Semiconductor device
View Patent ↗In order to solve a problem of increased noise accompanying increased area of a return path in a stacked package structure, provided is a semiconductor device which is formed in a stacked package such as a PoP package, which realizes low noise without changing a package size. An additional power supply wiring that runs along a signal wiring between an upper PoP and a lower PoP is newly added in the lower PoP of a package having a PoP structure.
1. A device, comprising:
a first semiconductor package encapsulating a first semiconductor integrated circuit;
a second semiconductor package encapsulating a second semiconductor integrated circuit having a different function than a function of the first semiconductor integrated circuit; and a printed circuit board;
wherein the first semiconductor package is mounted on the printed circuit board:
wherein the second semiconductor package is stacked and mounted on the first semiconductor package: and
wherein the first semiconductor package comprises:
a first power supply wiring connecting a power supply path of the first semiconductor integrated circuit and a power supply path of the printed circuit board; and
a second power supply wiring connecting a power supply path of the second semiconductor package and the power supply path of the printed circuit board,
the device further comprising:
a third power supply wiring connecting the first power supply wiring and the second power supply wiring; and
transfer signal wirings which are provided within the stacked package as intra-package transfer signal wirings and which transmit and receive a data signal between the first semiconductor integrated circuit and the second semiconductor integrated circuit,
the intra-package transfer signal wirings comprising:
a first signal wiring which is provided in the first semiconductor package; and
a second signal wiring which is provided in the second semiconductor package and which is electrically connected to the first signal wiring;
wherein:
the first semiconductor package comprises a plurality of wiring layers;
the third power supply wiring is provided in a top layer of the plurality of wiring layers of the first semiconductor package in which the first semiconductor integrated circuit is mounted;
the first signal wiring is air-wired directly above the third power supply wiring through a wire bonding; and
the third power supply wiring and the first signal wiring are wired so as to face each other.
2. A device, comprising:
a first semiconductor package that comprises:
a first semiconductor integrated circuit,
a first wiring configured to receive a first power voltage, the first wiring being further configured to be electrically connected to the first semiconductor integrated circuit to convey the first power voltage to the first semiconductor integrated circuit, and
a second wiring provided independently of and apart from the first wiring, the second wiring being configured to receive the first power voltage in parallel to the first wiring receiving the first power voltage; and
a second semiconductor package that comprises:
a second semiconductor integrated circuit, and
a third wiring configured to be electrically connected to the second wiring of the first semiconductor package to receive the first power voltage, the third wiring being further configured to be electrically connected to the second semiconductor integrated circuit to convey the first power voltage to the second semiconductor integrated circuit;
the first semiconductor package further comprising a fourth wiring that is configured to connect the first and second wirings to each other.
3. The device as claimed in claim 2 , further comprising a printed circuit board, the first semiconductor package being mounted on the printed circuit board, and the second semiconductor package being stacked over the first semiconductor package.
4. The device as claimed in claim 3 , wherein the printed circuit board comprises a fifth wiring configured to receive the first power voltage and a sixth wiring configured to receive the first power voltage, the first wiring of the first semiconductor package being electrically connected to the fifth wiring and the second wiring of the first semiconductor package being electrically connected to the sixth wiring.
5. The device as claimed in claim 2 , wherein the first wiring comprises a first conductive through hole and a first bonding wire connecting the first conductive through hole to the first semiconductor integrated circuit, the second wiring comprising a second conductive through hole, and the third wiring comprises a third conductive through hole and a second boding wire connecting the third conductive though hole to the second semiconductor integrated circuit.
6. The device as claimed in claim 5 , wherein the fourth wiring comprises a conductive path embedded in the first semiconductor package.
7. The device as claimed in claim 5 , wherein the fourth wiring comprises a third bonding wire connecting the first and second wirings to each other.
8. The device as claimed in claim 2 , wherein the first semiconductor package further comprises:
a fifth wiring configured to receive a second power voltage that is different in level from the first power voltage, the fifth wiring being further configured to be electrically connected to the first semiconductor integrated circuit to convey the second power voltage to the first semiconductor integrated circuit, and
a sixth wiring provided independently of and apart from the fifth wiring, the sixth wiring being configured to receive the second power voltage in parallel to the fifth wiring receiving the second power voltage; and
the second semiconductor package further comprises:
a seventh wiring configured to be electrically connected to the sixth wiring of the first semiconductor package to receive the second power voltage, the seventh wiring being further configured to be electrically connected to the second semiconductor integrated circuit to convey the second power voltage to the second semiconductor integrated circuit, and
an eighth wiring configured to connect the fifth and sixth wirings to each other.
9. The device as claimed in claim 8 , further comprising a printed circuit board, the first semiconductor package being mounted on the printed circuit board, and the second semiconductor package being stacked over the first semiconductor package.
10. The device as claimed in claim 9 , wherein the printed circuit board comprises a ninth wiring configured to receive the first power voltage, a tenth wiring configured to receive the first power voltage, an eleventh wiring configured to receive the second power voltage and a twelfth wiring configured to receive the second power voltage,
the first wiring of the first semiconductor package being electrically connected to the ninth wiring,
the second wiring of the first semiconductor package being electrically connected to the tenth wiring,
the fifth wiring of the first semiconductor package being electrically connected to the eleventh wiring, and
the sixth wiring being electrically connected to the twelfth wiring.
11. The device as claimed in claim 10 , wherein the ninth and tenth wirings are connected to each other through a first conductive path and the eleventh and twelfth wirings are connected to each other through a second conductive path.
12. The device as claim in claim 2 , wherein the first semiconductor package further comprising:
a plurality of first signal wirings each configured to be electrically connected to the first semiconductor integrated circuit, and
a plurality of second signal wirings each provided independently of and apart from the first signal wirings; and
the second semiconductor package further comprises:
a plurality of third signal wirings each configured to be electrically connected to the second semiconductor integrated circuit and to an associated one of the second signal wirings.
13. The device as claimed in claim 12 , further comprising a printed circuit board, the first semiconductor package being mounted on the printed circuit board, and the second semiconductor package being stacked over the first semiconductor package.
14. The device as claimed in claim 13 , wherein the printed circuit board comprises a fifth wiring configured to receive the first power voltage and to be electrically connected to the first wiring,
a sixth wiring configured to receive the first power voltage and to be electrically connected to the second wiring,
a plurality of fourth signal wirings each configured to be electrically connected to an associated one of the first signal wirings, and
a plurality of fifth signal wirings each configured to be electrically connected to an associated one of the second signal wirings.