WO2007001045A1 - 露光装置、基板処理方法、及びデバイス製造方法 - Google Patents
露光装置、基板処理方法、及びデバイス製造方法 Download PDFInfo
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- WO2007001045A1 WO2007001045A1 PCT/JP2006/312973 JP2006312973W WO2007001045A1 WO 2007001045 A1 WO2007001045 A1 WO 2007001045A1 JP 2006312973 W JP2006312973 W JP 2006312973W WO 2007001045 A1 WO2007001045 A1 WO 2007001045A1
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- WIPO (PCT)
- Prior art keywords
- substrate
- exposure apparatus
- exposure
- thin film
- detection
- Prior art date
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—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
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—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
- G03F7/70483—Information management; Active and passive control; Testing; Wafer monitoring, e.g. pattern monitoring
- G03F7/70605—Workpiece metrology
- G03F7/70608—Monitoring the unpatterned workpiece, e.g. measuring thickness, reflectivity or effects of immersion liquid on resist
Definitions
- Exposure apparatus substrate processing method, and device manufacturing method
- the present invention relates to an exposure apparatus, a substrate processing method, and a device manufacturing method for exposing a substrate by irradiating exposure light onto the substrate.
- an immersion exposure apparatus that forms a liquid immersion area on a substrate and exposes the substrate through the liquid as disclosed in the following patent document Has been devised.
- Patent Document 1 Pamphlet of International Publication No. 99Z49504
- a film may not be formed on the substrate in a desired state, and for example, a part of the film may peel off the substrate force. If a part of the film is peeled off, the part of the peeled film may become a foreign substance and adhere to the substrate or be mixed into the liquid. If the substrate is exposed in the presence of foreign matter, defects such as defects in the pattern formed on the substrate may occur, which may reduce device productivity.
- the present invention has been made in view of such circumstances, and provides an exposure apparatus, a substrate processing method, and a device manufacturing method capable of satisfactorily exposing a substrate and suppressing a decrease in device productivity. For the purpose.
- the exposure light (E) is applied to the substrate (P) on which the thin film (Rg, Tc) is formed.
- L) is an exposure apparatus that exposes the substrate, and is provided with an exposure apparatus (EX) that includes a detection device (60) that detects the formation state of thin films (Rg, Tc) on the substrate (P). Is done.
- the detection device for detecting the formation state of the thin film on the substrate since the detection device for detecting the formation state of the thin film on the substrate is provided, the decrease in device productivity is suppressed using the detection result of the detection device. Measures can be taken.
- an exposure apparatus that exposes a substrate (P) by irradiating the substrate (P) with exposure light (EL) through a liquid (LQ).
- An exposure apparatus (EX) provided with a detection apparatus (40, 60 ′) for detecting the edge state of P) is provided.
- the detection device for detecting the state of the edge of the substrate since the detection device for detecting the state of the edge of the substrate is provided, the detection result of the detection device is used to suppress a decrease in device productivity. You can take action.
- the substrate (P) on which the thin film (Rg, Tc) is formed is irradiated with exposure light (EL) through the liquid (LQ) to expose the substrate.
- An optical system (IL) disposed in the optical path of the EL); and a detection device (40, 60 ′) for detecting defects in the thin films (Rg, Tc) of the substrate (P) provided with the liquid (EL); An exposure apparatus (EX) equipped with is provided.
- the detection device for detecting a defect in the thin film (Rg, Tc) of the substrate (P) provided with the liquid (EL) is provided.
- the results can be used to take measures to reduce device productivity degradation and exposure apparatus failure.
- a device manufacturing method using the exposure apparatus (EX) of the above aspect According to the fourth aspect of the present invention, a device can be manufactured with good productivity.
- a substrate processing method for exposing a substrate (P) on which a film (Rg, Tc) is formed, the substrate (P) being a substrate holding member (4). And holding the substrate; The substrate (P) held on the material (4) is irradiated with exposure light (EL) through the liquid (LQ) to expose the substrate (P); and the substrate (P) is exposed to exposure light (EL
- a substrate processing method comprising: detecting a state of a film (Rg, Tc) of a substrate (P) before irradiating the substrate (P).
- a processing method for a substrate exposed through a liquid comprising: forming a thin film on the substrate (SAO); and inspecting a defect in the thin film (SA2, SB2, SC3); supplying a liquid onto the thin film (SB4, SC8); irradiating the substrate with the exposure light through the supplied liquid (SA5, SB5, SC9)
- SAO thin film on the substrate
- SB4, SC8 inspecting a defect in the thin film
- SB5, SB5, SC9 A substrate processing method is provided.
- defects in the thin film (Rg, Tc) formed on the substrate are detected in advance before the substrate (P) is exposed through the liquid. Therefore, it is possible to suppress a decrease in device productivity and to prevent exposure apparatus failures.
- the substrate processing method of the above aspect is used to expose the substrate, to develop the exposed substrate, and to process the developed substrate.
- a device manufacturing method is provided. According to the seventh aspect of the present invention, a device can be manufactured with good productivity.
- the substrate can be satisfactorily exposed, a reduction in device productivity can be suppressed, and a failure of the exposure apparatus can be prevented.
- FIG. 1 is a schematic block diagram that shows an exposure apparatus according to a first embodiment.
- FIG. 2 is a schematic block diagram that shows an exposure apparatus main body.
- FIG. 3 is a cross-sectional view showing an example of a substrate on which a thin film is formed.
- FIG. 4 is a schematic configuration diagram showing the detection device according to the first embodiment.
- FIG. 5 is a flowchart for explaining an exposure method according to the first embodiment.
- FIG. 6 is a flowchart for explaining an exposure method according to the second embodiment.
- FIG. 7 is a schematic configuration diagram showing a detection device according to a second embodiment.
- FIG. 8 is a schematic block diagram that shows an exposure apparatus according to a third embodiment.
- FIG. 9 is a flowchart for explaining an exposure method according to the third embodiment.
- FIG. 10 is a schematic diagram showing that the edge detection system detects the state of the edge of the substrate.
- FIG. 11 is a schematic block diagram that shows an exposure apparatus according to a third embodiment.
- FIG. 12 is a diagram showing a state where an immersion region is formed on the edge of the substrate.
- FIG. 13 is a schematic block diagram that shows an exposure apparatus according to a fourth embodiment.
- FIG. 14 is a schematic diagram for explaining an example of the operation of an exposure apparatus provided with a plurality of substrate stages.
- FIG. 15 is a schematic block diagram that shows an exposure apparatus according to a fifth embodiment.
- FIG. 16 is a schematic diagram showing a detection device according to a fifth embodiment.
- FIG. 17 is a flowchart for explaining an example of a microdevice manufacturing process.
- 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, in the horizontal plane!
- the direction perpendicular to the X-axis direction is the Y-axis direction, and the direction perpendicular to each of the X-axis direction and the Y-axis direction (that is, the vertical direction) is the Z-axis direction.
- the rotation (tilt) directions around the X, Y, and Z axes are the ⁇ X, ⁇ , and 0Z directions, respectively.
- FIG. 1 is a schematic block diagram that shows an exposure apparatus EX according to the first embodiment.
- the exposure apparatus EX performs operations of the exposure apparatus main body S that exposes the substrate P by irradiating the exposure light EL onto the substrate P, the transport apparatus H that transports the substrate P, and the overall operation of the exposure apparatus EX.
- a control device 7 for controlling and a storage device 8 for storing various kinds of information relating to the exposure processing are provided.
- the exposure apparatus body S is held by the mask stage 3 that can move while holding the mask M, the substrate stage 4 that can move by holding the substrate P irradiated with the exposure light EL, and the mask stage 3.
- the substrate here includes a substrate such as a semiconductor wafer coated with various films such as a photosensitive material (photoresist) and a protective film (topcoat film), and the mask is projected onto the substrate in a reduced scale. It includes a reticle on which a device pattern is formed. Further, in this embodiment, it is possible to use a force reflection type mask that uses a transmission type mask as a mask.
- the exposure apparatus EX is connected via a coater 'developer apparatus CZD force interface IF including a coating apparatus for forming a thin film on the substrate P and a developer apparatus for developing the substrate P after the exposure process.
- the thin film formed on the substrate P is a film made of a photosensitive material formed on a base material such as a semiconductor wafer, and a film called a top coat film that covers the film made of the photosensitive material.
- the transport device H can transport the substrate P before exposure processing carried in through the coater / developer device CZD (coating device) force interface IF to the substrate stage 4 of the exposure device main body S. Further, the transport apparatus H can transport the substrate P after the exposure processing from the exposure apparatus body S to the coater / developer apparatus CZD (developer apparatus) via the interface IF.
- the exposure apparatus EX includes a detection device 60 that detects the formation state of the thin film on the substrate P.
- the detection device 60 detects the formation state of the thin film on the substrate P before exposure processing carried into the exposure device EX from the coater / developer device CZD (coating device).
- the detection device 60 is provided on the transport path of the transport device H.
- the coater 'developer device CZD is transferred to the exposure device EX.
- a temperature control device 50 is provided for adjusting the temperature of the substrate P before the exposure processing that has been carried in.
- the temperature control device 50 includes a temperature control holder 51 that holds the back surface of the substrate P.
- the detection device 60 is provided in the vicinity of the temperature adjustment device 50.
- the transfer device H can carry the substrate P into the temperature adjustment holder 51 of the temperature adjustment device 50 and can carry out the substrate P from the temperature adjustment holder 51.
- the detection device 60 detects the thin film formation state of the substrate P carried into the temperature control device 50 by the transfer device H.
- the detection device 60 includes a projection system 61 that projects the detection light La onto the substrate P held by the temperature control holder 51, and a light receiving system 62 that can receive the detection light La via the substrate P.
- the projection system 61 projects the detection light La on the surface of the substrate P from an oblique direction.
- the light receiving system 62 can receive the detection light La projected onto the surface of the substrate P by the projection system 61 and reflected by the surface.
