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:
Oct. 27, 2009
Filed:
Sep. 25, 2007
Tomoaki Shino, Kawasaki, JP;
Akihiro Nitayama, Yokohama, JP;
Takeshi Hamamoto, Yokohama, JP;
Hideaki Aochi, Kawasaki, JP;
Takashi Ohsawa, Yokohama, JP;
Ryo Fukuda, Yokohama, JP;
Tomoaki Shino, Kawasaki, JP;
Akihiro Nitayama, Yokohama, JP;
Takeshi Hamamoto, Yokohama, JP;
Hideaki Aochi, Kawasaki, JP;
Takashi Ohsawa, Yokohama, JP;
Ryo Fukuda, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
This disclosure concerns a memory comprising a charge trapping film; a gate insulating film; a back gate on the charge trapping film; a front gate on the gate insulating film; and a body region provided between a drain and a source, wherein the memory includes a first storage state for storing data depending on the number of majority carriers in the body region and a second storage state for storing data depending on the amount of charges in the charge trapping film, and the memory is shifted from the first storage state to the second storage state by converting the number of majority carriers in the body region into the amount of charges in the charge trapping film or from the second storage state to the first storage state by converting the amount of charges in the charge trapping film into the number of majority carriers in the body region.