Patent ID: 11869973
Assignee: INTEL CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 11:
12. A nanowire transistor structure comprising:
a first region of semiconductor material;
a second region of semiconductor material;
one or more nanowires having a body between a first end portion in contact with the first region and a second end portion in contact with the second region;
a subfin beneath the body of the one or more nanowires; and
a gate structure around the body of the one or more nanowires, and the gate structure on a top and along sidewalls of the subfin, the gate structure comprising a gate electrode and a gate dielectric between the gate electrode and the body, and the gate structure including a gate spacer;
wherein the body of the one or more nanowires has a first cross-sectional shape and the first end portion has a second cross-sectional shape, wherein the first cross-sectional shape is more rounded than the second cross-sectional shape, and the first cross-sectional shape has a smaller circumference compared to the second cross-sectional shape, and wherein the gate spacer extends vertically beneath the second cross-sectional shape.