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公开(公告)号：US06330122B1
公开(公告)日：2001-12-11
申请号：US09317664
申请日：1999-05-24
IPC分类号： G11B2736
CPC分类号： G11B27/36 , G01R33/1207 , G11B5/012 , G11B5/4886 , G11B20/1816 , G11B2005/001 , G11B2220/20
摘要： The hard disk testing and certifying device of the present invention includes a spin stand to rotate a disk to be tested. A single read/write head, including both a write head and a read head is mounted upon an armature which movably supports the read/write head. The device includes a computerized control system and signal processing system that provides write signals to the write head and receives and processes read head signals from the read head. In the preferred embodiment the read/write head simultaneously provides write signals to the disk and receives read signals from the disk. Preferably, the read/write head functions continually and the certification testing is conducted utilizing a spiral path. In the preferred read/write head the read head is disposed behind the write head and an electromagnetic field shield is disposed between them to reduce electromagnetic field interference between the write head and the read head during simultaneous operation. The read/write head may also include an electromagnetic field interference element to further reduce signal interference at the read head.
摘要翻译： 本发明的硬盘测试和认证装置包括旋转待测试盘的旋转架。 包括写入头和读取头的单个读/写头安装在可移动地支撑读/写头的电枢上。 该装置包括计算机控制系统和信号处理系统，其向写入头提供写入信号，并从读取头接收并处理读取头信号。 在优选实施例中，读/写头同时向盘提供写信号并从盘接收读信号。 优选地，读/写头连续工作，并且使用螺旋路径进行认证测试。 在优选的读/写头中，读头设置在写头后面，电磁场屏蔽设置在它们之间，以在同时操作期间减小写头和读头之间的电磁场干扰。 读/写头还可以包括电磁场干扰元件，以进一步减少读头的信号干扰。
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公开(公告)号：US08826515B2
公开(公告)日：2014-09-09
申请号：US12753620
申请日：2010-04-02
CPC分类号： G11B5/3116 , G11B5/17 , G11B5/313 , G11B5/3136 , G11B5/3163 , G11B5/3967 , H01F41/041 , Y10T29/49039 , Y10T29/49043 , Y10T29/49062 , Y10T29/49064 , Y10T428/1121
摘要： A write head includes a first pole P1, a P1 pedestal, a first back gap layer plated on top of the first pole P1 leaving a region between the P1 pedestal and the first back gap layer for plating a coil. Further, a first insulation layer is applied on top of the P1 pedestal and the first back gap layer and the region between the P1 pedestal and the first back gap layer. The write head further includes a coil, patterned at least partially on top of the P1 pedestal and the first back gap layer and the region between the P1 pedestal and the first back gap layer, copper plated in the coil patterns, and a second insulation layer is applied to fill the spaces in between the coil turns. The resulting structure is planarized via chemical mechanical polishing.
摘要翻译： 写头包括第一极P1，P1基座，电镀在第一极P1的顶部上的第一后隙间隔层，留下P1基座和第一后间隙层之间的区域，用于电镀线圈。 此外，第一绝缘层施加在P1基座和第一后间隙层的顶部以及P1基座和第一后间隙层之间的区域。 写入头还包括线圈，其至少部分地形成在P1基座和第一后部间隙层的顶部上，以及P1基座和第一后部间隙层之间的区域，镀在线圈图案中的铜以及第二绝缘层 应用于填充线圈匝间的空间。 所得结构通过化学机械抛光进行平面化。
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公开(公告)号：US20100187199A1
公开(公告)日：2010-07-29
申请号：US12753620
申请日：2010-04-02
IPC分类号： G11B5/187
CPC分类号： G11B5/3116 , G11B5/17 , G11B5/313 , G11B5/3136 , G11B5/3163 , G11B5/3967 , H01F41/041 , Y10T29/49039 , Y10T29/49043 , Y10T29/49062 , Y10T29/49064 , Y10T428/1121
摘要： In one embodiment of the present invention, a write head includes a first pole P1, a P1 pedestal, a first back gap layer plated on top of the first pole P1 leaving a region between the P1 pedestal and the first back gap layer for plating a coil, a first insulation layer applied on top of the P1 pedestal and the first back gap layer and the region between the P1 pedestal and the first back gap layer. The write head further includes a coil, patterned at least partially on top of the P1 pedestal and the first back gap layer and the region between the P1 pedestal and the first back gap layer, copper plated in the coil patterns, and a second insulation layer applied to fill the spaces in between the coil turns. The resulting structure is planarized via chemical mechanical polishing.
