The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 06, 2015

Filed:

May. 20, 2014
Applicant:

Tdk Corporation, Tokyo, JP;

Inventors:

Katsuyuki Nakada, Tokyo, JP;

Takahiro Suwa, Tokyo, JP;

Kuniyasu Ito, Tokyo, JP;

Masato Takahashi, Tokyo, JP;

Assignee:

TDK CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/39 (2006.01); H01L 43/02 (2006.01); H01L 43/08 (2006.01);
U.S. Cl.
CPC ...
H01L 43/02 (2013.01); G11B 5/3906 (2013.01); G11B 5/3909 (2013.01); G11B 5/3922 (2013.01); G11B 5/3932 (2013.01); G11B 5/3941 (2013.01); H01L 43/08 (2013.01); G11B 2005/3996 (2013.01);
Abstract

A magnetoresistive effect element includes a pair of first soft magnetic layers that are arranged opposite to each other so as to sandwich a magnetoresistive effect film; a second soft magnetic layer; and a coil that is windingly formed about the second soft magnetic layer. When a rear end region cross-sectional area of the first soft magnetic layers is defined as S1r and a tip end region cross-sectional area of the second soft magnetic layer is defined as S2f, S2f>S1r is established, and when a tip end width of the first soft magnetic layers is defined as W1f and a rear end width of the first soft magnetic layers is defined as W1r, W1r>W1f is established.


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