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:
Sep. 05, 2023
Filed:
Jun. 22, 2020
SK Hynix Inc., Icheon-si, KR;
Kang Sik Choi, Seongnam-si, KR;
SK hynix Inc., Icheon-si, KR;
Abstract
A semiconductor memory device includes a first stack including lower conductive patterns separated from each other and stacked on a substrate to form a lower stepped structure, a support pillar passing through the first stack and including an insulating layer, a second stack including upper conductive patterns separated from each other and stacked on the first stack, the upper conductive patterns including an upper stepped structure that does not overlap with the lower stepped structure and the support pillar, a channel structure passing through the second stack and the first stack, and a memory layer surrounding a sidewall of the channel structure.