Patent ID: 7420279
Filing Date: 2008-09-02
Classification: C23C,H01L

Abstract:
1. A semiconductor device having an interlayer insulating film formed on or over a semiconductor substrate, a wiring trench formed in the interlayer insulating film, an opening which is formed in the interlayer insulating film and which reaches a lower layer metal wiring conductor from the bottom portion of the wiring trench, and a metal wiring conductor and metal plug which are formed by filling the wiring trench and the opening with Cu containing metal via a baffler metal, wherein the interlayer insulating film includes an insulating film comprising a carbon containing silicon oxide (SiOCH) film which has Si—CH2 bond in the carbon containing silicon oxide film; wherein the proportion of Si—CH2 bond (1360 cm−1) to Si--CH3 bond (1270 cm−1) in the insulating film is in a range from 0.03 to 0.05 measured as a peak height ratio of FTIR spectrum.