| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic device which can operate normally and stably over a long period without causing degradation of characteristics in an electronic component and further with which a chamber can be made smaller. SOLUTION: This electronic device airtightly houses an electronic component 3 inside a chamber composed of an insulating substrate 1 and a lid body 2 bonded via a sealing material 7. The electronic component 3 is adhesively fixed inside the chamber 4 via a silicon resin 5. The sealing material 7 has a three- layer structure composed of a first region 7a having a thickness of 1-10μm interposed by second regions 7b vertically therebetween. The first region 7a and the second regions 7b are composed of glass ingredients including 50-65 weight % of lead oxide, 2-10 weight % of boron oxide, 10-30 weight % of lead fluoride, 1-6 weight % of zinc oxide and 10-20 weight % of bismuth oxide. Furthermore, the second regions 7b contain a filler composed of 26-45 weight % of lead titanate compound.
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