Patent ID: 9184047
Filing Date: 2015-11-10
Classification: B05D,H01L

Abstract:
1. A method of curing a low-k dielectric film, comprising: disposing a substrate, having said low-k dielectric film thereon, on a substrate holder in a curing system, the substrate holder having a heating element therein; heating the substrate by controlling said heating element; exposing said low-k dielectric film to infrared (IR) radiation to facilitate a first curing mechanism within the dielectric film; exposing said low-k dielectric film to ultraviolet (UV) radiation to facilitate a second curing mechanism that is different from the first curing mechanism within the low-k dielectric film; and curing said low-k dielectric film by varying delivery of said IR radiation and said UV radiation to the low-k dielectric film to facilitate said first and second curing mechanism at different stages of curing such that mechanical properties of the low-k dielectric film are improved while maintaining a dielectric constant of the low-k film less than a dielectric constant of silicon dioxide.