Plasma display device and driving method thereof

A plasma display device adapted to be driven during a reset period, an address period and a sustain period, the plasma display device comprising:

• a plasma display panel comprising:
• a plurality of first electrodes including a first group of the first electrodes and a second group of the first electrodes;
• and
• a plurality of second electrodes, wherein a plurality of panel capacitors are formed by the first and second electrodes;
• a scan driver comprising a plurality of selection circuits, a first selection circuit of the selection circuits including first and second switches and a second selection circuit of the selection circuits including third and fourth switches, the scan driver being for sequentially applying a scan voltage to the first group of the first electrodes through the first switch and to a second group of the first electrodes through the third switch, and applying a non-scan voltage to the first group of the first electrodes through the second switch and to the second group of the first electrodes through the fourth switch;
• and
• a sustain driver for applying a sustain pulse alternately having a first voltage and a second voltage lower than the first voltage to the first group of the first electrodes through the first selection circuit, and applying the sustain pulse to the second group of the first electrodes through the second selection circuit,
• wherein, during the sustain period, the sustain driver is configured to:
• during a first period of the sustain period, apply the first voltage to the first group of the first electrodes and the second group of the first electrodes through the first and third switches, respectively;
• during a second period of the sustain period, apply the second voltage to the second group of the first electrodes through the third switch, the second period being shorter than the first period;
• during a period of time starting when the second voltage is initially applied to the second group of the first electrodes in the second period, apply a third voltage between the first and second voltages to the first group of the first electrodes through the second switch;
• and
• after the period of time in the second period, apply the second voltage to the first group of the first electrodes through the first switch.