WO2022030187A1 - 製膜用霧化装置、製膜装置及び製膜方法 - Google Patents
製膜用霧化装置、製膜装置及び製膜方法 Download PDFInfo
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- WO2022030187A1 WO2022030187A1 PCT/JP2021/026035 JP2021026035W WO2022030187A1 WO 2022030187 A1 WO2022030187 A1 WO 2022030187A1 JP 2021026035 W JP2021026035 W JP 2021026035W WO 2022030187 A1 WO2022030187 A1 WO 2022030187A1
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- film
- raw material
- forming
- liquid
- atomizer
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- 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
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- H10P14/6939—
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- 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
- B05B17/0653—Details
- B05B17/0676—Feeding means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/0005—Components or details
- B05B11/0037—Containers
- B05B11/0054—Cartridges, i.e. containers specially designed for easy attachment to or easy removal from the rest of the sprayer
-
- 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
- B05B17/0615—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 spray being produced at the free surface of the liquid or other fluent material in a container and subjected to the vibrations
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- 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
- B05B17/0653—Details
- B05B17/0669—Excitation frequencies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/0012—Apparatus for achieving spraying before discharge from the apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
- B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
- B05B7/262—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device a liquid and a gas being brought together before entering the discharge device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
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- H10P14/60—
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- H10P14/6342—
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- H10P72/0402—
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
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- H10P14/3434—
Definitions
- the present invention relates to a film-forming atomizer, a film-forming device, and a film-forming method.
- Patent Document 1 a method in which a container containing a raw material solution is applied to an ultrasonic vibrator to mist the raw material solution, and the obtained mist-like raw material is supplied to a substrate in a reactor with a carrier gas to form a film. Is disclosed.
- Patent Document 2 discloses a method of avoiding the adhesion of air bubbles to the bottom surface of the raw material container by providing an angle to the bottom surface of the raw material container with respect to the liquid surface of the intermediate liquid.
- Patent Document 2 since the depth of the raw material liquid in the raw material container is non-uniform, the raw material liquid cannot be sufficiently atomized, especially when a plurality of ultrasonic generators are provided. Further, there is a problem that the structure of the atomizing device becomes complicated and the device becomes expensive.
- the present invention has been made to solve the above-mentioned problems, and is provided with a film-forming atomizer capable of continuously atomizing a raw material liquid with high efficiency, and a product comprising such an atomizer. It is an object of the present invention to provide a film forming apparatus and a film forming method capable of performing stable film forming with high productivity.
- the present invention is an atomizing device for film formation that atomizes a raw material liquid by ultrasonic waves to generate a raw material mist.
- a raw material container for accommodating the raw material liquid and A propagation tank that houses an intermediate liquid as a medium for propagating the ultrasonic waves in the raw material liquid, and A support mechanism that supports the raw material container so that at least a part of the raw material container is located in the intermediate liquid.
- the circulation mechanism that circulates the intermediate liquid and An ultrasonic generator that generates the ultrasonic wave and applies it to the propagation tank,
- a film-forming atomizer provided with a degassing mechanism for discharging the gas in the intermediate liquid to the outside of the system of the film-forming atomizer.
- the atomizing apparatus of the present invention can continuously atomize the raw material liquid with high efficiency. Further, since the atomizing apparatus of the present invention can continuously atomize the raw material liquid, it is possible to perform high-density raw material liquid atomization. A film-forming device provided with such an atomizing device can perform stable film-forming with high productivity.
- the injection port for injecting the intermediate liquid from the circulation mechanism into the propagation tank is arranged at a position lower than the bottom surface of the raw material container.
- the gas in the intermediate liquid can be removed more efficiently, and as a result, the raw material liquid can be continuously atomized with higher efficiency.
- the discharge port for discharging the intermediate liquid from the propagation tank to the circulation mechanism is arranged at a position higher than the bottom surface of the raw material container.
- the gas in the intermediate liquid can be removed more efficiently, and as a result, the raw material liquid can be continuously atomized with higher efficiency.
- the raw material container preferably has a horizontal bottom surface.
- the depth of the raw material liquid in the raw material container can be made uniform, whereby the raw material liquid can be atomized more sufficiently.
- the raw material liquid can be continuously atomized with higher efficiency.
- the device structure can be simplified, which also contributes to cost reduction.
- the degassing mechanism may be provided in the propagation tank.
- the degassing mechanism may be such that the inside and the outside of the space surrounded by the propagation tank and the support mechanism for holding the raw material container are spatially connected.
- the degassing mechanism may be provided in the circulation mechanism.
- the degassing mechanism may be provided anywhere where the intermediate liquid can exist.
- the film forming apparatus is configured to supply the raw material mist to the film forming machine and form a thin film on the base substrate arranged in the film forming machine.
- the atomizing device for film formation of the present invention and With the film-making machine The membrane-forming apparatus is provided with a supply mechanism configured to supply the raw material mist generated by atomization by the membrane-forming atomizer to the membrane-forming machine by a carrier gas. I will provide a.
