WO2005122219A1 - 基板保持装置及びそれを備える露光装置、露光方法、デバイス製造方法、並びに撥液プレート - Google Patents
基板保持装置及びそれを備える露光装置、露光方法、デバイス製造方法、並びに撥液プレート Download PDFInfo
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- WO2005122219A1 WO2005122219A1 PCT/JP2005/010458 JP2005010458W WO2005122219A1 WO 2005122219 A1 WO2005122219 A1 WO 2005122219A1 JP 2005010458 W JP2005010458 W JP 2005010458W WO 2005122219 A1 WO2005122219 A1 WO 2005122219A1
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- liquid
- holding
- processing substrate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
- H01L21/0271—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers
- H01L21/0273—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers characterised by the treatment of photoresist layers
- H01L21/0274—Photolithographic processes
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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
- G03F7/70425—Imaging strategies, e.g. for increasing throughput or resolution, printing product fields larger than the image field or compensating lithography- or non-lithography errors, e.g. proximity correction, mix-and-match, stitching or double patterning
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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
- G03F7/70691—Handling of masks or workpieces
- G03F7/707—Chucks, e.g. chucking or un-chucking operations or structural details
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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
- G03F7/70691—Handling of masks or workpieces
- G03F7/70716—Stages
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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
- G03F7/708—Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
- G03F7/70858—Environment aspects, e.g. pressure of beam-path gas, temperature
- G03F7/70866—Environment aspects, e.g. pressure of beam-path gas, temperature of mask or workpiece
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/6838—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping with gripping and holding devices using a vacuum; Bernoulli devices
Definitions
- Substrate holding apparatus including the same, exposure method, device manufacturing method, and liquid-repellent plate
- the present invention relates to a substrate holding device for holding a processing substrate, an exposure apparatus including the same, an exposure method, a device manufacturing method, and a lyophobic plate.
- Semiconductor devices and liquid crystal display devices are manufactured by a so-called photolithography technique in which a pattern formed on a mask is transferred onto a photosensitive substrate.
- An exposure apparatus used in the photolithography process has a mask stage for supporting a mask and a substrate stage for supporting a substrate, and sequentially moves the mask stage and the substrate stage to project a pattern of the mask through a projection optical system. Transfer to the substrate.
- further improvement in the resolution of the projection optical system has been desired in order to cope with higher integration of device patterns.
- the resolution of the projection optical system increases as the exposure wavelength used decreases and as the numerical aperture of the projection optical system increases. Therefore, the exposure wavelength used in the exposure apparatus is becoming shorter year by year, and the numerical aperture of the projection optical system is also increasing.
- the mainstream exposure wavelength is 248 nm of KrF excimer laser, and 193 nm of short wavelength ArF excimer laser is being put to practical use.
- the depth of focus (DOF) is as important as the resolution.
- the resolution R and the depth of focus ⁇ are respectively expressed by the following equations.
- ⁇ is the exposure wavelength
- ⁇ is the numerical aperture of the projection optical system
- k the coefficient
- Equations (1) and (2) show that when the exposure wavelength is shortened and the numerical aperture NA is increased in order to increase the resolution R, the depth of focus ⁇ becomes narrower.
- a liquid immersion method disclosed in WO 99/49504 has been proposed.
- the space between the lower surface of the projection optical system and the surface of the substrate is filled with a liquid such as water or an organic solvent to form an immersion area, and the wavelength of the exposure light in the liquid is changed to lZn (n Is used to improve the resolution by using the refractive index of the liquid, which is usually 1.2 to 1.6), and to increase the depth of focus by about n times.
- a liquid such as a gap between the substrate and the substrate stage may be used.
- the substrate stage Through the substrate to the back side of the substrate, and may enter between the substrate and the substrate stage (substrate holder).
- the substrate stage cannot hold the substrate well.
- an adhering mark (a so-called water mark) is formed by vaporization of the liquid that has entered.
- the watermark also acts as a foreign substance, there is a possibility that the flatness of the supported substrate may be degraded. In addition, there is a possibility that inconvenience such as the substrate stage being thermally deformed due to heat of vaporization when the liquid entering between the substrate and the substrate stage is vaporized.
- the present invention has been made in view of such circumstances, and has as its object to provide a substrate holding apparatus and an exposure apparatus capable of easily performing a maintenance operation, and a device manufacturing method using the exposure apparatus. And Further, the present invention provides a liquid repellent plate suitable for an immersion exposure apparatus. The purpose is to provide. Still another object of the present invention is to provide a substrate holding device, an exposure device, and a device manufacturing method using the exposure device, which can prevent liquid from entering the back surface of the substrate.
- the present invention employs the following configuration corresponding to Figs. 1 to 17 shown in the embodiment.
- the reference numerals in parentheses attached to each element are merely examples of the element, and do not limit each element.
- a substrate holding device for holding a processing substrate (P), comprising: a base material (PHB); and a processing substrate (P) formed on the base material (PHB).
- the first holding part (PH1) that holds the substrate (PH1) and the plate (T) that is formed on the base material (PHB) and that holds the plate (T) near the processing substrate (P) that is held by the first holding part (PH1).
- a substrate holding device (PH) comprising a second holding portion (PH2) is provided.
- a plate arranged near the processing substrate sucked and held by the first holding unit can be easily attached to and detached from the second holding unit.
- the plate since the plate is configured to be sucked and held by the second holding unit, it is possible to prevent a local force from being applied to the plate, the base material, and the like. Therefore, it is possible to suppress the deformation of the plate or the base material.
- the term “processed substrate” means a substrate on which various types of processing including exposure processing are performed, and is used for a semiconductor wafer for manufacturing a semiconductor device, a substrate for a liquid crystal display (LCD), and a thin film magnetic head.
- substrates coated with photoresist which is a photosensitive material, used for various purposes such as ceramic wafers, masks or reticle masters (synthetic quartz, silicon wafers) used in exposure equipment.
- an exposure apparatus for projecting an image of a pattern onto a processing substrate (P) and exposing the processing substrate (P), wherein the first plate (T1) , A second plate (T2), a first holding part (PH1) for sucking and holding the processing substrate (P), and a first holding part (PH) near the processing substrate (P) sucked and held by the first holding part (PH1).
- EX Exposure apparatus
- the first and second plates disposed near the processing substrate sucked and held by the first holding unit can be easily attached to and detached from the second and third holding units. . Therefore, for example, when the first and second plates are damaged, the force S can be easily replaced with a new plate. Further, it is possible to replace only one of the first plate and the second plate, and it is possible to replace only an arbitrary plate among a plurality of plates.
- the first and second plates forming the upper surface of the substrate holding device are configured to be sucked and held by the second and third holding units, a local force is applied to the first and second plates and the base material. Joining can be prevented. Therefore, deformation of the first and second plates and the base material can be suppressed.
- a device manufacturing method characterized by using the above-described exposure apparatus (EX). ADVANTAGE OF THE INVENTION According to this invention, since exposure processing and measurement processing can be performed favorably, a device having desired performance can be provided.
- the processing substrate (P) held by the substrate holding device (PH) is irradiated with exposure light (EL) via the liquid (LQ), thereby irradiating the processing substrate (P).
- the processing substrate (P) that is suction-held by the substrate holding device (PH) and is suction-held by the substrate holding device (PH).
- the liquid repellent plate (T, Tl, ⁇ 2) whose surface forms a liquid repellent flat portion (Ta, Td) is provided near the plate.
- a liquid-repellent flat portion can be formed on the surface of the processing substrate in the vicinity of the processing substrate. Therefore, even when the edge region of the processing substrate is exposed, the liquid immersion area can be maintained well. S can do it. Further, for example, when the lyophobic property of the lyophobic plate deteriorates, the lyophobic performance of the surface of the flat portion formed in the vicinity of the processing substrate can be maintained only by replacing the lyophobic plate with a new lyophobic plate. Therefore, the force S for suppressing the liquid from remaining on the substrate holding device can be obtained, and even if the liquid remains, the liquid can be collected smoothly.
- the environment (temperature and humidity) where the substrate is placed fluctuates due to the vaporization of the remaining liquid, and the substrate and the substrate holding device are thermally deformed, or various types of measurement light for measuring the positional information of the substrate are used. It is possible to prevent inconveniences such as a change in the optical path and formation of a liquid adhesion mark (a so-called water mark).
- Substrate holding device (PH) provided with a liquid recovery port (61, 161, 181).
- the plate disposed near the processing substrate held by the first holding unit can be easily attached to and detached from the second holding unit.
- the liquid recovery port allows the liquid that has penetrated from the gap between the processing substrate held by the first holding unit and the plate held by the second holding unit to be collected. Inconvenience that the liquid flows around can be prevented.
- a substrate holding apparatus for holding a processing substrate (P) to which exposure light (EL) is irradiated via a liquid (LQ), comprising a substrate (PHB) And a first holding part (PH1) formed on the base material (PHB) and holding the processing substrate (P), and a first holding part (PH1) formed on the base material (PHB) and held on the first holding part (PH1)
- the plate arranged near the processing substrate held by the first holding unit can be easily attached to and detached from the second holding unit.
- the plate since the plate has a first surface substantially flush with the surface of the processing substrate, even if a part of the liquid immersion region formed on the processing substrate is disposed on the plate, the immersion region is formed. Power to maintain good S
- the plate since the plate has a second surface facing the back surface of the processing substrate at the periphery of the processing substrate, the plate is held by the processing substrate held by the first holding portion and the second holding portion. The problem that the liquid that has penetrated from the gap with the immersed plate flows around to the back side of the substrate can be prevented.
- the substrate holding device (PH) described above is provided, and the exposure light (EL) is applied to the processing substrate (P) held by the substrate holding device (PH) via the liquid (LQ). ) To expose the processed substrate (P), thereby providing an exposure apparatus (EX).
- a plate disposed near the processing substrate held by the first holding unit can be easily attached to and detached from the second holding unit. Therefore, for example, if the plate is damaged, it can be easily replaced with a new plate.
- the intrusion of the liquid into the back side of the substrate is prevented, the exposure can be performed accurately while the substrate is well held by the substrate holding device.
- a device manufacturing method characterized by using the above-described exposure apparatus (EX). ADVANTAGE OF THE INVENTION According to this invention, since exposure processing and measurement processing can be performed favorably, a device having desired performance can be provided.
- a substrate stage that moves while holding a processing substrate (P) to which exposure light is applied, and includes a substrate (PHB) and a plate ( T), a first holding portion (PH1) formed on the base material (PH B) and detachably holding the processing substrate (P), and a first holding portion (PH1) formed on the base material (PHB),
- a substrate stage comprising: a second holder (PH2) for detachably holding T) near a processing substrate held by the first holder.
- an exposure method for exposing a processing substrate (P) in a predetermined pattern wherein the processing substrate (P) is mounted on a substrate holder provided with a flat surface (Ta). (PH) between the processing substrate (P) and the flat surface (Ta) with a predetermined gap (A), and irradiating the processing substrate with exposure light via a liquid (LQ).
- an exposure method including exposing a processing substrate, and recovering a liquid (LQ) that has entered from a gap (A) after the exposure processing of the exposed processing substrate is completed. According to the exposure method of the present invention, it is possible to prevent the vibration or the like caused by the liquid recovery operation from affecting the exposure operation.
- FIG. 1 is a schematic configuration diagram showing an embodiment of an exposure apparatus of the present invention.
- FIG. 2 is a side sectional view showing one embodiment of a substrate holder.
- FIG. 3 is a plan view showing one embodiment of a substrate holder.
- FIG. 4 is a plan view of a substrate stage.
- FIG. 5 is an enlarged view of a main part of FIG. 2.
- FIG. 6 is a view showing a state where a substrate and a plate member are separated from a substrate holder.
- FIG. 7 is a flowchart illustrating an example of an exposure procedure.
- FIG. 8 is a schematic view showing a state in which a substrate holder is polished.
- FIG. 9 is a schematic diagram showing a state in which liquid is collected from a liquid collection port of a substrate holder.
- FIG. 10 is a view showing another embodiment (second embodiment) of the substrate holder.
- FIG. 11 is a view showing another embodiment (third embodiment) of a substrate holder.
- FIG. 12 is a view showing another embodiment (fourth embodiment) of the substrate holder.
- FIG. 13 is a view showing another embodiment (fifth embodiment) of the substrate holder.
- FIG. 14 is a plan view showing another embodiment (sixth embodiment) of the substrate holder.
- FIG. 15 is a side sectional view of a substrate holder according to a sixth embodiment.
- FIG. 16 is a schematic view showing another embodiment of the exposure apparatus.
- FIG. 17 is a flowchart showing an example of a semiconductor device manufacturing process.
- FIG. 18 is a schematic diagram for explaining a problem of the conventional technique.
- Vacuum system 42: 1st peripheral wall (1st outer wall), 46: 1st support, 60: 2nd vacuum system, 61 ⁇ 2nd suction port (liquid recovery port), 62: 2nd peripheral wall Part (second outer wall), 63: third peripheral wall (third outer wall), 66: second support, 93: moving mirror (mirror), 94: interferometer, 160: vacuum system for recovery, 161 ... Liquid recovery port, 180... recovery vacuum system, 181... liquid recovery port, 182... slope, 192... slope, 300... reference part, AR1... projection area, AR2... immersion area, EL... exposure light, EX: exposure equipment, LQ: liquid, P: substrate (processed substrate), PH: substrate holder (substrate holding device), PH1: first holding unit, PH2: second holding unit, PH3: third holding unit, PHB ... Substrate, PL ... Projection optical system, PST ... Substrate stage, T ... Plate member (plate, water-repellit
- FIG. 1 is a schematic configuration diagram showing a first embodiment of the exposure apparatus of the present invention.
- the exposure apparatus EX has a mask stage MST that can move and support a mask M, and a substrate holder (substrate holding device) PH that holds a substrate P, and a base held by the substrate holder PH.
- a substrate stage PST that can move the plate P, an illumination optical system IL that illuminates the mask M supported by the mask stage MST with the exposure light EL, and an image of the pattern of the mask M illuminated with the exposure light EL
- It includes a projection optical system PL that projects onto the substrate P supported by the substrate stage PST, and a control device CONT that controls the overall operation of the exposure apparatus EX.
- the exposure apparatus EX of the present embodiment is an immersion exposure apparatus to which the immersion method is applied in order to improve the resolution by substantially shortening the exposure wavelength and to substantially increase the depth of focus.
- pure water is used for the liquid LQ.
- the exposure apparatus EX at least while the pattern image of the mask M is being transferred onto the substrate P, at least a portion on the substrate P including the projection area AR1 of the projection optical system PL by the liquid LQ supplied with the liquid supply mechanism 10 force. Then, an immersion area AR2 larger than the projection area AR1 and smaller than the substrate P is locally formed.
- the exposure apparatus EX fills the liquid LQ between the optical element 2 at the image plane side end of the projection optical system PL and the surface (exposure surface) of the substrate P, and the projection optical system PL and the substrate P
- the substrate P is exposed by projecting a pattern image of the mask M onto the substrate P held by the substrate holder PH via the liquid LQ and the projection optical system PL.
- the mask M and the substrate P are set in the scanning direction.
- a scanning exposure apparatus a so-called scanning stepper
- the direction that coincides with the optical axis AX of the projection optical system PL is the Z-axis direction
- the synchronous movement direction (scanning direction) between the mask M and the substrate P in a plane perpendicular to the Z-axis direction is the X-axis direction.
- the direction perpendicular to the Z-axis direction and the X-axis direction (non-running direction) is defined as the Y-axis direction.
- the directions of rotation (tilt) around the X, Y, and Z axes are the ⁇ X, ⁇ Y, and ⁇ directions, respectively.
- the “substrate” referred to here is a processed substrate on which various processing processes including an exposure process are performed, and includes a semiconductor wafer coated with a photoresist as a photosensitive material.
