| 摘要 |
PROBLEM TO BE SOLVED: To provide an electroacoustic conversion film for attaining a flexible speaker, excellent in flexibility, humidity resistance and acoustic properties, capable of outputting stable voice sound even when being deformed, capable of being integrated into a flexible display, and to provide a flexible display using the same, a vocal cord microphone, and a sensor for a musical instrument.SOLUTION: The electroacoustic conversion film includes: a polymer composite piezoelectric body formed by dispersing piezoelectric body particles in a viscoelastic matrix composed of a polymer material having viscoelasticity at a room temperature; and a thin film electrode formed on both surfaces of the polymer composite piezoelectric body. A specific dielectric constant of the polymer material is lower than 10 at 25°C. |
