JP4629492B2 - 圧電薄膜共振子およびフィルタ - Google Patents
圧電薄膜共振子およびフィルタ Download PDFInfo
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- JP4629492B2 JP4629492B2 JP2005137877A JP2005137877A JP4629492B2 JP 4629492 B2 JP4629492 B2 JP 4629492B2 JP 2005137877 A JP2005137877 A JP 2005137877A JP 2005137877 A JP2005137877 A JP 2005137877A JP 4629492 B2 JP4629492 B2 JP 4629492B2
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- 239000010409 thin film Substances 0.000 title claims description 84
- 239000010408 film Substances 0.000 claims description 106
- 239000000758 substrate Substances 0.000 claims description 18
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 7
- 229910052707 ruthenium Inorganic materials 0.000 claims description 7
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 claims description 4
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 4
- 230000008878 coupling Effects 0.000 description 43
- 238000010168 coupling process Methods 0.000 description 43
- 238000005859 coupling reaction Methods 0.000 description 43
- 239000000463 material Substances 0.000 description 13
- 238000005530 etching Methods 0.000 description 8
- 238000003780 insertion Methods 0.000 description 8
- 230000037431 insertion Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000007687 exposure technique Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000011800 void material Substances 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000000593 degrading effect Effects 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000007726 management method Methods 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
- 238000004544 sputter deposition Methods 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 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
- 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
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 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
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000010897 surface acoustic wave method Methods 0.000 description 1
- 230000003746 surface roughness Effects 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
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/24—Constructional features of resonators of material which is not piezoelectric, electrostrictive, or magnetostrictive
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/46—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 elements; 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
- H03H9/131—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials consisting of a multilayered structure
-
- 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
- H03H9/125—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 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
- H03H9/174—Membranes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/56—Monolithic crystal filters
- H03H9/566—Electric coupling means therefor
- H03H9/568—Electric coupling means therefor consisting of a ladder configuration
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Description
12 下部電極
14 圧電膜
16 上部電極
18 基板表面の空隙
22 メンブレン領域
24 下部薄膜層
26 上部薄膜層
Claims (7)
- 基板上に形成された下部電極と、
該下部電極上に形成された圧電膜と、
該圧電膜上に形成された上部電極と、を具備し、
前記上部電極の膜厚は前記下部電極の膜厚より厚く、
前記圧電膜は窒化アルミニウム(AlN)からなり、
前記上部電極および前記下部電極は、ルテニウム(Ru)を主に含み、
前記上部電極と前記下部電極の膜厚の和をd1、前記圧電膜の膜厚をd2としたとき、
0.1<d1/d2<1
であることを特徴とする圧電薄膜共振子。 - 前記上部電極の膜厚をt1、前記下部電極の膜厚をt2としたとき、
1<t1/t2<3
であることを特徴とする請求項1記載の圧電薄膜共振子。 - 前記下部電極の下には薄膜層を有し、前記上部電極の上には薄膜層を有さないことを特徴とする請求項1または2記載の圧電薄膜共振子。
- 前記下部電極の下および前記上部電極の上の少なくとも一方に薄膜層を有す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圧電薄膜共振子。
- 前記圧電膜は、(002)方向を主軸とする配向性を有する窒化アルミニウムであ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圧電薄膜共振子。
- 前記圧電膜を挟み、前記上部電極と前記下部電極の対向する領域が楕円状である請求項1から5のいずれか一項記載の圧電薄膜共振子。
- 請求項1から6記載の圧電薄膜共振子を複数具備することを特徴とするフィルタ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005137877A JP4629492B2 (ja) | 2005-05-10 | 2005-05-10 | 圧電薄膜共振子およびフィルタ |
DE200610020992 DE102006020992A1 (de) | 2005-05-10 | 2006-05-04 | Piezoelektrischer Dünnfilmresonator und Filter |
