TW200715892A - Electroacoustic transducer - Google Patents

Electroacoustic transducer

Info

Publication number
TW200715892A
TW200715892A TW095130090A TW95130090A TW200715892A TW 200715892 A TW200715892 A TW 200715892A TW 095130090 A TW095130090 A TW 095130090A TW 95130090 A TW95130090 A TW 95130090A TW 200715892 A TW200715892 A TW 200715892A
Authority
TW
Taiwan
Prior art keywords
diaphragm
yoke
thin film
coil
small
Prior art date
Application number
TW095130090A
Other languages
Chinese (zh)
Inventor
Shigeyuki Minematsu
Kazumi Maruyama
Original Assignee
Fuji Elec Device Tech Co Ltd
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 Fuji Elec Device Tech Co Ltd filed Critical Fuji Elec Device Tech Co Ltd
Publication of TW200715892A publication Critical patent/TW200715892A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/04—Microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/024—Manufacturing aspects of the magnetic circuit of loudspeaker or microphone transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/08—Microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

A diaphragm (2) is supported on a substrate (1) having an opening. One plane of the diaphragm (2) faces the opening. A thin film coil (3) is a spiral coil having a flat plane shape wherein the coil goes around one axis. A yoke (5) is formed on a cover section (4), and a permanent magnet (6) is arranged at a center portion of the yoke (5). A space (7) is formed between the diaphragm (2) and the yoke (5). The thickness is reduced by forming the thin film coil (3) on the diaphragm (2). Since the space (7) between the permanent magnet (6) and the thin film coil (3) is small, a sufficient drive force for the diaphragm (2) can be obtained even with a small magnetic force. Thus, a thin, small and low-power consumption electro-acoustic transducer can be provided.
TW095130090A 2005-08-17 2006-08-16 Electroacoustic transducer TW200715892A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005236225 2005-08-17
JP2005334452 2005-11-18

Publications (1)

Publication Number Publication Date
TW200715892A true TW200715892A (en) 2007-04-16

Family

ID=37757585

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095130090A TW200715892A (en) 2005-08-17 2006-08-16 Electroacoustic transducer

Country Status (3)

Country Link
JP (1) JPWO2007020925A1 (en)
TW (1) TW200715892A (en)
WO (1) WO2007020925A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102948170A (en) * 2010-01-19 2013-02-27 缅因大学 Electrodynamic speaker structure having mems technology
TWI463881B (en) * 2012-01-13 2014-12-01 Sound Cheers Ltd Vibrating horn
CN106612485A (en) * 2015-10-23 2017-05-03 钰太芯微电子科技（上海）有限公司 MEMS microphone and sound receiving device

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100965740B1 (en) * 2007-09-19 2010-06-24 주식회사 이엠텍 Ultra slim type acoustic transducer
WO2009038246A1 (en) * 2007-09-19 2009-03-26 Em-Tech. Co., Ltd. Ultra slim type acoustic transducer
US8530981B2 (en) * 2009-12-31 2013-09-10 Texas Instruments Incorporated Leadframe-based premolded package having acoustic air channel for micro-electro-mechanical system
JP5975319B2 (en) * 2011-01-28 2016-08-23 国立大学法人九州工業大学 Spin device driven by elastic operation
JP4893860B1 (en) 2011-02-21 2012-03-07 オムロン株式会社 microphone
JP6156387B2 (en) * 2012-10-15 2017-07-05 日本電気株式会社 Electroacoustic transducer, manufacturing method thereof, and electronic apparatus using the electroacoustic transducer
MY168564A (en) * 2014-05-20 2018-11-13 Univ Kebangsaan Malaysia Ukm Electrodynamics (mems) micro speaker

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0238897U (en) * 1988-09-08 1990-03-15
JP3899651B2 (en) * 1998-03-20 2007-03-28 ソニー株式会社 Speaker device
JP2003305409A (en) * 2002-04-12 2003-10-28 Tokyo Parts Ind Co Ltd Thin electromagnetic acoustic transducer for mobile communication apparatus and method for using the same
WO2003094571A2 (en) * 2002-05-02 2003-11-13 Harman International Industries, Incorporated Electro-dynamic planar loudspeakers
JP2004056771A (en) * 2002-05-27 2004-02-19 Audio Technica Corp Vibrating membrane for electroacoustic transducer and electroacoustic transducer
JP2005184084A (en) * 2003-12-16 2005-07-07 Alps Electric Co Ltd System module

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102948170A (en) * 2010-01-19 2013-02-27 缅因大学 Electrodynamic speaker structure having mems technology
CN102948170B (en) * 2010-01-19 2016-01-20 缅因大学 There is the Electrodynamic speaker structure of MEMS technology
TWI463881B (en) * 2012-01-13 2014-12-01 Sound Cheers Ltd Vibrating horn
CN106612485A (en) * 2015-10-23 2017-05-03 钰太芯微电子科技（上海）有限公司 MEMS microphone and sound receiving device
CN106612485B (en) * 2015-10-23 2024-03-29 钰太芯微电子科技（上海）有限公司 MEMS microphone and radio device

Also Published As

Publication number Publication date
WO2007020925A1 (en) 2007-02-22
JPWO2007020925A1 (en) 2009-02-26

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