FR2882488B1 - Element ultrasonique - Google Patents

Element ultrasonique

Info

Publication number
FR2882488B1
FR2882488B1 FR0601480A FR0601480A FR2882488B1 FR 2882488 B1 FR2882488 B1 FR 2882488B1 FR 0601480 A FR0601480 A FR 0601480A FR 0601480 A FR0601480 A FR 0601480A FR 2882488 B1 FR2882488 B1 FR 2882488B1
Authority
FR
France
Prior art keywords
membrane
vibrator
ultrasonic element
ultrasonic
zone
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 - Fee Related
Application number
FR0601480A
Other languages
English (en)
Other versions
FR2882488A1 (fr
Inventor
Makiko Sugiura
Tomoki Itoh
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.)
Denso Corp
Original Assignee
Denso 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 Denso Corp filed Critical Denso Corp
Publication of FR2882488A1 publication Critical patent/FR2882488A1/fr
Application granted granted Critical
Publication of FR2882488B1 publication Critical patent/FR2882488B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/58—Multiple crystal filters
    • H03H9/582—Multiple crystal filters implemented with thin-film techniques
    • H03H9/586—Means for mounting to a substrate, i.e. means constituting the material interface confining the waves to a volume
    • H03H9/588—Membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0688—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction with foil-type piezoelectric elements, e.g. PVDF
    • B06B1/0692—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction with foil-type piezoelectric elements, e.g. PVDF with a continuous electrode on one side and a plurality of electrodes on the other side
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • H03H3/02—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02007—Details of bulk acoustic wave devices
    • H03H9/02086—Means for compensation or elimination of undesirable effects
    • H03H9/02133—Means for compensation or elimination of undesirable effects of stress
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
    • H03H9/171—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator implemented with thin-film techniques, i.e. of the film bulk acoustic resonator [FBAR] type
    • H03H9/172—Means for mounting on a substrate, i.e. means constituting the material interface confining the waves to a volume
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/56—Monolithic crystal filters
    • H03H9/564—Monolithic crystal filters implemented with thin-film techniques
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/58—Multiple crystal filters
    • H03H9/582—Multiple crystal filters implemented with thin-film techniques
    • H03H9/583—Multiple crystal filters implemented with thin-film techniques comprising a plurality of piezoelectric layers acoustically coupled

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Micromachines (AREA)

Abstract

L'invention concerne un élément ultrasonique comprenant une membrane (M) formée d'une partie à paroi mince sur un substrat (10), un vibreur piézoélectrique (21) recouvrant la membrane et comprenant un film piézoélectrique mince (2) enserré entre des films d'électrodes métalliques (3a,3b), le vibreur fonctionnant avec la membrane (M) à une fréquence prédéterminée dans la bande d'ondes des ultrasons, une configuration évidée (2a) formée partiellement dans le film pour diviser le vibreur en parties multiples qui sont formées dans une zone correspondant à une zone de contrainte concentrée apparaissant lors de vibrations de la membrane (M) dans des directions diamétrales de cette dernière.Application notamment à des détecteurs d'obstacles dans le domaine de l'automobile.
FR0601480A 2005-02-21 2006-02-20 Element ultrasonique Expired - Fee Related FR2882488B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005044805A JP4622574B2 (ja) 2005-02-21 2005-02-21 超音波素子

Publications (2)

Publication Number Publication Date
FR2882488A1 FR2882488A1 (fr) 2006-08-25
FR2882488B1 true FR2882488B1 (fr) 2015-06-05

Family

ID=36794328

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0601480A Expired - Fee Related FR2882488B1 (fr) 2005-02-21 2006-02-20 Element ultrasonique

Country Status (4)

Country Link
US (1) US7466064B2 (fr)
JP (1) JP4622574B2 (fr)
DE (1) DE102006007494A1 (fr)
FR (1) FR2882488B1 (fr)