- the illumination optical system IL illuminates a predetermined illumination area on the mask M with exposure light EL having a uniform illuminance distribution.
- Illumination optical system IL force The exposure light EL emitted is, for example, a mercury lamp force emitted bright line (g-line, h-line, i-line) and far ultraviolet light (D UV light) such as KrF excimer laser light (wavelength 248 nm). ), ArF excimer laser light (wavelength 193 nm), F laser light (wavelength 157 nm), etc.
- Vacuum ultraviolet light (VUV light) is used.
- ArF excimer laser light is used.
- the mask stage 3 is movable in the X axis, Y axis, and ⁇ Z directions while holding the mask M by driving a mask stage driving device 3D including an actuator such as a linear motor.
- the position information of the mask stage 3 (H! /, The mask M) is measured by the laser interferometer 3L.
- the laser interferometer 3L measures the position information of the mask stage 3 using a moving mirror 3K fixed on the mask stage 3.
- the control device 7 drives the mask stage drive device 3D based on the measurement result of the laser interferometer 3L, and controls the position of the mask M held on the mask stage 3.
- the movable mirror 3K may include not only a plane mirror but also a corner cube (retro reflector). Instead of fixing the movable mirror 3K to the mask stage 3, for example, the end surface (side surface) of the mask stage 3 is mirror-finished. A reflective surface formed as described above may be used.
- 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 this embodiment is a reduction system whose projection magnification is 1Z4, 1/5, 1Z8, or the like.
- the projection optical system PL may be any of a reduction system, a unity magnification system, and an enlargement system.
- 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 4 has a substrate holder 4H that holds the substrate P, and is movable on the base member BP while holding the substrate P on the substrate holder 4H.
- the substrate holder 4H is disposed in the recess 4R provided on the substrate stage 4, and the upper surface 4F of the substrate stage 4 other than the recess 4R is almost the same height as the surface of the substrate P held by the substrate holder 4H.
- the surface is flat.
- only a part of the upper surface 4F of the substrate stage 4 for example, a predetermined region surrounding the substrate P, may have the same height as the surface of the substrate P.
- the substrate holder 4H may be formed integrally with a part of the substrate stage 4.
- the substrate holder 4H and the substrate stage 4 are configured separately, and the substrate holder 4H is formed by, for example, vacuum suction. It is fixed to the recess 4R.
- the substrate stage 4 is driven by a substrate stage driving device 4D including an actuator such as a linear motor, and the substrate P is held in the X axis, Y axis, Z axis, 0 ⁇ , ⁇ ⁇ , ⁇ ⁇ It can move in the direction of 6 degrees of freedom.
- the position information of the substrate stage 4 (and substrate ⁇ ) is measured by the laser interferometer 4L.
- the laser interferometer 4L measures the position information of the substrate stage 4 with respect to the X axis, the X axis, and the ⁇ X direction using the moving mirror 4X fixed to the substrate stage 4.
- the force force repelling detection system 30 has a projection system 31 that projects the detection light Lb onto the substrate ⁇ held by the substrate holder 4 ⁇ , and a light receiving system 32 that can receive the detection light Lb via the substrate P. And then.
- the projection system 31 projects the detection light Lb on the surface of the substrate P from an oblique direction.
- the light receiving system 32 can receive the detection light Lb projected onto the surface of the substrate P by the projection system 31 and reflected from the surface. Noh.
- the control device 7 drives the substrate stage driving device 4D based on the measurement result of the laser interferometer 4L and the detection result of the focus / leveling detection system 30, and controls the position of the substrate P held on the substrate stage 4. I do.
- the laser interferometer 4L can measure the position of the substrate stage 4 in the Z-axis direction and the rotation information in the ⁇ X and ⁇ Y directions. For example, refer to JP 2001-510577 (corresponding international standard). (Publication 1999Z28790 pamphlet). Further, instead of fixing the movable mirror 4K to the substrate stage 4, for example, a reflecting surface formed by mirror processing a part (side surface, etc.) of the substrate stage 4 may be used.
- the focus / leveling detection system 30 measures the position information of the substrate P in the Z-axis direction at each of the plurality of measurement points, so that the tilt information (rotation angle) of the substrate P in the ⁇ X and ⁇ Y directions is measured.
- at least a part of the plurality of measurement points is set in the immersion area LR (or projection area AR), but all measurement points are set in the immersion area LR. It may be set outside.
- the laser interferometer 4L can measure the position information of the substrate P in the Z-axis, ⁇ X, and ⁇ Y directions
- the position information in the Z-axis direction can be measured during the exposure operation of the substrate P.
- the position control of the substrate P in the Z axis, ⁇ X and ⁇ Y directions is performed using the measurement result of the laser interferometer 4L at least during the exposure operation. Also good.
- the focus / leveling detection system 30 is provided as an example in a measurement station described later.
- the immersion method is applied in order to substantially shorten the exposure wavelength to improve the resolution and substantially increase the depth of focus.
- It is an immersion exposure system.
- the exposure apparatus EX includes an immersion mechanism 1 that fills the optical path space K of the exposure light EL on the image plane side of the projection optical system PL with the liquid LQ and forms an immersion area LR of the liquid LQ on the substrate P.
- the immersion mechanism 1 is an optical path space K between the substrate P held by the substrate stage 4 and the final optical element FL of the projection optical system PL that is provided at a position facing the substrate P and through which the exposure light EL passes. Is filled with liquid LQ.
- only the final optical element FL closest to the image plane of the projection optical system PL is in contact with the liquid LQ in the optical path space K.
- the liquid immersion mechanism 1 is provided in the vicinity of the optical path space K, and includes a nozzle member 6 having a supply port 12 for supplying the liquid LQ to the optical path space K and a recovery port 22 for recovering the liquid LQ, and a supply pipe 13 And a liquid supply device 11 for supplying the liquid LQ via the supply port 12 of the nozzle member 6, and a liquid recovery device 21 for recovering the liquid LQ via the recovery port 22 of the nozzle member 6 and the recovery pipe 23.
- the nozzle member 6 is an annular member provided so as to surround the final optical element FL of the projection optical system PL.
- the supply port 12 for supplying the liquid LQ and the recovery port 22 for recovering the liquid LQ are formed on the lower surface 6A of the nozzle member 6.
- the lower surface 6A of the nozzle member 60 faces the surface of the substrate P held on the substrate stage 4.
- a flow path connecting the supply port 12 and the supply pipe 13 and a flow path connecting the recovery port 22 and the recovery pipe 23 are formed inside the nozzle member 6.
- the supply port 12 is provided at each of a plurality of predetermined positions on the lower surface 6A of the nozzle member 6 so as to surround the final optical element FL (optical path space K) of the projection optical system PL.
- the recovery port 22 is provided on the lower surface 6A of the nozzle member 6 outside the supply port 12 with respect to the final optical element FL, and is provided in an annular shape so as to surround the final optical element FL and the supply port 12. It has been.
- a titanium mesh member or a ceramic porous member is disposed in the recovery port 22.
- the operations of the liquid supply device 11 and the liquid recovery device 21 are controlled by the control device 7.
- the liquid supply device 11 can deliver clean and temperature-adjusted liquid LQ, and the liquid recovery device 21 including a vacuum system can recover the liquid LQ.
- the structure of the liquid immersion mechanism 1 such as the nozzle member 6 is not limited to the above-described structure.
- European Patent Publication No. 1420298, International Publication No. 2004Z055803, International Publication No. 2004 Z057590, International Publication No. What is described in the 2005Z029559 gazette can be used.
- a force in which the lower surface of the nozzle member 6 is set to substantially the same height (Z position) as the lower end surface (exit surface) of the projection optical system PL, for example, the lower surface 6A of the nozzle member 6 is projected. It may be set closer to the image plane side (substrate side) than the lower end surface of the optical system PL. In this case, a part (lower end surface) of the nozzle member 6 may be slid to the lower side of the projection optical system PL (final optical element FL) so as not to block the exposure light EL.
- the force that provides the supply port 12 on the lower surface 6A of the nozzle member 6, for example, the supply port on the inner surface (inclined surface) of the nozzle member 6 that faces the side surface of the final optical element FL of the projection optical system PL 12 may be provided.
- the exposure apparatus EX projects at least the pattern image of the mask M onto the substrate P.
- the immersion mechanism 1 is used to fill the optical path space K of the exposure light EL with the liquid LQ and form an immersion area LR on the substrate P.
- the exposure apparatus EX irradiates the exposure light EL that has passed through the mask M onto the substrate P via the projection optical system PL and the liquid LQ in the immersion area LR formed on the substrate P. Project the pattern image onto the substrate P.
- the liquid LQ filled in the optical path space K is larger than the projection area AR in a part of the area on the substrate P including the projection area AR of the projection optical system PL. And smaller than the substrate P!
- the control device 7 controls the liquid immersion mechanism 1 to perform the liquid supply operation by the liquid supply device 11 and the liquid recovery operation by the liquid collection device 21 in parallel, thereby filling the optical path space K with the liquid LQ. Then, the liquid LQ immersion region LR is locally formed in a partial region on the substrate P.
- pure water is used as the liquid LQ.
- Pure water is not only ArF excimer laser light, but also far ultraviolet light (DUV light) such as emission lines (g-line, h-line, i-line) emitted from mercury lamp force and KrF excimer laser light (wavelength 248nm). Can also be transmitted.
- DUV light far ultraviolet light
- emission lines g-line, h-line, i-line
- KrF excimer laser light wavelength 248nm
- FIG. 3 is a view showing an example of a substrate P on which a thin film is formed by a coating device of a coater / developer device CZD.
- the substrate P has a base material W such as a semiconductor wafer, a first lHRg formed on the base material W, and a second film Tc formed on the first HRg.
- the lHRg is a film that also has a photosensitive material (photoresist) force.
