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21. 发明申请

US20110025320A1 MAGNETIC SENSOR 有权
标题翻译：磁传感器
公开(公告)号：US20110025320A1
公开(公告)日：2011-02-03
申请号：US12844090
申请日：2010-07-27
申请人： Naoki OHTA , Masanori Sakai , Hiraku Hirabayashi
发明人： Naoki OHTA , Masanori Sakai , Hiraku Hirabayashi
IPC分类号： G01R33/02 , H01L43/00
CPC分类号： G01R33/091 , G01R33/098 , H01L43/08
摘要： A magnetoresistive element includes magnetoresistive films each having an upper surface and a lower surface, and conductors combining the magnetoresistive films in series and including top electrodes and bottom electrodes. Each one of the top electrodes and corresponding one of the bottom electrodes oppose each other to sandwich corresponding one of the magnetoresistive films. Each electrode of the top electrodes and the bottom electrodes includes a stem section and a branch section, the stem section extending in a direction along a series alignment direction of the magnetoresistive films, and the branch section extending along the lamination plane in a direction intersecting a direction in which the stem section extends. The branch section in the top electrode is in contact with an upper surface of the corresponding magnetoresistive film, and the branch section in the bottom electrode is in contact with a lower surface of the corresponding magnetoresistive film.
摘要翻译：磁阻元件包括各自具有上表面和下表面的磁阻膜，以及将磁阻膜串联并包括顶电极和底电极的导体。顶部电极和对应的一个底部电极中的每一个彼此相对以夹持相应的一个磁阻膜。顶部电极和底部电极的每个电极包括杆部分和分支部分，杆部分在沿着磁阻膜的串联取向方向的方向上延伸，并且分支部分沿着层叠平面沿与杆段延伸的方向。顶部电极中的分支部分与相应的磁阻膜的上表面接触，并且底部电极中的分支部分与相应的磁阻膜的下表面接触。

22. 发明授权

US07854060B2 Magnetic head substructure for use for manufacturing a magnetic head 有权
标题翻译：用于制造磁头的磁头子结构
公开(公告)号：US07854060B2
公开(公告)日：2010-12-21
申请号：US11987995
申请日：2007-12-06
申请人： Hiraku Hirabayashi
发明人： Hiraku Hirabayashi
IPC分类号： B23P19/00 , G11C5/12 , H01M6/00
CPC分类号： G11B5/3166 , G11B5/3116 , G11B5/3169 , G11B5/3173 , Y10T29/49032 , Y10T29/49036 , Y10T29/49048 , Y10T29/4906 , Y10T29/49798 , Y10T29/53165
摘要： A substructure in which a plurality of pre-head portions are aligned in rows is to be cut later so that the pre-head portions are separated from one another. A surface formed by cutting the substructure is lapped to form medium facing surfaces. The substructure includes a plurality of sensors that respectively show individual sensor values corresponding to values of a plurality of different parameters each of which has an influence on characteristics relating to the pole layer and each of which depends on the position of the medium facing surface. The individual sensor values are resistance values each of which varies according to the position of the medium facing surface. The plurality of sensors are electrically connected to each other to form a composite sensor that shows a composite sensor value, which is a resistance value that depends on the resistance values of the plurality of sensors.
摘要翻译：将多个前头部分排列成行的下部结构将被稍后切割，使得前头部彼此分离。通过切割子结构形成的表面被研磨以形成面向中等的表面。子结构包括多个传感器，其分别示出对应于多个不同参数的值的各个传感器值，每个传感器值对与极性层相关的特性有影响，并且每个都取决于介质面向表面的位置。各个传感器值是根据介质面对表面的位置而变化的电阻值。多个传感器彼此电连接以形成复合传感器，其显示复合传感器值，该复合传感器值是取决于多个传感器的电阻值的电阻值。

