Piezoelectric quartz crystal products and fabrication methods th

Details Piezoelectric quartz crystal products and fabrication methods th Piezoelectric quartz crystal products and fabrication methods th

1977-05-26

1978-10-31

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310353, 310365, 310366, 310367, 333 72, H01L 4110

Patent

active

041236807

ABSTRACT:
This disclosure relates to improved piezoelectric quartz crystal products preferably used in quartz crystal filter and resonator applications, and fabrication methods therefor. Various embodiments are disclosed including a substantially circular, a square, and a rectangular quartz crystal product wherein each one contains a single triangular shaped electrode located on each of the two sides thereof in an overlapping arrangement. Other embodiments disclosed include a substantially circular, a square, and a rectangular quartz crystal product wherein each one contains multiple electrodes such as two spaced apart triangular shaped electrodes located on each side of the two sides thereof in an overlapping arrangement. Another disclosed embodiment is a substantially pie shaped (preferably quarter pie shaped) quartz crystal product which has either a single, substantially pie shaped, electrode located on each side of the two sides thereof in an overlapping configuration or a pair of spaced apart substantially pie shaped electrodes located on each side of the two sides thereof in an overlapping configuration. A method is also disclosed for fabricating the substantially pie shaped quartz crystal product of this invention.

REFERENCES:
patent: 2635199 (1953-04-01), Wolfskill
patent: 3336487 (1967-08-01), Martyn et al.
patent: 3582836 (1971-06-01), Kent
patent: 3638146 (1972-01-01), Takaku
patent: 3924259 (1975-12-01), Butler
patent: 3970880 (1976-07-01), Deutschmann et al.

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