WO2024014346A1 - 基板処理装置、基板処理方法、及び基板処理プログラム - Google Patents
基板処理装置、基板処理方法、及び基板処理プログラム Download PDFInfo
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- WO2024014346A1 WO2024014346A1 PCT/JP2023/024685 JP2023024685W WO2024014346A1 WO 2024014346 A1 WO2024014346 A1 WO 2024014346A1 JP 2023024685 W JP2023024685 W JP 2023024685W WO 2024014346 A1 WO2024014346 A1 WO 2024014346A1
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- nozzle
- gas
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- liquid
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/40—Treatment after imagewise removal, e.g. baking
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/16—Coating processes; Apparatus therefor
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/30—Imagewise removal using liquid means
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/30—Imagewise removal using liquid means
- G03F7/3021—Imagewise removal using liquid means from a wafer supported on a rotating chuck
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P52/00—Grinding, lapping or polishing of wafers, substrates or parts of devices
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
- H10P72/04—Apparatus for manufacture or treatment
- H10P72/0402—Apparatus for fluid treatment
- H10P72/0406—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like
- H10P72/0408—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for drying
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
- H10P72/04—Apparatus for manufacture or treatment
- H10P72/0402—Apparatus for fluid treatment
- H10P72/0406—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like
- H10P72/0411—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for wet cleaning or washing
- H10P72/0414—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for wet cleaning or washing using mainly spraying means, e.g. nozzles
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P76/00—Manufacture or treatment of masks on semiconductor bodies, e.g. by lithography or photolithography
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P76/00—Manufacture or treatment of masks on semiconductor bodies, e.g. by lithography or photolithography
- H10P76/20—Manufacture or treatment of masks on semiconductor bodies, e.g. by lithography or photolithography of masks comprising organic materials
Definitions
- the present disclosure relates to a substrate processing apparatus, a substrate processing method, and a substrate processing program.
- Patent Document 1 when cleaning the surface of a substrate while discharging cleaning liquid and nitrogen gas, the distance from the discharge position of the cleaning liquid nozzle to the center of the substrate and the distance from the discharge position of the gas nozzle to the center of the substrate are determined. A configuration is shown in which the nozzle is moved so that the difference with the distance becomes smaller.
- the present disclosure provides a technique that can reduce residue on the surface of a substrate after cleaning the substrate.
- a substrate processing apparatus is a substrate processing apparatus that processes a substrate, and includes a holding and rotating section that holds and rotates the substrate, and a holding and rotating section that holds and rotates the substrate, and a substrate processing apparatus that processes a substrate.
- a supply unit including at least one gas nozzle that supplies an active gas; and at least one rinsing nozzle that supplies a rinsing liquid to the substrate at a discharge position provided on an outer peripheral side of a gas supply position by the gas nozzle; , a control unit, the control unit moving the discharge position of the rinse liquid from the rinse nozzle from the center of the substrate toward the outer circumference while continuing discharge of the inert gas from the gas nozzle.
- the gas-liquid interface formed by the inert gas and the rinsing liquid By moving the gas-liquid interface formed by the inert gas and the rinsing liquid from the center to the outer circumferential direction, when the rinse nozzle moves in the outer circumferential direction, the gas-liquid interface formed by the inert gas and the rinsing liquid is The direction of the rinsing liquid is switched from a direction along the rotational direction of the substrate to a direction along the radial direction of the substrate when going from the center side to the outer peripheral side of the substrate.
- a technique is provided that can reduce residue on the surface of a substrate after cleaning the substrate.
- FIG. 1 is a schematic diagram showing an example of a substrate processing system.
- FIG. 2 is a schematic diagram showing an example of a coating and developing device.
- FIG. 3 is a schematic diagram showing an example of a developing unit.
- FIGS. 4(a) to 4(c) are schematic diagrams showing an example of the arrangement of the gas nozzle and rinse nozzle of the developing unit.
- FIG. 5 is a block diagram showing an example of the hardware configuration of the control device.
- FIG. 6 is a flow diagram showing an example of a substrate processing procedure.
- FIG. 7 is a flow diagram illustrating an example of a rinsing liquid removal procedure.
- FIGS. 8(a) to 8(d) are schematic diagrams showing an example of a procedure for removing the rinse liquid.
- FIGS. 10(a) to 10(d) are schematic diagrams showing an example of a rinse liquid removal procedure.
- FIG. 11 is a flow diagram illustrating an example of a rinsing liquid removal procedure.
- FIGS. 12(a) to 12(d) are schematic diagrams showing an example of a rinse liquid removal procedure.
- a substrate processing apparatus is a substrate processing apparatus that processes a substrate, and includes a holding and rotating section that holds and rotates the substrate, and a holding and rotating section that holds and rotates the substrate, and a substrate processing apparatus that processes a substrate.
- a supply unit including at least one gas nozzle that supplies an active gas; and at least one rinsing nozzle that supplies a rinsing liquid to the substrate at a discharge position provided on an outer peripheral side of a gas supply position by the gas nozzle; , a control unit, the control unit moving the discharge position of the rinse liquid from the rinse nozzle from the center of the substrate toward the outer circumference while continuing discharge of the inert gas from the gas nozzle.
- the rinsing liquid is discharged from the rinse nozzle from the center of the substrate toward the outer circumference while continuing to discharge inert gas from the gas nozzle to the substrate after the developer has been supplied.
- the gas-liquid interface formed by the inert gas and the rinsing liquid is moved from the center toward the outer periphery.
- the direction of the rinse liquid discharged from the rinse nozzle changes from the direction along the rotation direction of the substrate to the direction along the radial direction of the substrate. Can be switched.
- the discharge direction of the rinsing liquid from the rinsing nozzle is along the rotational direction of the substrate, thereby suppressing the generation of residue after the rinsing liquid is removed.
- the discharge direction of the rinsing liquid from the rinsing nozzle is along the radial direction of the substrate, thereby suppressing the generation of residue after the rinsing liquid is removed. Therefore, by switching to the discharge direction of the rinsing liquid as described above when moving the gas-liquid interface toward the outer circumference, it is possible to reduce the amount of residue on the substrate surface after cleaning the substrate.
- the supply unit includes a first arm provided with a first rinse nozzle and a first gas nozzle, and a second arm provided with a second rinse nozzle and a second gas nozzle, and discharges from the first rinse nozzle.
- the direction of the rinsing liquid discharged from the second rinsing nozzle is along the rotational direction of the substrate, and the direction of the rinsing liquid discharged from the second rinsing nozzle is along the radial direction of the substrate.
- the method is from a first state in which the gas-liquid interface is formed by supplying the inert gas and the rinsing liquid while moving the first arm closer to the center of the substrate than a predetermined switching position;
- the method may be switched to a second state in which the gas-liquid interface is formed by supplying the inert gas and the rinsing liquid while moving the second arm closer to the outer periphery of the substrate than the switching position.
- the inert gas and the rinsing liquid are supplied from the first arm whose discharge direction of the rinsing liquid from the first rinsing nozzle is along the rotational direction of the substrate.
- a gas-liquid interface By forming a gas-liquid interface, the generation of residue after the rinsing liquid is removed is suppressed.
- an air-liquid interface is formed by supplying inert gas and rinsing liquid from the second arm, in which the direction of discharge of the rinsing liquid from the second rinsing nozzle is along the radial direction of the substrate.
- the control unit causes the second rinse nozzle to also discharge the rinse liquid in the first state, and stops discharge of the rinse liquid from the first rinse nozzle in the second state, and
- the aspect may be such that the amount of the rinsing liquid discharged from the second rinsing nozzle is increased compared to the first state.
- the rinsing liquid in the first state, is also discharged from the second rinsing nozzle, thereby promoting the movement of the rinsing liquid from near the center of the substrate toward the outer circumference.
- the discharge of the rinse liquid from the first rinse nozzle is stopped, so by increasing the discharge amount of the rinse liquid from the second rinse nozzle, the movement of the rinse liquid in the outer circumferential direction is prevented. It can be promoted.
- the control unit may be configured to stop discharging the gas from the first gas nozzle in the second state.
- the distance between the discharge position of the rinse liquid from the first rinse nozzle in the first arm and the discharge position of the gas from the first gas nozzle is the distance between the discharge position of the rinse liquid from the second rinse nozzle in the second arm.
- the distance between the discharge position of the gas and the discharge position of the gas from the second gas nozzle may be smaller than the distance between the gas discharge position and the discharge position of the gas from the second gas nozzle.
- residue can be suppressed by having the rinsing liquid discharge position closer to the gas discharge position on the center side of the substrate, and closer to the rinsing liquid discharge position on the outer periphery of the substrate. Residue can be suppressed if the gas discharge position is separated from the gas discharge position. As mentioned above, the residue after cleaning can be further reduced by arranging the nozzles so that the discharge positions are close to each other in the first arm, and by arranging the nozzles so that the discharge positions are far from each other in the second arm. I can do it.
- a gas nozzle, a first rinse nozzle, and a second rinse nozzle are provided on an arm that is movable independently of each other, and the direction of the rinse liquid discharged from the first rinse nozzle is The direction is along the rotational direction of the substrate, the direction of the rinsing liquid discharged from the second rinsing nozzle is the direction along the radial direction of the substrate, and the control section From the first state in which the air-liquid interface is formed by supplying the rinsing liquid from the first rinsing nozzle on the center side of the substrate, the second rinsing liquid is applied on the outer peripheral side of the substrate from the switching position.
- the rinsing liquid is supplied from the first rinsing nozzle whose discharge direction is along the rotational direction of the substrate to form a gas-liquid interface.
- the generation of residue after the rinse solution is removed is suppressed.
- the residue after the rinsing liquid is removed is removed. The occurrence of is suppressed. Therefore, with the above configuration, it is possible to reduce the amount of residue on the surface of the substrate after cleaning the substrate.
- the control unit causes the second rinse nozzle to also discharge the rinse liquid in the first state, and stops discharge of the rinse liquid from the first rinse nozzle in the second state, and
- the aspect may be such that the amount of the rinsing liquid discharged from the second rinsing nozzle is increased compared to the first state.
