Patent ID: 8399174

Claim:
A method of forming a pattern on a substrate using a block copolymer that includes a first component and a second component, the method comprising: changing a degree of affinity of first regions of an image layer on the substrate by a chemical treatment with respect to the first component such that the first component of the block copolymer has a first affinity with respect to the first regions and the second component of the block copolymer has a second affinity with respect to the first regions, the first component having a higher affinity for the first regions than for second regions of the image layer; arranging the block copolymer on the first regions and the second regions of the image layer such that the first regions have the first component thereon, and the second regions have the first and second components thereon; and removing the first component from the first regions and the second regions such that the second regions are partially covered by the second component, and are partially exposed where the first component is removed from second regions.