Patent ID: 6855563

Claim:
A method of manufacturing a magnetic memory device, comprising the steps of: forming a first wiring; forming a tunnel magnetoresistance device which comprises a tunnel insulation layer sandwiched between ferromagnetic materials and electrically insulated from said first wiring; and forming a second wiring electrically connected to said tunnel magnetoresistance device; wherein said method comprises the steps of: forming a conductive layer for connecting said tunnel magnetoresistance device to a lower-layer wiring, after the formation of said first wiring and before the formation of said tunnel magnetoresistance device; forming a first mask to be used for forming said tunnel magnetoresistance device; after the formation of said magnetoresistive device, forming a second mask to be used for forming a wiring for connecting said tunnel magnetoresistance device to the lower-layer wiring, said second mask partly or entirely overlapping said first mask; and processing said conductive layer by use of said first mask and said second mask so as thereby form a connection wiring for connecting said tunnel magnetoresistance device to the lower-layer wiring.