Patent ID: 6770146
Filing Date: 2004-08-03
Classification: B05C,C23C,H01L

Abstract:
A system for processing semiconductor wafers comprising:a thermal processing chamber adapted to contain semiconductor wafers; a heating device for heating semiconductor wafers contained within said chamber; a rotor positioned within said thermal processing chamber having a top and bottom, said rotor being configured to support a semiconductor wafer, said rotor having a circular shape and being comprised of a material capable of being influenced by a magnetic force; and at least one rotation actuator having a first rotation surface spaced from a second opposing rotation surface, the first rotation surface being positioned above the rotor and facing the top of the rotor, the second rotation surface being positioned below the rotor and facing the bottom of the rotor, said rotor being positioned in between said first and second rotation surfaces, said rotation actuator being configured to generate a magnetic field that causes said rotor to rotate without contacting said rotor.