Patent ID: 11929413
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 15:
16. A semiconductor device structure, comprising:
a first channel structure and a second channel structure over a substrate;
a first gate stack over the first channel structure, wherein the first gate stack has a first width; and
a second gate stack over the second channel structure, wherein the first gate stack has a first work function layer, the second gate stack has a second work function layer, the first work function layer and the second work function layer are made of a same material, the second gate stack has a first protruding portion and a second protruding portion, each of the first protruding portion and the second protruding portion extends away from the second channel structure, the first protruding portion and the second protruding portion are spaced apart from each other by an insulating structure, the first protruding portion of the second gate stack has a second width, and half of the first width is greater than the second width.