Method of manufacturing crystal resonators having low accelerati

Details Method of manufacturing crystal resonators having low accelerati Method of manufacturing crystal resonators having low accelerati

1989-12-26

1991-06-11

Hall, Carl E.

Metal working

Piezoelectric device making

29593, 310312, H01L 4122

Patent

active

050221302

ABSTRACT:
In a process of producing crystal resonators in which the direction and magnitude of the gamma vector is substantially the same for each resonator, a method of altering the resonator during the process to change the resonator mass, shape, or electrode placement so as to reduce the gamma vector magnitude of each crystal. This alteration may be done by adding mass, removing mass, or both adding and removing mass, or by positioning the electrodes to selectively position the electric field in the crystal, all in order to move the location of the active region of vibration and thereby reduce the gamma vector.

REFERENCES:
patent: 4211947 (1980-07-01), Ikeno et al.
patent: 4262227 (1981-04-01), Ikeno et al.
patent: 4370584 (1983-01-01), Ikeno et al.
patent: 4418299 (1983-11-01), Momosaki
patent: 4641055 (1987-02-01), Tanaka
patent: 4642505 (1987-02-01), Arranitis

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