专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20050024764A1 Magnetic head having a write coil structure with a reduced electrical resistance for reducing thermal protrusion 失效
标题翻译：磁头具有具有降低的电阻降低热突起的写入线圈结构
公开(公告)号：US20050024764A1
公开(公告)日：2005-02-03
申请号：US10629060
申请日：2003-07-29
申请人： Wen-Chien Hsiao , Edward Lee , Vladimir Nikitin , Samuel Yuan
发明人： Wen-Chien Hsiao , Edward Lee , Vladimir Nikitin , Samuel Yuan
IPC分类号： G11B5/17 , G11B5/012 , G11B5/31 , G11B5/40
CPC分类号： G11B5/3136 , G11B5/012 , G11B5/17 , G11B5/3116 , G11B5/313 , G11B5/40
摘要： Magnetic heads having write coil structures with reduced electrical resistances for reducing thermal protrusion are disclosed. In one illustrative example, a magnetic head includes a magnetic yoke; a write gap layer formed between upper and lower poles of the magnetic yoke; and a write coil having a plurality of coil layers. Each coil layer of the write coil extends continuously between the upper and the lower poles through a plane defined by the write gap layer. Preferably, the write coil is formed using a damascene process, such that each coil layer is wider than each coil separating layer. Such a structure provides for a relatively large amount of coil materials to be used, which reduces the coil's electrical resistance. This, in turn, reduces the heat generated by the write coils during operation. Further, either one or both of the lower and upper poles may include a horizontally laminated structure of alternating magnetic and non-magnetic dielectric layers to further reduce heating caused by eddy current losses. Since thermal protrusion is reduced, the fly height of magnetic head may be made relatively small with a reduced risk of head-to-disk crashes and disk scratches.
摘要翻译：公开了具有降低的电阻以减少热突起的具有写入线圈结构的磁头。在一个说明性示例中，磁头包括磁轭; 形成在磁轭的上下极之间的写间隙层; 以及具有多个线圈层的写入线圈。写入线圈的每个线圈层通过由写入间隙层限定的平面在上极和下极之间连续延伸。优选地，写入线圈使用镶嵌工艺形成，使得每个线圈层比每个线圈分离层宽。这种结构提供了相对大量的待使用的线圈材料，这降低了线圈的电阻。这又减少了在操作期间由写入线圈产生的热量。此外，下极和上极中的一个或两个可以包括交替的磁和非磁性介电层的水平层叠结构，以进一步减少由涡流损耗引起的加热。由于热突起减少，所以磁头的飞行高度可以相对较小，同时降低了磁头与磁盘的碰撞和磁盘划痕的风险。

2. 发明申请

US20070247750A1 Magnetic write head design for reducing temperature induced protrusion 有权
标题翻译：磁写头设计用于降低温度引起的突起
公开(公告)号：US20070247750A1
公开(公告)日：2007-10-25
申请号：US11411590
申请日：2006-04-25
申请人： Wen-Chien Hsiao , Yimin Hsu , Edward Lee , Vladimir Nikitin , Katalin Pentek
发明人： Wen-Chien Hsiao , Yimin Hsu , Edward Lee , Vladimir Nikitin , Katalin Pentek
IPC分类号： G11B5/147
CPC分类号： G11B5/1278 , G11B5/3133 , G11B5/3136
摘要： A magnetic write pole having a structure that prevents thermally induced pole tip protrusion. The write head has a return pole with a magnetic pedestal formed at the air bearing surface (ABS) and a back gap at an end opposite the ABS. An electrically conductive write coil having a plurality of turns passes over the return pole. A fill layer of a material having a low coefficient of thermal expansion, such as alumina is disposed between the coil and the pedestal, and may extend over the top of the coil to the back gap. A photoresist coil insulation layer may be provided between the turns of the coil to insulate the turns of the coil from one another. The photoresist coil insulation layer can also extend to the back gap. A write pole, formed above the return pole and coil is magnetically connected with the back gap layer and return pole by a magnetic shaping layer.
摘要翻译：具有防止热感应极尖突出的结构的磁性写入极。写头具有在空气轴承表面（ABS）形成的磁性基座的返回极和与ABS相对的一端的后部间隙。具有多个匝的导电写入线圈通过返回极。具有低热膨胀系数的材料的填充层（例如氧化铝）设置在线圈和基座之间，并且可以在线圈的顶部延伸到后部间隙。可以在线圈的匝之间设置光致抗蚀剂线圈绝缘层，以将线圈的匝彼此绝缘。光致抗蚀剂线圈绝缘层也可以延伸到后隙。在返回极和线圈之上形成的写极通过磁性成形层与后间隙层和返回极磁连接。

