Patent ID: 9748101
Date: 2017-08-29
CPC Classifications: G03F,H01J,H01L

Claim:
1. A method of treating a substrate using a block copolymer containing a hydrophilic polymer and a hydrophobic polymer, the method comprising: a neutral layer forming step of forming, on the substrate, a neutral layer having an intermediate affinity to the hydrophilic polymer and the hydrophobic polymer; a resist pattern forming step of forming a resist pattern by performing exposure processing on a resist film formed on the neutral layer and then developing the resist film after the exposure processing, wherein the resist pattern is formed of an ArF resist; a resist pattern treatment step of performing a surface treatment on the resist pattern by supplying an organic solvent having a polarity to the resist pattern; a block copolymer coating step of applying the block copolymer onto the neutral layer; a polymer separation step of phase-separating the block copolymer on the neutral layer into the hydrophilic polymer and the hydrophobic polymer; and after the resist pattern forming step and before the resist pattern treatment step, a resist modification processing step of performing modification processing on a surface of the resist pattern by applying ultraviolet light to the resist pattern.