专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明授权

US08125858B2 Heat-assisted magnetic recording head including plasmon generator 有权
标题翻译：热辅助磁记录头包括等离子体发生器
公开(公告)号：US08125858B2
公开(公告)日：2012-02-28
申请号：US12728890
申请日：2010-03-22
申请人： Shinji Hara , Tsutomu Chou , Kosuke Tanaka , Eiji Komura , Koji Shimazawa , Daisuke Miyauchi , Susumu Aoki , Takeshi Tsutsumi
发明人： Shinji Hara , Tsutomu Chou , Kosuke Tanaka , Eiji Komura , Koji Shimazawa , Daisuke Miyauchi , Susumu Aoki , Takeshi Tsutsumi
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/3163 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： A plasmon generator has an outer surface including a plasmon exciting part, and has a near-field light generating part located in a medium facing surface. The plasmon exciting part faces an evanescent light generating surface of a waveguide's core with a predetermined distance therebetween. The outer surface of the plasmon generator further includes first and second inclined surfaces that are each connected to the plasmon exciting part. The first and second inclined surfaces increase in distance from each other with increasing distance from the plasmon exciting part. The plasmon generator includes a shape changing portion where the angle of inclination of each of the first and second inclined surfaces with respect to the evanescent light generating surface increases continuously with decreasing distance to the medium facing surface.
摘要翻译：等离子体发生器具有包括等离子体激元部分的外表面，并且具有位于介质面对表面中的近场光产生部分。等离子激元激发部分面对波导芯的渐逝光产生表面，其间具有预定的距离。等离子体发生器的外表面还包括各自连接到等离子体激元部分的第一和第二倾斜表面。第一和第二倾斜表面随距离等离激子激发部分的距离增加而彼此间距离增加。等离子体发生器包括形状改变部分，其中第一和第二倾斜表面中的每一个相对于ev逝光产生表面的倾斜角度随着到介质面向表面的距离的减小而连续增加。

22. 发明授权

US08116034B2 Thermally assisted magnetic head having main pole arranged between near-field light-generating portions and manufacturing method of same 有权
标题翻译：具有设置在近场发光部之间的主极的热辅助磁头及其制造方法
公开(公告)号：US08116034B2
公开(公告)日：2012-02-14
申请号：US12204452
申请日：2008-09-04
申请人： Eiji Komura , Koji Shimazawa , Kosuke Tanaka , Seiichi Takayama , Hitoshi Hatate
发明人： Eiji Komura , Koji Shimazawa , Kosuke Tanaka , Seiichi Takayama , Hitoshi Hatate
IPC分类号： G11B5/02 , G11B5/127
CPC分类号： G11B5/314 , G11B2005/0021
摘要： When first and second near-field light-generating portions are irradiated with laser light or other energy rays, near-field light is generated at the tips of both the near-field light-generating portions. By means of the near-field light thus generated, a magnetic recording medium opposing the medium-opposing surface is heated, and the coercivity of the magnetic recording medium is lowered. Since at least a portion of the main magnetic pole is positioned within the spot region including the region between the first and second near-field light-generating portions, the tips of both the near-field light-generating portions and the main magnetic pole can be brought extremely close together, and high-density recording can be performed.
摘要翻译：当用激光或其他能量射线照射第一和第二近场光产生部分时，在近场光产生部分的尖端处产生近场光。通过这样产生的近场光，加热与介质相对表面相对的磁记录介质，并降低磁记录介质的矫顽力。由于主磁极的至少一部分位于包括第一和第二近场发光部之间的区域的光点区域内，因此近场发光部和主磁极两者的尖端被非常靠近在一起，并且可以执行高密度记录。

