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. 30, 2019
Filed:
Jan. 31, 2018
Toshiba Memory Corporation, Minato-ku, JP;
Keita Kimura, Fujisawa, JP;
Toshiba Memory Corporation, Minato-ku, JP;
Abstract
A semiconductor memory device according to an embodiment includes a first memory cell transistor and a second memory cell transistor, a select transistor, a bit line, a first word line and a second word line, a select gate line, and a controller. During the program operation in the write operation with the first word line selected, the controller applies a first voltage to the select gate line and a second voltage lower than the first voltage to the first word line before applying the program pulse to the first word line, and applies a third voltage lower than the first voltage and higher than the second voltage to the select gate line while applying the program pulse to the first word line.