Patent ID: 9136215
Filing Date: 2015-09-15
Classification: H01L

Abstract:
1. A manufacturing method for a semiconductor package, comprising: providing a carrier having a carrier upper surface and a carrier lower surface opposite the carrier upper surface; forming a plurality of traces on the carrier, each trace having a trace upper surface and a trace lower surface opposite the trace upper surface, wherein the trace upper surface adjoins the carrier lower surface; forming a plurality of studs on the plurality of traces, each stud having a stud upper surface and a stud lower surface opposite the stud upper surface, wherein the stud upper surface adjoins the trace lower surface; forming a trace molding compound layer on the carrier by a first molding process, the trace molding compound layer having a first surface and a second surface opposite the first surface, wherein the trace molding compound layer encapsulates the plurality of traces and studs between the first and second surface of the trace molding compound layer, the first surface of the trace molding compound layer adjoins the carrier lower surface; removing the carrier from the trace molding compound layer to expose an etched surface of the trace molding compound layer and the trace upper surface; disposing at least a chip on the etched surface of the trace molding compound layer and connecting the chip to the trace upper surface; and forming a chip molding compound layer on the etched surface of the trace molding compound layer by a second molding process substantially similar to the first molding process, the chip molding compound layer having a first surface and a second surface opposite the first surface, wherein the chip molding compound layer encapsulates the chip between the first and second surface of the chip molding compound layer, the second surface of the chip molding compound layer adjoins the etched surface of the trace molding compound layer and the trace upper surface, and the chip molding compound layer and the trace molding compound layer are formed of substantially the same molding compound material.