- the rinsing liquid in the first state, is also discharged from the second rinsing nozzle, thereby promoting the movement of the rinsing liquid from near the center of the substrate toward the outer circumference.
- the discharge of the rinse liquid from the first rinse nozzle is stopped, so by increasing the discharge amount of the rinse liquid from the second rinse nozzle, the movement of the rinse liquid in the outer circumferential direction is prevented. It can be promoted.
- the distance between the discharge position of the rinsing liquid from the first rinse nozzle on the substrate in the first state and the discharge position of the gas from the gas nozzle on the substrate in the second state is The distance may be smaller than the distance between the discharge position of the rinse liquid from the second rinse nozzle and the discharge position of the gas from the gas nozzle.
- residue can be suppressed by having the rinsing liquid discharge position closer to the gas discharge position on the center side of the substrate, and closer to the rinsing liquid discharge position on the outer periphery of the substrate. Residue can be suppressed if the gas discharge position is separated from the gas discharge position.
- the nozzle in the first state, the nozzle is arranged so that the gas liquid and rinsing liquid discharge positions are close to each other, and in the second state, the nozzle is arranged so that these discharge positions are far apart. By doing so, it is possible to further reduce the residue after washing.
- the supply unit includes a first gas nozzle whose discharge position is fixed at the center of the substrate, a first arm provided with a first rinse nozzle, and a second arm provided with a second rinse nozzle and a second gas nozzle.
- the direction of the rinse liquid discharged from the first rinse nozzle is along the rotation direction of the substrate
- the direction of the rinse liquid discharged from the second rinse nozzle is along the rotation direction of the substrate.
- the direction is along the radial direction
- the control unit moves the first arm while supplying inert gas from the first gas nozzle closer to the center of the substrate than a predetermined switching position.
- the second arm is moved to the outer peripheral side of the substrate from the switching position, and the inert gas is The state may be changed to a second state in which the gas-liquid interface is formed by supplying the rinsing liquid.
- the rinsing liquid is supplied from the first rinsing nozzle whose discharge direction is along the rotational direction of the substrate, and the discharge position is fixed at the center of the substrate.
- the generation of residue after the rinse liquid is removed is suppressed.
- an air-liquid interface is formed by supplying inert gas and rinsing liquid from the second arm, in which the direction of discharge of the rinsing liquid from the second rinsing nozzle is along the radial direction of the substrate.
- the control unit causes the second rinse nozzle to also discharge the rinse liquid in the first state, and stops discharge of the rinse liquid from the first rinse nozzle in the second state, and
- the aspect may be such that the amount of the rinsing liquid discharged from the second rinsing nozzle is increased compared to the first state.
- the rinsing liquid in the first state, is also discharged from the second rinsing nozzle, thereby promoting the movement of the rinsing liquid from near the center of the substrate toward the outer circumference.
- the discharge of the rinse liquid from the first rinse nozzle is stopped, so by increasing the discharge amount of the rinse liquid from the second rinse nozzle, the movement of the rinse liquid in the outer circumferential direction is prevented. It can be promoted.
- the distance between the discharge position of the rinsing liquid from the first rinse nozzle on the substrate in the first state and the discharge position of the gas from the gas nozzle on the substrate in the second state is The distance may be smaller than the distance between the discharge position of the rinse liquid from the second rinse nozzle and the discharge position of the gas from the second gas nozzle.
- residue can be suppressed by having the rinsing liquid discharge position closer to the gas discharge position on the center side of the substrate, and closer to the rinsing liquid discharge position on the outer periphery of the substrate. Residue can be suppressed if the gas discharge position is separated from the gas discharge position.
- the nozzle in the first state, the nozzle is arranged so that the gas liquid and rinsing liquid discharge positions are close to each other, and in the second state, the nozzle is arranged so that these discharge positions are far apart. By doing so, it is possible to further reduce the residue after washing.
- the supply unit includes a first gas nozzle whose discharge position is fixed at the center of the substrate, and a first arm provided with a first rinse nozzle that can change the direction of the rinse liquid to be discharged.
- the control unit may change the direction of the rinsing liquid discharged from the first rinsing nozzle from a direction along the rotation direction of the substrate to a direction along the rotation direction of the substrate when the first rinsing nozzle moves in the outer circumferential direction. It may also be an aspect in which the temperature is gradually changed in a direction along the radial direction.
- the rinsing liquid is supplied with the rinsing liquid ejected from the rinsing nozzle in the direction along the rotational direction of the substrate to form a gas-liquid interface. Generation of residue after removal is suppressed.
- the rinsing liquid is supplied from the rinsing nozzle with the discharge direction along the radial direction of the substrate to form a gas-liquid interface, thereby preventing the generation of residue after the rinsing liquid is removed. is suppressed. Therefore, with the above configuration, it is possible to reduce the amount of residue on the surface of the substrate after cleaning the substrate.
- a substrate processing method is a substrate processing method for processing a substrate, which includes holding and rotating the substrate in a holding rotation unit, and treating the substrate after a developer is supplied.
- the direction of the rinsing liquid discharged from the rinsing nozzle is changed from a direction along the rotational direction of the substrate to a radial direction of the substrate. Switch in the direction along.
- the rinsing nozzle when the rinsing nozzle is moved from the center side of the substrate to the outer periphery side, the direction of the rinsing liquid discharged from the rinsing nozzle is changed from the direction along the rotational direction of the substrate to the radial direction of the substrate. You can switch in the same direction.
- the discharge direction of the rinsing liquid from the rinsing nozzle is along the rotational direction of the substrate, thereby suppressing the generation of residue after the rinsing liquid is removed. .
- the discharge direction of the rinsing liquid from the rinsing nozzle is along the radial direction of the substrate, thereby suppressing the generation of residue after the rinsing liquid is removed. Therefore, by switching to the discharge direction of the rinsing liquid as described above when moving the gas-liquid interface toward the outer circumference, it is possible to reduce the amount of residue on the substrate surface after cleaning the substrate.
- a substrate processing program is a substrate processing program that causes a computer to perform substrate processing, and includes holding and rotating the substrate in a holding/rotating unit, and holding and rotating the substrate after a developer is supplied.
- a rinsing liquid from a rinsing nozzle that supplies the rinsing liquid to the substrate at a discharge position provided on the outer peripheral side from a gas supply position by the gas nozzle while continuing to discharge inert gas from the gas nozzle to the substrate.
- the direction of the rinse liquid discharged from the rinse nozzle is set along the rotation direction of the substrate. direction to a direction along the radial direction of the substrate.
- a substrate processing system 1 (substrate processing apparatus) shown in FIG. 1 is a system that forms a photosensitive film on a work W, exposes the photosensitive film, and develops the photosensitive film.
- the work W to be processed is, for example, a substrate, or a substrate on which a film, a circuit, or the like is formed by performing a predetermined process.
- the substrate is, for example, a silicon wafer.
- the work W (substrate) may be circular.
- the workpiece W may be a glass substrate, a mask substrate, an FPD (Flat Panel Display), or the like.
- the photosensitive film is, for example, a resist film.
- the substrate processing system 1 includes a coating and developing device 2, an exposure device 3, and a control device 100.
- the exposure device 3 is a device that exposes a resist film (photosensitive film) formed on a workpiece W (substrate). Specifically, the exposure device 3 irradiates the portion of the resist film to be exposed with energy rays using a method such as immersion exposure.
- Energy rays are, for example, ionizing radiation or non-ionizing radiation. Ionizing radiation is radiation that has sufficient energy to ionize atoms or molecules.
- the ionizing radiation may be extreme ultraviolet (EUV), electron beam, ion beam, X-ray, alpha ray, beta ray, gamma ray, heavy particle beam, proton beam, or the like.
- EUV extreme ultraviolet
- Non-ionizing radiation is radiation that does not have sufficient energy to ionize atoms or molecules.
- the non-ionizing radiation may be g-line, i-line, KrF excimer laser, ArF excimer laser, F2 excimer laser, or the like.
- the coating and developing device 2 performs a process of coating a resist (chemical solution) on the surface of the workpiece W to form a resist film before the exposure process by the exposure device 3. Further, the coating and developing device 2 develops the resist film formed on the workpiece W after the exposure process.
- the coating and developing device 2 includes a carrier block 4, a processing block 5, and an interface block 6.
- the carrier block 4 introduces the workpiece W into the coating and developing device 2 and extracts the workpiece W from the coating and developing device 2 .
- the carrier block 4 can support, for example, a plurality of carriers C for workpieces W, and has a built-in transport device A1 including a delivery arm.
- the carrier C accommodates a plurality of circular workpieces W, for example.
- the transport device A1 takes out the workpiece W from the carrier C, passes it to the processing block 5, receives the workpiece W from the processing block 5, and returns it into the carrier C.
- the processing block 5 has processing modules 11, 12, 13, and 14.
- the processing module 11 includes a liquid processing unit U1, a heat processing unit U2, and a transport device A3 that transports the workpiece W to these units.
- the processing module 11 forms a lower layer film on the surface of the workpiece W using the liquid processing unit U1 and the heat processing unit U2.
- the liquid processing unit U1 applies a processing liquid for forming a lower layer film onto the workpiece W.
- the heat treatment unit U2 performs various heat treatments associated with the formation of the lower layer film.
- the processing module 12 includes a liquid processing unit U1, a heat processing unit U2, and a transport device A3 that transports the workpiece W to these units.
- the processing module 12 forms a resist film on the lower layer film using a liquid processing unit U1 and a heat processing unit U2.
- the liquid processing unit U1 applies a processing liquid for resist film formation onto the lower layer film.
- the liquid processing unit U1 applies, as a processing liquid for forming a resist film, a chemical liquid capable of forming a pattern by exposure to energy rays (for example, i-rays) onto the lower layer film.
- the heat treatment unit U2 performs various heat treatments associated with the formation of a resist film.
- the processing module 13 includes a liquid processing unit U1, a heat processing unit U2, and a transport device A3 that transports the workpiece W to these units.
