Surface acoustic wave element, and surface acoustic wave...

Details Surface acoustic wave element, and surface acoustic wave... Surface acoustic wave element, and surface acoustic wave...

2007-05-15

2007-05-15

Schuberg, Darren (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S31300R

Reexamination Certificate

active

10852104

ABSTRACT:
A surface acoustic wave element includes: metal patterns that include interdigital transducers, each of the metal patterns being formed with a first alloy or multi-layer film of metals having different standard electrode potentials; and metal films each formed with a second alloy or multi-layer film containing metals having different standard electrode potentials from the standard electrode potentials of the metals forming the first alloy or multi-layer film, the metal films being formed at least on a part of the regions other than the regions corresponding to the electrode fingers of the interdigital transducers of all the metal patterns that are electrically independent of one another.

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