Patent ID: 8399347

Claim:
A method of forming an integrated circuit device, comprising: forming first spacers on sidewalls of a plurality of mask segments formed over a first sacrificial material, wherein at least one first spacer is formed from a merging of single first spacers formed on sidewalls of adjacent mask segments of the plurality of mask segments; removing the plurality of mask segments, leaving the first spacers over the first sacrificial material, wherein the first spacers pattern portions of the first sacrificial layer for removal; removing the portions of the first sacrificial layer patterned for removal, leaving segments of the first sacrificial material over a conductor; forming second spacers on sidewalls of the segments of the first sacrificial material; removing the segments of the first sacrificial material, leaving the second spacers over the conductor, wherein the second spacers pattern portions of the conductor for removal; and removing the portions of the conductor patterned for removal to form conductive lines over the semiconductor.