WO2006064851A1 - 基板保持装置、露光装置、及びデバイス製造方法 - Google Patents
基板保持装置、露光装置、及びデバイス製造方法 Download PDFInfo
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- WO2006064851A1 WO2006064851A1 PCT/JP2005/022968 JP2005022968W WO2006064851A1 WO 2006064851 A1 WO2006064851 A1 WO 2006064851A1 JP 2005022968 W JP2005022968 W JP 2005022968W WO 2006064851 A1 WO2006064851 A1 WO 2006064851A1
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- substrate
- peripheral wall
- wall portion
- liquid
- recovery port
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70216—Mask projection systems
- G03F7/70341—Details of immersion lithography aspects, e.g. exposure media or control of immersion liquid supply
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- 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
- G03F7/20—Exposure; Apparatus therefor
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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
- G03F7/70808—Construction details, e.g. housing, load-lock, seals or windows for passing light in or out of apparatus
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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
- G03F7/70875—Temperature, e.g. temperature control of masks or workpieces via control of stage temperature
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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
- H01L21/0275—Photolithographic processes using lasers
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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
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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
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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
- H01L21/687—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 using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—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 using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68735—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 using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by edge profile or support profile
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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
- H01L21/687—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 using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—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 using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/6875—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 using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by a plurality of individual support members, e.g. support posts or protrusions
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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
Definitions
- the present invention relates to a substrate holding apparatus that holds a processing substrate, an exposure apparatus that exposes the processing substrate, and a device manufacturing method.
- an exposure apparatus that projects a pattern image formed on a mask onto a photosensitive substrate is used.
- This exposure apparatus has a mask stage for supporting a mask and a substrate stage for supporting a substrate, and projects an image of a mask pattern onto a substrate via a projection optical system while sequentially moving the mask stage and the substrate stage.
- miniaturization of patterns formed on a substrate is required in order to increase the density of devices.
- the projection optical system disclosed in Patent Document 1 below is used.
- An immersion exposure apparatus has been devised that performs exposure processing in a state where the space between the system and the substrate is higher in refractive index than gas and is filled with liquid!
- Patent Document 1 Pamphlet of International Publication No. 99Z49504
- Patent Document 2 Japanese Patent Application Laid-Open No. 2004-289127
- the present invention has been made in view of such circumstances, and even when a liquid has entered the back side of the substrate, a substrate holding device and a substrate holding apparatus capable of quickly collecting the entered liquid
- An object of the present invention is to provide an exposure apparatus and a device manufacturing method using the exposure apparatus. Means for solving the problem
- the present invention employs the following configurations corresponding to the respective drawings shown in the embodiments.
- the reference numerals in parentheses attached to each element are merely examples of the element and do not limit each element.
- a substrate holding apparatus for holding a processing substrate (P) in which a liquid immersion region (LR) of a liquid (LQ) is formed on a surface (Pa), A base (PHB), a first support (46) formed on the base (PHB) and supporting the back surface (Pb) of the processing substrate (P), and a base (PH B).
- a first peripheral wall portion (42) provided to face the back surface (Pb) of the processing substrate (P) and surround the first support portion (46), and provided outside the first peripheral wall portion (42).
- the first recovery port (51) is provided, and the liquid (LQ) outside the first peripheral wall portion (42) is moved to the first recovery port (51) by the gas flow along the first peripheral wall portion (42).
- the liquid outside the first peripheral wall portion is moved to the first recovery port by the gas flow along the first peripheral wall portion, whereby the liquid is placed on the back surface side of the substrate. Even if the liquid enters, the liquid can be quickly recovered using the first recovery port.
- the exposure apparatus includes the substrate holding device (PH) of the above aspect, and exposes the processing substrate (P) held by the substrate holding device via the liquid (LQ).
- Equipment (EX) is provided.
- the liquid that has entered can be quickly recovered, so that the processing substrate can be exposed satisfactorily.
- a device can be manufactured using an exposure apparatus capable of satisfactorily exposing a processing substrate.
- FIG. 1 is a schematic block diagram that shows an exposure apparatus according to a first embodiment.
- FIG. 2 is a side sectional view of the substrate holder according to the first embodiment.
- FIG. 3 is a plan view of the substrate holder according to the first embodiment viewed from above.
- FIG. 4 is a plan view showing a state in which the substrate holder according to the first embodiment holds the substrate.
