Beyer Law Group LLP
Current sensor
A current sensor includes a magnetoresistive element that has a stripe shape and that has a sensing axis in a certain direction. The magnetoresistive element includes element portions that are disposed so as to be spaced apart from each other in a longitudinal direction of the stripe shape, and permanent magnet portions, each of which is disposed between adjacent ones of the element portions. Each element portion has a layered structure including a free magnetic layer whose magnetization direction is changed with respect to an external magnetic field, a non-magnetic intermediate layer, and a ferromagnetic pinned layer whose magnetization direction is pinned. The permanent magnet portion includes a hard bias layer, and an electrode layer that is disposed so as to cover the hard bias layer.
ALPS GREEN DEVICES CO., LTD.
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B82Y G01R G01R G01R B82Y H01L H01F G11B
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Masamichi Yosuke Akira Yoshihiro Kenji
Saito Ide Takahashi Nishiyama Ichinohe