公开(公告)号：US06493926B2

公开(公告)日：2002-12-17

申请号：US09835023

申请日：2001-04-16

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

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

IPC分类号： G11B5127

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3116 ,  G11B5/3163 ,  G11B5/3903 ,  G11B2005/3996 ,  Y10T29/49032 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49052

摘要： A method for forming a bi-layer lift-off mask for use in fabricating an abutted junction type GMR read-head sensor with a narrow trackwidth of less than 0.5 microns. The mask has a novel suspension bridge structure that avoids problems associated with bilayer lift-off masks of the prior art, namely insufficient or excessive undercutting of the lower layer that produces fence formations in the conducting lead layer or collapse of the mask structure rendering removal difficult.

摘要翻译： 一种形成双层剥离掩模的方法，用于制造窄轨迹宽度小于0.5微米的邻接结型GMR读取头传感器。 掩模具有新颖的悬挂桥结构，其避免了与现有技术的双层剥离掩模相关的问题，即在导电引线层中产生栅栏结构的下层的不足或过度的底切或掩模结构的塌陷使得难以去除 。

公开(公告)号：US06591480B1

公开(公告)日：2003-07-15

申请号：US09570235

申请日：2000-05-12

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

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

IPC分类号： G11B5127

CPC分类号： G11B5/3116 ,  G11B5/313 ,  G11B5/3146 ,  G11B5/3163 ,  Y10T29/49032 ,  Y10T29/49041 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

摘要： A method for fabricating a flux concentrating stitched write head for high data rate applications wherein said flux concentration is achieved by means of a non-magnetic step embedded into a portion of the lower magnetic pole just beneath the write gap layer. The design permits extremely short throat heights, which will be required by future high data rate applications.

摘要翻译： 一种制造用于高数据速率应用的通量集中缝合写头的方法，其中所述磁通量集中通过嵌入到写间隙层正下方的下磁极的一部分中的非磁性步骤来实现。 该设计允许极短的喉部高度，这将是未来高数据速率应用所需要的。

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

公开(公告)号：US07196876B2

公开(公告)日：2007-03-27

申请号：US10236359

申请日：2002-09-06

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

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

IPC分类号： G11B5/39 ,  G11B5/33 ,  G11B5/127

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3163 ,  G11B5/3903 ,  Y10T29/49044 ,  Y10T29/49052

摘要： A method for forming an abutted junction GMR bottom spin valve sensor in which the free layer has a maximum effective length due to the elimination or minimization of bias layer and conducting lead layer overspreading onto the sensor element and the consequent reduction of current shunting. The overspreading is eliminated by forming a thin dielectric layer on the upper surface of the sensor element. When the biasing and conducting leads are formed on the abutted junction, they overspread onto this layer and the overspread can be removed by an ion-milling process during which the dielectric layer protects the sensor.

摘要翻译： 用于形成邻接结GMR底部自旋阀传感器的方法，其中自由层由于偏置层的消除或最小化而导致最大有效长度，并且导致引线层过度传播到传感器元件上，从而减少了电流分流。 通过在传感器元件的上表面上形成薄的电介质层来消除超扩展。 当偏置和导电引线形成在邻接接头上时，它们被扩展到该层上，并且可以通过离子铣削工艺去除超扩展，其中电介质层保护传感器。

公开(公告)号：US06826015B2

公开(公告)日：2004-11-30

申请号：US10453048

申请日：2003-06-03

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

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

IPC分类号： G11B531

CPC分类号： G11B5/3116 ,  G11B5/313 ,  G11B5/3146 ,  G11B5/3163 ,  Y10T29/49032 ,  Y10T29/49041 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

摘要： A flux concentrating stitched write head design for high data rate applications is provided. The flux concentration is achieved by means of a non-magnetic step embedded into a portion of the lower magnetic pole of the write head, just beneath the write gap layer. The design permits extremely short throat heights, which will be required by future high data rate applications.

摘要翻译： 提供了一种用于高数据速率应用的通量集中缝合写头设计。 磁通量集中通过嵌入写入头下部磁极的一部分的非磁性步骤来实现，正好位于写入间隙层的正下方。 该设计允许极短的喉部高度，这将是未来高数据速率应用所需要的。

公开(公告)号：US07320168B2

公开(公告)日：2008-01-22

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 ,  H04R31/00

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。

公开(公告)号：US06415500B1

公开(公告)日：2002-07-09

申请号：US09482050

申请日：2000-01-13

申请人： Cherng-Chyi Han ,  Mao-Min Chen ,  Jen-Wei Koo ,  Rodney Lee ,  Li-Yan Zhu ,  Jei-Wei Chang

发明人： Cherng-Chyi Han ,  Mao-Min Chen ,  Jen-Wei Koo ,  Rodney Lee ,  Li-Yan Zhu ,  Jei-Wei Chang

IPC分类号： G11B5127

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3163 ,  G11B5/3173 ,  G11B5/3903 ,  G11B5/40 ,  G11B2005/3996 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49156 ,  Y10T29/49165

摘要： Methods and structures are disclosed which avoid electrostatic charge build up and subsequent electrostatic discharge (ESD) during the wafer fabrication process of magnetoresistive (MR) or giant magnetoresistive (GMR) read/write heads of magnetic disk drives. This is achieved by designing the wafer layout and process so that the MR/GMR sensor film is shorted to the magnetic shields of the head through shorting paths so that there is an equal potential between MR/GMR sensor film and magnetic shields during the entire fabrication process.

