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:
May. 20, 2014
Filed:
Mar. 14, 2013
Ho-ki Lee, Seongnam-si, KR;
Gwang-hyun Baek, Seoul, KR;
Du-chul OH, Hwaseong-si, KR;
Jin-kwan Lee, Seoul, KR;
Ki-jeong Kim, Hwaseong-si, KR;
Ho-Ki Lee, Seongnam-si, KR;
Gwang-Hyun Baek, Seoul, KR;
Du-Chul Oh, Hwaseong-si, KR;
Jin-Kwan Lee, Seoul, KR;
Ki-Jeong Kim, Hwaseong-si, KR;
Samsung Electronics Co., Ltd., Suwon-Si, Gyeonggi-Do, KR;
Abstract
A semiconductor memory device includes conductive patterns vertically stacked on the substrate and having pad regions extended further at edge portions of the conductive patterns as the conductive patterns descend from an uppermost conductive pattern to a lowermost conductive pattern, a first contact plug disposed on a first pad region of the lowermost conductive pattern, a buffer conductive pattern disposed on a second pad region positioned above the first pad region, and a second contact plug formed on the buffer conductive pattern.