公开(公告)号：US4523238A

公开(公告)日：1985-06-11

申请号：US466400

申请日：1983-02-15

申请人： Beat G. Keel ,  Robert W. Johnson

发明人： Beat G. Keel ,  Robert W. Johnson

IPC分类号： G11B5/09 ,  G11B5/02

CPC分类号： G11B5/02

摘要： This amplifier circuit for a magnetic transducer such as a magnetic head includes a pair of transistors which function both as write current modulators and read signal preamplifiers. The transistors are suitable for in situ deposition on a magnetic transducer carrier adjacent the winding, which keeps the signal lines of the data read by the transducer very short until amplification.

摘要翻译： 用于诸如磁头的磁换能器的放大器电路包括一对同时用作写电流调制器和读信号前置放大器的晶体管。 晶体管适合于在绕组上的磁性传感器载体上的原位沉积，这使得传感器读取的数据的信号线保持非常短直到放大。

公开(公告)号：US5566038A

公开(公告)日：1996-10-15

申请号：US430310

申请日：1995-04-28

申请人： Beat G. Keel ,  Brian G. Ehalt ,  Raymond W. Knight

发明人： Beat G. Keel ,  Brian G. Ehalt ,  Raymond W. Knight

IPC分类号： G11B5/11 ,  G11B5/31 ,  G11B5/40 ,  G11B5/60

CPC分类号： G11B5/3103 ,  G11B5/11 ,  G11B5/3106 ,  G11B5/3143 ,  G11B5/40

摘要： A thin film transducer having electrical connections for the discharge of electrostatic charges between coil and core is disclosed. The invention provides for conductive surfaces electrically connected to the coil and core, respectively. These surfaces are selectively positioned so as to define an air gap having a breakdown voltage below that of the insulation layer separating coil and core in the transducer.

摘要翻译： 公开了一种具有用于在线圈和芯之间排出静电电荷的电连接的薄膜换能器。 本发明提供了分别电连接到线圈和芯的导电表面。 这些表面被选择性地定位成限定了具有低于换能器中绝缘层分离线圈和芯的击穿电压的气隙。

公开(公告)号：US5373624A

公开(公告)日：1994-12-20

申请号：US960791

申请日：1992-10-14

申请人： Ying D. Yan ,  John Bortins ,  Beat G. Keel ,  Nurul Amin

发明人： Ying D. Yan ,  John Bortins ,  Beat G. Keel ,  Nurul Amin

IPC分类号： G11B5/31 ,  G11B5/42

CPC分类号： G11B5/3143 ,  Y10T29/49032

摘要： A thin film magnetic read/write head deposited upon a non-magnetic substrate reduces leading edge undershoots in readback pulse signal. A magnetic layer is deposited between the thin film magnetic read/write head and the non-magnetic substrate. Undershoots are reduced by making the leading edge of the thin film head less sensitive to the magnetization transitions in a magnetic storage medium.

摘要翻译： 沉积在非磁性衬底上的薄膜磁读/写头减少了回读脉冲信号中的前沿下冲。 磁性层沉积在薄膜磁读/写头和非磁性基片之间。 通过使薄膜头的前缘对磁存储介质中的磁化转变较不敏感来减少下冲。

公开(公告)号：US5084957A

公开(公告)日：1992-02-04

申请号：US609921

申请日：1990-11-06

申请人： Nurul Amin ,  John Bortins ,  Beat G. Keel ,  Ying D. Yan

发明人： Nurul Amin ,  John Bortins ,  Beat G. Keel ,  Ying D. Yan

IPC分类号： G11B5/127 ,  G11B5/31

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3163 ,  Y10T29/49044 ,  Y10T29/49064

摘要： A thin film magnetic read/write head is manufactured using Al.sub.2 O.sub.3 dams. The Al.sub.2 O.sub.3 dams are formed using a sacrificial layer which is deposited upon a bottom pole layer. An Al.sub.2 O.sub.3 layer is deposited over the sacrificial layer. When the sacrificial layer is removed, the Al.sub.2 O.sub.3 layer forms dams between which a top pole piece is deposited. The sacrificial layer is removed using lapping and a selected chemical etch; partial lapping or chemical etch followed by chemical etch of the sacrificial layer which lifts-off overlying Al.sub.2 O.sub.3 ; depositing photoresist dams and chemically etching the encapsulation layer and the sacrificial layer; or removal through physical or thermal shock of the Al.sub.2 O.sub.3 layer sputtered at zero bias followed by a selective chemical etch of the sacrificial layer.

