WO2018047936A1 - 容量型ガスセンサ - Google Patents
容量型ガスセンサ Download PDFInfo
- Publication number
- WO2018047936A1 WO2018047936A1 PCT/JP2017/032422 JP2017032422W WO2018047936A1 WO 2018047936 A1 WO2018047936 A1 WO 2018047936A1 JP 2017032422 W JP2017032422 W JP 2017032422W WO 2018047936 A1 WO2018047936 A1 WO 2018047936A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode layer
- gas
- electrode
- sensitive film
- gas sensor
- Prior art date
Links
Images
Classifications
-
- 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
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/226—Construction of measuring vessels; Electrodes therefor
-
- 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
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
-
- 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
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
-
- 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
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/221—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance by investigating the dielectric properties
- G01N2027/222—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance by investigating the dielectric properties for analysing gases
Definitions
- the present invention relates to a capacitive gas sensor used for measuring humidity and the like.
- Japanese Patent Application Laid-Open No. 2015-7618 discloses a first electrode layer formed on a substrate, a gas-sensitive gas permeable film formed on the first electrode layer, a first electrode layer, A capacitive gas sensor is disclosed that includes a second electrode layer made of a nanocarbon material entangled in a three-dimensional network formed on a gas-sensitive film facing each other.
- the second electrode layer provided on the outer surface of the gas-sensitive film is formed of a nanocarbon material
- the second electrode layer has a structure in which the nanocarbon material is entangled in a three-dimensional network, so that gas permeability is improved.
- the contact area between the electrode layer and the gas-sensitive film is reduced, so that the second electrode layer and the gas-sensitive film are increased due to an increase in environmental humidity or changes over time.
- peeling occurs between the first electrode layer and the second electrode layer.
- the electrical resistance increases and the frequency of the applied AC signal becomes extremely high. The problem that becomes impossible arises. Further, the occurrence of peeling causes deterioration of linear response to the humidity of the capacity and causes hysteresis.
- An object of the present invention is to provide a capacitive gas sensor in which separation does not occur between a second electrode layer having a structure in which a nanocarbon material is entangled in a three-dimensional network and a gas sensitive film.
- the present invention relates to a first electrode layer formed on a substrate, a gas sensitive film having air permeability formed on the first electrode layer, and a gas sensitive film facing the first electrode layer.
- a capacitive gas sensor including a second electrode layer made of a nanocarbon material entangled in a three-dimensional network formed on the substrate.
- the second electrode layer is formed in such a size that a part of the gas sensitive film protrudes around.
- a breathable resin layer having air permeability is provided on at least the second electrode layer.
- the reinforcing resin layer enters the void portion of the second electrode layer made of the nanocarbon material intertwined in a three-dimensional network, and a part thereof is in contact with the gas sensitive film. Accordingly, the reinforcing resin layer exhibits a function of preventing the second electrode layer from being peeled off from the gas sensitive film.
- a state in which the reinforcing resin layer is partially bonded to a part of the gas sensitive film is generated, so that an AC signal applied between the first electrode layer and the second electrode layer. The second electrode layer is prevented from being peeled off from the gas sensitive film when the frequency becomes extremely high or the environmental humidity becomes high.
- the second electrode layer is made of a nanocarbon material intertwined in a three-dimensional network, it is possible to prevent the detection accuracy of the sensor from deteriorating. Moreover, since peeling can be prevented, according to the present invention, it is possible to prevent deterioration of linear response to the humidity of the capacity and occurrence of hysteresis.
- the reinforcing resin layer may exist only on the second electrode layer.
- the second electrode layer is formed to have a size in which a part of the gas sensitive film protrudes from the periphery, and the gas-sensitive reinforcing resin layer that protrudes from the second electrode layer and the second electrode layer has a gas permeability. You may cover at least one part of a film
- the reinforcing resin layer is preferably formed of the same material as the gas sensitive film.
- the reinforcing resin layer serves as an anchor that prevents the second electrode layer from separating from the gas sensitive film, according to the present invention, the second electrode layer can be more reliably peeled from the gas sensitive film. Can be prevented.
- the thickness of the reinforcing resin layer is 2 ⁇ m or less, the presence of the reinforcing resin layer does not significantly impair the air permeability of the second electrode layer, so that the detection sensitivity is greatly increased by providing the reinforcing resin layer. Can be prevented.
