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:
Sep. 22, 2020
Filed:
Sep. 05, 2019
Toshiba Memory Corporation, Minato-ku, JP;
TOSHIBA MEMORY CORPORATION, Minato-ku, JP;
Abstract
A semiconductor memory device includes first and second memory transistors and first and second word lines connected to gate electrodes of the memory transistors. The semiconductor memory device is configured such that a first write operation to the first memory transistor, a second write operation to the second memory transistor, a third write operation to the first memory transistor, and a fourth write operation to the second memory transistor are executed in this order. In the first and second write operations, data write is performed using only a program operation. In the third and fourth write operations, data write is performed using the program operation and the verify operation.