Patent ID: 7943452

Claim:
A method of forming a gate conductor structure in a semiconductor device, comprising: forming a lithographically patterned mask layer over an upper surface of a gate conductor structure, wherein said lithographically patterned mask layer comprises a mask opening; applying a layer of a block copolymer over the lithographically patterned mask layer, wherein said block copolymer comprises a first polymeric block component and a second polymeric block component; annealing the layer said block copolymer to form a polymer block pattern inside said mask opening, and wherein said polymer block pattern comprises said second polymeric block component embedded in a polymeric matrix that comprises said first polymeric block component; selectively removing said second polymeric block component relative to said first polymeric block component to form a matrix opening in said polymeric matrix within said mask opening; and patterning said gate conductor structure using said matrix opening in said polymeric matrix.