Managed memory component

Abstract

The present invention provides a system and method for combining a leaded package IC and a semiconductor die using a flex circuitry. The leaded packaged IC is disposed along one side of a flex circuit. The semiconductor die is disposed along the flex circuitry and preferably is between at least a part of the flex circuitry and the body of the leaded packaged IC. Preferably, the die is attached to a conductive layer of the flex circuitry. The flex circuitry preferably employs at least two conductive layers and the leaded packaged IC and die are preferably connected to one of the conductive layers of the flex circuitry. In preferred modules, the leaded packaged IC is preferably a flash memory device and the semiconductor die is preferably a controller.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side cross-sectional view of an exemplar module devised in accordance with a preferred embodiment of the present invention.

FIG. 2 depicts an alternative embodiment in accordance with the present invention.

FIG. 3 depicts an alternative embodiment in which the leads of a leaded packaged IC penetrate the flex circuitry employed in a module in accordance with a preferred embodiment of the present invention.

FIG. 4 depicts an alternative embodiment in accord with the present invention in which lead holes are present in the flex circuitry.

FIG. 5 depicts yet another embodiment in accordance with the present invention in which an area of flex circuitry is deflected.

FIG. 6 depicts yet another embodiment for connecting the leaded packaged IC to the flex-circuitry in accordance with the present invention.

FIG. 7 depicts an alternative embodiment of the present invention in which flex circuitry has distal ends that contact an inner side of the leads of the leaded packaged IC.

FIG. 8 depicts an enlarged cross-sectional view of a circuit module devised in accordance with a preferred embodiment of the present invention illustrating the area marked “A” in FIG. 1.

Claims

1. A circuit module comprising: flex circuitry having first and second sides, the flex circuitry having a plurality of leaded IC pads and the second side of the flex circuitry having an array of module contacts, the flex circuitry comprising multiple layers including plural conductive layers;a leaded packaged IC having a body and upper and lower major surfaces, plural peripheral sides, and leads emergent from at least a first one of the plural peripheral sides of the leaded packaged IC, the leads being connected to the flex circuitry through the plurality of leaded IC pads; anda semiconductor die attached to a selected one of the plural conductive layers of the flex circuitry and which semiconductor die is electrically connected to a first one of the plural conductive layers of the flex circuitry and disposed between the body of the leaded packaged IC and at least a selected one of the multiple layers of the flex circuitry.

2. The circuit module of claim 1 in which the leaded package IC is connected to the first one of the plural conductive layers of the flex circuitry.

3. The circuit module of claim 1 in which the semiconductor die is closer to the body of the leaded packaged IC than is the second conductive layer of the flex circuitry.

4. The circuit module of claims 1 or 2 in which the semiconductor die is between a second one of the plural conductive layers of the flex circuitry and the body of the leaded packaged IC.

5. The circuit module of claims 1 or 4 in which the leaded packaged IC is a flash memory circuit.

6. The circuit module of claims 1 or 4 in which the semiconductor die is a controller.

7. The circuit module of claim 1 in which the semiconductor die is attached to the first one of the plural conductive layers.

8. The circuit module of claim 1 in which the semiconductor die is attached to the second one of the plural conductive layers.

9. The circuit module of claim 1 in which the semiconductor die is electrically connected to a selected one of the plural conductive layers with wire bonds.

10. The circuit module of claims 1 or 4 in which encapsulate is disposed between the body of the leaded packaged IC and the semiconductor die.

11. The circuit module of claim 10 in which the semiconductor die is encapsulated.

12. The circuit module of claim 10 in which the leaded packaged IC is a flash memory device and the semiconductor die is a controller.

13. The circuit module of claim 10 in which the semiconductor die is electrically connected to the flex circuitry with wire bonds.

14. The circuit module of claim 1 in which the plurality of leaded IC pads are accessible from the first side of the flex circuitry.

15. The circuit module of claim 1 in which the plurality of leaded IC pads are accessible from the second side of the flex circuitry.

16. The circuit module of claim 1 in which the leads of the leaded packaged IC are parallel to the lower major surface of the leaded packaged IC.

17. The circuit module of claim 1 in which the leads of the leaded packaged IC are connected to the first and second sides of the flex circuitry.

18. The circuit module of claim 1 in which the flex circuitry further comprises a deflected area where the leaded packaged IC is connected to the flex circuitry.

19. The circuit module of claim 1 in which the flex circuitry further comprises a deflected area that is deflected toward the body of the leaded packaged IC.

20. The circuit module of claim 1 in which the flex circuitry exhibits lead holes through which each of the leads projects to contact the plurality of leaded IC pads.

21. The circuit module of claim 1 in which the flex circuitry has at least one distal end that contacts an inner side of one of the leads of the leaded packaged IC.

22. The circuit module of claim 1 in which at least one of the leads passes through the flex circuitry.

23. A circuit module comprising: flex circuitry having first and second sides, the flex circuitry having a plurality of leaded IC pads and the second side of the flex circuitry having an array of module contacts, the flex circuitry comprising multiple layers including at least one conductive layer;a leaded packaged IC having a body and upper and lower major surfaces, plural peripheral sides, and leads emergent from at least a first one of the plural peripheral sides of the leaded packaged IC, the leaded packaged IC being disposed on the first side of the flex circuitry and the leads being connected to the flex circuitry; anda semiconductor die attached to the at least one conductive layer of the flex circuitry so that the semiconductor die is between the body of the leaded packaged IC and at least one of the multiple layers of the flex circuitry.

24. The circuit module of claim 23 in which the leaded packaged IC is a flash memory device and the semiconductor die is a controller.

25. The circuit module of claim 23 in which encapsulate is disposed between the flex circuitry and the body of the leaded packaged IC.

26. The circuit module of claim 24 in which encapsulate is disposed between the flex circuitry and the body of the leaded packaged IC.

27. The circuit module of claim 23 in which the flex circuitry further comprises a deflected area where the leaded packaged IC is connected to the flex circuitry.

28. The circuit module of claim 23 in which the flex circuitry further comprises a deflected area that is deflected toward the body of the leaded packaged IC.

29. The circuit module of claim 23 in which the flex circuitry further comprises a deflected area that is deflected away from the body of the leaded packaged IC.