US 12,437,711 B2
Luminance uniformity compensating system and method
Sung Ho An, Paju-si (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Jun. 10, 2024, as Appl. No. 18/738,505.
Claims priority of application No. 10-2023-0148890 (KR), filed on Nov. 1, 2023.
Prior Publication US 2025/0140165 A1, May 1, 2025
Int. Cl. G09G 3/32 (2016.01); G06T 7/00 (2017.01); G09G 3/20 (2006.01)
CPC G09G 3/32 (2013.01) [G06T 7/0004 (2013.01); G09G 3/2096 (2013.01); G06T 2207/30121 (2013.01); G09G 2320/0233 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A luminance uniformity compensation system, comprising:
a display device having a display panel;
a camera configured to generate picture data by capturing the display panel and extracting luminance data of the display panel from the picture data; and
a uniformity compensation device configured to generate block compensation data of a unit block and priority pixel compensation data of a priority pixel of the unit block from the luminance data of the display panel and transmitting the block compensation data and the priority pixel compensation data to the display device,
wherein the unit block includes a block of pixels defined within the display panel,
wherein the priority pixel includes a pixel having one of a dark spot or a bright spot, and
wherein the uniformity compensation device is configured to perform:
extracting luminance data of each unit profile of a plurality of unit profiles from the luminance data of the display panel, wherein the unit block is comprised of the plurality of unit profiles, wherein each unit profile is smaller than the unit block, and wherein the unit block includes M×N pixels, and M and N are natural numbers larger than or equal to 2;
generating deviation data of each unit profile by comparing luminance data between the unit profiles of the plurality of unit profiles; and
generating the priority pixel compensation data from the deviation data of the unit profiles.