23. 发明授权

US07817376B2 Thin-film magnetic head having magnetic layer with non-magnetic portion 失效
标题翻译：具有非磁性部分的磁性层的薄膜磁头
公开(公告)号：US07817376B2
公开(公告)日：2010-10-19
申请号：US11738686
申请日：2007-04-23
申请人： Hiraku Hirabayashi , Kenkichi Anagawa
发明人： Hiraku Hirabayashi , Kenkichi Anagawa
IPC分类号： G11B5/127 , G11B5/147
CPC分类号： G11B5/3116 , G11B5/1872 , G11B5/314
摘要： Provided is a thin-film magnetic head capable of suppressing ATE while ensuring sufficient controllability of the magnetic pole width and sufficient write field intensity. The head includes an electromagnetic coil element comprising: upper and lower magnetic layers; a write gap layer; and a write coil layer, the lower magnetic layer comprising: a lower yoke layer, a non-magnetic portion formed on an end portion on the ABS side of the lower yoke layer and extending to a head end surface on the ABS side; and a lower magnetic pole layer, an upper surface of the lower magnetic pole layer being in contact with the write gap layer, and an end surface in the head end surface of the lower magnetic pole layer having a shape whose width along a track width direction is defined by a predetermined magnetic pole width.
摘要翻译：提供一种能够抑制ATE的薄膜磁头，同时确保磁极宽度的足够可控性和足够的写入场强度。头部包括电磁线圈元件，包括：上和下磁性层; 写间隙层; 以及写入线圈层，所述下磁性层包括：下磁轭层，形成在所述下轭铁层的ABS侧的端部上并延伸到所述ABS侧的头端面的非磁性部; 和下磁极层，下磁极层的上表面与写间隙层接触，下磁极层的头端面的端面具有沿着磁道宽度方向的宽度的形状由预定的磁极宽度限定。

24. 发明授权

US07667928B2 Thin-film magnetic head having a width-thickness configured shield layer positioned by spacer pieces for use in a head gimbal assembly of a hard disk system 有权
标题翻译：具有由用于硬盘系统的头万向架组件中的间隔件定位的宽度厚度配置的屏蔽层的薄膜磁头
公开(公告)号：US07667928B2
公开(公告)日：2010-02-23
申请号：US12348655
申请日：2009-01-05
申请人： Hiraku Hirabayashi , Norikazu Ota
发明人： Hiraku Hirabayashi , Norikazu Ota
IPC分类号： G11B5/127
CPC分类号： G11B5/3116 , G11B5/1872 , G11B5/3136 , Y10T29/49032
摘要： A write shield layer that forms a part of a thin-film magnetic head is set with respect to the widthwise full length W thereof lying substantially on an air bearing surface that is opposite to the recording medium such that when the full length W is trisected, the maximum thickness H1/3side thereof in a range of widthwise ⅓W size positioned at both ends thereof is larger than the average thickness Hm of the whole write shield layer from the air bearing surface up to the rear (H1/3side>Hm), so that the so-called external magnetic field resistance is improved, and inadvertent erasure of the information already recorded in the recording medium is avoided as much as possible. Besides, the PTP (pole tip protrusion) phenomenon arising from the generation of heat from coils, and external temperature changes can be held back.
摘要翻译：形成薄膜磁头的一部分的写入屏蔽层相对于其宽度方向的全长W设置，其基本上位于与记录介质相对的空气轴承表面上，使得当全长W被三等分时，位于两端宽度方向的1/3宽度范围内的最大厚度H1 / 3侧大于整个写入屏蔽层从空气支承面到后方的平均厚度Hm（H1 / 3side> Hm），所以所谓的外部磁场电阻改善，并且尽可能地避免已经记录在记录介质中的信息的无意擦除。此外，可以阻止从线圈产生热量引起的PTP（极尖突起）现象以及外部温度变化。

25. 发明申请

US20060256481A1 Composite thin-film magnetic head, magnetic head assembly and magnetic disk drive apparatus 有权
标题翻译：复合薄膜磁头，磁头组件和磁盘驱动装置
公开(公告)号：US20060256481A1
公开(公告)日：2006-11-16
申请号：US11393775
申请日：2006-03-31
申请人： Takeo Kagami , Hiroshi Kiyono , Hiraku Hirabayashi , Eiichi Omata , Seiji Yari , Takamitsu Sakamoto
发明人： Takeo Kagami , Hiroshi Kiyono , Hiraku Hirabayashi , Eiichi Omata , Seiji Yari , Takamitsu Sakamoto
IPC分类号： G11B5/33 , G11B5/127
CPC分类号： G11B5/3116 , G11B5/11 , G11B5/3133 , G11B5/3146 , G11B5/3967 , G11B5/6064 , G11B2005/0005
摘要： A composite thin-film magnetic head includes a substrate, an under layer formed on the substrate, an MR read head element formed on the under layer and provided with a lower shield layer, an upper shield layer and an MR layer in which a sense current flows in a direction perpendicular to a surface of the MR layer through the upper shield layer and the lower shield layer, an inter-shield insulation layer laminated on the MR read head element, an inductive write head element formed on the inter-shield insulation layer and provided with a first magnetic pole layer, a nonmagnetic layer, a second magnetic pole layer whose end portion is opposed to an end portion of the first magnetic pole layer through the nonmagnetic layer, and a write coil, and an additional shield layer formed between the upper shield layer and the first magnetic pole layer.
摘要翻译：复合薄膜磁头包括基板，形成在基板上的下层，形成在下层上并设置有下屏蔽层，上屏蔽层和MR层的MR读头元件，其中感测电流通过上屏蔽层和下屏蔽层在垂直于MR层的表面的方向上流动，层叠在MR读头元件上的屏蔽间绝缘层，形成在屏蔽间绝缘层上的感应写头元件并且具有第一磁极层，非磁性层，其端部通过非磁性层与第一磁极层的端部相对的第二磁极层和写入线圈，以及形成在第一磁极层之间的附加屏蔽层上屏蔽层和第一磁极层。

