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:
Aug. 18, 2009
Filed:
Nov. 22, 2005
Applicants:
Takashi Miyake, Tonami, JP;
Hiroyuki Doi, Tonami, JP;
Inventors:
Takashi Miyake, Tonami, JP;
Hiroyuki Doi, Tonami, JP;
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 21/31 (2006.01); H01L 21/469 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor device with a fuseto be cut for a circuit modification, of which passivation film coating the uppermost wiring layer is formed in a two-layer structure including a first insulating filmwith high filling capability and a second insulating filmblocking penetration of moisture or impurities. An openingformed in a specific depth through the insulating films on the fuseis coated by a third insulating filmwith the blocking capability. This prevents the penetration of moisture or impurities, and the corrosion of the fuse