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:
May. 24, 2022
Filed:
Sep. 28, 2020
Sandisk Technologies Llc, Addison, TX (US);
Ken Oowada, Fujisawa, JP;
Huai-Yuan Tseng, San Ramon, CA (US);
SanDisk Technologies LLC, Addison, TX (US);
Abstract
To improve the erase process, multiple methods of erasing are utilized. A first method of erasing is relied on at the beginning of life of the memory system. A second method is increasingly relied on as the memory system is used and undergoes many program/erase cycles. In one example, the first method of erase includes applying an erase enable voltage separately to different subsets of the word lines while word lines not receiving the erase enable voltage receive an erase inhibit voltage. In one example, the second method of erase includes applying an erase enable voltage concurrently to all subsets of the word lines.