Patent ID: 9496121
Filing Date: 2016-11-15
CPC Classification: H01J,H01Q

Claim Text:
1. A substrate treating apparatus comprising: a process chamber having an inner space; a substrate support part disposed within the process chamber for supporting a substrate; a gas supply part supplying a process gas into the process chamber; an antenna unit comprising a first antenna and a second antenna that is spaced apart from and surrounding the first antenna, wherein each antenna comprises an electrically conductive ring of material having a continuous circumferential surface that is symmetrically disposed about a center axis, and wherein each antenna is configured to supply high frequency power into the process chamber to excite the process gas within the process chamber; and a plurality of driving parts connected to each of the first and second antennas for moving the respective first and second antennas, wherein the first and second antennas are each individually movable in a radial direction for increasing or decreasing a radius of the respective first and second antennas.