利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

95 条记录 (耗时 0.022 秒)

    Magnetic write head having a self-aligned side wrap-around shield with multi-angle slanted bump
    1.
    发明授权
    Magnetic write head having a self-aligned side wrap-around shield with multi-angle slanted bump 有权
    具有具有多角度倾斜凸起的自对准侧包绕屏蔽的磁性写头

    公开(公告)号：US08422168B2

    公开(公告)日：2013-04-16

    申请号：US12343709

    申请日：2008-12-24

    申请人： Wen-Chien David Hsiao ,  Aron Pentek ,  Sue Siyang Zhang ,  Yi Zheng

    发明人： Wen-Chien David Hsiao ,  Aron Pentek ,  Sue Siyang Zhang ,  Yi Zheng

    IPC分类号： G11B5/127

    CPC分类号： G11B5/1278 ,  G11B5/112 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163

    摘要： A method for forming a magnetic write head having a trailing shield with a tapered and stepped, self aligned trailing magnetic shield. The shield has a tapered portion that tapers away from the write pole as it extends away from the ABS. This tapered portion helps to channel flux to the pole tip portion of the shield, while preventing the loss of write field to the shield. The stepped portion of the shield further helps to prevent the loss of write field and also defines a secondary throat height of the shield that can be accurately located relative to the air bearing surface.

    摘要翻译： 一种用于形成具有带有锥形和阶梯式自对准拖尾磁屏蔽的后挡板的磁写头的方法。 屏蔽件具有锥形部分，当锥形部分远离ABS延伸时，该锥形部分从写入柱逐渐变细。 该锥形部分有助于将通量传导到屏蔽的极端部分，同时防止对屏蔽件的写入场的损失。 护罩的台阶部分还有助于防止写入场的损失，并且还限定可相对于空气轴承表面精确定位的护罩的次级喉部高度。

    Perpendicular magnetic recording head having a notched trailing shield
    3.
    发明授权
    Perpendicular magnetic recording head having a notched trailing shield 有权
    垂直磁记录头具有带槽口的后挡板

    公开(公告)号：US08111479B2

    公开(公告)日：2012-02-07

    申请号：US11877570

    申请日：2007-10-23

    申请人： Tsung Yuan Chen ,  Wen-Chien David Hsiao ,  Yimin Hsu ,  Vladimir Nikitin ,  Changqing Shi

    发明人： Tsung Yuan Chen ,  Wen-Chien David Hsiao ,  Yimin Hsu ,  Vladimir Nikitin ,  Changqing Shi

    IPC分类号： G11B5/127 ,  G11B5/23

    CPC分类号： G11B5/3116 ,  G11B5/1278

    摘要： A magnetic write head for perpendicular magnetic data recording having a trailing shield with a two step throat height. The trailing shield is formed over a non-magnetic bump that forms a notch in the leading edge of the trailing shield. This notch defines a first, smaller throat height closest to the write pole and a larger throat height away from the write pole. The smaller throat height near the write pole prevents excess magnetic flux from leaking to the write pole, thereby ensuring efficient strong write field. The larger trailing shield throat height away from the write pole prevents magnetic saturation of the trailing shield and also greatly facilitates manufacturing avoiding problems related to variations and deviations in manufacturing processes used to define the trailing shield.

    摘要翻译： 用于垂直磁数据记录的磁写头，具有具有两段喉部高度的后挡板。 后挡板形成在非磁性凸块上，该非磁性凸块在后挡板的前缘形成凹口。 该凹口限定了最靠近写入极的第一较小的喉部高度和远离写入极的较大的喉部高度。 写极附近的较小的喉部高度可防止过多的磁通量泄漏到写入极，从而确保有效的强写入场。 远离写入极的较大的后屏蔽喉部高度防止尾部屏蔽层的磁饱和，并且还极大地促进制造，避免与用于限定后屏蔽的制造工艺的变化和偏差相关的问题。

    Two step corner recess for secondary stray field reduction in a perpendicular magnetic recording head
    5.
    发明授权
    Two step corner recess for secondary stray field reduction in a perpendicular magnetic recording head 有权
    用于垂直磁记录头中二次杂散场减少的两步拐角凹槽

    公开(公告)号：US07881019B2

    公开(公告)日：2011-02-01

    申请号：US11391835

    申请日：2006-03-28

    申请人： Wen-Chien David Hsiao ,  Yimin Hsu ,  Ming Jiang ,  Vladimir Nikitin

    发明人： Wen-Chien David Hsiao ,  Yimin Hsu ,  Ming Jiang ,  Vladimir Nikitin

    IPC分类号： G11B5/33 ,  G11B5/127

    CPC分类号： G11B5/1278 ,  G11B5/3116

    摘要： A magnetic structure for use in a magnetic head for avoiding stray field writing. The magnetic structure can be for example a magnetic shield or could be a magnetic pole of a write head and is particularly advantageous for use in a perpendicular recording system, because such perpendicular recording systems are especially susceptible to stray field writing. The magnetic structure includes a forward protruding portion that extends toward the air bearing surface (ABS) of the head also includes first and second wing portions that extend laterally from the forward protruding portion. The wing portions each have includes an inner constant recess portion, and an outer tapered portion. The inner constant recess portion of each wing prevents stray field writing while also preventing magnetic saturation, the outer tapered portions, which taper away from the ABS as they extend laterally outward, further prevent stray field writing by removing the outer corners of the shield away from the ABS.

