Package in package device for RF transceiver module
View Patent ↗In accordance with the present invention, there is provided multiple embodiments of a package-in-package semiconductor device including an RF package and a semiconductor die which are provided in a stacked arrangement and are each electrically connected to an underlying substrate through the use of conductive wires alone or in combination with conductive bumps. In certain embodiments of the present invention, the RF package and the semiconductor die are separated from each other by an intervening spacer which is fabricated from aluminum, or from silicon coated with aluminum. If included in the semiconductor device, the spacer is also electrically connected to the substrate, preferably through the use of conductive wires. The RF package, the semiconductor die, the spacer (if included) and a portion of the substrate are at least partially covered or encapsulated by a package body of the semiconductor device.
1. A semiconductor device, comprising:
a substrate having a conductive pattern disposed thereon;
an RF package electrically connected to the conductive pattern of the substrate, the RF package including a package substrate having an RF shield attached thereto;
a spacer attached to the RF package and electrically connected to the conductive pattern of the substrate by at least one spacer conductive wire;
a semiconductor die attached to the spacer and electrically connected to the conductive pattern of the substrate; and
a package body at least partially encapsulating the RF package, the semiconductor die and the substrate, and partially covering the spacer conductive wire.
2. The semiconductor device of claim 1 wherein the substrate comprises:
an insulative layer defining opposed first and second surfaces; and
a plurality of lands disposed on the second surface;
the conductive pattern being disposed on the first surface and electrically connected to the lands in a prescribed manner.
3. The semiconductor device of claim 1 wherein the semiconductor die is electrically connected to the conductive pattern by at least one conductive wire which is covered by the package body.
4. The semiconductor device of claim 1 wherein:
the RF shield defines a peripheral side surface; and
the semiconductor die defines a peripheral side surface, at least a portion of which protrudes outwardly beyond the side surface of the RF shield.
5. The semiconductor device of claim 1 wherein
the spacer is attached to the RF shield.
6. The semiconductor device of claim 5 wherein:
the spacer is attached to the RF shield by an adhesive layer; and
the semiconductor die is attached to the spacer by a film-over-wire which partially covers the spacer conductive wire.
7. The semiconductor device of claim 1 wherein
the spacer is attached to the package substrate.
8. The semiconductor device of claim 7 wherein the RF package is electrically connected to the conductive pattern by at least one package conductive wire which is partially covered by the package body.
9. The semiconductor device of claim 8 wherein:
the RF shield is attached to the substrate by an adhesive layer;
the spacer is attached to the package substrate by a first film-over-wire which partially covers the package conductive wire; and
the semiconductor die is attached to the spacer by a second film-over-wire which partially covers the spacer conductive wire.
10. A semiconductor device, comprising:
a substrate having a conductive pattern disposed thereon;
an RF package electrically connected to the conductive pattern of the substrate, the RF package including a package substrate having an RF shield attached thereto;
a spacer attached to the RF package and electrically connected to the conductive pattern of the substrate by at least one spacer conductive wire;
a semiconductor die attached to the spacer by a film-over-wire which partially covers the spacer conductive wire, the semiconductor die being electrically connected to the conductive pattern of the substrate; and
a package body at least partially encapsulating the RF package, the spacer, the semiconductor die and the substrate, and partially covering the spacer conductive wire.
11. The semiconductor device of claim 10 wherein:
the RF package is electrically connected to the conductive pattern of the substrate by at least one package conductive wire which is partially covered by the package body; and
the spacer is attached to the RF package by a film-over-wire which partially covers the package conductive wire.
12. A semiconductor device, comprising:
a substrate;
an RF package including a package substrate having an RF shield attached thereto, the RF shield being attached to the substrate of the semiconductor device by an adhesive layer, the RF package being electrically connected to the substrate by at least one package conductive wire;
a spacer attached to the package substrate by a first film-over-wire which partially covers the package conductive wire, the spacer being electrically connected to the substrate by at least one spacer conductive wire;
a semiconductor die attached to the spacer by a second film-over-wire which partially covers the spacer conductive wire, the semiconductor die being electrically connected to the substrate; and
a package body at least partially encapsulating the RF package, the semiconductor die, the package conductive wire, the spacer conductive wire, and the substrate.