Plasma display device and method for driving the same

A method for driving a plasma display device having a plurality of row electrodes, a plurality of column electrodes intersecting the row electrodes, and a plurality of cells respectively defined by the row electrodes and column electrodes, one field being divided into a plurality of sub-fields having respective weights, comprising:

• selecting cells to be lit from cells corresponding to row electrodes of a first group among the plurality of row electrodes in at least one first sub-field of a first frame, and lighting the selected cells for a period corresponding to the weight of the first sub-field;
• selecting cells to be lit from the cells corresponding to the plurality of row electrodes in at least one second sub-field of the first frame, and lighting the selected cells for a period corresponding to the weight of the second sub-field;
• selecting cells to be lit from cells corresponding to row electrodes of a second group among the plurality of row electrodes in the first sub-field of a second frame, and lighting the selected cells for a period corresponding to the weight of the first sub-field;
• and
• selecting cells to be lit from the cells corresponding to the plurality of row electrodes in at least one second sub-field of the second frame, and lighting the selected cells for a period corresponding to the weight of the second sub-field.

A plasma display device comprising:

• a display panel having a plurality of row electrodes, a plurality of column electrodes intersecting the row electrodes, and a plurality of cells respectively defined by the row electrodes and column electrodes;
• a controller adapted to divide one frame into a plurality of sub-fields having respective weights, to generate control signals for controlling driving of the row electrodes and column electrodes from video data, to calculate a display load ratio from the video data, and to determine the number of sustain discharge pulses allocated to each of the sub-fields in response to the display load ratio;
• and
• a driver adapted to selectively apply a scan pulse to the plurality of row electrodes in each sub-field, and to apply an address pulse to column electrodes corresponding to cells to be lit among cells corresponding to the row electrodes to which the scan pulse is applied, to address the lit cells,
• wherein the controller controls the number of row electrodes addressed at a first display load ratio to be smaller than the number of row electrodes addressed at a second display load ratio smaller than the first display load ratio in at least one first sub-field.