Chip package assembly and method for manufacturing the same
A chip package assembly and a method for manufacturing the same are provided. A die is attached to one of pins located around a chip carrier, so that an electronic component such as a diode is packaged in the chip package assembly and is electrically connected in series with other dies inside the package, thereby improving the degree of integration of the chip package assembly, and reducing a volume of the external circuit.
1. A chip package assembly, comprising:
a lead frame, having a chip carrier and a plurality of pins located around the chip carrier, wherein the chip carrier has a first surface and a second surface which are opposite to each other, and each of the plurality of pins has a first surface and a second surface which or opposite to each other;
a first die, mounted on the first surface of the chip carrier; and
one or more second dies, mounted on first surfaces of the plurality of pins, wherein
each of the second dies comprises a first electrode and a second electrode, the first electrode is electrically connected to a corresponding electrode of the first die, and the second electrode is connected to an external circuit via one of the plurality of pins, so that the second die is connected with the first die in series, or
each of the second dies comprises a first electrode and a second electrode, the first electrode is electrically connected to a corresponding electrode of the first die, and the second electrode is connected to another corresponding electrode of the first die and is electrically connected to an external circuit via one of the plurality of pins, so that the second die is connected with the first die in parallel.
2. The chip package assembly according to claim 1 , wherein each of the second dies is mounted on the first surface of one of the plurality of pins.
3. The chip package assembly according to claim 1 , wherein in a case that the second die is connected with the first die in series,
each of the second dies has a first surface and a second surface which are opposite to each other, the first electrode is arranged on the first surface, and the second electrode is arranged on the second surface,
the second surface of the second die is electrically connected to the first surface of one of the plurality of pins for mounting the second die by a conductive adhesive layer, to electrically connect the second electrode of the second die with the first surface of the pin, and
the first electrode of the second die is electrically connected with the corresponding electrode of the first die via a first wire, so that the second die is connected with the first die in series.
4. The chip package assembly according to claim 1 , wherein in a case that the second die is connected with the first die in series,
each of the second dies has a first surface and a second surface which are opposite to each other, and the first electrode and the second electrode are arranged on the first surface,
the first electrode of the second die is electrically connected to the corresponding electrode of the first die via a wire,
the second electrode of the second die is electrically connected to the first surface of one of the plurality of pins via a wire and is electrically connected to an external circuit through the pin, so that the second die is connected with the first die in series.
5. The chip package assembly according to claim 1 , wherein in a case that the second die is connected with the first die in series,
the first die has a first surface and a second surface, with the first surface of the first die being an active surface,
the first die comprises a plurality of electrodes arranged on the active surface,
the second surface of the first die is attached to the first surface of the chip carrier, and
the first electrode of one of the second dies is electrically connected with one of the electrodes on the active surface via a first wire, and remaining electrodes on the active surface are electrically connected, via second wires, with first surfaces of the pins other than pins for mounting the second dies.
6. The chip package assembly according to claim 1 , wherein
the second die is configured as a diode,
the first electrode is one of an anode and a cathode of the diode, and
the second electrode is the other of the anode and the cathode of the diode.
7. The chip package assembly according to claim 6 , wherein the diode is a transient-voltage-suppression diode or a schottky diode.
8. The chip package assembly according to claim 1 , further comprising:
an encapsulator, for encapsulating the first die and the second dies, wherein
the second surface of each of the plurality of pins and the second surface of the chip carrier are exposed through a surface of the encapsulator.
9. The chip package assembly according to claim 1 , wherein the chip package assembly is a DFN (Dual-Flat No-lead) package or a QFN (Quad-Flat No-lead) package.