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. 27, 2010
Filed:
May. 31, 2007
Shoichi Watanabe, Kawasaki, JP;
Shoichi Watanabe, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A nonvolatile semiconductor storage device includes a semiconductor substrate, and at least one memory cell formed on the semiconductor substrate, the at least one memory cell having a gate electrode unit in which a floating gate electrode and a control gate electrode are stacked, at least part of the control gate electrode being silicidated. The nonvolatile semiconductor storage device further includes at least one dummy transistor formed on the semiconductor substrate, the at least one dummy transistor having a first dummy electrode, and a second dummy electrode which has a current leakage path and which is stacked on the first dummy electrode.