Patent ID: 11935785
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The method of manufacturing a semiconductor structure according to claim 1, wherein said forming the target layer comprises:
forming an initial target film on the conversion layer;
forming a first mask layer on the initial target film, wherein the first mask layer in the array region and the first circuit region is provided with first initial openings, and a pattern density of the first initial opening in the array region is greater than a pattern density of the first initial opening in the first circuit region;
forming a first sidewall layer covering an inner wall of the first initial opening;
forming a second mask layer covering the first sidewall layer and filling the first initial opening, wherein the second mask layer exposes a top surface of the first sidewall layer; and
removing the first sidewall layer, and etching the initial target film by use of the first mask layer and the second mask layer as a mask to form the target layer.