WO2009147871A1 - 流体加熱器、その製造方法、流体加熱器を備えた基板処理装置および基板処理方法 - Google Patents
流体加熱器、その製造方法、流体加熱器を備えた基板処理装置および基板処理方法 Download PDFInfo
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- WO2009147871A1 WO2009147871A1 PCT/JP2009/052304 JP2009052304W WO2009147871A1 WO 2009147871 A1 WO2009147871 A1 WO 2009147871A1 JP 2009052304 W JP2009052304 W JP 2009052304W WO 2009147871 A1 WO2009147871 A1 WO 2009147871A1
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- WIPO (PCT)
- Prior art keywords
- fluid heater
- filler
- fluid
- heater according
- organic solvent
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/0033—Heating devices using lamps
- H05B3/0038—Heating devices using lamps for industrial applications
- H05B3/0052—Heating devices using lamps for industrial applications for fluid treatments
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/021—Heaters specially adapted for heating liquids
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/022—Heaters specially adapted for heating gaseous material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49082—Resistor making
- Y10T29/49083—Heater type
Definitions
- the present invention relates to a fluid heater that heats a fluid, a method for manufacturing the same, a substrate processing apparatus including the fluid heater, and a substrate processing method, and in particular, without performing any processing on the inner peripheral surface of a flow path tube.
- the present invention relates to a fluid heater capable of improving heat transfer efficiency and uniformity in heating of a fluid flowing in a flow channel tube, a manufacturing method thereof, a substrate processing apparatus including the fluid heater, and a substrate processing method.
- a substrate such as a semiconductor wafer or LCD glass (hereinafter also simply referred to as “wafer”) is sequentially immersed in a cleaning tank in which a cleaning solution such as a chemical solution or a rinsing solution is stored. Cleaning methods that perform cleaning are widely adopted.
- a vapor of an organic solvent having volatility such as isopropyl alcohol (IPA) is brought into contact with the surface of the cleaned wafer, and the vapor of the organic solvent is condensed or adsorbed on the surface of the wafer, and then N2 gas (nitrogen)
- N2 gas nitrogen
- a drying method for removing moisture on the surface of the wafer and drying it by supplying an inert gas such as gas) to the surface of the wafer for example, JP 2007-5479 A (JP2007-5479A)).
- a fluid that generates the organic solvent vapor by heating and evaporating the liquid of the organic solvent A heater is used. That is, the organic solvent liquid is supplied from the organic solvent supply source to the fluid heater, and the organic solvent liquid is heated by the fluid heater to generate the organic solvent vapor, and the wafer is accommodated in the chamber. On the other hand, the vapor
- a fluid heater one disclosed in, for example, Japanese Patent Application Laid-Open No. 2007-17098 (JP2007-17098A) is known.
- a conventional fluid heater disclosed in Japanese Patent Application Laid-Open No. 2007-17098 has a spiral shape in which a heat source lamp such as a halogen lamp and a liquid of an organic solvent to be heated are arranged to surround the heat source lamp. And a flow channel tube. Then, the liquid of the organic solvent is caused to flow through the spiral channel pipe, and the fluid flowing in the channel pipe is also heated by the channel pipe being heated by the heat source lamp. Is generated.
- the fluid flowing in the flow channel tube is not a turbulent flow but a laminar flow.
- the velocity of the fluid flowing through the central portion in the flow channel pipe is different from the velocity of the fluid flowing in the vicinity of the inner peripheral surface of the flow channel tube. That is, the speed of the fluid flowing through the central portion in the flow path pipe is higher than the speed of the fluid flowing near the inner peripheral surface of the flow path pipe.
- the degree of heating with respect to the fluid flowing in the vicinity of the inner peripheral surface of the channel pipe is larger than the degree of heating with respect to the fluid flowing through the central portion in the channel pipe.
- the present invention has been made in consideration of such points, and by providing one or more fillers inside the flow channel tube, the fluid flowing in the flow channel tube is made turbulent rather than laminar, The surface area of the heating portion that contacts the fluid flowing in the flow path pipe is increased by heating the fluid substantially uniformly by making the velocity of the fluid flowing in the flow path pipe substantially uniform, and providing the filler inside the flow path pipe.
