Patent ID: 7502015

Claim:
A touch panel device comprising: a touch area arranged at the middle portion of a transparent substrate; and at least one transducer for excitation arranged at a peripheral portion of the touch area, the transducer for excitation including a film-like piezoelectric element and two electrodes for excitation, at least one transducer for reception arranged at a peripheral portion of the touch area, the transducer for reception including a film-like piezoelectric element and two electrodes for reception, at least one of the two electrodes for excitation being a comb-like electrode including plural comb-like electrode fingers and a linear bus electrode to which one end of each of the plural comb-like electrode fingers is connected, at least one connection portion for one of the two electrodes for excitation being disposed in one of two areas delimited in a middle of a length direction of the linear bus electrode, and at least one connection portion for the other electrode of the two electrodes for excitation being disposed in the other area of the two areas.