Patent ID: 8629560
Filing Date: 2014-01-14
Classification: H01L

Abstract:
1. An integrated circuit structure comprising: a conductive line; a self-aligned dielectric layer on a sidewall of the conductive line, the self-aligned dielectric layer having a carbon concentration gradient decreasing in a direction from the sidewall of the conductive line away from the sidewall of the conductive line; an air-gap horizontally adjacent to the self-aligned dielectric layer; a low-k dielectric layer horizontally adjacent to the air-gap, the air-gap being horizontally disposed between the self-aligned dielectric layer and the low-k dielectric layer, a horizontal plane intersecting the self-aligned dielectric layer, the air-gap, and the low-k dielectric layer; and a dielectric layer on the air-gap and the low-k dielectric layer, a surface of the dielectric layer being parallel with the horizontal plane.