Patent ID: 11923457
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A method comprising:
forming a fin structure over a substrate, wherein the fin structure has a top surface covered by a hard mask;
forming a first gate structure on the hard mask;
forming a sidewall spacer on the first gate structure;
removing a portion of the sidewall spacer to expose a first portion of the hard mask;
removing the first portion of the hard mask to expose a first portion of the top surface of the fin structure;
forming a source/drain feature on the exposed first portion of the top surface of the fin structure;
removing the first gate structure to expose a second portion of the hard mask;
removing the second portion of the hard mask to expose a second portion of the top surface of the fin structure; and
forming a second gate structure on the exposed second portion of the top surface of the fin structure.