WO2008026593A1 - Dispositif d'exposition, procédé de fabrication de dispositif, procédé de nettoyage et élément de nettoyage - Google Patents
Dispositif d'exposition, procédé de fabrication de dispositif, procédé de nettoyage et élément de nettoyage Download PDFInfo
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- WO2008026593A1 WO2008026593A1 PCT/JP2007/066673 JP2007066673W WO2008026593A1 WO 2008026593 A1 WO2008026593 A1 WO 2008026593A1 JP 2007066673 W JP2007066673 W JP 2007066673W WO 2008026593 A1 WO2008026593 A1 WO 2008026593A1
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- Prior art keywords
- liquid
- substrate
- exposure apparatus
- predetermined
- cleaning
- Prior art date
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Classifications
-
- 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
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2041—Exposure; Apparatus therefor in the presence of a fluid, e.g. immersion; using fluid cooling 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
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70216—Mask projection systems
- G03F7/70341—Details of immersion lithography aspects, e.g. exposure media or control of immersion liquid supply
-
- 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
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/708—Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
- G03F7/7085—Detection arrangement, e.g. detectors of apparatus alignment possibly mounted on wafers, exposure dose, photo-cleaning flux, stray light, thermal load
-
- 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
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/708—Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
- G03F7/70858—Environment aspects, e.g. pressure of beam-path gas, temperature
- G03F7/70866—Environment aspects, e.g. pressure of beam-path gas, temperature of mask or workpiece
-
- 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
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/708—Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
- G03F7/70908—Hygiene, e.g. preventing apparatus pollution, mitigating effect of pollution or removing pollutants from apparatus
- G03F7/70925—Cleaning, i.e. actively freeing apparatus from pollutants, e.g. using plasma cleaning
Definitions
- Exposure apparatus device manufacturing method, cleaning method, and cleaning member
- the present invention relates to an exposure apparatus that exposes a substrate, a device manufacturing method, a cleaning method for an exposure apparatus, and a cleaning member.
- an immersion space is formed so as to fill an optical path space of exposure light with a liquid as disclosed in the following patent document, and the substrate is formed via the liquid.
- Immersion exposure equipment for exposure is known!
- Patent Document 1 International Publication No. 99/49504 Pamphlet
- Patent Document 2 JP 2004-289127 A
- An object of an aspect of the present invention is to provide an exposure apparatus that can suppress performance degradation due to contamination, and a device manufacturing method using the exposure apparatus. Another object is to provide a cleaning method and a cleaning member capable of satisfactorily tiling the exposure apparatus in order to suppress deterioration of the performance of the exposure apparatus due to contamination.
- the first liquid in the exposure apparatus that exposes the substrate with the exposure light, can form the liquid immersion portion so that the optical path of the exposure light is filled with the first liquid.
- the second member which is disposed apart from the first member and can form the liquid immersion part with the second liquid between the predetermined member and the second liquid between the second member and the predetermined member, vibrates. Vibration generating device An exposure apparatus is provided.
- an exposure apparatus that exposes a substrate with exposure light through a liquid, a flexible member, a drive device that moves the flexible member, and a tip of the flexible member And an observation device that can observe the contamination state of a predetermined member that is in contact with the liquid, and an output device that is provided on the rear end side of the flexible member and outputs the observation result of the observation device.
- An exposure apparatus is provided.
- an exposure apparatus in the exposure apparatus that exposes the substrate with the exposure light through the first liquid, the exposure light (the optical element through which the exposure light passes and the optical element moves on the light emission side)
- An exposure apparatus includes a possible predetermined member and a vibration generator that vibrates the liquid on the predetermined member by vibrating the predetermined member.
- a device can be manufactured using an exposure apparatus in which deterioration of performance is suppressed.
- a predetermined member cleaning method for an exposure apparatus that exposes a substrate with exposure light via a first liquid, the predetermined member being separated from the optical path of the exposure light.
- a cleaning method including forming a liquid immersion part with a second liquid on a member and cleaning the predetermined member by applying vibration to the second liquid on the predetermined member.
- a cleaning method for a predetermined member of an exposure apparatus that exposes a substrate with exposure light through a first liquid, the observation being provided on the distal end side of the flexible member
- the cleaning device provided on the front end side of the flexible member is provided on the rear end side of the flexible member based on the observation of the predetermined member with the apparatus and the observation result.
- a cleaning method is provided which includes operating a manipulation device to clean a predetermined member.
- a immersion exposure apparatus tally method for exposing a substrate with exposure light, wherein the plate-like member is held by a holding portion of a substrate stage capable of holding the substrate. And forming a liquid immersion part between the first member and the plate-like member, and moving the liquid interface between the first member and the plate-like member to adhere to the first member. Is removed from the first member, and the plate-like member is unloaded from the substrate stage.
- a cleaning method for a predetermined part of an immersion exposure apparatus that exposes a substrate with exposure light, which is movable on the light exit side of the optical element through which the exposure light passes.
- a cleaning method including forming a liquid immersion portion with a liquid on a predetermined member and applying vibration to the liquid on the predetermined member by vibrating the predetermined member.
- the ninth aspect of the present invention can be attached to a holding part of a substrate stage that can hold a substrate irradiated with exposure light, and is used for cleaning the first member.
- the member has a surface on which a liquid immersion portion is formed between the first member and the first member, and the surface can hold the foreign matter removed from the first member by the cleaning operation using the liquid.
- a cleaning member is provided.
- the exposure apparatus can be cleaned satisfactorily, and deterioration of the performance of the exposure apparatus due to contamination can be suppressed.
- FIG. 1 is a schematic block diagram that shows an exposure apparatus according to a first embodiment.
- FIG. 7 is a diagram showing a state in which the contamination state of the substrate table is detected.
- FIG. 8] is a side view showing the first, second, and third nozzle members.
- FIG. 9A A schematic diagram for explaining an example of the cleaning method according to the first embodiment.
- FIG. 9B A schematic diagram for explaining an example of the cleaning method according to the first embodiment. It is a schematic diagram for explaining an example of a cleaning method according to the embodiment (
- FIG. 11 is a side sectional view showing the vicinity of a second nozzle member according to a second embodiment.
- Garden 13 is a diagram illustrating an example schematic diagram for explaining the (a state that cleaning the garden 14] measurement stage cleaning method according to the second embodiment.
- FIG. 15 is a schematic block diagram that shows an exposure apparatus according to a third embodiment.
- FIG. 16 is a schematic block diagram that shows an exposure apparatus according to a fourth embodiment.
- FIG. 17 is a schematic block diagram that shows an exposure apparatus according to a fifth embodiment.
- FIG. 18 is a schematic block diagram that shows an exposure apparatus according to a sixth embodiment.
- FIG. 19 is a diagram showing a state in which the contamination state of the substrate table is detected.
- FIG. 20A is a diagram showing a state in which the contamination state of the substrate table is detected.
- FIG. 20B is a diagram showing a state in which the contamination state of the substrate table is detected.
- FIG. 21A is a diagram showing a state in which the contamination state of the substrate table is detected.
- FIG. 21B It is a figure which shows the state which is detecting the contamination state of a substrate table.
- FIG. 22 is a diagram showing a state in which the contamination state of the substrate table is detected.
- FIG. 23 is a schematic block diagram that shows an exposure apparatus according to a seventh embodiment.
- FIG. 25 is a schematic diagram for explaining an example of the cleaning method according to the eighth embodiment.
- FIG. 26 is a schematic diagram for explaining an example of the cleaning method according to the eighth embodiment.
- FIG. 27 is a schematic diagram for explaining an example of the cleaning method according to the eighth embodiment.
- FIG. 28 is a flowchart showing an example of a microdevice manufacturing process.
- Cleaning member CP1 ... holding area, CP2_ liquid-repellent area, DP ... dummy substrate, EL ... exposure light, exposure apparatus, LC ... cleaning liquid, LQ ... exposure liquid, LSI ... first immersion space, LS 2 ... 2nd immersion space, ⁇ ... Substrate
- an XYZ orthogonal coordinate system is set, and the positional relationship of each member will be described with reference to this XYZ orthogonal coordinate system.
- the predetermined direction in the horizontal plane is the X-axis direction
- the direction orthogonal to the X-axis direction in the horizontal plane is the Y-axis direction
- the direction orthogonal to each of the X-axis direction and the Y-axis direction is the Z-axis direction.
- the rotation (tilt) directions around the X, Y, and Z axes are the ⁇ X, ⁇ , and ⁇ directions, respectively.
- FIG. 1 is a schematic block diagram that shows an exposure apparatus 1 according to the first embodiment.
- the exposure apparatus ⁇ performs measurement related to exposure without holding the mask ⁇ , the mask stage 1 that can move while holding the mask ⁇ , the substrate stage 2 that can move while holding the substrate ⁇ , and the like.
- a measuring stage 3 that can be moved independently of the substrate stage 2, a drive mechanism 4 that moves the mask stage 1, and a substrate stage Drive mechanism 5 for moving the stage 2 and the measurement stage 3, a measurement system 6 including a laser interferometer for measuring the position information of each stage, an illumination system IL for illuminating the mask M with exposure light EL, and exposure light
- a projection optical system PL that projects an image of the pattern of the mask M illuminated by EL onto the substrate P, and a control device 7 that controls the overall operation of the exposure apparatus EX are provided.
- the substrate P here is an exposure substrate for manufacturing a device, and a film such as a photosensitive material (photoresist) is formed on a base material such as a semiconductor wafer such as a silicon wafer. In addition to the photosensitive film, a film coated with various films such as a protective film (topcoat film) is also included.
- the substrate P is a disk-shaped member.
- the mask M includes a reticle on which a device pattern projected onto the substrate P is formed. In this embodiment, a transmissive mask is used as the mask, but a reflective mask can also be used.
- the transmission type mask is not limited to a binary mask in which a pattern is formed by a light shielding film, and includes, for example, a phase shift mask such as a halftone type or a spatial frequency modulation type.
- the exposure apparatus EX of the present embodiment is an immersion exposure apparatus to which an immersion method is applied in order to improve the resolution by substantially shortening the exposure wavelength and substantially increase the depth of focus.
- the first nozzle member 8 capable of forming the first immersion space LSI with the first liquid LQ so as to fill the optical path space of the exposure light EL with the exposure liquid LQ (hereinafter referred to as the first liquid LQ) I have.
- the exposure apparatus EX exposes the substrate P by irradiating the substrate P with the exposure light EL through the first liquid LQ.
- the exposure apparatus EX of the present embodiment can form the second immersion space LS2 with the tiling liquid LC (hereinafter referred to as the second liquid LC) at a position away from the first nozzle member 8.
- the exposure apparatus EX of the present embodiment includes a third nozzle member 12 having an air supply port 11 capable of supplying gas at a position away from the first nozzle member 8 and the second nozzle member 9. Yes.
- optical path space of the exposure light EL is a space including an optical path along which the exposure light EL travels.
- the immersion space is a space filled with liquid.
- the first nozzle member 8 can form a first immersion space LS 1 between the first nozzle member 8 and an object facing the first nozzle member 8.
- the first nozzle member 8 is the projection optical system PL.
- On the light exit side (image surface side) the surface of the object disposed between the surface of the object disposed at a position where the exposure light EL can be irradiated, that is, the position opposed to the light exit surface of the projection optical system PL.
