Metal working – Piezoelectric device making
Patent
1976-09-09
1977-09-27
Hall, Carl E.
Metal working
Piezoelectric device making
29593, 219121LM, 310312, H01L 4122
Patent
active
040501264
ABSTRACT:
A method of adjusting the frequency and temperature coefficient of a GT cut quartz oscillator comprises starting with a blank of approximately the frequency desired. An electrode film is deposited on the front and rear faces of the blank. The side ratio between a longer side and a shorter side is adjusted to obtain a zero temperature coefficient. Thereafter portions of the electrode film along the longer sides of the oscillator are removed to reduce the area of the electrode film so as to obtain the desired frequency without changing the side ratio and thus without disturbing the zero temperature coefficient.
REFERENCES:
patent: 3913195 (1975-10-01), Beaver
Ikeno Hitoshi
Sugita Mitsuyuki
Yanagi Hirofumi
Adams Bruce L.
Burns Robert E.
Hall Carl E.
Kabushiki Kaisha Seikosha
Lobato Emmanuel L.
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