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:
Dec. 16, 2025
Filed:
Jul. 11, 2022
Samsung Electronics Co., Ltd., Suwon-si, KR;
Samsung Electronics Co., Ltd., Gyeonggi-do, KR;
Abstract
A three-dimensional semiconductor memory device may include a substrate, a stack structure including interlayer dielectric layers and gate electrodes alternately and repeatedly stacked on the substrate and including a first stack structure on the substrate and a second stack structure on the first stack structure, a seed layer interposed between the first and second stack structures and extended in a horizontal direction, vertical channel structures that penetrate the stack structure and are in contact with the substrate, and a first contact plug that penetrates the stack structure and is in contact with one of the gate electrodes. The seed layer may include first and second seed patterns enclosing the vertical channel structures and the first contact plug, and the first and second seed patterns may be spaced apart from each other in the horizontal direction.