Strain sensor element and blood pressure sensor

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United States of America Patent

PATENT NO 9999356
SERIAL NO

14813783

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Abstract

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A strain sensor element comprises a laminated film which has a magnetic free layer, a spacer layer, and a magnetic reference layer. The free layer has a variable magnetization direction and a out-of-plane magnetization direction. The reference layer has a variable magnetization direction which is pinned more strongly than the magnetization of the free layer. The spacer layer provided between the free layer and the reference layer. A pair of electrodes is provided with a plane of the laminated film. A substrate is provided with either of the pair electrodes and can be strained. The rotation angle of the magnetization of the free layer is different from the rotation angle of the magnetization of the reference layer when the substrate is distorted. Electrical resistance is changed depending on the magnetization angle between the free layer and the reference layer, which allows the element to operate as a strain sensor.

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Patent Owner(s)

Patent OwnerAddress
KABUSHIKI KAISHA TOSHIBAMINATO-KU TOKYO 105-0023

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fuji, Yoshihiko Kanagawa-ken, JP 141 1569
Fukuzawa, Hideaki Kanagawa-ken, JP 225 3236
Giddings, Alexander Devin Kanagawa-ken, JP 10 139
Hara, Michiko Kanagawa-ken, JP 100 1143
Murakami, Shuichi Tokyo, JP 160 2372
Yuasa, Hiromi Kanagawa-ken, JP 136 2704

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