- the processing module 13 forms an upper layer film on the resist film using the liquid processing unit U1 and the heat processing unit U2.
- the liquid processing unit U1 applies a processing liquid for forming an upper layer film onto the resist film.
- the heat treatment unit U2 performs various heat treatments associated with the formation of the upper layer film.
- the processing module 14 includes a developing unit U3, a heat treatment unit U4, a measuring unit U5, and a transport device A3 that transports the workpiece W to these units.
- the processing module 14 uses a developing unit U3 and a heat processing unit U4 to develop the resist film that has been subjected to the exposure process and performs heat treatment accompanying the development.
- the developing unit U3 is a unit that performs liquid processing on the workpiece W using a developer.
- the developing unit U3 forms a liquid film (paddle) of the developer on the surface of the workpiece W by supplying the developer onto the surface of the exposed workpiece W.
- the developing unit U3 develops the resist film by maintaining a liquid film of the developer on the surface of the work W (for example, statically developing). Furthermore, after performing development with the developer, the developing unit U3 washes away the developer on the surface of the workpiece W with a rinsing liquid, and removes the rinsing liquid remaining on the surface of the workpiece W.
- the heat treatment unit U4 performs various heat treatments associated with development. Specific examples of heat treatment include heat treatment before development (PEB: Post Exposure Bake), post-development heat treatment (PB: Post Bake), and the like.
- a shelf unit U10 is provided on the carrier block 4 side within the processing block 5.
- the shelf unit U10 is divided into a plurality of cells arranged in the vertical direction.
- a transport device A7 including a lifting arm is provided near the shelf unit U10. The transport device A7 moves the work W up and down between the cells of the shelf unit U10.
- a shelf unit U11 is provided within the processing block 5 on the interface block 6 side. The shelf unit U11 is divided into a plurality of cells arranged in the vertical direction.
- the interface block 6 transfers the workpiece W to and from the exposure apparatus 3.
- the interface block 6 includes, for example, a transport device A8 including a delivery arm, and is connected to the exposure device 3.
- the transport device A8 transfers the work W placed on the shelf unit U11 to the exposure device 3.
- the transport device A8 receives the workpiece W from the exposure device 3 and returns it to the shelf unit U11.
- the control device 100 (control unit) is configured to partially and entirely control the coating and developing device 2.
- the control device 100 controls the coating and developing device 2 to perform coating and developing processing, for example, in the following steps. First, the control device 100 controls the transport device A1 to transport the work W in the carrier C to the shelf unit U10, and controls the transport device A7 to place the work W in the cell for the processing module 11.
- control device 100 controls the transport device A3 to transport the work W on the shelf unit U10 to the liquid processing unit U1 and the heat processing unit U2 in the processing module 11. Further, the control device 100 controls the liquid processing unit U1 and the heat processing unit U2 so as to form a lower layer film on the surface of the workpiece W. Thereafter, the control device 100 controls the transport device A3 to return the work W on which the lower layer film has been formed to the shelf unit U10, and controls the transport device A7 to place the work W in the cell for the processing module 12. .
- control device 100 controls the transport device A3 to transport the work W on the shelf unit U10 to the liquid processing unit U1 and heat processing unit U2 in the processing module 12. Further, the control device 100 controls the liquid processing unit U1 and the heat processing unit U2 so as to form a resist film on the surface of the workpiece W. Thereafter, the control device 100 controls the transport device A3 to return the work W to the shelf unit U10, and controls the transport device A7 to place the work W in the cell for the processing module 13.
- control device 100 controls the transport device A3 to transport the work W on the shelf unit U10 to each unit in the processing module 13. Further, the control device 100 controls the liquid processing unit U1 and the heat processing unit U2 so as to form an upper layer film on the resist film of the workpiece W. After that, the control device 100 controls the transport device A3 to transport the workpiece W to the shelf unit U11.
- control device 100 controls the transport device A8 to send the work W on the shelf unit U11 to the exposure device 3. Thereafter, the control device 100 receives the workpiece W subjected to exposure processing using energy rays (for example, i-ray) from the exposure device 3, and controls the transporting device to place it in the cell for the processing module 14 in the shelf unit U11. Control A8.
- energy rays for example, i-ray
- control device 100 controls the transport device A3 to transport the workpiece W in the shelf unit U11 to each unit in the processing module 14, and controls the developing unit U3 and the heat processing unit to develop the resist film on the workpiece W. Controls unit U4. By developing the resist film, a resist pattern is formed on the surface of the workpiece W.
- control device 100 controls the transport device A3 to return the work W to the shelf unit U10, and controls the transport device A7 and the transport device A1 to return the work W to the carrier C. With the above steps, the coating and developing process for one workpiece W is completed.
- the control device 100 causes the coating and developing device 2 to perform the coating and developing process on each of the subsequent plurality of works W in the same manner as described above.
- An input/output device may be connected to the control device 100.
- the input/output device is a device for inputting input information indicating instructions from a user such as an operator into the control device 100, and outputting information from the control device 100 to the user.
- the input/output device may include a keyboard, an operation panel, or a mouse as an input device, and may include a monitor (for example, a liquid crystal display) as an output device.
- the specific configuration of the substrate processing apparatus is not limited to the configuration of the substrate processing system 1 illustrated above.
- the substrate processing apparatus may be of any type as long as it includes a developing unit that performs development on a substrate on which a resist film is formed, and a control device that can control the developing unit.
- the developing unit U3 of the processing module 14 will be described in detail with reference to FIGS. 3 and 4.
- the developing unit U3 includes a housing H, a holding rotation section 20, a developer supply section 30, a rinse liquid supply section 40 (supply section), and a gas supply section 50 (supply section). ), a cover member 70, and a blower B.
- the housing H accommodates the holding rotation unit 20, the developer supply unit 30, the rinsing liquid supply unit 40, the gas supply unit 50, the cover member 70, and the blower B.
- the holding/rotating unit 20 holds and rotates the workpiece W.
- the holding/rotating unit 20 is capable of holding the workpiece W without rotating it, or holding the workpiece W while rotating it.
- the holding rotation section 20 includes, for example, a rotation drive section 22, a shaft 24, and a holding section 26.
- the rotation drive unit 22 operates based on an operation instruction from the control device 100 and rotates the shaft 24.
- the rotation drive unit 22 includes a power source such as an electric motor, for example.
- the holding part 26 is provided at the tip of the shaft 24.
- a workpiece W is placed on the holding portion 26 .
- the holding portion 26 holds the workpiece W substantially horizontally, for example, by suction or the like.
- the holding/rotating unit 20 rotates the work W around an axis (rotation axis) perpendicular to the surface Wa of the work W while the work W is in a substantially horizontal posture.
- the holding part 26 may hold the workpiece W so that the rotation axis substantially coincides with the center CP of the workpiece W (see FIG. 4(a)).
- the developer supply unit 30 supplies the developer L1 to the surface Wa of the workpiece W held by the holding and rotating unit 20 (holding unit 26).
- the developer L1 is a chemical solution for developing a resist film (hereinafter referred to as "resist film R") formed on the surface Wa of the workpiece W.
- supplying a fluid such as a liquid or a gas (e.g., developer L1) to the surface Wa of the workpiece W means that it is applied to a film such as a resist film R or a liquid film formed on the surface Wa. This corresponds to bringing the fluid into contact with each other.
- the developer supply section 30 includes, for example, a liquid feeding section 32, a driving section 34, and a developing nozzle 36.
- the liquid feeding unit 32 sends the developer L1 stored in a container (not shown) to the developing nozzle 36 using a pump or the like (not shown).
- the drive unit 34 moves the developing nozzle 36 at least in the direction along the surface Wa of the workpiece W (horizontal direction) based on an operation instruction from the control device 100.
- the developing nozzle 36 is supported by an arm or the like (not shown).
- the drive unit 34 moves the developing nozzle 36 by moving the arm.
- the developing nozzle 36 discharges the developing solution L1 supplied from the liquid feeding section 32 toward the surface Wa of the workpiece W.
- the developer L1 when the developer L1 is discharged from the developing nozzle 36 toward the center of the workpiece W while the workpiece W is rotating, the developer L1 spreads over the surface Wa of the workpiece W using centrifugal force, and the developer L1 spreads over the surface Wa of the workpiece W.
- the developer L1 is supplied so as to cover the entire surface Wa.
- the developing nozzle 36 may be configured to discharge the developing solution L1 while moving from the center of the workpiece W toward the outer periphery, for example.
- the rinsing liquid supply section 40 supplies the rinsing liquid L2 to the peripheral area of the surface Wa of the workpiece W held by the holding and rotating section 20 (holding section 26). Water (for example, pure water) is used as the rinse liquid L2.
- the rinsing liquid supply section 40 includes a first rinsing liquid supply section 40A and a second rinsing liquid supply section 40B.
- the first rinsing liquid supply section 40A includes, for example, a liquid feeding section 42A, a driving section 44A, and a rinsing nozzle 46A.
- the liquid sending unit 42A sends out the rinsing liquid L2 stored in a container (not shown) to the rinsing nozzle 46A using a pump or the like (not shown).
- the drive unit 44A moves the rinse nozzle 46A based on an operation instruction from the control device 100.
- the rinse nozzle 46A is supported by, for example, an arm 47A shown in FIG. 4.
- the drive unit 44A may move the rinse nozzle 46A by moving the arm 47A.
- the rinse nozzle 46A is arranged above the surface Wa of the workpiece W. As shown in FIG. 4(a), the rinse nozzle 46A of the first rinse liquid supply section 40A extends in a direction along the rotational direction A of the work W in a plan view. Further, as shown in FIG. 4(c), the rinse nozzle 46A (extending direction of the rinse nozzle 46A) is inclined with respect to the surface Wa of the workpiece W in a side view.
- the angle of inclination of the rinse nozzle 46A with respect to the surface Wa is, for example, about 30° to 60°, and as an example, the angle of inclination is 45°. As a result, the rinse liquid L2 is discharged diagonally downward from the rinse nozzle 46A.
