Patent ID: 9493588
Filing Date: 2016-11-15
CPC Classification: B81C,B82Y,C08F,G03F,H01L

Claim Text:
1. A method for forming a nano pattern comprising: coating a solution of a diblock copolymer comprising a hard segment and a soft segment on a substrate to form a thin film; solvent-annealing the coated thin film to form a polymer thin film on a substrate on which a film to be patterned is formed; irradiating UV to the polymer thin film to remove soft segments; and conducting reactive ion etching of a film to be patterned using the polymer thin film from which the soft segments are removed as a mask; wherein the hard segment comprises at least one repeat unit of the following Chemical Formula 1, and the soft segment comprises at least one (meth)acrylate-based repeat unit of the following Chemical Formula 2, and wherein the soft segments are regularly arranged in cylindrical forms on hard segments, and the cylindrical forms are regularly arranged in a square shape, by the solvent-annealing: in the above Chemical Formula 1, n is an integer of from 5 to 600, R is hydrogen or a methyl group, R is X, X is —Z—R″, Z is a C6-20 arylene group, R″ is a C10-20 linear or branched hydrocarbon, and in the above Chemical Formula 2, m is an integer of from 30 to 1000, R