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11. 发明授权

US07389577B1 Method to fabricate an ESD resistant tunneling magnetoresistive read transducer 有权
标题翻译：制造耐ESD隧道磁阻读取传感器的方法
公开(公告)号：US07389577B1
公开(公告)日：2008-06-24
申请号：US11768883
申请日：2007-06-26
申请人： Changhe Shang , Yun-Fei Li , Yining Hu , Yong Shen
发明人： Changhe Shang , Yun-Fei Li , Yining Hu , Yong Shen
IPC分类号： G11B5/127 , H04R31/00
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G11B5/3906 , Y10T29/49039 , Y10T29/49043 , Y10T29/49044
摘要： A method to fabricate a tunneling magnetoresistive (TMR) read transducer is disclosed. An insulative layer is deposited on a wafer substrate, and a bottom lead is deposited over the insulative layer. A laminated TMR layer, having a plurality of laminates, is deposited over the bottom lead. A TMR sensor having a stripe height is defined in the TMR layer, and a parallel resistor and first and second shunt resistors are also defined in the TMR layer. A top lead is deposited over the TMR sensor. The parallel resistor is electrically connected to the bottom lead and to the top lead. The first shunt resistor is electrically connected to the bottom lead and the wafer substrate, and the second shunt resistor is electrically connected to the top lead and the wafer substrate.
摘要翻译：公开了一种制造隧道磁阻（TMR）读出传感器的方法。绝缘层沉积在晶片衬底上，底部引线沉积在绝缘层上。具有多个层压体的叠层TMR层沉积在底部引线上。具有条纹高度的TMR传感器定义在TMR层中，并且还在TMR层中定义并联电阻器和第一和第二分流电阻器。顶部引线沉积在TMR传感器上。并联电阻器电连接到底部引线和顶部引线。第一分流电阻器电连接到底部引线和晶片衬底，并且第二分流电阻器电连接到顶部引线和晶片衬底。

12. 发明申请

US20050083606A1 Write head design with improved bump to control write saturation 失效
标题翻译：写头设计具有改进的凸块来控制写入饱和度
公开(公告)号：US20050083606A1
公开(公告)日：2005-04-21
申请号：US10687284
申请日：2003-10-15
申请人： Edward Lee , Katalin Pentek , Yong Shen , Sue Zhang
发明人： Edward Lee , Katalin Pentek , Yong Shen , Sue Zhang
IPC分类号： G11B5/127 , G11B5/147 , G11B5/60
CPC分类号： G11B5/60 , G11B5/127 , G11B5/147
摘要： A magnetic head having an air bearing surface (ABS) and a first pole tip. A second pole tip is spaced apart from and facing the upper end of the first pole tip across a write gap. A bump extends into a portion of the upper end of the first pole tip and a portion of the bottom end of the second pole tip, the bump being positioned away from the ABS. The bump defines a throat height of the first and second pole tips.
摘要翻译：具有空气轴承表面（ABS）和第一极端的磁头。第二极尖与间隙隔开并面对第一极尖的上端。凸块延伸到第一极尖端的上端的一部分和第二极尖的底端的一部分，凸块被定位成远离ABS。凸块限定第一和第二极尖的喉部高度。

13. 发明申请

US20050068677A1 Stitched write head with staircase P2 defined throat height 失效
标题翻译：缝编写头与楼梯P2定义喉部高度
公开(公告)号：US20050068677A1
公开(公告)日：2005-03-31
申请号：US10675736
申请日：2003-09-29
申请人： Yong Shen , Sue Zhang
发明人： Yong Shen , Sue Zhang
IPC分类号： G11B5/31 , G11B5/147
CPC分类号： G11B5/3116 , Y10T29/49032
摘要： A method of making a magnetic write head assembly, which has a head surface and a track width, comprises the steps of forming a first pole piece layer of a first pole piece which has a pole tip portion, a back gap portion which is recessed from the head surface and a yoke portion which is located between the pole tip and back gap portions, forming an insulation stack with at least one coil layer embedded therein on the yoke portion of the first pole piece layer, forming a pedestal of the first pole piece on the pole tip portion of the first pole piece layer, forming a write gap layer on the pedestal, forming on a substantially planar surface a first component of a second pole piece on the write gap layer with the width at the head surface which is greater than the track width and with a throat height which extends from the head surface into the head assembly where the first and second pole pieces first commence to separate after the head surface, forming a second component of the second pole piece which has a track width on the first component and, with the second component employed as a mask, ion milling the first component to define the first component with the track width.
摘要翻译：一种具有头表面和轨道宽度的磁写头组件的制造方法包括以下步骤：形成具有极尖部分的第一极片的第一极片层，头表面和磁轭部分，其位于极尖和后间隙部分之间，形成绝缘叠层，其中嵌有至少一个线圈层的第一极片层的磁轭部分，形成第一极片的基座在第一极片层的极尖部分上，在基座上形成写间隙层，在基本上平坦的表面上形成第二极片的第一部件在写间隙层上，其顶表面的宽度较大具有从头部表面延伸到头部组件中的轨道宽度和喉部高度，其中第一和第二极靴首先开始在头部表面之后分离，形成第二部分的第二部分 d极片，其具有在第一部件上的轨道宽度，并且将第二部件用作掩模，离子铣削第一部件以限定具有轨道宽度的第一部件。

