Patent ID: 9526159
Filing Date: 2016-12-20
CPC Classification: C23C,H01J,H05H

Claim Text:
1. A semiconductor manufacturing device, comprising: a chamber configured to receive a wafer, and to be supplied with a reaction gas; a rotational antenna including a rotator; and a housing, wherein the center coil is rotatably supported with respect to the chamber, the center coil and the branch coils, which are connected to each other, are rotatable about the rotation center axis defined by the center coil, the center coil is rotatably coupled to a high frequency power source which is fixed with respect to the chamber, and the center coil and the branch coils are configured to receive a radio frequency power supplied from the high frequency power source when the center coil and the branch coils are rotating with respect to the chamber and the high frequency power source is fixed with respect to the chamber, an electromagnetic field, induced by the radio frequency power transmitted through the branch coils which are rotating, is rotated along a circumferential direction of the center coil, when the center coil and the branch coils are rotated about the rotation center axis, inductively coupled plasma is uniformly formed along the circumferential direction of the center coil, when the center coil and the branch coils are rotated about the rotation center axis, the center coil is electrically insulated from the rotator, the center coil is mounted to the rotator with an insulation member interposed between the center coil and the rotator, and the center coil is rotatable together with the rotator, the rotator assembled with the center coil is rotatably fitted into the housing, the branch coils have grounding parts at corresponding ends of the branch coils, and the grounding parts are in contact with the rotator and rotatable together with the rotator, and the grounding parts, while rotating about the rotation center axis when the center coil and the branch coils are rotated about the rotation center axis, are rotatably coupled to the housing through the rotator for electrical grounding.