IC card having a mica capacitor
AssigneeSony Chemicals Corp.
InventorsNobukazu Kuroda, Kazuaki Suzuki
Life of this patent
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Abstract
An IC card 10A has a mica capacitor 5, an antenna coil 2 and an IC chip 3 formed on an insulating substrate 1, where the mica capacitor is composed of a mica film 6 and electrodes 7a and 7b formed on both sides of the mica film 6. terminal of the electrode 7b on one side of the mica capacitor 5 is formed on the other side of the mica capacitor 5, and this terminal and a terminal of the electrode 7a on the other side are connected on the insulating substrate 1 with the use of an anisotropic conductive adhesive 4. Thus, an IC card can be manufactured at low cost, in which the resonance frequency is stabilized and the antenna characteristics are improved.
Claims12
An IC card comprising a mica capacitor having a single-sided electrode region formed on a portion of the mica capacitor, an antenna coil and an IC chip formed on a substrate, the mica capacitor comprising a mica film and electrodes formed on both sides of the mica film, wherein a terminal of an electrode on one side of the mica capacitor is formed on the other side of the mica capacitor, and the terminal of the electrode on the one side and a terminal of the electrode on the other side are wirelessly connected on the substrate by an anisotropic conductive adhesive, and wherein the single-sided electrode region comprises one of the electrodes and the mica film.
A mica capacitor for an IC card having a substrate, the mica capacitor having a single-sided electrode region formed on a portion of the mica capacitor, the mica capacitor comprising a mica film and electrodes formed on both sides of the mica film, wherein a terminal of an electrode on one side of the mica capacitor is formed on the other side of the mica capacitor, and the terminal of the electrode on the one side and a terminal of the electrode on the other side are wirelessly connected on the substrate by an anisotropic conductive adhesive, and wherein the single-sided electrode region comprises one of the electrodes and the mica film.
Dependencies are inferred from the claim text.