CA973974A - Electret transducer and method of making the same - Google Patents
Electret transducer and method of making the sameInfo
- Publication number
- CA973974A CA973974A CA158,462A CA158462A CA973974A CA 973974 A CA973974 A CA 973974A CA 158462 A CA158462 A CA 158462A CA 973974 A CA973974 A CA 973974A
- Authority
- CA
- Canada
- Prior art keywords
- making
- same
- electret transducer
- electret
- transducer
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title 1
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
-
- 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
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/02—Bonding areas; Manufacturing methods related thereto
- H01L2224/023—Redistribution layers [RDL] for bonding areas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/484—Connecting portions
- H01L2224/4847—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a wedge bond
- H01L2224/48472—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a wedge bond the other connecting portion not on the bonding area also being a wedge bond, i.e. wedge-to-wedge
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73251—Location after the connecting process on different surfaces
- H01L2224/73265—Layer and wire connectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/013—Alloys
- H01L2924/0132—Binary Alloys
- H01L2924/01322—Eutectic Alloys, i.e. obtained by a liquid transforming into two solid phases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/30—Technical effects
- H01L2924/301—Electrical effects
- H01L2924/3011—Impedance
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/30—Technical effects
- H01L2924/301—Electrical effects
- H01L2924/3025—Electromagnetic shielding
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP46097436A JPS4861126A (zh) | 1971-12-02 | 1971-12-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA973974A true CA973974A (en) | 1975-09-02 |
Family
ID=14192306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA158,462A Expired CA973974A (en) | 1971-12-02 | 1972-12-01 | Electret transducer and method of making the same |
Country Status (8)
Country | Link |
---|---|
US (1) | US3946422A (zh) |
JP (1) | JPS4861126A (zh) |
CA (1) | CA973974A (zh) |
DE (1) | DE2258949A1 (zh) |
FR (1) | FR2162230B1 (zh) |
GB (2) | GB1414978A (zh) |
IT (1) | IT973872B (zh) |
NL (1) | NL7216444A (zh) |
Families Citing this family (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5636233Y2 (zh) * | 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 (zh) * | 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 (zh) * | 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 |
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 |
JPS61500578A (ja) * | 1983-12-05 | 1986-03-27 | ポラロイド コ−ポレ−シヨン | 高エネルギ超音波トランスジユ−サ |
US4701640A (en) * | 1985-03-11 | 1987-10-20 | Telex Communications, Inc. | Electret transducer and method of fabrication |
EP0264478B1 (en) * | 1986-10-22 | 1990-08-29 | Fukuda Denshi Co., Ltd. | Device detecting breathing |
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 |
US7706554B2 (en) * | 2004-03-03 | 2010-04-27 | Panasonic Corporation | Electret condenser |
KR20060129041A (ko) * | 2004-03-05 | 2006-12-14 | 마츠시타 덴끼 산교 가부시키가이샤 | 일렉트릿 컨덴서 |
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 |
EP2256761A4 (en) * | 2008-02-22 | 2011-08-31 | Asahi Glass Co Ltd | ELECTRON AND CONVERTER WITH ELECTROSTATIC INDUCTION |
JP5267555B2 (ja) * | 2008-03-27 | 2013-08-21 | 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 |
CN101981456B (zh) * | 2008-03-31 | 2013-11-06 | 旭硝子株式会社 | 加速度传感器装置及传感器网络系统 |
EP2266795B1 (en) * | 2008-04-17 | 2015-07-01 | Asahi Glass Company, Limited | Electret and electrostatic induction conversion device |
WO2010032759A1 (ja) * | 2008-09-19 | 2010-03-25 | 旭硝子株式会社 | エレクトレット及び静電誘導型変換素子 |
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 |
US9060229B2 (en) | 2010-03-30 | 2015-06-16 | Cochlear Limited | 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 |
US11785375B2 (en) | 2021-06-15 | 2023-10-10 | Quiet, Inc. | Precisely controlled microphone acoustic attenuator with protective microphone enclosure |
Family Cites Families (10)
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 (zh) * | 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 |
-
1971
- 1971-12-02 JP JP46097436A patent/JPS4861126A/ja active Pending
-
1972
- 1972-12-01 GB GB1470375A patent/GB1414978A/en not_active Expired
- 1972-12-01 GB GB5563472A patent/GB1414977A/en not_active Expired
- 1972-12-01 CA CA158,462A patent/CA973974A/en not_active Expired
- 1972-12-01 DE DE19722258949 patent/DE2258949A1/de active Pending
- 1972-12-04 IT IT54456/72A patent/IT973872B/it active
- 1972-12-04 FR FR7243085A patent/FR2162230B1/fr not_active Expired
- 1972-12-04 NL NL7216444A patent/NL7216444A/xx not_active Application Discontinuation
-
1974
- 1974-05-30 US US05/474,657 patent/US3946422A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2162230A1 (zh) | 1973-07-13 |
GB1414977A (en) | 1975-11-26 |
NL7216444A (zh) | 1973-06-05 |
DE2258949A1 (de) | 1973-06-07 |
US3946422A (en) | 1976-03-23 |
GB1414978A (en) | 1975-11-26 |
IT973872B (it) | 1974-06-10 |
JPS4861126A (zh) | 1973-08-27 |
FR2162230B1 (zh) | 1980-08-14 |
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