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US7730785B2 (en) * 2006-04-26 2010-06-08 Denso Corporation Ultrasonic sensor and manufacture method of the same
JP4328981B2 (ja) * 2007-01-25 2009-09-09 セイコーエプソン株式会社 圧電振動子の製造方法
US8080920B2 (en) * 2007-03-21 2011-12-20 The University Of Vermont And State Agricultural College Piezoelectric vibrational energy harvesting systems incorporating parametric bending mode energy harvesting
JP2009164849A (ja) * 2007-12-28 2009-07-23 Yamaha Corp Ｍｅｍｓトランスデューサおよびその製造方法
US10170685B2 (en) 2008-06-30 2019-01-01 The Regents Of The University Of Michigan Piezoelectric MEMS microphone
CN104602170B (zh) 2008-06-30 2019-08-13 密歇根大学董事会 压电mems麦克风
US8345895B2 (en) 2008-07-25 2013-01-01 United Microelectronics Corp. Diaphragm of MEMS electroacoustic transducer
JP5434109B2 (ja) 2009-02-06 2014-03-05 セイコーエプソン株式会社 超音波センサーユニット
JP5754129B2 (ja) 2010-03-11 2015-07-29 セイコーエプソン株式会社 圧電素子、圧電センサー、電子機器、および圧電素子の製造方法
US8492957B2 (en) * 2010-03-23 2013-07-23 Kohji Toda Apparatus for generating electric energy
JP2013539254A (ja) * 2010-07-30 2013-10-17 コーニンクレッカ フィリップス エヌ ヴェ 薄膜超音波振動子
US9000656B2 (en) * 2011-03-15 2015-04-07 Qualcomm Mems Technologies, Inc. Microelectromechanical system device including a metal proof mass and a piezoelectric component
JP5834657B2 (ja) 2011-09-12 2015-12-24 セイコーエプソン株式会社 超音波プローブおよび超音波画像診断装置
JP5516548B2 (ja) 2011-11-01 2014-06-11 株式会社デンソー 把持用センサ及びロボットハンド駆動制御装置
DE102012204638A1 (de) * 2012-03-22 2013-09-26 Robert Bosch Gmbh Ultraschallsensor und Verfahren zur Messung eines Objektabstands
KR101383012B1 (ko) * 2012-05-31 2014-04-07 한국과학기술연구원 스퀴즈막 효과를 이용한 촉감 디스플레이를 구비한 전자 장치
DE102013205157A1 (de) * 2013-03-22 2014-10-09 Robert Bosch Gmbh Sensoranordnung und Verfahren zur Umfelderfassung eines Fahrzeugs
KR101512316B1 (ko) * 2013-07-11 2015-04-16 인하대학교 산학협력단 지향성 음향센서 및 이의 제조방법
US20200322731A1 (en) * 2013-10-17 2020-10-08 Merry Electronics(Shenzhen) Co., Ltd. Acoustic transducer
US20150162523A1 (en) * 2013-12-06 2015-06-11 Murata Manufacturing Co., Ltd. Piezoelectric device
JP6519212B2 (ja) * 2014-03-27 2019-05-29 セイコーエプソン株式会社 圧電素子、圧電デバイスおよびプローブ並びに電子機器および超音波画像装置
WO2016054447A1 (fr) * 2014-10-02 2016-04-07 Chirp Microsystems Transducteurs ultrasoniques micro-usinés ayant une structure de membrane à fentes
KR101641948B1 (ko) * 2015-01-28 2016-07-25 세메스 주식회사 기판 처리 장치 및 처리액 노즐
US9862592B2 (en) * 2015-03-13 2018-01-09 Taiwan Semiconductor Manufacturing Co., Ltd. MEMS transducer and method for manufacturing the same
CN107530006A (zh) * 2015-04-17 2018-01-02 太阳诱电株式会社 振动波形传感器和波形分析装置
JP2017199892A (ja) 2016-02-17 2017-11-02 株式会社リコー 電気−機械変換素子とその製造方法、電気−機械変換素子を備えた液体吐出ヘッドおよび液体吐出装置
WO2017218299A1 (fr) * 2016-06-17 2017-12-21 Chirp Microsystems, Inc. Transducteurs à ultrasons micro-usinés piézoélectriques ayant des caractéristiques de soulagement des contraintes
JP6538007B2 (ja) * 2016-06-29 2019-07-03 太陽誘電株式会社 弾性波デバイス
JP6907539B2 (ja) * 2017-01-06 2021-07-21 セイコーエプソン株式会社 超音波デバイス、超音波プローブ、及び超音波装置
CN106895863B (zh) * 2017-01-13 2020-11-06 业成科技（成都）有限公司 超声波传感器及使用该超声波传感器的电子装置
EP3676025A4 (fr) * 2017-11-16 2021-04-07 Chirp Microsystems, Inc. Transducteur ultrasonore micro-usiné piézoélectrique avec une structure de membrane à motifs
JP7205191B2 (ja) * 2018-11-22 2023-01-17 セイコーエプソン株式会社 超音波センサー、及び電子機器
US11899143B2 (en) 2021-07-12 2024-02-13 Robert Bosch Gmbh Ultrasound sensor array for parking assist systems
US20230009789A1 (en) * 2021-07-12 2023-01-12 Robert Bosch Gmbh Ultrasound transducer with distributed cantilevers
US20230270011A1 (en) * 2022-02-24 2023-08-24 Qualcomm Technologies, Inc. Piezoelectric micromachined ultrasonic transducer (pmut) design
CN118140403A (zh) * 2022-05-19 2024-06-04 深圳市韶音科技有限公司 压电换能器、声学输出设备以及传声设备

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Also Published As

Publication number Publication date
FR2882488A1 (fr) 2006-08-25
JP4622574B2 (ja) 2011-02-02
US20060186762A1 (en) 2006-08-24
JP2006229901A (ja) 2006-08-31
DE102006007494A1 (de) 2006-08-31
US7466064B2 (en) 2008-12-16

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Legal Events

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Year of fee payment: 10

PLFP Fee payment

Year of fee payment: 11

ST Notification of lapse

Effective date: 20171031