Patent ID: 6892669
Filing Date: 2005-05-17
Classification: C23C,H01L

Abstract:
1. A CVD apparatus comprising: a vacuum vessel having an inside in which plasma is produced to generate active species, and film deposition is performed on a substrate by using the active species and a reactive gas; an electrically-conductive partitioning wall section formed in the vacuum vessel for separating the inside thereof into two chambers; a first one of the two chambers is formed as a plasma-generating space and contains a radio-frequency electrode; a second one of the two chambers is formed as a film deposition process space and contains a substrate support mechanism for mounting a substrate; the partitioning wall section includes a plurality of through-holes to allow communication between the plasma-generating space and the film deposition process space; the partitioning wall section includes an interior space separated from the plasma-generating space and communicating with the film deposition process space through a plurality of diffusion holes; means for delivering into the interior space a reactive gas supplied from outside the vacuum vessel, whereby the reactive gas thus supplied into the interior space is fed to the film deposition process space through the plurality of diffusion holes; means for delivering a first gas to the plasma-generating space so that it passes through the through-holes at velocity u such that an equation uL/D<1 is satisfied where L represents an effective length of the through-holes and D represents an inter-diffusion coefficient between the first gas and the reactive gas; and means for supplying an RF power to the radio-frequency electrode for generating a plasma discharge in the plasma-generating space, by which the active species produced in the plasma-generating space are fed into the film deposition process space via the plurality of through-holes formed in the partitioning wall section.