Method of forming stacked die package

Semiconductor device manufacturing: process – Semiconductor substrate dicing – With attachment to temporary support or carrier

Reexamination Certificate

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Details

C438S108000, C438S109000, C257S668000

Reexamination Certificate

active

07955953

ABSTRACT:
A method of packaging semiconductor integrated circuits, including the steps of providing a transfer film and forming a patterned, conductive layer on a surface of the transfer film. A first semiconductor integrated circuit (IC) then is attached to the transfer film, where an active side of the first IC is attached to the transfer film. A second semiconductor IC then is attached to the first IC, where a bottom side of the second IC is attached to a bottom side of the first IC. Die pads on an active surface of the second IC are electrically connected to the conductive layer with wires and then a resin material is provided on one side of the transfer film to encapsulate the first and second ICs, the wires and a portion of the conductive layer. Next the transfer film is removed, which exposes the active side of the first IC and the conductive layer. An electrical distribution layer is formed over the active side of the first IC and the conductive layer and conductive balls are attached to the electrical distribution layer. The conductive balls allow electrical interconnection to the first and second integrated circuits.

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