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:
May. 18, 1993
Filed:
Jan. 08, 1992
Kinya Oigawa, Oume, JP;
Sumitomo Metal Mining Company, Limited, Tokyo, JP;
Abstract
A composite lead frame in which an island formed with a greater diameter than that of a semiconductor device to be mounted is attached to a lead frame main body having leads being integrally protruded inward, the top ends of the leads are bonded with corresponding fine leads of the island at one ends thereof and lead terminals of the semiconductor device are connected respectively to the other ends of the corresponding fine leads, wherein the composite lead frame comprises an insulating sheet appended on one surface of the island and having the fine leads secured thereto being protruded outward and through holes disposed discretely passing through the insulating sheet and the island so that the wire bonding portions at the other ends of the fine leads are exposed.