onto an exposed surface of the dielectric layer 314 and sidewalls of the partition wall 315 both formed on the electrically insulating substrate 301 of the rear substrate 352 then the phosphor paste is dried and baked as a result there is formed the blue light emitting phosphor layer 311 having a thickness of about 10 micrometers hereinafter there is fabricated a plasma display panel including the blue light emitting phosphor layer in accordance with the first embodiment in accordance with the method of fabricating the plasma display panel illustrated in fig1 a predetermined drive voltage was applied to the plasma display panel including the thus fabricated blue light emitting phosphor layer in accordance with the first embodiment to cause the blue light emitting phosphor layer to emit a blue light after the plasma display panel has been driven continuously for 1000 hours a brightness of a blue light emitted from the blue light emitting phosphor layer was measured a threshold for an initial brightness was set equal to 100 cd m 2 and a threshold for a brightness after continuous 1000 hour operation was set equal to 80 cd m 2 specifically if a brightness measured after the plasma display panel has been driven continuously for 1000 hours was reduced by more than 20.