Patent ID: 8921225
Filing Date: 2014-12-30
Classification: H01L

Abstract:
1. A method comprising: providing a hardmask on a substrate; providing a plurality of first mandrels on the hardmask; providing a first spacer on each side of each of the first mandrels; providing a plurality of first non-mandrel regions of the substrate being separated from the first mandrels and between two of the first spacers, each of the first mandrels, first non-mandrel regions, and first spacers having a width equal to a distance; and providing a second mandrel having a width of at least twice the distance and being separated from one of the first non-mandrel regions by a second spacer and/or providing a second non-mandrel region having a width of at least twice the distance and being adjacent to at least one of the first spacers or a third spacer of a third mandrel and separated from one or more block masks.