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:
Mar. 03, 2015
Filed:
Sep. 06, 2011
Kiyohito Nishihara, Kanagawa-ken, JP;
Kiyohito Nishihara, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a semiconductor memory device includes a semiconductor substrate, a plurality of element-separating insulators, and contacts. The plurality of element-separating insulators partition the upper layer portion into a plurality of active areas extending in a first direction. The contacts are connected to the active areas. A recess is made in a part in the first direction of an upper surface of each of the active areas. The recess is made across the entire active area in a second direction orthogonal to the first direction. Positions in the first direction of two of the contacts connected respectively to mutually-adjacent active areas are different from each other. One of the contacts is in contact with a side surface of the recess and not in contact with a bottom surface of the recess.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile