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:
Aug. 04, 2026
Filed:
Feb. 12, 2024
Kioxia Corporation, Tokyo, JP;
Hiroshi Maejima, Tokyo, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
According to one embodiment, a semiconductor memory device includes, a first string in which a first selection transistor, a first memory cell, and a second selection transistor are coupled in series, a second string in which a third selection transistor, a second memory cell, and a fourth selection transistor are coupled in series, a word line, a first selection gate line, a second selection gate line, a third selection gate line, a fourth selection gate line, a first bit line, and a second bit line. In a read operation of the first memory cell, when a voltage of the word line is raised to a first voltage, a second voltage is applied to the first bit line and a third voltage higher than the second voltage is applied to the second bit line.