DE10205764A1 - Verbessertes Verfahren zum Herstellen eines akustischen Dünnfilmvolumenresonators (FBAR) und FBAR-Struktur, die dieses Verfahren einschließt - Google Patents
Verbessertes Verfahren zum Herstellen eines akustischen Dünnfilmvolumenresonators (FBAR) und FBAR-Struktur, die dieses Verfahren einschließtInfo
- Publication number
- DE10205764A1 DE10205764A1 DE10205764A DE10205764A DE10205764A1 DE 10205764 A1 DE10205764 A1 DE 10205764A1 DE 10205764 A DE10205764 A DE 10205764A DE 10205764 A DE10205764 A DE 10205764A DE 10205764 A1 DE10205764 A1 DE 10205764A1
- Authority
- DE
- Germany
- Prior art keywords
- recess
- substrate
- etching
- acoustic resonator
- fbar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000010409 thin film Substances 0.000 title claims abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 38
- 238000005530 etching Methods 0.000 claims description 37
- 239000010408 film Substances 0.000 description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
Description
Claims (20)
einem Substrat (202), das eine Vertiefung (206) auf einer oberen Oberfläche (204) aufweist; und
einem akustischen Resonator, der auf dem Substrat (202) hergestellt ist und die Vertiefung (206) über spannt, wobei der akustische Resonator ein Ätzloch (220) aufweist, das Zugang zu der Vertiefung (206) liefert.
Ätzen einer Vertiefung (206) in die obere Oberfläche (204);
Füllen der Vertiefung (206) mit einem Opfermaterial;
Herstellen des akustischen Resonators auf dem Substrat (202), wobei der akustische Resonator ein Ätzloch (220) aufweist; und
Entfernen des Opfermaterials.
einem Substrat (302), das eine Vertiefung (306) auf einer oberen Oberfläche (304) aufweist, wobei die Ver tiefung (306) Ätzkanäle (307) aufweist; und
einem akustischen Resonator, der auf dem Substrat (302) und über der Vertiefung (306) hergestellt ist.
Ätzen einer Vertiefung (306) in die obere Oberfläche (304), wobei die Vertiefung (306) zumindest einen Ätz kanal (307) aufweist;
Füllen der Vertiefung (306) mit einem Opfermaterial;
Herstellen des akustischen Resonators auf dem Substrat (302); und
Entfernen des Opfermaterials.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/798,496 US6714102B2 (en) | 2001-03-01 | 2001-03-01 | Method of fabricating thin film bulk acoustic resonator (FBAR) and FBAR structure embodying the method |
US09/798,496 | 2001-03-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10205764A1 true DE10205764A1 (de) | 2002-09-26 |
DE10205764B4 DE10205764B4 (de) | 2008-06-19 |
Family
ID=25173550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10205764A Expired - Fee Related DE10205764B4 (de) | 2001-03-01 | 2002-02-12 | Verbessertes Verfahren zum Herstellen eines akustischen Dünnfilmvolumenresonators (FBAR) und FBAR-Struktur, die dieses Verfahren einschließt |
Country Status (5)
Country | Link |
---|---|
US (1) | US6714102B2 (de) |
JP (1) | JP3878032B2 (de) |
CN (1) | CN1229913C (de) |
DE (1) | DE10205764B4 (de) |
TW (1) | TW514621B (de) |
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-
2001
- 2001-03-01 US US09/798,496 patent/US6714102B2/en not_active Expired - Lifetime
- 2001-11-01 TW TW090127182A patent/TW514621B/zh not_active IP Right Cessation
- 2001-11-30 CN CNB011424990A patent/CN1229913C/zh not_active Expired - Fee Related
-
2002
- 2002-02-12 DE DE10205764A patent/DE10205764B4/de not_active Expired - Fee Related
- 2002-02-28 JP JP2002052627A patent/JP3878032B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
TW514621B (en) | 2002-12-21 |
CN1229913C (zh) | 2005-11-30 |
JP2002314368A (ja) | 2002-10-25 |
DE10205764B4 (de) | 2008-06-19 |
CN1373556A (zh) | 2002-10-09 |
US20020121405A1 (en) | 2002-09-05 |
JP3878032B2 (ja) | 2007-02-07 |
US6714102B2 (en) | 2004-03-30 |
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