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US08809139B2 Fin-last FinFET and methods of forming same 有权
Fin-Fin FinFET及其形成方法

Fin-last FinFET and methods of forming same
Abstract:
Embodiments of the present disclosure are a FinFET device, and methods of forming a FinFET device. An embodiment is a method for forming a FinFET device, the method comprising forming a semiconductor strip over a semiconductor substrate, wherein the semiconductor strip is disposed in a dielectric layer, forming a gate over the semiconductor strip and the dielectric layer, and forming a first recess and a second recess in the semiconductor strip, wherein the first recess is on an opposite side of the gate from the second recess. The method further comprises forming a source region in the first recess and a drain region in the second recess, and recessing the dielectric layer, wherein a first portion of the semiconductor strip extends above a top surface of the dielectric layer forming a semiconductor fin.
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