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132 条记录 (耗时 0.028 秒)

    Method to make a planar writer with low D.C. coil resistance
    82.
    发明授权
    Method to make a planar writer with low D.C. coil resistance 失效
    具有低直流线圈电阻的平面刻录机的方法

    公开(公告)号：US07038880B2

    公开(公告)日：2006-05-02

    申请号：US10633132

    申请日：2003-08-01

    申请人： Cherng-Chyi Han ,  Danning Yang ,  Mao-Min Chen

    发明人： Cherng-Chyi Han ,  Danning Yang ,  Mao-Min Chen

    IPC分类号： G11B5/147

    CPC分类号： G11B5/3136 ,  G11B5/127 ,  G11B5/147 ,  G11B5/31 ,  G11B5/3196

    摘要： An inductive-type write head and its method of fabrication are disclosed. The write head has a vertically separated two-element planar coil of reduced resistance which is the result of forming the lower of the two coils with windings of a greater height and substantially larger cross-sectional area than those of the upper coil. The formation of a lower coil with greater height is possible because of a surface planarization that allows separating the coils by an alumina layer of minimal thickness. This method allows the reduction of coil resistance without the necessity of enlarging the head dimensions. The reduced resistance results in lower power consumption and the elimination of pole tip protrusion caused by excessive heating during operation.

    摘要翻译： 公开了一种电感式写入头及其制造方法。 写头具有具有降低的电阻的垂直分离的两元件平面线圈，其是形成两个线圈中较低的线圈的结果，其绕组具有比上部线圈的更大的高度和大得多的横截面积的绕组。 由于表面平坦化，允许通过最小厚度的氧化铝层分离线圈，所以形成较高高度的下线圈是可能的。 该方法允许减小线圈电阻而不需要扩大头部尺寸。 降低的电阻导致较低的功率消耗和由于操作期间的过度加热而导致的极尖突起的消除。

    Composite shared pole design for magnetoresistive merged heads
    83.
    发明授权
    Composite shared pole design for magnetoresistive merged heads 失效
    用于磁阻合并头的复合共享极设计

    公开(公告)号：US07012789B2

    公开(公告)日：2006-03-14

    申请号：US10131675

    申请日：2002-04-24

    申请人： Kochan Ju ,  Cherng-Chyi Han ,  Po-Kang Wang ,  Mao-Min Chen ,  Chun Liu ,  Jei Wei Chang

    发明人： Kochan Ju ,  Cherng-Chyi Han ,  Po-Kang Wang ,  Mao-Min Chen ,  Chun Liu ,  Jei Wei Chang

    IPC分类号： G11B5/127

    CPC分类号： G11B5/3912 ,  G11B5/3967 ,  Y10T29/49044 ,  Y10T29/49046

    摘要： A merged read/write magnetic recording head comprises a low magnetic moment first magnetic shield layer over a substrate. A read gap layer with a magnetoresistive head is formed over the first shield layer. A shared pole comprises a low magnetic moment second magnetic shield layer plated on a sputtered seed PLM layer over the read gap layer, a non-magnetic layer plated over the PLM layer and a HMM lower pole layer plated over the second magnetic shield layer. A write gap layer is formed over the first high magnetic moment pole layer of the shared pole. An upper pole comprises a high magnetic moment pole layer over the write gap layer.

    摘要翻译： 合并的读/写磁记录头包括在衬底上的低磁矩第一磁屏蔽层。 在第一屏蔽层上形成具有磁阻头的读取间隙层。 共享极包括电镀在读取间隙层上的溅射种子PLM层上的低磁矩第二磁屏蔽层，镀在PLM层上的非磁性层和镀在第二磁屏蔽层上的HMM下极层。 在共享极的第一高磁矩极点上形成写间隙层。 上极包括写间隙层上的高磁矩极点层。

    Magnetic write head having a wider trailing edge pole structure
    85.
    发明申请
    Magnetic write head having a wider trailing edge pole structure 失效
    具有较宽后缘极结构的磁写头

    公开(公告)号：US20060012915A1

    公开(公告)日：2006-01-19

    申请号：US11229160

    申请日：2005-09-16

    申请人： Cherng-Chyi Han ,  Mao-Min Chen ,  Po Wang ,  Fenglin Liu

    发明人： Cherng-Chyi Han ,  Mao-Min Chen ,  Po Wang ,  Fenglin Liu

    IPC分类号： G11B5/147

    CPC分类号： G11B5/3163 ,  G11B5/3116 ,  G11B5/3967 ,  Y10T29/49032

    摘要： A trimmed upper pole piece for a magnetic write head, said pole piece having a tapered profile that is widest at its trailing edge. Such a pole piece is capable of writing narrow tracks with sharply and well defined patterns and minimal overwriting of adjacent tracks. The necessary taper is produced by using NiCr, NiFeCr, Rh or Ru as write gap filling materials which have an etch rate which is substantially equal to the etch rate of the other layers forming the pole piece and are highly corrosion resistant. As a result, the write gap does not protrude to mask the effects of the ion-beam etch used to form the taper.