摘要翻译： 在本发明的一个实施例中，写入头包括第一极P1，P1基座，电镀在第一极P1的顶部上的第一后部间隙层，留下P1基座和第一后部间隙层之间的区域，用于电镀 线圈，施加在P1基座上的第一绝缘层和第一后间隙层以及P1基座和第一后间隙层之间的区域。 写入头还包括线圈，其至少部分地形成在P1基座和第一后部间隙层的顶部上，以及P1基座和第一后部间隙层之间的区域，镀在线圈图案中的铜以及第二绝缘层 应用于填充线圈匝间的空间。 所得结构通过化学机械抛光进行平面化。
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14.发明授权公开(公告)号：US06407891B1
公开(公告)日：2002-06-18
申请号：US09317808
申请日：1999-05-24
IPC分类号： G11B539
CPC分类号： G11B5/012 , G11B5/02 , G11B5/17 , G11B5/313 , G11B5/3967 , G11B23/0007
摘要： The present invention is a read/write head for writing information to magnetic media and reading information from magnetic media. It includes a write head for writing information onto magnetic media, a read head for reading information from the magnetic media, and an electrical circuit element that is disposed proximate the read head that functions to generate an electromagnetic field at the read head that is generally oppositely directed to the electromagnetic field generated by the write head. The method for operating the read/write head in a hard disk drive, includes the steps of writing data onto a hard disk, while simultaneously generating an electromagnetic field at the read head that is directed oppositely to the electromagnetic field generated by the write head.
摘要翻译： 本发明是一种用于向磁性介质写入信息并从磁性介质读取信息的读/写头。 它包括用于将信息写入磁性介质的写入头，用于从磁性介质读取信息的读取头，以及设置在读取头附近的电路元件，该电路元件用于在读取头处大致相反地产生电磁场 指向写头产生的电磁场。 用于在硬盘驱动器中操作读/写头的方法包括以下步骤：将数据写入硬盘，同时在读头处产生与写头产生的电磁场相反的电磁场。
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公开(公告)号：US08276257B2
公开(公告)日：2012-10-02
申请号：US10903973
申请日：2004-07-30
CPC分类号： G11B5/3967 , G11B5/3116 , G11B5/3163 , G11B5/3169 , G11B5/3173 , G11B5/3183 , G11B5/3903 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： A method and apparatus for providing a write head having well-defined, precise write head pole tips. A coplanar write head pole tip processing method provides a thin-film magnetic write head pole tip layer and defines first and second pole tips from the pole tip layer. When the pole tips are provided on a write head, a write gap can be defined using ion milling, E-beam lithography, FAB or can be deposited. The write head pole tips can be used in conjunction with read heads by merging a read head with a write head or a read head can be bonded to a write head in a piggybacked fashion.
摘要翻译： 一种用于提供具有明确定义的精确写头磁极尖的写头的方法和装置。 共平面写头磁头尖端处理方法提供薄膜磁头磁极尖端层，并从极尖层确定第一和第二极尖。 当磁头尖端设置在写入头上时，可以使用离子铣削，电子束光刻，FAB或可以沉积写间隙。 写头磁极尖可以通过将读取头与写入头合并而与读取头结合使用，或者读取头可以以背负式的方式结合到写入头。
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公开(公告)号：US07933096B2
公开(公告)日：2011-04-26
申请号：US12005558
申请日：2007-12-26
申请人： Donald G. Allen , Hieu Lam , Terence Tin-Lok Lam , Steve C. Puga
发明人： Donald G. Allen , Hieu Lam , Terence Tin-Lok Lam , Steve C. Puga
IPC分类号： G11B5/33
CPC分类号： G11B5/3153 , G11B5/1278
摘要： Methods and structures for the fabrication of both thin film longitudinal and perpendicular write heads are disclosed. A unique feature of these write heads is the inclusion of layered return poles, which comprise alternating layers of 22/78 and 80/20 NiFe alloys. The alternating layers also vary in thickness, the 22/78 NiFe layers having a nominal thickness of 1500 angstroms and the 80/20 NiFe layers having a nominal thickness of about 75 angstroms. Head efficiency and signal to noise ratios are significantly improved in heads having layered return pole construction.
