Method of producing housing element for quartz crystal oscillato

Details Method of producing housing element for quartz crystal oscillato Method of producing housing element for quartz crystal oscillato

1980-04-17

1981-09-08

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

1566611, 156663, H01L 21306, C03C 1500, C03C 2506

Patent

active

042882842

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.

REFERENCES:
patent: 261402 (1882-07-01), Sprague et al.
patent: 378423 (1888-02-01), Baynes
patent: 3421962 (1969-01-01), Topas
patent: 3888708 (1975-06-01), Wise et al.

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