Patent ID: 7944409

Claim:
A plasma display apparatus, comprising: a plasma display panel comprising a plurality of scan electrodes, sustain electrodes, and address electrodes formed on substrates to form discharge cells, wherein the scan electrodes are divided into a first scan electrode group and a second scan electrode group; and electrode driving parts configured to apply a first scan bias voltage and a second scan bias voltage to the second scan electrode group during an address period, the electrode driving parts configured to apply a constant third scan bias voltage to the first scan electrode group during the address period, the electrode driving parts configured to maintain a constant voltage at the sustain electrodes during an entirety of the address period, wherein a magnitude of the first scan bias voltage applied during a first period of the address period is different from a magnitude of the second scan bias voltage applied during a second period of the address period following the first period, wherein the first scan electrode group is scanned prior to the second scan electrode group, and wherein a lowest voltage of a scan pulse applied during the address period is lower than a lowest voltage of sustain pulses applied during a sustain period.