In a second embodiment the lead frame is a composite...http://www.google.fr/patents/US6124151?utm_source=gb-gplus-shareBrevet US6124151 - Plastic lead frames for semiconductor devices, packages including same, and methods of fabrication Recherche avanc???e dans les brevets Num???ro de publicationUS6124151 AType de publicationOctroi Num???ro de demandeUS 09/195,765 Date de publication26 sept. 2000