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1. 发明授权

US07042670B2 Method for adjusting flying height of magnetic heads using an electrical charge through an electrical pad on the slider 有权
标题翻译：用于通过滑块上的电焊盘使用电荷来调节磁头的飞行高度的方法
公开(公告)号：US07042670B2
公开(公告)日：2006-05-09
申请号：US10618145
申请日：2003-07-11
申请人： Zhu Feng , Ellis Cha , David Hu , Yen Fu
发明人： Zhu Feng , Ellis Cha , David Hu , Yen Fu
IPC分类号： G11B5/60
CPC分类号： G11B5/581 , G11B5/6017
摘要： A system and method for adjusting the flying height of a magnetic head above a magnetic storage medium, such as a disk, is disclosed. A charging electrical pad may be coupled to the slider separate from the magnetic head to allow a charging electrical conductor to apply an electrical charge to the slider. By acting as a quasi-parallel capacitor, the amount of spacing in the head-disk interface may be increased or decreased based on the amount of voltage applied. The slider may be electrically isolated from the suspension. A feedback control system may monitor and control the head-disk spacing by measuring temperature or other environmental conditions surrounding the slider and disk.
摘要翻译：公开了一种用于调节诸如磁盘的磁存储介质之上的磁头的飞行高度的系统和方法。充电电焊盘可以耦合到滑块与磁头分离，以允许充电电导体向滑块施加电荷。通过作为准并联电容器，可以基于施加的电压量来增加或减少磁头 - 磁盘接口中的间隔量。滑块可以与悬架电隔离。反馈控制系统可以通过测量滑块和磁盘周围的温度或其他环境条件来监视和控制磁头盘间距。

2. 发明申请

US20050007687A1 Method for adjusting flying height of magnetic heads using an electrical charge through an electrical pad on the slider 有权
标题翻译：用于通过滑块上的电焊盘使用电荷来调节磁头的飞行高度的方法
公开(公告)号：US20050007687A1
公开(公告)日：2005-01-13
申请号：US10618145
申请日：2003-07-11
申请人： Zhu Feng , Ellis Cha , David Hu , Yen Fu
发明人： Zhu Feng , Ellis Cha , David Hu , Yen Fu
IPC分类号： G11B5/58 , G11B5/60 , G11B21/21 , G11B21/02 , G11B27/36
CPC分类号： G11B5/581 , G11B5/6017
摘要： A system and method for adjusting the flying height of a magnetic head above a magnetic storage medium, such as a disk, is disclosed. A charging electrical pad may be coupled to the slider separate from the magnetic head to allow a charging electrical conductor to apply an electrical charge to the slider. By acting as a quasi-parallel capacitor, the amount of spacing in the head-disk interface may be increased or decreased based on the amount of voltage applied. The slider may be electrically isolated from the suspension. A feedback control system may monitor and control the head-disk spacing by measuring temperature or other environmental conditions surrounding the slider and disk.
摘要翻译：公开了一种用于调节诸如磁盘的磁存储介质之上的磁头的飞行高度的系统和方法。充电电焊盘可以耦合到滑块与磁头分离，以允许充电电导体向滑块施加电荷。通过作为准并联电容器，可以基于施加的电压量来增加或减少磁头 - 磁盘接口中的间隔量。滑块可以与悬架电隔离。反馈控制系统可以通过测量滑块和磁盘周围的温度或其他环境条件来监视和控制磁头盘间距。

3. 发明申请

US20050174665A1 Electrical current measurements at head-disk interface 审中-公开
标题翻译：头磁盘接口电流测量
公开(公告)号：US20050174665A1
公开(公告)日：2005-08-11
申请号：US10775658
申请日：2004-02-09
申请人： Xiaofeng Zhang , Zhu Feng , Ellis Cha , Yen Fu
发明人： Xiaofeng Zhang , Zhu Feng , Ellis Cha , Yen Fu
IPC分类号： G11B5/012 , G11B5/02 , G11B5/40
CPC分类号： G11B5/40
摘要： According to an embodiment of the present invention, head/disk contact events are determined through a measurement of current at the head disk interface. For example, an ammeter/voltage source component may be electrically coupled to a magnetic/slider of a disk drive as well as to a spindle coupled to the recording medium. Applied voltage to the slider may result in a lower flying height. Greater measured current by the ammeter could indicate head/disk contact and assist in adjusting applied voltage to obtain a desire flying height.
摘要翻译：根据本发明的实施例，头/盘接触事件通过头磁盘接口处的电流测量来确定。例如，电流表/电压源组件可以电耦合到盘驱动器的磁/滑块以及耦合到记录介质的主轴。对滑块施加的电压可能导致较低的飞行高度。通过电流表测量的电流可以指示头/盘接触，并有助于调整施加的电压以获得期望的飞行高度。

