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:
Aug. 06, 2024
Filed:
Dec. 10, 2020
Applicant:
Yangtze Memory Technologies Co., Ltd., Wuhan, CN;
Inventors:
Assignee:
YANGTZE MEMORY TECHNOLOGIES CO., LTD., Wuhan, CN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H10B 41/27 (2023.01); H01L 23/00 (2006.01); H10B 41/50 (2023.01); H10B 43/27 (2023.01); H10B 43/50 (2023.01);
U.S. Cl.
CPC ...
H10B 43/50 (2023.02); H01L 23/562 (2013.01); H10B 41/27 (2023.02); H10B 41/50 (2023.02); H10B 43/27 (2023.02);
Abstract
A 3D memory device includes a memory stack and a support structure. The memory stack, on a substrate, includes a core region and a non-core region neighboring the core region. The support structure extends in the non-core region and into the substrate. The support structure includes a first support portion and a second support portion over the first support portion. The first support portion has a stiffness higher than the second support portion.