Method for interconnecting semiconductor components with substrates and contact means
View Patent ↗A semiconductor component includes a substrate having a plurality of compliant contact bumps formed over a surface thereof. A semiconductor chip has a plurality of contact regions formed over a surface thereof. The compliant contact bumps of the substrate are electrically connected with the contact regions of the semiconductor chip and wherein the semiconductor chip is mechanically attached to the substrate. As an example, this connection and attachment can be achieved by soldering the contact bumps to the contact regions.
1. A method for interconnecting a semiconductor component with a substrate, the method comprising:
providing a substrate with contacts, each of the contacts comprising a compliant contact bump and a conductive contact pad overlying a tip of the compliant contact bump, the conductive contact pads being electrically coupled with leads on the substrate, wherein the substrate has no active circuitry formed within the substrate;
providing a semiconductor component with contacts for interconnecting with the contact pads on the substrate, the contacts on the semiconductor component and the contact pads on the substrate being arranged in a like configuration, wherein the semiconductor component includes active circuitry formed in and above a semiconductor material; and
electrically coupling the semiconductor component contacts to the contact pads.
2. The method of claim 1 , wherein electrically coupling the semiconductor component contacts to the contact pads comprises soldering the semiconductor component contacts to the contact pads to realize a solder connection.
3. The method of claim 2 , wherein the solder connection achieves electrical and mechanical contact between the substrate and the semiconductor component.
4. The method of claim 2 , further comprising attaching a plurality of semiconductor components to compliant contact bumps on the substrate such that the semiconductor components can be mounted side-by-side by soldering.
5. The method of claim 4 , further comprising dividing the substrate into individual semiconductor elements, each semiconductor element including at least one semiconductor component.
6. The method of claim 5 , wherein dividing the substrate into individual semiconductor elements comprises sawing.
7. The method of claim 1 , wherein the substrate comprises a printed circuit board with one or more layers.
8. The method of claim 1 , further comprising printing the compliant contact bumps on a surface of the substrate.
9. The method of claim 8 , wherein the compliant contact bumps are formed by mixing a compliant material with an electrically conductive material before printing the compliant contact bumps on the surface of the substrate.
10. The method of claim 1 , wherein the compliant contact bump element is made of an electrically conductive material.
11. The method of claim 10 , wherein the compliant contact bumps are secured on a surface of the substrate by adhering.
12. The method of claim 1 , wherein the contacts on the substrate are formed by forming the contact pads over the compliant contact bumps and by forming metal leads over the substrate such that the contact pad at the tip of each compliant element is electrically connected with the metal leads over the substrate.
13. The method of claim 12 , wherein the contact pads and the metal leads are formed by photolithographic technology and by galvanic or thermal deposition of metal.
14. The method of claim 1 , wherein the substrate comprises a printed circuit board.
15. A semiconductor component comprising:
a substrate having a plurality of compliant contact bumps formed over a surface thereof; and
a semiconductor chip having a plurality of contact regions formed over a surface thereof, wherein the compliant contact bumps of the substrate are electrically connected with the contact regions of the semiconductor chip, wherein the semiconductor chip is mechanically attached to the substrate, and wherein the semiconductor chip includes active circuitry formed in and above a semiconductor material, and wherein the substrate has no active circuitry formed within the substrate.
16. The semiconductor component of claim 15 , wherein the compliant contact bumps are electrically connected with the contact regions and the semiconductor chip is mechanically attached to the substrate by solder connections between the compliant contact bumps and the contact pads.
17. The semiconductor component of claim 15 , wherein the compliant contact bumps comprise a material selected from the group consisting of plastic materials, silicone and rubber.
18. The semiconductor component of claim 15 ,wherein the active circuitry comprises a processor.
19. The semiconductor component of claim 15 ,wherein the semiconductor chip comprises a memory chip.
20. The semiconductor component of claim 15 ,further comprising an additional semiconductor chip having a plurality of contact regions formed over a surface thereof, wherein the compliant contact bumps of the substrate are electrically connected with the contact regions of the additional semiconductor chip, and wherein the additional semiconductor chip is mechanically attached to the substrate at a location laterally adjacent the semiconductor chip.
21. A semiconductor component comprising:
a printed circuit board having a plurality of compliant contact bumps formed over a surface thereof; and
a semiconductor chip having a plurality of contact regions formed over a surface thereof, wherein the compliant contact bumps of the printed circuit board are electrically connected with the contact regions of the semiconductor chip, wherein the semiconductor chip is mechanically attached to the printed circuit board, wherein the semiconductor chip includes active circuitry formed in and above a semiconductor material, and wherein no active circuitry is disposed within the printed circuit board.
22. A semiconductor component comprising:
a printed circuit board having a plurality of compliant contact bumps formed over a surface thereof;
a semiconductor chip having a plurality of contact regions formed over a surface thereof, wherein the compliant contact bumps of the printed circuit board are electrically connected with the contact regions of the semiconductor chip, wherein the semiconductor chip is mechanically attached to the printed circuit board, and wherein the semiconductor chip includes active circuitry formed in and above a semiconductor material; and
an additional semiconductor chip having a plurality of contact regions formed over a surface thereof, wherein the compliant contact bumps of the printed circuit board are electrically connected with the contact regions of the additional semiconductor chip, and wherein the additional semiconductor chip is mechanically attached to the printed circuit board at a location laterally adjacent the semiconductor chip.
23. The semiconductor component of claim 22 , wherein the compliant contact bumps are electrically connected with the contact regions of the semiconductor chip, and the semiconductor chip is mechanically attached to the printed circuit board by solder connections between the compliant contact bumps and contact pads.
24. The semiconductor component of claim 22 , wherein the compliant contact bumps comprise a material selected from the group consisting of plastic materials, silicone and rubber.
25. The semiconductor component of claim 22 , wherein the active circuitry comprises a processor.
26. The semiconductor component of claim 22 , wherein the semiconductor chip comprises a memory chip.