Magnetic sensor and magnetic sensor module

Details Magnetic sensor and magnetic sensor module Magnetic sensor and magnetic sensor module

2010-06-21

2010-12-21

Whittington, Kenneth J (Department: 2858)

Electricity: measuring and testing

Magnetic

Magnetometers

Reexamination Certificate

active

07855556

ABSTRACT:
A magnetic sensor including a magnetoresistive effect element has the following structure. Element units each having an element width W1and an element length L1perpendicular to the element width W1and producing a magnetoresistive effect in which electrical resistance changes in response to an external magnetic field are arranged in an element-length direction with a space therebetween. An intermediate permanent magnet layer is disposed in the space, and the element units are connected to each other with the intermediate permanent magnet layer therebetween to form a connected-element body. A plurality of the connected-element bodies are arranged so as to be adjacent to one another in an element-width direction with a space therebetween, the ends of the connected-element bodies are connected to each other with an outer permanent magnet layer therebetween to form a magnetoresistive effect element having a meandering shape.

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patent: 6326782 (2001-12-01), Schroeder
patent: 6335675 (2002-01-01), Kakinuma et al.
patent: 2006/0139025 (2006-06-01), Jeffers
patent: 05281319 (1993-10-01), None
patent: 2005-183614 (2005-07-01), None
International Search Report issued in corresponding PCT Application No. PCT/JP2008/072919; mailed Mar. 17, 2009.

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