Patent ID: 11948777
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 7:
8. A method of manufacturing a semiconductor device, the method comprising:
etching an etch target layer by providing a first process gas to a process chamber, in which a wafer is mounted, to be substantially constant at a first flow rate; and
providing a second process gas to the process chamber at a pulse varying between a second flow rate and a third flow rate,
wherein source power for generating plasma based on the first and second process gases and bias power for accelerating the plasma are provided to the process chamber to be constant,
wherein one of the first process gas and the second process gas comprises an etchant gas, the other one thereof comprises a passivant gas, and
wherein each of the first to third flow rates is greater than zero.