- An object of the present invention is to provide a fluid heater and a method of manufacturing the same that can increase the heat transfer efficiency of the fluid flowing in the flow path pipe.
- Another object of the present invention is to provide a substrate processing apparatus and a substrate processing method provided with the fluid heater as described above.
- the present invention is a fluid heater that heats a fluid, and is provided in a flow path pipe through which a fluid to be heated flows, a heating unit that heats the flow path pipe, and the flow path pipe One or a plurality of fillers.
- a fluid heater one or a plurality of fillers are provided inside a flow path tube through which a fluid to be heated, which is a liquid or a gas, flows. For this reason, it is possible to make the fluid flowing in the flow channel pipe a turbulent flow instead of a laminar flow, and make the velocity of the fluid flowing in the flow channel pipe substantially uniform. For this reason, the fluid can be heated substantially uniformly in the flow channel tube.
- the surface area of the heated portion that comes into contact with the fluid flowing in the flow path pipe is increased by providing the filler inside the flow path pipe. For this reason, it becomes possible to increase the heat transfer efficiency for the fluid flowing in the flow path pipe.
- the filler preferably has heat conductivity.
- the filler is more preferably made of metal, silicon, ceramic, or a mixture thereof.
- the filler is coated with a fluororesin. At this time, it is more preferable that the filler is fixed to the inner wall of the flow channel pipe by the fluororesin.
- the filler has a spherical shape, a cylindrical shape, or a cylindrical shape.
- the filler is preferably made of a solid or hollow material.
- the filler is preferably made of a fiber or mesh.
- the flow path pipe is formed in a spiral shape.
- the heating unit is a lamp heater.
- the said heating part may be comprised from the induction heating type heater.
- the said heating part may be comprised from the resistance heating type heater.
- the present invention is a method of manufacturing a fluid heater for heating a fluid, the step of preparing a substantially straight channel pipe, and the step of filling one or more fillers inside the channel pipe; And a step of deforming a flow channel tube filled with one or a plurality of fillers into a spiral shape and a step of installing a heating unit for heating the flow channel tube.
- a fluid heater is manufactured in which the flow channel tube has a spiral shape and the filler provided in the flow channel tube also has a spiral shape. be able to.
- a step of coating the filler with a fluororesin is provided after the step of filling the channel tube with the filler.
- the step of coating the filler with the fluororesin is more preferably performed after the step of deforming the flow path tube into a spiral shape.
- a step of washing the flow channel tube with a chemical solution is provided. More preferably.
- the chemical solution is more preferably an acidic chemical solution.
- the shape of the filler is substantially linear, and when the flow path tube is deformed into a spiral shape, the filling filled in the flow path tube The material is also preferably deformed into a spiral shape.
- the present invention relates to a substrate processing apparatus for processing a substrate, a supply source for supplying a volatile organic solvent liquid, and an organic solvent vapor by heating the organic solvent liquid supplied from the supply source.
- the liquid of the organic solvent is surely evaporated to remove the organic solvent. Vapor can be generated, and vapor of the organic solvent can be reliably supplied to the chamber.
- the present invention is a substrate processing method for drying a substrate, the step of preheating the filler in the fluid heater before storing the substrate in the chamber, and the fluid in which the filler is preheated Supplying a volatile organic solvent liquid to the heater and heating the organic solvent liquid by the fluid heater to generate the organic solvent vapor; and the organic solvent vapor in the chamber containing the substrate And a step of drying the substrate by supplying.
- the filler of the fluid heater is preheated during the substrate cleaning process and the like, and then the organic solvent liquid is supplied to the fluid heater in which the filler is preheated.
- the organic solvent vapor is generated by heating the liquid of the organic solvent by the fluid heater, and then the substrate is accommodated in the chamber, and the substrate is dried by supplying the organic solvent vapor into the chamber. Will be able to do.
- the organic solvent vapor is rapidly generated. As a result, the substrate can be dried more quickly.
