Patent ID: 6030667
Filing Date: 2000-02-29
Classification: H01J,H03H,H05H

Abstract:
An apparatus for performing an inductively-coupled plasma process, said apparatus comprising:a chamber;means for keeping an inside of said chamber vacuous;a sample stage provided in said chamber to support an object to be processed;gas introducing means for introducing gas into said chamber;a radio-frequency power source for generating radio-frequency power;a coil having a length which is approximately an integral multiple of 1/4 of a wavelength of said radio-frequency power, said coil generating a magnetic field for changing the gas introduced into said chamber into a plasma when the radio-frequency power from said radio-frequency power source is supplied thereto and a radio-frequency current flows therethrough, said coil having one end connected to said radio-frequency power source via an impedance matcher and the other end grounded,wherein said object comprises a semiconductor substrate, said object being processed using said gas changed into said plasma by said magnetic field.