Patent ID: 8581424
Filing Date: 2013-11-12
Classification: G11C,H01L

Abstract:
1. An information recording/reproducing device comprising: a memory cell array area and an alignment mark area, the memory cell array area comprising: an insulating layer on a semiconductor substrate; a first interconnect layer filled in a first groove of the insulating layer; a first stacked layer structure on the first interconnect layer, the first stacked layer structure including a storage layer and an electrode layer; and a second interconnect layer on the first stacked layer structure; the alignment mark area comprising: the insulating layer; a conductive layer as an alignment mark filled in a second groove of the insulating layer; and a second stacked layer structure on the insulating layer, the second stacked layer structure surrounding the conductive layer and including the storage layer and the electrode layer; wherein all of the layers in the first and second stacked layer structures comprise a material with a permeability of visible light of 1% or more.