GB1414978A - Electretand a method of making the same - Google Patents

Electretand a method of making the same

Info

Publication number
GB1414978A
GB1414978A GB1470375A GB1470375A GB1414978A GB 1414978 A GB1414978 A GB 1414978A GB 1470375 A GB1470375 A GB 1470375A GB 1470375 A GB1470375 A GB 1470375A GB 1414978 A GB1414978 A GB 1414978A
Authority
GB
United Kingdom
Prior art keywords
layers
layer
thickness
electret
charged
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.)
Expired
Application number
GB1470375A
Other languages
English (en)
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of GB1414978A publication Critical patent/GB1414978A/en
Expired 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
    • H04R19/00—Electrostatic transducers
    • H04R19/01—Electrostatic transducers characterised by the use of electrets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
    • H01G7/025—Electrets, i.e. having a permanently-polarised dielectric having an inorganic dielectric
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
    • H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W72/00—Interconnections or connectors in packages
    • H10W72/50—Bond wires
    • H10W72/531—Shapes of wire connectors
    • H10W72/5363—Shapes of wire connectors the connected ends being wedge-shaped
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W72/00—Interconnections or connectors in packages
    • H10W72/851—Dispositions of multiple connectors or interconnections
    • H10W72/874—On different surfaces
    • H10W72/884—Die-attach connectors and bond wires

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
GB1470375A 1971-12-02 1972-12-01 Electretand a method of making the same Expired GB1414978A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46097436A JPS4861126A (cg-RX-API-DMAC7.html) 1971-12-02 1971-12-02

Publications (1)

Publication Number Publication Date
GB1414978A true GB1414978A (en) 1975-11-26

Family

ID=14192306

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1470375A Expired GB1414978A (en) 1971-12-02 1972-12-01 Electretand a method of making the same
GB5563472A Expired GB1414977A (en) 1971-12-02 1972-12-01 Electret transducer

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB5563472A Expired GB1414977A (en) 1971-12-02 1972-12-01 Electret transducer

Country Status (8)

Country Link
US (1) US3946422A (cg-RX-API-DMAC7.html)
JP (1) JPS4861126A (cg-RX-API-DMAC7.html)
CA (1) CA973974A (cg-RX-API-DMAC7.html)
DE (1) DE2258949A1 (cg-RX-API-DMAC7.html)
FR (1) FR2162230B1 (cg-RX-API-DMAC7.html)
GB (2) GB1414978A (cg-RX-API-DMAC7.html)
IT (1) IT973872B (cg-RX-API-DMAC7.html)
NL (1) NL7216444A (cg-RX-API-DMAC7.html)

