Patent ID: 8044590

Claim:
A plasma display panel comprising: a pair of substrate assemblies opposed to each other sandwiching discharge spaces formed to seal a discharge gas therein, one of the pair of substrate assemblies including: display electrodes arranged on a substrate; a dielectric layer covering the display electrodes; and a protective layer covering the dielectric layer, wherein the protective layer includes MgO single crystals uniformly distributed on an MgO film, the MgO single crystals have crystal orientations that are aligned in one direction such that an intensity of X-ray diffraction signals at a (200) crystal face after normalization is the same as or more than an intensity of X-ray diffraction signals at a (111) crystal face per micron of the MgO film, the MgO single crystals have a grain size of 0.6 μm or more at 50% of a cumulative percentage in a grain size distribution, and the MgO single crystals have a grain size at 10% of a cumulative percentage in the grain size distribution that is 0.5 times or more of the grain size at 50% of a cumulative percentage.