Boundary acoustic wave device comprising Ni diffused in Au...

Details Boundary acoustic wave device comprising Ni diffused in Au... Boundary acoustic wave device comprising Ni diffused in Au...

2008-08-13

2009-06-30

Summons, Barbara (Department: 2817)

Wave transmission lines and networks

Coupling networks

Electromechanical filter

C333S195000, C310S31300R, C310S31300R, C310S364000, C029S025350

Reexamination Certificate

active

07554428

ABSTRACT:
A boundary acoustic wave device includes a first medium, a second medium, and an IDT electrode disposed at an interface between the first medium and the second medium, the IDT electrode having an Au layer defining a main electrode layer, wherein a Ni layer is laminated so as to contact at least one surface of the Au layer, and a portion of Ni defining the Ni layer is diffused from the Ni layer side surface of the Au layer toward the inside of the Au layer.

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