Patent ID: 7914356

Claim:
A method of manufacturing a plasma display panel comprising a sealing step of: arranging a front plate formed with a display electrode, a dielectric layer, and a protective layer on a transparent substrate and a rear plate formed with an address electrode, a barrier rib, and a phosphor layer so as to face each other; and sealing a periphery of the front plate and the rear plate with a sealing material, the sealing step including: a sealing material application step of applying the sealing material to the rear plate; a tentative firing step of tentatively firing the applied sealing material at a tentative firing temperature; and a sealing and bonding step of arranging the front plate and the rear plate so as to face each other and sealing the plates by softening and melting the sealing material, wherein the sealing material is configured by a glass frit having bismuth oxide, with properties in that a softening point temperature changes with respect to a heating temperature and a rate of change of the softening point temperature differs with respect to the heating temperature, as the main component, the sealing material exhibiting a crystallization temperature at which crystallization starts; and wherein the tentative firing temperature in the tentative firing step is 10° C. through 60° C. lower than the crystallization temperature at which crystallization of the sealing material starts.