Plasma display panel

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.