Patent ID: 9653303
Date: 2017-05-16
CPC Classifications: H01L

Claim:
1. A method of manufacturing a semiconductor device, comprising: forming a structure in which first to N-th insulating layers and first to N-th metal layers are alternately provided on a substrate where N is an integer of two or more; processing the first insulating layer; forming a first film on a side face of the first insulating layer, the first film containing a first reaction product generated by processing the first insulating layer; and processing the first metal layer under the first insulating layer, and the second insulating layer under the first metal layer by using the first film as a mask, wherein the first reaction product is generated by a chemical reaction of a substance that forms the first insulating layer, and a first gas used when the first insulating layer is processed; and the first film is formed in a dry etching apparatus by controlling effective power between electrodes of the dry etching apparatus and selecting the first gas to suppress adhesion of the first film to an upper face of the first metal film.