公开(公告)号：US11243118B2

公开(公告)日：2022-02-08

申请号：US16976110

申请日：2018-03-07

Applicant: TDK Corporation

Inventor： Naoki Ohta ,  Shinji Hara ,  Susumu Aoki ,  Eiji Komura ,  Akimasa Kaizu

IPC: G01J5/22 ,  G01J1/02 ,  G01J5/08 ,  H01L27/146

Abstract: An electromagnetic wave sensor that limits the influence on bolometer membranes that is caused by heat from a local heat source is provided. Electromagnetic wave sensor has first substrate, second substrate that faces first substrate so as to form inner space between first substrate and second substrate, wherein second substrate transmits infrared rays; a plurality of bolometer membranes that is provided in inner space and that is supported by second substrate; local heat source that is formed in first substrate; first electric connection member that connects first substrate to second substrate; and lead that extends on or in second substrate and that connects first electric connection member to bolometer membrane.

公开(公告)号：US08873351B1

公开(公告)日：2014-10-28

申请号：US14011910

申请日：2013-08-28

Applicant: TDK Corporation

Inventor： Susumu Aoki ,  Kosuke Tanaka ,  Shinji Hara ,  Tsutomu Chou

IPC: G11B11/00 ,  G11B5/48 ,  G11B5/00

CPC classification number: G11B5/314 ,  G02B6/1226 ,  G11B5/3133 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A thermally assisted magnetic recording head includes a plasmon-generator that generates near-field light (NF light) from a near-field light generating portion on a near field light generator end surface constituting a portion of the medium opposing surface. The plasmon-generator has a first PG part having the near field light generator end surface constituting a portion of the medium opposing surface, and a second PG part positioned at a back side compared to the medium opposing surface when viewed from the medium opposing surface side. When viewed from the medium opposing surface side, the first PG part extends toward the back side from the medium opposing surface, and the second PG part is placed to contact at least a portion of both side surfaces of the first PG part. A material that configures the first PG part is a material having high thermostability compared to a material that configures the second PG part, and the material that configures the second PG part is a material having high excitation efficiency of plasmon compared to the material that configures the first PG part.

Abstract translation: 热辅助磁记录头包括等离子体发生器，其在构成介质相对表面的一部分的近场光产生器端表面上产生近场光产生部分的近场光（NF光）。 等离子体发生器具有第一PG部分，其具有构成介质相对表面的一部分的近场光产生器端表面，以及当从介质相对表面侧观察时，位于背面的第二PG部分 。 当从介质相对表面侧观察时，第一PG部分从介质相对表面朝向后侧延伸，并且第二PG部分被放置成接触第一PG部分的两个侧表面的至少一部分。 配置第一PG部件的材料是与构成第二PG部件的材料相比具有高热稳定性的材料，并且构成第二PG部件的材料是与构成第二PG部件的材料相比具有高等离子体激发效率的材料 第一PG部分。

公开(公告)号：US08873185B2

公开(公告)日：2014-10-28

申请号：US13849784

申请日：2013-03-25

Applicant: TDK Corporation

Inventor： Kosuke Tanaka ,  Susumu Aoki ,  Keita Kawamori ,  Hiroki Kawato

IPC: G11B5/02 ,  G11B11/00 ,  G11B5/127

CPC classification number: G11B5/3163 ,  G11B5/1278 ,  G11B5/314 ,  G11B2005/0021

Abstract: The thermally-assisted magnetic recording head includes: a magnetic pole having an end exposed on an air-bearing surface; a waveguide; a plasmon generator formed essentially of a first metallic material, and having a first region and a second region, the first region extending backward from the air-bearing surface to a first position, and the second region being coupled with the first region at the first position and extending backward from the first position; and a metallic layer filling a part in the second region, and formed essentially of a second metallic material that has a higher melting temperature than a melting temperature of the first metallic material.

