EP1200198B1 - Aktorbauglied für einen mikrozerstäuber und verfahren zu seiner herstellung - Google Patents
Aktorbauglied für einen mikrozerstäuber und verfahren zu seiner herstellung Download PDFInfo
- Publication number
- EP1200198B1 EP1200198B1 EP00949481A EP00949481A EP1200198B1 EP 1200198 B1 EP1200198 B1 EP 1200198B1 EP 00949481 A EP00949481 A EP 00949481A EP 00949481 A EP00949481 A EP 00949481A EP 1200198 B1 EP1200198 B1 EP 1200198B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- diaphragm
- passage means
- microactor
- liquid
- atomized
- 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.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title description 9
- 239000007788 liquid Substances 0.000 claims description 54
- 239000000758 substrate Substances 0.000 claims description 29
- 239000012530 fluid Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 17
- 238000000889 atomisation Methods 0.000 claims description 13
- 239000004065 semiconductor Substances 0.000 claims description 9
- 238000005530 etching Methods 0.000 claims description 8
- 238000009736 wetting Methods 0.000 claims description 5
- 238000000059 patterning Methods 0.000 claims 1
- 239000012528 membrane Substances 0.000 description 45
- 239000010410 layer Substances 0.000 description 21
- 229910052710 silicon Inorganic materials 0.000 description 18
- 239000010703 silicon Substances 0.000 description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 17
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000002513 implantation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 230000000873 masking effect Effects 0.000 description 3
- 206010010774 Constipation Diseases 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000008266 hair spray Substances 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 210000004072 lung Anatomy 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 239000006199 nebulizer Substances 0.000 description 2
- 239000002304 perfume Substances 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005234 chemical deposition Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 238000009688 liquid atomisation Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
Definitions
- the present invention relates to an actuator member for a micro atomizer and in particular on an actuator member for a piezoelectrically operated micro-atomizer, on methods of manufacturing such an actuator member as well as a micro-atomizer using one Aktorbauglieds.
- Elements for atomizing liquid media the following abbreviated as atomizers used in many technical areas, for example the Cosmetics industry for atomizing hair sprays and perfumes, in medicine as drug sprays, with different Coating techniques for the atomization of Varnishes and adhesives, in chemistry for nebulizing liquid Reagents, as well as in the field of home automation Room humidifier.
- Much of the atomizer currently in use works by means of mechanical atomization, in which the liquid by a mechanically generated overpressure by a Valve of suitable shape and size is pressed. Thereby the medium flows, i.e. the liquid to be atomized, in small droplets usually distributed statically and forms one Liquid mist.
- the overpressure required is manual through a pumping process, for example in the case of perfume atomizers, or by using overpressure reservoirs, e.g. Propellant gas in hair sprays.
- a piezoelectric atomizer is described at a thin silicon membrane thanks to a piezoelectric ZnO layer is vibrated, whereby from the thin silicon membrane liquids are atomized.
- the atomizer described in this document works at a Vibration frequency from 80 to 86.5 kHz, the one disclosed there Atomizer droplets of widely differing diameters generated.
- DE 19802368 C1 describes a microdosing device, in which a pressure chamber is delimited on one side by a membrane is, in the pressure chamber an inlet opening and an outlet opening are provided. With a suitable control the membrane is caused to dosing sucked in fluid through the inlet opening and through the Exhaust opening is ejected.
- This microdosing device works on the basis of a displacement effect and not on the basis of capillary wave theory.
- DE 69404004 T2 describes a piezoelectric nebulizer known in which liquid using a soft Organ with capillary or felt-like structure, such as an open cell foam, on an atomizing grid, which is set in vibration becomes.
- WO-A-95/15822 describes an atomizing device based on atomization based on capillary wave theory based.
- a membrane is in Vibrated to effect atomization.
- a Liquid to be atomized is passed through openings in the membrane, which penetrate it completely, to the surface the membrane from which the liquid is atomized, fed.
- the object of the present invention is a To create micro-atomizers, on the one hand, a mass production enables and secondly the atomization of droplets, which have a defined diameter, with a enables increased efficiency, and a method for manufacturing to create such a micro atomizer.
- micro-atomizer 1 and a method of making a micro-atomizer solved according to claim 13.
- the actuator member used in the atomizer according to the invention uses the piezoelectric principle. Doing so preferably manufactured in thin film technology piezoelectric Layer for deflecting one, preferably in silicon etched thin membrane used, which results in
- Vibrations is set.
