Patent ID: 11901457
Assignee: INTEL CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. An integrated circuit structure, comprising:
a semiconductor fin having a protruding fin portion above an isolation structure above a substrate, the protruding fin portion having substantially vertical upper sidewalls and inwardly tapered lower sidewalls, and the protruding fin portion comprising a same semiconductor material from a bottom of the protruding fin portion to a top of the protruding fin portion, and the semiconductor fin further comprises a sub-fin portion on the substrate and within an opening in the isolation structure, the sub-fin portion continuous with the protruding portion, wherein the sub-fin portion has a width greater than a width of the protruding portion where the sub-fin portion meets the protruding portion;
a gate stack over and conformal with the protruding fin portion of the semiconductor fin;
a first source or drain region at a first side of the gate stack; and
a second source or drain region at a second side of the gate stack opposite the first side of the gate stack.