Patent ID: 7688287

Claim:
A plasma display apparatus comprising: a plasma display panel including, a plurality of row electrode pairs extending in a row direction of the plasma display panel, a plurality of column electrodes extending in a column direction of the plasma display panel, and a plurality of discharge cells which serve as pixels at intersections between said plurality of row electrode pairs and said plurality of column electrodes, each said discharge cell having a discharge space; a magnesium oxide layer having magnesium oxide crystals that is formed on a predetermined face of each said discharge cell, is exposed to the discharge space and performs cathode luminescence light emission with a peak in a 200 to 300 nm waveband as a result of being excited upon electron beam irradiation; a drive portion that causes discharge in the discharge space by applying a drive pulse to each of the row electrode pairs and each of the column electrodes in accordance with a picture signal in each of a plurality of subfields that constitute a unit display period of the picture signal; and a control portion that adjusts a pulse voltage value and/or pulse width of the drive pulse in accordance with an accumulated usage time of the plasma display panel, wherein the magnesium oxide crystals have a grain diameter of 2000 angstroms or more, wherein the plurality of subfields includes an address process, wherein discharge takes place in the address process to create a wall charge in the discharge space, and wherein the magnesium oxide crystals reduce the discharge delay during the address process.