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:
May. 02, 2017
Filed:
Sep. 09, 2016
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Mitsuaki Honma, Fujisawa Kanagawa, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Abstract
According to one embodiment, the semiconductor memory device includes a first memory cell and a word line. The first memory cell is capable of storing two or more bits of data. The word line is coupled with the first memory cell. a write operation repeat a program loop. The program loop includes a program operation and a verification operation. A program voltage is applied to the word line in the program operation. The write operation includes a first program loop and a second program loop subsequent to the first program loop. Program voltage is applied a first number of times in the first program loop. Program voltage is applied a second number of times in the second program loop. The second number of times is larger than the first number of times.