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公开(公告)号：US11976948B2
公开(公告)日：2024-05-07
申请号：US17222532
申请日：2021-04-05
IPC分类号： G01D5/14
CPC分类号： G01D5/145
摘要： An angle detection apparatus includes a magnetic sensing element, a magnetic field generator, and a yoke. The magnetic field generator is rotatable around a rotation axis with respect to the magnetic sensing element and generates a magnetic field. The yoke is disposed in a magnetic-field influence region and is rotatable together with the magnetic field generator. The magnetic-field influence region is a region that lies between the magnetic field generator and the magnetic sensing element in a rotation axis direction along the rotation axis, and that is to be influenced by the magnetic field.
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公开(公告)号：US11626133B1
公开(公告)日：2023-04-11
申请号：US17709402
申请日：2022-03-30
发明人： Ka Yip Wong , Chi Hung Yuen , Ryo Hosoi , Seiichi Takayama
摘要： A method of manufacturing a head gimbal assembly includes a head connecting step which a thermally assisted magnetic head is connected to a suspension. The head connecting step includes a solder ball arrangement step which a solder ball is arranged so that a laser diode of the thermally assisted magnetic head is connected to a flexure of the suspension, in an assembly structure which a slider of the thermally assisted magnetic head is adhered to the suspension. The solder ball arrangement step is performed using a connecting ball, as the solder ball, having a size smaller than a wiring gap between an electrode surface of the laser diode and the flexure, and being in melted-particle condition.
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公开(公告)号：US11411162B2
公开(公告)日：2022-08-09
申请号：US16503494
申请日：2019-07-04
发明人： Wei Xiong , Atsushi Iijima
IPC分类号： H01L41/047 , H01L41/09 , H01L41/18 , H01L41/316 , G11B5/48
摘要： A thin-film piezoelectric-material element includes a laminated structure part having a lower electrode film, a piezoelectric-material film laminated on the lower electrode film and an upper electrode film laminated on the piezoelectric-material film, a lower piezoelectric-material protective-film being formed with alloy material, and an upper piezoelectric-material protective-film being formed with alloy material. The piezoelectric-material film includes a size larger than the upper electrode film, a riser end-surface and step-surface formed on a top-surface of the upper electrode film side. The riser end-surface connects smoothly with a peripheral end-surface of the upper electrode film and vertically intersects with the top-surface. The step-surface intersects vertically with the riser end-surface. The lower piezoelectric-material protective-film, and the upper piezoelectric-material protective-film are formed with alloy material including Fe as main ingredient and having Co and Mo, by Ion beam deposition.
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公开(公告)号：US11347075B2
公开(公告)日：2022-05-31
申请号：US16731651
申请日：2019-12-31
发明人： Xianwen Feng , Ying Xiao
摘要： The present invention relates to the field of camera shake reduction technology and discloses a suspension assembly of OIS, which comprises a printed circuit board and a spring plate movably disposed on the printed circuit board, wherein the printed circuit board is electrically connected with the spring plate, the printed circuit board comprises a substrate plate and a bend portion extending downwards along any side edge of the substrate plate, a support component is attached to a bottom surface of the substrate plate, a plurality of conductive terminals are arranged on an outside surface of the bend portion, a plurality of reinforce components are arranged on an inside surface of the bend portion and corresponding to the plurality of conductive terminals one to one, and the plurality of reinforce components are placed at intervals and do not contact with each other.
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公开(公告)号：US11232812B1
公开(公告)日：2022-01-25
申请号：US17178978
申请日：2021-02-18
发明人： Guoqiang Zheng , Ellis Cha
摘要： A slider-mounted read/write transducer for a hard disk drive (HDD) has a topology that mitigates attraction and accumulation of lubricant and hydrocarbons during the HDD operation. The slider topology may include a pattern of cavities and channels symmetrically disposed about a central longitudinal axis. The slider may also have a transverse channel extending perpendicularly inward from an opening in each side edge of the slider to intersect a channel that extends longitudinally along a middle axis towards a leading-edge pad in which a read/write transducer is embedded. The ends of the transverse channel open into an air-carrying groove extending vertically upward in the side of the slider in which a side flow blocker (SFB) restricts the air flow into the channel portion.
