CN101662718A - 薄膜扬声器 - Google Patents

薄膜扬声器 Download PDF

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Publication number
CN101662718A
CN101662718A CN200810304278A CN200810304278A CN101662718A CN 101662718 A CN101662718 A CN 101662718A CN 200810304278 A CN200810304278 A CN 200810304278A CN 200810304278 A CN200810304278 A CN 200810304278A CN 101662718 A CN101662718 A CN 101662718A
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CN
China
Prior art keywords
piezoelectric membrane
wafer speaker
conductive layer
cavity
speaker
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Pending
Application number
CN200810304278A
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English (en)
Inventor
邹志刚
胡国梁
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Shenzhen Futaihong Precision Industry Co Ltd
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Shenzhen Futaihong Precision Industry Co Ltd
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Application filed by Shenzhen Futaihong Precision Industry Co Ltd filed Critical Shenzhen Futaihong Precision Industry Co Ltd
Priority to CN200810304278A priority Critical patent/CN101662718A/zh
Priority to US12/342,922 priority patent/US20100054505A1/en
Publication of CN101662718A publication Critical patent/CN101662718A/zh
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)

Abstract

本发明提供一种薄膜扬声器，包括连接端子、压电薄膜及导电层，该导电层涂覆在该压电薄膜的表面上，该连接端子电连接于该导电层上，该压电薄膜形成有一空腔。

Description

薄膜扬声器
技术领域
本发明涉及一种扬声器，尤其是涉及一种薄膜扬声器。
背景技术
传统的扬声器是锥形扬声器，该锥形扬声器包括一个含有震动片的锥体和一个共鸣室。然而此种锥形扬声器存在体积大及重量大的问题。如此，薄膜扬声器应运而生。
现有的薄膜扬声器具有一压电薄膜。该压电薄膜具有压电性，即在通电的情况下会震动而发声。薄膜扬声器由于结构比较简单，成本较低而被广泛应用。
然而，所述薄膜扬声器装配于其它电子产品上时，需于该电子产品上预留一震动空间以便该压电薄膜震动发声。如此一来，则大大限制了薄膜扬声器的应用范围。
发明内容
有鉴于此，有必要提供一种自带震动空间的薄膜扬声器。
一种薄膜扬声器，包括连接端子、压电薄膜及导电层，该导电层涂覆在该压电薄膜的表面上，该连接端子电连接于该导电层上，该压电薄膜形成有一空腔。
与现有技术相比，所述薄膜扬声器由于其自身具有空腔作为震动空间，使得薄膜扬声器装配于其它电子产品上时，不需于该电子产品上预留一震动空间。
附图说明
图1是本发明薄膜扬声器较佳实施方式的立体分解示意图。
具体实施方式
请参阅图1所示的本发明薄膜扬声器较佳实施方式，该薄膜扬声器10包括二连接端子11、二压电薄膜12及一导电层13。
所述连接端子11一端电连接于该压电薄膜12，另一端电连接于驱动该薄膜扬声器10的外置设备(图未示)。
所述压电薄膜12是对一聚偏氟乙烯等树脂薄膜经过等离子表面处理而制成。该压电薄膜12具有压电性。该二压电薄膜12的边缘粘接在一起，其中部形成一空腔121。该空腔121用于提供压电薄膜12的震动空间，而且每一压电薄膜12直接产生的声音与另一压电薄膜12反射的声音进行有时差的干涉，从而产生了共鸣现象，进一步提高压电薄膜12的发声响度。
所述导电层13可以为金属或其它导电材质，其均匀涂覆在压电薄膜12的表面上，以便该连接端子11电连接于该压电薄膜12。
可以理解，该空腔121也可以由一压电薄膜12的周缘粘连在一起而围成。
所述薄膜扬声器10由于其自身具有空腔121作为震动空间，使得薄膜扬声器10装配于其它电子产品上时，不需于该电子产品上预留一震动空间，另外，该空腔121进一步提高压电薄膜12的发声响度。