- the thickness of the reinforcing resin layer is 1 ⁇ m or less, a high-speed response can be maintained.
- the gas sensitive film may have a capacity that changes according to a change in humidity, for example. In that case, it is preferable to use fluorinated polyimide as the gas sensitive film.
- the nanocarbon material is preferably one or more materials selected from SWCNT, NWCNT, DWCNT, and graphene.
- one or more first electrode portions connected to the first electrode layer and one or more second electrode portions connected to the second electrode layer are formed on the substrate.
- a gas sensitive film is formed on the substrate so as to cover the first electrode layer and expose the one or more first electrode portions and the one or more second electrode portions.
- the second electrode layer, the one or more second electrode portions, and the electrically sensitive through hole portion penetrating the gas sensitive film are electrically connected.
- the reinforcing resin layer is paired with both ends of the second electrode layer. It is preferable to have a shape that covers a part of the electrode portion. If it does in this way, it will become possible to prevent effectively also exfoliation of the 2nd electrode layer from an electrode part.
- the capacitive gas sensor of the present invention may have a structure including a pair of sensor elements on a substrate.
- two second electrode layers are formed on the gas sensitive film so as to intersect with the first electrode layer.
- the two second electrode layers have a width dimension in which a part of the gas sensitive film protrudes around.
- a reinforcing resin layer having air permeability covers at least a part of the two second electrode layers and the gas sensitive membrane protruding from the two second electrode layers.
- a pair of sensor elements is formed between the first electrode layer and the two second electrode layers. If it does in this way, the temperature characteristic can be improved using the output of two sensor elements.
- FIG. 2 is a sectional view taken along line II-II in FIG. It is a figure which shows the result of having measured the change of the capacity
- a humidity sensor using a gas sensitive film humidity sensitive film whose dielectric constant varies depending on the amount of water adsorbed will be described.
- FIG. 1 is a plan view of an example of a capacitive gas sensor 1 manufactured as a humidity sensor according to a first embodiment of the present invention.
- 2 is a cross-sectional view taken along the line II-II in FIG. Note that FIG. 2 is a simulation, and the thickness dimension of each layer is not proportional to the actual dimension.
- the capacitive gas sensor according to the present embodiment includes a first electrode layer 5 integrally provided with electrode portions 5A and 5B at both ends on a substrate 3, and two pairs of electrode portions 7A and 7B and 9A and 9B. It is equipped with.
- the substrate 3 can be formed by forming a conductive layer on an arbitrary substrate such as a silicon substrate or a resin substrate by an arbitrary film forming method instead of a glass substrate with a transparent electrode. .
- the first electrode layer 5, the pair of electrode portions 7A and 7B, and 9A and 9B are formed of a transparent electrode (ITO).
- a gas sensitive film 11 having air permeability is formed on the first electrode layer 5 so as to leave the electrode portions 5A and 5B.
- the gas sensitive film 11 has a capacity that changes in accordance with a change in humidity.
- the gas sensitive film 11 is made of fluorinated polyimide.
- two second electrode layers 13 and 13 made of a nanocarbon material entangled in a three-dimensional network formed on the gas sensitive film 11 partially facing the first electrode layer 5 are provided. Yes.
- two second electrode layers 13 and 13 are formed on the gas sensitive film 11 so as to cross the first electrode layer 5 with a space therebetween.
- the two second electrode layers 13 and 13 have a width dimension in which a part of the gas sensitive film 11 protrudes around.
- the two second electrode layers 13 and 13 are formed so that both end portions thereof overlap the pair of electrode portions 7A and 7B and 9A and 9B, respectively.
- the present embodiment there are two reinforcing resin layers 15 having a thickness that penetrates the inside of the two second electrode layers 13, 13 that have air permeability and come into contact with the gas-sensitive film 11.
- the second electrode layers 13 and 13 and at least a part of the gas sensitive film 11 protruding from the two second electrode layers 13 and 13 are covered.
- a pair of humidity sensor elements is formed between the first electrode layer 5 and the two second electrode layers 13 and 13.
- the capacitive gas sensor of the Example used for a test is provided with the structure of FIG.1 and FIG.2, and has the following raw materials and dimensions.
- the first electrode layer 5 was made of ITO and had a width dimension of 4 mm and a thickness of 150 nm.
