Patent ID: 8567918
Filing Date: 2013-10-29
Classification: B41J,H01L,Y10T

Abstract:
1. A piezoelectric element comprising: a substrate; a first conductive layer disposed above the substrate; a second conductive layer; a piezoelectric layer comprising a driving region and a non-driving region, wherein the driving region is disposed between the first conductive layer and the second conductive layer; and a relaxing layer disposed above a top surface of the piezoelectric layer above the non-driving region; wherein the second conductive layer is disposed above at least the relaxing layer and a side surface of the piezoelectric layer; wherein the relaxing layer comprises a first side surface connecting a top surface of the relaxing layer and the side surface of the piezoelectric layer; and a second side surface connecting the top surface of the relaxing layer and the top surface of the piezoelectric layer; and an inclination of the second side surface with respect to the top surface of the relaxing layer is smaller than an inclination of the first side surface with respect to the top surface of the relaxing layer.