Patent ID: 8808973
Filing Date: 2014-08-19
Classification: B81C,G03F,H01L

Abstract:
1. A method of forming a pattern, comprising: forming a polymer layer on a substrate, the polymer layer including first and second regions, wherein the first region is to be patterned in a later step and the second region is not to be patterned in a later step; selectively irradiating either of the first and second regions with energy rays or irradiating the first and second regions with energy rays under different conditions to cause a difference in surface free energy between the first and second regions; forming a block copolymer layer on the polymer layer, the block copolymer layer including a block copolymer containing first and second block chains different from each other; and causing microphase separation in the block copolymer layer to simultaneously form first and second microphase-separated structures on the first and second regions, respectively, the first microphase-separated structure on the first region comprising a lamellar phase in which a first block chain layer and a second block chain layer are formed perpendicularly to the substrate and alternately arranged, and the second microphase-separated structure on the second region comprising a lamellar phase in which a first block chain layer and a second block chain layer are formed parallel to the substrate and alternately stacked.