Method and structures used for connecting recording head signal wires in a microactuator
    12.
    发明授权
    Method and structures used for connecting recording head signal wires in a microactuator 失效
    用于在微型致动器中连接记录头信号线的方法和结构

    公开(公告)号:US06262868B1

    公开(公告)日:2001-07-17

    申请号:US09000940

    申请日:1997-12-30

    CPC classification number: G11B5/4826 G11B5/5552

    Abstract: A rotary microactuator includes a stationary structure formed on a substrate, a movable structure, and at least a pair of wires connected to the movable structure that conduct a signal associated with the movable structure. Each wire of the pair of wires has a first end that is connected in a cantilever manner to the substrate and a second end that is connected to the movable structure. The wires each have a serpentine shape between the first end and the second end, a predetermined spring stiffness, and a predetermined electrical characteristic. The microactuator also includes a magnetic head slider that is attached to the movable structure, and at least another pair of wires conducting a signal associated with a magnetic head of the slider. Each of the another pair of wires has a first end that is connected in a cantilever manner to the substrate and a second end that is connected to the movable structure. Like the first pair of wires, each of the another pair of wires has a serpentine shape between the first end and the second end of the wire. Electronic circuitry for conditioning the electrical signals associated with the magnetic head can be fabricated as part of the substrate and be connected to one of the pair of wires. The electronic circuitry can, for example, amplify electrical drive signals associated with the magnetic head, be a recording sensor preamplifier, and/or provide ESD protection for the electrical signals associated with the magnetic head.

    Abstract translation: 旋转微型致动器包括形成在基板上的固定结构,可移动结构以及连接到可移动结构的至少一对导线,该导线传导与可移动结构相关联的信号。 一对电线中的每根导线具有以悬臂方式连接到基板的第一端和连接到可移动结构的第二端。 导线各自在第一端和第二端之间具有蛇形形状,预定的弹簧刚度和预定的电特性。 微致动器还包括附接到可移动结构的磁头滑动器,以及至少另一对线,其传导与滑块的磁头相关联的信号。 另一对电线中的每一个具有以悬臂方式连接到基板的第一端和连接到可移动结构的第二端。 与第一对电线一样,另一对电线中的每一根在电线的第一端和第二端之间具有蛇形形状。 用于调节与磁头相关联的电信号的电子电路可以被制造为衬底的一部分并且连接到一对电线中的一个。 例如,电子电路可以放大与磁头相关联的电驱动信号,作为记录传感器前置放大器,和/或为与磁头相关联的电信号提供ESD保护。

    Disk drive with shock detection based on thermoresistive signal from
magnetoresistive head
    14.
    发明授权
    Disk drive with shock detection based on thermoresistive signal from magnetoresistive head 失效
    基于磁阻头的耐热信号的磁盘驱动器

    公开(公告)号:US5777815A

    公开(公告)日:1998-07-07

    申请号:US664960

    申请日:1996-06-13

    CPC classification number: G11B5/5582

    Abstract: A magnetic recording disk drive with a magnetoresistive (MR) read sensor or head has a shock and vibration detection circuitry responsive to a thermoresistive signal contained in the signal from the head. The MR head is heated by an electrical bias current and is supported on the head carrier near the surface of the disk. External shock or vibration to the disk drive alters the spacing between the carrier and the disk, which causes fluctuations in the head temperature due to cooling of the heated head by the disk. These temperature fluctuations are reflected in the signal from the head as a thermoresistive signal comprising modulation of a baseline voltage level. The shock detection circuitry compares positive and negative excursions of this thermoresistive signal with a predetermined threshold voltage level. When the threshold is exceeded, indicating an external shock or vibration in excess of an allowable limit, writing of data is inhibited.

    Abstract translation: 具有磁阻(MR)读取传感器或磁头的磁记录盘驱动器具有响应于来自磁头的信号中包含的热电阻信号的冲击和振动检测电路。 MR头由电偏置电流加热,并被支撑在靠近盘表面的头托架上。 对磁盘驱动器的外部冲击或振动会改变载体和磁盘之间的间距,这会导致磁头温度波动,这是由于加热磁头由磁盘冷却。 这些温度波动反映在来自头部的信号中,作为包括基线电压电平调制的热电阻信号。 冲击检测电路将该热阻信号的正偏移和负偏移与预定的阈值电压水平进行比较。 当超过阈值时,表示超出允许极限的外部冲击或振动,禁止写入数据。