    摘要翻译： 用于磁写头的经修剪的上极片，所述极片具有在其后缘处最宽的锥形轮廓。 这样的极片能够以清晰明确的图案和相邻轨迹的最小重写来写入窄轨道。 通过使用NiCr，NiFeCr，Rh或Ru作为写入间隙填充材料产生必要的锥度，其具有基本上等于形成极片的其它层的蚀刻速率的蚀刻速率并且具有高耐腐蚀性。 结果，写入间隙不会突出以掩盖用于形成锥形的离子束蚀刻的效果。

    Novel underlayer for high performance magnetic tunneling junction MRAM
    86.
    发明申请
    Novel underlayer for high performance magnetic tunneling junction MRAM 有权
    用于高性能磁隧道结MRAM的新型底层

    公开(公告)号：US20060002184A1

    公开(公告)日：2006-01-05

    申请号：US10881445

    申请日：2004-06-30

    申请人： Liubo Hong ,  Cheng Horng ,  Mao-Min Chen ,  Ru-Yin Tong

    发明人： Liubo Hong ,  Cheng Horng ,  Mao-Min Chen ,  Ru-Yin Tong

    IPC分类号： G11C11/14

    CPC分类号： H01L43/12 ,  B82Y10/00 ,  B82Y25/00 ,  B82Y40/00 ,  G01R33/09 ,  G01R33/093 ,  G01R33/098 ,  G11B5/3906 ,  G11B5/3909 ,  G11C11/161 ,  G11C11/1673 ,  H01F10/30 ,  H01F10/3254 ,  H01F10/3259 ,  H01F10/3272 ,  H01F10/3295 ,  H01F41/307 ,  H01L43/08 ,  H01L43/10 ,  Y10T428/1114

    摘要： An MRAM structure is disclosed in which the bottom electrode has an amorphous TaN capping layer to consistently provide smooth and dense growth for AFM, pinned, tunnel barrier, and free layers in an overlying MTJ. Unlike a conventional Ta capping layer, TaN is oxidation resistant and has high resistivity to avoid shunting of a sense current caused by redeposition of the capping layer on the sidewalls of the tunnel barrier layer. Alternatively, the α-TaN layer is the seed layer in the MTJ. Furthermore, the seed layer may be a composite layer comprised of a NiCr, NiFe, or NiFeCr layer on the α-TaN layer. An α-TaN capping layer or seed layer can also be used in a TMR read head. An MTJ formed on an α-TaN capping layer has a high MR ratio, high Vb, and a RA similar to results obtained from MTJs based on an optimized Ta capping layer.

    摘要翻译： 公开了一种MRAM结构，其中底部电极具有无定形TaN覆盖层，以一致地提供在覆盖的MTJ中的AFM，固定，隧道势垒和自由层的平滑且致密的生长。 与传统的Ta覆盖层不同，TaN是抗氧化的并且具有高电阻率以避免由于覆盖层在隧道势垒层的侧壁上的再沉积引起的感测电流的分流。 或者，α-TaN层是MTJ中的种子层。 此外，种子层可以是由α-TaN层上的NiCr，NiFe或NiFeCr层构成的复合层。 也可以在TMR读取头中使用α-TaN覆盖层或种子层。 在α-TaN覆盖层上形成的MTJ具有高MR比，高Vb和RA，其类似于基于优化的Ta覆盖层的MTJ获得的结果。

    Two-piece magnetic shield having improved heat dissipation
    89.
    发明申请
    Two-piece magnetic shield having improved heat dissipation 有权
    具有改善散热性能的两件式磁屏蔽

    公开(公告)号：US20050094319A1

    公开(公告)日：2005-05-05

    申请号：US10696431

    申请日：2003-10-29

    申请人： Cherng-Chyi Han ,  Rod Lee ,  Mao-Min Chen ,  Pokang Wang

    发明人： Cherng-Chyi Han ,  Rod Lee ,  Mao-Min Chen ,  Pokang Wang

    IPC分类号： G11B5/127 ,  G11B5/31 ,  G11B5/33

    CPC分类号： G11B5/3136 ,  G11B5/3133 ,  Y10T29/49039 ,  Y10T29/49043 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

    摘要： Problems such as thermal pole tip protrusion result from thermal mismatch between the alumina and pole material during the writing process. This, and similar problems due to inadequate heat dissipation, have been overcome by dividing the bottom shield into two pieces both of which sit on top of a non-magnetic heat sink. Heat generated by the coil during writing is transferred to the non-magnetic heat sink whence it gets transferred to the substrate. With this approach, the head not only benefits from less field disturbance due to the small shield but also improves heat dissipation from the additional heat sink

    摘要翻译： 在写入过程中，由于氧化铝和极材料之间的热失配，导致热极尖突出的问题。 通过将底部屏蔽分成两个位于非磁性散热器顶部的两个部件，已经克服了由于不充分散热引起的这种和类似的问题。 在写入期间由线圈产生的热量被传递到非磁性散热器，因为它被传送到基板。 采用这种方法，由于小屏蔽，头部不但受益于较少的场干扰，还可以改善附加散热器的散热

    Low DC coil resistance planar writer
    90.
    发明申请
    Low DC coil resistance planar writer 失效
    低直流线圈电阻平面写入器

    公开(公告)号：US20050024770A1

    公开(公告)日：2005-02-03

    申请号：US10633133

    申请日：2003-08-01

    申请人： Cherng Chyi Han ,  Mao-Min Chen

    发明人： Cherng Chyi Han ,  Mao-Min Chen

    IPC分类号： G11B5/147 ,  G11B5/31

    CPC分类号： G11B5/3103 ,  Y10T29/49032

    摘要： Present processes used for planarizing a cavity filled with a coil and hard baked photoresist require that a significant amount of the thickness of the coils be removed. This increases the DC resistance of the coil. In the present invention, CMP is terminated as soon as the coils are exposed, allowing their full thickness to be retained and resulting in minimum DC resistance. Application of this process to the manufacture of a planar magnetic write head is described.

    摘要翻译： 用于平坦化填充有线圈和硬烘烤光致抗蚀剂的空腔的现有方法需要去除大量的线圈厚度。 这增加了线圈的直流电阻。 在本发明中，一旦线圈暴露，CMP就终止，允许其保持其全部厚度并且导致最小的直流电阻。 描述了该方法在平面磁写头的制造中的应用。