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:
Jul. 31, 2007
Filed:
Aug. 26, 2005
Thomas Roehr, Aschheim, DE;
Thomas Roehr, Aschheim, DE;
Infineon Technologies AG, Munich, DE;
Abstract
In a memory circuit having memory cells which are connected in series between a ground line PL and a bit line BL and in each case have a resistance memory element said element having a bipolar switching behavior having an anode electrode and a cathode electrode, and a drive transistor connected in parallel with the resistance memory element, the drive transistors of the memory cells in each case are connected to a word line in order to switch the drive transistor on and off in such a way that a current path is formed via the associated drive transistor in a non-activated state of a memory cell and a current path is formed via the associated resistance memory element in an activated state of a memory cell, a first changeover switch being arranged at one end and a second changeover switch at other ends of the series of memory cells in order alternately to produce a connection between the series-connected memory cells and the ground line and the bit line in a manner dependent on an applied address.