US 11,657,780 B2
Display device and driving method thereof
Ki Hyun Pyun, Yongin-si (KR); Jang Mi Lee, Yongin-si (KR); and Eun Jin Choi, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-do (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Jun. 11, 2021, as Appl. No. 17/345,432.
Claims priority of application No. 10-2020-0134593 (KR), filed on Oct. 16, 2020.
Prior Publication US 2022/0122563 A1, Apr. 21, 2022
Int. Cl. G09G 5/10 (2006.01); G09G 3/20 (2006.01)
CPC G09G 5/10 (2013.01) [G09G 3/20 (2013.01); G09G 2320/0271 (2013.01); G09G 2320/0646 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a pixel part including a plurality of pixels, wherein the pixel part is partitioned into a plurality of blocks;
a scale factor provider which calculates a first load value of input image data corresponding to all of the blocks of the pixel part, calculates a second load value of the input image data for each of the blocks, and generates a scale factor based on the first load value and the second load value; and
a timing controller which generates image data by scaling gray values of the input image data based on the scale factor,
wherein the scale factor provider
generates a first scale factor for commonly controlling the gray values of the input image data corresponding to the blocks as the scale factor based on the first load value, when the first load value is greater than or equal to a reference load value; and
generates a second scale factor for controlling the gray values of the input image data for each block as the scale factor based on the first load value and the second load value, when the first load value is less than the reference load value.