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. 发明授权

US5684658A High track density dual stripe magnetoresistive (DSMR) head 失效
标题翻译：高轨道密度双条磁阻（DSMR）头
公开(公告)号：US5684658A
公开(公告)日：1997-11-04
申请号：US727264
申请日：1996-10-07
申请人： Xizeng Shi , Yimin Guo , Kochan Ju , Cherng-Chyi Han , Yimin Hsu , Jei-Wei Chang
发明人： Xizeng Shi , Yimin Guo , Kochan Ju , Cherng-Chyi Han , Yimin Hsu , Jei-Wei Chang
IPC分类号： G11B5/012 , G11B5/39 , G11B5/48
CPC分类号： G11B5/3954 , G11B5/012 , G11B5/3967 , G11B5/488
摘要： A method for forming a dual stripe magnetoresistive (DSMR) sensor element, and the dual stripe magnetoresistive (DSMR) sensor element formed through the method. To practice the method, there is formed upon a substrate a first magnetoresistive (MR) layer, where the first magnetoresistive (MR) layer has a first sensor region longitudinally magnetically biased in a first longitudinal bias direction through a patterned first longitudinal magnetic biasing layer. There is then formed a second magnetoresistive (MR) layer parallel with and separated from the first magnetoresistive (MR) layer by an insulator layer. The second magnetoresistive (MR) layer has a second sensor region longitudinally magnetically biased in a second longitudinal bias direction through a patterned second longitudinal magnetic biasing layer. The first longitudinal bias direction and the second longitudinal bias direction are substantially parallel. In addition, the first sensor region and the second sensor region are physically offset. Finally, the first magnetoresistive (MR) layer is electromagnetically biased with a first bias current in a first bias current direction and the second magnetoresistive (MR) layer is electromagnetically biased with a second bias current in a second bias current direction, where the first bias current direction and the second bias current direction are substantially parallel.
摘要翻译：一种用于形成双条磁阻（DSMR）传感器元件的方法和通过该方法形成的双条带磁阻（DSMR）传感器元件。为了实施该方法，在衬底上形成第一磁阻（MR）层，其中第一磁阻（MR）层具有通过图案化的第一纵向磁偏置层在第一纵向偏置方向上纵向磁偏置的第一传感器区。然后通过绝缘体层形成与第一磁阻（MR）层平行并与第一磁阻（MR）层分离的第二磁阻（MR）层。第二磁阻（MR）层具有通过图案化的第二纵向磁偏置层在第二纵向偏置方向上纵向磁偏置的第二传感器区。第一纵向偏置方向和第二纵向偏置方向基本平行。此外，第一传感器区域和第二传感器区域被物理偏移。最后，第一磁阻（MR）层在第一偏置电流方向上以第一偏置电流进行电磁偏置，第二磁阻（MR）层在第二偏置电流方向上以第二偏置电流进行电磁偏置，其中第一偏置电流方向和第二偏置电流方向基本上平行。

2. 发明授权

US5703485A Method and test structure for determining magnetic domain switching field when fabricating patterned exchange biased magnetoresistive (MR) head 失效
公开(公告)号：US5703485A
公开(公告)日：1997-12-30
申请号：US687903
申请日：1996-07-29
申请人： Yimin Guo , Kochan Ju , Yimin Hsu
发明人： Yimin Guo , Kochan Ju , Yimin Hsu
IPC分类号： G01R33/09 , G11B5/31 , G11B5/39 , G01R33/02 , H01L43/00 , H01F10/02
CPC分类号： B82Y25/00 , G01R33/093 , G11B5/3932 , G11B5/3166
摘要： A method for determining through a test structure a longitudinal magnetic exchange field within a patterned exchange biased magnetoresistive (MR) sensor element. To practice the method, there is first provided a substrate. Formed upon the substrate is a patterned magnetoresistive (MR) layer which has a projected length upon the substrate and a projected width upon the substrate. There is formed at a pair of separated locations over the patterned magnetoresistive (MR) layer a pair of patterned conductor lead layers. The pair of patterned conductor lead layers is separated by a track width of the patterned magnetoresistive (MR) layer, where the track width is smaller than the projected width. There is also formed within the track width and upon the patterned magnetoresistive (MR) layer a minimum of one patterned anti-ferromagnetic layer separated from each patterned conductor lead layer within the pair of patterned conductor lead layers by a minimum of one unpinned width of the patterned magnetoresistive (MR) layer. The patterned magnetoresistive (MR) layer also has a minimum of one pinned width of the patterned magnetoresistive (MR) layer beneath the minimum of one patterned anti-ferromagnetic layer. The projected length, the unpinned width and the pinned width of the patterned magnetoresistive (MR) layer are chosen such that the magnetic domains within the unpinned width and the pinned width are coupled such that they switch jointly in an externally applied magnetic field. Finally, there is measured through the patterned conductor lead layers a resistance change within the patterned magnetoresistive (MR) layer when the patterned magnetoresistive (MR) layer is exposed to the externally applied magnetic field. The invention also contemplates the test structure through which the method of the invention is practiced.

