Invention Grant
- Patent Title: Electret materials, electret speakers, and methods of manufacturing the same
- Patent Title (中): 驻极体材料，驻极体扬声器及其制造方法
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Application No.: US12186779Application Date: 2008-08-06
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Publication No.: US08111847B2Publication Date: 2012-02-07
- Inventor: Shih-Yuan Lee , Chih-Kung Lee , Wen-Ching Ko , Jia-Lun Chen , Ing Yih Leu , Wen-Hsin Hsiao , Wen-Jong Wu
- Applicant: Shih-Yuan Lee , Chih-Kung Lee , Wen-Ching Ko , Jia-Lun Chen , Ing Yih Leu , Wen-Hsin Hsiao , Wen-Jong Wu
- Applicant Address: TW
- Assignee: National Taiwan University
- Current Assignee: National Taiwan University
- Current Assignee Address: TW
- Agency: Lowe Hauptman Ham & Berner, LLP
- Priority: TW97100051A 20080102
- Main IPC: H04R19/02
- IPC: H04R19/02
Abstract:
A speaker comprises at least one electrode electrically coupled with an audio signal input and a film comprising at least one electret layer. The film is configured to interact with the electrode in response to an audio signal supplied by the audio signal input and to vibrate to generate sound waves. The electret layer is formed from a polymer-containing solution.
Public/Granted literature
- US20090169036A1 ELECTRET MATERIALS, ELECTRET SPEAKERS, AND METHODS OF MANUFACTURING THE SAME Public/Granted day:2009-07-02
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