Lg Display Co., Ltd.

Taeyong Park

Woongjin Seo

Jaehong Kim

Junwoo Jang

Moojong Lim

Taeuk Kim

Gihong Kim

Seonmee Lee

A gamma compensation method and a display device using the same are disclosed. The gamma compensation method includes: sensing a level of external illuminance; determining whether the sensed level of external illuminance is equal to or lower than a predetermined illuminance, wherein when the sensed level is equal to or lower than the predetermined illuminance, the luminance of the display device is reduced to an optimum luminance; and modulating gray levels of input data of the display device based on a first gamma curve when the sensed level of external illuminance is equal to or lower than the predetermined illuminance, and modulating based on a second gamma curve when the sensed level of external illuminance is greater than the predetermined illuminance, wherein the first gamma curve includes a concave curve set in a low gray level area and a convex curve set in a high gray level area, and the concave curve and the convex curve are connected via an inflection point.

Gamma compensation method and display device using the same

A method of correcting a preferred color is disclosed. The method includes converting an input image including multi-primary color data of three or more primary colors into an XYZ color space, converting the XYZ color space into data of an LCH color space, expanding a color gamut of the data in the LCH color space to detect a preferred color region of the color gamut expansion data, correcting data of the preferred color region using parameters independent of the input image, inversely converting the corrected data of the preferred color region of the color gamut expansion data into an XYZ color space, dividing the XYZ color space into multi-primary color data of four or more primary colors, and displaying the multi-primary color data on a display device.

Method of correcting preferred color and display device using the same

Growing community of inventors

Paju-si, South Korea

Taeyong Park