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1.发明授权Light source unit, heat-assisted magnetic recording head using the same, and light source for light source unit 有权光源单元，使用其的热辅助磁记录头，以及光源单元的光源公开(公告)号：US09489972B2
公开(公告)日：2016-11-08
申请号：US14657436
申请日：2015-03-13
发明人： Takashi Honda , Seiichi Takayama , Ryuji Fujii , Koji Shimazawa , Tsuguki Noma , Yoshiteru Nagai
CPC分类号： G11B5/4866 , G01J1/4257 , G01J1/44 , G11B5/6088 , G11B2005/0021
摘要： A light source unit has a substrate, a light source that is mounted to the substrate. The light source includes; a first emission part that emits a forward light, the forward light being a laser light in an oscillation state; a second emission part that is located on a side opposite to the first emission part and that emits a rearward light, the rearward light being a laser light in an oscillation state; and a light leakage part located at a position different from the first emission part and the second emission part. The light source further includes a photodetector that is provided on the substrate, wherein the photodetector has a light receiving surface for detecting a leakage light that leaks from the light leakage part.
摘要翻译： 光源单元具有基板，安装在基板上的光源。 光源包括 第一发射部分，其发射向前的光，所述前向光是处于振荡状态的激光; 第二发射部分，其位于与第一发射部分相对的一侧，并且发射向后的光，所述后向光是处于振荡状态的激光; 以及位于与第一发射部分和第二发射部分不同的位置的漏光部分。 光源还包括设置在基板上的光电检测器，其中光电检测器具有用于检测从漏光部分泄漏的泄漏光的光接收表面。
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2.发明授权Method for manufacturing an electronic device including a light absorption layer 有权包括光吸收层的电子器件的制造方法公开(公告)号：US08687469B1
公开(公告)日：2014-04-01
申请号：US13708593
申请日：2012-12-07
发明人： Seiichi Takayama , Yasuhiro Ito , Nobuyuki Mori , Koji Shimazawa , Kazuaki Takanuki , Youichi Ando
IPC分类号： G11B11/00
CPC分类号： G11B5/105 , G11B2005/0021
摘要： A method of manufacturing an electronic device includes a first bonding step of bonding an electronic component and a first member together via a first bonding layer and a second bonding step of bonding the first member and a second member together via a second bonding layer after the first bonding step. The second bonding layer includes a bonding material layer made of a bonding material. In the second bonding step, with the bonding material interposed between the first and second members before being bonded together, the bonding material is heated and melted using light traveling through the first member. The first member is made of Si. The light has a wavelength in the range of 1100 to 15000 nm.
摘要翻译： 一种制造电子器件的方法包括：第一接合步骤，通过第一接合层将电子部件和第一部件接合在一起;以及第二接合步骤，通过第二接合层在第一接合层之后将第一部件和第二部件接合在一起 结合步骤。 第二接合层包括由接合材料制成的接合材料层。 在第二接合步骤中，在接合材料在被接合在一起之前介于第一和第二构件之间的接合材料中，使用通过第一构件的光进行接合材料的加热和熔化。 第一个成员是由Si制成。 光的波长在1100〜15000nm的范围内。
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公开(公告)号：US09659582B2
公开(公告)日：2017-05-23
申请号：US13750499
申请日：2013-01-25
发明人： Seiichi Takayama , Yasuhiro Ito , Nobuyuki Mori , Koji Shimazawa , Kazuaki Takanuki , Youichi Ando
CPC分类号： G11B5/105 , G11B5/3166 , G11B5/455 , G11B5/6088 , G11B2005/0021 , Y10T29/49036
摘要： A method of manufacturing an electronic device includes a positioning step of positioning a first member supporting a laser diode with respect to a second member having a waveguide, a bonding step of bonding the first member and the second member together, and a checking step of checking the accuracy of positioning of the first member with respect to the second member. In the positioning step, the laser diode is energized to allow laser light to be emitted, and the laser light is allowed to be incident on the incidence end of the waveguide. In the bonding step, a bonding material is melted by irradiating the first member with heating light while the laser diode is not energized. In the checking step, the laser diode is energized again.
