US 4,845,399 A · Laminated piezoelectric transducer

Abstract

A laminated piezoelectric transducer, comprising a laminate of a plurality of piezoelectric plates with paste electrodes inserted therebetween and bonding the plates together. Rows of metal extrusions are made by electroless plating onto the paste electrodes on the peripheral outer surface of the laminate. Each row of the metal extrusions is formed onto and electrically connected to alternate paste electrodes, so that by electrically connecting each row of the metal extrusions, the laminate of the piezoelectric plates is electrically connected in parallel. This laminated piezoelectric transducer allows the formation of the paste electrodes on the entire or at least substantially the entire main surfaces of the piezoelectric plates, and eliminates the need for the usual metal plate electrodes inserted between the piezoelectric plates.

Claims9

Dependent claims

A laminated piezoelectric transducer, comprising:

a laminate of a plurality of piezoelectric plates;
paste electrodes disposed between and bonding together said piezoelectric plates;
first and second rows of metal extrusions made be electroless plating onto said pasted electrodes extruding from said laminate at portions of the peripheral outer surface of said laminate, said first and second rows of the metal extrusions being separated in the direction of the periphery of said laminate and electrically connected to different alternative paste electrodes respectively;
and
first and second outer electrodes electrically connecting each of said first and second rows of said metal extrusions respectively.

2 more elements

Dependencies are inferred from the claim text.

Laminated piezoelectric transducer

Life of this patent

Laminated piezoelectric transducer

Life of this patent

Abstract

Claims9