TW200726290A - Electro-acoustic transducer and manufacturing method thereof - Google Patents

Electro-acoustic transducer and manufacturing method thereof

Info

Publication number
TW200726290A
TW200726290A TW094144643A TW94144643A TW200726290A TW 200726290 A TW200726290 A TW 200726290A TW 094144643 A TW094144643 A TW 094144643A TW 94144643 A TW94144643 A TW 94144643A TW 200726290 A TW200726290 A TW 200726290A
Authority
TW
Taiwan
Prior art keywords
film member
vibrating film
audio amplifier
negative bias
back plates
Prior art date
Application number
TW094144643A
Other languages
Chinese (zh)
Other versions
TWI294250B (en
Inventor
Dar-Ming Chiang
Fan-Ching Lee
Feng-Zhao Yang
Jen-Luan Chen
Original Assignee
Ind Tech Res Inst
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ind Tech Res Inst filed Critical Ind Tech Res Inst
Priority to TW094144643A priority Critical patent/TW200726290A/en
Publication of TW200726290A publication Critical patent/TW200726290A/en
Application granted granted Critical
Publication of TWI294250B publication Critical patent/TWI294250B/zh

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  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

Disclosed are an electro-acoustic transducer and a manufacturing method thereof, which are applicable to an audio amplifier. The electro-acoustic transducer includes at least a vibrating film member, two conductive back plates respectively disposed on two opposite sidess of the vibrating film member and having a plurality of apertures, and two insulators respectively disposed between the vibrating film member and the two conductive back plates. The present invention features that the vibrating film member, which has opposite sides forming a plurality of nano-meso micro-pores and containing an electret material, once being charged is capable to keep higher positive or negative bias or the same positive or the same negative bias for a long time. After the two conductive back plates receive two in-phase or two out-of-phase alternating voltages outputted by the audio amplifier respectively, according to Coulomb's Law, the vibrating film member generates push-pull effect due to the electrostatic force, so that the vibrating film member vibrates and drives air to produce sound through the apertures of the conductive back plates. Since the vibrating film member can keep higher positive or negative bias or the same positive or the same negative bias for a long time after the vibrating film member is charged, the two in-phase or anti-phase alternating voltages outputted by the audio amplifier can be smaller. Relatively, the audio amplifier with small volume and low unit price can be utilized. Therefore, the present invention does not only satisfy the demands of future market and high tone quality, but also has advantages of power and cost saving.
TW094144643A 2005-12-16 2005-12-16 Electro-acoustic transducer and manufacturing method thereof TW200726290A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW094144643A TW200726290A (en) 2005-12-16 2005-12-16 Electro-acoustic transducer and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW094144643A TW200726290A (en) 2005-12-16 2005-12-16 Electro-acoustic transducer and manufacturing method thereof

Publications (2)

Publication Number Publication Date
TW200726290A true TW200726290A (en) 2007-07-01
TWI294250B TWI294250B (en) 2008-03-01

Family

ID=45068098

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094144643A TW200726290A (en) 2005-12-16 2005-12-16 Electro-acoustic transducer and manufacturing method thereof

Country Status (1)

Country Link
TW (1) TW200726290A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8311245B2 (en) 2008-12-30 2012-11-13 Beijing Funate Innovation Technology Co., Ltd. Thermoacoustic module, thermoacoustic device, and method for making the same
US8325949B2 (en) 2008-12-30 2012-12-04 Beijing Funate Innovation Technology Co., Ltd. Thermoacoustic device
TWI383691B (en) * 2008-10-31 2013-01-21 鴻海精密工業股份有限公司 Flexible sounding device
US8391520B2 (en) 2008-10-24 2013-03-05 Industrial Technology Research Institute Flat speaker unit and speaker device therewith
US8406450B2 (en) 2009-08-28 2013-03-26 Tsinghua University Thermoacoustic device with heat dissipating structure
US8452031B2 (en) 2008-04-28 2013-05-28 Tsinghua University Ultrasonic thermoacoustic device
US8457331B2 (en) 2009-11-10 2013-06-04 Beijing Funate Innovation Technology Co., Ltd. Thermoacoustic device
US8494187B2 (en) 2009-11-06 2013-07-23 Tsinghua University Carbon nanotube speaker
US8537640B2 (en) 2009-09-11 2013-09-17 Tsinghua University Active sonar system
US8615096B2 (en) 2009-08-07 2013-12-24 Tsinghua University Thermoacoustic device