- the first immersion space LSI can be formed between the two.
- the first nozzle member 8 holds the first liquid LQ between the object surface and the optical path space of the exposure light EL on the light emission side of the projection optical system PL, specifically, the projection optical system PL.
- the first immersion space LSI of the first liquid LQ is formed between the surface of the object and the surface of the object so that the optical path space of the exposure light EL between the object and the object is filled with the first liquid LQ.
- the second nozzle member 9 can form a second immersion space LS 2 between the second nozzle member 9 and an object that faces the second nozzle member 9.
- the second nozzle member 9 holds the second liquid LC with the surface of the object, thereby forming a second immersion space LS2 with the surface of the object with the second liquid LC.
- the exposure apparatus EX forms a second immersion space LS 2 between the second nozzle member 9 and the opposing object, and cleans the object with the second liquid LC.
- the exposure apparatus EX is arranged between the first nozzle member 8 and the object so that a partial area (local area) on the surface of the object is covered with the first liquid LQ.
- a first immersion space LS1 Further, the exposure apparatus EX is arranged between the second nozzle member 9 and the object so that a partial area (local area) of the surface of the object is covered with the second liquid LC of the second immersion space LS2.
- a second immersion space LS 2 is formed.
- the object that can face the first nozzle member 8 and the second nozzle member 9 includes an object that can move on the light emitting side (image plane side) of the projection optical system PL.
- the object that can face the first nozzle member 8 and the second nozzle member 9 includes at least one of the substrate stage 2 and the measurement stage 3 that are movable on the light emission side of the projection optical system PL.
- the object that can face the first nozzle member 8 and the second nozzle member 9 includes the substrate P held on the substrate stage 2.
- the substrate stage 2 and the measurement stage 3 include a first nozzle member 8, a second nozzle member 9, and a first nozzle member.
- the first nozzle member 8, the second nozzle member 9, and the third nozzle member 12 can be opposed to the substrate stage 2 and the measurement stage 3, respectively. That is, each of the substrate stage 2 and the measurement stage 3 is disposed at a position facing each of the first nozzle member 8, the second nozzle member 9, and the third nozzle member 12. Is possible.
- the exposure apparatus EX is configured such that when at least one of the substrate stage 2 and the measurement stage 3 faces the first nozzle member 8, at least one of the substrate stage 2 and the measurement stage 3 and the first nozzle member 8 In the meantime, the first immersion space LS 1 can be formed with the first liquid LQ.
- the second nozzle member 9 forms the second immersion space LS2 between the second nozzle member 9 and the surface of the movable object on the light emission side of the projection optical system PL. It can be formed.
- the exposure apparatus EX when at least one of the substrate stage 2 and the measurement stage 3 is opposed to the second nozzle member 9, the exposure apparatus EX is arranged between at least one of the substrate stage 2 and the measurement stage 3 and the second nozzle member 9.
- the second immersion space LS2 can be formed by the second liquid LC.
- the exposure apparatus EX has at least one of the first nozzle member 8 and the substrate stage 2 and the measurement stage 3 facing the first nozzle member 8 in a state where the first immersion space LSI is formed.
- the exposure apparatus EX has at least one of the second nozzle member 9 and the substrate stage 2 and the measurement stage 3 facing the second nozzle member 9 in the state where the second immersion space LS2 is formed.
- at least one of the second nozzle member 9 and the substrate stage 2 and the measurement stage 3 facing the second nozzle member 9 Are relatively movable.
- the illumination system IL illuminates a predetermined illumination area on the mask M with the exposure light EL having a uniform illuminance distribution.
- the exposure light EL emitted from the illumination system IL includes, for example, bright ultraviolet rays (g-line, h-line, i-line) emitted from a mercury lamp and far ultraviolet light (DU V light) such as KrF excimer laser light (wavelength 248 nm). ArF excimer laser light (wavelength 193nm) and F laser light (wavelength 157nm)
- VUV light Sky ultraviolet light
- ArF excimer laser light is used as the exposure light EL.
- the mask stage 1 is movable in the X-axis, Y-axis, and ⁇ -Z directions by a drive mechanism 4 including an actuator such as a linear motor while holding the mask M.
- the position information of mask stage 1 (and hence mask M) is measured by laser interferometer 6A of measurement system 6.
- the laser interferometer 6A measures position information of the mask stage 1 in the X axis, Y axis, and ⁇ Z directions using a measurement mirror 1F provided on the mask stage 1.
- the control device 7 drives the drive mechanism 4 based on the measurement result of the measurement system 6 and controls the position of the mask M held by the mask stage 1!
- Projection optical system PL projects an image of the pattern of mask M onto substrate P at a predetermined projection magnification.
- Projection optical system PL has a plurality of optical elements, and these optical elements are held by lens barrel PK.
- the projection optical system PL of the present embodiment is a reduction system whose projection magnification is, for example, 1/4, 1/5, 1/8 or the like.
- the projection optical system PL may be any of a reduction system, a unity magnification system, and an enlargement system.
- the optical axis AX of the projection optical system PL is parallel to the Z-axis direction.
- the projection optical system PL may be any of a refractive system that does not include a reflective optical element, a reflective system that does not include a refractive optical element, and a catadioptric system that includes a reflective optical element and a refractive optical element. Further, the projection optical system PL may form either an inverted image or an erect image.
- the substrate stage 2 includes a stage body 21, and a substrate table 22 that is supported by the stage body 21 and includes a holding unit 23 that detachably holds the substrate P.
- the stage main body 21 is supported in a non-contact manner on the upper surface (guide surface) of the base member BP by an air bearing.
- the substrate table 22 has a recess 22R, and the holding portion 23 is disposed in the recess 22R.
- the upper surface 24 around the recess 22R of the substrate table 22 is substantially flat and is almost the same height (level) as the surface of the substrate P held by the holding portion 23.
- the substrate stage 2 is held in the X-axis, Y-axis, Z-axis, ⁇ X, ⁇ Y, and ⁇ directions on the base member BP while the substrate P is held by the holding unit 23 by the drive mechanism 5. It can move in the direction of 6 degrees of freedom.
- the measurement stage 3 includes a stage body 31 and a measurement table 32 that is supported by the stage body 31 and on which at least a part of the measuring instrument is mounted.
- the measuring instrument includes a reference member on which a reference mark is formed and / or various photoelectric sensors.
- the stage main body 31 is supported in a non-contact manner on the upper surface (guide surface) of the base member BP by air bearing.
- the upper surface 34 of the measuring table 32 is almost flat.
- the measurement stage 3 is mounted in the direction of 6 degrees of freedom on the base member BP in the X-axis, Y-axis, Z-axis, ⁇ ⁇ , 6 ⁇ , and 62 directions on the base member BP with the measuring device mounted by the drive mechanism 5. It is movable.
- the drive mechanism 5 includes an actuator such as a linear motor, and can move the substrate stage 2 and the measurement stage 3 respectively.
- the drive mechanism 5 includes a coarse movement system 13 that moves the stage main bodies 21 and 31 on the base member BP, and a fine movement system 14 that moves the tapes 22 and 32 on the stage main bodies 21 and 31. Yes.
- the coarse motion system 13 includes an actuator such as a linear motor, and can move the stage bodies 21 and 31 on the base member BP in the X-axis, Y-axis, and ⁇ Z directions.
- Coarse motion system 1 As the stage bodies 21, 31 are moved in the X-axis, Y-axis, and ⁇ -Z directions by the step 3, the tables 22, 32 mounted on the stage bodies 21, 31 are also It moves in the X-axis, Y-axis, and ⁇ -Z direction together with the main body 21, 31.
- FIG. 2 is a view of the substrate stage 2 and the measurement stage 3 as viewed from above.
- the coarse motion system 13 for moving the substrate stage 2 and the measurement stage 3 includes a plurality of reduction motors 51, 52, 53, 54, 55 and 56.
- Coarse motion system 13 (also provided with a pair of Y-axis guide members 15 and 16 extending in the Y-wheel direction.
- Each of the Y-axis guide members 15 and 16 includes a magnet unit having a plurality of permanent magnets.
- One Y-axis guide member 15 supports the two slide members 41 and 42 so as to be movable in the Y-axis direction, and the other Y-axis guide member 16 supports the two slide members 43 and 44 in the Y direction.
- Each of the slide members 41, 42, 43, 44 includes a coil unit having an armature coil, that is, in the present embodiment, the slide member 41 having a coil unit, Moving coil type Y-wheel linear motors 51, 52, 53, 54 are formed by the Y-axis guide members 15, 16 having 42, 43, 44 and magnet units.
- the coarse motion system 13 includes a pair of X axis guide members 17 and 18 extending in the X axis direction.
- Each of the X axis guide members 17 and 18 includes a coil unit having an armature coil.
- One X-axis guide member 17 supports a slide member 45 connected to the stage body 21 of the substrate stage 2 so as to be movable in the X-axis direction, and the other X-axis guide member 18 is a stage body of the measurement stage 3.
- a slide member 46 connected to 31 is supported so as to be movable in the X-axis direction.
- Each of the slide members 45 and 46 includes a magnet unit having a plurality of permanent magnets.
- the moving magnet type X-axis that drives the substrate stage 2 (stage body 21) in the X-axis direction by the slide member 45 having the magnet unit and the X-axis guide member 17 having the coil unit.
- a linear motor 55 is formed.
- a moving magnet type X-axis linear motor 56 for driving the measurement stage 3 (stage body 31) in the X-axis direction is formed by the slide member 46 having a magnet unit and the X-axis guide member 18 having a coil unit.
- the slide members 41 and 43 are fixed to one end and the other end of the X-axis guide member 17, respectively.
- the slide members 42 and 44 are fixed to one end and the other end of the X-axis guide member 18, respectively. ing. Therefore, the X-axis guide member 17 can be moved in the vertical direction by the Y-axis linear motors 51 and 53, and the X-axis guide member 18 can be moved in the vertical direction by the vertical axis motors 52 and 54.
- the position of the substrate stage 2 in the ⁇ ⁇ direction can be controlled by making the thrust generated by each of the pair of saddle linear motors 51 and 53 slightly different, and the pair of saddle linear motors 52 and 54
- the position of the measurement stage 3 in the ⁇ ) S direction can be controlled by slightly varying the thrust generated by each of the above.
- fine movement system 14 includes an actuator 14V such as a voice coil motor interposed between each stage main body 21, 31 and each table 22, 32, and each actuator. It includes a measuring device (not shown) that measures the drive amount of 14V, and each table 22, 32 on each stage body 21, 31 can be moved in at least the Z-axis, ⁇ X, and ⁇ Y directions It is. Further, the fine movement system 14 can move (finely move) the respective table nozzles 22 and 32 on the respective stage main bodies 21 and 31 in the X-axis, Y-axis, and ⁇ Z directions.
- actuator 14V such as a voice coil motor interposed between each stage main body 21, 31 and each table 22, 32, and each actuator. It includes a measuring device (not shown) that measures the drive amount of 14V, and each table 22, 32 on each stage body 21, 31 can be moved in at least the Z-axis, ⁇ X, and ⁇ Y directions It is. Further, the fine movement system 14 can move (finely move) the respective table nozzles 22 and 32 on the respective stage main
- the drive mechanism 5 including the coarse motion system 13 and the fine motion system 14 is configured so that the substrate table 22 and the measurement table 32 are respectively connected to the X axis, the Y axis, the Z axis, ⁇ X, ⁇ Y, and It can move in the direction of 6 degrees of freedom in ⁇ 7 ⁇ 5 direction.
