JP2007324823A - フィルタ - Google Patents
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- JP2007324823A JP2007324823A JP2006151474A JP2006151474A JP2007324823A JP 2007324823 A JP2007324823 A JP 2007324823A JP 2006151474 A JP2006151474 A JP 2006151474A JP 2006151474 A JP2006151474 A JP 2006151474A JP 2007324823 A JP2007324823 A JP 2007324823A
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- 239000010408 film Substances 0.000 claims abstract description 108
- 239000000758 substrate Substances 0.000 claims abstract description 42
- 239000010409 thin film Substances 0.000 claims abstract description 20
- 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 compound 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 description 3
- 230000015556 catabolic process Effects 0.000 abstract description 7
- 238000005530 etching Methods 0.000 description 13
- 239000002131 composite material Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
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- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 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
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000012528 membrane Substances 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
- 239000010949 copper Substances 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
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 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
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000003989 dielectric material Substances 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
- 238000001704 evaporation Methods 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
- 238000010030 laminating Methods 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
- 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
- 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
Images
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 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
【解決手段】本発明は、基板と、基板上に設けられた下部電極と、下部電極上に設けられた圧電膜と、圧電膜を挟み前記下部電極と対向する部分を有するように圧電膜上に設けられた上部電極と、を有する複数の圧電薄膜共振器を具備し、複数の圧電薄膜共振器のうち一部(S11、S14、P11、P14)は、圧電膜の外周の少なくとも一部が上部電極と下部電極とが対向する領域の外周より外側に位置する第1共振器(41)であり、複数の圧電薄膜共振器のうち他の一部(S12、S13、P12、P13)は、圧電膜の外周の少なくとも一部が上部電極と下部電極とが対向する領域の外周と略一致または内側に位置する第2共振器(42)であることを特徴とするフィルタである。
【選択図】図2
Description
13 下部電極
14 圧電膜
15 上部電極
16 空隙
17 孔部
18 犠牲層
19 導入部
20 開口部
22 付加膜
24 対向する領域
26 上部電極の外周
28 圧電膜の外周
Claims (14)
- 基板と、該基板上に設けられた下部電極と、該下部電極上に設けられた圧電膜と、前記圧電膜を挟み前記下部電極と対向する部分を有するように前記圧電膜上に設けられた上部電極と、を有する複数の圧電薄膜共振器を具備し、
前記複数の圧電薄膜共振器のうち一部は、前記圧電膜の外周の少なくとも一部が前記上部電極と前記下部電極とが対向する領域の外周より外側に位置する第1共振器であり、
前記複数の圧電薄膜共振器のうち他の一部は、前記圧電膜の外周の少なくとも一部が前記上部電極と前記下部電極とが対向する領域の外周と略一致または内側に位置する第2共振器であることを特徴とするフィルタ。 - 入力端子と出力端子とを具備し、
前記入力端子に最も近い直列共振器、並列共振器、前記出力端子に最も近い直列共振器および並列共振器の少なくとも1つは前記第1共振器であることを特徴とする請求項1記載のフィルタ。 - 入力端子と出力端子とを具備し、
前記入力端子および前記出力端子のいずれか一方に最も近い直列共振器に並列にインダクタが接続され、前記インダクタが並列に接続された直列共振器に最も近い直列共振器、並列共振器、前記入力端子および前記出力端子の他方に最も近い直列共振器および並列共振器の少なくとも1つは前記第1共振器であることを特徴とする請求項1記載のフィルタ。 - 前記第1共振器の前記圧電膜の外周の少なくとも一部と前記対向する領域の外周とは相似形であることを特徴とする請求項1から3のいずれか一項記載のフィルタ。
- 前記第1共振器の前記圧電膜の外周の少なくとも一部の前記圧電膜上に前記外周に沿って設けられた付加膜を具備することを特徴とする請求項1から4のいずれか一項記載のフィルタ。
- 前記付加膜は前記上部電極と同じ材料の膜であることを特徴とする請求項5記載のフィルタ。
- 前記上部電極と前記下部電極とが対向する領域は楕円形であることを特徴とする請求項1から6のいずれか一項記載のフィルタ。
- 前記上部電極と前記下部電極とが対向する領域は非平行からなる多角形であることを特徴とする請求項1から6のいずれか一項記載のフィルタ。
- 前記上部電極と前記下部電極とが対向する領域の前記下部電極は、前記基板との間にドーム状の膨らみを有する空隙が形成されるように設けられたことを特徴とする請求項1から8のいずれか一項記載のフィルタ。
- 上部電極と前記下部電極とが対向する領域を前記基板に投影した領域は、前記空隙を前記基板に投影した領域に含まれることを特徴とする請求項9記載のフィルタ。
- 前記圧電膜を挟み前記上部電極と前記下部電極とが対向する部分は圧縮応力であることを特徴とする請求項9または10記載のフィルタ。
- 前記下部電極には前記空隙に通じる孔部が設けられていることを特徴とする請求項9から11のいずれか一項記載のフィルタ。
- 前記圧電膜を挟み前記上部電極と前記下部電極とが対向する部分下の前記基板には空隙が形成されていることを特徴とする請求項1から11のいずれか一項記載のフィルタ。
