Patent ID: 7982367
Filing Date: 2011-07-19
Classification: C04B,H01L,Y10T

Abstract:
1. A piezoelectric/electrostrictive element comprising: a piezoelectric/electrostrictive drive unit possessing a piezoelectric/electrostrictive body made of a piezoelectric/electrostrictive material; and a film external terminal electrode which is disposed on at least one surface of the piezoelectric/electrostrictive body and which substantially does not contain a glass component, wherein the external terminal electrode is an electrode having a laminated structure comprising a first electrode layer disposed to contact the piezoelectric/electrostrictive body closely and made of a first electrode material which contains a first metal component as well as the piezoelectric/electrostrictive material and a second electrode layer disposed on the first electrode layer and made of a second electrode material which contains a second metal component and substantially does not contain the piezoelectric/electrostrictive material, and the first metal component and the second metal component contain the same metal elements.