- the present invention is a film forming method in which a raw material mist is supplied to a film forming machine to form a thin film on a base substrate arranged in the film forming machine.
- a step of atomizing the raw material liquid by the atomizing apparatus for film formation of the present invention a step of mixing the atomized raw material liquid and a carrier gas to form an air-fuel mixture, and a step of forming an air-fuel mixture.
- a film forming method including a step of supplying the air-fuel mixture to a base substrate to form a film.
- the atomizing apparatus for film formation of the present invention makes it possible to continuously propagate ultrasonic waves to the raw material liquid with high efficiency, and it is possible to stably atomize the raw material liquid. It becomes an atomizing device. That is, the film-forming atomizer of the present invention can continuously atomize the raw material liquid with high efficiency.
- stable film forming can be performed with high productivity.
- the present invention is an atomizing device used for film forming, and is an atomizing device for film forming that atomizes a raw material liquid by ultrasonic waves from an ultrasonic generator such as an ultrasonic vibrator, and a manufacturing using the atomizing device. It relates to a membrane device and a membrane forming method.
- the present inventors have developed a circulation mechanism for circulating an intermediate liquid in a propagation tank in a film-forming atomizer that atomizes a raw material liquid by ultrasonic waves to generate a raw material mist.
- this intermediate liquid can be moved so that the gas in the intermediate liquid faces the degassing mechanism.
- the gas in the intermediate liquid could be efficiently discharged to the outside of the system of the atomizing device for film formation, and the present invention was completed.
- the present invention is a film-forming atomizer that atomizes a raw material liquid by ultrasonic waves to generate a raw material mist.
- a raw material container for accommodating the raw material liquid and A propagation tank that houses an intermediate liquid as a medium for propagating the ultrasonic waves in the raw material liquid, and A support mechanism that supports the raw material container so that at least a part of the raw material container is located in the intermediate liquid.
- the circulation mechanism that circulates the intermediate liquid and An ultrasonic generator that generates the ultrasonic wave and applies it to the propagation tank,
- the film-forming atomizer is provided with a degassing mechanism for discharging the gas in the intermediate liquid to the outside of the system of the film-forming atomizer.
- the present invention is a film forming apparatus configured to supply a raw material mist to a film forming machine and form a thin film on a base substrate arranged in the film forming machine.
- the atomizing device for film formation of the present invention and With the film-making machine The membrane-forming apparatus is provided with a supply mechanism configured to supply the raw material mist generated by atomization by the membrane-forming atomizer to the membrane-forming machine by a carrier gas. Is.
- the present invention is a film forming method in which a raw material mist is supplied to a film forming machine to form a thin film on a base substrate arranged in the film forming machine.
- a step of atomizing the raw material liquid by the atomizing apparatus for film formation of the present invention a step of mixing the atomized raw material liquid and a carrier gas to form an air-fuel mixture, and a step of forming an air-fuel mixture.
- the film forming method is characterized by including a step of supplying the air-fuel mixture to a base substrate to form a film.
- the film-forming atomizer of the present invention is a film-forming atomizer that atomizes a raw material liquid by ultrasonic waves to generate a raw material mist.
- the circulation mechanism that circulates the intermediate liquid and An ultrasonic generator that generates the ultrasonic wave and applies it to the propagation tank, It is characterized by having a degassing mechanism for discharging the gas in the intermediate liquid to the outside of the system of the film-forming atomizer.
- the membrane-forming atomizer of the present invention is provided with a circulation mechanism for circulating the intermediate liquid and a degassing mechanism for discharging the gas in the intermediate liquid to the outside of the system of the membrane-forming atomizer.
- the intermediate solution can be moved so that the gas in the intermediate solution is directed toward the degassing mechanism.
- the film-forming neutralizing device of the present invention can efficiently discharge the gas in the intermediate liquid to the outside of the system of the film-forming atomizing device.
- the film-forming atomizer of the present invention can continuously atomize the raw material liquid with high efficiency.
- the atomizing apparatus of the present invention can continuously atomize the raw material liquid, it is possible to perform high-density raw material liquid atomization.
- the injection port for injecting the intermediate liquid from the circulation mechanism into the propagation tank is located at a position lower than the bottom surface of the raw material container.
- the discharge port for discharging the intermediate liquid from the propagation tank to the circulation mechanism is arranged at a position higher than the bottom surface of the raw material container.
- An atomizer such as these can further facilitate the movement of the intermediate liquid such that the gas in the intermediate liquid is directed toward the degassing mechanism, thereby removing the gas in the intermediate liquid more efficiently. can.
- the raw material liquid can be continuously atomized with higher efficiency.
- the raw material container preferably has a horizontal bottom surface.
- the depth of the raw material liquid in the raw material container can be made uniform, whereby the raw material liquid can be more sufficiently atomized.
- the raw material liquid can be continuously atomized with higher efficiency.
