Ring heater for a phase change memory device
    3.
    发明公开
    Ring heater for a phase change memory device 有权
    RingförmigerHeizerfüreinePhasenübergangsspeichervorrichtung

    公开(公告)号:EP1764847A1

    公开(公告)日:2007-03-21

    申请号:EP05108413.5

    申请日:2005-09-14

    Abstract: A ring shaped heater (26) surrounds a chalcogenide region (36) along the length of a cylindrical solid phase portion (35) thereof defining a change phase memory element. The chalcogenide region (36) is formed in a sub-lithographic pore (34), so that a relatively compact structure is achieved. Furthermore, the ring contact between the heater and the cylindrical solid phase portion (35) results in a more gradual transition of resistance versus programming current, enabling multilevel memories to be formed.

    Abstract translation: 环形加热器(26)围绕限定变化相位存储元件的圆柱形固相部分(35)的长度围绕硫族化物区域(36)。 硫族化物区(36)形成在亚光刻孔(34)中,使得获得相对紧凑的结构。 此外,加热器和圆柱形固相部分(35)之间的环接触导致电阻对编程电流的更渐进的转变,从而形成多层存储器。

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