Patent ID: 9190288
Filing Date: 2015-11-17
Classification: B81C,B82Y,G11B,H01L

Abstract:
1. A pattern forming method comprising: forming, on a substrate, a bond between a first bonding group of a hydrophilic first homopolymer and a second bonding group of a hydrophobic second homopolymer to produce a block copolymer having the first homopolymer and the second homopolymer bonded together, the bond being capable of breaking when applying at least one stimulation selected from the group consisting of an acid, a base, light and heat; performing heat treatment to cause microphase-separation of the block copolymer into a hydrophilic domain comprising the first homopolymer and a hydrophobic domain comprising the second homopolymer, the hydrophilic domain and the hydrophobic domain being arranged side by side; and applying the at least one stimulation to the microphase-separated block copolymer to selectively break the bond.