- the shape of the device can be simplified and the cost of the device can be reduced.
- the degassing mechanism discharges the gas in the intermediate liquid to the outside of the system of the atomizing device for film formation, it may be provided anywhere where the intermediate liquid can exist.
- the degassing mechanism may be provided in the propagation tank or may be provided in the circulation mechanism.
- the film-forming atomizer of the present invention may be provided with members other than the raw material container, the propagation tank, the support mechanism, the circulation mechanism, the ultrasonic generator, and the degassing mechanism.
- members other than the raw material container, the propagation tank, the support mechanism, the circulation mechanism, the ultrasonic generator, and the degassing mechanism For a specific example, refer to the following explanation.
- FIG. 1 schematically shows one form of a film-forming atomizer 100 according to the present invention.
- the film-forming atomizer 100 includes a raw material container 111 containing the raw material liquid 114, a propagation tank 121 containing an intermediate liquid 126 as a medium for propagating ultrasonic waves to the raw material liquid 114, and a raw material container 111.
- a support mechanism 123 that supports so that at least a part of the raw material container 111 is located in the intermediate liquid 126, a circulation mechanism 131 that circulates the intermediate liquid 126, and an ultrasonic wave that generates ultrasonic waves and is applied to the propagation tank 121. It is provided with a generator 122 and a degassing mechanism 127 for discharging the gas in the intermediate liquid 126 to the outside of the system of the film-forming atomizer 100.
- the film-forming atomizer 100 has a tubular shape that spatially connects the inside and the outside of the raw material container 111 and is installed so that the lower end thereof does not touch the liquid surface of the raw material liquid 114 in the raw material container 111.
- the member 112 and the pipe 132 in which the propagation tank 121 and the circulation mechanism 131 are fluidly connected are further provided.
- the circulation mechanism 131 is configured to circulate the intermediate liquid 126 with the propagation tank 121 in the direction of the arrow through the pipe 132.
- the circulation mechanism 131 may further include a temperature control function for the intermediate liquid 126.
- the raw material container 111 preferably has a horizontal bottom surface. By doing so, the depth of the raw material liquid 114 in the raw material container 111 can be made uniform, whereby the raw material liquid 114 can be more sufficiently atomized. As a result, the raw material liquid 114 can be continuously atomized with higher efficiency.
- the raw material container 111 is provided with a carrier gas introduction port 113 for introducing the carrier gas 141.
- the shapes of the raw material container 111 and the tubular member 112 are not particularly limited, but the cylindrical shape facilitates the mixture 142 in which the carrier gas 141 and the raw material mist (not shown) atomized by ultrasonic waves are mixed. Can be shed. It is preferable that the carrier gas introduction port 113 is provided above the lower end inside the raw material container 111 of the tubular member 112. By doing so, the carrier gas 141 and the raw material mist can be sufficiently mixed.
- the atomizing device 100 may further include a mechanism for replenishing the raw material liquid 114 according to its consumption.
- the propagation tank 121 accommodates an intermediate liquid 126 for propagating the ultrasonic waves emitted from the ultrasonic generator 122 to the raw material liquid 114.
- the ultrasonic emission surface of the ultrasonic generator 122 has a flat shape, and the irradiation direction may be fixed by inclining the emission surface, or may be inclined by adjusting the angle as appropriate. Further, a plurality of ultrasonic generators 122 may be provided according to a desired mist density, the size of the raw material container 111, and the like.
- the frequency of the ultrasonic wave oscillated from the super sound generator 122 is not limited as long as it generates a mist having a desired particle size and particle size, but for example, 1.5 MHz to 4.0 MHz may be used.
- the raw material liquid 114 is mistized (atomized) into micron-sized droplets (raw material mist) suitable for film formation.
- the raw material liquid 114 is not particularly limited as long as it can be atomized by receiving ultrasonic waves, and can be appropriately selected depending on the thin film to be formed.
- the intermediate liquid 126 is not particularly limited as long as it does not inhibit the propagation of ultrasonic waves, and water, alcohols, oils and the like may be used, but in the present invention, it is particularly preferable to use water. Further, although not shown in the figure, the propagation tank 121 may further include means for detecting and controlling the liquid amount and temperature of the intermediate liquid 126.
- the raw material container 111 is held by the support mechanism 123 in a state where the bottom thereof is separated from the bottom of the propagation tank 121 by a certain distance.
- the propagation tank 121 is provided with an injection port 124 that receives the intermediate liquid 126 from the circulation mechanism 131 via the pipe 132, and a discharge port 125 that discharges the intermediate liquid 126 to the circulation mechanism 131 via the pipe 132.
- the raw material container 111 is arranged so that the intermediate liquid 126 flows from the injection port 124 under the raw material container to the discharge port 125 by being supported by the support mechanism 123. At this time, it is preferable that the injection port 124 is installed at a position lower than the bottom of the raw material container 111.
- the raw material can be atomized.
