Laminated piezoelectric device

Details Laminated piezoelectric device Laminated piezoelectric device

2004-12-17

2010-02-02

SanMartin, J. (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S328000, C310S358000

Reexamination Certificate

active

07656077

ABSTRACT:
A laminated piezoelectric device obtained by alternately laminating the piezoelectric layers containing Pb and the conducting layers containing palladium as a conducting component, wherein the piezoelectric layer formed between the two conducting layers has layer regions where Pb and Pd are mixed together in the interfacial portions thereof relative to the conducting layers, the layer regions having a thickness of not larger than 3% of the thickness of the piezoelectric layer. The laminated piezoelectric device is formed by co-firing the Pb-containing piezoelectric layers and the palladium (Pd)-containing layers, the piezoelectric layers therein having a large insulation resistance and good piezoelectric characteristics.

REFERENCES:
patent: 6819540 (2004-11-01), Allen et al.
patent: 2007/0209173 (2007-09-01), Hira et al.
patent: 2008/0222866 (2008-09-01), Miyoshi
patent: 07-231127 (1995-08-01), None
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patent: 2002-261346 (2002-03-01), None
patent: 2002-299710 (2002-10-01), None
patent: 2003-324223 (2003-11-01), None
patent: 2006228866 (2006-08-01), None

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