US 11,810,495 B2
Display driver IC including dithering circuit capable of adaptively changing threshold grayscale value depending on display brightness value, device including the same, and method thereof
Byoungyoon Jang, Gimhae-si (KR); Yong Hoon Yu, Suwon-si (KR); Se Whan Na, Seoul (KR); Jong-Hee Na, Hwaseong-si (KR); and Hyeonsu Park, Seoul (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Oct. 5, 2022, as Appl. No. 17/960,435.
Claims priority of application No. 10-2022-0020896 (KR), filed on Feb. 17, 2022.
Prior Publication US 2023/0260445 A1, Aug. 17, 2023
Int. Cl. G09G 3/20 (2006.01)
CPC G09G 3/2044 (2013.01) [G09G 2320/0233 (2013.01); G09G 2320/0626 (2013.01); G09G 2360/145 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display driver integrated circuit (IC), comprising:
a data line driver configured to drive a first data line connected with a first pixel of a display in response to output image data; and
a dithering circuit configured to receive a brightness value of the display, to calculate a first reference grayscale value corresponding to the brightness value using a first group of threshold grayscale values, to receive input image data with a first grayscale value, which corresponds to the first pixel, to compare the first grayscale value and the first reference grayscale value, and to generate the output image data having not the first grayscale value but an output grayscale value when the first grayscale value is smaller than the first reference grayscale value.