4. 发明申请

US20060056094A1 Method and apparatus for active fly height control with heating and electrical charge 有权
公开(公告)号：US20060056094A1
公开(公告)日：2006-03-16
申请号：US10941420
申请日：2004-09-14
申请人： Yen Fu , Ellis Cha , Zhu Feng
发明人： Yen Fu , Ellis Cha , Zhu Feng
IPC分类号： G11B21/02
CPC分类号： G11B5/6005 , G11B5/6064 , G11B5/607
摘要： A system and method for adjusting the flying height of a magnetic head above a magnetic storage medium, such as a disk, is disclosed. A charging surface of the slider, separate from the read/write head, allows a charging electrical interconnect to apply an electrical charge to the slider. By acting as a quasi-parallel capacitor, the amount of spacing in the head-disk interface may be increased or decreased based on the amount of voltage applied. The slider may be electrically isolated from the suspension. Simultaneously, a heating element deforms the slider to further adjust the spacing between the read/write head and the disk surface. A feedback control system may monitor and control the head-disk spacing by measuring a temperature or other environmental conditions surrounding the slider and disk.

5. 发明授权

US07327535B2 Hybrid coating for magnetic heads 有权
标题翻译：磁头混合涂层
公开(公告)号：US07327535B2
公开(公告)日：2008-02-05
申请号：US10434949
申请日：2003-05-08
申请人： Zhu Feng , Ellis Cha
发明人： Zhu Feng , Ellis Cha
IPC分类号： G11B5/187 , G11B5/60
CPC分类号： B82Y30/00 , G11B5/255 , Y10T428/11
摘要： A system and method for providing corrosion protection for a magnetic read/write head is disclosed. A monolayer surface coating is applied to cover those portions of the under layer of a magnetic read/write head not already covered by a previously applied diamond-like coating. This allows for a thinner diamond like coating than previously applied in the art. The monolayer surface coating can be a self-assembled monolayer, such as an organosilicon for hydroxylated surfaces or carboxylic acids for aluminum or other metal oxides. Alternatively, the monolayer surface coating can be directly applied to the under layer with no diamond-like coating being present. The monolayer surface coating can be applied by a surface immersion process or by a vacuum coating process.
摘要翻译：公开了一种用于为磁读/写头提供防腐蚀的系统和方法。施加单层表面涂层以覆盖未被先前施加的类金刚石涂层覆盖的磁读/写头的下层的那些部分。这允许比本领域中先前应用的更薄的金刚石类涂层。单层表面涂层可以是自组装单层，例如羟基化表面的有机硅或铝或其它金属氧化物的羧酸。或者，单层表面涂层可以直接施加到底层，而不存在类金刚石涂层。单层表面涂层可以通过表面浸渍法或真空镀膜法施加。

6. 发明申请

US20060176596A1 Measuring and neutralizing the electrical charge at the interface of a magnetic head and media 有权
标题翻译：测量和中和磁头和介质的界面处的电荷
公开(公告)号：US20060176596A1
公开(公告)日：2006-08-10
申请号：US11399284
申请日：2006-04-06
申请人： Zhu Feng , Ellis Cha , Xiaofeng Zhang
发明人： Zhu Feng , Ellis Cha , Xiaofeng Zhang
IPC分类号： G11B27/36
CPC分类号： G11B5/60
摘要： A system and method for measuring and neutralizing the electrical charge at the interface of a magnetic head and a magnetic storage medium, such as a disk, is disclosed. A surface treatment material is applied to the magnetic head. The surface treatment material matches the medium surface material on the surface of the magnetic storage medium. The surface treatment material on the magnetic read/write head may be a fluorinated carbon, such as a Fomblin Z-derivative, perfluoro alkyl trichlorosilane, a FC-722, or a fluorinated polymer. The surface treatment material can be applied to the magnetic head by a vapor deposition process or by a liquid immersion process. The charge on the head-disk interface can be measured by applying varying external charges to the head while reading a signal previously written to the disk.
摘要翻译：公开了一种用于测量和中和磁头和诸如磁盘的磁存储介质的界面处的电荷的系统和方法。将表面处理材料施加到磁头。表面处理材料与磁性存储介质表面上的介质表面材料相匹配。磁读写头上的表面处理材料可以是氟化碳，如Fomblin Z衍生物，全氟烷基三氯硅烷，FC-722或氟化聚合物。表面处理材料可以通过气相沉积法或液浸法施加到磁头上。头磁盘接口上的电荷可以通过在读取先前写入磁盘的信号时向磁头施加变化的外部电荷来测量。

