US 11,854,446 B2
Display device and method for measuring luminance profile thereof
Seok Ha Hong, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Feb. 24, 2022, as Appl. No. 17/679,345.
Application 17/679,345 is a division of application No. 17/104,331, filed on Nov. 25, 2020, granted, now 11,295,644.
Claims priority of application No. 10-2020-0059987 (KR), filed on May 19, 2020.
Prior Publication US 2022/0277676 A1, Sep. 1, 2022
Int. Cl. G09G 3/00 (2006.01); G09G 3/3233 (2016.01); G09G 3/20 (2006.01)
CPC G09G 3/006 (2013.01) [G09G 3/2007 (2013.01); G09G 3/3233 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0673 (2013.01); G09G 2360/145 (2013.01); G09G 2360/16 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A display device comprising:
pixels divided into a plurality of blocks; and
a grayscale converter which converts input grayscales for the pixels into output grayscales,
wherein each of the blocks includes at least two of the pixels,
wherein the grayscale converter generates the output grayscales based on block currents and prestored block luminance profiles, and
wherein each of the block currents is calculated based on a sum of the input grayscales corresponding to each of the blocks, and
the prestored block luminance profiles include a certain block luminance profile, and the certain block luminance profile includes luminance drop amounts generated in the plurality of blocks when one block of the plurality of blocks emits light at a first luminance and remaining blocks of the plurality of blocks emit light at a second luminance lower than the first luminance and higher than a luminance of black.