发明名称 |
PIEZOELECTRIC SPEAKER HAVING WEIGHT AND METHOD OF PRODUCING THE SAME |
摘要 |
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.
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申请公布号 |
US2013301856(A1) |
申请公布日期 |
2013.11.14 |
申请号 |
US201213651228 |
申请日期 |
2012.10.12 |
申请人 |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH IN;ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE |
发明人 |
KIM HYE JIN;YANG WOO SEOK |
分类号 |
H04R17/00;B32B37/00 |
主分类号 |
H04R17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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