Patent ID: 9147696
Filing Date: 2015-09-29
Classification: H01L

Abstract:
1. A method comprising: obtaining an intermediate semiconductor device, comprising: depositing a hard mask layer over the intermediate semiconductor device; etching the hard mask layer to form at least one fin hard mask; depositing at least one sacrificial gate structure over the at least one fin hard mask and at least a portion of the substrate; etching the intermediate semiconductor device to remove a portion of the at least one fin hard mask using the at least one sacrificial gate structure as a mask; applying a first spacer to the at least one sacrificial gate structure; forming at least one pFET region in the substrate; applying a second spacer to the at least one sacrificial gate structure over the first spacer; forming at least one nFET region in the substrate; depositing a flowable oxide over the intermediate semiconductor device; removing the at least one sacrificial gate structure to form at least one opening; etching over the at least one fin hard mask to form at least one fin in a bottom of the opening; and removing the at least one fin hard mask.