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. 29, 2014
Filed:
Sep. 14, 2012
Takuya Futatsuyama, Yokohama, JP;
Toshiaki Edahiro, Yokohama, JP;
Norihiro Fujita, Yokohama, JP;
Fumitaka Arai, Yokohama, JP;
Tohru Maruyama, Kamakura, JP;
Masaki Kondo, Kawasaki, JP;
Takuya Futatsuyama, Yokohama, JP;
Toshiaki Edahiro, Yokohama, JP;
Norihiro Fujita, Yokohama, JP;
Fumitaka Arai, Yokohama, JP;
Tohru Maruyama, Kamakura, JP;
Masaki Kondo, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A nonvolatile semiconductor memory device includes a memory cell which stores data and which is capable of being rewritten electrically, a bit line which is connected electrically to one end of a current path of the memory cell, a control circuit which carries out a verify operation to check a write result after data is written to the memory cell, and a voltage setting circuit which sets a charging voltage for the bit line in a verify operation and a read operation and makes a charging voltage in a read operation higher than a charging voltage in a verify operation.