14. 发明授权

US06195229B1 Thin film MR head and method of making wherein pole trim takes place at the wafer level 有权
标题翻译：薄膜MR磁头及其制造方法，其中磁极修整发生在晶片级
公开(公告)号：US06195229B1
公开(公告)日：2001-02-27
申请号：US09385844
申请日：1999-08-30
申请人： Yong Shen , Bertha Higa-Baral , Lien-Chang Wang
发明人： Yong Shen , Bertha Higa-Baral , Lien-Chang Wang
IPC分类号： G11B533
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3116 , G11B5/3163 , G11B5/3967 , G11B2005/3996 , Y10T29/49032 , Y10T29/49046
摘要： A method of manufacturing a thin film merged magnetic head including an inductive write structure and a magnetoresistive sensor uses a patterned protection layer to protect a second shield/bottom pole layer in regions spaced from the pole tip of the inductive write structure. A window is provided in the protection layer. During manufacture, the configuration comprises a first shield layer, a magnetoresistive element, a second shield layer serving as a bottom pole, a protection layer, a protection window, a write gap, a top pole, and a pole tip structure. The use of a protection layer and window results in the formation of channels in the second shield layer adjacent to a pedestal that supports the inductive write structure. The channels prevent magnetic flux from extending toward the second shield layer beyond the width of the pole tip structure. This structure reduces side writing with a consequent improvement in off-track performance. The width of the second shield layer allows the magnetoresistive element to be shielded.
摘要翻译：制造包括电感写入结构和磁阻传感器的薄膜合并磁头的方法使用图案化保护层来保护与电感写入结构的磁极末端隔开的区域中的第二屏蔽/底极层。在保护层中设置一个窗口。在制造时，该结构包括第一屏蔽层，磁阻元件，用作底极的第二屏蔽层，保护层，保护窗，写间隙，顶极和极尖结构。使用保护层和窗口导致在与支撑感性写入结构的基座相邻的第二屏蔽层中形成通道。通道防止磁通量向第二屏蔽层延伸超过极端结构的宽度。这种结构减少了侧面写入，从而改善了非轨道性能。第二屏蔽层的宽度允许屏蔽磁阻元件。

15. 发明授权

US5438470A Magnetoresistive structure with contiguous junction hard bias design with low lead resistance 失效
标题翻译：具有连续接合硬偏置设计，具有低引线电阻的磁阻结构
公开(公告)号：US5438470A
公开(公告)日：1995-08-01
申请号：US242457
申请日：1994-05-13
申请人： Durga Ravipati , Yong Shen , William C. Cain
发明人： Durga Ravipati , Yong Shen , William C. Cain
IPC分类号： G11B5/31 , G11B5/39 , G11B5/33
CPC分类号： G11B5/399
摘要： A magnetoresistive read transducer includes a magnetoresistive (MR) layer having end regions spaced by a central active regions. A pair of hard-magnetic layers provide the longitudinal magnetic bias to the magnetoresistive layer. Each of the hard-magnetic layers is disposed in contact with one of the end regions of the magnetoresistive layer. In addition, a pair of electrical leads provide the bias current to the magnetoresistive layer. Each of the electrical leads is also disposed in contact with one of the end regions of the magnetoresistive layer. This arrangement enable the transducer of the present invention with the most optimal design. In essence, electrical current directly passes through the central active region of the magnetoresistive layer via the electrical leads as a low electrical resistance path. Magnetic flux of the longitudinal bias directly passes through the central active region of the magnetoresistive layer with a reduced probability of magnetic discontinuity.
摘要翻译：磁阻读取换能器包括具有由中心有源区间隔的端部区域的磁阻（MR）层。一对硬磁性层向磁阻层提供纵向磁偏置。每个硬磁性层被设置成与磁阻层的一个端部区域接触。此外，一对电引线向磁阻层提供偏置电流。每个电引线也设置成与磁阻层的一个端部区域接触。这种布置使得本发明的换能器具有最佳的设计。本质上，电流作为低电阻通路经由电引线直接通过磁阻层的中心有源区。纵向偏置的磁通直接通过磁阻层的中心有源区，磁性不连续的概率降低。

