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1. 发明专利

JP2001209909A RECORDING/REPRODUCING SEPARATED MAGNETIC HEAD 失效
公开(公告)号：JP2001209909A
公开(公告)日：2001-08-03
申请号：JP2000018473
申请日：2000-01-27
申请人： HITACHI METALS LTD
发明人： MIMA HIROYUKI , TORII ZENZO , MASUDA KENZO , HARADA HITOSHI , MEGURO SATOSHI , FUJII SHIGEO , HATANO HIROYUKI , MUTO KENJI , IFUKU TOSHIHIRO
IPC分类号： G11B5/31 , G11B5/39
摘要： PROBLEM TO BE SOLVED: To realize the miniaturization, the higher capacity and the higher transfer rate of a recording/reproducing separated magnetic head by narrowing track width, controlling the depth of a gap and enhancing heat radiation. SOLUTION: A recording head part is formed in the following steps. A lower magnetic pole is constituted of two layers of magnetic material and a gap apex is formed at a projecting part of the lower magnetic pole. A second lower magnetic pole layer having a width as same as the width of a magnetic pole part (track width) is formed and the magnetic pole part, a lowermost layer coil and a magnetic pole cylinder are formed on the same plane. At least the upper surface of a rear part upper layer coil comes into direct contact with a protective film.

2. 发明专利

JP2000322715A MAGNETO-RESISTANCE EFFECT TYPE MAGNETIC HEAD AND ITS MANUFACTURE 失效
公开(公告)号：JP2000322715A
公开(公告)日：2000-11-24
申请号：JP23373399
申请日：1999-08-20
申请人： HITACHI METALS LTD
发明人： MITSUMATA CHIHARU , SHIMOE OSAMU , MEGURO SATOSHI
IPC分类号： G11B5/39 , G11B5/40
摘要： PROBLEM TO BE SOLVED: To prevent dielectric breakdown by electrically conducting one of the electrode films for guiding an electric current to a reproducing element to a shield through a fuse to be melted and by releasing a short-circuit in an arbitrary process. SOLUTION: In the manufacturing process of a reproducing element, the electrode films 6a, 6b formed at both ends of a SAL bias type MR element 5 are connected to conductive films 6c, 6d respectively through fuses 5a, 5b. The conductive films 6c, 6d are connected to a bottom shield and mid a shield respectively through contacting terminals 9a, 9b. The electrode films 6a, 6b are provided with terminals 10a, 10b. These terminals 9a, 9b, 10a, 10b are each connected to an electrode pad formed by plating. By a fuse melting device, the fuse 5b is melted by electric current flowing in such route as the terminal 9a/fuse 5b/terminal 10b, while the fuse 5a in such route as the terminal 9a/fuse 5a/terminal 10a.

3. 发明专利

JP2000285422A HEAD GIMBALS ASSEMBLY AND ITS MANUFACTURE 失效
公开(公告)号：JP2000285422A
公开(公告)日：2000-10-13
申请号：JP9058599
申请日：1999-03-31
申请人： HITACHI METALS LTD
发明人： MITSUMATA CHIHARU , SHIMOE OSAMU , MEGURO SATOSHI
IPC分类号： G11B5/39 , G11B5/40 , G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To provide a structure which can prevent an electrostatic breakdown easy to generate in accordance with the miniaturization of an MR head between a reproduction element and a magnetic shield film even in an assembly process for a head gimbals assembly as well as a preceding wafer process. SOLUTION: A used head gimbals assembly 8 has a slider 11 having a magnetoresistive element, and a load beam 10 for supporting the slider 11. The slider 11 has four or more terminals, and the load beam 10 has a printed wiring 7. One side of the printed wiring 7 is connected to the terminals and the other end of the printed wiring 7 has four or more terminals.

