公开(公告)号：US20220383825A1

公开(公告)日：2022-12-01

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：US20230215383A1

公开(公告)日：2023-07-06

申请号：US17954290

申请日：2022-09-27

Applicant: LG Display Co., Ltd.

Inventor： Kyung Hyun LIM ,  Myung Gi LIM ,  Sang Goo JEONG

IPC: G09G3/3291 ,  G09G3/3233

CPC classification number: G09G3/3291 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2360/10 ,  G09G2300/0819 ,  G09G2310/0297 ,  G09G2310/0291 ,  G09G2330/08 ,  G09G2330/021 ,  G09G2330/026 ,  G09G2330/027 ,  G09G2310/0286 ,  G09G2310/0289 ,  G09G2320/043

Abstract: The present disclosure relates to an electroluminescent display device and a method for sensing electrical characteristics thereof, and the electroluminescent display device includes a display panel including a plurality of pixels including a sensing pixel and a non-sensing pixel connected to each data line, the plurality of pixels sharing one sensing line, a sensing circuit configured to sense an electrical characteristic value of the sensing pixel based on a sensing voltage applied to the shared sensing line, and a feedback unit configured to apply a feedback voltage according to the sensing voltage applied to the shared sensing line to the data line of the non-sensing pixel.