摘要翻译： 使用Al2O3坝制造薄膜磁读/写头。 使用沉积在底极层上的牺牲层来形成Al 2 O 3坝。 在牺牲层上沉积Al 2 O 3层。 当牺牲层被去除时，Al 2 O 3层形成在其上沉积顶极片之间的堤坝。 使用研磨和选择的化学蚀刻去除牺牲层; 部分研磨或化学蚀刻，然后是上覆Al2O3的牺牲层的化学蚀刻; 沉积光刻胶坝并化学蚀刻封装层和牺牲层; 或通过在零偏压下溅射的Al 2 O 3层的物理或热冲击进行去除，随后对牺牲层进行选择性化学蚀刻。

公开(公告)号：US5816890A

公开(公告)日：1998-10-06

申请号：US793718

申请日：1997-03-03

申请人： Shanlin X. Hao ,  Lance E. Stover ,  Beat G. Keel

发明人： Shanlin X. Hao ,  Lance E. Stover ,  Beat G. Keel

IPC分类号： B23Q15/02 ,  B24B37/00 ,  B24B37/04 ,  B24B41/06 ,  B24B49/02 ,  B24B49/10 ,  G11B5/10 ,  G11B5/127 ,  G11B5/187 ,  G11B5/23 ,  G11B5/31 ,  G11B5/39

CPC分类号： B24B37/00 ,  B23Q15/02 ,  B24B37/048 ,  B24B41/06 ,  B24B49/02 ,  B24B49/10 ,  G11B5/102 ,  G11B5/3106 ,  G11B5/3116 ,  G11B5/3169 ,  G11B5/3903 ,  G11B5/1871 ,  G11B5/232 ,  G11B5/313 ,  G11B5/3166 ,  Y10T29/49037

摘要： An electrical lap guide (ELG) system and method are disclosed for use in lapping a bar 10 of magnetic transducer carrying sliders to a desired transducer height. A first ELG ELG1 contained within the bar has at least two first ELG resistive elements R.sub.11 and R.sub.12. A second ELG ELG 2 contained within the bar has at least two second ELG resistive elements R.sub.21 and R.sub.23. A first of the at least two first ELG resistive elements is electrically coupled to a first of the at least two second ELG resistive elements to thereby reduce a total number of leads needed between a data acquisition unit 100 and the bar 10 during lapping. The reduction in required data acquisition unit 100 leads allow more ELGs to be included on each bar 10 in order to more accurately control the lapping process.

摘要翻译： PCT No.PCT / US97 / 01324 Sec。 371日期1997年3月3日 102（e）1997年3月3日PCT 1997年1月30日PCT PCT。 公开号WO98 / 18596 日期1998年5月7日公开了一种用于将带有滑动件的磁性换能器的杆10研磨到期望的换能器高度的电动牵引导轨（ELG）系统和方法。 包含在棒内的第一ELG ELG1具有至少两个第一ELG电阻元件R11和R12。 包含在棒内的第二ELG ELG 2具有至少两个第二ELG电阻元件R21和R23。 所述至少两个第一ELG电阻元件中的第一个电耦合到所述至少两个第二ELG电阻元件中的第一ELG电阻元件，从而在研磨期间减少数据采集单元100和条10之间所需的导线总数。 所需数据获取单元100引线的减少允许在每个条10上包括更多的ELG，以便更准确地控制研磨过程。

公开(公告)号：US5774975A

公开(公告)日：1998-07-07

申请号：US749994

申请日：1996-11-15

申请人： Kent N. Maffitt ,  Beat G. Keel

发明人： Kent N. Maffitt ,  Beat G. Keel

IPC分类号： G11B5/31 ,  G11B5/48 ,  G11B5/60

CPC分类号： G11B5/6005 ,  G11B5/3106 ,  G11B5/4826 ,  G11B5/4853 ,  Y10T29/49041 ,  Y10T29/49064

摘要： A thin film magnetic head includes a slider having a first air bearing surface and a second surface made of a layer of an insulating material. The second surface has a first aperture formed in the insulating layer to expose a portion of the slider below the second surface layer. A reading/writing transducer is provided in the slider adjacent to the air bearing surface and has a first connecting link extending within the slider so that an end of the first link is exposed within the first aperture of the second surface layer. A first bond pad extends on the second surface of the slider and within the first aperture of the second surface layer. The first bond pad is electrically connected to the exposed end of the first link of the read/write transducer within the first aperture of the second surface layer.

