Patent ID: 11862434
Assignee: PSK, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC C  H | IPC C  H

Claim 8:
9. A substrate treating apparatus using a plasma, the apparatus comprising:
a chamber;
a gas supply unit supplying a process gas into the chamber;
a plasma source generating plasma in the chamber;
a first coating film covering inside walls of the chamber; and
a second coating film covering the inside walls of the chamber and provided in a material different from the first coating film,
wherein, when viewed from a front cross-section of the chamber, a thickness of the first coating film in an upper area, including an uppermost edge, of the chamber and in a lower area, including a bottommost edge, of the chamber is more than the thickness of the first coating film in a central area, including a centerline, of the chamber,
wherein the chamber is a plasma chamber generating the plasma,
wherein at an outside the plasma chamber, an antenna is wound multiple times on the plasma chamber,
wherein the antenna is an inductively coupled plasma (ICP) antenna, and
wherein a power source applying a power to the antenna is connected to one end of the antenna, and an opposite end of the antenna is grounded.