Patent ID: 8969207
Filing Date: 2015-03-03
Classification: H01L

Abstract:
1. A method, comprising: forming a patterned hard mask layer comprised of a plurality of discrete openings above a structure, wherein said patterned hard mask layer is comprised of a plurality of intersecting line-type features; forming a first patterned etch mask above said patterned hard mask layer that exposes at least one, but not all, of said plurality of discrete openings; performing a first etching process through said first patterned etch mask layer and said at least one exposed opening in said patterned hard mask layer to define an opening in a layer of insulating material formed above said structure; after defining said opening in said layer of insulating material, forming a second patterned etch mask above said patterned hard mask layer that exposes at least one, but not all, of said plurality of discrete openings; and performing at least one second etching process through said second patterned etch mask to define a trench in said layer of insulating material and an opening in said structure.