- the second film Tc is a film called a top coat film.
- the liquid LQ force also has a function of protecting at least one of the first lHRg and the substrate W, and is liquid repellent with respect to the liquid LQ. (Water repellency).
- the second film Tc which is a liquid repellent film
- the first lHRg is formed by applying a photosensitive material (photoresist) on the substrate W by, for example, spin coating.
- the second film Tc is formed by applying a material for forming a topcoat film on the substrate P. Since the liquid immersion region LR of the liquid LQ is formed on the second film Tc of the substrate P, the second film Tc of the substrate P forms a liquid contact surface in contact with the liquid LQ of the liquid immersion region LR.
- the contact angle of the liquid LQ when the liquid LQ is placed on the second film Tc is 90 ° or more.
- a forming material (liquid repellent material) for forming the second film Tc "TSP-3AJ" manufactured by Tokyo Ohka Kogyo Co., Ltd. is used.
- FIG. 4 is a diagram showing the detection device 60.
- the detection device 60 includes a projection system 61 that projects the detection light La on the substrate P, and a light receiving system 62 that can receive the detection light La via the substrate P, and the second film Tc on the substrate P.
- the formation state of is detected optically.
- the second film Tc is formed by applying a predetermined material for forming the top coat film on the substrate P, and the detection device 60 applies the second film Tc.
- Detect state or second film Tc defect means not only the state of thin film formed on the substrate P (application state) but also the state of the edge of the substrate P described later is defective. It is a concept that includes.
- the detection device 60 is provided on the transport path of the transport device H, and detects the formation state of the second film Tc before the liquid immersion region LR is formed on the substrate P. That is, the detection device 60 detects the formation state of the second film Tc without using the liquid LQ.
- the control device 7 detects on the substrate P while relatively moving the detection light La and the substrate P. Irradiate light La.
- the temperature control holder 51 that holds the substrate P is provided so as to be movable in the XY direction, and the control device 7 projects the temperature control holder 51 that holds the substrate P while moving it in the XY direction.
- the substrate P is irradiated with the detection light La from the system 61. As a result, the detection light La is projected almost over the entire surface of the substrate P.
- the detection device 60 may be powered on the substrate P held by the temperature control holder 51, and the surface of the substrate P may be irradiated with the detection light La, or the temperature control holder 51 holding the substrate P may be detected. Both devices 60 may be powered. Also, in the figure, the detection light La projected from the projection system 61 is shown to be one, but the projection system 61 projects a plurality of detection lights La simultaneously onto the substrate P. Is also possible. In this case, the light receiving system 62 is provided with a light receiving surface corresponding to the plurality of detection lights La.
- the detection device 60 detects the formation state of the second film Tc of the substrate P carried into the temperature adjustment device 50.
- the detection device 60 is held by the temperature adjustment holder 51 of the temperature adjustment device 50, and detects the formation state of the second film Tc of the substrate P that has been subjected to the temperature adjustment processing. That is, the detection process of the formation state of the second film Tc of the substrate P by the detection device 60 and the temperature adjustment process of the substrate P by the temperature control device 50 are performed in parallel.
- a method for exposing the substrate P using the exposure apparatus EX having the above-described configuration will be described with reference to the flowchart of FIG.
- the first film Rg and the second film Tc are formed on the substrate P by the coating apparatus of the coater / developer apparatus CZD (SAO).
- the substrate P on which the first film Rg and the second film Tc are formed in this way is carried into the exposure apparatus EX from the coating apparatus in order to be exposed through the liquid.
- the substrate P is subjected to predetermined processing by various processing apparatuses other than the coater / developer apparatus CZD.
- the control device 7 uses the transfer device H to transfer the substrate P to the temperature adjustment device 50 (step S Al). That is, the transfer device H carries the substrate P into the temperature adjustment device 50 before transferring the substrate P to the substrate stage 4.
- the substrate P is held by the temperature control holder 51 of the temperature control device 50.
- the temperature control device 50 adjusts the temperature of the substrate P before being transported to the substrate stage 4, and in particular adjusts the temperature of the substrate holder 4H of the substrate stage 4 and the temperature of the liquid LQ forming the Z or immersion region LR. Adjust the temperature of board P accordingly.
- the temperature adjustment device 50 adjusts the temperature of the substrate P so as to match the temperature of the substrate holder 4H (or liquid LQ).
- the control device 7 detects the formation state of the second film Tc of the substrate P carried into the temperature adjustment device 50 and held by the temperature adjustment holder 51 using the detection device 60 (step SA2).
- the detection device 60 irradiates the surface of the substrate P with detection light La from the projection system 61.
- the control device 7 controls the detection device 60 to irradiate the detection light La on the substrate P while relatively moving the detection light La and the substrate P. Thereby, the formation state of the second film Tc in almost the entire surface of the substrate P can be detected.
- the detection light La reflected by the surface of the substrate P is received by the light receiving system 62.
- the light reception result of the light receiving system 62 is output to the control device 7.
- the storage device 8 stores in advance the relationship between the formation state of the second film Tc and the light reception state of the light receiving system 62. Based on the storage information stored in the storage device 8 and the light reception result of the light receiving system 62, the control device 7 determines whether the formation state of the second film Tc is a desired state (step SA3). ).
- the detection light La irradiated on the substrate P is at a predetermined position on the light receiving surface of the light receiving system 62. It reaches with a predetermined amount of light.
- the amount of the detection light La reaching the light receiving system 62 changes (decreases) compared to the desired state, or the position of the detection light La reaching the light receiving surface of the light receiving system 62 is changed. The situation where the detection light La does not reach the light receiving system 62 may occur.
- the second film Tc is defective” or “the defect exists in the second film Tc” means that the second film Tc is formed (coated) on the substrate P, or is partially or partially applied. It includes a state in which a region exists or is formed with a desired thickness (film thickness) and a region exists.
- the light receiving state in the light receiving system 62 when the detection light La is projected onto the substrate P (second film Tc) in a desired state can be obtained in advance by, for example, experiment and Z or simulation. Therefore, the control device 7 stores the information on the light receiving state in the light receiving system 62 when the detection light La is projected onto the substrate P (second film Tc) in the desired state in advance. Based on the stored information stored in the apparatus 8 and the light reception result of the light receiving system 62, it is determined whether or not the second film Tc is formed in a desired state, particularly in immersion exposure. be able to.
- the control device 7 controls the operation of the transport device H based on the detection result of the light reception result of the light receiving system 62 (detection result of the detection device 60). Specifically, when it is determined in step SA3 that the formation state of the second film Tc is the desired state based on the detection result of the light reception result of the light receiving system 62 (the detection result of the detection device 60), the control device In step 7, after the temperature adjustment processing of the substrate P by the temperature control device 50 is completed, the substrate P is transferred to the substrate stage 4 of the exposure apparatus main body S using the transfer device H (step SA4). The substrate P carried into the substrate stage 4 is held by the substrate stage 4 (substrate holder 4H).
- the control device 7 performs predetermined processing such as alignment processing on the substrate P held on the substrate stage 4, and forms the liquid immersion region LR of the liquid LQ on the substrate P using the liquid immersion mechanism 1. To do. Then, the control device 7 starts immersion exposure of the substrate P (step SA5).
- the exposure apparatus EX of the present embodiment is a scanning exposure apparatus that exposes the pattern image formed on the mask M onto the substrate P while moving the mask M and the substrate P in the scanning direction synchronously (so-called scananine dusto). It is.
- the control device 7 uses the laser interferometers 3L and 4L to measure the position information of the mask M (mask stage 3) and the substrate P (substrate stage 4), and moves the mask M and the substrate P against the exposure light EL. While moving, move multiple shot areas set on the substrate P to the liquid L Sequential exposure through Q. After the exposure processing of the substrate P is completed, the control device 7 moves the liquid immersion area LR away from the substrate P and unloads (unloads) the substrate P from the substrate stage 4 using the transfer device H. ) And then transported to the coater / developers device CZD (developers device).
- CZD developer device
- step SA6 the control device 7 Using the apparatus H, the substrate P is transferred to a predetermined position other than the substrate stage 4 (step SA6).
- the control device 7 determines that the second film Tc is formed in a defective state
- the control device 7 uses the transfer device H to transfer the substrate P from the temperature control device 50 to the coater / developer device CZD.
- the control device 7 uses the transfer device H to retract the substrate P to a predetermined retraction position.
- the substrate P that is judged to be defective in the second film Tc can be discarded. If it is necessary, the film can be re-formed and reused.
- the contact state (contact angle) with is optimized. That is, in the immersion exposure, a thin film (second film Tc) on the substrate P is formed according to the liquid LQ.
- the liquid LQ cannot flow well between the projection optical system PL and the substrate P, and the liquid LQ flows out, or the liquid LQ through the recovery port 22 Inconveniences such as liquid LQ remaining on the substrate P without being able to be recovered well, or the liquid immersion area LR is not well formed and a gas part is generated in the optical path space K of the exposure light EL. May occur. Therefore, if the substrate P in which the formation state of the second film Tc is defective is carried into the substrate stage 4 and immersion exposure is performed, the liquid LQ flows out to peripheral devices near the substrate stage 4. Inconveniences such as damage will occur.
- a situation may arise in which the operation of the exposure apparatus must be stopped due to the spilled liquid adhering to or entering the peripheral device.
- a situation may occur when a photoresist film or top coat film is not formed on the substrate due to a defect in the coater / developed head apparatus CZD. If a substrate on which such a film is not formed is transferred to the substrate stage, the liquid supplied onto the substrate cannot stay on the substrate and may flow out of the substrate. In other words, if a predetermined film is formed on the substrate, it will cause extremely great damage to immersion exposure.
- the exposure light EL that has passed through the liquid immersion region LR in a defective state is irradiated onto the substrate P, or a watermark is formed on the substrate P due to the liquid LQ remaining on the substrate P.
