Patent ID: 7742018

Claim:
A plasma display device for displaying an image on a plasma display panel in accordance with an input video signal, said plasma display panel having a plurality of row electrode pairs, a plurality of column electrodes intersecting with said plurality of row electrode pairs, so as to form display cells at the intersections, respectively, and a magnesium oxide layer including magnesium oxide moncrystals provided at a portion facing each of the display cells, the magnesium oxide moncrystals having a characteristic to emit cathode luminescence light having a peak within a wavelength region of 200-300 nm when excited by electron beam irradiation, a display period for one field of the input video signal being configured of a plurality of subfields each formed of an address period and a sustain period for the image display, and at least at a starting subfield of each field, prior to the address period, a reset period for applying a reset pulse between row electrodes forming each of said row electrode pairs being provided, said plasma display device comprising: an addressing portion which selectively generates address discharge in each of said display cells in accordance with pixel data based on the video signal in the address period; a sustaining portion which applies a sustain pulse between row electrodes forming each of said row electrode pairs in said sustain period; and a wall-charge adjust portion which applies a wall-charge adjusting pulse between row electrodes forming each of said row electrode pairs in a period from an end of the address period to a beginning of the sustain period to generate a weak discharge, so that an amount of wall electric charge excessively existed in each of said display cells before the beginning of the sustain period is reduced.