- the “mask” includes a reticle on which a device pattern to be reduced and projected onto a substrate is formed.
- the illumination optical system IL illuminates the mask ⁇ ⁇ ⁇ supported by the mask stage MST with the exposure light EL.
- the exposure light source that emits the exposure light EL, and the exposure light that is emitted from the exposure light source.
- Optical integrator that equalizes EL illuminance, exposure light from the optical integrator Condenser lens that collects the EL, relay lens system, variable field stop that sets the illumination area on the mask with the exposure light EL in a slit shape, etc. have.
- a predetermined illumination area on the mask ⁇ is illuminated by the illumination optical system IL with exposure light EL having a uniform illuminance distribution.
- the exposure light EL emitted from the illumination optical system IL includes, for example, bright ultraviolet rays (g-rays, h-rays, i-rays) emitted from a mercury lamp and far ultraviolet light (DUV light) such as KrF excimer laser light (wavelength 248 nm). And ArF excimer laser light (wavelength 193 nm) and F laser light (wavelength 157 nm)
- Vacuum ultraviolet light (VUV light) or the like is used.
- ArF excimer laser light is used.
- the liquid LQ in the present embodiment is pure water, and can be transmitted even if the exposure light EL is ArF excimer laser light.
- pure water can transmit deep ultraviolet light (DUV light) such as bright lines (g-line, h-line, i-line) and KrF excimer laser light (wavelength: 248 nm).
- the mask stage MST is movable while holding the mask M.
- the mask M is fixed by vacuum suction (or electrostatic suction).
- the mask stage MST is two-dimensionally movable in a plane perpendicular to the optical axis AX of the projection optical system PL, that is, in an XY plane, and is finely rotatable in the ⁇ Z direction.
- Mask stage MST is driven by a mask stage such as a linear motor Driven by device MSTD.
- the mask stage drive MSTD is controlled by the controller CONT.
- a movable mirror 91 that moves together with the mask stage MST is provided on the mask stage MST.
- a laser interferometer 92 is provided at a position facing the movable mirror 91.
- the moving mirror 91 is a mirror for the laser interferometer 92 for measuring the position of the mask stage MST.
- the position of the mask M on the mask stage MST in the two-dimensional direction (XY direction) and the rotation angle in the ⁇ Z direction (including the rotation angles in the ⁇ X and ⁇ Y directions in some cases) are real-time by the laser interferometer 92. Measured.
- the measurement result of the laser interferometer 92 is output to the control unit CONT.
- the control device CONT controls the position of the mask M supported by the mask stage MST by driving the mask stage driving device MSTD based on the measurement result of the laser interferometer 92.
- the projection optical system PL projects and exposes the pattern of the mask M onto the substrate ⁇ at a predetermined projection magnification ⁇ .
- the projection optical system PL is composed of a plurality of optical elements including an optical element 2 provided at the end on the substrate P side, and these optical elements are supported by a lens barrel PK.
- the projection optical system PL is a reduction system having a projection magnification of, for example, 1/4, 1/5, or 1/8. Note that the projection optical system PL may be either a unity magnification system or an enlargement system.
- the projection optical system PL may be any one of a catadioptric system including a refractive element and a reflective element, a dioptric system not including a reflective element, and a reflective system not including a refractive element.
- the optical element 2 at the tip of the projection optical system PL of the present embodiment is provided so as to be detachable (replaceable) with respect to the lens barrel PK, and the optical element 2 receives the liquid LQ in the liquid immersion area AR2. Contact.
- the substrate stage PST has a substrate holder PH that holds the substrate P by suction, and a plate member T that is held by the substrate holder PH.
- the substrate stage PST can move two-dimensionally in the XY plane on the base BP. It can be slightly rotated in the direction. Further, the substrate stage PST can also move in the Z-axis direction, the ⁇ X direction, and the ⁇ Y direction. That is, the substrate P held by the substrate holder PH can move in the Z-axis direction, the ⁇ -axis direction, the ⁇ -axis direction (inclination direction), the two-dimensional direction (XY-direction), and the ⁇ -axis direction.
- the substrate stage PST is driven by a substrate stage driving device PSTD including a linear motor and the like.
- the substrate stage drive PSTD is controlled by the controller CONT. did Accordingly, the position of the substrate P held in the substrate holder PH in the Z-axis direction (focus position), the position in the tilt direction, the position in the XY direction, and the position in the Z direction are determined via the substrate stage driving device PSTD. Controlled by the control unit CONT.
- the moving mechanism of the substrate stage PST is disclosed in, for example, JP-A-9-5463 and JP-A-59-101835.
- the substrate holder PH is provided with a movable mirror 93 that moves with respect to the projection optical system PL together with the substrate holder PH.
- a laser interferometer 94 is provided at a position facing the movable mirror 93.
- the moving mirror 93 is a mirror for the laser interferometer 94 for measuring the position of the substrate stage PST (substrate holder PH).
- the position of the substrate stage PST in the two-dimensional direction and the rotation angle in the ⁇ Z direction are measured by the laser interferometer 94 in real time.
- the position of the substrate PST by the laser interferometer 94, the position of the substrate P in the two-dimensional direction and the rotation angle in the ⁇ Z direction are measured.
- the exposure apparatus EX is provided with position information on the surface of the substrate P held by the substrate holder PH of the substrate stage PST as disclosed in, for example, JP-A-8-37149. It has a focus / leveling detection system that detects The focus leveling detection system detects positional information of the surface of the substrate P in the Z-axis direction and tilt information of the substrate P in the ⁇ X and ⁇ Y directions.
- the measurement result of laser interferometer 94 is output to control device CONT.
- the light reception result of the focus' leveling detection system is also output to the controller CONT.
- the controller CONT drives the substrate stage driving device PSTD based on the detection result of the focus leveling detection system, controls the focus position and the tilt angle of the substrate P, and projects the surface of the substrate P onto the projection optical system. Adjust to the image plane of PL.
- the controller CONT drives the substrate stage PST via the substrate stage driving device PSTD in the two-dimensional coordinate system defined by the laser interferometer 94 based on the measurement result of the laser interferometer 94, The position of the substrate P in the X-axis direction and the Y-axis direction is controlled.
- a substrate alignment system 95 for detecting an alignment mark on the substrate P or a reference mark PFM described later provided on the substrate stage PST is provided near the tip of the projection optical system PL.
- a substrate stage P as disclosed in Japanese Patent Application Laid-Open No. 4-65603 (corresponding to US Pat. No. 5,493,403) is used.
- the ST is stopped, the mark is irradiated with illumination light such as white light from a halogen lamp, and an image of the obtained mark is captured within a predetermined field of view by an image sensor, and the mark is processed by image processing.
- the FIA (field 'image' alignment) method of measuring the position is adopted.
- a mask alignment system 96 for detecting a reference mark MFM described later provided on the substrate holder PH via the mask M and the projection optical system PL is provided. ing.
- the mask alignment system 96 of the present embodiment for example, as disclosed in Japanese Patent Application Laid-Open No. 7-176468, the mark is irradiated with light, and image data of the mark captured by a CCD camera or the like is subjected to image processing.
- the VRA (visual reticle 'alignment) method of detecting the mark position by using this method is adopted.
- the liquid supply mechanism 10 is for supplying a predetermined liquid LQ to the image plane side of the projection optical system PL, and includes a liquid supply unit 11 capable of sending out the liquid LQ and a liquid supply unit 11. And a supply pipe 13 for connecting one end.
- the liquid supply unit 11 includes a tank for accommodating the liquid LQ, a pressure pump, a filter unit for removing foreign substances and bubbles contained in the liquid LQ, and the like.
- the liquid supply operation of the liquid supply unit 11 is controlled by the control device CONT.
- the liquid supply mechanism 10 supplies the liquid LQ onto the substrate P. Note that at least a part of the tank, the pressure pump, the filter unit, and the like may not be provided in the exposure apparatus EX, and equipment such as a factory in which the exposure apparatus EX is installed may be substituted.
- the liquid recovery mechanism 20 is for recovering the liquid LQ on the image plane side of the projection optical system PL, and includes a liquid recovery unit 21 capable of recovering the liquid LQ, and one end of the liquid recovery unit 21. And a collection pipe 23 for connecting the same.
- the liquid recovery unit 21 includes, for example, a vacuum system (suction device) such as a vacuum pump, a gas-liquid separator that separates the recovered liquid LQ from the gas, a tank that stores the recovered liquid LQ, and the like. It is also possible to use all the equipment such as the vacuum system, gas-liquid separator, and tank in the exposure apparatus EX instead of using the equipment in the factory where the exposure apparatus EX is installed.
- the liquid recovery operation of the liquid recovery unit 21 is controlled by the controller CONT. In order to form the liquid immersion area AR2 on the substrate P, the liquid recovery mechanism 20 recovers a predetermined amount of the liquid LQ on the substrate P supplied from the liquid supply mechanism 10.
- a nose piece member 70 is arranged.
- the nozzle member 70 is an annular member provided above the substrate P (substrate stage PST) so as to surround the side surface of the optical element 2.
- a gap is provided between the nozzle member 70 and the optical element 2, and the nozzle member 70 is supported by a predetermined support mechanism so as to be separated from the optical element 2 by vibration.
- the liquid LQ is configured not to enter the gap, and air bubbles are not mixed into the liquid LQ from the gap.
- Nozzle member 70 is formed of, for example, stainless steel.
- the nozzle member 70 is provided above the substrate P (substrate stage PST), and has a supply port 12 arranged so as to face the surface of the substrate P.
- the nozzle member 70 has two supply ports 12A and 12B.
- the supply ports 12A and 12B are provided on the lower surface 70A of the sloping member 70.
- a supply flow path through which the liquid LQ supplied onto the substrate P flows is formed inside the nose piece member 70.
- One end of the supply flow path of the nozzle member 70 is connected to the other end of the supply pipe 13, and the other end of the supply flow path is connected to each of the supply ports 12A and 12B.
- the other end of the supply flow path formed inside the nozzle member 70 branches from the middle so as to be connectable to each of the plurality (two) of supply ports 12A and 12B.
- the nozzle member 70 is provided above the substrate 3 (substrate stage PST), and has a collection port 22 arranged so as to face the surface of the substrate P.
- the recovery roller 22 is formed in an annular shape so as to surround the optical element 2 (projection area AR1) of the projection optical system PL and the supply port 12 on the lower surface 70A of the nozzle member 70.
- a collection flow path through which the liquid LQ collected through the collection port 22 flows is formed inside the sloping member 70.
- One end of the collection flow path of the flap member 70 is connected to the other end of the collection pipe 23, and the other end of the collection flow path is connected to the collection port 22.
- the recovery flow path formed inside the nozzle member 70 includes an annular flow path corresponding to the recovery port 22, and a manifold flow path for collecting the liquid LQ flowing through the annular flow path. I have.
- the nozzle member 70 forms a part of each of the liquid supply mechanism 10 and the liquid recovery mechanism 20.
- the supply ports 12A and 12B constituting the liquid supply mechanism 10 are provided at respective positions on both sides in the X-axis direction across the projection area AR1 of the projection optical system PL. It is.
- the recovery port 22 constituting the liquid recovery mechanism 20 is provided outside the liquid supply ports 12A and 12B of the liquid supply mechanism 10 with respect to the projection area AR1 of the projection optical system PL. That is, the recovery port 22 is arranged at a position farther from the projection area AR1 than the liquid supply ports 12A and 12B.
- the projection area AR1 of the projection optical system PL in the present embodiment is set to have a rectangular shape in plan view with the Y-axis direction as the long direction and the X-axis direction as the short direction.
- the operation of the liquid supply unit 11 is controlled by the control device CONT.
- the control device CONT can control the amount of liquid supplied by the liquid supply unit 11 per unit time.
- the control device CONT sends out the liquid LQ from the liquid supply unit 11, and supplies the liquid LQ above the substrate P via the supply pipe 13 and the supply flow path formed inside the nozzle member 70.
- the liquid LQ is supplied onto the substrate P from the supply ports 12A and 12B provided in the apparatus.
- the liquid LQ is supplied from both sides of the projection area AR1 via the supply ports 12A and 12B.
- the liquid recovery operation of liquid recovery unit 21 is controlled by controller CONT.
- the control device CONT can control the amount of liquid collected by the liquid recovery unit 21 per unit time.
- the liquid LQ on the substrate P recovered from the recovery port 22 provided above the substrate P is recovered by the liquid recovery unit 21 via a recovery flow path formed inside the nozzle member 70 and a recovery pipe 23.
- the number, shape, arrangement, and the like of the supply ports 12A and 12B and the recovery port 22 are not limited to those described above, but may be any structure that fills the optical path of the exposure light EL with the liquid LQ.
- the lower surface (liquid contact surface) 2A of the optical element 2 of the projection optical system PL and the lower surface (liquid contact surface) 70A of the nose piece member 70 have lyophilicity (hydrophilicity).
- the optical element 2 since the optical element 2 is formed of fluorite having a high affinity for pure water, the pure water can be brought into close contact with almost the entire liquid contact surface 2A of the optical element 2.
- the liquid supply mechanism 10 supplies pure water as the liquid LQ in the present embodiment, the adhesion between the liquid contact surface 2A of the optical element 2 and the liquid LQ can be increased, and the optical element 2 and the substrate P Can be reliably filled with the liquid LQ.
- the optical element 2 may be quartz having a high affinity for water.
- the liquid contacting surface 2A of the optical element 2 and the liquid contacting surface 70A of the knurling member 70 may be subjected to a lyophilic (lyophilic) treatment to further enhance the affinity with the liquid LQ.
- a lyophilic material such as MgF, Al 2 O, or SiO is provided on the liquid contact surface. Processing.
- the liquid LQ in the present embodiment is water having a large polarity
- a thin film may be provided with a substance having a molecular structure having a large polarity such as alcohol, for example, as a lyophilic treatment (hydrophilization treatment).
- the nozzle member 70 may be formed of hydrophilic titanium having a high affinity for water.
- Fig. 2 is a side sectional view of the substrate holder PH holding the substrate P and a plate member T described later by suction
- Fig. 3 is a plan view of the substrate holder PH viewed from above
- Fig. 4 is a plan view of the substrate stage PST viewed from above. It is.
- the substrate holder PH includes a base material PHB, a first holding part PH1 formed on the base material PHB and adsorbing and holding the substrate P, and a first holding part PH1 formed on the base material PHB.
- a second holding part PH2 for holding the plate member T by suction is provided near the substrate P held by suction on the substrate.
- the base material PHB of the substrate holder PH is movable.
- the plate member T is a member different from the base material PHB, is provided detachably with respect to the base material PHB of the substrate holder PH, and is replaceable.
- a state in which the plate member T is held by suction on the base material PHB is referred to as a substrate stage PST.
- the plate member T is disposed on the substrate holder PH near the substrate P held by the first holding part PH1, and around the surface Pa of the substrate P held by the first holding part PH1.
- the surface Ta of the plate member T held by the second holding portion PH2 is arranged.
- Each of the front surface Ta and the back surface Tb of the plate member T is a flat surface (flat portion).
- the plate member T has substantially the same thickness as the substrate P.
- the surface (flat surface) Ta of the plate member T held by the second holding portion PH2 and the surface Pa of the substrate P held by the first holding portion PH1 are almost flush.
- the plate member T held by the second holding portion PH2 forms a flat surface Ta substantially flush with the surface Pa of the substrate P around the substrate P held by the first holding portion PH1.
- the upper surface of the substrate stage PST has a flat surface (full surface) substantially over the entire area including the flat surface Ta of the held plate member T and the surface Pa of the held substrate P. (Flat surface).
- the base material PHB of the substrate holder PH is formed in a rectangular shape in a plan view, and two mutually perpendicular side surfaces of the base material PHB of the substrate holder PH are provided.
