Plasma display panel

1. A plasma display panel comprising:

a front plate including a display electrode, a dielectric layer, and a protective layer on a glass substrate; and

a back plate including an address electrode, a barrier rib, and a phosphor layer on a substrate, wherein:

the front plate is faced to the back plate, and a periphery of the front plate and the back plate is sealed with a sealing material to form discharge space,

the sealing material contains, as a glass component, bismuth oxide and at least one of molybdenum oxide and tungsten oxide,

the sealing material contains no lead, and

the sealing material contains at least one of Ag 2 WO 4 , Ag 2 W 4 O 13 , Ag 2 MoO 4 , Ag 2 Mo 2 O 7 , and Ag 2 MO 4 O 13 ,

content of bismuth oxide in the glass component is between 75 and 85% inclusive, and

glass softening point of the glass component including said content of bismuth oxide is 400° C. or higher.

2. The plasma display panel of claim 1 , wherein

the sealing material contains, as a heat-resistant filler, at least one of cordierite, forsterite, β-eucryptite, zircon, mullite, barium titanate, aluminum titanate, titanium oxide, molybdenum oxide, tin oxide, aluminum oxide, and quartz glass.

3. The plasma display panel of claim 1 , wherein

at least one of the display electrode and the address electrode is a metal electrode containing silver.

4. The plasma display panel of claim 1 , wherein

content of the molybdenum oxide or the tungsten oxide is 0.2 wt % or more.

5. The plasma display panel of claim 1 , wherein

content of the molybdenum oxide or the tungsten oxide is 0.2 wt % to 5 wt %.