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21. 发明授权

US07999566B2 Wafer level testing 有权
标题翻译：晶圆级测试
公开(公告)号：US07999566B2
公开(公告)日：2011-08-16
申请号：US12006406
申请日：2007-12-31
申请人： Robert S. Beach , Arley C. Marley , David J. Seagle
发明人： Robert S. Beach , Arley C. Marley , David J. Seagle
IPC分类号： G01R31/26
CPC分类号： G01R31/2884 , G01R31/2831 , G01R31/318505 , G11B5/3166 , G11B5/3903
摘要： A wafer comprises a kerf region and a test chip. The kerf is a region in a wafer designated to be destroyed by chip dicing. The test chip is located within the kerf region and is configured to provide parametric data for a wafer fabrication process of a head. The test chip comprises a shield portion of a first shield layer electrically coupled to an element, a first pad within a second shield layer electrically coupled to the element, and a second pad within the second shield layer electrically coupled to the shield portion.
摘要翻译：晶片包括切口区域和测试芯片。切屑是指定通过芯片切割破坏的晶片中的区域。测试芯片位于切口区域内并且被配置为提供头部的晶片制造过程的参数数据。测试芯片包括电耦合到元件的第一屏蔽层的屏蔽部分，电耦合到元件的第二屏蔽层内的第一焊盘以及电耦合到屏蔽部分的第二屏蔽层内的第二焊盘。

22. 发明申请

US20090168216A1 TEST COMPONENTS FABRICATED WITH PSEUDO SENSORS USED FOR DETERMINING THE RESISTANCE OF AN MR SENSOR 有权
标题翻译：用于确定MR传感器电阻的PSEUDO传感器的测试组件
公开(公告)号：US20090168216A1
公开(公告)日：2009-07-02
申请号：US11965612
申请日：2007-12-27
申请人： Robert S. Beach , Mary K. Gutberlet , David J. Seagle
发明人： Robert S. Beach , Mary K. Gutberlet , David J. Seagle
IPC分类号： G11B27/36
CPC分类号： G11B5/3173 , G11B5/3166 , G11B5/3193 , G11B5/3903
摘要： Test methods and components are disclosed for testing resistances of magnetoresistance (MR) sensors in read elements. Test components are fabricated on a wafer with a first test lead, a pseudo sensor, and a second test lead. The test leads and MR sensor are fabricated with similar processes as first shields, MR sensors, and second shields of read elements on the wafer. However, the pseudo sensor in the test component is fabricated with lead material (or another material having similar resistance properties) instead of an MR thin-film structure like an MR sensor. Forming the pseudo sensor from lead material causes the resistance of the pseudo sensor to be insignificant compared to the lead resistance. Thus, a resistance measurement of the test component represents the lead resistance of a read element. An accurate resistance measurement of an MR sensor in a read element may then be determined by subtracting the lead resistance.
摘要翻译：公开了用于测试读取元件中的磁阻（MR）传感器的电阻的测试方法和组件。在具有第一测试导线，伪传感器和第二测试导线的晶片上制造测试部件。测试引线和MR传感器采用与晶片上的读取元件的第一屏蔽，MR传感器和第二屏蔽件类似的工艺制造。然而，测试部件中的伪传感器用诸如MR传感器的MR薄膜结构的铅材料（或具有相似电阻特性的另一种材料）代替。从铅材料形成伪传感器导致伪传感器的电阻与引线电阻相比不显着。因此，测试部件的电阻测量表示读取元件的引线电阻。然后可以通过减去引线电阻来确定读取元件中的MR传感器的精确电阻测量。

