Patent ID: 8039196

Claim:
A method of forming a pattern on a substrate, comprising: changing the degree of affinity of first regions of an image layer on the substrate with respect to a first component of a block copolymer to be arranged on the image layer to form a first pattern by oxidizing the first regions, the first regions defining a second region between adjacent first regions; arranging the block copolymer on the first and second regions, the block copolymer including the first component and a second component, the first component of the block copolymer being aligned on the first regions, wherein: the first component of the block copolymer has a first affinity for the first regions and the second component of the block copolymer has a second affinity for the first regions, the first affinity being higher than the second affinity, adjacent first regions are covered by the first component, two distinct portions of the second region are covered by the second component, and a third portion of the second region is covered by the first component, the third portion being between the two distinct portions; and selectively removing one of the first component and the second component of the block copolymer to form a second pattern having a pitch that is less than a pitch of a first region and an adjacent second region.