- the silicon substrate in which the membrane is formed is also a channel device formed to supply the liquid to be atomized, to ensure an essentially uniform wetting of the piezoelectric actuator opposite surface of the Serves to effect membrane.
- the actuator member of the atomizer according to the invention is preferred suitably adapted to at a frequency between 2 and 2.5 MHz to be operated, and such that by atomization droplets have a diameter between 1 and have 5 ⁇ m.
- the geometric dimensions the membrane, the hydration and the used Vibration frequency suitably adapted as an atomization parameter, to set a desired droplet size.
- the channel device can be designed such that same the liquid to be atomized from different Feeds directions to the membrane.
- the membrane can be rectangular, the channel device the liquid to be atomized over the four corners of the membrane supplies.
- a micro-atomizer according to the invention using a such an actuator member may include a bracket which the actuator member is fixed so that the inlet end fluidly connected to a liquid supply line is that the channel device with the exception of a fluid one Connection of the same with a liquid supply line and the one opposite the piezoelectric actuator Surface of the membrane sealed by the bracket is, and that in the area opposite the piezoelectric actuator Surface of the membrane an opening of the Bracket provided to eject the atomized liquid is.
- the bracket is designed such that the actuator member can be easily attached to the same, the Liquid supply line, the holder preferably in leaves in a direction opposite to the direction of ejection the atomized liquid.
- the present invention further provides a method for Manufacture of a piezoelectrically operated micro-atomizer, in which first a piezoelectric actuator on a Main surface of a semiconductor substrate is applied, whereupon the one opposite the piezoelectric actuator Main surface of the semiconductor substrate is structured, around a membrane on which the piezoelectric actuator is arranged and a channel device extending from an inlet end extends to the membrane to fix in the same.
- the actuator member is fixed to a bracket in such a way that the surface opposite the piezoelectric actuator facing the membrane of an opening in the holder is.
- the present invention thus creates an actuator member for a piezoelectrically operated micro-atomizer, the through the use of micromechanics, and in particular the Silicon technology, a very small and inexpensive system enables that manufactured in very large numbers can be. Due to the properties of the The droplet distribution, the precision, become atomizers of the volume to be atomized and thus in the case of a medical Application, the medical effectiveness significantly improved.
- the actuator member comes without the use of a Nozzle so that there are no signs of constipation can. So the system is also for a multiple Suitable use, for example, only one with liquid container connected to the liquid supply line needs to be replaced. Because of the low power requirement of the piezo drive is also the energy consumption reduced.
- Fig. 1a) is a schematic perspective view an embodiment of an actuator member shown in one in a main surface of a silicon substrate 10 Membrane 12 is formed.
- a schematic top view of the in Fig. 1a) illustrated embodiment is also in Fig. 2a) shown, with reference to the following description to Fig. 1a) and 2a) is continued.
- the atomizing surface of the membrane 12 recognizable, so that on the opposite surface the piezoelectric actuator arranged in the membrane Figures cannot be seen.
- the piezoelectric actuator is used to cause the membrane 12 to vibrate.
- a channel device 14 formed which is a supply of a to be atomized Allows liquid to the atomizing surface of membrane 12. Also in this main surface is the silicon substrate 10 a recess 16 which serves as a media inlet, intended.
- the channel device 14 provides a fluid connection between the media inlet 16 and the atomizing surface membrane 12 to provide substantially uniform wetting the atomizing surface with the one to be atomized To allow liquid.
- the channel device 14 Channel sections 14a, 14b, 14c and 14d, which are the to be atomized Liquid from the direction of the four corners of the substantially rectangular membrane 12 to the atomizing surface feed them.
- the membrane 12 by a Membrane recess is fixed using a KOH etching process was formed so that the side walls 18 of the Membrane recess with the slope to be recognized in Fig. 1a) have an angle of about 55 degrees.
- sections 14a, 14b, 14c and 14d of FIG Channel device 14 in each case in the upper region of the inclined Side surfaces 18 that the supply of the atomized Medium takes place over the inclined side surfaces 18.
- the media inlet recess 16 and the channel device 14 also by a KOH etching can be formed.
- the actuator member formed in this way is now used to build a micro-atomizer into a holder, as shown for example in Fig. 1b) is introduced.
