公开(公告)号：US09679593B2

公开(公告)日：2017-06-13

申请号：US14860921

申请日：2015-09-22

Applicant: Seagate Technology LLC

Inventor： Gary Berscheit ,  Jackson Brandts

IPC: G11B5/48

CPC classification number: G11B5/4846 ,  G11B5/483 ,  G11B5/4833 ,  G11B5/486

Abstract: Disk drives including head suspensions within dual stage actuation systems have improved electrical connectivity between electrical connection pads from flexible circuits as are applied to head suspension assemblies with piezoelectric microactuators as also provided to head suspension assemblies. A more robust electrical connection provides for better control of microactuator actuation for fine movements and positioning of magnetic read/write heads relative to disk data tracks as part of dual stage actuated suspension systems. Electrical connections utilize conductive epoxy for physically and electrically connecting electrically conductive trace connection pads with one or more surfaces of piezoelectric microactuators. Electrical connections include better conductivity by utilizing plural surface portions of electrical connection pads. The result is a more robust and predictable performance for high data resolution within disk drives.

公开(公告)号：US10957350B1

公开(公告)日：2021-03-23

申请号：US16887447

申请日：2020-05-29

Applicant: Seagate Technology LLC

Inventor： Rohit Deokar ,  Razman Zambri ,  Gary Berscheit

IPC: G11B5/596 ,  G11B5/48

Abstract: A head gimbal assembly for supporting a disk drive includes a slider, a load beam, a ring gimbal affixed to the load beam, a plurality of microactuators, and a flexure. The flexure includes a first end extending along the load beam through a center region of a longitudinal axis of the head gimbal assembly and second end that includes a plurality of bond pads electrically coupled to the slider. The flexure includes a plurality of support features. Each support feature of the plurality of support features spans a respective microactuator of the plurality of microactuators. Each support feature includes a support protrusion and a support base. Each support protrusion is coupled to the ring gimbal at a distal side of the respective microactuator and each support base is coupled to the flex circuit on a proximal side of the respective microactuator.

公开(公告)号：US20160086625A1

公开(公告)日：2016-03-24

申请号：US14860921

申请日：2015-09-22

Applicant: Seagate Technology LLC

Inventor： Gary Berscheit ,  Jackson Brandts

IPC: G11B5/48

CPC classification number: G11B5/4846 ,  G11B5/483 ,  G11B5/4833 ,  G11B5/486

Abstract: Disk drives including head suspensions within dual stage actuation systems have improved electrical connectivity between electrical connection pads from flexible circuits as are applied to head suspension assemblies with piezoelectric microactuators as also provided to head suspension assemblies. A more robust electrical connection provides for better control of microactuator actuation for fine movements and positioning of magnetic read/write heads relative to disk data tracks as part of dual stage actuated suspension systems. Electrical connections utilize conductive epoxy for physically and electrically connecting electrically conductive trace connection pads with one or more surfaces of piezoelectric microactuators. Electrical connections include better conductivity by utilizing plural surface portions of electrical connection pads. The result is a more robust and predictable performance for high data resolution within disk drives.

Abstract translation: 包括双级驱动系统中的磁头悬架的磁盘驱动器具有改善的电连接性，其中柔性电路的电连接焊盘与应用于具有压电微致动器的磁头悬架组件一样，也提供给磁头悬架组件。 更坚固的电气连接提供了更好的控制微致动器致动，用于精细移动和磁读/写头相对于作为双级致动悬架系统的一部分的磁盘数据轨道的定位。 电气连接使用导电环氧树脂来将导电迹线连接焊盘与压电微致动器的一个或多个表面物理和电连接。 电连接通过利用电连接焊盘的多个表面部分包括更好的导电性。 结果是在磁盘驱动器中高数据分辨率的更强大和可预测的性能。