- the position information of the substrate table 22 (substrate!) And the position information of the measurement table 32 of the measurement stage 3 are measured by the laser interferometer 6 of the measurement system 6.
- the laser interferometer 6 ⁇ ⁇ measures position information regarding the X-axis, Y-axis, and ⁇ Z directions of the tables 22 and 32 using the measurement mirrors 22F and 32F of the tables 22 and 32, respectively.
- the surface position information (position information about the Z axis, ⁇ X, and ⁇ Y directions) of the surface of the substrate P held by the holding portion 23 of the substrate table 22 of the substrate stage 2 and the measurement of the measurement stage 3
- the surface position information of a predetermined area on the upper surface of the table 32 is detected by a focus leveling detection system 60 (see FIG. 3) of the measurement system 6.
- the control device 7 drives the drive mechanism 5 based on the measurement result of the laser interferometer 6B of the measurement system 6 and the detection result of the focus' leveling detection system 60, and the substrate table 22 and the holding unit 2 of the substrate table 22
- the position of the substrate P held by 3 and the position of the measurement table 32 is controlled.
- a dew provided with a substrate stage for holding a substrate and a measurement stage equipped with a measuring instrument.
- the optical device is disclosed in, for example, JP-A-11-135400, JP-A-2000-164504 (corresponding US Pat. No. 6,897,963).
- FIG. 3 is a view showing the vicinity of the first nozzle member 8.
- the second nozzle member 9 and the third nozzle member 12 are not shown.
- the substrate P is disposed at a position facing the first nozzle member 8, and the first nozzle L 8 holds the first liquid LQ between the surface of the substrate P and the first liquid LQ.
- the case where the immersion space LS I is formed will be described as an example.
- the first nozzle member 8 can form the first immersion space LSI with the first liquid LQ.
- the first nozzle member 8 is closest to the image plane of the projection optical system PL and is close to the end optical element FL among the plurality of optical elements of the projection optical system PL, and faces the surface of the substrate P. Arranged to be! /
- the first nozzle member 8 has a lower surface facing the surface of the substrate P, and can hold the first liquid LQ between the lower surface and the surface of the substrate P.
- the first nozzle member 8 holds the first liquid LQ between the surface of the substrate P, and thereby the optical path space of the exposure light EL on the image plane side (light emission side) of the projection optical system PL, specifically, Form a first immersion space LSI between the surface of the substrate P and the surface of the substrate P so that the optical path space of the exposure light EL between the projection optical system PL and the substrate P is filled with the first liquid LQ.
- the exposure apparatus EX uses the first nozzle member 8 to project the optical path space of the exposure light EL on the light emission side of the projection optical system PL while projecting at least the pattern image of the mask M onto the substrate P.
- the first immersion space LS I is formed so as to be filled with the first liquid LQ, and the exposure light EL that has passed through the mask M is held on the substrate stage 2 via the first liquid LQ and the projection optical system PL.
- the substrate P is exposed by irradiating the substrate P. As a result, an image of the pattern of the mask M is projected onto the substrate P.
- the exposure apparatus EX uses the first nozzle member 8 so that a partial region (local region) on the surface of the object is covered with the first liquid LQ.
- the first immersion space LS I is formed between the object and the object.
- the exposure apparatus EX includes the first nozzle member 8 and the substrate P so that a partial region on the substrate P including the projection area AR of the projection optical system PL is covered with the first liquid LQ.
- a local immersion method is used to form the first immersion space LSI between them.
- the first nozzle member 8 has a supply port 81 capable of supplying the first liquid LQ and a recovery port 82 capable of recovering the first liquid LQ.
- a porous member (mesh) 83 is disposed in the recovery port 82! /.
- the lower surface of the first nozzle member 8 that can face the surface of the substrate P includes a lower surface of the porous member 83 and a flat surface 8R arranged so as to surround the opening 8K for allowing the exposure light EL to pass therethrough.
- the supply port 81 is connected to a first liquid supply device 86 capable of delivering the first liquid LQ via a supply flow path 84 formed inside the first nozzle member 8 and a supply pipe 85. Yes.
- the recovery port 82 is connected to a first liquid recovery device 89 capable of recovering at least the first liquid LQ via a recovery flow path 87 formed inside the first nozzle member 8 and a recovery pipe 88. .
- the first liquid supply device 86 can deliver the clean and temperature-adjusted first liquid LQ.
- the first liquid recovery device 89 includes a vacuum system or the like, and can recover the first liquid LQ.
- the operations of the first liquid supply device 86 and the first liquid recovery device 89 are controlled by the control device 7.
- the first liquid LQ delivered from the first liquid supply device 86 flows through the supply pipe 85 and the supply flow path 84 of the first nozzle member 8, and is then supplied from the supply port 81 to the optical path space of the exposure light EL.
- the first liquid LQ recovered from the recovery port 82 by driving the first liquid recovery device 89 flows through the recovery flow path 87 of the first nozzle member 8 and then passes through the recovery pipe 88 to the first liquid LQ.
- the control device 7 performs the liquid supply operation from the supply port 81 and the liquid recovery operation by the recovery port 82 in parallel, thereby reducing the optical path space of the exposure light EL between the last optical element FL and the substrate P.
- 1st liquid LQ 1st immersion space LSI is formed so as to be filled with 1 liquid LQ.
- water pure water is used as the first liquid LQ.
- the exposure apparatus EX includes a detection device 80 that can detect the quality (water quality) of the first liquid LQ recovered from the recovery port 82.
- the detection device 80 includes, for example, a TOC meter for measuring total organic carbon in the first liquid LQ, a particle counter for measuring foreign matter including fine particles and bubbles, and the like. Liquid LQ contamination status (quality) can be detected.
- the exposure apparatus EX of the present embodiment is an alignment method for detecting an alignment mark on the substrate P, a reference mark on the measurement stage 3, and the like. 40 system.
- the alignment system 40 detects a broadband detection light flux that does not expose the photosensitive material on the substrate P as disclosed in Japanese Patent Laid-Open No. 465603 (corresponding to US Pat. No. 5,493,403).
- the target mark image and the index formed on the light receiving surface by the reflected light from the target mark.
- This is a FIA (Fie Id Image Alignment) type alignment system that takes images using an image sensor (CCD, etc.) and measures the position of the marks by processing the image signals.
- FIA Fie Id Image Alignment
- the alignment system 40 has an image sensor and is not limited to the mark image.
- An optical image (image) of an object arranged in 40 detection regions can be acquired.
- the exposure apparatus EX is provided with a focus / leveling detection system 60 capable of detecting surface position information and the like of the surface of the substrate P.
- the focus / leveling detection system 60 includes a projection device 61 capable of projecting detection light on the surface of the substrate P from an oblique direction, and a substrate for detection light emitted from the projection device 61 that is disposed at a predetermined position with respect to the detection light. And a light receiving device 62 capable of receiving the reflected light on the surface of P.
- the focus / leveling detection system 60 detects surface position information on the surface of the substrate P in a state where the substrate P faces the projection optical system PL and / or the first nozzle member 8.
- the present invention is not limited to this configuration, and the surface position information of the surface of the substrate P is detected in a state where the substrate P is not opposed to the projection optical system PL and the first nozzle member 8. Good.
- FIG. 4 is a side sectional view showing the vicinity of the second nozzle member 9, and FIG. 5 is a view of the second nozzle member 9 as viewed from below.
- the first nozzle member 8 and the third nozzle member 12 are not shown.
- the substrate table 22 is disposed at a position facing the second nozzle member 9, and the second nozzle member 9 holds the second liquid LC between the upper surface 24 of the substrate table 22.
- the case where the second immersion space LS2 is formed will be described as an example.
- the second nozzle member 9 can form the second immersion space LS2 with the second liquid LC.
- the second nozzle member 9 is disposed at a position away from the first nozzle member 8.
- the second nozzle member 9 has a lower surface, and the upper surface 24 of the substrate table 22 can be opposed to the lower surface of the second nozzle member 9. Further, the second liquid LC is formed between the lower surface of the second nozzle member 9 and the upper surface 24 of the substrate table 22. Can be held.
- the second nozzle member 9 holds the second liquid LC between it and the upper surface 24 of the substrate table 22, so that the second nozzle member 9 is positioned between the upper surface 24 of the substrate table 22 at a position away from the first nozzle member 8.
- Two immersion space LS2 can be formed.
- the exposure apparatus EX uses the second nozzle member 9 so that a partial region (local region) on the surface of the object is covered with the second liquid LC.
- a second immersion space LS 2 is formed between the object and the object.
- the second nozzle member 9 has a supply port 91 capable of supplying the second liquid LC and a recovery port 92 capable of recovering the second liquid LC.
- the supply port 91 is formed substantially at the center of the lower surface of the second nozzle member 9 facing the upper surface 24 of the substrate table 22.
- the collection port 92 is formed on the lower surface of the second nozzle member 9 so as to surround the supply port 91.
- the supply port 91 is connected to a second liquid supply device 96 capable of delivering the second liquid LC via a supply flow path 94 formed in the second nozzle member 9 and a supply pipe 95. Yes.
- the recovery port 92 is connected to the second liquid recovery device 99 including a vacuum system capable of recovering the second liquid LC via a recovery flow path 97 formed inside the second nozzle member 9 and a recovery pipe 98. It is connected.
- the operations of the second liquid supply device 96 and the second liquid recovery device 99 are controlled by the control device 7.
- the second liquid LC delivered from the second liquid supply device 96 flows through the supply pipe 95 and the supply flow path 94 of the second nozzle member 9, and then the lower surface of the second nozzle member 9 and the substrate from the supply port 91. Supplied between the upper surface 24 of the table 22.
- the second liquid LC recovered from the recovery port 92 by driving the second liquid recovery device 99 flows through the recovery flow path 97 of the second nozzle member 9 and then passes through the recovery pipe 98 to the second liquid LC. It is recovered by the recovery device 99.
- the control device 7 performs the liquid supply operation from the supply port 91 and the liquid recovery operation by the recovery port 92 in parallel so that a part of the upper surface 24 of the substrate table 22 is covered with the second liquid LC. Then, the second liquid immersion space LS 2 is formed by the second liquid LC.
- the second liquid LC is different from the first liquid LQ.
- hydrogen water hydrogen-dissolved water in which hydrogen gas is dissolved in water is used as the second liquid LC.
- ozone water in which ozone gas was dissolved in water ozone-dissolved water
- nitrogen water in which nitrogen gas was dissolved in water nitrogen-dissolved water
- argon gas dissolved in water
- a Dissolved gas control water in which a predetermined gas is dissolved in water such as Lugon water (argon-dissolved water)
- carbon dioxide water in which carbon dioxide gas is dissolved in water carbon dioxide-dissolved water
- hydrogen peroxide water with hydrogen peroxide added to water chlorine-added water with hydrochloric acid (hypochlorous acid) added to water, ammonia water with ammonia added to water, and choline with water.
- Chemical solution-added water in which a predetermined chemical solution is added to water such as choline water added to the above and sulfuric acid-added water in which sulfuric acid is added to water, may be used.
