Patent ID: 6123993
Filing Date: 2000-09-26
Classification: B05D,C23C

Abstract:
A method of forming a low dielectric constant parylene film on a substrate, comprising:providing a liquid-phase precursor comprising a parylene source reagent as a neat liquid or in a solvent solution of the reagent;flash vaporizing the liquid-phase precursor in a flash vaporizer/pyrolytic cracking unit to produce a flash vaporized precursor;pyrolytically cracking the flash vaporized precursor in situ in the flash vaporizer/cracking unit to produce a precursor vapor which includes a parylene source monomer and/or reactive radical species; andcontacting the precursor vapor with the substrate under conditions producing condensation of the parylene source monomer and/or reactive radical species to form the polymeric film of parylene on the substrate.