- the manufactured device may be defective. Manufacturing such a defective device will lead to a decrease in device productivity.
- This problem is also unique to immersion light.
- the substrate Appropriate measures can be taken without transferring P to the substrate stage 4, for example, transferring the substrate P to the coater / developer device CZD. Further, since the substrate P is not transferred to the substrate stage 4, the liquid immersion area LR is not formed on the substrate P. Therefore, it is possible to prevent the above-described inconveniences and suppress a decrease in device productivity.
- the detection device 60 for detecting the formation state of the thin film (second film Tc) on the substrate P since the detection device 60 for detecting the formation state of the thin film (second film Tc) on the substrate P is provided, the detection result of the detection device 60 is used to improve the productivity of the device. Appropriate measures can be taken to suppress the decrease and prevent the exposure apparatus from being broken.
- the detection device 60 detects the formation state of the second film Tc of the substrate P carried into the temperature adjustment device 50, and the second film of the substrate P by the detection device 60 is detected.
- the detection process of the Tc formation state and the temperature adjustment process of the substrate P by the temperature control device 50 are performed in parallel. Therefore, processing efficiency can be improved. Note that the detection process and the temperature adjustment process may not be performed at the same time. The detection process may be performed after the temperature adjustment process.
- the detection device 60 is provided in the vicinity of the temperature adjustment device 50, but can be provided at an arbitrary position on the conveyance path of the conveyance device H.
- the substrate P before being loaded on the substrate stage 4 is roughly positioned with respect to the substrate stage 4.
- the detection device 60 can be provided in the vicinity of the bri alignment device.
- the detection device 60 can detect the formation state of the second film Tc of the substrate P carried into the bri alignment device.
- the control device 7 can perform the detection processing of the formation state of the second film Tc of the substrate P by the detection device 60 and the positioning processing of the substrate P by the bri alignment device in parallel.
- a detection device 60 is provided in the vicinity of the temperature control device 50 and other processing devices other than Z or the bri alignment device, and the formation state of the second film Tc of the substrate P carried into the processing device is detected. May be.
- the detection device 60 may detect the formation state of the second film Tc of the substrate P held by the transfer device H. Further, the detection device 60 may be used in combination with another processing device (such as the temperature control device 50 or the bri alignment device).
- a focus / leveling detection system 30 that acquires surface information of the substrate P via the liquid LQ in the immersion region LR is arranged! However, it is possible to obtain this information on the surface of the substrate P without using the liquid LQ at the measurement station remote from the projection optical system PL.
- a characteristic part of this embodiment is that the formation state of the thin film on the substrate P held by the substrate holder 4H is detected.
- the same or similar components as those in the above-described embodiment are denoted by the same reference numerals, and the description thereof is simplified or omitted.
- the substrate P on which the first HRg and the second film Tc are formed by the coating apparatus of the coater / developers apparatus CZD is carried into the exposure apparatus EX for exposure via the liquid.
- the substrate P is subjected to predetermined processing by various processing devices including the temperature control device 50 before being transferred to the substrate stage 4 of the exposure apparatus main body S.
- the control device 7 uses the transfer device H to transfer the substrate P to the substrate stage 4 (substrate holder 4H) (step SB1).
- the control device 7 detects the formation state of the second film Tc on the substrate P, which is carried into the substrate stage 4 and held by the substrate holder 4H, using the focus' leveling detection system 30. Do (Step SB2). As shown in FIG. 7, before the liquid immersion region LR is formed on the substrate P, the control device 7 detects the formation state of the second film Tc using the focus / leveling detection system 30.
- the focus / leveling detection system 30 has substantially the same configuration as the detection device 60, and can optically detect the formation state of the second film Tc.
- the detection light Lb irradiated to the substrate P (second film Tc) by the projection system 31 is predetermined at a predetermined position on the light receiving surface of the light receiving system 32. Reach with a light quantity of
- the control device 7 moves the detection light Lb projected from the projection system 31 and the substrate P on the substrate stage 4 while relatively moving them. Irradiate P with detection light Lb.
- the storage device 8 stores in advance the relationship between the formation state of the second film Tc and the light reception state of the light receiving system 32.
- the control device 7 determines whether or not the formation state of the second film Tc is a desired state based on the storage information stored in the storage device 8 and the light reception result of the light receiving system 32 (step SB3). .
- step SB3 If it is determined in step SB3 that the formation state of the second film Tc is a desired state based on the light reception result of the light reception system 32 (the detection result of the focus / leveling detection system 30), the control device 7 performs predetermined processing such as alignment processing on the substrate P held on the substrate holder 4H, and uses the liquid immersion mechanism 1 to apply a liquid LQ on the substrate P held on the substrate holder 4H.
- the liquid immersion area LR is formed (step SB4). Then, the control device 7 performs immersion exposure of the substrate P (Step SB5).
- the control device 7 adjusts the position of the substrate P on the basis of the surface position information of the substrate P detected by the focus' leveling detection system 30, and the substrate P Expose P.
- the focus / leveling detection system 30 of the present embodiment projects the detection light Lb outside the liquid immersion region LR on the surface of the substrate P, and the surface position of the substrate P without passing through the liquid LQ. Detect information.
- the focus / leveling detection system 30 may detect the surface position information of the substrate P via the liquid LQ.
- the control device 7 uses the transfer device H to unload the substrate P from the substrate stage 4 force, and coater 'developer device CZD (developer device) Transport to.
- step SB3 when it is determined in step SB3 that the formation state of the second film Tc is a defective state based on the light reception result of the light reception system 32 (the detection result of the focus' leveling detection system 30), the control device 7 Using the transfer device H, the substrate P is also unloaded from the substrate stage 4 force and transferred to a predetermined position (step SB6).
- the control device 7 uses the transport device H to transport the substrate stage 4 force to the coater / developer device CZD.
- the control device 7 uses the transfer device H to retract the substrate P to a predetermined retraction position.
- the formation state of the second film Tc is detected without the liquid LQ before the immersion region LR is formed on the substrate P.
- the focus / leveling detection system 30 may be used to detect the formation state of the second film Tc via the liquid LQ. From the viewpoint of preventing the adverse effect on the exposure apparatus due to the outflow of the liquid LQ from the substrate, it is desirable to detect the formation state of the second film Tc before carrying the substrate into the substrate stage 4.
- the detection device 60 may not be provided, and after the thin film formation state on the substrate P is checked by the detection device 60, the detection is performed on the substrate P carried into the substrate stage 4. The formation state of the thin film may be rechecked.
- the force for detecting the formation state of the thin film based on the reflected light of the detection light applied to the surface of the substrate P is disclosed in, for example, Japanese Patent Application Laid-Open No. 2002-141274.
- the surface of the substrate P where the thin film is formed is irradiated with light to obtain the spectrum of the reflected light, and the film thickness (film thickness distribution) is calculated based on this spectrum.
- a measurable film thickness measuring device can also be used.
- the control device 7 can determine whether or not the thin film on the substrate P is in a desired state.
- the state of the liquid sprayed on the surface of the substrate P is determined by CCD or the like. Imaging device You may make it observe by.
- the state of the thin film formed on the substrate P is different from the desired state and the defective state because the state of the liquid sprayed on the surface of the substrate P (liquid film formation state, etc.) is different.
- the control device 7 performs image processing on the imaging result of the imaging device, and can detect the formation state of the thin film on the substrate P based on the processing result.
- the surface information (surface position information) of the substrate P can be acquired without using the liquid LQ at the measurement station away from the projection optical system PL, and the surface information of the substrate P can be acquired.
- a focus' leveling detection system can be provided at the measuring station.
- the formation state of the thin film on the substrate P can be detected by using a focus leveling detection system provided in the measurement station.
- a case where the formation state of a thin film on the substrate P is detected using a focus' leveling detection system provided in the measurement station will be described as an example.
- components that are the same as or equivalent to those in the above-described embodiment are given the same reference numerals, and descriptions thereof are simplified or omitted.
- the exposure apparatus EX of the present embodiment includes a mark detection system 40 that detects the alignment mark on the substrate P at the measurement station.
- the mark detection system 40 of this embodiment can detect the state of the edge of the substrate P.
- the mark detection system 40 includes alignment marks on the substrate P held on the substrate stage 4 before the liquid LQ immersion region LR is formed on at least a part of the substrate P. Detect edge state of board P
- FIG. 8 is a schematic block diagram that shows an exposure apparatus EX according to the third embodiment.
- the exposure apparatus EX includes an exposure station ST1 that exposes the substrate P and a measurement station ST2 that is provided at a position away from the projection optical system PL and performs predetermined measurement and replacement of the substrate P.
- the exposure station ST1 is provided with a projection optical system PL, a nozzle member 6, and the like
- the measurement station ST2 is provided with a focus / leveling detection system 30, a mark detection system 40, and the like.
- the substrate stage 4 includes the first area SP1 that can be irradiated with the exposure light EL from the projection optical system PL of the exposure station ST1, and the measurement station ST2.
- the substrate P can be held and moved within a predetermined region on the base member BP including the second region SP2 to which the detection lights Lb and Lc from the extraction systems 30 and 40 can be irradiated.
- the first area SP1 includes a position where the exposure light EL under the projection optical system PL can be irradiated
- the second area SP2 is a position where the detection lights Lb and Lc under the detection systems 30 and 40 can be irradiated. including.
- the first area SP1 and the second area SP2 are different areas. A part of the first region SP1 and the second region SP2 may overlap.
- the substrate stage 4 can hold the substrate P at a position where the exposure light EL of the exposure station ST1 can be irradiated, and can hold the substrate P at a position where the detection light Lb and Lc of the measurement station ST2 can be irradiated.
- FIG. 8 shows a state in which the substrate stage 4 is arranged in the measurement station ST2.
- the exposure station ST1 and measurement station ST2 may have different actuators (such as a linear motor) and Z or laser interferometer for driving the substrate stage 4.
