EP1751818A1 - Mikromechanisches hf-schaltelement sowie verfahren zur herstellung - Google Patents
Mikromechanisches hf-schaltelement sowie verfahren zur herstellungInfo
- Publication number
- EP1751818A1 EP1751818A1 EP05754609A EP05754609A EP1751818A1 EP 1751818 A1 EP1751818 A1 EP 1751818A1 EP 05754609 A EP05754609 A EP 05754609A EP 05754609 A EP05754609 A EP 05754609A EP 1751818 A1 EP1751818 A1 EP 1751818A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metallic surface
- dielectric layer
- micromechanical
- switching element
- dielectric
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/10—Auxiliary devices for switching or interrupting
- H01P1/12—Auxiliary devices for switching or interrupting by mechanical chopper
- H01P1/127—Strip line switches
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/42—Piezoelectric device making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49105—Switch making
Definitions
- the present invention relates to a micro-mechanical RF switching element in which a free-standing movable element is arranged over a metallic surface on a substrate in such a way that it is drawn to the metallic surface by applying an electrical voltage between the metallic surface and the movable element on which a dielectric layer is applied.
- the invention also relates to a method for producing such micromechanical RF switching elements, in which the dielectric layer is deposited on the metallic surface.
- the currently most frequently used dielectric for capacitive HF-MEMS switches is the PECvD-Si 3 N 4 . It is available as standard in every IC production, can be produced in high quality in layer thicknesses from 100 nm, has an ⁇ r of 6 - 7 and is characterized by a relatively high chemical resistance.
- An example of a capacitive HF-MEMS switch and the method for its production can be found in the
- FIG. 1 The schematic representation of a capacitive RF-MEMS switch in FIG. 1 shows the substrate 1 on which a signal line 2 for the transmission of the RF signals is applied as a metallic layer.
- Suspensions 4 are built up on the substrate 1 on both sides of this signal line 2 and hold a metallic membrane 5 as a free-standing movable element of the switch at a distance above the substrate surface.
- the metallic suspensions 4 are dimensioned such that the membrane 5 hovers only a few ⁇ m above the signal line 2.
- a dielectric 3 is applied to the signal line 2, which was generated according to the present method.
- This dielectric is thus a preferably sputtered-on, piezoelectric AlN layer which has a columnar, polycrystalline structure with a texture.
- the membrane 5 By applying an electrical voltage between the signal line 2 and the membrane 5, the membrane 5 is pulled down onto the dielectric 3, as a result of which RF signals transmitted on the signal line 2 are reflected at this point and thus blocked. When the voltage is switched off, the membrane 5 is released from the mechanical residual stress
Landscapes
- Micromachines (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004026654A DE102004026654B4 (de) | 2004-06-01 | 2004-06-01 | Mikromechanisches HF-Schaltelement sowie Verfahren zur Herstellung |
| PCT/DE2005/000966 WO2005119831A1 (de) | 2004-06-01 | 2005-05-27 | Mikromechanisches hf-schaltelement sowie verfahren zur herstellung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1751818A1 true EP1751818A1 (de) | 2007-02-14 |
| EP1751818B1 EP1751818B1 (de) | 2015-07-08 |
Family
ID=34971280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05754609.5A Expired - Lifetime EP1751818B1 (de) | 2004-06-01 | 2005-05-27 | Mikromechanisches hf-schaltelement sowie verfahren zur herstellung |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7939993B2 (de) |
