Patent ID: 6193798
Filing Date: 2001-02-27
Classification: H01L

Abstract:
A device for treating a wafer-shaped article, comprising:a rotatable carrier having a portion for holding a wafer-shaped article;a hood defining an interior space above said carrier for holding an inert gas, said hood having a peripheral edge adjacent to said carrier that has a diameter at least as great as a diameter of the portion of said carrier for holding a wafer-shaped article so that said hood completely overlaps the portion;an inert gas inlet into said hood for supplying an inert gas to said interior space of said hood;a fluid inlet over said carrier for supplying a fluid to the portion of said carrier for holding a wafer-shaped article; anda hollow tube that supports said hood and from which said fluid inlet emerges, said inert gas inlet comprising openings in said hollow tube that are separate from said fluid inlet and that are aligned so that inert gas emerges generally radially from said openings,an entirety of said peripheral edge of said hood being spaced from said carrier to define a peripheral opening to an exterior of said hood between said peripheral edge and said carrier for escape of a gas from said interior space and for discharge of a fluid, wherein the entirety of said peripheral edge of said hood is directly over and coextensive with a peripheral edge of said carrier.