公开(公告)号：US09445200B2

公开(公告)日：2016-09-13

申请号：US13651228

申请日：2012-10-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hye Jin Kim ,  Woo Seok Yang

IPC: H04R7/26 ,  H04R17/00 ,  H04R7/04 ,  H04R31/00 ,  H04R7/20

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。

公开(公告)号：US08722446B2

公开(公告)日：2014-05-13

申请号：US13796018

申请日：2013-03-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jaewoo Lee ,  Chang Han Je ,  Woo Seok Yang ,  Jongdae Kim

IPC: H01L21/00

CPC classification number: H04R31/00 ,  H04R19/005 ,  H04R19/02

Abstract: Provided is an acoustic sensor. The acoustic sensor includes: a substrate including sidewall portions and a bottom portion extending from a bottom of the sidewall portions; a lower electrode fixed at the substrate and including a concave portion and a convex portion, the concave portion including a first hole on a middle region of the bottom, the convex portion including a second hole on an edge region of the bottom; diaphragms facing the concave portion of the lower electrode, with a vibration space therebetween; diaphragm supporters provided on the lower electrode at a side of the diaphragm and having a top surface having the same height as the diaphragm; and an acoustic chamber provided in a space between the bottom portion and the sidewall portions below the lower electrode.

Abstract translation: 提供了一种声学传感器。 声学传感器包括：基底，其包括侧壁部分和从侧壁部分的底部延伸的底部部分; 固定在所述基板上的下部电极，具有凹部和凸部，所述凹部包括在所述底部的中间区域的第一孔，所述凸部包括在所述底部的边缘区域上的第二孔; 隔膜面向下电极的凹部，其间具有振动空间; 隔膜支撑体设置在隔膜侧面的下电极上，具有与隔膜相同高度的顶表面; 以及设置在下部电极下方的底部和侧壁部之间的空间中的声学室。