Patent ID: 7567036

Claim:
A plasma display panel having a front substrate and a back substrate which are opposed to each other on both sides of a discharge space and between which are provided phosphor layers, a plurality of row electrode pairs, and a plurality of column electrodes extending in a direction at right angles to the row electrode pairs to form unit light emission areas in the discharge space in positions corresponding to intersections with the row electrode pairs, the discharge space being filled with a discharge gas, comprising: a magnesium oxide layer disposed in at least a position facing each of the unit light emission areas between the front and back substrates and which includes magnesium oxide crystals that emit ultraviolet light with a peak wavelength of 230 nm to 250 nm upon being excited by an ultraviolet light, wherein the magnesium oxide crystals have a cubic single crystal structure and a structure of cubic crystals fitted to each other, and a crystalline structure of the magnesium oxide crystals cause a cathode luminescence emission having a peak within a wavelength range of 200 nm to 300 nm.