4. 发明专利

JP2000222710A MAGNETO-RESISTIVE THIN-FILM MAGNETIC HEAD AND ITS PRODUCTION 失效
公开(公告)号：JP2000222710A
公开(公告)日：2000-08-11
申请号：JP2411199
申请日：1999-02-01
申请人： HITACHI METALS LTD
发明人： MEGURO SATOSHI , FUJII SHIGEO , MIMA HIROYUKI , IFUKU TOSHIHIRO , FURUICHI SHINJI
IPC分类号： G11B5/39
摘要： PROBLEM TO BE SOLVED: To assure the stable insulation characteristic of an electrode film and an upper shielding film by subjecting the ends of a voltage resistant protective film formed in the state of resist masking of a stencil shape used in a stage for connecting electrodes and the end of a magnetosensitive part to self-alignment so as to approximately align both. SOLUTION: This magnetic head consists of the structure obtained by holding the magnetic domain control film 418 and electrode film 419 installed on both sides of an MR element part 425 between upper and lower shielding films 413 and 423 via gap insulating layer films 414 and 422 and connecting the electrode to both flanks of the MR element part 425. The magnetosensitive part is insulated by an upper gap insulating film 422 and is insulated from an upper shielding film 423 by the voltage resistant protective film 420 and the upper gap insulating film 422. The voltage resistant protective film 420 is formed in the state of resist masking of the stencil shape used in the stage for connecting the magnetic domain control film 418 and the electrode film 419 to both flanks of the MR element part 425. The end (c) of the magnetosensitive part and the ends (d) and d' of the voltage resistant protective film are subjected to self-alignment so as to be approximately aligned.

5. 发明专利

JP2001143225A MAGNETO-RESISTIVE EFFECT TYPE MAGNETIC HEAD, AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2001143225A
公开(公告)日：2001-05-25
申请号：JP32518499
申请日：1999-11-16
申请人： HITACHI METALS LTD
发明人： MITSUMATA CHIHARU , SHIMOE OSAMU , MEGURO SATOSHI
IPC分类号： G11B5/31 , G11B5/39 , G11B5/40
摘要： PROBLEM TO BE SOLVED: To provide an MR head capable of preventing dielectric breakdown which easily occurs between a reproducing element and a shield following the miniaturization of the MR head, without any dependence on a water or slider cutting process for opening a short-circuiting circuit. SOLUTION: This magneto-resistive effect type magnetic head is constructed in such a manner that a reproducing element having a magneto-resistive effect is provided between two shields by interpolating an insulating film, and at least, one of electrode films for guiding a current to the reproducing element is electrically conductive to the shields through a fuse irradiated with a laser to be cut.

6. 发明专利

JP2000076626A Magnetoresistive effect head and its manufacture 审中-公开
标题翻译：磁电效应及其制造
公开(公告)号：JP2000076626A
公开(公告)日：2000-03-14
申请号：JP24268498
申请日：1998-08-28
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： MEGURO SATOSHI , KOBAYASHI TOSHIO , SHIMOE OSAMU
IPC分类号： G11B5/39
摘要： PROBLEM TO BE SOLVED: To prevent the electrostatic breakdown of a magneto resistive effect(MRE) element, in an MRE head, by releasing static electricity caused between the terminals of the MRE element and between the magnetic shields during the manufacture and the use.
SOLUTION: The device is such that an MRE head part and an induction head part are integrally laminated on an insulated substrate 10, that a semiconductor 20 is provided between the insulated substrate and the thin film coil of the induction head, and that the semiconductor 20 is designed to have a diode, in which the forward and the reverse directions are parallelly connected, between the terminals of the MRE element 13 and a diode, in which the forward and the reverse directions are serially connected, between the magnetic shields 12, 15. In addition, before the MRE head part is formed, the semiconductor is made on the insulated substrate 10.
COPYRIGHT: (C)2000,JPO
摘要翻译：要解决的问题：为了防止MRE头中的磁阻效应（MRE）元件的静电击穿，通过在制造和使用期间释放在MRE元件的端子和磁屏蔽之间引起的静电。解决方案：该装置使得MRE头部和感应头部分整体地层压在绝缘基板10上，半导体20设置在绝缘基板和感应头的薄膜线圈之间，并且半导体20 被设计为在MRE元件13的端子和其间的正向和反向串联连接的二极管之间，在磁屏蔽12,15之间具有二极管，其中正向和反向平行连接另外，在形成MRE头部之前，在绝缘基板10上形成半导体。

