Patent ID: 9006701
Filing Date: 2015-04-14
Classification: H01L

Abstract:
1. A non-volatile memory device comprising: a substrate; first wires extending in a first direction on and above a first plane parallel to a main surface of the substrate; second wires extending in a second direction crossing the first direction, on and above a second plane which is parallel to the main surface of the substrate and more distant from the substrate than the first plane; third wires extending in the second direction on and above a fourth plane which is parallel to the main surface of the substrate and more distant from the substrate than the second plane; and memory cells provided to correspond to three-dimensional cross-points of the first wires and the third wires, respectively, wherein: each of the memory cells includes one transistor and one variable resistance element, the transistor is provided on and above the substrate, and includes a first main electrode, a second main electrode, and a control electrode, the control electrode is connected to or integral with corresponding one of the first wires, the variable resistance element is placed on and above a third plane which is parallel to the main surface of the substrate, more distant from the substrate than the second plane and closer to the substrate than the fourth plane, and the variable resistance element includes a lower electrode, an upper electrode and a variable resistance layer disposed between the lower electrode and the upper electrode, the upper electrode is connected to corresponding one of the third wires, the non-volatile memory device further comprises: the second main electrode and the lower electrode are connected to each other via the second contact plug and the third contact plug.