Semiconductor package and method of manufacturing the same
A semiconductor package includes a package substrate, at least one semiconductor chip mounted on the package substrate, and a molding member that surrounds the at least one semiconductor chip. The molding member includes fillers. Each of the fillers includes a core and a coating layer that surrounds the core. The core includes a non-electromagnetic material and the coating layer includes an electromagnetic material. The molding member includes regions respectively have different distributions of the fillers.
1. A semiconductor package comprising:
a package substrate;
at least one semiconductor chip mounted on the package substrate; and
a molding member that surrounds the at least one semiconductor chip,
the molding member including fillers,
each of the fillers including a core and a coating layer that surrounds the core,
the core including a non-electromagnetic material,
the coating layer including an electromagnetic material, and
the molding member including regions that respectively have different distributions of the fillers, at least some of the fillers in the molding member being adjacent to the semiconductor chip, wherein
the molding member includes a first region and a second region,
the first region has a first concentration of the fillers,
the second region has a second concentration of the fillers that is less than the first concentration,
the second region is over the first region and extends over the at least one semiconductor chip, and
the at least one semiconductor chip is on the first region.
2. The semiconductor package of claim 1 ,
wherein the fillers in the molding member are placed in a relatively high distribution at a peripheral region of the at least one semiconductor chip.
3. The semiconductor package of claim 1 , wherein
the fillers in the molding member are configured to be moved in a direction in which warpage of the package substrate is alleviated, and
the molding member is configured to have different coefficients of thermal expansion in different regions among the regions in the molding member according to the different distributions of the fillers.
4. The semiconductor package of claim 3 , wherein
the regions of the molding member include an upper region of the molding member and a lower region of the molding member,
a coefficient of thermal expansion in the upper region of the molding member and a coefficient of thermal expansion in the lower region of the molding member are different from each other.
5. The semiconductor package of claim 1 , wherein
the fillers include first fillers and second fillers,
the first fillers are configured to react relatively strongly to an electric field compared to the second fillers,
the second fillers that are configured to react relatively weakly to the electric field compared to the first fillers, and
the first fillers and the second fillers are placed in different regions among the regions in the molding member.
6. The semiconductor package of claim 5 ,
diameters of the first fillers are different from diameters of the second fillers, and
a material in the coating layer of the first fillers is identical to a material in the coating layer of the second fillers.
7. The semiconductor package of claim 1 , wherein
the fillers include first fillers and second fillers,
the first fillers have a force in a first direction in response to a magnetic field,
the second fillers that have a force in a second direction in response to the magnetic field,
the second direction is opposite the first direction, and
the first fillers and the second fillers are placed in different regions among the regions in the molding member.
8. The semiconductor package of claim 7 , wherein
a material in the coating layer of the first fillers is different from a material in the coating layer of the second fillers.
9. The semiconductor package of claim 1 , wherein fillers are distributed in an epoxy material,
the fillers are configured to be moved in a certain direction within the molding member in response to an electric field or a magnetic field that is applied to the molding member.
10. The semiconductor package of claim 9 , wherein
the core includes silicon oxide or aluminum oxide, and
the coating layer includes one of a metal, a metal oxide, a polymer, a polymer electrolyte, and a carbon composite material.
11. The semiconductor package of claim 10 , wherein
the fillers include first fillers and second fillers,
the first fillers are configured to react relatively strongly to an electric field compared to the second fillers,
the second fillers are configured to react relatively weakly to the electric field compared to the first fillers,
the electromagnetic material in the coating layer of the first fillers and the electromagnetic material in the coating layer of the second fillers include a polymer electrolyte, and
a thickness of the coating layers of the first fillers is different from a thickness of the coating layers of the second fillers.
12. The semiconductor package of claim 10 , wherein
the fillers include first fillers and second fillers,
the first fillers are configured to have a force in a first direction in response to the magnetic field,
the second fillers are configured to have a force in a second direction in response to the magnetic field,
the second direction is opposite the first direction,
the electromagnetic material in the coating layer of the first fillers is a ferromagnetic material,
the electromagnetic material in the coating layer of the second fillers is a diamagnetic material, and
the coating layer of the first fillers and the coating layer of the second fillers have equal thicknesses.
13. The semiconductor package of claim 9 , wherein
a shape of the fillers includes at least one of a sphere, a platelet, or a fiber.
14. The semiconductor package of claim 1 , wherein
the at least one semiconductor chip is electrically connected to the package substrate using solder bumps.
15. A semiconductor package comprising:
a package substrate;
at least one semiconductor chip mounted on the package substrate; and
a molding member that surrounds the at least one semiconductor chip,
the molding member including fillers,
each of the fillers including a core and a coating layer that surrounds the core,
the core including a non-electromagnetic material,
the coating layer including an electromagnetic material, and
the molding member including regions that respectively have different distributions of the fillers, wherein
the at least one semiconductor chip is electrically connected to the package substrate using solder bumps, and
the fillers in the molding member are placed around each of the solder bumps, with a relatively high distribution in a region between the at least one semiconductor chip and the package substrate among the regions in the molding member, wherein
the molding member includes a first region and a second region,
the first region has a first concentration of the fillers,
the second region has a second concentration of the fillers that is less than the first concentration,
the second region is over the first region and extends over the at least one semiconductor chip, and
the at least one semiconductor chip is on the first region.
16. A semiconductor package comprising:
a package substrate;
at least one semiconductor chip mounted on the package substrate; and
a molding member that surrounds the at least one semiconductor chip,
the molding member including fillers,
each of the fillers including a core and a coating layer that surrounds the core,
the core including a non-electromagnetic material,
the coating layer including an electromagnetic material, and
the molding member including a first region and a second region, the first region having a first concentration of the fillers, the second region having a second concentration of the fillers that is less than the first concentration, and the first region and the second region having an equal width or an equal thickness, wherein
the second region is over the first region and extends over the at least one semiconductor chip, and
the at least one semiconductor chip is on the first region.