US 12,444,389 B2
Mura compensation device and mura compensation system including the same
Jong-Kwang Hwang, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Jul. 1, 2024, as Appl. No. 18/760,654.
Claims priority of application No. 10-2023-0093969 (KR), filed on Jul. 19, 2023.
Prior Publication US 2025/0029577 A1, Jan. 23, 2025
Int. Cl. G09G 5/10 (2006.01)
CPC G09G 5/10 (2013.01) [G09G 2320/0233 (2013.01); G09G 2320/0285 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A mura compensation device comprising:
a first memory which stores a grayscale compensation value of a reference pixel defined by m×n pixels included in a display panel, and a weight, wherein each of m and n is a positive integer equal to or greater than 2;
a second memory which receives the grayscale compensation value from the first memory and stores the grayscale compensation value; and
a compensator which applies the grayscale compensation value and the weight to grayscale data to generate compensated grayscale data,
wherein the compensator applies an individual weight to the weight depending on a normal state or defective states of the display panel to adjust the weight,
the weight is selectively adjusted by the individual weight, and
wherein the individual weight is a number between 0 and 1, and a value obtained by multiplying the individual weight and the weight is applied to the grayscale compensation value.