WO2007129787A1 - Silicon condenser microphone having additional back chamber and sound hole in pcb - Google Patents
Silicon condenser microphone having additional back chamber and sound hole in pcb Download PDFInfo
- Publication number
- WO2007129787A1 WO2007129787A1 PCT/KR2006/003092 KR2006003092W WO2007129787A1 WO 2007129787 A1 WO2007129787 A1 WO 2007129787A1 KR 2006003092 W KR2006003092 W KR 2006003092W WO 2007129787 A1 WO2007129787 A1 WO 2007129787A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- case
- substrate
- chamber
- microphone
- pcb
- Prior art date
Links
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 41
- 239000010703 silicon Substances 0.000 title claims abstract description 41
- 239000000758 substrate Substances 0.000 claims abstract description 61
- 239000000853 adhesive Substances 0.000 claims abstract description 15
- 230000001070 adhesive effect Effects 0.000 claims abstract description 15
- 230000000903 blocking effect Effects 0.000 claims abstract description 3
- 238000003466 welding Methods 0.000 claims description 18
- 239000004593 Epoxy Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910000679 solder Inorganic materials 0.000 claims description 5
- 238000005476 soldering Methods 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 3
- -1 acryl Chemical group 0.000 claims description 3
- 239000006071 cream Substances 0.000 claims description 3
- 101001045744 Sus scrofa Hepatocyte nuclear factor 1-beta Proteins 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000005459 micromachining Methods 0.000 description 3
- 150000003071 polychlorinated biphenyls Chemical group 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- VTLYHLREPCPDKX-UHFFFAOYSA-N 1,2-dichloro-3-(2,3-dichlorophenyl)benzene Chemical compound ClC1=CC=CC(C=2C(=C(Cl)C=CC=2)Cl)=C1Cl VTLYHLREPCPDKX-UHFFFAOYSA-N 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 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
- 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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/006—Interconnection of transducer parts
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/003—Mems transducers or their use
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
Definitions
- the present invention relates to a condenser microphone, and more particularly to a silicon condenser microphone having an additional back chamber and a sound hole in a PCB.
- a condenser microphone widely used in a mobile communication terminal and an audio system comprises a voltage bias element, a pair of a diaphragm/ backplate for constituting a capacitor C varying according to a sound pressure, and a JFET (Junction Field Effect Transistor) for buffering an output signal.
- the conventional the condenser microphone is assembled by sequentially inserting a vibrating plate, a spacer ring, an insulation ring, a backplate and a conductive ring in a case, and finally inserting a PCB and curling an end portion of the case toward the PCB.
- a semiconductor processing technique using a micromachining is proposed as a technique for integrating a microscopic device.
- the technique also known as a MEMS (Micro Electro Mechanical System) employs a semiconductor manufacturing process, an integrated circuit technology in particular, to manufacture a microscopic sensor, an actuator and an electromechanical structure having a size in a unit of D.
- MEMS Micro Electro Mechanical System
- conventional components of the microphone such as the vibrating plate, the spacer ring, the insulation ring, the backplate and the conductive ring may be miniaturized and integrated, and may have a high performance, a multifunction, a high stability and a high reliability through a high precision microscopic process.
- Fig. 1 is a diagram exemplifying a conventional MEMS chip structure used in a silicon condenser microphone.
- a MEMS chip 10 has a structure wherein a backplate 13 is formed on a silicon wafer 14 using a MEMS technology and a vibrating plate 11 is disposed having a spacer 12 therebetween.
- the backplate 13 includes a sound hole 13a formed therein, and the MEMS chip 10 is generally manufactured by the micromachining technology and a semiconductor chip manufacturing technology.
- FIG. 2 is a lateral cross-sectional view illustrating a conventional silicon condenser microphone employing the MEMS chip.
- a conventional silicon condenser microphone 1 is assembled by mounting the MEMS chip 10 and a ASIC (application specific integrated circuit) chip 20 on a PCB 40 and inserting the same in a case 30 having a sound hole 30a formed therein.
- ASIC application specific integrated circuit
- a silicon condenser microphone comprising: a case for blocking an inflow of an external sound; a substrate including a chamber case, a MEMS chip having an additional back chamber formed by the chamber case, a ASIC chip for operating the MEMS chip, a conductive pattern for bonding to the case, and a sound hole for passing the external sound therethrough; a fixing means for fixing the case to the substrate; and an adhesive for a bonding the case and the substrate, wherein the adhesive is applied to an entirety of a bonding surface of the case and the substrate fixed by the fixing means.
