Patent ID: 8946086
Filing Date: 2015-02-03
Classification: H01L

Abstract:
1. A method of forming a pattern, comprising: forming a first material over and in physical contact with an underlying material selected from the group consisting of silicon nitride, metals, metal comprising compositions, conductively doped silicon and conductively doped germanium; forming a crosshatch pattern over the first material; regions of the first material being exposed within first openings in the crosshatch pattern; narrowing the first openings in the crosshatch pattern; extending the first openings through the first material; after the extending, further patterning the crosshatch pattern to comprise segments; forming masking material between the segments, the masking material filling the first openings; removing the segments to form second openings extending through the masking material to the first material; extending the second openings through the first material; and removing the masking material to leave a repeating pattern comprising the second openings and the narrowed first openings.