- the rinse nozzle 46A is arranged so that the discharged rinse liquid L2 is directed along the rotational direction A on the surface Wa of the workpiece W. That is, at the discharge position P1 where the rinse liquid L2 discharged from the rinse nozzle 46A contacts the surface Wa of the workpiece W, the discharge direction of the rinse liquid L2 is relative to the straight line connecting the discharge position P1 and the center CP of the workpiece W. The position of the rinse nozzle 46A is adjusted so that it is orthogonal to the rinsing nozzle 46A.
- the drive unit 44A may move the rinse nozzle 46A along the direction in which a straight line connecting the discharge position P1 and the center CP of the workpiece W extends. At this time, the drive unit 44A may move the rinse nozzle 46A so that the discharge position P1 moves on one straight line extending from the center CP of the workpiece W.
- the second rinsing liquid supply section 40B includes, for example, a liquid feeding section 42B, a driving section 44B, and a rinsing nozzle 46B.
- the liquid sending unit 42B sends out the rinsing liquid L2 stored in a container (not shown) to the rinsing nozzle 46B using a pump or the like (not shown).
- the drive unit 44B moves the rinse nozzle 46B based on an operation instruction from the control device 100. Rinse nozzle 46B is supported by arm 47B shown in FIG. The drive unit 44B may move the rinse nozzle 46B by moving the arm 47B.
- the rinse nozzle 46B is arranged above the surface Wa of the workpiece W. As shown in FIG. 4(a), the rinse nozzle 46B of the second rinse liquid supply section 40B extends in the radial direction of the workpiece W in plan view, and has a discharge port facing outward from the workpiece W. I'm on my way. Further, as shown in FIG. 4(b), the rinse nozzle 46B (extending direction of the rinse nozzle 46B) is inclined with respect to the surface Wa of the work W in a side view.
- the angle of inclination of the rinse nozzle 46B with respect to the surface Wa is, for example, about 30° to 60°, and as an example, the angle of inclination is 45°.
- the rinse liquid L2 is discharged diagonally downward from the rinse nozzle 46B.
- the rinse nozzle 46B is arranged so that the discharged rinse liquid L2 is on the surface Wa of the workpiece W in the radial direction of the workpiece W. That is, at the discharge position P2 where the rinse liquid L2 discharged from the rinse nozzle 46B contacts the surface Wa of the workpiece W, the discharge direction of the rinse liquid L2 is along the straight line connecting the discharge position P2 and the center CP of the workpiece W.
- the position of the rinse nozzle 46B is adjusted so that it extends toward the outside of the workpiece W.
- the drive unit 44B may move the rinse nozzle 46B along the direction in which a straight line connecting the discharge position P2 and the center CP of the workpiece W extends, that is, along the radial direction. At this time, the drive unit 44B moves the discharge position P2 on a straight line extending from the center CP of the workpiece W, and the rinse nozzle 46B itself moves on a straight line connecting the discharge position P2 and the center CP of the workpiece W. The rinse nozzle 46B may be moved so as to move the rinsing nozzle 46B.
- the gas supply unit 50 supplies a predetermined gas to the surface Wa of the workpiece W.
- the gas supplied by the gas supply unit 50 (hereinafter referred to as "gas G") may be an inert gas, and is nitrogen gas in one example.
- Gas G is used to remove the rinsing liquid L2 from the surface Wa of the workpiece W. After the developer L1 present on the workpiece W is washed away with the rinsing liquid L2, the gas G is supplied to the center CP of the workpiece W, so that the surface Wa of the workpiece W is exposed at the center of the surface Wa of the workpiece W. A region is formed. A circumferential gas-liquid interface is formed around the area where the surface Wa is exposed.
- the gas-liquid interface corresponds to the boundary between the region where the rinse liquid L2 remains and the region where the surface Wa is exposed.
- the gas supply section 50 includes, for example, a gas delivery section 52 and a gas nozzle 56.
- the gas delivery unit 52 sends gas G stored in a container (not shown) to a gas nozzle 56 using a pump or the like (not shown).
- the gas nozzle 56 may be arranged above the workpiece W, and may inject gas so as to spread in various directions (radially) as the distance from the gas nozzle 56 increases.
- the gas nozzle 56 may be formed with a plurality of ejection ports extending at different angles relative to the surface Wa of the workpiece W, for example.
- Gas nozzle 56 may be supported by arm 57 shown in FIG. At this time, the drive unit 54 may move the gas nozzle 56 by moving the arm 57.
- the gas nozzle 56 may be movable radially outward from the center CP of the workpiece W, for example.
- the gas nozzle 56 may be connected (fixed) to the rinse nozzle 46A or the rinse nozzle 46B.
- the drive unit 44A or 44B moves not only the rinse nozzle but also the gas nozzle 56 along the surface Wa.
- the cover member 70 is provided around the holding and rotating section 20.
- the cover member 70 includes, for example, a cup body 72, a drain port 74, and an exhaust port 76.
- the cup body 72 functions as a liquid collection container that receives the developer L1 and the rinse liquid L2 supplied to the workpiece W for liquid processing.
- the liquid drain port 74 is provided at the bottom of the cup body 72, and discharges the liquid collected by the cup body 72 to the outside of the developing unit U3.
- the exhaust port 76 is provided at the bottom of the cup body 72.
- the developing unit U3 has exhaust portions V1 and V2.
- the exhaust section V1 is provided at the lower part of the casing H, and discharges the gas inside the casing H by operating based on an operation instruction from the control device 100.
- the exhaust portion V1 may be, for example, a damper whose exhaust amount can be adjusted according to the degree of opening.
- the temperature, pressure, humidity, etc. within the housing H can be controlled by adjusting the amount of exhaust air from the housing H using the exhaust portion V1.
- the exhaust section V1 may be controlled to constantly exhaust the inside of the casing H during the liquid treatment on the workpiece W.
- the exhaust part V2 is provided at the exhaust port 76, and discharges the gas in the cup body 72 by operating based on an operation instruction from the control device 100.
- the downflow flowing around the workpiece W is discharged to the outside of the housing H of the developing unit U3 through the exhaust port 76 and the exhaust portion V2.
- the exhaust portion V2 may be, for example, a damper whose exhaust amount can be adjusted according to the degree of opening.
- the blower B is arranged above the holding rotation section 20 and the cover member 70 in the housing H of the developing unit U3. Blower B forms a downward flow toward cover member 70 based on an operation instruction from control device 100 .
- the blower B may be controlled to constantly form a downward flow during the liquid treatment on the workpiece W.
- the control device 100 has a storage unit 102 and a control unit 104 as functional configurations.
- the storage unit 102 stores a program for operating each part of the coating and developing device 2 including the developing unit U3.
- the storage unit 102 also stores various data (for example, information related to signals for operating the developing unit U3) and information from sensors provided in each part.
- the storage unit 102 is, for example, a semiconductor memory, an optical recording disk, a magnetic recording disk, or a magneto-optical recording disk.
- the program may also be included in an external storage device separate from the storage unit 102 or an intangible medium such as a propagation signal.
- the program may be installed in the storage unit 102 from these other media, and the program may be stored in the storage unit 102.
- the control unit 104 controls the operation of each part of the coating and developing device 2 based on the program read from the storage unit 102.
- the control unit 104 at least holds and rotates the work W in the holding/rotating unit 20 and continues discharging inert gas from the gas nozzle to the work W after the developer has been supplied.
- the control device 100 is composed of one or more control computers.
- the control device 100 includes a circuit 150 shown in FIG. Circuit 150 includes one or more processors 152, memory 154, storage 156, input/output ports 158, and timer 162.
- Storage 156 includes a computer-readable storage medium, such as a hard disk.
- the storage medium stores a program for causing the control device 100 to execute a substrate processing method to be described later.
- the storage medium may be a removable medium such as a nonvolatile semiconductor memory, a magnetic disk, or an optical disk.
- the memory 154 temporarily stores programs loaded from the storage medium of the storage 156 and the results of calculations by the processor 152.
- the processor 152 cooperates with the memory 154 to execute the above program.
- the input/output port 158 is connected to the holding rotation section 20, the developer supply section 30, the rinsing solution supply section 40 (the first rinsing solution supply section 40A and the second rinsing solution supply section 40B), and the exhaust section according to instructions from the processor 152. Electric signals are input/output between V1, V2, blower B, etc.
- the timer 162 measures elapsed time, for example, by counting reference pulses of a constant period.
- the hardware configuration of the control device 100 may include a dedicated logic circuit or an ASIC (Application Specific Integrated Circuit) that integrates the dedicated logic circuit.
- FIG. 6 is a flow diagram illustrating an overview of the liquid treatment performed on the workpiece W.
- control device 100 controls each part of the coating and developing device 2 to process the workpiece W in the processing modules 11 to 13, thereby forming a resist film R on the surface Wa of the workpiece W (step S01).
- control device 100 controls each part of the coating and developing device 2 to transport the work W from the processing module 13 to the exposure device 3 using the transport device A7 or the like.
- a control device different from the control device 100 controls the exposure device 3 to cause the exposure device 3 to expose the resist film R formed on the surface Wa of the workpiece W in a predetermined pattern (step S02 ).
- control device 100 controls each part of the coating and developing device 2 to transport the workpiece W from the exposure device 3 to the developing unit U3 of the processing module 14. Thereby, the workpiece W is held by the holding/rotating section 20 with the front surface Wa facing upward.
- control device 100 controls the developer supply section 30 of the development unit U3 to supply the developer L1 to the surface Wa of the workpiece W, that is, the upper surface of the resist film R (step S03).
- step S03 the control device 100 controls the developer supply unit 30 to move the developer nozzle 36 horizontally above the non-rotating workpiece W, and supplies the developer L1 from the developer nozzle 36 to the surface of the workpiece W. It may also be supplied towards Wa.
- the control device 100 may control the holding/rotating unit 20 and the developer supplying unit 30 to rotate the workpiece W by the holding/rotating unit 20 and move the developing nozzle 36 horizontally above the workpiece W while performing development.