摘要翻译： 薄膜磁头包括具有第一空气轴承表面和由绝缘材料层制成的第二表面的滑块。 第二表面具有形成在绝缘层中的第一孔，以将滑块的一部分暴露在第二表面层下方。 读取/写入传感器设置在与空气支承表面相邻的滑块中，并且具有在滑块内延伸的第一连接连杆，使得第一连杆的端部暴露在第二表面层的第一孔内。 第一接合焊盘在滑块的第二表面和第二表面层的第一孔内延伸。 第一接合焊盘电连接到第二表面层的第一孔内的读/写换能器的第一链节的暴露端。

公开(公告)号：US5137750A

公开(公告)日：1992-08-11

申请号：US702956

申请日：1991-05-20

申请人： Nurul Amin ,  John Bortins ,  Ying D. Yan ,  Beat G. Keel ,  Nathan Curland ,  Tim Madsen

发明人： Nurul Amin ,  John Bortins ,  Ying D. Yan ,  Beat G. Keel ,  Nathan Curland ,  Tim Madsen

IPC分类号： G11B5/127 ,  G11B5/31

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3163 ,  Y10T29/49044

摘要： A thin film magnetic read/write head is manufactured using Al.sub.2 O.sub.3 dams. The Al.sub.2 O.sub.3 dams are formed using a sacrificial layer which is deposited upon a bottom pole layer. An Al.sub.2 O.sub.3 layer is deposited over the sacrificial layer. When the sacrificial layer is removed, the Al.sub.2 O.sub.3 layer forms dams between which a top pole piece is deposited. The sacrificial layer is removed using lapping and a selected chemical etch; partial lapping or chemical etch followed by chemical etch of the sacrificial layer which lifts-off overlying Al.sub.2 O.sub.3 ; depositing photoresist dams and chemically etching the encapsulation layer and the sacrificial layer; or removal through physical or thermal shock of the Al.sub.2 O.sub.3 layer sputtered at zero bias followed by a selective chemical etch of the sacrificial layer. The thin film magnetic head of the present invention has pole tips which provide an outside pole face contour that is significantly different from a pole tip contour along a gap region. This reduces an undershoot effect in readback pulses in a readback signal. The altered contour can be used on both top and bottom pole tips to eliminate both leading and trailing undershoots. Additionally, in shielded probe heads for vertical recording a gap region contour can be altered to achieve a similar reduction in leading undershoot.

摘要翻译： 使用Al2O3坝制造薄膜磁读/写头。 使用沉积在底极层上的牺牲层来形成Al 2 O 3坝。 在牺牲层上沉积Al 2 O 3层。 当牺牲层被去除时，Al 2 O 3层形成在其上沉积顶极片之间的堤坝。 使用研磨和选择的化学蚀刻去除牺牲层; 部分研磨或化学蚀刻，然后是上覆Al2O3的牺牲层的化学蚀刻; 沉积光刻胶坝并化学蚀刻封装层和牺牲层; 或通过在零偏压下溅射的Al 2 O 3层的物理或热冲击进行去除，随后对牺牲层进行选择性化学蚀刻。 本发明的薄膜磁头具有极尖，其提供与极尖轮廓沿间隙区域显着不同的外极面轮廓。 这可以减少回读信号中的回读脉冲中的下冲作用。 改变的轮廓可以在顶部和底部极尖上使用，以消除前方和后方的下冲。 另外，在用于垂直记录的屏蔽探头中，可以改变间隙区域轮廓以实现引导下冲的类似的减小。

公开(公告)号：US4477968A

公开(公告)日：1984-10-23

申请号：US430193

申请日：1982-09-30

申请人： Alan G. Kracke ,  Tuan P. Tran ,  Beat G. Keel

发明人： Alan G. Kracke ,  Tuan P. Tran ,  Beat G. Keel

IPC分类号： B23Q17/20 ,  G01B7/06 ,  G11B5/31 ,  G11B5/42

CPC分类号： G01B7/06 ,  B23Q17/20 ,  G11B5/3166 ,  Y10T29/49004 ,  Y10T29/49037 ,  Y10T29/49046

摘要： A method for use with an article of manufacture allows great accuracy in machining the edge of a face on a prism to a predetermined position respective a feature carried on the face and formed by deposition of insulating material. The preferred application for this invention is in accurately machining the transducing surface of a disk memory transducer assembly so that the throat height of the thin-film head carried on an end face of the assembly has a precise value.

