KR100865837B1 - 필터 - Google Patents
필터 Download PDFInfo
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- KR100865837B1 KR100865837B1 KR1020070052712A KR20070052712A KR100865837B1 KR 100865837 B1 KR100865837 B1 KR 100865837B1 KR 1020070052712 A KR1020070052712 A KR 1020070052712A KR 20070052712 A KR20070052712 A KR 20070052712A KR 100865837 B1 KR100865837 B1 KR 100865837B1
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- resonator
- lower electrode
- piezoelectric film
- outer circumference
- film
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- 239000010408 film Substances 0.000 claims abstract description 116
- 239000000758 substrate Substances 0.000 claims abstract description 45
- 239000010409 thin film Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims description 18
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 6
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical group Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 5
- 239000011787 zinc oxide Substances 0.000 claims description 5
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 abstract description 10
- -1 Filters Substances 0.000 abstract 1
- 238000005530 etching Methods 0.000 description 11
- 239000002131 composite material Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000011800 void material Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000004544 sputter deposition Methods 0.000 description 5
- 238000007687 exposure technique Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000001039 wet etching Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010948 rhodium Substances 0.000 description 2
- 238000010897 surface acoustic wave method Methods 0.000 description 2
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 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
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- NKZSPGSOXYXWQA-UHFFFAOYSA-N dioxido(oxo)titanium;lead(2+) Chemical compound [Pb+2].[O-][Ti]([O-])=O NKZSPGSOXYXWQA-UHFFFAOYSA-N 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Images
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
- H03H9/60—Electric coupling means therefor
- H03H9/605—Electric coupling means therefor consisting of a ladder configuration
-
- 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
-
- 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
- H03H9/02118—Means for compensation or elimination of undesirable effects of lateral leakage between adjacent resonators
-
- 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
- H03H9/02141—Means for compensation or elimination of undesirable effects of electric discharge due to pyroelectricity
-
- 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
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/13—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
- H03H9/132—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials characterized by a particular shape
-
- 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
- H03H9/173—Air-gaps
-
- 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
- H03H9/174—Membranes
-
- 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
- H03H2003/021—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 the resonators or networks being of the air-gap type
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
Description
Claims (14)
- 기판과, 그 기판 위에 설치된 하부 전극과, 그 하부 전극 위에 설치된 압전막과, 상기 압전막을 사이에 두고 상기 하부 전극과 대향하는 부분을 갖도록 상기 압전막 위에 설치된 상부 전극을 갖는 복수의 압전 박막 공진기를 구비하고,상기 복수의 압전 박막 공진기 중 일부는, 상기 압전막의 외주의 적어도 일부가 상기 상부 전극과 상기 하부 전극이 대향하는 영역의 외주보다 외측에 위치하는 제1 공진기이며,상기 복수의 압전 박막 공진기 중 다른 일부는, 상기 압전막의 외주의 적어도 일부가 상기 상부 전극과 상기 하부 전극이 대향하는 영역의 외주와 일치 또는 내측에 위치하는 제2 공진기인 것을 특징으로 하는 필터.
- 제1항에 있어서,입력 단자와 출력 단자를 구비하고,상기 입력 단자에 가장 가까운 직렬 공진기, 병렬 공진기, 상기 출력 단자에 가장 가까운 직렬 공진기 및 병렬 공진기 중 적어도 하나는 상기 제1 공진기인 것을 특징으로 하는 필터.
- 제1항에 있어서,입력 단자와 출력 단자를 구비하고,상기 입력 단자 및 상기 출력 단자 중 어느 한쪽에 가장 가까운 직렬 공진기에 병렬로 인덕터가 접속되고, 상기 인덕터가 병렬로 접속된 직렬 공진기에 가장 가까운 직렬 공진기, 병렬 공진기, 상기 입력 단자 및 상기 출력 단자의 다른 쪽에 가장 가까운 직렬 공진기 및 병렬 공진기 중 적어도 하나는 상기 제1 공진기인 것을 특징으로 하는 필터.
- 제1항 내지 제3항 중 어느 한 항에 있어서,상기 제1 공진기의 상기 압전막의 외주의 적어도 일부와 상기 대향하는 영역의 외주는 상사형(相似形:similar shape)인 것을 특징으로 하는 필터.
- 제1항 내지 제3항 중 어느 한 항에 있어서,상기 제1 공진기의 상기 압전막의 외주의 적어도 일부의 상기 압전막 위에 상기 압전막의 외주를 따라 설치된 부가막을 구비하는 것을 특징으로 하는 필터.
- 제5항에 있어서,상기 부가막은 상기 상부 전극과 동일한 재료의 막인 것을 특징으로 하는 필터.
- 제1항 내지 제3항 중 어느 한 항에 있어서,상기 상부 전극과 상기 하부 전극이 대향하는 영역은 타원형인 것을 특징으 로 하는 필터.
- 제1항 내지 제3항 중 어느 한 항에 있어서,상기 상부 전극과 상기 하부 전극이 대향하는 영역은 비평행으로 이루어지는 다각형인 것을 특징으로 하는 필터.
- 제1항 내지 제3항 중 어느 한 항에 있어서,상기 상부 전극과 상기 하부 전극이 대향하는 영역의 상기 하부 전극은, 상기 기판과의 사이에 돔 형상의 부푼 부분을 갖는 공극이 형성되도록 설치된 것을 특징으로 하는 필터.