- the developer L1 may be supplied from the nozzle 36 toward the surface Wa of the workpiece W. In this case, the developer L1 is supplied spirally from the center to the periphery of the workpiece W, or from the periphery to the center of the workpiece W.
- control device 100 controls the holding rotation unit 20 and the rinsing liquid supply unit 40 (the first rinsing liquid supply unit 40A and the second rinsing liquid supply unit 40B) to The rinsing liquid supply section 40 supplies the rinsing liquid L2 onto the upper surface of the liquid L1 (step S04).
- the control device 100 may move the rinse nozzle 46A so that the discharge position P1 of the rinse liquid L2 by the rinse nozzle 46A of the first rinse liquid supply section 40A substantially coincides with the center CP of the workpiece W. .
- the rinsing liquid L2 is supplied from the rinsing nozzle 46A while rotating the workpiece W, thereby spreading the rinsing liquid L2 over the entire surface Wa of the workpiece W.
- the control device 100 directs the rinsing liquid L2 from the rinsing nozzle 46A toward the surface Wa of the work W while rotating the work W by the holding/rotating unit 20 and moving the rinsing nozzle 46A horizontally above the work W. It may be supplied.
- the control device 100 may supply the rinse liquid L2 from both the rinse nozzle 46A of the first rinse liquid supply section 40A and the rinse nozzle 46B of the second rinse liquid supply section 40B.
- the control device 100 causes the gas supply section 50 to supply gas G from the gas nozzle 56 to the surface Wa of the rotating workpiece W, that is, to the upper surface of the rinsing liquid L2 remaining on the surface Wa, thereby removing the rinsing liquid L2. (Step S05).
- the control device 100 may move the gas nozzle 56 using the drive unit 54 so that the arrival position of the gas G2 substantially coincides with the center CP of the workpiece W at the time when the discharge of the gas G is started in step S05.
- step S05 the gas G is supplied from the gas nozzle 56, and the rinsing liquid L2 is continuously supplied from step S04. That is, the rinsing liquid L2 is removed from the surface Wa of the work W while simultaneously supplying the gas G and the rinsing liquid L2.
- the control device 100 starts (ON) the supply of gas G (nitrogen gas) from the gas nozzle 56 of the gas supply section 50.
- the control device 100 supplies the rinsing liquid L2 from the rinsing nozzle 46A of the first rinsing liquid supply section 40A along the rotational direction of the workpiece W, and supplies the rinsing liquid L2 from the rinsing nozzle 46B of the second rinsing liquid supply section 40B to the workpiece W.
- the supply of the rinsing liquid L2 along the direction toward the outer periphery is started (ON) (step S11).
- the gas nozzle 56 is arranged to discharge the gas G at the center CP of the workpiece W, as shown in FIG. 8(a).
- the rinse nozzle 46A that extends along the rotational direction and discharges the rinse liquid L2 in the rotational direction is arranged such that the discharge position P1 is located at a position spaced apart from the center CP by a distance r1 along the radial direction of the workpiece W. be done.
- the rinse nozzle 46B which extends along the radial direction of the workpiece W and discharges the rinse liquid L2 in the outer peripheral direction along the radial direction, discharges the rinse liquid L2 at a position spaced apart from the center CP by a distance r2 along the radial direction of the workpiece W.
- FIG. 8A schematically shows a state in which the distance r1 is set to 15 mm and the distance r2 is set to 30 mm.
- the control device 100 controls the amount of rinsing liquid L2 discharged from the rinse nozzle 46B (the amount of discharge per unit time) with respect to the amount of rinsing liquid L2 discharged from the rinse nozzle 46A (the amount of discharge per unit time). ) is adjusted to reduce the discharge amount.
- the discharge amount of the rinse liquid L2 from the rinse nozzle 46A is adjusted to 350 ml/min
- the discharge amount of the rinse liquid L2 from the rinse nozzle 46B is adjusted to 100 ml/min.
- FIG. 8B shows a state in which the gas nozzle 56 and the rinse nozzle 46A have been moved 15 mm toward the outer circumference of the workpiece W.
- the area to which the rinse liquid L2 is supplied moves in the outer circumferential direction.
- the region to which the gas G is supplied also moves toward the outer circumference.
- the gas-liquid interface D0 which is the boundary between the rinsing liquid L2 formed at the center of the workpiece W and the dry core region D, gradually moves toward the outer circumference. That is, as shown in FIG. 8(b), the dry core region D gradually expands from the center CP toward the outer periphery.
- the rinse nozzle 46B does not move at this stage, so in the state shown in FIG. 8(b), both the rinse nozzle 46A, which has moved 15 mm toward the outer circumferential direction, and the rinse nozzle 46B are at a position 30 mm away from the center CP. There will be. That is, the rinse nozzle 46A has moved to the same outer peripheral position as the rinse nozzle 46B.
- FIG. 8C schematically shows a state where the discharge of the rinse liquid L2 from the rinse nozzle 46A is stopped.
- the control device 100 may increase the discharge amount of the rinse liquid L2 from the rinse nozzle 46B to the same extent as the discharge amount from the rinse nozzle 46A (for example, 350 ml/min).
- the control device 100 may increase the discharge amount of the rinse liquid L2 from the rinse nozzle 46B to the same extent as the discharge amount from the rinse nozzle 46A (for example, 350 ml/min).
- the control device 100 moves the rinse nozzle 46B toward the outer circumference while continuing to discharge the gas G and the rinse liquid L2 (step S14).
- the gas nozzle 56 has moved 15 mm from the center CP of the workpiece W in the outer circumferential direction.
- the discharge position P2 of the rinse nozzle 46B is 30 mm (distance r2) away from the center CP of the workpiece W in the outer circumferential direction.
- the control device 100 performs rinsing until the difference between the distance between the discharge position of the gas G and the center CP of the workpiece W and the distance between the discharge position P2 of the rinsing liquid L2 and the center CP of the workpiece W becomes 30 mm. Only the nozzle 46B is moved. Here, by moving only the rinse nozzle 46B by 15 mm in the outer circumferential direction, the distance between the discharge position P2 of the rinse nozzle 46B and the discharge position of the gas G becomes 30 mm.
- the difference in distance from the center CP of the discharge position P2 of the rinse nozzle 46B and the discharge position of the gas G on the outer peripheral side of the workpiece W is the same as that of the discharge position P1 of the rinse nozzle 46A on the center side of the workpiece W. This is larger than the relationship with the gas G discharge position.
- FIG. 8(d) shows a state in which the gas nozzle 56 and the rinse nozzle 46B are moved toward the outer circumference of the workpiece W compared to the state shown in FIG. 8(c). From the state of step S14, the gas nozzle 56 and the rinse nozzle 46B are moved toward the outer circumference of the work W while maintaining the distances from the center CP of the discharge position P2 of the rinse nozzle 46B and the discharge position of the gas G on the work W. .
- the rinse nozzle 46B in the outer circumferential direction, the area to which the rinse liquid L2 is supplied moves in the outer circumferential direction. Furthermore, by moving the gas nozzle 56, the region to which the gas G is supplied also moves toward the outer circumference. As a result, the gas-liquid interface D0 of the workpiece W further moves toward the outer circumference. That is, as shown in FIG. 8(d), the dry core region D further expands toward the outer periphery, and the only region where the rinsing liquid L2 remains is the outer periphery.
- the gas nozzle 56 and the rinse nozzle 46A may be configured to be integrally movable.
- the control device 100 may also move the rinse nozzle 46A, to which the supply of the rinse liquid L2 has been stopped, together with the gas nozzle 56 in the outer circumferential direction.
- step S14 This process calculates the difference in distance from the center CP of the discharge position P2 of the rinse nozzle 46B on the outer peripheral side of the workpiece W and the discharge position of the gas G by the gas nozzle 56 from the rinse nozzle 46A on the center side of the workpiece W. This is a process to make it larger than the relationship with the gas nozzle 56.
- the discharge position P2 of the rinsing liquid L2 along the radial direction of the workpiece W and the discharge position of the gas G are separated by a certain distance (the distance between the discharge position of the gas G and the center CP of the workpiece W and the rinsing liquid L2 It is better to increase the difference between the distance between the discharge position P2 and the center CP of the work W, so that the rinsing liquid L2 is splashed by the gas G discharged from the gas nozzle 56 and scattered onto the dry core region D (splash). The possibility of this occurring can be reduced.
- step S14 the distance between the discharge position P2 of the rinsing liquid L2 and the discharge position of the gas G along the radial direction of the workpiece W is made larger on the outer peripheral side than on the center side of the workpiece W. This can prevent residues after processing from remaining on the surface Wa of the workpiece W.
- the rinse nozzle 46A is used to discharge the rinse liquid L2 in a direction along the rotational direction of the workpiece W, and further, the discharge position P1 of the rinse liquid L2 along the radial direction of the workpiece W and the gas
- the distance from the discharge position of G it is possible to move the gas-liquid interface D0 toward the outer circumference while suppressing interference fringes and splashing of the rinse liquid L2, which prevents residue from remaining after processing. is prevented.
- the gas nozzle 56, the rinse nozzle 46A, and the rinse nozzle 46B move independently. Therefore, as shown in FIG. 4 etc., the three nozzles are supported by mutually different arms and are movable independently.
- the gas nozzle 56 and the rinse nozzle 46A may be configured to be integrally movable. In this case, when moving the gas nozzle 56 in the outer circumferential direction in step S14, the control device 100 may also move the rinse nozzle 46A, to which the supply of the rinse liquid L2 has been stopped, together with the gas nozzle 56 in the outer circumferential direction.
- the supply section of the developing unit U3 has gas nozzles 56A and 56B (two gas nozzles).
- the gas nozzles 56A and 56B may each be connected to a gas delivery section, and gas G stored in the container may be supplied by a pump or the like.
- the gas nozzle 56A and the rinse nozzle 46A are supported by the first arm 61, and the gas nozzle 56B and the rinse nozzle 46B are supported by the second arm 62. At this time, the gas nozzles 56A and 56B are both arranged so as to be able to discharge the gas G to the center CP of the workpiece W.
