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:
Jun. 04, 2024
Filed:
Mar. 03, 2022
Kioxia Corporation, Tokyo, JP;
Takumi Fujimori, Yokohama Kanagawa, JP;
Tetsuya Sunata, Yokohama Kanagawa, JP;
Masanobu Shirakawa, Chigasaki Kanagawa, JP;
Hideki Yamada, Yokohama Kanagawa, JP;
Kioxia Corporation, Tokyo, JP;
Abstract
A memory device includes a first block including a first memory cell and a first word line connected to the first memory cell, a second block including a second memory cell and a second word line connected to the second memory cell, and a control circuit. The control circuit applies a first voltage to each of the first and second word lines to supply a first erase pulse having a first erase intensity to each of the first and second blocks, when a first erase operation is executed, and applies the first voltage to the first word line and a second voltage higher than the first voltage to the second word line, to supply the first erase pulse to the first block and a second erase pulse having a second erase intensity less than the first erase intensity to the second block, when a second erase operation is executed.