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. 05, 2024
Filed:
Aug. 26, 2022
Kioxia Corporation, Tokyo, JP;
Tomoki Nakagawa, Yokohama Kanagawa, JP;
Koji Kato, Yokohama Kanagawa, JP;
Shuhei Oketa, Yokohama Kanagawa, JP;
Mai Shimizu, Kamakura Kanagawa, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
A semiconductor memory device includes a memory string, a voltage supply circuit, a plurality of control signal lines, a row decoder, and a control circuit. The voltage supply circuit is configured to generate a plurality of operation voltages to operate the semiconductor memory device. The operation voltages include a negative voltage. The plurality of control signal lines is connected between the voltage supply circuit and the memory string. The row decoder includes a plurality of transistors provided in the plurality of control signal lines, respectively. The control circuit is configured to control the transistors of the row decoder, and cause the negative voltage to be supplied to the row decoder during a certain period of time in which a voltage of one of the control signal lines drops to a negative level.