Method of driving a plasma display panel

A method of driving a plasma display panel having display electrodes, address electrodes crossing the display electrodes, and discharge cells in areas where the display electrodes cross the address electrodes, the discharge cells being divided into a plurality of discharge cell groups in a direction of the address electrodes to drive the plasma display panel by the groups, the method comprising:

• dividing a unit frame used to express an image into a plurality of subfields;
• and
• dividing each subfield into
• a mixing drive period including
• group address periods in which a discharge cell is selected to be turned on from the discharge cell groups, and
• group sustain periods in which a certain number of sustain discharges is performed between the group address periods, sustain discharges being performed by applying a sustain pulse alternating between a first voltage and a second voltage;
• and
• a correction sustain period in which the number of sustain discharges is corrected by the discharge cell groups so as to perform a sustain discharge in accordance with a gray-level weight allocated to each of the subfields throughout the subfields, the correction sustain period including
• a common sustain period in which the same number of the sustain discharge is performed in each of the discharge cell groups, and
• a selection sustain period in which the sustain discharge is selectively performed in each of the discharge cell groups.