公开(公告)号：US11670223B2

公开(公告)日：2023-06-06

申请号：US17559585

申请日：2021-12-22

Applicant: LG Display Co., Ltd.

Inventor： Min Koo Kim ,  Kyung Rok Kim ,  Yo Han Hong

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0294 ,  G09G2310/0297

Abstract: An electroluminescent display device includes a display panel including a plurality of pixels connected to a plurality of sensing lines, a plurality of sampling circuits configured to simultaneously sample driving characteristics of the pixels to generate sampling outputs, a plurality of sampling multiplexers configured to divide the sampling outputs into n groups and to alternately select group sampling outputs, a plurality of scalers individually connected to the sampling multiplexers, and a global multiplexer configured to selectively connect outputs of the scalers to an analog-to-digital conversion circuit, wherein the number of scalers is less than the number of sampling circuits.

公开(公告)号：US11817058B2

公开(公告)日：2023-11-14

申请号：US17559509

申请日：2021-12-22

Applicant: LG Display Co., Ltd.

Inventor： Yo Han Hong ,  Kyung Rok Kim ,  Dong Kyu Woo

IPC: G09G3/3275 ,  G09G3/3233

CPC classification number: G09G3/3275 ,  G09G3/3233 ,  G09G2310/0294 ,  G09G2320/0295 ,  G09G2320/045

Abstract: A light emitting display device includes a display panel configured to display an image, a data driver configured to supply a data voltage to data lines of the display panel, and a sensing circuit configured to obtain a sensing voltage through sensing lines of the display panel after reflecting a negative impedance value canceling impedance differences of the sensing lines.

公开(公告)号：US20220208080A1

公开(公告)日：2022-06-30

申请号：US17559585

申请日：2021-12-22

Applicant: LG Display Co., Ltd.

Inventor： Min Koo Kim ,  Kyung Rok Kim ,  Yo Han Hong

IPC: G09G3/32

Abstract: An electroluminescent display device includes a display panel including a plurality of pixels connected to a plurality of sensing lines, a plurality of sampling circuits configured to simultaneously sample driving characteristics of the pixels to generate sampling outputs, a plurality of sampling multiplexers configured to divide the sampling outputs into n groups and to alternately select group sampling outputs, a plurality of scalers individually connected to the sampling multiplexers, and a global multiplexer configured to selectively connect outputs of the scalers to an analog-to-digital conversion circuit, wherein the number of scalers is less than the number of sampling circuits.

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：US20220208126A1

公开(公告)日：2022-06-30

申请号：US17559509

申请日：2021-12-22

Applicant: LG Display Co., Ltd.

Inventor： Yo Han Hong ,  Kyung Rok Kim ,  Dong Kyu Woo

IPC: G09G3/3291 ,  G09G3/3225

Abstract: A light emitting display device includes a display panel configured to display an image, a data driver configured to supply a data voltage to data lines of the display panel, and a sensing circuit configured to obtain a sensing voltage through sensing lines of the display panel after reflecting a negative impedance value canceling impedance differences of the sensing lines.