Patent ID: 11881382
Assignee: SEMES CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A substrate treating method for a substrate treating apparatus including a substrate supporting unit comprising an electrostatic chuck and a plasma generating unit comprising:
supplying a DC voltage to the substrate supporting unit and supplying an RF power to the plasma generating unit, the DC voltage being a DC voltage for chucking the substrate and the RF power being a process RF power for treating the substrate;
supplying a first discharging DC voltage to the substrate supporting unit and supplying a first discharging RF power to the plasma generating unit during a first discharging time period;
supplying a second discharging DC voltage to the substrate supporting unit and supplying a second discharging RF power greater than the first discharging RF power to the plasma generating unit during a second discharging time period longer than the first discharging time period after the first discharging time period; and
supplying the second discharging DC voltage to the substrate supporting unit and supplying a third discharging RF power greater than zero and less than the first discharging RF power to the plasma generating unit during a third discharging time period after the discharging time period.