Patent ID: 9416447
Filing Date: 2016-08-16
CPC Classification: C23C,G03F,H01L

Claim Text:
1. A method using a block copolymer (BCP) for line density multiplication on a substrate comprising: providing a substrate; depositing on the substrate a sublayer for the BCP; patterning the sublayer; forming on the patterned sublayer a BCP, the BCP comprising first and second BCP components and a functional group at the interfaces of the first and second components, the BCP being directed by the patterned sublayer to self-assemble into said first and second components and interfaces of said functional group between said first and second components; placing the substrate with said self-assembled first and second components and said functional group interfaces in an atomic layer deposition (ALD) chamber; introducing into the ALD chamber a first precursor for an inorganic material, said first precursor being non-reactive with said first and second components and reactive with said functional group; and introducing into the ALD chamber a second precursor for said inorganic material, said second precursor being non-reactive with said first and second components and reactive with said first precursor to form said inorganic material in the interfaces between said first and second components; and wherein the first and second components self-assemble into a pattern of alternating first and second stripes with a natural pitch L