- a transfer device H for exchanging the substrate P is provided in the vicinity of the measurement station ST2.
- the control device 7 uses the transfer device H to unload (unload) the exposed substrate P from the substrate stage 4 moved to the substrate replacement position (loading position) RP of the measurement station ST2, and perform exposure processing.
- the work (board replacement work) of loading (loading) the board P to be loaded onto the board stage 4 can be executed.
- loading and unloading of the substrate P are performed at the same position (substrate replacement position) RP, but loading and unloading may be performed at different positions.
- the focus / leveling detection system 30 includes a projection system 31 that projects the detection light Lb on the substrate P held by the substrate stage 4, and a detection light that passes through the substrate P. And a light receiving system 32 capable of receiving Lb.
- the projection system 31 projects the detection light Lb from an oblique direction onto the surface of the substrate P held by the substrate stage 4 disposed in the measurement station ST2.
- the light receiving system 32 can receive the detection light Lb projected onto the surface of the substrate P by the projection system 31 and reflected from the surface.
- the focus / leveling detection system 30 is a measurement station ST2 separated from the projection optical system PL, and the surface position information of the surface of the substrate P held on the substrate stage 4 (Z-axis, ⁇ X, and ⁇ Y directions) Surface position information) is detected.
- the mark detection system 40 is an optical device for acquiring alignment information of the substrate P held on the substrate stage 4 (position information in the X, ⁇ , and ⁇ ⁇ directions of a plurality of shot regions on the substrate P). It is an alignment system that can detect alignment marks formed on the substrate P. Further, the mark detection system 40 can detect the state of the edge of the substrate P. The mark detection system 40 acquires an irradiation device that irradiates the object with detection light Lc different from the exposure light EL, and an optical image (image) of the object illuminated by the detection light Lc from the irradiation device force. Imaging device. The mark detection system irradiates the substrate P with the detection light Lc and acquires an image of the mark on the substrate P. Further, the mark detection system 40 can illuminate the edge of the substrate P with the detection light Lc, and can acquire an image of the edge of the substrate P illuminated with the detection light Lc. The detection result of the mark detection system 40 is output to the control device 7.
- the mark detection system 40 of the present embodiment uses a photosensitive material on the substrate P as disclosed in, for example, JP-A-4-65603 (corresponding US Pat. No. 5,493,403). Detection light Lc with a wavelength different from that of the exposure light EL that is not exposed to light irradiates the target mark (alignment mark, etc., formed on the substrate P), and is detected on the light-receiving surface by the reflected light of the target mark force An image of the target mark and an index (an index mark on the index plate provided in the mark detection system 40) are imaged using an imaging device (CCD, etc.), and the image signals are processed.
- This is a FIA (Field Image Alignment) type alignment system that measures the position of a mark.
- the index of the mark detection system 40 defines the detection reference position of the mark detection system 40 in the coordinate system defined by the laser interferometer 4L.
- the mark detection system 40 detects the positional relationship (positional deviation) between the image of the detection target mark and the index, thereby determining the positional relationship between the detection target mark and the detection reference position in the coordinate system defined by the mark detection system 40. (Position displacement) can be detected.
- the controller 7 loads the substrate P to be exposed next on the substrate stage 4 at the measurement station ST2, and then exists in the measurement station ST2 in the same manner as in the above embodiment.
- the focus / leveling detection system 30 is used to detect the formation state of the thin film on the substrate P held by the substrate stage 4 to be performed.
- the control device 7 detects the state of the edge of the substrate P held on the substrate stage 4 existing in the measurement station ST2 by using the mark detection system 40.
- the control device 7 controls the position of the substrate P held by the substrate stage 4 existing in the measurement station ST2.
- the position information is acquired without using the liquid LQ by using the focus leveling detection system 30 and the mark detection system 40.
- the position information of the substrate P is the surface position information of the substrate P with respect to a predetermined reference surface such as the image plane of the projection optical system PL (position information in the Z, 0 X, and 0 Y directions), and the predetermined reference.
- substrate ⁇ alignment information position information of X, ⁇ , 0 ⁇ direction of multiple shot areas on substrate
- the state where the optical path space ⁇ is not filled with the liquid LQ is appropriately referred to as a dry state, and the state where the optical path space ⁇ is filled with the liquid LQ is appropriately referred to as a wet state.
- an image surface formed through the projection optical system PL and the liquid LQ is appropriately referred to as an image surface formed in a wet state.
- the control device 7 starts replacing the substrate P and a predetermined measurement process at the measurement station ST2. For example, the control device 7 places the substrate stage 4 at the substrate exchange position RP of the measurement station ST2, and loads the substrate P to be exposed on the substrate stage 4 using the transfer device H. At measurement station ST2, substrate stage 4 holds substrate P (step SC1).
- the controller 7 After holding the substrate P on the substrate stage 4, the controller 7 focuses the formation state of the second film Tc on the substrate P in the state held on the substrate stage 4 in the measurement station ST2. 'Detect using leveling detection system 30 (step SC2). As shown in FIG. 8, the measurement station ST2 is provided at a position where the upper surface of the substrate stage 4 does not face the projection optical system PL (nozzle member 6), and the control device 7 is at least partially on the substrate P. Before the immersion region LR is formed, the formation state of the second film Tc using the focus / leveling detection system 30 is detected.
- the substrate P (second film Tc) is projected by the projection system 31 of the focus / leveling detection system 30.
- the detection light Lb irradiated on the light reaches a predetermined position on the light receiving surface of the light receiving system 32 with a predetermined amount of light.
- the amount of the detection light Lb that reaches the light receiving system 32 changes (decreases) or is lower than that in the desired state. A situation may occur in which the position of the detection light Lb that reaches the light receiving surface of the light receiving system 32 changes.
- the control device 7 moves the detection light Lb projected from the projection system 31 and the substrate P on the substrate stage 4 while relatively moving them. Irradiate detection light Lb on plate P.
- the storage device 8 stores in advance the relationship between the formation state of the second film Tc and the light reception state of the light receiving system 32. Based on the storage information stored in the storage device 8 and the light reception result of the light receiving system 32, the control device 7 determines whether the formation state of the second film Tc is a desired state (step SC3). ).
- step SC3 when it is determined that the formation state of the second film Tc is a defective state based on the detection result of the focus' leveling detection system 30, the control device 7 uses the transfer device H to Substrate P is also unloaded from the substrate stage 4 and is transferred to the specified position (Step SC10). For example, if the control device 7 determines that the formation state of the second film Tc is defective, the substrate P is transferred to the coater 'developer device CZD from the substrate stage 4 by using the transfer device H. To do. Alternatively, the control device 7 retracts the substrate P to a predetermined retracted position using the transport device H.
- step SC3 if it is determined that the formation state of the second film Tc is the desired state based on the light reception result of the light reception system 32 (the detection result of the focus / leveling detection system 30), the control device 7 detects the edge state of the substrate P held by the substrate stage 4 using the mark detection system 40 (step SC4).
- the mark detection system 40 detects the state of the edge of the substrate P held on the substrate stage 4 in the second region SP2 of the measurement station ST2 after the substrate P is held on the substrate stage 4.
- FIG. 10 is a schematic diagram showing a state in which the mark detection system 40 detects the state of the edge of the substrate P.
- the control device 7 moves the substrate stage 4 in the XY directions at the measurement station ST2, and places the edge of the substrate P held by the substrate stage 4 in the detection area of the mark detection system 40.
- the mark detection system 40 includes an imaging device, and acquires an optical image (image) of the edge of the substrate P arranged in the detection region of the mark detection system 40.
- the control device 7 powers the substrate stage 4 to perform detection by the mark detection system 40 while moving the edge of the substrate P relative to the detection region of the mark detection system 40.
- the control device 7 detects the substrate P. The entire edge is detected by the mark detection system 40.
- the detection result (imaging result) of the mark detection system 40 is output to the control device 7. Based on the detection result of the mark detection system 40, the control device 7 determines whether or not the edge state of the substrate P is in a desired state (step SC5).
- the state of the edge of the substrate P includes the formation state of the thin film at the edge of the substrate P.
- the state of the edge of the substrate P includes the formation state of at least one of the first film Rg and the second film Tc on the edge of the substrate P.
- the first film Rg is formed by applying a photosensitive material (photoresist) on the substrate W by, for example, a spin coating method, and the second film Tc is also formed on the substrate P as a top coat.
- the mark detection system 40 detects the application state (the presence / absence of a film, film peeling, film thickness, etc.) of at least one of the first HRg and the second film Tc at the edge of the substrate P.
- the state of the edge of the substrate P includes the presence / absence state (attachment state) of foreign matter on the edge of the substrate P.
- the mark detection system 40 also detects whether a foreign object is present on the edge of the substrate P.
- the storage device 8 stores image information of the ideal state of the edge of the substrate P in advance.
- the control device 7 performs, for example, image processing on the result of detecting (imaging) the edge of the substrate P using the mark detection system 40, the image processing result, and the edge of the substrate P stored in the storage device 8.
- the image information in the ideal state is compared. Based on the comparison result, the control device 7 determines whether the edge state of the substrate P detected (imaged) by the mark detection system 40 is a desired state.
- step SC5 If it is determined in step SC5 that the edge state of the substrate P is in a defective state based on the detection result of the mark detection system 40, the control device 7 uses the transfer device H to The substrate P immediately before the start of exposure is unloaded from the substrate stage 4 and is transported to a predetermined position (step SC10). For example, if the control device 7 determines that the edge state of the substrate P is defective, the control device 7 uses the transfer device H to transfer the substrate stage 4 force to the coater / developer device CZD. Alternatively, the control device 7 uses the transfer device H to retract the substrate P to a predetermined retraction position.
- the state of the edge of the substrate P is in a defective state means that at least one of the first film Rg and the second film Tc is not satisfactorily applied to the edge of the substrate P, and Includes at least one of the states where foreign matter is present at the edge.
