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:
Feb. 04, 2025
Filed:
Dec. 22, 2021
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Hideaki Fukuzawa, Tokyo, JP;
Dai Matsuoka, Tokyo, JP;
Tomohito Mizuno, Tokyo, JP;
Tetsuya Shibata, Tokyo, JP;
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/146 (2006.01); H10B 61/00 (2023.01); H10N 50/10 (2023.01); H10N 50/80 (2023.01); G11C 11/16 (2006.01);
U.S. Cl.
CPC ...
H01L 27/14621 (2013.01); H10B 61/00 (2023.02); H10N 50/10 (2023.02); H10N 50/80 (2023.02); G11C 11/161 (2013.01);
Abstract
An optical sensor includes a wavelength filter configured to transmit light in a specific wavelength range and a magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer. The light passing through the wavelength filter is applied to the magnetic element and the light applied to the magnetic element is detected.