Chip type piezoelectric device

Details Chip type piezoelectric device Chip type piezoelectric device

1988-05-02

1989-10-24

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310366, 310358, H01L 4108

Patent

active

048764760

ABSTRACT:
A chip type piezoelectric device includes an element body formed of cofired ceramic material and having at least a pair of excitation electrodes opposed to each other with a portion of the element body interposed therebetween. At least the portion interposed between the excitation electrodes has piezoelectricity imparted thereto, whereby this portion serves as a vibrating portion. Of the pair of excitation electrodes at least one excitation electrode is positioned in the interior of the element body, and the element body is formed with a cavity only on the side of this interiorly positioned excitation electrode away from the vibrating portion.

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