WO1995018991A1 - Verfahren zum stufenweisen aufbau von mikrostrukturkörpern und damit hergestellter mikrostrukturkörper - Google Patents
Verfahren zum stufenweisen aufbau von mikrostrukturkörpern und damit hergestellter mikrostrukturkörper Download PDFInfo
- Publication number
- WO1995018991A1 WO1995018991A1 PCT/EP1994/003746 EP9403746W WO9518991A1 WO 1995018991 A1 WO1995018991 A1 WO 1995018991A1 EP 9403746 W EP9403746 W EP 9403746W WO 9518991 A1 WO9518991 A1 WO 9518991A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- layers
- radiation
- sensitive
- irradiated
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K99/00—Subject matter not provided for in other groups of this subclass
- F16K99/0001—Microvalves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/141—Processes of additive manufacturing using only solid materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/188—Processes of additive manufacturing involving additional operations performed on the added layers, e.g. smoothing, grinding or thickness control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
- F15C5/00—Manufacture of fluid circuit elements; Manufacture of assemblages of such elements integrated circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K99/00—Subject matter not provided for in other groups of this subclass
- F16K99/0001—Microvalves
- F16K99/0003—Constructional types of microvalves; Details of the cutting-off member
- F16K99/0005—Lift valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K99/00—Subject matter not provided for in other groups of this subclass
- F16K99/0001—Microvalves
- F16K99/0003—Constructional types of microvalves; Details of the cutting-off member
- F16K99/0015—Diaphragm or membrane valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K99/00—Subject matter not provided for in other groups of this subclass
- F16K99/0001—Microvalves
- F16K99/0034—Operating means specially adapted for microvalves
- F16K99/0055—Operating means specially adapted for microvalves actuated by fluids
- F16K99/0059—Operating means specially adapted for microvalves actuated by fluids actuated by a pilot fluid
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/0035—Multiple processes, e.g. applying a further resist layer on an already in a previously step, processed pattern or textured surface
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2022—Multi-step exposure, e.g. hybrid; backside exposure; blanket exposure, e.g. for image reversal; edge exposure, e.g. for edge bead removal; corrective exposure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K99/00—Subject matter not provided for in other groups of this subclass
- F16K2099/0073—Fabrication methods specifically adapted for microvalves
- F16K2099/0074—Fabrication methods specifically adapted for microvalves using photolithography, e.g. etching
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K99/00—Subject matter not provided for in other groups of this subclass
- F16K2099/0073—Fabrication methods specifically adapted for microvalves
- F16K2099/008—Multi-layer fabrications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K99/00—Subject matter not provided for in other groups of this subclass
- F16K2099/0082—Microvalves adapted for a particular use
- F16K2099/0086—Medical applications
Definitions
- the invention relates to a method for the gradual construction of microstructure bodies using lithographic methods according to the preamble of claim 1 and to a microstructure body produced according to it.
- the object of the invention is to simplify individual treatment steps in the generic method for the gradual build-up of microstructure bodies by means of lithographic methods and to enable a broad spectrum of applications for the microstructure bodies to be produced.
- metallic barrier layers By metallizing the entire surface of a layer after each irradiation of this layer, the rays with which the next layer is irradiated are reflected or absorbed by the metal layer applied in this way. This avoids that already irradiated layers are exposed again and z. B. by beam divergences or by tolerances in mask positioning undesired areas not to be irradiated.
- These metallic barrier layers also enable the production of microstructures with a cross section that can be changed in stages. The cross sections can also be shifted from step to step so as to overlap, so that oblique channels are formed, even in the form of branches.
- the use of UV light from commercially available, inexpensive UV sources is made possible without having to compromise on a high aspect ratio with lateral dimensions in the ⁇ m range.
- the metallization is carried out using known methods, e.g. B. by Auf ⁇ vaporization.
- the layer-by-layer development and etching can be carried out simultaneously from two sides, as a result of which the production time with respect to these steps is correspondingly reduced.
- the microstructure body consisting essentially of plastic can also be used in a known manner as a mold, the cavities of which are galvanically filled with metal using a metallic substrate plate as an electrode.
- Figures la, lb and lc illustrate schematically and on a greatly enlarged scale the manufacturing according to the invention
- FIG. 2 shows an SEM image of a microstructure body with a step-shaped opening
- FIG 3 shows an example of a microstructure body produced according to the invention in the form of a pressure-controlled microvalve.
- Figure la is on a substrate 1, z. B. a Metall ⁇ plate, a radiation-sensitive layer 2a applied.
- This layer 2a is irradiated with UV light via a structured mask 3, which is adjusted relative to the substrate 1 (see arrows).
