Patent ID: 6383955
Filing Date: 2002-05-07
Classification: B05D,C09D,C23C,H01L

Abstract:
A method for forming a silicone polymer insulation film on a semiconductor substrate by plasma treatment, comprising the steps of:providing a reaction gas consisting of a source gas and an additive gas to a reaction chamber for plasma CVD processing wherein a semiconductor substrate is placed, said source gas comprising a silicon-containing hydrocarbon compound having formula Si&agr;O&agr;âˆ’1R2&agr;âˆ’&bgr;+2(OCnH2n+1)&bgr; wherein &agr; is an integer of 1-3, &bgr; is 1 or 2, n is an integer of 1-3, and R is C1-6 hydrocarbon attached to Si, said additive gas being composed of an inert or inactive gas and optionally a reducing gas; heating the substrate to a point near or higher than the heat resistance temperature required for the film; and activating plasma polymerization reaction in the reaction chamber where the reaction gas is present, to form a silicone polymer film on the semiconductor substrate, while controlling the flow of the reaction gas to lengthen a residence time, Rt, of the reaction gas in the reaction chamber, 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).