- FIG. 10A shows an example in which the discharge ports of the gas nozzles 56A and 56B overlap in plan view, the arrangement of the two nozzles can be changed as appropriate.
- the rinse nozzle 46A provided on the first arm 61 is arranged such that the discharge position P1 is located at a position spaced apart from the center CP by a distance r1 along the radial direction of the workpiece W. That is, in the first arm 61, the discharge position of the gas nozzle 56A and the discharge position P1 of the rinse nozzle 46A are arranged at a distance r1 along the radial direction of the workpiece W.
- the rinse nozzle 46B provided on the second arm 62 is arranged such that the discharge position P2 is located at a distance r2 from the center CP along the radial direction of the workpiece W.
- the control device 100 executes the following procedure.
- the control device 100 starts (ON) the supply of gas G (nitrogen gas) from the gas nozzle 56A of the first arm 61 and the gas nozzle 56B of the second arm 62.
- the control device 100 supplies the rinsing liquid L2 from the rinsing nozzle 46A of the first arm 61 along the rotational direction of the workpiece W, and from the rinsing nozzle 46B of the second arm 62 in the direction toward the outer periphery of the workpiece W.
- the supply of the rinsing liquid L2 is started (ON) (step S21). As shown in FIG.
- the gas nozzles 56A and 56B are arranged so as to discharge the gas G at the center CP of the workpiece W.
- the rinse nozzle 46A that extends along the rotational direction and discharges the rinse liquid L2 in the rotational direction is arranged such that the discharge position P1 is located at a position spaced apart from the center CP by a distance r1 along the radial direction of the workpiece W. be done.
- the rinse nozzle 46B which extends along the radial direction of the workpiece W and discharges the rinse liquid L2 in the outer peripheral direction along the radial direction, discharges the rinse liquid L2 at a position spaced apart from the center CP by a distance r2 along the radial direction of the workpiece W. It is arranged so that position P2 is located.
- a dry core region D is formed as shown in FIG.
- An interface D0 is formed.
- the amount of rinsing liquid L2 discharged from the rinse nozzle 46B (the amount of discharge per unit time) is smaller than the amount of rinsing liquid L2 discharged from the rinse nozzle 46A (the amount of discharge per unit time). Adjust the discharge amount so that As an example, the discharge amount of the rinse liquid L2 from the rinse nozzle 46A is adjusted to 350 ml/min, and the discharge amount of the rinse liquid L2 from the rinse nozzle 46B is adjusted to 100 ml/min.
- FIG. 10(b) shows a state in which the first arm 61 has been moved 15 mm toward the outer circumference of the workpiece W.
- the area to which the rinse liquid L2 is supplied moves in the outer circumferential direction.
- the region to which the gas G is supplied also moves toward the outer circumference.
- the gas-liquid interface D0 which is the boundary between the rinsing liquid L2 formed at the center of the workpiece W and the dry core region D, gradually moves toward the outer circumference. That is, as shown in FIG. 10(b), the dry core region D gradually expands from the center CP toward the outer periphery. Note that the gas nozzle 56B and rinse nozzle 46B of the second arm 62 do not move at this stage.
- the control device 100 stops (turns off) the discharge of the rinse liquid L2 from the rinse nozzle 46A (step S23).
- the discharge of gas G from the gas nozzle 56A may also be stopped.
- FIG. 10C schematically shows a state in which the discharge of the rinse liquid L2 from the rinse nozzle 46A and the discharge of the gas G from the gas nozzle 56A are stopped.
- the discharge amount of the rinse liquid L2 from the rinse nozzle 46B is increased (UP) to the same extent as the discharge amount from the rinse nozzle 46A (for example, 350 ml/min).
- FIG. 10(d) shows a state in which the second arm 62 (gas nozzle 56B and rinse nozzle 46B) is moved toward the outer circumference of the workpiece W, compared to the state shown in FIG. 10(c).
- the region to which the rinse liquid L2 is supplied and the region to which the gas G is supplied moves in the outer circumferential direction.
- the gas-liquid interface D0 of the workpiece W moves toward the outer circumference. That is, as shown in FIG.
- the dry core region D further expands toward the outer periphery, and the only region in which the rinsing liquid L2 remains is the outer periphery.
- the gas G removes all of the rinse liquid L2 from the surface Wa of the workpiece W together with the resist dissolved by the reaction with the developer L1. .
- the entire surface Wa of the workpiece W becomes a dry core region D, and a resist pattern formed by development appears.
- the gas nozzles 56A and 56B move following the movement of the rinse nozzles 46A and 46B, respectively, so that the distance between the rinse nozzle and the gas nozzle is reduced. Distance is maintained. That is, the rinse nozzle can be moved in the outer circumferential direction while the discharge position of the rinse liquid L2 and the discharge position of the gas G are maintained in each of the first arm 61 and the second arm 62.
- the control device 100 may perform control to gradually change the discharge amount of the gas nozzles 56A, 56B.
- Example of changing the procedure for removing rinse liquid L2-2 A second modification of the procedure for removing the rinse liquid L2 in step S05 will be described with reference to FIGS. 11 and 12.
- This modified example differs from the example described in FIGS. 7 and 8 in that the gas nozzle 56 does not move. Specifically, the gas nozzle 56 is fixed to the center CP of the workpiece W.
- the control device 100 starts (ON) the supply of gas G (nitrogen gas) from the gas nozzle 56 of the gas supply section 50.
- the control device 100 supplies the rinsing liquid L2 from the rinsing nozzle 46A of the first rinsing liquid supply section 40A along the rotational direction of the workpiece W, and supplies the rinsing liquid L2 from the rinsing nozzle 46B of the second rinsing liquid supply section 40B to the workpiece W.
- the supply of the rinsing liquid L2 along the direction toward the outer periphery is started (ON) (step S31).
- the gas nozzle 56 is arranged so as to discharge the gas G at the center CP of the workpiece W, as shown in FIG. 12(a). Further, the rinse nozzle 46A that extends along the rotational direction and discharges the rinse liquid L2 in the rotational direction is arranged such that the discharge position P1 is located at a position spaced apart from the center CP by a distance r1 along the radial direction of the workpiece W. be done.
- the rinse nozzle 46B which extends along the radial direction of the workpiece W and discharges the rinse liquid L2 in the outer peripheral direction along the radial direction, discharges the rinse liquid L2 at a position spaced apart from the center CP by a distance r2 along the radial direction of the workpiece W. It is arranged so that position P2 is located.
- the rinsing liquid L2 is gradually removed from the center to form a dry core region D in which the surface Wa of the workpiece W is exposed, as shown in FIG. 12(a). Ru.
- a gas-liquid interface D0 is formed at the boundary between the region where the rinsing liquid L2 remains and the dry core region D.
- the rinse nozzle 46A is arranged inside the rinse nozzle 46B. That is, the relationship r1 ⁇ r2 holds.
- the distance r1 may be set, for example, to 10 to 25 mm, and the distance r2 may be set to 20 mm to 50 mm.
- FIG. 12A schematically shows a state in which the distance r1 is set to 15 mm and the distance r2 is set to 30 mm.
- the control device 100 controls the amount of rinsing liquid L2 discharged from the rinse nozzle 46B (the amount of discharge per unit time) with respect to the amount of rinsing liquid L2 discharged from the rinse nozzle 46A (the amount of discharge per unit time). ) is adjusted to reduce the discharge amount.
- the discharge amount of the rinse liquid L2 from the rinse nozzle 46A is adjusted to 350 ml/min
- the discharge amount of the rinse liquid L2 from the rinse nozzle 46B is adjusted to 100 ml/min.
- FIG. 12(b) shows a state in which the rinse nozzle 46A has been moved 15 mm toward the outer circumference of the workpiece W.
- the area to which the rinse liquid L2 is supplied moves in the outer circumferential direction.
- the gas-liquid interface D0 which is the boundary between the rinsing liquid L2 formed at the center of the workpiece W and the dry core region D, gradually moves toward the outer periphery. That is, as shown in FIG. 12(b), the dry core region D gradually expands from the center CP to the outer peripheral side. Even if the gas nozzle 56 does not move, by moving the discharge position of the rinse liquid L2 from the rinse nozzle 46A toward the outer circumference, the gas-liquid interface D0 also moves toward the outer circumference.
- FIG. 12C schematically shows a state where the discharge of the rinse liquid L2 from the rinse nozzle 46A is stopped.
- the control device 100 may increase the discharge amount of the rinse liquid L2 from the rinse nozzle 46B to the same extent as the discharge amount from the rinse nozzle 46A (for example, 350 ml/min).
- the control device 100 may increase the discharge amount of the rinse liquid L2 from the rinse nozzle 46B to the same extent as the discharge amount from the rinse nozzle 46A (for example, 350 ml/min).
- FIG. 12(d) shows a state in which the rinse nozzle 46B is moved toward the outer circumference of the workpiece W compared to the state shown in FIG. 12(c).
- the area to which the rinse liquid L2 is supplied moves in the outer circumferential direction.
- the gas-liquid interface D0 of the workpiece W further moves toward the outer circumference. That is, as shown in FIG. 12(d), the dry core region D further expands toward the outer periphery, and the only region where the rinsing liquid L2 remains is the outer periphery.
- the gas G removes all of the rinse liquid L2 from the surface Wa of the workpiece W together with the resist dissolved by the reaction with the developer L1. As a result, the entire surface Wa of the workpiece W becomes a dry core region D, and a resist pattern formed by development appears.
- the gas nozzle 56, the rinse nozzle 46A, and the rinse nozzle 46B basically operate independently. Therefore, fine control may be possible by operating these nozzles individually.
- the control device 100 may increase the amount of gas G discharged from the gas nozzle 56 as the distance between the gas nozzle 56 and the rinse nozzle 46 increases. Further, similarly to the first modification example shown in FIGS.
