Thickness shear crystal resonator and manufacturing method there

Details Thickness shear crystal resonator and manufacturing method there Thickness shear crystal resonator and manufacturing method there

1991-12-23

1994-02-01

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

29 2535, 310367, 310369, H01L 4108

Patent

active

052834964

ABSTRACT:
A thickness, shear crystal resonator and a method of manufacturing therefor in which a natural crystal surface is appeared on at least a part of surfaces of crystal plate thereof to the extent that the part is made substantially transparent, the impedance of the crystal resonator is made small thereby and a large Q factor can be obtained. And, there is found no dip in the temperature characteristics of the impedance and the vibrating frequency of the crystal resonator.

REFERENCES:
patent: 2392429 (1946-01-01), Sykes
patent: 2446443 (1948-08-01), Tibbetts
patent: 2705392 (1955-04-01), Imler
patent: 3384768 (1968-05-01), Shockley
patent: 3569750 (1971-05-01), Beaver
patent: 4188557 (1980-02-01), Mattuschka
patent: 4530139 (1985-07-01), Miller
patent: 4638536 (1987-01-01), Vig

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