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. 21, 2002
Filed:
Oct. 08, 1999
Applicant:
Inventor:
Kenji Ohsawa, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/176 ; H01L 2/3495 ;
U.S. Cl.
CPC ...
H01L 2/176 ; H01L 2/3495 ;
Abstract
In a lead frame, leads are formed on a surface of protective insulation film having a device hole. Protruding electrodes (solder balls) are farmed on the surface of the leads opposite the surface closer to the protective insulation film. A reinforcement plate is also formed on the rear surface of the protective insulation film.