- the holding height of the raw material container 111 depends on the frequency of the ultrasonic wave used, but generally, the distance between the liquid level of the raw material liquid 114 and the ultrasonic wave ejection surface of the ultrasonic generator 122 is about 10 mm to 70 mm. It is better to be.
- the degassing mechanism 127 is provided above the discharge port 125 of the propagation tank 121. Further, the degassing mechanism 127 spatially connects the inside and the outside of the space surrounded by the propagation tank 121 and the support mechanism 123 that holds the raw material container 111.
- the bubbles moved by the flow of the intermediate liquid 126 rise in the intermediate liquid 126 and are discharged to the outside of the system of the film forming atomizer 100 by the degassing mechanism 127. In this way, since the bubbles are released from the degassing mechanism 127 to the outside of the system of the film-forming atomizer 100, it is possible to avoid floating in the intermediate liquid 126 indefinitely and hindering the propagation of ultrasonic waves.
- the flow rate of the intermediate liquid 126 at this time is not particularly limited as long as the speed is sufficient to allow bubbles generated in the intermediate liquid 126 to flow, but it is generally preferable to set the flow rate to 1 L / min or more and 20 L / min.
- the degassing mechanism 127 is the upper part of the discharge port 125 of the propagation tank 121, and is sandwiched between the support mechanism 123 and the intermediate liquid 126 in a space continuous with the outside of the film forming atomizer 100.
- the mode of the degassing mechanism is not limited to this.
- the support mechanism 223 may be inclined, and the degassing mechanism 227 may be provided in a part of the upper part of the propagation tank 221 on the discharge port 225 side.
- the gas (air bubbles) in the intermediate liquid 226 filled under the support mechanism 223 can be easily released from the degassing mechanism 227 to the outside of the system of the film forming atomizer 200.
- the gas (air bubbles) in the intermediate liquid 326 is provided for film formation from the degassing mechanism 327 provided in the circulation mechanism 331. It may be discharged to the outside of the system of the atomizer 300.
- the discharge port 325 at least above the bottom surface of the raw material container 311 and more preferably near the upper end of the propagation tank 321.
- the discharge ports 125 and 225 are arranged at higher positions than the bottom surfaces of the raw material containers 111 and 211, respectively.
- reference numbers 211 and 311 are raw material containers similar to the raw material container 111 shown in FIG. 1
- reference numbers 212 and 312 are tubular members similar to the tubular member 112 shown in FIG.
- Reference numbers 213 and 313 are carrier gas introduction ports similar to the carrier gas introduction port 113 shown in FIG. 1
- reference numbers 214 and 314 are raw material liquids similar to the raw material liquid 114 shown in FIG. 1
- reference numbers 224 and 324 are similar to the inlet 124 shown in FIG. 1
- reference numbers 231 and 331 are shown in FIG.
- the circulation mechanism similar to the circulation mechanism 131, reference numbers 232 and 332, are the same pipes as the pipe 132 shown in FIG.
- the method of supporting the raw material container is preferably such that the flow of the intermediate liquid at the bottom of the raw material container is not obstructed. It may have.
- the members constituting the film-forming atomizer are not particularly limited as long as they are materials and structures that are chemically stable and have sufficient mechanical strength with respect to the raw material liquid and the intermediate liquid, and are not particularly limited, for example, metal or the like.
- a plastic material, glass, a material obtained by coating a metal surface with a plastic material, etc. can be used.
- the film-forming device of the present invention is a film-forming device configured to supply a raw material mist to the film-making machine and form a thin film on a base substrate arranged in the film-making machine.
- the atomizing device for film formation of the present invention and With the film-making machine It is characterized by comprising a supply mechanism configured to supply the raw material mist generated by atomization by the film-forming atomizer to the film-forming machine by a carrier gas.
- the film-forming device of the present invention includes the atomization device for film-forming of the present invention, it is possible to stably continue film-forming, and it is possible to make the device highly productive.
- FIG. 4 schematically shows one form of the film forming apparatus according to the present invention.
- the film-forming device 400 shown in FIG. 4 includes a film-forming atomizer 100, a supply mechanism 410, and a film-forming machine 430.
- the film-forming atomizing device 100 is an example of the film-forming atomizing device 100 of the present invention described with reference to FIG. It should be noted that the illustration of the circulation mechanism 131 and the like of the atomizer 100 is omitted.
- the film-forming atomizer 100 may be the film-forming atomizers 200 and 300 described with reference to FIGS. 2 and 3.
- the film-forming atomizer 100 is configured to atomize the raw material liquid 114 by ultrasonic waves to generate the raw material mist 422.
- the supply mechanism 410 includes a carrier gas supply unit 411 and pipes 413 and 424.
- the carrier gas supply unit 411 is connected to the film-forming atomizer 100 via a pipe 413.
- the carrier gas supply unit 411 is configured to supply the carrier gas 141 to the film-forming atomizer 100 via the pipe 413.
- the film-forming atomizer 100 is connected to the film-forming machine 430 via the pipe 424.
