Patent ID: 8513888

Claim:
A plasma display panel comprising: a front plate including a dielectric layer and a protective layer covering the dielectric layer, the protective layer including a base layer disposed on the dielectric layer; a rear plate disposed opposite to the front plate, the rear plate including an underlying dielectric layer; a plurality of barrier ribs disposed on the underlying dielectric layer; and phosphor layers disposed on the underlying dielectric layer and on side surfaces of the barrier ribs, wherein: aggregated particles, in which a plurality of crystal particles of magnesium oxide are aggregated, are dispersed on an entire surface of the base layer; the base layer includes at least a first metal oxide and a second metal oxide; the base layer exhibits at least one peak in X-ray diffraction analysis, the peak lying between a first peak of the first metal oxide in X-ray diffraction analysis and a second peak of the second metal oxide in X-ray diffraction analysis, the first peak and the second peak showing a plane direction identical to that which the peak shows; the first metal oxide and the second metal oxide are two selected from the group consisting of magnesium oxide, calcium oxide, strontium oxide, and barium oxide; and the base layer further includes sodium and potassium.