Patent ID: 6246175
Filing Date: 2001-06-12
Classification: H01J,H05H

Abstract:
A large area microwave plasma generator comprising:a surface wave resonant cavity mechanism consisting of a flat plate provided in a surface thereof with a plurality of vertical vanes parallel to one another, said mechanism further consisting of an inlet plate contiguous to a first vertical vane of said vertical vanes, said inlet plate having a couple hole suitable for receiving a microwave energy, said mechanism still further consisting of a tail end plate contiguous to a last vertical vane of said vertical vanes, said inlet plate and said tail end plate being perpendicular to said surface of said flat plate and having an upright height greater than an upright height of said vertical vanes; anda vacuum cavity used to produce plasma and connected with a pumping mechanism and a gas supplying mechanism for providing said vacuum cavity with gas for producing said plasma, said vacuum cavity provided in a wall thereof with a flat couple window facing said vertical vanes, said surface wave resonant cavity mechanism capable of generating an electromagnetic surface wave at the time when a microwave energy is introduced via said couple hole into said surface wave resonant cavity mechanism, said electromagnetic surface wave being introduced via said couple window into said vacuum cavity to cause said gas to produce a plasma in said vacuum cavity.