26. 发明授权

US08593139B2 Magnetic sensor 有权
标题翻译：磁传感器
公开(公告)号：US08593139B2
公开(公告)日：2013-11-26
申请号：US12947328
申请日：2010-11-16
申请人： Naoki Ohta , Hiraku Hirabayashi , Masanori Sakai , Hiroshi Naganuma
发明人： Naoki Ohta , Hiraku Hirabayashi , Masanori Sakai , Hiroshi Naganuma
IPC分类号： G01R33/02
CPC分类号： G01R33/093 , B82Y25/00 , G01R33/0029
摘要： A magnetic sensor includes a spin valve-type magneto-resistive element, a voltage detection part, a coil, and a current control part, the coil being configured to apply a measuring magnetic field to the spin valve-type magneto-resistive element upon application of a current, the voltage detection part being configured to output a detection signal to the current control part upon detecting an output voltage of the spin valve-type magneto-resistive element reaching a predetermined voltage value, the current control part being configured to control the current to unidirectionally increase or unidirectionally decrease a strength of the measuring magnetic field from an initial value, but upon input of the detection signal, control the current to return the strength of the measuring magnetic field to the initial value, the initial value being a magnetic field strength where the spin valve-type magneto-resistive element reaches saturation magnetization.
摘要翻译：磁传感器包括自旋阀型磁阻元件，电压检测部件，线圈和电流控制部件，该线圈被配置为在应用时向自旋阀型磁阻元件施加测量磁场电流检测部分被配置为在检测到自旋阀型磁阻元件的输出电压达到预定电压值时将检测信号输出到电流控制部分，该电流控制部分被配置为控制电流控制部分电流从初始值单向增加或单向地降低测量磁场的强度，但是当输入检测信号时，控制电流将测量磁场的强度返回到初始值，初始值为磁自旋阀型磁阻元件达到饱和磁化强度的场强。

27. 发明申请

US20110221433A1 MAGNETIC SENSOR 有权
标题翻译：磁传感器
公开(公告)号：US20110221433A1
公开(公告)日：2011-09-15
申请号：US12947328
申请日：2010-11-16
申请人： Naoki OHTA , Hiraku Hirabayashi , Masanori Sakai , Hiroshi Naganuma
发明人： Naoki OHTA , Hiraku Hirabayashi , Masanori Sakai , Hiroshi Naganuma
IPC分类号： G01R33/02
CPC分类号： G01R33/093 , B82Y25/00 , G01R33/0029
摘要： A magnetic sensor includes a spin valve-type magneto-resistive element, a voltage detection part, a coil, and a current control part, the coil being configured to apply a measuring magnetic field to the spin valve-type magneto-resistive element upon application of a current, the voltage detection part being configured to output a detection signal to the current control part upon detecting an output voltage of the spin valve-type magneto-resistive element reaching a predetermined voltage value, the current control part being configured to control the current to unidirectionally increase or unidirectionally decrease a strength of the measuring magnetic field from an initial value, but upon input of the detection signal, control the current to return the strength of the measuring magnetic field to the initial value, the initial value being a magnetic field strength where the spin valve-type magneto-resistive element reaches saturation magnetization.
摘要翻译：磁传感器包括自旋阀型磁阻元件，电压检测部件，线圈和电流控制部件，该线圈被配置为在应用时向自旋阀型磁阻元件施加测量磁场电流检测部分被配置为在检测到自旋阀型磁阻元件的输出电压达到预定电压值时将检测信号输出到电流控制部分，该电流控制部分被配置为控制电流控制部分电流从初始值单向增加或单向地降低测量磁场的强度，但是当输入检测信号时，控制电流将测量磁场的强度返回到初始值，初始值为磁自旋阀型磁阻元件达到饱和磁化强度的场强。

