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:
Jan. 25, 2022
Filed:
Oct. 02, 2020
Yangtze Memory Technologies Co., Ltd., Hubei, CN;
Yangtze Memory Technologies Co., Ltd., Hubei, CN;
Abstract
Embodiments of erasing methods for a three-dimensional (3D) memory device are disclosed. The 3D memory device includes multiple decks vertically stacked over a substrate, wherein each deck includes a plurality of memory cells. The erasing method includes checking states of the plurality of memory cells of an erase-inhibit deck and preparing the erase-inhibit deck according to the states of the plurality of memory cells. The erasing method also includes applying an erase voltage at an array common source, applying a hold-release voltage on unselected word lines of the erase-inhibit deck, and applying a low voltage on selected word lines of a target deck.