Patent ID: 7932676

Claim:
A plasma display panel comprising: a front substrate; a rear substrate disposed facing the front substrate; and barrier ribs dividing a space between the front substrate and the rear substrate into discharge spaces, wherein: a protective film is formed in such a manner that the protective film covers a dielectric layer formed on the front substrate and is in contact with the discharge spaces; a surface portion of the protective film substantially is composed of magnesium, aluminum, nitrogen, and oxygen; a ratio of the number of atoms of the aluminum to a total of the number of atoms of the magnesium and the number of atoms of the aluminum is at least 2.1% but not more than 66.5%; a ratio of the number of atoms of the nitrogen to a total of the number of atoms of the nitrogen and the number of atoms of the oxygen is at least 1.2% but not more than 17.2%; and a ratio of the total of the number of atoms of the nitrogen and the number of atoms of the oxygen to the total of the number of atoms of the magnesium and the number of atoms of the aluminum is at least 1.0 but not more than 1.35.