3. 发明授权

US08503131B2 Perpendicular magnetic write head having a novel shield structure 有权
标题翻译：具有新型屏蔽结构的垂直磁头写头
公开(公告)号：US08503131B2
公开(公告)日：2013-08-06
申请号：US13339310
申请日：2011-12-28
申请人： Yi Zheng , Yimin Hsu , Wen-Chien David Hsiao , Ming Jiang , Aron Pentek , Sue Siyang Zhang , Edward Hin Pong Lee , Hung-chin Guthrie , Ning Shi , Vladimir Nikitin , Prabodh Ratnaparkhi , Yinshi Liu
发明人： Yi Zheng , Yimin Hsu , Wen-Chien David Hsiao , Ming Jiang , Aron Pentek , Sue Siyang Zhang , Edward Hin Pong Lee , Hung-chin Guthrie , Ning Shi , Vladimir Nikitin , Prabodh Ratnaparkhi , Yinshi Liu
IPC分类号： G11B5/147
CPC分类号： G11B5/3166 , G11B5/112 , G11B5/1278 , G11B5/3116 , G11B5/3146 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052 , Y10T428/11 , Y10T428/1186
摘要： A magnetic write head for perpendicular magnetic data recording. The write head includes a substrate and a magnetic write pole formed on the substrate, the write pole having a trailing edge and first and second sides. A magnetic stitched pole is formed over a portion of the magnetic write pole, the stitched pole having a front edge that defines a secondary flare point. First and second non-magnetic side walls are formed at the first and second sides of the write pole. The non-magnetic side walls extend from the substrate at least to the trailing edge of the write pole in a first region near an air bearing surface and wherein the first and second non-magnetic side walls extend from the substrate to a point between the substrate and the trailing edge, allowing the stitched magnetic pole to extend partially over the sides of the write pole.
摘要翻译：用于垂直磁数据记录的磁写头。写入头包括形成在衬底上的衬底和磁性写入磁极，写入极具有后缘和第一和第二侧。在磁性写入磁极的一部分上形成有磁性的缝合磁极，缝合的磁极具有限定二次闪光点的前部边缘。第一和第二非磁性侧壁形成在写入极的第一和第二侧。所述非磁性侧壁在靠近空气支承表面的第一区域中从所述基板至少延伸到所述写柱的后缘，并且其中所述第一和第二非磁性侧壁从所述基板延伸到所述基板之间的点和后缘，允许缝合的磁极部分地延伸在写柱的侧面上。