3. 发明申请

US20050237666A1 Magnetic write head with recessed overcoat 失效
标题翻译：磁性写头与凹进的大衣
公开(公告)号：US20050237666A1
公开(公告)日：2005-10-27
申请号：US10831834
申请日：2004-04-26
申请人： Wen-Chien Hsiao , Wipul Jayasekara , Edward Lee , Vladimir Nikitin , Patrick Webb , Sue Zhang
发明人： Wen-Chien Hsiao , Wipul Jayasekara , Edward Lee , Vladimir Nikitin , Patrick Webb , Sue Zhang
IPC分类号： G11B5/127 , G11B5/147 , G11B5/31
CPC分类号： G11B5/1278 , G11B5/3143
摘要： A magnetoresistive read/write head having a first layer of alumina and a second layer of silicon dioxide overlaying a P3 layer of the head. In a preferred embodiment, the silicon dioxide layer is recessed away from an Air Bearing Surface (ABS) to reduce protrusion of a P2 layer and the P3 layer in the head, and to reduce degradation in the magnetic properties of the pole tips of the P2 and P3 layer ends.
摘要翻译：具有第一氧化铝层和覆盖头部的P 3层的第二二氧化硅层的磁阻读写头。在优选实施例中，二氧化硅层从空气轴承表面（ABS）凹入，以减少头部中的P 2层和P 3层的突出，并且降低磁头的磁性能的降低 P 2和P 3层结束。

4. 发明授权

US07877859B2 Shield fabrication of magnetic write heads 有权
标题翻译：磁写头的屏蔽制造
公开(公告)号：US07877859B2
公开(公告)日：2011-02-01
申请号：US11767330
申请日：2007-06-22
申请人： Wen-Chien Hsiao , Yimin Hsu , Vladimir Nikitin
发明人： Wen-Chien Hsiao , Yimin Hsu , Vladimir Nikitin
IPC分类号： G11B5/127 , H04R31/00
CPC分类号： G11B5/11 , G11B33/1493 , Y10T29/49021 , Y10T29/49028 , Y10T29/49032 , Y10T29/49043 , Y10T29/49155 , Y10T29/49165
摘要： Methods are provided for fabricating a write head with a self aligned wrap around shield and a self aligned flared region of a write pole. A flare point and a track width of a write pole may be fabricated using multiple processes. The multiple processes utilize several masking structures to define the track width and the flare point of the write pole. A mask structure is formed to cover a first portion of the write pole. An edge of the mask structure adjacent to an exposed second portion of the write pole defines a flare point of the write pole. Various structures of the write head, including shield gap layers, a wrap around shield and a flared region (e.g., the yoke) of the write pole may be fabricated from the flare point defined by the mask structure.
摘要翻译：提供了用于制造具有围绕屏蔽件的自对准包裹和写入极的自对准扩口区域的写入头的方法。可以使用多个工艺来制造写极点的闪点和轨道宽度。多个过程利用几个掩模结构来定义磁道宽度和写入磁极的扩展点。形成掩模结构以覆盖写入极的第一部分。掩模结构的与写入极的暴露的第二部分相邻的边缘限定了写入极的扩张点。写磁头的各种结构，包括屏蔽间隙层，环绕屏蔽层和写磁极的扩口区域（例如磁轭）可以由掩模结构限定的扩口来制造。

5. 发明申请

US20070236831A1 Shaped trailing shield of a perpendicular recording write element 有权
标题翻译：垂直记录写元件的形状的后盾
公开(公告)号：US20070236831A1
公开(公告)日：2007-10-11
申请号：US11399548
申请日：2006-04-06
申请人： Xiaodong Che , Wen-Chien Hsiao , Yimin Hsu , Vladimir Nikitin
发明人： Xiaodong Che , Wen-Chien Hsiao , Yimin Hsu , Vladimir Nikitin
IPC分类号： G11B5/147
CPC分类号： G11B5/1278 , G11B5/11 , G11B5/3116 , G11B5/3146
摘要： Write elements are discussed having a write pole and an associated trailing shield. A leading side of the trailing shield faces a trailing side of the write pole. The leading side of the trailing shield has a shape such that a center portion of the leading side has less of a separation from the trailing side of the write pole than track edge portions of the leading side of the trailing shield. An exemplary shape the leading side of the trailing shield may be a convex shape when viewed from the ABS. The shape of the leading side of the trailing shield causes the trailing shield to shunt less of the magnetic field from the trailing side of the write pole at the track edges so that the written transition at the track edge will not lag behind the written transition at the track center allowing for a straighter transition.
摘要翻译：讨论了具有写极点和相关联的后屏蔽的写元件。后挡板的前端面向写极的后侧。后挡板的前侧具有这样的形状，使得前侧的中心部分比后挡板的前侧的轨道边缘部分具有比写入极的后侧更小的间隔。当从ABS观察时，后护罩的前侧的示例性形状可以是凸形。尾部屏蔽的前端的形状使得后屏蔽件在轨道边缘处从写入极的后侧分流较少的磁场，使得在轨道边缘处的写入的转变不会滞后于在轨道中心允许更直接的过渡。

