Patent ID: 8106866

Claim:
A method for establishing a gamma correction table, the method comprising: providing a liquid crystal display, a signal generator, and a color analyzer, the liquid crystal display comprising a predetermined gamma correction table; invalidating the predetermined gamma correction table of the liquid crystal display; initializing the liquid crystal display, the signal generator, and the color analyzer; measuring luminance values corresponding to 2 n reference gray scales of a single-colored image displayed by the liquid crystal display, wherein n is a natural number; obtaining a single-colored correction curve relating to luminance values and corresponding gray scales using an arithmetic interpolating method, the 2 n reference gray scales, and measured luminance values, the arithmetic interpolating method comprising defining a first point for each of the reference gray scales in a coordinate plan, and dividing each curve between two adjacent first points into a plurality of equal parts by a plurality of second points; obtaining an ideal single-colored gamma curve, and defining a plurality of points on the ideal single-colored gamma curve, each point being corresponding to a gray scale to be corrected, and the sum of the plurality of points are smaller than the sum of the first and second points; selecting a gray scale corresponding to one of the points on the ideal single-colored gamma curve to be corrected, looking for a corresponding point from the first and second points on the single colored correction curve which has a luminance value closest to the luminance value corresponding to the gray scale to be corrected, and then storing the gray scale corresponding to the corresponding point, whereby the selected gray scale is corrected as the gray scale corresponding to the corresponding point; correcting the gray scales corresponding to other points on the ideal single-colored gamma curve as the selected gray scale, and storing corrected gray scales; establishing a single-color gamma correction table for the single color; and establishing a gamma correction table based on the single-color gamma correction table.