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4.发明授权公开(公告)号：US10650856B1
公开(公告)日：2020-05-12
申请号：US16367224
申请日：2019-03-27
发明人： Ryo Hosoi , Seiichi Takayama
摘要： A thermally assisted magnetic head including a slider and a light source-unit. The slider includes a slider substrate and a magnetic head part. The light source-unit includes a laser diode and a sub-mount. The magnetic head part includes a medium-opposing surface, a light source-opposing surface and a waveguide which guides laser light from the light source-opposing surface to the medium-opposing surface. The thermally assisted magnetic head includes an optimal-structure which the following optimizing conditional expression, concerning an inlet-optical path length L1 of an inlet-interval of the waveguide, and an outlet-optical path length L2 of an outlet-interval, is satisfied, m1×L1=L2 (m1 is a natural number).
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公开(公告)号：US10061084B1
公开(公告)日：2018-08-28
申请号：US15445258
申请日：2017-02-28
发明人： Seiichi Takayama , Kiyohiko Abe , Ryuji Fujii , Takashi Honda , Shi Xiong Chen , Osamu Harakawa
摘要： A coupling structure of optical components has a first optical component, a second optical component and a coupling solder layer. The first optical component has a lensed fiber, a first holder holding the lensed fiber and a first metal layer formed on a first connecting end face of the first holder. The second optical component has a waveguide, a second holder holding the waveguide and a second metal layer formed on a second connecting end face of the second holder. The coupling solder layer is in direct contact with both of the first metal layer and the second metal layer, and formed with solder.
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6.发明授权公开(公告)号：US09163939B2
公开(公告)日：2015-10-20
申请号：US14193337
申请日：2014-02-28
发明人： Seiichi Takayama , Ryuji Fujii , Takashi Honda , Osamu Harakawa , Tadatoshi Koba
CPC分类号： G01B11/272 , G11B5/127 , G11B5/1272 , G11B5/314 , G11B5/3173 , G11B5/4866 , G11B5/6088 , G11B9/12 , G11B13/08 , G11B2005/0021 , Y10T29/49036
摘要： A method of manufacturing a thermally-assisted magnetic head includes providing a light source unit including a laser diode; providing a reflection board, and a photo detector; driving the laser diode to emit a light beam towards the reflection board; performing an alignment between the light source unit and the thermally-assisted magnetic recording head section, based on a reflected light of the light beam reflected by the reflection board, then passed through the optical waveguide and finally detected by the photo detector obtaining the maximum power in a LED emission state of the laser diode; and bonding the light source unit to the slider after the alignment is completed. It improves alignment accuracy between a light source unit and a slider during a bonding process therebetween, prevents a laser diode of the light source unit instability, and improves performance of the thermally-assisted magnetic head finally.
摘要翻译： 制造热辅助磁头的方法包括提供包括激光二极管的光源单元; 提供反射板和光电检测器; 驱动激光二极管向反射板发射光束; 基于由反射板反射的光束的反射光，在光源单元和热辅助磁记录头部之间进行对准，然后通过光波导，最后通过光电检测器检测到获得最大功率 处于LED发射状态的激光二极管; 并且在对准完成之后将光源单元接合到滑块。 在它们之间的接合过程中，提高光源单元和滑块之间的对准精度，防止光源单元的激光二极管不稳定，并且最终提高热辅助磁头的性能。
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公开(公告)号：US10311903B2
公开(公告)日：2019-06-04
申请号：US15649961
申请日：2017-07-14
发明人： Seiichi Takayama , Takashi Honda , Ryuji Fujii , Ryo Hosoi , Kaichiu Cheung , Tsutomu Sasaki , Jingtao Lu , Fanglong Nie
摘要： A method of testing dynamic performances for a slider body of a thermally-assisted magnetic head includes: providing a slider body which is disconnected with a light source unit; removably mounting the slider body to a test head suspension assembly; keeping to provide a flat top beam to the slider body, the flat top beam being aligned with the optical waveguide, and a projection of an incident end of the optical waveguide being located within a light spot of the flat top beam; and testing the dynamic performance of the slider body. It can save the material cost and labor cost, and eliminate a precise optical alignment between an input light and an optical waveguide in the slider body to improve testing efficiency.