7. 发明授权

US08184405B1 Air-bearing slider design for sub-nanometer clearance in hard disk drive (HDD) 有权
标题翻译：空心滑块设计用于硬盘驱动器（HDD）中的亚纳米间隙
公开(公告)号：US08184405B1
公开(公告)日：2012-05-22
申请号：US12930753
申请日：2011-01-14
申请人： Guoqiang Zheng , Ellis Cha , Zhu Feng , Sindy Yeung
发明人： Guoqiang Zheng , Ellis Cha , Zhu Feng , Sindy Yeung
IPC分类号： G11B5/55
CPC分类号： G11B5/6082 , G11B5/102
摘要： A slider is formed by a three-step ion milling process with an ABS topography that provides aerodynamic stability at sub-nanometer flying heights. The ABS design significantly eliminates the accumulation of lubricant and removes whatever lubricant does accumulate by use of a shallow dam at the trailing edge. In addition, a junction between a down-track channel and a cross-track channel directs airflow towards a center pad in which a transducer is embedded so that the pressure at the pad is enhanced even under high altitude conditions. The slider ABS is divided into two portions by a transverse deep air channel, but the channel is bridged by the cross-track channel which crosses the deep air channel with sides of unequal height. This dual height bridge allows variations in skew angle to be compensated so that pressure variations across the disk tracks are significantly reduced.
摘要翻译：滑块通过具有ABS形貌的三步离子研磨工艺形成，其在亚纳米飞行高度处提供空气动力学稳定性。 ABS设计显着地消除了润滑剂的积聚，并且通过在后缘使用浅水坝去除了积聚的任何润滑剂。此外，下轨道和跨轨道之间的接合处将气流引向中心衬垫，在中心衬垫中嵌入换能器，使得即使在高海拔条件下，衬垫处的压力也得到提高。滑块ABS通过横向深空气通道分成两部分，但是通道由跨越高空气通道的横向通道桥接，其侧面不等高。这种双高度桥允许补偿偏斜角的变化，使得磁盘轨道上的压力变化显着减小。

8. 发明授权

US07969685B2 ABS design for dynamic flying height (DFH) applications 有权
标题翻译： ABS设计用于动态飞行高度（DFH）应用
公开(公告)号：US07969685B2
公开(公告)日：2011-06-28
申请号：US12228496
申请日：2008-08-13
申请人： Xinjiang Shen , Zhu Feng , Ellis Cha , Robert Chu
发明人： Xinjiang Shen , Zhu Feng , Ellis Cha , Robert Chu
IPC分类号： G11B5/147
CPC分类号： G11B5/6005
摘要： A DFH (Dynamic Flying Height) type slider ABS design has a stable flying height and a DFH efficiency that is uniform across the entire disk surface. These properties are a result of embedding the read/write head and heater in a trapezoidally bridged micro-pad having a very small surface area. The micro-pad is surrounded by a wing-like structure that projects from a central rail in the ABS and the micro pad is connected to an inner edge of that structure by a bridge having a trapezoidal shape. The trapezoidal shape responds effectively to variations in air flow direction and pressure point as the slider moves across the disk surface and, as a result, provides the uniform DFH efficiency. At the same time, the projecting wings and adjacent topology help to direct the airflow around the micro-pad and provide the stable flying height.
摘要翻译： DFH（动态飞行高度）型滑块ABS设计具有稳定的飞行高度和整个磁盘表面均匀的DFH效率。这些性质是将读/写头和加热器嵌入具有非常小的表面积的梯形桥接微垫中的结果。微垫被由ABS中的中心轨道突出的翼状结构围绕，并且微型垫通过具有梯形形状的桥连接到该结构的内边缘。当滑块越过盘表面时，梯形形状有效地响应于空气流动方向和压力点的变化，结果提供了均匀的DFH效率。同时，突出的机翼和相邻的拓扑结构有助于引导微型焊盘周围的气流，并提供稳定的飞行高度。