KR20060041026A KR100771345B1 (ko) | 2005-05-10 | 2006-05-08 | 압전 박막 공진자 및 필터 |
US11/430,184 US7579761B2 (en) | 2005-05-10 | 2006-05-09 | Piezoelectric thin-film resonator and filter |
CN2006100801804A CN1862959B (zh) | 2005-05-10 | 2006-05-10 | 压电薄膜谐振器与滤波器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005137877A JP4629492B2 (ja) | 2005-05-10 | 2005-05-10 | 圧電薄膜共振子およびフィルタ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006319479A JP2006319479A (ja) | 2006-11-24 |
JP4629492B2 true JP4629492B2 (ja) | 2011-02-09 |
Family
ID=37311280
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005137877A Active JP4629492B2 (ja) | 2005-05-10 | 2005-05-10 | 圧電薄膜共振子およびフィルタ |
Country Status (5)
Country | Link |
---|---|
US (1) | US7579761B2 (ja) |
JP (1) | JP4629492B2 (ja) |
KR (1) | KR100771345B1 (ja) |
CN (1) | CN1862959B (ja) |
DE (1) | DE102006020992A1 (ja) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005073175A (ja) * | 2003-08-27 | 2005-03-17 | Fujitsu Media Device Kk | 圧電薄膜共振子及びその製造方法 |
US7737612B1 (en) | 2005-05-25 | 2010-06-15 | Maxim Integrated Products, Inc. | BAW resonator bi-layer top electrode with zero etch undercut |
US7612488B1 (en) | 2007-01-16 | 2009-11-03 | Maxim Integrated Products, Inc. | Method to control BAW resonator top electrode edge during patterning |
JP4917481B2 (ja) * | 2007-06-13 | 2012-04-18 | 太陽誘電株式会社 | フィルタ |
KR20100041846A (ko) * | 2007-11-21 | 2010-04-22 | 후지쯔 가부시끼가이샤 | 필터, 그것을 이용한 듀플렉서 및 그 듀플렉서를 이용한 통신기 |
JP5220503B2 (ja) * | 2008-07-23 | 2013-06-26 | 太陽誘電株式会社 | 弾性波デバイス |
JP5322597B2 (ja) * | 2008-11-13 | 2013-10-23 | 太陽誘電株式会社 | 共振子、フィルタ、デュープレクサおよび電子装置 |
JP5709368B2 (ja) * | 2009-11-04 | 2015-04-30 | キヤノン株式会社 | 生体情報取得装置 |
JP5296113B2 (ja) * | 2010-02-25 | 2013-09-25 | 日本電波工業株式会社 | 圧電振動片の製造方法、圧電振動片及び圧電デバイス |
US8438924B2 (en) * | 2011-02-03 | 2013-05-14 | Inficon, Inc. | Method of determining multilayer thin film deposition on a piezoelectric crystal |
CN102545827B (zh) * | 2012-01-04 | 2015-09-09 | 华为技术有限公司 | 薄膜体声波谐振器、通信器件和射频模块 |
US9853626B2 (en) | 2014-03-31 | 2017-12-26 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Acoustic resonator comprising acoustic redistribution layers and lateral features |
US9548438B2 (en) * | 2014-03-31 | 2017-01-17 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Acoustic resonator comprising acoustic redistribution layers |
US9862592B2 (en) * | 2015-03-13 | 2018-01-09 | Taiwan Semiconductor Manufacturing Co., Ltd. | MEMS transducer and method for manufacturing the same |
US10483943B2 (en) | 2017-06-27 | 2019-11-19 | Globalfoundries Inc. | Artificially oriented piezoelectric film for integrated filters |
WO2019028288A1 (en) * | 2017-08-03 | 2019-02-07 | Akoustis, Inc. | ELLIPTICAL STRUCTURE FOR VOLUME ACOUSTIC WAVE RESONATOR |
JP7491408B2 (ja) | 2020-12-11 | 2024-05-28 | 株式会社村田製作所 | 圧電振動子、圧電発振器、及び圧電振動子製造方法 |
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2005
- 2005-05-10 JP JP2005137877A patent/JP4629492B2/ja active Active
-
2006
- 2006-05-04 DE DE200610020992 patent/DE102006020992A1/de not_active Ceased
- 2006-05-08 KR KR20060041026A patent/KR100771345B1/ko active IP Right Grant
- 2006-05-09 US US11/430,184 patent/US7579761B2/en active Active
- 2006-05-10 CN CN2006100801804A patent/CN1862959B/zh active Active
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JP2003204239A (ja) * | 2001-10-26 | 2003-07-18 | Fujitsu Ltd | 圧電薄膜共振子、フィルタ、および圧電薄膜共振子の製造方法 |
JP2003179452A (ja) * | 2001-12-10 | 2003-06-27 | Matsushita Electric Ind Co Ltd | 圧電振動子の製造方法 |
JP2005073175A (ja) * | 2003-08-27 | 2005-03-17 | Fujitsu Media Device Kk | 圧電薄膜共振子及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
DE102006020992A1 (de) | 2006-11-23 |
CN1862959B (zh) | 2011-12-07 |
KR100771345B1 (ko) | 2007-10-29 |
CN1862959A (zh) | 2006-11-15 |
KR20060116712A (ko) | 2006-11-15 |
JP2006319479A (ja) | 2006-11-24 |
US20060255693A1 (en) | 2006-11-16 |
US7579761B2 (en) | 2009-08-25 |
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