| 摘要 |
PROBLEM TO BE SOLVED: To obtain a package capable of maintaining a connected state to an external electric circuit board over a long period of time by mixing a lithium silicate glass containing a specific amount of Li2 O and having a yield point in a specific temperature range with forsterite and quartz as essential components by a specific ratio, and performing sintering. SOLUTION: As an insulating board 1 for an element housing package A, a molding containing 20-80vol.% of lithium silicate glass containing 5-30wt.% of Li2 O and having a yield point of 400-800 deg.C 20-80vol.% by the total amount of forsterite and quartz as a filler component is sintered to manufacture a board. Consequently, it becomes possible to obtain a sintered body having a thermal expansion coefficient of 8-18ppm/ deg.C in a temperature range of 40-400 deg.C, and to lighten the generation to thermal stress between the body and an external electric circuit board B and to maintain an excellent connection over a long period of time. |