- or FIG. 6 is a figure which shows the fluid heater which concerns on this Embodiment.
- FIG. 1 is a configuration diagram showing an outline of the configuration of the fluid heater according to the present embodiment
- FIG. 2 is a cross-sectional view of the fluid heater shown in FIG. .
- FIG. 3 is explanatory drawing which shows the structure of the filler provided in the inside of the flow-path pipe
- FIG. 4 is an explanatory diagram showing another configuration of the filler provided inside the flow channel pipe of the fluid heater shown in FIGS. 1 and 2.
- FIG. 5 is a configuration diagram illustrating an outline of another configuration of the heating unit of the fluid heater according to the present embodiment
- FIG. 6 illustrates still another example of the heating unit of the fluid heater according to the present embodiment. It is a block diagram which shows the outline of a structure.
- the fluid heater 20 heats a fluid made of liquid or gas.
- the fluid heater 20 is provided inside the cylindrical container 22, is provided inside the cylindrical container 22, and heats the flow path pipe 26 made of, for example, a stainless steel pipe through which a fluid to be heated flows.
- a halogen lamp heater (heating unit) 23 and a large number of fillers 30 provided inside the flow channel pipe 26 are provided.
- a halogen lamp heater 23 extends substantially linearly along the longitudinal direction of the cylindrical container 22 (left and right direction in FIG. 1) at the center of the cylindrical container 22.
- the flow path pipe 26 is provided so as to surround the halogen lamp heater 23, and has a spiral shape whose center substantially coincides with the center of the halogen lamp heater 23.
- the flow path pipe 26 is made of, for example, a stainless steel pipe.
- a heat insulating material 21 is attached to the inner peripheral surface of the cylindrical container 22. Moreover, both opening edge parts of the cylindrical container 22 are obstruct
- one end of the channel pipe 26 penetrates one end member 22 a of the cylindrical container 22 to form a fluid inlet 24, and the other end is the other end member of the cylindrical container 22.
- a fluid outlet 25 is formed through 22b.
- the spiral channel pipes 26 may be arranged close to each other so that the radiation light from the halogen lamp heater 23 is not leaked to the outside, or arranged in contact with each other in order to increase the heating efficiency. May be.
- a temperature sensor 29 that detects the temperature of the fluid that is heated by the halogen lamp heater 23 and flows out of the outlet 25 is disposed near the outlet 25 side of the flow path pipe 26.
- the halogen lamp heater 23 is connected to a current regulator 40 that adjusts the amount of heat generated by the halogen lamp heater 23.
- the temperature sensor 29 and the current regulator 40 are each electrically connected to the control unit 50, and the temperature detected by the temperature sensor 29 is transmitted to the control unit 50, and the control unit 50. Is transmitted to the current regulator 40, and the current regulator 40 is controlled so that the heated fluid is maintained at a predetermined temperature.
- each filler 30 is made of a heat conductive material, specifically, a metal such as copper, gold or silver, silicon, ceramic, or a mixture thereof.
- each filler 30 will be described in detail with reference to FIG. 3A to 3F are a top view and a side view showing various shapes of the filler 30, respectively.
- the filler 30 may be a solid spherical material. Moreover, as shown in FIG.3 (b), the filler 30 may be a mesh-shaped spherical thing. In the filler 30 as shown in FIG. 3B, the mesh is buried up to the inside of a sphere. Moreover, as shown in FIG.3 (c), the filler 30 may be a mesh-shaped spherical thing by which the space was provided in the inside. Moreover, as shown in FIG.3 (d), the filler 30 may be a solid cylindrical thing. Moreover, as shown in FIG.3 (e), the filler 30 may be cylindrical. Moreover, as shown in FIG.3 (f), the filler 30 may be comprised from the fibrous thing. The shape of the filler 30 is not limited to that shown in FIGS. 3 (a) to 3 (f), and may have a shape other than that shown in FIGS. 3 (a) to 3 (f).
- a single spiral filler 32 may be provided inside the flow channel pipe 26.