- the supply section of the developing unit U3 is provided with a second gas nozzle that is movable integrally with the rinse nozzle 46B, and these are integrated into one arm. It may also have a configuration in which it operates in With such a configuration, the distance between the discharge position P2 of the rinse liquid L2 and the discharge position of the gas G can be reduced on the outer peripheral side of the workpiece W, that is, at the stage of forming the gas-liquid interface D0 by the rinse nozzle 46B and the gas nozzle. can be kept constant, and the rinsing liquid L2 can be effectively removed.
- the rinsing liquid is supplied from the rinsing nozzles 46A and 46B while continuing to discharge inert gas from the gas nozzle 56 to the workpiece W after the developer has been supplied.
- the discharge position of the workpiece W is moved from the center of the workpiece W toward the outer circumference.
- the gas-liquid interface D0 formed by the inert gas and the rinsing liquid L2 can be moved from the center toward the outer periphery.
- the discharge direction of the rinse liquid L2 is switched from the direction along the rotational direction of the workpiece W to the direction along the radial direction. .
- the discharge direction of the rinse liquid from the rinse nozzle is along the rotational direction of the work W, thereby suppressing the generation of residue after the rinse liquid is removed. be done.
- the discharge direction of the rinse liquid from the rinse nozzle is along the radial direction of the workpiece W, so that the generation of residue after the rinse liquid is removed is suppressed. Therefore, by switching to the discharge direction of the rinsing liquid as described above when moving the gas-liquid interface D0 toward the outer circumference, it is possible to reduce the residue on the surface of the work W after cleaning the work W. .
- the first arm 61 provided with the first rinse nozzle 46A and the first gas nozzle 56A, and the second rinse nozzle 46B. and a second arm 62 provided with a second gas nozzle 56B.
- the inert gas and rinse liquid are discharged from the first arm 61 whose discharge direction of the rinse liquid from the first rinse nozzle 46A is along the rotational direction of the workpiece W.
- an inert gas and a rinsing liquid are supplied from the second arm 62 whose discharge direction of the rinsing liquid from the second rinsing nozzle 46B is along the radial direction of the substrate.
- the gas nozzle 56, the first rinse nozzle 46A, and the second rinse nozzle may be provided on an arm that is movable independently of each other.
- the direction of the rinsing liquid discharged from the first rinsing nozzle 46A is along the rotation of the workpiece W
- the direction of the rinsing liquid discharged from the nozzle of the second rinsing nozzle 46B is the direction along the rotation of the workpiece W.
- the direction may be along the radial direction of W.
- the control device 100 sets a first state in which a gas-liquid interface D0 is formed by supplying the rinsing liquid from the first rinsing nozzle 46A closer to the center of the workpiece W than the predetermined switching position, and switches.
- the state is switched to a second state in which a gas-liquid interface D0 is formed.
- the gas nozzle 56 may be moved in the outer circumferential direction in response to the movement of the rinse nozzles 46A, 46B in the outer circumferential direction in the first state and the second state.
- the air-liquid interface D0 is formed by supplying the rinsing liquid from the first rinsing nozzle 46A whose discharge direction is along the rotational direction of the substrate. Ru.
- a gas-liquid interface D0 is formed by supplying the rinsing liquid from the second rinsing nozzle 46B whose discharge direction is along the radial direction of the substrate. Therefore, with the above configuration, it is possible to reduce the residue on the surface of the work W after cleaning the work W.
- a gas nozzle 56A as a first gas nozzle whose discharge position is fixed at the center of the workpiece W, a first arm provided with a first rinse nozzle 46A, a second rinse nozzle 46B and a second gas nozzle are provided. and a second arm provided with a gas nozzle 56B.
- the direction of the rinsing liquid discharged from the first rinsing nozzle 46A is along the rotation of the workpiece W
- the direction of the rinsing liquid discharged from the nozzle of the second rinsing nozzle 46B is the direction along the rotation of the workpiece W.
- the direction may be along the radial direction of W.
- the control device 100 supplies the rinsing liquid from the first rinsing nozzle 46A while supplying the inert gas from the first gas nozzle 56A closer to the center of the workpiece W than the predetermined switching position.
- the first state may be in which the gas-liquid interface D0 is formed.
- the inert gas and the rinsing liquid may be supplied while moving the second arm to switch to the second state in which the gas-liquid interface D0 is formed.
- the air-liquid interface D0 is formed by supplying the rinsing liquid from the first rinsing nozzle 46A whose discharge direction is along the rotational direction of the substrate. Ru.
- a gas-liquid interface D0 is formed by supplying the rinsing liquid from the second rinsing nozzle 46B whose discharge direction is along the radial direction of the substrate. Therefore, with the above configuration, it is possible to reduce the residue on the surface of the work W after cleaning the work W.
- the supply unit includes a first gas nozzle whose discharge position is fixed at the center of the workpiece W, and a first arm provided with a first rinse nozzle that can change the direction of the rinse liquid to be discharged. It may also be a configuration.
- the control device 100 changes the direction of the rinse liquid discharged from the first rinse nozzle from the direction along the rotational direction of the workpiece W to the direction of the substrate. It may also be changed gradually along the radial direction.
- the air-liquid interface D0 is formed by supplying the rinsing liquid from the first rinsing nozzle 46A whose discharge direction is along the rotational direction of the substrate. Ru.
- a gas-liquid interface D0 is formed by supplying the rinsing liquid from the second rinsing nozzle 46B whose discharge direction is along the radial direction of the substrate. Therefore, with the above configuration, it is possible to reduce the residue on the surface of the work W after cleaning the work W.
- the rinsing liquid in the coating and developing device 2 as a substrate processing device, in the first state, the rinsing liquid may also be discharged from the second rinsing nozzle 46B. Furthermore, in the second state, the discharge of the rinse liquid from the first rinse nozzle 46A may be stopped, and the amount of rinse liquid discharged from the second rinse nozzle 46B may be increased compared to the first state. With the above configuration, in the first state, the rinsing liquid is also discharged from the second rinsing nozzle, thereby promoting movement of the rinsing liquid from near the center of the substrate toward the outer circumference. On the other hand, in the second state, the discharge of the rinse liquid from the first rinse nozzle is stopped, so by increasing the discharge amount of the rinse liquid from the second rinse nozzle, the movement of the rinse liquid in the outer circumferential direction is prevented. It can be promoted.
- control device 100 may be configured to stop the discharge of gas from the first gas nozzle 56A in the second state.
- the distance between the discharge position of the rinse liquid from the first rinse nozzle on the work W in the first state and the discharge position of gas from the gas nozzle on the work W in the second state is The distance may be smaller than the distance between the discharge position of the rinsing liquid from the second gas nozzle and the discharge position of the gas from the second gas nozzle.
- the distance between the discharge position of the rinsing liquid from the first rinse nozzle 46A on the first arm 61 and the discharge position of the gas from the first gas nozzle 56A on the second arm 62 is The distance may be smaller than the distance between the discharge position of the rinse liquid from the second rinse nozzle 46B and the discharge position of the gas from the second gas nozzle 56B.
- the discharge amount of the rinse liquid L2 and the discharge amount of the gas G may be changed stepwise or continuously.
- the discharge amount of the rinse liquid L2 and the discharge amount of the gas G may be adjusted as appropriate. Further, the rotation speed of the workpiece W, etc. may be adjusted as appropriate.
