WO2006115045A1 - エレクトレットコンデンサマイクロホン - Google Patents
エレクトレットコンデンサマイクロホン Download PDFInfo
- Publication number
- WO2006115045A1 WO2006115045A1 PCT/JP2006/307668 JP2006307668W WO2006115045A1 WO 2006115045 A1 WO2006115045 A1 WO 2006115045A1 JP 2006307668 W JP2006307668 W JP 2006307668W WO 2006115045 A1 WO2006115045 A1 WO 2006115045A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electret condenser
- substrate
- condenser microphone
- capsule
- top plate
- Prior art date
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
- H04R19/016—Electrostatic transducers characterised by the use of electrets for microphones
-
- 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
- H04R19/04—Microphones
Definitions
- the present invention relates to an electret condenser microphone that prevents a soldering defect and a tilt from occurring in microphone mounting.
- FIG. 4 shows an example of a conventional electret condenser microphone.
- This electret condenser microphone has a diaphragm metal ring 3, a diaphragm 4, a spacer 5, a back electrode 6, a back electrode holder 7, a gate ring 8,
- Each component such as the board 12 is laminated in the direction away from the sound hole 1, and the end of the capsule 2 is caulked on the ground electrode pattern 14 of the base plate 12 at the upper end of the component 1 3
- the substrate 12 has a conductor pattern 9 and an electronic circuit 10 provided inside the electret condenser microphone, and a terminal electrode pattern 11 provided outside the electret condenser microphone.
- the electrode patterns 11 and 14 and the conductor pattern 9 are formed by plating or the like, and the thickness of these pattern portions is determined by control in the plating process.
- Patent Document 1 International Publication WO 2005/013641 A1
- Patent Document 2 JP 2003-153392 A
- the external terminal electrode pattern 11 is solder-connected to the terminal of the mounting board (not shown) in the soldering process in the reflow bath.
- Patent Documents 1 and 2 in order to smooth the soldering process in the reflow bath, to prevent soldering defects due to short circuits, etc., or to reduce the effect of heat on the curled part.
- the terminal electrode pattern 11 formed on the substrate 12 is protruded from the top of the curled portion 13 of the capsule 2 to perform the soldering process in the reflow bath.
- the thickness of the pattern varies even when the control is performed.
- the thickness of the component laminated in the capsule 2 is not enough. Variations accumulate, and further, the amount of protrusion of the curled portion 13 varies depending on the processing accuracy of the curled portion 13. As a result, the protruding amount of the terminal electrode pattern 11 with respect to the curled portion 13 was not stable, and poor soldering in the reflow bath or poor microphone posture (tilt) on the mounting board occurred during mounting.
- the present invention has been invented to solve the above-described problems, and provides an electret condenser microphone that prevents a poor soldering in a reflow bath or a poor microphone posture on a mounting board during mounting. Objective.
- the present invention is configured as follows. That is, an electret condenser microphone in which a substrate and a component laminated on the substrate are fixed in a capsule-shaped capsule, a substrate provided with a terminal electrode pattern, a top plate having sound holes, A capsule provided with an inner flange projecting inward and a curled portion bent inward, and the base plate is placed on the inner flange so that the terminal electrode pattern protrudes outward from the inner flange and The board is placed on the curl.
- the inner collar part and the curl part may be arranged opposite to both end parts of the capsule, or the top plate may be arranged on the uppermost part of the component laminated on the substrate.
- the curled portion may be formed by caulking the end portion of the capsule, and the top plate may be disposed in contact with the curled portion.
- the terminal electrode pattern is protruded by installing the base plate on the inner collar portion of the capsule whose thickness dimension is determined.
- the terminal electrode pattern which is related to the stacking of the variation of the dimension and the processing accuracy of the curled part, can be easily and reliably projected, and the soldering in the reflow bath or the microphone posture on the mounting board during mounting Can be prevented.
- FIG. 1 is a cross-sectional view of an electret condenser microphone according to Embodiment 1 (corresponding to a cross section taken along line FF in FIG. 2C).
- FIG. 2A is a perspective view of the electret condenser microphone according to Embodiment 1 as viewed from above.
