Magnetic neutral line discharged plasma type surface cleaning ap

Adhesive bonding and miscellaneous chemical manufacture – Differential fluid etching apparatus – With microwave gas energizing means

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Details

118723E, 118723I, 20429837, 438905, 134 11, H05H 100

Patent

active

057627509

ABSTRACT:
A surface cleaning apparatus using magnetic neutral line discharged plasma for the purpose of inner-wall surface cleaning of a vacuum vessel assembled in a semiconductor manufacturing machine, which comprises electromagnetic coils for producing a closed magnetic neutral line that is formed by circularly connecting points of zero-intensity magnetic field, rf electric field generator for continuously generating plasma by applying a rf electric field along the magnetic neutral line and a controller for controlling the size and position of the closed magnetic neutral line and the kind, temperature and density of the plasma being generated.

REFERENCES:
patent: 5514246 (1996-05-01), Blalock

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