Method of making a semiconductor package and method of making a semiconductor device
The present invention relates to a semiconductor package and a semiconductor device and a method of making the same. The method of making the semiconductor package comprises: providing a substrate; attaching a chip to a surface of the substrate; forming a plurality of connecting elements for electrically connecting the chip and the substrate; forming a plurality of first conductive bodies on the surface of the substrate; forming a molding compound for encapsulating the surface of the substrate, the chip, the connecting elements and the first conductive bodies; and removing a part of a border portion of the molding compound, so that the molding compound has two heights and one end of each first conductive bodies is exposed. Thereby, the molding compound covers the entire surface of the substrate, so that the bonding pads on the surface of the substrate will not be polluted.
1. A method of making a semiconductor package, comprising steps of:
providing a first substrate having a first surface and a second surface;
attaching a first chip to the first surface of the first substrate;
forming a plurality of first connecting elements for electrically connecting the first chip and the first substrate;
forming a plurality of first conductive bodies on the first surface of the first substrate;
forming a first molding compound for encapsulating the first surface of the first substrate, the first chip, the first connecting elements, and the first conductive bodies; and
removing a part of a border portion of the first molding compound and at least one half of at least one of the first conductive bodies, so that the first molding compound has a first top surface and a second top surface, the first top surface and the second top surface have different heights, and one end of each of the first conductive bodies is exposed.
2. The method of claim 1 , wherein, in the step of forming a plurality of first conductive bodies on the first surface of the first substrate, the first conductive bodies comprise a plurality of first solder balls.
3. The method of claim 1 , wherein, in the step of forming a first molding compound for encapsulating the first surface of the first substrate, the first chip, the first connecting elements, and the first conductive bodies, the first molding compound encapsulates the entire first surface of the first substrate.
4. The method of claim 1 , wherein, in the step of removing a pan of a border portion of the first molding compound, further removing a pad of at least one of the first conductive bodies, such that at least one of the first conductive bodies is in a hemispherical shape.
5. The method of claim 1 , wherein, the step of removing a pad of a border portion of the first molding compound is performed by laser cutting, chemical etching, cutting with a cutting tool or cutting with a water jet.
6. The method of claim 1 , wherein, the step of removing a pad of a border portion of the first molding compound is performed by cutting with a cutting tool, thereby to form a plurality of cutting lines on the first molding compound.
7. The method of claim 1 , wherein, after the step of forming a first molding compound for encapsulating the first surface of the first substrate, the first chip, the first connecting elements, and the first conductive bodies, further comprising a step of forming a plurality of second solder balls on the second surface of the first substrate.
8. The method of claim 1 , further comprising a step of stacking a second package on the first conductive bodies and electrically connecting the second package to the first conductive bodies.
9. A method of making a semiconductor device, comprising steps of:
providing a first substrate having a first surface and a second surface;
forming a plurality of first conductive bodies on the first surface of the first substrate;
attaching a first chip to the first surface of the first substrate;
forming a first molding compound for encapsulating the first surface of the first substrate, the first chip, and the first conductive bodies; and
removing a part of a border portion of the first molding compound, so that the first molding compound has a first top surface and a second top surface, the first top surface and the second top surface have different heights, the second to surface has a side portion and a corner portion, the side portion and the corner portion have different surface roughness, and one end of each of the first conductive bodies is exposed.
10. The method of claim 9 , further comprising a step of stacking a second package on the first conductive bodies and electrically connecting the second package to the first conductive bodies.
11. The method of claim 9 , wherein, in the step of forming a plurality of first conductive bodies on the first surface of the first substrate, the first conductive bodies comprise a plurality of first solder balls.
12. The method of claim 9 , wherein, in the step of forming a first molding compound for encapsulating the first surface of the first substrate, the first chip, and the first conductive bodies, the first molding compound encapsulates the entire first surface of the first substrate.
13. The method of claim 9 , wherein, in the step of removing a pan of a border portion of the first molding compound, further removing a part of at least one of the first conductive bodies such that at least one of the first conductive bodies is in a hemispherical shape.
14. The method of claim 9 , wherein, the step of removing a part of a border portion of the first molding compound is performed by laser cutting, chemical etching, cutting with a cutting tool or cutting with a water jet.
15. The method of claim 9 , wherein, the step of removing a part of a border portion of the first molding compound is performed by cutting with a cutting tool, thereby to form a plurality of cutting lines on the first molding compound.
16. The method of claim 9 , wherein, after the step of forming a first molding compound for encapsulating the first surface of the first substrate, the first chip, and the first conductive bodies, further comprising a step of forming a plurality of second solder balls on the second surface of the first substrate.
17. The method of claim 1 , wherein, in the step of removing a part of a border portion of the first molding compound, further removing at least one half of each of the first conductive bodies, such that each of the first conductive bodies is in a hemispherical shape.
18. The method of claim 1 , wherein, in the step of removing a part of a border portion of the first molding compound, the first top surface is associated with a central portion of the first molding compound, the second top surface is associated with the border portion of the first molding compound, the first top surface has a first height relative to the first surface of the first substrate, the second top surface has a second height relative to the first surface of the first substrate, and the first height and the second height are different.
19. The method of claim 18 , wherein the second height is no greater than one half of the first height.
20. The method of claim 18 , wherein one end of each of the first conductive bodies is substantially co-planar with the second top surface.
21. The method of claim 1 , wherein, in the step of removing a part of a border portion of the first molding compound, the second top surface has a side portion and a corner portion, the side portion and the corner portion have different surface roughness.
22. The method of claim 9 , wherein, in the step of removing a part of a border portion of the first molding compound, further removing at least one half of each of the first conductive bodies, such that each of the first conductive bodies is in a hemispherical shape.
23. The method of claim 9 , wherein, in the step of removing a pan of a border portion of the first molding compound, the first top surface is associated with a central portion of the first molding compound, the second top surface is associated with the border portion of the first molding compound, the first top surface has a first height relative to the first surface of the first substrate, the second top surface has a second height relative to the first surface of the first substrate, and the first height and the second height are different.
24. The method of claim 23 , wherein the second height is no greater than one half of the first height.
25. The method of claim 23 , wherein one aid of each of the first conductive bodies is substantially co-planar with the second top surface.