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:
Aug. 28, 2012
Filed:
Sep. 21, 2009
Kenji Tsuchida, Kawasaki, JP;
Kenji Tsuchida, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A resistance change memory of an aspect of the present invention including memory cells including resistance change memory element, word lines connected to the memory cells, a row decoder which activates the word lines, redundant cells used instead of defective cells, a redundant word line connected to redundant cells, a redundant row decoder which activates the redundant word line, a control circuit in which defect address information indicating the word line connected to the defective cell is stored and which remedies the defective cell, and regions provided in a memory cell array and a redundant cell array and identified based on column address information, wherein the control circuit replaces a part of the word line connected to the defective cell with a part of the redundant word line in accordance with each of the regions, and allows the redundant row decoder to activate the replaced redundant word line.