Patent ID: 7267840
Filing Date: 2007-09-11
Classification: H01L

Abstract:
1. A method of manufacturing a piezoelectric/electrostrictive film device comprising a ceramic substrate and a piezoelectric/electrostrictive operation portion formed on said ceramic substrate, said piezoelectric/electrostrictive operation portion including a lower electrode, a piezoelectric/electrostrictive layer, and an upper electrode, wherein said piezoelectric/electrostrictive layer is formed to extend beyond ends of at least one of said electrodes so that ends of a projected portion of said piezoelectric/electrostrictive layer project beyond said ends of said at least one electrode, said method comprising the steps of: forming said piezoelectric/electrostrictive layer of said piezoelectric/electrostrictive operation portion so that ends of said projected portion of said piezoelectric/electrostrictive layer project beyond ends of at least one of said electrodes; preparing a coating liquid by admixing a polymerizable oligomer and inorganic particles in a dispersing medium in a sufficient amount to allow said coating liquid to permeate through a gap between at least said projecting portion of said piezoelectric/electrostrictive layer and said ceramic substrate; applying said coating liquid to one or more discrete application portions of said at least one electrode using a coating apparatus comprising drying said coating liquid to form a coupling member which couples said ends of said projected portion of said piezoelectric/electrostrictive layer to said ceramic substrate.