Plasma treatment apparatus

Details Plasma treatment apparatus Plasma treatment apparatus

1997-06-30

1998-09-01

Breneman, R. Bruce

Coating apparatus

With indicating, testing, inspecting, or measuring means

118723MR, 118723MH, 156345, 20429816, 20429837, C23C 1600

Patent

active

058006206

ABSTRACT:
A method and apparatus for generating plasmas adapted for chemical vapor deposition, etching and other operations, and in particular to the deposition of large-area diamond films, wherein a chamber defined by sidewalls surrounding a longitudinal axis is encircled by an axially-extending array of current-carrying conductors that are substantially transverse to the longitudinal axis of the chamber, and a gaseous material is provided in the chamber. A high-frequency current is produced in the conductors to magnetically induce ionization of the gaseous material in the chamber and form a plasma sheath that surrounds and extends along the longitudinal axis and conforms to the sidewalls of the chamber. A work surface extending in the direction of the longitudinal axis of the chamber is positioned adjacent a sidewall, exposed to the plasma sheath and treated by the plasma. Preferably, the ratio of the width to the height of the chamber is 10:1 or larger so that the chamber includes a large area planar surface adjacent the plasma sheath and adjacent to which a large area substrate or a plurality of substrates is arranged, whereby large area treatment, such as diamond deposition, can be performed.

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