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. 31, 2017
Filed:
Jan. 22, 2015
Applicant:
Seiko Instruments Inc., Chiba-shi, Chiba, JP;
Inventor:
Yuichiro Kitajima, Chiba, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 23/525 (2006.01);
U.S. Cl.
CPC ...
H01L 23/5258 (2013.01); H01L 2924/0002 (2013.01);
Abstract
A semiconductor device includes a fuse element that can be cut and removed by laser irradiation. The fuse element has a large width portion having a large sectional area to be irradiated with a laser spot, and two small width portions having a small sectional area connected to opposite sides of the large width portion. Penetration of moisture is suppressed even after cutting of the fuse element since the large width portion is removed by the laser irradiation and only the small width portions having the small sectional area remain as exposed cut surfaces.