Patent ID: 6410463
Filing Date: 2002-06-25
Classification: B05D,C09D,C23C,H01L

Abstract:
In a method for forming in a reactor a film having a low relative dielectric constant on a semiconductor substrate by plasma reaction, wherein the improvement comprises reducing a relative dielectric constant of the film by lengthening a residence time, Rt, of the reaction gas in the reactor, 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 of the reaction gas (sccm).