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. 29, 2012
Filed:
Mar. 17, 2010
Haruhiko Koyama, Kanagawa-ken, JP;
Haruhiko Koyama, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A semiconductor memory device includes first and second element regions having a rectangular bent portion and a pair of straight line portions connected to both ends of the bent portions, respectively. The pair of straight line portions extends in an opposite direction each other along a first direction. A first element region is arranged in parallel with the second element region so that the first and second element regions are isolated by an element isolation region, and the first and second bent portions are arranged along a second direction in which the first direction intersects with the second direction at an acute angle. A select gate line connected to select transistors extends in the second direction. A plurality of word lines connected to the memory cells are arranged in parallel with the select gate line in an opposite side of the bent portions with respect to the select gate line.