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. 18, 2016
Filed:
Dec. 15, 2014
Applicant:
SK Hynix Inc., Gyeonggi-do, KR;
Inventor:
Ga-Ram Park, Gyeonggi-do, KR;
Assignee:
SK Hynix Inc., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 (2006.01); G11C 11/406 (2006.01); G11C 29/00 (2006.01);
U.S. Cl.
CPC ...
G11C 11/40618 (2013.01); G11C 29/783 (2013.01);
Abstract
A semiconductor memory device includes a plurality of normal memory mats, one or more of which includes a redundancy word line, a dummy memory mat suitable for performing an operation with an edge memory mat as a pair during an active operation, wherein the edge memory mat is one among the plurality of normal memory mats disposed at an edge, and a refresh control section suitable for controlling refresh operations for the plurality of normal memory mats and the dummy memory mat, and restricting activation of the redundancy word line during a refresh operation for the edge memory mat.