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公开(公告)号：US11482254B2
公开(公告)日：2022-10-25
申请号：US17396359
申请日：2021-08-06
摘要： Control circuitry is disclosed configured to control inner fine actuators of a first plurality of inner actuator arms and independently control a first outer fine actuator of a first outer actuator arm. Inner fine actuators of a second plurality of inner actuator arms are controlled while independently controlling a second outer fine actuator of a second outer actuator arm. Each actuator arm comprises at least one head configured to access a disk surface of a disk.
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公开(公告)号：US10950263B1
公开(公告)日：2021-03-16
申请号：US16716115
申请日：2019-12-16
发明人： Kia Moh Teo , Yanning Liu
摘要： Disclosed herein is an apparatus that comprises an actuator arm that is pivotably connectable to a pivot post at a proximal end. The actuator arm extends linearly along a first axis from the proximal end to a distal end. The apparatus also comprises a lift tab that comprises an elongate member. The elongate member comprises a proximal end, coupled to the distal end of the actuator arm, and a distal end. The elongate member extends linearly along a second axis from the proximal end to the distal end. The second axis intersects the first axis to define an angle between the first axis and the second axis. The distal end of the elongate member is configured to engage an incline member when the actuator arm is in an unload position to lift the actuator arm.
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公开(公告)号：US09881640B2
公开(公告)日：2018-01-30
申请号：US15083413
申请日：2016-03-29
发明人： Yih-Jen Dennis Chen , Yanning Liu , Kia Moh Teo
CPC分类号： G11B5/455 , G01R31/026 , G11B5/48 , G11B5/4826 , G11B5/4833 , G11B5/484 , G11B5/4846 , G11B5/4853 , G11B5/486 , Y10T29/49027
摘要： A head suspension assembly for a disk drive includes a load beam and a laminated flexure that comprises a stainless steel layer, a copper trace layer, and a dielectric layer between the stainless steel layer and the copper trace layer. The laminated flexure includes a flexure tail that extends away from the load beam to a flexure tail terminal region. The copper trace layer includes a plurality of flexure bond pads in the flexure tail terminal region. The stainless steel layer includes a plurality of backing islands in the flexure tail terminal region. Each of the plurality of backing islands is aligned with a corresponding one of the plurality of flexure bond pads. A noble metal layer is disposed on the plurality of backing islands.
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4.发明授权公开(公告)号：US09324344B1
公开(公告)日：2016-04-26
申请号：US14322616
申请日：2014-07-02
发明人： Yih-Jen Dennis Chen , Yanning Liu , Kia Moh Teo
IPC分类号： G11B5/48
CPC分类号： G11B5/4813 , G11B5/4826 , G11B5/4833 , G11B5/484 , G11B5/4846 , G11B5/4853 , G11B5/486 , Y10T29/49027
摘要： A head gimbal assembly for a disk drive includes a flexure tail terminal region having flexure bond pads in electrical communication with the head. Each of the flexure bond pads is aligned with one of a plurality of flexible printed circuit (FPC) bond pads. An anisotropic conductive film is disposed between the FPC and the flexure tail terminal region. The flexure tail terminal region overlaps the anisotropic conductive film in a bonding area. Each of the flexure bond pads is bonded to one of the plurality of FPC bond pads by the anisotropic conductive film in a bonding area. A conductive layer of the flexure tail terminal region includes an exposed conductive ground pad that is disposed outside of the bonding area, and/or disposed outside of an application area of a thermode tool that is pressed against the flexure tail terminal region during the bonding process.
摘要翻译： 用于盘驱动器的头万向架组件包括具有与头部电连通的挠曲接合垫的弯曲尾端区域。 每个挠曲接合垫与多个柔性印刷电路（FPC）接合焊盘中的一个对准。 各向异性导电膜设置在FPC和挠曲尾端子区域之间。 弯曲尾端区域在粘合区域中与各向异性导电膜重叠。 每个挠性接合焊盘通过粘合区域中的各向异性导电膜结合到多个FPC接合焊盘中的一个。 弯曲尾端区域的导电层包括暴露的导电接地焊盘，其设置在接合区域的外部，和/或设置在接合工艺期间被压靠在弯曲尾端子区域上的热电偶工具的施加区域的外部 。
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公开(公告)号：US08902538B1
公开(公告)日：2014-12-02
申请号：US13932705
申请日：2013-07-01
发明人： Yanning Liu , Nathan J. Santee , Yi Lu , Yanan Huang , Toviah N. Hirschberg
CPC分类号： G11B5/455 , G11B5/4873 , G11B5/5552 , G11B5/59688
摘要： A disk drive is disclosed comprising a disk media, a head stack assembly (HSA) having a head coupled to its distal end, a microactuator used to provide fine position of the head and a voice coil motor (VCM) configured to actuate the HSA over the disk media, and control circuitry. The control circuitry may be configured to move the HSA in an alternating manner across the disk media while actuating the microactuator. One or more performance characteristics of the microactuator may be measured before and after the actuation of the microactuator, and failure may be detected based on the absolute or relative change of the one or more performance characteristics.
