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:
Jan. 03, 1995
Filed:
Mar. 04, 1994
Applicant:
Inventor:
Paul T Lin, Austin, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
437217 ; 437206 ; 437209 ; 437220 ;
Abstract
A quad leadframe (22') for a CERQUAD is manufactured using conventional cladding and stamping technologies. A first metal layer (12) is provided with multiple cavities (14). A second metal layer (14) is clad to the first metal layer. A leadframe strip (22) can then be stamped from the clad metal. The leadframe has a leads (24) and bonding posts (28). The leads comprise two metal layers, and the bonding posts comprise only the second metal layer. The leadframe can then be used in the assembly of a semiconductor device (32). The portion of the leads external to the package body can be optionally etched to remove the second metal layer.