- the present invention includes a chamber case for forming an additional back chamber under a MEMS chip in order to increase a back chamber space of the MEMS chip, thereby improving a sensitivity and a noise problem such as a THD (Total Harmonic Distortion).
- a THD Total Harmonic Distortion
- the microphone when a sound hole is formed in a substrate instead of a case, the microphone may be mounted on a main PCB via various methods. Therefore, a mounting space may be small.
- the case since the case is fixed to a PCB by a laser welding and bonded by an adhesive, the case is fixed during the bonding to prevent a generation of a defect, and a mechanical firmness is improved due to a high bonding strength.
- the silicon condenser microphone in accordance with the present invention is robust to the external noise, and reduces a processing cost and the manufacturing cost.
- Fig. 1 is a diagram exemplifying a conventional MEMS chip structure used in a silicon condenser microphone.
- Fig. 2 is a lateral cross-sectional view illustrating a conventional silicon condenser microphone employing a MEMS chip.
- Fig. 3 is a lateral cross-sectional view illustrating a silicon condenser microphone having an additional back chamber and a sound hole in a PCB in accordance with a first embodiment of the present invention.
- Fig. 4 is a lateral cross-sectional view illustrating a silicon condenser microphone having an additional back chamber and a sound hole in a PCB in accordance with a second embodiment of the present invention.
- Fig. 4 is a lateral cross-sectional view illustrating a silicon condenser microphone having an additional back chamber and a sound hole in a PCB in accordance with a second embodiment of the present invention.
- Fig. 5 is a diagram exemplifying an additional back chamber in a form of a square pillar in accordance with the present invention.
- Fig. 6 is a diagram exemplifying an additional back chamber in a form of a cylinder in accordance with the present invention.
- Fig. 7 is a lateral cross-sectional view illustrating an example wherein a microphone having a connection terminal formed on a component surface is mounted on a main
- Fig. 8 is a lateral cross-sectional view illustrating an example wherein a microphone is mounted on a main PCB in accordance with the second embodiment of the present invention.
- Fig. 3 is a lateral cross-sectional view illustrating a silicon condenser microphone having an additional back chamber and a sound hole in a PCB in accordance with a first embodiment of the present invention.
- Fig. 3 is a lateral cross-sectional view illustrating a silicon condenser microphone having an additional back chamber and a sound hole in a PCB in accordance with a first embodiment of the present invention.
- the silicon condenser microphone 100 having an additional back chamber 152 and a sound hole 140a in accordance with the first embodiment has a structure wherein a chamber case 150 for forming the additional back chamber 152 and an ASIC chip 120 for driving an electrical signal of a MEMS chip 110 are disposed on a PCB substrate 140 having a conductive pattern 141 and connection terminals 142 and 144, a MEMS chip 110 is disposed on the chamber case 150, and a case 130 is attached to the PCB substrate 140.
- the conductive pattern 141 and the ground connection terminal 144 are connected via a through-hole 146.
- the chamber case 150 increases a space of the back chamber of the MEMS chip 110 to improve a sensitivity and improve a noise problem such as THD (Total Harmonic Distortion), wherein a through-hole 150a for connecting a back chamber 15 formed by the MEMS chip 110 with the additional back chamber 152 is disposed on an upper surface of the chamber case 150.
- the MEMS chip 110 has a structure wherein the backplate 13 is formed on the silicon wafer 14 using the MEMS technology and the vibrating plate 11 is formed to have the spacer 12 therebetween as shown in Fig. 1.
- the chamber case 150 may have a shape of a square pillar or a cylinder, and may be manufactured using a metal or a mold resin.
- an electrical wiring is disposed on the chamber case 150 so as to transmit the electrical signal of the MEMS chip 110 to the ASIC chip 120.
- the chamber case 150 having the through-hole 150a on an upper surface thereof for forming the additional back chamber, the MEMS chip 110 attached on the through- hole 150a of the chamber case 150 to expand the back chamber, and the ASIC chip 120 are disposed on the PCB substrate 140, the conductive pattern 141 is disposed on a portion of the PCB substrate 140 that is in contact with the case 130.
- the sound hole 140a for passing through an external sound is disposed at a position wherein the chamber case 150 is mounted, a sealing pad 148 for carrying out a hole sealing of the sound hole 140a by soldering for preventing a distortion of a sound wave in a space between a main PCB (reference numeral 310 in Fig. 7) and the microphone is disposed around the sound hole 140a disposed at a lower surface of the PCB substrate 140.
