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    Method to Reduce Baseline Shift for a SOT Differential Reader
    47.
    发明申请
    Method to Reduce Baseline Shift for a SOT Differential Reader 有权

    公开(公告)号：US20220013139A1

    公开(公告)日：2022-01-13

    申请号：US17029826

    申请日：2020-09-23

    Applicant: Western Digital Technologies, Inc.

    Inventor： Quang LE ,  Xiaoyong LIU ,  Zhigang BAI ,  Zhanjie LI ,  Kuok San HO ,  Hisashi TAKANO

    IPC: G11B5/37 ,  G11B5/11 ,  G11B5/23

    Abstract: The present disclosure generally relates to spin-orbital torque (SOT) differential reader designs. The SOT differential reader is a multi-terminal device that comprises a first shield, a first spin hall layer, a first free layer, a gap layer, a second spin hall layer, a second free layer, and a second shield. The gap layer functions as an electrode and is disposed between the first spin hall layer and the second spin hall layer. Electrical lead connections are located about the first spin hall layer, the second spin hall layer, the gap layer, the first shield, and/or the second shield. The electrical lead connections facilitate the flow of current and/or voltage from a negative lead to a positive lead. The positioning of the electrical lead connections and the positioning of the SOT differential layers improves reader resolution without decreasing the shield-to-shield spacing (i.e., read-gap).

    OPTICAL DEVICES FOR INDEPENDENT MOVEMENT CONTROL OF LENSES AND IMAGE SENSORS IN CAMERA SYSTEMS
    48.
    发明申请
    OPTICAL DEVICES FOR INDEPENDENT MOVEMENT CONTROL OF LENSES AND IMAGE SENSORS IN CAMERA SYSTEMS 有权

    公开(公告)号：US20210409601A1

    公开(公告)日：2021-12-30

    申请号：US16915730

    申请日：2020-06-29

    Applicant: Western Digital Technologies, Inc.

    Inventor： Quang LE ,  Zhigang BAI ,  Xiaoyong LIU ,  Zhanjie LI ,  Kuok San HO ,  Rajeev NAGABHIRAVA

    IPC: H04N5/232 ,  H04N5/225 ,  G03B13/36 ,  G03B3/10

    Abstract: Aspects of the present disclosure relate to optical devices and related methods that facilitate independent control of movement of lenses and image sensors in camera systems. In one example, an image sensor is movable independently of and relative to a lens, and the lens is movable independently of the image sensor. In one example, an optical device includes a lens, and an image sensor disposed below the lens. The image sensor is movable relative to the lens. The optical device includes a plurality of magnets disposed about the lens, a plurality of vertical coil structures coiled in one or more vertical planes, and one or more horizontal coil structures coiled in one or more horizontal planes. The plurality of vertical coil structures are configured to, when powered, move the image sensor relative to the lens. The one or more horizontal coil structures are configured to, when powered, move the lens.

    MAMR WRITE HEAD WITH THERMAL DISSIPATION CONDUCTIVE GUIDE
    50.
    发明申请
    MAMR WRITE HEAD WITH THERMAL DISSIPATION CONDUCTIVE GUIDE 审中-公开

    公开(公告)号：US20200227075A1

    公开(公告)日：2020-07-16

    申请号：US16828901

    申请日：2020-03-24

    Applicant: Western Digital Technologies, Inc.

    Inventor： Quang LE ,  Hongquan JIANG ,  Ning SHI ,  Alexander M. ZELTSER

    IPC: G11B5/31 ,  G11B5/66 ,  G11B5/73

    Abstract: The present disclosure generally relates to data storage devices, and more specifically, to a magnetic media drive employing a magnetic recording head. The head includes a trailing shield, a main pole, a MAMR stack disposed between the trailing shield and the main pole, side shields surrounding at least a portion of the main pole, and a structure disposed between the side shields and the main pole at a media facing surface (MFS). The structure is fabricated from a material that is thermally conductive and electrically insulating/dissipative. The material has a thermal conductivity of at least 50 W/(m*K) and an electrical resistivity of at least 105 Ω*m. The structure helps dissipate joule heating generated from either the main pole or the MAMR stack into surrounding area without electrical shunting, leading to reduced heating or break-down induced failures.

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