Patent ID: 7759189
Filing Date: 2010-07-20
Classification: H01L

Abstract:
1. A method comprising: depositing at least one layer of material on a wafer body; forming a trench in the wafer body by etching the wafer body and through a portion of the at least one layer deposited on the wafer body; depositing a first dielectric material on the wafer body in the trench and on a top layer of the at least one layer of material deposited outside of the trench; forming a first plate on the first dielectric material by depositing a single layer in the trench and extending outside of the trench and isolated from the wafer body by the first dielectric material; depositing a second dielectric material on the first plate inside of the trench and outside of the trench; and forming a second plate independent of the first plate, the second plate being formed on the second dielectric material and extending outside of the trench and isolated from the wafer body and the first plate.