Patent ID: 8785213

Claim:
A method of fabricating a non-volatile memory device, comprising: forming an electrode on a substrate having a word line; forming a sacrificial pattern to partially cover the electrode; forming a sacrificial spacer on a lateral surface of the sacrificial pattern, the sacrificial spacer extending across the electrode, the sacrificial spacer having a first side and a second side opposite the first side; removing the sacrificial pattern to expose the electrode proximal to the first and second sides of the sacrificial spacer; primarily trimming the electrode exposed proximal to the first and second sides of the sacrificial spacer, wherein the electrode is retained under the sacrificial spacer to form a first portion and a second portion facing the first portion; secondarily trimming the second portion of the electrode; removing the sacrificial spacer to expose the first portion of the electrode; and forming a data storage plug on the first portion of the electrode.