公开(公告)号：US07233460B2

公开(公告)日：2007-06-19

申请号：US10614217

申请日：2003-07-08

Applicant: Ellis T. Cha

Inventor： Ellis T. Cha

IPC: G11B21/21

CPC classification number: G11B5/6082

Abstract: A subambient pressure air bearing slider for disk drives and the like is presented where features of the slider are modular, in that certain parameters of the slider can be modified independently of one another. In one example, lateral dimensions and placement of side and trailing air bearing surfaces can be used to control flying height sensitivity due to crowning in the slider. Longitudinal dimensions of the side air bearing surfaces can be used to control flying height sensitivity due to camber in the slider body. Low-profile members (e.g., ones that do not form air bearing surfaces) may be used to control the dimensions of the subambient pressure region to control overall flying height.

Abstract translation: 提供了一种用于磁盘驱动器等的低压空气轴承滑块，其中滑块的特征是模块化的，因为滑块的某些参数可以彼此独立地进行修改。 在一个示例中，侧向尺寸和侧面和尾部空气轴承表面的放置可以用于控制由于滑块中的隆起而引起的飞行高度灵敏度。 侧面空气轴承表面的纵向尺寸可用于控制由于滑块体中的弯度引起的飞行高度灵敏度。 低轮廓构件（例如，不形成空气轴承表面的构件）可以用于控制次级压力区域的尺寸以控制总体飞行高度。

公开(公告)号：US06943989B2

公开(公告)日：2005-09-13

申请号：US10165786

申请日：2002-06-07

Applicant: Ellis T. Cha ,  Hao Qing Pan

Inventor： Ellis T. Cha ,  Hao Qing Pan

IPC: G11B5/60 ,  G11B21/21

CPC classification number: G11B5/6005

Abstract: A subambient pressure air bearing slider for disk drives and the like is presented where the subambient pressure area is divided into two or more areas. For example, a first area extending between the rails can have a depth (e.g., between 20 and 100 microinches) relative to the height of the rails, while the second area has a deeper depth (e.g., between 20 and 200 microinches). In one embodiment, the second area is placed in the outside rear quadrant relative to the rear edge of the slider and the rail closer to the outside diameter of the moving disk. By partitioning the subambient pressure area and properly selecting the depths of the partitioned areas, the slider can achieve a more uniform flying height over the range of diameters of the moving disk, at different rotational speed velocities for the disk and at different operation altitudes.

Abstract translation: 本发明提供了一种用于磁盘驱动器等的低压空气轴承滑块，其中，将低压区域分为两个或多个区域。 例如，在轨道之间延伸的第一区域可以相对于轨道的高度具有深度（例如，在20和100微英寸之间），而第二区域具有更深的深度（例如，在20和200微英寸之间）。 在一个实施例中，第二区域相对于滑块的后边缘放置在外部后部象限中，并且轨道更靠近移动盘的外径。 通过划分子环境压力区域并适当地选择分隔区域的深度，滑块可以在不同的转盘速度和不同的操作高度下在移动盘的直径范围内实现更均匀的飞行高度。

公开(公告)号：US20100310904A1

公开(公告)日：2010-12-09

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: G11B5/72

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：US20090135512A1

公开(公告)日：2009-05-28

申请号：US12365041

申请日：2009-02-03

Applicant: Zhu FENG ,  Xiaofeng ZHANG ,  Ellis T. CHA

Inventor： Zhu FENG ,  Xiaofeng ZHANG ,  Ellis T. CHA

IPC: G11B27/36

CPC classification number: G11B5/40

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。

公开(公告)号：US20080239572A1

公开(公告)日：2008-10-02

申请号：US11692133

申请日：2007-03-27

Applicant: Yen FU ,  Ellis T. CHA ,  Chao-Hui YANG

Inventor： Yen FU ,  Ellis T. CHA ,  Chao-Hui YANG

IPC: G11B5/48

CPC classification number: G11B5/4833 ,  G11B5/4873

Abstract: A flexure with improved temperature sensitivity is disclosed. An embodiment of the present invention includes a bi-layered flexure that raises or lowers a read/write element a distance that is approximately equal to the distance of protrusion and retraction at varying temperatures.

Abstract translation: 公开了具有改善的温度灵敏度的挠曲。 本发明的实施例包括双层弯曲，其使读/写元件的距离大大等于在变化的温度下的突出和缩回的距离。

公开(公告)号：US20080176108A1

公开(公告)日：2008-07-24

申请号：US11655025

申请日：2007-01-18

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

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

IPC: G11B5/40 ,  B05D5/00 ,  C23C14/14 ,  C23C14/22 ,  G11B5/127

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 method for forming a protective bilayer on a magnetic read/write head or magnetic disk. 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: 一种在磁读/写磁头或磁盘上形成保护双层的方法。 双层形成为粘合增强底层和保护性金刚石碳（DLC）覆盖层。 底层由铝或合金化的氮氧化铝形成，其具有通式为Al x Si x N y或Y z O 2， 其中Me z z表示Ti z z，Si z z或Cr z z， SUB>，并且其中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：US07085083B2

公开(公告)日：2006-08-01

申请号：US10728450

申请日：2003-12-05

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

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

IPC: G11B27/36

CPC classification number: G11B5/455 ,  G11B5/54

Abstract: A system and method for testing the stroke and frequency response of a micro-actuator is disclosed. A dynamic parameter tester writes two concentric tracks on a noise free portion of a magnetic storage medium. A magnetic read/write head and a micro-actuator is positioned between the two concentric tracks. An initial oscillating voltage is applied at a first frequency to the micro-actuator while reading back a signal from the two concentric tracks. A stroke characteristic of the micro-actuator is calculated based in part on the read-back signal. The initial oscillating voltage is determined from previous tests. The first stroke characteristic of the micro-actuator is based on a time-averaged amplitude of the first signal. The two concentric tracks are written at a pre-determined pitch.

Abstract translation: 公开了一种用于测试微致动器的行程和频率响应的系统和方法。 动态参数测试仪在磁存储介质的无噪声部分上写入两个同心轨道。 磁读/写头和微致动器位于两个同心轨道之间。 初始振荡电压以第一频率施加到微致动器，同时从两个同心轨道读回信号。 部分地基于回读信号计算微致动器的行程特性。 初始振荡电压由先前的测试确定。 微致动器的第一冲程特性是基于第一信号的时间平均振幅。 两个同心轨道以预定间距进行写入。

公开(公告)号：US07046473B2

公开(公告)日：2006-05-16

申请号：US10941420

申请日：2004-09-14

Applicant: Yen Fu ,  Ellis T. Cha ,  Zhu Feng

Inventor： Yen Fu ,  Ellis T. Cha ,  Zhu Feng

IPC: G11B21/02

CPC classification number: G11B5/6005 ,  G11B5/6064 ,  G11B5/607

Abstract: 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.

Abstract translation: 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。 与读/写头分开的滑块的充电表面允许充电电互连以向滑块施加电荷。 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。 同时，加热元件使滑动件变形，以进一步调节读/写头与盘表面之间的间隔。 反馈控制系统可以通过测量滑块和盘周围的温度或其他环境条件来监控和控制磁头盘间距。