Patent ID: 9566610
Date: 2017-02-14
CPC Classifications: B05D,B81C,H01L

Claim:
1. Method for making patterns on the surface of a substrate by graphoepitaxy comprising: depositing a layer of resin on the surface of the substrate; making patterns in the resin on the surface of the substrate; producing a layer of amorphous carbon on the surface of the patterns in the resin; depositing a layer of random copolymer after producing the layer of amorphous carbon on the surface of the patterns in the resin; grafting the layer of random copolymer onto the patterns in the resin, between the patterns in the resin and onto sides of the patterns in the resin, by annealing; depositing a layer of block copolymer into spaces defined by the patterns in the resin after the grafting.