Patent ID: 9123659
Filing Date: 2015-09-01
Classification: H01L

Abstract:
1. A method for manufacturing a finFET device, comprising steps of: forming a first multiple layer structure and a second multiple layer structure on a substrate in sequence; forming a first sacrificial pattern on said second multiple layer structure; forming a first spacer on a sidewall of said first sacrificial pattern; removing said first sacrificial pattern; etching a portion of said second multiple layer structure by using said first spacer as a hard mask, thereby forming a second sacrificial pattern; forming a second spacer on a sidewall of said second sacrificial pattern; removing said second sacrificial pattern; patterning said first multiple layer structure by using said second spacer as a hard mask; and etching a portion of said substrate by using said patterned first multiple layer structure as a hard mask, thereby forming at least one first fin structure.