Patent ID: 6447632
Filing Date: 2002-09-10
Classification: C23F,H01L

Abstract:
A nozzle device for use in gaseous polishing of a surface of an object, said nozzle device comprising:a nozzle body having a nozzle opening at a downstream end thereof, said nozzle opening being operable to eject a polishing gas to the surface to be polished; a shutter device disposed in proximity to said nozzle opening, said shutter device being operable to allow ejection therefrom of the polishing gas to a local target area of the surface and to block the ejection; and a control mechanism operable to control operation of said shutter device and control the ejection of the polishing gas, wherein said shutter device is provided with a shield member disposed so as to shield areas of the surface to be polished other than the local target area from the polishing gas ejected from said nozzle opening, and said control mechanism comprises an attaching device attaching said shield member to an outer periphery of said nozzle body so as to be freely movable relative thereto.