Abstract
A flexible and transparent loudspeaker driven by piezoelectric polymer was proposed. The core structure was an assemblage of a flexible plastic film with piezoelectric polymer pasted over the whole surface. We fabricated a prototype loudspeaker using polyethersulfone (PES) and polyvinylidenefluoride (PVDF), and it had flexibility and transparency. Its acoustic characteristics and surface vibration mode were investigated. The investigation yielded low distortion characteristics in comparison with those of a loudspeaker made only of PVDF, and its advantages originated from the use of the plastic film as a diaphragm.
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