公开(公告)号：US08588040B1

公开(公告)日：2013-11-19

申请号：US13724283

申请日：2012-12-21

申请人： SAE Magnetics (H.K.) Ltd. ,  TDK Corporation

发明人： Yasutoshi Fujita ,  Ryuji Fujii ,  Hideki Tanzawa ,  Natsuo Nishijima ,  Tai Boon Lee ,  Jian Hui Huang ,  Huan Chao Liang ,  Koji Shimazawa ,  Kei Hirata ,  Daisuke Miyauchi

IPC分类号： G11B11/00

CPC分类号： G11B5/3173 ,  G11B5/102 ,  G11B5/314 ,  G11B2005/0021

摘要： A thermally assisted magnetic head slider includes an air bearing surface facing to a magnetic recording medium, a read portion, and a write portion including a write element, a waveguide for guiding light generated by the light source module, and a plasmon unit provided around the write portion and the waveguide. A first coat layer with a first thickness which has a first light absorption index is covered on an opposed-to-medium surface of the read portion, and a second coat layer with a second thickness which has a second light absorption index is covered on an opposed-to medium surface of the write portion, wherein the second thickness is larger than the first thickness, and the second light absorption index is smaller than the first light absorption index. The slider can protect the write portion and improve the reading performance of the read portion.

摘要翻译： 热辅助磁头滑动器包括面向磁记录介质的空气轴承表面，读取部分和包括写入元件的写入部分，用于引导由光源模块产生的光的波导和设置在该光学元件周围的等离子体激元单元 写部分和波导。 具有第一光吸收指数的第一厚度的第一涂层被覆盖在读取部分的相对中介表面上，并且具有第二光吸收指数的第二厚度的第二涂层被覆盖在 写入部分的相对中介表面，其中第二厚度大于第一厚度，第二光吸收指数小于第一光吸收指数。 滑块可以保护写入部分并提高读取部分的读取性能。

公开(公告)号：US08811130B1

公开(公告)日：2014-08-19

申请号：US14038160

申请日：2013-09-26

申请人： SAE Magnetics (H.K.) Ltd.

发明人： Seiichi Takayama ,  Ryuji Fujii ,  Osamu Harakawa ,  Hideki Tanzawa ,  Tadatoshi Koba ,  Takashi Honda

IPC分类号： G11B11/00 ,  G11B5/33 ,  G11B5/127

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。

公开(公告)号：US08743665B2

公开(公告)日：2014-06-03

申请号：US13904675

申请日：2013-05-29

申请人： SAE Magnetics (H.K.) Ltd.

发明人： Ryuji Fujii ,  Tai Boon Lee ,  Hideki Tanzawa ,  Yasuhiro Konakawa

IPC分类号： G11B11/00

CPC分类号： G11B13/04 ,  G11B5/102 ,  G11B2005/0021 ,  Y10T29/49032 ,  Y10T428/23 ,  Y10T428/24612 ,  Y10T428/24942

摘要： A manufacturing method of a light source chip for a thermally assisted head comprises steps of (a) providing a light source bar with a surface coating formed thereon; (b) forming several blind holes on the predetermined positions of the light source bar by etching, the blind hole having a top hollowed on the surface coating and a bottom hollowed on the light source bar, and the blind hole having a first biggest width at its top; (c) cutting the light source bar along every two adjacent blind holes by a cutting machine. The cutting machine has a cutting means with a second biggest width that is smaller than the first biggest width of the blind hole, thereby cutting down an individual light source chip without contacting the side edges of the blind hole. Thus a light source chip with a smooth edge and without cracks on the surface can be obtained; and the surface coating formed thereon is hard to be peeled off.

摘要翻译： 一种用于热辅助头的光源芯片的制造方法，包括以下步骤：（a）提供其上形成有表面涂层的光源棒; （b）通过蚀刻在光源棒的预定位置上形成若干个盲孔，盲孔具有在表面涂层上挖空的顶部和在光源棒上挖空的底部，盲孔具有第一最大宽度 其顶部 （c）通过切割机沿着每两个相邻的盲孔切割光源棒。 切割机具有第二最大宽度小于盲孔的第一最大宽度的切割装置，从而在不接触盲孔的侧边缘的情况下切割单独的光源芯片。 因此，可以获得具有光滑边缘并且在表面上没有裂纹的光源芯片; 并且其上形成的表面涂层难以剥离。

公开(公告)号：US08902546B1

公开(公告)日：2014-12-02

申请号：US13967669

申请日：2013-08-15

申请人： SAE Magnetics (H.K.) Ltd.

发明人： Seiichi Takayama ,  Hideki Tanzawa ,  Osamu Harakawa ,  Takashi Honda ,  Ryuji Fujii

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

摘要： A head stack assembly includes a mounting base, a plurality of drive arms connected with the mounting base, and multiple pairs of head gimbal assemblies connected with the drive arms. Each head gimbal assembly includes a thermal assisted magnetic head, the thermal assisted magnetic head has an air bearing surface, a bottom surface opposite to the air bearing surface, and a laser diode module mounted on the bottom surface and adapted to emit a downward laser light to a write element of the thermal assisted magnetic head and an upward laser light, wherein a light shielding structure is provided to prevent the upward laser light emitting to other laser diode modules to generate light coupling, thereby improving thermal stability of the thermal assisted magnetic head.

摘要翻译： 头堆叠组件包括安装基座，与安装基座连接的多个驱动臂以及与驱动臂连接的多对头部万向架组件。 每个头万向架组件包括热辅助磁头，热辅助磁头具有空气支承表面，与空气支承表面相对的底面，以及安装在底表面上并适于发射向下激光的激光二极管模块 涉及热辅助磁头的写入元件和向上的激光，其中提供遮光结构以防止向上激光发射到其它激光二极管模块以产生光耦合，从而提高热辅助磁头的热稳定性 。

公开(公告)号：US08861318B1

公开(公告)日：2014-10-14

申请号：US14097684

申请日：2013-12-05

申请人： SAE Magnetics (H.K.) Ltd. ,  TDK Corporation

发明人： Tai Boon Lee ,  Bing Ma ,  Wei Liang Chen ,  Hong Tao Ma ,  Yasutoshi Fujita ,  Hideki Tanzawa ,  Ryuji Fujii ,  Kei Hirata ,  Makoto Isogai ,  Takeshi Tsutsumi

IPC分类号： G11B11/24

CPC分类号： G11B5/6082 ,  G11B5/102 ,  G11B5/187 ,  G11B5/3106 ,  G11B2005/0021

摘要： A thermally assisted magnetic write head includes a waveguide having a first end surface included in an air bearing surface; a magnetic pole having a second end surface included in the air bearing surface; a plasmon generator having a third end surface included in the air bearing surface; a first protective film directly covering a part of the second end surface of the magnetic pole at least; and a second protective film directly covering the first end surface of the waveguide and the third end surface of the plasmon generator. The configuration can reduce recording density and improve thermal stability, furthermore increase the producing yield.

摘要翻译： 热辅助磁写头包括具有包括在空气轴承表面中的第一端面的波导; 具有包括在所述空气轴承表面中的第二端面的磁极; 等离子体发生器，其具有包括在所述空气轴承表面中的第三端面; 至少直接覆盖所述磁极的第二端面的一部分的第一保护膜; 以及直接覆盖波导的第一端面和等离子体激元发生器的第三端面的第二保护膜。 该结构可以降低记录密度并提高热稳定性，进一步提高产率。