公开(公告)号：US08045295B2

公开(公告)日：2011-10-25

申请号：US12145464

申请日：2008-06-24

Applicant: Yen Fu ,  Ellis T. Cha ,  Po-Kang Wang ,  Hong Tian ,  Manuel Hernandez ,  Yaw-Shing Tang ,  Ben Hu

Inventor： Yen Fu ,  Ellis T. Cha ,  Po-Kang Wang ,  Hong Tian ,  Manuel Hernandez ,  Yaw-Shing Tang ,  Ben Hu

IPC: G11B5/55

CPC classification number: H05K3/3442 ,  B24B37/00 ,  B24D18/00 ,  G11B5/4853 ,  H05K1/0215 ,  H05K2201/10727 ,  Y02P70/613

Abstract: Method and apparatus are presented for electrically coupling a slider to ground. In one embodiment, a bonding pad is provided on a side of the slider body separate from the bonding pad(s) used for read/write signals. This separate bonding pad is electrically coupled within the slider body to components that are to be coupled to ground. A separate conductor provided on the suspension (e.g., a trace, a flex circuit, etc.) may be electrically coupled to the separate bonding pad via gold ball bonding. The conductor is also coupled to ground in the hard-disk drive device (e.g., via the preamplifier). The use of the separated bonding pad and trace may negate the need to use a conductive adhesive to electrically ground the slider via its attachment to the tongue of a slider.

Abstract translation: 呈现用于将滑块电耦合到地面的方法和装置。 在一个实施例中，接合焊盘设置在与用于读/写信号的接合焊盘分开的滑块体的一侧上。 该单独的接合焊盘在滑块体内电耦合到要耦合到地面的部件。 设置在悬架上的单独的导体（例如，迹线，柔性电路等）可以通过金球接合电耦合到单独的接合焊盘。 导体也耦合到硬盘驱动装置中的接地（例如，经由前置放大器）。 使用分离的接合焊盘和迹线可能会使得不需要使用导电粘合剂来将滑块经由其附接件电连接到滑块的舌部。

公开(公告)号：US08018682B2

公开(公告)日：2011-09-13

申请号：US12804946

申请日：2010-08-02

Applicant: Shide Cheng ,  Zhu Feng ,  Ellis T. Cha

Inventor： Shide Cheng ,  Zhu Feng ,  Ellis T. Cha

IPC: G11B5/82

CPC classification number: G11B5/3106 ,  C23C14/024 ,  C23C14/0605 ,  C23C14/0676 ,  G11B5/3163 ,  G11B5/72 ,  G11B5/8408 ,  G11B23/0064 ,  Y10T29/49043 ,  Y10T428/1164

Abstract: A magnetic disk is protected by a bilayer. The bilayer is formed as an adhesion enhancing underlayer and a protective diamond-like carbon (DLC) overlayer. The underlayer is formed of an aluminum or alloyed aluminum oxynitride, having the general formula AlOxNy or MezAlOxNy where Mez symbolizes Tiz, Siz or Crz and where x, y and z can be varied within the formation process. By adjusting the values of x and y the adhesion underlayer contributes to such qualities of the protective bilayer as stress compensation, chemical and mechanical stability and low electrical conductivity. Various methods of forming the underlayer are provided, including reactive ion sputtering, plasma assisted chemical vapor deposition, pulsed laser deposition and plasma immersion ion implantation.

Abstract translation: 磁盘由双层保护。 双层形成为粘合增强底层和保护性金刚石碳（DLC）覆盖层。 底层由具有通式AlOxNy或MezAlOxNy的铝或合金化氧化铝铝形成，其中Mez表示Tiz，Siz或Crz，其中x，y和z可以在形成过程中变化。 通过调整x和y的值，粘合剂底层有助于保护层的质量，如应力补偿，化学和机械稳定性以及低导电性。 提供了形成底层的各种方法，包括反应离子溅射，等离子体辅助化学气相沉积，脉冲激光沉积和等离子体浸入离子注入。

公开(公告)号：US07885040B2

公开(公告)日：2011-02-08

申请号：US11774512

申请日：2007-07-06

Applicant: Chao-Hui Yang ,  Qinghua Zeng ,  Yen Fu ,  Ellis T. Cha

Inventor： Chao-Hui Yang ,  Qinghua Zeng ,  Yen Fu ,  Ellis T. Cha

IPC: G11B5/55

CPC classification number: G11B5/4826

Abstract: An apparatus with a head gimbal assembly designed to reduce movement and rotation of components of the head gimbal assembly structure is disclosed. One embodiment head gimbal assembly may comprise a flexure including a ramp limiter, a suspension assembly further comprising a suspension tongue, a slider further comprising a magnetic head; and a load beam further comprising a lift tab; and a ramp further comprising a step to engage and support the ramp limiter and support and constrain the movement of the slider. In certain embodiments, the flexure may further comprise a flexure rail located at its end to reduce movement and rotation of the suspension tongue.

