Patent ID: 11923250
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method, comprising:
forming a p-doped region in a substrate;
forming an n-doped region in the substrate;
epitaxially growing a first semiconductor layer on the p-doped region;
epitaxially growing a second semiconductor layer different from the first semiconductor layer on the n-doped region;
epitaxially growing a capping layer on the first and second semiconductor layers;
etching the p-doped region, the first semiconductor layer, and a first portion of the capping layer on the p-doped region to form a first fin structure on the substrate;
etching the n-doped region, the second semiconductor layer, and a second portion of the capping layer on the n-doped region to form a second fin structure on the substrate; and
forming an isolation region between the first and second fin structures, wherein a top surface of the isolation region is coplanar with top surfaces of first and second semiconductor layers.