- the bracket points 20 a receiving compartment 22 into which the actuator member is introduced and in the same in a suitable manner can be set.
- the bracket points 20 preferably protrusions 24 and 26 on the actuator member hold.
- the holder 20 is designed such that it is closed together with the actuator member Forms channels that match the atomizing surface of the Membrane 12 and the media inlet 16 fluidly connected are.
- the holder 20 preferably also has a device 28 for connecting a liquid line 29, preferably a hose, such that the liquid line 29 fluidly connected to the media inlet 16 is.
- the holder 20 also has an opening 30 which, if the actuator member is mounted in the bracket 20, arranged above the atomizing surface of the membrane 12 is to expel the atomized liquid to enable.
- the liquid line 29 is relative to the Opening 30 is preferably arranged such that the opening 30 arranged, for example, in an inhalation channel of an inhaler be no. For this purpose leaves the liquid line 29 the bracket 20 preferably opposite the opening 30, as shown in Fig. 1b).
- the opening 30 can provided with a grid in alternative embodiments be, for example, for a precisely defined Droplet size or overhead operation of the system allows.
- the actuator member shown in Fig. 1a) is preferably made made of silicon, while that shown in Fig. 1b) Bracket made of plastic, what regarding the system price is advantageous, or any other suitable Material can be made.
- the actuator member can, for example by means of anodic bonding on the holder be attached, moreover by such anodic Bonding process also a very firm, dense and stable Connection to another silicon chip is possible which in turn has suitable channels and liquid connections may contain.
- the liquid line 29 with a liquid reservoir (not shown) connected, which is preferably a Pressure tank acts, the fluid via a valve can be connected to the liquid line 29.
- the membrane 12 is vibrated by the piezoelectric actuator offset so that on the basis of capillary wave theory that on the atomizing surface of the membrane 12 Liquid is atomized. During the atomization process becomes atomizing liquid continuously supplied via the channel device 14.
- the inventive An actuator atomization can be performed Resulting in droplets whose diameter is not in one vary in large area, but their diameter in one defined area, preferred for medical technology can be kept between 1 and 5 microns.
- FIG. 2b is a schematic plan view of a channel device 34 shown as lower for a membrane 36 Size can be sufficient to ensure even wetting to effect the same with the liquid to be atomized.
- the channel device 34 is in turn fluid with a Recess 16, which defines a media inlet, connected.
- the arrangement shown in Fig. 2b) is suitable for Atomization of small volumes of fluid, while that shown in Fig. 2a) illustrated embodiment for the atomization of larger fluid volume is suitable.
- the channels 14 and 34 act in addition to the liquid supply due to the narrowing of the cross-section also as a flow restriction. At a constant outlet pressure of the liquid and through the channels made with a precise cross-section thus there is a constant flow to the piezoelectric Membrane 12 or 36 a.
- the channels according to the present invention using silicon technology can be precisely etched so that a defined supply of the liquid to the atomizing surface the membrane is possible. So can by different selected cross-sections target the microactuators desired flow rates can be set so that the atomization very precisely defined volumes is possible.
- a protective layer which is preferably made of Titanium or titanium nitride.
- FIGS. 3a) to 3e) Method for producing an actuator member according to the invention described.
- a p-silicon is preferably used as the silicon substrate 10, while the layer 40 is an n-conductive layer.
- Layer 40 later also serves as a lower electrode for driving the piezoelectric layer.
- the substrate 10 on which the implantation layer 40 is arranged is subsequently subjected to an oxidation in order to produce SiO 2 layers 42 and 44. The resulting layer composite is shown in Fig. 3a).
- An opening 48 is formed in the upper oxide layer 42 for later contacting of the implantation layer 40, see FIG. 3b).
- the lower oxide layer 44 and the silicon nitride layer 46 are, for example by photolithographic processes, structured around an opening 50 for later free etching the membrane recess from the bottom of the silicon substrate 10 here to be defined. Above this opening 50 a piezoelectric material on top oxide layer 42 52 applied to the finished device as piezoelectric actuator acts.
- the piezoelectric material can consist of AlN, PZT or ZnO, for example. Consequently the structure shown in Fig. 3c) results.
- metallizations 54 and 56 for the electrical Control of the piezoelectric element 52 the top of the structure shown in Fig. 3c), see Fig. 3d), whereupon a passivation layer 58 is applied and patterned around openings 60 and 62 to define the contacting of the metallizations 54 and 56, see Fig. 3e).
