Method of driving plasma display panel and plasma display apparatus employing the same

A plasma display apparatus comprising:

• a plasma display panel including a plurality of scan electrodes and sustain electrodes formed on an upper substrate, and a plurality of address electrodes formed on a lower substrate;
• and
• a driver for supplying driving signals to the plurality of electrodes:
• wherein the plurality of scan electrodes are divided into first and second groups and then supplied with scan signal, and in at least one period of an address period, first and second scan bias voltages supplied to the first and second groups, respectively, are different from each other,
• when the second scan bias voltage supplied in a first subfield of first and second subfields is higher than that supplied in the second subfield of the first and second subfields, a lowest voltage of a reset signal supplied to the second group is higher in the second subfield of the first and second subfields than in the first subfield of the first and second subfields during a reset period,
• wherein in at least one of the first and second subfields, the second scan bias voltage supplied to first and second scan electrodes of a plurality of scan electrodes belonging to the second group are different from each other,
• the second scan bias voltage supplied to the first scan electrode of the first and second scan electrodes is higher than that supplied to the second scan electrode of the first and second scan electrodes, and
• the lowest voltage of the reset signal is higher in the second scan electrode of the first and second scan electrodes than in the first scan electrode of the first and second scan electrodes.