Abstract translation: 热辅助磁记录头包括：具有暴露在空气轴承表面上的端部的磁极; 波导; 基本上由第一金属材料形成并具有第一区域和第二区域的等离子体发生器，所述第一区域从空气支承表面向后延伸到第一位置，并且所述第二区域在第一区域与第一区域耦合 位置并从第一位置向后延伸; 以及填充在第二区域中的部分的金属层，并且基本上由具有比第一金属材料的熔融温度更高的熔融温度的第二金属材料形成。

公开(公告)号：US08767348B1

公开(公告)日：2014-07-01

申请号：US13789086

申请日：2013-03-07

Applicant: TDK Corporation

Inventor： Kosuke Tanaka ,  Susumu Aoki ,  Keita Kawamori ,  Hiroki Kawato

IPC: G11B5/187 ,  G11B7/135 ,  G11B11/10

CPC classification number: G11B5/6088 ,  G11B5/314 ,  G11B2005/0021

Abstract: The thermally-assisted magnetic recording head of the invention includes: a waveguide; a magnetic pole; a cladding layer provided between the waveguide and the magnetic pole; and a plasmon generator embedded in the cladding layer. The cladding layer includes a first cladding section located on a side close to an air-bearing surface and a second cladding section located on a side far from the air-bearing surface, and a thermal expansion coefficient of the first cladding section is larger than a thermal expansion coefficient of the second cladding section.

Abstract translation: 本发明的热辅助磁记录头包括：波导; 磁极 设置在波导和磁极之间的包层; 以及嵌入包层中的等离子体发生器。 包覆层包括位于靠近空气轴承表面的一侧的第一包层部分和位于远离空气轴承表面的一侧的第二包层部分，并且第一包层部分的热膨胀系数大于 第二包层部的热膨胀系数。

公开(公告)号：US11573122B2

公开(公告)日：2023-02-07

申请号：US16550371

申请日：2019-08-26

Applicant: TDK CORPORATION

Inventor： Naoki Ohta ,  Yuji Kakinuma ,  Shinji Hara ,  Susumu Aoki ,  Keita Kawamori ,  Eiji Komura

IPC: G11C11/00 ,  G01J1/44 ,  H01L27/24 ,  H03F3/45 ,  G11C13/00 ,  H01L37/02 ,  H01L45/00

Abstract: A resistive element array circuit includes word lines, bit lines, resistive elements, a selector, a differential amplifier, and a ground terminal. The word lines are coupled to a power supply. The resistive elements are each disposed at an intersection of corresponding one of the word lines and corresponding one of the bit lines. The selector is configured to select one word line and one bit line. The differential amplifier includes a positive input terminal configured to be coupled to the selected one of the bit lines which is selected by the selector, a negative input terminal configured to be coupled to non-selected one of the bit lines which is not selected by the selector and to non-selected one of the word lines which is not selected by the selector, an output terminal being coupled to the negative input terminal. The ground terminal is coupled to the positive input terminal.

公开(公告)号：US09293165B2

公开(公告)日：2016-03-22

申请号：US14204020

申请日：2014-03-11

Applicant: TDK Corporation

Inventor： Susumu Aoki ,  Takafumi Kobayashi ,  Ryo Hosoi ,  Kei Hirata

IPC: G11B5/00 ,  G11B5/60 ,  G11B5/187 ,  G11B5/31 ,  G11B5/11 ,  G11B5/127

CPC classification number: G11B5/6088 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/187 ,  G11B5/314 ,  G11B2005/0021

Abstract: A recording head has a near field light (NF light) generator generating NF light on a generator end surface that irradiates a magnetic recording (MR) medium; a main magnetic pole including a pole end surface facing an air bearing surface (ABS) that emits magnetic flux to the MR medium from the pole end surface; and a return shield having a shield end surface facing the ABS, that is magnetically linked with the main magnetic pole, and absorbs magnetic flux from the MR medium at the shield end surface. The pole end surface and the shield end surface are on the same side of the generator end surface in the down track direction, and are close to each other in the track crossing direction. A center line in the down track direction of the generator end surface extends between opposing sides of the pole end surface and the shield end surface.

Abstract translation: 记录头具有在发生磁记录介质的发生器端面产生NF光的近场光（NF光）发生器; 主磁极，包括面向从极端表面向MR介质发射磁通的空气轴承表面（ABS）的极端表面; 以及具有面向ABS的屏蔽端面的返回屏蔽件，其与主磁极磁连接，并且在屏蔽端表面处吸收来自MR介质的磁通量。 磁极端面和屏蔽端面在下行轨道方向上位于发电机端面的同一侧，并且在轨道交叉方向上彼此靠近。 发电机端面的向下方向的中心线在极端面和屏蔽端面的相对侧面之间延伸。