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公开(公告)号：US20210035603A1
公开(公告)日：2021-02-04
申请号：US17073578
申请日：2020-10-19
发明人： Ben Ng Kwun Pan , Ellis Cha
摘要： A slider design for a hard disk drive (HDD) features a shallow cavity adjacent to a leading edge that has patterns of sub-cavities of various shapes etched into its base to reduce its original surface area. The presence of these patterns of sub-cavities significantly reduces the probability that the slider will capture particles on the surface of a rotating disk and thereby reduces the corresponding probability of surface scratches that such captured particles inevitably produce.
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公开(公告)号：US10897003B2
公开(公告)日：2021-01-19
申请号：US16502213
申请日：2019-07-03
申请人： NGK Insulators, Ltd.
发明人： Masayuki Uetani
IPC分类号： G11C11/00 , H01L41/047 , G11B21/21 , H01L41/09 , H01L41/083
摘要： An opposite-side dielectric ceramic layer is in contact with a first opposite-surface electrode layer and a second opposite-surface electrode layer. A mounting-side dielectric ceramic layer is in contact with a first mounting-surface electrode layer and a second mounting-surface electrode layer. A mounting-side inner electrode layer is separated from the first mounting-surface electrode layer and the second mounting-surface electrode layer by the mounting-side dielectric ceramic layer, disposed on the mounting-side dielectric ceramic layer, extending from a first side-surface electrode layer, and separated from a second side-surface electrode layer. In a cross-sectional view including a lamination direction and a length direction, a position in which the second mounting-surface electrode layer has a maximum thickness is shifted toward a second side surface in the length direction with respect to a position in which the second opposite-surface electrode layer has a maximum thickness.
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公开(公告)号：US10796721B1
公开(公告)日：2020-10-06
申请号：US16379910
申请日：2019-04-10
发明人： Abhik Rakshit , Jiaxi Lu
摘要： A data storage device may be configured with a transducing head mounted to a slider. The slider may be suspended above a magnetic data storage medium and have a variable depth region, central rail wall, first wall, and trailing edge wall. The variable depth region continuously contacting a central rail wall from a first wall to a trailing edge wall.
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公开(公告)号：US10748576B2
公开(公告)日：2020-08-18
申请号：US16055256
申请日：2018-08-06
摘要： According to one embodiment, a head gimbal assembly includes a suspension and a magnetic head supported by the suspension via a gimbal portion. The magnetic head includes a slider and a head portion provided in the slider. The slider includes an air bearing surface, a pair of side surfaces, a leading-side end surface, and a trailing-side end surface. The slider includes a deep groove which is formed between the leading-side step portion and the trailing-side step portion and is open to the air bearing surface and the pair of side surfaces, and a pair of partition walls which extends from the trailing-side step portion toward the leading-side step portion along the pair of side surfaces to close at least a portion of a side surface opening of the deep groove.
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公开(公告)号：US10566016B2
公开(公告)日：2020-02-18
申请号：US16114601
申请日：2018-08-28
申请人： NHK SPRING CO., LTD.
发明人： Yukie Yamada , Tetsuya Ueda
摘要： A flexure includes a metal base, a circuit member, and an actuator. The circuit member includes a base insulating layer, a conductor layer, and a cover insulating layer. The conductor layer includes a second pad, and a reference hole, which is an example of a portion to be protected, in a tongue portion. A second end portion of the actuator is fixed to the second pad via an adhesive. The circuit member includes a wall portion. The wall portion is formed between the second pad and the reference hole. A height of the wall portion is greater than a height of the second pad.
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公开(公告)号：US20200020844A1
公开(公告)日：2020-01-16
申请号：US16502213
申请日：2019-07-03
申请人： NGK Insulators, Ltd.
