Patent ID: 8449083
Filing Date: 2013-05-28
Classification: B41J,H01L,Y10T

Abstract:
1. A piezoelectric element comprising a multilayer body comprising: a substrate; and a low-resistance metal layer which is formed on the substrate and has a multilayer structure of two or more sublayers, wherein the low-resistance metal layer comprises a gold-containing sublayer comprising gold and another metal, wherein the low-resistance metal layer comprises the gold-containing sublayer and a metal sublayer formed on the gold-containing sublayer, which metal sublayer is situated at a surfacemost portion of the low-resistance metal layer on the opposite side thereof form the substrate, which piezoelectric element further comprises: an electrode substrate wherein the low-resistance metal layer serves as a lower electrode layer, a piezoelectric layer formed on the lower electrode layer of the electrode substrate, and an upper electrode layer formed on the piezoelectric layer.