- the second liquid LC alcohols such as ethanol and methanol, ethers, gamma-butyrolatatones, thinners, surfactants, and fluorine-based solvents such as HFE may be used.
- the ultrasonic generator 10 applies ultrasonic waves (vibration) to the second liquid LC in the second immersion space LS2.
- the ultrasonic generator 10 has an ultrasonic vibrator connected to the second nozzle member 9, and the second nozzle member 9 is vibrated to vibrate the second immersion space LS2. Apply ultrasonic waves to liquid LC.
- the ultrasonic transducer of the ultrasonic generator 10 is disposed on the side surface of the second nozzle member 9.
- FIG. 6 is a side sectional view showing the vicinity of the third nozzle member.
- the first nozzle member 8 and the second nozzle member 9 are not shown.
- the case where the substrate table 22 is disposed at a position facing the third nozzle member 12 will be described as an example.
- the third nozzle member 12 has an air supply port 11 that can supply gas toward the substrate table 22 at a position away from the first nozzle member 8 and the second nozzle member 9.
- the air supply port 11 of the third nozzle member 12 removes at least one of the first liquid LQ and the second liquid LC on the substrate table 22 by supplying gas to the substrate table 22 in an urgent direction.
- the air supply port 11 of the third nozzle member 12 supplies gas to the substrate table 22 in an urgent direction to vaporize at least one of the first liquid LQ and the second liquid LC on the substrate table 22, thereby Remove at least one of liquid LQ and second liquid LC. Note that at least one of the first liquid LQ and the second liquid LC on the substrate table 22 may be blown off by supplying gas from the air supply port 11.
- the air supply port 11 is formed on the lower surface of the third nozzle member 12 facing the upper surface 24 of the substrate table 22, and the upper surface 2 of the substrate table 22 from a position above the substrate table 22. Supply gas to 4.
- the air supply port 11 is connected to a gas supply device 30 capable of delivering gas via an air supply channel 19 formed inside the third nozzle member 12 and an air supply pipe 20.
- the gas supply device 30 can deliver clean and temperature-adjusted gas.
- the operation of the gas supply device 30 is controlled by the control device 7.
- the gas delivered from the gas supply device 30 flows through the air supply pipe 20 and the air supply passage 19 of the third nozzle member 12, and then is supplied from the air supply port 11 toward the upper surface 24 of the substrate table 22. .
- dry air is used as the gas for removing the liquid.
- dry nitrogen gas or the like may be used as the gas for removing the liquid.
- the control device 7 uses the drive mechanism 5 to place the measurement stage 3 at a position facing the first nozzle member 8, and between the first nozzle member 8 and the measurement stage 3, 1Liquid LQ is used to form the first immersion space LSI. Then, the control device 7 performs measurement by various measuring instruments arranged on the measurement stage 3 through the first immersion space LSI formed by the first liquid LQ. Then, based on the measurement result of the measuring instrument, the control device 7 adjusts the exposure conditions when exposing the substrate P, such as the imaging characteristics of the projection optical system PL, and starts the exposure operation of the substrate P.
- the control device 7 uses the drive mechanism 5 to place the substrate stage 2 holding the substrate P at a position facing the first nozzle member 8, and the first nozzle member 8 and the substrate stage 2 Form the first immersion space LSI with (Substrate P).
- the exposure apparatus EX of the present embodiment is, for example, pamphlet of International Publication No. 2005/074014.
- the position facing the light exit surface of the projection optical system PL (terminal optical element) (the position directly below the projection optical system PL) is In a predetermined area including the upper surface 24 of the substrate stage 2 (substrate table 22) and the upper surface 34 of the measurement stage 3 (measurement table 32), with respect to the first nozzle member 8,
- the first immersion space LSI can be moved between the upper surface 24 of the substrate stage 2 and the upper surface 34 of the measurement stage 3.
- Exposure light EL passes through each of substrate stage 2 and measurement stage 3.
- the first immersion space LSI is formed between the first nozzle member 8 and the measurement stage 3, and the predetermined stage using the measurement stage 3 is movable. After performing the measurement operation, the first nozzle member 8 is placed on the substrate stage 2 while maintaining the state in which the first immersion space LS I is formed (that is, the terminal optical element FL is in contact with the first liquid LQ). The force S is used to face each other.
- the control device 7 exposes the substrate P by irradiating the substrate P with the exposure light EL through the first immersion space LSI formed of the first liquid LQ. After the exposure of the substrate P is completed, the control device 7 maintains the state in which the first immersion space LSI is formed, and within the predetermined area including the position facing the light emission surface of the projection optical system PL. With the upper surface 24 of the stage 2 and the upper surface 34 of the measurement stage 3 approaching or contacting each other, the substrate stage 2 and the measurement stage 3 are moved together in the XY direction with respect to the first nozzle member 8, and the first The measurement stage 3 is opposed to the nozzle member 8. Thereby, the first immersion space LSI is formed between the first nozzle member 8 and the measurement stage 3.
- the control device 7 moves the substrate stage 2 holding the exposed substrate P to a predetermined substrate replacement position, and unloads the unexposed substrate P from the substrate stage 2. At the same time, the substrate P to be exposed is loaded (loaded) onto the substrate stage 2. Further, during the substrate replacement at the substrate replacement position, the control device 7 performs a measurement operation using the measurement stage 3 via the first liquid LQ in the first immersion space LSI as necessary. After the loading of the substrate P to the substrate stage 2 is completed, the control device 7, as described above, controls the upper surface 24 of the substrate stage 2 and the measurement stage within a predetermined area including the position facing the light emission surface of the projection optical system PL.
- the substrate stage 2 and the measurement stage 3 are moved together in the XY direction with respect to the first nozzle member 8, and the substrate stage 2 is moved to the first nozzle member 8. Face each other.
- the first immersion space LSI is formed between the first nozzle member 8 and the substrate stage 2.
- the controller 7 exposes the substrate P through the first liquid LQ in the first immersion space LSI.
- control device 7 repeats the above operation to sequentially expose the plurality of substrates P.
- the control device 7 performs the second operation during the measurement operation by the measurement stage 3 via the first immersion space LSI and during the exposure operation for the substrate P on the substrate stage 2 via the first immersion space LSI.
- liquid The immersion space LS2 is not formed.
- the control device 7 supplies power during the measurement operation by the measurement stage 3 via the first immersion space LSI and during the exposure operation for the substrate P on the substrate stage 2 via the first immersion space LSI. Do not perform the gas supply operation using the vent 11.
- the first liquid LQ comes into contact with each of the surface of the substrate P, the lower surface of the terminal optical element FL, and the lower surface of the first nozzle member 8. In addition, the first liquid LQ comes into contact with each of the substrate stage 2 (substrate table 22) and the measurement stage 3 (measurement table 32).
- a part of the substrate P (for example, a portion of the photosensitive material) elutes into the first liquid LQ in contact with the substrate P, and the lower surface of the last optical element FL, the lower surface of the first nozzle member 8, the substrate At least one member on stage 2 (substrate table 22) and measurement stage 3 (measurement table 32) may adhere to the material and contaminate the member.
- the material is not limited to the substance eluted from the substrate P.
- each member may be contaminated by a substance (foreign matter) floating in the space in the exposure apparatus EX.
- the substrate stage 2 is left in a contaminated state, the substrate P cannot be satisfactorily held by the substrate table 22, and the substrate P may not be satisfactorily exposed.
- the transfer device for loading the substrate P onto the substrate stage 2, or the substrate stage. Contamination may increase, for example, the transfer device that unloads the substrate P from 2 will be contaminated.
- the exposure apparatus EX includes the second liquid LC between the second nozzle member 9 and at least one of the substrate stage 2 and the measurement stage 3 facing the second nozzle member 9 in the second liquid LC.
- An immersion space LS2 is formed, and at least one of the substrate stage 2 and the measurement stage 3 is cleaned with the second liquid thread.
- the control device 7 obtains the position information of the substrate table 22 by the measurement system 6 every time a predetermined number of substrates P are exposed, every lot, or every predetermined time interval. While measuring, the alignment system 40 detects the contamination state of the substrate table 22. In the present embodiment, the cleaning operation for the substrate table 22 is controlled based on the detection result of the contamination state of the substrate table 22 by the alignment system 40. The control device 7 controls the operation of forming the second immersion space LS2 by the second nozzle member 9 based on the detection result of the contamination state of the substrate table 22 by the alignment system 40.
- the alignment system 40 includes an image sensor that can acquire an optical image (image) of an object. Therefore, the alignment system 40 can acquire an image of the upper surface 24 of the substrate table 22, and can detect the contamination state of the upper surface 24 of the substrate table 22 based on the acquired image information.
- the detection result of the alignment system 40 is output to the control device 7, and the control device 7 determines whether the contamination state of the upper surface 24 of the substrate table 22 is within an allowable range based on the detection result of the alignment system 40, or It is determined whether foreign matter is present on the upper surface 24 of the substrate tape liner 22.
- control device 7 is contaminated with the image information (reference) of the upper surface 24 of the substrate table 22 in a contaminated state! /, Na! /, Normal state (ideal state). Image) is stored in advance, and the control device 7 compares the stored reference image information with the actual image information of the upper surface 24 of the substrate table 22 acquired by the alignment system 40, and the comparison result Based on the above, it is determined whether the contamination state of the upper surface 24 of the substrate table 22 is within an allowable range.
- control device 7 If it is determined that the contamination state of the upper surface 24 of the substrate table 22 is within the allowable range, the control device 7 does not perform the cleaning operation and continues the normal exposure operation (exposure sequence). To do. On the other hand, if it is determined that the contamination state of the upper surface 24 of the substrate table 22 is not within the allowable range, the control device 7 executes a cleaning operation.
- the control device 7 stops the liquid supply operation by the supply port 81 of the first nozzle member 8, and uses the recovery port 82 of the first nozzle member 8 for the first liquid. Collect the 1st liquid LQ of the immersion space LSI and eliminate the 1st immersion space LSI. Thereafter, as shown in FIG. 8, the control device 7 supplies the second liquid LC from the supply port 91 of the second nozzle member 9 with the substrate table 22 facing the second nozzle member 9, The operation of forming the second immersion space LS2 between the second nozzle member 9 and the substrate table 22 is started.
- the holding unit 23 of the substrate table 22 has a high degree of cleanliness, which is different from the exposure substrate P, and is difficult to release foreign matter (Train-like).
- Dummy substrate DP is held.
- the dummy substrate DP has substantially the same outer shape as the exposure substrate P, and can be held by the holding unit 23.
- the holding unit 23 has a so-called pin chuck mechanism, and holds the substrate P and the dummy substrate DP in a detachable manner.
- the cleaning operation using the second liquid LC may be performed in a state where the holding unit 23 is exposed without holding the dummy substrate DP by the holding unit 23. By doing so, the second liquid LC comes into contact with the holding portion 23 as well as the upper surface 24 of the substrate table 22, and the holding portion 23 can be cleaned well.
- the second nozzle member 9 performs the liquid supply operation from the supply port 91 and the liquid recovery operation by the collection rod 92 in parallel.
- a second immersion space LS2 formed by the second liquid LC is formed between the second nozzle member 9 and the substrate table 22 so as to come into contact with the substrate table 22.
- the substrate table 22 can be disposed at a position facing each of the first nozzle member 8, the second nozzle member 9, and the third nozzle member 12.
