Semiconductor device and power receiving device
View Patent ↗An object is to provide a semiconductor device that is capable of wireless communication, such as an RFID tag, which can transmit and receive individual information without checking remaining capacity of a battery or changing batteries due to deterioration with time in the battery for a drive power supply voltage, and maintain a favorable a transmission/reception state even when electric power of an electromagnetic wave from a reader/writer is not sufficient. The semiconductor device includes a signal processing circuit, a first antenna circuit connected to the signal processing circuit, an antenna circuit group, a rectifier circuit group and a battery connected to the signal processing circuit. The first antenna circuit transmits and receives a signal for transmitting data stored in the signal processing circuit and drives a power supply circuit, and each antenna circuit of the antenna circuit group receives a signal for charging the battery and includes an antenna which has a different corresponding frequency.
1. A semiconductor device comprising:
a first antenna circuit and a first chip including a signal processing circuit over a first substrate; and
a second antenna circuit, a third antenna circuit, a battery, and a second chip including a rectifier circuit and a charging circuit over a second substrate,
wherein the first substrate and the second substrate are spaced apart from each other,
wherein the first antenna circuit and the first chip are interposed between the first substrate and the second substrate, and
wherein the battery overlaps with the first chip, the first antenna circuit and the second antenna circuit.
2. A semiconductor device according to claim 1 ,
wherein the first antenna circuit transmits a signal including data stored in the signal processing circuit and receives a signal including data to be stored in the signal processing circuit, and
wherein the second antenna circuit and the third antenna circuit receive electric power for charging the battery.
3. A semiconductor device according to claim 1 , further comprising:
a power supply circuit included in the signal processing circuit,
wherein the battery supplies electric power to the power supply circuit.
4. A semiconductor device according to claim 1 , wherein the battery is one selected from the group consisting of a lithium battery, a nickel metal hydride battery, a nickel cadmium battery, and an organic radical battery.
5. A semiconductor device according to claim 4 , wherein the lithium battery has a thickness of 10 to 100 μm.
6. A semiconductor device according to claim 1 , wherein the first antenna circuit and the third antenna circuit have a coil shape.
7. A semiconductor device comprising:
a first antenna circuit and a first chip including a signal processing circuit over a first substrate; and
a second antenna circuit, a third antenna circuit, a battery, and a second chip including a rectifier circuit and a charging circuit over a second substrate,
wherein the first substrate and the second substrate are spaced apart from each other,
wherein the first antenna circuit and the first chip are interposed between the first substrate and the second substrate,
wherein the battery is electrically connected to the first chip and the second chip, and
wherein the battery overlaps with the first chip, the first antenna circuit and the second antenna circuit.
8. A semiconductor device according to claim 7 ,
wherein the first antenna circuit transmits a signal including data stored in the signal processing circuit and receives a signal including data to be stored in the signal processing circuit, and
wherein the second antenna circuit and the third antenna circuit receive electric power for charging the battery.
9. A semiconductor device according to claim 7 , further comprising:
a power supply circuit included in the signal processing circuit,
wherein the battery supplies electric power to the power supply circuit.
10. A semiconductor device according to claim 7 , wherein the battery is one selected from the group consisting of a lithium battery, a nickel metal hydride battery, a nickel cadmium battery, and an organic radical battery.
11. A semiconductor device according to claim 10 , wherein the lithium battery has a thickness of 10 to 100 μm.
12. A semiconductor device according to claim 7 , wherein the first antenna circuit and the third antenna circuit have a coil shape.