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. 08, 2026
Filed:
Apr. 09, 2025
Winbond Electronics Corp., Taichung City, TW;
Ju-Chieh Cheng, Taichung City, TW;
Lung-Chi Cheng, Hsinchu County, TW;
Shan-Hsuan Tsai, Taichung City, TW;
Yu-Cheng Chuang, Hsinchu County, TW;
Winbond Electronics Corp., Taichung City, TW;
Abstract
A memory device and a data erasing method are provided. The data erasing method includes: performing a first data erasing operation on a memory block, wherein the memory block includes a first word line to an Nth word line, and N is a positive integer greater than 1; performing an erase verification operation on the first word line to the Nth word line of the memory block one by one sequentially; finding a failed word line of a memory cell where a first verification failure occurs in the erase verification operation; and making the failed word line to the Nth word line at least one selected word line, making remaining word lines at least one non-selected word line, masking the at least one non-selected word line, and performing a second data erasing operation on a memory cell of the at least one selected word line.