Patent ID: 8585184
Filing Date: 2013-11-19
Classification: B41J,H01L

Abstract:
1. A piezoelectric element comprising: a first electrode containing a noble metal; a first multilayer composite disposed on the first electrode; a second multilayer composite disposed on the first electrode at a distance from the first multilayer composite; an oxide film partly disposed on the surface of the first electrode between the first multilayer composite and the second multilayer composite; and a covering layer covering the side surfaces of the first and second multilayer composites, and the oxide film and the surface of the first electrode between the first multilayer composite and the second multilayer composite, wherein the first multilayer composite and the second multilayer composite each include a piezoelectric layer and a second electrode over the piezoelectric layer, and wherein the first multilayer composite and the second multilayer composite each further include a conductive layer that is disposed between the first electrode and the piezoelectric layer, and the oxide film and the conductive layer are made of the same material.