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1. 发明专利

JPH11339227A THIN-FILM MAGNETIC HEAD AND MAGNETIC MEMORY 失效
公开(公告)号：JPH11339227A
公开(公告)日：1999-12-10
申请号：JP14559998
申请日：1998-05-27
申请人： HITACHI LTD
发明人： UEDA FUMIOMI , IMANAKA RITSU , FUKUMOTO TAKAYUKI
IPC分类号： G11B5/39
摘要： PROBLEM TO BE SOLVED: To provide a thin-film magnetic head, capable of absorbing magnetic fields from adjecent tracks and a magnetic field to be generated from a magnetid shield, when the head is made facing a medium in order to enable the information recording and reproducing of high density. SOLUTION: This head has an MR(magnetoresistance effect) element 2 and is made so as to absorb magnetic fields to be generated from adjacent tracks and a magnetic field to be generated with a magnetic shield with auxiliary shields, by arranging the auxiliary shields 7 at leteral sides which are on a flat plane roughly the same as that of a lower part magnetic shield 1. Moreover, it may be similarly constituted so that an upper part magnetic shield instead of the lower part magnetic shield 1 or to constitute both of them.

2. 发明专利

JPH10275311A MAGNETIC RELUCTANCE EFFECT TYPE MAGNETIC HEAD AND MAGNETIC DISK DEVICE USING THE HEAD 失效
公开(公告)号：JPH10275311A
公开(公告)日：1998-10-13
申请号：JP7958897
申请日：1997-03-31
申请人： HITACHI LTD
发明人： SASADA YUKIO , TANIYAMA AKIRA , KATO ATSUSHI , SHIRAKI KIYONORI , KOYANAGI HIROAKI , IMANAKA RITSU
IPC分类号： G11B5/39
摘要： PROBLEM TO BE SOLVED: To protect the structural film of read elements and to obtain a desired shape and a desired thickness by forming the protective pattern having the film, which has a high chemical resistivity and covers the difference-in-level section of the upper.lower shield film of the read elements located under a write element gap film in the process after the completion of a write element gap film forming. SOLUTION: After an upper section shield film 9 is formed and the processing of a read element section is completed, a write element gap film 10 is formed by an insulating film using the material such as alumina and a first insulating film 11, which is made of an organic insulating resin material, is then formed. During the process above, a protective pattern 17 is formed on the tilted surface and difference-in- level sections of the upper.lower shield film of the read element section to partially cover them. Then, a spiral conductive coil 12 is formed and a second insulating film 13, which is made of an organic insulating resin material, is formed. Then, an upper section magnetic film 14 is formed. Thus, the upper.lower section shield film is protected and the element process is finally completed by forming a protective film 15 made of alumina and a terminal 16.

3. 发明专利

JPH09167315A THIN FILM MAGNETIC HEAD FUNCTIONING SEPARATELY FOR RECORDING/REPRODUCING 失效
公开(公告)号：JPH09167315A
公开(公告)日：1997-06-24
申请号：JP32749795
申请日：1995-12-15
申请人： HITACHI LTD
发明人： SASADA YUKIO , IMANAKA RITSU , KOYANAGI HIROAKI , UEDA FUMIOMI
IPC分类号： G11B5/17 , G11B5/31 , G11B5/39 , G11B5/48 , G11B33/12
摘要： PROBLEM TO BE SOLVED: To reduce the resistance of a lead conductor of a reproducing element and to improve the product performance by changing a wiring position of the lead conductor connecting a magnetic transducer element of a slider end face to a terminal of a recording element. SOLUTION: A reproducing element is connected to its terminal 4a by a lead conductor 5, and a recording element is connected to its terminal 4b by a lead conductor 6. The conductor 6 is once led directly below from a magnetic transducer element. Thus, a terminal (a) is allowed to be brought close to the side of the transducer element 3 by connecting the conductor 6 to the terminal 4b via the back face side direction of a slider rather than via a terminal connecting part 14a of the terminal 4a and the conductor 5.

4. 发明专利

JPS6455716A THIN FILM MAGNETIC HEAD AND ITS MANUFACTURE 失效
公开(公告)号：JPS6455716A
公开(公告)日：1989-03-02
申请号：JP21019887
申请日：1987-08-26
申请人： HITACHI LTD
发明人： IMANAKA RITSU , KOBAYASHI TETSUO , SAITO HARUNOBU , HIRAI OSAMU , KAWAKAMI HIROJI
IPC分类号： G11B5/31
摘要： PURPOSE:To improve an electromagnetic converting function by constituting a wiring with a lower side first wiring and an upper side second wiring, forming the first wiring by a conducting material and forming the second wiring so that the first wiring can be approximately covered with the same material as the first layer magnetic film of a second magnetic core. CONSTITUTION:On the whole surface of a substrate 11, a magnetic film 71 such as a 'Permalloy(R)' film, an inorganic insulating film 72 such as an alumina and a second layer magnetic film 73 such as the 'Permalloy(R)' film are accumulated. Films 71 and 73 are formed by the same material to the same thickness. Next, a part equivalent to a magnetic gap G of the film 73, the section between a second magnetic core 7 and a second wiring 70 and a part to form an input output terminal connecting part H are removed with dry etching and patterning is executed. Further, a mask material is formed at the magnetic gap G and the core 7, the section between the core 7 in the insulating film 72 and the magnetic film 71 and the wiring 70 and a part to form the input output terminal connecting part H are removed by the dry etching and the patterning is executed. For the connecting part H, films 71, 72 and 73 are removed, a first wiring 61 becomes the exposing condition, a substrate 81 such as Cu is plated for the connecting part H, and next, an input output terminal 80 such as a protecting film 9 and Au is formed.