- a reference numeral 148a denoted a sound hole formed by the sealing pad 148.
- the case 130 is a metal case having one surface open wherein the case 130 has the shape of the cylinder or the square pillar.
- the case 130 has an end portion in contact with the conductive pattern 141 of the PCB substrate 140 and has a closed bottom surface to prevent an inflow of the external sound as well.
- the case 130 is attached to the PCB substrate 140 by aligning the metal case 130 on the conductive pattern 141 formed on the PCB substrate 140 and then spot- welding at least two points by a laser welding or a spot welding and then sealing a contacting portion of the case 130 and the PCB substrate 140 with an adhesive 164 such as an epoxy.
- a reference numeral 162 denotes a welding point.
- the MEMS chip 110 is attached to the chamber case 150 such that the through-hole 150a of the chamber case 150 is positioned inside the back chamber 15 of the MEMS chip 110.
- the case 130 having the shape of the cylinder or the square pillar is fixed to the conductive pattern 141 of the PCB substrate 140 by the laser welding.
- the case 130 is bonded to the PCB substrate 140 by the adhesive 164.
- the adhesive 164 may be a conductive epoxy, a non-conductive epoxy, a silver paste, a silicon, a urethane, an acryl and a cream solder.
- the MEMS chip 110 having the additional back chamber 152 formed by the chamber case 150 and the ASIC chip 120 are mounted on the PCB substrate 140, and the square or circular conductive pattern 141 is disposed at a portion that is in contact with the case 130 having the shape of the cylinder or the square pillar.
- a connection pad or the connection terminal for connecting to an external device may be freely disposed on the large PCB substrate, and the conductive pattern 141 may be manufactured by disposing a copper film via a conventional PCB manufacturing process and then plating a nickel or a gold.
- a ceramic substrate, a FPCB substrate or a metal PCB may be used instead of the PCB substrate 140.
- the case 130 having the shape of the cylinder or the square pillar has a contacting surface with the PCB substrate 140 open such that chip components may be housed inside, wherein an upper surface thereof is closed the external sound does not flows in.
- the case 130 may be manufactured using a brass, a copper, a stainless steel, an aluminum or a nickel alloy and may be plated with gold or silver.
- a welding point 162 which is a portion of the contacting portion is welded with the laser using a laser welder (not shown) to fix the case 130 to the PCB substrate 140.
- an assembly of the microphone is complete by applying the adhesive 164 to the entire contacting portion.
- the welding refers to spot- welding one or more points (preferably two or four points) in order to fix the case 130 to the PCB substrate 140 rather than welding an entire contacting surface of the case 130 and the PCB substrate 140.
- a bonding point formed between the case 130 and the PCB substrate 140 through such welding is referred to as the welding point 162.
- the case 130 is fixed to the PCB substrate 140 by the welding point 162 such that the case 130 is not moved during a bonding using the adhesive 164 or a curing process for bonding at a proper position.
- the conductive pattern 141 is connected to the ground connection terminal 144 through the through-hole 146, and when the case 130 is bonded, an external noise is blocked to remove the noise.
- connection terminals 142 and 144 for connecting to the external device may be formed at a bottom surface of the PCB substrate 140, and each of the connection terminals 142 and 144 is electrically connected to a chip component side through the through-hole.
- the connection terminals 142 and 144 extend about the PCB substrate 140, the rework may be facilitated by using an electric solder through an exposed surface.
- the laser welding is exemplified as a method for fixing the case 130 to the PCB substrate 140
- a soldering or a punching may be used for fixing the case 130 to the PCB substrate 140
- the conductive epoxy, the non-conductive epoxy, the silver paste, the silicon, the urethane, the acryl or the cream solder may be used as the adhesive 164.
- FIG. 4 is a lateral cross-sectional view illustrating a silicon condenser microphone having an additional back chamber and a sound hole in a PCB in accordance with a second embodiment of the present invention.
- a difference between the silicon condenser microphone 100 of the first embodiment and the silicon condenser microphone 100' of the second embodiment is a position of the sound hole 140a formed in the PCB substrate 140, wherein the sound hole 140a is formed at a position of the additional back chamber 152 formed by the chamber case 150 in case of the first embodiment and the sound hole 140a is formed between the chamber case 150 and the ASIC chip 120 away from the chamber case 150 in case of the second embodiment.
