Patent ID: 8654096
Filing Date: 2014-02-18
Classification: G02F,G06F

Abstract:
1. A touch sensor device, comprising: a first human body contact part which forms a capacitance between a human body and the first human body contact part itself when the human body makes a contact or approaches thereto: a power supply part which outputs an AC voltage to the first human body contact part; a current detecting part which detects a current flown from the power supply part to the human body; a reference potential part to be a reference potential of the AC voltage; and a second human body contact part which is electrically connected to the reference potential part and to which the human body makes a contact, wherein: the first human body contact part includes an impedance face formed with a conductive film to which the human body makes a contact or approaches, and a plurality of electrodes which are provided on the impedance face and to which the AC voltage is applied; and the current detecting part includes a plurality of current detecting circuits which respectively detects currents flown in the plurality of electrodes, and wherein provided that capacitive impedance formed between the conductive film and the human body when the human body makes a contact or approaches to the conductive film is Z, and parasitic impedance connected in series to the capacitive impedance is Zp, “Zp/Z≦0.4” applies.