Patent ID: 8765564
Filing Date: 2014-07-01
Classification: H01L

Abstract:
1. A method of forming a variable resistive memory device, the method comprising: forming a conductive pattern and a first insulation pattern on a substrate, such that the conductive pattern alternates with the first insulation pattern along a first direction on a substrate, the first direction being parallel with a surface of the substrate; forming a preliminary sacrificial pattern on the conductive pattern, such that the preliminary sacrificial pattern contacts a sidewall of the first insulation pattern; etching the conductive pattern using the preliminary sacrificial pattern as an etch mask, thereby forming a preliminary bottom electrode pattern; patterning the preliminary sacrificial pattern and the preliminary bottom electrode pattern to form a sacrificial pattern and a bottom electrode pattern, such that at least two portions of the sacrificial pattern are separated from each other along a second direction intersecting the first direction, and at least two portions of the bottom electrode pattern are separated from each other along the second direction; and replacing the sacrificial pattern with a variable resistive pattern.