23. 发明申请

US20090167333A1 Wafer level testing 有权
标题翻译：晶圆级测试
公开(公告)号：US20090167333A1
公开(公告)日：2009-07-02
申请号：US12006406
申请日：2007-12-31
申请人： Robert S. Beach , Arley C. Marley , David J. Seagle
发明人： Robert S. Beach , Arley C. Marley , David J. Seagle
IPC分类号： G01R31/02 , G01R31/26
CPC分类号： G01R31/2884 , G01R31/2831 , G01R31/318505 , G11B5/3166 , G11B5/3903
摘要： A wafer comprises a kerf region and a test chip. The kerf is a region in a wafer designated to be destroyed by chip dicing. The test chip is located within the kerf region and is configured to provide parametric data for a wafer fabrication process of a head. The test chip comprises a shield portion of a first shield layer electrically coupled to an element, a first pad within a second shield layer electrically coupled to the element, and a second pad within the second shield layer electrically coupled to the shield portion.
摘要翻译：晶片包括切口区域和测试芯片。切屑是指定通过芯片切割破坏的晶片中的区域。测试芯片位于切口区域内并且被配置为提供头部的晶片制造过程的参数数据。测试芯片包括电耦合到元件的第一屏蔽层的屏蔽部分，电耦合到元件的第二屏蔽层内的第一焊盘以及电耦合到屏蔽部分的第二屏蔽层内的第二焊盘。

24. 发明申请

US20080273265A1 Determining smear of a hard disk drive slider 审中-公开
标题翻译：确定硬盘驱动器滑块的拖尾
公开(公告)号：US20080273265A1
公开(公告)日：2008-11-06
申请号：US11800262
申请日：2007-05-03
申请人： Glenn P. Gee , David J. Seagle , Hicham M. Sougrati , Jila Tabib , Xiao Z. Wu
发明人： Glenn P. Gee , David J. Seagle , Hicham M. Sougrati , Jila Tabib , Xiao Z. Wu
IPC分类号： G11B21/02
CPC分类号： G11B5/3166 , G11B5/102 , G11B5/3169
摘要： A disk drive head slider for a magnetic disk drive is provided. The head slider includes a tunnel magnetic resistance device for reading data on a magnetic disk and a dedicated sensor for measuring resistance wherein the resistance corresponds to a level of smear associated with the head slider.
摘要翻译：提供了用于磁盘驱动器的磁盘驱动器磁头滑块。头滑动器包括用于读取磁盘上的数据的隧道磁阻装置和用于测量电阻的专用传感器，其中电阻对应于与磁头滑块相关联的拖尾水平。

25. 发明授权

US07446977B2 Recording heads having electrical pads on multiple surfaces 失效
标题翻译：在多个表面上具有电焊盘的记录头
公开(公告)号：US07446977B2
公开(公告)日：2008-11-04
申请号：US11043490
申请日：2005-01-26
申请人： Vladimir Nikitin , David J. Seagle
发明人： Vladimir Nikitin , David J. Seagle
IPC分类号： G11B5/60
CPC分类号： G11B5/6005 , G11B5/3173 , G11B5/4853
摘要： A recording head is disclosed that includes electrical pads on multiple surfaces. The recording head includes a substrate portion abutting a deposited portion. The deposited portion includes an air bearing surface (ABS) (or bottom surface), an end surface, and at least one other surface. The end surface is the surface traditionally used by head designers for electrical pads. In accord with the invention, one or more electrical pads are included on the other surfaces of the deposited portion (i.e., a surface other than the end surface). Electrical pads may also be included on the end surface.
摘要翻译：公开了一种包括多个表面上的电焊盘的记录头。记录头包括邻接沉积部分的基底部分。沉积部分包括空气轴承表面（ABS）（或底表面），端表面和至少另一个表面。端面是传统上由头设计师用于电焊盘的表面。根据本发明，一个或多个电焊盘包括在沉积部分的其它表面（即除了端面之外的表面）上。电焊盘也可以包括在端面上。

