Patent ID: 8159487

Claim:
A plasma display device comprising: a plasma display panel including a scan electrode, a sustain electrode and a data electrode; a scan pulse generating circuit for generating a scanning pulse; and a scan electrode drive circuit for generating a drive waveform to be applied to the scan electrode, the scan electrode drive circuit including: a sustain pulse generating circuit for generating a sustain pulse to be applied to the scan electrode; a first waveform generating circuit for reducing a voltage to be applied to the scan electrode in an initializing period; and a second waveform generating circuit for increasing a voltage to be applied to the scan electrode in the initializing period; wherein the sustain pulse generating circuit includes: a first clamping switch for clamping an output to a voltage at a high voltage side of a sustain power supply for generating the sustain pulse; a first separation switch connected in series to the first clamping switch; a second clamping switch for clamping an output to a voltage at a low voltage side of the sustain power supply; and a second separation switch connected in series to the second clamping switch; wherein the output of the first waveform generating circuit is connected to a node to which the sustain pulse is output from the sustain pulse generating circuit, and an output of the second waveform generating circuit is connected to a node between the second clamping switch and the second separation switch, and the scan pulse generating circuit and the first clamping switch were connected through the first separation switch, and the scan pulse generating circuit and the second clamping switch were connected through the second separation switch.