| abstract |
The present invention relates to a sealing material containing a bismuth-based glass powder and a refractory filler powder, which flows well at a temperature of 530 ° C. or less and hardly deforms in a vacuum evacuation process at 450 to 500 ° C. It is a technical problem to improve characteristics and manufacturing efficiency of PDP and the like by obtaining materials. The sealing material of the present invention is a sealing material containing a bismuth-based glass powder and a refractory filler powder, wherein the bismuth-based glass powder has a glass composition represented by mass% in terms of the following oxide, Bi 2 O 3 67-90%, B 2 O 3 2-12%, Al 2 O 3 0-5%, ZnO 1-15%, BaO 0-10%, CuO 0-5%, Fe 2 O 30 3%, CeO 2 0 to 5%, Sb 2 O 3 0 to 5%, the mass ratio Bi 2 O 3 / B 2 O 3 is 11 or less, and refractory filler powder is alumina. It is characterized by containing 1 to 25% by volume. [Selection figure] None |