- a method of manufacturing the fluid heater 20A having the spiral-shaped flow channel pipe 26 in which the spiral-shaped filler 32 is provided as shown in FIG. 4 will be described below.
- a substantially straight channel pipe 26 is prepared.
- a substantially linear filler 32 is filled into the flow path pipe 26 along the flow path pipe 26.
- the flow path pipe 26 filled with the filler 32 is deformed into a spiral shape.
- the filler 32 filled in the channel tube 26 is also deformed into a spiral shape.
- a halogen lamp heater 23 extending substantially linearly is installed inside the spiral channel pipe 26 so as to be surrounded by the spiral channel pipe 26. In this way, a fluid heater 20A having a structure as shown in FIG. 4 is obtained.
- the filler 30 shown in FIGS. 1 to 3 and the filler 32 shown in FIG. 4 are preferably coated with a fluororesin.
- the filler 30 or the like is made of a metal such as copper, gold, or silver
- the filler 30 or the like collides with the inner wall of the flow channel pipe 26 by coating the filler 30 or the like with a fluororesin. Generation of metal particles from the filler 30 and the like can be prevented.
- it is more preferable that the filler 30 and the like are fixed to the inner wall of the flow channel pipe 26 with a fluororesin. Thereby, it is possible to prevent the filler 30 and the like from moving in the flow channel pipe 26.
- JP53-1332035A Japanese Patent Laid-Open No. 53-1332035
- the filling material 30 and the filling material 32 are filled in the flow path pipe 26.
- the fluororesin powder is fluidized while being charged.
- the fluidized fluororesin powder is fed into the flow path pipe 26 to cause electrostatic adhesion to the surface of the filler 30 or the like.
- the fluororesin powder is blown out together with a gas such as air from an ejection nozzle, the fluororesin powder is charged at the ejection nozzle portion, and the fluororesin powder blown out from the ejection nozzle is passed through the flow channel 26. May be sent to the inside of the container to cause electrostatic adhesion to the surface of the filler 30 or the like.
- the filler 30 or the filler 32 As yet another method of coating the filler 30 or the filler 32 with the fluororesin, the filler 30 or the like is preheated to a temperature higher than the melting temperature of the fluororesin in advance, and the preheated filler 30 or the like is coated with A method of adhering by spraying powder is conceivable. As another method, a method of coating the filler 30 or the like with a fluororesin by a fluid dipping method is conceivable.
- the fluororesin powder used for the coating as described above has, for example, a particle diameter in the range of 2 to 400 ⁇ m and a bulk density in the range of 0.1 to 1.2 g / cm 3 , It is preferable to use one having a relatively narrow particle size distribution.
- the shape of the fluororesin powder is preferably relatively spherical.
- JP2007-179047A Japanese Patent Application Laid-Open No. 2007-179047
- a method of coating the film by melting or baking is conceivable.
- the flow path pipe 26 filled with the filler 32 before coating is spiraled. After the shape is deformed, the inside of the flow path pipe 26 is washed with an acidic chemical such as sulfuric acid. This makes it possible to remove dust such as metal particles generated from the flow path pipe 26 and the filler 32 when the flow path pipe 26 is deformed into a spiral shape, and to adjust the surface state of the inner wall of the flow path pipe 26. Will be able to.
- the filler 32 in the flow path pipe 26 is coated with a fluororesin by the method described above. At this time, the filler 32 is fixed to the inner wall of the flow channel pipe 26 with a fluororesin. Finally, a halogen lamp heater 23 extending substantially linearly is installed inside the spiral channel pipe 26 so as to be surrounded by the spiral channel pipe 26.
- the heating unit for heating the flow path tube 26 is not limited to the halogen lamp heater 23 as shown in FIGS.
- the other heating unit for example, as shown in FIG. More specifically, a stainless steel pipe is used as the spiral-shaped channel pipe 26, and a coil 34 is provided around the spiral-shaped channel pipe 26 via an insulator 33. Then, by applying a high frequency to the coil 34 by the high frequency power source 35, an induced electromotive force is generated in a direction (left direction in FIG. 5) that hinders the magnetic field of the coil 34 with respect to the spiral flow path tube 26. When an induced current flows through the tube 26, the channel tube 26 is heated by the Joule heat.
