Patent ID: 6476445
Filing Date: 2002-11-05
Classification: H01L

Abstract:
A semiconductor structure comprising:a substrate comprising a first surface; a continuous buried oxide layer disposed at a first depth and at a second depth within the substrate, wherein the first depth and the second depth are unequal; a first trench between the first surface and the buried oxide layer at the first depth, wherein the first trench touches the buried oxide layer, wherein the first trench electrically isolates a first region within the substrate from a second region within the substrate, wherein the first region includes a first semiconductor device, and wherein the second region includes a second semiconductor device, wherein the second semiconductor device is a vertical diode; and a second trench between the first surface and the buried oxide layer at the second depth, wherein the second trench touches the buried oxide layer, wherein the second trench electrically isolates the second region within the substrate from a third region within the substrate, and wherein the third region includes a third semiconductor device.