23. 发明授权

US08111591B2 Heat-assisted magnetic recording head having laser diode overlaping two recording wiring layers 有权
标题翻译：具有激光二极管的热辅助磁记录头与两个记录布线层重叠
公开(公告)号：US08111591B2
公开(公告)日：2012-02-07
申请号：US12458954
申请日：2009-07-28
申请人： Koji Shimazawa , Tomohito Mizuno , Eiji Komura
发明人： Koji Shimazawa , Tomohito Mizuno , Eiji Komura
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： A heat-assisted magnetic recording head includes a slider, and an edge-emitting laser diode fixed to the slider. The slider includes: a substrate; and an MR element, two reproduction wiring layers, a coil, two recording wiring layers, a magnetic pole, a near-field light generating element, and a waveguide that are stacked above the top surface of the substrate. The two reproduction wiring layers supply a sense current to the MR element. The two recording wiring layers supply a coil current to the coil, The laser diode has an emitting end face including an emission part for emitting laser light, and a bottom surface, The laser diode is arranged so that the bottom surface faces the top surface of the slider. As viewed from above, the laser diode does not overlap the two reproduction wiring layers but overlaps at least one of the two recording wiring layers.
摘要翻译：热辅助磁记录头包括滑块和固定到滑块的边缘发射激光二极管。滑块包括：基板; 以及层叠在基板的上表面上方的MR元件，两个再现布线层，线圈，两个记录布线层，磁极，近场光产生元件和波导。两个再现布线层向MR元件提供感测电流。两个记录布线层向线圈提供线圈电流。激光二极管具有包括用于发射激光的发射部分的发射端面和底表面。激光二极管被布置成使得底表面面向滑块。如上所述，激光二极管不与两个再现布线层重叠，而是与两个记录布线层中的至少一个重叠。

24. 发明申请

US20110205660A1 Spot size converter and thermal assist magnetic recording head therewith 有权
标题翻译：点尺寸转换器和热辅助磁记录头
公开(公告)号：US20110205660A1
公开(公告)日：2011-08-25
申请号：US12659094
申请日：2010-02-25
申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa , Seiichi Takayama
发明人： Eiji Komura , Tsutomu Chou , Koji Shimazawa , Seiichi Takayama
IPC分类号： G11B5/02 , G02B6/26 , G02B6/036
CPC分类号： G11B5/314 , B82Y20/00 , G02B6/1226 , G02B6/1228 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： A spot size converter according to the present invention is capable of shortening the waveguide length in the spot size converter and of promoting a size reduction of the optical waveguide itself because two cores having a taper portion are combined and those tapering angles are mutually aligned. Furthermore, spot size conversion efficiency is favorable even in a small size.
摘要翻译：根据本发明的点尺寸转换器能够缩短光斑尺寸转换器中的波导长度并且促进光波导本身的尺寸减小，因为具有锥形部分的两个芯体组合并且这些渐缩角度相互对准。此外，即使在小尺寸的情况下，光斑尺寸转换效率也是有利的。

25. 发明授权

US07948718B2 Magnetoresistive head having an insulating layer with a particular compressive stress 失效
标题翻译：具有具有特定压应力的绝缘层的磁阻头
公开(公告)号：US07948718B2
公开(公告)日：2011-05-24
申请号：US11078580
申请日：2005-03-14
申请人： Takahiko Machita , Koji Shimazawa
发明人： Takahiko Machita , Koji Shimazawa
IPC分类号： G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/399 , G11B2005/3996
摘要： An MR element incorporates: a nonmagnetic conductive layer having two surfaces facing toward opposite directions; a free layer disposed adjacent to one of the surfaces of the nonmagnetic conductive layer, wherein the direction of magnetization in the free layer changes in response to an external magnetic field; and a pinned layer disposed adjacent to the other of the surfaces of the nonmagnetic conductive layer, wherein the direction of magnetization in the pinned layer is fixed to the direction orthogonal to the air bearing surface. The MR element does not include any layer provided for fixing the direction of magnetization in the pinned layer. The pinned layer incorporates a ferromagnetic layer made of a ferromagnetic material having a positive magnetostriction constant. A bottom shield gap film and a top shield gap film disposed adjacent to the MR element each have a compressive stress of 600 MPa or greater.
摘要翻译： MR元件包括：具有朝向相反方向的两个表面的非磁性导电层; 邻近所述非磁性导电层的一个表面设置的自由层，其中所述自由层中的磁化方向响应于外部磁场而改变; 以及与非磁性导电层的另一个表面相邻设置的被钉扎层，其中被钉扎层中的磁化方向固定在与空气支承表面正交的方向上。 MR元件不包括用于固定钉扎层中的磁化方向的任何层。钉扎层包含由具有正磁致伸缩常数的铁磁材料制成的铁磁层。邻近MR元件设置的底部屏蔽间隙膜和顶部屏蔽间隙膜各自具有600MPa或更大的压缩应力。

