Patent ID: 6063236
Filing Date: 2000-05-16
Classification: H01J

Abstract:
In a vacuum processing system for generating plasma in a vacuum vessel and treating an object with the generated plasma, said vacuum processing system comprising:plasma arrival prevention magnet means for forming a magnetic field along an inner face of the vacuum vessel to prevent the plasma from arriving at the inner face of the vacuum vessel;and move means for moving said plasma arrival prevention magnet means relatively to the vacuum vessel so as to compensate vector unevenness of said plasma arrival prevention magnet means in a direction of the inner face of the vacuum vessel for uniformly depositing a thin film on the inner face, a method of removing the thin film deposited on the inner face of the vacuum vessel comprising the steps of:treating the object; andetching and removing the thin film deposited on the inner face of the vacuum vessel, wherein said plasma arrival prevention magnet means is moved so as to compensate vector unevenness of said plasma arrival prevention magnet means in the inner face direction of the vacuum vessel for uniform etching on the inner face.