Plasma display and driving method thereof

A method for driving a plasma display device having a plurality of first electrodes extending in one direction, the method comprising:

• during a first period, turning on a transistor coupled between a first power source that supplies a first voltage and the plurality of first electrodes, and applying the first voltage to the plurality of first electrodes;
• during a sustain period, alternately applying a second voltage that is greater than the first voltage and a third voltage that is less than the second voltage;
• during the sustain period, charging a capacitor with the first voltage while applying the second voltage to the plurality of first electrodes, the capacitor coupled between the first power source and a second power source that supplies a fourth voltage that is less than the first voltage;
• and
• discharging the first voltage charged in the capacitor to a voltage less than the first voltage during at least a partial period of a period extending from after the sustain period to before the first period.

A plasma display device having a plurality of first electrodes and a plurality of second electrodes that perform a display operation together with the plurality of first electrodes, the plasma display device comprising:

• a sustain driver coupled to the plurality of first electrodes, and alternately applying a first voltage and a second voltage to the plurality of first electrodes, the second voltage being greater than the first voltage;
• a first transistor coupled between a first power source that supplies a third voltage that is less than the first voltage and the plurality of first electrodes;
• and
• a capacitor coupled between the first power source and a second power source that supplies a fourth voltage that is less than the third voltage and charged with the first voltage when the first voltage is applied to the plurality of first electrodes during the sustain period,
• wherein the capacitor is discharged to be less than the third voltage during a partial period of a period from after the sustain period to before the first transistor is turned on.