Patent ID: 9489892
Filing Date: 2016-11-08
CPC Classification: G09G

Claim Text:
1. A method of gamma correction for an organic light emitting display device, the method comprising: calculating a high-power voltage to be supplied in an emission period of the organic light emitting display device based on a gray-level range of an input image data for each frame; generating a gamma correction curve for the calculated high-power voltage based on a predetermined minimum gamma correction curve and a predetermined maximum gamma correction curve; performing a gamma correction on image data based on the gamma correction curve to generate gamma-corrected image data; and displaying the gamma-corrected image data on the organic light emitting display device, wherein gamma correction values of the gamma correction curve decrease as the calculated high-power voltage increases, and the gamma correction values of the gamma correction curve increase as the calculated high-power voltage decreases, wherein the input image data includes a red color data, a green color data, and a blue color data, and the calculated high-power voltage is determined based on a greatest maximum gray-level among a maximum gray-level of the red color data, a maximum gray-level of the green color data, and a maximum gray-level of the blue color data.