- Basis A movable mirror 93 for the laser interferometer 94 for measuring the position of the material PHB (substrate holder PH) is formed.
- the outer shape of the plate member T is formed in a rectangular shape in plan view so as to conform to the shape of the base material PHB, and a substantially circular hole in which the substrate P can be arranged at the center.
- the plate member T is a substantially annular member, and is disposed so as to surround the substrate P held by the first holding portion PH1 of the substrate holder PH.
- the surface Ta of the plate member T held by the second holding part PH2 is arranged around the substrate P held by the first holding part PH1, and is formed so as to surround the substrate P.
- the outer shape of the plate member T is formed in a rectangular shape in plan view so as to substantially match the outer shape of the substrate PHB, but the plate member T must be larger than the base material PHB. You can also. In this case, since the periphery of the rectangular plate member T overhangs the outer surface of the base material PHB, the liquid flows to the mirror surface for the interferometer formed on the outer surface of the base material PHB. Can be prevented from adhering.
- the first holding portion PH1 of the substrate holder PH includes a convex first support portion 46 formed on the base material PHB, and a periphery of the first support portion 46. It has an annular first peripheral wall portion 42 formed on the base material PHB so as to surround the first peripheral wall portion, and a first suction port 41 formed on the base material PHB inside the first peripheral wall portion 42.
- the plurality of first support portions 46 are formed uniformly inside the first peripheral wall portion 42.
- the first support portion 46 includes a plurality of support pins.
- the first suction ports 41 are for sucking and holding the substrate P, and are respectively provided at a plurality of predetermined positions on the upper surface of the base material PHB other than the first support portions 46 inside the first peripheral wall portion 42. Is provided. In the present embodiment, a plurality of first suction ports 41 are uniformly arranged inside the first peripheral wall portion 42. Further, the first peripheral wall portion 42 is formed in a substantially annular shape according to the shape of the substrate P. The upper surface 42A of the first peripheral wall portion 42 is formed so as to face the edge region of the back surface Pb of the substrate P.
- Each of the first suction ports 41 is connected to the first vacuum system 40 via a flow path 45.
- the first vacuum system 40 is for making the first space 31 surrounded by the base material PHB, the first peripheral wall portion 42, and the back surface of the substrate P a negative pressure, and includes a vacuum pump.
- the first support portion 46 includes the support pin, and the first holding portion PH1 in the present embodiment is a so-called pin chuck mechanism. Make up part.
- the first peripheral wall portion 42 functions as an outer wall portion surrounding the first space 31 including the first support portion 46, and the control device CONT drives the first vacuum system 40, and the base material PHB and the first peripheral wall portion. By sucking gas (air) inside the first space 31 surrounded by the substrate 42 and the substrate P to make the first space 31 a negative pressure, the substrate P is sucked and held by the first support portion 46.
- the second holding part PH2 of the substrate holder PH includes a substantially annular second peripheral wall part 62 formed on the base material PHB so as to surround the first peripheral wall part 42 of the first holding part PH1.
- the second peripheral wall portion 62 is provided outside the first peripheral wall portion 42 with respect to the first space 31, and the third peripheral wall portion 63 is provided further outside the second peripheral wall portion 62.
- the plurality of second support portions 66 are formed uniformly between the second peripheral wall portion 62 and the third peripheral wall portion 63.
- the second support portion 66 includes a plurality of support pins.
- the second suction port 61 is for holding the plate member T by suction. Between the second peripheral wall portion 62 and the third peripheral wall portion 63, the second support port on the upper surface of the base material PHB is provided. It is provided at each of a plurality of predetermined positions other than the part 66.
- a plurality of the second suction ports 61 are uniformly arranged between the second peripheral wall portion 62 and the third peripheral wall portion 63.
- the second peripheral wall portion 62 is formed in a substantially annular shape according to the shape of the hole portion TH of the plate member T.
- the third peripheral wall portion 63 is formed in a substantially rectangular ring shape according to the outer shape of the plate member T.
- the upper surface 62A of the second peripheral wall portion 62 is formed to face the back surface Tb of the plate member T in an inner edge region near the hole TH of the plate member T.
- the upper surface 63A of the third peripheral wall portion 63 is formed to face the back surface Tb of the plate member T in the outer edge region of the plate member T.
- the upper surfaces of the first peripheral wall 42, the second peripheral wall 62, and the third peripheral wall 63 each have a relatively wide width.
- the width is about 1mm.
- Each of the second suction ports 61 is connected to the second vacuum system 60 via the flow path 65.
- the second vacuum system 60 is a second vacuum system surrounded by the base material PHB, the second and third peripheral wall portions 62 and 63, and the plate member T. It is for making the second space 32 a negative pressure and includes a vacuum pump.
- the second support portion 66 includes the support pin, and the second holding portion PH2 in the present embodiment constitutes a part of a so-called pinch mechanism.
- the second and third peripheral wall portions 62 and 63 function as outer wall portions surrounding the second space 32 including the second support portion 66, and the control device CONT drives the second vacuum system 60 to The gas (air) inside the second space 32 surrounded by the PHB, the second and third peripheral wall portions 62 and 63, and the plate member T is suctioned to make the second space 32 a negative pressure, thereby forming the plate portion.
- the material T is suction-held on the second support portion 66.
- a force using a pin chuck mechanism or another chuck mechanism may be used for holding the substrate P by suction.
- a pin chuck mechanism is employed for suction holding of the plate member T, other chuck mechanisms may be employed.
- a vacuum suction mechanism is employed for suction holding of the substrate P and the plate member T, but at least one of them is held using another mechanism such as an electrostatic suction mechanism. It may be.
- a first vacuum system 40 for creating a negative pressure in the first space 31 and a second vacuum system 60 for creating a negative pressure in the second space 32 are independent of each other.
- the control device CONT is capable of individually controlling the operations of the first vacuum system 40 and the second vacuum system 60, and performs a suction operation on the first space 31 by the first vacuum system 40 and a second operation by the second vacuum system 60.
- the suction operation for the two spaces 32 can be performed independently of each other.
- the substrate P can be replaced while the plate member T is held by the second holding portion PH2.
- the control device CONT controls the first vacuum system 40 and the second vacuum system 60, respectively, so that the pressure in the first space 31 and the pressure in the second space 32 can be different from each other.
- the outer edge portion of the substrate P held by the first holding portion PH1 and the inner side of the plate member T provided around the substrate P A gap (gap) A of about 0.1 to 1.0 mm is formed between the edge portion and the edge portion.
- the gap A is about 0.3 mm.
- the liquid LQ By increasing the size by about 2.0 mm, the liquid Even when the liquid immersion area AR2 of the body LQ is formed, the liquid LQ hardly flows into the gear A due to the surface tension of the liquid LQ.
- the liquid LQ can be held under the optical system PL.
- a notch NT which is a notch for alignment, is formed on the substrate P in the present embodiment.
- the gap between the substrate P and the plate member T at the notch portion NT is also 0.1 or more: 1.
- the shape of the plate member T according to the outer shape of the substrate P (the shape of the notch portion NT) is set to about Omm. Is set. That is, a gap A of about 0.1 to: 1. Omm is secured between the entire area of the edge portion of the substrate P including the notch portion NT and the plate member T.
- the plate member T is provided with a projection 150 projecting toward the inside of the hole TH so as to correspond to the shape of the notch NT of the substrate P.
- a convex portion 62N corresponding to the shape of the projection 150 of the plate member T is formed on the second peripheral wall portion 62 and the upper surface 62A of the second holding portion PH2, a convex portion 62N corresponding to the shape of the projection 150 of the plate member T is formed.
- the protrusion 150 has a function as a gap adjusting unit for reducing the gap between the surface Pa of the notch NT of the substrate P held by the first holding unit PH1 and the surface Ta of the plate member.
- the projection 150 is a part of the plate member T and is integrally formed. However, the plate member T and the projection 150 are separately provided, and the projection 150 is formed with respect to the plate member T. It may be replaceable.
- a concave portion 42N corresponding to the shape of the convex portion 62N of the second peripheral wall portion 62 and the notch portion NT of the substrate P is formed. I have.
- the concave portion 42N of the first peripheral wall portion 42 is provided at a position facing the convex portion 62N of the second peripheral wall portion 62, and a predetermined gap is formed between the concave portion 42N and the convex portion 62N.
- each of the plate member 1 ⁇ the first peripheral wall portion 42 and the second peripheral wall portion 62 is formed in a shape corresponding to the outer shape of the substrate P, and a gap is formed between the substrate P and the surrounding plate member T. If you try to secure the predetermined gap A,
- the projection 150 may not be provided on the plate member. In this case, the concave portion 42N and the convex portion 62 N may not be provided.
- the second suction port 61 formed on the base material PHB is provided with a gap between the substrate P held by the first holding part PH1 and the plate member T held by the second holding part PH2. It has a function as a liquid recovery port for collecting the liquid LQ that has entered from A.
- the second holding part PH2 holds the plate member T so that the second space 32 is formed on the back surface Tb side of the plate member T
- the second suction port 61 It has a function of collecting the liquid LQ that is formed on the back surface Tb side of the plate member T held by the part PH2 and that has penetrated from the gap A into the second space 32 on the back surface Tb side of the plate member T.
- FIG. 5 is an enlarged sectional view of a main part of the substrate holder PH holding the substrate P and the plate member T.
- a gap A of about 0.1 to 1. Omm is secured between the side surface Pc of the substrate P and the side surface Tc of the plate member T facing the side surface Pc as described above.
- the upper surface 42A of the first peripheral wall portion 42 and the upper surface 62A of the second peripheral wall portion 62 are flat surfaces.
- the upper surface 63A of the third peripheral wall 63 is also a flat surface.
- the first support portion 46 is formed at the same height as the first peripheral wall portion 42 or slightly higher than the first peripheral wall portion 42. . That is, in the first holding portion PH1, the position of the upper surface 46A of the first support portion 46 in the Z-axis direction is the same force as the position of the upper surface 42A of the first peripheral wall portion 42 in the Z-axis direction, or the first peripheral wall portion.
- the upper surface of 42 is slightly higher than the position of 42 A in the Z-axis direction. This allows the back surface Pb of the substrate P and the upper surface 42A of the first peripheral wall portion 42 to be in close contact with each other when the first space 31 has a negative pressure.
- the back surface Pb of the substrate P is supported on the upper surface 46A of the first support portion 46. Because the back surface Pb of the substrate P and the upper surface 42A of the first peripheral wall portion 42 are in close contact with each other, even if the liquid LQ enters the rear surface Pb side of the substrate P from the gap A, the rear surface Pb of the substrate P and the first peripheral wall portion The liquid LQ can be prevented from entering the first space 31 via the space between the upper surface 42A and the upper surface 42A.
- the second support part 66 is formed slightly higher than the second peripheral wall part 62.
- the second peripheral wall portion 62 of the second holding portion PH2 is formed lower than the second support portion 66. That is, of the second holding portion PH2, the position of the upper surface 66A of the second support portion 66 in the Z-axis direction is slightly smaller than the position of the upper surface 62A of the second peripheral wall portion 62 in the Z-axis direction. Even when the plate member T is suction-held on the second support portion 66 by setting the raised second space 32 to a negative pressure, the space between the back surface Tb of the plate member T and the upper surface 62A of the second peripheral wall portion 62 is maintained.
- the gap B is 50 / im or less, which is smaller than the gap A, for example, about several zm (for example, 3 xm).
- the force third peripheral wall portion 63 (not shown in FIG. 5) is formed to be slightly lower than the second support portion 66 or to be substantially the same height as the second support portion 66.
- the height of the second support portion 66 and the height of the second peripheral wall portion 62 can be determined so that the back surface Tb of the plate member T and the upper surface 62A of the second peripheral wall portion 62 are in close contact with each other. Further, the height of the second support portion 66 and the height of the third peripheral wall portion 63 are determined so that a very small gap is formed between the back surface Tb of the plate member T and the upper surface 63A of the third peripheral wall portion 63. You can also.
- a gap C is formed between the first peripheral wall 42 and the second peripheral wall 62.
- the outer diameter of the annular first peripheral wall portion 42 (first holding portion PH1) is formed smaller than the outer diameter of the substrate P. Therefore, the peripheral portion of the substrate P is overhanged outside the first peripheral wall portion 42 by, for example, about 0.5 to 1.5 mm, and the gap C is larger than the gap A, for example, about 1.5 to 2.5 mm. It is.
- the thickness Dp of the substrate P and the thickness Dt of the plate member T are substantially the same.
- the upper surface 42A of the first peripheral wall portion 42, the upper surface 46A of the first support portion 46, the upper surface 66A of the second support portion 66, the upper surface 62A of the second peripheral wall portion 62, and the upper surface 63A of the third peripheral wall portion 63. Are almost the same height, although there is a slight difference in height.
- the surface Pa of the substrate P held by the first holding part PH1 and the plate member held by the second holding part PH2 The surface of T is almost flush with Ta.
- the plate member T in the present embodiment is formed of quartz (glass). Then, as shown in FIG. 4, reference marks MFM and PFM for defining the position of the substrate P with respect to the pattern image of the mask M via the projection optical system PL are provided at predetermined positions on the surface Ta of the plate member T.
- the reference section 300 provided is provided. These reference marks PFM and MFM are formed on a plate member T made of quartz by using a predetermined material such as chromium. It is formed in a positional relationship.
- the fiducial mark PFM is detected by the substrate alignment system 95, and the fiducial mark MFM is detected by the mask alignment system 96. Either the reference mark MFM or the reference mark PFM may be used.
- a reference plate 400 used as a reference surface of the focus leveling detection system is provided.
- the upper surface of the reference portion 300 and the upper surface of the reference plate 400 are substantially flush with the surface Pa of the substrate P held by the first holding portion PH1.
- the surface (flat portion) Ta, the back surface Tb, and the side surface Tc of the plate member T made of quartz are coated with a liquid-repellent material.
- the liquid-repellent material is also coated on the reference portion 300 and the reference plate 400 having the reference marks MFM and PFM, and the upper surface of the reference portion 300 and the upper surface of the reference plate 400 are also liquid-repellent.
- the liquid-repellent material include a fluorine resin material such as polytetrafluoroethylene or an acrylic resin material.
- “CYTOP” manufactured by Asahi Glass Co., Ltd. is coated on the plate member T made of quartz.
- a thin film made of the above lyophobic material may be attached to the plate member T.
- a material that is insoluble in the liquid LQ is used as a liquid-repellent material for making the liquid-repellent.
- the plate member T itself may be formed of a liquid-repellent material (such as a fluorine-based material).
- the plate member T may be formed of stainless steel or the like, and at least a part of the front surface Ta, the back surface Tb, and the side surface Tc may be subjected to a liquid repellent treatment.
- an opening may be provided at a predetermined position of the plate member T, and the upper surface of the optical sensor may be exposed from the opening.
- an optical sensor for example, an illuminance unevenness sensor as disclosed in JP-A-57-117238 and JP-A-2002-14005 (corresponding to U.S. Patent Publication 2002/0041377) are disclosed.
- the upper surface of the optical sensor also has a surface Ta of the plate member T and a surface Pa of the substrate P. Almost flush.
- the upper surfaces of these optical sensors are also coated with a liquid-repellent material to make them liquid-repellent.
- a photoresist (photosensitive material) is applied to a surface Pa, which is an exposed surface of the substrate P.
- the photosensitive material is a photosensitive material for an ArF excimer laser and has liquid repellency (water repellency, contact angle of 80 ° to 85 °).
- the side surface Pc of the substrate P is subjected to a liquid repellent treatment (water repellent treatment).
- the photosensitive material having liquid repellency is also applied to the side surface Pc of the substrate P. This makes it possible to more reliably prevent the liquid LQ from entering the gap A between the plate member T having the liquid repellent surface Ta and the side surface Pc of the substrate P.
