Patent ID: 9053783
Filing Date: 2015-06-09
Classification: G11C,H01L

Abstract:
1. A nonvolatile semiconductor memory device comprising: a semiconductor substrate; a first line disposed above the semiconductor substrate; a first memory cell disposed on a side opposite to the semiconductor substrate with respect to the first line; a second line intersecting with the first line via the first memory cell; a second memory cell disposed on a side opposite to the semiconductor substrate with respect to the second line; and a third line intersecting with the second line via the second memory cell, wherein the first memory cell has a first resistance change layer and a first rectification layer, the second memory cell has a second resistance change layer and a second rectification layer, and a composition of the first resistance change layer is different from a composition of the second resistance change layer, wherein the first resistance change layer is formed of a first carbon-based material, and the second resistance change layer is formed of a metal oxide.