Patent ID: 9190285
Filing Date: 2015-11-17
Classification: H01L

Abstract:
1. A method for making a semiconductor structure comprising: providing a hardmask layer on an uppermost surface of a substrate; forming a material stack on the hardmask layer, wherein the material stack includes at least one pattern transfer layer and a template layer present on the pattern transfer layer; forming at least one opening in the template layer; forming a patterned structure in the opening, the patterned structure comprising a first self-assembled region and a second self-assembled region; removing the second self-assembled region to provide a first pattern, wherein the first pattern is defined by the first self-assembled region; transferring the first pattern into the at least one pattern transfer layer to provide a second pattern; removing the first self-assembled region; and removing residues of the first self-assembled region, remaining portions of the template layer, remaining portions of the at least one pattern transfer layer from the substrate by performing a chemical mechanical polishing (CMP) process.