Title:
DETECTING DEVICE FOR MOVABLE BODY DISPLACEMENT
Document Type and Number:
Japanese Patent JP3260921
Kind Code:
B2
Abstract:
PURPOSE: To provide a detecting device for movable body displacement in which the magnetic resistance change ratio of a magnetic resistance element is high, and the positioning of the magnetic resistance element to a magnetizing surface is facilitated.
CONSTITUTION: The upper surface of a magnet rotated according to the rotation of a drive gear is alternately magnetized to S-pole and N-pole at equal angles from the center. An IC chip is arranged opposite to the magnetized surface of the magnet with a space. A magnetic resistance element is arranged on the IC chip. The magnetic resistance element is formed by alternately laminating a Co film 11 of magnetic layer having several &angst -several tens &angst and a Cu film 10 of nonmagnetic layer having several A-several tens A repeatedly.
Inventors:
Hirofumi Uenoyama
blue Kenichi
Yasutoshi Suzuki
Yoshino Yoshino
Motofumi Suzuki
blue Kenichi
Yasutoshi Suzuki
Yoshino Yoshino
Motofumi Suzuki
Application Number:
JP21063493A
Publication Date:
February 25, 2002
Filing Date:
August 25, 1993
Export Citation:
Assignee:
株式会社デンソー
株式会社豊田中央研究所
株式会社豊田中央研究所
International Classes:
G01B7/00; C23C28/00; G01D5/14; G01D5/16; G01D5/18; G01P3/487; G01R33/09; H01L27/22; (IPC1-7): G01B7/00; G01D5/18
Domestic Patent References:
| JP5299721A | ||||
| JP1121721A |
Attorney, Agent or Firm:
Hironobu Onda
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