Patent ID: 8039357
Filing Date: 2011-10-18
Classification: H01L

Abstract:
1. A method of forming a semiconductor-on-insulator substrate, comprising: providing a base region of a base substrate, a silicon-containing semiconductor region over the base region, and an insulative layer over the silicon-containing semiconductor region; etching cooling trenches into the insulative layer to the silicon-containing semiconductor region; selectively growing relative to the insulative layer a bridging material over the insulative layer to bridge across the cooling trenches with bridging material and form covered elongated cooling trenches; providing a release region intermediate the silicon-containing semiconductor region and the base region of the base substrate; at an interface of the release region and the silicon-containing semiconductor region, separating a) the base region and release region from b) the silicon-containing semiconductor region, the insulative layer with the elongated covered cooling trenches, and the bridging material; forming at least one of field effect transistor channel regions or field effect transistor source/drain regions within the silicon-containing semiconductor region; and providing cooling fluid within the covered elongated cooling trenches.