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. 11, 2022
Filed:
Nov. 21, 2018
Seoul National University R&db Foundation, Seoul, KR;
Jihong Kim, Seoul, KR;
Myung Suk Kim, Seoul, KR;
Seoul National University R&DB Foundation, Seoul, KR;
Abstract
A flash memory device according to an embodiment of the inventive concept includes a selection transistor for selecting a cell string; and a plurality of memory cells connected in series to the selection transistor, and the selection transistor is programmed such that a threshold voltage of the selection transistor is higher than a non-selection read voltage Vread, for protecting data stored in at least one of the plurality of memory cells. The flash memory according to an embodiment of the inventive concept adjusts the threshold value of the selection transistor or a dummy memory, thus protecting data permanently or temporarily within a short time and recovering original data easily without data loss if necessary.