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. 31, 2022
Filed:
Oct. 12, 2020
SK Hynix Inc., Icheon-si Gyeonggi-do, KR;
Jong Hoon Lee, Icheon-si Gyeonggi-do, KR;
SK hynix Inc., Icheon-si Gyeonggi-do, KR;
Abstract
A memory device includes a cell string, a peripheral circuit and a control logic. The cell string includes a select transistor and a plurality of memory cells, and further includes a plurality of dummy cells, wherein the plurality of dummy cells are coupled in series between the select transistor and the plurality of memory cells. The peripheral circuit configured to perform a dummy program operation on the plurality of dummy cells. The control logic configured to control the peripheral circuit so that the plurality of dummy cells have different threshold voltage distributions during the dummy program operation.