Patent ID: 9502541
Filing Date: 2016-11-22
CPC Classification: H01L

Claim Text:
1. A method of forming a fin field effect transistor (FinFET) device, the method comprising: forming a shallow trench isolation (STI) region over a substrate, the STI region having a first fin extending from the substrate, the first fin being a first semiconductor material, sidewalls of an upper portion of the first fin being exposed; epitaxially growing a second semiconductor material along sidewalls of the upper portion of the first fin; and selectively etching the upper portion of the first fin to form second fins from the second semiconductor material, the second fins spaced apart from each other by a width of the first fin, wherein after selectively etching the upper portion of the first fin, upper surfaces of the STI region on an opposing side of the second fins from remaining portions of the first fin are exposed.