Plasma processing apparatus

Coating apparatus – Gas or vapor deposition – With treating means

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156345, 20429807, 20429833, C23C 1600

Patent

active

055564747

ABSTRACT:
In a plasma processing apparatus, wherein a power application electrode for generating plasma and an electrode opposed thereto are disposed in a process chamber which can be exhausted to attain a predetermined vacuum pressure, an electric power is applied to the power application electrode to generate the plasma from a process gas introduced between the electrodes, and intended plasma processing is effected on a substrate mounted on one of the electrodes in the plasma, the apparatus includes a particle discharge duct which surrounds a periphery and a rear side of the power application electrode and has an opening at a position neighboring to the periphery of the power application electrode, and an exhaust device connected to the duct at a position corresponding to a central portion of the rear side of the power application electrode.

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Abstract of Japanese Patent No. JP6338470, published Dec. 6, 1994.
"Plasma Particulate Contamination Control. II. Self-Cleaning Tool Design," Journal of Vacuum Science and Technology: Part A, vol. 10 (1992) Jul./Aug., No. 4, Pt. I, New York.

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