Method of producing housing element for quartz crystal oscillator
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United States of America Patent
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-
Sep 8, 1981
Issued Date -
N/A
app pub date -
Apr 17, 1980
filing date -
Dec 5, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A quartz crystal oscillator package comprising a quartz crystal vibrator leaf enclosed in an evacuated housing. The vibrator leaf frame is sandwiched and sealed between a pair of housing elements formed by etching at one time the periphery of each housing element and at another time etching a concave portion in each housing element. Opposed concave portions provide the internal volume wherein the vibrator leaf is sealed under vacuum. Using heat and vacuum, a metal film deposited on the sealing surfaces of the housing elements fuses with a binder material to form a eutectic alloy seal. A flat package having small size, high structural strength, an excellent hermetic seal, and high internal vacuum is produced by this method.
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