Patent ID: 6304038
Filing Date: 2001-10-16
Classification: G09G

Abstract:
A driving apparatus of a display panel having a plurality of row electrodes and a plurality of column electrodes arranged so as to cross said row electrodes, in which pixel data pulses corresponding to a video signal are applied to each of said column electrodes of said display panel, comprising:a power supply circuit which comprises a capacitor, a first switching current path for selectively discharging charges stored in said capacitor and supplying them to a power line, a second switching current path for selectively applying a power potential to said power line, a third switching current path for selectively charging the charges stored on said column electrodes into said capacitor via said power line, and a fourth switching current path for selectively connecting said power line to the ground only for a short predetermined period of time; anda pixel data pulse generating circuit for applying said pixel data pulses to said column electrodes by connecting said power line with said column electrodes only for a predetermined period of time in response to said video signal.