Patent ID: 9337050
Filing Date: 2016-05-10
CPC Classification: H01L

Claim Text:
1. A method, comprising: forming an inverted, generally T-shaped mandrel feature above a semiconductor substrate, said mandrel feature having a base mandrel structure and a substantially vertically oriented fin mandrel structure located above said base mandrel structure, said base mandrel structure having a lateral width that is greater than a lateral width of said fin mandrel structure wherein said forming said inverted, generally T-shaped mandrel feature above said semiconductor substrate comprises, forming a sidewall spacer adjacent substantially vertically oriented sidewalls of said base mandrel structure and said fin mandrel structure; performing at least one etching process to remove portions of said inverted, generally T-shaped mandrel feature not covered by a sidewall spacer, wherein, after said etching process is completed, said sidewall spacers and remaining portions of said mandrel feature, collectively, define a fin pattern for a plurality of fins to be formed in said substrate; and performing at least one additional process operation to form a plurality of fins in said substrate that correspond to said fin pattern.