    MAGNETORESISTIVE SENSOR HAVING A STRUCTURE FOR ACTIVATING AND DEACTIVATING ELECTROSTATIC DISCHARGE PREVENTION CIRCUITRY
    15.
    发明申请
    MAGNETORESISTIVE SENSOR HAVING A STRUCTURE FOR ACTIVATING AND DEACTIVATING ELECTROSTATIC DISCHARGE PREVENTION CIRCUITRY 有权
    具有用于激活和消除静电放电防止电路的结构的磁传感器

    公开(公告)号:US20120243125A1

    公开(公告)日:2012-09-27

    申请号:US13433192

    申请日:2012-03-28

    CPC classification number: G11B5/40

    Abstract: A structure for preventing Electrostatic Discharge (ESD) damage to a magnetoresistive sensor during manufacture. The structure includes a switching element that can be switched off during testing of the sensor and then switched back on to provide ESD shunting to the sensor. The switch can be a thermally activated mechanical relay built onto the slider. The switch could also be a programmable resistor that includes a solid electrolyte sandwiched between first and second electrodes. One of the electrodes functions as an anode. When voltage is applied in a first direction an ion bridge forms across through the electrolyte across electrodes making the resistor conductive. When a voltage is applied in a second direction, the ion bridge recedes and the programmable resistor becomes essentially non-conductive.

    Abstract translation: 用于在制造期间防止静电放电(ESD)损坏磁阻传感器的结构。 该结构包括开关元件,该开关元件可以在测试传感器期间关闭,然后重新接通以向传感器提供ESD分流。 开关可以是内置在滑块上的热激活机械继电器。 开关也可以是可编程电阻器,其包括夹在第一和第二电极之间的固体电解质。 电极之一用作阳极。 当沿第一方向施加电压时,离子桥跨越电解质跨过电极跨过电极,使电阻器导电。 当沿第二个方向施加电压时,离子桥退出,可编程电阻基本上不导电。

    Magnetoresistive sensor having a structure for activating and deactivating electrostatic discharge prevention circuitry
    16.
    发明授权
    Magnetoresistive sensor having a structure for activating and deactivating electrostatic discharge prevention circuitry 失效
    具有用于激活和去激活静电放电防止电路的结构的磁阻传感器

    公开(公告)号:US08169751B2

    公开(公告)日:2012-05-01

    申请号:US11426908

    申请日:2006-06-27

    CPC classification number: G11B5/40

    Abstract: A structure for preventing Electrostatic Discharge (LSD) damage to a magnetoresistive sensor during manufacture. The structure includes a switching element that can be switched off during testing of the sensor and then switched back on to provide ESD shunting to the sensor. The switch can be a thermally activated mechanical relay built onto the slider. The switch could also be a programmable resistor that includes to solid electrolyte sandwiched between first and second electrodes. One of the electrodes functions as an anode. When voltage is applied in a first direction an ion bridge forms across through the electrolyte across electrodes making the resistor conductive. When a voltage is applied in a second direction, the ion bridge recedes and the programmable resistor becomes essentially non-conductive.

    Abstract translation: 用于在制造期间防止静电放电(LSD)损坏磁阻传感器的结构。 该结构包括开关元件,该开关元件可以在测试传感器期间关闭,然后重新接通以向传感器提供ESD分流。 该开关可以是内置在滑块上的热激活机械继电器。 开关也可以是可编程电阻器,其包括夹在第一和第二电极之间的固体电解质。 电极之一用作阳极。 当沿第一方向施加电压时,离子桥跨越电解质跨过电极跨过电极,使电阻器导电。 当沿第二个方向施加电压时,离子桥退出,可编程电阻基本上不导电。

    Post-parting etch to smooth silicon sliders
    17.
    发明授权
    Post-parting etch to smooth silicon sliders 失效
    后期蚀刻到光滑的硅滑块

    公开(公告)号:US07396770B2

    公开(公告)日:2008-07-08

    申请号:US11329930

    申请日:2006-01-10

    CPC classification number: G11B5/102 C09K13/08 G11B5/3173

    Abstract: To smooth silicon sliders that have been parted from each other on a wafer by DRIE, an isotropic etch using fluorine either in a gas or in an aqueous solution is performed prior to separating the individual sliders from the wafer.

    Abstract translation: 为了平滑通过DRIE在晶片上彼此分离的硅滑块,在将各个滑块与晶片分离之前,进行在气体或水溶液中使用氟的各向同性蚀刻。

    Method for manufacturing thin-film magnetic head sliders
    18.
    发明授权
    Method for manufacturing thin-film magnetic head sliders 有权
    制造薄膜磁头滑块的方法

    公开(公告)号:US07191508B2

    公开(公告)日:2007-03-20

    申请号:US10917591

    申请日:2004-08-13

    Abstract: A method for manufacturing thin-film magnetic head sliders is disclosed. Initially, an elastic layer, which may be made of poly-dimethyl siloxane (PDMS), is spun on a wafer and is thermally cured. Then, a resist layer is spun on the elastic layer. Both the resist layer and the elastic layer are subsequently peeled off together from the wafer. Next, the peeled resist layer/elastic layer is applied onto a group of magnetic heads with the resist layer in direct contact with the magnetic heads. Finally, the elastic layer is peeled off from the resist layer such that the resist layer remains attaching to the magnetic heads.

