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:
Jun. 15, 2021
Filed:
Mar. 06, 2020
Applicant:
Ablic Inc., Chiba, JP;
Inventor:
Hirotaka Uemura, Chiba, JP;
Assignee:
ABLIC INC., Chiba, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 33/038 (2006.01); G01R 33/00 (2006.01);
U.S. Cl.
CPC ...
G01R 33/038 (2013.01); G01R 33/0047 (2013.01); G01R 33/0076 (2013.01);
Abstract
A magnetic substance detection sensor includes a support substrate, a semiconductor chip provided on the support substrate and having a magnetic field detection element, a permanent magnet provided on the support substrate, and a resin encapsulation layer covering the semiconductor chip and the permanent magnet. The resin encapsulation layer has a first resin layer exposing the permanent magnet and covering the semiconductor chip, and a second resin layer continuously covering the permanent magnet and the first resin layer, and stress caused by curing contraction of the second resin layer is smaller than that of the first resin layer.