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:
Jul. 23, 2024
Filed:
Sep. 08, 2022
Kioxia Corporation, Tokyo, JP;
Masahiko Iga, Yokohama Kanagawa, JP;
Kenro Kikuchi, Fujisawa Kanagawa, JP;
Nobushi Matsuura, Kamakura Kanagawa, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
A semiconductor memory device performs a write operation and an erase operation. The write operation includes a first program operation that applies a first program voltage to a first conductive layer. The first program voltage increases by a first offset voltage together with an increase in an execution count of a first write loop. An erase operation includes a program voltage control operation and an erase voltage supply operation that applies an erase voltage to a first wiring. The program voltage control operation includes a second program operation that applies a second program voltage to a third conductive layer. The second program voltage increases by a second offset voltage together with an increase in a number of times of execution of a second write loop. A magnitude of the first program voltage is adjusted according to a magnitude of the second program voltage.