Patent ID: 9613801
Date: 2017-04-04
CPC Classifications: B81C,G03F,H01L

Claim:
1. A method of patterning a layered substrate, comprising: a) forming a layer of a block copolymer; b) performing an annealing treatment of the layer of the block copolymer to affect microphase segregation such that self-assembled domains are formed; and c) thereafter, annealing the layer of the block copolymer to refine or modify the microphase segregation to correct one or more defects in the self-assembled domains, wherein at least the annealing (c) is an absorption based heating method that comprises exposing at least a portion of the layer of the block copolymer to electromagnetic radiation to heat the exposed portion of the layer of the block copolymer to an annealing temperature in a range of 250° C. to 500° C.