Patent ID: 6746825
Filing Date: 2004-06-08
Classification: B82Y,G03F,Y10S,Y10T

Abstract:
A method of forming copolymer structures, comprising:(a) providing a substrate with an imaging layer thereon that will respond to exposure to selected wavelengths to change the wettability of the exposed material of the imaging layer to the components of a selected block copolymer; (b) exposing the imaging layer to two or more beams of radiation within the selected wavelengths to form interference patterns having a period of 100 nanometers or less at the imaging layer to change the wettability of the imaging layer in accordance with the interference patterns in the exposed imaging layer; (c) depositing a layer of the selected copolymer onto the exposed imaging layer; and (d) annealing the copolymer layer on the substrate to separate the components of the copolymer in accordance with the pattern of wettability for the components of the copolymer in the underlying imaging layer to replicate the pattern of the imaging layer in the copolymer layer.