- FIG. 5 is an enlarged view of the main part of FIG.
- FIG. 6 is a flowchart showing an example of an exposure operation.
- FIG. 7 is a diagram for explaining a substrate holder that moves between an exposure processing position and a substrate replacement position.
- FIG. 8 is a diagram for explaining a gas flow.
- FIG. 9 is a diagram for explaining the flow of gas.
- FIG. 10 is a diagram for explaining a gas flow.
- FIG. 11 is a diagram for explaining a gas flow.
- FIG. 12 is a plan view of the substrate holder according to the second embodiment when the upward force is also seen.
- FIG. 13 is an enlarged side sectional view of a main part of a substrate holder according to a second embodiment.
- FIG. 14 is a diagram for explaining the flow of gas.
- FIG. 15 is a perspective view showing an example of a slit portion.
- FIG. 16 is a plan view showing an example of a slit portion.
- FIG. 17 is a plan view showing another example of the slit portion.
- FIG. 18 is a plan view showing another example of the slit portion.
- FIG. 19 is a perspective view showing an example of a hole.
- FIG. 20 is a diagram showing a modification of FIG.
- FIG. 21 is a side sectional view of a substrate holder according to a third embodiment.
- FIG. 22 is a plan view showing a state where a plate member is removed from a substrate holder cover according to a third embodiment.
- FIG. 23 is a plan view showing a state in which the substrate holder according to the third embodiment holds the substrate.
- FIG. 24 is an enlarged view of the main part of FIG.
- FIG. 25 is a flowchart showing an example of a microdevice manufacturing process.
- FIG. 1 is a schematic block diagram that shows an exposure apparatus EX according to the first embodiment.
- an exposure apparatus EX includes a mask stage MST that can move while holding a mask M, a substrate holder PH that holds a substrate P, a substrate stage PST that can move a substrate holder PH that holds a substrate P, An illumination optical system IL for illuminating the mask M held by the mask stage MST with the exposure light EL, a projection optical system PL for projecting an image of the pattern of the mask M illuminated with the exposure light EL onto the substrate P, and And a control device CONT that controls the overall operation of the exposure apparatus EX.
- a mask stage MST that can move while holding a mask M
- a substrate holder PH that holds a substrate P
- a substrate stage PST that can move a substrate holder PH that holds a substrate P
- An illumination optical system IL for illuminating the mask M held by the mask stage MST with the exposure light EL
- the exposure apparatus EX of the present embodiment is an immersion exposure apparatus to which an immersion method is applied in order to substantially shorten the exposure wavelength to improve the resolution and substantially increase the depth of focus.
- an immersion mechanism 100 for filling the optical path space K1 of the exposure light EL on the image plane side of the projection optical system PL with the liquid LQ is provided.
- the immersion mechanism 100 is provided near the image plane of the projection optical system PL.
- a nozzle member 70 having a supply port 12 for supplying the liquid LQ and a recovery port 22 for recovering the liquid LQ, and an optical path on the image plane side of the projection optical system PL via the supply port 12 provided in the nozzle member 70
- the nozzle member 70 surrounds the first optical element LS 1 closest to the image plane of the projection optical system PL among the plurality of optical elements constituting the projection optical system PL above the substrate P (substrate holder PH). It is formed in a ring!
- the exposure apparatus EX is on the substrate P including the projection area AR of the projection optical system PL by the liquid LQ supplied from the liquid supply mechanism 10 while projecting at least the pattern image of the mask M on the substrate P.
- a local liquid immersion method is adopted in which a liquid LQ liquid immersion area LR that is larger than the projection area AR and smaller than the substrate P is locally formed.
- the exposure apparatus EX uses the immersion mechanism 100 and is held by the lower surface LSA of the first optical element LSI closest to the image plane of the projection optical system PL and the substrate holder PH.
- Exposure light EL between the surface Pa of the substrate P arranged on the image plane side The optical path space K1 of the EL is filled with the liquid LQ, and the liquid LQ between the projection optical system PL and the substrate P is passed through the projection optical system PL.
- the substrate P is exposed with an image of the pattern of the mask M by irradiating the substrate P with the exposure light EL that has passed through the mask M.
- the control device CONT uses the liquid supply mechanism 10 to supply a predetermined amount of liquid LQ onto the substrate P, and uses the liquid recovery mechanism 20 to recover a predetermined amount of liquid LQ on the substrate P.