- the filler 30 is made of metal, an induced current flows through the filler 30 and the filler 30 is heated by the Joule heat.
- the flow path pipe 26 can be heated, and if the filler 30 is made of metal, the filler 30 Heating can also be performed.
- a resistance heating type heater may be used. More specifically, a resistance heating heater 36 such as a strip-shaped ribbon heater, a rubber heater, or a tube-shaped ceramic heater is wound around a flow path pipe 26 that extends substantially linearly. Such a resistance heating type heater 36 generates heat by passing a current through a heating conductor 36a such as a nichrome wire.
- a heating conductor 36a such as a nichrome wire.
- one or a plurality of fillers 30 are provided inside the flow path pipe 26 through which the fluid to be heated, which is liquid or gas, flows. .
- the fluid flowing in the flow channel pipe 26 can be turbulent rather than laminar, and the velocity of the fluid flowing in the flow channel tube 26 can be made substantially uniform.
- the fluid can be heated in the flow path pipe 26 substantially uniformly.
- the filler 30 inside the flow channel pipe 26 the surface area of the heated portion that comes into contact with the fluid flowing in the flow channel pipe 26 is increased. For this reason, it becomes possible to increase the heat transfer efficiency for the fluid flowing in the flow path pipe 26.
- the filler 30 since the filler 30 has heat conductivity, the filler 30 is also sufficiently heated when the passage tube 26 is heated by the halogen lamp heater 23, and the heat of the filler 30 flows. It is directly transmitted to the fluid flowing in the passage pipe 26. For this reason, the degree of heating with respect to the fluid flowing in the flow channel pipe 26 can be further increased.
- the heat conductive filler 30 include metals such as copper, gold, and silver, silicon, ceramics, or a mixture thereof, but are not limited to such examples. These members may be used.
- the filler 30 is coated with a fluororesin, when the filler 30 is made of metal such as copper, gold, silver, etc., the filler 30 collides with the inner wall of the flow path pipe 26. By doing so, it is possible to prevent the metal particles from being generated from the filler 30. In addition, when the filler 30 is fixed to the inner wall of the flow channel pipe 26 with a fluororesin, it is possible to prevent the filler 30 from moving in the flow channel pipe 26.
- the filler 30 is not limited to one having heat conductivity.
- the filler 30 for example, polystyrene foam or resin may be used.
- the contact area of the filler 30 with the fluid flowing in the flow channel pipe 26 can be increased, and the fluid flowing in the flow channel pipe 26
- the surface area of the heated portion that contacts the substrate also increases.
- the contact area of the filler 30 with the fluid flowing in the flow channel pipe 26 can be increased, The surface area of the heated portion that contacts the flowing fluid is also increased.
- the shape of the filler 30 is not limited to the above.
- the channel pipe 26 has a spiral shape, the space occupied by the channel pipe 26 can be reduced as compared with the case where the channel pipe 26 is substantially linear, and the fluid heater 20 It can be made more compact.
- FIG. 7 is a configuration diagram showing an outline of the configuration of the substrate processing apparatus 60 according to one embodiment of the present invention.
- a substrate processing apparatus 60 shown in FIG. 7 is provided above the liquid processing unit 62 and a liquid processing unit 62 that performs chemical processing and cleaning processing of the semiconductor wafer W (hereinafter also simply referred to as “wafer”). And a drying processing unit 61 for drying the wafer W after the cleaning processing in the processing unit 62 is completed.
- the liquid processing unit 62 uses a predetermined chemical solution (for example, dilute hydrofluoric acid aqueous solution (DHF), ammonia-hydrogen peroxide solution (APF), sulfuric acid-hydrogen peroxide solution (SPM), etc.) for the wafer W. After that, a cleaning process is performed with pure water (DIW).
- DIW pure water
- the substrate processing apparatus 60 includes a wafer guide 64 that can hold a plurality of (for example, 50) wafers W.
