Patent ID: 8680424
Filing Date: 2014-03-25
Classification: C23C,H01J,H05H

Abstract:
1. A microwave plasma processing device comprising: fixing means for fixing a substrate as a processing target on a central axis in a plasma processing chamber; exhausting means for depressurizing an inside and outside of the substrate from a mouth portion; a metal processing gas supply member which is present in the substrate and forms a reentrant cylindrical resonating system along with the plasma processing chamber; and microwave introducing means forming a predetermined node of an electric field intensity distribution with a node of a low electric field intensity distribution, the microwave introducing means being present at a side of the plasma processing chamber and at a height that the node of the low electric field intensity distribution is present, and introducing a microwave into the plasma processing chamber from the side of the plasma processing chamber against the node of the low electric field intensity distribution to perform processing, wherein a microwave sealing member is provided at a substrate-holding portion of the fixing means and directly below the fixing means such that the microwave sealing member covers the exhausting means, and a connection position of the microwave introducing means is located at the predetermined node which shows the low electric field intensity formed along with the processing gas supply member by introducing the microwave, a distance D between the microwave sealing member and a surface of the fixing means is 0 to 55 mm, and a distance L between the microwave sealing member and an end portion of the processing gas supply member satisfies when 0≦D≦20, when 20≦D≦35, and when 35≦D≦55, where n is an integer, λ is a wavelength of the microwave, and α is a fluctuation band in consideration of an influence and the like of the substrate on an electric field and is ±10 mm.