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. 10, 2016
Filed:
Oct. 01, 2014
Yun-young Lee, Seongnam-si, KR;
Kyo-min Sohn, Yongin-si, KR;
Sang-joon Hwang, Gangnam-gu, KR;
Sung-min Seo, Seoul, KR;
Sang-bo Lee, Yongin-si, KR;
Nak-won Heo, Hwaseong-si, KR;
Yun-Young Lee, Seongnam-si, KR;
Kyo-Min Sohn, Yongin-si, KR;
Sang-Joon Hwang, Gangnam-gu, KR;
Sung-Min Seo, Seoul, KR;
Sang-Bo Lee, Yongin-si, KR;
Nak-Won Heo, Hwaseong-si, KR;
Abstract
A semiconductor memory device includes a memory cell array, a repair control circuit and a refresh control circuit. The memory cell array includes a plurality of memory cells and a plurality of redundancy memory cells. The repair control circuit receives a repair command and performs a repair operation on a first defective memory cell among the plurality of memory cells during a repair mode. The semiconductor memory device may operate in a repair mode in response to the repair command. The refresh control circuit performs a refresh operation on non-defective ones of the plurality of memory cells during the repair mode.