Families Citing this family (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5636233Y2 (cg-RX-API-DMAC7.html) * 1974-12-27 1981-08-26
FR2307357A1 (fr) * 1975-04-11 1976-11-05 Thomson Csf Structure monolithique de stockage de charges electriques, procede de mise en charge de cette structure et composants electroniques d'application
JPS5754399Y2 (cg-RX-API-DMAC7.html) * 1978-02-20 1982-11-25
CA1107382A (en) * 1978-11-03 1981-08-18 Beverley W. Gumb Electret microphone with simplified electrical connections by printed circuit board mounting
EP0013799B1 (en) * 1978-12-19 1985-10-02 Kabushiki Kaisha Toshiba Encoder for length or angle measuring devices with high accuracy
GB2044037B (en) * 1978-12-23 1983-03-23 Tokyo Shibaura Electric Co Electrostatic microphone
GB2079053B (en) * 1980-06-30 1984-03-28 Tokyo Shibaura Electric Co Electret device
JPS622879Y2 (cg-RX-API-DMAC7.html) * 1981-03-25 1987-01-22
DK146770C (da) * 1981-11-13 1984-06-04 Brueel & Kjaer As Kapacitiv transducer
GB2122842B (en) * 1982-05-29 1985-08-29 Tokyo Shibaura Electric Co An electroacoustic transducer and a method of manufacturing an electroacoustic transducer
AT374326B (de) * 1982-07-22 1984-04-10 Akg Akustische Kino Geraete Elektrostatischer wandler, insbesondere kondensatormikrophon
US4492825A (en) * 1982-07-28 1985-01-08 At&T Bell Laboratories Electroacoustic transducer
US4516428A (en) * 1982-10-28 1985-05-14 Pan Communications, Inc. Acceleration vibration detector
EP0164342A1 (en) * 1983-12-05 1985-12-18 Polaroid Corporation High energy ultrasonic transducer
US4701640A (en) * 1985-03-11 1987-10-20 Telex Communications, Inc. Electret transducer and method of fabrication
DE3673825D1 (de) * 1986-10-22 1990-10-04 Fukuda Denshi Kk Vorrichtung zum feststellen des atmens.
US4767973A (en) * 1987-07-06 1988-08-30 Sarcos Incorporated Systems and methods for sensing position and movement
JPH02149199A (ja) * 1988-11-30 1990-06-07 Matsushita Electric Ind Co Ltd エレクトレットコンデンサマイクロホン
NL9101381A (nl) * 1991-08-13 1993-03-01 Microtel Bv Elektreetstructuur, werkwijze voor het vervaardigen daarvan, en een elektro-akoestische transducent van het zgn. elektreet-type.
US5335286A (en) * 1992-02-18 1994-08-02 Knowles Electronics, Inc. Electret assembly
US5408534A (en) * 1992-03-05 1995-04-18 Knowles Electronics, Inc. Electret microphone assembly, and method of manufacturer
US5894452A (en) * 1994-10-21 1999-04-13 The Board Of Trustees Of The Leland Stanford Junior University Microfabricated ultrasonic immersion transducer
US5619476A (en) * 1994-10-21 1997-04-08 The Board Of Trustees Of The Leland Stanford Jr. Univ. Electrostatic ultrasonic transducer
US5574794A (en) * 1995-01-19 1996-11-12 Earmark, Inc. Microphone assembly for adhesive attachment to a vibratory surface
US5982709A (en) * 1998-03-31 1999-11-09 The Board Of Trustees Of The Leland Stanford Junior University Acoustic transducers and method of microfabrication
JP4697763B2 (ja) 2001-07-31 2011-06-08 パナソニック株式会社 コンデンサマイクロホン
US20070113964A1 (en) * 2001-12-10 2007-05-24 Crawford Scott A Small water-repellant microphone having improved acoustic performance and method of constructing same
JP2003230195A (ja) * 2002-02-06 2003-08-15 Hosiden Corp エレクトレットコンデンサマイクロホン
JP3908059B2 (ja) * 2002-02-27 2007-04-25 スター精密株式会社 エレクトレットコンデンサマイクロホン
US7620192B2 (en) * 2003-11-20 2009-11-17 Panasonic Corporation Electret covered with an insulated film and an electret condenser having the electret
JP4264103B2 (ja) * 2004-03-03 2009-05-13 パナソニック株式会社 エレクトレットコンデンサーマイクロホン
US7853027B2 (en) * 2004-03-05 2010-12-14 Panasonic Corporation Electret condenser
JP2006050385A (ja) * 2004-08-06 2006-02-16 Matsushita Electric Ind Co Ltd 耐熱型エレクトレットコンデンサマイクロホン
JP5241091B2 (ja) * 2006-10-13 2013-07-17 日本電波工業株式会社 超音波探触子
JP5446879B2 (ja) * 2008-02-22 2014-03-19 旭硝子株式会社 エレクトレットおよび静電誘導型変換素子
EP2266792B1 (en) * 2008-03-27 2016-05-04 Asahi Glass Company, Limited Electret and electrostatic induction conversion device
WO2009123022A1 (ja) * 2008-03-31 2009-10-08 旭硝子株式会社 加速度センサ装置及びセンサネットワークシステム
KR20110008009A (ko) * 2008-04-17 2011-01-25 아사히 가라스 가부시키가이샤 일렉트릿 및 정전 유도형 변환 소자
CN102159649B (zh) * 2008-09-19 2014-04-16 旭硝子株式会社 驻极体及静电感应型转换元件
JP5705454B2 (ja) * 2009-04-27 2015-04-22 日東電工株式会社 エレクトレット材および静電型音響変換器
US8855350B2 (en) * 2009-04-28 2014-10-07 Cochlear Limited Patterned implantable electret microphone
TWI444052B (zh) * 2009-12-17 2014-07-01 Ind Tech Res Inst 電容式傳感器及其製造方法
CN102196345A (zh) * 2010-03-03 2011-09-21 财团法人工业技术研究院 电容式传感器及其制造方法
WO2011123552A1 (en) * 2010-03-30 2011-10-06 Otologics, Llc Low noise electret microphone
DE102012218725A1 (de) 2012-10-15 2014-04-17 Robert Bosch Gmbh Mikroelektromechanisches Bauelement und Verfahren zur Herstellung eines mikroelektromechanischen Bauelementes
DE102015216200A1 (de) * 2015-08-25 2017-03-02 Robert Bosch Gmbh Akustischer Sensor mit einem Gehäuse und einem an diesem Gehäuse angeordneten Membranelement
USD867346S1 (en) * 2018-01-19 2019-11-19 Dynamic Ear Company B.V. Ambient filter
US12253391B2 (en) 2018-05-24 2025-03-18 The Research Foundation For The State University Of New York Multielectrode capacitive sensor without pull-in risk
US12445761B2 (en) 2021-06-15 2025-10-14 Quiet, Inc. Precisely controlled microphone acoustic attenuator with protective microphone enclosure
US11785375B2 (en) 2021-06-15 2023-10-10 Quiet, Inc. Precisely controlled microphone acoustic attenuator with protective microphone enclosure
DE102023103428A1 (de) * 2023-02-13 2024-08-14 Technische Universität Darmstadt, Körperschaft des öffentlichen Rechts Elektromechanisches Wandlerelement

