Abstract: The present invention provides a thin-film capacitor device having a charging circuit and a discharge circuit and capable of stably producing a constant voltage during discharging a thin-film capacitor by an inexpensive configuration. The thin-film capacitor device is characterized by a hybrid type for temporarily storing charge upon receiving DC current from the thin-film capacitor while the voltage becomes lowering, and for supplying DC current in a state of a DC/DC inverter having a base voltage remaining so that a discharge effect continues until the amount of storage in the thin-film capacitor completely runs out.

Abstract: The present invention provides a thin-film capacitor device having a charging circuit and a discharge circuit and capable of stably producing a constant voltage during discharging a thin-film capacitor by an inexpensive configuration. The thin-film capacitor device is characterized by a hybrid type for temporarily storing charge upon receiving DC current from the thin-film capacitor while the voltage becomes lowering, and for supplying DC current in a state of a DC/DC inverter having a base voltage remaining so that a discharge effect continues until the amount of storage in the thin-film capacitor completely runs out.

Abstract: The invention provides a compact, electrical energy storage device which has large capacity and can produce a high electrical energy. In accordance with the electrical energy storage device of the invention, the electrical energy storage device 1 comprising a first electrode 4, a dielectric layer 6 and a second electrode 7 is characterized in that between the first electrode 4 and the dielectric layer 6 and between the second electrode 7 and the dielectric layer 6 there is formed an electron collector layer 6 comprising electron collector microparticles 5a made up of metal, semiconductor or surface-modified ceramics.