- the air-fuel mixture 142 of the carrier gas 141 and the raw material mist 422 is supplied to the film forming machine 430 through the pipe 424. That is, the supply mechanism 410 is configured to supply the raw material mist 422 generated by atomization by the film forming atomizer 100 to the film forming machine 430 by the carrier gas 141.
- the carrier gas supply unit 411 may be an air compressor, various gas cylinders, a nitrogen gas separator, or the like, or may be provided with a mechanism for controlling the gas supply flow rate.
- the pipes 413 and 424 are not particularly limited as long as they have sufficient stability with respect to the raw material liquid 114 and the temperature in the vicinity of the film forming machine 430, and quartz, polyethylene, polypropylene, vinyl chloride, silicone resin, urethane resin, etc. General resin pipes such as fluororesin can be widely used. Further, although not shown in the figure, a pipe that does not pass through the film-forming atomizer 100 may be separately connected to the pipe 424 from the carrier gas supply unit 411 so that the diluted gas can be supplied to the air-fuel mixture 142.
- the film-forming atomizer 100 may be provided with a plurality of units depending on the material to be formed. Further, in this case, the air-fuel mixture 142 supplied from the plurality of atomizers 100 to the film-forming machine 430 may be independently supplied to the film-forming machine 430 or may be mixed in the pipe 424. Alternatively, a mixing container (not shown) may be separately provided and mixed there.
- the film-forming machine 430 may include a film-forming chamber 431, a susceptor 432 that is installed in the film-forming chamber 431 and holds a base substrate 434 that forms a film, and a heating means 433 that heats the base substrate 434. ..
- the structure of the film-forming chamber 431 is not particularly limited, and for example, a metal such as aluminum or stainless steel may be used, or quartz or silicon carbide may be used when the film is formed at a higher temperature.
- the heating means 433 may be selected according to the material and structure of the base substrate 434, the susceptor 432, and the film forming chamber 431, and a resistance heating heater or a lamp heater is preferably used.
- the carrier gas 141 is mixed with the raw material mist 422 formed in the film forming atomizer 100 to become an air-fuel mixture 142, and is conveyed into the film forming chamber 431 of the film forming machine 430. Then, a film is formed on the base substrate 434.
- the base substrate 434 is not particularly limited as long as it can support the film to be formed.
- the material of the base substrate 434 is also not particularly limited, and may be a known material, an organic compound, or an inorganic compound.
- polysulfone, polyether sulfone, polyphenylene sulfide, polyetheretherketone, polyimide, polyetherimide, fluororesin, iron, aluminum, stainless steel, gold and other metals, silicon, sapphire, quartz, glass, calcium carbonate, tantalum examples thereof include, but are not limited to, lithium acid, lithium niobate, gallium oxide, SiC, ZnO, and GaN.
- Examples of the shape of the base substrate 434 include a flat plate and a disk, and any of them may be used. Although not particularly limited in the present invention, a base substrate 434 having an area of 5 cm 2 or more, more preferably 10 cm 2 or more, and a thickness of 50 to 2000 ⁇ m, more preferably 100 to 800 ⁇ m can be preferably used. As a modification, instead of the base substrate 434, a fibrous, rod-shaped, columnar, prismatic, tubular, spiral, spherical, or ring-shaped substrate can be used.
- the film forming apparatus may further include the exhaust means 440 shown in FIG.
- the exhaust means 440 may be connected to the film forming machine 430 by a pipe 441 or the like, or may be installed with a gap.
- the exhaust means 440 is not particularly limited in structure and configuration as long as it is made of a material that is stable against heat, gas and products discharged from the film forming machine 430, and is a known general exhaust fan or the like. Exhaust pump can be used. Further, depending on the nature of the discharged gas and the product, a mist trap, a wet scrubber, a bag filter, an abatement device and the like may be provided.
- FIG. 4 the form of the film forming machine 430 in which the base substrate 434 is installed inside the film forming chamber 431 has been described, but the film forming apparatus according to the present invention is not limited to this, and the film forming machine is not limited to this, as shown in FIG.
- a nozzle 531 for discharging the air-fuel mixture 533 may be used, and the air-fuel mixture 533 may be directly sprayed onto the base substrate 534 installed on the susceptor 532 to form a film.
- the nozzle 531 and the susceptor 532 may be provided with a driving means for driving in the horizontal direction, and the film may be formed while changing the relative positions of the base substrate 534 and the nozzle 531 in the horizontal direction.
- the susceptor 532 may be provided with a heating means for heating the base substrate 534.
- the nozzle 531 is not particularly limited as long as it is configured to receive the air-fuel mixture 142 from the film-forming atomizer 100 and discharge it as the air-fuel mixture 533.
- the film-forming machine 530 may be provided with an exhaust means 535.
- the exhaust means 535 may be integrated with the nozzle 531 as shown in FIG. 5, or may be installed separately.
