The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 11, 2023
Filed:
Dec. 07, 2020
Applicant:
Samsung Electronics Co., Ltd., Suwon-si, KR;
Inventors:
Assignee:
Samsung Electronics Co, Ltd., Suwon-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/11582 (2017.01); H01L 27/11556 (2017.01); H01L 27/11526 (2017.01); H01L 27/11573 (2017.01); H01L 27/11519 (2017.01); H01L 27/11565 (2017.01);
U.S. Cl.
CPC ...
H01L 27/11582 (2013.01); H01L 27/11519 (2013.01); H01L 27/11526 (2013.01); H01L 27/11556 (2013.01); H01L 27/11565 (2013.01); H01L 27/11573 (2013.01);
Abstract
A three-dimensional semiconductor memory device includes a substrate including cell and connection regions. An electrode structure is disposed on the substrate, the electrode structure having a staircase structure on the connection region. A first vertical channel structure and a first dummy structure at least partially penetrate the electrode structure on the cell region and the connection region, respectively. Bottoms of expanded portions of the first vertical channel structure and the first dummy structure are located at first and second levels, respectively. The second level is higher than the first level.