Apparatus and method for stackable molded lead frame ball grid array packaging of integrated circuits
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United States of America Patent
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Oct 26, 1999
Grant Date -
N/A
app pub date -
Dec 20, 1996
filing date -
Dec 20, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus and method for packaging an integrated circuit having a semiconductor die with electronic circuitry disposed thereon includes lead frames for mounting thereon solder balls of a ball grid array packaging structure. In one embodiment, the semiconductor die is coupled to conductors of the lead frame via gold wires attached to both the semiconductor die and the lead frame. The lead frame is encapsulated in plastic with apertures disposed therein for exposing upper and lower portions of conductors of the lead frame. The apertures are filled with solder balls to contact both the upper and lower portions of the lead frame conductors. Solder balls on the top of one integrated circuit package may be connected to mating solder balls on the bottom of another integrated circuit package, and so on, thereby achieving multiple stacking of integrated circuit packages.
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