Integrated circuit package system with internal stacking module

1. A method of manufacturing an integrated circuit package system including:

fabricating an integrated circuit substrate;

forming an internal stacking module coupled to the integrated circuit substrate including:

forming a flexible substrate having a first side and a second side opposite the first side,

coupling a stacking module integrated circuit to the flexible substrate, and

bending a flexible extension over the stacking module integrated circuit;

molding a package body on the integrated circuit substrate and the internal stacking module including the second side encapsulated in the package body and a top surface of the package body coplanar with and exposing a portion of the second side of the flexible substrate; and

coupling an external integrated circuit to the internal stacking module exposed through the package body.

2. The method as claimed in claim 1 further comprising mounting a first integrated circuit on the integrated circuit substrate and under the internal stacking module.

3. The method as claimed in claim 1 further comprising coupling a discrete component to the flexible substrate.

4. The method as claimed in claim 1 further comprising positioning a conductive shield around the stacking module integrated circuit.

5. The method as claimed in claim 1 further comprising mounting a second stacking module integrated circuit on the second side of the flexible substrate.

6. A method of manufacturing an integrated circuit package system including:

fabricating an integrated circuit substrate having a component contact and a system contact;

forming an internal stacking module coupled to the integrated circuit substrate including:

forming a flexible substrate having a first side and a second side,

coupling a stacking module integrated circuit to the flexible substrate including forming a mold cap on the stacking module integrated circuit and the first side, and

bending a flexible extension over the stacking module integrated circuit including applying an adhesive between the mold cap and the flexible extension;

molding a package body on the integrated circuit substrate and the internal stacking module including the second side encapsulated in the package body and a top surface of the package body coplanar with and exposing a portion of the second side of the flexible substrate by exposing an external component contact on the second side of the flexible substrate; and

coupling an external integrated circuit to the internal stacking module exposed through the package body including coupling a chip interconnect between the external integrated circuit and the external component contact.

7. The method as claimed in claim 6 further comprising mounting a first integrated circuit on the integrated circuit substrate and under the internal stacking module including coupling an electrical interconnect between the first integrated circuit and the component contact.

8. The method as claimed in claim 6 further comprising coupling a discrete component to the flexible substrate including coupling a resistor, a capacitor, an inductor, a voltage regulator, an active device, or a combination thereof.

9. The method as claimed in claim 6 further comprising positioning a conductive shield around the stacking module integrated circuit including forming an electro-magnetic interference shield or a radio frequency shield around the stacking module integrated circuit.

10. The method as claimed in claim 6 further comprising mounting a second stacking module integrated circuit on the second side of the flexible substrate including coupling an electrical interconnect between the second side of the flexible substrate and the component contact on the integrated circuit substrate.

11. An integrated circuit package system includes:

an integrated circuit substrate;

an internal stacking module coupled to the integrated circuit substrate includes:

a flexible substrate having a first side and a second side opposite the first side,

an external component contact on the second side of the flexible substrate,

a stacking module integrated circuit coupled to the flexible substrate,

a flexible extension over the stacking module integrated circuit, and

a component contact and a system contact on the integrated circuit substrate;

a package body on the integrated circuit substrate and the internal stacking module includes the second side encapsulated in the package body and a top surface of the package body coplanar with a portion of the second side of the flexible substrate exposed from the package body;

an external integrated circuit coupled to the internal stacking module exposed through the package body;

a mold cap on the stacking module integrated circuit and the first side;

an adhesive between the mold cap and the flexible extension; and

a chip interconnect between the external integrated circuit and the external component contact.

12. The system as claimed in claim 11 further comprising a first integrated circuit mounted on the integrated circuit substrate and under the internal stacking module.

13. The system as claimed in claim 11 further comprising a discrete component coupled to the flexible substrate.

14. The system as claimed in claim 11 further comprising a conductive shield around the stacking module integrated circuit.

15. The system as claimed in claim 11 further comprising a second stacking module integrated circuit mounted on the second side of the flexible substrate.

16. The system as claimed in claim 11 further comprising a first integrated circuit on the integrated circuit substrate and under the internal stacking module includes an electrical interconnect between the first integrated circuit and the component contact.

17. The system as claimed in claim 11 further comprising a discrete component coupled to the flexible substrate includes a resistor, a capacitor, an inductor, a voltage regulator, an active device, or a combination thereof.

18. The system as claimed in claim 11 further comprising a conductive shield around the stacking module integrated circuit includes an electro-magnetic interference shield or a radio frequency shield around the stacking module integrated circuit.

19. The system as claimed in claim 11 further comprising a second stacking module integrated circuit on the second side of the flexible substrate includes an electrical interconnect between the second side of the flexible substrate and the component contact on the integrated circuit substrate.