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3300585A (en) * 1963-09-04 1967-01-24 Northern Electric Co Self-polarized electrostatic microphone-semiconductor amplifier combination
US3400383A (en) * 1964-08-05 1968-09-03 Texas Instruments Inc Trainable decision system and adaptive memory element
US3624312A (en) * 1964-10-24 1971-11-30 Tesla Np Electret microphone
GB1135737A (cg-RX-API-DMAC7.html) * 1965-10-23 1900-01-01
US3436492A (en) * 1966-01-17 1969-04-01 Northern Electric Co Field effect electroacoustic transducer
US3748727A (en) * 1968-07-11 1973-07-31 W Swain Method of making electret transducers
US3701865A (en) * 1971-06-25 1972-10-31 Industrial Research Prod Inc Acoustic transducer having diaphragm pivoted in its surround
US3740496A (en) * 1971-11-08 1973-06-19 Industrial Research Prod Inc Diaphragm assembly for electret transducer
US3742152A (en) * 1971-11-22 1973-06-26 Anvar Ultrasonic transducers
US3786495A (en) * 1972-05-17 1974-01-15 Ncr Stored charge transducer

Also Published As

Publication number Publication date
US3946422A (en) 1976-03-23
DE2258949A1 (de) 1973-06-07
GB1414977A (en) 1975-11-26
JPS4861126A (cg-RX-API-DMAC7.html) 1973-08-27
IT973872B (it) 1974-06-10
FR2162230A1 (cg-RX-API-DMAC7.html) 1973-07-13
CA973974A (en) 1975-09-02
NL7216444A (cg-RX-API-DMAC7.html) 1973-06-05
FR2162230B1 (cg-RX-API-DMAC7.html) 1980-08-14

Similar Documents

Publication Publication Date Title
GB1414977A (en) Electret transducer
US4615105A (en) Electroacoustic transducer and a method for manufacturing thereof
KR880009430A (ko) 반도체 장치 제조방법
ES2099225T3 (es) Matriz de transductores en electreto y tecnica de fabricacion.
JPS5232280A (en) Semiconductor element using electrostatically bonded dielectric ion semiconductor substrate and method of producing same
EP0090845A1 (en) CAPACITIVE PRESSURE TRANSDUCER WITH SILICON-GLASS-SILICON.
AU560217B2 (en) Method of making electrode
US5245504A (en) Methodology for manufacturing hinged diaphragms for semiconductor sensors
JPS54116888A (en) Manufacture of dielectric separate substrate
US4139444A (en) Method of reticulating a pyroelectric vidicon target
JPS55154743A (en) Semiconductor device and method of fabricating the same
JPS5772321A (en) Manufacture of seiconductor device
JPS58169768A (ja) 乾電池用封印テ−プの製造方法
GB1179535A (en) Bonding an Insulator to an Insulator
JPS5568796A (en) Manufacture of speaker diaphragm
JPS6482608A (en) Method of manufacture of a plurality of beam lead capacitors and capacitors manufactured by the method
JPS6132338Y2 (cg-RX-API-DMAC7.html)
WO1991010120A3 (en) Semiconductor cavity device with electric lead
JPS5717129A (en) Manufacture of semiconductor device
GB1312508A (en) Capacitive transducers
GB1453848A (en) Method of making a transducer
JPS5824941Y2 (ja) 電気メッキ用治具
JPS5772350A (en) Fabrication of semiconductor device
JPS57206060A (en) Manufacturing method for semiconductor device
JPS5475987A (en) Mounting structure of semiconductor device using beam lead-type package

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee