公开(公告)号：US20240320784A1

公开(公告)日：2024-09-26

申请号：US18732218

申请日：2024-06-03

Applicant: LG Display Co., Ltd.

Inventor： Min-Gyu Choi ,  Se-Jin Lee ,  Dong-Hyeok Kim

IPC: G06T3/20 ,  G06T3/40 ,  G06T5/92

CPC classification number: G06T3/20 ,  G06T3/40 ,  G06T5/92 ,  G06T2210/22

Abstract: A method of compensating a display device includes: displaying a first display image of a calibration pattern; generating a first photograph image of the calibration pattern by capturing the first display image; generating a measurement representative position data corresponding to the calibration pattern by measuring the first photograph image; generating a third-order fitting representative position data by performing a two-dimensional third-order fitting; displaying a second display image of a full white display; generating a second photograph image of the full white display by capturing the second display image; generating a first crop image by performing a size adjustment based on the third-order fitting representative position data; calculating a luminance compensation value by comparing a measured luminance of the first crop image with a target luminance; and generating a compensated image data by applying the luminance compensation value to an image data.

公开(公告)号：US20230186426A1

公开(公告)日：2023-06-15

申请号：US17985523

申请日：2022-11-11

Applicant: LG Display Co., Ltd.

Inventor： Min-Gyu Choi ,  Se-Jin Lee ,  Dong-Hyeok Kim

IPC: G06T3/20 ,  G06T3/40 ,  G06T5/00

CPC classification number: G06T3/20 ,  G06T3/40 ,  G06T5/009 ,  G06T2210/22

Abstract: A method of compensating a display device includes: displaying a first display image of a calibration pattern; generating a first photograph image of the calibration pattern by capturing the first display image; generating a measurement representative position data corresponding to the calibration pattern by measuring the first photograph image; generating a third-order fitting representative position data by performing a two-dimensional third-order fitting; displaying a second display image of a full white display; generating a second photograph image of the full white display by capturing the second display image; generating a first crop image by performing a size adjustment based on the third-order fitting representative position data; calculating a luminance compensation value by comparing a measured luminance of the first crop image with a target luminance; and generating a compensated image data by applying the luminance compensation value to an image data.

公开(公告)号：US12039691B2

公开(公告)日：2024-07-16

申请号：US17985523

申请日：2022-11-11

Applicant: LG Display Co., Ltd.

Inventor： Min-Gyu Choi ,  Se-Jin Lee ,  Dong-Hyeok Kim

IPC: G06T3/20 ,  G06T3/40 ,  G06T5/92

CPC classification number: G06T3/20 ,  G06T3/40 ,  G06T5/92 ,  G06T2210/22

Abstract: A method of compensating a display device includes: displaying a first display image of a calibration pattern; generating a first photograph image of the calibration pattern by capturing the first display image; generating a measurement representative position data corresponding to the calibration pattern by measuring the first photograph image; generating a third-order fitting representative position data by performing a two-dimensional third-order fitting; displaying a second display image of a full white display; generating a second photograph image of the full white display by capturing the second display image; generating a first crop image by performing a size adjustment based on the third-order fitting representative position data; calculating a luminance compensation value by comparing a measured luminance of the first crop image with a target luminance; and generating a compensated image data by applying the luminance compensation value to an image data.

公开(公告)号：US11112645B2

公开(公告)日：2021-09-07

申请号：US16196868

申请日：2018-11-20

Applicant: LG DISPLAY CO., LTD

Inventor： Dae-Hoon Ko ,  Dong-Hyeok Kim

IPC: G02F1/13357 ,  G02F1/1335 ,  G02F1/1334 ,  F21V8/00

Abstract: A liquid crystal display device includes a liquid crystal panel, an optical sheet positioned below the liquid crystal panel, a light guide plate positioned below the optical sheet, a selective light-blocking panel positioned below the light guide plate, a reflector positioned below the selective light-blocking panel, and a light emitting diode (LED) assembly positioned on a side of the light guide plate, wherein the selective light-blocking panel is sectioned into a plurality of blocks, and transmits, or diffuses and reflects light emitted to a back surface of the light guide plate for each of blocks.