Nonplanar device with thinned lower body portion and method of fabrication
First Claim
1. A semiconductor device comprising:
- a semiconductor body formed on an insulating layer of a substrate, said semiconductor body having a top surface opposite a bottom surface formed on said insulating layer and a pair of laterally opposite sidewalls extending between said top surface and said bottom surface wherein the laterally opposite sidewalls include a tapered portion that extends from the top surface to the bottom surface of the semiconductor body such that the distance between said laterally opposite sidewalls at said top surface is greater than at said bottom surface;
a gate dielectric layer formed on and in direct contact with said top surface and said sidewalls of said semiconductor body from said top surface to said bottom surface;
a gate electrode formed on said gate dielectric layer on said top surface and sidewalls of said semiconductor body; and
a pair of source/drain region formed in said semiconductor body on opposite sides of said gate electrode.
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Abstract
A nonplanar semiconductor device having a semiconductor body formed on an insulating layer of a substrate. The semiconductor body has a top surface opposite a bottom surface formed on the insulating layer and a pair of laterally opposite sidewalls wherein the distance between the laterally opposite sidewalls at the top surface is greater than at the bottom surface. A gate dielectric layer is formed on the top surface of the semiconductor body and on the sidewalls of the semiconductor body. A gate electrode is formed on the gate dielectric layer on the top surface and sidewalls of the semiconductor body. A pair of source/drain regions are formed in the semiconductor body on opposite sides of the gate electrode.
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Citations
10 Claims
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1. A semiconductor device comprising:
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a semiconductor body formed on an insulating layer of a substrate, said semiconductor body having a top surface opposite a bottom surface formed on said insulating layer and a pair of laterally opposite sidewalls extending between said top surface and said bottom surface wherein the laterally opposite sidewalls include a tapered portion that extends from the top surface to the bottom surface of the semiconductor body such that the distance between said laterally opposite sidewalls at said top surface is greater than at said bottom surface; a gate dielectric layer formed on and in direct contact with said top surface and said sidewalls of said semiconductor body from said top surface to said bottom surface; a gate electrode formed on said gate dielectric layer on said top surface and sidewalls of said semiconductor body; and a pair of source/drain region formed in said semiconductor body on opposite sides of said gate electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification