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

Claim 0:
1. A method of manufacturing a semiconductor device, the method comprising:
providing a first process gas comprising oxygen and second process gas comprising carbon and fluorine to a process chamber at a first flow rate ratio to etch an etch target layer, the process chamber providing a space for treating the etch target layer, the first flow rate ratio being a ratio of a flow rate of the second process gas to a flow rate of the first process gas; and
providing the first process gas and the second process gas to the process chamber at a second flow rate ratio to passivate the etch target layer, the second flow rate ratio being a ratio of a flow rate of the second process gas to a flow rate of the first process gas,
wherein the providing of the first process gas and the second process gas at the first flow rate ratio and the providing of the first process gas and the second process gas at the second flow rate ratio are alternately and iteratively performed,
wherein, in the providing of the first process gas and the second process gas at the first flow rate ratio and the providing of the first process gas and the second process gas at the second flow rate ratio, 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 substantially constant, and
wherein, in the providing of the first process gas and the second process gas at the first flow rate ratio and the providing of the first process gas and the second process gas at the second flow rate ratio, the flow rate of the first process gas is substantially constant to be a first flow rate.