| 摘要 |
A case for inputting a signal is provided to be used as an additional signal inputting device correspondingly to miniaturization of a mobile communication terminal by arranging electrodes on a surface. A case for inputting a signal comprises plural sensing electrodes(410a,410b) arranged on its outer surface, and lower electrodes(420a,420b) arranged on its inner surface. The lower electrodes(420a,420b) are connected to an IC(Integrated Circuit) for a signal process and can sense a contact. The lower electrodes can sense a contact of a user by measuring a variation of a capacitor. A material of the case has to be thin and has insulation property in order to use the case itself as a signal inputting device by using distributed capacitors.
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