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:
Nov. 04, 2025
Filed:
Feb. 28, 2022
Kioxia Corporation, Tokyo, JP;
Keisuke Nakatsuka, Kobe Hyogo, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
A semiconductor memory device includes first and second memory cell arrays. The first array includes a first semiconductor portion, extending in a first direction, on which a first memory cell and a first select transistor are formed, a first word line connected to the first cell, a first select gate line connected to the first transistor, and a first bit line connected to the first semiconductor portion. The second array includes a second semiconductor portion, extending along the first direction, on which a second memory cell and a second select transistor are formed, a second word line connected to the second cell, a second select gate line connected to the second transistor, and a second bit line connected to the second semiconductor portion. The first and second word lines are electrically connected, but the first and second select gate lines are not electrically connected.