PIEZOELECTRIC SPEAKER HAVING WEIGHT AND METHOD OF PRODUCING THE SAME

摘要

The present invention relates to a piezoelectric speaker with a weight and a manufacturing method thereof, capable of improving the flatness of a sound by uniformly forming the frequency response properties of the piezoelectric speaker by attaching the weight which is made of soft materials to the upper side or the lower side of a diaphragm of the piezoelectric speaker. The piezoelectric speaker with the weight includes a piezoelectric device which includes a piezoelectric layer and an electrode which is formed on the upper side or the lower side of the piezoelectric layer and applies an electric signal to the piezoelectric layer; a diaphragm which is wider than the piezoelectric device and is attached to one side of the piezoelectric device; a frame which is attached to surround the side of the diaphragm; and the weight which is attached to the upper side or the lower side of the diaphragm to which the piezoelectric device is attached and controls vibration.