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:
Oct. 12, 2021
Filed:
Jul. 30, 2020
Applicant:
Winbond Electronics Corp., Taichung, TW;
Inventor:
Shinya Okuno, Kanagawa, JP;
Assignee:
Winbond Electronics Corp., Taichung, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/406 (2006.01); G11C 11/408 (2006.01);
U.S. Cl.
CPC ...
G11C 11/40611 (2013.01); G11C 11/4085 (2013.01); G11C 11/4087 (2013.01); G11C 11/40622 (2013.01);
Abstract
A memory device and a refresh method thereof are provided. The memory device includes a memory array and a controller. The memory array includes a plurality of normal areas and a redundancy area near the plurality of normal areas. The redundancy area includes a plurality of redundancy word lines. A plurality of boundary word lines are arranged near boundaries between the plurality of normal areas and the redundancy area. The controller refreshes the plurality of redundancy word lines in sequence, and refreshes the plurality of boundary word lines in sequence after refreshing the plurality of redundancy word lines in sequence.