Patent ID: 6300930
Filing Date: 2001-10-09
Classification: G09G

Abstract:
A liquid crystal display driver associated with a liquid crystal display panel having a plurality of selecting lines for selectively activating pixels and a plurality of data lines for producing a piece of image on the activated pixels in each frame, comprising:a control circuit sequentially changing preliminary selecting signals from an inactive level through an active level to said inactive level in each frame; anda driving circuit connected between said control circuit and said plurality of selecting lines for selectively changing said plurality of selecting lines with driving signals sequentially changed to an active level, and includinga control signal generator defining a plurality of sub-frames respectively assigned to said plurality of selecting lines in said each frame and generating a control signal in a first phase of each of said plurality of sub-frames and a selecting signal in a second phase of said each of said plurality of sub-frames after said first phase, anda switching array connected between said control signal generator and said plurality of selecting lines and responsive to said control signal for transferring electric charge between one of said plurality of selecting lines driven in an associated one of said plurality of sub-frames and another of said plurality of selecting lines to be driven in the next sub-frame in said first phase, said switching array being further responsive to said selecting signal for adjusting said another of said plurality of selecting lines to a first predetermined potential level;a second predetermined potential level being applied to said one of said plurality of selecting lines and to said another of said plurality of selecting lines during said transferring of electric charge, said second predetermined potential level being of nonzero value.