JP4739963B2 - 車載用gmr角度センサ - Google Patents
車載用gmr角度センサ Download PDFInfo
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- JP4739963B2 JP4739963B2 JP2006009660A JP2006009660A JP4739963B2 JP 4739963 B2 JP4739963 B2 JP 4739963B2 JP 2006009660 A JP2006009660 A JP 2006009660A JP 2006009660 A JP2006009660 A JP 2006009660A JP 4739963 B2 JP4739963 B2 JP 4739963B2
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- film
- angle sensor
- gmr
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- organic
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 69
- 230000005291 magnetic effect Effects 0.000 claims description 56
- 239000000377 silicon dioxide Substances 0.000 claims description 32
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 31
- 239000004020 conductor Substances 0.000 claims description 31
- 229920005989 resin Polymers 0.000 claims description 22
- 239000011347 resin Substances 0.000 claims description 22
- 239000011241 protective layer Substances 0.000 claims description 21
- 230000000694 effects Effects 0.000 claims description 12
- 229920001296 polysiloxane Polymers 0.000 claims description 8
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 239000003963 antioxidant agent Substances 0.000 claims description 5
- 230000003078 antioxidant effect Effects 0.000 claims description 5
- 238000000059 patterning Methods 0.000 claims description 4
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- 230000004044 response Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 2
- 239000012044 organic layer Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 83
- 229910045601 alloy Inorganic materials 0.000 description 15
- 239000000956 alloy Substances 0.000 description 15
- 230000001681 protective effect Effects 0.000 description 12
- 229920002050 silicone resin Polymers 0.000 description 12
- 230000008859 change Effects 0.000 description 10
- 230000005415 magnetization Effects 0.000 description 10
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 9
- 230000005290 antiferromagnetic effect Effects 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 5
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- 238000000034 method Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910019233 CoFeNi Inorganic materials 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910003321 CoFe Inorganic materials 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000593 degrading effect Effects 0.000 description 3
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 3
- 230000005293 ferrimagnetic effect Effects 0.000 description 3
- 125000004430 oxygen atom Chemical group O* 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 239000009719 polyimide resin Substances 0.000 description 3
- -1 silicon alkoxide Chemical class 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 229910002441 CoNi Inorganic materials 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
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- 229910052703 rhodium Inorganic materials 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 229910019041 PtMn Inorganic materials 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
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- 238000006731 degradation reaction Methods 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
