Patent ID: 7833901

Claim:
A method of manufacturing a semiconductor device comprising: preparing a semiconductor substrate suitable for receiving a multi-layered wiring arrangement; and forming at least one insulating layer structure, having a metal wiring constitution, to thereby construct said multi-layered wiring arrangement, wherein the formation steps of said insulating layer structure comprise: producing a first SiOCH layer; treating a surface section of said first SiOCH layer to change the surface section of said first SiOCH layer to a second SiOCH layer which features a carbon (C) density lower than that of said first SiOCH layer, a hydrogen (H) density lower than that of said first SiOCH layer, and an oxygen (O) density higher than that of said first SiOCH layer; forming a silicon dioxide (SiO 2 ) layer on said second SiOCH layer; and forming said metal wiring constitution in said first SiOCH layer, said second SiOCH layer and said silicon dioxide (SiO 2 ) layer.