Patent ID: 6759282
Filing Date: 2004-07-06
Classification: H01L

Abstract:
A method of fabricating an electronic device using an SOI technique, said SOI technique resulting in formation of a buried oxide layer, said method comprising:fabricating at least one first component of said electronic device in a first single crystal semiconductor layer; and depositing a conductive material to fabricate at least one second component of said electronic device in a second single crystal semiconductor layer below and separated from said first single crystal semiconductor layer by said buried oxide layer, wherein one of said second components comprises a component embedded in a substrate beneath said buried oxide layer and said buried oxide layer is thinned locally to perform a function integral to said electronic device; said fabricating further comprising: forming a trench in said substrate; forming an insulator on at least one of a sidewall surface and a bottom surface; and depositing said conductive material within said trench such that said deposited conductive material and a top surface of said substrate are essentially planar.