26. 发明授权

US07292409B1 Magnetic head with thin trailing pedestal layer 失效
标题翻译：磁头与薄拖尾基座层
公开(公告)号：US07292409B1
公开(公告)日：2007-11-06
申请号：US10788766
申请日：2004-02-27
申请人： Kroum S. Stoev , Francis H. Liu , James H. Wang , Marcos M. Lederman , David J. Seagle
发明人： Kroum S. Stoev , Francis H. Liu , James H. Wang , Marcos M. Lederman , David J. Seagle
IPC分类号： G11B5/147 , G11B5/17 , G11B5/187
CPC分类号： G11B5/3146 , G11B5/17 , G11B5/3116 , G11B5/3123
摘要： A magnetic head for a disk drive is disclosed that has a first soft magnetic pole layer disposed in the head adjacent to a medium-facing surface and extending perpendicular to the medium-facing surface; a second soft magnetic pole layer disposed closer than the first pole layer to the trailing end, the second pole layer magnetically coupled to the first pole layer in a backgap region; a soft magnetic pedestal adjoining the second pole layer, disposed closer than the second pole layer to the medium-facing surface and extending less than the second pole layer extends from the medium-facing surface, the pedestal separated from the first pole layer by a nonferromagnetic gap, the pedestal having a thickness that is less than four hundred and fifty nanometers between the gap and the second pole layer. Longitudinal and perpendicular recording embodiments are disclosed, as well as solenoidal, single-layer and dual-layer reversed-current coil structures.
摘要翻译：公开了一种用于磁盘驱动器的磁头，其具有第一软磁极层，该第一软磁极层设置在与中间面向表面相邻并且垂直于介质面向表面延伸的头部中; 第二软磁极层，设置成比所述第一极层更靠近所述后端，所述第二极层在后隙区域中磁耦合到所述第一极层; 邻近第二极层的软磁性基座设置成比第二极层更靠近介质相对表面并且延伸小于第二极层从中介面向表面延伸，基座与第一极层分离，由非铁磁间隙，所述基座在所述间隙和所述第二极层之间具有小于四百五十纳米的厚度。公开纵向和垂直记录实施例，以及螺线管，单层和双层反向电流线圈结构。

27. 发明授权

US07116517B1 Stitched pole write element with a T-shaped pole tip portion 有权
标题翻译：带有T形极端部分的针脚写入元件
公开(公告)号：US07116517B1
公开(公告)日：2006-10-03
申请号：US10323128
申请日：2002-12-18
申请人： Qing He , Hirohiko Kamimura , Shuhei Otani , Yugang Wang , David J. Seagle
发明人： Qing He , Hirohiko Kamimura , Shuhei Otani , Yugang Wang , David J. Seagle
IPC分类号： G11B5/147
CPC分类号： G11B5/3116 , G11B5/3113 , G11B5/3133
摘要： A T-shaped pole tip portion of an upper pole of a write element for a magnetic disk drive is provided. One end of the pole tip portion, constituting the bottom of the “T,” forms a narrow nose segment at an air bearing surface, while a wing segment at the opposite end of the pole tip portion constitutes the cross-bar top of the “T.” A transition segment extends between the nose segment and the wing segment. A yoke portion of the upper pole includes a surface that is parallel to the air bearing surface and recessed therefrom by a P3R depth. The transition segment does not widen significantly until after the P3R depth, accordingly, the wing segment is recessed from the air bearing surface by more than the P3R depth.
摘要翻译：提供了用于磁盘驱动器的写入元件的上极的T形极尖部分。构成“T”底部的极端部的一端在空气轴承面形成窄的鼻部，而在极尖部的另一端的翼部构成“ T.“ 过渡段在鼻段和翼段之间延伸。上极的轭部包括平行于空气轴承表面并且通过P 3 R深度从其中凹入的表面。在P 3 R深度之后，过渡段不会显着扩大，因此翼段从空气轴承表面凹陷多于P 3 R深度。