6. 发明申请

US20070263324A1 PERPENDICULAR MAGNETIC RECORDING WRITE HEAD WITH NOTCHED TRAILING SHIELD AND METHOD FOR MAKING 失效
标题翻译：具有记录轨迹的平面磁记录头和制造方法
公开(公告)号：US20070263324A1
公开(公告)日：2007-11-15
申请号：US11379969
申请日：2006-04-24
申请人： Donald Allen , Amanda Baer , Michael Feldbaum , Wen-Chien Hsiao , Vladimir Nikitin , Aron Pentek , Katalin Pentek
发明人： Donald Allen , Amanda Baer , Michael Feldbaum , Wen-Chien Hsiao , Vladimir Nikitin , Aron Pentek , Katalin Pentek
IPC分类号： G11B5/48
CPC分类号： G11B5/1278 , G11B5/11 , G11B5/3116 , G11B5/3146 , G11B5/3163 , Y10T29/49039 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： The invention is a perpendicular magnetic recording write head with a write pole, a trapezoidal-shaped trailing shield notch, and a metal gap layer between the write pole and notch. The write pole has a trailing edge that has a width substantially defining the track width and that faces the front edge of the notch but is spaced from it by the gap layer. The write head is fabricated by a process than includes reactive ion beam etching of a thin mask film above the write pole to remove the mask film and widen the opening at the edges of the write pole. The gap layer and notch are deposited into the widened opening above the write pole. The write pole has nonmagnetic filler material, such as alumina, surrounding it except at its trailing edge, where it is in contact with the gap layer, which is formed of a different material than the surrounding filler material.
摘要翻译：本发明是一种具有写极，梯形后屏蔽切口和写极与刻槽之间的金属间隙层的垂直磁记录写头。写入极具有后缘，其具有基本上限定轨道宽度的宽度并且面向凹口的前边缘，但是通过间隙层与其间隔开。写头通过一种工艺制造，而不是包括对写极上方的薄掩模膜的反应离子束蚀刻，以去除掩模膜并加宽写入极的边缘处的开口。间隙层和凹口沉积在写柱上方的加宽开口中。写极具有非磁性填充材料，例如氧化铝，除了其后缘外围，其与间隙层接触，间隙层由与周围填料材料不同的材料形成。

7. 发明申请

US20050264930A1 Method and apparatus for providing a write head with an improved pole tip to improve overwrite and/or adjacent track interference 失效
标题翻译：用于向写头提供改进的极尖以改善重写和/或相邻轨道干扰的方法和装置
公开(公告)号：US20050264930A1
公开(公告)日：2005-12-01
申请号：US10857363
申请日：2004-05-28
申请人： Savas Gider , Wen-Chien Hsiao , Quan-chiu Lam , Terence Lam , Edward Hin Lee , Yansheng Luo , Vladimir Nikitin , Changqing Shi , Xiaoyu Sui
发明人： Savas Gider , Wen-Chien Hsiao , Quan-chiu Lam , Terence Lam , Edward Hin Lee , Yansheng Luo , Vladimir Nikitin , Changqing Shi , Xiaoyu Sui
IPC分类号： G11B5/23 , G11B5/31
CPC分类号： G11B5/3116
摘要： A method and apparatus for providing a write head with an improved pole tip to improve overwrite and/or adjacent track interference. A cross pole tip writer is provided with a shape that is designed to reduce the saturation on the pole tip and aid in the concentration of flux to the down track.
摘要翻译：一种用于向写头提供改进的极尖以改善覆盖和/或相邻轨道干扰的方法和装置。十字极尖端写入器具有被设计成减小极尖上的饱和度的形状，并且有助于向下轨道的通量的集中。

