KR900019277A - 압전변환장치 및 발음장치 - Google Patents

압전변환장치 및 발음장치 Download PDF

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Publication number
KR900019277A
KR900019277A KR1019900008053A KR900008053A KR900019277A KR 900019277 A KR900019277 A KR 900019277A KR 1019900008053 A KR1019900008053 A KR 1019900008053A KR 900008053 A KR900008053 A KR 900008053A KR 900019277 A KR900019277 A KR 900019277A
Authority
KR
South Korea
Prior art keywords
liquid crystal
crystal panel
bending rigidity
substrate
substrates
Prior art date
Application number
KR1019900008053A
Other languages
English (en)
Other versions
KR930009597B1 (ko
Inventor
마사노리 후지다
신이찌 오까모도
히로가즈 오오노
Original Assignee
요꼬야마 유우이찌
가부시끼가이샤 세이꼬오샤
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
Priority claimed from JP1138516A external-priority patent/JPH034700A/ja
Priority claimed from JP1152523A external-priority patent/JP2508274B2/ja
Application filed by 요꼬야마 유우이찌, 가부시끼가이샤 세이꼬오샤 filed Critical 요꼬야마 유우이찌
Publication of KR900019277A publication Critical patent/KR900019277A/ko
Application granted granted Critical
Publication of KR930009597B1 publication Critical patent/KR930009597B1/ko

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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
    • 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/122—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using piezoelectric driving means
    • 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
    • H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
    • H04R17/08—Gramophone pick-ups using a stylus; Recorders using a stylus signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Mechanical Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Liquid Crystal (AREA)

Abstract

내용 없음

Description

압전변환장치 및 발음장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 압전변환장치의 일실시예를 도시하는 개략구성도, 제2도(a), (b)는 본 발명(실시예)와 종래예(비교예)의 압전변환장치를 진동시킬때에 생기는 표면변위특성을 도시하는 도면, 제3도는 본 발명의 발음장치의 일실시예를 도시하는 사시도.

Claims (6)

  1. 서로 대항하는 내면에 전극과 배향층이 설치되어 있는 2매의 기판과 상기 양기판사이에 봉지하여 있는 강유전성액정으로 이루어지는 강유전성액정패널을 포함하고 상기 양기판의 한쪽의 휘임강성을 다른쪽의 그것보다도 작게한 것을 특징으로 하는 압전변환장치.
  2. 제1항에 있어서 두께를 변경함으로써 상기기판의 한쪽의 휘임강성을 다른쪽의 그것보다도 작게한 것을 특징으로 하는 압전변환장치.
  3. 제1항에 있어서 재질을 변경함으로써 상기 양기판의 한쪽의 휘임강성을 다른쪽의 그것보다도 적게한 것을 특징으로 하는 압전 변환장치.
  4. 상기 액정패널의 진동에 대하여 공명계를 구성하는 공간을 생기게하는 음향반사판이 상기액정패널에 대하여 실질적으로 평행하게 고정되어 있는 것을 특징으로 하는 제1항 내지 3항중 한항에 따른 압전변환장치를 이용한 발음장치.
  5. 제4항에 있어서 상기 음향반사판의 거의 전둘레부로부터 음향이 방사되도록한 것을 특징으로 하는 발음장치.
  6. 상기기판에 부여된 왜곡에 대응하여 상기 전극간에 생기는 전내를 검출하는 전압검출 수단을 구비하는 것을 특징으로하는 제1항 내지 3항중 한항에 따른 압전변환장치를 이용한 기계전기 변환장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900008053A 1989-05-31 1990-05-31 압전변환장치 및 이를 이용한 발음장치와 기계전기 변환장치 KR930009597B1 (ko)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP1138516A JPH034700A (ja) 1989-05-31 1989-05-31 発音装置
JP1-138516 1989-05-31
JP1-152523 1989-06-15
JP1152523A JP2508274B2 (ja) 1989-06-15 1989-06-15 圧電変換装置

Publications (2)

Publication Number Publication Date
KR900019277A true KR900019277A (ko) 1990-12-24
KR930009597B1 KR930009597B1 (ko) 1993-10-07

Family

ID=26471523

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900008053A KR930009597B1 (ko) 1989-05-31 1990-05-31 압전변환장치 및 이를 이용한 발음장치와 기계전기 변환장치

Country Status (4)

Country Link
US (1) US5105116A (ko)
KR (1) KR930009597B1 (ko)
DE (1) DE4017276A1 (ko)
GB (1) GB2234110B (ko)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW240240B (ko) * 1992-03-27 1995-02-11 Philips Nv
EP2275175B1 (en) * 2000-07-13 2016-08-24 ReCor Medical, Inc. Thermal treatment apparatus with ultrasonic energy application
EP2455015B1 (en) * 2000-07-13 2017-09-13 ReCor Medical, Inc. Ultrasonic energy application with inflatable lens
US6763722B2 (en) * 2001-07-13 2004-07-20 Transurgical, Inc. Ultrasonic transducers
US20040082859A1 (en) 2002-07-01 2004-04-29 Alan Schaer Method and apparatus employing ultrasound energy to treat body sphincters
EP1596746B1 (en) * 2003-02-20 2016-10-19 ReCor Medical, Inc. Ultrasonic ablation devices
WO2007136566A2 (en) 2006-05-19 2007-11-29 Prorhythm, Inc. Ablation device with optimized input power profile and method of using the same
US20090142579A1 (en) * 2007-11-30 2009-06-04 Honeywell International, Inc. High security window film with sensing capability
EP2376011B1 (en) 2009-01-09 2019-07-03 ReCor Medical, Inc. Apparatus for treatment of mitral valve insufficiency
KR101324658B1 (ko) * 2009-05-11 2013-11-04 주식회사 아이브이웍스 반사 방식의 디스플레이 및 그 제조 방법
WO2012026319A1 (ja) * 2010-08-24 2012-03-01 株式会社村田製作所 超音波発生装置
WO2016094582A1 (en) * 2014-12-10 2016-06-16 Epstein Jacob H Safe, wireless, integrated audio device for helmets
FR3061568B1 (fr) * 2017-01-04 2021-09-10 Hap2U Dalle tactile vibrante

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1299724B (de) * 1966-10-21 1969-07-24 Siemens Ag Mikrophonkapsel mit einem piezoelektrischen Wandlerelement und einem Transistorverstaerker
US3761956A (en) * 1970-10-01 1973-09-25 Nittan Co Ltd Sound generating device
US3970879A (en) * 1971-12-29 1976-07-20 Sumitomo Electric Industries, Ltd. Piezoelectric acoustic device
DE3230060C2 (de) * 1981-07-31 1986-07-31 Sumitomo Electric Industries, Ltd., Osaka Piezoelektrischer Summer
JP2530432B2 (ja) * 1986-07-22 1996-09-04 キヤノン株式会社 液晶素子
JPS63204313A (ja) * 1987-02-19 1988-08-24 Semiconductor Energy Lab Co Ltd 圧力感知装置
JP2709318B2 (ja) * 1988-08-31 1998-02-04 セイコープレシジョン株式会社 液晶パネルおよび液晶パネルを用いた変換装置

Also Published As

Publication number Publication date
KR930009597B1 (ko) 1993-10-07
GB9011337D0 (en) 1990-07-11
DE4017276C2 (ko) 1992-12-24
GB2234110B (en) 1993-04-21
DE4017276A1 (de) 1990-12-06
GB2234110A (en) 1991-01-23
US5105116A (en) 1992-04-14

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