Patent ID: 6980190
Filing Date: 2005-12-27
Classification: G09G

Abstract:
1. A method of driving a liquid crystal display device, said liquid crystal display device including a liquid crystal layer, a plurality of pixels arranged in a matrix configuration, each of said plurality of pixels being provided with a pixel electrode for generating an electric field in said liquid crystal layer between said pixel electrode and a common electrode associated with said plurality of pixels in common, a plurality of video signal lines coupled to said plurality of pixels, a plurality of scanning lines arranged to intersect said plurality of video signal lines and coupled to said plurality of pixels, and a driver circuit for outputting a charging voltage during a charging period at a beginning of a horizontal scanning period and continuously outputting a gray scale voltage corresponding to a display data to said plurality of video signal lines during a remaining portion of said horizontal scanning period, said method comprising: applying a common voltage to said common electrode; applying a same polarity of gray scale voltages to said video signal lines corresponding to successive N horizontal scanning periods, where N≧2; inverting a polarity of said gray scale voltage with respect to a common voltage on said common electrode successive N horizontal scanning periods, where N≧2; and making a first charging period of said charging voltage corresponding to a first line of N lines of said plurality of scanning lines scanned immediately after inversion of said polarity of said gray scale voltage different from a second charging period of said charging voltage corresponding to a second line of said N lines scanned immediately succeeding said first line.