- the substrate table 22 according to the size of the substrate table 22 so that the substrate table 22 and each of the second nozzle member 9 and the third nozzle member 12 can simultaneously face each other, The positional relationship between the second nozzle member 9 and the third nozzle member 12 is determined. As a result, as shown in FIG.
- the second immersion space LS2 can be formed in a part of the area, and another area on the upper surface 24 of the substrate table 22 and the third nozzle member 12 are opposed to each other, and the air supply port 11 is connected to the other area. Gas can be supplied.
- the control device 7 uses the ultrasonic generator 10 to apply ultrasonic waves to the second liquid LC (hydrogen water in the present embodiment) in the second immersion space LS2.
- the control device 7 forms the second immersion space LS2 with the second liquid LC, contacts the substrate liquid 22 with the second liquid LC of the second immersion space LS2, and so on.
- the substrate table 22 is cleaned by applying ultrasonic waves to the second liquid LC in the second immersion space LS2.
- the control device 7 moves the substrate table 22 in the XY direction with respect to the second nozzle member 9 with the second immersion space LS2 formed. Thereby, a wide area of the substrate table 22 can be cleaned. Even when the substrate table 22 is moved with respect to the second nozzle member 9 with the second immersion space LS2 formed, the supply operation from the supply port 91 and the recovery operation by the recovery port 92 are performed in parallel. The ultrasonic waves are applied to the second liquid LC in the second immersion space LS2.
- FIGS. 9A and 9B are schematic views showing an example of the cleaning operation of the substrate table 22.
- the control device 7 forms the second nozzle member 9 in the state where the second immersion space LS2 is formed under the second nozzle member 9 as shown by an arrow yl in FIG. 9A, for example.
- the substrate table 22 is moved with respect to the substrate. That is, in the state where the second immersion space LS2 is formed, the control device 7 reciprocates in the Y-axis direction while the second immersion space LS2 moves relative to the substrate table 22 in the X-axis direction. As shown, the substrate table 22 is moved. Thereby, a wide area of the substrate table 22 can be cleaned.
- the gas supply operation from the air supply port 11 of the third nozzle member 12 is stopped.
- the control device 7 stops the liquid supply operation from the supply port 91 of the second nozzle member 9, and the second nozzle Collect the second liquid LC in the second immersion space LS2 using the recovery port 92 of the member 9 and eliminate the second immersion space LS2. As a result, the cleaning operation of the second liquid immersion space LS2 by the second liquid LC is completed. Thereafter, as shown in FIG. 9B, the control device 7 makes the substrate table 22 and the third nozzle member 12 face each other, and the substrate table 22 through the air supply port 11 formed in the third nozzle member 12. The operation to supply gas toward is started. As shown in FIG.
- the control device 7 performs the gas supply operation from the air supply port 11 of the third nozzle member 12, and the third nozzle, for example, as shown by the arrow y2 in FIG. 9B.
- the substrate table 22 is moved relative to the member 12.
- the control device 7 supplies the gas from the air supply port 11 to the upper surface 24 of the substrate table 22, while the air supply port 11 moves relative to the substrate table 22 in the X-axis direction.
- the substrate table 22 is moved so as to reciprocate in the axial direction.
- the second liquid LC force that could not be recovered at the recovery port 92 of the second nozzle member 9 was placed on the substrate table 22. May remain.
- the gas is supplied from the air supply port 11 toward the upper surface 24 of the substrate table 22, thereby The second liquid LC can be removed.
- FIG. 10 is a schematic diagram showing an example of the cleaning operation of the substrate table 22.
- the control device 7 has a second immersion space LS2 formed under the second nozzle member 9, and the second nozzle member 9 has a second immersion space LS2 as shown by an arrow y3 in FIG.
- the control device 7 moves the substrate table 22 so that the second immersion space LS2 moves in one direction with respect to the Y-axis direction with respect to the substrate table 22. Similarly, the control device 7 repeats the movement in one direction in the Y-axis direction and the step movement in the X-axis direction.
- the formation operation of the second immersion space LS2 and at least a part of the gas supply operation from the air supply port 11 are performed in parallel. Further, in the example shown in FIG. 10, the gas from the air supply port 11 is supplied to the region of the upper surface 24 of the substrate table 22 after the second liquid LC in the second immersion space LS2 comes into contact.
- the substrate table There are 22 movement conditions (movement paths). This also makes it possible to clean the wide area of the substrate table 22 well and to prevent the second liquid LC from remaining on the substrate table 22.
- the control device 7 measures the positional information of the substrate table 22 with the measurement system 6 and detects the contamination state of the substrate table 22 with the alignment system 40. In the coordinate system defined by the interferometer 6mm, it is possible to identify the contaminated area. Therefore, the control device 7 can intensively clean the contaminated area on the substrate table 22 by using the second liquid LC in the second immersion space LS2.
- the substrate table 22 is tallyed separately from the first nozzle member 8 that forms the first immersion space LS I for filling the optical path space of the exposure light EL with the first liquid LQ. Since the second nozzle member 9 for forming the second immersion space LS2 is provided by the second liquid LC for the purpose, the substrate table 22 can be cleaned well. Therefore, it is possible to suppress the deterioration of the performance of the exposure apparatus EX caused by the contamination of the substrate table 22.
- the first nozzle member 8 that forms the first immersion space LS 1 with the first liquid LQ
- a second liquid LC suitable for cleaning, separate from the first liquid LQ can be used.
- the first nozzle member 8 is formed of an optimal material according to the physical properties of the first liquid LQ, or is subjected to an optimal surface treatment according to the physical properties of the first liquid LQ.
- a second liquid LC different from the first liquid LQ is allowed to flow into the flow paths 84 and 87 inside the first nozzle member 8, or the first nozzle member 8 If an immersion space is formed between the substrate table 22 and the second liquid staple, there is a possibility that a problem such as a change in the surface of the first nozzle member 8 may occur.
- a second liquid LC different from the first liquid LQ is allowed to flow through the flow paths 84 and 87 inside the first nozzle member 8, or between the first nozzle member 8 and the substrate table 22.
- the process to sufficiently remove the second liquid LC adhering to the first nozzle member 8 when the exposure operation is started after the cleaning operation is completed may take a long time. In this case, the operating rate of the exposure apparatus EX is reduced.
- the second nozzle member 9 dedicated for cleaning is provided, the occurrence of the above-described problems can be suppressed. Further, the second nozzle member 9 expands the range of selection of the type of second liquid LC that can be used.
- the ultrasonic generator 10 that applies ultrasonic waves to the second liquid LC in the second immersion space LS2 is provided, the cleaning effect can be enhanced.
- the substrate table 22 can be satisfactorily cleaned by the synergistic effect of the second liquid LC (hydrogen water) suitable for cleaning and ultrasonic waves.
- the air supply port 11 for supplying gas toward the substrate table 22 is provided, the second liquid LC on the substrate table 22 can be removed by the supplied gas, It is possible to suppress the remaining second liquid LC after the cleaning operation.
- FIG. 11 is a side sectional view showing the vicinity of the second nozzle member 9A according to the second embodiment
- FIG. 12 is a view of the second nozzle member 9A as viewed from below.
- the air supply port 11 for supplying gas toward the substrate table 22 is a second nozzle member 9A for forming the second immersion space LS2. Is formed. That is, in the first embodiment described above, the air supply port 11 is a force formed in the third nozzle member 12 different from the second nozzle member 9. In the second embodiment, the third nozzle member is omitted.
- the air supply port 11 is formed in the second nose member 9A.
- the supply port 91 capable of supplying the second liquid LC is formed substantially at the center of the lower surface of the second nozzle member 9A facing the upper surface 24 of the substrate table 22.
- the recovery port 92 capable of recovering the second liquid LC is formed so as to surround the supply port 91 on the lower surface of the second nozzle member 9A.
- the air supply port 11 for supplying the gas for removing the second liquid LC is formed so as to surround the recovery port 92 on the lower surface of the second nozzle member 9A.
- FIG. 13 is a schematic diagram showing an example of the cleaning operation of the substrate table 22 according to the second embodiment.
- the control device 7 has the second liquid immersion space under the second nozzle member 9A. With the space LS2 formed, the substrate table 22 is moved relative to the second nozzle member 9A as shown by an arrow y4 in FIG. 13, for example. Thereby, a large area of the substrate table 22 can be cleaned.
- the air supply port 11 is disposed outside the second immersion space LS2, and at least the operation of forming the second immersion space LS2 and the gas supply operation from the air supply port 11 are performed. Some are done in parallel. In the example shown in FIG.
- the substrate table 22 is arranged in the second immersion space LS2.
- the gas from the air supply port 11 is supplied to the area of the upper surface 24 of the substrate table 22 after the second liquid LC in the second immersion space LS2 comes into contact with any direction in the XY plane. it can.
- the wide area of the substrate table 22 can be cleaned, and the second liquid LC can be prevented from remaining on the substrate table 22.
- the force described using the second liquid LC as an example for cleaning the substrate table 22 is, of course, as shown in the schematic diagram of FIG.
- the second nozzle member 9 and the measurement table 32 are opposed to each other, and the second immersion space LS2 can be formed with the second liquid LC between the second nozzle member 9 and the measurement table 32. In this case, the measurement table 32 can be cleaned well.
- the supply port 91 for supplying the second liquid LC and the recovery port 92 for recovering the second liquid LC are the same member (second nozzle member). ), But may be formed on separate members.
- the supply port 91 may be provided in the second nozzle member capable of forming the second immersion space LS2 with the substrate table 22 and the like, and the recovery port 92 may be provided in a member different from the second nozzle member. Good.
- a supply port 91 for supplying the second liquid LC is provided on a member different from the second nozzle member capable of forming the second immersion space LS2 between the substrate table 22 and the like. May be.
- the second nozzle member has a lower surface facing the upper surface 24 of the substrate table 22, and can hold the second liquid LC between the lower surface and the upper surface 24 of the substrate table 22. Then, the second liquid LC may be supplied from the supply port 91 formed in another member between the lower surface of the second nozzle member and the upper surface 24 of the substrate table 22.
- the recovery port 92 for recovering the second liquid LC is provided. However, if the second liquid LC can be removed by the gas supplied from the air supply port 11, the recovery port 92 may be omitted.
- the ultrasonic generator 10 causes the second nozzle member 9 to vibrate, thereby applying an ultrasonic wave to the second liquid LC in the second immersion space LS2.
- the characteristic part of the third embodiment is that the ultrasonic generator 10 applies ultrasonic waves (vibration) to the second liquid LC in the second immersion space LS2 by vibrating the substrate table 22.
- components that are the same as or equivalent to those in the above-described embodiment are denoted by the same reference numerals, and the description thereof is simplified or omitted.
- FIG. 15 is a side sectional view showing a part of the exposure apparatus EX according to the third embodiment.
- the ultrasonic generator 10 has an ultrasonic transducer connected to the substrate table 22, and the substrate table 22 is vibrated so that the second immersion liquid is obtained. Apply ultrasonic waves to the second liquid LC in space LS2.
- the ultrasonic transducer of the ultrasonic generator 10 is disposed on the side surface of the substrate table 22.
- the control device 7 applies ultrasonic waves to the second liquid LC in the second immersion space LS2 in a state where the second immersion space LS2 is formed, for example, FIG. 9A and FIG. 9B.