- the pair of electrode portions 7A and 7B and 9A and 9B were also made of ITO, and the dimensions thereof were 4 mm ⁇ 4 mm.
- the gas sensitive film 11 was a fluorinated polyimide film (thickness 1.4 ⁇ m).
- the fluorinated polyimide is a polyimide containing fluorine, specifically, a polyimide containing a trifluoromethyl group or a hexafluoropropane group. Since the fluorinated polyimide has the hydrophilic property of the polyimide and the hydrophobic property of the fluorine, it has an advantage that it can quickly absorb and desorb moisture according to the surrounding humidity and has excellent response characteristics. The thinner the gas sensitive film 11, the more sensitive the humidity detection. However, since the film strength decreases as the thickness decreases, the thickness is appropriately set according to the application.
- the thickness of the gas sensitive film 11 may be determined in the range of about 10 nm to 100 ⁇ m.
- a precursor of fluorinated polyimide is applied on the substrate 3 in a flat shape to form a precursor coating film made of the precursor of fluorinated polyimide. Since the thickness of the sensitive film 11 and the reinforcing resin layer 15 depends on the thickness of the precursor coating film, the thickness of the precursor coating film is adjusted according to the thickness of the gas sensitive film 11 to be formed. To do. Next, the precursor coating film is pre-baked. The pre-baking temperature (100 to 200 ° C.) is set to a temperature at which the solvent of the precursor coating film is scattered and the precursor coating film is not imidized. Next, the precursor coating film at the portion covering the electrode portions 7A to 9B is removed by plasma etching to expose the electrode portions 7A to 9B.
- the reinforcing resin layer 15 is formed of the same material as the gas sensitive film 11. Therefore, a fluorinated polyimide film was used as the reinforcing resin layer 15.
- the thickness of the reinforcing resin layer 15 is preferably set to such a thickness that it penetrates into the second electrode layers 13 and 13 and comes into contact with the gas sensitive film 11. Specifically, the thickness of the reinforcing resin layer 15 is 2 ⁇ m. Is preferable. More preferably, it is 1 ⁇ m or less. In particular, the thickness of the reinforcing resin layer 15 is preferably 0.5 ⁇ m to 1 ⁇ m.
- the method for forming the reinforcing resin layer 15 is the same as the method for forming the gas sensitive film 11.
- the second electrode layers 13 and 13 are each composed of a conductive layer containing single-walled carbon nanotubes (SWCNT) as a conductive material.
- the second electrode layers 13 and 13 are formed by a transfer method. ing.
- the second electrode layers 13 and 13 have a width dimension of 2 mm and a thickness of about 100 nm to several ⁇ m.
- a transfer method or a coating method described in detail in Japanese Patent Laid-Open No. 2015-7618 cited as the prior art was used, but the description is omitted here.
- a method of forming a film by a transfer method or a coating method is much simpler than the case of using a method such as a plasma treatment or a vacuum process.
- the second electrode layers 13 formed by the transfer method have a rough surface. This indicates that the carbon nanotubes of the second electrode layers 13 and 13 are formed so as to be entangled with each other, and the surfaces of the second electrode layers 13 and 13 are uneven. Further, the second electrode layers 13 and 13 formed by the transfer method are integrated with the gas sensitive film 11 with a certain degree of strength. However, if the bonding strength between the first electrode layer 5 and the second electrode layer 13 becomes high due to high humidity in the environment or weakening due to changes over time, peeling occurs and the electrical resistance increases due to the reduction in the contact area. Thus, there arises a problem that measurement becomes impossible when the frequency of the AC signal to be applied is increased. For this purpose, the reinforcing resin layer 15 is provided in the present embodiment.
- SWCNT is used as the conductive material for the second electrode layers 13 and 13, but as the conductive material constituting the second electrode layers 13 and 13, double-layer carbon is used in addition to SWCNT and MWCNT.
- nano-sized carbon materials such as nanotubes (DWCNT) and graphene can be appropriately selected and used in combination.
- nanocarbon material means that nanocarbon materials such as SWCNT, MWCNT, DWCNT, and graphene are used singly or in combination.
- the change in capacitance was obtained by measuring the capacitance of the humidity sensor relative to the relative humidity by the following method. That is, a chamber (internal volume: about 110 cm 3 ) with an open / close door installed in a constant temperature / humidity chamber, a humidity sensor to be measured is set in the chamber, and the open / close door of the chamber is closed. Dry air is introduced into the chamber through a flow path communicating with the outside of the chamber, and the air is discharged to the outside to dry the chamber (humidity 0 to 2% RH).
- the measurement was performed three times for each predetermined humidity (measurement humidity), and the measurement humidity (20%, 50%, and 80% was changed, and the frequency of the applied AC signal was changed to 1 kHz, 10 kHz, and 100 kHz, and the measurement was performed in the same manner.
- the value of the volume meter when the inside of the chamber was dried was 0% RH, and all measurements were at room temperature (25 ° C.).
- FIG. 4 shows a plan view of the second embodiment.
- both end portions of the second electrode layers 13 and 13 are formed on the substrate 3 with a pair of electrode portions 7A and 7B, 9A and
- the reinforcing resin layer 15 has a shape and dimension that covers both ends of the second electrode layers 13, 13 and the pair of electrode portions 7A and 7B and a part of 9A and 9B. is doing.
- the reinforcing resin layer 15 is formed in this manner, the peeling of the second electrode layers 13 and 13 from the electrode portions 7A and 7B and 9A and 9B can be effectively prevented.
- two second electrode layers 13 are provided for one first electrode layer 5, but one for each first electrode layer 5. Naturally, the case where two second electrode layers 13 are provided is also included in the present invention.
- FIG. 5 shows a cross-sectional view of the third embodiment. Specifically, a gas sensitive film 11 is formed on the entire surface of the substrate 3 so as to expose a pair of electrode portions 7A and 7B connected to both ends and an electrode portion (not shown) of the first electrode layer 5. ing. Then, both end portions of the second electrode layer 13 and the pair of electrode portions 7A and 7B are connected by the conductive through-hole portion 14.
- the conductive through hole portion 14 is formed of the same conductive material as the conductive material forming the second electrode layer 13. Needless to say, the conductive through-hole portion 14 may be formed of a conductive material different from the conductive material forming the second electrode layer 13.
- the reinforcing resin layer 15 having air permeability is provided only on the second electrode layer. Even in such a structure, the resin constituting the reinforcing resin layer enters the void portion of the second electrode layer made of the nanocarbon material entangled in a three-dimensional network, and a part thereof is in contact with the gas sensitive film. To do.
- the reinforcing resin layer 15 exhibits a function of preventing the second electrode layer 13 from peeling off from the gas sensitive film 11. Therefore, even in such a structure, a state in which the resin constituting the reinforcing resin layer 15 is partially bonded to a part of the gas sensitive film 11 occurs, so that the second electrode layer 13 is formed of the gas sensitive film. 11 can be prevented from peeling off.
- the gas-sensitive film 11 is formed using fluorinated polyimide.
- the gas-sensitive film 11 has air permeability after curing.
- other materials can be used as long as they are shown.
- the gas-sensitive film and the reinforcing resin layer may be formed using a polyimide-based photosensitive resin.
- the capacitive gas sensor according to the present invention is used as a humidity sensor.
- the capacitive gas sensor according to the present invention is not limited to use as a humidity sensor.
- the capacitive gas sensor according to the present invention can be used as a gas sensor for detecting the concentration of an organic compound such as alcohol or aldehyde.
- a humidity sensor or a general gas sensor can also be incorporated into a circuit board, it can be reduced in size and can be easily adapted to mass production.
- the reinforcing resin layer having air permeability is provided on at least the second electrode layer.
- the reinforcing resin layer enters the void portion of the second electrode layer made of the nanocarbon material intertwined in a three-dimensional network, and a part thereof is in contact with the gas sensitive film. Accordingly, the reinforcing resin layer exhibits a function of preventing the second electrode layer from being peeled off from the gas sensitive film.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
Description
試験に使用する実施例の容量型ガスセンサは、図1及び図2の構成を備えて、以下の素材と寸法を有している。第1の電極層5は、ITOからなり、幅寸法が4mm、厚さが150nmであった。一対の電極部7A及び7B並びに9A及び9BもITOからなり、その寸法は4mm×4mmであった。
本発明の効果を確認するために、補強用樹脂層15を設けた上記実施例の容量型ガスセンサと補強用樹脂層15を設けなかった容量型ガスセンサについて、湿度と第1の電極層5と第2の電極層13,13との間に印加する交流信号の周波数を変えて容量の変化を測定した。図3はその結果を示している。
次に本発明の第2の実施の形態について説明する。図4は第2の実施の形態の平面図を示している。この第2の実施の形態では、図1の第1の実施の形態と異なって、基板3の上に第2の電極層13,13の両端部が、一対の電極部7A及び7B並びに9A及び9Bと重なった状態で接続される場合において、補強用樹脂層15が第2の電極層13,13の両端部と一対の電極部7A及び7B並びに9A及び9Bの一部を覆う形状寸法を有している。このように補強用樹脂層15を形成すると、電極部7A及び7B並びに9A及び9Bからの第2の電極層13,13の剥離も、有効に阻止することができる。
次に本発明の第3の実施の形態について説明する。第1及び第2の実施の形態では、第2の電極層13の大部分また全部を補強用樹脂層15により覆ったが、第3の実施の形態では、第2の電極層13の表面上だけを補強用樹脂層15により覆っている。図5は第3の実施の形態の断面図を示している。具体的には、両端部に接続される一対の電極部7A及び7Bと第1の電極層5の図示しない電極部を露出させるようにガス感応膜11が基板3の上に全面的に形成されている。そして第2の電極層13の両端部と一対の電極部7A及び7Bとが、導電性スルーホール部14により接続されている。本実施の形態では、導電性スルーホール部14は、第2の電極層13を形成する導電材と同じ導電材により形成されている。なお導電性スルーホール部14を第2の電極層13を形成する導電材とは別の導電材により形成してもよいのは勿論である。そして本実施の形態では、第1及び第2の実施の形態と異なって、第2の電極層の上にのみ通気性を有する補強用樹脂層15が設けられている。このような構造にしても、3次元網目状に絡み合ったナノカーボン材からなる第2の電極層の空隙部内には、補強用樹脂層を構成する樹脂が入り込み、一部はガス感応膜と接触する。これによって補強用樹脂層15は、第2の電極層13がガス感応膜11から剥離することを防止する機能を発揮する。したがってこのような構造であっても、補強用樹脂層15を構成する樹脂がガス感応膜11の一部と結合された状態が部分的に発生するので、第2の電極層13がガス感応膜11から剥離することを防止できる。
上記各実施の形態においては、ガス感応膜11にフッ素化ポリイミドを用いて形成したが、ポリイミド系有機化合物、セルロース、セルロース系有機化合物、ポリビニルアルコール(PVA)等のように、硬化後に通気性を示す材料であれば、その他の材料を用いることもできるのは勿論である。またガス感応膜及び補強用樹脂層をポリイミド系の感光性樹脂を用いて形成してもよいのは勿論である。
上記各実施形態においては、本発明に係る容量型ガスセンサを湿度センサに利用した例である。本発明に係る容量型ガスセンサは湿度センサとして使用する場合に限られるものではない。本発明に係る容量型ガスセンサは、アルコールやアルデヒド等の有機化合物の濃度を検出するガスセンサとして利用することができる。
3 基板
5 第1の電極層
11 ガス感応膜
13 第2の電極層
15 補強用樹脂層
Claims (10)
- 基板の上に形成された第1の電極層と、前記第1の電極層の上に形成された通気性のあるガス感応膜と、前記第1の電極層と対向して前記ガス感応膜の上に形成された3次元網目状に絡み合ったナノカーボン材からなる第2の電極層とを備えてなる容量型ガスセンサであって、
少なくとも前記第2の電極層の上に通気性を有する補強用樹脂層が設けられていることを特徴とする容量型ガスセンサ。 - 前記補強用樹脂層は、前記第2の電極層の上にのみ存在している請求項1に記載の容量型ガスセンサ。
- 前記第2の電極層は周囲に前記ガス感応膜の一部がはみ出る大きさに形成されており、通気性を有する補強用樹脂層が、前記第2の電極層及び前記第2の電極層からはみ出た前記ガス感応膜の少なくとも一部を覆っていることを特徴とする請求項1に記載の容量型ガスセンサ。
- 前記補強用樹脂層が、前記ガス感応膜と同じ材料によって形成されており、
前記補強用樹脂層の厚みが2μm以下である請求項1に記載の容量型ガスセンサ。 - 前記ガス感応膜は、湿度の変化に応じて容量が変化するものである請求項4に記載の容量型ガスセンサ。
- 前記ガス感応膜がフッ素化ポリイミドである請求項5に記載の容量型ガスセンサ。
- 前記ナノカーボン材が、SWCNT、NWCNT、DWCNT及びグラフェンから選択された1種または複数種の材料である請求項1または2に記載の容量型ガスセンサ。
- 前記基板の上には前記第1の電極層に接続された1以上の第1の電極部と、前記第2の電極層に接続された1以上の第2の電極部とが形成されており、
前記基板の上には、前記第1の電極層を覆い且つ前記1以上の第1の電極部及び前記1以上の第2の電極部を露出させるように前記ガス感応膜が形成されており、
前記第2の電極層と前記1以上の第2の電極部と前記ガス感応膜を貫通する導電性スルーホール部を介して電気的に接続されている請求項1に記載の容量型ガスセンサ。 - 前記基板の上には前記第2の電極層の両端部が重なった状態で接続される一対の電極部が形成されており、
前記補強用樹脂層は前記第2の電極層の前記両端部と前記一対の電極部の一部を覆う形状寸法を有している請求項1に記載の容量型ガスセンサ。 - 基板の上に形成された第1の電極層と、前記第1の電極層の上に形成された通気性のあるガス感応膜と、前記第1の電極層と対向して前記ガス感応膜の上に形成された3次元網目状に絡み合ったナノカーボン材からなる第2の電極層とを備えてなる容量型ガスセンサであって、
前記ガス感応膜の上に前記第1の電極層と交差するように間隔をあけて2本の第2の電極層が形成されており、
前記2本の第2の電極層は周囲に前記ガス感応膜の一部がはみ出る幅寸法を有しており、
通気性を有する補強用樹脂層が、前記2本の第2の電極層及び前記2本の第2の電極層からはみ出た前記ガス感応膜の少なくとも一部を覆っていることを特徴とする容量型ガスセンサ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/331,701 US11287395B2 (en) | 2016-09-09 | 2017-09-08 | Capacitive gas sensor |
CN201780054609.9A CN109690301B (zh) | 2016-09-09 | 2017-09-08 | 容量型气体传感器 |
JP2018538478A JP6450506B2 (ja) | 2016-09-09 | 2017-09-08 | 容量型ガスセンサ |
GB1903506.2A GB2568196B (en) | 2016-09-09 | 2017-09-08 | Capacitive gas sensor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016-176199 | 2016-09-09 | ||
JP2016176199 | 2016-09-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018047936A1 true WO2018047936A1 (ja) | 2018-03-15 |
Family
ID=61562166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2017/032422 WO2018047936A1 (ja) | 2016-09-09 | 2017-09-08 | 容量型ガスセンサ |
Country Status (5)
Country | Link |
---|---|
US (1) | US11287395B2 (ja) |
JP (1) | JP6450506B2 (ja) |
CN (1) | CN109690301B (ja) |
GB (1) | GB2568196B (ja) |
WO (1) | WO2018047936A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019168289A (ja) * | 2018-03-22 | 2019-10-03 | 株式会社東芝 | ガスセンシング方法、ガスセンサ、及びガスセンシングシステム |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0599877A (ja) * | 1991-06-25 | 1993-04-23 | Yamatake Honeywell Co Ltd | 感湿装置 |
US20060249402A1 (en) * | 2005-03-15 | 2006-11-09 | Snow Eric S | Capacitive based sensing of molecular adsorbates on the surface of single wall nanotubes |
JP2013539040A (ja) * | 2010-09-30 | 2013-10-17 | スリーエム イノベイティブ プロパティズ カンパニー | センサー素子、その製造方法、及びそれを含むセンサー装置 |
JP2015007618A (ja) * | 2013-05-29 | 2015-01-15 | 国立大学法人信州大学 | 容量型ガスセンサ及びその製造方法 |
JP2015518158A (ja) * | 2012-06-04 | 2015-06-25 | コミッサリア ア レネルジー アトミーク エ オ ゼネルジ ザルタナテイヴ | グラフェン電極を有する容量性の湿度センサー |
JP2015525362A (ja) * | 2012-06-25 | 2015-09-03 | スリーエム イノベイティブ プロパティズ カンパニー | センサー素子、その製造方法、及びその使用方法 |
JP2016504595A (ja) * | 2013-01-11 | 2016-02-12 | メアス フランスMeas France | 半導体回路上に一体化された容量センサ |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB559240A (en) * | 1942-06-23 | 1944-02-10 | Leslie Hartshorn | Improvements in and relating to electrically operated indicating or measuring instruments |
JPS55136946A (en) * | 1979-04-12 | 1980-10-25 | Ngk Spark Plug Co Ltd | Gas component detecting element and manufacture thereof |
JPS599877B2 (ja) * | 1979-04-28 | 1984-03-05 | 株式会社日立製作所 | 原子炉 |
FR2526949B1 (fr) * | 1982-05-11 | 1989-05-12 | Ministere Transports Direct Me | Procede de fabrication d'un capteur de temperature ou d'humidite du type a couches minces et capteurs obtenus |
JPS599877A (ja) * | 1982-07-07 | 1984-01-19 | 日立電線株式会社 | フラツトケ−ブル直付型コンセント装置 |
US4656455A (en) * | 1984-07-20 | 1987-04-07 | Toyama Prefecture | Humidity-sensing element |
US4603372A (en) * | 1984-11-05 | 1986-07-29 | Direction De La Meteorologie Du Ministere Des Transports | Method of fabricating a temperature or humidity sensor of the thin film type, and sensors obtained thereby |
JP3570153B2 (ja) * | 1997-04-28 | 2004-09-29 | ソニー株式会社 | 電子材料、その製造方法、誘電体キャパシタ、不揮発性メモリおよび半導体装置 |
JP2001004579A (ja) * | 1999-06-16 | 2001-01-12 | Shinei Kk | 容量式感湿素子 |
JP2001057618A (ja) * | 1999-08-18 | 2001-02-27 | Funai Electric Co Ltd | ファクシミリ装置 |
JP2002005868A (ja) * | 2000-06-16 | 2002-01-09 | Yamatake Corp | 検出器 |
US6724612B2 (en) * | 2002-07-09 | 2004-04-20 | Honeywell International Inc. | Relative humidity sensor with integrated signal conditioning |
KR101093612B1 (ko) * | 2008-11-12 | 2011-12-15 | 전자부품연구원 | 정전용량형 습도센서 및 그 제조방법 |
CN102341698B (zh) * | 2009-06-01 | 2013-10-09 | 阿尔卑斯电气株式会社 | 湿度检测传感器封装件及其制造方法 |
JP5653015B2 (ja) * | 2009-08-12 | 2015-01-14 | 日本ゴア株式会社 | 補強された膜電極組立体の製造方法および補強された膜電極組立体 |
CN104752602B (zh) * | 2010-03-12 | 2017-07-28 | 北陆电气工业株式会社 | 具备pzt膜的传感器元件的制造方法 |
KR101367887B1 (ko) * | 2012-03-16 | 2014-03-03 | 주식회사삼영에스앤씨 | 정전용량형 습도센서 |
JP2014169409A (ja) * | 2013-03-05 | 2014-09-18 | Shinshu Univ | Cfrp構造体及びcfrp構造体の修復装置 |
JP6235415B2 (ja) * | 2014-06-10 | 2017-11-22 | アルプス電気株式会社 | 湿度検知装置 |
CN204831421U (zh) * | 2015-07-30 | 2015-12-02 | 深圳嘉树科技有限公司 | 一种热式气体流量传感器 |
CN105486728B (zh) * | 2015-11-27 | 2018-05-25 | 深圳市美思先端电子有限公司 | 电容式湿度传感器及其制造方法 |
-
2017
- 2017-09-08 WO PCT/JP2017/032422 patent/WO2018047936A1/ja active Application Filing
- 2017-09-08 US US16/331,701 patent/US11287395B2/en active Active
- 2017-09-08 GB GB1903506.2A patent/GB2568196B/en active Active
- 2017-09-08 CN CN201780054609.9A patent/CN109690301B/zh active Active
- 2017-09-08 JP JP2018538478A patent/JP6450506B2/ja active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0599877A (ja) * | 1991-06-25 | 1993-04-23 | Yamatake Honeywell Co Ltd | 感湿装置 |
US20060249402A1 (en) * | 2005-03-15 | 2006-11-09 | Snow Eric S | Capacitive based sensing of molecular adsorbates on the surface of single wall nanotubes |
JP2013539040A (ja) * | 2010-09-30 | 2013-10-17 | スリーエム イノベイティブ プロパティズ カンパニー | センサー素子、その製造方法、及びそれを含むセンサー装置 |
JP2015518158A (ja) * | 2012-06-04 | 2015-06-25 | コミッサリア ア レネルジー アトミーク エ オ ゼネルジ ザルタナテイヴ | グラフェン電極を有する容量性の湿度センサー |
JP2015525362A (ja) * | 2012-06-25 | 2015-09-03 | スリーエム イノベイティブ プロパティズ カンパニー | センサー素子、その製造方法、及びその使用方法 |
JP2016504595A (ja) * | 2013-01-11 | 2016-02-12 | メアス フランスMeas France | 半導体回路上に一体化された容量センサ |
