Patent ID: 11961897
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A method of fabricating a semiconductor device, comprising:
forming a first fin structure that protrudes vertically upward from a substrate;
after the first fin structure is formed, forming a second fin structure that protrudes vertically upward from the substrate, wherein the second fin structure is spaced apart from the first fin structure, wherein the first fin structure and the second fin structure have different material compositions, and wherein one of the first fin structure and the second fin structure has a non-semiconductor material composition;
performing one or more etching processes, wherein upper corners of the first fin structure and the second fin structure are rounded by the one or more etching processes;
forming, after the performing of the one or more etching processes, a dummy gate structure over the first fin structure and the second fin structure; and
replacing the dummy gate structure with a metal-containing gate structure.