- the optical path space K1 of the exposure light EL between the system PL and the substrate P is filled with the liquid LQ, and the liquid LQ immersion region LR is locally formed on the substrate P.
- a scanning exposure apparatus that projects an image of a pattern formed on the mask M onto the substrate P while the mask M and the substrate P are synchronously moved in the respective scanning directions as the exposure apparatus EX.
- scanning direction the synchronous movement direction (scanning direction) of the mask M and the substrate P in the horizontal plane
- the direction orthogonal to the X-axis direction in the horizontal plane is the Y-axis direction (non-scanning direction).
- the direction that is perpendicular to the axis direction and coincides with the optical axis AX of the projection optical system PL is the Z-axis direction.
- the “substrate” here is a photosensitive material (resist) on a base material such as a semiconductor wafer.
- the illumination optical system IL includes an exposure light source, an optical integrator that equalizes the illuminance of the light beam emitted from the exposure light source, a condenser lens that collects the exposure light EL from the optical integrator, a relay lens system, and an exposure. It has a field stop to set the illumination area on the mask M with light EL. The predetermined illumination area on the mask M is illuminated with the exposure light EL having a uniform illuminance distribution by the illumination optical system IL.
- Illumination optical system IL force Dew light emitted EL, such as bright lines (g-line, h-line, i-line) and KrF excimer laser light (wavelength 248nm) emitted from mercury lamps, etc. Light), or vacuum ultraviolet light (VUV light) such as ArF excimer laser light (wavelength 193 nm), F laser light (wavelength 157 nm), etc.
- ArF excimer laser light is used.
- pure water is used as the liquid LQ.
- Pure water is not only ArF excimer laser light, but also, for example, far ultraviolet light (DUV light) such as emission lines (g-line, h-line, i-line) emitted by mercury lamp force, KrF excimer laser light (wavelength 248nm), etc. Can also be transmitted.
- DUV light far ultraviolet light
- emission lines g-line, h-line, i-line
- KrF excimer laser light wavelength 248nm
- Mask stage MST is movable while holding mask M.
- the mask stage MST holds the mask M by vacuum suction (or electrostatic suction).
- the mask stage MST is in a plane perpendicular to the optical axis AX of the projection optical system PL with the mask M held by the drive of the mask stage drive device MST D including the linear motor controlled by the control device CONT. That is, it can move two-dimensionally in the XY plane and can rotate slightly in the ⁇ Z direction.
- a movable mirror 91 is provided on the mask stage MST.
- a laser interferometer 92 is provided at a position facing the movable mirror 91!
- the position of the mask M on the mask stage MST in the two-dimensional direction and the rotation angle in the ⁇ Z direction are measured in real time by the laser interferometer 92.
- the measurement result of the laser interferometer 92 is output to the control device CONT.
- the control device CONT drives the mask stage drive device MSTD and controls the position of the mask M held by the mask stage MST.
- Projection optical system PL projects and exposes the pattern of mask M onto substrate P at a predetermined projection magnification of 13, and is composed of a plurality of optical elements, which are optical tubes PI C Is retained.
- the projection optical system PL is a reduction system in which the projection magnification j8 is 1 Z4, 1/5, or 1Z8, for example.
- the projection optical system PL may be a unity magnification system or an enlargement system.
- the projection optical system PL may be any of a refractive system that does not include a reflective optical element, a reflective system that does not include a refractive optical element, and a catadioptric system that includes a reflective optical element and a refractive optical element.
- the first optical element LSI closest to the image plane of the projection optical system PL is exposed from the lens barrel PK.
- the substrate stage PST can move the substrate holder PH holding the substrate P on the image plane side of the projection optical system PL.
- the substrate stage PST includes a Z tilt stage 95 that supports the substrate holder PH, and an XY stage 90 that supports the Z tilt stage 95.
- the XY stage 90 is movably supported on the base BP.
- the substrate holder PH is supported on the Z tilt stage 95 and holds the substrate P by, for example, vacuum suction.
- a recess 96 is provided on the substrate holder PH.
- the concave portion 96 is provided with a first holding portion PH1 for holding the substrate P, which will be described in detail later.
- the upper surface 97 around the recess 96 in the substrate holder PH is a flat surface (flat portion) that is substantially the same height (level) as the surface Pa of the substrate P held by the first holding portion PH1.
