Patent ID: 9224784
Filing Date: 2015-12-29
Classification: H01L

Abstract:
1. A nonvolatile memory device comprising: a plurality of impurity regions that are formed in a substrate; a first contact that is electrically connected to at least one of the impurity regions; a second contact that is electrically connected to at least one of the impurity regions; a first information storage portion that is formed at a first height from the substrate and electrically connected to the first contact; a second information storage portion that is formed at a second height, which is different from the first height, from the substrate and electrically connected to the second contact; and an insulating layer pattern that is interposed between the substrate and the first information storage portion and between the substrate and the second information storage portion, wherein the insulating layer pattern comprises a protrusion that is defined by a trench formed in the insulating layer pattern, wherein the first information storage portion is formed on the protrusion to expose side surfaces of the protrusion, and wherein the second information storage portion is formed on a bottom surface of the trench.