Patent ID: 8350784

Claim:
A plasma display device comprising: a plasma display panel, the plasma display panel being driven by a subfield method in which a plurality of subfields is set in one field for gradation display, and each of the subfields has an initializing period, an address period, and a sustain period, the plasma display panel having a plurality of scan electrodes; and a scan electrode driving circuit for generating a first falling down-ramp voltage in the initializing period, generating a sustain pulse in the sustain period, generating a rising up-ramp voltage at an end of the sustain period, and applying the voltages to the scan electrodes, wherein, after generating the sustain pulse in the sustain period, the scan electrode driving circuit generates a second down-ramp voltage that has a portion falling with a gradient gentler than that of the first down-ramp voltage, and after generating the second down-ramp voltage, the scan electrode driving circuit generates the up-ramp voltage, and applies the voltages to the scan electrodes.