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:
Aug. 19, 2025

Filed:

Sep. 06, 2023
Applicant:

Unisantis Electronics Singapore Pte. Ltd., Singapore, SG;

Inventors:

Koji Sakui, Tokyo, JP;

Masakazu Kakumu, Tokyo, JP;

Nozomu Harada, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/404 (2006.01); G11C 11/408 (2006.01); G11C 11/4091 (2006.01); G11C 11/4096 (2006.01); H10B 12/00 (2023.01);
U.S. Cl.
CPC ...
H10B 12/20 (2023.02); G11C 11/404 (2013.01); G11C 11/4087 (2013.01); G11C 11/4091 (2013.01); G11C 11/4096 (2013.01);
Abstract

A memory device includes pages in a column direction on a substrate and memory cells in each page in a row direction in plan view. Each memory cell includes a semiconductor base, first and second impurity regions, connected to a source line and a bit line, respectively, at both ends of the semiconductor base, and first and second gate conductor layers, one of which is connected to a word line and the other of which is connected to a plate line. A continuous operation of a page erase operation and a page write operation is performed by controlling voltages applied to the source line, the bit line, the word line, and the plate line without performing a reset operation for returning the voltage applied to the plate line to a ground voltage.


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