Patent ID: 9704722
Date: 2017-07-11
CPC Classifications: B82Y,C08L,G03F,H01L

Claim:
1. A method of forming a pattern, the method comprising: forming a plurality of pillar-shaped guides on a feature layer, the plurality of pillar-shaped guides being regularly arranged; forming a block copolymer layer on the feature layer around the plurality of pillar-shaped guides, the block copolymer layer being made of a polymer blend including a pure block copolymer and a plurality of homopolymers, the pure block copolymer including a first polymer block having a first repeat unit and a second polymer block having a second repeat unit, the plurality of homopolymers including a first homopolymer and a second homopolymer; phase separating the block copolymer layer including, removing the plurality of first domains; and forming a plurality of holes corresponding with the plurality of first domains in the feature layer by etching the feature layer using the plurality of pillar-shaped guides and the second domain as etch masks.