7. 发明专利

JP2001023116A RECORDING/REPRODUCING SEPARATION TYPE THIN FILM MAGNETIC HEAD AND ITS MANUFACTURE 失效
公开(公告)号：JP2001023116A
公开(公告)日：2001-01-26
申请号：JP18853099
申请日：1999-07-02
申请人： HITACHI METALS LTD
发明人： KOMORIYA SUSUMU , MEGURO SATOSHI , MITSUMATA CHIHARU
IPC分类号： G11B5/31 , G11B5/39
摘要： PROBLEM TO BE SOLVED: To improve the characteristics of the recording head part of a recording/reproducing separation type thin film magnetic head. SOLUTION: A groove is formed at a position in a lower magnetic pole 14 which corresponds to a magnetic gap depth and, after the groove is covered with gap layer material, the material is processed by a CMP method to form a required gap layer 13. Further, a coil is formed directly on the gap layer 13 and an upper magnetic pole 16 comprising a front pole 17, a yoke 19 and a rear pole 18 is formed to complete a recording head. With this constitution, the magnetic gap depth can be univalently defined and, further, heat generated by the coil can be radiated efficiently, so that a recording/reproducing separation type thin film magnetic head with satisfactory characteristics and high reliability can be provided.

8. 发明专利

JP2000339637A PRODUCTION OF MAGNETORESISTANCE EFFECT HEAD/GIANT MAGNETORESISTANCE EFFECT HEAD 失效
公开(公告)号：JP2000339637A
公开(公告)日：2000-12-08
申请号：JP15321399
申请日：1999-06-01
申请人： HITACHI METALS LTD
发明人： MEGURO SATOSHI , IFUKU TOSHIHIRO , MIMA HIROYUKI , FUJII SHIGEO , MUTO KENJI , TAKAHASHI HIDEJI , TOMITANI TADASHI
IPC分类号： G11B5/39
摘要： PROBLEM TO BE SOLVED: To increase the breakdown voltage of a gap layer and to improve the yield against breakdown by forming a metal protective film on a second gap layer and removing an oxide layer on the surface of a thin film lead. SOLUTION: A seed second film is formed all over the surface by sputtering. Before sputtering, an oxide layer 24 on a lead second layer 22 is removed by ion milling, and then a resist is formed thereon except for an intermediate shield part and a part to form a conductor. Then an intermediate shield layer 65 and a conductor 66 are grown on the seed film, the resist is removed, and the seed film in an area except for the intermediate shield and the conductor part is removed by ion milling to complete the process to form the intermediate shield. Then the surface is sputtered and flattened by chemical mechanical polishing, and an inductive head is formed thereon. Thus, the ion milling process to remove the oxide layer on the lead second layer is performed after a seed first film is formed.

9. 发明专利

JP2001236614A COMBINED MAGNETIC HEAD 失效
公开(公告)号：JP2001236614A
公开(公告)日：2001-08-31
申请号：JP2000045477
申请日：2000-02-23
申请人： HITACHI METALS LTD
发明人： MEGURO SATOSHI , TORII ZENZO , MASUDA KENZO , FUJII SHIGEO , MIMA HIROYUKI , IFUKU TOSHIHIRO , MUTO KENJI
IPC分类号： G01R33/09 , G11B5/31 , G11B5/39 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To provide a combined magnetic head having a huge magneto-resistive head and an inductive head layered on a non-magnetic insulating substrate used as a head slider, wherein the size of a lower magnetic shield or an upper magnetic shield (lower magnetic core) is reduced up to the size magnetically required to form a structure by which a heat radiating effect can be obtained. SOLUTION: The combined magnetic head has a structure wherein a heat radiating fin made of copper connected to the magnetic shield is provided at the position extended from at least one of the lower and upper magnetic shields of the huge magneto-resistive head.

10. 发明专利

JP2001056913A MAGNETO-RESISTANCE EFFECT HEAD AND ITS MANUFACTURE 失效
公开(公告)号：JP2001056913A
公开(公告)日：2001-02-27
申请号：JP22704199
申请日：1999-08-11
申请人： HITACHI METALS LTD
发明人： MEGURO SATOSHI , FUJII SHIGEO , MUTO KENJI , MIMA HIROYUKI , IFUKU TOSHIHIRO
IPC分类号： G11B5/39 , G11B5/40
摘要： PROBLEM TO BE SOLVED: To obtain a magneto-resistance effect head capable of discharging static electricity to prevent static breakdown during manufacture and/or usage and its manufacturing method. SOLUTION: In this magneto-resistance effect head, vertical diodes 56 and 58 constituted of P type and N type semiconductor thin films laminated are inserted between leads 40 and 40' of a magneto-resistance effect element or between the leads 40 and 40' and a magnetic shield so as to connect them. The magneto-resistance effect head having these vertical diodes 56 and 58 is manufactured by a thin film art and this vertical diodes 56 and 58 can be manufactured by a spot laser annealing treatment.

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