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:
Oct. 15, 2019
Filed:
May. 24, 2018
SK Hynix Inc., Gyeonggi-do, KR;
Go-Hyun Lee, Gyeonggi-do, KR;
Jae-Taek Kim, Seoul, KR;
Jun-Youp Kim, Gyeonggi-do, KR;
Chang-Man Son, Gyeonggi-do, KR;
SK hynix Inc., Gyeonggi-do, KR;
Abstract
A semiconductor memory device includes a peripheral circuit region including a first substrate, a peripheral circuit element disposed at least partially over the first substrate, a first dielectric layer covering the peripheral circuit element and a bottom wiring line disposed in the first dielectric layer and electrically coupled to the peripheral circuit element; a cell region including a second substrate disposed over the first dielectric layer, a memory cell array disposed over the second substrate; a second dielectric layer covering the memory cell array; a contact coupled to the bottom wiring line by passing through the second dielectric layer and the first dielectric layer in a first direction perpendicular to a top surface of the second substrate; and at least one dummy contact disposed adjacent to the contact in the second dielectric layer.