Piezoelectric resonator element, piezoelectric, resonator,...

Details Piezoelectric resonator element, piezoelectric, resonator,... Piezoelectric resonator element, piezoelectric, resonator,...

2008-05-06

2008-05-06

Martin, J. San (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S365000, C310S322000

Reexamination Certificate

active

11068988

ABSTRACT:
Exemplary embodiments provide a piezoelectric resonator element, to reduce the reaching of an attenuating vibration of a main vibration to a marginal edge of the piezoelectric resonator element, as well as to stabilize an oscillating-frequency without worsening the CI value, nor inducing another vibration mode. The piezoelectric resonator element having a thickness shear vibration as a main vibration, a first groove and a second groove formed so as to surround the center part of a main surface, and the thickness at the first groove and the second groove structured to be between 70% to 96%, inclusive, of the thickness of the center part of the resonator element.

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