Abstract translation: 公开了一种具有头部万向节组件的装置，其被设计成减小头部万向节组件结构的部件的移动和旋转。 一个实施例的头万向架组件可以包括包括斜坡限制器的挠曲件，还包括悬挂舌的悬架组件，还包括磁头的滑块; 以及进一步包括升降翼的负载梁; 以及斜坡，还包括接合和支撑斜坡限制器并支撑和限制滑动件运动的步骤。 在某些实施例中，挠曲件还可以包括位于其端部处的挠性轨道，以减少悬挂舌片的运动和旋转。

公开(公告)号：US07617737B2

公开(公告)日：2009-11-17

申请号：US11644309

申请日：2006-12-21

Applicant: Li-Yan Zhu ,  Chao-Hui Yang ,  Yen Fu ,  Ellis T. Cha

Inventor： Li-Yan Zhu ,  Chao-Hui Yang ,  Yen Fu ,  Ellis T. Cha

IPC: G01L1/24

CPC classification number: G11B5/4826 ,  G11B5/455 ,  G11B5/6011

Abstract: In a system and method for adjusting a static torque on a slider in a head-gimbal assembly, a substantially rigid mass is placed on an air-bearing surface (ABS) of a slider. A static attitude of the slider is measured, and an adjustment location and intensity for a flexure to yield a zero slider static attitude are calculated. The flexure is adjusted based on the measurement and calculations.

Abstract translation: 在用于调节头部万向节组件中的滑块上的静态扭矩的系统和方法中，基本上刚性的质量被放置在滑块的空气轴承表面（ABS）上。 测量滑块的静态姿势，并且计算弯曲的调整位置和强度以产生零滑块静态姿态。 基于测量和计算来调整挠曲。

公开(公告)号：US20080239577A1

公开(公告)日：2008-10-02

申请号：US11691437

申请日：2007-03-26

Applicant: Qinghua ZENG ,  Yen FU ,  Li-Yan ZHU ,  Chao-Hui YANG ,  Ellis T. CHA

Inventor： Qinghua ZENG ,  Yen FU ,  Li-Yan ZHU ,  Chao-Hui YANG ,  Ellis T. CHA

IPC: G11B5/48

CPC classification number: G11B5/4826 ,  Y10T29/49826

Abstract: In a balanced head gimbal assembly for improved seeking performance, a slider having a magnetic head with a set of read elements to read data and a set of write elements to write data, an air-bearing surface, and a non-air-bearing surface is coupled to a suspension. The suspension includes a loadbeam, a flexure, and a balancing weight. The loadbeam is coupled to an actuator arm. The flexure, coupled to the loadbeam, has a window through which a dimple, coupled to the loadbeam, contacts a dimple contact point. The balancing weight, coupled to the flexure, has a configuration which permits alignment of a center of mass of the head gimbal assembly with the dimple contact point.

Abstract translation: 在用于改善寻求性能的平衡头万向架组件中，具有磁头的滑块具有一组用于读取数据的读取元件和一组写入元件以写入数据，空气轴承表面和非空气轴承表面 耦合到悬架。 悬架包括载重梁，挠性件和平衡重物。 负载梁耦合到致动器臂。 耦合到负载束的挠曲件具有窗口，通过该窗口，耦合到负载束的凹部接触凹坑接触点。 耦合到挠曲件的平衡重具有允许头部万向架组件的质心与凹坑接触点对准的构造。

公开(公告)号：US06989671B2

公开(公告)日：2006-01-24

申请号：US10342780

申请日：2003-01-14

Applicant: Li-Yan Zhu ,  Xiaofeng Zhang ,  Yen Fu ,  Ellis T. Cha

Inventor： Li-Yan Zhu ,  Xiaofeng Zhang ,  Yen Fu ,  Ellis T. Cha

IPC: G01R33/12

CPC classification number: G11B5/6005 ,  G11B5/012 ,  G11B5/40 ,  G11B5/455 ,  G11B5/5534 ,  G11B5/596 ,  G11B5/6076 ,  G11B27/36 ,  G11B2005/001 ,  G11B2220/20

Abstract: A method is described for calculating head disk interference (HDI) using a dynamic parametric test. In one embodiment, HDI is calculated based on an actual and ideal sensitivity profile based on a read-back signal track profile for the slider/head.

Abstract translation: 描述了一种使用动态参数测试来计算头盘干扰（HDI）的方法。 在一个实施例中，基于用于滑块/头的回读信号轨迹轮廓，基于实际和理想灵敏度轮廓计算HDI。

公开(公告)号：US5677812A

公开(公告)日：1997-10-14

申请号：US598790

申请日：1996-01-26

Applicant: Ellis T. Cha

Inventor： Ellis T. Cha

IPC: F16C17/00 ,  G11B5/60

CPC classification number: G11B5/6005

Abstract: An air bearing slider that maintains a relatively uniform flying height during variations in air speed and the skew of the slider. The slider has a raised rail disposed along the bottom surface of the slider body that forms a cavity. The cavity is configured to produce a subambient pressure when an air flow passes across the slider. The rail possesses a plurality of air bearing surfaces and has an opening positioned along the inner side of the slider. The opening is positioned and sized to provide a variable air flow into the cavity as the skew angle between the longitudinal axis of the slider and the direction of air flow changes. In this manner, a variable subambient pressure is developed within the cavity as the slider moves radially along the surface of a disk.