- the photosensitive material is also applied to the back surface Pb of the substrate P and subjected to a liquid repellent treatment.
- the material for making the back surface Pb and the side surface Pc of the substrate P lyophobic is not limited to the above photosensitive material, but may be a predetermined lyophobic material.
- a protective layer called a top coat layer (a film that protects the photosensitive material from a liquid) may be applied to the upper layer of the photosensitive material applied to the surface Pa, which is the exposed surface of the substrate P.
- the top coat layer forming material may be applied to the side surface Pc or the back surface Pb of the substrate P. Good.
- a material having liquid repellency other than the photosensitive material and the material for forming the top coat layer may be applied.
- the surface Pa of the substrate P is not necessarily required to be lyophobic.
- a resist having a contact angle of about 60 ° to 80 ° with the liquid LQ can also be used.
- the liquid repellency treatment is not essential for the side surface Pc and the back surface Pb of the substrate P. That is, the front surface Pa, the back surface Pb, and the side surface Pc of the substrate P may not be liquid-repellent, and if necessary, at least one of them may be liquid-repellent.
- the surface of the base material PHB of the substrate holder PH is also subjected to a liquid repelling treatment so as to be liquid repellent.
- the upper surface 42A of the first peripheral wall portion 42 of the first holding portion PH1, the upper surface 46A of the first support portion 46, and the side surface (the surface facing the second peripheral wall portion 62) ) 42B has liquid repellency.
- the upper surface 62A of the second peripheral wall portion 62 of the second holding portion PH2, the upper surface 66A of the second support portion 66, and the side surface (the surface facing the first peripheral wall portion 42) 62B have liquid repellency.
- the lyophobic treatment of the substrate holder PH is performed by applying a lyophobic material such as a fluorine-based resin material or an acrylic resin material as described above, or A process of attaching a thin film made of a liquid-repellent material is included.
- a lyophobic material such as a fluorine-based resin material or an acrylic resin material as described above, or A process of attaching a thin film made of a liquid-repellent material is included.
- the entire base material PHB including the first peripheral wall portion 42 and the second peripheral wall portion 62 of the substrate holder PH may be formed of a material having liquid repellency (such as a fluorine-based resin).
- the photosensitive material and the top coat layer forming material may be applied.
- the material used for the lyophobic treatment of the substrate holder PH may be applied to the back surface Pb and the side surface Pc of the substrate P.
- any surface region of the base material PHB may not be lyophobic.
- the base material PHB is provided with a hole 56H for disposing the first elevating member 56 for moving the substrate P up and down with respect to the base material PHB.
- the holes 56H are provided at three locations inside the first peripheral wall portion 42 (that is, inside the first space 31) (see FIG. 3).
- the control device CONT controls the elevating operation of the first elevating member 56 via a driving device (not shown).
- the base material PHB is provided with a hole 57H for disposing a second elevating member 57 for elevating and lowering the plate member T with respect to the base material PHB.
- the holes 57H are provided at four locations between the second peripheral wall 62 and the third peripheral wall 63 (that is, inside the second space 32) (see FIG. 3).
- the control device CONT controls the raising / lowering operation of the second lifting / lowering member 57 via a driving device (not shown).
- the first elevating member 56 can be raised while holding the back surface Pb of the substrate P. Since the first lifting member 56 rises while holding the back surface Pb of the substrate P, the substrate 3 and the first holding part PH1 can be separated. Similarly, the second elevating member 57 can ascend while holding the back surface Tb of the plate member T.
- the plate member T is a member different from the base material PHB and is detachably attached to the base material PHB of the substrate holder PH. By holding and raising the back surface Tb of T, the plate member T and the second holding member PH2 can be separated.
- the control device CONT When replacing the plate member T, the control device CONT releases the suction holding of the plate member T by the second holding unit PH2, and then raises the second lifting member 57.
- the second elevating member 57 ascends while holding the back surface Tb of the plate member T. Then, there is no gap between the plate member T raised by the second lifting member 57 and the base material PHB of the substrate holder PH.
- the illustrated transfer arm enters and supports the back surface Tb of the plate member T. Then, the transport arm unloads the plate member T from the base material PHB (second holding unit PH2) of the substrate holder PH.
- the control device CONT places the new plate member T on the base material PHB of the substrate holder PH using the transfer arm. Bring in. At this time, the second elevating member 57 is raised, and the transfer arm passes the plate member T to the ascending second elevating member 57. The second elevating member 57 descends while holding the plate member T passed from the transport arm. After descending the second elevating member 57 and placing the plate member T on the second holding part PH2, the control device CONT drives the second vacuum system 60 to make the second space 32 a negative pressure. Thereby, the plate member T is suction-held by the second holding portion PH2.
- a mechanical reference may be provided to at least one of the base material PHB and the plate member T, and the mechanical reference may be used.
- a dedicated alignment sensor may be provided, and the sensor may be used.
- a mark is provided on each of the base material PHB and the plate member T, each mark is optically detected, and the relative position between the base material PHB and the plate member T is adjusted based on the detection result.
- the plate member T can be suction-held at a predetermined position of the base material PHB.
- the controller CONT When unloading the exposed substrate P, the controller CONT lifts the first elevating member 56 after releasing the holding of the substrate P by the first holding unit PH1. The first elevating member 56 moves up while holding the back surface Pb of the substrate P. Then, a transfer arm (not shown) enters between the substrate P raised by the first lifting member 56 and the base material PHB of the substrate holder PH, and holds the back surface Pb of the substrate P. Then, the transfer arm unloads (unloads) the substrate P from the base material PHB (first holding unit PH1) of the substrate holder PH.
- the controller CONT uses the transfer arm to transfer the new substrate P to the substrate holder PH.
- the substrate is loaded (loaded) onto PHB.
- the first elevating member 56 is up, and the transfer arm passes the substrate P to the ascending first elevating member 56.
- the first elevating member 56 descends while holding the substrate P delivered from the transport arm.
- the first lifting member 56 is lowered, and the substrate P 1
- the control device CONT drives the first vacuum system 40 and makes the first space 31 have a negative pressure. As a result, the substrate P is suction-held by the first holding unit PH1.
- the control device CONT can perform the suction operation of the first vacuum system 40 and the suction operation of the second vacuum system 60 independently, so that the substrate P can be loaded and unloaded.
- the suction holding and releasing operation of the first holding unit PH1 and the suction holding and releasing operation of the second holding unit PH2 accompanying the loading and unloading of the plate member T are performed independently and at different timings. It can be carried out.
- the second elevating member 57 is provided in order to attach and detach the plate member T to and from the base material PHB, so that the work of replacing the plate member T (unloading operation) can be performed smoothly. it can.
- the plate member T is configured to be automatically exchanged by using the second elevating mechanism 57, but the second elevating mechanism 57 can be omitted. In this case, the replacement of the plate member T is performed by an operator or the like in a state where the suction of the plate member T is released.
- the imaging characteristics of the projection optical system PL via the liquid LQ are measured using the optical sensor on the substrate stage PST as described above, and based on the measurement results. Then, the image forming characteristic adjustment (calibration) processing of the projection optical system PL is performed. Further, the positional relationship (baseline amount) between the detection reference position of the substrate alignment system 95 and the projection position of the pattern image is measured using the substrate alignment system 95 and the mask alignment system 96.
- the exposure apparatus EX of the present embodiment projects and exposes the pattern image of the mask M to the substrate P while moving the mask M and the substrate P in the X-axis direction (scanning direction).
- a partial pattern image of the mask M is projected into the projection area AR1 via the liquid LQ in the immersion area AR2 and the projection optical system PL, and the mask M is moved in the ⁇ X direction (or + X direction).
- the substrate P moves in the + X direction (or -X direction) with respect to the projection area AR1 at a speed ⁇ ⁇ (/ 3 is a projection magnification) in synchronization with the movement at the speed V.
- the shot areas S1 to S24 are arranged in a matrix.After the exposure of one shot area is completed, the next shot area is moved to the acceleration start position by the stepping movement of the substrate P. Scanning exposure processing is sequentially performed on each of the shot areas S1 to S24 while moving the substrate P by the scanning method.
- the control device CONT sets the plurality of alignment marks AM formed on the substrate P to the substrate P.
- detection is performed sequentially without passing through a liquid (step SA1).
- the position of the substrate stage PST (substrate holder PH) when the substrate alignment system 95 detects the alignment mark AM is measured by the laser interferometer 94.
- the position information of each alignment mark AM in the coordinate system defined by the laser interferometer 94 is measured.
- the detection result of the position information of the alignment mark AM detected using the substrate alignment system 95 and the laser interferometer 94 is output to the control device CONT.
- the substrate alignment system 95 has a detection reference position in a coordinate system defined by the laser interferometer 94, and the position information of the alignment mark AM is defined as a deviation from the detection reference position. Is detected.
- the control device CONT obtains position information of each of the plurality of shot areas S1 to S24 on the substrate P by arithmetic processing (EGA processing) based on the detection result of the position information of the alignment mark AM.
- EGA processing arithmetic processing
- the position information of the shot areas S1 to S24 is obtained by a so-called EGA (Enhanced 'Global' alignment) method as disclosed in Japanese Patent Application Laid-Open No. 61-44429.
- the control device CONT moves the substrate stage PST, and moves the liquid immersion area AR2 formed on the image plane side of the projection optical system PL onto the substrate P. Thereby, an immersion area AR2 is formed between the projection optical system PL and the substrate P. Then, after forming the liquid immersion area AR2 on the substrate P, each of the plurality of shot areas of the substrate P is sequentially projected with a pattern image and subjected to liquid immersion exposure (step SA3). More specifically, the position information of each shot area S1 to S24 obtained in step S A2, and the position between the detection reference position of the substrate alignment system 95 and the projection position of the pattern image stored in the control device CONT. Based on the relationship (baseline amount), the substrate stage PST is moved, and each shot area S1 on the substrate P is moved. The liquid immersion exposure processing of each shot area is performed while aligning .about.S24 with the pattern image.
- the control device CONT maintains the liquid LQ on the image plane side of the projection optical system PL or the image plane side of the projection optical system PL. After collecting the liquid LQ, the exposed substrate P is unloaded from the substrate stage PST, and the unprocessed substrate is loaded on the substrate stage PST (step SA4).
- the reference mark MFM of the reference section 300 is set via the liquid LQ.
- a part or all of the liquid immersion area AR2 of the liquid LQ is formed on the surface Ta of the plate member T.
- the liquid LQ is applied to the surface Ta of the plate member T when the measurement is performed via the liquid LQ using the optical sensor. Part or all of the liquid immersion area AR2 is formed.
- the liquid LQ can be satisfactorily recovered using the liquid recovery mechanism 20, and the liquid LQ remains on the plate member T. Can be suppressed.
- the liquid LQ remains on the plate member T, for example, the plate member T is deformed or the environment (temperature and humidity) where the substrate P is placed fluctuates due to vaporization of the remaining liquid LQ, and the substrate P Exposure accuracy is degraded due to fluctuations in the optical paths of various measurement lights for measuring position information and the like. Further, after the remaining liquid is vaporized, a trace of adhesion of the liquid (a so-called water mark) is formed on the plate member T, which may cause contamination of the reference portion 300 and the like.
- the liquid LQ is prevented from remaining on the plate member T, it is possible to prevent the exposure accuracy and the measurement accuracy from being deteriorated due to the remaining liquid LQ.
- a force S in which a part of the liquid immersion area AR2 formed on the substrate is formed on the plate member T Is substantially flush with the surface Ta of the plate member T, and there is almost no step between the edge of the substrate P and the surface Ta of the plate member T provided therearound.
- the shape of the liquid immersion area AR2 can be maintained well, and the occurrence of inconveniences such as the outflow of the liquid LQ in the liquid immersion area AR2 or the incorporation of bubbles into the liquid LQ of the liquid immersion area AR2 can be suppressed.
- the gap A is set to a predetermined value or less, and in the present embodiment is set to about 0.1 to about 1.0 mm, and the surface Pa of the substrate P and the plate member T
- the surface Ta is lyophobic and the side surface Pc of the substrate P forming the gap A and the side surface Tc of the plate member T are lyophobic.
- the gap A between the substrate P and the plate member T is ensured even at the notch portion (notch portion) NT of the substrate P, so that the liquid from the vicinity of the notch portion NT is secured. LQ penetration is also prevented.
- the back surface Tb of the plate member T is lyophobic, and Since the upper surface 62A of the second peripheral wall portion 62 facing the Tb is also liquid repellent, the liquid LQ is prevented from entering the second space 32 via the gap B. Therefore, it is possible to prevent the liquid LQ from entering the second vacuum system 60 via the second suction port 61 inside the second space 32. Further, since the back surface Pb of the substrate P and the upper surface 42A of the first peripheral wall portion 42 facing the back surface Pb are in close contact with each other, the liquid LQ is prevented from entering the first space 31. Therefore, the liquid LQ is prevented from entering the first vacuum system 40 via the first suction port 41 inside the first space 31.
- the control device CONT determines the lyophobic property of the plate member T (surface Ta).
- the plate member T having the surface Ta whose lyophobic property has deteriorated is replaced with a new (sufficiently lyophobic) plate member T in accordance with the degree of deterioration of the plate member T, so that the plate member T and the base member are replaced. It is possible to prevent inconvenience such as intrusion of the liquid LQ from the gap with the P and retention of the liquid LQ on the plate member T.
- the plate member can be replaced at a predetermined interval, for example, at a predetermined number of substrates to be processed or at a predetermined time interval.
- the relationship between the irradiation amount (irradiation time, illuminance) of the exposure light EL and the lyophobic level of the plate member ⁇ is obtained in advance by experiments or simulations, and the plate member ⁇ is replaced based on the obtained result. Timing may be set. The replacement timing of the plate member ⁇ is determined according to the deterioration of the liquid repellency of the surface of the plate member. The evaluation of the deterioration of liquid repellency is performed, for example, by observing the surface with a microscope or visually, hanging the droplet on the evaluation surface and observing the state of the droplet visually or with a microscope, or measuring the contact angle of the droplet.
- the controller CONT can determine the force S.
- the plate member ⁇ forming the upper surface of the substrate holder ⁇ is suction-held by the second holding portion ⁇ 2, for example, the plate member ⁇ and the base material ⁇ are connected using bolts or the like.
- the deformation of the plate member (substrate) can be suppressed, and the flatness of the plate member (substrate) and substrate (substrate) can be favorably maintained.
- the upper surface 62 2 ⁇ of the 62 and the upper surface 63 ⁇ of the third peripheral wall 63 have almost the same height, albeit with a slight difference in height.
- the plate member ⁇ ⁇ for forming the upper surface of the substrate holder ⁇ is configured to be detachable from the second holding portion ⁇ 2. Therefore, as shown in the schematic diagram of FIG.
- the upper surfaces 42 ⁇ , 46 ⁇ , 62 ⁇ , 63 ⁇ , and 66 ⁇ ⁇ are subjected to a predetermined treatment such as polishing
- the upper surfaces 42 ⁇ , 46 ⁇ , 62 ⁇ , 63 ⁇ and 66 ⁇ can be processed with good workability.
- the polishing process can be smoothly performed on the upper surface of the second holding portion # 2. Since the holding part PH1 is concave with respect to the second holding part # 2, the upper surface of the first holding part PH1 is polished. It is not easy.
- the upper surface of the first holding portion PH1 and the upper surface of the second holding portion PH2 are substantially the same height, the upper surface of the first holding portion PH1 and the upper surface of the second holding portion PH2 are respectively provided.
- the above processing can be performed smoothly.
- the polishing process can be performed almost simultaneously on each of the upper surface of the first holding unit PH1 and the upper surface of the second holding unit PH2, so that the work can be performed with good workability.
- the entire surface of the front surface Ta, the side surface Tc, and the back surface Tb of the plate member T is coated with the lyophobic material for the lyophobic treatment.
