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.

Date of Patent:
Dec. 26, 2017

Filed:

Oct. 18, 2016
Applicant:

Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do, KR;

Inventor:

Ho-Jun Lee, Uiwang-si, KR;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 17/16 (2006.01); G11C 29/00 (2006.01); G11C 7/06 (2006.01); G11C 7/10 (2006.01);
U.S. Cl.
CPC ...
G11C 29/78 (2013.01); G11C 7/06 (2013.01); G11C 7/1012 (2013.01); G11C 17/16 (2013.01);
Abstract

A semiconductor memory device includes a normal memory block including a plurality of normal memory cells, a redundant memory block including a plurality of redundant memory cells used to replace defective cells among the normal memory cells, a normal buffer block configured to sense and amplify data stored in the normal memory block, a redundant buffer block configured to sense and amplify data stored in the redundant memory block, a normal latch block configured to fetch data from the normal buffer block and store the data based on a normal control signal, and a redundant latch block configured to selectively fetch data from the redundant buffer block and store the data based on a redundant control signal.


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