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:
Nov. 08, 2022

Filed:

Jun. 15, 2021
Applicant:

Kioxia Corporation, Tokyo, JP;

Inventor:

Yusuke Umezawa, Yokohama, JP;

Assignee:

Kioxia Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/26 (2006.01); G11C 16/04 (2006.01); H01L 27/11582 (2017.01); H01L 27/11556 (2017.01);
U.S. Cl.
CPC ...
G11C 16/26 (2013.01); G11C 16/0483 (2013.01); H01L 27/11556 (2013.01); H01L 27/11582 (2013.01);
Abstract

A semiconductor memory device includes a first conductive layer, a first and a second semiconductor layer opposed to the first conductive layer, a first and a second electric charge accumulating portion disposed between the first conductive layer and the first and the second semiconductor layer, and a first and a second bit line electrically connected to the first and the second semiconductor layer. A distance from a center position of the first conductive layer to the second semiconductor layer is smaller than a distance from the center position of the first conductive layer to the first semiconductor layer. When a read operation is executed on a first memory cell including the first electric charge accumulating portion and a second memory cell including the second electric charge accumulating portion, a voltage of the second bit line is larger than a voltage of the first bit line.


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Umezawa, Yusuke. (2022). Semiconductor memory device (U.S. Patent No. 11495303). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11495303

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