- a force S for moving the substrate table 22 relative to the second nozzle member 9 can be obtained. Also in this embodiment, the force S can be used to clean the substrate table 22 satisfactorily.
- the ultrasonic generator 10 is connected to the measurement table 32, and the second immersion member 9 and the measurement table 32 are opposed to each other to form the second immersion space LS2, and the measurement table 32 is connected to the measurement table 32.
- An ultrasonic wave may be applied to the second liquid LC in the second immersion space LS2 by vibrating the measurement table 32 with the ultrasonic generator 10 that is provided. In this case, the measurement table 32 can be cleaned well.
- the fourth embodiment is a modification of the above-described third embodiment, and a characteristic part of the fourth embodiment is that the substrate table 22 is vibrated using the drive mechanism 5 that moves the substrate table 22. Therefore, ultrasonic waves (vibration) are applied to the second liquid LC in the second immersion space LS2.
- the same or equivalent components as those in the above-described embodiment are denoted by the same reference numerals, and the description thereof is simplified or omitted.
- FIG. 16 is a side sectional view showing a part of the exposure apparatus EX according to the fourth embodiment.
- the ultrasonic generator 10A includes a drive mechanism 5 that can move the substrate table 22.
- the control device 7 vibrates the substrate table 22 using, for example, the fine movement system 14 of the drive mechanism 5 in a state where the second immersion space LS2 is formed between the second nozzle member 9 and the substrate table 22.
- the control device 7 vibrates the substrate table 22 on the stage body 21 using the fine movement system 14 in a state where the second immersion space LS2 is formed (fine
- the arrows yl, y2, y3 in Fig. 9A, Fig. 9B, Fig. 10 and Fig. 13 can be used with the coarse motion system 13 while applying ultrasonic waves to the second liquid LC in the second immersion space LS2.
- the substrate table 22 can be moved relative to the second nozzle member 9.
- the substrate table 22 can be cleaned satisfactorily.
- the force S causing the substrate table 22 to vibrate using the drive mechanism 5 in a state where the second nozzle member 9 and the substrate table 22 face each other.
- the second immersion space LS2 formed by facing the groove member 9 and the measurement table 32
- the second liquid LC in the second immersion space LS2 is vibrated by vibrating the measurement table 32 using the drive mechanism 5. You may make it give an ultrasonic wave to. In this case, the measurement table 32 can be cleaned well.
- the vibration of the second nozzle member 9 and the vibration of the substrate table or the measurement table 32) may be used in combination to apply ultrasonic waves (vibration) to the liquid in the second immersion space LS2. Good.
- the second immersion space LS2 is formed by the second liquid LC different from the first liquid LQ, but the second liquid immersion is performed by the first liquid LQ.
- Space LS2 may be formed.
- the first liquid LQ used has a cleaning capability (for example, pure water or less). If the contamination is from the outside (for example, a fluorinated liquid), or the generated contamination can be well removed (cleaned) by the first liquid LQ, the second immersion space L S2 is removed by the first liquid LQ.
- the substrate table 22 and the like may be cleaned with the liquid in the second immersion space LS2.
- the first immersion space LSI does not exist during the tallying operation using the second nozzle member 9, but the first liquid LQ is the first liquid LQ.
- the cleaning operation may be performed using the second nozzle member 9 in a state where the one immersion space is formed. For example, as described above, while the substrate table 22 is being cleaned using the second nozzle member 9, the first immersion liquid is moved by moving the measurement table 32 to a position facing the first nozzle member 8. Spatial LSI may be maintained. Alternatively, while the measurement table 32 is being cleaned using the second nozzle member 9, the first immersion space LSI is moved by moving the substrate table 22 to a position facing the first nozzle member 8. May be maintained.
- an object different from the substrate table 22 and the measurement table 32 may be disposed at a position facing the first nozzle member 8.
- the substrate exposure operation can be started immediately after the completion of the tallying operation. it can.
- the substrate table is formed with the second immersion space LS2 formed by the second liquid LC between the second nozzle member 9 and the substrate table 22 (or the measurement table 32). 22 (or measurement table 32) force for tallying
- the second liquid LC is supplied from the first nozzle member 8, and the second liquid is supplied between the first nozzle member 8 and the substrate table 22 (measurement table 32).
- the substrate table 22 (measurement table 32) may be cleaned with the immersion space LS3 formed by LC.
- the substrate table 22 is vibrated in a state where the immersion space LS3 is formed by the second liquid LC between the first nozzle member 8 and the substrate table 22, so that the immersion is performed. Apply ultrasonic waves (vibration) to the liquid in the space.
- ultrasonic waves vibration
- FIG. 17 is a side sectional view showing a part of the exposure apparatus EX according to the fifth embodiment.
- the ultrasonic generator 10 has an ultrasonic transducer connected to the substrate table 22, and the first nozzle member is vibrated by vibrating the substrate table 22. Ultrasonic is applied to the liquid LC in the immersion space LS3 formed between the two.
- the ultrasonic transducer of the ultrasonic generator 10 is disposed on the side surface of the substrate table 22.
- the controller 7 can move the substrate table 22 relative to the first nozzle member 8 while applying ultrasonic waves to the liquid LC in the immersion space LS3 in a state where the immersion space LS3 is formed.
- the force S can be used to tally the substrate table 22 satisfactorily.
- the first nozzle member 8 (for example, the lower surface) and / or the terminal optical element FL (for example, the light emitting surface) can be cleaned. Therefore, the first immersion space LSI can be formed by using the first nozzle member 8 that has been tapped so that the optical path space of the exposure light EL is filled with the first liquid LQ. If the substrate table 22 is not targeted for cleaning, the dummy substrate DP held on the substrate table 22 and the first nozzle member 8 and / or the last optical element FL are opposed to each other. May be vibrated
- the immersion space LS3 may be formed by the first liquid LQ.
- the first liquid LQ used has a cleaning capability (for example, a fluorinated liquid) or the generated contamination can be removed well by the first liquid LQ (can be tallyed). Good cleaning with 1st liquid LQ.
- a cleaning capability for example, a fluorinated liquid
- the generated contamination can be removed well by the first liquid LQ (can be tallyed).
- the ultrasonic generator 10 is connected to the measurement table 32, and the first nozzle member 8 and the measurement table 32 are opposed to each other to form the immersion space LS3 and connected to the measurement table 32.
- An ultrasonic wave may be applied to the liquid LC in the immersion space LS3 by vibrating the measurement table 32 with the ultrasonic generator 10.
- at least one of the measurement table 32, the first nozzle member 8, and the last optical element FL is preferably tally-fixed. You can
- the sixth embodiment is a modification of the above-described fifth embodiment, and a characteristic part of the sixth embodiment is that the substrate table 22 is vibrated using the drive mechanism 5 that moves the substrate table 22.
- ultrasonic waves vibration
- the same or equivalent components as those in the above-described embodiment are denoted by the same reference numerals, and the description thereof is simplified or omitted.
- FIG. 18 is a side sectional view showing a part of the exposure apparatus EX according to the sixth embodiment.
- the ultrasonic generator 10A includes a drive mechanism 5 that can move the substrate table 22.
- the control device 7 oscillates the substrate table 22 by using, for example, the fine movement system 14 of the drive mechanism 5 in a state where the immersion space LS3 is formed between the first nozzle member 8 and the substrate table 22.
- 1 Ultrasonic wave is applied to the liquid LC in the immersion space LS3 formed between the nozzle member 8 and the substrate table 22.
- the immersion space LS3 may be formed by the first liquid LQ.
- the control device 7 vibrates the substrate table 22 on the stage main body 21 using the fine movement system 14 in the state where the immersion space LS3 is formed (fine vibration).
- the substrate table 22 can be moved relative to the first nozzle member 8 by using the coarse motion system 13 while applying ultrasonic waves to the liquid LC in the immersion space LS3.
- the force S is used to satisfactorily tally at least one of the substrate table 22, the first nozzle member 8, and the last optical element FL.
- the first nozzle member In the state where the immersion space LS3 is formed by facing 8 and the measurement table 32, the measurement table 32 is vibrated using the drive mechanism 5 so that ultrasonic waves are applied to the liquid LC in the immersion space LS3. Also good. In this case, at least one of the measurement table 32, the first nozzle member 8, and the last optical element FL can be cleaned satisfactorily.
- the first nozzle member 8 and the substrate table 22 may be used in time series.
- the first liquid LQ is water (pure water) and the second liquid LC is dissolved gas control water (hydrogen water, nitrogen water, etc.) in which a predetermined gas is dissolved in water
- the second liquid LQ After the cleaning operation used, the cleaning operation using the first liquid LQ can be performed. After the cleaning operation is completed, the time required for the replacement with the first liquid LQ can be shortened.
- the first nozzle member 8 may be vibrated to apply ultrasonic waves (vibration) to the liquid in the immersion space LS3.
- the substrate table 22 or the measurement table 32) facing the first nozzle member 8 may be vibrated! / And may not be vibrated.
- the second nozzle member 9 may be omitted, and the exposure apparatus EX may perform a cleaning operation using the first nozzle member 8 and the second nozzle member 9. It may be possible to execute both of the cleaning operations using.
- the nozzle member (8, 9) or the like is not disposed at a position facing the upper surface of the substrate table 22 (or the measurement table 32), and the substrate table.
- the substrate table 22 (or measurement table) With the liquid immersion space (immersion area) formed on the bull 22, the substrate table 22 (or measurement table) is vibrated to generate ultrasonic waves on the liquid in the immersion space (immersion area). You may make it give. This also makes it possible to clean the substrate table 22 (or measurement table) satisfactorily using liquid and ultrasonic waves.
- vibration (ultrasonic waves) of 20 KHz or more is applied to the liquid (LQ or LC) in order to promote tiling of an object such as the substrate table 22.
- Forces to be applied Liquid LQ may be given vibrations of less than 20 KHz.
- the force for determining whether or not to perform the cleaning operation based on the detection result of the alignment system 40 having the image sensor includes a detection device 80 that can detect the quality (water quality) of the first liquid LQ recovered from the recovery port 82! /. Therefore, based on the detection result of the detection device 80! /, Thus, it may be determined whether or not to perform the cleaning operation.
- the detector 80 is a TOC meter 80 for measuring total organic carbon in the first liquid LQ.
- the control device 7 may perform the cleaning operation when it is determined that the first liquid LQ after contacting the substrate table 22 is contaminated based on the detection result of the detection device 80. Good.
- the contamination state of the first liquid LQ in contact with the substrate table 22 also changes, so that the control device 7 contacts the substrate table 22 and then the first liquid LQ recovered from the recovery port 82.
- the contamination state of the substrate table 22 can be obtained (estimated) based on the detection result. If the control device 7 determines that the contamination state of the substrate table 22 is not within the allowable range based on the detection result of the detection device 80, the control device 7 stops the exposure operation and executes the cleaning operation.
- the detection result of the detection device 80 may vary.
- the detection result of the detection device 80 when the first immersion space LS 1 is formed between the first region of the substrate table 22 and the first nozzle member 8, and the second result of the substrate table 22 If there is a difference between the detection result of the detection device 80 when the first immersion space LSI is formed between the region and the first nozzle member 8, the first region of the substrate table 22 It can be judged that there is a difference between the contamination status and the contamination status of the second area.