    摘要翻译： 用于磁头的磁结构，用于避免杂散场写入。 磁性结构可以是例如磁屏蔽或者可以是写入磁头的磁极，并且对于在垂直记录系统中使用是特别有利的，因为这样的垂直记录系统特别容易受到杂散磁场写入的影响。 磁性结构包括朝向头部的空气支承表面（ABS）延伸的向前突出部分还包括从前突出部分横向延伸的第一和第二翼部分。 翼部各自包括内部恒定凹部和外锥形部。 每个翼的内部恒定凹部防止杂散场写入，同时也防止磁饱和，当锥形横向向外延伸时，远离ABS逐渐变细的外锥形部分进一步防止杂散场写入，通过将屏蔽的外角除去 ABS。

    Perpendicular magnetic recording writer main pole having imbedded non-magnetic core and de-coupled pole tip
    8.
    发明申请
    Perpendicular magnetic recording writer main pole having imbedded non-magnetic core and de-coupled pole tip 有权
    垂直磁记录器主极嵌有非磁芯和脱耦极头

    公开(公告)号：US20090168237A1

    公开(公告)日：2009-07-02

    申请号：US12005786

    申请日：2007-12-27

    申请人： Wen-Chien David Hsiao ,  Ming Jiang ,  Changqing Shi

    发明人： Wen-Chien David Hsiao ,  Ming Jiang ,  Changqing Shi

    IPC分类号： G11B5/127 ,  B44C1/22

    CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163

    摘要： Methods and structures for the fabrication of a thin film, perpendicular recording write head are disclosed. The structure provides a pole tip separated from a rear pole by a non-magnetic separation layer located adjacent the flare point. The rear pole contains an imbedded non-magnetic layer. The separated pole tip and imbedded layer aid in the high data rate recording as well as the erasure performance of the write pole structure. The fabrication involves the deposition of two different oxide layers which have mutually high etch selectivities. This characteristic allows a write pole structure to be built wherein the track width is independent of the location of the flare point. The process also produces a structure wherein the placement of the throat height of the shield is self aligned to the flare point of the write pole.

    摘要翻译： 公开了用于制造薄膜垂直记录写头的方法和结构。 该结构提供了通过位于火炬点附近的非磁性分离层与后极分离的极尖。 后极包含嵌入的非磁性层。 分离的极尖和嵌入层有助于高数据速率记录以及写柱结构的擦除性能。 该制造涉及沉积具有相互高蚀刻选择性的两个不同的氧化物层。 该特征允许构建写极结构，其中轨道宽度独立于耀斑点的位置。 该过程还产生一种结构，其中屏蔽件的喉部高度的放置与写入极的扩张点自对准。

    Trailing shield design for reducing wide area track erasure (water) in a perpendicular recording system
    10.
    发明授权
    Trailing shield design for reducing wide area track erasure (water) in a perpendicular recording system 失效
    拖尾盾设计，用于减少垂直记录系统中的广域轨迹擦除（水）

    公开(公告)号：US07538976B2

    公开(公告)日：2009-05-26

    申请号：US11412017

    申请日：2006-04-25

    申请人： Wen-Chien David Hsiao ,  Yimin Hsu ,  Vladimir Nikitin

    发明人： Wen-Chien David Hsiao ,  Yimin Hsu ,  Vladimir Nikitin

    IPC分类号： G11B5/127

    CPC分类号： G11B5/3146 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/3116

    摘要： A magnetic structure for use in a magnetic head for avoiding wide angle track erasure and other forms of adjacent track interference. The magnetic structure includes a trailing shield having a specially configured back edge opposite the air bearing surface ABS. The magnetic shield has a shallow substantially constant throat height at a center portion. Then, the back edge of the shield tapers back away from the ABS in first and second intermediate portion located at either side of the center portion. These intermediate portions lead to first and second outer portions that have substantially constant throat heights that are larger than the throat height at the center region. The throat height at each of the laterally outer portions can be 1.5 to 5 times the throat height of the center portion. This configuration, chokes off stray fields that might be picked up by the outer portions of the shield preventing excessive magnetic flux from reaching the central portion of the shield where it might affect writing. In addition, the limited throat height of the outer portion (ie. the back edge of the outer portions does not keep tapering back away from the ABS) prevents the outer portions from picking up too much stray magnetic field, while also ensuring that sufficient magnetic material will be present to absorb desired magnetic field from the write pole during use.

    摘要翻译： 用于磁头的磁结构，用于避免广角跟踪擦除和其他形式的相邻轨道干扰。 磁性结构包括后挡板，其具有与空气轴承表面ABS相对的特殊配置的后边缘。 磁屏蔽件在中心部分具有浅实质上恒定的喉部高度。 然后，屏蔽件的后边缘在位于中心部分两侧的第一和第二中间部分中从ABS逐渐变细。 这些中间部分导致第一和第二外部部分具有大于喉部高度在中心区域处大致恒定的喉部高度。 每个横向外部部分的喉部高度可以是中心部分的喉部高度的1.5至5倍。 这种构造可以消除可能由屏蔽外部拾取的杂散场，防止过多的磁通量到达屏蔽的中心部分，从而可能影响写入。 此外，外部部分的限制喉部高度（即，外部部分的后边缘不保持从ABS退回）防止外部部分拾取太多的杂散磁场，同时还确保足够的磁 将存在材料以在使用期间从写入极吸收期望的磁场。