Abstract translation: 空气轴承滑块，其在空气速度的变化和滑块的偏斜期间保持相对均匀的飞行高度。 滑块具有沿着滑块体的底表面设置的凸起轨道，该凸台形成空腔。 空腔被配置为当空气流穿越滑块时产生次环压。 轨道具有多个空气轴承表面，并且具有沿着滑块的内侧定位的开口。 开口的定位和尺寸设置成当滑块的纵向轴线和空气流动方向改变之间的倾斜角度时向空腔提供可变气流。 以这种方式，当滑块沿着盘的表面径向移动时，在空腔内形成可变的低于环境的压力。

公开(公告)号：US5497085A

公开(公告)日：1996-03-05

申请号：US358282

申请日：1994-12-19

Applicant: Hong Tian ,  Jia-Kuen J. Lee ,  Ellis T. Cha

Inventor： Hong Tian ,  Jia-Kuen J. Lee ,  Ellis T. Cha

IPC: G11B21/21 ,  G11B5/60 ,  G11B5/84

CPC classification number: G11B5/6005

Abstract: A method is shown for testing a magnetic disk to be used in a disk drive. The method includes the steps of measuring a height profile of an outer radial edge of the disk, using the profile to determine a slope value for each of a pair of radial segments of the disk, calculating a difference value between the slope values of the pair, comparing the difference value to a preselected threshold difference value and indicating when the difference value is equal to or less than the threshold difference value. The threshold value indicates an outer most diameter of the disk where fly height operation for a head is still stable.

Abstract translation: 显示了一种用于测试在磁盘驱动器中使用的磁盘的方法。 该方法包括以下步骤：使用轮廓来测量盘的外径向边缘的高度轮廓，以确定盘的一对径向段中的每一个的斜率值，计算该对的斜率值之间的差值 将差分值与预先选择的阈值差值进行比较，并指示差值等于或小于阈值差值。 阈值表示磁头的飞行高度操作仍然稳定的磁盘的最外径。

公开(公告)号：US08274751B2

公开(公告)日：2012-09-25

申请号：US13065941

申请日：2011-04-01

Applicant: Zhu Feng ,  Xiaofeng Zhang ,  Ellis T. Cha

Inventor： Zhu Feng ,  Xiaofeng Zhang ,  Ellis T. Cha

IPC: G11B21/02 ,  G11B27/36 ,  G01R27/26

CPC classification number: G11B5/455 ,  G11B5/40 ,  G11B5/4555 ,  G11B5/6017 ,  G11B5/6058

Abstract: A system and method for measuring the modulation between a magnetic head and a magnetic storage medium, such as a disk, is disclosed. A magnetic read/write head is positioned above a magnetic storage medium at a given flying height. The magnetic read/write head reads a signal from the magnetic storage medium. A tester measures an alternating electric current between the magnetic read/write head through the slider and the magnetic storage medium. A computer may then calculate the modulation by the magnetic read/write head based on the alternating electric current. A DC voltage to the head may be applied to lower the flying height of the magnetic head.

公开(公告)号：US20110299191A1

公开(公告)日：2011-12-08

申请号：US13065941

申请日：2011-04-01

Applicant: Zhu Feng ,  Xiaofeng Zhang ,  Ellis T. Cha

Inventor： Zhu Feng ,  Xiaofeng Zhang ,  Ellis T. Cha

IPC: G11B21/02

CPC classification number: G11B5/455 ,  G11B5/40 ,  G11B5/4555 ,  G11B5/6017 ,  G11B5/6058

Abstract: A system and method for measuring the modulation between a magnetic head and a magnetic storage medium, such as a disk, is disclosed. A magnetic read/write head is positioned above a magnetic storage medium at a given flying height. The magnetic read/write head reads a signal from the magnetic storage medium. A tester measures an alternating electric current between the magnetic read/write head through the slider and the magnetic storage medium. A computer may then calculate the modulation by the magnetic read/write head based on the alternating electric current. A DC voltage to the head may be applied to lower the flying height of the magnetic head.

Abstract translation: 公开了一种用于测量诸如磁盘的磁头和磁存储介质之间的调制的系统和方法。 在给定的飞行高度处，磁读/写头位于磁存储介质上方。 磁读/写头读取来自磁存储介质的信号。 测试仪测量通过滑动器的磁读/写磁头与磁存储介质之间的交流电流。 计算机然后可以基于交流电流计算磁读/写头的调制。 可以施加到头部的DC电压以降低磁头的飞行高度。