4. 发明授权

US07848054B2 Perpendicular magnetic write head having a corner notched conformal, wrap-around, trailing magnetic shield for reduced adjacent track interference 有权
标题翻译：垂直磁性写头，具有角切口的保形，环绕，后退磁屏蔽，减少相邻的轨道干扰
公开(公告)号：US07848054B2
公开(公告)日：2010-12-07
申请号：US11744054
申请日：2007-05-03
申请人： Wen-Chien David Hsiao , Yimin Hsu , Vladimir Nikitin , Aron Pentek , Yi Zheng
发明人： Wen-Chien David Hsiao , Yimin Hsu , Vladimir Nikitin , Aron Pentek , Yi Zheng
IPC分类号： G11B5/127
CPC分类号： G11B5/112 , G11B5/1278 , G11B5/3116 , G11B5/3146 , G11B5/315 , G11B5/3163
摘要： A perpendicular magnetic write head having a conformal wrap around trailing shield. The write head includes a write pole that can be configured with a trapezoidal shape as viewed from the Air Bearing Surface (ABS) and which includes a wrap around trailing magnetic shield. The magnetic shield has a trailing portion that is separated from the leading edge of the write pole by a non-magnetic trailing gap, and has side shield portions that are separated from first and second side portions of the write pole by first and second non-magnetic side gaps. The magnetic shield can be configured with notches at either side of the trailing portion of magnetic shield. These notches can extend in the trailing direction by a distance that is preferably ¼ to 1 times the trailing gap thickness. The width of the straight, trailing portion of the shield is preferable ½ to 1 times of the main pole width.
摘要翻译：垂直磁性写头，其具有围绕后屏蔽的保形包裹。写入头包括写入极，其可以被配置为从空气轴承表面（ABS）观察到的梯形形状，并且包括围绕尾部磁屏蔽的包裹。磁屏蔽具有通过非磁性拖尾间隔与写入极的前端分离的后部，并且具有通过第一和第二非间隙与写入极的第一和第二侧部分离的侧面屏蔽部分，磁侧隙。磁屏蔽可以在磁屏蔽的尾部的任一侧配置有凹口。这些凹口可以在拖尾方向上延伸一段距离，优选为后缘间隙厚度的1/4至1倍。屏蔽的直的后部的宽度优选为主极宽度的1/2至1倍。

5. 发明授权

US07841068B2 Methods of fabricating single-pole recording head having trapezoidal main pole and bevel angle promotion layer 有权
标题翻译：制造具有梯形主极和斜角促进层的单极记录头的方法
公开(公告)号：US07841068B2
公开(公告)日：2010-11-30
申请号：US11772665
申请日：2007-07-02
申请人： Tsung Yuan Chen , Yimin Hsu , Yinshi Liu
发明人： Tsung Yuan Chen , Yimin Hsu , Yinshi Liu
IPC分类号： G11B5/127 , H04R31/00
CPC分类号： G11B5/1871 , G11B5/1278 , G11B5/3116 , G11B5/3163 , Y10T29/49032 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： A method of fabricating a single-pole perpendicular magnetic recording head to contain a bevel angle promotion layer that facilitates the fabrication of the bevel angle in a trapezoidal main pole. The bevel angle promotion layer is made of a non-magnetic material that is softer than the material (e.g., Al2O3) that normally underlies the main pole. In one embodiment, the bevel angle promotion layer is formed between an end of the yoke and the air bearing surface (ABS), with the top surface of the bevel angle promotion layer being substantially coplanar with the top surface of the yoke. In other embodiment the bevel angle promotion layer is integrated with a leading edge taper material, which is formed of a magnetic material, to broaden the magnetic flux path between the yoke and the main pole.
摘要翻译：一种制造单极垂直磁记录头的方法，其包含有助于在梯形主极中制造斜角的斜角促进层。斜角促进层由比通常位于主极下方的材料（例如Al 2 O 3）更软的非磁性材料制成。在一个实施例中，斜角促进层形成在轭的端部和空气支承表面（ABS）之间，斜角促进层的顶表面与轭的顶表面基本共面。在其他实施例中，斜角促进层与由磁性材料形成的前缘锥形材料整合，以扩大轭和主极之间的磁通路径。

6. 发明授权

US07804662B2 Perpendicular magnetic recording head including wrap around shield with notched top write gap and method of fabricating the same 有权
标题翻译：垂直磁记录头包括带有凹口顶部写入间隙的屏蔽罩及其制造方法
公开(公告)号：US07804662B2
公开(公告)日：2010-09-28
申请号：US11645390
申请日：2006-12-26
申请人： Tsung Yuan Chen , Hung-Chin Guthrie , Yimin Hsu , Ming Jiang
发明人： Tsung Yuan Chen , Hung-Chin Guthrie , Yimin Hsu , Ming Jiang
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/315 , G11B5/3163
摘要： In a perpendicular recording head, a notch is formed in the top write gap at a location on top of the main pole. A perpendicular head with this notched top write gap structure has less transition curvature and better writability while reducing the adjacent track interference (ATI). Also, the process used to fabricate the head ensures that the trailing edge (writing edge) of the main pole is extremely flat with no corner rounding.
摘要翻译：在垂直记录头中，在主极顶部的位置处，在顶部写入间隙中形成凹口。具有该切口顶部写入间隙结构的垂直头部具有较小的转变曲率和较好的可编写性，同时减小了相邻的轨道干涉（ATI）。此外，用于制造头的过程确保主极的后缘（书写边缘）非常平坦，没有圆角。

