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:
Jun. 14, 2022
Filed:
Jun. 30, 2020
SK Hynix Inc., Icheon-si, KR;
Byung Woo Kang, Icheon-si, KR;
Min Sung Ko, Icheon-si, KR;
Gwang Been Kim, Icheon-si, KR;
Hwal Pyo Kim, Icheon-si, KR;
Jin Taek Park, Icheon-si, KR;
Young Ock Hong, Icheon-si, KR;
SK hynix Inc., Icheon-si, KR;
Abstract
A semiconductor memory device includes a substrate including a peripheral circuit, a stepped dummy stack overlapping the substrate and including a plurality of steps extending in a first direction, a plurality of contact groups passing through the stepped dummy stack, and upper lines respectively connected to the contact groups. The contact groups include a first contact group having two or more first contact plugs arranged in the first direction. The upper lines include a first upper line commonly connected to the first contact plugs.