Patent ID: 11916079
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A semiconductor structure, comprising:
a semiconductive substrate;
a first fin formed on the semiconductive substrate;
a second fin formed on the semiconductive substrate;
an insulator separating the first fin from the second fin; and
an oxidation region on the semiconductive substrate, wherein the first fin is separated from the semiconductor substrate by the oxidation region, and the second fin is in contact with the semiconductive substrate,
wherein the oxidation region includes a stage under the first fin, and a top surface of the stage is in contact with a lower surface of the first fin, and
wherein the oxidation region includes a recessed region adjacent to the stage, and a bottom of the recessed region is lower than the top surface of the stage.