Patent ID: 8102102
Filing Date: 2012-01-24
Classification: H03H

Abstract:
1. A thin film tuning-fork type inflection resonator, comprising: a substrate; a piezoelectric thin film formed into a tuning-fork shape, said piezoelectric film having a supporting part at which the piezoelectric thin film is fixed to the substrate, and further having a vibrating part which is fixed to the substrate through said supporting part, and which is formed a predetermined distance over the substrate; a first metallic electrode formed on a first surface of said piezoelectric thin film; and a second metallic electrode formed on a second surface of said piezoelectric thin film opposite said first surface of said piezoelectric thin film, wherein said first metallic electrode is deposited as a film on said first surface of said piezoelectric thin film; wherein said piezoelectric thin film is formed so as to cover said second metallic electrode; and wherein a first area of said vibrating part of said piezoelectric thin film is a non-laminate single film of said piezoelectric film; and a second area of said vibrating part of said piezoelectric thin film is laminated with said first metallic electrode and said second metallic electrode.