摘要翻译： 公开了一种磁盘驱动器，其包括磁盘介质，具有与其远端连接的磁头的磁头堆叠组件（HSA），用于提供磁头精细位置的微致动器和配置成致动HSA的音圈电机（VCM） 磁盘介质和控制电路。 控制电路可以被配置为在致动微致动器的同时以交替的方式跨越盘介质移动HSA。 可以在致动微致动器之前和之后测量微致动器的一个或多个性能特征，并且可以基于一个或多个性能特性的绝对或相对变化来检测故障。
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6.发明授权Disk drive head suspension assembly with load beam inner rails between piezo actuator elements 有权磁盘驱动器头悬挂组件，带有压力执行元件之间的负载梁内轨公开(公告)号：US08780504B1
公开(公告)日：2014-07-15
申请号：US13917654
申请日：2013-06-14
发明人： Kia Moh Teo , Yih-Jen D. Chen , Tzong-Shii Pan , Wing C. Shum , Yanning Liu
IPC分类号： G11B17/02
CPC分类号： G11B5/4873
摘要： A head suspension assembly for a disk drive includes a load beam, and first and second piezoelectric elements that are disposed within first and second piezoelectric element receiving windows in a mounting plate, respectively. The load beam includes a plurality of rails that includes first and second outer rails and first and second inner rails, each of the plurality of rails being oriented in the longitudinal direction and being formed or bent out of the load beam plane. The first and second inner rails are disposed between the first and second piezoelectric elements, and the first and second outer rails are disposed not between the first and second piezoelectric elements. The first piezoelectric element is disposed between the first outer rail and the first inner rail, and the second piezoelectric element is disposed between the second inner rail and the second outer rail.
摘要翻译： 用于盘驱动器的头悬挂组件包括负载梁，以及分别设置在安装板中的第一和第二压电元件接收窗口内的第一和第二压电元件。 负载梁包括多个轨道，其包括第一和第二外轨道以及第一和第二内轨道，多个轨道中的每一个在纵向方向上定向并且被形成或弯曲到负载梁平面外。 第一和第二内轨设置在第一和第二压电元件之间，并且第一和第二外轨不设置在第一和第二压电元件之间。 第一压电元件设置在第一外轨和第一内轨之间，第二压电元件设置在第二内轨和第二外轨之间。
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公开(公告)号：US20210295864A1
公开(公告)日：2021-09-23
申请号：US16824514
申请日：2020-03-19
发明人： Kia Moh Teo , Yanning Liu
IPC分类号： G11B5/48
摘要： An approach to a head gimbal assembly (HGA), such as for a hard disk drive, includes a swage plate assembly coupling a suspension to one side of an actuator arm, where the swage plate assembly includes a baseplate having a through-hole and a swage boss insert comprising a flange and a swage boss extending from the flange through the baseplate through-hole. The HGA is configured such that the baseplate is positioned between the flange and the actuator arm, such that a distal surface of the flange is the surface closest to a corresponding recording medium, whereby the thickness of the suspension is effectively recessed within the material dimensional buildup of the other parts and a greater clearance is provided between the suspension and the recording medium.
