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:

Aug. 02, 2022
Applicant:

Kioxia Corporation, Tokyo, JP;

Inventors:

Kazutaka Ikegami, Inagi, JP;

Takashi Maeda, Kamakura, JP;

Reiko Sumi, Yokohama, JP;

Assignee:

Kioxia Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/34 (2006.01); G11C 16/04 (2006.01); G11C 16/10 (2006.01); G11C 16/24 (2006.01); G11C 16/26 (2006.01); G11C 16/30 (2006.01);
U.S. Cl.
CPC ...
G11C 16/3481 (2013.01); G11C 16/0483 (2013.01); G11C 16/10 (2013.01); G11C 16/24 (2013.01); G11C 16/26 (2013.01); G11C 16/30 (2013.01);
Abstract

A memory system according to an embodiment includes a first bit line, a source line, a first word line, a second word line, a first memory pillar and a control circuit. The control circuit performs a first verify operation to first and second memory cells, a second verify operation to the first memory cell, a third verify operation to the second memory cell and a write operation or a read operation with a lower voltage in accordance with a request from an external device.


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