Package structure and method for manufacturing same
A package structure includes a flexible-rigid PCB and a chip. The flexible PCB includes a flexible PCB, a glue piece and an outer trace layer. The flexible PCB includes two bending portions and a fixing portion connected between the two bending portions, and includes an insulating layer and an inner trace layer formed on the insulating layer. The glue piece is adhered to the fixing portion. The outer trace layer is adhered to the glue piece and includes conductive pads. The fixing portion, the glue piece and the outer trace layer form a rigid portion, the bending portions form flexible portions. The chip is packaged on the rigid portion and includes electrode pads electrically connected to the conductive pads.
1. A method for manufacturing a package structure, comprising:
providing a flexible printed circuit board (PCB), the flexible PCB comprising two bending portions and a fixing portion connected between the two bending portions, the flexible PCB comprising an insulating layer and at least one inner trace layer formed on the insulating layer;
providing at least one glue piece and at least one copper foil layer, laminating and pressing the copper foil layer, the glue piece and the flexible PCB in sequence, the glue piece being adhered to the fixing portion and the copper foil layer;
processing the copper foil layer to obtain an outer trace layer, forming a via to electrically connect the outer trace layer to the inner trace layer, and thus obtaining a rigid-flexible PCB, the outer trace layer comprising a plurality of conductive pads, wherein the fixing portion, the glue piece and the outer trace layer form a rigid portion of the rigid-flexible PCB, the bending portions form flexible portions of the rigid-flexible PCB; and
packaging a chip on the rigid portion, the chip comprising a plurality of electrode pads electrically connected to the conductive pads.
2. The method of claim 1 , wherein chip is package on the rigid portion by wire bonding and the electrode pads are electrically connected to the conductive pads by bonding wires.
3. The method of claim 1 , wherein chip is package on the rigid portion by flip chip packaging and the electrode pads are electrically connected to the conductive pads by solder balls.
4. The method of claim 1 , further comprising covering a solder mask on the rigid portion before packaging the chip on the rigid portion, the solder mask defining a plurality of openings to expose the conductive pads.