| 摘要 |
PURPOSE:To prevent yielding of blowholes and to improve packaging reliability, by constituting a sealing part, in which a bonding material is provided between the base part of a sealing body and a cap part, so that the thickness of the bonding material becomes partially narrow. CONSTITUTION:A low-melting point glass 5 is applied and printed along the periphery of the surface of a topmost layer 9 on the side of a base in a loop shape. The glass 5 is contacted with a protruded part 8, and a cap 2 is positioned here. This part is heated, and the glass at the outside of the protruded part 8 is fused. Thus the cap 2 and the base 1 are sealed. Expanded gas is yielded in a cavity 4 due to heating when a ceramic package is assembled and sealed. when said gas is going to enter a sealing part, the yield of blowholes is prevented by the protruded part 8. Or the yield of the blowholes is prevented by the decrease in thickness of a bonding material and the increase in surface tension of a material to be bonded. |
