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:
Aug. 20, 1996
Filed:
May. 07, 1993
Donald W Dahringer, Glen Ridge, NJ (US);
AT&T Corp., Murray Hill, NJ (US);
Abstract
Described is a plastic encapsulated electronic device having an integrated circuit unit, a lead frame and a plastic material encapsulating the IC unit and portions of the leads into a sealed package. Each of the leads includes an inner portion adjacent the IC unit, an outer portion laying in a different plane than the inner portion, and a central portion interconnecting the inner and the outer portions. The plastic enclosure is so formed that the outer portion of each lead, except for its lowermost flat surface and a short outermost section, is embedded in the plastic material. The bottom surface of the plastic enclosure is substantially coplanar with the lowermost flat surface of each lead. The short outermost portion of the outer lead portion extends beyond the plastic material for testing purposes. This arrangement provides for a robust encapsulation of the leads avoiding the prior problems of the prior art. Additionally, this device is especially useful for attaching the device to an interconnecting board by the use of conductive adhesives.