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI367034B (en) 2008-08-01 2012-06-21 Ind Tech Res Inst Structure of a speaker unit
US8776367B2 (en) 2008-03-10 2014-07-15 National Taiwan University Method of manufacturing an electret film
TWI462598B (en) * 2008-08-06 2014-11-21 Univ Nat Taiwan Method of manufacturing electret films and loudspeakers comprising the same
TWI378733B (en) 2008-10-27 2012-12-01 Htc Corp Method for manufacturing electret diaphragm
US8411882B2 (en) 2008-10-31 2013-04-02 Htc Corporation Electronic device with electret electro-acoustic transducer
TWI405474B (en) 2008-12-31 2013-08-11 Htc Corp Flexible luminescent electro-acoustic transducer and electronic device using the same
TWI399987B (en) 2009-02-13 2013-06-21 Ind Tech Res Inst Multi-faceted speaker unit
TWI397324B (en) * 2009-03-06 2013-05-21 鴻海精密工業股份有限公司 Speaker system
TWI465118B (en) 2009-10-22 2014-12-11 Ind Tech Res Inst Electret diaphragm and speaker using the same
TWI455611B (en) * 2009-12-18 2014-10-01 Hon Hai Prec Ind Co Ltd Method for preparing diaphragm and diaphragm, and speaker having the same
TWI412284B (en) * 2009-12-18 2013-10-11 Hon Hai Prec Ind Co Ltd Centering piece and speaker having the centering piece

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8452031B2 (en) 2008-04-28 2013-05-28 Tsinghua University Ultrasonic thermoacoustic device
US8391520B2 (en) 2008-10-24 2013-03-05 Industrial Technology Research Institute Flat speaker unit and speaker device therewith
TWI383691B (en) * 2008-10-31 2013-01-21 鴻海精密工業股份有限公司 Flexible sounding device
US8345896B2 (en) 2008-12-30 2013-01-01 Beijing Funate Innovation Technology Co., Ltd. Thermoacoustic device
US8311245B2 (en) 2008-12-30 2012-11-13 Beijing Funate Innovation Technology Co., Ltd. Thermoacoustic module, thermoacoustic device, and method for making the same
US8379885B2 (en) 2008-12-30 2013-02-19 Beijing Funate Innovation Technology Co., Ltd. Thermoacoustic module, thermoacoustic device, and method for making the same
US8331587B2 (en) 2008-12-30 2012-12-11 Beijing Funate Innovation Technology Co., Ltd. Thermoacoustic module, thermoacoustic device, and method for making the same
US8325949B2 (en) 2008-12-30 2012-12-04 Beijing Funate Innovation Technology Co., Ltd. Thermoacoustic device
US8462965B2 (en) 2008-12-30 2013-06-11 Beijing Funate Innovation Technology Co., Ltd. Thermoacoustic module, thermoacoustic device, and method for making the same
US8763234B2 (en) 2008-12-30 2014-07-01 Beijing Funate Innovation Technology Co., Ltd. Method for making thermoacoustic module
US8615096B2 (en) 2009-08-07 2013-12-24 Tsinghua University Thermoacoustic device
US8406450B2 (en) 2009-08-28 2013-03-26 Tsinghua University Thermoacoustic device with heat dissipating structure
US8537640B2 (en) 2009-09-11 2013-09-17 Tsinghua University Active sonar system
US8494187B2 (en) 2009-11-06 2013-07-23 Tsinghua University Carbon nanotube speaker
US8457331B2 (en) 2009-11-10 2013-06-04 Beijing Funate Innovation Technology Co., Ltd. Thermoacoustic device

Also Published As

Publication number Publication date
TWI294250B (en) 2008-03-01

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