- the wafer guide 64 can be moved (moved up and down) between the liquid processing unit 62 and the drying processing unit 61.
- a fan filter unit (FFU, not shown) is disposed above the substrate processing apparatus 60, and clean air is supplied to the substrate processing apparatus 60 as a downflow by the fan filter unit. .
- the liquid processing unit 62 has a storage tank 69 for storing a chemical solution and pure water.
- the chemical solution and pure water are alternately stored in the storage tank 69, and the wafer W is immersed in the chemical solution and pure water to perform chemical treatment and cleaning treatment of the wafer W, respectively.
- the drying processing unit 61 is provided with a chamber 65 for accommodating the wafer W and a chamber wall 67 for forming the chamber 65 therein.
- the atmosphere in the vicinity of the storage tank 69 provided in the liquid processing unit 62 and the atmosphere in the chamber 65 provided in the drying processing unit 61 are separated by a shutter 63 that is slidably disposed in the middle in the middle thereof. Or it can be made to communicate.
- the shutter 63 is accommodated in the shutter box 66 when liquid processing is performed in the storage tank 69 of the liquid processing unit 62 and when the wafer W is moved between the storage tank 69 and the chamber 65 by the wafer guide 64.
- the atmosphere in the vicinity of the tank 69 and the atmosphere in the chamber 65 are in communication.
- the seal ring 63a provided on the upper surface of the shutter 63 comes into contact with the lower end of the chamber wall 67 so that the lower surface opening of the chamber 65 is hermetically closed. It has become.
- a fluid nozzle 70 for mixing water vapor and IPA (isopropyl alcohol) vapor or supplying them alone into the chamber 65 is disposed inside the chamber 65.
- a pipe 80 is connected to the fluid nozzle 70.
- the pipe 80 branches into pipes 80a and 80b on the way, and is connected to a pure water supply source 91 and an IPA supply source 92, respectively.
- the opening / closing valve 82 provided in the pipe 80a is opened, and the flow rate control valve 85 is operated, whereby a predetermined flow rate of pure water is sent to the fluid heater 20, and the fluid heater 20 heats the pure water.
- water vapor is generated.
- the IPA liquid at a predetermined flow rate is sent to the fluid heater 20, and the IPA liquid is supplied to the fluid heater 20. Is heated to generate IPA vapor.
- These water vapor and IPA vapor are singly or mixed in the pipe 80 and injected into the chamber 65 from the fluid nozzle 70.
- an N 2 gas nozzle 71 for injecting N 2 gas (nitrogen gas) heated to a predetermined temperature into the chamber 65 is provided inside the chamber 65.
- N 2 gas nitrogen gas
- room temperature N 2 gas is supplied from the N 2 gas supply source 93 to the fluid heater 20 by opening the opening / closing valve 84. Then, the N2 gas is heated to a predetermined temperature by the fluid heater 20, and the heated N2 gas can be injected into the chamber 65 from the N2 gas nozzle 71 through the N2 gas supply line 81.
- an exhaust nozzle 72 for exhausting the atmospheric gas in the chamber 65 is provided inside the chamber 65.
- the exhaust nozzle 72 is provided with a natural exhaust line for performing natural exhaust from the chamber 65 and a forced exhaust line for performing forced exhaust from the chamber 65.
- the substrate processing apparatus 60 is provided with a control unit 99 that controls each of the above-described components.
- the control unit 99 is connected to each component of the substrate processing apparatus 60, and operates (specifically, for example, raising and lowering the lid portion of the chamber wall 67, raising and lowering the wafer guide 64, sliding the shutter 63, The valves 82, 83, 84, 85, 86 are opened and closed).
- the control unit 99 includes a keyboard on which the process manager manages command input to manage the substrate processing apparatus 60, a display that visualizes and displays the operating status of the substrate processing apparatus 60, and the like.
- a data input / output unit 97 is connected.
- control unit 99 performs processing on each component of the substrate processing apparatus 60 in accordance with a control program for realizing various processes executed by the substrate processing apparatus 60 under the control of the control unit 99 and processing conditions.
- a storage medium 98 that stores a program (ie, recipe) for execution is connected.
- the storage medium 98 can be configured by a memory such as a ROM or a RAM, a disk-shaped storage medium such as a hard disk, a CD-ROM, or a DVD-ROM, or other known storage media.
- an arbitrary recipe is called from the storage medium 98 by an instruction from the data input / output unit 97 and is executed by the control unit 99, so that the substrate processing apparatus 60 controls the control unit 99.
- the desired processing is performed.
- a series of chemical liquid processing, cleaning processing, and drying processing as described below is performed by the control unit 99 controlling each component of the substrate processing apparatus 60 in accordance with a program (recipe) stored in the storage medium 98. Is called.
- the storage tank 69 of the liquid processing unit 62 and the chamber 65 of the drying processing unit 61 are separated by the shutter 63, and the inside of the chamber 65 is filled with N2 gas, and the internal pressure thereof is the same as the atmospheric pressure. .
- a predetermined chemical solution is stored in the storage tank 69.
- the wafer guide 64 is disposed in the chamber 65 of the drying processing unit 61.
- the supply of N 2 gas into the chamber 65 is stopped, and 50 wafers W are delivered to the wafer guide 64 from an external substrate transfer device (not shown). Thereafter, while forcibly exhausting from the exhaust nozzle 72, the shutter 63 is slid so that the storage tank 69 of the liquid processing unit 62 and the chamber 65 of the drying processing unit 61 communicate with each other.
- the wafer guide 64 is lowered, and the held wafer W is immersed in the chemical stored in the storage tank 69 for a predetermined time.
- pure water is supplied into the storage tank 69 while the wafer W is immersed in the storage tank 69, and the chemical solution in the storage tank 69 is replaced with pure water. W cleaning process is performed.
- the replacement of the chemical liquid with pure water in the storage tank 69 may be performed by discharging the chemical liquid from the storage tank 69 through the drainage pipe 69 a and then supplying pure water to the storage tank 69.
- the heat conductive filler 30 is heated in advance by the halogen lamp heater 23 in each fluid heater 20.
- the channel tube 26 is heated by the halogen lamp heater 23 in advance, so that the channel tube 26 is in a high temperature state, and the filler 30 is also heated by the channel tube 26.
- the exhaust from the chamber 65 is switched from the forced exhaust line to the natural exhaust line, and N 2 gas heated to a predetermined temperature is supplied from the N 2 gas nozzle 71 into the chamber 65.
- the inside is kept in a heated N2 gas atmosphere.
- the inside of the chamber 65 is warmed and the chamber wall 67 is warmed, and when IPA vapor is supplied into the chamber 65 later, condensation of the IPA vapor on the chamber wall 67 can be suppressed.
- the wafer guide 64 starts to be pulled up in order to accommodate the wafer W in the chamber 65.
- the wafer W is pulled up to a space filled with water vapor and does not dry, no watermark is formed on the wafer W at this stage.
- the supply of the IPA vapor into the chamber 65 is stopped, and then the wafer W is dried.
- N2 gas heated to a predetermined temperature is supplied into the chamber 65 to volatilize and evaporate IPA from the surface of the wafer W, and then N2 gas at room temperature is supplied into the chamber 65 to supply the wafer. It can be performed by the procedure of cooling W to a predetermined temperature.
- a substrate transfer apparatus (not shown) accesses the wafer guide 64 from the outside, and unloads the wafer W from the substrate processing apparatus 60. In this way, a series of processing of the wafers W in the substrate processing apparatus 60 is completed.
- the filler 30 of the fluid heater 20 is heated in advance while the chemical treatment or cleaning process of the wafer W is performed. Thereafter, an IPA liquid is supplied to the fluid heater 20 in which the filler 30 is heated in advance, and the IPA liquid is generated by the fluid heater 20 to generate IPA vapor, and the chamber in which the wafer W is accommodated.
- the wafer W is dried by supplying IPA vapor into 65. In this way, by heating the filler 30 in advance in the fluid heater 20 while performing other processing (for example, chemical processing or cleaning processing) other than the drying processing on the wafer W, The generation can be performed quickly, and the drying process for the wafer W can be performed more rapidly.