- 제9항에 있어서,상기 상부 전극과 상기 하부 전극이 대향하는 영역을 상기 기판에 투영한 영역은, 상기 공극을 상기 기판에 투영한 영역에 포함되는 것을 특징으로 하는 필터.
- 제9항에 있어서,상기 압전막을 사이에 두고 상기 상부 전극과 상기 하부 전극이 대향하는 부분은 압축 응력인 것을 특징으로 하는 필터.
- 제9항에 있어서,상기 하부 전극에는 상기 공극으로 통하는 구멍부가 설치되어 있는 것을 특징으로 하는 필터.
- 제1항 내지 제3항 중 어느 한 항에 있어서,상기 압전막을 사이에 두고 상기 상부 전극과 상기 하부 전극이 대향하는 부분 아래의 상기 기판에는 공극이 형성되어 있는 것을 특징으로 하는 필터.
- 제1항 내지 제3항 중 어느 한 항에 있어서,상기 압전막은 (002) 방향을 주축으로 하는 배향성을 보이는 질화 알루미늄 또는 산화 아연인 것을 특징으로 하는 필터.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JPJP-P-2006-00151474 | 2006-05-31 | ||
JP2006151474A JP4719623B2 (ja) | 2006-05-31 | 2006-05-31 | フィルタ |
Publications (2)
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KR20070115722A KR20070115722A (ko) | 2007-12-06 |
KR100865837B1 true KR100865837B1 (ko) | 2008-10-29 |
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KR1020070052712A KR100865837B1 (ko) | 2006-05-31 | 2007-05-30 | 필터 |
Country Status (5)
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US (1) | US7545077B2 (ko) |
EP (1) | EP1863173A3 (ko) |
JP (1) | JP4719623B2 (ko) |
KR (1) | KR100865837B1 (ko) |
CN (1) | CN101083460B (ko) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4252584B2 (ja) * | 2006-04-28 | 2009-04-08 | 富士通メディアデバイス株式会社 | 圧電薄膜共振器およびフィルタ |
JP5161698B2 (ja) * | 2008-08-08 | 2013-03-13 | 太陽誘電株式会社 | 圧電薄膜共振子及びこれを用いたフィルタあるいは分波器 |
JP4944145B2 (ja) * | 2009-03-19 | 2012-05-30 | 太陽誘電株式会社 | 圧電薄膜共振子、フィルタ、通信モジュール、通信装置 |
JP2011160232A (ja) * | 2010-02-01 | 2011-08-18 | Ube Industries Ltd | 薄膜圧電共振器およびそれを用いた薄膜圧電フィルタ |
JP5792554B2 (ja) * | 2011-08-09 | 2015-10-14 | 太陽誘電株式会社 | 弾性波デバイス |
RU2486664C1 (ru) * | 2012-02-10 | 2013-06-27 | Открытое акционерное общество "Омский научно-исследовательский институт приборостроения" (ОАО "ОНИИП") | Режекторный активный пьезоэлектрический фильтр |
JP5931490B2 (ja) * | 2012-02-14 | 2016-06-08 | 太陽誘電株式会社 | 弾性波デバイス |
JP6510987B2 (ja) * | 2016-01-14 | 2019-05-08 | 太陽誘電株式会社 | 圧電薄膜共振器、フィルタおよびデュプレクサ |
US10491193B2 (en) * | 2016-05-13 | 2019-11-26 | Qorvo Us, Inc. | Circuit for suppressing signals adjacent to a passband |
JP7017364B2 (ja) | 2017-10-18 | 2022-02-08 | 太陽誘電株式会社 | ラダー型フィルタ、圧電薄膜共振器およびその製造方法 |
CN112585871A (zh) * | 2018-07-05 | 2021-03-30 | 阿库斯蒂斯有限公司 | 5G 3.5-3.6GHz频带声波谐振器射频滤波器电路 |
JP7290941B2 (ja) * | 2018-12-27 | 2023-06-14 | 太陽誘電株式会社 | 弾性波デバイス、フィルタおよびマルチプレクサ |
CN111786648A (zh) * | 2019-04-04 | 2020-10-16 | 中芯集成电路(宁波)有限公司上海分公司 | 体声波谐振器及其制造方法和滤波器、射频通信系统 |
CN111600566B (zh) * | 2020-04-21 | 2021-06-01 | 诺思(天津)微系统有限责任公司 | 滤波器、体声波谐振器组件及其制造方法、电子设备 |
CN115996038B (zh) * | 2022-12-26 | 2023-08-22 | 北京芯溪半导体科技有限公司 | 一种滤波器、多工器以及通信设备 |
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- 2007-05-30 KR KR1020070052712A patent/KR100865837B1/ko active IP Right Grant
- 2007-05-30 US US11/806,129 patent/US7545077B2/en active Active
- 2007-05-30 EP EP07109239A patent/EP1863173A3/en not_active Withdrawn
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CN101083460B (zh) | 2010-10-13 |
CN101083460A (zh) | 2007-12-05 |
KR20070115722A (ko) | 2007-12-06 |
US20070279154A1 (en) | 2007-12-06 |
EP1863173A3 (en) | 2009-07-15 |
JP4719623B2 (ja) | 2011-07-06 |
US7545077B2 (en) | 2009-06-09 |
EP1863173A2 (en) | 2007-12-05 |
JP2007324823A (ja) | 2007-12-13 |
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