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    • 4. 发明授权
    • Non-volatile magnetic random access memory
    • 非易失磁性随机存取存储器
    • US06172902B2
    • 2001-01-09
    • US09376714
    • 1999-08-13
    • Jean-Eric WegroweJean-Philippe AnsermetScott E. Gilbert
    • Jean-Eric WegroweJean-Philippe AnsermetScott E. Gilbert
    • G11C1115
    • G11C11/16B82Y10/00G11C2213/81H01L27/222
    • A non-volatile random access memory (NVRAM) of the type with magnetoresistive memory elements (1) connected by sets of non-intersecting conductor sense lines (3, 4) which define the address of each memory element (1) and are connectable to a magnetic write/read recording unit. The memory elements are a plurality of magnetoresistive submicron dots or wires (1) embedded in a membrane (2) through which the submicron dots or wires extend. The sets of non-intersecting conductor sense lines (3, 4) are connected to the opposite ends of the submicron dots or wires (1) on opposite sides of the membrane. Each magnetoresistive submicron dot or wire (1) is composed of ferromagnetic material or a combination of ferromagnetic and non-ferromagnetic materials having at least two magnetic states (“0”; “1”), writeable by passing at an appropriate external field a writing current pulse (iw) in its conductor lines (3, 4, 5) sufficient to switch its magnetic states and readable by passing a an AC or DC current (ir) in its conductor lines below the level for switching its magnetic states.
    • 一种具有磁阻存储器元件(1)的类型的非易失性随机存取存储器(NVRAM),其通过一组不相交的导体感测线(3,4)连接,所述不相交的导体感测线限定每个存储元件(1)的地址,并且可连接到 磁性写/读记录单元。 存储器元件是嵌入在膜(2)中的多个磁阻亚微米点或线(1),亚微米点或线延伸穿过该膜。 不相交的导体感测线(3,4)的组连接到膜的相对侧上的亚微米点或线(1)的相对端。 每个磁阻亚微米点或线(1)由铁磁材料或具有至少两个磁状态(“0”;“1”)的铁磁和非铁磁材料的组合构成,可通过在适当的外部场通过写入 其导体线(3,4,5)中的电流脉冲(iw)足以切换其磁状态并且可通过将其导线中的AC或DC电流(ir)传递到低于用于切换其磁状态的电平来读取。