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:
Dec. 20, 2016
Filed:
Jan. 28, 2016
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Shinya Naito, Toyota, JP;
Mitsutoshi Nakamura, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Abstract
A semiconductor memory device includes a semiconductor substrate, a stacked body provided on the semiconductor substrate, a semiconductor pillar and an electrode member provided inside the stacked body, a charge storage film, and a control circuit. The stacked body includes insulating films and electrode films stacked alternately. The semiconductor pillar and the electrode member extend in a stacking direction and lower ends thereof are connected to the semiconductor substrate. The charge storage film is provided between the semiconductor pillar and one of the electrode films. The control circuit sets an upper end of the semiconductor pillar to a floating state, applies a first potential to the semiconductor substrate, applies a second potential to the electrode member, and applies a third potential to the one of the electrode films. The second potential is lower than the first potential. The third potential is lower than the second potential.