- the optical path space K1 on the image plane side of the projection optical system PL can be continuously filled with the liquid LQ, the space between the surface Pa of the substrate P held by the first holding part PH1 and the upper surface 97 of the substrate holder PH There may be a difference in level.
- the substrate stage PST is driven by the substrate stage driving device PSTD.
- the substrate stage drive device PSTD includes, for example, a linear motor, and includes an XY drive mechanism that moves the XY stage 90 on the base BP in the X-axis direction, the Y-axis direction, and the ⁇ Z direction, and a voice coil motor, for example.
- a Z drive mechanism for moving the Z tilt stage 95 in the Z-axis direction, ⁇ X direction, and ⁇ Y direction.
- the surface Pa of the substrate P held by the substrate holder PH by driving the Z tilt stage 95 and the XY stage 90 is 6 in the X axis, Y axis, Z axis, 0 X, 0 Y, and ⁇ Z directions.
- a movable mirror 93 is provided on the side surface of the substrate holder PH.
- a laser interferometer 94 is provided at a position facing the movable mirror 93. The position and rotation angle of the substrate P on the substrate holder PH It is measured in real time by the interferometer 94.
- the exposure apparatus EX is an oblique incidence type focus that detects surface position information of the surface Pa of the substrate P supported by the substrate holder PH as disclosed in, for example, Japanese Patent Laid-Open No. 8-37149.
- a leveling detection system (not shown) is provided.
- the focus / leveling detection system detects surface position information (position information in the Z-axis direction and inclination information in the ⁇ X and ⁇ Y directions) of the surface Pa of the substrate P before and during Z or exposure.
- a system using a capacitive sensor may be adopted as the focus / leveling detection system.
- the measurement result of the laser interferometer 94 is output to the control device CONT.
- the detection result of the focus leveling detection system is also output to the control device CONT.
- the control device CONT drives the substrate stage drive device PSTD based on the detection result of the focus / leveling detection system, and adjusts the focus position (Z position) and inclination angle ( ⁇ X, 0 Y) of the substrate P.
- Control to align the surface Pa of the substrate P with the image plane of the projection optical system PL, and based on the measurement result of the laser interferometer 94, in the X-axis direction, Y-axis direction, and ⁇ -Z direction of the substrate P Perform position control.
- the liquid supply mechanism 10 is for supplying the liquid LQ to the image plane side of the projection optical system PL, and connects the liquid supply unit 11 capable of delivering the liquid LQ and one end of the liquid supply unit 11 to the liquid supply unit 11. And a supply pipe 13. The other end of the supply pipe 13 is connected to the nozzle member 70. Inside the nozzle member 70, an internal flow path (supply flow path) that connects the other end of the supply pipe 13 and the supply port 12 is formed.
- the liquid supply unit 11 includes a tank for storing the liquid LQ, a pressure pump, a temperature adjusting mechanism for adjusting the temperature of the supplied liquid LQ, and a filter unit that removes foreign matter in the liquid LQ.
- the liquid supply operation of the liquid supply unit 11 is controlled by the control device CONT. Note that the tank, pressure pump, temperature adjustment mechanism, filter unit, etc. of the liquid supply mechanism 10 are not necessarily equipped with the exposure apparatus EX. Also good.
- the liquid recovery mechanism 20 is for recovering the liquid LQ on the image plane side of the projection optical system PL.
- the liquid recovery unit 21 can recover the liquid LQ, and one end of the liquid recovery unit 21 is connected to the liquid recovery unit 21. And a recovery pipe 23 to be connected. The other end of the recovery pipe 23 is connected to the nozzle member 70. Inside the nozzle member 70, there is an internal flow path (rotating circuit) that connects the other end of the recovery pipe 23 and the recovery port 22. (Collecting flow path) is formed.
- the liquid recovery unit 21 includes, for example, a vacuum system (a suction device) such as a vacuum pump, a gas-liquid separator that separates the recovered liquid LQ and gas, and a tank that stores the recovered liquid LQ. It should be noted that the vacuum system, gas-liquid separator, tank, etc. of the liquid recovery mechanism 20 may be replaced with facilities such as a factory where the exposure apparatus EX is installed. .
- the supply port 12 for supplying the liquid LQ and the recovery port 22 for recovering the liquid LQ are formed on the lower surface 70A of the nozzle member 70.
