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:
Apr. 09, 2013
Filed:
Mar. 18, 2010
Kazuhiro Nojima, Tokyo, JP;
Kazuhiro Nojima, Tokyo, JP;
Elpida Memory, Inc., Tokyo, JP;
Abstract
To provide a semiconductor memory device comprising a plurality of silicon pillars arranged in a matrix, whose sidewalls are provided with gate electrodes with gate insulating films interposed between the silicon pillars and the gate electrodes and whose top ends are electrically connected to memory elements, and a bit line and a word line provided between the silicon pillars so as to be orthogonal to each other. The bit line is electrically connected to a bottom end of the silicon pillars on both sides of the bit line in alternate rows, and the word line is electrically connected to a gate electrode formed on a sidewall of the silicon pillars on both sides of the word line in alternate columns.