Patent ID: 9379010
Filing Date: 2016-06-28
CPC Classification: H01L

Claim Text:
1. A method of forming a microelectronic structure, comprising: forming a dielectric layer on a substrate; forming a first hardmask layer on the dielectric layer; forming a plurality of backbone structures on the first hardmask layer; forming side spacers adjacent sides of each of the plurality of backbone structures; etching a portion of the first hardmask layer and a portion of the dielectric layer between adjacent side spacers between at least two adjacent backbone structures to form at least one first trench, without removing any of the plurality of backbone structures; depositing a sacrificial material in the at least one first trench; removing at least one backbone structure and etching a portion of the first hardmask layer and the dielectric layer which resided below the at least one backbone structure to form at least one second trench, without removing the sacrificial material in the at least one first trench; depositing a fill material in the at least one second trench; removing the side spacers; removing the sacrificial material from the at least one first trench; removing the fill material from the at least one second trench; and depositing a conductive material in the at least one first trench and the at least one second trench.