- a passivation layer 58 is applied and patterned around openings 60 and 62 to define the contacting of the metallizations 54 and 56, see Fig. 3e).
- KOH etching limited KOH etching down to the implantation layer 40, which serves as an etch stop, performed that the membrane 12 formed in the implantation layer 40 is generated.
- FIG. 3 a preferred embodiment of the inventive method for manufacturing of an actuator member, it is for Experts obviously have a different order the steps described above can be used to the structure of the actuator member according to the invention as it For example, shown in Fig. 1a) in a main surface a silicon substrate and also a piezoelectric Drive on the opposite main surface of the silicon substrate.
- the recess which defines the membrane, as well as the supply channels, the even wetting of the atomizing surface ensure the membrane is in the same main surface of a silicon substrate are formed, so that the present Invention the mass production of actuator components less Size inexpensive and with low energy consumption allows.
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- Special Spraying Apparatus (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Micromachines (AREA)
Description
- Fig. 1a)
- eine schematische perspektivische Darstellung eines Ausführungsbeispiels eines erfindungsgemäßen Aktorbauglieds;
- Fig. 1b)
- eine schematische perspektivische Darstellung einer Halterung eines erfindungsgemäßen Mikrozerstäubers;
- Fig. 2a) und 2b)
- schematische Darstellungen zur Erläuterung unterschiedlicher Ausführungsbeispiele von Kanaleinrichtungen erfindungsgemäßer Aktorbauglieder; und
- Fig. 3a) bis 3e)
- schematische Schnittansichten zur Veranschaulichung des erfindungsgemäßen Verfahrens zur Herstellung eines Aktorbauglieds.
Claims (15)
- Piezoelektrisch betriebener Kapillarwellentheorie-Mikrozerstäuber mit folgenden Merkmalen:einer in einem Halbleitersubstrat (10) gebildeten Membran (12; 36);einem auf einer Oberfläche der Membran (12; 36) angeordneten piezoelektrischen Aktor (52), um die Membran (12; 36) in Schwingungen zu versetzen; undeiner in dem Halbleitersubstrat (10) gebildeten Kanaleinrichtung (14; 34) zum Zuführen einer zu zerstäubenden Flüssigkeit von einem Einlaßende zu der dem piezoelektrischen Aktor (52) gegenüberliegenden Oberfläche der Membran (12; 36), wobei durch die Schwingungen der Membran (12; 36) die zu der Oberfläche der Membran zugeführte Flüssigkeit auf der Grundlage der Kapillarwellentheorie zerstäubt und durch einen gegenüber der Membran angeordneten Auslaß (30) ausgestossen wird, wobei die Kanaleinrichtung (14; 34) durch zumindest eine, das Substrat nicht durchdringende rillenartige Struktur gebildet ist, die in der Oberfläche des Substrats, von der die zugeführte Flüssigkeit zerstäubt wird, in dem Substrat vorgesehen ist.
- Mikrozerstäuber gemäß Anspruch 1, bei dem die Membran (12; 36) und die Kanaleinrichtung (14; 34) durch Ausnehmungen in einer ersten Hauptoberfläche des Halbleitersubstrats (10) gebildet sind.
- Mikrozerstäuber gemäß Anspruch 1 oder 2, bei dem in der ersten Hauptoberfläche des Halbleitersubstrats (10) ferner eine einen Flüssigkeitseinlaß definierende Ausnehmung (16), die mit dem Einlaßende der Kanaleinrichtung (14; 34) fluidmäßig verbunden ist, gebildet ist.
- Mikrozerstäuber gemäß einem der Ansprüche 1 bis 3, bei dem die Kanaleinrichtung (14; 34) ausgebildet ist, um eine gleichmäßige Benetzung der dem piezoelektrischen Aktor (52) gegenüberliegenden Oberfläche der Membran (12; 36) zu bewirken.
- Mikrozerstäuber gemäß einem der Ansprüche 1 bis 4, bei dem die Kanaleinrichtung (14) ausgebildet ist, um eine Zuführung einer zu zerstäubenden Flüssigkeit zu der Membran (12) aus verschiedenen Richtungen zu bewirken.
