公开(公告)号：US11847975B2

公开(公告)日：2023-12-19

申请号：US18050988

申请日：2022-10-29

Applicant: LG DISPLAY CO., LTD.

Inventor： Kyung Rok Kim ,  Min Kim ,  Hyuck Jun Kim

IPC: G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2300/0452 ,  G09G2310/027 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/0242

Abstract: A display device includes a display panel configured to display an image, a gate driver connected to gate lines of the display panel, and a data driver connected to data lines of the display panel, and the data driver provides duplicates of red, green and blue data signals, except for a white data signal, in a digital data signal having a 4:2:0 format externally input thereto, and converts the white data signal, the red, green and blue data signals, and the duplicated red, green and blue data signals, thereby outputting an analog data voltage having a 4:4:4 format.

公开(公告)号：US20240210758A1

公开(公告)日：2024-06-27

申请号：US18520302

申请日：2023-11-27

Applicant: LG Display Co., Ltd.

Inventor： Changwoo Lee ,  SunYoon Kim ,  Min Kim ,  Sanggoo Jeong ,  Juyoung Noh

IPC: G02F1/1335 ,  G02F1/13357 ,  G09G3/32

CPC classification number: G02F1/133612 ,  G02F1/133603 ,  G09G3/32 ,  G09G2300/0842 ,  G09G2310/027 ,  G09G2310/0286 ,  G09G2310/0297

Abstract: The present disclosure relates to a backlight unit, a display device, and a driving method. A sensing MUX circuit senses a voltage of a first light emitting node and a voltage of a second light emitting node, and then, detects whether a first light source connected between the first light emitting node and the second light emitting node is defective, whereby it is possible to specify and detect a defective light source.

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：US20240221685A1

公开(公告)日：2024-07-04

申请号：US18390307

申请日：2023-12-20

Applicant: LG Display Co., Ltd.

Inventor： Kyung-Rok Kim ,  Hyuckjun Kim ,  Min Kim

IPC: G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0294 ,  G09G2310/08

Abstract: A display device may include a plurality of subpixels respectively connected to a plurality of data lines; a data driving circuit configured to convert a compensated digital image data into an analog data voltage and to supply the analog data voltage to the data lines; a large-capacity memory configured to store initial compensation data based on a characteristic value for each of the plurality of subpixels; a high-speed memory configured to store sampled compensation data sampled from the initial compensation data for less than all of the plurality of subpixels in one frame; and a timing controller configured to control the gate driving circuit and the data driving circuit, to determine final compensation data based on at least one of the sampled compensation data and the initial compensation data, and to output the compensated digital image data based on an input image data and the final compensation data.

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.