Magnetoresistive random access memory devices and methods for fabricating the same
    1.
    发明授权
    Magnetoresistive random access memory devices and methods for fabricating the same 有权
    磁阻随机存取存储器件及其制造方法

    公开(公告)号:US07169622B2

    公开(公告)日:2007-01-30

    申请号:US10912979

    申请日:2004-08-05

    IPC分类号: H01L21/00

    摘要: Fabricating a magnetoresistive random access memory cell and a structure for a magnetoresistive random access memory cell begins by providing a substrate having a transistor formed therein. A contact element is formed electrically coupled to the transistor and a dielectric material is deposited within an area partially bounded by the contact element. A digit line is formed within the dielectric material, the digit line overlying a portion of the contact element. A conductive layer is formed overlying the digit line and in electrical communication with the contact element.

    摘要翻译: 制造磁阻随机存取存储器单元和用于磁阻随机存取存储单元的结构开始于提供其中形成有晶体管的衬底。 形成电耦合到晶体管的接触元件,并且电介质材料沉积在由接触元件部分界定的区域内。 在电介质材料内形成数字线,数字线覆盖接触元件的一部分。 导电层形成在数字线上方并与接触元件电连通。

    Magnetoresistive random access memory devices and methods for fabricating the same
    2.
    发明授权
    Magnetoresistive random access memory devices and methods for fabricating the same 有权
    磁阻随机存取存储器件及其制造方法

    公开(公告)号:US06798004B1

    公开(公告)日:2004-09-28

    申请号:US10421095

    申请日:2003-04-22

    IPC分类号: H01L2976

    摘要: Fabricating a magnetoresistive random access memory cell and a structure for a magnetoresistive random access memory cell begins by providing a substrate having a transistor formed therein. A contact element is formed electrically coupled to the transistor and a dielectric material is deposited within an area partially bounded by the contact element. A digit line is formed within the dielectric material, the digit line overlying a portion of the contact element. A conductive layer is formed overlying the digit line and in electrical communication with the contact element.

    摘要翻译: 制造磁阻随机存取存储器单元和用于磁阻随机存取存储单元的结构开始于提供其中形成有晶体管的衬底。 形成电耦合到晶体管的接触元件,并且电介质材料沉积在由接触元件部分界定的区域内。 在电介质材料内形成数字线,数字线覆盖接触元件的一部分。 导电层形成在数字线上方并与接触元件电连通。

    Methods for fabricating MRAM device structures
    3.
    发明授权
    Methods for fabricating MRAM device structures 有权
    制造MRAM器件结构的方法

    公开(公告)号:US06911156B2

    公开(公告)日:2005-06-28

    申请号:US10417537

    申请日:2003-04-16

    摘要: A method for fabricating a magnetic memory element structure comprises providing a dielectric layer having a conducting via. A first magnetic layer is formed overlying the dielectric layer and is in electrical communication with the conducting via. A non-magnetic layer and a second magnetic layer are formed overlying the first magnetic layer. A first conductive layer is deposited overlying the second magnetic layer and is patterned. A portion of the second magnetic layer is exposed and is transformed to form an inactive portion and an active portion. The active portion comprises a portion of a memory element and the inactive portion comprises an insulator. A sidewall spacer is formed about at least one sidewall of the first conductive layer and a masking tab is formed that overlies a portion of the memory element and extends to overlie at least a portion of the conducting via.

    摘要翻译: 一种用于制造磁存储元件结构的方法,包括提供具有导电通孔的电介质层。 第一磁性层形成在电介质层上并与导电通孔电连通。 在第一磁性层上形成非磁性层和第二磁性层。 将第一导电层沉积在第二磁性层上并被图案化。 第二磁性层的一部分被暴露并被变换以形成非活性部分和活性部分。 有源部分包括存储元件的一部分,非活性部分包括绝缘体。 围绕第一导电层的至少一个侧壁形成侧壁间隔物,并且形成覆盖存储元件的一部分并延伸以覆盖导电通孔的至少一部分的掩蔽突片。

    Methods for contacting conducting layers overlying magnetoelectronic elements of MRAM devices
    4.
    发明授权
    Methods for contacting conducting layers overlying magnetoelectronic elements of MRAM devices 有权
    用于接触覆盖MRAM器件的电磁元件的导电层的方法

    公开(公告)号:US07476329B2

    公开(公告)日:2009-01-13

    申请号:US11050191

    申请日:2005-02-02

    IPC分类号: H01L21/00

    摘要: A method for contacting an electrically conductive layer overlying a magnetoelectronics element includes forming a memory element layer overlying a dielectric region. A first electrically conductive layer is deposited overlying the memory element layer. A first dielectric layer is deposited overlying the first electrically conductive layer and is patterned and etched to form a first masking layer. Using the first masking layer, the first electrically conductive layer is etched. A second dielectric layer is deposited overlying the first masking layer and the dielectric region. A portion of the second dielectric layer is removed to expose the first masking layer. The second dielectric layer and the first masking layer are subjected to an etching chemistry such that the first masking layer is etched at a faster rate than the second dielectric layer. The etching exposes the first electrically conductive layer.

    摘要翻译: 用于使覆盖磁电元件的导电层接触的方法包括形成覆盖电介质区域的存储元件层。 沉积在存储元件层上的第一导电层。 第一电介质层沉积在第一导电层上,并被图案化和蚀刻以形成第一掩模层。 使用第一掩模层,蚀刻第一导电层。 沉积第二介电层,覆盖第一掩模层和电介质区域。 去除第二介电层的一部分以露出第一掩模层。 对第二介电层和第一掩模层进行蚀刻化学处理,使得以比第二介电层更快的速率蚀刻第一掩模层。 蚀刻暴露第一导电层。

    Magnetoresistive random access memory device and method of fabrication thereof
    6.
    发明授权
    Magnetoresistive random access memory device and method of fabrication thereof 失效
    磁阻随机存取存储器件及其制造方法

    公开(公告)号:US06518071B1

    公开(公告)日:2003-02-11

    申请号:US10109429

    申请日:2002-03-28

    IPC分类号: H01L2100

    CPC分类号: H01L43/12

    摘要: A method of fabricating a MRAM device with a taper comprising the steps of providing a substrate, forming a dielectric region with positioned on the substrate, patterning and isotropically etching through the dielectric region to the substrate to form a trench, depositing the MRAM device within the trench wherein the MRAM device includes a first ferromagnetic region with a width positioned on the substrate, a non-ferromagnetic spacer layer with a width positioned on the first ferromagnetic region, and a second ferromagnetic region with a width positioned on the non-ferromagnetic spacer layer wherein the taper is formed by making the width of the first ferromagnetic region greater than the width of the non-ferromagnetic spacer layer, and the width of the non-ferromagnetic spacer layer greater than the width of the second ferromagnetic region so that the first ferromagnetic region is separated from the second ferromagnetic region.

    摘要翻译: 一种制造具有锥形的MRAM器件的方法,包括以下步骤:提供衬底,形成位于衬底上的电介质区域,对介质区域进行图案化和各向同性地蚀刻到衬底以形成沟槽,将MRAM器件沉积在 沟槽,其中MRAM器件包括位于衬底上的宽度的第一铁磁区域,具有位于第一铁磁区域上的宽度的非铁磁间隔层,以及位于非铁磁间隔层上的宽度的第二铁磁区域 其中所述锥形通过使所述第一铁磁性区域的宽度大于所述非铁磁间隔层的宽度而形成,并且所述非铁磁隔离层的宽度大于所述第二铁磁区域的宽度,使得所述第一铁磁性区域 区域与第二铁磁区域分离。