Face shear mode quartz crystal resonator

Details Face shear mode quartz crystal resonator Face shear mode quartz crystal resonator

1989-03-07

1990-02-13

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310367, 310368, H01L 4108

Patent

active

049009710

ABSTRACT:
A face shear mode quartz crystal resonator having a vibrational portion and supporting portions incorporated therein by an etching method. A flexural portion of the supporting portion is connected with a central portion of a side of the vibrational portion. The width W and length L of the flexural portion connected with the vibrational portion are designed so as to meet "W.ltoreq.0.67L". The supporting portions are provided at the edges in the z'-axis direction of the vibrational portion which is substantially square and fixedly supported via both distal end portions of the supporting portions, and each side of the vibrational portion is from 0.72 mm to 2.02 mm.

REFERENCES:
patent: 4313071 (1982-01-01), Hermann et al.
patent: 4350918 (1982-09-01), Sato
patent: 4355257 (1982-10-01), Kawashima et al.

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