Patent ID: 6559826
Filing Date: 2003-05-06
Classification: G09G

Abstract:
A method for determining a white balance point for a flat panel liquid crystal display, said display having a first light source having a first color temperature and a second light source having a second color temperature, said method comprising the steps of:a) displaying a monochromatic image on said flat panel display at a first lamp brightness setting and determining a first relative luminance value thereof; b) displaying said monochromatic image on said flat panel display at a second lamp brightness setting and determining a second relative luminance value thereof; c) calculating a current luminance ratio from said first luminance value and said second luminance; and d) comparing said current luminance ratio and a pre-determined initial luminance of said flat panel display to determine an updated calorimetric profile that accurately represents effects of luminance degradation of said first light source and said second light source.