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- Cleaning Or Drying Semiconductors (AREA)
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- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
Description
Claims (20)
- 流体の加熱を行う流体加熱器であって、
加熱されるべき流体が流される流路管と、
前記流路管を加熱する加熱部と、
前記流路管の内部に設けられた1または複数の充填材と、
を備えたことを特徴とする流体加熱器。 - 前記充填材は導熱性を有することを特徴とする請求項1記載の流体加熱器。
- 前記充填材は金属、シリコン、セラミックまたはこれらの混合物からなることを特徴とする請求項2記載の流体加熱器。
- 前記充填材は、フッ素樹脂によりコーティングされたものであることを特徴とする請求項1記載の流体加熱器。
- 前記充填材は、前記フッ素樹脂により前記流路管の内壁に固定されていることを特徴とする請求項4記載の流体加熱器。
- 前記充填材の形状は球形、円柱形または円筒形であることを特徴とする請求項1記載の流体加熱器。
- 前記充填材は中実または中空のものからなることを特徴とする請求項1記載の流体加熱器。
- 前記充填材は繊維状またはメッシュ状のものからなることを特徴とする請求項1記載の流体加熱器。
- 前記流路管は螺旋形状のものからなることを特徴とする請求項1記載の流体加熱器。
- 前記加熱部はランプヒータからなることを特徴とする請求項1記載の流体加熱器。
- 前記加熱部は誘導加熱型ヒータからなることを特徴とする請求項1記載の流体加熱器。
- 前記加熱部は抵抗加熱式ヒータからなることを特徴とする請求項1記載の流体加熱器。
- 流体の加熱を行う流体加熱器の製造方法であって、
略直線状の流路管を準備する工程と、
前記流路管の内部に1または複数の充填材を充填する工程と、
1または複数の充填材が充填された流路管を螺旋形状に変形させる工程と、
前記流路管を加熱する加熱部を設置する工程と、
を備えたことを特徴とする流体加熱器の製造方法。 - 前記流路管の内部に充填材を充填する工程の後に、前記充填材にフッ素樹脂をコーティングする工程が設けられていることを特徴とする請求項13記載の流体加熱器の製造方法。
- 前記充填材にフッ素樹脂をコーティングする工程は、前記流路管を螺旋形状に変形させる工程の後に行われることを特徴とする請求項14記載の流体加熱器の製造方法。
- 前記流路管を螺旋形状に変形させる工程の後であって、前記充填材にフッ素樹脂をコーティングする工程の前に、前記流路管内を薬液で洗浄する工程が設けられていることを特徴とする請求項15記載の流体加熱器の製造方法。
- 前記薬液は酸性の薬液であることを特徴とする請求項16記載の流体加熱器の製造方法。
- 前記充填材の形状は略直線状となっており、
前記流路管を螺旋形状に変形させる際に、この流路管の内部に充填された充填材も螺旋形状に変形させられることを特徴とする請求項13記載の流体加熱器の製造方法。 - 基板の処理を行う基板処理装置であって、
揮発性を有する有機溶剤の液体を供給する供給源と、
前記供給源により供給される有機溶剤の液体を加熱して有機溶剤の蒸気を生成する、請求項1記載の流体加熱器と、
基板を収容し、この収容された基板の乾燥を行うチャンバーであって、前記流体加熱器により生成された有機溶剤の蒸気が供給されるチャンバーと、
を備えたことを特徴とする基板処理装置。 - 基板の乾燥を行う基板処理方法であって、
基板をチャンバー内に収容する前に、請求項1記載の流体加熱器における充填材を予め加熱する工程と、
充填材が予め加熱された前記流体加熱器に揮発性を有する有機溶剤の液体を供給し、この流体加熱器により有機溶剤の液体を加熱して有機溶剤の蒸気を生成する工程と、
基板が収容されたチャンバー内に有機溶剤の蒸気を供給することにより基板を乾燥する工程と、
を備えたことを特徴とする基板処理方法。
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