Patent ID: 6936546
Filing Date: 2005-08-30
Classification: H01J,H01L

Abstract:
1. An apparatus for shaping a thin film on a wafer comprising: a rotatable chuck for holding a wafer thereon; a housing having a slot for receiving an edge of a wafer on said rotatable chuck therein; at least two plasma sources mounted on said housing for generating at least two flows of reactive gas; a first channel in said housing communicating with a first of the at least two plasma sources to direct the flow of reactive gas toward the edge of the wafer in said slot of said housing; an exhaust plenum within said housing for receiving the reactive gas; an exhaust line communicating with and extending from said exhaust plenum for expelling reactive gas from said exhaust plenum; at least one second channel in said housing located radially within said first channel for directing a flow of diluent/quenching gas onto the wafer; and at least one exhaust channel in said housing located between said second channel and said first channel for exhausting the diluent/quenching gas and reactive gas therefrom.