Patent ID: 6061046
Filing Date: 2000-05-09
Classification: G09G

Abstract:
An LCD panel driving circuit, comprising:a timing control circuit determining an output timing of a digital video signal and vertical/horizontal synchronizing signals and outputting the digital video signal and a row line driving signal;a D/A converter circuit coupled to the timing control circuit and receiving the digital video signal from the timing control circuit and outputting analog video signals to be sequentially applied to groups of column driver lines;a gamma correction circuit coupled to the D/A converter circuit and applying a correction signal to the D/A converter circuit;a sequence control circuit receiving the horizontal synchronizing signal and sequentially outputting a column driver enable signal, the sequence control circuit having a plurality of counters and a plurality of logic units, at least one of the logic units outputting a logic value ""1"" or ""0"" based upon an output from at least one of the counters;a column driver coupled to the sequence control circuit and the D/A converter circuit for sequentially receiving the analog video signals from the D/A converter circuit and subsequently outputting the analog video signals to different groups of column driver lines cell of a LCD panel; anda row driver receiving the row line driving signal from the timing control circuit and sequentially outputting the row line driving signal to each row line of the LCD panel.