Patent ID: 9034766
Filing Date: 2015-05-19
Classification: H01L

Abstract:
1. A pattern formation method comprising: forming a first guide layer on an underlayer, the first guide layer having a plurality of first openings exposing a surface of the underlayer, and the plurality of first openings being arranged in a first direction; forming a second guide layer on the underlayer and on the first guide layer, the second guide layer extending in the first direction, the second guide layer being sandwiched by a first opening portion and a second opening portion, and the second guide layer dividing each of the plurality of first openings into the first opening portion and the second opening portion; forming a block copolymer layer in each of the first opening portion and the second opening portion; forming a first layer and a second layer surrounded by the first layer in each of the first opening portion and the second opening portion by phase-separating the block copolymer layer; and removing the second layer.