Underfilled, encapsulated semiconductor die assemblies and...

Active solid-state devices (e.g. – transistors – solid-state diode – Combined with electrical contact or lead – Die bond

Reexamination Certificate

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C257S784000, C257S787000

Reexamination Certificate

active

07116000

ABSTRACT:
An apparatus and method for packaging a semiconductor die and a carrier substrate to substantially prevent trapped moisture therebetween and provide a robust, inflexible cost-effective bond. The semiconductor die is attached to the carrier substrate with a plurality of discrete adhesive elements so as to provide a gap or standoff therebetween. Wire bonds may then be formed between bond pads on the semiconductor die to conductive pads or terminals on the carrier substrate. With this arrangement, a dielectric filler material is disposed in the gap or standoff to form a permanent bonding agent between the semiconductor die and the carrier substrate. By applying the dielectric filler material after forming the wire bonds, the dielectric filler material coats at least a portion of the wire bonds to stabilize the wire bonds and prevent wire sweep in an encapsulation process, such as transfer molding, performed thereafter.

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