26. 发明授权

US07940486B2 Thermally assisted magnetic head, head gimbal assembly, and hard disk drive 有权
标题翻译：热辅助磁头，磁头万向节组件和硬盘驱动器
公开(公告)号：US07940486B2
公开(公告)日：2011-05-10
申请号：US11892882
申请日：2007-08-28
申请人： Koji Shimazawa , Kosuke Tanaka , Takaaki Domon
发明人： Koji Shimazawa , Kosuke Tanaka , Takaaki Domon
IPC分类号： G11B11/105 , G11B11/10 , G11B5/02 , G11B7/135 , G11B7/125
CPC分类号： G11B5/02 , G11B5/314 , G11B2005/0005 , G11B2005/0021
摘要： A laser diode is fixed to a light source support substrate and a first surface of a slider substrate is fixed to a second surface of the light source support substrate; therefore, the slider substrate and the laser diode are kept in a fixed positional relation. Since the laser diode faces a light entrance face of a core, long-distance propagation of light as in the conventional technology does not occur, and light emitted from a light emitting element is guided well to a medium-facing surface while permitting some mounting error and coupling loss of light. A spot size w of a light intensity distribution along the X-axis in the XY plane including an incident-light centroid position on the light entrance face is set larger than a thickness of the core, whereby variation in incidence efficiency is well suppressed against positional deviation.
摘要翻译：激光二极管被固定到光源支撑基板上，并且滑块基板的第一表面固定到光源支撑基板的第二表面; 因此，滑块基板和激光二极管保持固定的位置关系。由于激光二极管面向芯的光入射面，因此不会像现有技术那样发生长距离传播光，并且从发光元件发出的光很好地被引导到面向中间的表面，同时允许一些安装误差和光耦合损耗。在包括光入射面上的入射光重心位置的XY平面中沿着X轴的光强度分布的光斑尺寸w被设定为大于芯的厚度，由此良好地抑制了位置上的入射效率的变化偏差。

27. 发明授权

US07936531B2 Thermally assisted magnetic head having an asymmetric plasmon antenna and manufacturing method thereof 有权
标题翻译：具有不对称等离子体激元天线的热辅助磁头及其制造方法
公开(公告)号：US07936531B2
公开(公告)日：2011-05-03
申请号：US12267126
申请日：2008-11-07
申请人： Satoshi Tomikawa , Seiichi Takayama , Koji Shimazawa
发明人： Satoshi Tomikawa , Seiichi Takayama , Koji Shimazawa
IPC分类号： G11B5/02 , G11B11/00
CPC分类号： G11B5/314 , G11B5/3163 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： The thermally assisted magnetic head according to the present invention comprises a medium-facing surface, a main magnetic pole provided on the medium-facing surface, and a plasmon antenna provided on the medium-facing surface, in the vicinity of the main magnetic pole. The shape of the plasmon antenna, as viewed from a direction perpendicular to the medium-facing surface, is a triangle having first, second and third corners, the plasmon antenna being shaped as a flat plate the thickness direction of which is perpendicular to the medium-facing surface. The distance from the first corner to the main magnetic pole is shorter than the distance from the second corner to the main magnetic pole and the distance from the third corner to the main magnetic pole. The second corner and the third corner are rounded.
摘要翻译：根据本发明的热辅助磁头包括介于中间的表面，设置在介质中的表面上的主磁极和设置在主磁极附近的面向中的表面上的等离子体激元。等离子体激元天线的形状，从垂直于介质相对表面的方向观察，是具有第一，第二和第三角的三角形，等离子体激元天线成形为平板，其厚度方向垂直于介质表面。从第一角到主磁极的距离比从第二角到主磁极的距离以及从第三角到主磁极的距离短。第二个角落和第三个角落是圆形的。

28. 发明申请

US20110090587A1 Thermally-Assisted Magnetic Recording Head With Plane-Emission Type Light Source 有权
标题翻译：具有平面发射型光源的热辅助磁记录头
公开(公告)号：US20110090587A1
公开(公告)日：2011-04-21
申请号：US12581385
申请日：2009-10-19
申请人： Tsutomu Chou , Eiji Komura , Koji Shimazawa , Seiichi Takayama
发明人： Tsutomu Chou , Eiji Komura , Koji Shimazawa , Seiichi Takayama
IPC分类号： G11B5/02
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001 , G11B2005/0021
摘要： A thermally-assisted magnetic recording head includes a surface-emitting type light source for emitting substantially collimated beam, a first diffraction optical element for focusing the substantially collimated beam emitted from the surface-emitting type light source, a second diffraction optical element for collimating the light beam focused by the first diffraction optical element, a waveguide integrally formed with the second diffraction optical element and made of the material as that of second diffraction optical element, the light beam collimated by the second diffraction optical element being incident to the waveguide, an optical-path direction conversion element for converting a direction of an optical path of the incident light beam to a propagation direction of the waveguide, the propagation direction being toward an opposed-to-medium surface, and a magnetic pole for generating write field from its end face on the opposed-to-medium surface side.
摘要翻译：热辅助磁记录头包括用于发射基本上准直的光束的表面发射型光源，用于聚焦从表面发射型光源发射的基本上准直的光束的第一衍射光学元件，用于准直由第一衍射光学元件聚焦的光束，与第二衍射光学元件整体形成并由第二衍射光学元件的材料制成的波导，由第二衍射光学元件准直的光束入射到波导，光路方向转换元件，用于将入射光束的光路的方向转换为波导的传播方向，传播方向朝向相对中间的表面;以及磁极，用于从其产生写入场在相对中的表面侧上的端面。