发明人： Masayuki Uetani
IPC分类号： H01L41/047 , H01L41/083 , H01L41/09 , G11B21/21
摘要： An opposite-side dielectric ceramic layer is in contact with a first opposite-surface electrode layer and a second opposite-surface electrode layer. A mounting-side dielectric ceramic layer is in contact with a first mounting-surface electrode layer and a second mounting-surface electrode layer. A mounting-side inner electrode layer is separated from the first mounting-surface electrode layer and the second mounting-surface electrode layer by the mounting-side dielectric ceramic layer, disposed on the mounting-side dielectric ceramic layer, extending from a first side-surface electrode layer, and separated from a second side-surface electrode layer. In a cross-sectional view including a lamination direction and a length direction, a position in which the second mounting-surface electrode layer has a maximum thickness is shifted toward a second side surface in the length direction with respect to a position in which the second opposite-surface electrode layer has a maximum thickness.
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公开(公告)号：US20190259420A1
公开(公告)日：2019-08-22
申请号：US16055459
申请日：2018-08-06
发明人： Kazuhiro Furutani , Toru Watanabe , Masami Yamane , Kan Takahashi
摘要： According to one embodiment, a head gimbal assembly includes a suspension and a magnetic head supported by the suspension via a gimbal portion. The magnetic head includes a slider and a head portion in the slider. The slider includes an air bearing surface, a pair of side surfaces, a leading-side end surface, and a trailing-side end surface. The slider includes a deep groove which is formed between a leading-side step portion and a trailing-side step portion and is open to the air bearing surface and the pair of side surfaces, and at least a pair of capturing grooves which is formed on a bottom surface of the deep groove. The capturing grooves are provided along the pair of side surface and are placed with a gap from the pair of side surfaces.
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公开(公告)号：US09928873B1
公开(公告)日：2018-03-27
申请号：US15638839
申请日：2017-06-30
CPC分类号： G11B21/21 , G11B5/3106 , G11B5/40 , G11B5/6064 , G11B5/607 , G11B5/6076 , G11B5/6082 , G11B7/122 , G11B23/507 , G11B2005/0016
摘要： An apparatus comprises a slider configured for writing data to and reading data from a magnetic recording medium and for heat-assisted magnetic recording. The slider comprises a heater configured to receive an AC signal and to cause oscillation in a spacing between the slider and the medium, and a contact sensor situated on the slider and configured to produce a DC response signal. A detector is coupled to the slider and configured to measure an amplitude of a spike in the DC response signal, calculate a ratio between the spike amplitude and an amplitude of the DC response signal, and detect contact between the slider and the medium in response to the ratio exceeding a predetermined threshold.
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公开(公告)号：US09865286B2
公开(公告)日：2018-01-09
申请号：US15169589
申请日：2016-05-31
CPC分类号： G11B21/21 , G11B5/3166 , G11B5/3169
摘要： A magnetic tape recording module having electrical lapping guides located within and adjacent to an array of magnetic read/write elements. Electrical leads connected with the electrical lapping guides are buried deep within the head build, close to the substrate so that they can pass beneath the electrical leads of the read/write elements without any capacitive coupling between the electrical lapping guide leads and the read/write element leads. The presence of the electrical lapping guides within and adjacent to the read/write element leads provides much more accurate control of read/write element stripe height during lapping.
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公开(公告)号：US09666229B1
公开(公告)日：2017-05-30
申请号：US15194833
申请日：2016-06-28
申请人： L2 Drive LLC
发明人： Karim Kaddeche
CPC分类号： G11B21/21 , G11B5/4833 , G11B5/58 , G11B5/6017 , G11B5/6058
摘要： The invention generally relates to a system for achieving reduced head-media spacing (HMS) in a hard disk drive (HDD) by providing active control over the positioning of a read/write head relative to a rotating magnetic data recording and reading surface of a disk. The system is configured to monitor and adjust positioning of the read/write head in real, or near-real time during disk rotation to maintain the HMS between a magnetic transducer of the read/write head and the disk surface within a defined range, generally between 1.0 nm and 10.0 nm, and, in some embodiments, approximately 4.3 nm. The system replaces the conventional an air bearing surface (ABS) design with a fully active suspension to maintain the head flying height within the desired range. The system further allows for each of the magnetic transducer and disk surface to be to be devoid of any overcoat or lubricant layers.
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