Patent ID: 8039772

Claim:
A microwave resonance plasma generating apparatus, comprising: a gas supplying unit which supplies a gas into a process chamber; a microwave generating unit which generates a microwave to enable production of plasma in the process chamber; a plasma producing unit which produces electrons and photons of high energy using the microwave generated from the microwave generating unit, and collides the electrons and photons with the gas supplied into the process chamber, to produce plasma, wherein the plasma producing unit comprises a coaxial waveguide comprising: an inner electrode disposed adjacent to the microwave generating unit; an outer electrode connected to the microwave generating unit and disposed to coaxially surround a portion of the inner electrode, the outer electrode being shorter than the inner electrode; and a dielectric tube disposed between the inner electrode and the outer electrode to insulate between the inner electrode and the outer electrode, wherein the dielectric tube has a cylindrical shape, surrounds and is spaced apart from the inner electrode, and is supported by a gasket and a tip of one end of the outer electrode.