Patent ID: 6499837
Filing Date: 2002-12-31
Classification: B41J,H01L

Abstract:
A manufacturing method of a piezoelectric element; comprising the steps of:forming a ZrO2 film on a substrate; forming a lower electrode on said ZrO2 film; forming a Ti layer having a thickness of not less than 4 nm and not more than 6 nm on said lower electrode; forming a piezoelectric precursor film on said Ti layer; and calcinating the obtained structure, wherein said lower electrode comprises: at least a first layer positioned as the uppermost layer and containing Ir; and a second layer positioned as the second uppermost layer and containing Pt, wherein the thickness of said second layer is not less than 30% and not more than 50% of the thickness of the entire lower electrode; and wherein said step for forming said lower electrode further comprises: at least a step of forming said second layer containing Pt; and a step of forming said first layer containing Ir on said second layer.