Patent ID: 7683868
Filing Date: 2010-03-23
Classification: G09G

Abstract:
1. In a liquid crystal display device having a number of pixels, a method for reducing a response time of the pixels corresponding to a period of time required for a selected pixel at a starting pixel value (s) to reach a target pixel value (p) by applying only an overdrive pixel value, comprising: determining an overdrive pixel value based upon an extended overdrive function that dynamically provides the overdrive pixel value and which includes an extended LCD saturation region sub-function and an LCD unsaturated region sub-function, wherein G s (p) provides the overdrive pixel value, wherein in(s) is the minimum pixel value reachable in one frame time starting at s and M(s) is the maximum pixel value reachable in one frame time starting at s, wherein f s is the one-frame pixel-response function corresponding to a fixed start-pixel s, wherein the extended LCD saturation region sub-function includes the functions G s (p)=p−m(s) and G s (p)=255+(p−M(s)) over the ranges p<m(s) and p>M(s), respectively; and applying only the overdrive pixel value to the pixel in order to reach the target pixel value (p), thereby reducing the pixel response time.