Patent ID: 9698251
Date: 2017-07-04
CPC Classifications: H01L

Claim:
1. A finfet reveal process, comprising: forming a fin on a substrate; sequentially depositing first and second insulation layers over the fin and the substrate; forming a dummy gate over the second insulation layer; disposing, on either side of the dummy gate, spacers exposing the dummy gate; exposing opposite ends of the fin for insulated contact growth thereon to thereby re-form the first and second insulation layers into a pillar, the exposing comprising recessing the second insulation layer about the opposite ends of the fin to a target height and stripping the first insulation layer about the opposite ends of the fin and portions of the opposite ends of the fin to the target height; and removing the dummy gate from between the spacers and sequentially removing the second insulation layer and then the first insulation layer from the pillar such that remainders of the pillar and the spacers form two-part spacers.