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:
Nov. 17, 2020
Filed:
Nov. 22, 2019
Toshiba Memory Corporation, Minato-ku, JP;
Takashi Kobayashi, Yokohama, JP;
Yoichi Minemura, Yokkaichi, JP;
Eietsu Takahashi, Yokohama, JP;
Masaki Kondo, Yokkaichi, JP;
Daisuke Hagishima, Tokyo, JP;
Toshiba Memory Corporation, Minato-ku, JP;
Abstract
According to one embodiment, a semiconductor memory device includes: a memory string including first and second select transistors and memory cell transistors; a bit line connected to the first select transistor; word lines which are connected to gates of the memory cell transistors, respectively; first and second select gate lines which are connected to gates of the first and second select transistors, respectively; a first contact plug connected to the first select gate line; a first wiring layer provided on the first contact plug; a second contact plug connected to the second select gate line; a second wiring layer provided on the second contact plug; and a row decoder connected to the first and second wiring layers. The row decoder applies different voltages to the first select gate line and the second select gate line.