Patent ID: 7006334

Claim:
A thin film piezoelectric element, comprising: a structure including (i) a first piezoelectric thin film sandwiched between a first main electrode layer and a first opposed electrode layer, said first main electrode layer and said first opposed electrode layer each having a projection extended away from said first main electrode layer, and (ii) a second piezoelectric thin film sandwiched between a second main electrode layer and a second opposed electrode layer in a mirror-symmetrical relationship with respect to said first piezoelectric thin film, said second opposed electrode layer having a projection extended away from said second main electrode layer, with said first opposed electrode layer and said second opposed electrode layer being opposed and bonded to each other; an insulating resin layer on an outer periphery of said structure; and connection wiring arranged on said insulating resin layer in order to establish electrical connection between said projection of said first main electrode layer and said second main electrode layer, and between said projection of said first opposed electrode layer and said projection of said second opposed electrode layer.