Patent ID: 6781235
Filing Date: 2004-08-24
Classification: H01L,Y10S

Abstract:
An interconnect structure comprising:a first dielectric layer upon a substrate assembly, said first dielectric layer defining a first contact corridor configured to provide electrical interconnection at a first level of the interconnect structure; a second dielectric layer upon said first dielectric layer and having an upper surface, said second dielectric layer defining a first trench extending substantially parallel to an upper surface of the second dielectric layer, said first trench extending laterally through at least a portion of the second dielectric layer away from the first contact corridor, the first trench configured to provide electrical interconnection at a second level of the interconnect structure; and a first metal layer extending from a top surface above the second dielectric layer through said first trench an terminating at a bottom surface thereof within said first contact corridor, said first metal layer substantially filling said first trench and said first contact corridor, said first metal layer having a first portion thereof extending from the first trench and above the second dielectric layer, the first portion configured to provide electrical interconnection at a third level of the interconnect structure, said first metal layer having a substantially constant electrical resistance from the top surface thereof to the bottom surface thereof within said first contact corridor.