Subminiature tuning fork quartz crystal vibrator with nicrome an

Details Subminiature tuning fork quartz crystal vibrator with nicrome an Subminiature tuning fork quartz crystal vibrator with nicrome an

1978-07-19

1981-02-24

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310364, 310370, H01L 4108

Patent

active

042530369

ABSTRACT:
A subminiature flexural mode quartz crystal vibrator comprises a tuning fork formed by photolithographic techniques from a thin quartz crystal plate obtained by rotating an X-cut plate around the X-axis by an angle of 0.degree. to 10.degree. and further rotating the X-cut plate around the Y'-axis by an angle of 70.degree. to 90.degree., the plate having a thickness of less than 0.2 mm. Electrodes formed on sides of the tines are of a different metallic material from planar electrodes formed on at least one of the top and bottom surfaces of the tines. A side electrode of one tine is electrically connected by an overlapping joint with a planar electrode of the other tine.

REFERENCES:
patent: 2266768 (1941-12-01), Kornei
patent: 2289954 (1942-07-01), Arndt, Jr.
patent: 3831043 (1974-08-01), Hoffman et al.
patent: 3940638 (1976-02-01), Terayama
patent: 3944862 (1976-03-01), Shimoi et al.
patent: 3969641 (1976-07-01), Oguchi et al.
patent: 4099078 (1978-07-01), Shibata et al.

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