- reference number 511 is a carrier gas supply unit similar to the carrier gas supply unit 411 shown in FIG. 4
- reference number 510 is a supply mechanism similar to the supply mechanism 410 shown in FIG. 4
- reference number 514 is.
- reference numbers 522 are raw material mists similar to the raw material mist 422 shown in FIG. 4, and reference numbers 513 and 524 are shown in FIG.
- the same pipes as the pipes 413 and 424, reference number 141 is the same carrier gas as the carrier gas 141 shown in FIGS. 1 and 4.
- the film-forming method of the present invention is a film-forming method in which a raw material mist is supplied to a film-forming machine to form a thin film on a base substrate arranged in the film-forming machine.
- a step of atomizing the raw material liquid by the atomizing apparatus for film formation of the present invention a step of mixing the atomized raw material liquid and a carrier gas to form an air-fuel mixture, and a step of forming an air-fuel mixture. It is characterized by including a step of supplying the air-fuel mixture to a base substrate to form a film.
- any of the film-forming atomizers 100, 200 and 300 shown in FIGS. 1 to 3 can be used.
- any of the film forming devices 400 and 500 shown in FIGS. 4 and 5 can be used.
- the raw material mist 422 is supplied to the film forming machine 430 to form a thin film on the base substrate 434 arranged in the film forming machine 430.
- the raw material liquid 114 is atomized by the film-forming atomizer 100 to generate the raw material mist 422.
- the atomized raw material liquid (raw material mist 422) and the carrier gas 141 are mixed to form an air-fuel mixture 142.
- the carrier gas 141 is supplied from the carrier gas supply unit 411 to the film forming atomizer 100 through the pipe 413.
- the air-fuel mixture 142 is supplied from the film-forming atomizer 100 to the film-forming machine 430 through the pipe 424. As a result, the air-fuel mixture 142 is supplied onto the base substrate 434 arranged in the film-forming machine 430 to form a film.
- Example 1 In Example 1, the raw material liquid 114 was atomized using the film-forming atomizer 100 shown in FIG. 1 in the following procedure, and the amount of atomization was measured.
- the raw material container 111 was filled with pure water measured as the raw material liquid 114, and the gas cylinder filled with nitrogen gas and the carrier gas introduction port 113 were connected by a urethane resin tube. Further, a mist trap was further prepared, and the mist trap and the tubular member 112 were connected by a PFA pipe.
- the propagation tank 121 was filled with water as the intermediate liquid 126.
- the pure water 114 in the raw material container 111 is superposed through water 126 by two ultrasonic vibrators (frequency 2.4 MHz) as the ultrasonic generator 122.
- the ultrasonic vibration was propagated to atomize (mist), and at the same time, the water 126 in the propagation tank 121 was circulated while being kept at 25 ° C. by a circulator as a circulation mechanism 131.
- nitrogen gas as a carrier gas 141 was added to the raw material container 111 at a flow rate of 5 L / min, and the air-fuel mixture 142 was sent to a mist trap to recover the raw material mist.
- the air-fuel mixture 142 was discharged for 5 hours, and atomization was stopped.
- Comparative Example 1 In Comparative Example 1, the atomization device not including the circulation mechanism 131 was used, that is, the water 126 in the propagation tank 121 was not circulated, and the water in the propagation tank 121 was kept at 25 ° C. by a throw-in chiller. Was atomized in the same manner as in Example 1.
- Table 1 shows the amount of recovered water obtained in Example 1 and Comparative Example 1.
- the film-forming atomizer 100 of Example 1 of the example of the film-forming atomizer according to the present invention can generate more mist than the atomizer of Comparative Example 1 having no circulation mechanism. You can see that.
- Example 2 the ⁇ -gallium oxide film was formed by using the film-forming device 400 shown in FIG. 4 equipped with the film-forming atomizer 100 shown in FIG. 1 in the following procedure. ..
- the film-forming atomizer 100 an apparatus provided with a raw material container 111 made of borosilicate glass and a tubular member 112 was used. Further, a film forming machine 430 equipped with a quartz film forming chamber 431 was prepared. As the carrier gas supply unit 411, a gas cylinder filled with nitrogen gas was used. The gas cylinder 411 and the film-forming atomizer 100 were connected by a urethane resin tube 413, and the film-forming atomizer 100 and the film-forming machine 430 were further connected by a quartz pipe 424.
- the propagation tank 121 was filled with water as the intermediate liquid 126.
- a c-plane sapphire substrate having a thickness of 0.6 mm and a diameter of 4 inches was placed on a quartz susceptor 432 installed in the film forming chamber 431, and the substrate was placed using the heating means 433. It was heated so that the temperature became 500 ° C.
- ultrasonic vibration is propagated to the raw material liquid 114 in the raw material container 111 through water 126 by two ultrasonic vibrators (frequency 2.4 MHz) as the ultrasonic generator 122, and the raw material liquid 114 is atomized.
- the raw material mist 422 was generated by (mistification), and at the same time, the water 126 in the propagation tank 121 was circulated while being kept at 25 ° C. by a circulator as a circulation mechanism 131.
