Method of driving plasma display panel, and plasma display device

A driving method of a plasma display panel for displaying an image comprising a step of estimating a lowest estimated temperature and a highest estimated temperature of the plasma display panel based on temperature around the plasma display panel, wherein

• one field includes a plurality of subfields having:
• an initializing period for causing initializing discharge in a discharge cell, the discharge cell having a display electrode pair including a scan electrode and a sustain electrode;
• an addressing period for causing writing discharge in the discharge cell;
• and
• a sustaining period for causing sustaining discharge in the discharge cell where the writing discharge has been caused,
• the initializing period of at least one of the plurality of subfields includes:
• an all-cell initializing operation for applying initializing voltage, the initializing voltage causing initializing discharge in all discharge cells for displaying an image;
• the initializing period of at least another one of the plurality of subfields includes :
• a selection initializing operation for selectively causing initializing discharge in a discharge cell where the sustaining discharge has been caused in the last subfield, and
• the number of subfields in the one field having the initializing period including the all-cell initializing operation is controlled based on the lowest estimated temperature and the highest estimated temperature.

A plasma display device comprising:

• a plasma display panel having a plurality of discharge cells, the discharge cells having a display electrode pair including a scan electrode and a sustain electrode,
• an accumulated time measuring circuit for measuring a power-on accumulated time of the plasma display panel;
• and
• a driving circuit for driving the plasma display panel with a subfield structure, the subfield structure comprising one field including a plurality of subfields having:
• an initializing period for causing initializing discharge in a discharge cell, the discharge cell having a display electrode pair including a scan electrode and a sustain electrode;
• an addressing period for causing writing discharge in the discharge cell;
• and
• a sustaining period for causing sustaining discharge in the discharge cell where the writing discharge has been caused,
• wherein the initializing period of at least one of the plurality of subfields includes:
• an all-cell initializing operation for causing initializing discharge in all discharge cells for displaying an image in an initializing period;
• wherein the initializing period of at least another one of the plurality of subfields includes:
• a selection initializing operation for selectively causing initializing discharge in a discharge cell where the sustaining discharge has been caused in the last subfield in the initializing period, and
• wherein the driving circuit controls the number of subfields in the one field having the initializing period including the all-cell initializing operation based on the accumulated time measured by the accumulated time measuring circuit.

A plasma display device comprising:

• a plasma display panel having a plurality of discharge cells, the discharge cells having a display electrode pair including a scan electrode and a sustain electrode;
• a thermal sensor for measuring temperature around the plasma display panel;
• a driving circuit that drives the plasma display panel with a subfield structure, the subfield structure comprising one field including a plurality of subfields having:
• an initializing period for causing initializing discharge in a discharge cell, the discharge cell having a display electrode pair including a scan electrode and a sustain electrode;
• an addressing period for causing writing discharge in the discharge cell;
• and
• a sustaining period for causing sustaining discharge in the discharge cell where the writing discharge has been caused,
• wherein the initializing period of at least one of the plurality of subfields includes:
• an all-cell initializing operation for causing initializing discharge in all discharge cells for displaying an image in an initializing period;
• wherein the initializing period of at least another one of the plurality of subfields includes:
• a selection initializing operation for selectively causing initializing discharge in a discharge cell where the sustaining discharge has been caused in the last subfield in the initializing period, and
• wherein the driving circuit controls the number of subfields in the one field having the initializing period including the all-cell initializing operation based on the measured temperature by the thermal sensor.