Piezoelectric transformer having improved electrode arrangement

Details Piezoelectric transformer having improved electrode arrangement Piezoelectric transformer having improved electrode arrangement

1994-01-03

1995-03-28

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310366, H01L 4108

Patent

active

054020310

ABSTRACT:
A long relatively thin rectangular body of piezoelectric material is divided into driving and driven regions in a longitudinal direction thereof. Two electrodes are applied respectively to two major surfaces of the driving region which is polarized in a thickness direction of the driving region. Another two electrodes are formed on one major surface of the driven region. Each of the two electrodes applied to the driven region has a plurality of finger-like portions which extend in the longitudinal direction. The finger-like portions of formed on the driven region are arranged in an interdigital manner. The driven region has a plurality of regions which are defined by adjacent finger-like portions and which are polarized in a direction perpendicular to the longitudinal direction.

REFERENCES:
patent: 2974296 (1961-03-01), Rosen
patent: 3487239 (1969-12-01), Schafft
patent: 3736446 (1973-05-01), Berlincourt et al.
patent: 3764848 (1973-10-01), Berlincourt
patent: 5118982 (1992-06-01), Inoue

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