Patent ID: 11894276
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 16:
17. An integrated circuit, comprising:
a substrate having a first region and a second region;
a first gate-all-around (GAA) device located in the first region, the first GAA device including:
a first channel member extending longitudinally in a first direction, and
a first gate structure wrapping a channel region of the first channel member, the first gate structure including a first interfacial layer; and

a second GAA device located in the second region, the second GAA device including:
a second channel member extending longitudinally in the first direction, and
a second gate structure wrapping a channel region of the second channel member, the second gate structure including a second interfacial layer, the second interfacial layer having a first portion adjacent the second channel member and a second portion over the first portion, the first portion having a weight density less than that of the second portion.