- the lower surface 70A of the nozzle member 70 is provided at a position facing the surface Pa of the substrate P and the upper surface 97 of the substrate holder PH.
- the nozzle member 70 is an annular member provided so as to surround the side surface of the first optical element LSI, and the supply port 12 is provided on the lower surface 70A of the nozzle member 70 on the first optical element LSI ( A plurality are provided so as to surround the optical axis AX) of the projection optical system PL.
- the recovery port 22 is provided outside the supply port 12 with respect to the first optical element LSI on the lower surface 70A of the nozzle member 70, and is provided so as to surround the first optical element LSI and the supply port 12. It has been.
- the control device CONT drives each of the liquid supply unit 11 and the liquid recovery unit 21.
- the liquid LQ is delivered from the liquid supply unit 11 under the control of the control device CONT
- the liquid LQ delivered from the liquid supply unit 11 flows through the supply pipe 13 and then the supply flow of the nozzle member 70.
- the image is supplied from the supply port 12 to the image plane side of the projection optical system PL.
- the liquid recovery unit 21 is driven under the control device CONT, the liquid LQ on the image plane side of the projection optical system PL flows into the recovery flow path of the nozzle member 70 via the recovery port 22, and the recovery pipe After flowing through 23, the liquid is recovered by the liquid recovery unit 21.
- the controller CONT uses the immersion mechanism 100 to provide the optical path space K1 of the exposure light EL between the projection optical system PL and the substrate P held by the substrate holder PH.
- the substrate P is exposed by irradiating the exposure light EL onto the substrate P through the projection optical system PL and the liquid LQ.
- FIGS. 2 is a side cross-sectional view of the substrate holder PH with the substrate P held
- FIG. 3 is a plan view of the substrate holder PH viewed from above
- FIG. 4 is a view of the substrate holder PH with the substrate P also viewed with upward force.
- FIG. 5 is an enlarged view of the main part of FIG. [0033]
- the substrate holder PH includes a base material PHB and a first holding part PH1 formed on the base material PHB and sucking and holding the substrate P.
- the first holding part PH1 of the substrate holder PH is formed on the base material PHB, and is formed on the base material PHB and the first support part 46 that supports the back side Pb of the board P, and faces the back side Pb of the board P.
- the first peripheral wall portion 42 is provided so as to surround the first support portion 46.
- the first holding part PH1 is arranged inside a recess 96 formed in the substrate holder PH.
- the first support portion 46 is formed in a convex shape, and the back surface Pb of the substrate P is supported by the top surface 46A.
- the first support portion 46 includes a plurality of support pins that are uniformly formed inside the first peripheral wall portion 42.
- the first peripheral wall portion 42 is formed in a substantially circular shape according to the shape of the substrate P, and the upper surface 42A of the first peripheral wall portion 42 is provided to face the peripheral region (edge region) of the back surface Pb of the substrate P. It has been.
- the upper surface 42A of the first peripheral wall portion 42 is a flat surface.
- the upper surface 46A of the first support portion 46 is formed to have the same height as the upper surface 42A of the first peripheral wall portion 42 or slightly higher than the upper surface 42A.
- a first space 31 surrounded by the substrate P, the first peripheral wall portion 42, and the base material PHB is formed on the back surface Pb side of the substrate P held by the first holding portion PH1.
- a first suction port 41 is formed on the base material PHB inside the first peripheral wall portion 42.
- the first suction port 41 is for holding the substrate P by suction, and is provided at a plurality of predetermined positions other than the first support portion 46 on the upper surface of the base material PHB inside the first peripheral wall portion 42. ing.
- a plurality of the first suction ports 41 are uniformly arranged inside the first peripheral wall portion 42.
- 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 negative pressure in the first space 31 surrounded by the substrate P, the first peripheral wall portion 42, and the base material PHB, and includes a vacuum pump.
- the first support portion 46 includes a support pin, and the first holding portion PH1 in this embodiment constitutes a part of a so-called pin chuck mechanism.
- the control device CONT drives the first vacuum system 40 and sucks the gas (air) in the first space 31 surrounded by the substrate P, the first peripheral wall portion 42, and the base material PHB, and this first space. By making 31 a negative pressure, the back surface Pb of the substrate P is sucked and held by the first support portion 46.
- the inner surface of the recess 96 of the substrate holder PH is connected to the upper surface 97 to be connected to the first holding member.