- FIG. 2B is a perspective view of the electret condenser microphone according to Embodiment 1 as viewed from below.
- 2C is a plan view of the electret condenser microphone mouthphone according to Embodiment 1.
- FIG. 3 is a cross-sectional view of an electret condenser microphone according to Embodiment 2.
- FIG. 4 is a sectional view of a conventional example.
- Embodiment 1 an embodiment of the present invention will be described with reference to FIGS. 1 to 3, the same parts as those in FIG. 4 are denoted by the same reference numerals, and the description thereof is omitted if not necessary.
- Embodiment 1 the same parts as those in FIG. 4 are denoted by the same reference numerals, and the description thereof is omitted if not necessary.
- FIG. 1 is a cross-sectional view of an embodiment of the present invention
- FIG. 2 is a perspective view of an electret condenser microphone of this embodiment.
- the inner flange 21 that protrudes inward of the electret condenser microphone Molded together with 2 using a press.
- a substrate 12 is placed on the inner flange 21.
- the ground electrode pattern 14 formed on the periphery of the substrate 12 is placed on the inner flange 21.
- the terminal electrode pattern 11 is formed on the side of the substrate 12 on which the ground electrode pattern 14 is formed (that is, outside the electret condenser microphone).
- the plate thickness of the terminal electrode pattern 11 is configured to protrude from the inner flange 21.
- a conductor pattern 9 is formed on the side opposite to the side of the substrate 12 on which the ground electrode pattern 14 is formed (that is, inside the electret condenser microphone), and an electronic circuit 10 is mounted.
- the terminal electrode pattern from the surface of the substrate 12 The thickness b of 11 is about 0.20-0.25mm.
- a ⁇ b Note that if the thickness b of the terminal electrode pattern 11 is increased, the amount of protrusion increases. However, in the case of a small microphone, in order to prevent interference with other members, the amount of protrusion cannot be increased without limit. The force depending on the request of the user who uses this microphone. It is limited to.
- a gate ring 8, a back electrode holder 7, a back electrode 6, a spacer 5, a diaphragm 4, and a diaphragm ring 3 are provided above the side opposite to the substrate 12 side on which the ground electrode pattern 14 is formed.
- a top plate 30 having a sound hole 31 is placed on the diaphragm ring 3.
- the top plate 30 has the same thickness as that of the capsule 2 using, for example, the same metal material as that of the capsule 2.
- the top plate 30 is formed by bending the end of the capsule 2 (the end opposite to the inner flange 21) inward from above (that is, outside the electret condenser microphone).
- the substrate 12 and each component are fixed in the capsule 2 by being pressed by the curled portion 13.
- the microphone of the present embodiment has the curled portion 13 on the top plate 30 side having the sound hole 31 and the terminal electrode of the substrate 12 on the inner collar portion 21 side of the capsule 2.
- Pattern 11 will be provided.
- the curled portion 13 of the present embodiment can be obtained by fixing the substrate 12 and components in the capsule 2 that does not need to be performed with high precision until the height is controlled as in the prior art, and the distortion of the diaphragm 4 Therefore, it is only necessary to provide a force that takes into account the effect of stress that leads to the stress, so that the conditions for forming the curled portion 13 can be relaxed and handling of the force tool can be facilitated.
- the substrate 12 is placed directly on the inner flange 21.
- the plate thickness of the inner flange portion 21 is also determined by pressing or the like, even if the thickness of the terminal electrode pattern 11 formed on the substrate 12 varies depending on the thickness, it is accompanied by conventional component lamination.
- the amount of protrusion of the terminal electrode pattern 11 with respect to the inner flange 21 that is related to the height of the curled portion due to stacking error or force is stabilized, and an appropriate amount of protrusion can be secured easily and reliably. As a result, poor soldering in the reflow bath or poor microphone posture on the mounting board during mounting can be avoided.
- the protruding amount of the terminal electrode pattern 11 can be reduced, and the amount of stacked layers and time for that can be reduced, and the manufacturing cost can be reduced.
- FIG. 3 is a cross-sectional view showing another example of the present embodiment.