摘要翻译： 用于制造制品的方法允许将棱镜上的面的边缘加工到相应于表面上承载的特征并通过沉积绝缘材料而形成的预定位置的高精度。 本发明的优选应用是精确地加工盘存储换能器组件的换能表面，使得承载在组件的端面上的薄膜头的喉部高度具有精确的值。

公开(公告)号：US6047224A

公开(公告)日：2000-04-04

申请号：US31959

申请日：1998-02-26

申请人： Lance E. Stover ,  Beat G. Keel ,  Shanlin X. Hao

发明人： Lance E. Stover ,  Beat G. Keel ,  Shanlin X. Hao

IPC分类号： B24B37/04 ,  B24B49/10 ,  G11B5/187 ,  G11B5/31 ,  G11B5/127 ,  G11B5/39

CPC分类号： G11B5/3116 ,  B24B37/04 ,  B24B49/10 ,  G11B5/1871 ,  G11B5/314 ,  G11B5/3166

摘要： An electrical lap guide (ELG) and a method of using the same to control the machining of a surface of a magnetic transducer to obtain a desired transducer height are disclosed. The transducer and ELG are fabricated in a deposition of layers on a substrate. The ELG includes a first resistor aligned with the transducer such that a machined height of the first resistor is indicative of a machined height of the transducer. Resistances of second and third resistors of the ELG are measured. A sheet resistance of the deposition of layers and a quantity of wafer processing edge movement are determined as functions of the measured resistances of the second and third resistors. An expected non-machined resistance of the first resistor is determined as a function of the determined sheet resistance and as a function of the determined quantity of edge movement. A non-machined resistance of the first resistor is measured. The expected non-machined resistance of the first resistor is compared to the measured non-machined resistance of the first resistor to determine an amount of error.

摘要翻译： 公开了一种电动牵引导轨（ELG）及其使用方法来控制磁换能器表面的加工以获得期望的换能器高度。 换能器和ELG在衬底上沉积层中制造。 ELG包括与换能器对准的第一电阻器，使得第一电阻器的加工高度指示换能器的加工高度。 测量ELG的第二和第三电阻器的电阻。 确定层的沉积的薄层电阻和晶片处理边缘移动的量作为测量的第二和第三电阻器的电阻的函数。 第一电阻器的预期未加工电阻被确定为所确定的薄层电阻的函数，并且作为所确定的边缘移动量的函数。 测量第一电阻器的非加工电阻。 将第一电阻器的预期非加工电阻与第一电阻器的测量的未加工电阻进行比较，以确定误差量。

公开(公告)号：US5872311A

公开(公告)日：1999-02-16

申请号：US839992

申请日：1997-04-24

申请人： Mark J. Schaenzer ,  Beat G. Keel ,  Zine-Eddine Boutaghou ,  Subrahmanyan Nagarajan

发明人： Mark J. Schaenzer ,  Beat G. Keel ,  Zine-Eddine Boutaghou ,  Subrahmanyan Nagarajan

IPC分类号： G01B7/34 ,  G11B5/012 ,  G11B5/10 ,  G11B5/48 ,  G11B5/55 ,  G11B5/58 ,  G11B5/60 ,  G11B19/04 ,  G11B27/34 ,  G11B33/10 ,  G01B21/30

CPC分类号： G01B7/345 ,  G11B19/04 ,  G11B5/10 ,  G11B5/58 ,  G11B27/34 ,  G11B33/10 ,  G11B5/012 ,  G11B5/4886 ,  G11B5/5534 ,  G11B5/6011

摘要： A device for testing smoothness of a rotatable disc is disclosed. A slider body has a trailing edge surface and an air-bearing surface for gliding over a surface of the disc when the disc is rotating. A piezoelectric sensor is formed in the slider body, and a thermal asperity sensor is formed in the slider body and at least partially exposed to the air-bearing surface. A plurality of conductive vias extend from the trailing edge surface of the slider body into the slider body to contact the piezoelectric and thermal asperity sensors. A plurality of conductive bond pads are disposed on the trailing edge surface in contact with respective conductive vias.

摘要翻译： 公开了一种用于测试可旋转盘的平滑度的装置。 滑块体具有后缘表面和用于在盘旋转时在盘的表面上滑动的空气轴承表面。 压电传感器形成在滑块体中，并且热敏凹凸传感器形成在滑块体中并且至少部分地暴露于空气轴承表面。 多个导电通孔从滑块体的后缘表面延伸到滑块体中以接触压电和热凹凸传感器。 多个导电接合焊盘设置在与相应的导电通孔接触的后缘表面上。