16. 发明授权

US08545999B1 Method and system for providing a magnetoresistive structure 有权
标题翻译：提供磁阻结构的方法和系统
公开(公告)号：US08545999B1
公开(公告)日：2013-10-01
申请号：US12035036
申请日：2008-02-21
申请人： Qunwen Leng , Mahendra Pakala , Yong Shen
发明人： Qunwen Leng , Mahendra Pakala , Yong Shen
IPC分类号： G11B5/39 , H01F10/08 , H01L43/12
CPC分类号： G11B5/3909 , G01R33/098 , H01F10/3272 , H01F10/3295 , H01F41/307 , H01L43/08 , H01L43/10 , H01L43/12
摘要： A method and system for providing a magnetoresistive structure are described. The magnetoresistive structure includes a first electrode, an insertion layer, a crystalline tunneling barrier layer, and a second electrode. The first electrode includes at least a first magnetic material and boron. The crystalline tunneling barrier layer includes at least one constituent. The insertion layer has a first boron affinity. The at least one constituent of the crystalline tunneling barrier layer has at least a second boron affinity that is less than the first boron affinity. The second electrode includes at least a second magnetic material.
摘要翻译：描述了一种用于提供磁阻结构的方法和系统。磁阻结构包括第一电极，插入层，结晶隧道势垒层和第二电极。第一电极至少包括第一磁性材料和硼。结晶隧道势垒层包括至少一种成分。插入层具有第一硼亲合力。结晶隧道势垒层的至少一个成分具有小于第一硼亲和力的至少第二硼亲和力。第二电极包括至少第二磁性材料。

17. 发明授权

US08174779B2 Discrete device testing 有权
标题翻译：分立器件测试
公开(公告)号：US08174779B2
公开(公告)日：2012-05-08
申请号：US11591080
申请日：2006-10-31
申请人： Terry Farren , Heng Gong , Yong Shen , Jing Zhang
发明人： Terry Farren , Heng Gong , Yong Shen , Jing Zhang
IPC分类号： G11B27/36
CPC分类号： G06F11/26
摘要： One embodiment in accordance with the invention is a method that comprises testing a first number of physical devices using a first test sequence that comprises an item. A second number of physical devices are tested using a second test sequence. It is noted that the second test sequence comprises the item of the first test and a second item.
摘要翻译：根据本发明的一个实施例是一种方法，其包括使用包括项目的第一测试序列来测试第一数量的物理设备。使用第二测试序列测试第二数量的物理设备。注意，第二测试序列包括第一测试项目和第二项目。

18. 发明授权

US07288935B2 System, method, and apparatus for dynamic electrical testing of workpieces by multiplexing test sites with shared electronics 有权
标题翻译：通过将测试点与共享电子元件进行多路复用，对工件进行动态电气测试的系统，方法和装置
公开(公告)号：US07288935B2
公开(公告)日：2007-10-30
申请号：US11107186
申请日：2005-04-15
申请人： Terry Farren , Yong Shen
发明人： Terry Farren , Yong Shen
IPC分类号： G01R33/00
CPC分类号： G11B5/455
摘要： A dynamic electrical tester (DET) for testing head gimbal assemblies (HGA) is disclosed. The DET simulates disk drive operation while significantly reducing tester capital investment. Multiple HGAs are tested simultaneously using modular spin stands with shared electronics. This design increases utilization of electronics and minimizes the effect of spindle start/stop time. A parallel array of spin stands with shared electronics is used to reduce tester component and materials cost by multiplexing between the spin stands. The DET has the significant advantage of reducing wait time by making use of the electronics while they are idle during mechanical-related delays. In addition, the DET includes more channels per test head that can readily switch back and forth between the products being tested.
摘要翻译：公开了一种用于测试头万向架组件（HGA）的动态电气测试仪（DET）。 DET模拟磁盘驱动器操作，同时显着减少测试人员的投资。使用具有共享电子设备的模块化旋转架同时测试多个HGA。这种设计提高了电子元件的利用率，并最大限度地减少了主轴启动/停止时间的影响。具有共享电子设备的并联阵列旋转架用于通过在旋转架之间进行复用来降低测试仪组件和材料成本。 DET具有通过在机械相关延迟期间空闲时利用电子设备来减少等待时间的显着优点。此外，DET包括每个测试头更多的通道，可以在被测产品之间轻松切换。