- the difference between the example shown in FIG. 3 and the example shown in FIG. 1 is that the curling portion 13 is applied to the diaphragm ring 3 except for the top plate 30, and the top plate 30 vibrates after the formation of the curled portion 13.
- the structure is prepared by bonding to the plate ring 3.
- FIGS. 1 and 3 described so far are examples of so-called back electret condenser microphones, but the present invention can also be applied to so-called front electret condenser microphones.
- the capsule 2 is described as being made of metal, but the capsule material is not limited to metal.
- the capsule 2 may be made of a synthetic resin, and the inner wall surface of the capsule 2 may be coated to ensure conductivity.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200680011883XA CN101156500B (zh) | 2005-04-19 | 2006-04-11 | 驻极体电容传声器 |
DE602006011597T DE602006011597D1 (de) | 2005-04-19 | 2006-04-11 | Elektretkondensatormikrophon |
EP06731615A EP1874087B1 (en) | 2005-04-19 | 2006-04-11 | Electret condenser microphone |
JP2007514553A JPWO2006115045A1 (ja) | 2005-04-19 | 2006-04-11 | エレクトレットコンデンサマイクロホン |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-121051 | 2005-04-19 | ||
JP2005121051 | 2005-04-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006115045A1 true WO2006115045A1 (ja) | 2006-11-02 |
Family
ID=37214670
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/307668 WO2006115045A1 (ja) | 2005-04-19 | 2006-04-11 | エレクトレットコンデンサマイクロホン |
Country Status (8)
Country | Link |
---|---|
US (1) | US20080137885A1 (ja) |
EP (1) | EP1874087B1 (ja) |
JP (1) | JPWO2006115045A1 (ja) |
KR (1) | KR20080006538A (ja) |
CN (1) | CN101156500B (ja) |
DE (1) | DE602006011597D1 (ja) |
TW (1) | TW200644696A (ja) |
WO (1) | WO2006115045A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4514565B2 (ja) * | 2004-08-31 | 2010-07-28 | 株式会社オーディオテクニカ | コンデンサマイクロホンユニット |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61184393U (ja) * | 1985-05-08 | 1986-11-17 | ||
JPH02151730A (ja) * | 1988-12-02 | 1990-06-11 | Matsushita Electric Ind Co Ltd | エレクトレットコンデンサ型振動センサ |
JPH06339192A (ja) * | 1993-05-27 | 1994-12-06 | Atsuden Kk | マイクロホンユニット |
JPH0725700U (ja) * | 1993-09-30 | 1995-05-12 | ホシデン株式会社 | エレクトレットコンデンサマイクロフォン |
JP3017118U (ja) * | 1994-12-29 | 1995-10-24 | 株式会社オーディオテクニカ | コンデンサマイクロホンユニット |
JP2001292497A (ja) * | 2000-04-07 | 2001-10-19 | Murata Mfg Co Ltd | マイクロフォン |
JP2003078997A (ja) * | 2001-09-05 | 2003-03-14 | Citizen Electronics Co Ltd | エレクトレットコンデンサマイクロフォン |
EP1395084A2 (en) | 2002-08-01 | 2004-03-03 | Sonionmicrotronic Nederland B.V. | Electret assembly for a microphone having a backplate with improved charge stability and improved humidity stability |
JP2005057645A (ja) * | 2003-08-07 | 2005-03-03 | Matsushita Electric Ind Co Ltd | エレクトレットコンデンサマイクロホン |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4871830U (ja) * | 1971-12-11 | 1973-09-08 | ||
JPS61247200A (ja) * | 1985-04-25 | 1986-11-04 | Matsushita Electric Ind Co Ltd | エレクトレツトコンデンサマイクロホン |
