Title:
ハイブリッドスピーカー
Document Type and Number:
Japanese Patent JP2008521330
Kind Code:
A
Abstract:
Provided is a hybrid speaker including a vibration diaphragm having a conductive coating layer formed by coating a conductive material for forming an electrode on a surface of a polymer film and an aerogel layer formed by coating aerogel on the other surface of the polymer film, a piezo element disposed at a surface of the vibration diaphragm, forming opposite poles with the vibration diaphragm, and generating sound pressure by a piezoelectric effect, a PCB electrically connected to the vibration diaphragm and the piezo element and applying an external AC voltage, a first insulation body disposed on the other surface of the vibration diaphragm opposite to the piezo element, and a case accommodating and fixing the above constituent elements and having a sonnd pressure discharge hole in a surface thereof.
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Inventors:
Hwan Kyun Huang
Application Number:
JP2007542871A
Publication Date:
June 19, 2008
Filing Date:
December 21, 2004
Export Citation:
Assignee:
Hwan Kyun Huang
International Classes:
H04R23/02; H04R17/00; H04R19/02
Domestic Patent References:
| JP2001095091A | 2001-04-06 | |||
| JPH11509469A | 1999-08-24 | |||
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Foreign References:
| US5748758A | 1998-05-05 |
Attorney, Agent or Firm:
Tsuyoshi Takahashi
Masakazu Takahashi
Tomokazu Takahashi
Masakazu Takahashi
Tomokazu Takahashi