US 12,293,692 B2
Gamma correction apparatus for display device and gamma correction method therefor
Junho Hwang, Yongin-si (KR); Yoongyu Lee, Yongin-si (KR); and Sunjoon Hwang, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Jan. 6, 2024, as Appl. No. 18/406,102.
Claims priority of application No. 10-2023-0039092 (KR), filed on Mar. 24, 2023; and application No. 10-2023-0094661 (KR), filed on Jul. 20, 2023.
Prior Publication US 2024/0321165 A1, Sep. 26, 2024
Int. Cl. G09G 3/20 (2006.01); G09G 3/3225 (2016.01)
CPC G09G 3/2007 (2013.01) [G09G 3/3225 (2013.01); G09G 2320/0285 (2013.01); G09G 2320/0626 (2013.01); G09G 2320/0666 (2013.01); G09G 2320/0673 (2013.01); G09G 2320/0693 (2013.01); G09G 2360/16 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A gamma correction apparatus for a display device, the gamma correction apparatus comprising:
a measurer configured to measure an optical characteristic of a display panel; and
a gamma data generator configured to
generate measurement gamma data for at least one measurement gray level pre-determined from among a plurality of gray levels, based on the optical characteristic received from the measurer,
generate prediction gamma data for at least one prediction gray level other than the at least one measurement gray level from among the plurality of gray levels by using an equation defining a relationship between a gray level and an optical characteristic, and
generate gray level-wise gamma data, based on the measurement gamma data and the prediction gamma data,
wherein the optical characteristic comprises a luminance value and color coordinates, and
the measurement gamma data and the prediction gamma data are each RGB data comprising information about the luminance value and the color coordinates.