摘要翻译： 公开了在磁阻（MR）或巨磁阻（GMR）读/磁头磁盘驱动器的晶片制造过程中避免静电电荷累积和随后的静电放电（ESD）的方法和结构。 这通过设计晶片布局和工艺来实现，使得MR / GMR传感器膜通过短路路径短路到磁头的磁屏蔽，使得在整个制造期间MR / GMR传感器膜和磁屏蔽之间具有相等的电位 处理。

公开(公告)号：US20070266551A1

公开(公告)日：2007-11-22

申请号：US11881316

申请日：2007-07-26

申请人： Cherng-Chyi Han ,  Mao-Min Chen ,  Laurie Lauchlan ,  Lei Zhang

发明人： Cherng-Chyi Han ,  Mao-Min Chen ,  Laurie Lauchlan ,  Lei Zhang

IPC分类号： G11B5/127 ,  H04R31/00

CPC分类号： G11B5/33 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/4906 ,  Y10T29/49062 ,  Y10T29/49064

摘要： Aggressive (i.e. tight tolerance) stitching offers several advantages for magnetic write heads but at the cost of some losses during pole trimming. This problem has been overcome by replacing the alumina filler layer, that is used to protect the stitched pole during trimming, with a layer of electroplated material. Because of the superior step coverage associated with the plating method of deposition, pole trimming can then proceed without the introduction of stresses to the stitched pole while it is being trimmed.

摘要翻译： 积极（即紧公差）缝合为磁性写入头提供了几个优点，但是在极修整期间以一些损失为代价。 通过用一层电镀材料替换用于在修整期间保护缝合极的氧化铝填料层已经克服了这个问题。 由于与沉积电镀方法相关的优越的台阶覆盖，因此可以进行极细修剪，而不会在缝合极被修剪时引入应力。

公开(公告)号：US20060164766A1

公开(公告)日：2006-07-27

申请号：US11375323

申请日：2006-03-14

申请人： Yun-Fei Li ,  Hui-Chuan Wang ,  Chyu-Jiuh Torng ,  Cherng-Chyi Han ,  Mao-Min Chen

发明人： Yun-Fei Li ,  Hui-Chuan Wang ,  Chyu-Jiuh Torng ,  Cherng-Chyi Han ,  Mao-Min Chen

IPC分类号： G11B5/33 ,  B05D5/12 ,  G11B5/127

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3163 ,  G11B5/3903 ,  G11B5/3932 ,  G11B2005/3996 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

摘要： Although it is known that exchange bias can be utilized in abutted junctions for longitudinal stabilization, a relatively large moment is needed to pin down the sensor edges effectively. Due to the inverse dependence of the exchange bias on the magnetic layer thickness, a large exchange bias has been difficult to achieve by the prior art. This problem has been solved by introducing a structure in which the magnetic moment of the bias layer has been approximately doubled by pinning it from both above and below through exchange with antiferromagnetic layers. Additionally, since the antiferromagnetic layer is in direct abutted contact with the free layer, it acts directly to help stabilize the sensor edge, which is an advantage over the traditional magnetostatic pinning that had been used.

公开(公告)号：US07061730B2

公开(公告)日：2006-06-13

申请号：US10649456

申请日：2003-08-27

申请人： Cheng T. Horng ,  Mao-Min Chen ,  Chen-Jung Chien ,  Cherng-Chyi Han ,  Chyu-Jiuh Torng ,  Ru-Ying Tong

发明人： Cheng T. Horng ,  Mao-Min Chen ,  Chen-Jung Chien ,  Cherng-Chyi Han ,  Chyu-Jiuh Torng ,  Ru-Ying Tong

IPC分类号： G11B5/39

CPC分类号： B82Y25/00 ,  G11B5/4853 ,  G11B5/486 ,  H01F10/324 ,  H01F10/3268

摘要： A spin-valve magnetoresistive read element has a thin conductive lead layer of high sheet conductivity, high hardness, high melting point, high corrosion resistance and lacking the propensity for smearing, oozing, electromigration and nodule formation. Said lead layer is formed upon the hard magnetic longitudinal bias layer of an abutted junction spin-valve type magnetoresistive read head and said read head is therefore suitable for reading high density recorded disks at high RPM.

摘要翻译： 自旋阀磁阻读取元件具有导电性高，硬度高，熔点高，耐腐蚀性高，缺乏涂抹，渗出，电迁移和结核形成倾向的薄导电铅层。 所述引线层形成在接触自旋阀型磁阻读取头的硬磁纵向偏置层上，因此所述读头适用于以高RPM读取高密度记录盘。