Patent ID: 7321508
Filing Date: 2008-01-22
Classification: B82Y,G11C,H01L

Abstract:
1. A magnetic memory device comprising: a plurality of tunnel magnetoresistance effect elements, each comprising at least a magnetization pinned layer in which the direction of magnetization is pinned, a tunnel barrier layer, and a magnetic layer in which the direction of magnetization is variable; a first conducting element formed on one side of each tunnel magnetoresistance effect element with a first insulating layer interposed therebetween; and a second conducting element formed on the other side of each tunnel magnetoresistance effect element, wherein information is written into each tunnel magnetoresistance effect element by applying current to the first conducting element and also to the second conducting element, and written information is read out of each tunnel magnetoresistance effect element through a read wiring having a connection to a secondary wiring, wherein the read wiring is comprised of a contiguous conductive material formed during a different process than a process during which the first and second conducting elements are formed, and wherein said secondary wiring is separated from said tunnel magnetoresistance effect element by at least a layer containing said first conductive element or said second conductive element.