Min Koo Kim ,  Tae Young Lee ,  Sang Goo Jeong

IPC: G09G3/3291

Abstract: In an electroluminescence display apparatus and a driving method of an electroluminescence display apparatus, the electroluminescence display apparatus includes a pixel connected to a data line and a reference voltage line, the pixel including a driving element configured to generate a driving current based on a sensing data voltage supplied through the data line and a reference voltage supplied through the reference voltage line, and a level of the driving current being proportional to a level of the sensing data voltage, a comparison and tracking circuit configured to previously determine a target current range between a reference low current and a reference high current and change current tracking data for adjusting a level of the sensing data voltage until the driving current input through the reference voltage line is within the target current range, and a digital-to-analog converter configured to adjust a level of the sensing data voltage so as to be proportional to a size of the current tracking data and supply the level-adjusted sensing data voltage to the data line.

公开(公告)号：US11804179B2

公开(公告)日：2023-10-31

申请号：US17538477

申请日：2021-11-30

Applicant: LG Display Co., Ltd.

Inventor： Min Kim ,  Hyuck Jun Kim ,  Ji Su Choi ,  Tae Young Lee

IPC: G09G3/3233 ,  G09G3/3275

CPC classification number: G09G3/3233 ,  G09G3/3275 ,  G09G2300/0426 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0295

Abstract: An electroluminescent display device according to an embodiment of the present disclosure includes a pixel including a driving element having a gate electrode connected to a data line and a source electrode connected to a readout line, a sensing circuit configured to sense a voltage of the readout line which changes according to a pixel current flowing through the driving element during sensing operation, and a boosting circuit connected between the data line and the readout line and configured to change a voltage of the data line according to the changed voltage in the readout line during the sensing operation.

公开(公告)号：US11763755B2

公开(公告)日：2023-09-19

申请号：US17734381

申请日：2022-05-02

Applicant: LG Display Co., Ltd.

Inventor： Hyuck Jun Kim ,  Tae Young Lee ,  Ji Su Choi

IPC: G09G3/3275 ,  G09G3/3233

CPC classification number: G09G3/3275 ,  G09G3/3233 ,  G09G2300/0809 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2320/0238 ,  G09G2330/021

Abstract: A light emitting display (LED) device can include a display panel configured to display an image; and a data driver including a panel driving circuit configured to drive the display panel and a panel sensing circuit configured to sense a condition of the display panel, in which the panel driving circuit includes a first data voltage output circuit to output a voltage to both of a first data line and a first reference line of the display panel to display black on a first sub-pixel included in the display panel.

公开(公告)号：US11676534B2

公开(公告)日：2023-06-13

申请号：US17541544

申请日：2021-12-03

Applicant: LG DISPLAY CO., LTD.

Inventor： Hyuck Jun Kim ,  Dong Kyun Woo ,  Tae Young Lee

IPC: G09G3/3233 ,  G09G3/3275

CPC classification number: G09G3/3233 ,  G09G3/3275 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0295 ,  G09G2320/045

Abstract: A light emitting display device includes a display panel configured to display an image, a driver configured to drive the display panel, and a compensation circuit configured to repeat a process of obtaining a sensing voltage from a sub-pixel included in the display panel, storing the sensing voltage, outputting the stored sensing voltage to the sub-pixel, and obtaining a sensing voltage from the sub-pixel to integrate the sensing voltage.

公开(公告)号：US11580896B2

公开(公告)日：2023-02-14

申请号：US17469649

申请日：2021-09-08

Applicant: LG Display Co., Ltd.

Inventor： Myung Gi Lim ,  Tae Young Lee ,  Ji Su Choi

IPC: G09G3/32

Abstract: An electroluminescence display apparatus includes a display panel including a first pixel and a second pixel, a first current integrator connected to the first pixel through a first sensing channel to sense a first current from the first pixel to generate a first output voltage, a second current integrator connected to the second pixel through a second sensing channel to sense a second current from the second pixel to generate a second output voltage, and a sampling capacitor connected to an output terminal of the first current integrator at one electrode thereof and connected to an output terminal of the second current integrator at the other electrode thereof, thereby sampling the first output voltage and the second output voltage.

公开(公告)号：US20220208095A1

公开(公告)日：2022-06-30

申请号：US17538477

申请日：2021-11-30

Applicant: LG Display Co., Ltd.

Inventor： Min Kim ,  Hyuck Jun Kim ,  Ji Su Choi ,  Tae Young Lee

IPC: G09G3/3233 ,  G09G3/3275

Abstract: An electroluminescent display device according to an embodiment of the present disclosure includes a pixel including a driving element having a gate electrode connected to a data line and a source electrode connected to a readout line, a sensing circuit configured to sense a voltage of the readout line which changes according to a pixel current flowing through the driving element during sensing operation, and a boosting circuit connected between the data line and the readout line and configured to change a voltage of the data line according to the changed voltage in the readout line during the sensing operation.