Patent ID: 8563421
Filing Date: 2013-10-22
Classification: C23C,H01L

Abstract:
1. A method of fabricating a semiconductor device, the method comprising: providing a semiconductor substrate on which a plurality of wirings are formed adjacent to one another; and forming a dielectric layer filling an upper portion of a space between at least one pair of the adjacent wirings to form air gaps by a thermal chemical vapor deposition method, wherein the dielectric layer is formed directly on each sidewall of the at least one pair of the plurality of adjacent wirings, directly on an upper surface of the semiconductor substrate located between the at least one pair of the adjacent wirings and directly on top surfaces of the at least one pair of the adjacent wirings and wherein the dielectric layer completely fills the upper portion of the space between the at least one pair of the adjacent wirings to thereby provide closed air gaps between the at least one pair of the adjacent wirings.