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公开(公告)号：US20220003573A1
公开(公告)日：2022-01-06
申请号：US17222532
申请日：2021-04-05
IPC分类号： G01D5/14
摘要： An angle detection apparatus includes a magnetic sensing element, a magnetic field generator, and a yoke. The magnetic field generator is rotatable around a rotation axis with respect to the magnetic sensing element and generates a magnetic field. The yoke is disposed in a magnetic-field influence region and is rotatable together with the magnetic field generator. The magnetic-field influence region is a region that lies between the magnetic field generator and the magnetic sensing element in a rotation axis direction along the rotation axis, and that is to be influenced by the magnetic field.
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公开(公告)号：US10863282B2
公开(公告)日：2020-12-08
申请号：US16262908
申请日：2019-01-30
发明人： Koichi Shiozawa , Masashi Shiraishi , Jumpei Tsuchiya , Lik Hang Ken Wan , Toyotaka Kobayashi , Hironobu Hayashi
摘要： A MEMS package has a MEMS chip, a package substrate which the MEMS chip is adhered, a chip-cover which wraps the MEMS chip, and a cover-supporting part which supports the chip-cover from the inside. In the MEMS package, the chip-cover is supported by the cover-supporting part to form a back chamber, surrounded by the chip-cover and the package substrate.
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公开(公告)号：US10679653B1
公开(公告)日：2020-06-09
申请号：US16296366
申请日：2019-03-08
发明人： Qinghua Zeng , Siu Yin Ngan , Soramany Ka , Ellis Cha
摘要： A method of operating a HDD having a read/write head configured for Perpendicular Magnetic Recording (PMR) and configured for use in Thermally Assisted Magnetic Recording (TAMR). By using selected settings of a power ratio (PR) value to ensure that accurate fly height (FH) measurements of head-disk interference (HDI) can be taken during write touchdowns (TDs), head damage can be eliminated during HDI events. Under normal operating conditions the PMR head develops a sharp protrusion due to heating from the TAMR apparatus as well as the write current and read and write heaters. The sharp protrusion is prone to striking the disk surface, instead of the shields doing so. The shields would be more capable of absorbing the HDI, which would allow the HDI sensors (HDIs) to provide a more sensitive reading of the HDI which would prevent head wear caused by the sharp protrusion. By adjusting the power ratio (PR) to be at least the turning point (TP) value, the write shield will approach the disk surface before the sharp protrusion.
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9.发明授权公开(公告)号：US10510371B1
公开(公告)日：2019-12-17
申请号：US16282383
申请日：2019-02-22
发明人： Ryo Hosoi , Takashi Honda , Seiichi Takayama
IPC分类号： G11B11/105 , G11B13/08 , G11B5/00 , G11B5/31 , G11B5/60
摘要： A light source-unit comprises a laser diode, a sub-mount which the laser diode is joined, and a heater which is joined on a joint surface of the sub-mount. The sub-mount comprises a pair of barrier-members. The barrier-members are formed with lower thermal conductivity material which thermal conductivity is lower than joining metal which is used for joining the laser diode and the sub-mount. The barrier-members are formed on the joint surface so as to sandwich the heater.
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公开(公告)号：US10205371B2
公开(公告)日：2019-02-12
申请号：US15082228
申请日：2016-03-28
发明人： Sidney Chou , Yiu Sing Ho , Kam Fung Yip , Wen Ju Yang , Hai Yang Wu , Shou Sheng Gao , Yong Bing Hu , Guo Hong Lu
IPC分类号： H02K41/035 , G02B7/08
摘要： A voice coil motor includes a housing having a cavity; a movable assembly received in the cavity; a fixing assembly configured outside of the movable assembly; and a first spring plate and a second spring plate configured at an upper surface and a lower surface of the movable assembly respectively. The fixing assembly comprises at least two magnetic elements connected with the first spring plate and a spacer member configured on the second spring plate to connect the second spring plate to the magnetic elements or the housing. The voice coil motor is served as an actuator of electronic products such as digital cameras, mobile phones, and digital cameras, which has thin thickness, good performance and strong applicability.
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