Patent ID: 7770274
Filing Date: 2010-08-10
Classification: H01H,H01L,H03H,Y10T

Abstract:
1. A method for manufacturing a piezoelectric thin film device, comprising: forming an amorphous metal film above a substrate; forming a piezoelectric film above the amorphous metal, so that one of crystal axis of the piezoelectric film is aligned in a direction perpendicular to a surface of the amorphous metal; forming a top metal film on a surface of the piezoelectric film, the top metal film facing the amorphous metal film so as to sandwich the piezoelectric film; and forming an orientation metal film on the surface of the amorphous metal film prior to forming the piezoelectric film, so that one of crystal axis of the orientation metal film is aligned in the direction perpendicular to the surface of the amorphous metal, wherein the orientation metal film is one of a face-centered cubic lattice metal and a body-centered cubic lattice metal.