Claims (4)

1.一种薄膜扬声器，包括连接端子、压电薄膜及导电层，该导电层涂覆在该压电薄膜的表面上，该连接端子电连接于该导电层上，其特征在于：该压电薄膜形成有一空腔。
2.如权利要求1所述的薄膜扬声器，其特征在于：所述压电薄膜的数量为两个，该二压电薄膜的边缘粘接在一起而围成该空腔。
3.如权利要求1所述的薄膜扬声器，其特征在于：所述压电薄膜的数量为一个，该压电薄膜的周缘粘连在一起而围成该空腔。
4.如权利要求1所述的薄膜扬声器，其特征在于：所述压电薄膜是对一聚偏氟乙烯经过等离子表面处理而制成。
CN200810304278A 2008-08-28 2008-08-28 薄膜扬声器 Pending CN101662718A (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN200810304278A CN101662718A (zh) 2008-08-28 2008-08-28 薄膜扬声器
US12/342,922 US20100054505A1 (en) 2008-08-28 2008-12-23 Film speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200810304278A CN101662718A (zh) 2008-08-28 2008-08-28 薄膜扬声器

Publications (1)

Publication Number Publication Date
CN101662718A true CN101662718A (zh) 2010-03-03

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ID=41725495

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200810304278A Pending CN101662718A (zh) 2008-08-28 2008-08-28 薄膜扬声器

Country Status (2)

Country Link
US (1) US20100054505A1 (zh)
CN (1) CN101662718A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103535053A (zh) * 2011-05-17 2014-01-22 株式会社村田制作所 平面型扬声器以及av设备

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5212736A (en) * 1990-08-08 1993-05-18 Pioneer Electronic Corporation Ribbon speaker
WO2001052400A1 (en) * 2000-01-07 2001-07-19 Arthur D. Little Enterprises, Inc. Mechanical-to-acoustical transformer and multi-media flat film speaker
JP4363801B2 (ja) * 2000-08-29 2009-11-11 富士彦 小林 圧電スピーカ
US20020196952A1 (en) * 2001-06-25 2002-12-26 Merry Electronics Co., Ltd. Piezoelectric transceiver
US7039206B2 (en) * 2001-06-28 2006-05-02 Nokia Corporation Dual diaphragm speaker
JP4034688B2 (ja) * 2002-08-28 2008-01-16 富士彦 小林 圧電スピーカ
FR2857785B1 (fr) * 2003-07-17 2005-10-21 Commissariat Energie Atomique Resonateur acoustique de volume a frequence de resonance ajustee et procede de realisation
US7322251B2 (en) * 2003-08-01 2008-01-29 Cidra Corporation Method and apparatus for measuring a parameter of a high temperature fluid flowing within a pipe using an array of piezoelectric based flow sensors
US7995777B2 (en) * 2005-10-03 2011-08-09 Xun Yu Thin film transparent acoustic transducer
US7605686B2 (en) * 2006-11-16 2009-10-20 Motorola, Inc. Alerting system for a communication device
US7839394B2 (en) * 2007-01-08 2010-11-23 Pegasus Technologies Ltd. Electronic pen device
JP2009188801A (ja) * 2008-02-07 2009-08-20 Panasonic Corp 圧電スピーカ
CN101895807B (zh) * 2009-05-19 2012-11-21 清华大学 平板扬声器

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103535053A (zh) * 2011-05-17 2014-01-22 株式会社村田制作所 平面型扬声器以及av设备
US9332353B2 (en) 2011-05-17 2016-05-03 Murata Manufacturing Co., Ltd. Plane-type speaker and AV apparatus
US9363607B2 (en) 2011-05-17 2016-06-07 Murata Manufacturing Co., Ltd. Plane-type speaker and AV apparatus
CN103535053B (zh) * 2011-05-17 2017-03-29 株式会社村田制作所 平面型扬声器以及av设备

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