Molded interposer package and method for fabricating the same
The invention provides a molded interposer package and a method for fabricating the same. The molded interposer package includes a plurality of metal studs. A molding material encapsulates the metal studs leaving the bottom surfaces of the metal studs exposed. A first chip is disposed on the molding material, connecting to the top surfaces of the metal studs. A plurality of solder balls connects and contacts to the bottom surfaces of the metal studs.
1. A molded interposer package, comprising:
a plurality of metal studs;
a molding material encapsulating the metal studs leaving the bottom surfaces of the metal studs exposed, wherein there is no underfill encapsulation layer, made of a different material from the molding material, surrounding the molding material;
a first chip disposed on the molding material, connecting to the top surfaces of the metal studs; and
a plurality of solder balls connecting and contacting to the bottom surfaces of the metal studs.
2. The molded interposer package as claimed in claim 1 , further comprising:
a first redistribution layer pattern disposed between the molding material and the first chip, electrically connecting to both the metal studs and the first chip.
3. The molded interposer package as claimed in claims 1 and 2 , further comprising:
an interposer disposed on top surfaces of the metal studs.
4. The molded interposer package as claimed in claim 3 , wherein the interposer electrically connects to both the metal studs and the first chip.
5. The molded interposer package as claimed in claim 1 , further comprising:
a solder mask layer disposed between the first redistribution layer pattern and the first chip; and
a plurality of conductive bumps extending through the solder mask layer, connecting the first redistribution layer pattern to the first chip.
6. The molded interposer package as claimed in claim 5 , wherein the conductive bumps comprise solder balls, metal pillars or combinations thereof.
7. The molded interposer package as claimed in claim 5 , wherein the solder mask layer is a topmost layer on the molding material.
8. The molded interposer package as claimed in claim 5 , further comprising an underfill material disposed between the solder mask layer pattern and the first chip.
9. The molded interposer package as claimed in claim 1 , further comprising:
a plurality of first metal vias connecting to both the top surfaces of the metal studs and the first redistribution layer pattern;
a dielectric layer covering the first redistribution layer pattern;
a plurality of second metal vias through the dielectric layer connecting to the first redistribution layer pattern; and
a second redistribution layer pattern connecting to the second metal vias.
10. The molded interposer package as claimed in claim 9 , further comprising:
a passivation layer covering a top surface of the molding material, wherein the first metal vias extend through the passivation layer.
11. The molded interposer package as claimed in claim 1 , wherein the top surfaces of the metal studs are lower or coplanar with a top surface of the molding material, and the bottom surfaces of the metal studs are above or coplanar with a bottom surface of the molding material.
12. The molded interposer package as claimed in claim 1 , wherein a bottom surface of the molding material is not covered by any solder mask layer.
13. The molded interposer package as claimed in claim 1 , further comprising at least one electronic component separated from the first chip disposed over a top surface of the molding material, connecting to the first redistribution layer pattern.
14. The molded interposer package as claimed in claim 1 , further comprising a heat spreader covering the first chip and the first redistribution layer pattern.
15. The molded interposer package as claimed in claim 1 , further comprising a mold cap covering the chip and the first redistribution layer pattern.
16. The molded interposer package as claimed in claim 1 , further comprising:
a second chip disposed beside the first chip or on the first chip.
17. The molded interposer package as claimed in claim 16 , wherein the second chip connects to the first redistribution layer pattern through conductive bonding wires or conductive bumps.
18. The molded interposer package as claimed in claim 1 , further comprising:
a semiconductor device package disposed beside the first chip or on the first chip.
19. The molded interposer package as claimed in claim 18 , wherein the semiconductor package connects to the first redistribution layer pattern through the conductive bumps.
20. The molded interposer package as claimed in claim 3 , further comprising:
a second chip disposed beside the first chip or on the first chip, wherein the second chip connects to the metal studs through the first interposer.
21. The molded interposer package as claimed in claim 1 , wherein two of the metal studs contact to each other.
22. The molded interposer package as claimed in claim 1 , further comprising:
a frame type metal stiffener through the molding material, wherein an inner sidewall of the frame type metal stiffener surrounds the metal studs.
23. The molded interposer package as claimed in claim 22 , further comprising:
a plurality of metal fins disposed on an outer sidewall of the frame type metal stiffener, wherein the metal fins extrude from a boundary of the molding material.
24. The molded interposer package as claimed in claim 1 , further comprising:
a metal stiffener bar through the molding material, connecting to two adjacent sides of the frame type metal stiffener.
25. The molded interposer package as claimed in claim 24 , wherein the metal studs, the frame type metal stiffener, the metal fins and the metal stiffener bar are formed of copper.