Patent ID: 11961720
Assignee: T.O.S CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A multi-channel device for detecting plasma at an ultra-fast speed, comprising:
a first antenna module connected to a first output terminal in contact with a substrate on a chuck of a process chamber and extending to ground, and receiving a first leakage current leaking through the substrate to increase reception sensitivity of the first leakage current;
a first current detection module detecting the first leakage current;
a current measurement module receiving the first leakage current output from the first current detection module, and extracting the received first leakage current for each predetermined period to generate a first leakage current measurement information; and
a control module comparing the first leakage current measurement information with a reference value to generate first arcing occurrence information;
wherein the first current detection module includes:
a 1-1-th ammeter installed between the first output terminal and the first antenna module to detect a 1-1-th leakage current leaking from the first output terminal; and
a 1-2-th ammeter installed between the first antenna module and the ground to detect a 1-2-th leakage current output from the first antenna module.