Method of driving plasma display panel and plasma display apparatus thereof

A method of driving a plasma display panel comprising a plurality of scan electrodes and sustain electrodes formed on an upper substrate and a plurality of address electrodes formed on a lower substrate, the method comprising the step of:

• dividing the plurality of scan electrodes into first and second groups,
• wherein an address period includes first and second group scan periods in which scan signals are supplied to the first and second groups,
• in the first group scan period, a scan bias voltage supplied to the second group is higher than a scan bias voltage supplied to the first group supplied,
• in at least one of a plurality of subfields constituting one frame, a width of a first sustain signal of a plurality of sustain signals supplied during a sustain period is larger than a width of second, third, and fourth sustain signals of the plurality of sustain signals, and
• the first and third sustain signals being supplied to the scan electrodes, and the second and fourth sustain signals being supplied to the sustain electrodes, wherein the width of the third sustain signal of the plurality of sustain signals is larger than the width of the fourth sustain signal of the plurality of sustain signals.