US 12,462,738 B2
Display device and method of driving display device
Do Won Kim, Yongin-si (KR); and Min Weun Kim, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Aug. 20, 2024, as Appl. No. 18/810,111.
Prior Publication US 2025/0174175 A1, May 29, 2025
Int. Cl. G09G 3/32 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 2320/0233 (2013.01); G09G 2320/0271 (2013.01); G09G 2330/028 (2013.01); G09G 2360/16 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel comprising a pixel;
a gamma voltage generator configured to generate gamma voltages; and
a driver configured to:
convert a grayscale value of image data into a voltage value, using a gamma lookup table corresponding to an input luminance value, wherein:
the gamma lookup table comprises voltage values for a set of grayscale values among all grayscale values, and
in association with converting the grayscale value into the voltage value, the driver is configured to calculate voltage values for all the grayscale values by nonlinearly interpolating the voltage values for the set of grayscale values, and
provide the display panel with a data voltage corresponding to a gamma voltage among the gamma voltages, wherein the data voltage corresponds to the voltage value,
wherein the driver is further configured to:
select a first gamma lookup table and a second gamma lookup table from among predetermined gamma lookup tables corresponding to representative luminance values, based on the input luminance value;
calculate a third gamma lookup table for the input luminance value by linearly interpolating the first gamma lookup table and the second gamma lookup table; and
generate the gamma lookup table based on the third gamma lookup table, wherein generating the gamma lookup table comprises applying or refraining from applying an offset corresponding to the input luminance value to the third gamma lookup table.