Patent ID: 9564367
Date: 2017-02-07
CPC Classifications: H01L

Claim:
1. A method of forming first and second FinFET devices in and above a semiconducting substrate, comprising: forming a first patterned mask layer above said substrate that exposes a first region of said substrate where said first FinFET device will be formed and masks a second region of said substrate where said second FinFET device will be formed; with said first patterned mask layer in position, forming a first fin for said first FinFET device, wherein said first fin is comprised of a first semiconductor material that is different from the material of said semiconducting substrate; removing said first patterned masking layer; after removing said first patterned masking layer, forming a second patterned masking layer that masks said first region of said substrate and exposes said second region of said substrate where said second FinFET device will be formed; and after forming said first fin, and with said second patterned masking layer in position, forming a second fin for said second FinFET device, wherein said second fin is comprised of a second semiconductor material that is (a) in contact with said material of said semiconducting substrate, (b) different from the material of said semiconducting substrate and (c) different from said first semiconductor material.