US 12,444,372 B2
Display device and method of compensating image data
Hyunchang Kim, Seoul (KR); Subin Kim, Suwon-si (KR); and Se-Byung Chae, Seongnam-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Nov. 22, 2022, as Appl. No. 17/992,325.
Claims priority of application No. 10-2022-0027980 (KR), filed on Mar. 4, 2022.
Prior Publication US 2023/0282174 A1, Sep. 7, 2023
Int. Cl. G09G 5/10 (2006.01); G09G 3/3233 (2016.01); G09G 3/3291 (2016.01)
CPC G09G 3/3291 (2013.01) [G09G 2310/027 (2013.01); G09G 2320/0242 (2013.01); G09G 2320/0626 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A display device, comprising:
a display panel that includes pixels;
a data driver which provides data voltages corresponding to output image data to the pixels; and
a data converter which generates a compensation grayscale from reference compensation values for compensating at least one selected from a color shift and a luminance shift corresponding to a temperature based on an input temperature, an input grayscale included in input image data, and an input luminance, and converts the input image data into the output image data based on the compensation grayscale,
wherein the input luminance is a luminance corresponding to a maximum grayscale of the input image data, and
wherein the data converter includes:
a compensation offset calculator which calculates a compensation offset from first reference compensation values corresponding to reference temperatures and reference grayscales based on the input temperature and the input grayscale;
a compensation gain calculator which calculates a compensation gain from second reference compensation values corresponding to reference luminances based on the input luminance;
a compensation grayscale calculator which calculates the compensation grayscale based on the compensation offset and the compensation gain; and
a data compensator which converts the input image data into the output image data based on the compensation grayscale.