- nitrogen gas was added to the raw material container 111 from the gas cylinder 411 at a flow rate of 5 L / min, and the mixture 142 of the raw material mist 422 and the nitrogen gas 141 was supplied to the film forming chamber 431 for 120 minutes to form a film.
- the supply of nitrogen gas was stopped, the supply of the air-fuel mixture 142 to the film forming chamber 431 was stopped, and the base substrate 434 was taken out.
- the atomization of the raw material liquid 114 was continuously performed while replenishing the raw material liquid 114 without stopping.
- the film thicknesses at 9 locations on the substrate surface were measured by light reflectance analysis for the films of all 5 prepared samples.
- Comparative Example 2 In Comparative Example 2, except that an atomizer not including the circulation mechanism 131 was used, that is, the water 126 in the propagation tank 121 was not circulated and the water in the liquid tank was kept at 25 ° C. by a throw-in chiller. A film was formed in the same manner as in Example 2.
- the film thicknesses at 9 locations on the substrate surface were measured by light reflectance analysis for the films of all 5 prepared samples.
- the film thicknesses of the films obtained in Example 2 and Comparative Example 2 are shown in Table 2 below.
- the film thickness shown in Table 2 is an average value of the film thicknesses at 9 locations.
- Example 2 As shown in Table 2 above, in the film forming performed by the film forming apparatus of Example 2 which is an example of the film forming apparatus according to the present invention, the growth rate is constant and stable film forming is efficiently continued. It turns out that it was possible to do it.
- the present invention is not limited to the above embodiment.
- the above-described embodiment is an example, and any of the above-described embodiments having substantially the same configuration as the technical idea described in the claims of the present invention and having the same effect and effect is the present invention. Is included in the technical scope of.
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Abstract
Description
前記原料液体を収容する原料容器と、
前記原料液体に前記超音波を伝播するための媒体としての中間液を収容する伝播槽と、
前記原料容器を、該原料容器の少なくとも一部が前記中間液中に位置するように支持する支持機構と、
前記中間液を循環させる循環機構と、
前記超音波を発生させ、前記伝播槽に印加する超音波発生器と、
前記中間液中の気体を前記製膜用霧化装置の系外に排出する脱気機構と
を具備するものであることを特徴とする製膜用霧化装置を提供する。
この場合、例えば、前記脱気機構を、前記伝播槽と前記原料容器を保持する前記支持機構とで囲まれる空間の内部と外部とを空間的に接続したものとすることができる。
本発明の製膜用霧化装置と、
前記製膜機と、
前記製膜用霧化装置により霧化して生成される前記原料ミストをキャリアガスによって前記製膜機に供給するように構成された供給機構と
を具備するものであることを特徴とする製膜装置を提供する。
本発明の製膜用霧化装置により原料液体を霧化するステップと
前記霧化された原料液体とキャリアガスを混合して混合気を形成するステップと、
前記混合気を下地基板に供給して製膜を行うステップと
を含むことを特徴とする製膜方法を提供する。
前記原料液体を収容する原料容器と、
前記原料液体に前記超音波を伝播するための媒体としての中間液を収容する伝播槽と、
前記原料容器を、該原料容器の少なくとも一部が前記中間液中に位置するように支持する支持機構と、
前記中間液を循環させる循環機構と、
前記超音波を発生させ、前記伝播槽に印加する超音波発生器と、
前記中間液中の気体を前記製膜用霧化装置の系外に排出する脱気機構と
を具備するものであることを特徴とする製膜用霧化装置である。
本発明の製膜用霧化装置と、
前記製膜機と、
前記製膜用霧化装置により霧化して生成される前記原料ミストをキャリアガスによって前記製膜機に供給するように構成された供給機構と
