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:
Sep. 04, 2012
Filed:
Aug. 08, 2008
Applicants:
Mayumi Nakasato, Gifu, JP;
Ryosuke Usui, Aichi, JP;
Kiyoshi Shibata, Gifu, JP;
Inventors:
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/053 (2006.01); H01L 23/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A circuit device includes an insulating base provided with a resin layer mixed with a fibrous filler, bumps provided in the insulating base and functioning as electrodes for connection, a semiconductor device that is flip-chip mounted, and an underfill filling a gap between the semiconductor device and the insulating base. By allowing the fibrous filler projecting through the top surface of the resin layer to be in contact with the underfill, strength of adhesion between the underfill and the insulating base is improved.