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. 07, 2014
Filed:
Apr. 03, 2013
Renesas Electronics Corporation, Kanagawa, JP;
Hiroshi Yamashita, Kanagawa, JP;
Renesas Electronics Corporation, Kanagawa, JP;
Abstract
An apparatus provides good bonding between a package structure and a substrate and extended solder bonding life, even under heat stress. Of a lead frame to be used for a package structure having a configuration in which a semiconductor chip, an island of the lead frame, and external connection terminals are sealed with a resin from one surface, and the island and the external connection terminals are exposed on the other surface, the external connection terminals include a first external connection terminal disposed at a central part of each of sides of an outer rim of a semiconductor chip mounting region in which the semiconductor chip is to be mounted and a second external connection terminal outside the first external connection terminal at each of the sides of the outer rim of the semiconductor chip mounting region, wherein the first external connection terminal area exceeds the second external connection terminal's.