Source: http://www.google.com/patents/US7417269?ie=ISO-8859-1&dq=6978253
Timestamp: 2014-12-20 23:06:16
Document Index: 537576237

Matched Legal Cases: ['application No. 2003', 'application No. 2003', 'Application No. 2002', 'Application No. 2002', 'Application No. 2002', 'application No. 10', 'application No. 2003', 'application No. 2003', 'application No. 2003', 'Application No. 2002', 'application No. 2003', 'Application No. 200310118343']

Patent US7417269 - Magnetic impedance device, sensor apparatus using the same and method for ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA magnetic sensor apparatus includes a semiconductor substrate and a magnetic impedance device for detecting a magnetic field. The magnetic impedance device is disposed on the substrate. The magnetic sensor apparatus has minimum size and is made with low manufacturing cost. Here, the magnetic impedance...http://www.google.com/patents/US7417269?utm_source=gb-gplus-sharePatent US7417269 - Magnetic impedance device, sensor apparatus using the same and method for manufacturing the sameAdvanced Patent SearchPublication numberUS7417269 B2Publication typeGrantApplication numberUS 10/717,902Publication dateAug 26, 2008Filing dateNov 21, 2003Priority dateNov 21, 2002Fee statusPaidAlso published asCN1503230A, CN1790045A, CN100468523C, CN100526904C, DE10354444A1, DE10354444B4, US7582489, US20040131887, US20070108970, US20080145956Publication number10717902, 717902, US 7417269 B2, US 7417269B2, US-B2-7417269, US7417269 B2, US7417269B2InventorsKenichi Ao, Yasutoshi Suzuki, Hideya Yamadera, Norikazu Ohta, Hirofumi FunahashiOriginal AssigneeDenso CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (45), Non-Patent Citations (15), Classifications (14), Legal Events (2) External Links: USPTO, USPTO Assignment, EspacenetMagnetic impedance device, sensor apparatus using the same and method for manufacturing the sameUS 7417269 B2Abstract A magnetic sensor apparatus includes a semiconductor substrate and a magnetic impedance device for detecting a magnetic field. The magnetic impedance device is disposed on the substrate. The magnetic sensor apparatus has minimum size and is made with low manufacturing cost. Here, the magnetic impedance device detects a magnetic field in such a manner that impedance of the device is changed in accordance with the magnetic filed when an alternating current is applied to the device and the impedance is measured by an external electric circuit.
the magnetic impedance device is made of Ni�Fe series alloy.
wherein the magnetic impedance device includes a magnetic layer made of Ni�Fe series alloy film,
wherein the Ni�Fe series alloy film has a composition such that a content of Ni in the Ni�Fe series alloy film is in a range between 65 wt % and 90 wt %, and/or a content of Fe in the Ni�Fe series alloy film is in a range between 10 wt % and 35 wt %.
wherein the Ni�Fe series alloy film has a plurality of grains, dimensions of which are in a range between 1 nm and 1 μm.
wherein the Ni�Fe series alloy film has a composition such that a content of Ni in the Ni�Fe series alloy film is in a range between 65 wt % and 90 wt %, and/or a content of Fe in the Ni�Fe series alloy film is in a range between 10 wt % and 35 wt %,
wherein the Ni�Fe series alloy film has a plurality of grains, dimensions of which are equal to or smaller than 100 nm, and
CROSS REFERENCE TO RELATED APPLICATIONS This application is based on Japanese Patent Applications No. 2002-337416 filed on Nov. 21, 2002, No. 2002-337417 filed on Nov. 21, 2002, No. 2003-58899 filed on Mar. 5, 2003, No. 2003-58900 filed on Mar. 5, 2003, and No. 2003-73900 filed on Mar. 18, 2003, the disclosures of which are incorporated herein by reference.
Although the magnetic layer id made of NI-Fe series alloy film, the magnetic layer 26 can be formed of linear shaped or thin film type amorphous alloy such as Co�Nb�Zr alloy, Co�Si�B alloy, and the like. There is no limitation of the shape of the magnetic layer 26.
Then, Ni�Fe alloy composing the device 301 is deposited on the substrate 322 with using sputtering method under magnetic field. The thickness of the Ni�Fe alloy deposited on the substrate 322 is in a range between 1 μm and 5 μm . Since the top end 328 a of the wiring layer 328 is formed to be a tapered shape, the device 301, i.e., the Ni�Fe alloy film is limited from cutting caused by fault of step coverage.
Next, the Ni�Fe alloy film composing the device 301 is deposited with using the sputtering method so that the thickness of the Ni�Fe alloy film is in a range between 1 μm and 5 μm . Then, to improve the magnetic properties of the device 301, the apparatus 306 is annealed at about 300� C. in vacuum under magnetic field. At last, the protection layer 332 made of silicon nitride, silicon dioxide and the like is formed on the substrate 322.
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No. 11/650,929.14Office Action mailed on Oct. 9, 2007 in the corresponding divisional U.S. Appl. No. 11/650,929.15Second Office Action issued Nov. 16, 2007 in corresponding Chinese Patent Application No. 200310118343X (and English translation).Classifications U.S. Classification257/241, 257/E27.046International ClassificationG01P3/487, H01L27/148, H01L29/768, H01F10/14, G01R33/02, H01L43/08Cooperative ClassificationH01L27/22, G01R33/02, G01P3/487European ClassificationG01P3/487, G01R33/02, H01L27/22Legal EventsDateCodeEventDescriptionSep 21, 2011FPAYFee paymentYear of fee payment: 4Mar 9, 2004ASAssignmentOwner name: DENSO CORPORATION, JAPANFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:AO, KENICHI;SUZUKI, YASUTOSHI;YAMADERA, HIDEYA;AND OTHERS;REEL/FRAME:015067/0839;SIGNING DATES FROM 20031107 TO 20031119RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google