Patent ID: 7880387

Claim:
A plasma display panel equipped with a front substrate and a back substrate facing each other on either side of a discharge space, a plurality of row electrode pairs formed on either the front substrate or the back substrate, a plurality of column electrodes formed on either the front substrate or the back substrate, and a dielectric layer covering the row electrode pairs, the plasma display panel comprising: a partition wall unit that is provided between the front substrate and the back substrate for partitioning the discharge space into unit light emission areas each corresponding to an intersection between the row electrode pair and the column electrode, and formed in an approximate grid shape having transverse walls and vertical walls surrounding the unit light emission areas individually; and a protective layer that covers the dielectric layer and has a crystalline magnesium oxide layer arranged on a thin-film magnesium oxide layer, the crystalline magnesium oxide layer including a magnesium oxide crystal having a particle diameter of 2000 or more angstroms and capable of emitting a cathode-luminescence emission having a peak within a wavelength range from 230 nm to 250 nm, wherein the magnesium oxide crystal is exposed to the discharge space, and wherein each of the row electrodes constituting each row electrode pair has an electrode body extending in a row direction and a plurality of electrode protrusions each extending out from the electrode body toward its counterpart row electrode in the row electrode pair to a position opposite a corresponding electrode protrusion of the counterpart row electrode with a discharge gap in between, the opposing electrode protrusions facing each unit light emission area.