摘要翻译： 公开了用于制造薄膜纵向和垂直写入头的方法和结构。 这些写头的一个独特之处在于包含层叠的返回极，其包括22/78和80/20 NiFe合金的交替层。 交替层的厚度也变化，22/78 NiFe层的标称厚度为1500埃，而80/20 NiFe层的标称厚度为约75埃。 在具有分层回极结构的头部中，头部效率和信噪比显着提高。
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17.发明申请公开(公告)号：US20080112078A1
公开(公告)日：2008-05-15
申请号：US11598418
申请日：2006-11-13
IPC分类号： G11B5/17
CPC分类号： G11B5/1278 , G11B5/187 , G11B2005/0013 , G11B2005/0032
摘要： A magnetic write head having a magnetic cross yoke arranged to provide a cross magnetic field in a pole tip region of the magnetic head. The cross field, which is perpendicular to the magnetization of write pole, reduces the switching time of the write field, thereby increasing the speed with which the write head can record data. The write head can be a longitudinal write head or a perpendicular write head. In the case of a perpendicular write, the write head can include a write pole arranged to provide a magnetic write field that emits a magnetic field substantially perpendicular with an Air Bearing Surface (ABS). A magnetic cross yoke is formed having ends that are disposed at opposite sides of the pole tip region of the write pole. A magnetic cross field that extends across the pole tip region of the write pole slightly alters the direction of the magnetization of the write pole. If the head is a longitudinal head, it can include first and second magnetic poles separated in the pole tip region by a write gap. The cross yoke can be arranged to produce a cross field that extends across the pole tip region defined by the first and second magnetic poles.
摘要翻译： 一种磁性写头，具有设置成在磁头的磁极尖端区域中提供交叉磁场的磁性十字架。 与写入磁极的磁化方向垂直的交叉场减少写入场的切换时间，从而提高写入头可以记录数据的速度。 写头可以是纵向写头或垂直写头。 在垂直写入的情况下，写入头可以包括写极，该写极被布置成提供发射与空气轴承表面（ABS）基本垂直的磁场的磁写入场。 形成磁性交叉轭，其端部设置在写入极的极尖区域的相对侧。 延伸穿过写入极的极尖区域的磁交叉场稍微改变写入极的磁化方向。 如果头部是纵向头部，则可以包括通过写入间隙在磁极尖端区域中分离的第一和第二磁极。 交叉轭可以被布置成产生跨越由第一和第二磁极限定的极尖区域延伸的交叉场。
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公开(公告)号：US06542331B1
公开(公告)日：2003-04-01
申请号：US09546576
申请日：2000-04-10
IPC分类号： G11B531
CPC分类号： G11B5/313 , G11B5/1272 , G11B5/17 , G11B5/1871 , G11B5/312
摘要： The magnetic head of the present invention includes a P1 pole having an opening formed therethrough, and a P2 pole that is formed over the opening. A second magnetic pole tip is positioned relative to the first magnetic pole such that the first magnetic pole is symmetrically disposed relative to the second magnetic pole tip. Induction coils may be helically wound around portions of the first and/or second magnetic poles, or, alternatively, a planar, spiral induction coil may be fabricated for use with the first and second magnetic poles. An enhanced embodiment includes a first magnetic pole tip piece having a length that defines the throat length of the magnetic head and a thickness that increases the gap at rearward portions of the second magnetic pole tip of the magnetic head.
摘要翻译： 本发明的磁头包括具有穿过其形成的开口的P1极和形成在开口上的P2极。 第二磁极尖端相对于第一磁极定位，使得第一磁极相对于第二磁极尖对称设置。 感应线圈可以螺旋地卷绕在第一和/或第二磁极的一部分周围，或者，可以制造平面的螺旋感应线圈，以与第一和第二磁极一起使用。 增强实施例包括具有限定磁头的喉部长度的长度的第一磁极尖端件和增加磁头的第二磁极端部的后部的间隙的厚度。
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