公开(公告)号：US20130301856A1

公开(公告)日：2013-11-14

申请号：US13651228

申请日：2012-10-12

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH IN

Inventor： Hye Jin KIM ,  Woo Seok YANG

IPC: H04R17/00 ,  B32B37/00

CPC classification number: H04R7/26 ,  H04R7/04 ,  H04R7/20 ,  H04R17/00 ,  H04R31/003 ,  H04R2307/023 ,  H04R2307/025 ,  H04R2307/027 ,  H04R2307/207 ,  H04R2499/11 ,  H04R2499/15 ,  Y10T156/10

Abstract: The present disclosure relates to a piezoelectric speaker having a weight that enables a frequency response characteristic of the piezoelectric speaker to be uniform by disposing a weight of a flexible material on an acoustic diaphragm or on and below an acoustic diaphragm of the piezoelectric speaker, thereby enhancing flatness of sound. The piezoelectric speaker having the weight includes a piezoelectric device having a piezoelectric layer and an electrode formed on or on and below the piezoelectric layer to apply an electrical signal to the piezoelectric layer; an acoustic diaphragm having a wider area than the piezoelectric device and bonded on one surface of the piezoelectric device; a frame disposed in a form that surrounds a side surface of the acoustic diaphragm; and a weight disposed above the acoustic diaphragm or above and below the acoustic diaphragm on which the piezoelectric device is disposed to thereby control a vibration.

Abstract translation: 本发明涉及一种压电扬声器，其具有能够通过将柔性材料的重量设置在声膜上或压电扬声器的声膜上或下方而使压电扬声器的频率响应特性能够均匀的重量，由此增强 声音平坦度 具有该重量的压电扬声器包括具有压电层和形成在压电层上或之下的电极的压电器件，以将电信号施加到压电层; 隔膜，其压电元件的面积比压电元件宽; 以围绕声膜的侧表面的形式设置的框架; 以及设置在声膜上方或配置有压电装置的声膜上方和下方的重物，从而控制振动。