を具備するものであることを特徴とする製膜装置である。
本発明の製膜用霧化装置により原料液体を霧化するステップと
前記霧化された原料液体とキャリアガスを混合して混合気を形成するステップと、
前記混合気を下地基板に供給して製膜を行うステップと
を含むことを特徴とする製膜方法である。
本発明の製膜用霧化装置は、超音波によって原料液体を霧化して原料ミストを生成する製膜用霧化装置であって、
前記原料液体を収容する原料容器と、
前記原料液体に前記超音波を伝播するための媒体としての中間液を収容する伝播槽と、
前記原料容器を、該原料容器の少なくとも一部が前記中間液中に位置するように支持する支持機構と、
前記中間液を循環させる循環機構と、
前記超音波を発生させ、前記伝播槽に印加する超音波発生器と、
前記中間液中の気体を前記製膜用霧化装置の系外に排出する脱気機構と
を具備するものであることを特徴とする。
このような霧化装置であれば、原料容器内における原料液体の深さを均一にすることができ、それにより原料液体をより十分に霧化することができる。その結果、原料液体の霧化を継続的により高い効率で行うことができる。しかも、装置形状を単純化でき、装置コストの低減も計られる。
本発明の製膜装置は、製膜機に原料ミストを供給して、該製膜機に配置される下地基板上に薄膜を形成するように構成された製膜装置であって、
本発明の製膜用霧化装置と、
前記製膜機と、
前記製膜用霧化装置により霧化して生成される前記原料ミストをキャリアガスによって前記製膜機に供給するように構成された供給機構と
を具備するものであることを特徴とする。
本発明の製膜方法は、製膜機に原料ミストを供給して、該製膜機に配置される下地基板上に薄膜を形成する製膜方法であって、
本発明の製膜用霧化装置により原料液体を霧化するステップと
前記霧化された原料液体とキャリアガスを混合して混合気を形成するステップと、
前記混合気を下地基板に供給して製膜を行うステップと
を含むことを特徴とする。
実施例1では、以下の手順で、図1に示した製膜用霧化装置100を用いて、原料液体114の霧化を行い、霧化量を測定した。
比較例1では、循環機構131を含まない霧化装置を用いた、すなわち伝播槽121の水126の循環をせず、投げ込み式チラーで伝播槽121内の水を25℃に保ったことの他は実施例1と同様にして、霧化を実施した。
実施例2では、以下の手順で、図1に示した製膜用霧化装置100を具備した、図4に示した製膜装置400を用いて、α-酸化ガリウム膜の製膜を行った。
比較例2では、循環機構131を含まない霧化装置を用いた、すなわち伝播槽121の水126の循環をせず、投げ込み式チラーで液槽内の水を25℃に保ったことの他は実施例2と同様に製膜を行った。
Claims (9)
- 超音波によって原料液体を霧化して原料ミストを生成する製膜用霧化装置であって、
前記原料液体を収容する原料容器と、
前記原料液体に前記超音波を伝播するための媒体としての中間液を収容する伝播槽と、
前記原料容器を、該原料容器の少なくとも一部が前記中間液中に位置するように支持する支持機構と、
前記中間液を循環させる循環機構と、
前記超音波を発生させ、前記伝播槽に印加する超音波発生器と、
前記中間液中の気体を前記製膜用霧化装置の系外に排出する脱気機構と
を具備するものであることを特徴とする製膜用霧化装置。 - 前記循環機構から前記中間液を前記伝播槽へ注入する注入口が、前記原料容器の底面より低位置に配置されているものであることを特徴とする請求項1に記載の製膜用霧化装置。
- 前記伝播槽から前記中間液を前記循環機構へ排出する排出口が、前記原料容器の底面より高位置に配置されているものであることを特徴とする請求項1または2に記載の製膜用霧化装置。
- 前記原料容器は、水平な底面を具備するものであることを特徴とする請求項1から3のいずれか1項に記載の製膜用霧化装置。
- 前記脱気機構が前記伝播槽に設けられているものであることを特徴とする請求項1から4のいずれか1項に記載の製膜用霧化装置。
- 前記脱気機構が前記伝播槽と前記原料容器を保持する前記支持機構とで囲まれる空間の内部と外部とを空間的に接続したものであることを特徴とする請求項5に記載の成膜用霧化装置。
- 前記脱気機構が前記循環機構に設けられているものであることを特徴とする請求項1から4のいずれか1項に記載の製膜用霧化装置。
- 製膜機に原料ミストを供給して、該製膜機に配置される下地基板上に薄膜を形成するように構成された製膜装置であって、
請求項1から7のいずれか1項に記載の製膜用霧化装置と、
前記製膜機と、
前記製膜用霧化装置により霧化して生成される前記原料ミストをキャリアガスによって前記製膜機に供給するように構成された供給機構と
を具備するものであることを特徴とする製膜装置。 - 製膜機に原料ミストを供給して、該製膜機に配置される下地基板上に薄膜を形成する製膜方法であって、
請求項1~7のいずれか1項に記載の製膜用霧化装置により原料液体を霧化するステップと
前記霧化された原料液体とキャリアガスを混合して混合気を形成するステップと、
前記混合気を下地基板に供給して製膜を行うステップと
を含むことを特徴とする製膜方法。
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| CN202180057959.7A CN116056804A (zh) | 2020-08-05 | 2021-07-09 | 制膜用雾化装置、制膜装置以及制膜方法 |
| JP2022541177A JP7397205B2 (ja) | 2020-08-05 | 2021-07-09 | 製膜用霧化装置、製膜装置及び製膜方法 |
| EP21854204.1A EP4194103A4 (en) | 2020-08-05 | 2021-07-09 | Atomizer for forming film, film-forming device, and film-forming method |
| KR1020237003643A KR20230044417A (ko) | 2020-08-05 | 2021-07-09 | 제막용 무화장치, 제막장치 및 제막방법 |
| US18/018,746 US12434257B2 (en) | 2020-08-05 | 2021-07-09 | Film-forming atomizer, film-forming apparatus, and film-forming method |
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| KR20230044417A (ko) | 2023-04-04 |
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