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    • 10. 发明专利
    • IC CARD WITH SOLAR CELL
    • JPH01118497A
    • 1989-05-10
    • JP17309988
    • 1988-07-12
    • OKI ELECTRIC IND CO LTDTOA NENRYO KOGYO KK
    • OTA SATORUTANAGAWA KOJIYAMAMOTO HIDEOKUMAGAI KEIJI
    • G06K19/07B42D15/02B42D15/10G06K19/00H01L31/04
    • PURPOSE: To enable reduction of formation area of a solar battery and to enhance operability and a display function by arranging a photoelectric energy conversion layer formed of three layers consisting of a p-type layer, an i-type layer and an n-type layer in the solar battery and providing a power transfer means, which is changed over to the solar battery or the mains in accordance with voltage value on an external ready access type terminal, in the inside of an integrated circuit. CONSTITUTION: A solar battery 24 is provided with a substrate 30 constituting an electrode of one hand. A photoelectric energy conversion layer formed of three layers, which consist of a p-type later consisting of a-Si:C:H or a-Si:N:H:, an i-type later consisting of a-Si:H and an n-type layer consisting of microcrystal Si:H, is laminated on the substrate 30. Furthermore, a transparent electrode 34 constituting the other electrode is fitted thereon and a protective resist 35 is respectively fitted on the electrode 36. An IC 26 provided in the inside of a card 21 is equipped with a CPU having an operation function, a switch circuit changing over an internal power source and an external power source and a voltage detection circuit. Further, a power transfer means is constituted of the voltage detection circuit and a switch circuit.