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. 15, 2021
Filed:
Mar. 25, 2020
Macronix International Co., Ltd., Hsinchu, TW;
Shaw-Hung Ku, Hsinchu, TW;
Chih-Chieh Cheng, Zhubei, TW;
Cheng-Hsien Cheng, Yunlin County, TW;
Yu-Hung Huang, Tainan, TW;
Atsuhiro Suzuki, Hsinchu, TW;
Wen-Jer Tsai, Hualien, TW;
MACRONIX INTERNATIONAL CO., LTD., Hsinchu, TW;
Abstract
Provided is an erase method for a multi-tier three-dimension (3D) memory including a plurality of tiers and a plurality of blocks, each of the tiers including a plurality of word lines. The erase method includes: in erasing a selected block among the plurality of blocks, in a current iteration, selecting at least one tier among the plurality of tiers to be erased by a first erase voltage; determining whether the at least one tier passes erase verification; and if the at least one tier passes erase verification, in a next iteration, inhibiting the at least tier which already passes erase verification from erase.