Method for driving plasma display panel and plasma display device

A plasma display apparatus comprising:

• a plasma display panel having a plurality of discharge cells, each of the discharge cells having a scan electrode, a sustain electrode, and a data electrode;
• and
• a driver circuit for driving the plasma display panel and displaying an image on the plasma display panel,
• wherein the driver circuit drives the plasma display panel in a manner such that
• one field is formed of a plurality of subfields, each of the subfields having an address period, a sustain period, and an erasing period,
• in the address period, a scan pulse is applied to the scan electrodes, and an address pulse is applied to the data electrodes so as to selectively cause an address discharge in the discharge cells,
• in the sustain period, sustain pulses corresponding in number to a luminance weight are applied alternately to the scan electrodes and the sustain electrodes so as to cause a sustain discharge in the discharge cells having undergone the address discharge, and
• in the erasing period, a predetermined voltage is applied to the scan electrodes and the sustain electrodes so as to selectively cause an erasing discharge only in the discharge cells having undergone the address discharge in the immediately preceding address period,
• a voltage obtained by subtracting a voltage applied to the data electrode from a low-side voltage of the sustain pulses applied to the scan electrode in the sustain period is defined as a first voltage,
• a voltage obtained by subtracting the voltage applied to the data electrode from a high-side voltage of the sustain pulses applied to the scan electrode in the sustain period is defined as a second voltage, and
• a voltage obtained by subtracting a low-side voltage of the address pulse applied to the data electrode from a low-side voltage of the scan pulse applied to the scan electrode in the address period is defined as a third voltage,
• based on the above definitions, a voltage applied to each electrode is set so as to satisfy conditions that
• a voltage obtained by subtracting the third voltage from the first voltage is equal to or higher than a discharge start voltage of a discharge occurring between the data electrode as an anode and the scan electrode as a cathode, and
• a voltage obtained by subtracting the third voltage from the second voltage is equal to or lower than a sum of the discharge start voltage of the discharge occurring between the data electrode as an anode and the scan electrode as a cathode and a discharge start voltage of a discharge occurring between the data electrode as a cathode and the scan electrode as an anode, and
• the one field has a first subfield and a second subfield, and when the scan pulse is applied to each of the plurality of scan electrodes in the address period, the scan pulse is applied sequentially from one to an other one of the scan electrodes in the first subfield, and is applied sequentially from the other one to the one of the scan electrodes in the second subfield.