PLASMA PROCESSING APPARATUS AND METHOD
First Claim
1. A plasma processing apparatus in which a microwave is propagated into a dielectric body disposed at a top surface of a process chamber through a plurality of slots formed in a bottom face of a rectangular waveguide to excite a predetermined gas supplied into the process chamber into plasma by electric field energy of an electromagnetic field formed on a surface of the dielectric body, to thereby generate plasma with which a substrate is processed,wherein a top face member of said rectangular waveguide is formed of a conductive, nonmagnetic material and is disposed so as to be movable up and down relative to the bottom face of said rectangular waveguide.
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Accused Products
Abstract
There is provided a plasma processing apparatus in which a microwave is propagated into a dielectric body disposed at a top surface of a process chamber through a plurality of slots formed in a bottom face of a rectangular waveguide to excite a predetermined gas supplied into the process chamber into plasma by electric field energy of an electromagnetic field formed on a surface of the dielectric body, to thereby generate plasma with which a substrate is processed, wherein a top face member of the rectangular waveguide is formed of a conductive, nonmagnetic material and is disposed so as to be movable up and down relative to the bottom face of the rectangular waveguide. To change a wavelength in the rectangular waveguide, the top face member of the rectangular waveguide is moved up and down relative to the bottom face of the rectangular waveguide according to conditions of the plasma processing performed in the process chamber, such as gas species, pressure, and a power of the microwave of a microwave supplier.
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Citations
17 Claims
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1. A plasma processing apparatus in which a microwave is propagated into a dielectric body disposed at a top surface of a process chamber through a plurality of slots formed in a bottom face of a rectangular waveguide to excite a predetermined gas supplied into the process chamber into plasma by electric field energy of an electromagnetic field formed on a surface of the dielectric body, to thereby generate plasma with which a substrate is processed,
wherein a top face member of said rectangular waveguide is formed of a conductive, nonmagnetic material and is disposed so as to be movable up and down relative to the bottom face of said rectangular waveguide.
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16. A plasma processing method in which a microwave is propagated into a dielectric body disposed at a top surface of a process chamber through a plurality of slots formed in a bottom face of a rectangular waveguide to excite a predetermined gas supplied into the process chamber into plasma by electric field energy of an electromagnetic field formed on a surface of the dielectric body, to thereby generate plasma with which a substrate is processed,
wherein a wavelength of said microwave in said waveguide is controlled by moving up and down a top face member of said rectangular waveguide relative to the bottom face of said rectangular waveguide.
Specification