- the control device 7 can intensively clean the contaminated area. Further, when the quality of the liquid LQ is detected by the detection device 80 while moving the substrate table 22 relative to the first immersion space LSI, the first liquid LQ is contaminated even though it is contaminated. If the detection result of the detector 80 does not vary greatly depending on the position of the substrate table 22 with respect to the immersion space LSI, it is determined that the first nozzle member 8 (the recovery port 82, the porous member 83) is contaminated. it can.
- the liquid L is detected by the detection device 80.
- the detection device 80 By detecting the contamination state of Q, it is possible to detect the contamination state of the first nozzle member 8 (recovery port 82, porous member 83).
- the exposure substrate P is exposed with the image of the pattern of the mask M, and after the image processing is performed, the exposure substrate P is formed on the exposure substrate P as shown in FIG. 20B.
- the shape of the measured pattern may be measured by a predetermined measuring device 100, and it may be determined whether or not to perform the cleaning operation based on the measurement result. For example, if it is determined that the pattern defect is not within the allowable range based on the measurement result of the pattern shape, the control device 7 determines that the contamination state of the substrate table 22 is not within the allowable range, and performs the cleaning operation. To do.
- a dummy substrate DP having a high cleanliness is held in the holding portion 23 of the substrate table 22, and the first immersion space LSI is formed on the held dummy substrate DP.
- the substrate table 22 (substrate stage 2) is moved with the same movement locus as that of the normal exposure sequence. )
- the dummy substrate DP is unloaded from the substrate table 22 as shown in FIG. 21B, the contamination state of the dummy substrate DP is detected by the predetermined detection device 101, and the detection result is Based on this, it may be determined whether or not to perform the cleaning operation.
- the substrate table 22 is moved in a state where the first immersion space LSI is formed between the first nozzle member 8 and the dummy substrate DP, the exposure light is not irradiated to the dummy substrate.
- the detection device 101 can detect the contamination state of the substrate table 22, the first nozzle member 8, or the like. Depending on the contamination state of the substrate table 22 etc., the contamination state of the dummy substrate DP (such as the amount of contaminants adhering to the dummy substrate DP) after the above operation is performed changes. Can be obtained (estimated) based on the detection result by detecting the detected state with the predetermined detection device 101. Then, the control device 7 can determine whether to perform the cleaning operation based on the detection result of the detection device 101.
- the holding portion 23 of the substrate table 22 has a surface with high flatness.
- the dummy substrate DP to be held is detected, and the shape (flatness) of the surface of the dummy substrate DP is detected by the oblique incidence type focus' leveling detection system 60 having the projection device 61 and the light receiving device 62 described above. Based on the detection result, it may be determined whether or not the cleaning operation is to be executed.
- the control device 7 determines that the contamination state of the substrate table 22 is not within the allowable range, and executes the cleaning operation.
- the projection unit 61 may irradiate the holding unit 23 directly with the detection light.
- the control device 7 can detect the contamination state of the substrate table 22 based on the light reception result of the light receiving device 62 at that time.
- the cleaning operation may be executed every time a predetermined number of substrates P are exposed, every lot, or every predetermined time interval without detecting the contamination state as described above.
- FIG. 23 is a schematic block diagram that shows an exposure apparatus EX according to the seventh embodiment.
- the exposure apparatus EX includes a detection device 120 that can detect the contamination state of the substrate table 22.
- the detection device 120 includes a bending member (flexible member) 121 that can be bent, a driving device 122 that bends the bending member 121, and a substrate that is provided on the distal end side of the bending member 121 and is in contact with the liquid LQ.
- An observation device 123 that can observe the contamination state of the table 22 is provided.
- the bending member 121 has a fiberscope.
- the driving device 122 includes a plurality of wires whose one ends are connected to the distal ends of the bending members 121, a rotating body connected to the other ends of the wires, and an actuator (motor) capable of rotating the rotating body. .
- the observation device 123 includes an optical system disposed at the tip of the bending member 121 and an optical system via the optical system.
- An image pickup device that acquires an image (image).
- the detection device 120 according to the present embodiment is appropriately referred to as an endoscope device 120.
- the endoscope device 120 further includes an output device 124 that is provided on the rear end side (root side) of the bending member 121 and that outputs the observation result of the observation device 123.
- the output device 124 includes a display device and the like.
- the endoscope apparatus 120 includes an operation device that is provided on the rear end side of the bending member 121 and operates the drive device 122.
- the endoscope apparatus 120 is provided on the distal end side of the bending member 121, and can clean the substrate table 22, and a driving apparatus that can drive the cleaning apparatus 126. And.
- the operation device 125 can operate the cleaning device 126.
- the exposure apparatus EX is, for example, a first apparatus provided on the floor surface in a clean room.
- a body BD including a first column CL1 and a second column CL2 provided on the first column CL1 is provided.
- the first column CL1 includes a plurality of first support columns 130 and a lens barrel surface plate 132 supported by the first support columns 130 via vibration isolating devices 131.
- the second column CL2 includes a plurality of second support columns 133 provided on the lens barrel surface plate 132, and a base member 135 supported by the second support columns 133 via vibration isolator 134.
- the mask stage 1 is movable on the base member 135.
- the substrate stage 2 is movable on the base member BP.
- the base member BP is supported on the floor via a vibration isolator 136.
- Each of the anti-vibration devices 131, 134, 136 includes an active anti-vibration device having a predetermined actuator and a damper mechanism.
- openings (holes) 140 and 141 in which at least a part of the endoscope device 120 can be disposed are formed.
- the bending member 121 of the endoscope apparatus 120 can be inserted into the openings 140 and 141 from the outside of the body BD, and the distal end of the bending member 121 is accessible to the substrate table 22.
- the output device 124, the operation device 125, and the like arranged at the rear end of the bending member 121 are arranged outside the body BD.
- the drive device 122 is driven to operate the bending member 121 and the cleaning device 126 is operated.
- the cleaning device 126 includes a pad member 126P.
- the pad member 126P is formed of, for example, a nonwoven fabric.
- the pad member 126P may be a grindstone member.
- the endoscope apparatus 120 can remove contaminants on the substrate table 22 by pressing the pad member 126P against the substrate table 22 or rubbing the substrate table 22 with the pad member 126P.
- the control device 7 detects the contamination state of the substrate table 22 with the alignment system 40 or the like every time a predetermined number of substrates P are exposed, every lot, or every predetermined time interval. To do.
- the control device 7 controls the cleaning operation for the substrate table 22 based on the detection result of the contamination state of the substrate table 22 by the alignment system 40 or the like. If the contamination state of the upper surface 24 of the substrate table 22 is not within the allowable range based on the detection result of the alignment system 40 etc., the control device 7 performs the cleaning operation using the endoscope device 120. Start.
- the control device 7 controls the driving device 122 of the endoscope device 120 to bring the tip of the bending member 121 closer to the substrate table 22. As shown in FIG. 24, the control device 7 monitors the position of the cleaning device 12 6 (pad member 126P) and the contaminant while monitoring the contamination on the substrate table 22 with the observation device 123 of the endoscope device 120. Adjust the relationship and drive the cleaning device 126 to remove contaminants. As a result, the substrate table 22 (the holding unit 23 and / or the upper surface 24) is cleaned.
- the endoscope device 120 includes the output device 124 and the operation device 125 as described above, for example, an operator monitors the observation result of the observation device 123 with the output device 124, and the opening 140, In addition to operating the bending member 121 of the endoscope apparatus 120 inserted into 141, the cleaning operation may be performed by operating the cleaning device 126.
- the alignment state of the substrate table 22 is detected by the alignment system 40 or the like and the cleaning operation using the endoscope apparatus 120 is executed based on the detection result has been described.
- the alignment system 40 or the like for example, every time a predetermined number of substrates P are exposed, every lot, or every predetermined time interval, the openings 140 and 141 are opened.
- the bending member 121 of the endoscope apparatus 120 is inserted, the substrate table 22 is observed with the observation device 123 provided on the distal end side of the bending member 121, and the substrate table 22 is based on the observation result.
- the substrate table 22 may be cleaned by operating the cleaning device 126 provided on the distal end side of the bending member 121.
- the operation of the cleaning device 126 may be executed by the control device 7 or may be executed by the operator.
- the cleaning device 126 is not limited to the pad member 126P, and may include a tweezers device that can catch contaminants (foreign matter). By operating the tweezers, contaminants (foreign matter) can be removed.
- the force endoscope apparatus 120 described as an example in which the endoscope apparatus 120 cleans the substrate table 22 (holding unit 23) has the measurement table 32 of the measurement stage 3.
- the first nozzle member 8 can also be cleaned.
- the exposure apparatus EX includes the second nozzle member 9 as described in the above embodiment, the endoscope apparatus 120 can also clean the second nozzle member 9.
- the endoscope device 120 is a member to which the cleaning device 126 at the tip of the bending member 121 is accessible, for example, the stage body 21 of the substrate stage 2, the stage body 21 of the measurement stage 3, and the base member All members constituting the exposure apparatus EX such as BP can be cleaned.
- a characteristic part of this embodiment is that cleaning is performed using a tiling member.
- components that are the same as or equivalent to those in the above-described embodiment are denoted by the same reference numerals, and the description thereof is simplified or omitted.
- FIG. 25 is a schematic diagram showing a cleaning member CP according to the present embodiment.
- the tiling member CP is a plate-like member (disk-like member) having substantially the same outer shape as the exposure substrate P, and is attached to the holding portion 23 of the substrate table 22 that can hold the exposure substrate P. Removably held.
- the cleaning member CP held on the substrate table 22 can be disposed at a position facing the first nozzle member 8 capable of forming the liquid immersion space LSI for the liquid LQ.
- the cleaning member CP is formed of glass such as quartz. Yes.
- the control device 7 immerses the liquid LQ between the first nozzle member 8 and the cleaning member CP. Form space LS I.
- the control device 7 adjusts at least one of the liquid supply amount per unit time from the supply port 81 of the first nozzle member 8 and the liquid recovery amount per unit time from the recovery port 82 to obtain a liquid Immersion space Move the interface of LS I. As shown in the schematic diagram of Fig. 26, by moving the interface of the immersion space LS I, it adheres to the lower surface of the first nozzle member 8, such as the lower surface of the porous member (mesh) 83 placed in the recovery port 82 Foreign material force that has been removed from the first nozzle member 8.
- the foreign matter removed from the first nozzle member 8 is held on the surface of the cleaning member CP on the substrate table 22 facing the first nozzle member 8. That is, the cleaning member CP holds the foreign matter removed from the first nozzle member 8 while facing the first nozzle member 8 while being held by the substrate table 22.
- the cleaning member CP can hold the foreign matter removed from the first nozzle member 8 by electrostatic force.
- the cleaning member CP can hold the foreign material well by charging the tiling member CP negatively.
- the cleaning member CP is made of glass, and can hold foreign matter satisfactorily by electrostatic force.
- the dusting member CP holds the foreign matter well, the foreign matter force S held on the surface of the cleaning member CP is prevented from adhering to the lower surface of the first nozzle member 8 again.
- the cleaning member CP can hold the foreign matter removed from the first nozzle member 8 by the tallying operation using the liquid LQ.
- the cleaning member CP has a holding region CP1 and a liquid repellent region CP2 that can hold a foreign object by electrostatic force.
