公开(公告)号：US20230026774A1

公开(公告)日：2023-01-26

申请号：US17709803

申请日：2022-03-31

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sungmin HWANG ,  Taewon KANG ,  Dongsung WOO ,  Taegon LEE ,  Bongtae PARK ,  Jaejoo SHIM

IPC: H01L27/108

Abstract: A semiconductor device and a data storage system including the same, the semiconductor device including a substrate structure; a stack structure; a vertical memory structure; a vertical dummy structure; and an upper separation pattern, wherein hen viewed on a plane at a first height level, higher than a height level of a lowermost end of the upper separation pattern, the dummy channel layer includes a first dummy channel region facing the dummy data storage layer and a second dummy channel region facing the dummy data storage layer, the first dummy channel region having a thickness different from a thickness of the second dummy channel region.