- Tb can be selectively made lyophobic as needed.
- the region forming the gap A that is, the side surface Tc of the plate member T and the region forming the gap B, that is, the region of the back surface Tb of the plate member T facing the upper surface 62A of the second peripheral wall portion 62 Only the liquid repellent treatment may be performed.
- the liquid repellent treatment may be performed only on the side surface Tc of the plate member T without performing the liquid repellent treatment on the back surface Tb of the plate member T forming the gap B.
- the gap A between the substrate P temporarily held by the first holding part PH1 and the plate member T held by the second holding part PH2 The height of the second peripheral wall portion 62 and the second support portion 66 of the second holding portion PH2 so that when the liquid LQ enters, the liquid LQ force that has entered from the gap A is drawn toward the back surface Tb side of the plate member T. Is set. In other words, the liquid LQ force penetrating from the gap A, the second holding port is drawn into the back surface Tb side of the plate member T by the suction operation of the second suction port 61 formed on the back surface Tb side of the plate member.
- a gap B is set between the upper surface 62A of the second peripheral wall portion 62 of the portion PH2 and the back surface Tb of the plate member T sucked and held by the second support portion 66. Further, the liquid LQ force penetrating from the gap A is applied to the second support portion 66 so as to be drawn into the back surface Tb side of the plate member T by the suction operation of the second suction port 61 formed on the back surface Tb side of the plate member T.
- the gap F between the back surface Tb of the supported plate member T and the top surface of the base material PHB facing the back surface Tb is set optimally. In the present embodiment, the gap F is about 50 ⁇ m.
- the back surface Pb of the substrate ⁇ and the first peripheral wall portion 42 Since the upper surface 42A is in close contact with the upper surface 62A of the plate member T and the upper surface 62A of the second peripheral wall portion 62 when the gas in the second space 32 is sucked through the second suction port 61.
- the gap B a directional airflow is generated from the space outside the second peripheral wall portion 62 to the second space 32.
- the liquid LQ in the liquid immersion area AR2 enters the gap A, the liquid LQ that has entered does not sneak to the back surface Pb side of the substrate P, but passes through the back surface T of the plate member T via the gap B. It flows into the second space 32 formed on the b side and is collected from the second suction port 61 formed on the back surface Tb side of the plate member T.
- the gap B is formed continuously outside the substrate P so as to surround the substrate P along the edge of the substrate P. Therefore, even if the liquid LQ penetrates from the position of the gap A including the vicinity of the notch portion (notch portion) NT of the substrate P or the position of the gap, the liquid LQ is transferred to the second outside of the substrate P via the gap B. It can flow into the space 32 and be collected smoothly from the second suction port 61.
- the entered liquid LQ does not go around (does not flow into) the rear surface Pb side of the substrate P, and the plate L Since the liquid LQ is drawn to the back surface Tb side, it is possible to prevent inconvenience such as deterioration of the flatness of the substrate P due to the liquid LQ wrapping around the back surface Pb side of the substrate P.
- the second suction port 61 for sucking and holding the plate member T and the liquid recovery port for recovering the liquid LQ penetrating from the gap A are also used.
- the second holding part PH2 is configured to suck and hold the plate member T at least during exposure of the substrate P. Therefore, the second suction port (liquid recovery port) 61 is configured to always recover the liquid LQ that has entered from the gap A at least during the exposure of the substrate P. Therefore, it is possible to reliably prevent the liquid LQ that has entered from the gap A from flowing around to the back surface Pb side of the substrate P.
- the liquid LQ penetrates into the back surface Pb side of the substrate P, the substrate P and the first holding part PH1 are adsorbed by the liquid LQ, and there is a possibility that the first lifting member 56 may not be able to raise the substrate P smoothly.
- the liquid LQ on the back side Pb side of the substrate P Prevention of such inconvenience can be prevented by preventing intrusion.
- a porous body 68 is arranged in the middle of a flow path 65 connected to the second suction port 61.
- the liquid LQ collected through the second suction port 61 and flowing through the flow path 65 is captured by the porous body 68.
- the inconvenience of the liquid LQ flowing into the second vacuum system 60 can be prevented.
- the liquid LQ captured by the porous body 68 is vaporized in the flow path 65.
- the amount of the liquid LQ collected through the second suction port 61 is very small, and the liquid LQ captured by the porous body 68 can be agitated in the flow path 65.
- a mesh member may be arranged in the flow path 65 instead of the porous body 68.
- a gas-liquid separator for separating the gas LQ and the liquid LQ recovered from the second suction port 61 is provided in the middle of the flow path 65 connecting the second suction port 61 and the second vacuum system 60.
- a buffer space larger than the other regions is provided in a predetermined area in the middle of the flow path 65, and the liquid LQ is captured in this buffer space so as to prevent the liquid LQ from flowing into the second vacuum system 60. Is also good.
- the back surface Pb of the substrate P and the upper surface 42A of the first peripheral wall portion 42 are kept in close contact with each other, that is, the lower surface Pb of the substrate P and the upper surface 42A of the first peripheral wall portion 42
- the gap D between them By making the gap D between them almost zero, the liquid LQ force penetrating from the gap A penetrates into the first space 31 side between the back surface Pb of the substrate P and the upper surface 42A of the first peripheral wall portion 42. Can be prevented more reliably.
- a gap D is formed between the back surface Pb of the substrate P and the upper surface 42A of the first peripheral wall portion 42, the suction force of the liquid LQ to the gap B is larger than the suction force of the liquid LQ to the gap D.
- the liquid LQ penetrating from the gap A is applied to the back surface Tb side of the plate member T. It is possible to smoothly draw in the liquid LQ and prevent the liquid LQ that has entered from the gap A from flowing to the back surface Pb side of the substrate P.
- the second suction port 61 is provided between the second peripheral wall 62 and the third peripheral wall 63 on the upper surface of the base material PHB (the surface facing the rear surface Tb of the plate member T). ) A plurality of second suction ports 61 of the plurality of second suction ports 61 are partially formed, for example, between the second peripheral wall 62 and the third peripheral wall 63. A plurality of slits may be formed along the second peripheral wall 62 near the second peripheral wall 62 on the upper surface of the material PHB. do this Thereby, the liquid LQ flowing into the second space 32 via the gap B can be more smoothly collected.
- the second peripheral wall portion 62 is formed in an annular shape in plan view, and the gap B is a force S continuously formed so as to surround the substrate P. By making the height of the portion 62 partially different, the gap B may be formed discontinuously.
- the second space 32 for holding the plate member T by suction is formed by forming the second peripheral wall portion 62 and the third peripheral wall portion 63 on the base material PHB.
- the plate member T may be held on a plurality of convex members (pin-like members) arranged outside the portion.
- the suction port for the liquid LQ outside the annular peripheral wall portion the liquid LQ that has entered through the gap A can be recovered by suction suction.
- the liquid LQ penetrating from the gap A can flow around the back surface Pb side of the substrate P.
- the force S can be suctioned and collected through the suction port provided on the back surface Tb side of the plate member T to be connected.
- the plate member T and the substrate holder PH are separable, but the plate member T and the substrate holder PH may be formed integrally.
- the gap B can be easily formed. The process for making the upper surface 62A of the second peripheral wall portion 62, the second support portion 66, and the like lyophobic can be performed smoothly.
- the thickness of the substrate P and the thickness of the plate member T are substantially the same, and the positions of the gap B and the gap D in the Z-axis direction are substantially the same. May be in different positions.
- the position of the gap B in the Z-axis direction may be higher than the gap D.
- the liquid LQ penetrating from the gap A reaches the back side of the substrate P (gap D) and then flows from the second suction port 61 through the gap B.
- the liquid LQ can be more reliably prevented from entering the first space 31 on the back surface Pb side of the substrate P.
- the upper surface 62A of the second peripheral wall portion 62 and the rear surface Tb of the plate member T facing the upper surface 62A are substantially parallel to the XY plane (ie, horizontal plane). It may be inclined with respect to the XY plane while securing B.
- the back surface Tb of the plate member T and the entire upper surface 62A of the second peripheral wall portion 62 face each other. By making it slightly smaller than TH or increasing the width of the upper surface 62A, a part of the upper surface 62A of the second peripheral wall portion 62 may face the gap A (or the back surface Pb of the substrate P). Les ,.
- a force in which a concave portion is formed between the first peripheral wall portion 42 and the second peripheral wall portion 62 to form a gap C the first peripheral wall portion 42 and the second peripheral wall portion 62 May be continuous. That is, a single wide peripheral wall may be provided in place of the first peripheral wall 42 and the second peripheral wall 62.
- the negative pressure in the second space and the negative pressure in the first space may be made different from each other so that the liquid LQ penetrating from the gap A is drawn into the gap B, or the upper surface of the wide peripheral wall may be connected to the substrate.
- a step or inclination is provided on the upper surface of the peripheral wall so that the gap B 'between the rear surface Pb of P and the upper surface of the peripheral wall and the rear surface Tb of the plate member T are different from each other. Is also good.
- the liquid immersion exposure apparatus that projects the pattern image of the mask M onto the substrate P via the liquid LQ
- the present invention to a normal dry exposure apparatus that projects the pattern image of the mask M onto the substrate P.
- the plate member T forming the upper surface of the substrate stage PST is adsorbed and held by the second holding part PH2 and is detachable (replaceable) from the base material PHB. When (impurity) is attached, contaminated, or damaged, it can be replaced smoothly with a new plate member.
- the upper surface of the base material PHB between the second peripheral wall portion 62 and the third peripheral wall portion 63 has a substantially annular intermediate portion in plan view provided so as to surround the second peripheral wall portion 62.
- a peripheral wall 162 is provided.
- the intermediate peripheral wall portion 162 is formed to be slightly lower than the second support portion 66 or substantially at the same height as the second support portion 66, and the upper surface 162A of the intermediate peripheral wall portion 162 and the plate member T are formed. It is almost in close contact with the back surface Tb.
- the second space 32 is formed by the base material PHB, the intermediate peripheral wall portion 162, the third peripheral wall portion 63, and the plate member T.
- the second suction port 61 connected to the second vacuum system 60 via the flow path 65 is connected to the upper surface of the base material PH B corresponding to the second space 32 (between the intermediate peripheral wall portion 162 and the third peripheral wall portion 63). On the upper surface of the substrate PHB).
- the second vacuum system 60 sucks the gas in the second space 32 from the second suction port 61 and makes the second space 32 have a negative pressure, thereby sucking and holding the plate member T.
- a space 167 different from the second space 32 is formed by the base material PHB, the second peripheral wall portion 62, the intermediate peripheral wall portion 162, and the plate member T.
- a liquid recovery port 161 for recovering the liquid LQ penetrating from the gap A is provided on the upper surface of the base material PHB between the second peripheral wall portion 62 and the intermediate peripheral wall portion 162.
- the liquid recovery port 161 is formed in a plurality of slits along the second peripheral wall 62 near the second peripheral wall 62 on the upper surface of the base material PHB between the second peripheral wall 62 and the intermediate peripheral wall 162. ing.
- the liquid recovery port 161 is connected to a recovery vacuum system 160 via a flow path 165.
- the controller CONT can independently control the operations of the first vacuum system 40, the second vacuum system 60, and the recovery vacuum system 160.
- a second support portion 66 that supports the back surface Tb of the plate member T is provided between the second peripheral wall portion 62 and the intermediate peripheral wall portion 162.
- the second support portion 66 between the second peripheral wall portion 62 and the intermediate peripheral wall portion 162 may not be provided.
- the upper surface 162A of the intermediate peripheral wall portion 162 may be made liquid-repellent similarly to the upper surface 62A of the second peripheral wall portion 62.
- a minute gap may be formed between the upper surface 162A of the intermediate peripheral wall portion 162 and the rear surface Tb of the plate member T.
- the control device C ⁇ NT drives the first and second vacuum systems 40 and 60 for a predetermined period including during the exposure of the substrate P, and the first and second spaces 31 and The substrate P and the plate member T are suction-held by the first and second holding parts PH1 and PH2, respectively, by setting the pressure at 32 to the negative pressure.
- the controller CONT operates the recovery vacuum. Stop driving the system 160.
- the liquid LQ may accumulate on the gap A or inside the gap A. Further, the liquid LQ that has entered through the gap A may accumulate in the space 168 between the first peripheral wall 42 and the second peripheral wall 62.
- the control device CONT replaces the exposed substrate P with a new substrate P as described with reference to FIG.
- the controller CONT starts driving the recovery vacuum system 160, and sucks and recovers the liquid LQ accumulated in the space 168 and the like via the gap B and the liquid recovery port 161. (This operation follows step SA3 in FIG. 7). The drive of the recovery vacuum system 160 may be continued during the replacement of the substrate P.
- the flow path 165 connecting the liquid recovery port 161 and the recovery vacuum system 160 is provided with the above-described gas-liquid separator and the like, so that the liquid LQ is recovered through the liquid recovery port 161. Even so, the liquid LQ is prevented from flowing into the recovery vacuum system 160.
- the substrate During the exposure of P 2 the recovery vacuum system 160 may be driven.
- the second vacuum system 60 applies a negative pressure to the second space 32 and the collection vacuum system 160 applies a negative pressure to the space 167.
- S can absorb and hold T more stably.
- the liquid LQ penetrating from the gap A during the exposure of the substrate P is removed from the gap B and the liquid recovery port 16. Since the liquid LQ can be satisfactorily recovered through the first substrate 1, it is possible to more reliably prevent the liquid LQ from entering the first space 31 on the back surface Pb side of the substrate P.
- the amount of suction (suction force) from the liquid recovery port 161 during the exposure of the substrate P is made smaller than the amount of suction (suction force) from the liquid recovery port 161 after the exposure of the substrate P, and
- the effect of the vibration caused by driving the vacuum system 180 on the exposure and the fluctuation of the liquid immersion area AR2 during the exposure are not problems.
- the gap B formed between the upper surface 62A of the second peripheral wall portion 62 of the second holding portion PH2 and the rear surface Tb of the plate member T is
- the suction port (61, 161) is used as a recovery port (recovery nozzle) for recovering the liquid LQ that has entered from the gap A via the suction port (61, 161) formed inside the second peripheral wall portion 62. It can also perform the function of adjusting the amount of liquid collected. Therefore, it is desirable to set the size of the gap B optimally so that the amount of the liquid LQ entering from the gap A does not increase and the state of the liquid immersion area AR2 does not fluctuate.
- FIG. 11 is a diagram showing the third embodiment. Note that the description of the configurations and modifications common to the first and second embodiments will be simplified or omitted.
- the plate member T held by the second holding portion PH2 has a surface Ta (first surface) substantially flush with the surface Pa of the substrate P held by the first holding portion PH1, and a side surface of the substrate P.
- an opposing surface (second surface) Tj an opposing surface (second surface) Tj.
- the surface Ta of the plate member T is formed so as to surround the surface Pa of the substrate P.
- the opposing surface Tj of the plate member T is formed in an annular shape along the peripheral edge of the substrate P. That is, the plate member T held by the second holding portion PH2 forms a surface Ta and a facing surface Tj along the periphery of the substrate P held by the first holding portion PH1. Also in this embodiment, a gap A is formed between the edge of the surface Pa of the substrate P and the edge of the surface Ta of the plate member T, and the gap A is 0 :! I have.
- the receiving surface Tg is lower than the gap A (the back surface Pb of the substrate P) between the substrate P and the plate member T. It is provided in one. Further, the facing surface Tj is provided at a position (+ Z side) higher than the receiving surface Tg in the Z-axis direction. Then, a concave portion 170 that can hold the liquid LQ is formed by the inner side surface Th connected to the side surface Tc, the receiving surface Tg, and the opposing surface Tj, and facing the side surface Tc. The concave portion 170 can hold the liquid LQ that has entered from the gap A.
