Patent ID: 6817073
Filing Date: 2004-11-16
Classification: H01L,Y10S,Y10T

Abstract:
A manufacturing method for thin film piezoelectric elements, comprising:forming a plurality of first thin film patterns on a first substrate, wherein a first piezoelectric thin film is hold between a first main electrode layer and a first opposed electrode layer on said first substrate, and at leant a part of said first main electrode layer disposed at said first substrate side is larger in shape than said first piezoelectric thin film and said first opposed electrode layer; forming a plurality of second thin film patterns on a second substrate, wherein a second piezoelectric thin film is held between a second main electrode layer and a second opposed electrode layer on said second substrate, and said second piezoelectric thin film, said second main electrode layer, and said second opposed electrode layer are substantially same in shape as said first piezoelectric thin film; forming a plurality of structures, integrated by bonding said first thin film pattern and said second thin film pattern opposed and positioned to each other no as to be placed one upon another, and an insulating resin layer for protecting amid structures; selectively removing only amid second substrate in order to expose said plurality of structures protected by said insulating resin layer; etching said insulating resin layer into a shape that covers a peripheral portion of said structure except a part of said first main electrode layer; forming a connecting electrode pad for connecting said first main electrode layer, said first opposed electrode layer, said second main electrode layer, and said second opposed electrode layer to external equipment; and selectively removing only said first substrate.