MULTI-LAYER HARDMASK ETCH PROCESSES
    2.
    发明申请
    MULTI-LAYER HARDMASK ETCH PROCESSES 审中-公开
    多层HARDMASK蚀刻工艺

    公开(公告)号:WO2017052637A1

    公开(公告)日:2017-03-30

    申请号:PCT/US2015/052436

    申请日:2015-09-25

    CPC classification number: H01L43/12

    Abstract: Many silicon wafers include a mixture of structures including a first number of first structures, such as memory elements, having a first height and high component density and a second number of second structures, such as logic elements, having a second height that is greater than the first height and low component density. An etch process may be used to achieve the high component density using a multi-layer hardmask in which a first hardmask is formed on a surface of the semiconductor wafer. After forming the first hardmask, an etch process may be used to provide or otherwise facilitate the fabrication of a first number of first structures having a relatively high component density. A second hardmask may be selectively fabricated on at least a portion of the first hardmask. The combined thickness of first hardmask and the second hardmask may approximately equal the height of the second structures.

    Abstract translation: 许多硅晶片包括包括第一数量的第一结构(诸如具有第一高度和高分量密度的存储元件)和第二数量的第二结构(诸如逻辑元件)的结构的混合物,其具有大于 第一高度和低分量密度。 可以使用蚀刻工艺来实现使用在半导体晶片的表面上形成第一硬掩模的多层硬掩模来实现高分量密度。 在形成第一硬掩模之后,可以使用蚀刻工艺来提供或以其它方式制造具有相对高的组分密度的第一数量的第一结构。 可以在第一硬掩模的至少一部分上选择性地制造第二硬掩模。 第一硬掩模和第二硬掩模的组合厚度可以近似等于第二结构的高度。

    STEPPED MAGNETIC TUNNEL JUNCTION DEVICES, METHODS OF FORMING THE SAME, AND DEVICES INCLUDING THE SAME
    8.
    发明申请
    STEPPED MAGNETIC TUNNEL JUNCTION DEVICES, METHODS OF FORMING THE SAME, AND DEVICES INCLUDING THE SAME 审中-公开
    步进磁铁隧道结构装置及其制造方法及其装置

    公开(公告)号:WO2017052573A1

    公开(公告)日:2017-03-30

    申请号:PCT/US2015/052148

    申请日:2015-09-25

    CPC classification number: H01L43/12 H01L43/08

    Abstract: Technologies for manufacturing spin transfer torque memory (STTM) elements are disclosed. In some embodiments, the technologies include methods for forming a step proximate an interface between a free magnetic layer and a dielectric layer of a magnetic tunnel junction. In some embodiments, the step may be defined by a spacer material, which may also serve to control the slope of the sidewalls of the dielectric layer and a fixed magnetic layer during the production of the device. As a result, an offset field exhibited by the STTM element may be reduced or even eliminated. Devices and systems including such STTM elements are also described.

    Abstract translation: 公开了用于制造自旋转移转矩存储器(STTM)元件的技术。 在一些实施例中,技术包括用于形成靠近磁性隧道结的自由磁性层和电介质层之间的界面的台阶的方法。 在一些实施例中,该步骤可以由间隔物材料限定,间隔物材料也可以用于在制造装置期间控制电介质层的侧壁的斜率和固定的磁性层。 结果,可以减少或甚至消除由STTM元件展示的偏移场。 还描述了包括这种STTM元件的装置和系统。

    TECHNIQUES FOR FORMING SPIN-TRANSFER TORQUE MEMORY HAVING A DOT-CONTACTED FREE MAGNETIC LAYER
    9.
    发明申请
    TECHNIQUES FOR FORMING SPIN-TRANSFER TORQUE MEMORY HAVING A DOT-CONTACTED FREE MAGNETIC LAYER 审中-公开
    形成具有无接触自由磁层的转子转矩记忆体的技术

    公开(公告)号:WO2015147855A1

    公开(公告)日:2015-10-01

    申请号:PCT/US2014/032138

    申请日:2014-03-28

    CPC classification number: H01L43/08 G11C11/161 H01L43/02 H01L43/12

    Abstract: Techniques are disclosed for fabricating a self-aligned spin-transfer torque memory (STTM) device with a dot-contacted free magnetic layer. In some embodiments, the disclosed STTM device includes a first dielectric spacer covering sidewalls of an electrically conductive hardmask layer that is patterned to provide an electronic contact for the STTM's free magnetic layer. The hardmask contact can be narrower than the free magnetic layer. The first dielectric spacer can be utilized in patterning the STTM's fixed magnetic layer. In some embodiments, the STTM further includes an optional second dielectric spacer covering sidewalls of its free magnetic layer. The second dielectric spacer can be utilized in patterning the STTM's fixed magnetic layer and may serve, at least in part, to protect the sidewalls of the free magnetic layer from redepositing of etch byproducts during such patterning, thereby preventing electrical shorting between the fixed magnetic layer and the free magnetic layer.

    Abstract translation: 公开了用于制造具有点接触自由磁性层的自对准自旋转移转矩存储器(STTM)装置的技术。 在一些实施例中,所公开的STTM装置包括覆盖导电硬掩模层的侧壁的第一介电间隔物,其被图案化以提供用于STTM自由磁性层的电子接触。 硬掩模接触可以比自由磁性层更窄。 第一介电间隔物可用于图案化STTM的固定磁性层。 在一些实施例中,STTM还包括覆盖其自由磁性层的侧壁的可选的第二电介质间隔物。 第二电介质间隔物可以用于图案化STTM的固定磁性层,并且可以至少部分地用于保护自由磁性层的侧壁在这种图案化期间重新沉积蚀刻副产物,从而防止固定磁性层 和自由磁性层。

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