- the surface area S of the cleaning member CP facing the first nozzle member 8 and the holding area CP1 capable of holding foreign matter removed from the first nozzle member 8 by the electrostatic force and the holding area CP1 are provided.
- a liquid repellent region CP2 formed on the substrate is provided.
- the holding region CP1 is formed on the surface of the glass, and the liquid repellent region CP2 is formed on the glass, for example, a fluororesin such as polytetrafluoroethylene (Teflon (registered trademark)) or an acrylic resin. It is made of a film of liquid material.
- the control device 7 retracts the immersion space LS I from the cleaning member CP, and is shown in the schematic diagram of FIG.
- the cleaning member CP is unloaded from the substrate table 22 using a predetermined transport device.
- the cleaning member CP is carried out of the substrate table 22 while holding foreign matter.
- the holding region CP1 that holds foreign matter by electrostatic force has a force that may cause a liquid film, a droplet, etc. along with the foreign matter. Since the liquid repellent region CP2 is formed so as to surround the liquid repellent region CP2, the liquid in the holding region CP1 is prevented from leaking outside the liquid repellent region CP2.
- liquid is prevented from leaking from the cleaning member CP during the conveyance of the cleaning member Cp.
- the foreign matter adhering to the lower surface of the first nozzle member 8 can be removed, and the foreign matter can be carried out to the outside of the exposure apparatus EX together with the cleaning member CP.
- the liquid used for the cleaning operation may be vibrated, as in the first to sixth embodiments described above.
- the exposure apparatus EX includes the second nozzle member 9 described in the above embodiment.
- the operation of removing the foreign matter from the second nozzle member 9 can be executed using the cleaning member CP.
- the force that fills the optical path space on the light emission side (image plane side) of the terminal optical element of the projection optical system with a liquid is also possible to employ a projection optical system in which the optical path space on the light incident side (object plane side) of the last optical element is filled with liquid.
- the first liquid LQ in each of the above embodiments may be a force S that is water, or a liquid other than water.
- the light source of the exposure light EL is an F laser
- the F laser light is water.
- Fluorine fluid such as PFPE
- fluorine oil may be used.
- the liquid LQ is stable against the photoresist applied to the projection optical system PL or the substrate P surface that is transparent to the exposure light EL and has a refractive index as high as possible (for example, seda).
- One oil can also be used.
- Liquid LQ having a refractive index of about 1.6 to about 1.8 may be used.
- the optical element (final optical element FL, etc.) of the projection optical system PL that comes into contact with the liquid LQ is, for example, quartz (silica), calcium fluoride (fluorite), barium fluoride, strontium fluoride, lithium fluoride, And a single crystal material of a fluorinated compound such as sodium fluoride.
- the terminal optical element may be formed of a material having a refractive index higher than that of quartz and fluorite (for example, 1.6 or more). Examples of materials having a refractive index of 1.6 or more include sapphire and germanium dioxide disclosed in WO 2005/059617, or potassium chloride disclosed in WO 2005/059618 ( A refractive index of about 1.75) can be used.
- a thin film having a lyophilic property and / or a dissolution preventing function may be formed on a part of the surface of the terminal optical element (including at least the contact surface with the liquid) or all.
- Quartz has a high affinity with liquid and does not require a dissolution preventing film, but fluorite can form at least a dissolution preventing film.
- various fluids such as a supercritical fluid can be used. Examples of liquids having a refractive index higher than that of pure water (eg, 1.5 or more) include CH bonds such as isopropanol having a refractive index of about 1.50 and glycerol (glycerin) having a refractive index of about 1 ⁇ 61 or O.
- the liquid may be a mixture of any two or more of these liquids, or may be a mixture obtained by adding (mixing) at least one of these liquids to pure water.
- the liquid is pure water with a base or acid such as H + , Cs + , K +, C ⁇ , SO 2 —, PO 2 etc.
- projection light with a small light absorption coefficient and low temperature dependence It is preferably stable to a photosensitive material (or a top coat film! / Or an antireflection film, etc.) applied to the surface of an academic system and / or a substrate.
- the substrate can be provided with a top coat film or the like that protects the photosensitive material from the liquid.
- the substrate P in each of the above embodiments is used not only for semiconductor wafers for manufacturing semiconductor devices but also for glass substrates for display devices, ceramic wafers for thin film magnetic heads, or exposure apparatuses.
- a mask or reticle master synthetic quartz, silicon wafer
- a film member is applied.
- the substrate is not limited to a circular shape, and may be another shape such as a rectangle.
- the exposure apparatus EX in addition to the step-and-scanning scanning type exposure apparatus (scanning stepper) that performs the mask exposure of the mask M pattern by synchronously moving the mask M and the substrate P,
- the present invention can also be applied to a step-and-repeat projection exposure apparatus (steno) in which the pattern of the mask M is collectively exposed while the mask M and the substrate P are stationary, and the substrate P is sequentially moved stepwise.
- steno step-and-repeat projection exposure apparatus
- step-and-repeat exposure a reduced image of the first pattern was transferred onto the substrate P using the projection optical system while the first pattern and the substrate P were almost stationary. Thereafter, with the second pattern and the substrate P being substantially stationary, a reduced image of the second pattern may be partially overlapped with the first pattern using the projection optical system to be collectively exposed on the substrate P.
- stitch type batch exposure system The stitch type exposure apparatus can also be applied to a step-and-stitch type exposure apparatus in which at least two patterns are partially overlapped and transferred on the substrate P, and the substrate P is sequentially moved.
- the present invention relates to JP-A-10-163099, JP-A-10-214783 (corresponding to US Pat. Nos. 6,341,007, 6,400,441, 6,549,269, and 6,590,634), Special Table 2000-505958.
- the present invention can also be applied to a multistage type (twin stage type) exposure apparatus having a plurality of substrate stages as disclosed in Japanese Patent Publication No. (corresponding US Pat. No. 5,969,441).
- the present invention can also be applied to an exposure apparatus that does not include a measurement stage, as disclosed in WO99 / 49504.
- the present invention can also be applied to an exposure apparatus provided with a plurality of substrate stages and measurement stages.
- the present invention relates to Japanese Patent Application Laid-Open No. 6-124873.
- an immersion exposure apparatus that performs exposure in a state where the entire surface of a substrate to be exposed is immersed in a liquid as disclosed in Japanese Patent Application Laid-Open No. 10-303114 and US Pat. No. 5,825,043. Is also applicable.
- the present invention is applied to an exposure apparatus and an exposure method that do not use the projection optical system PL, which has been described by taking an exposure apparatus including the projection optical system PL as an example.
- Power S can be.
- the projection optical system PL is not used in this way, the exposure light is irradiated onto the substrate via an optical member such as a lens, and the immersion space is placed in a predetermined space between the optical member and the substrate. Is formed.
- the type of exposure apparatus EX is not limited to an exposure apparatus for manufacturing a semiconductor element that exposes a semiconductor element pattern onto a substrate P, but an exposure apparatus for manufacturing a liquid crystal display element or a display, a thin film magnetic head, It can be widely applied to imaging devices (CCD), micromachines, MEMS, DNA chips, or exposure apparatuses for manufacturing reticles or masks.
- CCD imaging devices
- MEMS micromachines
- DNA chips DNA chips
- an exposure for exposing a line 'and' space pattern on the substrate P by forming interference fringes on the substrate P can also be applied to an apparatus (lithography system).
- JP-T-2004-519850 corresponding US Pat. No. 6,611,316
- two mask patterns are formed on a substrate via a projection optical system.
- the present invention can also be applied to an exposure apparatus that performs double exposure of one shot area on a substrate almost simultaneously by one scanning exposure.
- the present invention can also be applied to proximity type exposure apparatuses, mirror projection aligners, and the like.
- the exposure apparatus EX of the above embodiment is manufactured by assembling various subsystems including each component so as to maintain predetermined mechanical accuracy, electrical accuracy, and optical accuracy.
- various optical systems! /, Adjustments to achieve optical accuracy, various mechanical systems! /, Mechanical accuracy Adjustments to achieve this and various electrical systems are adjusted to achieve electrical accuracy.
- the assembly process from the various subsystems to the exposure apparatus includes mechanical connections, electrical circuit wiring connections, and pneumatic circuit piping connections between the various subsystems. Needless to say, there is an assembly process for each subsystem before the assembly process from the various subsystems to the exposure apparatus. When the assembly process of the various subsystems to the exposure apparatus is completed, comprehensive adjustments are performed to ensure various accuracies for the exposure apparatus as a whole. It is desirable to manufacture the exposure equipment in a tailored room where the temperature and cleanliness are controlled!
- a microdevice such as a semiconductor device includes a step 201 for performing a function-performance design of the microdevice, a step 202 for manufacturing a mask (reticle) based on this design step, Step 203 for manufacturing a substrate as a base material, substrate processing step 204 including substrate processing (exposure processing) for exposing a pattern of a mask to the substrate and developing the exposed substrate according to the above-described embodiment, device assembly step ( (Including dicing process, bonding process, package process, etc.) 205, inspection process 206, etc.
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- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Microscoopes, Condenser (AREA)
Description
Claims
Priority Applications (2)
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JP2008532073A JP5151981B2 (ja) | 2006-08-30 | 2007-08-28 | 露光装置及びデバイス製造方法 |
KR1020097002659A KR101523388B1 (ko) | 2006-08-30 | 2007-08-28 | 노광 장치, 디바이스 제조 방법, 클리닝 방법 및 클리닝용 부재 |
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WO2008026593A1 true WO2008026593A1 (fr) | 2008-03-06 |
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PCT/JP2007/066673 WO2008026593A1 (fr) | 2006-08-30 | 2007-08-28 | Dispositif d'exposition, procédé de fabrication de dispositif, procédé de nettoyage et élément de nettoyage |
Country Status (5)
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US (1) | US8570484B2 (ja) |
JP (3) | JP5151981B2 (ja) |
KR (1) | KR101523388B1 (ja) |
TW (1) | TWI508130B (ja) |
WO (1) | WO2008026593A1 (ja) |
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2007
- 2007-08-28 JP JP2008532073A patent/JP5151981B2/ja not_active Expired - Fee Related
- 2007-08-28 KR KR1020097002659A patent/KR101523388B1/ko active IP Right Grant
- 2007-08-28 US US11/892,944 patent/US8570484B2/en not_active Expired - Fee Related
- 2007-08-28 WO PCT/JP2007/066673 patent/WO2008026593A1/ja active Application Filing
- 2007-08-29 TW TW096132030A patent/TWI508130B/zh not_active IP Right Cessation
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2012
- 2012-03-30 JP JP2012082595A patent/JP2012156539A/ja active Pending
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Also Published As
Publication number | Publication date |
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JP5151981B2 (ja) | 2013-02-27 |
TW200823967A (en) | 2008-06-01 |
TWI508130B (zh) | 2015-11-11 |
JP2012156539A (ja) | 2012-08-16 |
JP2013021364A (ja) | 2013-01-31 |
JP5644827B2 (ja) | 2014-12-24 |
KR20090060266A (ko) | 2009-06-11 |
US8570484B2 (en) | 2013-10-29 |
US20080055575A1 (en) | 2008-03-06 |
JPWO2008026593A1 (ja) | 2010-01-21 |
KR101523388B1 (ko) | 2015-05-27 |
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