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:
Aug. 24, 2010
Filed:
Dec. 13, 2007
Hiroshi Maejima, Milpitas, CA (US);
Makoto Hamada, Mountain View, CA (US);
Hiroshi Maejima, Milpitas, CA (US);
Makoto Hamada, Mountain View, CA (US);
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A semiconductor memory device includes memory cells, a source line, a word line, a bit line, and a driver circuit. The memory cells are formed on a semiconductor layer and have a charge accumulation layer and a control gate on the charge accumulation layer. The word line is connected to gate of the memory cell. The bit line is electrically connected to a drain of the memory cell. The source line is electrically connected to a source of the memory cell. The driver circuit varies potential of the semiconductor layer in conjunction with potential of the source line.