Power storage device

A power storage device comprising:

• a first structural body having an antenna;
• a power supply control circuit having a semiconductor layer interposed between an insulating layer over the semiconductor layer and an insulating layer below the semiconductor layer, the power supply control circuit comprising a rectifier circuit, a switching circuit, a low-frequency signal generation circuit, and a power supply circuit;
• and
• a second structural body having a capacitor and a through electrode, the through electrode formed through the second structural body,
• wherein the antenna and the power supply control circuit are connected with the through electrode,
• wherein the switching circuit controls power that is supplied from the capacitor or the antenna to the power supply circuit in accordance with a signal from the low-frequency signal generation circuit, and
• wherein the second structural body has higher rigidity than the first structural body.

A power storage device comprising:

• a first structural body having an antenna;
• a second structural body having a capacitor and higher rigidity than the first structural body;
• and
• a power supply control circuit having a first connection electrode for connecting with the antenna and a second connection electrode for connecting with the capacitor, the power supply control circuit interposed between the first structural body and the second structural body,
• wherein the power supply control circuit comprises a rectifier circuit, a switching circuit, a low-frequency signal generation circuit, and a power supply circuit, and
• wherein the switching circuit controls power that is supplied from the capacitor or the antenna to the power supply circuit in accordance with a signal from the low-frequency signal generation circuit.