- An inner side surface 98 is formed so as to face the side surface Pc of the substrate P sucked and held by the holding portion PHI.
- a predetermined gap A is formed between the edge portion of the substrate P held by the first holding portion PH1 and the inner side surface 98 (upper surface 97) provided around the substrate P. .
- the gap A is about 0.1 to 1. Omm.
- a step portion 99 is formed along the outer side surface of the first peripheral wall portion 42 inside the recess 96 of the substrate holder PH.
- the step portion 99 includes an upper surface 99A substantially perpendicular to the inner side surface 98 and continuous with the inner side surface 98, and an inner side surface 99S substantially perpendicular to the upper surface 99A and continuous with the upper surface 99A.
- a gap B is formed between the inner side surface 99S of the stepped portion 99 and the outer side surface 42S of the first peripheral wall portion 42 along the outer side surface 42S.
- the gap B is set to about 1. Omm. In this manner, the second space 33 of the gap B is formed outside the first peripheral wall portion 42 on the back surface side of the substrate P held by the first holding portion PH1.
- the outer diameter of the annular first peripheral wall portion 42 is formed smaller than the outer diameter of the substrate P.
- the first peripheral wall portion 42 is provided so as to be inside the edge portion of the substrate P (on the central portion side of the substrate P).
- the edge region of the substrate P overhangs a predetermined amount outside the first peripheral wall portion 42 (see FIG. 5).
- a region of the substrate P that overhangs outside the first peripheral wall portion 42 is appropriately referred to as an “over-hanging portion Hl”.
- the overhang portion HI is about 1.5 mm.
- the step 99 protrudes from the inner surface 98 of the recess 96 toward the first peripheral wall portion 42, and the inner surface 99 S of the step 99 has an inner diameter smaller than the outer diameter of the substrate P. Further, the upper surface 99A of the step 99 is slightly lower than the upper surface 42A of the first peripheral wall 42. For this reason, a part of the overhang portion HI of the substrate P held by the first holding portion PH1 (the outer peripheral edge of the back surface Pb of the substrate P) and the inner edge of the upper surface 99A of the step 99 have a predetermined gap G. Opposite through. In the present embodiment, the gap G is set to 1 to 10 m. The gap G flows through the second space 33 between the first peripheral wall portion 42 and the step portion 99 and the space between the side surface of the substrate P held by the first holding portion PH1 and the inner side surface 98. Forming a road.
- the substrate P in the present embodiment is not cut for alignment.
- a notch NT which is a notch, is formed.
- the outer shape of the substrate P so that the gap between the side surface Pc of the substrate P at the notch NT and the inner surface 98 (upper surface 97) of the substrate holder PH is set to be approximately the same size as the gap A described above.
- the shape of the inner surface 98 (the inner edge of the upper surface 97) is set according to the shape of the notch NT.
- the inner side surface 98 (the inner edge of the upper surface 97) is provided with a convex portion 98N projecting toward the first peripheral wall portion 42 so as to correspond to the shape of the notch portion NT of the substrate P.
- the first peripheral wall portion 42 (upper surface 42A) is provided with a recess 42N corresponding to the shape of the notch portion NT formed in the substrate P.
- the step 99 (upper surface 99A) is provided with a convex portion 99N corresponding to the shape of the notch portion NT formed in the substrate P.
- the concave portion 42N of the first peripheral wall portion 42 is provided at a position facing the convex portion 99N of the step portion 99.
- the gap B is almost the same size as the gap B described above.
- a gap is formed.
- Omm is secured between the entire edge of the substrate P including the notch NT and the inner side surface 98 (upper surface 97), and the first peripheral wall 42
- Omm is secured between the outer side 42S of the plate and the inner side 99S of the step 99.
- the notch portion NT described as an example of the notch portion NT is not used as the notch portion of the substrate P, or when the orientation flat portion (orientation flat portion) is formed on the substrate P as the notch portion.
- Each of the first peripheral wall portion 42, the stepped portion 99, and the inner side surface 98 is shaped according to the outer shape of the substrate P, and between the substrate P and the surrounding inner side surface 98 (upper surface 97).
- a predetermined gap A should be secured, and a predetermined gap B should be secured between the outer side surface 42S of the first peripheral wall portion 42 and the inner side surface 99S of the surrounding step portion 99.
- the first peripheral wall portion 42, the step portion 99, and the inner side surface 98 are respectively provided with a concave portion and a Z or convex portion depending on the notch portion. There is no need to provide a section.
