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. 08, 2025
Filed:
Mar. 17, 2021
Kioxia Corporation, Tokyo, JP;
Tomohiro Kuki, Yokkaichi, JP;
Tatsufumi Hamada, Nagoya, JP;
Shinichi Sotome, Yokkaichi, JP;
Yosuke Mitsuno, Yokkaichi, JP;
Muneyuki Tsuda, Ichinomiya, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
According to one embodiment, a semiconductor storage device includes a substrate, a first electric charge holder, and a channel layer. At least a part of the first electric charge holder is curved in a first cross section along a surface of the substrate. The channel layer is inside the first electric charge holder in the first cross section. At least a part of the channel layer is curved in the first cross section. The first electric charge holder has a curvature varying in accordance with a position in the first cross section. The channel layer has a film thickness varying in accordance with the curvature of the first electric charge holder in the first cross section.