Nonplanar device with stress incorporation layer and method of fabrication
First Claim
Patent Images
1. A method of forming a semiconductor device comprising:
- forming a semiconductor body having a top surface and laterally opposite sidewalls on a substrate;
forming a gate dielectric on said top surface of said semiconductor body and on said laterally opposite sidewalls of said semiconductor body;
forming a gate electrode on said gate dielectric and adjacent to said gate dielectric on said laterally opposite sidewalls of said semiconductor body; and
forming a thin film adjacent to said semiconductor body and beneath said semiconductor body wherein said thin film produces a stress in said semiconductor body.
0 Assignments
0 Petitions
Accused Products
Abstract
A semiconductor device comprising a semiconductor body having a top surface and laterally opposite sidewalls is formed on an insulating substrate. A gate dielectric layer is formed on the top surface of the semiconductor body and on the laterally opposite sidewalls of the semiconductor body. A gate electrode is formed on the gate dielectric on the top surface of the semiconductor body and is formed adjacent to the gate dielectric on the laterally opposite sidewalls of the semiconductor body. A thin film is then formed adjacent to the semiconductor body wherein the thin film produces a stress in the semiconductor body.
238 Citations
30 Claims
-
1. A method of forming a semiconductor device comprising:
-
forming a semiconductor body having a top surface and laterally opposite sidewalls on a substrate; forming a gate dielectric on said top surface of said semiconductor body and on said laterally opposite sidewalls of said semiconductor body; forming a gate electrode on said gate dielectric and adjacent to said gate dielectric on said laterally opposite sidewalls of said semiconductor body; and forming a thin film adjacent to said semiconductor body and beneath said semiconductor body wherein said thin film produces a stress in said semiconductor body. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method of forming a semiconductor device comprising:
-
forming a semiconductor body having a top surface and laterally opposite sidewalls on a substrate; forming a gate dielectric on said laterally opposite sidewalls of said semiconductor body; forming a gate electrode over said top surface of said semiconductor body and adjacent to said gate dielectric on said laterally opposite sidewalls of said semiconductor body; and forming a thin film adjacent to said semiconductor body and beneath said semiconductor body wherein said thin film produces a stress in said semiconductor body. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. A method of forming a semiconductor device comprising:
-
forming a semiconductor body having a top surface and laterally opposite sidewalls on a substrate; forming a gate dielectric on said laterally opposite sidewalls of said semiconductor body; forming a gate electrode over said top surface of said semiconductor body and adjacent to said gate dielectric on said laterally opposite sidewalls of said semiconductor body; and removing a portion of said substrate underneath said semiconductor body and beneath said gate electrode to expose a portion of said semiconductor body; and forming an insulating film beneath said exposed portion, said film to produce stress in said semiconductor body beneath said gate electrode. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
-
-
23. A method of forming a semiconductor device comprising:
-
patterning a monocrystalline silicon film formed on a substrate into a silicon body having a top surface opposite a bottom surface formed on said substrate, and a first and second laterally opposite sidewalls; forming a gate dielectric layer on said top surface of said silicon body and on said sidewalls of said silicon body; depositing a gate material over said silicon body and over said substrate; patterning said gate material to form a gate electrode on said gate dielectric layer on said top surface of said silicon body and adjacent to said gate dielectric on said sidewalls of said silicon body, said gate electrode having laterally opposite sidewalls which run perpendicular to said laterally opposite sidewalls of said silicon body; forming a pair of source/drains regions in said silicon body on opposite sides of said laterally opposite sidewalls of said gate electrode, wherein the region between said source/drain regions in said silicon body forms a channel region; removing a portion of said substrate from underneath a portion of said channel region of said silicon body and beneath a portion of said source and drain regions of said silicon body; and forming an insulating film beneath said exposed portion of said silicon body beneath said gate electrode and beneath said exposed portion of said source and drain regions beneath said gate electrode, said film to produce stress in said silicon body. - View Dependent Claims (24, 25)
-
-
26. A method of forming a semiconductor device comprising:
-
patterning a monocrystalline silicon film formed on a substrate into a silicon body having a top surface opposite a bottom surface formed on said substrate, and a first and second laterally opposite sidewalls; forming a gate dielectric layer on said sidewalls of said silicon body; depositing a gate material over said silicon body and over said substrate; patterning said gate material to form a gate electrode adjacent to said gate dielectric on said sidewalls of said silicon body, said gate electrode having laterally opposite sidewalls which run perpendicular to said laterally opposite sidewalls of said silicon body; forming a pair of source/drains regions in said silicon body on opposite sides of said laterally opposite sidewalls of said gate electrode, wherein the region between said source/drain regions in said silicon body forms a channel region; removing a portion of said substrate from underneath a portion of said channel region of said silicon body and beneath a portion of said source and drain regions of said silicon body; and forming an insulating film beneath said exposed portion of said silicon body beneath said gate electrode and beneath said exposed portion of said source and drain regions beneath said gate electrode, said film to produce stress in said silicon body. - View Dependent Claims (27, 28, 29, 30)
-
Specification