Patent ID: 6352945
Filing Date: 2002-03-05
Classification: B05D,C09D,C23C,H01L,Y10S

Abstract:
A method for forming a silicone polymer insulation film on a semiconductor substrate by plasma treatment, comprising the steps of:introducing a material gas with no additive gas into a reaction chamber for plasma CVD processing wherein a semiconductor substrate is placed, said material gas comprising a silicon-containing hydrocarbon having two alkoxy groups or less or having no alkoxy group; and forming a silicone polymer fin having â€”SR2Oâ€” repeating structural units on the semiconductor substrate by activating a plasma polymerization reaction in the reaction chamber where the material gas is present, while controlling the flow of the material gas to lengthen a residence time, Rt, of the material gas in the reaction chamber until the relative dielectric constant of the silicone polymer film is lower than a predetermined value, wherein 100 msec &lE;Rt, Rt[s]=9.42Ã—107(PrÂ·Ts/PsÂ·Tr)rw2d/F wherein:Pr: reaction chamber pressure (Pa) Ps: standard atmospheric pressure (Pa) Tr: average temperature of the reaction gas (K) Ts: standard temperature (K) rw: radius of the silicon substrate (m) d: space between the silicon substrate and the upper electrode (m) F: total flow volume rate of the reaction gas (sccm).