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1. 发明专利

JP2015041701A 磁気センサ有权
标题翻译：磁传感器
公开(公告)号：JP2015041701A
公开(公告)日：2015-03-02
申请号：JP2013172286
申请日：2013-08-22
申请人： Tdk株式会社 , Tdk Corp , Tdk株式会社
发明人： WADA YOSHIMITSU , HACHISUGA NOZOMI , KUDO YOSHIHIRO , ONO JUN , NISHIO NOBUTAKA
IPC分类号： H01L43/02 , G01R33/02 , G01R33/09 , H01L23/29 , H01L23/31 , H01L43/08
CPC分类号： G01R33/098 , G01R33/091
摘要：【課題】磁気抵抗効果素子を備えたセンサチップが樹脂部材で封止された構造であり、かつ、センサチップの特性が良好な状態で発現可能な磁気センサを提供する。【解決手段】磁気センサを、基部2と、この基部2上に位置し磁気抵抗効果素子を備えるセンサチップ4と、センサチップ4の端子4aと接続リード6とを電気的に接続する配線部5と、少なくともセンサチップ4を被覆する低弾性率樹脂7と、少なくとも低弾性率樹脂7および配線部5とを被覆する高弾性率樹脂8と、を有するものとし、低弾性率樹脂の弾性率を10kPa〜80MPaの範囲、高弾性率樹脂の弾性率を1GPa以上とする。【選択図】図1
摘要翻译：要解决的问题：提供一种磁传感器，该传感器具有这样一种结构，使得设置有磁阻效应元件的传感器芯片被树脂部件密封，并且传感器芯片的特性可以以良好的状态表达。解决方案：磁传感器包括：基部2; 传感器芯片4，其位于基部2上并设置有磁阻效应元件; 将传感器芯片4的端子4a与连接引线6电连接的布线部5; 至少覆盖传感器芯片4的低弹性模量树脂7; 以及至少覆盖低弹性模量树脂7和布线部5的高弹性模量树脂8.低弹性模量树脂7的弹性模量在10kPa〜80MPa的范围内，高弹性模量弹性模量树脂8为1GPa以上。

2. 发明专利

JP2007311400A Process for fabricating magnetoresistive effect element with bias layer 审中-公开
标题翻译：用于制备具有偏振层的磁阻效应元件的方法
公开(公告)号：JP2007311400A
公开(公告)日：2007-11-29
申请号：JP2006136354
申请日：2006-05-16
申请人： Tdk Corp , Tdk株式会社
发明人： HACHISUGA NOZOMI , IBARADA KAZUHIRO
IPC分类号： H01L43/12 , G11B5/39 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To provide a process for fabricating an MR effect element in which inclination or dispersion of a magnetization fixation layer occurred during fabrication process is eliminated finally, and magnetization of the magnetization fixation layer is fixed appropriately while applying an appropriate bias magnetic field to a bias layer. SOLUTION: The fabrication process of an MR effect element comprises an MR effect laminate including an antiferromagnetic layer, a magnetization fixation layer where magnetization is fixed in the first direction in the lamination plane, a nonmagnetic intermediate layer, and a magnetization free layer; and a bias layer for applying a bias magnetic field in the second direction in the lamination plane intersecting the first direction perpendicularly to the magnetization free layer. The MR effect laminate and the bias layer thus formed are subjected to first magnetic field application processing for applying a first magnetic field larger than the coercive force of the bias layer in the first direction, and then subjected to second magnetic field application processing for applying a second magnetic field larger than the coercive force of the bias layer in the second direction following to annealing for applying heat. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种制造在制造过程中发生磁化固定层的倾斜或分散的MR效应元件的方法，最终消除了磁化固定层的磁化，同时施加适当的将偏置磁场偏置到偏置层。解决方案：MR效应元件的制造过程包括MR效应层压板，其包括反铁磁层，磁化固定层，其中磁化在层压平面中的第一方向上固定，非磁性中间层和无磁化层 ; 以及偏置层，用于在与第一方向垂直于磁化自由层相交的层叠平面中沿第二方向施加偏置磁场。对由此形成的MR效应层叠体和偏置层进行第一磁场施加处理，以在第一方向施加大于偏置层的矫顽力的第一磁场，然后进行第二磁场施加处理，第二磁场大于在施加热的退火之后的第二方向上的偏置层的矫顽力。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2006060120A Method and device for inspecting tunneling magnetoresistive effect element 审中-公开
标题翻译：用于检查隧道磁阻效应元件的方法和装置
公开(公告)号：JP2006060120A
公开(公告)日：2006-03-02
申请号：JP2004242189
申请日：2004-08-23
申请人： Tdk Corp , Tdk株式会社
发明人： HACHISUGA NOZOMI , SARUGI SHUNJI , KAGAMI TAKERO , INAGE KENJI
IPC分类号： H01L43/12 , G11B5/39 , G11B5/455 , H01L21/8246 , H01L27/105
摘要： PROBLEM TO BE SOLVED: To provide a method and a device for inspecting a TMR element which are capable of validating the reliability of the TMR element easily, surely and accurately in a short time with a comparatively low applied voltage which scarcely causes damage to the TMR element.
SOLUTION: Each time stress voltages different from each other in polarity are applied to the TMR element, resistance values of the TMR element are measured, respectively. A resistance change volume is obtained from the measured resistance values so as to evaluate the TMR element.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于检查TMR元件的方法和装置，其能够在几乎不引起损坏的较低施加电压的短时间内容易地，准确和准确地验证TMR元件的可靠性到TMR元素。
解决方案：每次在TMR元件上施加极性相互不同的应力电压时，分别测量TMR元件的电阻值。从测量的电阻值获得电阻变化量，以评估TMR元件。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2004206790A Thin film magnetic head 审中-公开
公开(公告)号：JP2004206790A
公开(公告)日：2004-07-22
申请号：JP2002374322
申请日：2002-12-25
申请人： Tdk Corp , Tdk株式会社
发明人： HACHISUGA NOZOMI , KASAHARA HIROAKI
IPC分类号： G11B5/31 , G11B5/39
摘要： PROBLEM TO BE SOLVED: To prevent crosstalk from a write head element to a read head element in a thin film magnetic head having an MR read head element for taking out the output by supplying current in a direction perpendicular to a stacked surface.
SOLUTION: This head is provided with a read head element having a lower shield layer serving also as a lower electrode, an upper shield layer serving also as an upper electrode, and an MR stacked body formed between the lower shield layer and the upper shield layer to take out the output by supplying current in a direction perpendicular to a stacked surface, a write head element having a lower magnetic layer stacked on the read head element, and an upper magnetic layer opposite the lower magnetic layer through a magnetic gap layer, and a guard potential supply means for supplying a guard potential to one of the lower and upper magnetic layers closer to the read head element.
COPYRIGHT: (C)2004,JPO&NCIPI