- step SC5 based on the detection result of the mark detection system 40, the edge of the substrate P When it is determined that this state is the desired state, the control device 7 starts an operation of acquiring position information of the substrate P held on the substrate stage 4.
- the control device 7 measures the position information in the X-axis direction and the Y-axis direction of the substrate stage 4 holding the substrate P by the laser interferometer 4L at the measurement station ST2, and detects the mark detection system 40. Is used to detect a plurality of alignment marks corresponding to a plurality of shot areas on the substrate P without passing through the liquid (step SC6). As a result, the control device 7 can obtain position information regarding the X-axis direction and the Y-axis direction of each alignment mark in the coordinate system defined by the laser interferometer 4L. Based on the position information of the control device 7, coordinate position information (array information) of a plurality of shot areas on the substrate P can be obtained.
- the positional relationship between the detection region of the mark detection system 40 and the projection position of the pattern image formed via the projection optical system PL and the liquid LQ is measured in advance and stored in the storage device 8. Therefore, when each shot area is exposed, each shot area on the substrate P and the pattern image can be sequentially aligned in a desired state based on the coordinate position information of each shot area.
- control device 7 detects the surface position information of the surface of the substrate P held by the substrate stage 4 without using the liquid LQ at the measurement station ST2 by using the focus / leveling detection system 30. (Step SC7)
- the control device 7 controls the movement of the substrate stage 4 and moves the substrate stage 4 holding the substrate P in the XY plane at a plurality of detection points on the surface of the substrate P. Is detected using the focus' leveling detection system 30.
- the control device 7 moves the substrate stage 4 while monitoring the output of the laser interferometer 4L, and detects the surface position information at multiple points within the surface of the substrate P surface (within the XY plane) by focusing and leveling detection. Detect using system 30.
- the control device 7 can obtain surface position information at a plurality of detection points on the surface of the substrate P in the coordinate system.
- the detection result of the focus / leveling detection system 30 is stored in the storage device 8 in correspondence with the position of the substrate P in the XY plane. Since the positional relationship between the surface position information detected using the focus / leveling detection system 30 and the image plane formed via the projection optical system PL and the liquid LQ is obtained in advance, each shot area is Focus leveling detection obtained in step SC7 when performing exposure Based on the surface position information detected using the system 30, the image plane formed through the projection optical system PL and the liquid LQ and the surface of the substrate P can be aligned in a desired state.
- the control device 7 moves the substrate stage 4 to the exposure light EL. Move to the first area SP1 of the exposure station ST1 that can be irradiated.
- the control device 7 moves the substrate stage 4 (substrate P) disposed in the first region SP1 of the exposure station ST1. ) Above, the immersion area LR is formed using the immersion mechanism 1 (step SC8). Then, the control device 7 controls the substrate stage 4 based on the surface position information of the surface of the substrate P obtained in step SC7, and adjusts the position of the surface (exposure surface) of the substrate P, while adjusting the position of step SC6. Based on the coordinate position information (array information) of each shot area on the substrate P obtained in step 1, the positions of the substrate P in the X-axis direction, Y-axis direction, and ⁇ Z direction are controlled.
- Step SC9 Sequentially expose multiple shot areas on the substrate P (Step SC9) o
- the substrate stage 4 can hold and control the substrate P at the position where the exposure light EL can be irradiated in the first region SP1 of the exposure station ST1.
- the apparatus 7 forms an immersion area LR using the immersion mechanism 1 on the substrate P held by the substrate stage 4 arranged in the first area SP1 of the exposure station ST1, and in the first area SP1 Projection light onto substrate P held by substrate stage 4
- the substrate P is exposed by irradiating the exposure light EL through the academic system PL and the liquid LQ.
- FIG. 11 shows the substrate stage 4 placed in the exposure station ST1.
- control device 7 moves the substrate stage 4 of the exposure station ST1 to the measurement station ST2.
- the control device 7 unloads the substrate P, which is held on the substrate stage 4 moved to the measurement station ST2 and subjected to the exposure processing, using the transfer device H.
- the formation state of the thin film (second film Tc) on the substrate P is detected. Therefore, if the thin film formation state is defective, the substrate P is removed from the exposure station. Appropriate measures can be taken, for example, transporting the substrate P to the coater / developer device CZ D without placing it in the first region SP 1 of ST1. Further, since the substrate P is not arranged on the exposure station ST1, the liquid immersion region LR is not formed on the substrate P. Therefore, similarly to the above-described embodiment, it is possible to suppress the occurrence of inconvenience such as the outflow of the liquid LQ and to suppress the decrease in device productivity.
- the state of the edge of the substrate P is detected before the immersion region LR of the liquid LQ is formed on at least a part of the substrate P.
- a part of the peeled film becomes a foreign matter and becomes on the substrate (on the substrate). May adhere to the shot area) or enter the liquid LQ during immersion exposure.
- the immersion region LR is formed on the edge of the substrate p as shown in the schematic diagram of FIG. 12 while leaving the edge of the substrate P in a defective state, during the immersion exposure.
- a part of the film on the edge of the substrate P may be peeled off and mixed into the liquid LQ.
- the foreign matter adheres to the shot region on the substrate or the liquid in the immersion region LR.
- Foreign matter may be mixed in the LQ. If the substrate is exposed in the presence of foreign matter, defects such as defects may occur in the pattern formed on the substrate, and the manufactured device may be defective. If such a defective device is manufactured, the productivity of the device is reduced.
- the substrate P when the substrate P is subjected to immersion exposure in the presence of foreign matter, the foreign matter in the liquid LQ comes into contact with the liquid LQ in the liquid immersion region LR, such as the nozzle member 6, part of the substrate stage 4, Alternatively, it may adhere to the final optical element FL and affect the subsequent exposure.
- the application state of at least one of the first film Rg and the second film Tc is defective. For example, while leaving that the application state of the second film Tc, which is a liquid-repellent film, is poor at the edge of the substrate P, as shown in the schematic diagram of FIG.
- the edge of the second film Tc having a poor coating state is peeled off, or the first film Rg under the Tc of the second film is liquid.
- the 1st HRg may peel off when contacting with the body LQ, or the constituent materials (PAG, tentier, etc.) of the 1st HRg may elute and the liquid contact surface of the final optical element FL may become cloudy. is there.
- the liquid LQ may enter the gap between the upper surface of the substrate P and the upper surface 4F of the substrate stage 4, and the liquid LQ may further enter the back surface side of the substrate P.
- the substrate holder 4H may be wetted and the substrate P cannot be held smoothly, or the substrate P may not be smoothly unloaded from the substrate holder 4H. is there. Also, the transfer device H that contacts the back surface of the substrate P may get wet.
- the operation of the exposure apparatus has to be stopped, and a situation arises, which leads to not only a reduction in throughput but also a failure of the exposure apparatus itself. That is, the problem caused by such a liquid leak is a problem peculiar to the immersion exposure apparatus.
- the edge state of the substrate P is detected by detecting the state of the edge of the substrate P before the liquid LQ immersion region LR is formed on at least a part of the substrate P. If the substrate P is defective, an appropriate measure can be taken without placing the substrate P in the first region SP1 of the exposure station ST1, for example, transporting the substrate P to the coater / developers apparatus CZD. Further, since the substrate P is not arranged in the exposure station ST1, the liquid immersion region LR is not formed on the substrate P. Therefore, it is possible to suppress the occurrence of the above-described inconveniences and suppress a decrease in device productivity.
- the fourth embodiment is a modification of the above-described third embodiment. Characteristic portions different from the third embodiment of the exposure apparatus EX of the fourth embodiment are different from each other in a predetermined region on the base member BP. It has a plurality of board stages that can be moved independently.
- the same or equivalent components as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof is simplified or omitted.
- FIG. 13 is a schematic block diagram that shows an exposure apparatus EX according to the fourth embodiment.
- the exposure apparatus EX of the present embodiment includes, for example, JP-A-10-163099 and JP-A-10-214783 (corresponding U.S. Pat. Nos. 6,341,007,6,400,441,6,549,269, 590,634), Special Table 2000-505958 (corresponding US Patent 5,969,441), Special Table 2000-51170 Provided with a plurality of substrate stages that can move while holding the substrate as disclosed in Japanese Patent No. 4, JP-A 2000-323404, JP 2001-513267, JP 2002-158168, etc. Multi-stage (twin stage) type exposure apparatus. To the extent permitted by national legislation in the designated and selected countries, the disclosure of the above US patents is incorporated into the text.
- the exposure apparatus EX of the present embodiment includes two substrate stages 4 and 5 that can move while holding the substrate P. Similar to the third embodiment described above, the exposure apparatus EX of the present embodiment also detects from the exposure station ST1 including the first region SP1 that can be irradiated with the exposure light EL from the projection optical system PL, and the detection systems 30 and 40. And a measurement station ST2 including a second region SP2 that can be irradiated with light Lb and Lc.
- the first substrate stage 4 is movable while holding the substrate P within a predetermined region on the base member BP including the first region SP1 of the exposure station ST1 and the second region SP2 of the measurement station ST2.
- the stage 5 can move while holding the substrate P independently of the first substrate stage 4 in a predetermined region on the base member BP including the first region SP1 and the second region SP2.
- the first substrate stage 4 and the second substrate stage 5 have substantially the same configuration.
- the second substrate stage 5 is arranged in the first region SP1 of the exposure station ST1.
- the second of the measurement station ST2 is performed in parallel with at least a part of the exposure of the substrate P held on the second substrate stage 5.
- Detection using the focus / leveling detection system 30 and detection using the mark detection system 40 are executed.
- the detection using the focus leveling detection system 30 and the mark detection system 40 in the measurement station ST2 is performed by detecting at least one of the film state of the substrate P and the edge state of the substrate P. And detection of the position information of the substrate P.