- Mikrozerstäuber gemäß Anspruch 5, bei dem die Membran (12) eine rechteckige Form aufweist, wobei die Kanaleinrichtung (14) Kanalabschnitte (14a, 14b, 14c, 14d) aufweist, um die zu zerstäubende Flüssigkeit über die vier Ecken der Membran (12) zuzuführen.
- Mikrozerstäuber gemäß einem der Ansprüche 1 bis 6, bei dem der piezoelektrische Aktor (52) die Membran (12; 36) in Schwingungen mit einer Frequenz zwischen 2 und 2,5 MHz versetzt, derart, daß die durch die Zerstäubung erzeugten Tröpfchen einen Durchmesser zwischen 1 und 5 µm besitzen.
- Mikrozerstäuber gemäß einem der Ansprüche 1 bis 7, bei dem die Kanaleinrichtung (14; 34) als definierte Flußrestriktion ausgebildet ist.
- Mikrozerstäuber gemäß einem der Ansprüche 1 bis 8, der eine Halterung (20) aufweist, an der das Halbleitersubstrat derart fixiert ist, daß
das Einlaßende fluidmäßig mit einer Flüssigkeitszuführungsleitung (29) verbunden ist;
die Kanaleinrichtung (14; 34) mit Ausnahme einer fluidmäßigen Verbindung derselben mit der Flüssigkeitszuführungsleitung (29) und der dem piezoelektrischen Aktor (52) gegenüberliegenden Oberfläche der Membran (12) durch die Halterung (20) abgedichtet ist; und
im Bereich der dem piezoelektrischen Aktor (52) gegenüberliegenden Oberfläche der Membran (12) eine Öffnung (30) der Halterung (20) zum Ausstoßen der zerstäubten Flüssigkeit vorgesehen ist. - Mikrozerstäuber gemäß Anspruch 9, bei dem die Öffnung (30) mit einem Gitter versehen ist.
- Mikrozerstäuber gemäß Anspruch 9 oder 10, bei dem die Flüssigkeitszuführungsleitung derart angeordnet ist, daß dieselbe die Halterung (20) in einer zur Ausstoßrichtung der zerstäubten Flüssigkeit entgegengesetzten Richtung verläßt.
- Mikrozerstäuber gemäß einem der Ansprüche 9 bis 11, bei dem die Halterung (20) eine als Flüssigkeitseinlaß (32) dienende Ausnehmung aufweist.
- Verfahren zum Herstellen eines piezoelektrisch betriebenen Kapillarwellentheorie-Mikrozerstäubers zum Zerstäuben einer auf eine Oberfläche einer Membran zugeführten Flüssigkeit auf der Grundlage der Kapillarwellentheorie, mit folgenden Schritten:a) Erzeugen eines Aktorbauglieds durch folgende Teilschritte:a1) Aufbringen eines piezoelektrischen Aktors (52) auf eine Hauptoberfläche eines Halbleitersubstrats (10, 40);a2) Strukturieren der dem piezoelektrischen Aktor (52) gegenüberliegenden Hauptoberfläche des Halbleitersubstrats, um die Membran (12), auf der der piezoelektrische Aktor (52) angeordnet ist, und zumindest eine Kanaleinrichtung (14; 34) in der Form einer rillenartigen, das Substrat nicht durchdringenden Struktur, die sich von einem Einlaßende zu der Membran (12; 36) erstreckt, in derselben festzulegen; undb) Fixieren des Aktorbauglieds an einer Halterung (30), so daß die dem piezoelektrischen Aktor gegenüberliegende Oberfläche der Membran einer Öffnung in der Halterung zugewandt ist.
- Verfahren gemäß Anspruch 13, bei dem im Schritt a2) ferner ein am Einlaßende der Kanaleinrichtung (14; 34) mit derselben fluidmäßig verbundener Flüssigkeitseinlaß (16) in der dem piezoelektrischen Aktor (52) gegenüberliegenden Oberfläche des Halbleitersubstrats (10, 40) strukturiert wird.