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8.发明授权公开(公告)号：US09437227B1
公开(公告)日：2016-09-06
申请号：US14870672
申请日：2015-09-30
发明人： Takashi Honda , Seiichi Takayama , Ryuji Fujii
CPC分类号： G11B5/4826 , G11B5/314 , G11B5/3173 , G11B5/4846 , G11B5/4853 , G11B5/6088 , G11B2005/0021
摘要： A thermally assisted magnetic recording head slider includes a light source unit having a light emitting element emitting laser light and a submount holding the light emitting element, and slider including a thin-film laminated part having a main magnetic pole layer, a near-field light generating element and an optical waveguide. A combination of the light emitting element and near-field light generating element is composed of a first pattern or second pattern. The light source unit is mounted on a light source placing surface so that a substrate surface of the light emitting element is orthogonal to a laminated surface of the thin-film laminated part. A plurality of electrode pads are formed on the outer end surface of the slider. The light source unit has a first element electrode and second element electrode. A first connecting wiring part and second connecting wiring part, which connected the first element electrode and second element electrode with a first electrode pad and second electrode pad, are formed on a light source placing surface.
摘要翻译： 热辅助磁记录头滑块包括具有发射激光的发光元件的光源单元和保持发光元件的基座，以及滑动器，其包括具有主磁极层的薄膜层叠部分，近场光 发光元件和光波导。 发光元件和近场光产生元件的组合由第一图案或第二图案组成。 光源单元安装在光源放置表面上，使得发光元件的基板表面与薄膜层叠部分的层叠表面正交。 在滑块的外端表面上形成多个电极焊盘。 光源单元具有第一元件电极和第二元件电极。 在第一电极焊盘和第二电极焊盘上形成有连接第一元件电极和第二元件电极的第一连接布线部分和第二连接布线部分在光源放置表面上。
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公开(公告)号：US08811130B1
公开(公告)日：2014-08-19
申请号：US14038160
申请日：2013-09-26
发明人： Seiichi Takayama , Ryuji Fujii , Osamu Harakawa , Hideki Tanzawa , Tadatoshi Koba , Takashi Honda
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： A method of manufacturing a thermally-assisted magnetic head includes aligning the light source unit to the thermally-assisted magnetic head section on the slider body; and performing a bonding between the unit substrate and the slider body with a bonding layer in between. And process of the bonding includes irradiating the bonding layer with a first laser shot, pausing for a time interval after the first laser shot, and then irradiating a second laser shot, wherein a first irradiating power of the first laser shot is weaker than a second irradiating power of the second laser shot, and a first irradiating time of the first laser shot is shorter than a second irradiating time of the second laser shot. The method can keep an accurate alignment of the unit substrate with respect to the slider after a bonding process and, in turns improve performance of the thermally-assisted magnetic head.
摘要翻译： 制造热辅助磁头的方法包括将光源单元与滑块体上的热辅助磁头部对准; 以及在所述单元基板和所述滑块体之间进行接合，其间具有接合层。 并且所述接合处理包括用第一激光射击照射所述接合层，在所述第一激光射击之后暂停一段时间间隔，然后照射第二激光照射，其中所述第一激光照射的第一照射光强弱于第二激光照射 所述第二激光照射的照射功率和所述第一激光照射的第一照射时间比所述第二激光照射的第二照射时间短。 该方法可以在接合过程之后保持单元基板相对于滑块的精确对准，并且进而改善热辅助磁头的性能。
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10.发明授权公开(公告)号：US12027179B1
公开(公告)日：2024-07-02
申请号：US18324695
申请日：2023-05-26
发明人： Seiichi Takayama , Ryuji Fujii , Yasutoshi Fujita , Ka Yip Wong , Chi Hung Yuen
IPC分类号： G11B11/105 , G11B5/48 , G11B13/08 , G11B5/00
CPC分类号： G11B13/08 , G11B2005/0021
摘要： A thermally assisted magnetic head includes a slider having a slider substrate and a magnetic head part, and a light source unit having a laser diode and a sub-mount. The magnetic head part includes a medium-opposite surface, a light source-opposite surface, and a slider-front end surface. The sub-mount includes a joined-end surface and a mount-front end surface, the laser diode includes an electrode surface and an LD-front end surface. The light source unit includes a shift joined structure which the laser diode is joined to a shift area of the joined-end surface, and the light source unit is mounted on the slider substrate so that the electrode surface intersects with a laminated surface of the magnetic head part. The shift area is set in a position which is shifted so that the LD-front end surface is away from the slider-front end surface than the mount-front end surface.
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