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：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：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.