CN2322348Y (zh) * | 1997-12-03 | 1999-06-02 | 陈雪祥 | 驻极体电容式传声器 |
AT411513B (de) * | 2000-01-27 | 2004-01-26 | Akg Acoustics Gmbh | Elektroakustischer wandler |
JP2002101497A (ja) * | 2000-09-21 | 2002-04-05 | Matsushita Electric Ind Co Ltd | エレクトレットコンデンサマイクロホン及びその製造方法 |
JP2002142295A (ja) * | 2000-10-30 | 2002-05-17 | Star Micronics Co Ltd | コンデンサマイクロホン |
US7062058B2 (en) * | 2001-04-18 | 2006-06-13 | Sonion Nederland B.V. | Cylindrical microphone having an electret assembly in the end cover |
JP2004135223A (ja) * | 2002-10-15 | 2004-04-30 | Hosiden Corp | コンデンサマイクロホン及びその製造方法 |
JP4033830B2 (ja) * | 2002-12-03 | 2008-01-16 | ホシデン株式会社 | マイクロホン |
US7184563B2 (en) * | 2003-03-04 | 2007-02-27 | Knowles Electronics Llc. | Electret condenser microphone |
KR200332944Y1 (ko) * | 2003-07-29 | 2003-11-14 | 주식회사 비에스이 | Smd가능한 일렉트렛 콘덴서 마이크로폰 |
KR100675026B1 (ko) * | 2003-11-05 | 2007-01-29 | 주식회사 비에스이 | 메인 pcb에 콘덴서 마이크로폰을 실장하는 방법 |
-
2006
- 2006-04-11 JP JP2007514553A patent/JPWO2006115045A1/ja active Pending
- 2006-04-11 EP EP06731615A patent/EP1874087B1/en not_active Expired - Fee Related
- 2006-04-11 DE DE602006011597T patent/DE602006011597D1/de active Active
- 2006-04-11 US US11/884,858 patent/US20080137885A1/en not_active Abandoned
- 2006-04-11 KR KR1020077019716A patent/KR20080006538A/ko not_active Application Discontinuation
- 2006-04-11 WO PCT/JP2006/307668 patent/WO2006115045A1/ja active Application Filing
- 2006-04-11 CN CN200680011883XA patent/CN101156500B/zh not_active Expired - Fee Related
- 2006-04-17 TW TW095113662A patent/TW200644696A/zh not_active IP Right Cessation
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61184393U (ja) * | 1985-05-08 | 1986-11-17 | ||
JPH02151730A (ja) * | 1988-12-02 | 1990-06-11 | Matsushita Electric Ind Co Ltd | エレクトレットコンデンサ型振動センサ |
JPH06339192A (ja) * | 1993-05-27 | 1994-12-06 | Atsuden Kk | マイクロホンユニット |
JPH0725700U (ja) * | 1993-09-30 | 1995-05-12 | ホシデン株式会社 | エレクトレットコンデンサマイクロフォン |
JP3017118U (ja) * | 1994-12-29 | 1995-10-24 | 株式会社オーディオテクニカ | コンデンサマイクロホンユニット |
JP2001292497A (ja) * | 2000-04-07 | 2001-10-19 | Murata Mfg Co Ltd | マイクロフォン |
JP2003078997A (ja) * | 2001-09-05 | 2003-03-14 | Citizen Electronics Co Ltd | エレクトレットコンデンサマイクロフォン |
EP1395084A2 (en) | 2002-08-01 | 2004-03-03 | Sonionmicrotronic Nederland B.V. | Electret assembly for a microphone having a backplate with improved charge stability and improved humidity stability |
JP2005057645A (ja) * | 2003-08-07 | 2005-03-03 | Matsushita Electric Ind Co Ltd | エレクトレットコンデンサマイクロホン |
Non-Patent Citations (1)
Title |
---|
See also references of EP1874087A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1874087A4 (en) | 2008-10-22 |
CN101156500B (zh) | 2011-08-17 |
EP1874087A1 (en) | 2008-01-02 |
CN101156500A (zh) | 2008-04-02 |
TW200644696A (en) | 2006-12-16 |
DE602006011597D1 (de) | 2010-02-25 |
KR20080006538A (ko) | 2008-01-16 |
JPWO2006115045A1 (ja) | 2008-12-18 |
US20080137885A1 (en) | 2008-06-12 |
EP1874087B1 (en) | 2010-01-06 |
TWI309139B (ja) | 2009-04-21 |
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