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. 01, 2014
Filed:
May. 30, 2012
Yuichiro Ikeda, Hyogo, JP;
Kazuhiko Shimakawa, Osaka, JP;
Ryotaro Azuma, Osaka, JP;
Ken Kawai, Osaka, JP;
Yuichiro Ikeda, Hyogo, JP;
Kazuhiko Shimakawa, Osaka, JP;
Ryotaro Azuma, Osaka, JP;
Ken Kawai, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A variable resistance nonvolatile memory device including memory cells provided at cross-points of first signal lines and second signal lines, each memory cell including a variable resistance element and a current steering element connected to the variable resistance element in series, the variable resistance nonvolatile memory device including a write circuit, a row selection circuit, and a column selection circuit, wherein the write circuit: sequentially selects blocks in an order starting from a block farthest from at least one of the row selection circuit and the column selection circuit and finishing with a block closest to the at least one of the row selection circuit and the column selection circuit; and performs, for each of the selected blocks, initial breakdown on each memory cell included in the selected block.