Piezoelectric-resonance device

Details Piezoelectric-resonance device Piezoelectric-resonance device

1994-02-24

1995-08-22

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310320, H01L 4108

Patent

active

054443261

ABSTRACT:
A piezoelectric-resonance device comprising a piezoelectric ceramic body, a pair of excitation electrodes provided so as to be opposed to each other with the piezoelectric ceramic body interposed therebetween, and connecting conductive portions connecting the excitation electrodes and side edges of the piezoelectric ceramic material, a portion, which is interposed between the excitation electrodes, of the piezoelectric ceramic body being polarized in the opposite direction to the direction of polarization of the other portion thereof.

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patent: 5057801 (1991-10-01), Kittaka et al.
patent: 5168253 (1992-12-01), Nakagawa et al.

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