Semiconductor memory device having a variable resistence layer

Abstract

An electronic device including a semiconductor memory is provided. The semiconductor memory includes: a substrate having a substantially horizontal upper surface; first to Nth layers (where N is a natural number of two or more) disposed in horizontal layers on the substrate and spaced apart from each other above the substrate in a vertical direction, wherein each of the first to Nth layers includes a plurality of conductive lines; an insulating layer disposed to fill spaces between the conductive lines; a hole having sidewalls that extends in the vertical direction through the conductive lines of the first to Nth layers and the insulating layer therebetween; a variable resistance layer disposed on the sidewalls of the hole; and a conductive pillar disposed to fill the hole in which the variable resistance layer is formed.

Dependencies are inferred from the claim text.