Patent ID: 7714881

Claim:
A method for reducing the visual impact of defects present in a matrix display comprising a plurality of pixels, said pixels comprising at least three sub-pixels, each sub-pixel intended for generating a sub-pixel color other than a color that can be obtained by a linear combination of the sub-pixel colors of the other sub-pixels of the pixel, the method comprising: providing a mathematical representation of a human vision system by calculating an expected response of a human eye to a stimulus applied to a sub-pixel, characterizing, by using a vision measurement system, at least one defect sub-pixel present in the display, the at least one sub-pixel intended for generating a first sub-pixel color, the defect sub-pixel being surrounded by a plurality of non-defective sub-pixels, deriving drive signals for at least some of the plurality of non-defective sub-pixels in accordance with the representation of the human vision system and the characterizing of the at least one defect sub-pixel, to thereby minimize an expected response of the human vision system to the defect sub-pixel, and driving at least some of the plurality of non-defective sub-pixels with the derived drive signals, wherein minimizing the response of the human vision system to the defect sub-pixel comprises changing the light output value of at least one non-defective sub-pixel intended for generating another sub-pixel color, said another sub-pixel color differing from said first sub-pixel color.