Plasma display device and driving method of plasma display panel

A driving method of a plasma display panel that drives the plasma display panel including a plurality of discharge cells at intersections of respective pluralities of scan electrodes and sustain electrodes and a plurality of data electrodes by a sub-field method in which one field period includes a plurality of sub-fields, comprising the steps of:

• applying a first ramp waveform rising from a first potential to a second potential to said plurality of scan electrodes in a first period within a setup period of at least one sub-field of said plurality of sub-fields;
• applying a second ramp waveform dropping from a third potential to a fourth potential to said plurality of scan electrodes in a second period following said first period;
• applying a third ramp waveform rising from a fifth potential to a sixth potential to said plurality of sustain electrodes in a third period, which is shorter than said first period, within said first period;
• and
• applying a fourth ramp waveform dropping from a seventh potential to an eighth potential to said plurality of sustain electrodes in a fourth period, which is shorter than said second period, within said second period.

A plasma display device comprising:

• a plasma display panel including a plurality of discharge cells at intersections of respective pluralities of scan electrodes and sustain electrodes and a plurality of data electrodes;
• and
• a driving device that drives said plasma display panel by a sub-field method in which one field period includes a plurality of sub-fields, wherein
• said driving device includes
• a scan electrode driving circuit that drives said plurality of scan electrodes, and
• a sustain electrode driving circuit that drives said plurality of sustain electrodes,
• said scan electrode driving circuit applies a first ramp waveform that rises to said plurality of scan electrodes in a first half period within a setup period of at least one sub-field of said plurality of sub-fields, and applies a second ramp waveform that drops to said plurality of scan electrodes in a second half period following said first half period, and
• said sustain electrode driving circuit applies a third ramp waveform that rises to said plurality of sustain electrodes in said first half period, and applies a fourth ramp waveform that drops to said plurality of sustain electrodes in said second half period.

A driving method of a plasma display panel that drives the plasma display panel including a plurality of discharge cells at intersections of respective pluralities of scan electrodes and sustain electrodes and a plurality of data electrodes by a sub-field method in which one field period includes a plurality of sub-fields, comprising the steps of:

• applying a first ramp waveform that rises to said plurality of scan electrodes in a first half period within a setup period of at least one sub-field of said plurality of sub-fields;
• applying a second ramp waveform that drops to said plurality of scan electrodes in a second half period following said first half period;
• applying a third ramp waveform that rises to said plurality of sustain electrodes in said first half period;
• and
• applying a fourth ramp waveform that drops to said plurality of sustain electrodes in said second half period.