5. 发明专利

JP2012078124A Electromagnetic device 有权
标题翻译：电磁装置
公开(公告)号：JP2012078124A
公开(公告)日：2012-04-19
申请号：JP2010221312
申请日：2010-09-30
申请人： Tdk Corp , Tdk株式会社
发明人： UMEHARA TAKESHI , HACHISUGA NOZOMI , SARUGI SHUNJI , HIRABAYASHI HIROSHI
IPC分类号： G01R33/02 , G01R33/09
摘要： PROBLEM TO BE SOLVED: To suppress influence of induced electromotive force which is generated by a magnetic field of a magnet affecting a substrate.SOLUTION: An electromagnetic device includes a substrate 3, and a magnet 2 which is positioned opposite to the substrate 3 and has an S pole and an N pole in the surface opposite to the substrate 3. The substrate 3 has an electric component 4, and a plurality of pieces of electric wiring 5a, 5b which are connected to the electric component 4 and drawn on the substrate 3. The magnet 2 and the substrate 3 are movable or rotatable relatively to each other. The plurality of pieces of electric wiring 5a, 5b include: a part 5X which is located in the drawing direction seen from the electric component 4 and in which the induced electromotive force is generated by magnetic force produced by the magnet 2 when the magnet 2 and the substrate 3 move or rotate relatively to each other; and a part 5Y which is located on the side opposite to the drawing direction seen from the electric component 4 and where induced electromotive force with polarity opposite to the polarity of the induced electromotive force is generated.
摘要翻译：要解决的问题：抑制由影响基板的磁体的磁场产生的感应电动势的影响。解决方案：电磁装置包括基板3和与基板3相对定位且在与基板3相对的表面中具有S极和N极的磁体2.基板3具有电气部件 4，以及与电气部件4连接并被拉伸在基板3上的多根电线5a，5b。磁体2和基板3相对于彼此可移动或旋转。多根电线5a，5b包括：从电气部件4观察的位于拉拔方向的部分5X，其中当磁铁2和磁体2由磁铁2产生的磁力产生感应电动势时基板3相对于彼此移动或旋转; 以及位于与电气部件4所看到的与拉拔方向相反的一侧的部分5Y，并且产生极性与感应电动势的极性相反的感应电动势。版权所有（C）2012，JPO＆INPIT