9. 发明授权

US07675711B2 Measuring and neutralizing the electrical charge at the interface of a magnetic head and media 有权
标题翻译：测量和中和磁头和介质的界面处的电荷
公开(公告)号：US07675711B2
公开(公告)日：2010-03-09
申请号：US10434258
申请日：2003-05-07
申请人： Zhu Feng , Ellis Cha , Xiaofeng Zhang
发明人： Zhu Feng , Ellis Cha , Xiaofeng Zhang
IPC分类号： G11B5/60 , G11B5/82
CPC分类号： G11B5/60
摘要： A system and method for measuring and neutralizing the electrical charge at the interface of a magnetic head and a magnetic storage medium, such as a disk, is disclosed. A surface treatment material is applied to the magnetic head. The surface treatment material matches the medium surface material on the surface of the magnetic storage medium. The surface treatment material on the magnetic read/write head may be a fluorinated carbon, such as a Fomblin Z-derivative, perfluoro alkyl trichlorosilane, a FC-722, or a fluorinated polymer. The surface treatment material can be applied to the magnetic head by a vapor deposition process or by a liquid immersion process. The charge on the head-disk interface can be measured by applying varying external charges to the head while reading a signal previously written to the disk.
摘要翻译：公开了一种用于测量和中和磁头和诸如磁盘的磁存储介质的界面处的电荷的系统和方法。将表面处理材料施加到磁头。表面处理材料与磁性存储介质表面上的介质表面材料相匹配。磁读写头上的表面处理材料可以是氟化碳，如Fomblin Z衍生物，全氟烷基三氯硅烷，FC-722或氟化聚合物。表面处理材料可以通过气相沉积法或液浸法施加到磁头上。头磁盘接口上的电荷可以通过在读取先前写入磁盘的信号时向磁头施加变化的外部电荷来测量。

10. 发明申请

US20100039732A1 ABS design for dynamic flying height (DFH) applications 有权
标题翻译： ABS设计用于动态飞行高度（DFH）应用
公开(公告)号：US20100039732A1
公开(公告)日：2010-02-18
申请号：US12228496
申请日：2008-08-13
申请人： Xinjiang Shen , Zhu Feng , Ellis Cha , Robert Chu
发明人： Xinjiang Shen , Zhu Feng , Ellis Cha , Robert Chu
IPC分类号： G11B5/60
CPC分类号： G11B5/6005
摘要： A DFH (Dynamic Flying Height) type slider ABS design has a stable flying height and a DFH efficiency that is uniform across the entire disk surface. These properties are a result of embedding the read/write head and heater in a trapezoidally bridged micro-pad having a very small surface area. The micro-pad is surrounded by a wing-like structure that projects from a central rail in the ABS and the micro pad is connected to an inner edge of that structure by a bridge having a trapezoidal shape. The trapezoidal shape responds effectively to variations in air flow direction and pressure point as the slider moves across the disk surface and, as a result, provides the uniform DFH efficiency. At the same time, the projecting wings and adjacent topology help to direct the airflow around the micro-pad and provide the stable flying height.
摘要翻译： DFH（动态飞行高度）型滑块ABS设计具有稳定的飞行高度和整个磁盘表面均匀的DFH效率。这些性质是将读/写头和加热器嵌入具有非常小的表面积的梯形桥接微垫中的结果。微垫被由ABS中的中心轨道突出的翼状结构包围，并且微垫通过具有梯形形状的桥连接到该结构的内边缘。当滑块越过盘表面时，梯形形状有效地响应于空气流动方向和压力点的变化，结果提供了均匀的DFH效率。同时，突出的机翼和相邻的拓扑结构有助于引导微型焊盘周围的气流，并提供稳定的飞行高度。

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