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137 条记录 (耗时 0.021 秒)

    Method for making a perpendicular magnetic recording write head with a self aligned stitched write shield
    91.
    发明申请
    Method for making a perpendicular magnetic recording write head with a self aligned stitched write shield 失效
    一种具有自对准缝合写屏蔽的垂直磁记录写头的方法

    公开(公告)号：US20050259356A1

    公开(公告)日：2005-11-24

    申请号：US10849312

    申请日：2004-05-19

    申请人： Cherng-Chyi Han ,  Kenichi Takano

    发明人： Cherng-Chyi Han ,  Kenichi Takano

    IPC分类号： G11B5/127 ,  G11B5/147 ,  G11B5/31

    CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3143 ,  G11B5/3163 ,  Y10T29/49041 ,  Y10T29/49044 ,  Y10T29/49048 ,  Y10T29/4906 ,  Y10T29/49062

    摘要： A perpendicular magnetic recording (PMR) head with single or double coil layers has a small write shield stitched onto a main write shield. The stitched shield allows the main write pole to produce a vertical write field with sharp vertical gradients that is reduced on both sides of the write pole so that adjacent track erasures are eliminated. From a fabrication point of view, both the main pole and the stitched shield are defined and formed using a single photolithographic process, a trim mask and CMP lapping process so that the main shield can be stitched onto a self-aligned main pole and stitched shield.

    摘要翻译： 具有单线圈或双线圈层的垂直磁记录（PMR）头具有缝合在主写屏蔽上的小写写屏蔽。 拼接屏蔽允许主写柱产生垂直写入场，其尖锐的垂直梯度在写入极的两侧减小，从而消除相邻的轨迹擦除。 从制造的角度来看，使用单一光刻工艺，修剪掩模和CMP研磨工艺来限定和形成主极和缝合屏蔽物，使得主屏蔽可以缝合到自对准的主极和缝合屏蔽 。

    Stitched shielded pole structure for a perpendicular magnetic recording write head
    92.
    发明申请
    Stitched shielded pole structure for a perpendicular magnetic recording write head 失效
    用于垂直磁记录写头的拼接屏蔽极结构

    公开(公告)号：US20050219746A1

    公开(公告)日：2005-10-06

    申请号：US10814077

    申请日：2004-03-31

    申请人： Kenichi Takano ,  Cherng-Chyi Han

    发明人： Kenichi Takano ,  Cherng-Chyi Han

    IPC分类号： G11B5/127 ,  G11B5/147 ,  G11B5/31

    CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/3113 ,  G11B5/3143

    摘要： A PMR write head has a stitched shield formation which results in a strong perpendicular write field with sharp vertical gradients. The shape of the stitched shield is determined by two design parameters, d=½(WSWSLE-WMPTE), and TSWS, where WSWSLE is the width of the leading edge of the stitched shield in the ABS plane, WMPTE is the width of the trailing edge of the main magnetic pole in the ABS plane and TSWS is the thickness of the stitched shield. By a proper choice of these parameters, the write field of the head is sharply limited in the cross-track direction, so that adjacent track erasures are eliminated.

    摘要翻译： PMR写头具有缝合的屏蔽结构，其形成具有尖锐垂直梯度的强垂直写入场。 缝合屏蔽的形状由两个设计参数d =½（W> SWSLE-> W> MP MP TE TE TE TE SUB SUB SUB SUB SUB SUB SUB SUB SUB SUB SUB SUB SUB SUB and and and and and and and and） W SHSLE 是ABS平面中缝合屏蔽的前缘的宽度，W> MPTE 是ABS平面中主磁极的后缘的宽度 而T SWS 是缝合屏蔽的厚度。 通过这些参数的适当选择，头部的写入场在交叉轨道方向上被大大限制，从而消除了相邻的轨迹擦除。

    Pole piece for high track density recording
    93.
    发明申请
    Pole piece for high track density recording 失效
    用于高轨道密度记录的极片

    公开(公告)号：US20050180049A1

    公开(公告)日：2005-08-18

    申请号：US10780514

    申请日：2004-02-17

    申请人： Cherng-Chyi Han ,  Mao-Min Chen ,  Lei Zhang ,  Xiaomin Liu

    发明人： Cherng-Chyi Han ,  Mao-Min Chen ,  Lei Zhang ,  Xiaomin Liu

    IPC分类号： G11B5/147 ,  G11B5/31

    CPC分类号： G11B5/3116 ,  Y10T29/49032 ,  Y10T29/49046

    摘要： For high track density recording, tighter reader and writer track width control are essential. This has been achieved by using a plated NiPd write gap which is self-aligned with a plated 23 KG pole material. Heat dissipation by the writer is thus improved since alumina has been replaced with nonmagnetic metal materials, such as Ru, leading to less pole tip protrusion which in turn leads to better writer track width control

    摘要翻译： 对于高轨道密度记录，更紧密的读写器轨道宽度控制是至关重要的。 这已经通过使用与电镀的23KG极材料自对准的镀NiPd写入间隙来实现。 因此，由于氧化铝被诸如Ru之类的非磁性金属材料所代替，导致作者的散热得到改善，导致较少的极尖突起，这又导致更好的写入器轨道宽度控制

    MRAM cell with flat topography and controlled bit line to free layer distance and method of manufacture
    95.
    发明申请
    MRAM cell with flat topography and controlled bit line to free layer distance and method of manufacture 有权