6. 发明专利

JP2007226874A Thin film magnetic head manufacturing method including multiple annealing steps in machining process 审中-公开
标题翻译：薄膜磁头制造方法，包括加工过程中的多个退火步骤
公开(公告)号：JP2007226874A
公开(公告)日：2007-09-06
申请号：JP2006045201
申请日：2006-02-22
申请人： Shinka Jitsugyo Kk , Tdk Corp , Tdk株式会社 , 新科實業有限公司SAE Magnetics(H.K.)Ltd.
发明人： HACHISUGA NOZOMI , KUWAJIMA TETSUYA , UEDA KUNIHIRO , ERIC RYON , ELLI WANG I , CHRIS CHIU MI
IPC分类号： G11B5/39 , G11B5/60
摘要： PROBLEM TO BE SOLVED: To provide a thin film magnetic head manufacturing method that sufficiently removes machining distortions without fail in machining processes while suppressing deformation of the thin film magnetic head.
SOLUTION: The thin film magnetic head manufacturing method includes: cutting out a processing bar from a substrate with magnetic head elements formed thereon; applying coarse grinding to this processing bar for height processing; finely polishing it and applying a protective coat on the ends of the head at the ABS side to form a rail; and then cutting and separating the processing bar into sliders. The method applies annealing at a first temperature to the processing bar after the coarse grinding for height processing but before fine polishing, and another annealing at a second temperature after forming a protective coat but before forming a rail. Alternatively, it applies further annealing at a third temperature lower than the first temperature after applying annealing at the first temperature, and cutting and separating the bar into sliders.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决的问题：提供一种能够在抑制薄膜磁头的变形的同时在加工过程中不加以充分地去除加工变形的薄膜磁头制造方法。解决方案：薄膜磁头制造方法包括：从其上形成有磁头元件的基板切出加工棒; 对该处理棒进行粗磨以进行高度加工; 精细抛光并在ABS侧的头部端部上涂一层防护涂层以形成轨道; 然后将加工棒切割并分离成滑块。该方法在用于高度加工的粗磨之后但在精细抛光之前在第一温度下对加工棒进行退火，以及在形成保护涂层之后但在形成轨道之前在第二温度下的另一退火。或者，在第一温度下进行退火之后，在比第一温度低的第三温度下进行进一步的退火，并且将棒切割并分离成滑块。版权所有（C）2007，JPO＆INPIT

7. 发明专利

JP2006134488A Thin film magnetic head, head gimbal assembly, and hard disk drive 有权
标题翻译：薄膜磁头，头盖组件和硬盘驱动
公开(公告)号：JP2006134488A
公开(公告)日：2006-05-25
申请号：JP2004323197
申请日：2004-11-08
申请人： Tdk Corp , Tdk株式会社
发明人： KASAHARA HIROAKI , HACHISUGA NOZOMI
IPC分类号： G11B5/39
CPC分类号： G11B5/4826 , G11B5/31
摘要： PROBLEM TO BE SOLVED: To provide a thin film magnetic head in which not only the propagation of heat to a magnetoresistive effect layer can be limited as far as possible, but a significant improvement in stable recording and reproducing characteristics for a high recording frequency, i.e. in frequency characteristics (f characteristics) in a high frequency region can be achieved.
SOLUTION: A first lead for connecting a lower shielding layer and a first extraction electrode section and a second lead for connecting an upper shielding layer and a second extraction electrode section are so formed that the patterns for forming these leads bypass a heat sink layer without having an overlap area with the heat sink layer when the patterns are observed in a plane transmissive state toward the lower shielding layer from the upper shielding layer.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种薄膜磁头，其中不仅可以尽可能限制对磁阻效应层的热传播，而且可以显着改善用于高记录的稳定的记录和再现特性可以实现高频区域的频率特性（f特性）。解决方案：用于连接下屏蔽层和第一引出电极部分的第一引线和用于连接上屏蔽层和第二引出电极部分的第二引线形成为使得用于形成这些引线的图案绕过散热器在从上屏蔽层朝向下屏蔽层的平面透射状态观察图案时，不会与散热层具有重叠区域。版权所有（C）2006，JPO＆NCIPI

