KR100819669B1 - 압전 박막 공진기 및 필터 - Google Patents
압전 박막 공진기 및 필터 Download PDFInfo
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- KR100819669B1 KR100819669B1 KR20060104353A KR20060104353A KR100819669B1 KR 100819669 B1 KR100819669 B1 KR 100819669B1 KR 20060104353 A KR20060104353 A KR 20060104353A KR 20060104353 A KR20060104353 A KR 20060104353A KR 100819669 B1 KR100819669 B1 KR 100819669B1
- Authority
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- South Korea
- Prior art keywords
- film
- lower electrode
- piezoelectric
- substrate
- piezoelectric thin
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- 239000012528 membrane Substances 0.000 claims abstract description 47
- 239000011800 void material Substances 0.000 claims abstract description 18
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- 238000000034 method Methods 0.000 claims description 14
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- 239000011787 zinc oxide Substances 0.000 claims description 7
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 5
- 238000005530 etching Methods 0.000 abstract description 19
- 238000004544 sputter deposition Methods 0.000 abstract description 5
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- 239000002253 acid Substances 0.000 description 1
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- NKZSPGSOXYXWQA-UHFFFAOYSA-N dioxido(oxo)titanium;lead(2+) Chemical compound [Pb+2].[O-][Ti]([O-])=O NKZSPGSOXYXWQA-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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- 229910052732 germanium Inorganic materials 0.000 description 1
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- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 239000002648 laminated material Substances 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
- 239000007788 liquid Substances 0.000 description 1
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- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- 229910052698 phosphorus Inorganic materials 0.000 description 1
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- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
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- 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
- 239000002002 slurry Substances 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
- 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
- H03H9/02133—Means for compensation or elimination of undesirable effects of stress
-
- 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
- H03H9/46—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
-
- 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 (9)
- 기판 상에, 상기 기판과의 사이에 돔 형상의 부푼 부분을 갖는 공극이 형성되도록 설치된 하부 전극과,상기 하부 전극 상에 설치된 압전막과,상기 압전막 상에 설치된 상부 전극을 구비하며,상기 압전막을 사이에 두는 상기 하부 전극과 상기 상부 전극과의 중첩 영역이 멤브레인 영역이고,상기 공극의 상기 기판면 상에의 투영 영역은 상기 멤브레인 영역을 포함하며,상기 하부 전극, 상기 압전막 및 상기 상부 전극으로 이루어지는 복합막의 응력은 압축 응력인 것을 특징으로 하는 압전 박막 공진기.
- 제1항에 있어서,상기 투영 영역의 윤곽은 곡선을 포함하는 것을 특징으로 하는 압전 박막 공진기.
- 제1항에 있어서,상기 투영 영역의 윤곽은 비평행으로 이루어지는 다각형인 것을 특징으로 하는 압전 박막 공진기.
- 제1항에 있어서,상기 멤브레인 영역의 윤곽은 곡선으로 이루어지는 것을 특징으로 하는 압전 박막 공진기.
- 제1항에 있어서,상기 멤브레인 영역의 윤곽은 비평행으로 이루어지는 다각형인 것을 특징으로 하는 압전 박막 공진기.
- 삭제
- 제1항 내지 제5항 중 어느 한 항에 있어서,상기 하부 전극에 구멍부가 설치되어 있는 것을 특징으로 하는 압전 박막 공진기.
- 제1항 내지 제5항 중 어느 한 항에 있어서,상기 압전막은, (002)방향을 주축으로 하는 배향성을 나타내는 질화 알루미늄 및 산화 아연 중 어느 하나인 것을 특징으로 하는 압전 박막 공진기.
- 제1항 내지 제5항 중 어느 한 항에 기재한 압전 박막 공진기를 복수 조합하여 구성되어 있는 것을 특징으로 하는 필터.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JPJP-P-2005-00312094 | 2005-10-27 | ||
JP2005312094A JP4707533B2 (ja) | 2005-10-27 | 2005-10-27 | 圧電薄膜共振器およびフィルタ |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20070045945A KR20070045945A (ko) | 2007-05-02 |
KR100819669B1 true KR100819669B1 (ko) | 2008-04-04 |
Family
ID=37682623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR20060104353A KR100819669B1 (ko) | 2005-10-27 | 2006-10-26 | 압전 박막 공진기 및 필터 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7482738B2 (ko) |
EP (1) | EP1783903B1 (ko) |
JP (1) | JP4707533B2 (ko) |
KR (1) | KR100819669B1 (ko) |
CN (1) | CN100576734C (ko) |
DE (1) | DE602006004289D1 (ko) |
Families Citing this family (104)
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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 |
US7845536B2 (en) | 2004-10-18 | 2010-12-07 | Tyco Healthcare Group Lp | Annular adhesive structure |
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JP5080858B2 (ja) * | 2007-05-17 | 2012-11-21 | 太陽誘電株式会社 | 圧電薄膜共振器およびフィルタ |
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JP5279068B2 (ja) * | 2008-02-15 | 2013-09-04 | 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、および通信装置 |
JP5191762B2 (ja) * | 2008-03-06 | 2013-05-08 | 太陽誘電株式会社 | 圧電薄膜共振器、フィルタ、および通信装置 |
JP5226409B2 (ja) * | 2008-07-17 | 2013-07-03 | 太陽誘電株式会社 | 共振デバイス、通信モジュール、通信装置、共振デバイスの製造方法 |
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JP2010205921A (ja) * | 2009-03-03 | 2010-09-16 | Olympus Corp | 半導体装置および半導体装置の製造方法 |
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US7482738B2 (en) | 2009-01-27 |
CN100576734C (zh) | 2009-12-30 |
CN1956324A (zh) | 2007-05-02 |
EP1783903B1 (en) | 2008-12-17 |
EP1783903A2 (en) | 2007-05-09 |
DE602006004289D1 (de) | 2009-01-29 |
KR20070045945A (ko) | 2007-05-02 |
EP1783903A3 (en) | 2007-11-07 |
JP2007124166A (ja) | 2007-05-17 |
JP4707533B2 (ja) | 2011-06-22 |
US20070096597A1 (en) | 2007-05-03 |
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