Patent ID: 9722024
Date: 2017-08-01
CPC Classifications: H01L

Claim:
1. A method comprising: providing a substrate having a first plurality of fins having first hard masks thereon, a second plurality of fins having second hard masks thereon, the first hard mask being different from the second hard mask; depositing a first fill material between lower portions of the first and second plurality of fins; depositing a third hard mask layer on the first fill material between the first and the second plurality of fins; depositing a second fill material on the third hard mask extending between upper portions of the first and second plurality of fins; selectively removing the second hard masks and the second plurality of fins to form open cavities in the first and second fill material; depositing a third fill material in the opened cavities; and removing the second fill material and the third fill material above the third hard mask to form a fin-cut region.