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.

Date of Patent:
Jan. 28, 2025

Filed:

Mar. 09, 2022
Applicant:

Kioxia Corporation, Tokyo, JP;

Inventor:

Daisaburo Takashima, Yokohama Kanagawa, JP;

Assignee:

Kioxia Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 13/00 (2006.01); H10B 61/00 (2023.01); H10B 63/00 (2023.01);
U.S. Cl.
CPC ...
H10B 63/34 (2023.02); H10B 61/22 (2023.02); H10B 63/845 (2023.02); G11C 2213/71 (2013.01);
Abstract

In a nonvolatile semiconductor memory device, in a cell block, a local bit line is connected to a bit line via a select transistor. The local bit line extends in a third direction. A local source line is connected to a source line and extends in the third direction. A plurality of memory cells are connected in parallel between the local source line and the local bit line. Each of the memory cells includes a cell transistor and a resistance change element. The cell transistor has a gate connected to a corresponding one of the word lines and one end connected to one of the local bit line or the local source line. The resistance change element is connected between the other end of the cell transistor and the other one of the local bit line or the local source line.


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