- the substrate holder PH includes a first collection port 51 provided between the outer side surface 42S of the first peripheral wall portion 42 and the inner side surface 99S of the stepped portion 99.
- the first recovery port 51 can recover the liquid LQ, and is provided on the upper surface 54 of the base material PHB between the inner surface 99S of the stepped portion 99 and the outer surface 42S of the first peripheral wall portion 42.
- the first recovery port 51 is provided on the back of the substrate P held by the first holding part PH1. It is provided at a position facing the overhang part HI of the surface Pb. That is, the first recovery port 51 is provided on the inner surface (center side of the substrate P) with respect to the edge portion of the substrate P held by the first holding portion PH1 on the upper surface 54 of the base material PHB.
- the first recovery port 51 is provided outside the first peripheral wall portion 42 and at each of a plurality of predetermined positions along the first peripheral wall portion 42.
- each of the first recovery ports 51 has a substantially circular shape in plan view, and is provided at predetermined intervals at seven locations along the circumferential direction of the first peripheral wall portion 42 on the upper surface 54 of the base material PHB. It has been.
- one first recovery port 51 is also provided inside the recess 42N of the first peripheral wall portion 42 formed according to the notch portion NT of the substrate P.
- a suction device 50 including a vacuum system is connected to each of the first recovery ports 51 via a flow path 52.
- the suction device 50 connected to the first recovery port 51 and the first vacuum system 40 for setting the first space 31 to a negative pressure are independent of each other.
- the control device CONT can individually control the operations of the suction device 50 and the first vacuum system 40, and the suction operation by the suction device 50 and the suction operation by the first vacuum system 40 can be performed independently. it can.
- the surface Pa which is the exposed surface of the substrate P, is coated with a photoresist (photosensitive material).
- the photosensitive material is a photosensitive material for ArF excimer laser and has liquid repellency with respect to the liquid LQ.
- a liquid repellent material such as a fluorine-based resin material may be used as a material for forming the layer.
- the substrate holder PH is subjected to a liquid repellency treatment, and the substrate holder PH has a liquid repellency with respect to the liquid LQ.
- the upper surface 42A and the outer surface 42S of the first peripheral wall portion 42 of the first holding portion PH1 and the upper surface 46A of the first support portion 46 have liquid repellency.
- the upper surface 97 and the inner surface 98 also have liquid repellency.
- the upper surface 99A and the inner side surface 99S of the step portion 99 also have liquid repellency.
- liquid repellent treatment of the substrate holder PH examples include a treatment of coating a liquid repellent material such as a fluorine-based resin material and an acrylic resin material.
- the substrate P to be exposed is loaded (loaded) into the substrate holder PH by the transport system 300 (step SA1).
- the substrate replacement potential 2 includes a position in the vicinity of the transport system 300 and includes a position where the transport system 300 can load (load) and unload (unload) the substrate P with respect to the substrate holder PH.
- the control device CONT uses the substrate stage drive device PSTD to move the substrate stage PST supporting the substrate holder PH to the substrate exchange counter 2 and transfers the substrate by the transfer system 300. Make P loadable.
- the controller CONT holds the substrate P loaded by the first holding portion PH1 of the substrate holder PH, using the first space 31 as a negative pressure space. .
- the back surface Pb of the substrate P supported by the first support portion 46 and the upper surface 42 of the first peripheral wall portion 42 are in contact (adhesion).
- the control device CONT uses the substrate stage driving device PSTD to move the substrate stage PST supporting the substrate holder PH to the exposure processing position g [l for performing exposure (step SA2).
- the exposure processing threshold 1 includes a position immediately below the projection optical system PL.
- the control device CONT starts supplying and collecting liquid LQ using the liquid immersion mechanism 100 with the projection optical system PL and the substrate P (substrate holder PH) facing each other, and the image plane of the projection optical system PL.
- a liquid LQ immersion area LR is formed on the side (step SA3).
- the control device CONT fills the optical path space K1 between the projection optical system PL and the substrate P with the liquid LQ by forming the immersion area LR, and then emits the exposure light EL from the illumination optical system IL.
- the substrate P is subjected to immersion exposure by irradiating the exposure light EL to the substrate P held by the substrate holder PH via the projection optical system PL and the liquid LQ (step SA4).
