Patent ID: 7592973
Filing Date: 2009-09-22
Classification: G09G

Abstract:
1. An apparatus for driving a plasma display panel by dividing at least one subfield into a reset period, an address period and a sustain period, comprising: an initialization driving circuit for generating a ramp waveform whose voltage varies and that includes a maintenance period of the reset period where a specific voltage is maintained for a predetermined time period between first and second periods of the reset period, and changing a voltage supplied to a sustain electrode during the maintenance period of the reset period, wherein the initialization driving circuit supplies a first ramp-up waveform whose voltage increases to the scan electrode during the first period of the reset period, supplies the specific voltage to the scan electrode and at a same time supplies a second ramp-up waveform whose voltage increases to the sustain electrode during the maintenance period of the reset period, and supplies a first ramp-down waveform and a second ramp-down waveform whose voltages decrease to the scan electrode and the sustain electrode, respectively, during the second period of the reset period.