Patent ID: 8771929
Filing Date: 2014-07-08
Classification: B81C,H01L

Abstract:
1. A method of forming a patterned structure comprising: forming an organic planarization layer (OPL) over a substrate; forming a self-aligned assembly of first polymer blocks comprising a first polymeric block component and second polymer blocks comprising a second polymeric block component on said OPL; forming a first pattern of protruding structures including said first polymer blocks by removing said second polymer blocks selective to said first polymer blocks; patterning said OPL employing at least said first polymer blocks as an etch mask, wherein trenches are formed within said patterned OPL; forming spin-on dielectric (SOD) portions by filling said trenches with an SOD material; and forming a second pattern of protruding structures including said SOD portions by removing said patterned OPL selective to said SOD portions.