Patent ID: 11901191
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A semiconductor device manufacturing method comprising:
forming an active pattern on a substrate;
forming a source/drain pattern on the active pattern;
forming an interlayer insulating film on the source/drain pattern;
forming a pre-active contact connected with the source/drain pattern, in the interlayer insulating film; and
etching a portion of the pre-active contact,
wherein the etching the portion of the pre-active contact includes at least one etching cycle,
the at least one etching cycle includes supplying an active gas onto the pre-active contact, and supplying an etching support gas after supplying the active gas, and
the etching support gas is expressed by the following general formula, wherein each of R1, R2, R3, R4 and R5 independently includes hydrogen or a C1-C4 alkyl group, and N is nitrogen.