- 前記圧電膜は(002)方向を主軸とする配向性を示す窒化アルミニウムまたは酸化亜鉛であることを特徴とする請求項1から13のいずれか一項記載のフィルタ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006151474A JP4719623B2 (ja) | 2006-05-31 | 2006-05-31 | フィルタ |
EP07109239A EP1863173A3 (en) | 2006-05-31 | 2007-05-30 | Filter having multiple piezoelectric thin-film resonators |
US11/806,129 US7545077B2 (en) | 2006-05-31 | 2007-05-30 | Filter having multiple piezoelectric thin-film resonators |
KR1020070052712A KR100865837B1 (ko) | 2006-05-31 | 2007-05-30 | 필터 |
CN200710105462XA CN101083460B (zh) | 2006-05-31 | 2007-05-31 | 具有多个压电薄膜谐振器的滤波器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006151474A JP4719623B2 (ja) | 2006-05-31 | 2006-05-31 | フィルタ |
Publications (2)
Publication Number | Publication Date |
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JP2007324823A true JP2007324823A (ja) | 2007-12-13 |
JP4719623B2 JP4719623B2 (ja) | 2011-07-06 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2006151474A Active JP4719623B2 (ja) | 2006-05-31 | 2006-05-31 | フィルタ |
Country Status (5)
Country | Link |
---|---|
US (1) | US7545077B2 (ja) |
EP (1) | EP1863173A3 (ja) |
JP (1) | JP4719623B2 (ja) |
KR (1) | KR100865837B1 (ja) |
CN (1) | CN101083460B (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010045437A (ja) * | 2008-08-08 | 2010-02-25 | Fujitsu Ltd | 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 |
JP2010226171A (ja) * | 2009-03-19 | 2010-10-07 | Taiyo Yuden Co Ltd | 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 |
JP2013168748A (ja) * | 2012-02-14 | 2013-08-29 | Taiyo Yuden Co Ltd | 弾性波デバイス |
JP2017126900A (ja) * | 2016-01-14 | 2017-07-20 | 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 |
US10666226B2 (en) | 2017-10-18 | 2020-05-26 | Taiyo Yuden Co., Ltd. | Ladder-type filter, piezoelectric thin film resonator, and method of fabricating the same |
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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 |
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 |
US10491193B2 (en) * | 2016-05-13 | 2019-11-26 | Qorvo Us, Inc. | Circuit for suppressing signals adjacent to a passband |
DE112019003212T5 (de) * | 2018-07-05 | 2021-07-08 | Akoustis, Inc. | 5G 3,5 - 3,6 GHz Band HF-Filterschaltung für einen Akustische-Wellen-Resonator |
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 |
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JP2010045437A (ja) * | 2008-08-08 | 2010-02-25 | Fujitsu Ltd | 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 |
JP2010226171A (ja) * | 2009-03-19 | 2010-10-07 | Taiyo Yuden Co Ltd | 圧電薄膜共振子、フィルタ、通信モジュール、通信装置 |
US8240015B2 (en) | 2009-03-19 | 2012-08-14 | Taiyo Yuden Co., Ltd. | Method of manufacturing thin film resonator |
US9240769B2 (en) | 2009-03-19 | 2016-01-19 | Taiyo Yuden Co., Ltd. | Piezoelectric thin film resonator, filter, communication module and communication device |
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 |
JP2013168748A (ja) * | 2012-02-14 | 2013-08-29 | Taiyo Yuden Co Ltd | 弾性波デバイス |
JP2017126900A (ja) * | 2016-01-14 | 2017-07-20 | 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 |
US10469049B2 (en) | 2016-01-14 | 2019-11-05 | Taiyo Yuden Co., Ltd. | Piezoelectric thin film resonator, filter, and duplexer |
US10666226B2 (en) | 2017-10-18 | 2020-05-26 | Taiyo Yuden Co., Ltd. | Ladder-type filter, piezoelectric thin film resonator, and method of fabricating the same |
Also Published As
Publication number | Publication date |
---|---|
KR20070115722A (ko) | 2007-12-06 |
US20070279154A1 (en) | 2007-12-06 |
KR100865837B1 (ko) | 2008-10-29 |
JP4719623B2 (ja) | 2011-07-06 |
US7545077B2 (en) | 2009-06-09 |
EP1863173A3 (en) | 2009-07-15 |
EP1863173A2 (en) | 2007-12-05 |
CN101083460A (zh) | 2007-12-05 |
CN101083460B (zh) | 2010-10-13 |
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