Patent ID: 6846363
Filing Date: 2005-01-25
Classification: H01J

Abstract:
1. A plasma processing apparatus, comprising: a vacuum chamber arranged to enclose a chamber where a plasma is formed, having a flat surface at its upper portion, having slanted side wall constituted by electrically non-conductive member and having a substantially trapezoidal sectional shape with upper and lower surfaces; a coil wound around said slanted side wall of said vacuum chamber and arranged to have electrical power supplied thereto, for generating said plasma inside a plasma generating portion; an electrically conductive plate member arranged to enclose the chamber between said coil and the side wall and to be electrically floating while said plasma is being generated; and a sample stage arranged below said coil, inside said vacuum chamber, and on which a substrate is mounted, wherein a radius Rd at the lower surface of said trapezoid and a distance H ranging from the sample stage to the upper surface of the trapezoid satisfy a relation of H/Rd≦1.