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:
Apr. 24, 2018
Filed:
Mar. 02, 2017
Applicant:
SK Hynix Inc., Gyeonggi-do, KR;
Inventor:
Jung-Hyun Kim, Gyeonggi-do, KR;
Assignee:
SK Hynix Inc., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 8/00 (2006.01); G11C 11/4078 (2006.01); G11C 11/406 (2006.01); G11C 11/4076 (2006.01);
U.S. Cl.
CPC ...
G11C 11/4078 (2013.01); G11C 11/4076 (2013.01); G11C 11/40611 (2013.01);
Abstract
A semiconductor memory device may include: a memory cell region including a plurality of memory cells coupled between a plurality of word lines and a plurality of bit lines; and a refresh control block suitable for performing a first refresh operation onto the plurality of the word lines in response to a refresh signal, counting the number of active signals that are inputted between at least two neighboring refresh signals and when the counted number of the active signals is equal to or greater than a reference number, performing a second refresh operation onto a word line corresponding to a target address.