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- 239000003302 ferromagnetic material Substances 0.000 description 1
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- 229910010272 inorganic material Inorganic materials 0.000 description 1
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- 238000010030 laminating Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
- G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Hall/Mr Elements (AREA)
- Measuring Magnetic Variables (AREA)
Description
前記保護層は、シリカ(SiO 2 )膜と、前記シリカ膜の上及び下の少なくとも一方に積層した酸化防止膜であるアルミナ(Al 2 O 3 )膜とで形成され前記巨大磁気抵抗効果素子及び前記リード導体の絶縁性を確保する無機膜と、シリコーン系の有機膜との積層構造を有して形成されていることを特徴としている。
2 回転軸
3 回転磁石
10 GMR素子
11 基板
12 反強磁性層
13 固定磁性層
14 非磁性導電層
15 フリー磁性層
16 キャップ層
18 絶縁層
30 リード導体
31 Au電極パッド
40 保護層
41 無機膜
42 アルミナ(Al2O3)膜
43 シリカ(SiO2)膜
45 有機膜
Claims (7)
- 外部磁界に応じて素子抵抗が変化する巨大磁気抵抗効果素子と、前記巨大磁気抵抗効果素子に接続したリード導体と、前記巨大磁気抵抗効果素子及び前記リード導体上に形成されて前記巨大磁気抵抗効果素子及び前記リード導体を封止する保護層とを備えた車載用GMR角度センサにおいて、
前記保護層は、シリカ(SiO 2 )膜と、前記シリカ膜の上及び下の少なくとも一方に積層した酸化防止膜であるアルミナ(Al 2 O 3 )膜とで形成され前記巨大磁気抵抗効果素子及び前記リード導体の絶縁性を確保する無機膜と、シリコーン系の有機膜との積層構造を有して形成されていることを特徴とする車載用GMR角度センサ。 - 前記有機膜は、200〜250℃で硬化可能なシリコーン系感光樹脂によって形成される請求項1記載の車載用GMR角度センサ。
- 前記有機膜は、少なくとも5μmの厚みを有する請求項1または2記載の車載用GMR角度センサ。
- 前記有機膜は、フォトリソグラフィを利用したパターニングにより形成されている請求項1ないし3のいずれか1項に記載の車載用GMR角度センサ。
- 前記アルミナ膜の膜厚はシリカ膜の膜厚より薄い請求項1ないし4のいずれか1項に記載の車載用GMR角度センサ。
- 前記シリカ膜の膜厚は3000〜4000Åである請求項1ないし5のいずれか1項に記載の車載用GMR角度センサ。
- 前記巨大磁気抵抗効果素子及び前記リード導体上に前記無機膜が形成され、前記無機膜上に前記有機膜が形成される請求項1ないし6のいずれか1項に記載の車載用GMR角度センサ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006009660A JP4739963B2 (ja) | 2006-01-18 | 2006-01-18 | 車載用gmr角度センサ |
US11/651,899 US7405560B2 (en) | 2006-01-18 | 2007-01-09 | GMR angle sensor for vehicles |
DE602007001282T DE602007001282D1 (de) | 2006-01-18 | 2007-01-15 | GMR-Winkelsensor für Fahrzeuge |
EP07000690A EP1813917B1 (en) | 2006-01-18 | 2007-01-15 | GMR Angle sensor for vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006009660A JP4739963B2 (ja) | 2006-01-18 | 2006-01-18 | 車載用gmr角度センサ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007194322A JP2007194322A (ja) | 2007-08-02 |
JP4739963B2 true JP4739963B2 (ja) | 2011-08-03 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006009660A Active JP4739963B2 (ja) | 2006-01-18 | 2006-01-18 | 車載用gmr角度センサ |
Country Status (4)
Country | Link |
---|---|
US (1) | US7405560B2 (ja) |
EP (1) | EP1813917B1 (ja) |
JP (1) | JP4739963B2 (ja) |
DE (1) | DE602007001282D1 (ja) |
Families Citing this family (27)
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DE102006018627A1 (de) * | 2006-04-21 | 2007-10-25 | Siemens Ag | Magnetischer Drehwinkelgeber |
JP4485499B2 (ja) * | 2006-09-04 | 2010-06-23 | アルプス電気株式会社 | 磁気検出装置およびその製造方法 |
JP2008249556A (ja) * | 2007-03-30 | 2008-10-16 | Tdk Corp | 磁気センサ |
US20090066465A1 (en) * | 2007-09-06 | 2009-03-12 | Udo Ausserlechner | Magnetic core for testing magnetic sensors |
US7923987B2 (en) | 2007-10-08 | 2011-04-12 | Infineon Technologies Ag | Magnetic sensor integrated circuit with test conductor |
US8559139B2 (en) | 2007-12-14 | 2013-10-15 | Intel Mobile Communications GmbH | Sensor module and method for manufacturing a sensor module |
JP5021764B2 (ja) * | 2007-12-14 | 2012-09-12 | アルプス電気株式会社 | 磁気センサ |
US8857464B2 (en) | 2008-01-30 | 2014-10-14 | Flowserve Management Company | Valve actuators having magnetic angle sensors |