- the detection using the focus / leveling detection system 30 at the measurement station ST2 detects the formation state of the thin film on the substrate P and the surface position information on the surface of the substrate P (Z-axis, ⁇ X, and ⁇ At least one of detection of position information in the Y direction).
- the mark detection system at measuring station ST2 4 Detection using 0 includes detection of the edge state of the substrate P and detection of alignment information of the substrate P (position information in the X, ⁇ ⁇ ⁇ ⁇ , and ⁇ ⁇ directions of a plurality of shot regions on the substrate P).
- the control device 7 should place the first substrate stage 4 at the substrate exchange position RP of the measurement station ST2, and the first substrate stage 4 should be exposed using the transfer device ⁇ . Load board ⁇ . Then, the control device 7 starts the processing related to the substrate substrate held on the first substrate stage 4 in the measurement station ST2, as in the third embodiment. On the other hand, in parallel with the processing at the measurement station ST2, the exposure station ST1 starts the exposure of the substrate 10 held on the second substrate stage 5 and subjected to the measurement processing at the measurement station ST2.
- the control device 7 moves the second substrate stage 5 to the measurement station ST2 and exposes the first substrate stage 4. Move to station ST1.
- the control device 7 uses the immersion region LR.
- the liquid immersion region LR is moved onto the first substrate stage 4 while the upper force of the second substrate stage 5 is increased. For example, as shown in the schematic diagram of FIG.
- the control device 7 includes the upper surface 4F of the substrate stage 4 within a predetermined region including a position facing the lower surface of the final optical element FL (a position immediately below the projection optical system PL).
- the LR can be moved between the upper surface 4F of the substrate stage 4 and the upper surface 5F of the measurement stage 5.
- the control device 7 uses the transfer device H to transfer the substrate P on the second substrate stage 5 to the measurement station ST2. Unload. Further, the substrate P to be exposed next is loaded onto the second substrate stage 5 of the measurement station ST2, and as described above, the measurement processing using the focus leveling detection system 30 and the mark detection system 40 is performed. Done.
- step ST1 the substrate P held on the first substrate stage 4 is subjected to immersion exposure.
- the control device 7 moves the first substrate stage 4 of the exposure station ST1 to the measurement station ST2 and also measures the measurement station ST2.
- the second substrate stage 5 holding the substrate P for which the measurement processing has been completed is moved to the exposure station ST1.
- the first substrate stage 4 and the second substrate stage 5 are alternately put into the exposure station ST1, and a plurality of substrates P are sequentially exposed.
- the formation state of the thin film on the substrate P and the substrate P Since at least one of the edge states is detected, if at least one of the thin film formation state and the edge state is defective, the substrate P is not placed in the first region SP1 of the exposure station ST1. For example, appropriate measures can be taken, such as transporting the substrate P to the coater / developer device CZD. Further, since the substrate P is not arranged at the exposure station ST1, the immersion area LR is not formed on the substrate P. Therefore, similarly to the above-described embodiment, it is possible to suppress a decrease in device productivity.
- the state of the edge of the substrate P can also be detected using the focus / leveling detection system 30. Further, the formation state of the thin film on the substrate P can be detected by using the mark detection system 40. Also, either one of the focus leveling detection system 30 and the mark detection system 40 may be provided in the exposure station ST1.
- the focus / leveling detection system 30 is also used to detect the thin film formation state (and Z or the edge state of the substrate P) of the substrate P.
- the mark detection system 40 is also used to detect the edge state (and the thin film formation state of Z or substrate P), but exclusively the thin film formation state of substrate P and the edge state of Z or substrate P.
- a detection system used for detection of the sensor may be provided in the measurement station ST2.
- both the detection of the thin film formation state of the substrate P and the detection of the edge state of the substrate P are performed, but either one is performed.
- the state of the edge of the substrate P may also be detected by the detection device 60.
- a detection device that detects the edge state of the substrate P held by the temperature control holder 51 may be provided separately from the detection device 60.
- the edge state detection device of the substrate P can be configured, for example, as the mark detection system 40 of the third and fourth embodiments described above. Further, in the first embodiment described above, it is only necessary to detect the edge state of the substrate P.
- the edge state of the substrate P may be detected using the focus / leveling detection system 30.
- both the detection of the thin film formation state of the substrate P and the detection of the edge state of the substrate P may be performed, or only one of them may be performed.
- a characteristic part of this embodiment is that the edge state of the substrate P is detected before the substrate P is held on the substrate stage 4.
- components that are the same as or equivalent to those in the above-described embodiment are given the same reference numerals, and descriptions thereof are simplified or omitted.
- FIG. 15 is a schematic block diagram that shows an exposure apparatus EX according to the fifth embodiment.
- the exposure apparatus EX includes a detection device 60 ′ that detects the state of the edge of the substrate P.
- the detecting device 60 ′ detects the state of the edge of the substrate P before being carried from the coater “developer device CZD (coating device) to the exposure apparatus EX and held on the substrate stage 4.
- the exposure apparatus EX includes a transport apparatus H that transports the substrate P.
- the transfer device H can transfer the substrate P from the coater / developer device CZD to the substrate stage 4.
- the detection device 60 ′ is provided on the transport path of the transport device H.
- FIG. 16 is a schematic diagram showing the detection device 60 ′.
- the detection device 60 ′ acquires an irradiation device 61 ′ that emits a detection light Ld different from the exposure light EL, and an optical image (image) of the object illuminated by the irradiation device 61 ′ with the strong detection light Ld.
- Imaging device 62 ' As disclosed in, for example, Japanese Patent Application Laid-Open No. 2000-136916 (corresponding European Patent No. 1,001,460), the detection device 60 ′ of the present embodiment uses detection light Ld such as infrared laser light. While the substrate P is inclined with respect to the substrate P, the edge of the substrate P is illuminated with the detection light Ld, and the detection light Ld is illuminated with the detection light Ld.
- the detection device 60 ′ has an optical system 63 including a prism that guides the detection light Ld emitted from the irradiation device 61 ′ to the edge of the substrate P, and the detection light transmitted through the edge of the substrate P. At least one of the detection light Ld reflected by Ld and the edge of the substrate P enters the imaging device 62 ′.
- the detection result of the detection device 60 ′ is output to the control device 7.
- the control device 7 determines whether or not the edge state of the substrate P is the desired state based on the detection result of the detection device 60 ′.
- the state of the edge of the substrate P includes at least one of the state of forming a thin film on the edge of the substrate P and the presence / absence of foreign matter on the edge of the substrate P.
- the control device 7 uses the transfer device H to move the substrate P to a predetermined position. Carry. For example, when the control device 7 determines that the edge state of the substrate P is defective, the control device 7 uses the transfer device H to transfer the substrate P to the coater / developer device CZD. Alternatively, the control device 7 uses the transfer device H to retract the substrate P to a predetermined retreat position. On the other hand, when it is determined that the edge state of the substrate P is the desired state based on the detection result of the detection device 60 ′, the control device 7 uses the transfer device H to transfer the substrate P to the substrate stage 4. To do. The substrate stage 4 holds the substrate P of the transfer device H force. The control device 7 forms an immersion area LR on the substrate P held on the substrate stage 4 and starts immersion exposure of the substrate P.
- the edge state of the substrate P is detected before the liquid LQ immersion region LR is formed on at least a part of the substrate P. If the state is bad, appropriate measures can be taken such as transporting the substrate P to the substrate stage 4, for example, transporting the substrate P to the coater / developer device CZD. Further, since the substrate P is not transferred to the substrate stage 4, the liquid immersion region LR is not formed on the substrate P. Therefore, as in the above-described embodiment, a reduction in device productivity can be suppressed.
- the state of the edge of the substrate P may be detected by applying the detection device 60 ′ described in the present embodiment with reference to FIG. 16 to each of the above-described embodiments.
- the detection device 60 ′ described in the present embodiment with reference to FIG. 16 to each of the above-described embodiments.
- at least one of the thin film formation state on the substrate P and the edge state of the substrate P is disclosed in, for example, Japanese Patent Application Laid-Open No. 2002-195956.
- detection may be performed using a macro inspection apparatus.
- the macro inspection device on the transfer path of the transfer device H, before the substrate P is held on the substrate stage 4 or after the substrate P is held on the substrate stage, Before the liquid LQ immersion region LR is formed on at least a part of the substrate P, at least one of the state of the film on the substrate P and the state of the edge of the substrate P can be detected.
- the formation state of the second film Tc on the substrate P is detected, but the second film Tc on the substrate P may be omitted.
- the detection device detects the formation state of the lHRg.
- the control device 7 can take an appropriate measure for suppressing a decrease in device productivity using the detection result.
- the top coat film having a function of protecting the lHRg that also serves as the photosensitive material is described as an example of the second film Tc.
- an antireflection film or the like is used.
- a film having other functions may also be used.
- the two layers of the first film and the second film are formed on the substrate W.
- one layer, or a plurality of layers of three or more layers is used. This film may be formed.
- the control device 7 can take an appropriate measure for suppressing a decrease in the productivity of the device, using the detection result obtained by detecting the film formation state on the substrate P.
- the thin film formed on the substrate P is formed by a coating process using a coating device, and the detection device detects the coating state of the thin film.
- the thin film on P may be formed by a technique other than coating.
- the antireflection film may be formed by a method such as a CVD method or a PVD method, but the detection device of each of the above-described embodiments is a state of forming a thin film formed by a method such as the CVD method or the PVD method. Can also be detected. In this way, even for a thin film formed by a method other than coating (application), the detection device can detect the formation state of the thin film.
- the liquid LQ immersion region LR is at least partially on the substrate P.
- the state of the film on the substrate P and the state of the edge of the Z or the substrate P were detected, but before the substrate P was transferred to the substrate stage 4, the liquid was applied to the thin film on the substrate P.
- the above inspection may be performed in the supplied state. Such an inspection can be performed at any location outside the substrate stage. For example, it may be performed inside the exposure apparatus main body S, on the temperature control holder in the exposure apparatus EX, on the transport holder, or in the coater / developer apparatus CZD.
