公开(公告)号：US20210249040A1

公开(公告)日：2021-08-12

申请号：US17165749

申请日：2021-02-02

申请人： Magnecomp Corporation

发明人： Peter Hahn ,  David Glaess ,  Kuen Chee Ee ,  Benjapa Tanampee ,  Keith Allan Vanderlee ,  Preecha Sudachun ,  Johnathan Phu

IPC分类号： G11B5/48

摘要： A method of manufacturing a tri-stage assembly is provided. The method includes attaching a first microactuator and a second microactuator to a trace gimbal to a flexure during a PZT on flexure process (POF). The first microactuator is located at a distal end of the flexure and the second microactuator located at a proximal end of the flexure. The method also includes welding the trace gimbal to a baseplate, and a load beam to secure the trace gimbal including the first microactuator and the second microactuator.

公开(公告)号：US11741990B2

公开(公告)日：2023-08-29

申请号：US16056158

申请日：2018-08-06

申请人： Magnecomp Corporation

发明人： Christopher G. Dunn ,  Benjapa Tanampee

IPC分类号： G11B5/48

CPC分类号： G11B5/4853 ,  G11B5/486 ,  G11B5/4826 ,  G11B5/4833 ,  G11B5/4846

摘要： In a disk drive having a flexible circuit tail that is routed within a recess in the actuator arm, a dielectric spacer is added to the top of the tail in order to space the circuit traces within the tail further away from the electrically conductive actuator arm, and to make more repeatable that spacing. The added spacing reduces electrical coupling and thus increases the bandwidth of the circuit. The spacer can be in the form of a section of the same viscoelastic material that is used elsewhere as a vibration dampener on the suspension, the viscoelastic material being adhered to the tail before the tail is inserted within the recess. Alternatively, the spacer can be a thickened region of the flexible circuit covercoat in the area where the tail will reside within the recess.

公开(公告)号：US20180342263A1

公开(公告)日：2018-11-29

申请号：US16056158

申请日：2018-08-06

申请人： Magnecomp Corporation

发明人： Christopher G. Dunn ,  Benjapa Tanampee

IPC分类号： G11B5/48

摘要： In a disk drive having a flexible circuit tail that is routed within a recess in the actuator arm, a dielectric spacer is added to the top of the tail in order to space the circuit traces within the tail further away from the electrically conductive actuator arm, and to make more repeatable that spacing. The added spacing reduces electrical coupling and thus increases the bandwidth of the circuit. The spacer can be in the form of a section of the same viscoelastic material that is used elsewhere as a vibration dampener on the suspension, the viscoelastic material being adhered to the tail before the tail is inserted within the recess. Alternatively, the spacer can be a thickened region of the flexible circuit covercoat in the area where the tail will reside within the recess.

公开(公告)号：US10043541B1

公开(公告)日：2018-08-07

申请号：US15350036

申请日：2016-11-12

申请人： Magnecomp Corporation

发明人： Christopher G. Dunn ,  Benjapa Tanampee

IPC分类号： G11B5/48

摘要： In a disk drive having a flexible circuit tail that is routed within a recess in the actuator arm, a dielectric spacer is added to the top of the tail in order to space the circuit traces within the tail further away from the electrically conductive actuator arm, and to make more repeatable that spacing. The added spacing reduces electrical coupling and thus increases the bandwidth of the circuit. The spacer can be in the form of a section of the same viscoelastic material that is used elsewhere as a vibration dampener on the suspension, the viscoelastic material being adhered to the tail before the tail is inserted within the recess. Alternatively, the spacer can be a thickened region of the flexible circuit covercoat in the area where the tail will reside within the recess.

公开(公告)号：US11348608B2

公开(公告)日：2022-05-31

申请号：US17165749

申请日：2021-02-02

申请人： Magnecomp Corporation

发明人： Peter Hahn ,  David Glaess ,  Kuen Chee Ee ,  Benjapa Tanampee ,  Keith Allan Vanderlee ,  Preecha Sudachun ,  Johnathan Phu

IPC分类号： G11B5/48

摘要： A method of manufacturing a tri-stage assembly is described herein. The method includes attaching a first microactuator and a second microactuator to a trace gimbal to a flexure during a PZT on flexure process (POF). The first microactuator is located at a distal end of the flexure and the second microactuator located at a proximal end of the flexure. The method also includes welding the trace gimbal to a baseplate, and a load beam to secure the trace gimbal including the first microactuator and the second microactuator.

公开(公告)号：US09330693B1

公开(公告)日：2016-05-03

申请号：US14491323

申请日：2014-09-19

申请人： Magnecomp Corporation

发明人： Peter Hahn ,  Benjapa Tanampee ,  Jatuporn Nakarpha ,  Christopher G. Dunn

IPC分类号： G11B5/48

CPC分类号： G11B5/48 ,  G11B5/484 ,  G11B5/4846 ,  G11B5/4853 ,  G11B5/486

摘要： An electrical circuit for a disk drive suspension has a first signal trace above a grounded support layer which is typically stainless steel, and a second signal trace below the support layer, the two signal traces typically being opposite polarities of a differential signal pair. The support layer between the two signal traces is windowed, and the two traces are physically separated by a distance that equals the nominal thickness of the support layer plus the thicknesses of the top and bottom dielectric layers that separate the signal traces from the support layer. The physical separation combined with the windowing reduces the impedance and increases the bandwidth of the differential pair. The impedance can be controlled by the percentage of windowing in the support layer.

摘要翻译： 用于盘驱动器悬架的电路具有通常不锈钢的接地支撑层上方的第一信号迹线，以及在支撑层下方的第二信号迹线，两个信号迹线通常与差分信号对的极性相反。 两个信号迹线之间的支撑层被窗口化，并且两条迹线在物理上分开距离，该距离等于支撑层的标称厚度加上将信号迹线与支撑层分开的顶部和底部介电层的厚度。 与窗口结合的物理分离降低了阻抗并增加了差分对的带宽。 阻抗可以通过支撑层中窗口的百分比来控制。