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1.发明授权Method of making a thin film head with contoured pole face edges for undershoot reduction 失效制造具有成型极面边缘以用于下冲还原的薄膜头的方法
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
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。
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公开(公告)号：US5406434A
公开(公告)日：1995-04-11
申请号：US263009
申请日：1994-06-20
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
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; etch of the sacrificial layer which lifts-off overlying partial lapping or chemical etch followed by chemical 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; 牺牲层的蚀刻，其覆盖部分研磨或化学蚀刻，然后是化学Al 2 O 3; 沉积光致抗蚀剂坝并进行化学蚀刻，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。
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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
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。
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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
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。
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公开(公告)号：US5181152A
公开(公告)日：1993-01-19
申请号：US660410
申请日：1991-02-22
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
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。
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公开(公告)号：US5198948A
公开(公告)日：1993-03-30
申请号：US622558
申请日：1990-12-05
CPC分类号： G11B5/3143 , G11B5/4886
摘要： A servo head in a disk file data storage system includes at least one shield which acts to block radiation emanating from a nearby data head and thus reduce noise induced in the servo head. The shield is located on either side of an essentially flat conducting coil in a servo transducer, or a data transducer or both. The shield may be either a single layer of material or multiple layers.
摘要翻译： 磁盘文件数据存储系统中的伺服磁头包括至少一个屏蔽件，其用于阻止从附近的数据磁头发出的辐射，从而减少伺服磁头引起的噪声。 屏蔽位于伺服换能器中的基本平坦的导电线圈的两侧，或数据换能器或两者之间。 屏蔽可以是单层材料或多层。
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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
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。
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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。
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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
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。
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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
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。
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