| EP (1) | EP1751818B1 (de) |
| DE (1) | DE102004026654B4 (de) |
| WO (1) | WO2005119831A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI401308B (zh) * | 2008-12-23 | 2013-07-11 | Kuo Chun Ying | 奈米散熱材料 |
| KR102005808B1 (ko) * | 2011-09-02 | 2019-07-31 | 카벤디시 키네틱스, 인크. | Mems 장치용으로 병합된 레그 및 반가요성 고정장치 |
| EP3977605B1 (de) * | 2019-05-28 | 2023-04-26 | B&R Industrial Automation GmbH | Transporteinrichtung |
| US12330933B2 (en) * | 2022-12-20 | 2025-06-17 | xMEMS Labs, Inc. | Cantilever structure with intermediate substrate connection having a film with on anchor with protrusion |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3922475A (en) * | 1970-06-22 | 1975-11-25 | Rockwell International Corp | Process for producing nitride films |
| US5075600A (en) * | 1990-06-07 | 1991-12-24 | General Electric Company | Piezoelectrically actuated variable capacitor |
| JP4641569B2 (ja) * | 1998-07-24 | 2011-03-02 | 日本碍子株式会社 | 窒化アルミニウム質焼結体、耐蝕性部材、金属埋設および半導体保持装置 |
| US6329305B1 (en) * | 2000-02-11 | 2001-12-11 | Agere Systems Guardian Corp. | Method for producing devices having piezoelectric films |
| US6376787B1 (en) * | 2000-08-24 | 2002-04-23 | Texas Instruments Incorporated | Microelectromechanical switch with fixed metal electrode/dielectric interface with a protective cap layer |
| US20020074897A1 (en) * | 2000-12-15 | 2002-06-20 | Qing Ma | Micro-electromechanical structure resonator frequency adjustment using radient energy trimming and laser/focused ion beam assisted deposition |
| AU2002359370A1 (en) * | 2001-11-09 | 2003-05-26 | Coventor, Incorporated | Mems device having contact and standoff bumps and related methods |
| JP3712123B2 (ja) * | 2002-03-25 | 2005-11-02 | 富士通メディアデバイス株式会社 | 可変キャパシタ及びその製造方法 |
| US6944922B2 (en) * | 2002-08-13 | 2005-09-20 | Trikon Technologies Limited | Method of forming an acoustic resonator |
| JP4377740B2 (ja) * | 2004-04-28 | 2009-12-02 | 株式会社東芝 | 圧電駆動型mems素子およびこの圧電駆動型mems素子を有する移動体通信機 |
| US7960900B2 (en) * | 2004-06-14 | 2011-06-14 | Stmicroelectronics S.A. | Assembly of a microswitch and of an acoustic resonator |
| JP2006093463A (ja) * | 2004-09-24 | 2006-04-06 | Toshiba Corp | 圧電mems素子及びチューナブルフィルタ |
| JP4744849B2 (ja) * | 2004-11-11 | 2011-08-10 | 株式会社東芝 | 半導体装置 |
| US7786820B2 (en) * | 2005-03-21 | 2010-08-31 | Ngimat Co. | Tunable dielectric radio frequency microelectromechanical system capacitive switch |
| JP4580826B2 (ja) * | 2005-06-17 | 2010-11-17 | 株式会社東芝 | マイクロメカニカルデバイス、マイクロスイッチ、容量可変キャパシタ、高周波回路及び光学スイッチ |
| KR100726436B1 (ko) * | 2005-07-27 | 2007-06-11 | 삼성전자주식회사 | 정전기력 및 압전력에 의해 구동되는 멤스 스위치 |
| KR100785084B1 (ko) * | 2006-03-30 | 2007-12-12 | 삼성전자주식회사 | 압전형 mems 스위치 및 그 제조방법 |
| JP4234737B2 (ja) * | 2006-07-24 | 2009-03-04 | 株式会社東芝 | Memsスイッチ |
| JP2009194291A (ja) * | 2008-02-18 | 2009-08-27 | Toshiba Corp | アクチュエータ |
-
2004
- 2004-06-01 DE DE102004026654A patent/DE102004026654B4/de not_active Expired - Fee Related
-
2005
- 2005-05-27 WO PCT/DE2005/000966 patent/WO2005119831A1/de not_active Ceased
- 2005-05-27 US US11/628,246 patent/US7939993B2/en active Active
- 2005-05-27 EP EP05754609.5A patent/EP1751818B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005119831A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US7939993B2 (en) | 2011-05-10 |
| DE102004026654A1 (de) | 2005-12-29 |
| WO2005119831A1 (de) | 2005-12-15 |
| EP1751818B1 (de) | 2015-07-08 |
| US20080047809A1 (en) | 2008-02-28 |
| DE102004026654B4 (de) | 2009-07-09 |
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