Patent ID: 7504712
Filing Date: 2009-03-17
Classification: H01L

Abstract:
1. An electronic device comprising a leadframe attached to a die and embedded in a mold packaging, said leadframe with wires bonded to said die for electrical interconnection therebetween, said leadframe further comprises a) at least one predetermined bonding surface with said wires bonded thereon; b) at least one predetermined soldering surface exposed to the exterior of said mold packaging and adapted for soldering connection with an external circuit; c) at least one predetermined mold adhesion surface whereon said mold is attached thereto; and d) at least one predetermined die attachment surface whereon said die is attached thereto; wherein said soldering surface and said bonding surface are non-roughened and nickel palladium gold is deposited onto the surface of said leadframe at said soldering surface and said bonding surface; and said mold adhesion surface and said die attachment surface are free of metal plating and roughened to increase the surface area for attachment to said mold and said die respectively such that adhesion is enhanced.