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:
Jul. 18, 2017
Filed:
Mar. 07, 2016
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Toru Matsuda, Yokkaichi, JP;
Kenichi Fujii, Yokkaichi, JP;
KABUSHIKI KAISHA TOSHIBA, Minato-ku, JP;
Abstract
According to an embodiment, a semiconductor memory device comprises a first region, a second region, and a third region. The first region includes: a part of a stacked body that includes a plurality of conductive layers; and a memory columnar body which has its side surface covered by the stacked body and configures a memory string. The second region includes: a contact; a contact portion connected to the contact, of the conductive layer; and a plurality of first columnar bodies. The third region includes a second columnar body. In a plane parallel to the substrate, a total area of the second columnar body in a small region that has the same area as one or more contact portions, in the third region is larger than a total area of the first columnar body in the one or more contact portions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile