KR100303635B1 - 압전공진자및그의주파수조정방법 - Google Patents
압전공진자및그의주파수조정방법 Download PDFInfo
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- KR100303635B1 KR100303635B1 KR1019980027238A KR19980027238A KR100303635B1 KR 100303635 B1 KR100303635 B1 KR 100303635B1 KR 1019980027238 A KR1019980027238 A KR 1019980027238A KR 19980027238 A KR19980027238 A KR 19980027238A KR 100303635 B1 KR100303635 B1 KR 100303635B1
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- base member
- piezoelectric resonator
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- piezoelectric
- cutting
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- 238000000034 method Methods 0.000 title claims description 12
- 238000005520 cutting process Methods 0.000 claims abstract description 59
- 239000000758 substrate Substances 0.000 description 18
- 239000012212 insulator Substances 0.000 description 12
- 230000005684 electric field Effects 0.000 description 10
- 230000010287 polarization Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/02—Details
- H03H9/05—Holders or supports
- H03H9/10—Mounting in enclosures
- H03H9/1007—Mounting in enclosures for bulk acoustic wave [BAW] devices
- H03H9/1014—Mounting in enclosures for bulk acoustic wave [BAW] devices the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the BAW device
-
- 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
- H03H3/04—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 for obtaining desired frequency or temperature coefficient
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; 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
- H03H9/178—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator of a laminated structure of multiple piezoelectric layers with inner electrodes
-
- 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
- H03H3/04—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 for obtaining desired frequency or temperature coefficient
- H03H2003/0414—Resonance frequency
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02543—Characteristics of substrate, e.g. cutting angles
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02543—Characteristics of substrate, e.g. cutting angles
- H03H9/02574—Characteristics of substrate, e.g. cutting angles of combined substrates, multilayered substrates, piezoelectrical layers on not-piezoelectrical substrate
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/02—Details
- H03H9/05—Holders or supports
- H03H9/10—Mounting in enclosures
- H03H9/1064—Mounting in enclosures for surface acoustic wave [SAW] devices
- H03H9/1092—Mounting in enclosures for surface acoustic wave [SAW] devices the enclosure being defined by a cover cap mounted on an element forming part of the surface acoustic wave [SAW] device on the side of the IDT's
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; 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
- H03H9/175—Acoustic mirrors
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
Description
Claims (8)
- 길이 방향을 구비한 베이스 부재;상기 베이스 부재의 길이 방향으로 소정의 간격을 두고서 배치되어, 상기 베이스 부재의 길이 방향에 실질적으로 직교하는 복수개의 내부 전극;상기 베이스 부재의 표면에 형성되고, 상기 복수개의 내부 전극에 접속되는 제1외부 전극 및 제2외부 전극을 포함하는 압전 공진자로서,상기 베이스 부재는 복수개의 적층된 압전체층을 포함하며,상기 복수개의 압전체층은 상기 베이스 부재의 길이 방향으로 분극되어 있고,상기 복수개의 내부 전극은 상기 베이스 부재의 길이 방향에 실질적으로 직교하도록 상기 복수개의 압전체층의 표면에 형성되며,상기 베이스 부재의 중간 부분에는 길이 방향으로 연장된 절단 부분이 형성되어 있으며, 상기 압전 공진자의 공진 주파수가 상기 절단 부분에 의하여 조정되는 것을 특징으로 하는 압전 공진자.
- 제1항에 있어서, 상기 베이스 부재의 길이 방향에서의 중간 부분이 일정한 깊이로 절단되는 것을 특징으로 하는 압전 공진자.
- 제1항에 있어서, 상기 베이스 부재의 길이 방향에서의 중간 부분이 변화하는깊이로 절단되는 것을 특징으로 하는 압전 공진자.
- 제3항에 있어서, 상기 베이스 부재의 길이 방향에서의 중간 부분의 중심부가 가장 깊게 절단되는 것을 특징으로 하는 압전 공진자.
- 압전 공진자로서,길이 방향을 구비한 베이스 부재; 상기 베이스 부재의 길이 방향에서 소정의 간격으로 상기 베이스 부재의 길이 방향에 실질적으로 직교하는 복수개의 내부 전극; 상기 베이스 부재의 표면에 형성되고, 상기 복수개의 내부 전극에 접속되는 제1외부 전극 및 제2외부 전극을 포함하며,상기 베이스 부재는 복수개의 적층된 압전체층을 포함하고, 상기 복수개의 압전체층은 상기 베이스 부재의 길이 방향으로 분극되며, 상기 복수개의 내부 전극은 상기 베이스 부재의 길이 방향에 실질적으로 직교하도록 상기 복수개의 압전체층의 표면에 형성되는 상기 압전 공진자의 공진 주파수를 조정하는 방법으로서,상기 압전 공진자의 공진 주파수를 조정하기 위하여 상기 베이스 부재의 길이 방향에서의 중간 부분을 절단하는 단계를 포함하는 것을 특징으로 하는 압전 공진자의 공진 주파수 조정방법.
- 제5항에 있어서, 상기 절단 단계는 상기 베이스 부재의 길이 방향에서의 중간 부분을 일정한 깊이로 절단하는 단계를 포함하는 것을 특징으로 하는 압전 공진자의 공진 주파수 조정방법.
- 제5항에 있어서, 상기 절단 단계는 상기 베이스 부재의 길이 방향에서의 중간 부분을 변화하는 깊이로 절단하는 단계를 포함하는 것을 특징으로 하는 압전 공진자의 공진 주파수 조정방법.
- 제7항에 있어서, 상기 절단 단계는 상기 베이스 부재의 길이 방향에서의 중간 부분의 중심부를 가장 깊게 절단하는 단계를 포함하는 것을 특징으로 하는 압전 공진자의 공진 주파수 조정 방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19782497A JP3378775B2 (ja) | 1997-07-07 | 1997-07-07 | 圧電共振子およびその周波数調整方法 |
JP9-197824 | 1997-07-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR19990013643A KR19990013643A (ko) | 1999-02-25 |
KR100303635B1 true KR100303635B1 (ko) | 2001-09-24 |
Family
ID=16380956
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019980027238A Expired - Fee Related KR100303635B1 (ko) | 1997-07-07 | 1998-07-07 | 압전공진자및그의주파수조정방법 |
Country Status (6)
Country | Link |
---|---|
US (1) | US6111480A (ko) |
EP (1) | EP0892494A3 (ko) |
JP (1) | JP3378775B2 (ko) |
KR (1) | KR100303635B1 (ko) |
CN (1) | CN1190890C (ko) |
NO (1) | NO313353B1 (ko) |
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JP2790180B2 (ja) * | 1987-12-29 | 1998-08-27 | 株式会社村田製作所 | 電歪共振装置 |
US5118982A (en) * | 1989-05-31 | 1992-06-02 | Nec Corporation | Thickness mode vibration piezoelectric transformer |
JP2965602B2 (ja) * | 1990-02-26 | 1999-10-18 | 日立金属株式会社 | 積層型変位素子 |
JPH06177689A (ja) * | 1992-12-04 | 1994-06-24 | Ngk Spark Plug Co Ltd | 梯子型電気濾波器の周波数調整方法 |
JPH07297661A (ja) * | 1994-04-27 | 1995-11-10 | Murata Mfg Co Ltd | 圧電共振子及び圧電共振子の共振周波数調整方法 |
JP3161216B2 (ja) * | 1994-04-27 | 2001-04-25 | 株式会社村田製作所 | 圧電共振子の共振周波数調整方法 |
JP3147793B2 (ja) * | 1996-11-22 | 2001-03-19 | 株式会社村田製作所 | ラダー型フィルタ |
JP4831368B2 (ja) | 2008-08-15 | 2011-12-07 | 信越化学工業株式会社 | グレートーンマスクブランク及びグレートーンマスク |
JP6261170B2 (ja) | 2013-01-30 | 2018-01-17 | 株式会社ディ・ライト | 遊技機 |
US10249661B2 (en) | 2014-08-22 | 2019-04-02 | Visera Technologies Company Limited | Imaging devices with dummy patterns |
-
1997
- 1997-07-07 JP JP19782497A patent/JP3378775B2/ja not_active Expired - Fee Related
-
1998
- 1998-06-25 EP EP98111759A patent/EP0892494A3/en not_active Withdrawn
- 1998-06-30 CN CNB981155898A patent/CN1190890C/zh not_active Expired - Fee Related
- 1998-07-06 NO NO19983118A patent/NO313353B1/no not_active IP Right Cessation
- 1998-07-06 US US09/110,304 patent/US6111480A/en not_active Expired - Fee Related
- 1998-07-07 KR KR1019980027238A patent/KR100303635B1/ko not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0892494A3 (en) | 2004-03-10 |
EP0892494A2 (en) | 1999-01-20 |
KR19990013643A (ko) | 1999-02-25 |
NO313353B1 (no) | 2002-09-16 |
NO983118L (no) | 1999-01-08 |
CN1209689A (zh) | 1999-03-03 |
CN1190890C (zh) | 2005-02-23 |
US6111480A (en) | 2000-08-29 |
JP3378775B2 (ja) | 2003-02-17 |
JPH1127081A (ja) | 1999-01-29 |
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