    公开(公告)号：US20050127416A1

    公开(公告)日：2005-06-16

    申请号：US10732013

    申请日：2003-12-10

    申请人： Cherng-Chyi Han ,  Liubo Hong

    发明人： Cherng-Chyi Han ,  Liubo Hong

    IPC分类号： H01F10/32 ,  G11C11/14 ,  H01L21/8246 ,  H01L27/105 ,  H01L27/22 ,  H01L29/82 ,  H01L31/062 ,  H01L43/08 ,  H01L43/12

    CPC分类号： H01L27/222 ,  H01L43/12

    摘要： A method for forming MRAM cell structures wherein the topography of the cell is substantially flat and the distance between a bit line and a magnetic free layer, a word line and a magnetic free layer or a word line and a bit line and a magnetic free layer is precise and well controlled. The method includes the formation of an MTJ film stack over which is formed both a capping and sacrificial layer. The stack is patterned by conventional means, then is covered by a layer of insulation which is thinned by CMP to expose a remaining portion of the sacrificial layer. The remaining portion of the sacrificial layer can be precisely removed by an etching process, leaving only the well dimensioned capping layer to separate the bit line from the magnetic free layer and the capping layer. The bit line and an intervening layer of insulation separate the free layer from a word line in an equally precise and controlled manner.

    Process of manufacturing a magnetic read head
    96.
    发明授权
    Process of manufacturing a magnetic read head 失效
    制造磁读头的过程

    公开(公告)号：US06776883B2

    公开(公告)日：2004-08-17

    申请号：US10100754

    申请日：2002-03-19

    申请人： Kochan Ju ,  You Feng Zheng ,  Mao-Min Chen ,  Cherng-Chyi Han ,  Charles Lin

    发明人： Kochan Ju ,  You Feng Zheng ,  Mao-Min Chen ,  Cherng-Chyi Han ,  Charles Lin

    IPC分类号： B05D512

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/313 ,  G11B5/3163 ,  G11B5/3903 ,  G11B2005/3996

    摘要： A magnetic read head with reduced side reading characteristics is described. This design combines use of a current channeling layer (CCL) with stabilizing longitudinal bias layers whose magnetization direction is canted relative to that of the free layer easy axis and that of the pinned layer (of the GMR). This provides several advantages: First, the canting of the free layer at the side region results in a reduction of side reading by reducing magnetic sensitivity in that region. Second, the CCL leads to a narrow current flow profile at the side region, therefore producing a narrow track width definition. A process for making this device is described. Said process allows some of the requirements for interface cleaning associated with prior art processes to be relaxed.

    摘要翻译： 描述了具有减小的侧读取特性的磁读头。 该设计结合了当前沟道层（CCL）与稳定纵向偏置层的使用，其稳定的纵向偏置层的磁化方向相对于自由层容易轴和固定层（GMR）的方向倾斜。 这提供了几个优点：首先，通过降低该区域的磁敏感度，侧面区域的自由层的倾斜导致侧读数的减少。 第二，CCL导致在侧面区域的窄电流流动分布，因此产生窄的轨道宽度定义。 描述制造该设备的过程。 所述方法允许放松与现有技术方法相关联的界面清洁的一些要求。

    Method to make laminated yoke for high data rate giant magneto-resistive head
    100.
    发明授权
    Method to make laminated yoke for high data rate giant magneto-resistive head 失效
    用于高数据速率巨磁阻头的叠片磁轭的方法

    公开(公告)号：US06345435B1

    公开(公告)日：2002-02-12

    申请号：US09443448

    申请日：1999-11-22

    申请人： Cherng-Chyi Han ,  Chyu-Jiuh Torng ,  Rodney Lee ,  Kochan Ju

    发明人： Cherng-Chyi Han ,  Chyu-Jiuh Torng ,  Rodney Lee ,  Kochan Ju

    IPC分类号： G11B542

    CPC分类号： G11B5/59683 ,  G11B5/4813 ,  G11B5/5521 ,  Y10T29/49044 ,  Y10T29/49046

    摘要： A method and design for the fabrication of a laminated yoke for a high data rate magnetic read-write transducer head. A full film layer of first ferromagnetic material is formed on a base using either plating or sputtering. The base comprises a read head, a ferromagnetic pole piece, and a ferromagnetic shield which also serves as a pole piece. A patterned layer of first non-magnetic dielectric is then formed on the full film layer of first ferromagnetic material. A patterned layer of photoresist is then formed on the full film layer of first ferromagnetic material and the patterned non-magnetic dielectric and used as a frame for a frame plating deposition of a patterned layer of second ferromagnetic material. The full film layer of first ferromagnetic material and the non-magnetic dielectric are then patterned, using the patterned layer of second ferromagnetic material as a mask and ion beam etching.

    摘要翻译： 一种用于制造用于高数据速率磁读写传感器头的层叠磁轭的方法和设计。 使用电镀或溅射在基底上形成第一铁磁材料的完整膜层。 基座包括读头，铁磁极片和铁磁屏蔽，其也用作极片。 然后在第一铁磁材料的全部薄膜层上形成第一非磁性电介质的图案层。 然后在第一铁磁材料和图案化非磁性电介质的完整膜层上形成图案化的光致抗蚀剂层，并用作用于第二铁磁材料的图案化层的框架电镀沉积的框架。 然后使用第二铁磁材料的图案化层作为掩模和离子束蚀刻来对第一铁磁材料和非磁性介电体的全部膜层进行构图。