WO1998023128A3 - Miniature silicon condenser microphone - Google Patents

Miniature silicon condenser microphone Download PDF

Info

Publication number
WO1998023128A3
WO1998023128A3 PCT/US1997/020942 US9720942W WO9823128A3 WO 1998023128 A3 WO1998023128 A3 WO 1998023128A3 US 9720942 W US9720942 W US 9720942W WO 9823128 A3 WO9823128 A3 WO 9823128A3
Authority
WO
WIPO (PCT)
Prior art keywords
jacket
silicon die
condenser microphone
transducer
acoustic
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US1997/020942
Other languages
French (fr)
Other versions
WO1998023128A2 (en
Inventor
Peter V Loeppert
David E Schafer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knowles Electronics LLC
Original Assignee
Knowles Electronics LLC
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 Knowles Electronics LLC filed Critical Knowles Electronics LLC
Priority to AT97948325T priority Critical patent/ATE288178T1/en
Priority to DE69732366T priority patent/DE69732366D1/en
Priority to EP97948325A priority patent/EP0940059B1/en
Priority to AU54412/98A priority patent/AU5441298A/en
Publication of WO1998023128A2 publication Critical patent/WO1998023128A2/en
Publication of WO1998023128A3 publication Critical patent/WO1998023128A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/02—Microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/49—Reducing the effects of electromagnetic noise on the functioning of hearing aids, by, e.g. shielding, signal processing adaptation, selective (de)activation of electronic parts in hearing aid
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Electric hearing aids
    • H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
    • H04R25/604—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Pressure Sensors (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

A housing for shielding a transducer of the type mounted on a silicon die attached to a flexible circuit. The housing provides a jacket which protects the silicon die from physical damage. The jacket, in cooperation with the top and bottom cups, further provides a shield for the silicon die from light and electromagnetic interferences. An acoustic port located on the top portion of the jacket furnishes the means by which acoustic energy enters the jacket to contact the transducer. A back cavity, formed between the bottom cup and the silicon die, serves as the acoustic pressure reference which allows the microphone to function properly.
PCT/US1997/020942 1996-11-21 1997-11-20 Miniature silicon condenser microphone Ceased WO1998023128A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT97948325T ATE288178T1 (en) 1996-11-21 1997-11-20 SILICON CAPACITOR SMALL MICROPHONE
DE69732366T DE69732366D1 (en) 1996-11-21 1997-11-20 SILICON CONDENSER MICROPHONE KLEIN
EP97948325A EP0940059B1 (en) 1996-11-21 1997-11-20 Miniature silicon condenser microphone
AU54412/98A AU5441298A (en) 1996-11-21 1997-11-20 Miniature silicon condenser microphone

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/752,584 1996-11-21
US08/752,584 US5740261A (en) 1996-11-21 1996-11-21 Miniature silicon condenser microphone

Publications (2)

Publication Number Publication Date
WO1998023128A2 WO1998023128A2 (en) 1998-05-28
WO1998023128A3 true WO1998023128A3 (en) 1998-08-13

Family

ID=25026915

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/020942 Ceased WO1998023128A2 (en) 1996-11-21 1997-11-20 Miniature silicon condenser microphone

Country Status (6)

Country Link
US (1) US5740261A (en)
EP (1) EP0940059B1 (en)
AT (1) ATE288178T1 (en)
AU (1) AU5441298A (en)
DE (1) DE69732366D1 (en)
WO (1) WO1998023128A2 (en)

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Also Published As

Publication number Publication date
ATE288178T1 (en) 2005-02-15
DE69732366D1 (en) 2005-03-03
EP0940059B1 (en) 2005-01-26
US5740261A (en) 1998-04-14
WO1998023128A2 (en) 1998-05-28
EP0940059A2 (en) 1999-09-08
AU5441298A (en) 1998-06-10

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