| 摘要 |
According to the present invention, a flexible piezoelectric speaker includes: a flexible vibration panel, including a film type battery; and a piezoelectric element including a first electrode, a piezo-fiber composite structure, and a second electrode which are sequentially placed on the vibration panel. The fiber composite structure includes multiple piezoelectric ceramic rods connected to multiple piezoelectric ceramics across metal patterns in a longitudinal direction. The piezoelectric ceramic rods are arranged in parallel to each other and the piezoelectric ceramics and the metal patterns are arranged in a vertical direction. Adhesives are placed between the piezoelectric ceramic rods to connect the piezoelectric ceramic rods with each other. Therefore, the present invention is capable of minimizing damage to a flexible piezoelectric speaker, caused by external stress, securing flexibility, and enabling miniaturization while improving portability. Specifically, according to the present invention, the flexible piezoelectric speaker is able to be easily applied a wearable device, a vehicle, and an actuator. |
