Patent ID: 9548250
Date: 2017-01-17
CPC Classifications: H01L

Claim:
1. A method of forming a semiconductor device, the method comprising: forming at least one semiconductor fin on an upper surface of a semiconductor substrate, and forming a dielectric layer having at least one sacrificial dielectric portion on an upper surface of the at least one semiconductor fin; forming a first source/drain metal contact stack adjacent a first side of the sacrificial dielectric portion and a second source/drain metal contact stack adjacent a second side of the sacrificial dielectric portion; and after forming the first and second source/drain metal contact stacks, replacing the sacrificial dielectric portion with a metal gate stack formed between opposing spacers, the opposing spacers including a first spacer formed against a first inner sidewall of a first contact trench among an opposing pair of contact trenches, and a second spacer formed against a second inner wall of an opposing second contact trench among the opposing pair of contact trenches, wherein forming the first and second source/drain metal contact stacks comprises: