WO2003067241A2 - Gas sensor and method for producing the same - Google Patents
Gas sensor and method for producing the same Download PDFInfo
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- WO2003067241A2 WO2003067241A2 PCT/EP2003/001118 EP0301118W WO03067241A2 WO 2003067241 A2 WO2003067241 A2 WO 2003067241A2 EP 0301118 W EP0301118 W EP 0301118W WO 03067241 A2 WO03067241 A2 WO 03067241A2
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- cover
- gas
- sensor
- wafer
- gas sensor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
Definitions
- the invention relates to a gas sensor with at least one sensor region, which is formed by a gas-sensitive material applied to a substrate, and to a method for producing such sensors.
- the sensor materials of gas sensors are usually sensitive to moisture. They should only be used in an appropriately protected environment.
- the production of a large number of such sensors by applying the materials to an afer is also only possible using special techniques for separating the individual sensors from the common wafer.
- the standard methods used for dicing mostly use water that wets the wafer during the dicing process and damages or destroys the gas-sensitive layer. These methods are therefore not directly applicable here.
- the present invention has for its object to provide a gas sensor that can also be used in a moisture-laden environment, and to propose a rational, inexpensive method for its production.
- the object is achieved with a gas sensor having at least one sensor area, which is formed by a gas-sensitive material applied to a substrate, which is characterized in accordance with the invention in that at least the sensor area or areas are covered by a gas-permeable but liquid-impermeable cover.
- the cover can be a diffusion filter, for example made of PTFE, or a plastic film.
- the cover can be formed from an embossed filter paper. This enables particularly cost-effective production.
- the cover can additionally be covered with a plastic film which can be removed or destroyed before the sensor is used.
- a plastic film can be used for this purpose, the adhesion of which can be destroyed by UV light.
- the method according to the invention for producing gas sensors is characterized in that a multiplicity of sensor regions are applied to a wafer before a gas-permeable but liquid-impermeable but liquid-impermeable cover which has been applied or embossed is applied and then the individual gas sensors are removed from the Wafer package can be cut out.
- a lattice frame can first be placed on the wafer for support in such a way that the sensor surface rich and possibly existing contact points are located in the spaces between the grids.
- liquid-impermeable cover Thanks to the liquid-impermeable cover, it is now possible to use standard methods to separate the sensors. The otherwise usually used scribing and breaking of the wafer package can now be dispensed with.
- the wafer can also be applied to a slotted carrier through which needles can be passed from the rear after being separated for piercing the individual gas sensors.
- the slots in the carrier also ensure pressure equalization when the wafer and the carrier are bonded and during operation.
- a plastic film can also be applied to the cover.
- the cover itself can also be made in different ways.
- it can itself be a plastic film.
- it can be made by embossing diffusion filter paper.
- FIG. 1 shows a schematic illustration of a manufacturing method according to the invention for manufacturing the gas sensor from FIG. 2 with a liquid-impermeable cover applied to a lattice frame; 2 shows a partially sectioned illustration of a gas sensor;
- FIG. 3 shows a partially sectioned illustration of a second gas sensor
- Fig. 4 is a partially sectioned illustration of a gas sensor with several sensor areas.
- FIG. 1 shows a manufacturing method for manufacturing the gas sensor 10 shown in FIG. 2, which has a sensor region 12 arranged on a substrate 11 and four contacts 13.
- the sensor 10 is provided on its upper side with a liquid-impermeable but gas-permeable cover 14.
- a support frame 15 serves to support the flat cover 14.
- the substrate 11 rests on a support 16 which is provided with slots 17 in its surface.
- a multiplicity of sensor regions are applied to a wafer 11, which forms the substrate.
- the individual sensor areas are indicated as points in FIG. 1.
- the wafer 11 is applied with a carrier 16 which has slots 17 in its surface.
- a carrier frame 15 is placed in such a way that the sensor areas 12 (FIG. 2) and the contacts 13 come to rest in the openings 18 in the grating frame 15.
- the carrier frame 15 serves as a support for a filter paper 14 and / or a protective film which forms a liquid-tight but gas-permeable cover.
- the filter paper 14 and / or the film have cutouts which allow access to the contact points 13.
- the wafer package 20 shown in FIG. 1 is produced.
- ket 20 can now be applied to adhesive film for further processing (bluetape).
- the individual gas sensors 10 can then be cut out of this package 20 by standard separation methods (wafer saw) and lifted out for further processing, for example, by means of needles passed through the back of the adhesive film.
- FIG. 3 shows an alternative embodiment of a gas sensor 30 with a substrate 31 and a sensor area 32, which are glued onto a circuit board 33.
- the entire substrate 31 with the electrical contacts is covered here by a cover 34, the cover 34 being an embossed diffusion filter paper which is fixed by a ring edge 35, for example by an annular globtop adhesive.
- the cover 14 could also be formed from an embossed filter paper.
- the frame support 15 for the cover 14 could then be omitted.
- Such embossed filter paper can of course also be placed on the wafer 11 according to FIG. 1. There, too, it would have the advantage that no lattice frame 15 would have to be put on.
- FIG. 4 shows a gas sensor 40 with a plurality of substrates 41, each of which is provided with a sensor area, which can be differently sensitive.
- the sensor 40 can thus be used to detect different gases. All of the individual substrates 41 are placed on a common carrier 42 and covered by a common cover 44 towards the top. The cover 44 is held by a frame 43 on the carrier 42.
- the covers 14, 34 and 44 can additionally be provided with a film which ensures even better protection of the sensor against moisture.
- This film can be used before the sensors 10, 30, 40 are subtracted.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
Description
Gassensor und Verfahren zu seiner Herstellung Gas sensor and method for its manufacture
B e s c h r e i b u n gDescription
Die Erfindung betrifft einen Gassensor mit mindestens einem Sensorbereich, der von einem auf ein Substrat aufgebrachten, gassensitiven Material gebildet ist, sowie ein Verfahren zur Herstellung solcher Sensoren.The invention relates to a gas sensor with at least one sensor region, which is formed by a gas-sensitive material applied to a substrate, and to a method for producing such sensors.
Die Sensormaterialien von Gassensoren sind in aller Regel feuchtigkeitsempfindlich. Sie sollten nur in einer entsprechend gegen Feuchtigkeit geschützten Umgebung eingesetzt werden. Auch die Herstellung einer Vielzahl solcher Sensoren durch Aufbringen der Materialien auf einem afer ist nur unter Anwendung von Spezialtechniken zum Vereinzeln der einzelnen Sensoren aus dem gemeinsamen Wafer möglich. Die standardmäßig zum Vereinzeln eingesetzten Verfahren verwenden meist Wasser, das beim Vereinzelungsvorgang den Wafer benetzt und die gas- sensitive Schicht schädigt bzw. zerstört. Diese Verfahren sind somit hier nicht direkt anwendbar. Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen Gassensor zu schaffen, der auch in feuchtigkeitsbehafteter Umgebung einsetzbar ist, sowie ein rationelles, kostengünstiges Verfahren zu seiner Herstellung vorzuschlagen.The sensor materials of gas sensors are usually sensitive to moisture. They should only be used in an appropriately protected environment. The production of a large number of such sensors by applying the materials to an afer is also only possible using special techniques for separating the individual sensors from the common wafer. The standard methods used for dicing mostly use water that wets the wafer during the dicing process and damages or destroys the gas-sensitive layer. These methods are therefore not directly applicable here. The present invention has for its object to provide a gas sensor that can also be used in a moisture-laden environment, and to propose a rational, inexpensive method for its production.
Die Aufgabe wird mit einem Gassensor mit mindestens einem Sensorbereich, der von einem auf ein Substrat aufgebrachten, gassensitiven Material gebildet ist, gelöst, der erfindungsgemäß dadurch gekennzeichnet ist, dass mindestens der oder die Sensorbereiche von einer gasdurchlässigen, aber flüssigkeitsundurchlässigen Abdeckung überdeckt sind. Durch diese Abdeckung kann das Eindringen von Feuchtigkeit nicht mehr zur Zerstörung des Gassensors führen. Die Abdeckung kann dabei ein Diffusionsfilter, beispielsweise aus PTFE, oder eine Kunststofffolie sein. Insbesondere lässt sich die Abdeckung aus einem geprägten Filterpapier formen. Damit ist eine besonders kostengünstige Herstellung möglich.The object is achieved with a gas sensor having at least one sensor area, which is formed by a gas-sensitive material applied to a substrate, which is characterized in accordance with the invention in that at least the sensor area or areas are covered by a gas-permeable but liquid-impermeable cover. With this cover, the penetration of moisture can no longer lead to the destruction of the gas sensor. The cover can be a diffusion filter, for example made of PTFE, or a plastic film. In particular, the cover can be formed from an embossed filter paper. This enables particularly cost-effective production.
Zur weiteren Erhöhung des Schutzes des Gassensors vor dem Eindringen von Flüssigkeit oder Schmutz kann die Abdeckung zusätzlich mit einer Kunststofffolie überzogen sein, die vor Einsatz des Sensors abziehbar oder zerstörbar ist. Beispielsweise lässt sich hierfür eine Kunststofffolie einsetzen, deren Haftung durch UV-Licht zerstörbar ist .To further increase the protection of the gas sensor against the ingress of liquid or dirt, the cover can additionally be covered with a plastic film which can be removed or destroyed before the sensor is used. For example, a plastic film can be used for this purpose, the adhesion of which can be destroyed by UV light.
Das erfindungsgemäße Verfahren zur Herstellung von Gassensoren ist dadurch gekennzeichnet, dass eine Vielzahl von Sensorbereichen auf einen Wafer aufgebracht werden, bevor eine auf einen Gitterrahmen aufgebrachte oder geprägte gasdurchlässige, aber flüssigkeitsundurchlässige Abdeckung aufgebracht wird und anschließend die einzelnen Gassensoren mittels Standard-Wafer- sägen aus dem Waferpaket ausgeschnitten werden. Für die Abdeckung kann auch zuerst zur Abstützung ein Gitterrahmen auf den Wafer derart aufgesetzt werden, dass sich die Sensorbe- reiche und ggf. vorhandene Kontaktierungspunkte in den Gitterzwischenräumen befinden.The method according to the invention for producing gas sensors is characterized in that a multiplicity of sensor regions are applied to a wafer before a gas-permeable but liquid-impermeable but liquid-impermeable cover which has been applied or embossed is applied and then the individual gas sensors are removed from the Wafer package can be cut out. For the cover, a lattice frame can first be placed on the wafer for support in such a way that the sensor surface rich and possibly existing contact points are located in the spaces between the grids.
Durch die flüssigkeitsundurchlässige Abdeckung ist es nun möglich, zum Vereinzeln der Sensoren Standardmethoden einzusetzen. Auf das ansonsten in der Regel eingesetzte Ritzen und Brechen des Waferpakets kann jetzt verzichtet werden.Thanks to the liquid-impermeable cover, it is now possible to use standard methods to separate the sensors. The otherwise usually used scribing and breaking of the wafer package can now be dispensed with.
Zur Erhöhung der Stabilität und zur weiteren vereinfachten Verarbeitung kann der Wafer auch auf einen geschlitzten Träger aufgebracht werden, durch den von der Rückseite her nach dem Vereinzeln Nadeln zum Ausstechen der einzelnen Gassensoren hindurchführbar sind. Die Schlitze in dem Träger sorgen des Weiteren für einen Druckausgleich beim Verkleben des Wafers und des Trägers sowie im Betrieb.In order to increase the stability and for further simplified processing, the wafer can also be applied to a slotted carrier through which needles can be passed from the rear after being separated for piercing the individual gas sensors. The slots in the carrier also ensure pressure equalization when the wafer and the carrier are bonded and during operation.
Sollen die Sensoren ganz besonders geschützt werden, z. B. zur Lagerung oder zum Transport, so kann auf die Abdeckung zusätzlich noch eine Kunststofffolie aufgebracht werden. Die Abdeckung selbst lässt sich ebenfalls auf verschiedene Arten herstellen. Sie kann beispielsweise selbst eine Kunststoff- folie sein. Bei einer bevorzugten Ausführungsform kann sie durch Prägen eines Diffusionsfilterpapiers hergestellt werden.Should the sensors be particularly protected, e.g. B. for storage or transportation, a plastic film can also be applied to the cover. The cover itself can also be made in different ways. For example, it can itself be a plastic film. In a preferred embodiment, it can be made by embossing diffusion filter paper.
Nachfolgend werden anhand der Zeichnung ein erfindungsgemäßes Fertigungsverfahren sowie unterschiedliche, erfindungsgemäße Gassensoren näher beschrieben.A manufacturing method according to the invention and different gas sensors according to the invention are described in more detail below with reference to the drawing.
Es zeigen:Show it:
Fig. 1 eine schematische Darstellung eines erfindungsgemäßen Herstellungsverfahrens zur Herstellung des Gassensors aus Fig. 2 mit einer auf einen Gitterrahmen aufgebrachten flüssigkeitsundurchlässigen Abdeckung; Fig. 2 eine teilweise geschnittene Darstellung eines Gassensors ;1 shows a schematic illustration of a manufacturing method according to the invention for manufacturing the gas sensor from FIG. 2 with a liquid-impermeable cover applied to a lattice frame; 2 shows a partially sectioned illustration of a gas sensor;
Fig. 3 eine teilweise geschnittene Darstellung eines zweiten Gassensors;3 shows a partially sectioned illustration of a second gas sensor;
Fig. 4 eine teilweise geschnittene Darstellung eines Gassensors mit mehreren Sensorbereichen.Fig. 4 is a partially sectioned illustration of a gas sensor with several sensor areas.
Fig. 1 zeigt ein Herstellungsverfahren zur Herstellung des in Fig. 2 gezeigten Gassensors 10, der einen auf einem Substrat 11 angeordneten Sensorbereich 12 sowie vier Kontakte 13 aufweist. Der Sensor 10 ist auf seiner oberen Seite mit einer flüssigkeitsundurchlässigen, aber gasdurchlässigen Abdeckung 14 versehen. Zur Abstützung der flachen Abdeckung 14 dient ein Trägerrahmen 15. Das Substrat 11 ruht auf einem Träger 16, der mit Schlitzen 17 in seiner Oberfläche versehen ist .FIG. 1 shows a manufacturing method for manufacturing the gas sensor 10 shown in FIG. 2, which has a sensor region 12 arranged on a substrate 11 and four contacts 13. The sensor 10 is provided on its upper side with a liquid-impermeable but gas-permeable cover 14. A support frame 15 serves to support the flat cover 14. The substrate 11 rests on a support 16 which is provided with slots 17 in its surface.
Zur Herstellung des Sensors 10 gemäß Fig. 2 werden eine Vielzahl von Sensorbereichen auf einem Wafer 11, der das Substrat bildet, aufgebracht. In Fig. 1 sind dabei die einzelnen Sensorbereiche als Punkte angedeutet. Der Wafer 11 wird mit einem Träger 16, der Schlitze 17 in seiner Oberfläche aufweist, aufgebracht . Auf der anderen Seite des Wafers 11 mit den Sensorbereichen wird ein Trägerrahmen 15 so aufgesetzt, dass in den Durchbrechungen 18 des Gitterrahmens 15 die Sensorbereiche 12 (Fig. 2) und die Kontakte 13 zu liegen kommen. Der Trägerrahmen 15 dient als Auflage für ein Filterpapier 14 und/oder eine Schutzfolie, die eine flüssigkeitsdichte, aber gasdurchlässige Abdeckung bildet. Das Filterpapier 14 und/oder die Folie haben Aussparungen, die den Zugang zu den Kontakt- punkten 13 erlauben. Nach dem Zusammenfügen der vier Schichten entsteht das in Fig. 1 gezeigte Waferpaket 20. Dieses Waferpa- ket 20 kann nun zur weiteren Verarbeitung auf Klebefolie aufgebracht werden (Bluetape) . Aus diesem Paket 20 können anschließend durch Standard-Vereinzelungsmethoden (Wafersäge) die einzelnen Gassensoren 10 herausgeschnitten und beispielsweise mittels durch die Rückseite der Klebefolie hindurchgeführte Nadeln zur weiteren Verarbeitung herausgehoben werden.To produce the sensor 10 according to FIG. 2, a multiplicity of sensor regions are applied to a wafer 11, which forms the substrate. The individual sensor areas are indicated as points in FIG. 1. The wafer 11 is applied with a carrier 16 which has slots 17 in its surface. On the other side of the wafer 11 with the sensor areas, a carrier frame 15 is placed in such a way that the sensor areas 12 (FIG. 2) and the contacts 13 come to rest in the openings 18 in the grating frame 15. The carrier frame 15 serves as a support for a filter paper 14 and / or a protective film which forms a liquid-tight but gas-permeable cover. The filter paper 14 and / or the film have cutouts which allow access to the contact points 13. After the four layers have been joined together, the wafer package 20 shown in FIG. 1 is produced. ket 20 can now be applied to adhesive film for further processing (bluetape). The individual gas sensors 10 can then be cut out of this package 20 by standard separation methods (wafer saw) and lifted out for further processing, for example, by means of needles passed through the back of the adhesive film.
Fig. 3 zeigt eine alternative Ausgestaltung eines Gassensors 30 mit einem Substrat 31 und einem Sensorbereich 32, die auf eine Platine 33 aufgeklebt sind. Das gesamte Substrat 31 mit den elektrischen Kontaktierungen wird hier von einer Abdeckung 34 überdeckt, wobei die Abdeckung 34 ein geprägtes Diffusionsfilterpapier ist, das durch einen Ringrand 35, beispielsweise durch einen ringförmig geführten Globtop-Kleber, fixiert wird. Auch beim Sensor 10 aus Fig. 2 könnte die Abdeckung 14 von einem geprägten Filterpapier gebildet werden. Es könnte dann der Rahmenträger 15 für die Abdeckung 14 entfallen. Ein solches geprägtes Filterpapier lässt sich selbstverständlich auch auf den Wafer 11 gemäß Fig. 1 aufsetzen. Auch dort hätte es den Vorteil, dass kein Gitterrahmen 15 aufgesetzt werden müsste.FIG. 3 shows an alternative embodiment of a gas sensor 30 with a substrate 31 and a sensor area 32, which are glued onto a circuit board 33. The entire substrate 31 with the electrical contacts is covered here by a cover 34, the cover 34 being an embossed diffusion filter paper which is fixed by a ring edge 35, for example by an annular globtop adhesive. In the sensor 10 from FIG. 2, the cover 14 could also be formed from an embossed filter paper. The frame support 15 for the cover 14 could then be omitted. Such embossed filter paper can of course also be placed on the wafer 11 according to FIG. 1. There, too, it would have the advantage that no lattice frame 15 would have to be put on.
Fig. 4 zeigt einen Gassensor 40 mit mehreren Substraten 41, die jeweils mit einem Sensorbereich, die unterschiedlich sensitiv sein können, versehen sind. Der Sensor 40 kann somit zur Detektion unterschiedlicher Gase eingesetzt werden. Sämtliche Einzelsubstrate 41 sind auf einem gemeinsamen Träger 42 aufgesetzt und durch eine gemeinsame Abdeckung 44 nach oben hin abgedeckt. Die Abdeckung 44 wird von einem Rahmen 43 auf dem Träger 42 gehalten.FIG. 4 shows a gas sensor 40 with a plurality of substrates 41, each of which is provided with a sensor area, which can be differently sensitive. The sensor 40 can thus be used to detect different gases. All of the individual substrates 41 are placed on a common carrier 42 and covered by a common cover 44 towards the top. The cover 44 is held by a frame 43 on the carrier 42.
Bei allen Sensoren 10, 30 und 40 können die Abdeckungen 14, 34 und 44 zusätzlich noch mit einer Folie versehen sein, die einen noch besseren Schutz des Sensors vor Feuchtigkeit gewährleistet. Diese Folie kann vor Gebrauch der Sensoren 10, 30, 40 abgezogen werden. Es ist jedoch auch möglich, eine mit einer beispielsweise durch UV-Licht zerstörbaren Klebeschicht versehene Folie einzusetzen und den Sensor vor Gebrauch mit UV-Licht zur Zerstörung der Klebeschicht der Folie zu bestrahlen. With all sensors 10, 30 and 40, the covers 14, 34 and 44 can additionally be provided with a film which ensures even better protection of the sensor against moisture. This film can be used before the sensors 10, 30, 40 are subtracted. However, it is also possible to use a film provided, for example, with an adhesive layer which can be destroyed by UV light, and to irradiate the sensor with UV light before use in order to destroy the adhesive layer of the film.
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03704543A EP1472526A2 (en) | 2002-02-05 | 2003-02-05 | Gas sensor and method for producing the same |
| AU2003206838A AU2003206838A1 (en) | 2002-02-05 | 2003-02-05 | Gas sensor and method for producing the same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2002104458 DE10204458A1 (en) | 2002-02-05 | 2002-02-05 | gas sensor |
| DE10204458.9 | 2002-02-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2003067241A2 true WO2003067241A2 (en) | 2003-08-14 |
| WO2003067241A3 WO2003067241A3 (en) | 2004-03-11 |
Family
ID=27588331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2003/001118 Ceased WO2003067241A2 (en) | 2002-02-05 | 2003-02-05 | Gas sensor and method for producing the same |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1472526A2 (en) |
| AU (1) | AU2003206838A1 (en) |
| DE (1) | DE10204458A1 (en) |
| WO (1) | WO2003067241A2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2391622A (en) * | 2002-07-31 | 2004-02-11 | Amgas Ltd | Protecting gas sensors from condensation |
| GB2422432A (en) * | 2005-01-22 | 2006-07-26 | Draeger Safety Ag & Co Kgaa | Gas sensor |
| EP1950281A1 (en) * | 2007-01-29 | 2008-07-30 | Fp Sensor Systems GmbH | Measuring device for determining the activity of a fermentation process |
| WO2017055806A1 (en) * | 2015-09-30 | 2017-04-06 | Cambridge Cmos Sensors Limited | Gas sensor with a gas permeable region |
| TWI670480B (en) * | 2018-01-31 | 2019-09-01 | 研能科技股份有限公司 | Gas detecting device |
| US20210239665A1 (en) * | 2014-06-09 | 2021-08-05 | Biometry Inc. | Mini point of care gas chromatographic test strip and method to measure analytes |
| US20220041436A1 (en) * | 2019-01-31 | 2022-02-10 | Robert Bosch Gmbh | Method for producing a plurality of sensor devices, and sensor device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005073716A1 (en) | 2004-01-27 | 2005-08-11 | H2Scan Corporation | Isolated gas sensor configuration |
| DE102006060113A1 (en) * | 2006-12-20 | 2008-06-26 | Appliedsensor Gmbh | Sensor and manufacturing process of a sensor |
| DE102009047299A1 (en) * | 2009-11-30 | 2011-07-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 80686 | Ozone sensor for detection of ozone in water during e.g. drinking water processing, has liquid-impermeable element arranged with respect to sensing element for avoiding direct contact between liquid and detecting portion of sensing element |
| DE102015201822A1 (en) | 2015-02-03 | 2016-08-04 | Robert Bosch Gmbh | Sensor device, sensor system and method |
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| US4638286A (en) * | 1985-03-26 | 1987-01-20 | Enron Corp. | Reactive gas sensor |
| US5209275A (en) * | 1987-07-09 | 1993-05-11 | Junkosha Co., Ltd. | Liquid dispensing apparatus and method by sensing the type of liquid vapors in the receiver |
| GB2208006A (en) * | 1987-08-11 | 1989-02-15 | Emi Plc Thorn | Gas sensing device |
| DE4339737C1 (en) * | 1993-11-22 | 1995-01-19 | Siemens Ag | Gas sensor |
| DE19549147C2 (en) * | 1995-12-29 | 1998-06-04 | Siemens Ag | Gas sensor |
| US5798556A (en) * | 1996-03-25 | 1998-08-25 | Motorola, Inc. | Sensor and method of fabrication |
| GB9805867D0 (en) * | 1998-03-20 | 1998-05-13 | Aromascan Plc | Sensor manufacture |
| US6041643A (en) * | 1998-07-27 | 2000-03-28 | General Electric Company | Gas sensor with protective gate, method of forming the sensor, and method of sensing |
| FR2798996A1 (en) * | 1999-09-23 | 2001-03-30 | Suisse Electronique Microtech | SELF-DIAGNOSTIC ELECTROCHEMICAL SENSOR |
-
2002
- 2002-02-05 DE DE2002104458 patent/DE10204458A1/en not_active Ceased
-
2003
- 2003-02-05 EP EP03704543A patent/EP1472526A2/en not_active Ceased
- 2003-02-05 WO PCT/EP2003/001118 patent/WO2003067241A2/en not_active Ceased
- 2003-02-05 AU AU2003206838A patent/AU2003206838A1/en not_active Abandoned
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2391622B (en) * | 2002-07-31 | 2005-07-27 | Amgas Ltd | Condensation filter |
| GB2391622A (en) * | 2002-07-31 | 2004-02-11 | Amgas Ltd | Protecting gas sensors from condensation |
| GB2422432A (en) * | 2005-01-22 | 2006-07-26 | Draeger Safety Ag & Co Kgaa | Gas sensor |
| GB2422432B (en) * | 2005-01-22 | 2007-11-28 | Draeger Safety Ag & Co Kgaa | Gas sensor |
| US7406854B2 (en) | 2005-01-22 | 2008-08-05 | Dräger Safety AG & Co. KGaA | Gas sensor |
| EP1950281A1 (en) * | 2007-01-29 | 2008-07-30 | Fp Sensor Systems GmbH | Measuring device for determining the activity of a fermentation process |
| US20210239665A1 (en) * | 2014-06-09 | 2021-08-05 | Biometry Inc. | Mini point of care gas chromatographic test strip and method to measure analytes |
| US12117429B2 (en) * | 2014-06-09 | 2024-10-15 | Biometry Inc. | Mini point of care gas chromatographic test strip and method to measure analytes |
| WO2017055806A1 (en) * | 2015-09-30 | 2017-04-06 | Cambridge Cmos Sensors Limited | Gas sensor with a gas permeable region |
| US11022576B2 (en) | 2015-09-30 | 2021-06-01 | Sciosense B.V. | Gas sensor with a gas permeable region |
| CN108369208A (en) * | 2015-09-30 | 2018-08-03 | Ams传感器英国有限公司 | Gas sensor with gas-permeable region |
| TWI670480B (en) * | 2018-01-31 | 2019-09-01 | 研能科技股份有限公司 | Gas detecting device |
| US20220041436A1 (en) * | 2019-01-31 | 2022-02-10 | Robert Bosch Gmbh | Method for producing a plurality of sensor devices, and sensor device |
| US12195330B2 (en) * | 2019-01-31 | 2025-01-14 | Robert Bosch Gmbh | Method for producing a plurality of sensor devices, and sensor device |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2003206838A1 (en) | 2003-09-02 |
| DE10204458A1 (en) | 2003-08-14 |
| WO2003067241A3 (en) | 2004-03-11 |
| EP1472526A2 (en) | 2004-11-03 |
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