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Abstract
Description
以下、図面を参照して種々の例示的実施形態について詳細に説明する。なお、各図面において同一又は相当の部分に対しては同一の符号を附すこととする。
図1に示される基板処理システム1(基板処理装置)は、ワークWに対し、感光性被膜の形成、当該感光性被膜の露光、及び当該感光性被膜の現像を施すシステムである。処理対象のワークWは、例えば基板、あるいは所定の処理が施されることで膜又は回路等が形成された状態の基板である。当該基板は、一例として、シリコンウェハである。ワークW(基板)は、円形であってもよい。ワークWは、ガラス基板、マスク基板、又はFPD(Flat Panel Display)などであってもよい。感光性被膜は、例えばレジスト膜である。
図3及び図4を参照して、処理モジュール14の現像ユニットU3について詳細に説明する。現像ユニットU3は、例えば、図3に示されるように、筐体Hと、保持回転部20と、現像液供給部30と、リンス液供給部40(供給部)と、ガス供給部50(供給部)と、カバー部材70と、ブロアBとを有する。筐体Hは、保持回転部20、現像液供給部30、リンス液供給部40、ガス供給部50、カバー部材70、及びブロアBを収容する。
図2に示されるように、制御装置100は、機能上の構成として、記憶部102と制御部104とを有する。記憶部102は、現像ユニットU3を含む塗布現像装置2の各部を動作させるためのプログラムを記憶している。記憶部102は、各種のデータ(例えば、現像ユニットU3を動作させるための信号に係る情報)、及び各部に設けられたセンサ等からの情報も記憶している。記憶部102は、例えば半導体メモリ、光記録ディスク、磁気記録ディスク、又は光磁気記録ディスクである。当該プログラムは、記憶部102とは別体の外部記憶装置、又は伝播信号などの無形の媒体にも含まれ得る。これらの他の媒体から記憶部102に当該プログラムをインストールして、記憶部102に当該プログラムを記憶させてもよい。
続いて、図6~図8を参照しながら、基板処理方法の一例として、制御装置100が実行する一連の処理について説明する。図6は、ワークWに対して行われる液処理の概要を説明するフロー図である。
ステップS05におけるリンス液L2の除去の手順について、図7及び図8を参照しながら説明する。
上記の手順では、3つのノズル(ガスノズル56、リンスノズル46A及びリンスノズル46B)が互いに異なるアームによって支持されている場合について説明した。したがって、ステップS13においてリンスノズル46Aからのリンス液L2の吐出を停止した後、ステップS14においてリンスノズル46Bのみを外周方向へ移動させるステップが存在する。すなわち、ステップS14においてワークWの径方向に沿ったリンス液L2の吐出位置P2とガスGの吐出位置との距離が大きくなるように調整されている。これに対して、2つのガスノズルを準備し、1つのガスノズルと1つのリンスノズルとを1つのアームに対して取り付ける構成とすることで、当初からリンス液L2の吐出位置とガスGの吐出位置との位置関係を固定する。このような2つのアームを含む構成で、図7,図8に示す手順と同様の手順を実行しようとすると、ステップS14に示すようにリンスノズル46Bのみを移動させるステップを省略することができる。以下、図9及び図10を参照しながらその具体的な手順について第1の変更例として説明する。
ステップS05におけるリンス液L2の除去の手順の第2の変更例について、図11及び図12を参照しながら説明する。この変更例では、図7及び図8で説明した例と比較して、ガスノズル56が移動しない点が相違する。具体的には、ガスノズル56はワークWの中央CPに固定された状態となっている。
上記の基板処理装置としての塗布現像装置2では、現像液が供給された後のワークWに対して、ガスノズル56からの不活性ガスの吐出を継続しながら、リンスノズル46A,46Bからのリンス液の吐出位置をワークWの中心から外周方向へと移動させる。これにより、不活性ガスとリンス液L2により形成される気液界面D0を中心から外周方向へと移動させることができる。このとき、ワークWの中心側から外周側へのリンスノズル46A,46Bの移動の際に、リンス液L2の吐出方向がワークWの回転方向に沿った方向から径方向に沿った方向へ切り替えられる。ワークWの中心側では、気液界面を形成する際に、リンスノズルからのリンス液の吐出方向がワークWの回転方向に沿った方向であることによって、リンス液除去後の残渣の発生が抑制される。一方、ワークWの外周側では、リンスノズルからのリンス液の吐出方向がワークWの径方向に沿った方向であることによって、リンス液除去後の残渣の発生が抑制される。したがって、気液界面D0を外周方向へ移動させる際に、上記のようにリンス液の吐出方向へ切り替える構成とすることで、ワークWを洗浄した後のワークW表面の残渣を低減することができる。
Claims (14)
- 基板を処理する基板処理装置であって、
前記基板を保持して回転させる保持回転部と、
現像液が供給された後の前記基板に対して不活性ガスを供給する少なくとも1つのガスノズルと、前記ガスノズルによるガス供給位置よりも外周側に設けられた吐出位置において前記基板に対してリンス液を供給する少なくとも1つのリンスノズルと、を含む供給部と、
制御部と、
を備え、
前記制御部は、
前記ガスノズルからの前記不活性ガスの吐出を継続しながら、前記リンスノズルからの前記リンス液の吐出位置を前記基板の中心から外周方向へと移動させることにより、前記不活性ガスと前記リンス液により形成される気液界面を前記中心から外周方向へと移動させ、
前記基板の中心側から外周側への前記リンスノズルの移動の際に、前記リンスノズルから吐出される前記リンス液の方向を、前記基板の回転方向に沿った方向から前記基板の径方向に沿った方向へ切り替える、基板処理装置。 - 前記供給部は、第1リンスノズル及び第1ガスノズルが設けられた第1アームと、第2リンスノズル及び第2ガスノズルが設けられた第2アームと、を有し、
前記第1リンスノズルから吐出されるリンス液の方向は、前記基板の回転方向に沿った方向であり、
前記第2リンスノズルから吐出されるリンス液の方向は、前記基板の径方向に沿った方向であり、
前記制御部は、所定の切り替わり位置よりも前記基板の中心側において前記第1アームを移動させながら前記不活性ガス及び前記リンス液の供給を行うことで前記気液界面を形成する第1の状態から、前記切り替わり位置よりも前記基板の外周側において前記第2アームを移動させながら前記不活性ガス及び前記リンス液の供給を行うことで前記気液界面を形成する第2の状態へ切り替える、請求項1に記載の基板処理装置。 - 前記制御部は、
前記第1の状態において、前記第2リンスノズルからも前記リンス液を吐出させ、
前記第2の状態において、前記第1リンスノズルからの前記リンス液の吐出を停止させると共に、前記第2リンスノズルからの前記リンス液の吐出量を前記第1の状態と比べて増加させる、請求項2に記載の基板処理装置。 - 前記制御部は、前記第2の状態において、前記第1ガスノズルからの前記ガスの吐出を停止させる、請求項3に記載の基板処理装置。
- 前記第1アームにおける前記第1リンスノズルからの前記リンス液の吐出位置と前記第1ガスノズルからの前記ガスの吐出位置との距離は、前記第2アームにおける前記第2リンスノズルからの前記リンス液の吐出位置と前記第2ガスノズルからの前記ガスの吐出位置との距離よりも小さい、請求項2~4のいずれか一項に記載の基板処理装置。
- 前記供給部は、ガスノズルと、第1リンスノズルと、第2リンスノズルと、が互いに独立して移動可能なアームに設けられていて、
前記第1リンスノズルから吐出されるリンス液の方向は、前記基板の回転方向に沿った方向であり、
前記第2リンスノズルから吐出されるリンス液の方向は、前記基板の径方向に沿った方向であり、
前記制御部は、所定の切り替わり位置よりも前記基板の中心側において前記第1リンスノズルからの前記リンス液の供給を行うことで前記気液界面を形成する第1の状態から、前記切り替わり位置よりも前記基板の外周側において前記第2リンスノズルからの前記リンス液の供給を行うことで前記気液界面を形成する第2の状態へ切り替えると共に、前記第1の状態及び前記第2の状態において前記外周方向への前記リンスノズルの移動に対応させて前記ガスノズルを前記外周方向へ移動させる、請求項1に記載の基板処理装置。 - 前記制御部は、
前記第1の状態において、前記第2リンスノズルからも前記リンス液を吐出させ、
前記第2の状態において、前記第1リンスノズルからの前記リンス液の吐出を停止させると共に、前記第2リンスノズルからの前記リンス液の吐出量を前記第1の状態と比べて増加させる、請求項6に記載の基板処理装置。 - 前記第1の状態における、前記基板上での前記第1リンスノズルからの前記リンス液の吐出位置と前記ガスノズルからの前記ガスの吐出位置との距離は、前記第2の状態における、前記基板上での前記第2リンスノズルからの前記リンス液の吐出位置と前記ガスノズルからの前記ガスの吐出位置との距離よりも小さい、請求項6または7に記載の基板処理装置。
- 前記供給部は、前記基板の中央に吐出位置が固定された第1ガスノズルと、第1リンスノズルが設けられた第1アームと、第2リンスノズル及び第2ガスノズルが設けられた第2アームと、を有し、
前記第1リンスノズルから吐出されるリンス液の方向は、前記基板の回転方向に沿った方向であり、
前記第2リンスノズルから吐出されるリンス液の方向は、前記基板の径方向に沿った方向であり、
前記制御部は、所定の切り替わり位置よりも前記基板の中心側において前記第1ガスノズルから不活性ガスの供給をしながら前記第1アームを移動させながら前記第1リンスノズルからの前記リンス液の供給を行うことで前記気液界面を形成する第1の状態から、前記切り替わり位置よりも前記基板の外周側において、前記第2アームを移動させながら前記不活性ガス及び前記リンス液の供給を行うことで前記気液界面を形成する第2の状態へ切り替える、請求項1に記載の基板処理装置。 - 前記制御部は、
前記第1の状態において、前記第2リンスノズルからも前記リンス液を吐出させ、
前記第2の状態において、前記第1リンスノズルからの前記リンス液の吐出を停止させると共に、前記第2リンスノズルからの前記リンス液の吐出量を前記第1の状態と比べて増加させる、請求項9に記載の基板処理装置。 - 前記第1の状態における、前記基板上での前記第1リンスノズルからの前記リンス液の吐出位置と前記ガスノズルからの前記ガスの吐出位置との距離は、前記第2の状態における、前記基板上での前記第2リンスノズルからの前記リンス液の吐出位置と前記第2ガスノズルからの前記ガスの吐出位置との距離よりも小さい、請求項9または10に記載の基板処理装置。
- 前記供給部は、前記基板の中央に吐出位置が固定された第1ガスノズルと、吐出するリンス液の方向を変化させることが可能な第1リンスノズルが設けられた第1アームと、を有し、
前記制御部は、前記外周方向への前記第1リンスノズルの移動の際に、前記第1リンスノズルから吐出される前記リンス液の方向を、前記基板の回転方向に沿った方向から前記基板の径方向に沿った方向へ徐々に変化させる、請求項1に記載の基板処理装置。 - 基板を処理する基板処理方法であって、
保持回転部において前記基板を保持して回転させることと、
現像液が供給された後の前記基板に対してガスノズルからの不活性ガスの吐出を継続しながら、前記ガスノズルによるガス供給位置よりも外周側に設けられた吐出位置において前記基板に対してリンス液を供給するリンスノズルからのリンス液の吐出位置を前記基板の中心から外周方向へと移動させることにより、前記不活性ガスと前記リンス液により形成される気液界面を前記中心から外周方向へと移動させることと、
を含み、
前記移動させることにおいて、前記基板の中心側から外周側への前記リンスノズルの移動の際に、前記リンスノズルから吐出される前記リンス液の方向を、前記基板の回転方向に沿った方向から前記基板の径方向に沿った方向へ切り替える、基板処理方法。 - 基板処理をコンピュータに実行させる基板処理プログラムであって、
保持回転部において前記基板を保持して回転させることと、
現像液が供給された後の前記基板に対してガスノズルからの不活性ガスの吐出を継続しながら、前記ガスノズルによるガス供給位置よりも外周側に設けられた吐出位置において前記基板に対してリンス液を供給するリンスノズルからのリンス液の吐出位置を前記基板の中心から外周方向へと移動させることにより、前記不活性ガスと前記リンス液により形成される気液界面を前記中心から外周方向へと移動させることと、
を前記コンピュータに実行させ、
前記移動させることにおいて、前記基板の中心側から外周側への前記リンスノズルの移動の際に、前記リンスノズルから吐出される前記リンス液の方向を、前記基板の回転方向に沿った方向から前記基板の径方向に沿った方向へ切り替える、基板処理プログラム。
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