28. 发明授权

US07924533B2 Multi-channel head 有权
标题翻译：多通道头
公开(公告)号：US07924533B2
公开(公告)日：2011-04-12
申请号：US11740530
申请日：2007-04-26
申请人： Kazuhiko Maejima , Yoshiyuki Mizoguchi , Nobuya Oyama , Hiraku Hirabayashi , Hiroki Matsukuma , Naoto Matono
发明人： Kazuhiko Maejima , Yoshiyuki Mizoguchi , Nobuya Oyama , Hiraku Hirabayashi , Hiroki Matsukuma , Naoto Matono
IPC分类号： G11B5/33 , G11B5/127
CPC分类号： G11B5/584 , G11B5/00821
摘要： A multi-channel head includes a substrate, a plurality of write elements arranged in a track width direction above the substrate in a lamination direction, and a plurality of read elements arranged in the track width direction above the plurality of write elements in the lamination direction. At least one of the plurality of write elements is offset from the others in the lamination direction. All the plurality of read elements are located higher than an uppermost one of the plurality of write elements in the lamination direction.
摘要翻译：多通道头包括基板，沿层叠方向布置在基板上方的轨道宽度方向上的多个写入元件，以及沿层叠方向在多个写入元件上方的轨道宽度方向上布置的多个读取元件。多个写入元件中的至少一个在层叠方向上偏离其它写入元件。所有多个读取元件位于层叠方向上比多个写入元件中最上面的一个更高位置。

29. 发明授权

US07903370B2 Thin-film magnetic head with coil-insulating layer that thermal expansion coefficient and young'S modulus are specified 有权
标题翻译：具有线圈绝缘层的薄膜磁头指定了热膨胀系数和年轻模量
公开(公告)号：US07903370B2
公开(公告)日：2011-03-08
申请号：US11757114
申请日：2007-06-01
申请人： Katsuki Kurihara , Hiraku Hirabayashi , Norikazu Ota
发明人： Katsuki Kurihara , Hiraku Hirabayashi , Norikazu Ota
IPC分类号： G11B5/17
CPC分类号： G11B5/3123 , G11B5/17 , G11B5/3106 , G11B5/3133 , G11B5/3136 , G11B5/6064 , G11B2005/0002
摘要： A thin-film magnetic head which suppresses the TPTP phenomenon due to the environment temperature is provided. The thin-film magnetic head includes, an electromagnetic coil element having a coil layer and coil-insulating layer, and an overcoat layer. A width of the coil-insulating layer in a track-width direction is larger than a width that is needed to insulate the whole coil layer, and is at least 46 μm, and a length of the coil-insulating layer in a direction perpendicular to the track-width direction is larger than a length that is needed to insulate the whole coil layer, and is at least 75 μm. In addition, a heat expansion coefficient of the coil-insulating layer is larger than or equal to 30×10−6/K, and a Young's modulus of the coil-insulating layer is larger than or equal to 1 GPa and smaller than or equal to 4 GPa.
摘要翻译：提供了抑制由于环境温度引起的TPTP现象的薄膜磁头。薄膜磁头包括具有线圈层和线圈绝缘层的电磁线圈元件和外涂层。线圈绝缘层在轨道宽度方向上的宽度大于使整个线圈层绝缘所需的宽度，并且至少为46μm，线圈绝缘层的垂直方向的长度轨道宽度方向大于绝缘整个线圈层所需的长度，并且至少为75μm。此外，线圈绝缘层的热膨胀系数大于或等于30×10-6 / K，线圈绝缘层的杨氏模量大于或等于1GPa且小于或等于至4 GPa。

30. 发明申请

US20110025322A1 MAGNETO-RESISTANCE EFFECT ELEMENT AND SENSOR 有权
标题翻译：磁阻效应元件和传感器
公开(公告)号：US20110025322A1
公开(公告)日：2011-02-03
申请号：US12845992
申请日：2010-07-29
申请人： Hiroshi YAMAZAKI , Hiraku Hirabayashi , Naoki Ohta
发明人： Hiroshi YAMAZAKI , Hiraku Hirabayashi , Naoki Ohta
IPC分类号： G01R33/09
CPC分类号： G01R33/091 , G01R33/0005
摘要： A magneto-resistance effect element for a sensor to sense a variation in externally applied magnetism includes a pinned layer having a fixed magnetization direction, a free layer having a magnetization direction which varies in response to an external magnetic field, and an intermediate layer provided between the pinned layer and the free layer. The pinned layer has a planar shape which is long in the fixed magnetization direction and which is short in a direction orthogonal to the fixed magnetization direction. Moreover, the pinned layer preferably has a planar shape in which the pinned layer is divided into a plurality of sections.
摘要翻译：用于感测外部施加的磁性的变化的传感器的磁电阻效应元件包括具有固定的磁化方向的固定层，具有响应于外部磁场而变化的磁化方向的自由层，以及设置在钉扎层和自由层。钉扎层具有在固定磁化方向上长的并且在与固定磁化方向正交的方向上短的平面形状。此外，被钉扎层优选具有其中被钉扎层被分成多个部分的平面形状。

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