Patent ID: 6211622
Filing Date: 2001-04-03
Classification: H01J

Abstract:
A plasma processing equipment comprising:a discharge vessel in which a discharge chamber for generating a discharge plasma is formed;a vacuum vessel in which a process chamber for generating an excited plasma by exciting a process gas by virtue of electrons which are extracted from said discharge plasma is formed;a partition in which a compartment is formed, said compartment being communicated with said discharge chamber and protruding into said process chamber, said partition having a plurality of orifices for extracting said electrons from said discharge plasma toward said process chamber, said orifices being formed such that said electrons are emitted through said orifices along a direction parallel to a processed surface of an object which is to be processed by said excited plasma; anda plurality of accelerating electrodes arranged in said process chamber to extract said electrons through said orifices, wherein a number and an arrangement of said accelerating electrodes are set such that a density distribution of said excited plasma has an optimal state for processing said object.