JP2015007618A (ja) * | 2013-05-29 | 2015-01-15 | 国立大学法人信州大学 | 容量型ガスセンサ及びその製造方法 |
Non-Patent Citations (1)
Title |
---|
ITOH, EIJI ET AL.: "Fabrication of fast, highly sensitive all-printed capacitive humidity sensors with carbon nanotube/polyimide hybrid electrodes", JAPANESE JOURNAL OF APPLIED PHYSICS, vol. 55, no. 2S, 19 January 2016 (2016-01-19), pages 02BB10, XP055604137, DOI: 10.7567/JJAP.55.02BB10 * |
Also Published As
Publication number | Publication date |
---|---|
GB2568196A (en) | 2019-05-08 |
JPWO2018047936A1 (ja) | 2018-11-29 |
JP6450506B2 (ja) | 2019-01-16 |
US11287395B2 (en) | 2022-03-29 |
GB201903506D0 (en) | 2019-05-01 |
GB2568196B (en) | 2022-04-20 |
CN109690301A (zh) | 2019-04-26 |
US20190250117A1 (en) | 2019-08-15 |
CN109690301B (zh) | 2021-12-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101093612B1 (ko) | 정전용량형 습도센서 및 그 제조방법 | |
CN102209892B (zh) | 改进的电容传感器及其制造方法 | |
WO2012046501A1 (ja) | 湿度検出センサ及びその製造方法 | |
KR101367887B1 (ko) | 정전용량형 습도센서 | |
WO2018062379A1 (ja) | 湿度センサ | |
CN107290241B (zh) | 一种qcm湿度传感器及其制备方法 | |
TWI432721B (zh) | 用以檢測解凍之感測器裝置及其製造方法 | |
KR100856577B1 (ko) | 탄소나노튜브 센서 및 그 제조방법 | |
US20090108852A1 (en) | Structure for capacitive balancing of integrated relative humidity sensor | |
JP2007139447A (ja) | 薄膜の透湿度測定装置および透湿度測定方法 | |
CN105510404A (zh) | 一种快速响应的湿度传感器及其制造方法 | |
US9234859B2 (en) | Integrated device of a capacitive type for detecting humidity, in particular manufactured using a CMOS technology | |
JP6450506B2 (ja) | 容量型ガスセンサ | |
JP2018059716A (ja) | センサ装置 | |
US20060055502A1 (en) | Humidity sensor | |
KR101902067B1 (ko) | 습도 센서 | |
JP6370111B2 (ja) | 容量型ガスセンサ及びその製造方法 | |
ITMI982153A1 (it) | Dispositivo multisensore per misure chimiche gravimetriche mediante strati piezoelettrici risonanti in tecnologia a film spesso. | |
US11506624B2 (en) | Capacitive gas sensors and manufacturing method thereof | |
KR20140003085A (ko) | 정전용량형 습도 센서 및 이의 제조방법 | |
Hsieh et al. | Dual-layer nanoporous anodic aluminum oxide with embedded electrodes for capacitive relative humidity sensor | |
Saeidi et al. | The effects of fabrication process on the performance of a CMOS based capacitive humidity sensor | |
KR101830304B1 (ko) | 통합 센서의 제조 방법 및 이를 이용한 통합 센서 | |
JP2007155556A (ja) | 湿度センサ | |
CN114858874A (zh) | 湿度感测结构、湿度传感器及湿度感测结构的制作方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 2018538478 Country of ref document: JP |
|
DPE1 | Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17848874 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 201903506 Country of ref document: GB Kind code of ref document: A Free format text: PCT FILING DATE = 20170908 |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 17848874 Country of ref document: EP Kind code of ref document: A1 |