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. 23, 2013
Filed:
Mar. 17, 2011
Mutsuo Morikado, Mie-ken, JP;
Mutsuo Morikado, Mie-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a semiconductor memory device includes each of memory cells including a floating electrode above a semiconductor substrate via the gate insulator, a control gate electrode above the floating gate electrode via a first inter-gate insulator, first diffusion layers as source or drain, a contact electrode portion including a bottom electrode with an opening and a top electrode on the bottom electrode, the bottom electrode being arranged on the first gate insulator having the opening, the top electrode being electrically connected to the semiconductor substrate via the first opening, and a connection diffusion layer formed in the semiconductor substrate below the first opening.