Patent ID: 9312204
Filing Date: 2016-04-12
CPC Classification: H01L

Claim Text:
1. A method of depositing wires, comprising: forming a plurality of first trenches in a surface of a dielectric layer; forming a plurality of first wires, wherein each of said first wires are formed in each of said first trenches and said first wires are formed of a first material having a first bulk resistivity; forming a plurality of second trenches in said surface of said dielectric layer; and forming a plurality of second wires, wherein each of said second wires are formed in each of said second trenches and said second wires are formed of a second material having a second bulk resistivity, wherein said first bulk resistivity and second bulk resistivity are different; wherein the method further comprises: applying a first hardmask on said dielectric layer prior to forming said plurality of first trenches in said dielectric layer and said plurality of first trenches is formed in said first hardmask and said dielectric layer; removing a portion of said first material from each of said first wires, forming a first recess in each of said plurality of first trenches; and applying a second hardmask into said first recesses prior to forming said plurality of second trenches in said dielectric layer, wherein said second trenches extend through said first hardmask.