Method of manufacturing plasma display panel

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.