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. 23, 2012
Filed:
Jul. 29, 2010
Kiyotaro Itagaki, Naka-gun, JP;
Yoshiaki Fukuzumi, Yokohama, JP;
Yoshihisa Iwata, Yokohama, JP;
Ryota Katsumata, Yokkaichi, JP;
Kiyotaro Itagaki, Naka-gun, JP;
Yoshiaki Fukuzumi, Yokohama, JP;
Yoshihisa Iwata, Yokohama, JP;
Ryota Katsumata, Yokkaichi, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, in the case of performing an operation for increasing a threshold voltage of a first transistor or a third transistor, a control circuit is configured to apply a first voltage to a bit line, and apply a second voltage greater than the first voltage to a gate of a second transistor, thereby rendering the second transistor in a conductive state to transfer the first voltage to a second semiconductor layer, and then apply a program voltage to a gate of the first transistor or the third transistor to store a charge in a second charge storage layer.