Patent ID: 9570389
Date: 2017-02-14
CPC Classifications: H01L

Claim:
1. An interconnect structure comprising: a dielectric layer, said dielectric layer comprising a dielectric layer top surface, said dielectric layer being shaped with one or more trenches extending therein from said dielectric layer top surface, each of said one or more trenches comprising a trench bottom surface and at least one trench side surface; one or more interconnect lines, each of said one or more interconnect lines comprising an interconnect bottom surface, an interconnect top surface, and at least one interconnect side surface wherein said at least one interconnect side surface has had an effective quantity of material removed therefrom so as to be free of sidewall voids; one or more first liner layers, said one or more first liner layers being made of a first liner material; each of said one or more interconnect lines being positioned within one of said one or more trenches; at least one of said one or more first liner layers being affixed between said trench bottom surface and said interconnect bottom surface; one or more second liner layers, said one or more second liner layers being made of a second liner material; at least one of said one or more second liner layers being affixed directly to said interconnect top surface and to at least one of said at least one interconnect side surface; and at least one air gap, said at least one air gap being positioned between said at least one trench side surface and said at least one interconnect side surface.