- the structures 3a of the mask 3 correspond to the cross section to be produced of the microstructure body or of the microstructure body layer concerned. If UV light is used as the radiation source, the UV light-sensitive layer 2a should not be thicker than 80 ⁇ m.
- the free surface 4a of the layer 2a facing the mask 3 is metallized. For example, a metal layer 5a, for example a few hundred nanometers thick.
- a further radiation-sensitive layer 2b is then applied, irradiated via the mask 3 (see FIG. 1b) and metallized on the free surface 4b, with which a metal layer 5b is formed.
- This step-by-step procedure is continued until the stacked layers 2b, c, d, e together with the metallic intermediate layers 5a, b, c, d (see FIG. 1c) have the desired height of the microstructure body to be produced.
- the irradiated areas of the uppermost layer 2e are then dissolved and removed with a liquid developer and the areas below these areas are etched away partially exposed metal layer 5d.
- This alternating development and etching is now continued from top to bottom in the subsequent layers 2d / 5c, 2c / 5b, 2b / 5a, 2a, so that a microstructure body 6 is formed on the base plate 1, in which the cross sections correspond to the microstructures of the lateral extent of the mask structures 3a (FIG. 1c). After each development and etching, it is rinsed with water.
- the individual layers 2a to 2e may only be so thick that inevitable divergences of the radiation do not result in any loss of quality, i. H. exceed the specified tolerances.
- a particular advantage of the method is that the continuous, metallic intermediate layers 5a to 5d form a barrier layer which absorbs or reflects the radiation, with respect to the radiation-sensitive layers 2a to 2d underneath. As a result, radiation divergences or deviations due to adjustment tolerances of the mask can no longer have an effect on the unirradiated areas of the radiation-sensitive layers located under the respective metallic barrier layer.
- the metallic intermediate layers also make it possible in a particularly simple manner to use different masks to produce microstructure bodies whose microstructures have different cross sections in stages. Instead of metal, it is also possible to use other substances which absorb UV light and which can be removed selectively with respect to the radiation-sensitive plastic.
- FIG. 2 shows an SEM image of a two-layer microstructure produced with UV radiation, for the manufacture of which two masks with different absorber structures were used.
- the side walls of the two layers are inclined.
- the microstructure body produced by the method according to the invention can be used directly for specific purposes, for example for B. as a microporous filter.
- a metallic object is required as the finished microstructure body, e.g. B. a heat exchanger equipped with microtubes, the spaces between the microstructures are to be galvanically filled with metal in a known manner, the metallic base plate 1 serving as an electrode. After filling with metal, the aforementioned layers are removed.
- Fig. 3 shows a microvalve, the manufacturing process of which is described below.
- one or more layers 30a are irradiated for the purpose of later making an opening 30b.
- a second layer 31a is used for later production of a cavity 31b connected to the opening 30b after the layer 30a has been metallized beforehand.
- a metal layer 31c is applied to the layer 31a, which is so thick that, as can be seen from FIG. 3, it can take over the function of a pressure-resistant membrane.
- the next layer 32 is irradiated from two different directions so that after the subsequent development, in addition to a cavity 32a with an opening 32b on the membrane 31c, a valve cone 32c which is made of plastic, ie the radiation-sensitive material, remains.
- a layer 33 adjoins the layer 32, the recess 33a of which corresponds to the shape of the valve cone 32c.
- a cover plate 34 with a valve opening 34a forms the upper end.
- the irradiated areas 30b, 31b, or 32a, 33a, 34a are developed and the metal layers in between are etched from two opposite sides, based on FIG. 3, ie from below and from above.
- the metallic membrane 31c is left between the cavities 31b and 32a.
- Flowing medium entering opening 32b can be controlled.
