Patent ID: 8785237
Filing Date: 2014-07-22
Classification: H01L

Abstract:
1. A method of forming a variable resistance memory device comprising: forming electrically insulating material having an opening therein on an upper surface of a substrate, wherein the opening has depth in a direction perpendicular to the upper surface of the substrate, length in a first direction parallel to the upper surface, and width in a second direction parallel to the upper surface and perpendicular to the first direction, and the opening is oblong in a bird's eye view in the first direction parallel to the upper surface of the substrate; and filling the opening completely with material, comprising antimony and tellurium, while the material is in an amorphous state to thereby form a variable resistance layer, in the opening, which is also oblong in a bird's eye view in the first direction parallel to the upper surface of the substrate, wherein the filling of the opening completely comprises depositing an antimony-tellurium compound, comprising Sb