CN114222231A - 基于固支梁结构的双晶压电式mems麦克风 - Google Patents
基于固支梁结构的双晶压电式mems麦克风 Download PDFInfo
- Publication number
- CN114222231A CN114222231A CN202111505684.7A CN202111505684A CN114222231A CN 114222231 A CN114222231 A CN 114222231A CN 202111505684 A CN202111505684 A CN 202111505684A CN 114222231 A CN114222231 A CN 114222231A
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- Prior art keywords
- clamped beam
- piezoelectric
- electrode
- clamped
- layer
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- 239000000758 substrate Substances 0.000 claims abstract description 11
- 230000007935 neutral effect Effects 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical group O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 2
- 229910052681 coesite Inorganic materials 0.000 claims description 2
- 229910052906 cristobalite Inorganic materials 0.000 claims description 2
- 239000010445 mica Substances 0.000 claims description 2
- 229910052618 mica group Inorganic materials 0.000 claims description 2
- 229910052682 stishovite Inorganic materials 0.000 claims description 2
- 229910052905 tridymite Inorganic materials 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 15
- 238000013461 design Methods 0.000 abstract description 9
- 239000012528 membrane Substances 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/02—Microphones
- H04R17/025—Microphones using a piezoelectric polymer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
- H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
Description
Claims (8)
Priority Applications (1)
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CN202111505684.7A CN114222231B (zh) | 2021-12-10 | 2021-12-10 | 基于固支梁结构的双晶压电式mems麦克风 |
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CN202111505684.7A CN114222231B (zh) | 2021-12-10 | 2021-12-10 | 基于固支梁结构的双晶压电式mems麦克风 |
Publications (2)
Publication Number | Publication Date |
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CN114222231A true CN114222231A (zh) | 2022-03-22 |
CN114222231B CN114222231B (zh) | 2023-12-29 |
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CN202111505684.7A Active CN114222231B (zh) | 2021-12-10 | 2021-12-10 | 基于固支梁结构的双晶压电式mems麦克风 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117729500A (zh) * | 2024-02-08 | 2024-03-19 | 成都纤声科技有限公司 | 一种声学压电结构、声学传感器和电子设备 |
Citations (10)
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CN107812691A (zh) * | 2017-09-28 | 2018-03-20 | 瑞声科技(新加坡)有限公司 | 压电超声换能器及其制备方法 |
CN108347197A (zh) * | 2018-04-26 | 2018-07-31 | 南京邮电大学 | 双晶串联式固支梁压电能量收集器 |
CN209345038U (zh) * | 2019-03-20 | 2019-09-03 | 南京邮电大学 | 一种双晶混联式固支梁压电能量收集器 |
CN209345036U (zh) * | 2019-03-20 | 2019-09-03 | 南京邮电大学 | 一种双晶并联式固支梁压电能量收集器 |
CN111050256A (zh) * | 2019-12-17 | 2020-04-21 | 武汉大学 | 一种小型化的高灵敏度压电式麦克风 |
CN111328005A (zh) * | 2020-03-10 | 2020-06-23 | 瑞声声学科技(深圳)有限公司 | 压电式mems麦克风 |
CN111337119A (zh) * | 2020-01-10 | 2020-06-26 | 武汉大学 | 一种高灵敏度的振动传感器 |
CN211744726U (zh) * | 2019-12-31 | 2020-10-23 | 瑞声科技(新加坡)有限公司 | 一种mems扬声器 |
CN112601169A (zh) * | 2020-12-15 | 2021-04-02 | 武汉大学 | 一种宽频带高灵敏度谐振式压电mems麦克风 |
CN113613151A (zh) * | 2021-07-30 | 2021-11-05 | 歌尔微电子股份有限公司 | 微机电系统麦克风、麦克风单体及电子设备 |
-
2021
- 2021-12-10 CN CN202111505684.7A patent/CN114222231B/zh active Active
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107812691A (zh) * | 2017-09-28 | 2018-03-20 | 瑞声科技(新加坡)有限公司 | 压电超声换能器及其制备方法 |
CN108347197A (zh) * | 2018-04-26 | 2018-07-31 | 南京邮电大学 | 双晶串联式固支梁压电能量收集器 |
CN209345038U (zh) * | 2019-03-20 | 2019-09-03 | 南京邮电大学 | 一种双晶混联式固支梁压电能量收集器 |
CN209345036U (zh) * | 2019-03-20 | 2019-09-03 | 南京邮电大学 | 一种双晶并联式固支梁压电能量收集器 |
CN111050256A (zh) * | 2019-12-17 | 2020-04-21 | 武汉大学 | 一种小型化的高灵敏度压电式麦克风 |
CN211744726U (zh) * | 2019-12-31 | 2020-10-23 | 瑞声科技(新加坡)有限公司 | 一种mems扬声器 |
CN111337119A (zh) * | 2020-01-10 | 2020-06-26 | 武汉大学 | 一种高灵敏度的振动传感器 |
CN111328005A (zh) * | 2020-03-10 | 2020-06-23 | 瑞声声学科技(深圳)有限公司 | 压电式mems麦克风 |
CN112601169A (zh) * | 2020-12-15 | 2021-04-02 | 武汉大学 | 一种宽频带高灵敏度谐振式压电mems麦克风 |
CN113613151A (zh) * | 2021-07-30 | 2021-11-05 | 歌尔微电子股份有限公司 | 微机电系统麦克风、麦克风单体及电子设备 |
Non-Patent Citations (2)
Title |
---|
张慧;赵晓楠;张雯;曾周末;: "空气耦合式电容微超声换能器的设计与分析", 仪器仪表学报, no. 10 * |
王军龙;鲍丙豪;闻凤连;龚勇镇;: "双晶压电悬臂梁发电装置的建模与有限元仿真分析", 机械设计与制造, no. 09 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117729500A (zh) * | 2024-02-08 | 2024-03-19 | 成都纤声科技有限公司 | 一种声学压电结构、声学传感器和电子设备 |
CN117729500B (zh) * | 2024-02-08 | 2024-04-30 | 成都纤声科技有限公司 | 一种声学压电结构、声学传感器和电子设备 |
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CN114222231B (zh) | 2023-12-29 |
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