Patent ID: 11972982
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A method for manufacturing a semiconductor device, the method comprising:
forming a fin structure by performing a first etching operation on a semiconductor layer;
performing a first annealing operation on the fin structure;
after the first annealing operation, performing a second etching operation on the fin structure to cut the fin structure into multiple fin structures;
between the first annealing operation and the second etching operation:
forming a liner semiconductor layer over the fin structure;
performing a first wet etching operation on the fin structure; and
forming a first cap semiconductor layer over the fin structure;

after the second etching operation, performing a second annealing operation on the multiple fin structures; and
after the second annealing operation, forming an isolation insulating layer such that an upper portion of the multiple fin structures protrudes from the isolation insulating layer.