Patent ID: 6304241
Filing Date: 2001-10-16
Classification: G09G

Abstract:
A driver for a display panel, comprising:a plurality of pairs of first and second D/A converters, each of the first and second D/A converters having an output terminal, wherein each of the first D/A converters receives a picture signal and outputs a positive-polarity voltage, and each of the second D/A converters receives the picture signal and outputs a negative-polarity voltage;a plurality of pairs of first and second polarity changeover switches, wherein each of the first polarity changeover switches is connected to the output terminals of the first and second D/A converters and alternately outputs the positive-polarity voltage and negative-polarity voltage in response to a polarity changeover signal, and each of the second polarity changeover switches is connected to the output terminals of the first and second D/A converters and alternately outputs a reverse polarity voltage in contrast with the first polarity changeover switch in response to the polarity changeover signal; anda plurality of switching elements, wherein each of the plurality of switching elements is respectively connected between a first node, located between the output terminal of the first D/A converter and the first polarity changeover switch, and a second node located between the output terminal of the second D/A converter and the second polarity changeover switch, and wherein each of the switching elements is actuated until the voltages at the first and second nodes become substantially equal.