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:
Oct. 18, 2011
Filed:
Aug. 12, 2008
Applicant:
Akira Oga, Shiga, JP;
Inventor:
Akira Oga, Shiga, JP;
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/495 (2006.01);
U.S. Cl.
CPC ...
Abstract
A lead frame is provided which can prevent a short circuit between wires and the ends of adjacent leads, the short circuit being caused by wire sweep during the injection of molding resin, in a configuration where the electrodes of a semiconductor chip and the leads disposed around the semiconductor chip. The lead having sides substantially perpendicular to the direction of a resin flow has an end whose upstream side relative to the resin flow is constricted.