Patent ID: 9214319
Filing Date: 2015-12-15
Classification: H01J,H05H

Abstract:
1. A plasma reactor for processing a substrate, comprising: a processing chamber having a substrate holder operable to hold the substrate; a plasma chamber separate from said processing chamber for generating a plasma to be used in processing the substrate, said plasma chamber having a ceiling and a dielectric side wall defining a plasma chamber interior; an induction coil adjacent said plasma chamber about said dielectric side wall; and a stepped gas injection insert disposed within the plasma chamber interior; wherein said stepped gas injection insert and said side wall define a narrow gas injection channel adjacent said dielectric side wall for providing a process gas to said plasma chamber interior proximate said induction coil, the gas injection insert further defining an active region adjacent to the induction coil for heating of electrons, the gas injection channel providing the process gas to the active region, the gas injection channel being disposed above the active region and having a smaller width than the active region.