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公开(公告)号：US08792213B1
公开(公告)日：2014-07-29
申请号：US13772298
申请日：2013-02-20
发明人： Mukund Vijay , Wing C. Shum , Kia Moh Teo , Yanning Liu
IPC分类号： G11B5/39
CPC分类号： G11B5/486 , G11B5/4826 , G11B5/483 , G11B5/4833 , G11B5/4853
摘要： A suspension assembly used in magnetic disk drives includes a load beam and a gimbal assembly coupled to an end of the load beam. The gimbal assembly includes a support having a left outrigger and a right outrigger, first tethers or connectors disposed along the left outrigger, second tethers or connectors disposed along the right outrigger, and a flexible circuit assembly that includes a left electrical trace and a right electrical trace. The flexible circuit assembly is coupled to the support through the first tethers or connectors that couple the left electrical trace to the left outrigger and the second tethers or connectors that couple the right electrical trace to the right outrigger. The first and second tethers or connectors are made of stainless steel with a polyimide coating and there are three first tethers or connectors and three second tethers or connectors.
摘要翻译： 在磁盘驱动器中使用的悬挂组件包括耦合到负载梁的端部的负载梁和万向节组件。 万向节组件包括具有左支架和右支架的支撑件，沿着左支架设置的第一系绳或连接器，沿着右支腿设置的第二系绳或连接器，以及柔性电路组件，其包括左电迹线和右电导线 跟踪。 柔性电路组件通过将左电迹线耦合到左支腿支架的第一系绳或连接器以及将右电迹线耦合到右支架的第二系绳或连接器耦合到支撑件。 第一和第二系绳或连接器由具有聚酰亚胺涂层的不锈钢制成，并且有三个第一系绳或连接器和三个第二系绳或连接器。
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9.发明授权Disk drive head gimbal assembly having a jumper in a flexible printed circuit overlap region 有权具有在柔性印刷电路重叠区域中的跳线的磁盘驱动头万向架组件公开(公告)号：US08760812B1
公开(公告)日：2014-06-24
申请号：US13797893
申请日：2013-03-12
发明人： Yih-Jen D. Chen , Tzong-Shii Pan , Yanning Liu
IPC分类号： G11B5/127
CPC分类号： G11B5/486 , G11B5/4846 , H05K1/118 , H05K3/323 , H05K3/361
摘要： A head stack assembly (HSA) for a disk drive includes a flexible printed circuit (FPC). The FPC includes a plurality of electrically conductive FPC traces, each leading to a respective one of a plurality of FPC bond pads. The HSA also includes a head gimbal assembly (HGA) having a laminated flexure with a plurality of electrically conductive flexure bond pads that are bonded to the plurality of FPC bond pads. The laminated flexure includes a flexure tail having an overlap region that overlaps the FPC. A structural layer of the laminated flexure includes a jumper in the overlap region. The jumper is electrically connected to at least two of the plurality of flexure electrical traces in the flexure conductive layer. The jumper is disposed at least 50 microns from any of the plurality of FPC electrical traces or FPC bond pads.
摘要翻译： 用于磁盘驱动器的磁头组组件（HSA）包括柔性印刷电路（FPC）。 FPC包括多个导电FPC迹线，每个引导到多个FPC接合焊盘中的相应一个。 HSA还包括头部万向节组件（HGA），该头部万向节组件（HGA）具有多个导电挠曲接合焊盘的层压挠曲件，该多个导电挠曲接合焊盘接合到多个FPC接合焊盘。 层压挠曲包括具有与FPC重叠的重叠区域的弯曲尾部。 层叠挠曲件的结构层在重叠区域中包括跳线。 跳线电连接到挠曲导电层中的多个挠曲电迹线中的至少两个。 跳线距离多个FPC电迹线或FPC接合焊盘中的任一个布置至少50微米。
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公开(公告)号：US11232811B2
公开(公告)日：2022-01-25
申请号：US16801921
申请日：2020-02-26
发明人： Kia Moh Teo , Yanning Liu , Hiroyasu Tsuchida , Kathryn Tao
摘要： An approach to a head gimbal assembly, such as for a hard disk drive, includes an offset swage plate coupling a suspension to one side of an actuator arm and another offset swage plate coupling another suspension to an opposing second side of the actuator arm. Each offset swage plate includes a main body, a swage through-hole through a first lateral or longitudinal side of the main body, a swage boss around the perimeter of the swage through-hole and extending substantially normal to the main body, and a clearance through-hole through an opposing second lateral or longitudinal side of the main body, the clearance through-hole having no swage boss. Each offset swage plate is configured in the assembly in a position opposing the other, such that the corresponding swage bosses are positioned on different lateral/longitudinal sides of the arm tip so that there is no coaxial swage boss buildup.
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