    Abstract translation: 公开了一种制造薄膜磁头滑块的方法。 最初,可以由聚二甲基硅氧烷(PDMS)制成的弹性层在晶片上旋转并被热固化。 然后,在弹性层上旋转抗蚀剂层。 抗蚀剂层和弹性层随后从晶片一起剥离。 接下来,将剥离的抗蚀剂层/弹性层施加到一组磁头上,其中抗蚀剂层与磁头直接接触。 最后,弹性层从抗蚀剂层剥离,使得抗蚀剂层保持附着在磁头上。

    Lapping monitor for monitoring the lapping of transducers
    19.
    发明授权
    Lapping monitor for monitoring the lapping of transducers 失效
    用于监测传感器研磨的研磨监测器

    公开(公告)号:US06699102B2

    公开(公告)日:2004-03-02

    申请号:US09759830

    申请日:2001-01-12

    Abstract: A lapping monitor for monitoring the lapping of a lapping surface of a body having at least one transducer which has a height that has to be lapped. The lapping monitor has a lap unit for lapping the lapping surface, at least one lapping indicator mounted close to the transducer to indicate the height of the transducer and a control block in the body at a certain distance from the lapping indicator or indicators. It is also possible to use a property of the transducers themselves, e.g., their resistance, to indicate their height. The control block receives indication of the height of the transducers being lapped from the lapping indicators or from the transducers via an electrical connection. The control block is further equipped with test contacts for establishing an external connection. The lapping monitor is particularly well-suited for performing 4-point resistance tests of the lapping indicators or transducers and can be effectively employed in lapping rows of magnetoresistive transducers such as MR or GMR heads to accurate heights.

    Abstract translation: 一种用于监测身体研磨表面的研磨的研磨监测器,其具有至少一个具有必须重叠的高度的换能器。 研磨监测器具有用于研磨研磨表面的搭接单元,安装在传感器附近的至少一个研磨指示器,以指示换能器的高度和与研磨指示器或指示器相距一定距离的主体中的控制块。 也可以使用换能器本身的特性,例如它们的阻力来表示它们的高度。 控制块通过电连接接收从研磨指示器或从换能器上研磨的换能器的高度的指示。 控制块还配备有用于建立外部连接的测试触点。 研磨显示器特别适用于对研磨指示器或换能器进行4点电阻测试,并且可以有效地用于研磨诸如MR或GMR磁头的磁阻传感器行以达到准确的高度。

    Contact magnetic recording disk file with improved head assembly
    20.
    发明授权
    Contact magnetic recording disk file with improved head assembly 失效
    接触磁记录磁盘文件,改进头组件

    公开(公告)号:US5734519A

    公开(公告)日:1998-03-31

    申请号:US37064

    申请日:1993-03-25

    CPC classification number: G11B5/484 G11B5/10 G11B5/255

    Abstract: A contact recording disk file uses an integrated head-suspension assembly having a head carrier with a dual-layer wear pad for contacting the disk during read and write operations. The outer wear layer of the pad is relatively soft and wear prone compared to a harder and more wear-resistant inner layer. The outer wear layer wears away at a relatively rapid rate during initial wear-in of the head carrier. In this manner the head pole pieces, which extend into the wear pad, are rapidly put into contact with the disk, thereby compensating for initial misalignment of the wear pad with the surface of the disk. The inner wear layer then provides wear resistance over the life of the disk file. In the preferred embodiment, both the outer and inner wear layers are formed of essentially amorphous carbon doped with different amounts of hydrogen.

    Abstract translation: 接触式记录磁盘文件使用集成的头悬挂组件,其具有带有双层磨损垫的头部托架,用于在读取和写入操作期间接触盘。 相对于较硬和更耐磨的内层,该垫的外部耐磨层相对较软并且容易发生倾向。 在头托架的初始磨损期间,外磨损层以相对较快的速度磨损。 以这种方式,延伸到耐磨垫中的头部极片迅速地与盘接触,从而补偿磨损垫与盘表面的初始不对准。 然后,内部磨损层在磁盘文件的使用寿命内提供耐磨性。 在优选实施例中,外耐磨层和内耐磨层均由掺杂有不同量氢的基本无定形碳形成。

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