Patent ID: 8227880
Filing Date: 2012-07-24
Classification: G11C,H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate; a switching element formed over a main surface of the semiconductor substrate; an interlayer insulating film covering therewith the switching element; a conductive film formed over the interlayer insulating film; a coupling interconnect for coupling the conductive film to the switching element; a magnetic storage element including a magnetization free layer whose magnetization direction is made variable, and formed over the conductive film; a first interconnect located below the magnetic storage element, extending in a first direction, and capable of changing the magnetization state of the magnetization free layer by a magnetic field generated; and a second interconnect located above the magnetic storage element, extending in a second direction, and capable of changing the magnetization state of the magnetization free layer by a magnetic field generated, wherein the magnetic storage element is provided over the upper surface of the conductive film distant from the coupled position of the conductive film and the coupling interconnect, wherein the first interconnect has a first interconnect body and a first magnetic field shielding layer which is provided so as to cover the bottom surface and side surfaces of the first interconnect body and is opened upward, wherein the first magnetic field shielding layer has a first sidewall portion covering therewith the side surfaces of the first interconnect body and a first bottom wall portion covering therewith the bottom surface of the first interconnect body, and wherein the thickness of the first sidewall portion is greater than that of the first bottom wall portion.