Patent ID: 7619586

Claim:
A plasma display apparatus, comprising: a plasma display panel having a first electrode and a second electrode; a scan driving unit for applying a sustain pulse to the first electrode, the first sustain pulse rising from a first bias voltage having a negative polarity up to a first sustain voltage; and a sustain driving unit for applying a second sustain pulse to the second electrode in an alternate manner with the sustain pulse applied by the scan driving unit from a second bias voltage having a negative polarity up to a second sustain voltage, wherein the first bias voltage having a negative polarity is applied to the first electrode during an address period, and the second bias voltage having a negative polarity is applied to the second electrode during the address period when the scan driving unit applies a scan pulse to the first electrode, wherein the first bias voltage having a negative polarity and the second bias voltage having a negative polarity have the same value.