Patent ID: 6736931
Filing Date: 2004-05-18
Classification: B01D,C23C,H01F,H01J,H01L

Abstract:
A plasma chamber enclosure structure for use in an RF plasma reactor which includes a pedestal adapted to support a workpiece to be processed, a reactor base housing the pedestal, and a coil antenna adjacent the reactor and which is adapted to inductively couple RF power into the reactor, said plasma chamber enclosure structure comprising:a) said plasma chamber enclosure structure being a single-wall dielectric enclosure structure; b) said plasma chamber enclosure structure being of an inverted cup-shape configuration; c) said plasma chamber enclosure structure having a substantially flat top central portion; d) said plasma chamber enclosure structure having a side wall portion generally transverse to said flat top central portion, said side wall portion having a height less than about half of a diameter of said flat top central portion, said plasma chamber enclosure structure comprising a flange portion integrally formed with said side wall portion, said flange portion being located distal from said flat top central portion and extending radially outward without extending inward toward an interior of the chamber; e) said plasma chamber enclosure structure being adapted to cover the reactor base to comprise the RF plasma reactor; f) said plasma chamber enclosure structure being adapted to define a plasma processing volume over the pedestal; g) said plasma chamber enclosure structure being capable of transmitting inductive power therethrough from an adjacent antenna; and h) said plasma chamber enclosure structure being formed of a dielectric material selected from the group consisting of silicon, silicon carbide, quartz, and alumina.