- a suitable plastic layer can also be left as a membrane in a corresponding manner. Micro valves of this type are required, for example, in medical technology.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95900717A EP0797790A1 (de) | 1994-01-07 | 1994-11-11 | Verfahren zum stufenweisen aufbau von mikrostrukturkörpern und damit hergestellter mikrostrukturkörper |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4400315.3 | 1994-01-07 | ||
DE4400315A DE4400315C1 (de) | 1994-01-07 | 1994-01-07 | Verfahren zum stufenweisen Aufbau von Mikrostrukturkörpern und damit hergestellter Mikrostrukturkörper |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995018991A1 true WO1995018991A1 (de) | 1995-07-13 |
Family
ID=6507566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1994/003746 WO1995018991A1 (de) | 1994-01-07 | 1994-11-11 | Verfahren zum stufenweisen aufbau von mikrostrukturkörpern und damit hergestellter mikrostrukturkörper |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0797790A1 (de) |
DE (1) | DE4400315C1 (de) |
WO (1) | WO1995018991A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2291207B (en) * | 1994-07-14 | 1998-03-25 | Hyundai Electronics Ind | Method for forming resist patterns |
CN102555217A (zh) * | 2010-08-25 | 2012-07-11 | 索尼公司 | 结构制造方法和结构 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW374211B (en) * | 1995-08-03 | 1999-11-11 | Ibm | Machine structures fabricated of multiple microstructure layers |
DE19534137A1 (de) * | 1995-09-14 | 1997-03-20 | Univ Ilmenau Tech | Mikro-Ventilanordnung |
US5645977A (en) * | 1995-09-22 | 1997-07-08 | Industrial Technology Research Institute | Method of making molds for manufacturing multiple-lead microstructures |
DE19546181C2 (de) * | 1995-12-11 | 1998-11-26 | Fraunhofer Ges Forschung | Mikroventil |
US5783452A (en) * | 1996-02-02 | 1998-07-21 | University Of Washington | Covered microchannels and the microfabrication thereof |
WO1998000296A1 (de) * | 1996-06-28 | 1998-01-08 | Pelikan Produktions Ag | Tintenstrahldruckkopf mit komponenten aus siliciumorganischen verbindungen |
US6312085B1 (en) | 1997-06-26 | 2001-11-06 | Pelikan Produktions Ag | Ink jet printing head with elements made of organosilicic compounds |
DE19727552C2 (de) * | 1997-06-28 | 2000-02-03 | Festo Ag & Co | Mikroventilanordnung in Mehrschichtaufbau |
DE19955975A1 (de) * | 1999-11-19 | 2001-05-23 | Inst Mikrotechnik Mainz Gmbh | Lithographisches Verfahren zur Herstellung von Mikrobauteilen |
DE102004008008B4 (de) * | 2003-12-23 | 2016-02-04 | Robert Bosch Gmbh | Integrierter Flusssensor zum Messen eines Fluidflusses und Verfahren zum Herstellen eines Flusssensors |
EP2712722A1 (de) | 2012-09-28 | 2014-04-02 | Siemens Aktiengesellschaft | Teil und Herstellungsverfahren |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57109331A (en) * | 1980-12-26 | 1982-07-07 | Nippon Telegr & Teleph Corp <Ntt> | Formation of resist pattern |
JPH0634015A (ja) * | 1992-07-10 | 1994-02-08 | Toyota Motor Corp | ロックアップクラッチ付き流体伝動装置 |
EP0607680A2 (de) * | 1992-12-22 | 1994-07-27 | Wisconsin Alumni Research Foundation | Verfahren zur Herstellung von Mikrostrukturen unter Verwendung einer vorgefertigten Photolack-Schicht |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2933570C3 (de) * | 1979-08-18 | 1982-02-25 | Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe | Verfahren zum Herstellen von Trenndüsenelementen |
-
1994
- 1994-01-07 DE DE4400315A patent/DE4400315C1/de not_active Expired - Fee Related
- 1994-11-11 EP EP95900717A patent/EP0797790A1/de not_active Ceased
- 1994-11-11 WO PCT/EP1994/003746 patent/WO1995018991A1/de not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57109331A (en) * | 1980-12-26 | 1982-07-07 | Nippon Telegr & Teleph Corp <Ntt> | Formation of resist pattern |
JPH0634015A (ja) * | 1992-07-10 | 1994-02-08 | Toyota Motor Corp | ロックアップクラッチ付き流体伝動装置 |
EP0607680A2 (de) * | 1992-12-22 | 1994-07-27 | Wisconsin Alumni Research Foundation | Verfahren zur Herstellung von Mikrostrukturen unter Verwendung einer vorgefertigten Photolack-Schicht |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 6, no. 200 (E - 135) * |
PATENT ABSTRACTS OF JAPAN vol. 9, no. 154 (E - 325) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2291207B (en) * | 1994-07-14 | 1998-03-25 | Hyundai Electronics Ind | Method for forming resist patterns |
US5989788A (en) * | 1994-07-14 | 1999-11-23 | Hyundai Electronics Industries Co., Ltd. | Method for forming resist patterns having two photoresist layers and an intermediate layer |
CN102555217A (zh) * | 2010-08-25 | 2012-07-11 | 索尼公司 | 结构制造方法和结构 |
Also Published As
Publication number | Publication date |
---|---|
DE4400315C1 (de) | 1995-01-12 |
EP0797790A1 (de) | 1997-10-01 |
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