Thermal improvement for hotspots on dies in integrated circuit packages
Methods and apparatuses for improved integrated circuit (IC) packages are described herein. In an aspect, an IC device package includes an IC die having a contact pad, where the contact pad is located on a hotspot of the IC die. The hotspot is thermally coupled to a thermal interconnect member. In an aspect, the package is encapsulated in a mold compound. In a further aspect, a heat spreader is attached to the mold compound, and is thermally coupled to the thermal interconnect member. In another aspect, a thermal interconnect member thermally is coupled between the heat spreader and the substrate.
1. An integrated circuit (IC) package, comprising:
an IC die having a surface;
a set of thermal interconnect members, each thermal interconnect member of the set of thermal interconnect members being coupled to a respective one of a plurality of hotspots located on the surface of the IC die; and
a heat spreader coupled to each thermal interconnect member of the set of thermal interconnect members, wherein each thermal connect member of the set of thermal interconnect members is configured to conduct heat from the respective hotspot of the plurality of hotspots to uniformly distribute heat throughout the IC die during operation.
2. The IC package of claim 1 , wherein each thermal interconnect member of the set of thermal interconnect members is configured to cause a temperature of a respective location on the IC die to decrease towards a temperature of another location on the IC die during operation of the die.
3. The IC package of claim 1 , wherein the IC package further comprises:
a mold compound that encapsulates the IC die and at least a portion of each thermal interconnect member of the set of thermal interconnect members.
4. The IC package of claim 3 , wherein a surface of the mold compound has a cavity formed therein.
5. The IC package of claim 4 , wherein the heat spreader is mounted in the cavity.
6. The IC package of claim 3 , wherein a portion of each thermal interconnect member of the set of thermal interconnect members is exposed at a surface of the mold compound.
7. The IC package of claim 6 , wherein the exposed portion of each thermal interconnect member of the set of thermal interconnect members is planar, and is co-planar with the surface of the mold compound.
8. The IC package of claim 1 , further comprising:
a mold compound that encapsulates the IC die, each thermal interconnect member of the set of thermal interconnect members, and a portion of the heat spreader.
9. The IC package of claim 1 , further comprising:
a mold compound that encapsulates the IC die, each thermal interconnect member of the set of thermal interconnect members, and the heat spreader.
10. The IC package of claim 1 , wherein the heat spreader is plated with a material at locations where respective ones of the set of thermal interconnect members are attached.
11. The IC package of claim 10 wherein the material is a solder.
12. The IC package of claim 10 , wherein the material is an epoxy.
13. The IC package of claim 1 , wherein each of the thermal interconnect members comprises a solder ball.
14. The IC package of claim 13 , wherein the solder ball is truncated.
15. The IC package of claim 1 , wherein at least one of the set of the thermal interconnect members comprises a metal.
16. The IC package of claim 15 , wherein the metal is gold, copper, aluminum, silver, nickel, tin, or a metal alloy.
17. The IC package of claim 1 , wherein at least one of the set of thermal interconnect members comprises a thermally conductive epoxy.
18. The IC package of claim 1 , wherein at least one of the set of thermal interconnect members comprises a core material coated with a bonding material.
19. The IC package of claim 1 , wherein each of the plurality of hotspots corresponds to a location of a functional block of the IC die.
20. The IC package of claim 1 , further comprising a wire bond coupled to the surface of the IC die and wherein the heat spreader covers at least a portion of the wire bond.