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. 09, 2011
Filed:
Aug. 27, 2009
Kazuhiko Kajigaya, Tokyo, JP;
Eiichiro Kakehashi, Tokyo, JP;
Kazuhiko Kajigaya, Tokyo, JP;
Eiichiro Kakehashi, Tokyo, JP;
Elpida Memory, Inc., Tokyo, JP;
Abstract
A semiconductor memory device comprises a memory cell array and a forming controller. The memory cell array includes a plurality of first memory cells each having a structure in which dielectric material is sandwiched between two electrodes, and the memory cell array is divided into a plurality of areas capable of being designated. The forming controller controls to perform 'forming' for the first memory cells in an area selectively designated from the plurality of areas of the memory cell array, and as a result of the forming, the first memory cells are changed to non-volatile second memory cells.