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.
Patent No.:
Date of Patent:
Jan. 12, 2021
Filed:
May. 22, 2017
Tdk Corporation, Tokyo, JP;
Kentaro Ushioda, Tokyo, JP;
Makoto Kameno, Tokyo, JP;
Chengbin Lin, Tokyo, JP;
Shuichi Okawa, Tokyo, JP;
TDK CORPORATION, Tokyo, JP;
Abstract
An object of the present invention is to enhance detection accuracy of a magnetic sensor having four bridge-connected magnetic sensing elements. A magnetic sensor includes magnetic layers-provided on a surface of the sensor substrateand bridge-connected magnetic sensing elements R-R. The magnetic layerincludes a main area Mand a converging area Shaving a width gradually reduced with increasing distance from the main area M, the magnetic layerincludes a main area Mand converging areas S, Seach having a width gradually reduced with increasing distance from the main area M, and the magnetic layerincludes a main area Mand converging areas S, Seach having a width gradually reduced with increasing distance from the main area M. The end portions of the converging areas S-Sand the end portions of the converging areas S-Sface each other, respectively, through gaps G-G, respectively. The magnetic sensing elements R-Rare disposed on magnetic paths formed by the gaps G-G, respectively. According to the present invention, detection accuracy is enhanced because a magnetic flux generated by current flowing in one magnetic sensing element does not affect the other sensing element.