5. 发明专利

JPS6366710A PRODUCTION OF THIN FILM MAGNETIC HEAD 失效
公开(公告)号：JPS6366710A
公开(公告)日：1988-03-25
申请号：JP21079186
申请日：1986-09-09
申请人： HITACHI LTD
发明人： TOGAWA EISEI , SUZUKI SABURO , SAITO HARUNOBU , SUGIMOTO KENJI , IMANAKA RITSU
IPC分类号： G11B5/31
摘要： PURPOSE:To prevent the broken step of a coil and the defect of a protecting film and to obtain a reliable thin film magnetic head having a high efficiency by evading the etching in edge part where the lead terminal part of a conductor coil intersects an organic insulating film in case of forming a multilayer coil wiring and a multilayer organic insulating film. CONSTITUTION:After a lower magnetic substance 3 and a gap material 4 are formed on a substrate 1, the conductor coil 6 whose lead terminal part intersects the edges of the lower organic insulating film 5 and its lower organic insulating film 5 to be superposed, is made to pile 8 one layer or more than one layer through an intermediate organic insulating film 7 and on the top surface an upper magnetic substance 10 is formed through an upper organic insulating film 9. Especially the positions A and C of the edges where the terminal parts of the conductor coils 6 and 8 intersects the organic insulating film 5 which positions under the conductor coils 6 and 8 are covered with the organic insulating film 9 above the conductor coils so as not to be etched. Thus the broken step of the conductor coil can be prevented.

6. 发明专利

JP2000076633A Inspecting element of magnetic head and wafer 审中-公开
标题翻译：检查磁头和波浪的元素
公开(公告)号：JP2000076633A
公开(公告)日：2000-03-14
申请号：JP24519498
申请日：1998-08-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KUWAZUKA SHUNICHIRO , TAKAGI MASAYUKI , IMANAKA RITSU
IPC分类号： G11B5/39 , G11B5/455
摘要： PROBLEM TO BE SOLVED: To enable grasping the write characteristic in a state of a wafer by making up of a monitoring inductive element and a magneto-resistance effect element arranged at a fore end of an inductive element so as to detect magnetic flux generated from the inductive element.
SOLUTION: A MR sensor 3 is arranged in a gap like a reading-out element of an actual element, and the left end position is to be from a top end position C of a lower core to a starting position D of the gap depth. Write current is made to flow through a coil 8, a magnetic field is generated, and a leakage magnetic field generated between an upper core 4 and a lower shield 1 is drawn into the detecting MR sensor 3. The MR sensor 3 supplies a constant sense current through a bonding pad and a leader electrode, and a resistance value of the MR sensor changes by the leakage magnetic field from an inspecting element side and is detected as a voltage change. By detecting the intensity of the leakage magnetic field, the writing capacity of an actual element on a wafer level is grasped.
COPYRIGHT: (C)2000,JPO
摘要翻译：要解决的问题：为了通过构成设置在电感元件的前端的监控电感元件和磁阻效应元件来获得晶片状态下的写入特性，以便检测从电感元件产生的磁通量电感元件。解决方案：MR传感器3设置在与实际元件的读出元件类似的间隙中，并且左端位置将从下芯的顶端位置C到间隙深度的起始位置D. 使写入电流流过线圈8，产生磁场，并且在上芯4和下屏蔽1之间产生的泄漏磁场被吸入检测MR传感器3中.MR传感器3提供恒定的感测电流通过接合焊盘和引导电极，并且MR传感器的电阻值由检测元件侧的泄漏磁场变化，并被检测为电压变化。通过检测泄漏磁场的强度，掌握实际元件在晶片级上的写入能力。

7. 发明专利

JP2000067420A INSPECTION ELEMENT FOR MEASURING CHARACTERISTIC OF MAGNETIC HEAD AND WAFER HAVING THE SAME, AND THEIR PRODUCTION 失效
公开(公告)号：JP2000067420A
公开(公告)日：2000-03-03
申请号：JP23578098
申请日：1998-08-21
申请人： HITACHI LTD
发明人： KUWAZUKA SHUNICHIRO , TAKAGI MASAYUKI , IMANAKA RITSU
IPC分类号： G11B5/39 , G11B5/455
摘要： PROBLEM TO BE SOLVED: To provide an inspection element which is improved in measurement accuracy at a wafer level of the reproduction characteristics of a magnetic head element. SOLUTION: This inspection element consists of a monitor element having an MR sensor film 3 in a gap 2 between an upper shielding layer 4b and a lower shielding film 1b and an inductive element arranged opposedly to the front end of this monitor element in such a manner that a magnetic field is impressed to the MR sensor film 3 of the monitor element. In such a case, the lower shielding film 1b of the monitor element and a lower pole 1a of the inductive element are simultaneously formed and the gap 2 of the monitor element and the gap 2 of the inductive element are also simultaneously formed.