29. 发明授权

US07911882B2 Thin-film magnetic head with near-field-light-generating layer 有权
标题翻译：具有近场光产生层的薄膜磁头
公开(公告)号：US07911882B2
公开(公告)日：2011-03-22
申请号：US11604225
申请日：2006-11-27
申请人： Koji Shimazawa , Katsumichi Tagami
发明人： Koji Shimazawa , Katsumichi Tagami
IPC分类号： G11B7/125 , G11B7/135 , G11B11/10
CPC分类号： G11B5/314 , G11B5/3136 , G11B5/3967 , G11B5/4866 , G11B2005/001 , G11B2005/0021
摘要： A thin-film magnetic head that has a configuration in which the element-formed surface and the opposed-to-medium surface are perpendicular to each other, and a light source is sufficiently distanced from the medium surface is provided. The head comprises at least one near-field-light-generating layer for heating a part of a magnetic medium during write operation by generating a near-field light, having a shape tapered toward a head end surface on the opposed-to-medium surface side, and comprising a near-field-light-generating portion having a light-received surface and a tip reaching the head end surface on the opposed-to-medium surface side, and the light-received surface being sloped in respect to the element-formed surface and being provided in a position where an incident light propagating from a head end surface opposite to the opposed-to-medium surface can reach at least a part of the light-received surface.
摘要翻译：提供具有其中元件形成表面和相对中间表面彼此垂直并且光源足够远离介质表面的构造的薄膜磁头。头部包括至少一个近场光产生层，用于在写入操作期间通过产生近场光来加热磁性介质的一部分，其具有朝向相对中间表面上的头端表面逐渐变细的形状并且包括具有光接收表面的近场光产生部分和到达相对 - 介质表面侧上的头端表面的尖端，并且光接收表面相对于元件倾斜并且设置在从相对于中间相对面的头端面传播的入射光可以到达受光面的至少一部分的位置。

30. 发明申请

US20110038236A1 Near-Field Light Transducer Comprising Propagation Edge With Predetermined Curvature Radius 有权
标题翻译：近场光传感器包括具有预定曲率半径的传播边
公开(公告)号：US20110038236A1
公开(公告)日：2011-02-17
申请号：US12540752
申请日：2009-08-13
申请人： Tomohito Mizuno , Yoshihiro Tsuchiya , Koji Shimazawa , Tsutomu Chou
发明人： Tomohito Mizuno , Yoshihiro Tsuchiya , Koji Shimazawa , Tsutomu Chou
IPC分类号： G11B11/00 , G11B5/02
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/001
摘要： Provided is a near-field light transducer with a propagation edge in which the generation of defects is suppressed. The transducer is formed of a Ag alloy and comprises an edge, the edge comprising a portion to be coupled with a light in a surface plasmon mode, the edge extending from the portion to a near-field light generating end surface, and the edge being configured to propagate surface plasmon excited by the light. Further, a curvature radius of the rounded edge is set in the range from 6.25 nm to 20 nm. In the edge and its vicinity, the generation of defects such as cracking and chipping is suppressed. Thereby improved are a propagation efficiency of surface plasmon and a light use efficiency of the transducer. The Ag alloy preferably contains at least one element selected from a group of Pd, Au, Cu, Ru, Rh and Ir.
摘要翻译：提供了具有传播边缘的近场光传感器，其中抑制了缺陷的产生。传感器由Ag合金形成并且包括边缘，边缘包括要与表面等离子体激元模式的光耦合的部分，边缘从该部分延伸到近场光产生端表面，并且该边缘是配置为传播由光激发的表面等离子体激元。此外，圆角边缘的曲率半径设定在6.25nm至20nm的范围内。在边缘及其附近，抑制诸如破裂和碎裂的缺陷的产生。从而改进了表面等离子体激元的传播效率和传感器的光利用效率。 Ag合金优选含有选自Pd，Au，Cu，Ru，Rh和Ir中的至少一种元素。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式