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:
Jan. 11, 2005
Filed:
May. 28, 2002
Hisatada Miyatke, Ohtsu, JP;
Toshio Sunaga, Ohtsu, JP;
Kohji Kitamura, Kusatsu, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
An object of the present invention is to provide a memory cell, a memory circuit block, a data writing method, and a data reading method which realize a reduction in the number of metal layers, cost, and the chip size and an increase of production yields and product reliability. A memory cellincluding a metal linecrossing a bit linewithout contact therewith and a second conductive structureconnecting the metal lineand a switching elementis disclosed. A write driver circuitfor driving a write current through the metal lineand a groundare connected to the metal linethrough a switchfor selecting the circuitor the ground