US7965077B2 (en) * | 2008-05-08 | 2011-06-21 | Everspin Technologies, Inc. | Two-axis magnetic field sensor with multiple pinning directions |
EP2283351B1 (en) * | 2008-05-14 | 2019-02-27 | Koninklijke Philips N.V. | Method and apparatus for measuring oxygen concentration using giant magnetoresistance |
US8058866B2 (en) | 2008-09-08 | 2011-11-15 | Infineon Technologies Ag | Off-center angle measurement system |
US9606194B2 (en) | 2008-09-08 | 2017-03-28 | Infineon Technologies Ag | Off-center angle measurement system |
US8269486B2 (en) * | 2008-11-12 | 2012-09-18 | Infineon Technologies Ag | Magnetic sensor system and method |
US9201123B2 (en) * | 2011-11-04 | 2015-12-01 | Infineon Technologies Ag | Magnetic sensor device and a method for fabricating the same |
US9121880B2 (en) | 2011-11-04 | 2015-09-01 | Infineon Technologies Ag | Magnetic sensor device |
CN104104376B (zh) * | 2013-04-01 | 2018-01-02 | 江苏多维科技有限公司 | 推挽式芯片翻转半桥磁阻开关 |
US9529060B2 (en) | 2014-01-09 | 2016-12-27 | Allegro Microsystems, Llc | Magnetoresistance element with improved response to magnetic fields |
JP6466730B2 (ja) * | 2015-02-10 | 2019-02-06 | アルプス電気株式会社 | 磁気センサ |
US9812637B2 (en) | 2015-06-05 | 2017-11-07 | Allegro Microsystems, Llc | Spin valve magnetoresistance element with improved response to magnetic fields |
JP6759751B2 (ja) | 2016-06-23 | 2020-09-23 | 日立金属株式会社 | 回転検出装置及びセンサ付きケーブル |
JP2018072026A (ja) | 2016-10-25 | 2018-05-10 | Tdk株式会社 | 磁場検出装置 |
US11022661B2 (en) | 2017-05-19 | 2021-06-01 | Allegro Microsystems, Llc | Magnetoresistance element with increased operational range |
US10620279B2 (en) | 2017-05-19 | 2020-04-14 | Allegro Microsystems, Llc | Magnetoresistance element with increased operational range |
CN108955509B (zh) * | 2018-09-19 | 2024-04-09 | 湖北米朗科技股份有限公司 | 一种具有高密封性能的磁拖式碳膜直线位移传感器 |
US10825984B1 (en) | 2019-08-21 | 2020-11-03 | Globalfoundries Singapore Pte. Ltd. | Sensors including dummy elements arranged about a sensing element |
JP7434896B2 (ja) * | 2019-12-27 | 2024-02-21 | 株式会社レゾナック | 磁気センサおよび磁気センサの製造方法 |
US11719771B1 (en) | 2022-06-02 | 2023-08-08 | Allegro Microsystems, Llc | Magnetoresistive sensor having seed layer hysteresis suppression |
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2006
- 2006-01-18 JP JP2006009660A patent/JP4739963B2/ja active Active
-
2007
- 2007-01-09 US US11/651,899 patent/US7405560B2/en active Active
- 2007-01-15 EP EP07000690A patent/EP1813917B1/en active Active
- 2007-01-15 DE DE602007001282T patent/DE602007001282D1/de active Active
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WO2001046708A1 (fr) * | 1999-12-22 | 2001-06-28 | Mitsubichi Denki Kabushiki Kaisha | Equipement de detection et son procede de fabrication |
WO2004025745A1 (ja) * | 2002-09-13 | 2004-03-25 | Matsushita Electric Industrial Co., Ltd. | 磁気抵抗効果素子およびこの製造方法並びに使用方法 |
JP2004247408A (ja) * | 2003-02-12 | 2004-09-02 | Sony Precision Technology Inc | 磁気検出センサ |
Also Published As
Publication number | Publication date |
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US7405560B2 (en) | 2008-07-29 |
DE602007001282D1 (de) | 2009-07-30 |
EP1813917B1 (en) | 2009-06-17 |
US20070164734A1 (en) | 2007-07-19 |
JP2007194322A (ja) | 2007-08-02 |
EP1813917A1 (en) | 2007-08-01 |
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