8. 发明专利

JP2000048326A MAGNETO-RESISTANCE EFFECT TYPE HEAD ELEMENT ASSEMBLY AND ITS PRODUCTION 失效
公开(公告)号：JP2000048326A
公开(公告)日：2000-02-18
申请号：JP21684498
申请日：1998-07-31
申请人： HITACHI LTD
发明人： IMANAKA RITSU , SHIRAKI KIYONORI , SAITO HARUNOBU , AKIMOTO HAJIME , SASAKI SHINOBU , TAI YOSHIHARU
IPC分类号： G11B5/39
摘要： PROBLEM TO BE SOLVED: To prevent insulation breakdown at the time of manufacturing a magneto- resistance effect type magnetic head element by allowing an assembly to have a first conductor in which respective magnetic shields of plural reproducing elements, respective magnetic poles of plural recording elements or respective magnetic shields of plural reproducing elements and respective magnetic poles of plural recording elements are electrically connected and a second conductor in which respective electrodes of plural reproducing elements are electrically connected to the first conductor. SOLUTION: A lower magnetic shield 3 and an upper magnetic shield 9 are electrically connected each other through the contact hole 33 of a lower gap film and an upper gap film and the upper magnetic shield 9 and an upper magnetic pole 13 are electrically connected each other through the contact hole 34 of a gap film for recording 10. In the electrode 6 of a reproducing element, a second conductor 52 in which one part of the electrode is extended is formed and the second conductor 52 is electrically connected to a first conductor 51. Since the first and second conductors are formed with the lower shield layer 3 being the lowermost layer of the constitution of a magneto-resistance effect type head element and an electrode layer, electrostatic breakdown to be generated between the layers is prevented.

9. 发明专利

JPH0944820A MAGNETORESISTIVE MAGNETIC HEAD 失效
公开(公告)号：JPH0944820A
公开(公告)日：1997-02-14
申请号：JP19720895
申请日：1995-08-02
申请人： HITACHI LTD
发明人： TANABE HIDEO , KARAKAMA YOSHIAKI , IMANAKA RITSU , OTSU TAKAYOSHI
IPC分类号： G11B5/39 , G11B5/10
摘要： PROBLEM TO BE SOLVED: To obtain a magnetoresistive magnetic head with which the destruction of a magnetoresistive element part by the static voltage suddenly impressed between the electrodes of the magnetoresistive magnetic head is prevented and which is optimum for high-density magnetic recording and reproducing, is highly reliable and has a good yield at the time of production. SOLUTION: A pair of magnetic shielding layers 3, 10, the magnetoresistive effect element part 6 and a pair of electrodes 9, 9' for passing sense current to this magnetoresistive element part and detecting the voltage change by signals are arranged on a substrate and a capacitor is constituted by disposing a dielectric substance 13' between one of a pair of there electrodes 9, 9' and one of a pair of the magnetic shielding layers 3, 10. A resistor of a resistance value larger than the resistance value of the magnetoresistive effect element part may be disposed in place of the magnetoresistive magnetic head capacitor formed to have a capacity from 5pF to 100μF.

10. 发明专利

JPH08203021A PRODUCTION OF MAGNETIC HEAD 失效
公开(公告)号：JPH08203021A
公开(公告)日：1996-08-09
申请号：JP830595
申请日：1995-01-23
申请人： HITACHI LTD , HITACHI KYOWA KOGYO KK
发明人： MASUDA KENZO , SHIINA HIROMI , OIKAWA GEN , IMANAKA RITSU
IPC分类号： G11B5/31 , G11B5/60
摘要： PURPOSE: To form high-reliability take-out electrodes on the side end face different from an end face having a magnetic conversion element without largely changing the stages of a process for producing conventional type magnetic head. CONSTITUTION: The high-reliability take-out electrode 13 is led out by forming the lower terminal of the conventional type magnetic head by Au or solder material into a columnar shape and cutting out a slider in a position along the lower terminal where the lead electrode 2 is not exposed. The high-reliability take-out electrode 13 is assured at the side end face different from the end face provided with the magnetic conversion element and a contribution is made to miniaturize the magnetic head slider. This process is attained only by the minor change of the process for producing conventional type magnetic head.

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