8. 发明申请

US20080313885A1 SHIELD FABRICATION OF MAGNETIC WRITE HEADS 有权
标题翻译：磁性写头的屏蔽制作
公开(公告)号：US20080313885A1
公开(公告)日：2008-12-25
申请号：US11767330
申请日：2007-06-22
申请人： Wen-Chien Hsiao , Yimin Hsu , Vladimir Nikitin
发明人： Wen-Chien Hsiao , Yimin Hsu , Vladimir Nikitin
IPC分类号： G11B5/10 , G11B5/33
CPC分类号： G11B5/11 , G11B33/1493 , Y10T29/49021 , Y10T29/49028 , Y10T29/49032 , Y10T29/49043 , Y10T29/49155 , Y10T29/49165
摘要： Methods are provided for fabricating a write head with a self aligned wrap around shield and a self aligned flared region of a write pole. A flare point and a track width of a write pole may be fabricated using multiple processes. The multiple processes utilize several masking structures to define the track width and the flare point of the write pole. A mask structure is formed to cover a first portion of the write pole. An edge of the mask structure adjacent to an exposed second portion of the write pole defines a flare point of the write pole. Various structures of the write head, including shield gap layers, a wrap around shield and a flared region (e.g., the yoke) of the write pole may be fabricated from the flare point defined by the mask structure.
摘要翻译：提供了用于制造具有围绕屏蔽件的自对准包裹和写入极的自对准扩口区域的写入头的方法。可以使用多个工艺来制造写极点的闪点和轨道宽度。多个过程利用几个掩模结构来定义磁道宽度和写入磁极的扩展点。形成掩模结构以覆盖写入极的第一部分。掩模结构的与写入极的暴露的第二部分相邻的边缘限定了写入极的扩张点。写磁头的各种结构，包括屏蔽间隙层，环绕屏蔽层和写磁极的扩口区域（例如磁轭）可以由掩模结构限定的扩口来制造。

9. 发明申请

US20070258167A1 Perpendicular magnetic write head having a magnetic write pole with a concave trailing edge 有权
标题翻译：具有磁写入磁极的垂直磁性写头具有凹形后缘
公开(公告)号：US20070258167A1
公开(公告)日：2007-11-08
申请号：US11411556
申请日：2006-04-25
申请人： Donald Allen , Amanda Baer , Michael Feldbaum , Hung-Chin Guthrie , Wen-Chien Hsiao , Yimin Hsu , Ming Jiang , Yinshi Liu , Aron Neuhaus , Vladimir Nikitin , Aron Pentek , Katalin Pentek , Yi Zheng
发明人： Donald Allen , Amanda Baer , Michael Feldbaum , Hung-Chin Guthrie , Wen-Chien Hsiao , Yimin Hsu , Ming Jiang , Yinshi Liu , Aron Neuhaus , Vladimir Nikitin , Aron Pentek , Katalin Pentek , Yi Zheng
IPC分类号： G11B5/147
CPC分类号： G11B5/3116 , G11B5/11 , G11B5/1278 , G11B5/1871 , G11B5/3146 , G11B5/315 , G11B5/3163
摘要： A magnetic write head for perpendicular magnetic recording having a write pole with a concave trailing edge. The magnetic write pole can have a trapezoidal shape with first and second laterally opposed sides that are further apart at the trailing edge than at the leading edge. The write head may or may not include a magnetic trailing shield, and if a trailing shield is included it is separated from the trailing edge by a non-magnetic write gap layer. The concave trailing edge improves magnetic performance such as by improving the transition curvature. A method for constructing the write head includes forming a magnetic write pole by forming a mask structure over a deposited write pole material, the mask structure having an alumina hard mask and an image transfer layer such as DURAMIDE®. An alumina fill layer is then deposited and a chemical mechanical polish is performed to open up the image transfer layer. A reactive on etch is performed to remove the image transfer layer and a reactive ion mill or reactive ion etch is performed to remove the alumina hard mask and form a concave surface on the write pole.
摘要翻译：用于垂直磁记录的磁写头，具有带有凹后缘的写极。磁性写入极可以具有梯形形状，其中第一和第二横向相对侧在后缘处比在前缘处更远地分开。写头可以包括或可以不包括磁性后屏蔽，并且如果包括后屏蔽，则其通过非磁性写间隙层与后缘分离。凹形后边缘提高磁性能，例如通过改善转变曲率。构成写入头的方法包括通过在沉积的写入极材料上形成掩模结构来形成磁性写入极，掩模结构具有氧化铝硬掩模和诸如DURAMIDE的图像转移层。然后沉积氧化铝填充层，并执行化学机械抛光以打开图像转印层。执行反应性蚀刻以去除图像转印层，并且执行反应性离子磨或反应离子蚀刻以除去氧化铝硬掩模并在写入极上形成凹面。

10. 发明申请

US20070230045A1 Two step corner recess for secondary stray field reduction in a perpendicular magnetic recording head 有权
标题翻译：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：US20070230045A1
公开(公告)日：2007-10-04
申请号：US11391835
申请日：2006-03-28
申请人： Wen-Chien Hsiao , Yimin Hsu , Ming Jiang , Vladimir Nikitin
发明人： Wen-Chien Hsiao , Yimin Hsu , Ming Jiang , Vladimir Nikitin
IPC分类号： G11B5/147
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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式