Patent ID: 8644059
Filing Date: 2014-02-04
Classification: G11C

Abstract:
1. A semiconductor storage device comprising: a magnetic tunnel junction element comprising a pinned layer having a fixed magnetization orientation, a tunnel dielectric film provided on the pinned layer, and a recording layer provided on the tunnel dielectric film and having a variable magnetization orientation; a first wiring electrically connected to the pinned layer; an upper electrode electrically connected to the recording layer; a cell transistor having one end electrically connected to the recording layer via the upper electrode; and a second wiring electrically connected to the other end of the cell transistor, and provided below the first wiring so as to be electrically isolated from the first wiring, wherein a plurality of the magnetic tunnel junction elements and a plurality of the cell transistors are provided, the semiconductor storage device further comprises a plurality of active areas separated to correspond to the cell transistors, respectively, and extending in a first direction substantially orthogonal to an extending direction of gates of the cell transistors, the active areas are arranged in the first direction and constitute a plurality of active area columns, the two active area columns adjacent in a second direction substantially parallel to the extending direction of the gates of the cell transistors are arranged so as to be half-pitch staggered in the first direction, and as viewed from above surfaces of the active areas, the magnetic tunnel junction elements is respectively arranged to overlap with one end of each active area, and the first and second wirings extend while being folded back in a direction inclined with respect to the first and second directions in order to overlap with the magnetic tunnel junction elements alternately in the two adjacent active area columns.