- the liquid LQ penetrated from the gap A between the edge of the surface Pa of the substrate P and the edge of the surface Ta of the plate member T was formed by the side surface Pc of the substrate P, the side surface Tc of the plate member T, and the receiving surface Tg. It is held in the space 173.
- the back surface Pb of the substrate P held by the first holding portion PH1 is not in contact with the opposing surface Tj of the plate member T held by the second holding portion PH2, and the back surface Pb of the substrate P
- a predetermined gap G is formed between the plate member and the opposing surface Tj.
- the gap G between the back surface Pb of the substrate P held by the first holding part PH1 and the opposing surface of the plate member T held by the second holding part PH2 is set so that the liquid LQ does not enter. Have been.
- the gap G is set to about 50 / im. This prevents the liquid LQ from leaking to the outside of the space 173 (the back surface Pb side of the substrate P) via the gap G even when the liquid LQ enters from the gear A.
- the front surface Ta, the rear surface Tb, and the side surface Tc of the plate member T have liquid repellency.
- the receiving surface Tg, the inner surface Th, and the facing surface Tj of the plate member T also have liquid repellency.
- the surface Pa, the back surface Pb, and the side surface Pc of the substrate P also have liquid repellency.
- the interval of the gap G is set so that the liquid LQ does not enter.1S Since the back surface Pb of the substrate P forming the gap G and the opposing surface Tj of the plate member T are liquid-repellent, It is possible to more reliably prevent the liquid LQ from leaking out of the plate member T via the gap G.
- the opposing surface Tj of the plate member T is desirably liquid-repellent, but the side surface Tc, the receiving surface Tg,
- the side surface Th is not necessarily required to be lyophobic, but may be selectively lyophobic.
- the second holding portion PH2 holding the plate member T is provided with an intermediate peripheral wall portion provided between the second peripheral wall portion 62 and the third peripheral wall portion 63. 162. Then, the base material PHB, the intermediate peripheral wall portion 162, the third peripheral wall portion 63, and the plate member T A second space 32 is formed.
- the second suction port 61 is formed on the upper surface of the base material PHB corresponding to the second space 32, and the second vacuum system 60 (not shown in FIG. Then, the plate member T is suction-held by sucking the gas of the above-mentioned manner and making the second space 32 a negative pressure.
- a space 167 is formed by the base material PHB, the second peripheral wall portion 62, the intermediate peripheral wall portion 162, and the plate member T.
- the liquid recovery port 161 connected to the recovery vacuum system 160 via the flow path 165 is formed on the upper surface of the base material PHB corresponding to the space 167.
- a flow path 171 through which the liquid LQ can flow is formed at a position of the plate member T facing the liquid recovery port 161.
- the flow path 171 is a hole that penetrates the receiving surface Tg and the back surface Tb of the plate member T.
- the liquid LQ held in the space 173 flows into the space 167 via the channel 171.
- the liquid LQ penetrating from the gap A between the edge of the surface Pa of the substrate P and the edge of the surface Ta of the plate member T is formed on the receiving surface Tg of the plate member T and is connected to the upper end of the flow path 171.
- the liquid is recovered from the liquid recovery port 161 in the space 167 through the recovery port 172 that is provided.
- the control device CONT drives the first and second vacuum systems 40 and 60 (not shown in FIG. 11) for a predetermined period including during the exposure of the substrate P.
- the control device CONT stops driving the recovery vacuum system 160.
- the controller CONT replaces the exposed substrate P with a new substrate P as described with reference to FIG.
- the control device CONT starts driving the recovery vacuum system 160 before the substrate P is separated from the first support portion 46, and sucks the gas in the space 167 through the liquid recovery device 161 to form the space 167. Apply negative pressure. Due to the space 167 force S negative pressure, the liquid LQ stored in the space 173 flows into the flow channel 171 from the recovery port 172 of the plate member, and flows to the space 167 side.
- the liquid LQ that has flowed into the space 167 is sucked and collected through the liquid collecting port 161 formed on the base material PHB in the space 167.
- the liquid LQ that has entered from the gap A can be held by the plate member T.
- the liquid LQ can be collected through the liquid collecting port 172 formed in the plate member ⁇ at a predetermined timing such as during the replacement of the substrate ⁇ .
- the drive of the recovery vacuum system 160 is stopped during the exposure of the substrate ⁇ , the influence of the vibration due to the drive of the recovery vacuum system 160 on the exposure and the immersion area AR2 during the exposure change Can be suppressed.
- the driving of the recovery vacuum system 160 may be continued during the replacement of the substrate ⁇ . However, when the new substrate ⁇ is placed on the substrate holding part PH1, the displacement of the substrate ⁇ due to vibration or the like may occur. In order to prevent such problems, it is desirable that the drive of the recovery vacuum system 160 be stopped. In addition, the recovery vacuum system 160 may be driven during exposure of the substrate ⁇ . In this case, however, the space 167 must be negatively charged so as not to affect the exposure accuracy or change the liquid immersion area AR2. It is better to reduce the pressure.
- FIG. 12 shows a fourth embodiment. Note that the description of the configuration and the modification common to the first embodiment and the modification thereof will be simplified or omitted.
- the liquid recovery port 181 for recovering the liquid LQ that has entered from the gap ⁇ between the substrate ⁇ held by the first holding unit PH1 and the plate member ⁇ held by the second holding unit ⁇ 2 is provided. It is provided outside the first space 31 and the second space 32 on the base material PHB. Specifically, the liquid recovery port 181 is provided on the upper surface of the base material PHB between the first peripheral wall portion 42 of the first holding portion PH1 and the second peripheral wall portion 62 of the second holding portion PH2. It is provided at a position almost opposite to A.
- the liquid recovery port 181 is formed in a plurality of slits along the first peripheral wall portion 42 (second peripheral wall portion 62) in plan view.
- the liquid recovery port 181 formed in the base material PHB is connected to a recovery vacuum system 180.
- the gap A between the substrate P held by the first holding part PH1 and the plate member T held by the second holding part PH2 is filled with the liquid LQ that has entered.
- a slope 182 for collecting at the liquid recovery port 181 is formed.
- the slope 182 has a first slope 182A descending from the first peripheral wall 42 toward the liquid recovery port 181 and a second slope 182B descending from the second peripheral wall 42 toward the liquid recovery port 181.
- the upper surface 62A of the second peripheral wall portion 62 is almost in close contact with the rear surface Tb of the plate member T.
- the control device CONT drives the first and second vacuum systems 40 and 60 (not shown in FIG. 12) for a predetermined period including during the exposure of the substrate P, By setting the first and second spaces 31 and 32 to a negative pressure, the substrate P and the plate member T are sucked and held by the first and second holding units PH1 and PH2, respectively.
- the control device CONT stops driving the recovery vacuum system 180.
- the liquid LQ is on the gap A or inside the gap A, which does not enter the first space 31 on the back surface Pb side of the substrate P, and the second space 32 on the back surface Tb side of the plate member T, or the first peripheral wall portion 42.
- the control device CONT replaces the exposed substrate P with a new substrate P as described with reference to FIG.
- the control device CONT starts driving the recovery vacuum system 180 and sucks and recovers the liquid LQ from the liquid recovery port 181. Since the slope 182 for collecting the liquid LQ in the liquid recovery port 181 is formed on the base material PHB, the liquid LQ is recovered better than the liquid recovery 181.
- the gap C between the first peripheral wall portion 42 and the second peripheral wall portion 62 is larger than the gap A between the side surface Pc of the substrate P and the side surface Tc of the plate member T, that is, the peripheral wall portions 42, 62
- the driving of the recovery vacuum system 180 may be continued during the exchange of the substrate P. However, when the new substrate P is placed on the substrate holding part PH1, the displacement of the substrate P due to vibration or the like may occur. It is desirable that the driving of the recovery vacuum system 180 be stopped in order to prevent the occurrence of the above. [0153] Further, the recovery vacuum system 180 may be driven during the exposure of the substrate P. In this case, the recovery vacuum system 180 is controlled so that the exposure accuracy does not deteriorate and the liquid immersion area AR2 does not fluctuate. It is better to reduce the suction force by
- the upper surface 62A of the second peripheral wall portion 62 and the back surface Tb of the plate member T are almost in close contact, but a minute gap B may be formed.
- a minute gap B may be formed.
- FIG. 13 is a diagram showing a fifth embodiment of the present invention.
- the fifth embodiment is a modification of the first embodiment, and the description of the common parts with the first embodiment will be simplified or omitted.
- a liquid recovery port for recovering the liquid LQ penetrating from the gap A is formed inside the second space 32 to suck and hold the plate member T, similarly to the embodiment shown in FIG. Also serves as the second suction port 61.
- the first peripheral wall portion 42 extends from the first peripheral wall portion 42 (the second space 32).
- a descending slope 192 is formed.
- the slope 192 is provided at a position substantially facing the gap A, and has a function of collecting the liquid LQ that has entered from the gap A on the second peripheral wall 62 side.
- the liquid LQ that has entered from the gap A enters the second space 32 via the space between the first peripheral wall 42 and the second peripheral wall 62 and the gap B. It flows in and is sucked and collected from the second suction port 61.
- An inclined surface 192 is formed on the upper surface of the base material PHB between the first peripheral wall portion 42 and the second peripheral wall portion 62, so that the force S can concentrate the liquid LQ on the second peripheral wall portion 62 side.
- the liquid LQ that has entered from the gap A can be suctioned and recovered through the second suction port 61 better.
- the intermediate peripheral wall 162 may be provided as in the second embodiment, or the first peripheral wall 42 may be disposed as in the fourth embodiment of FIG.
- a flow path for collecting the liquid LQ may be provided between the second peripheral wall portion 62 and the second peripheral wall portion 62.
- the upper surface and the side surface of the second peripheral wall portion 62 are made lyophobic.
- the upper surface and the side surface of the second peripheral wall portion 62 may be made lyophilic.
- a recovery port for recovering the liquid LQ may be provided on the back side of the plate member T.
- the plate member T may be formed by a single plate-shaped member.
- a plurality of plate members may form the upper surface of the substrate stage PST.
- the second holding part PH2 has a function of adjusting the position (height) and inclination of the plate member T in the Z-axis direction such that the surface Ta of the plate member T and the surface Pa of the substrate P are substantially flush. May be added.
- FIG. 14 is a plan view of the substrate stage PST of the present embodiment
- FIG. 15 is a side sectional view of the substrate stage PST (substrate holder PH).
- the substrate holder PH is formed on the base material PHB, the first holding part PH1 formed on the base material PHB and adsorbing and holding the substrate P, and formed on the base material PHB and provided on the first holding part PH1.
- a second holding part PH2 for holding the first plate member T1 by suction, and in the vicinity of the substrate P formed on the base material PHB and sucked and held by the first holding part PH1,
- a third holding part PH3 for holding the two plate members T2 by suction.
- the first plate member T1 and the second plate member T2 are separate members from the base material PHB, are provided detachably with respect to the base material PHB of the substrate holder PH, and are replaceable.
- the first plate member T1 is arranged near the substrate P held by the first holding part PH1. Near the surface Pa of the substrate P held by the first holding part PH1, the surface Ta of the first plate member T1 held by the second holding part PH2 is arranged.
- the front surface Ta and the back surface Tb of the first plate member T1 are flat surfaces (flat portions).
- the front surface Td and the back surface Te of the second plate member T2 are also flat surfaces (flat portions).
- the first plate member T1 is a substantially annular member, and is arranged so as to surround the substrate P held by the first holding portion PHI. 2nd holding unit Held by PH2
- the surface Ta of the first plate member T is arranged around the substrate P held by the first holding portion PH1, and is formed so as to surround the substrate P. That is, the first plate member T1 forms a flat surface Ta around the substrate P held by the first holding portion PH1.
- the outer shape of the second plate member T2 is formed in a rectangular shape in plan view so as to follow the shape of the base material PHB, and the substrate P and the first plate member T1 It has a substantially circular hole TH2 in which can be placed. That is, the second plate member T2 is a substantially annular member, and is disposed around the substrate P held by the first holding portion PH1 and the first plate T1 held by the second holding portion PH2. It is arranged so as to surround the first plate member T1. Further, the second plate member T2 held by the third holding portion PH3 forms a flat surface Td on the outside of the first plate member T1 with respect to the substrate P held by the first holding portion PH1.
- Each of the first plate member T1 and the second plate member T2 has substantially the same thickness as the substrate P.
- the surface Pa of the substrate P held by the holding portion PH1 is almost flush with the surface Pa. That is, the surface of the first plate member T1 and the surface of the second plate member T2 form a flat portion around the substrate P, substantially flush with the surface of the substrate P.
- the surface Ta of the first plate member T1 and the surface Td of the second plate member T2 are liquid-repellent to the liquid Q. Further, the back surface Tb of the first plate member T1 and the back surface Te of the second plate member T2 also become lyophobic to the liquid LQ.
- the base material PHB of the substrate holder PH is formed in a rectangular shape in a plan view, and the two sides of the base material PHB that are perpendicular to each other are provided with the position of the base material PHB (substrate holder PH).
- a movable mirror 93 for measuring a laser interferometer 94 is formed. That is, also in the present embodiment, when the substrate P is held, the upper surface of the substrate stage PST is formed to be a flat surface (full flat surface) in almost the entire region including the surface Pa of the held substrate P. I have.
- the first holding part PH1 of the substrate holder PH has a convex first support part 46 formed on the base material PHB and a first support part 46 surrounding the first support part 46.
- Substrate Formed on PHB And a first suction port 41 formed on the base material PHB inside the first peripheral wall portion 42.
- the plurality of first support portions 46 and the first suction ports 41 are uniformly arranged inside the first peripheral wall portion 42.
- the upper surface 42A of the first peripheral wall portion 42 faces the rear surface Pb of the substrate P.
- Each of the first suction ports 41 is connected to the first vacuum system 40 via a flow path 45.
- the control device CONT drives the first vacuum system 40 and sucks gas (air) in the first space 31 surrounded by the base material PHB, the first peripheral wall portion 42, and the substrate P, and this first space By applying a negative pressure to the substrate 31, the substrate P is suction-held on the first support portion 46.
- the second holding portion PH2 of the substrate holder PH includes a substantially annular second circumferential wall portion 62 formed on the base material PHB so as to surround the first circumferential wall portion 42 of the first holding portion PH1.
- the second peripheral wall portion 62 is provided outside the first peripheral wall portion 31 with respect to the first space 31, and the third peripheral wall portion 63 is provided further outside the second peripheral wall portion 62.
- a plurality of second support portions 66 and second suction ports 61 are formed uniformly between the second peripheral wall portion 62 and the third peripheral wall portion 63.
- the upper surface 62A of the second peripheral wall portion 62 and the upper surface 63A of the third peripheral wall portion 63 face the rear surface Tb of the first plate member T1.
- Each of the second suction ports 61 is connected to the second vacuum system 60 via the flow path 65.
- the control device CONT drives the second vacuum system 60 to remove gas (air) inside the second space 32 surrounded by the base material PHB, the second and third peripheral wall portions 62 and 63, and the first plate member T1.
- the first plate member T1 is suction-held on the second support portion 66 by suction to make the second space 32 a negative pressure.
- the third holding portion PH3 of the substrate holder PH includes a substantially annular fourth circumferential wall portion 82 formed on the base material PHB so as to surround the third circumferential wall portion 63 of the second holding portion PH2.
- An annular fifth peripheral wall 83 which is provided outside the peripheral wall 82 and is formed on the base material PHB so as to surround the fourth peripheral wall 82, is provided between the fourth peripheral wall 82 and the fifth peripheral wall 83.
- a third suction port 81 formed on the base material PHB between the fourth peripheral wall portion 82 and the fifth peripheral wall portion 83.
