Patent ID: 7397060
Filing Date: 2008-07-08
Classification: H01L,Y10S

Abstract:
1. A memory device, comprising: a pillar shaped structure including bottom electrode member having a top surface and sides, and a pipe-shaped member comprising a programmable resistive material, the pipe shaped member having a sidewall with an inside surface and an outside surface and having a top surface intersecting the sidewall, wherein the outside surface of the pipe-shaped member and the sides of the bottom electrode member are vertically aligned and have substantially equal widths at the top surface of the bottom electrode member; a dielectric body surrounding the pipe-shaped member and the sides of the bottom electrode member; a top electrode member in contact with the top surface of the pipe-shaped member; and a thermal insulator inside the inside surface of the pipe-shaped member, the thermally insulating member comprising a material having a thermal conductivity less than that of the top electrode member.