- the film in the liquid immersion state can be inspected.
- an example in which an immersion exposure apparatus that exposes the substrate P through the liquid LQ in the immersion region LR formed on the substrate P is used.
- a normal dry exposure apparatus that exposes the substrate through a gas without filling the optical path space of the exposure light EL with a detection device that detects the formation state of the thin film on the substrate can also be provided. it can.
- pure water was used as the liquid LQ in each of the above embodiments.
- Pure water has the advantage that it can be easily obtained in large quantities at semiconductor manufacturing factories and the like, and has little adverse effect on the photosensitive material and optical elements (lenses) on the substrate P.
- pure water has no adverse effects on the environment, and since the impurity content is extremely low, it can be expected to clean the surface of the substrate P and the surface of the optical element provided at the tip of the projection optical system PL.
- the refractive index n of pure water (water) for exposure light EL with a wavelength of about 193 nm is said to be approximately 1. 44, and ArF excimer laser light (wavelength 193 nm) is used as the light source for exposure light EL.
- lZn that is, the wavelength is shortened to about 134 nm to obtain a high resolution.
- the projection optical system PL can be used if it is sufficient to ensure the same depth of focus as in the air.
- the numerical aperture can be increased further, and the resolution is improved in this respect as well.
- the optical element FL is attached to the tip of the projection optical system PL, and the optical characteristics of the projection optical system PL, such as aberration (spherical aberration, coma aberration, etc.) are adjusted by this optical element. It can be carried out.
- An optical element attached to the tip of the projection optical system PL Alternatively, an optical plate used for adjusting the optical characteristics of the projection optical system PL may be used. Or it may be a plane parallel plate that can transmit the exposure light EL.
- the optical path space on the image surface (exit surface) side of the tip optical element (final optical element FL) is filled with liquid.
- liquid for example, International Publication No. 2004Z019
- a projection optical system that fills the optical path space on the object surface (incident surface) side of the optical element at the tip with a liquid can also be employed.
- the liquid LQ in each of the above embodiments is water, but it may be a liquid other than water! /.
- the light source of the exposure light EL is an F laser, this F laser light does not pass through water.
- PFPE perfluoropolyether
- a fluorinated fluid such as a fluorinated oil
- the portion that comes into contact with the liquid LQ is made lyophilic by, for example, forming a thin film with a substance having a small molecular structure including fluorine.
- the liquid LQ is stable against the photoresist applied to the projection optical system PL and the substrate P, which is transparent to the exposure light EL and has a refractive index as high as possible (for example, Cedar). Oil) is also possible
- Liquid LQ having a refractive index of about 1.6 to 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 may be formed of a material having a higher refractive index than quartz and fluorite (eg, 1.6 or higher)! / ⁇ .
- various fluids such as a supercritical fluid can be used.
- the position information of the mask stage 3 and the substrate stage 4 is measured using the interferometer system (3L, 4L).
- the present invention is not limited to this, and, for example, a scale provided in each stage.
- An encoder system that detects the light may be used.
- a hybrid system including both the interferometer system and the encoder system, and calibrate the measurement result of the encoder system using the measurement result of the interferometer system.
- the interferometer system and the encoder system are switched and used. Or you can use both to control the position of the stage!
- 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. Mask or reticle master (synthetic quartz, silicon wafer), etc. are applied.
- the exposure apparatus EX in addition to the step-and-scan type scanning exposure apparatus (scanning stepper) that performs mask exposure by scanning the mask M and the substrate P in synchronization with each other, the mask M and the substrate P are used.
- 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 M and the substrate P are stationary, and the substrate P is sequentially moved stepwise.
- step-and-repeat exposure after the first pattern and the substrate P are almost stationary, a reduced image of the first pattern is transferred onto the substrate P using the projection optical system. While the second pattern and the substrate P are substantially stationary, a reduced image of the second pattern may be partially exposed to the first pattern using the projection optical system, and may be collectively exposed on the substrate P (stitch). Type batch exposure equipment). 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 transferred on the substrate P and transferred sequentially.
- the power for explaining a multi-stage (twin stage) type exposure apparatus in which two substrate stages move between an exposure station and a measurement station.
- a substrate stage may be adopted.
- JP-A-11-135400 (corresponding international publication 1999/23692), JP-A-2000-164504 (corresponding US Pat. No. 6,897,963), etc.
- the present invention can also be applied to an exposure apparatus including a substrate stage for holding a substrate, a reference member on which a reference mark is formed, and a measurement stage on which Z or various types of photoelectric sensors are mounted.
- an exposure apparatus that locally fills the liquid between the projection optical system PL and the substrate P is employed.
- the present invention is disclosed in, for example, Japanese Patent Application Laid-Open No. 6-124873. Disclosed in JP-A-10-303114, US Pat. No. 5,825,043, etc. It can also be applied to a liquid immersion light exposure apparatus that performs exposure in a state where the entire surface of the substrate to be exposed is immersed in a liquid.
- the exposure apparatus provided with the projection optical system PL has been described as an example.
- the present invention can be applied to an exposure apparatus and an exposure method that do not use the projection optical system PL. Even when 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 a liquid immersion region is formed in a predetermined space between the optical member and the substrate. It is formed.
- the type of the exposure apparatus EX is not limited to an exposure apparatus for manufacturing a semiconductor element that exposes a semiconductor element pattern on the substrate P.
- force using a light-transmitting mask in which a predetermined light-shielding pattern (or phase pattern 'dimming pattern) is formed on a light-transmitting substrate is used instead of this mask.
- a predetermined light-shielding pattern or phase pattern 'dimming pattern
- an electronic mask (variable molding mask) that forms a transmission pattern, a reflection pattern, or a light emission pattern based on electronic data of a pattern to be exposed.
- a DMD Digital Micro-mirror Device
- spatial light modulator spatial light modulator
- an exposure apparatus that exposes a line “and” space pattern on the substrate P by forming interference fringes on the substrate P (lithography)
- the present invention can also be applied to a system.
- JP-T-2004-519850 corresponding US Pat. No. 6,611,316
- two mask patterns are synthesized on the substrate via the 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 exposure apparatus EX is configured to perform various mechanical subsystems including the respective constituent elements recited in the claims of the present application with predetermined mechanical accuracy, electrical accuracy, and optical accuracy. Manufactured by assembling to maintain the degree. In order to ensure these various accuracies, before and after the assembly, various optical systems are adjusted to achieve optical accuracy, various mechanical systems are adjusted to achieve mechanical accuracy, various electrical systems Is adjusted to achieve electrical accuracy.
- the assembly process from various subsystems to the exposure system 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 adjustment is performed to ensure various accuracies for the entire exposure apparatus. It is desirable to manufacture the exposure apparatus in a clean room in which the temperature and cleanliness are controlled.
- a microdevice such as a semiconductor device includes a step 201 for designing a function / performance of the microdevice, a step 202 for producing a mask (reticle) based on the design step, Step 203 of manufacturing a substrate as a base material, forming a thin film on the substrate, detecting and evaluating the state of the thin film according to the above-described embodiment, exposing the mask pattern to the substrate, and developing the exposed substrate It is manufactured through substrate processing step 204 including substrate processing (exposure processing), device assembly step (including processing processes such as dicing process, bonding process, and knocking process) 205, inspection step 206, and the like.
- substrate processing exposure processing
- device assembly step including processing processes such as dicing process, bonding process, and knocking process
- the substrate can be exposed satisfactorily, and the decrease in device productivity can be suppressed.
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- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
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Abstract
Description
Claims
Priority Applications (3)
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US11/922,415 US20090033890A1 (en) | 2005-06-29 | 2006-06-29 | Exposure apparatus, substrate processing method, and device producing method |
EP06767590A EP1898448A4 (en) | 2005-06-29 | 2006-06-29 | EXPOSURE APPARATUS, METHOD FOR PROCESSING SUBSTRATE, AND METHOD FOR MANUFACTURING DEVICE |
IL188297A IL188297A0 (en) | 2005-06-29 | 2007-12-20 | Exposure apparatus, substrate processing method and device producing method |
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JP2005190254 | 2005-06-29 | ||
JP2005-190254 | 2005-06-29 | ||
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US (1) | US20090033890A1 (ja) |
EP (1) | EP1898448A4 (ja) |
KR (1) | KR20080015778A (ja) |
IL (1) | IL188297A0 (ja) |
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CN100465797C (zh) * | 2007-01-24 | 2009-03-04 | 友达光电股份有限公司 | 具有宏观检测的显影装置 |
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JP2009117832A (ja) | 2007-11-06 | 2009-05-28 | Asml Netherlands Bv | リソグラフィの基板を準備する方法、基板、デバイス製造方法、密封コーティングアプリケータ及び密封コーティング測定装置 |
NL1036715A1 (nl) * | 2008-04-16 | 2009-10-19 | Asml Netherlands Bv | Lithographic apparatus. |
US8941809B2 (en) * | 2008-12-22 | 2015-01-27 | Screen Semiconductor Solutions Co., Ltd. | Substrate processing apparatus and substrate processing method |
JP5410212B2 (ja) * | 2009-09-15 | 2014-02-05 | 株式会社Sokudo | 基板処理装置、基板処理システムおよび検査周辺露光装置 |
JP5510299B2 (ja) * | 2010-12-13 | 2014-06-04 | ウシオ電機株式会社 | 露光装置および露光方法 |
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Also Published As
Publication number | Publication date |
---|---|
TW200707124A (en) | 2007-02-16 |
EP1898448A4 (en) | 2011-06-29 |
IL188297A0 (en) | 2008-04-13 |
EP1898448A1 (en) | 2008-03-12 |
US20090033890A1 (en) | 2009-02-05 |
SG162801A1 (en) | 2010-07-29 |
KR20080015778A (ko) | 2008-02-20 |
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