Patent ID: 6716363
Filing Date: 2004-04-06
Classification: H01L,Y10T

Abstract:
A method of fabricating piezoelectric elements each having a wrap-around electrode wherein the piezoelectric elements are formed from a sheet of piezoelectric substrate having a top electrode and a bottom electrode covering an entire top and bottom surfaces, respectively, of the substrate, the method comprising the steps of:(a.) creating an isolation trench in the top electrode; (b.) exposing the substrate along a first direction to create first exposed side surfaces of the substrate, wherein the first direction is located remotely from the isolation trench; (c.) depositing an electrode on the first exposed side surfaces of the substrate; (d.) exposing the substrate along a second direction to create second exposed side surfaces of the substrate wherein the second direction is located remotely from the isolation trench on the opposite side of the isolation trench from the first direction wherein the first and second directions define a length of each element; and (e.) exposing the substrate along a third direction at multiple points on the substrate and defines a width of each element.