Patent ID: 9557639
Date: 2017-01-31
CPC Classifications: B81C,B82B,B82Y,G03F,Y10T

Claim:
1. A method of patterning a block copolymer layer, the method comprising: providing a substrate with a guide pattern formed on a surface thereof; forming a block copolymer layer on the substrate with the guide pattern, the block copolymer layer comprising a block copolymer; and directing self-assembly of the block copolymer on the substrate according to the guide pattern to form n/2 discrete domains, wherein the guide pattern includes a block copolymer patterning area having a 90-degree bending portion, an outer apex and an inner apex of the 90-degree bending portion are each rounded, the outer apex has a first curvature radius r the inner apex has a second curvature radius r a width of the block copolymer patterning area W, the first curvature radius r wherein n is an even number and represents a number of interfaces of the discrete domains, wherein the guide pattern comprises at least two bend pattern elements arranged parallel to one another, at least two jog pattern elements arranged parallel to one another, or a combination thereof, wherein the block copolymer patterning area is defined by opposite side walls formed by the pattern elements, wherein the width (W) of the block copolymer patterning area is a distance between the opposite side walls in a straight line portion of the guide pattern, and wherein the discrete domains are formed in the block copolymer patterning area.