Patent ID: 7656367

Claim:
A driving method of a plasma display device that divides one frame into a plurality of subfields, the plasma display device having a plurality of first electrodes and a plurality of second electrodes, the plurality of second electrodes being grouped into a plurality of groups including a first group and a second group, the driving method comprising, in at least one subfield including a plurality of address periods and a plurality of sustain periods respectively corresponding to the plurality of groups: selecting turn-on cells from discharge cells corresponding to the first group and the second group during the plurality of address periods; generating a sustain discharge in discharge cells corresponding to the plurality of groups including the first group by alternately applying a second voltage and a third voltage to the plurality of second electrodes while the plurality of first electrodes are biased at a first voltage, during a first sustain period among the plurality of sustain periods, where the first sustain period is provided between the address periods of the first group and the address period of the second group, wherein the second voltage and third voltage are respectively higher and lower than the first voltage; and generating a sustain discharge in cells of a plurality of groups including at least the first group and the second group by alternately applying a fourth voltage and a fifth voltage to the plurality of second electrodes while the plurality of first electrodes are biased at the first voltage, during a second sustain period provided after the address period of the second group, wherein the fourth voltage and the fifth voltage are respectively higher and lower than the first voltage.