INTEGRATED CIRCUIT PACKAGE SYSTEM

1 . An integrated circuit package system comprising:

forming a substrate having an integrated circuit die attached thereon;

attaching a heat slug on the substrate, the heat slug having a planar top surface and an opening in the planar top surface; and

molding the heat slug and the substrate through the opening.

2 . The system as claimed in claim 1 wherein attaching the heat slug on the substrate, the heat slug having the planar top surface and the opening in the planar top surface includes forming the opening in a configuration of a downset opening.

3 . The system as claimed in claim 1 further comprising placing a gate insert in the opening for injection molding.

4 . The system as claimed in claim 1 wherein the molding includes forming an encapsulation in a configuration of a center gate mold.

5 . The system as claimed in claim 1 molding the heat slug includes molding a support of the heat slug.

6 . An integrated circuit package system comprising:

forming a substrate having an integrated circuit die attached thereon with a first adhesive;

attaching a heat slug on the substrate with a second adhesive, the heat slug having a planar top surface and an opening in the planar top surface; and

molding the heat slug, the integrated circuit die, and the substrate through the opening.

7 . The system as claimed in claim 6 wherein forming the substrate having the integrated circuit die attached thereon with the first adhesive includes applying a die-attach adhesive for the first adhesive.

8 . The system as claimed in claim 6 wherein attaching the heat slug on the substrate with the second adhesive, the heat slug having the planar top surface and the opening in the planar top surface includes applying a thermally conductive adhesive for the second adhesive.

9 . The system as claimed in claim 6 further comprising electrically connecting the integrated circuit die and the substrate.

10 . The system as claimed in claim 6 further comprising attaching an external interconnect on the substrate.

11 . An integrated circuit package system comprising:

a substrate having an integrated circuit die attached thereon;

a heat slug on the substrate, the heat slug having a planar top surface and an opening in the planar top surface; and

an encapsulation to cover the heat slug and the substrate through the opening.

12 . The system as claimed in claim 11 wherein the heat slug on the substrate, the heat slug having the planar top surface and the opening in the planar top surface includes the opening in a configuration of a downset opening.

13 . The system as claimed in claim 11 wherein the encapsulation to cover the heat slug includes the planar top surface exposed.

14 . The system as claimed in claim 11 wherein the encapsulation to cover the heat slug is a center gate mold.

15 . The system as claimed in claim 11 wherein the encapsulation to cover the heat slug also covers a support of the heat slug.

16 . The system as claimed in claim 11 wherein:

the substrate having the integrated circuit die attached thereon has a first adhesive;

the heat slug on the substrate is attached with a second adhesive, the heat slug having the planar top surface and an opening in the planar top surface; and

the encapsulation to cover the heat slug and the substrate through the opening is also a cover for the integrated circuit die.

17 . The system as claimed in claim 16 wherein the first adhesive is a die-attach adhesive.

18 . The system as claimed in claim 16 wherein the second adhesive is a thermally conductive adhesive.

19 . The system as claimed in claim 16 further comprising an internal interconnect between the integrated circuit die and the substrate.

20 . The system as claimed in claim 16 further comprising an external interconnect on the substrate.