发明名称 |
Audio transducers |
摘要 |
A device (MS) having an electrical display (DSPL) is equipped with a transparent electrostatic diaphragm (ACT) vibrateably attached in front of the display. The display has been made electrically conductive and used as a stator of thus formed electrostatic speaker (TD1). A fluctuating DC-voltage is conducted to the diaphragm and display in order to resonate the diaphragm and produce sound respective to the fluctuation. The transparency of the diaphragm allows a user to see the display through the diaphragm. Alternatively, the similar arrangement can be used to implement a transparent electrostatic microphone on the display.
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申请公布号 |
US6785393(B2) |
申请公布日期 |
2004.08.31 |
申请号 |
US20000727221 |
申请日期 |
2000.11.30 |
申请人 |
NOKIA MOBILE PHONES, LTD. |
发明人 |
LIPPONEN MARKKU;NOKKONEN ERKKI;HAAVISTO JANNE |
分类号 |
H04R1/02;H04R7/02;H04R19/00;H04R19/02;(IPC1-7):H04R25/00 |
主分类号 |
H04R1/02 |
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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