公开(公告)号：US20190164503A1

公开(公告)日：2019-05-30

申请号：US16204143

申请日：2018-11-29

Applicant: LG DISPLAY CO., LTD.

Inventor： Jooyoung AN ,  Hyojung PARK ,  Jeisung LEE ,  Euiyeol OH

IPC: G09G3/3291 ,  G09G3/3266 ,  G09G3/3233 ,  G09G3/3258

Abstract: Disclosed are an electroluminescent display and a driving method thereof, the method comprising: generating a predicted value, indicating a degree of degradation of pixels, by accumulating pixel data of an input image at each pixel: and generating a compensation value by adjusting the predicted value to a current measurement value which is obtained by measuring a current in a power line connected to the pixels. Compensation data, which is to be written into each of the pixels, is generated by modulating the pixel data with the compensation value.

公开(公告)号：US20220122548A1

公开(公告)日：2022-04-21

申请号：US17460080

申请日：2021-08-27

Applicant: LG Display Co., Ltd.

Inventor： JinTaek CHOI ,  Hyojung PARK ,  Seongmin CHOI

IPC: G09G3/3275

Abstract: Embodiments of the disclosure relate to a controller and a display device. As the display device is driven, the stress value is accumulated, and a compensation value based on the accumulated stress value is applied upon driving the display. Thus, it is possible to compensate for degradation of subpixels in real time. Further, the amount of degradation of the subpixel is sensed at a preset time, and the stress value is corrected based on the degradation amount sensing data. Thus, it is possible to enhance the accuracy of real-time compensation for degradation of subpixels while minimizing sensing of degradation of subpixels.

公开(公告)号：US20230252946A1

公开(公告)日：2023-08-10

申请号：US18012550

申请日：2021-06-21

Applicant: LG DISPLAY CO., LTD. ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY

Inventor： Joon-Hyuk CHANG ,  Kwanghwan JI ,  Kwan-Ho PARK ,  Kiseok CHANG ,  Junghoon SEO ,  Kipyo HONG ,  Hyojung PARK ,  Seunghyuck LEE

IPC: G09G3/3291 ,  G09G3/3266 ,  G06N3/08

CPC classification number: G09G3/3291 ,  G09G3/3266 ,  G06N3/08 ,  G09G2310/08 ,  G09G2320/046 ,  G09G2360/16 ,  G09G2310/0289

Abstract: The present invention relates to a display apparatus that allows a compensated data voltage to be supplied to each pixel by compensating for the data voltage so as to prevent burn-in from occurring in a display panel, a method for compensating a data signal thereof, and a method for generating a deep learning-based compensation model. To implement same, the present invention provides the display apparatus comprising a timing controller having mounted therein the compensation model generated by learning, in a deep learning method, the temperature, time, average brightness, and data voltage for each pixel. Accordingly, the present invention has an effect of preventing burn-in from occurring in each pixel by supplying each pixel with the compensated data voltage generated via the compensation model.

公开(公告)号：US20190066555A1

公开(公告)日：2019-02-28

申请号：US16052202

申请日：2018-08-01

Applicant: LG Display Co., Ltd.

Inventor： Heon GU ,  Hyojung PARK ,  Junghoon SEO

IPC: G09G3/00 ,  G09G3/3225

CPC classification number: G09G3/006 ,  G09G3/3225 ,  G09G2300/043 ,  G09G2310/027 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0271 ,  G09G2320/0285 ,  G09G2320/045 ,  G09G2360/145 ,  G09G2360/16

Abstract: A luminance compensation system of a display device and a luminance compensation method thereof are disclosed. The luminance compensation system includes a display panel including a plurality of pixels, a TFT and an OLED, a luminance meter configured to measure luminance at a plurality of positions and obtain a plurality of measure values for each of the plurality of positions in a state where modeling voltage patterns are applied to the plurality of positions, a first modeling unit configured to model the plurality of measure values to derive a first luminance characteristic approximate equation, and a second modeling unit configured to obtain a luminance error between the measure value and a luminance value in accordance with the first luminance characteristic approximate equation, after calculating an offset correction parameter, and apply the offset correction parameter to the first luminance characteristic approximate equation to derive a second luminance characteristic approximate equation.