JPS4840084B1 - - Google Patents

Info

Publication number
JPS4840084B1
JPS4840084B1 JP44092079A JP9207969A JPS4840084B1 JP S4840084 B1 JPS4840084 B1 JP S4840084B1 JP 44092079 A JP44092079 A JP 44092079A JP 9207969 A JP9207969 A JP 9207969A JP S4840084 B1 JPS4840084 B1 JP S4840084B1
Authority
JP
Japan
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.)
Pending
Application number
JP44092079A
Other languages
Japanese (ja)
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 filed Critical
Priority to JP44092079A priority Critical patent/JPS4840084B1/ja
Priority to DE19702055683 priority patent/DE2055683B2/en
Priority to CA097,918A priority patent/CA949674A/en
Priority to ZA707721A priority patent/ZA707721B/en
Priority to US090771A priority patent/US3894199A/en
Priority to GB5488770A priority patent/GB1302430A/en
Priority to FR7041582A priority patent/FR2067388A1/fr
Publication of JPS4840084B1 publication Critical patent/JPS4840084B1/ja
Pending legal-status Critical Current

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
    • H04R19/00—Electrostatic transducers
    • H04R19/01—Electrostatic transducers characterised by the use of electrets
    • H04R19/013—Electrostatic transducers characterised by the use of electrets for loudspeakers
JP44092079A 1969-11-19 1969-11-19 Pending JPS4840084B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP44092079A JPS4840084B1 (en) 1969-11-19 1969-11-19
DE19702055683 DE2055683B2 (en) 1969-11-19 1970-11-12 ELECTROSTATIC ELECTROACOUSTIC CONVERTER
CA097,918A CA949674A (en) 1969-11-19 1970-11-12 Electrostatic electroacoustic transducer
ZA707721A ZA707721B (en) 1969-11-19 1970-11-16 An electrostatic electro-acoustic transducer
US090771A US3894199A (en) 1969-11-19 1970-11-18 Electret electrostatic electroacoustic transducer
GB5488770A GB1302430A (en) 1969-11-19 1970-11-18
FR7041582A FR2067388A1 (en) 1969-11-19 1970-11-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44092079A JPS4840084B1 (en) 1969-11-19 1969-11-19

Publications (1)

Publication Number Publication Date
JPS4840084B1 true JPS4840084B1 (en) 1973-11-28

Family

ID=14044426

Family Applications (1)

Application Number Title Priority Date Filing Date
JP44092079A Pending JPS4840084B1 (en) 1969-11-19 1969-11-19

Country Status (7)

Country Link
US (1) US3894199A (en)
JP (1) JPS4840084B1 (en)
CA (1) CA949674A (en)
DE (1) DE2055683B2 (en)
FR (1) FR2067388A1 (en)
GB (1) GB1302430A (en)
ZA (1) ZA707721B (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA989514A (en) * 1972-09-08 1976-05-18 Loh-Yi Chang Electromechanical transducer and method of making same
JPS5419172B2 (en) * 1973-07-23 1979-07-13
US4224540A (en) * 1978-08-10 1980-09-23 Shigeo Okubo Displacement current sensor
JPH02149199A (en) * 1988-11-30 1990-06-07 Matsushita Electric Ind Co Ltd Electlet condenser microphone
FI20010766A0 (en) * 2001-04-11 2001-04-11 Panphonics Oy Electromechanical converter and method of energy conversion
JP4103875B2 (en) * 2004-09-16 2008-06-18 セイコーエプソン株式会社 Ultrasonic transducer, ultrasonic speaker, acoustic system, and control method of ultrasonic transducer
JP4103877B2 (en) * 2004-09-22 2008-06-18 セイコーエプソン株式会社 Electrostatic ultrasonic transducer and ultrasonic speaker
FI119794B (en) * 2005-04-28 2009-03-13 Panphonics Oy Electrostatic converter, method of its connection and method of manufacture
US8559660B2 (en) * 2007-07-12 2013-10-15 Industrial Technology Research Institute Electrostatic electroacoustic transducers
US8391520B2 (en) * 2008-10-24 2013-03-05 Industrial Technology Research Institute Flat speaker unit and speaker device therewith
TWI340602B (en) * 2007-09-06 2011-04-11 Ind Tech Res Inst Structure and manufactruign method of a electrostatic loudspeaker
TWI343756B (en) * 2009-08-10 2011-06-11 Ind Tech Res Inst Flat loudspeaker structure
TWI367034B (en) * 2008-08-01 2012-06-21 Ind Tech Res Inst Structure of a speaker unit
TWI330500B (en) * 2007-09-04 2010-09-11 Ind Tech Res Inst Speaker structure
US8625824B2 (en) 2007-09-04 2014-01-07 Industrial Technology Research Institute Flat speaker unit and speaker device therewith
US8184833B2 (en) * 2007-12-14 2012-05-22 Sony Ericsson Mobile Communications Ab Electrostatic speaker arrangement for a mobile device
TWI364995B (en) * 2008-12-18 2012-05-21 Ind Tech Res Inst Assembly structure of planar speaker
TWI399987B (en) * 2009-02-13 2013-06-21 Ind Tech Res Inst Multi-directional flat speaker device
TW201038086A (en) * 2009-04-09 2010-10-16 Ind Tech Res Inst Electrostatic speaker
TWI419577B (en) * 2009-12-23 2013-12-11 Ind Tech Res Inst Method and device of manufacturing speaker
TWM395976U (en) * 2010-06-30 2011-01-01 Tsung-Hung Wu Electret electroacoustic transducer
TW201204062A (en) * 2010-07-15 2012-01-16 Taiwan Electrets Electronics Co Ltd Electrostatic speaker and manufacturing method thereof and conducting plate of the speaker
TW201220862A (en) * 2010-11-03 2012-05-16 Ind Tech Res Inst Driving Interface device adaptive to a flat speaker
WO2014100012A1 (en) * 2012-12-20 2014-06-26 The Regents Of The University Of California Electrostatic graphene speaker
KR20160068059A (en) 2014-12-04 2016-06-15 삼성디스플레이 주식회사 Piezoelectric element comprising mesoporous piezoelectric thin film

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3118022A (en) * 1961-08-07 1964-01-14 Bell Telephone Labor Inc Electroacoustic transducer
DE1247401B (en) * 1964-10-24 1967-08-17 Tesla Np Electret microphone and its assembly method
JPS4815867B1 (en) * 1969-08-28 1973-05-17

Also Published As

Publication number Publication date
GB1302430A (en) 1973-01-10
DE2055683B2 (en) 1972-10-05
CA949674A (en) 1974-06-18
US3894199A (en) 1975-07-08
ZA707721B (en) 1971-08-25
FR2067388A1 (en) 1971-08-20
DE2055683A1 (en) 1971-06-03

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