Title:
磁気センサ
Document Type and Number:
Japanese Patent JP6819361
Kind Code:
B2
Abstract:
An object of the present invention is to provide a magnetic sensor having enhanced magnetic detection sensitivity by bending magnetic flux more largely. A magnetic sensor includes magnetic detection elements MR1 and MR2 positioned on a plane P separating a first space S1 and a second space S2, a first magnetic member 31 disposed in the first space S1 so as to be between the magnetic detection elements MR1 and MR2 when viewed in the z-direction, and a second magnetic member 32 disposed in the second space S2. The magnetic detection element MR1 is positioned between the first magnetic member 31 and a first part 32a of the second magnetic member 32 when viewed in the z-direction. The magnetic detection element MR2 is positioned between the first magnetic member 31 and a second part 32b of the second magnetic member 32 when viewed in the z-direction. According to the present invention, magnetic flux collected by the first magnetic member is attracted to the first and second parts of the second magnetic member, allowing the magnetic flux to be bent more largely. Thus, the magnetic detection sensitivity of the magnetic sensor can be enhanced.
Inventors:
Kei Tanabe
Shuichi Okawa
Hayashi
Shuichi Okawa
Hayashi
Application Number:
JP2017038950A
Publication Date:
January 27, 2021
Filing Date:
March 02, 2017
Export Citation:
Assignee:
tdk Corporation
International Classes:
G01R33/02; G01R33/09; H01L43/08
Domestic Patent References:
| JP5500785B2 | ||||
| JP2013506141A | ||||
| JP2014182096A | ||||
| JP2013172040A | ||||
| JP2012122983A |
Foreign References:
| US20130299930 | ||||
| WO2015170509A1 |
Attorney, Agent or Firm:
Mitsuhiro Washito
Ogata Japanese
Yasuyuki Kurose
Ogata Japanese
Yasuyuki Kurose