- the fourth peripheral wall portion 82 is provided outside the fourth peripheral wall portion 82 with respect to the second space 32, and the fifth peripheral wall portion 83 is provided further outside the fourth peripheral wall portion 82.
- number 3 A plurality of the support portions 86 and the third suction ports 81 are uniformly formed between the fourth peripheral wall portion 82 and the fifth peripheral wall portion 83.
- the upper surface 82A of the fourth peripheral wall portion 82 and the upper surface 83A of the fifth peripheral wall portion 83 face the rear surface Te of the second plate member T2.
- Each of the third suction ports 81 is connected to a third vacuum system 80 via a flow path 85.
- the third vacuum system 80 is for reducing the pressure in the third space 33 surrounded by the base material PHB, the fourth and fifth peripheral wall portions 82 and 83, and the second plate member T2.
- the fourth and fifth peripheral wall portions 82 and 83 function as outer wall portions surrounding the outside of the third space 33 including the third support portion 86, and the control device CONT drives the third vacuum system 80 to The gas (air) inside the third space 33 surrounded by the material PHB, the fourth and fifth peripheral wall portions 82 and 83, and the second plate member T2 is suctioned to make the third space 33 a negative pressure. Then, the second plate member T2 is suction-held on the third support portion 86.
- a first vacuum system 40 for creating a negative pressure in the first space 31, a second vacuum system 60 for creating a negative pressure in the second space 32, and a negative pressure in the third space 33 are provided. And is independent of the third vacuum system 80.
- the control device CONT can individually control the operations of the first vacuum system 40, the second vacuum system 60, and the third vacuum system 80, and the suction of the first vacuum system 40 into the first space 31.
- the operation, the suction operation to the second space 31 by the second vacuum system 60, and the suction operation to the second space 33 by the third vacuum system 80 can be performed independently.
- the controller CONT controls the first vacuum system 40, the second vacuum system 60, and the third vacuum system 80, respectively, and controls the pressure in the first space 31, the pressure in the second space 32, and the pressure in the third space 33. Can be different from each other.
- a gap of, for example, 0.1 to 1. Omm between the outer edge portion of the substrate P held by the first holding portion PH1 and the inner edge portion of the first plate member T1 provided around the substrate P has a gap of, for example, 0.1 to 1. Omm. Further, between the outer edge portion of the first plate member T1 held by the second holding portion PH2 and the inner edge portion of the second plate member T2 provided around the first plate member T1. Also, a predetermined gap, for example, a gap of about 0 :! to 1. Omm is formed.
- the first plate member T1 arranged around the substrate P is provided with a projection 150 corresponding to the notch portion NT (or the orientation flat portion) formed on the substrate P. ing.
- the first peripheral wall 42 and the second peripheral wall 62 also have a shape corresponding to the notch NT of the substrate P. Have.
- the upper surface 42A of the first peripheral wall portion 42, the upper surface 62A of the second peripheral wall portion 62, and the upper surface 63A of the third peripheral wall portion 63 are flat surfaces. Further, the upper surface 82A of the fourth peripheral wall portion 82 and the upper surface 83A of the fifth peripheral wall portion 83 are also flat surfaces.
- the first support portion 46 is formed to have the same height force as the first peripheral wall portion 42 and a slightly higher height than the first peripheral wall portion 42.
- the space 31 has a negative pressure
- the back surface Pb of the substrate P and the upper surface 42A of the first peripheral wall portion 42 can be brought into close contact.
- the second support part 66 is formed slightly higher than the second peripheral wall part 62, so that even if the second space 32 is under a negative pressure, the back surface Tb of the first plate member T1 is in contact with the second support part 66.
- a predetermined gap B is formed between the second peripheral wall portion 62 and the upper surface 62A.
- the third peripheral wall 63 is slightly lower than the second support 66 or substantially at the same height as the second support 66, and the upper surface 63A of the third peripheral wall 63 and the first plate member are formed.
- the back surface of T1 is in close contact with Tb.
- the height of the second support portion 66 and the height of the second peripheral wall portion 62 can be determined so that the back surface Tb of the first plate member T1 and the upper surface 62A of the second peripheral wall portion 62 are in close contact. Also, the height of the second support portion 66 and the height of the third peripheral wall portion 63 are set so that a small gap is formed between the back surface Tb of the first plate member T1 and the upper surface 63A of the third peripheral wall portion 63. You can decide.
- the fourth support part 86 is slightly higher than the fourth peripheral wall part 82 and the fifth peripheral wall part 83, or the fourth peripheral wall part 82 and the fifth peripheral wall part 83.
- the upper surface 82A of the fourth peripheral wall portion 82 and the upper surface 83A of the fifth peripheral wall portion 83 and the rear surface Te of the second plate member T2 are in close contact with each other.
- a predetermined gap may be formed between the upper surface 82A of the fourth peripheral wall portion 82 and the upper surface 83A of the fifth peripheral wall portion 83 and the rear surface Te of the second plate member T2.
- the first plate member T1 and the second plate member T2 are formed of different materials, and the liquid repellency durability of the surface Ta of the first plate member T1 is the same as that of the first plate member T1.
- the durable performance of the liquid repellency of the surface Td of the two-plate member T2 is higher.
- the first plate member T1 disposed around the substrate P is formed of, for example, a fluorine-based resin material such as PTFE (polytetrafluoroethylene).
- the second plate member T2 is formed of quartz (glass), and has a front surface Td and a back surface Td. e and side surfaces (surfaces facing the first plate member Tl) Tf are coated with a liquid-repellent material.
- the liquid-repellent material include a fluorine-based resin material such as polytetrafluoroethylene or an acrylic resin material. Then, by applying (coating) these lyophobic materials to the plate member T made of quartz, the surface Td, the back surface Te, and the side surface Tf of the second plate member T2 each repel the liquid LQ. It is liquid.
- a predetermined position on the surface Td of the second plate member T2 is a reference for defining the position of the substrate P with respect to the pattern image of the mask M via the projection optical system PL.
- Mark A reference section 300 having MFM and PFM is provided.
- a reference plate 400 used as a reference surface of the focus leveling detection system is provided.
- the upper surface of the reference portion 300 and the upper surface of the reference plate 400 are substantially flush with the surface Pa of the substrate P held by the first holding portion PH1.
- the liquid-repellent material is also coated on the reference portion 300 having the reference marks MFM and PFM and the reference plate 400, and the upper surface of the reference portion 300 and the upper surface of the reference plate 400 also become repellent at night. I have.
- the width Ht of the surface Ta of the first plate member T1 which is formed in an annular shape, is formed to be at least larger than the projection area AR1.
- the first plate member T1 to which the exposure light EL is irradiated is formed of a liquid-repellent material (for example, PTF E), and the surface Ta of the first plate member T1 has a durable property of liquid repellency. Higher than the durable performance of the liquid repellency of the surface Td of the second plate member T2.
- the second plate member T2 is not formed of quartz but formed of, for example, PTFE.
- the second plate member T2 is formed. Quartz is preferred as the forming material. Then, by forming fiducial marks MFM and PFM on surface Td of second plate member T2, the upper surface of substrate stage PST can be made a full flat surface.
- the second plate member T2 which is a region not irradiated with the exposure light EL, is formed of quartz, and the reference mark MFM is formed on the surface Td.
- the PFM is formed, and the second plate member T2 on which the reference marks MFM and PFM are formed is coated with a lyophobic material to form a full flat surface having lyophobicity. Note that only one of the reference mark MFM and the reference mark PFM may be formed on the second plate member.
- the width Ht of the surface Ta of the first plate member T1 is preferably larger than the liquid immersion area AR2 formed on the image plane side of the projection optical system PL.
- the immersion area AR2 is arranged on the surface Ta of the first plate member T1, and is not arranged on the second plate member T2. The inconvenience that the liquid LQ in the immersion area AR2 enters the gap between the first plate member T1 and the second plate member T2 can be prevented.
- the first plate member T1 when replacing the first plate member T1, the first plate member T1 is moved up and down by using the second elevating member 57 provided below the first plate member T1.
- an elevating member is also provided below the second plate member T2, and when replacing the second plate member T2, the second plate member T2 is raised and lowered using the elevating member. Is done. Since the second vacuum system 40 for sucking and holding the first plate member T1 and the third vacuum system 60 for sucking and holding the second plate member T2 are independent of each other, the suction of the first plate member T1 is performed. The holding / suction / holding release operation and the suction / holding / releasing operation of the second plate member T2 can be performed independently of each other.
- the controller CONT replaces the first plate member T1 and the second plate member T2 in accordance with the level of deterioration of the liquid repellency of each of the first plate member T1 and the second plate member T2. Can be executed at different timings.
- the upper surface 63A of the peripheral wall portion 63, the upper surface 86A of the third support portion 86, the upper surface 82A of the fourth peripheral wall portion 82, and the upper surface 83A of the fifth peripheral wall portion 83 have almost the same height, albeit with a slight difference in height. It is the same height. Therefore, the workability when polishing the upper surfaces is good.
- the first plate member T1 made of PTFE or the like is formed in an annular shape, and is arranged so as to surround the periphery of the substrate P.
- a second plate made of quartz The member T2 is formed in an annular shape, and includes a reference portion 300 having a reference mark MFM, PFM, for example, a force disposed outside the first plate member T1 so as to surround the first plate member T1. Only a part of the small region may be formed by the second plate made of quartz, and the other part of the large region may be formed by the first plate member made of PTFE or the like.
- the region irradiated with the exposure light EL is formed of a plate member made of a liquid-repellent material such as PTFE, and the region including the reference portion 300 is formed of a plate member made of quartz. Desired ,.
- the liquid immersion light exposure device that projects the pattern image of the mask M onto the substrate P via the liquid LQ has been described as an example, but in the present embodiment, the liquid LQ is also used.
- the present invention can be applied to a normal dry exposure apparatus that projects the pattern image of the mask M onto the substrate P without using the same.
- the first and second plate members T1 and T2 forming the upper surface of the substrate stage PST are adsorbed and held by the second and third holding portions PH2 and PH3, and are detachable (replaceable) from the base material PHB. For example, when a foreign member (impurity) adheres to or contaminates a plate member and the replacement is desired, the plate member can be replaced with a new plate member.
- the substrate holder PH has a configuration having two plate members, a first plate member and a second plate member.
- a configuration having a plurality of plate members may be used.
- suction holding portions corresponding to the number of plate members are provided on the base material PHB.
- a configuration in which a plurality of plate members are suction-held to the base material PHB only a predetermined plate member that needs to be replaced among the plurality of plate members may be replaced.
- each plate is not limited to those described above, and an optimum material may be determined in consideration of the presence or absence of the reference portion, the durability of the liquid repellency, and the like.
- the upper surface and the side surface of the second peripheral wall portion 62 are made lyophobic, but allow the liquid LQ to enter the rear surface side of the plate member T (T1, ⁇ 2).
- the upper surface and the side surface of the second peripheral wall portion 62 need not be made lyophobic, but the upper surface and the side surface of the second peripheral wall portion 62 may be made lyophilic.
- the plate member ⁇ ⁇ ( ⁇ 1, ⁇ A collection port for collecting the liquid LQ may be provided on the back side of 2).
- the second to fifth peripheral wall portions are formed in an annular shape so as to surround the first peripheral wall portion 42.
- the positions and shapes of the second to fifth peripheral wall portions are different from those of the plate member.
- T (T1, ⁇ 2) can be adsorbed and held, various modes can be adopted.
- a closed space (negative pressure space) for holding the plate member ⁇ ( ⁇ 1, ⁇ 2) by suction is formed between the base material ⁇ ⁇ and the back surface of the plate member ⁇ ( ⁇ 1, ⁇ 2).
- the peripheral wall may be formed.
- the peripheral wall may be provided so that a plurality of closed spaces (negative pressure spaces) are formed between one plate member ⁇ ( ⁇ 1, ⁇ 2) and the base material ⁇ . Good.
- the thickness of the plate member ⁇ ⁇ ⁇ ⁇ ( ⁇ ⁇ ⁇ ⁇ 1, ⁇ 2) is substantially the same as the thickness of the substrate ⁇ , but may be different from the thickness of the substrate ⁇ .
- the supporting portion 46 of the substrate ⁇ ⁇ ⁇ or the plate member ⁇ ( ⁇ 1, ⁇ 2) is so arranged that the surface of the substrate ⁇ sucked and held by the substrate holder ⁇ and the surface of the plate member ⁇ ( ⁇ 1, ⁇ 2) are substantially flush. It is desirable to set the height of the support portion 66 (86) of ().
- the plate members ⁇ , Tl, ⁇ 2 are held on the base material ⁇ by a vacuum suction method, but other holding members such as an electrostatic chuck mechanism, an electromagnetic chuck mechanism, and a magnet chuck mechanism are used. A mechanism can also be used.
- the exposure apparatus has a configuration including one substrate stage PST, but the present invention is also applicable to an exposure apparatus including two stages. This will be described with reference to FIG.
- the exposure apparatus ⁇ shown in FIG. 16 has a substrate holder ⁇ ⁇ for holding the substrate ⁇ , and is provided at a position in line with the substrate stage PST1 that can move while holding the substrate ⁇ , and The measurement stage PST2 having the above-described reference unit 300 is provided.
- the plate member ⁇ is held by suction on the substrate holder ⁇ ⁇ on the substrate stage PST1.
- the measurement stage PST2 is a stage dedicated to measurement and does not hold the substrate ⁇ , and the measurement stage PST2 is provided with a holding unit for sucking and holding the plate members ⁇ and ⁇ ⁇ ⁇ ⁇ ⁇ having the reference unit 300. I have.
- the measurement stage PST2 On the measurement stage PST, a plate member having a reference section 300 is suction-held by the holding section.
- the measurement stage PST2 includes an optical sensor including an illuminance unevenness sensor as described above. Sensors are provided.
- the substrate stage PST1 and the measurement stage PST2 are two-dimensionally movable independently of each other in the XY plane by a stage driving device including a linear motor and the like.
- the positions of the substrate stage PST1 and the measurement stage PST2 in the XY direction are measured by a laser interferometer.
- the liquid immersion area AR2 of the liquid LQ is formed on both the substrate stage PST1 and the measurement stage PST2, the upper surface of the plate member T on the substrate stage PST1 and the measurement There is a possibility that foreign matter may adhere to each of the upper surfaces of the plate members T 'on the stage PST2, and adhesion marks (water marks) of the liquid LQ may be formed.
- the plate members 1 ⁇ T 'of the substrate stage PST1 and the measurement stage PST2 can be exchanged.
- the present invention can also be applied to a twin-stage type exposure apparatus including two substrate stages for holding a substrate.
- the structure and exposure operation of a twin-stage type exposure apparatus are described in, for example, JP-A-10-163099 and JP-A-10-214783 (corresponding to U.S. Pat. Nos. 6,341,007, 6,400,441, 6,549,269).
- US Patent No. 5,969,441) which are disclosed in US Patent 6,208,407 and are designated or selected in the international application. To the extent permitted by applicable law, those disclosures are incorporated into the description of the text.
- the mechanism for forming the liquid immersion area AR2 on the image plane side of the projection optical system PL is not limited to the above-described embodiment, and various types of mechanisms can be used.
- a mechanism disclosed in European Patent Application Publication No. EP1 420298 (A2) can be used.
- pure water was used as the liquid LQ in the present embodiment.
- Pure water has the advantage that it can be easily obtained in large quantities at a semiconductor manufacturing plant or the like, and that there is no adverse effect on the photoresist on the substrate P, optical elements (lenses), and the like.
- pure water has no adverse effect on the environment and has an extremely low impurity content. Therefore, it is expected that the surface of the substrate P and the surface of the optical element provided on the front end surface of the projection optical system PL are also cleaned. it can. If the purity of pure water supplied from a factory or the like is low, the exposure apparatus may have an ultrapure water producing device.