8. 发明专利

JP2005311167A Method for testing tunnel magnetoresistance element and apparatus therefor 审中-公开
标题翻译：用于测试隧道磁阻元件的方法及其装置
公开(公告)号：JP2005311167A
公开(公告)日：2005-11-04
申请号：JP2004128111
申请日：2004-04-23
申请人： Tdk Corp , Tdk株式会社
发明人： SARUGI SHUNJI , INAGE KENJI , HACHISUGA NOZOMI , KIYONO HIROSHI
IPC分类号： G01R33/09 , G11B5/39 , G11B5/455 , G11C11/00 , G11C29/50 , H01L21/8246 , H01L27/105 , H01L43/08 , H01L43/12
CPC分类号： G11C11/16 , G11C29/50 , G11C29/50008 , G11C2029/5006
摘要： PROBLEM TO BE SOLVED: To provide a TMR element testing method, wherein a TMR element is tested for stability and reliability very easily, without breaking down the element, and to provide an apparatus therefor.
SOLUTION: The initial resistance of the TMR element is measured, and the value is defined as the first resistance value. A current is made to flow through the TMR element from the direction remote from the substrate (above) toward the substrate (below), the resistance of the TMR is measured, after a specified time period of current flow, and the value is defined as the second resistance value. A comparison is made between the first resistance value and the second resistance value for the evaluation of the TMR element.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供TMR元件测试方法，其中非常容易地测试TMR元件的稳定性和可靠性，而不会破坏元件，并提供其设备。
解决方案：测量TMR元件的初始电阻，该值被定义为第一个电阻值。使电流从远离基板（上方）的方向朝向基板（下方）流过TMR元件，在电流指定的时间段之后测量TMR的电阻，并将该值定义为第二个电阻值。比较用于评价TMR元件的第一电阻值和第二电阻值。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2005293762A Composite thin film magnetic head 审中-公开
标题翻译：复合薄膜磁头
公开(公告)号：JP2005293762A
公开(公告)日：2005-10-20
申请号：JP2004109716
申请日：2004-04-02
申请人： Tdk Corp , Tdk株式会社
发明人： KIYONO HIROSHI , HACHISUGA NOZOMI , SARUGI SHUNJI , KASAHARA HIROAKI
IPC分类号： G11B5/31 , G11B5/127 , G11B5/33 , G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3909 , G11B5/3912 , G11B5/3967 , G11B2005/3996
摘要： PROBLEM TO BE SOLVED: To provide a composite thin film magnetic head provided with an MR read head element of a CPP structure capable of considerably reducing crosstalk between a write side and a read side.
SOLUTION: The composite thin film magnetic head is provided with: an MR read head element having an upper shield layer, a lower shield layer, and an MR layer through which a sense current flows in a direction perpendicular to the laminated face via the upper shield layer and the lower shield layer; and an inductive write head element formed on the MR read head element and including an upper magnetic pole layer, a lower magnetic pole layer the tip of which is opposed to the tip of the upper magnetic pole layer via a recording gap layer, and a write coil, and first and second compensation capacitor means are respectively formed between both ends of the write coil and the lower shield layer.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种复合薄膜磁头，其具有能够显着减少写入侧和读取侧之间的串扰的CPP结构的MR读取头元件。复合薄膜磁头设置有：MR读取头元件，具有上屏蔽层，下屏蔽层和MR层，感测电流沿垂直于层叠面的方向流过该MR层上屏蔽层和下屏蔽层; 以及形成在MR读取头元件上并包括上磁极层的感应写入头元件，其上端部经由记录间隙层与上部磁极层的顶端相对的下部磁极层，以及写入线圈和第一和第二补偿电容器装置分别形成在写入线圈和下部屏蔽层的两端之间。版权所有（C）2006，JPO＆NCIPI

10. 发明专利

JP2012127736A Magnetic sensor 有权
标题翻译：磁传感器
公开(公告)号：JP2012127736A
公开(公告)日：2012-07-05
申请号：JP2010277970
申请日：2010-12-14
申请人： Tdk Corp , Tdk株式会社
发明人： HACHISUGA NOZOMI , HIRABAYASHI HIROSHI
IPC分类号： G01D5/16 , G01R33/09 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To provide a magnetic sensor capable of accurately detecting, as an angle, a direction of a magnetic field with influence of intensity of the magnetic field eliminated.SOLUTION: A first sensor part 120 includes one or more magnetoresistance effect elements to be magnetically saturated by a magnetic field to be measured and outputs angle signals V1 and V2 in accordance with a direction of the magnetic field. A magnetoresistance effect element 30 of a second sensor part 130 is not magnetically saturated by the magnetic field B to be measured, and therefore, it may detect intensity of the magnetic field in an unsaturated region of its characteristic, namely, in a region where an output voltage is linearly changed against intensity change of the magnetic field. In a magnetic sensor of this invention, since a calculated value of an angle is corrected in accordance with an intensity signal V3, an angle error depending upon the intensity H of the magnetic field B to be measured may be reduced, so that a direction of the magnetic field may be accurately detected as an angle.
摘要翻译：要解决的问题：提供一种磁传感器，其能够在磁场强度的影响下，以正确的方式检测磁场的方向。解决方案：第一传感器部件120包括一个或多个磁阻效应元件，以被要测量的磁场磁饱和，并根据磁场的方向输出角度信号V1和V2。第二传感器部件130的磁阻效应元件30不被被测量的磁场B磁饱和，因此可以检测其特性的不饱和区域中的磁场强度，即，在输出电压相对于磁场的强度变化呈线性变化。在本发明的磁传感器中，由于根据强度信号V3来校正角度的计算值，所以可以减小取决于要测量的磁场B的强度H的角度误差，使得方向可以将磁场精确地检测为一个角度。版权所有（C）2012，JPO＆INPIT

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