- the silicon condenser microphone 100 of the first embodiment has a back type structure wherein the external sound passes through the sound hole 140a of the PCB substrate 140 to reach the additional back chamber 152
- the silicon condenser microphone 100' of the second embodiment has a structure wherein the external sound passes through the sound hole 140a of the PCB substrate 140 and then passes through a space in the case 130 to reach the MEMS chip 110.
- Fig. 5 is a diagram exemplifying an additional back chamber in the form of the square pillar in accordance with the present invention
- Fig. 6 is a diagram exemplifying an additional back chamber in the form of the cylinder in accordance with the present invention.
- the chamber case 150 for forming the additional back chamber 152 may have the shape of the square pillar 150' and the cylinder 150", and the through-hole 150a is disposed on an upper portion of the square pillar 150' or the cylinder 150" to form a path with the back chamber 15 of the MEMS chip 110.
- the silicon condenser microphone 100 having various shapes may be manufactured by attaching the case 130 having various shapes on the PCB substrate 140.
- the ASIC chip 120 and the MEMS chip 110 are mounted on the PCB substrate 140.
- the MEMS chip 110 includes the additional back chamber 152 by the chamber case 150.
- the case may have the shape of the cylinder, the square pillar, a cylinder having a wing at an end thereof, or a square pillar having a wing at an end thereof.
- Fig. 7 is a lateral cross-sectional view illustrating an example wherein a microphone having a connection terminal formed on a component surface is mounted on a main PCB in accordance with the first embodiment of the present invention.
- connection terminals 142 and 144 for connecting to a connection pad 320 of the main PCB 310 of a product on which the microphone is mounted are disposed in the component side of the PCB substrate 140. At least two and up to eight connection terminals may be formed.
- the reference numeral 162 denotes the welding point.
- the main PCB 310 of the product on which the silicon condenser microphone is mounted comprises a circular or a square inserting hole 310a in order to mount the case 130 of the silicon condenser microphone.
- the connection pad 320 corresponding to the connection terminals 142 and 144 disposed on the PCB substrate 140 of the microphone are disposed.
- connection pad 320 of the main PCB 310 is coupled to the connection terminals 142 and 144 by a soldering 330 as well as the case 130 extruding at a center of the component side of the substrate 140 is inserted the inserting hole 310a of the main PCB 310.
- Fig. 8 is a lateral cross-sectional view illustrating an example wherein a microphone is mounted on a main PCB in accordance with the second embodiment of the present invention.
- the silicon condenser microphone in accordance with the second embodiment of the present invention has a constitution identical to that of Fig. 4, and a main PCB 300 for mounting the silicon condenser microphone of the second embodiment comprises a sound hole 300a for passing through a sound form an external source, a sealing pad 302 disposed around the sound hole 300a, and a connection pad 304 corresponding to the connection terminals 142 and 144 of the microphone as shown in Fig. 8.
- the present invention includes a chamber case for forming an additional back chamber under a MEMS chip in order to increase a back chamber space of the MEMS chip, thereby improving a sensitivity and a noise problem such as a THD (Total Harmonic Distortion).
