Patent ID: 8012790
Filing Date: 2011-09-06
Classification: H01L

Abstract:
1. A method for fabricating a phase change memory pore cell, the method comprising: forming a bottom electrode; forming a first dielectric layer on the bottom electrode; forming a sacrificial layer on the first dielectric layer; forming an isolation layer on the sacrificial layer; forming a second dielectric layer on the isolation layer; forming a via overlying the bottom electrode, the via extending to the sacrificial layer; etching through the sacrificial layer to the first dielectric layer to form a pore defined extending through the sacrificial layer and the first dielectric layer; depositing phase change material on the sacrificial layer and into the pore and removing the phase change material formed outside of the pore; removing the sacrificial layer to expose the pore, the pore being vertically aligned; and forming a top electrode over the pore.