公开(公告)号：US20210090527A1

公开(公告)日：2021-03-25

申请号：US16855953

申请日：2020-04-22

Applicant: Samsung Display Co., Ltd.

Inventor： Jeong Woon LEE ,  Min Gyu KIM ,  Sang Cheol PARK ,  Hoi Sik MOON

IPC: G09G5/393 ,  G09G3/20

Abstract: A controller includes a bit shifter and a stain compensator. The bit shifter may determine a bit shift value corresponding to a stain compensation value according to an area of a display panel. The bit shift value represents a quantity of integer bits and a quantity of decimal bits. At least one of the quantity of integer bits and the quantity of decimal bits corresponds to a quantity of stain compensation steps. The stain compensator may compensate a grayscale value of input image data using the stain compensation value and the bit shift value to generate compensated image data.