Patent ID: 8889562
Filing Date: 2014-11-18
Classification: H01B,H01L

Abstract:
1. A patterning method comprising: forming a first mask layer on a substrate; performing at least two dopant implantation processes using at least two additional mask layers to form, within said first mask layer, a doped region that comprises said dopant and that laterally surrounds multiple undoped regions, each undoped region having a shape with four sides and being laterally surrounded by said doped region such that each of said four sides is immediately adjacent to said doped region, said performing of said at least two dopant implantation processes using said at least two additional mask layers comprising: selectively removing said doped region to form a mask pattern above said substrate; and, performing an etch process to transfer said mask pattern into said substrate to form multiple discrete features having said shape in said substrate, said dopant comprising phosphorous.