28. 发明授权

US06870712B2 Inductive writer with flat top pole and pedestal defined zero throat 失效
标题翻译：具有平顶极和底座的感应写入器定义为零喉
公开(公告)号：US06870712B2
公开(公告)日：2005-03-22
申请号：US09875601
申请日：2001-06-05
申请人： Yingjian Chen , James Wang , Qing He , Zi-Wen Dong , David J. Seagle
发明人： Yingjian Chen , James Wang , Qing He , Zi-Wen Dong , David J. Seagle
IPC分类号： G11B5/012 , G11B5/31 , G11B5/33 , G11B5/39 , G11B5/147
CPC分类号： G11B5/3967 , G11B5/012 , G11B5/3116 , G11B5/313 , G11B5/3146 , Y10T29/49044
摘要： A disk drive write head (10) having a bottom pole (60), a first insulation layer (64) formed on the bottom pole (60), a coil (38) formed on the first insulation layer (64), a second insulation layer (66) formed on the coil (38), a write gap layer (76) formed on the second insulation layer (66), and a top pole (12) formed on the write gap layer (76), where the top pole (12) is substantially flat.A second embodiment (100) is described which is produced by a damascene process.
摘要翻译：具有底极（60）的盘驱动器写入头（10），形成在所述底极（60）上的第一绝缘层（64），形成在所述第一绝缘层（64）上的线圈（38）形成在线圈（38）上的层（66），形成在第二绝缘层（66）上的写间隙层（76）和形成在写间隙层（76）上的顶极（12）（12）基本上是平的。描述了通过镶嵌工艺制造的第二实施例（100）。

29. 发明授权

US09275661B2 Magnetic head having a CPP sensor with tunnel barrier layer and ELG material coplanar with the tunnel barrier layer 有权
标题翻译：磁头具有具有隧道势垒层的CPP传感器和与隧道势垒层共面的ELG材料
公开(公告)号：US09275661B2
公开(公告)日：2016-03-01
申请号：US11703383
申请日：2007-02-06
申请人： Ying Hong , David J. Seagle
发明人： Ying Hong , David J. Seagle
IPC分类号： G11B5/39 , B82Y10/00 , B82Y25/00 , G11B5/31
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G11B5/3166 , G11B5/3169 , G11B5/3903 , Y10T29/49021
摘要： A magnetic head including a CPP read head sensor. The CPP sensor includes a tunnel barrier layer. At least one portion of ELG material is coplanar with the tunnel barrier layer.
摘要翻译：包括CPP读头传感器的磁头。 CPP传感器包括隧道势垒层。 ELG材料的至少一部分与隧道势垒层共面。

30. 发明授权

US08797694B2 Magnetic sensor having hard bias structure for optimized hard bias field and hard bias coercivity 有权
标题翻译：具有硬偏置结构的磁传感器，用于优化硬偏置场和硬偏置矫顽力
公开(公告)号：US08797694B2
公开(公告)日：2014-08-05
申请号：US13335589
申请日：2011-12-22
申请人： Quang Le , David J. Seagle , Guangli Liu , Yongchul Ahn , Simon H. Liao
发明人： Quang Le , David J. Seagle , Guangli Liu , Yongchul Ahn , Simon H. Liao
IPC分类号： G11B5/39
CPC分类号： G11B5/3909 , B82Y10/00 , G11B5/3932 , G11B2005/3996
摘要： A magnetic read sensor having a hard bias structure that extends beyond the back edge of the sensor stack by a controlled, distance that is chosen to maximize both hard bias field and hard bias magnetic coercivity and anisotropy. The hard bias structure has a back edge that is well defined and that has a square corner at its innermost end adjacent to the sensor stack. The magnetic sensor can be constructed by a process that includes a separate making an milling process that is dedicated to defining the back edge of the hard bias structure.
摘要翻译：具有硬偏压结构的磁读取传感器，其通过受控的距离延伸超过传感器堆叠的后边缘，该距离被选择为最大化硬偏置磁场和硬偏磁磁矫顽力和各向异性。硬偏置结构具有良好限定的后边缘，并且在与传感器堆叠相邻的最内端具有正方形角。磁传感器可以通过包括单独制造专用于限定硬偏压结构的后边缘的铣削过程的工艺来构造。

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