- a THD Total Harmonic Distortion
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Pressure Sensors (AREA)
- Micromachines (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/919,688 US7949142B2 (en) | 2006-05-09 | 2006-08-07 | Silicon condenser microphone having additional back chamber and sound hole in PCB |
EP06783527.2A EP1875773B1 (en) | 2006-05-09 | 2006-08-07 | Silicon condenser microphone having additional back chamber and sound hole in pcb |
JP2008514567A JP2008533950A (en) | 2006-05-09 | 2006-08-07 | Silicon condenser microphone with an additional back chamber and acoustic holes formed in the substrate |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2006-0041660 | 2006-05-09 | ||
KR1020060041660A KR100722686B1 (en) | 2006-05-09 | 2006-05-09 | Silicon condenser microphone having additional back chamber and sound hole in pcb |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007129787A1 true WO2007129787A1 (en) | 2007-11-15 |
Family
ID=38278475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2006/003092 WO2007129787A1 (en) | 2006-05-09 | 2006-08-07 | Silicon condenser microphone having additional back chamber and sound hole in pcb |
Country Status (6)
Country | Link |
---|---|
US (2) | US7949142B2 (en) |
EP (1) | EP1875773B1 (en) |
JP (1) | JP2008533950A (en) |
KR (1) | KR100722686B1 (en) |
CN (1) | CN201182009Y (en) |
WO (1) | WO2007129787A1 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010051707A1 (en) * | 2008-11-07 | 2010-05-14 | 歌尔声学股份有限公司 | Silicon microphone |
US20110198714A1 (en) * | 2010-02-18 | 2011-08-18 | Analog Devices, Inc. | Packages and methods for packaging mems microphone devices |
US20110266641A1 (en) * | 2009-10-19 | 2011-11-03 | Bse Co., Ltd. | Silicon condenser microphone having an additional back chamber and a fabrication method therefor |
CN102457789A (en) * | 2010-10-19 | 2012-05-16 | 宝星电子股份有限公司 | Surface-mount microphone |
US8447057B2 (en) | 2011-03-18 | 2013-05-21 | Analog Devices, Inc. | Packages and methods for packaging MEMS microphone devices |
US8625832B2 (en) | 2011-04-04 | 2014-01-07 | Invensense, Inc. | Packages and methods for packaging microphone devices |
US8779535B2 (en) | 2012-03-14 | 2014-07-15 | Analog Devices, Inc. | Packaged integrated device die between an external and internal housing |
US8861312B2 (en) | 2007-03-14 | 2014-10-14 | Qualcomm Incorporated | MEMS microphone |
US9661408B2 (en) | 2012-10-26 | 2017-05-23 | Analog Devices, Inc. | Packages and methods for packaging |
DE102017128956A1 (en) * | 2017-12-06 | 2019-06-06 | Peiker Acustic Gmbh & Co Kg | Microphone assembly and method of making a microphone assembly |
US10730743B2 (en) | 2017-11-06 | 2020-08-04 | Analog Devices Global Unlimited Company | Gas sensor packages |
US11587839B2 (en) | 2019-06-27 | 2023-02-21 | Analog Devices, Inc. | Device with chemical reaction chamber |
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WO2008134530A2 (en) | 2007-04-25 | 2008-11-06 | University Of Florida Research Foundation, Inc. | A capacitive microphone with integrated cavity |
KR200448302Y1 (en) | 2007-05-26 | 2010-03-30 | 고어텍 인크 | Silicon condenser microphone |
KR100904285B1 (en) * | 2007-06-04 | 2009-06-25 | 주식회사 비에스이 | Condenser microphone |
KR101008399B1 (en) * | 2007-09-03 | 2011-01-14 | 주식회사 비에스이 | Condenser microphone using the ceramic package whose inside is encompassed by metal or conductive materials |
KR100982239B1 (en) * | 2007-11-02 | 2010-09-14 | 주식회사 비에스이 | Mems microphone package |
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JP5668664B2 (en) * | 2011-10-12 | 2015-02-12 | 船井電機株式会社 | MICROPHONE DEVICE, ELECTRONIC DEVICE EQUIPPED WITH MICROPHONE DEVICE, MICROPHONE DEVICE MANUFACTURING METHOD, MICROPHONE DEVICE SUBSTRATE, AND MICROPHONE DEVICE SUBSTRATE MANUFACTURING METHOD |
JP2013090142A (en) * | 2011-10-18 | 2013-05-13 | Hosiden Corp | Electret capacitor microphone |
US9485560B2 (en) | 2012-02-01 | 2016-11-01 | Knowles Electronics, Llc | Embedded circuit in a MEMS device |
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US8940742B2 (en) | 2012-04-10 | 2015-01-27 | Infinity Pharmaceuticals, Inc. | Heterocyclic compounds and uses thereof |
US9402118B2 (en) | 2012-07-27 | 2016-07-26 | Knowles Electronics, Llc | Housing and method to control solder creep on housing |
US9491539B2 (en) | 2012-08-01 | 2016-11-08 | Knowles Electronics, Llc | MEMS apparatus disposed on assembly lid |
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Also Published As
Publication number | Publication date |
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EP1875773B1 (en) | 2013-10-02 |
KR100722686B1 (en) | 2007-05-30 |
US7949142B2 (en) | 2011-05-24 |
US7953235B2 (en) | 2011-05-31 |
JP2008533950A (en) | 2008-08-21 |
CN201182009Y (en) | 2009-01-14 |
US20090092274A1 (en) | 2009-04-09 |
US20100046780A1 (en) | 2010-02-25 |
EP1875773A4 (en) | 2011-01-12 |
EP1875773A1 (en) | 2008-01-09 |
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