Patent ID: 8269208
Filing Date: 2012-09-18
Classification: H01L

Abstract:
1. A memory device comprising: a phase-change material having an upper surface and a lower surface; a first electrode disposed adjacent to and in electrical communication with the lower surface of the phase-change material; a second electrode disposed adjacent to and in electrical communication with the upper surface of the phase-change material; a first insulator having an upper surface, a lower surface and a hole therethrough, wherein the first electrode is arranged within the hole, wherein the first electrode includes a first, lower end and a second, upper end, wherein the first, lower end of the first electrode is arranged proximate the lower surface of the first insulator, wherein the second, upper end of the first electrode is arranged proximate the upper surface of the first insulator, wherein the second, upper end of the first electrode flares radially outwardly along a length of the first electrode from the first, lower end to the second, upper end and terminates to form a first contact region, wherein the first contact region includes