Semiconductor package and method of fabricating the same
A semiconductor package including a marking film and a method of fabricating the same are provided wherein a marking film including a thermoreactive layer may be applied to a molding layer to protect a semiconductor chip under the molding layer and to efficiently perform a marking process. The thickness of the molding layer may thereby be reduced so the entire thickness of the semiconductor package may be reduced. Also, it is possible to prevent warpage of the semiconductor package through the marking film, provide the surface of the semiconductor package with gloss and freely adjust the color of the surface of the semiconductor package.
1. A semiconductor package comprising:
a package substrate on which a semiconductor chip is mounted;
a molding layer that covers the package substrate and molds the semiconductor chip; and
a marking film disposed on the molding layer and configured to form a discoloration region in response to a electromagnetic wave,
wherein the marking film comprises a thermoreactive layer which consists of a carbonizable polymer and a carbon black and wherein the thermoreactive layer is exposed to an environment.
2. The semiconductor package of claim 1 , wherein the electromagnetic wave includes one of a laser, an ultraviolet ray and a combination of the laser and the ultraviolet ray.
3. The semiconductor package of claim 1 , wherein the carbonizable polymer is selected from the group consisting of acrylic, phenolic, epoxy, urethane, polyamide and polyolefin.
4. The semiconductor package of claim 1 , wherein the carbonizable polymer is carbonized by reaction with the electromagnetic wave.
5. The semiconductor package of claim 1 , wherein the marking film further comprises a reflection layer, the reflection layer including reflectors that reflect the electromagnetic wave.
6. The semiconductor package of claim 5 , wherein the reflection layer is formed between the thermoreactive layer and the molding layer.
7. The semiconductor package of claim 1 , wherein a thickness of the marking film is between 5 μm and 40 μm.
8. The semiconductor package of claim 1 , wherein a distance between a top surface of the molding layer and a top surface of the semiconductor chip is between 50 μm and 150 μm.
9. The semiconductor package of claim 1 , wherein a distance between a top surface of the molding layer and a top surface of the semiconductor chip is about 1 μm to about 40 μm.
10. The semiconductor package of claim 5 wherein the reflectors are selected from the group consisting of Sb 2 O 3 , BaSO 4 , (PbCO 3 ) 2 .Pb(OH) 2 , TiO 2 , ZnO, ZnS, Al 2 O 3 , SiO 2 and mixtures thereof.
11. A semiconductor package comprising:
a package substrate on which a semiconductor chip is mounted;
a molding layer that covers the package substrate and molds the semiconductor chip; and
a marking film disposed on the molding layer and configured to form a discoloration region in response to a electromagnetic wave,
wherein the marking film includes a thermoreactive layer, the thermoreactive layer consisting of a carbonizable polymer and a carbon black, and the carbonizable polymer is selected from the group consisting of acrylic, phenolic, epoxy, urethane, polyamide and polyolefin, and wherein the thermoreactive layer is exposed to an environment.
12. The semiconductor package of claim 11 , wherein the marking film further includes a reflection layer, the reflection layer including reflectors that reflect the electromagnetic wave.
13. The semiconductor package of claim 12 , wherein the reflection layer is formed between the thermoreactive layer and the molding layer.
14. The semiconductor package of claim 11 , wherein a thickness of the marking film is between 5 μm and 40 μm.
15. The semiconductor package of claim 11 , wherein a distance between a top surface of the molding layer and a top surface of the semiconductor chip is between 50 μm and 150 μm.
16. The semiconductor package of claim 11 , wherein a distance between a top surface of the molding layer and a top surface of the semiconductor chip is about 1 μm to about 40 μm.
17. A semiconductor package comprising:
a package substrate on which a semiconductor chip is mounted;
a molding layer that covers the package substrate and molds the semiconductor chip; and
a marking film disposed on the molding layer and configured to form a discoloration region in response to a electromagnetic wave,
wherein the marking film comprises a thermoreactive layer and a reflection layer, the thermoreactive layer consisting of a carbonizable polymer and a carbon black and the reflection layer including reflectors that reflect the electromagnetic wave, and
wherein the thermoreactive layer is on the reflection layer such that a top surface of the thermoreactive layer is exposed to an environment.
18. The semiconductor package of claim 17 , wherein the reflection layer is formed between the thermoreactive layer and the molding layer.