Patent ID: 11869748
Assignee: KOKUSAI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 9:
10. A substrate processing apparatus comprising:
a process vessel in which a process chamber is provided, wherein a process gas is excited into plasma in the process chamber;
a gas supplier configured to supply the process gas into the process chamber;
a coil wound around an outer peripheral surface of the process vessel while being spaced apart from the outer peripheral surface, wherein high frequency power is supplied to the coil; and
an electrostatic shield configured to limit an influence of the electric field acting between the outer peripheral surface of the process vessel and the coil specifically where an amplitude of a voltage standing wave applied to the coil is maximized and to allow the influence of the electric field acting between the outer peripheral surface of the process vessel and the coil specifically where the amplitude of the voltage standing wave applied to the coil is minimized.