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:
Nov. 02, 2015
SK Hynix Inc., Gyeonggi-do, KR;
Jeong-Tae Hwang, Gyeonggi-do, KR;
SK Hynix Inc., Gyeonggi-do, KR;
Abstract
A semiconductor memory device includes: a normal cell region having normal cells; a redundancy cell region having first redundancy cells replaced with repair target cells of the normal cells and second redundancy cells which are not replaced with the repair target cells; a fuse unit suitable for programming repair information including replacement information and one of state information and a repair address of the repair target cells; a boot-up unit suitable for outputting the repair information programmed in the fuse unit, resetting the repair information in response to a test control signal, and outputting the reset repair information; an information update unit suitable for generating the test control signal; a test control unit suitable for generating a test address during a redundancy test operation; and a test unit suitable for selectively testing the second redundancy cells in response to the test address.