- the refractive index n of pure water (water) with respect to the exposure light EL having a wavelength of about 193 nm is approximately 1.4.
- ArF excimer laser light wavelength 193 nm
- the wavelength is shortened to l / n on the substrate P, that is, about 134 nm, and high resolution is obtained.
- the depth of focus is expanded to about n times, that is, about 1.44 times as compared with that in the air, when it is sufficient to secure the same depth of focus as that used in air, projection The numerical aperture of the optical system PL can be further increased, and this also improves the resolution.
- the numerical aperture NA of the projection optical system may be 0.9 to 1.3.
- the numerical aperture NA of the projection optical system is increased as described above, the polarization effect may deteriorate the imaging performance of the randomly polarized light conventionally used as the exposure light. Is desirable.
- linearly polarized illumination is performed in line with the longitudinal direction of the line pattern of the mask (retinator) line 'and' space pattern, and the S (polarized light) component (TE polarized component), It is preferable that a large amount of diffracted light of the polarization direction component along the longitudinal direction of the line pattern is emitted.
- the space between the projection optical system PL and the resist applied to the surface of the substrate P is filled with air (gas).
- the transmittance of diffracted light of S-polarized light component (TE-polarized light component), which contributes to the improvement of contrast, on the resist surface is higher than that of the case where the numerical aperture NA of the projection optical system exceeds 1.0. Even in such a case, high imaging performance can be obtained. Further, it is more effective to appropriately combine a phase shift mask, such as an oblique incidence illumination method (particularly a dipole illumination method) adapted to the longitudinal direction of the line pattern as disclosed in Japanese Patent Application Laid-Open No. 6-188169.
- the combination of the linearly polarized illumination method and the dipole illumination method is used when the periodic direction of the line-and-space pattern is limited to one predetermined direction, or when the hole pattern is dense along the predetermined one direction. It is effective when For example, when illuminating a halftone type phase shift mask with a transmittance of 6% (a pattern with a notch pitch of about 45 nm) by using both the linearly polarized illumination method and the dipole illumination method, the pupil plane of the illumination system should be placed on the pupil plane.
- the illumination ⁇ defined by the circumcircle of the two beams forming the dipole is 0.95
- the radius of each beam on the pupil plane is 0.125 ⁇
- NA the numerical aperture of the projection optical system PL.
- the depth of focus (DOF) is about 150nm compared to using randomly polarized light. Can be increased.
- a fine line 'and' space pattern for example, a line 'and' of about 25 to 50nm
- the mask M acts as a polarizer due to the wave guide effect, and reduces the contrast. More diffracted light of the S polarization component (TE polarization component) is emitted from the mask M than the diffracted light of the polarization component (TM polarization component).
- the numerical aperture NA of the projection optical system PL is as large as 0.9 to 1.3. Even in such a case, high resolution performance can be obtained.
- the P polarization component (TM polarization component) is converted to the S polarization component (TE polarization component) by the Wire Grid effect.
- TM polarization component the P polarization component
- S polarization component TE polarization component
- a line 'and' space pattern larger than 25 nm is formed on the substrate P.
- the S-polarized component (TE-polarized component) diffracted light is emitted from the mask M more than the P-polarized component (TM polarized component) diffracted light, so the numerical aperture of the projection optical system PL Even when NA is as large as 0.9 or 1.3, the ability to obtain high resolution performance can be achieved even when the NA is as large as 1.3.
- JP-A-6-53120 which uses only linearly polarized light (S-polarized light) aligned with the longitudinal direction of the line pattern of the mask (reticle), the optical axis is centered. It is also effective to use a combination of the polarized illumination method and the oblique incidence illumination method that linearly polarizes in the tangential (circumferential) direction of the circle. In particular, when a plurality of line patterns extending in different directions are mixed (only line patterns with different periodic directions and space patterns are mixed), the pattern of the mask (reticle) extending only in a predetermined direction. As disclosed in Japanese Patent Application Laid-Open No.
- a projection optical system can be obtained by using both a polarization illumination method that linearly polarizes light in a tangential direction of a circle centered on an optical axis and an annular illumination method.
- High imaging performance can be obtained even when the numerical aperture NA is large.
- a halftone phase shift mask with a transmittance of 6% (a pattern with a half pitch of about 63 nm) is placed around the optical axis.
- the illumination ⁇ is 0.95 and the numerical aperture of the projection optical system PL is ⁇ .
- the depth of focus can be increased by about 100 nm.
- the optical element 2 is attached to the tip of the projection optical system PL, and this lens is used to adjust the optical characteristics of the projection optical system PL, for example, aberrations (spherical aberration, coma, etc.). be able to.
- the optical element attached to the tip of the projection optical system PL may be an optical plate used for adjusting the optical characteristics of the projection optical system PL. Alternatively, it may be a plane-parallel plate that can transmit EL light.
- the optical element When the pressure between the optical element at the tip of the projection optical system PL and the substrate P caused by the flow of the liquid LQ is large, the optical element is not replaced by the pressure, but the optical element cannot be replaced.
- the element may be firmly fixed so as not to move.
- a cover glass made of a plane-parallel plate is attached to the surface of the substrate P, for example, a force between the projection optical system PL and the surface of the substrate P that is filled with the liquid LQ.
- the liquid LQ may be filled in this state.
- the cover glass may cover a part of the surface of the plate.
- the liquid LQ of the present embodiment may be a liquid other than water, which is water.
- the light source of the exposure light EL is an F laser
- the F laser light does not pass through water.
- liquid LQ for example, perfluoropolyether (PFPE) or
- It may be a fluorine-based fluid such as a fluorine-based oil.
- the portion that comes into contact with the liquid LQ is subjected to lyophilic treatment by forming a thin film of a substance having a small molecular structure, for example, containing fluorine.
- other liquid LQs that are transparent to the exposure optical system EL and have a refractive index as high as possible and are stable to the photo resist coated on the surface of the substrate P (for example, Cedar) Oil) can also be used.
- the surface treatment is performed according to the polarity of the liquid LQ used.
- the substrate P in each of the above embodiments is not limited to a semiconductor wafer for manufacturing a semiconductor device, but may be a glass substrate for a display device, a ceramic wafer for a thin-film magnetic head, or a mask or a mask used in an exposure apparatus.
- An original reticle synthetic quartz, silicon wafer or the like is applied.
- the exposure apparatus EX includes a step of scanning and exposing a pattern of the mask M by synchronously moving the mask M and the substrate P.
- a scanning type exposure apparatus scanning stepper
- a step-and-repeat type projection exposure apparatus stepper in which the pattern of the mask M is exposed collectively while the mask M and the substrate P are stationary and the substrate P is sequentially moved in steps.
- a reduced image of the first pattern is projected onto a projection optical system (for example, a refraction lens that does not include a reflective element at a 1/8 reduction magnification) while the first pattern and the substrate P are almost stationary.
- the present invention can also be applied to an exposure apparatus of a type that performs simultaneous exposure on a substrate P using a mold projection optical system). In this case, after that, while the second pattern and the substrate P are almost stationary, the reduced image of the second pattern is partially exposed on the substrate P at one time using the projection optical system so as to partially overlap the first pattern.
- the present invention can also be applied to a stitch type batch exposure apparatus. Further, the stitching type exposure apparatus can be applied to a step-and-stitch type exposure apparatus in which at least two patterns are partially overlapped and transferred on the substrate P, and the substrate P is sequentially moved.
- the type of the exposure apparatus EX is not limited to an exposure apparatus for manufacturing a semiconductor element for exposing a semiconductor element pattern onto a substrate P, but may be an exposure apparatus for manufacturing a liquid crystal display element or a display, a thin film magnetic head, or the like. It can be widely applied to an exposure device for manufacturing an image pickup device (CCD), a reticle or a mask, and the like.
- a light-transmitting mask (reticle) in which a predetermined light-shielding pattern (or a phase pattern ⁇ a dimming pattern) is formed on a light-transmitting substrate is used, but instead of this reticle,
- reticle a predetermined light-shielding pattern (or a phase pattern ⁇ a dimming pattern) is formed on a light-transmitting substrate is used, but instead of this reticle,
- reticle a predetermined light-shielding pattern (or a phase pattern ⁇ a dimming pattern) is formed on a light-trans
- each stage PST and MST can be either a type that moves along the guide or a guideless type that does not have a guide. Examples of using linear motors for the stages are disclosed in U.S. Pat. Nos. 5,623,853 and 5,528,118, each of which is to the extent permitted by the laws of the country designated or selected in this International Application. The contents of this document are incorporated herein by reference.
- each stage PST and MST is such that a magnet unit having two-dimensionally arranged magnets and an armature unit having two-dimensionally arranged coils are opposed to each other to drive each stage PST and MST by electromagnetic force.
- a flat motor may be used.
- one of the magnet unit and the armature unit may be connected to the stages PST and MST, and the other of the magnet unit and the armature unit may be provided on the moving surface side of the stages PST and MST.
- the reaction force generated by the movement of the substrate stage PST may be mechanically released to the floor (ground) using a frame member so as not to be transmitted to the projection optical system PL.
- the method of dealing with this reaction force is disclosed in detail, for example, in US Pat. No. 5,528,118 (JP-A-8-166475), and is permitted by the laws of the country designated or selected in this international application. As far as
- the reaction force generated by the movement of the mask stage MST may be mechanically released to the floor (ground) using a frame member so as not to be transmitted to the projection optical system PL.
- the method of dealing with this reaction force is disclosed in detail in, for example, US Pat. No. 5,874,820 (JP-A-8-330224), and is permitted by the laws of the country designated or selected in this international application. To the extent possible, the disclosure of this document is incorporated herein by reference.
- the exposure apparatus EX of the present embodiment assembles various subsystems including the respective components described in the claims of the present application so as to maintain predetermined mechanical accuracy, electrical accuracy, and optical accuracy. It is manufactured by. Before and after this assembly, adjustments to achieve optical accuracy for various optical systems, adjustments to achieve mechanical accuracy for various mechanical systems, For various electrical systems, Adjustments are made to achieve the degree.
- the process of assembling the various subsystems into the exposure apparatus includes mechanical connections, wiring connections of electric circuits, and piping connections of pneumatic circuits among the various subsystems. It goes without saying that there is an individual assembly process for each subsystem before the assembly process from these various subsystems to the exposure apparatus. When the process of assembling the various subsystems into the exposure apparatus is completed, comprehensive adjustment is performed, and various precisions of the entire exposure apparatus are ensured. It is desirable to manufacture the exposure apparatus in a clean room where the temperature and cleanliness are controlled.
- a micro device such as a semiconductor device includes a step 201 for performing function / performance design of the micro device, a step 202 for manufacturing a mask (reticle) based on the design step, and a Step 203 of manufacturing a substrate as a base material, exposure processing step 204 of exposing a mask pattern to the substrate by the exposure apparatus EX of the above-described embodiment, device assembly step (including dicing step, bonding step, and package step) 205 It is manufactured through an inspection step 206 and the like.
- the maintenance work of the substrate holding device or the substrate stage and the exposure device can be easily performed.
- the productivity of the device can be improved.
- the maintenance work of the immersion exposure apparatus can be easily performed.
- the substrate can be favorably exposed in a state where the intrusion of the liquid is suppressed.
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- Condensed Matter Physics & Semiconductors (AREA)
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- Toxicology (AREA)
- Environmental & Geological Engineering (AREA)
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- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
Abstract
Description
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Priority Applications (15)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020167032818A KR20160137690A (ko) | 2004-06-09 | 2005-06-08 | 기판 유지 장치 및 그것을 구비하는 노광 장치, 노광 방법, 디바이스 제조 방법, 그리고 발액 플레이트 |
KR1020127002569A KR101323967B1 (ko) | 2004-06-09 | 2005-06-08 | 기판 유지 장치 및 그것을 구비하는 노광 장치, 노광 방법, 디바이스 제조 방법, 그리고 발액 플레이트 |
KR1020197000596A KR20190006080A (ko) | 2004-06-09 | 2005-06-08 | 기판 유지 장치 및 그것을 구비하는 노광 장치, 노광 방법, 디바이스 제조 방법, 그리고 발액 플레이트 |
KR1020137000176A KR101511876B1 (ko) | 2004-06-09 | 2005-06-08 | 기판 유지 장치 및 그것을 구비하는 노광 장치, 노광 방법, 디바이스 제조 방법, 그리고 발액 플레이트 |
EP13162896.8A EP2637061B1 (en) | 2004-06-09 | 2005-06-08 | Exposure apparatus, exposure method and method for producing a device |
EP05748927.0A EP1788617B1 (en) | 2004-06-09 | 2005-06-08 | Substrate holding device, exposure apparatus having the same and method for producing a device |
US11/629,070 US8705008B2 (en) | 2004-06-09 | 2005-06-08 | Substrate holding unit, exposure apparatus having same, exposure method, method for producing device, and liquid repellant plate |
CN2005800189332A CN1965389B (zh) | 2004-06-09 | 2005-06-08 | 基板保持装置、具备其之曝光装置及方法、元件制造方法 |
KR1020127030679A KR101421870B1 (ko) | 2004-06-09 | 2005-06-08 | 기판 유지 장치 및 그것을 구비하는 노광 장치, 노광 방법, 디바이스 제조 방법, 그리고 발액 플레이트 |
KR1020147032469A KR101681101B1 (ko) | 2004-06-09 | 2005-06-08 | 기판 유지 장치 및 그것을 구비하는 노광 장치, 노광 방법, 디바이스 제조 방법, 그리고 발액 플레이트 |
KR1020067026606A KR101227290B1 (ko) | 2004-06-09 | 2005-06-08 | 기판 유지 장치 및 그것을 구비하는 노광 장치, 노광 방법,디바이스 제조 방법, 그리고 발액 플레이트 |
IL179937A IL179937A (en) | 2004-06-09 | 2006-12-10 | Infrastructure holding facility, exposure facility including it, method or manufacturing facility, and sealing fluid board |
HK07111942.9A HK1103855A1 (en) | 2004-06-09 | 2007-11-02 | Substrate holding device, exposure apparatus having the same and method for producing a device |
IL228755A IL228755A (en) | 2004-06-09 | 2013-10-06 | Infrastructure holding facility, exposure facility including it, method or manufacturing facility, and sealing fluid board |
US14/227,310 US20140226144A1 (en) | 2004-06-09 | 2014-03-27 | Substrate holding unit, exposure apparatus having same, exposure method, method for producing device, and liquid repellant plate |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2004-171116 | 2004-06-09 | ||
JP2004171116 | 2004-06-09 | ||
JP2004-205008 | 2004-07-12 | ||
JP2004205008 | 2004-07-12 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US11/629,070 A-371-Of-International US8705008B2 (en) | 2004-06-09 | 2005-06-08 | Substrate holding unit, exposure apparatus having same, exposure method, method for producing device, and liquid repellant plate |
US14/227,310 Division US20140226144A1 (en) | 2004-06-09 | 2014-03-27 | Substrate holding unit, exposure apparatus having same, exposure method, method for producing device, and liquid repellant plate |
Publications (1)
Publication Number | Publication Date |
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WO2005122219A1 true WO2005122219A1 (ja) | 2005-12-22 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/010458 WO2005122219A1 (ja) | 2004-06-09 | 2005-06-08 | 基板保持装置及びそれを備える露光装置、露光方法、デバイス製造方法、並びに撥液プレート |
Country Status (10)
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US (2) | US8705008B2 (ja) |
EP (3) | EP1788617B1 (ja) |
JP (8) | JP5170228B2 (ja) |
KR (7) | KR101323967B1 (ja) |
CN (4) | CN103558737A (ja) |
HK (4) | HK1103855A1 (ja) |
IL (2) | IL179937A (ja) |
SG (3) | SG153813A1 (ja) |
TW (2) | TWI574300B (ja) |
WO (1) | WO2005122219A1 (ja) |
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