- Verfahren gemäß Anspruch 13 oder 14, bei dem die Membran (12) durch ein KOH-Ätzen gebildet wird, wobei die Kanaleinrichtung bis zu den durch das KOH-Ätzen gebildeten schrägen Seitenwänden (18) der die Membran (12) festlegenden Ausnehmung erzeugt wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19938055A DE19938055A1 (de) | 1999-08-12 | 1999-08-12 | Aktorbauglied für einen Mikrozerstäuber und Verfahren zu seiner Herstellung |
DE19938055 | 1999-08-12 | ||
PCT/EP2000/007798 WO2001012340A1 (de) | 1999-08-12 | 2000-08-10 | Aktorbauglied für einen mikrozerstäuber und verfahren zu seiner herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1200198A1 EP1200198A1 (de) | 2002-05-02 |
EP1200198B1 true EP1200198B1 (de) | 2003-01-22 |
Family
ID=7918052
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00949481A Expired - Lifetime EP1200198B1 (de) | 1999-08-12 | 2000-08-10 | Aktorbauglied für einen mikrozerstäuber und verfahren zu seiner herstellung |
Country Status (5)
Country | Link |
---|---|
US (1) | US6536682B1 (de) |
EP (1) | EP1200198B1 (de) |
JP (1) | JP3598095B2 (de) |
DE (2) | DE19938055A1 (de) |
WO (1) | WO2001012340A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW538823U (en) * | 2002-09-18 | 2003-06-21 | Kae Jyh Corp | Improved structure for percussion board of water mist |
TWI294789B (en) * | 2005-11-29 | 2008-03-21 | Ind Tech Res Inst | Droplet ejecting head |
EP1792662A1 (de) * | 2005-11-30 | 2007-06-06 | Microflow Engineering SA | Tropferspendervorrichtung |
EP1952896B1 (de) * | 2007-02-01 | 2012-11-07 | EP Systems SA | Tropfenspender |
EP2130611B1 (de) * | 2008-06-03 | 2010-11-03 | Microflow Engineering SA | Spendervorrichtung für flüchtige flüssige Tröpfchen |
CN103402907B (zh) * | 2011-01-17 | 2016-03-23 | 新加坡科技研究局 | 微流体微滴发生器 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4605167A (en) * | 1982-01-18 | 1986-08-12 | Matsushita Electric Industrial Company, Limited | Ultrasonic liquid ejecting apparatus |
US5152456A (en) * | 1989-12-12 | 1992-10-06 | Bespak, Plc | Dispensing apparatus having a perforate outlet member and a vibrating device |
EP0465229B1 (de) * | 1990-07-02 | 1994-12-28 | Seiko Epson Corporation | Mikropumpe und Verfahren zur Herstellung einer Mikropumpe |
AU9089591A (en) * | 1990-12-17 | 1992-07-22 | Minnesota Mining And Manufacturing Company | Inhaler |
WO1993010910A1 (en) * | 1991-12-04 | 1993-06-10 | The Technology Partnership Limited | Fluid droplet production apparatus and method |
FR2705911B1 (fr) * | 1993-06-02 | 1995-08-11 | Oreal | Appareil de nébulisation piézoélectrique. |
GB9412669D0 (en) * | 1994-06-23 | 1994-08-10 | The Technology Partnership Plc | Liquid spray apparatus |
BR9408281A (pt) | 1993-12-09 | 1996-12-17 | The Technology Partnership Plc | Aparelho pulverizador de goticulas de liquido e processo de atomizar um liquido |
US5685491A (en) * | 1995-01-11 | 1997-11-11 | Amtx, Inc. | Electroformed multilayer spray director and a process for the preparation thereof |
DE19802368C1 (de) * | 1998-01-22 | 1999-08-05 | Hahn Schickard Ges | Mikrodosiervorrichtung |
-
1999
- 1999-08-12 DE DE19938055A patent/DE19938055A1/de not_active Withdrawn
-
2000
- 2000-08-10 EP EP00949481A patent/EP1200198B1/de not_active Expired - Lifetime
- 2000-08-10 US US10/049,195 patent/US6536682B1/en not_active Expired - Fee Related
- 2000-08-10 JP JP2001516676A patent/JP3598095B2/ja not_active Expired - Fee Related
- 2000-08-10 DE DE50001149T patent/DE50001149D1/de not_active Expired - Lifetime
- 2000-08-10 WO PCT/EP2000/007798 patent/WO2001012340A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
EP1200198A1 (de) | 2002-05-02 |
JP2003507168A (ja) | 2003-02-25 |
WO2001012340A1 (de) | 2001-02-22 |
DE19938055A1 (de) | 2001-03-15 |
DE50001149D1 (de) | 2003-02-27 |
US6536682B1 (en) | 2003-03-25 |
JP3598095B2 (ja) | 2004-12-08 |
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