7. 发明申请

US20100214693A1 PERPENDICULAR MAGNETIC RECORDING SYSTEM WITH MAGNETIC PRECESSION FOR FAST SWITCHING OF PERPENDICULAR WRITE POLE MAGNETIZATION 有权
标题翻译：具有磁性预测功能的全频磁记录系统，用于快速切换全频写波长磁化
公开(公告)号：US20100214693A1
公开(公告)日：2010-08-26
申请号：US12391242
申请日：2009-02-23
申请人： John Thomas Contreras , Yimin Hsu , Manfred Ernst Schabes , Xinzhi Xing
发明人： John Thomas Contreras , Yimin Hsu , Manfred Ernst Schabes , Xinzhi Xing
IPC分类号： G11B5/127
CPC分类号： G11B5/3123 , G11B5/02 , G11B5/1278 , G11B2005/0005
摘要： A perpendicular magnetic recording system has a write head with a main perpendicular write pole connected to a yoke with first and second electrical coils. The first coil is wrapped around the yoke on one side of the main pole, and the second coil is wrapped around the yoke on the other side of the main pole. The first end of each coil is connected to a respective terminal. The second ends of the two coils are connected together and connected to a common terminal. A lead-time circuit is connected between the common terminal and the first end of one of the coils. Immediately after the direction of write current is switched by the write driver, the lead-time circuit causes the current in one of the coils to lead the current in the other coil. The current displacement between the two coils creates a precession of the magnetic flux reversal, thereby reducing the switching time of the write head.
摘要翻译：垂直磁记录系统具有写头，其具有与第一和第二电线圈的轭连接的主垂直写极。第一线圈缠绕在主极的一侧上的轭架上，并且第二线圈缠绕在主极的另一侧上的轭。每个线圈的第一端连接到相应的端子。两个线圈的第二端连接在一起并连接到公共端子。在公共端子和一个线圈的第一端之间连接有引线时间电路。在写入驱动器切换写入电流的方向之后，引线时间电路使一个线圈中的电流导致另一个线圈中的电流。两个线圈之间的电流位移产生了磁通反转的进动，从而减小了写入头的切换时间。

8. 发明授权

US07593183B2 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：US07593183B2
公开(公告)日：2009-09-22
申请号：US11411590
申请日：2006-04-25
申请人： Wen-Chien David Hsiao , Yimin Hsu , Edward Hin Pong Lee , Vladimir Nikitin , Katalin Pentek
发明人： Wen-Chien David Hsiao , Yimin Hsu , Edward Hin Pong Lee , Vladimir Nikitin , Katalin Pentek
IPC分类号： G11B5/17 , 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。

9. 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。

10. 发明申请

US20080113514A1 Methods for the manufacture of notched trailing shields 失效
标题翻译：开槽后挡板的制造方法
公开(公告)号：US20080113514A1
公开(公告)日：2008-05-15
申请号：US11595654
申请日：2006-11-10
申请人： Amanda Baer , Hung-chin Guthrie , Yimin Hsu , Ming Jiang , Aron Pentek
发明人： Amanda Baer , Hung-chin Guthrie , Yimin Hsu , Ming Jiang , Aron Pentek
IPC分类号： H01L21/311
CPC分类号： G11B5/1278 , G11B5/112 , G11B5/3163 , Y10T29/49032 , Y10T29/49043 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： Methods for improving within wafer and wafer to wafer yields during fabrication of notched trailing shield structures are disclosed. Ta/Rh CMP stop layers are deposited prior to planarization and notch formation to ensure a planar surface for trailing shield structures. These stop layers may be blanket deposited or patterened prior to CMP. Patterned stop layers produce the highest yields.
摘要翻译：公开了在制造缺口尾部屏蔽结构期间在晶片和晶片之间改善晶片产量的方法。在平坦化和切口形成之前沉积Ta / Rh CMP停止层以确保用于尾部屏蔽结构的平坦表面。这些停止层可以在CMP之前被铺平或沉积。图案化的停止层产生最高的产量。

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