19. 发明授权

US06989964B2 Magnetic head having a pole piece with a double pedestal structure 失效
标题翻译：磁头具有带双底座结构的极片
公开(公告)号：US06989964B2
公开(公告)日：2006-01-24
申请号：US10462535
申请日：2003-06-16
申请人： Yimin Hsu , Gautam Mohan Khera , Yong Shen
发明人： Yimin Hsu , Gautam Mohan Khera , Yong Shen
IPC分类号： G11B5/147
CPC分类号： G11B5/3116
摘要： A magnetic head which includes a pole piece with a double pedestal structure has improved overwrite capabilities and reduced fringing fields. The magnetic head has first and second pole pieces and a gap layer which separates the first and the second pole pieces. The first pole piece includes a first pole piece layer, a bottom pedestal portion formed over the first pole piece layer at an air bearing surface (ABS), and a top pedestal portion formed over the bottom pedestal portion. The top pedestal portion has a thickness that is no more than half of that of the bottom pedestal portion and a length that is no more than half of that of the bottom pedestal portion. Advantageously, a throat height of the magnetic head is reduced from use of the top pedestal portion whereas the mechanical reliability of the first pole piece is increased from use of the bottom pedestal portion.
摘要翻译：包括具有双基座结构的极片的磁头具有改进的覆盖能力和减少的边缘场。磁头具有第一和第二极片以及分隔第一和第二极片的间隙层。第一极靴包括第一极靴层，在空气轴承表面（ABS）上形成在第一极靴层上的底座部分，以及形成在底部底座部分上的顶部底座部分。顶部基座部分的厚度不大于底部底座部分的一半的厚度，并且其长度不超过底部基座部分的一半的长度。有利地，磁头的喉部高度从使用顶部底座部分减小，而第一极靴的机械可靠性从使用底座部分增加。

20. 发明授权

US06193584B1 Apparatus and method of device stripe height control 有权
标题翻译：装置条纹高度控制装置及方法
公开(公告)号：US06193584B1
公开(公告)日：2001-02-27
申请号：US09321486
申请日：1999-05-27
申请人： Steven C. Rudy , Curtis V. Macchioni , Yong Shen , Billy W. Crue, Jr. , Michael T. Harnischfeger , Steven J. Plewes
发明人： Steven C. Rudy , Curtis V. Macchioni , Yong Shen , Billy W. Crue, Jr. , Michael T. Harnischfeger , Steven J. Plewes
IPC分类号： B24B100
CPC分类号： B24B37/30 , B24B37/013 , B24B49/10 , G11B5/3116 , G11B5/3166 , G11B5/3169 , G11B5/3173 , G11B5/3903 , G11B5/3967 , Y10T29/49004 , Y10T29/49048
摘要： A lapping guide for use in fabrication of a device includes a first resistive element and a second resistive element. The two resistive elements can provide different changing resistances throughout the lapping of the device. These two resistances can be used throughout the lapping of the device to facilitate determination of when a predetermined desired height of the device has been achieved, and therefore stop the lapping of the device. The resistive elements can be physically adjacent to each other or separate from each other. Further, a common lead can be electrically connected to both resistive elements for measuring their respective resistances. In addition, the resistive elements can be separated from each other by the device.
摘要翻译：用于制造器件的研磨引导件包括第一电阻元件和第二电阻元件。两个电阻元件可以在器件的整个研磨过程中提供不同的变化电阻。这两个电阻可以在装置的整个研磨过程中使用，以便于确定何时已经实现了装置的预定的期望高度，因此停止了装置的研磨。电阻元件可以在物理上彼此相邻或彼此分离。此外，公共引线可以电连接到两个电阻元件，以测量它们各自的电阻。此外，电阻元件可以通过该装置彼此分离。

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