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. 12, 2017
Filed:
Mar. 20, 2017
Toshiba Memory Corporation, Minato-ku, JP;
Hiroyuki Yamasaki, Nagoya, JP;
TOSHIBA MEMORY CORPORATION, Minato-ku, JP;
Abstract
According to one embodiment, a semiconductor memory device includes a semiconductor substrate, a stacked body, a semiconductor member, a semiconductor portion, a first insulating film, and a charge storage film. The semiconductor member includes a first portion and a second portion, the first portion contacting with the semiconductor substrate, the second portion being provided on the first portion, contacting with the first portion, and having a second width smaller than a first width of the first portion in a first direction crossing a stacking direction. The first insulating film is provided on a side surface of the second portion. The charge storage film is provided on a side surface of the semiconductor portion, extends in the stacking direction, and includes a first portion located on an upper surface of the second portion of the semiconductor member.