- the exposure apparatus EX in the present embodiment is a scanning exposure apparatus (so-called scanner ninder stepper) that projects a pattern image of the mask M onto the substrate P while moving the mask M and the substrate P in the X-axis direction (scanning direction). It is.
- a partial pattern image of the mask M is projected into the projection area AR via the liquid LQ in the immersion area LR and the projection optical system PL, and the mask M moves in the X direction (or + X direction).
- the substrate P moves in the + X direction (or -X direction) with respect to the projection area AR at a speed of 13 ⁇ ⁇ ( ⁇ is the projection magnification).
- a plurality of shot areas are set on the top. After the exposure to one shot area is completed, the next shot area is moved to the scanning start position by the stepping movement of the substrate P. Hereinafter, the step-and-scan method is used. While the substrate P is moved, scanning exposure processing is sequentially performed on each shot area.
- the control device CONT stops the liquid supply operation by the liquid supply mechanism 10. Then, the control device CONT collects the liquid LQ remaining on the surface of the substrate P and the upper surface 97 of the substrate holder PH by using the liquid recovery mechanism 20 while holding the substrate P on the substrate holder PH (step SA5). After collecting the liquid LQ remaining on the substrate P surface and the upper surface 97 of the substrate holder PH, the control device CONT uses the substrate stage drive device PSTD to change the substrate stage PST supporting the substrate holder PH to the substrate exchange position. Move to 2 (Step SA6). Then, in the substrate exchange position 2, the substrate P after the exposure processing is unloaded with the substrate holder PH force by the transport system 300 (step SA7).
- the substrate stage driving apparatus PSTD is configured such that the substrate holder PH (substrate) is disposed between the exposure processing threshold 1 for exposing the substrate P and the substrate replacement threshold 2 different from the exposure processing threshold 1. Stage PST) can be moved.
- step SA4 when the edge area Eg of the surface Pa of the substrate P is subjected to immersion exposure, as shown in FIG. 5, one of the immersion areas LR formed on the image plane side of the projection optical system PL is shown.
- the part is formed outside the substrate P. That is, the liquid immersion region LR is formed on the substrate P and the upper surface 97.
- the liquid LQ immersion region LR is formed on the gap A.
- the gap A between the substrate P held by the first holding part PH1 and the upper surface 97 (inner side surface 98) is set to 0.1 to 1. Omm, so the surface of the liquid LQ The tension prevents the liquid LQ from entering the gear A.
- the liquid LQ is prevented from entering the second space 33 via the gear A. Therefore, even when the edge region Eg of the substrate P is exposed, the liquid LQ can be held under the projection optical system PL by the upper surface 97.
- the gap A is reduced, or the upper surface 97 and the inner surface 98 of the substrate holder PH are made liquid repellent, so that the penetration of the liquid LQ from the gap A is suppressed.
- the substrate changes through the gap A formed around the substrate P due to the pressure change of the liquid LQ.
- Liquid LQ may enter the recess 96 in the holder PH.
- the liquid LQ enters the second space 33 through the gap A, the back surface Pb of the substrate P and the upper surface 42A of the first peripheral wall portion 42 are almost in close contact with each other.
- the liquid LQ can be prevented from entering, as shown in FIG. 5, the liquid LQ that has entered the second space 33 is a region outside the first peripheral wall 42 in the back surface Pb of the substrate P, that is, the substrate P. There is a high possibility that it adheres to the overhang part HI of the backside Pb.
- the liquid LQ that has entered from the gap A may adhere to the outer side surface 42S, the inner side surface 98, the upper surface 99A of the stepped portion 99, the inner side surface 99S, the upper surface 54 of the base material PHB, etc. high.
- the liquid LQ that has entered the second space 33 via the gap A can be recovered by driving the suction device 50.
- the suction device 50 When the suction device 50 is driven, the gas around the first recovery port 51 (that is, the gas in the second space 33) is sucked into the first recovery port 51, as shown in the schematic diagram of FIG. That is, when the suction device 50 sucks the gas in the second space 33 through the first recovery port 51, the minute gap G between the overhang portion HI and the step portion 99 of the back surface Pb of the substrate P is formed.
- a gas flow is generated toward the inner side of the substrate P, and a small gap between the inner surface 99S of the step 99 and the outer surface 42S of the first peripheral wall 42 is connected to the first recovery port 51.
- Directional force A gas flow is generated (see arrow yl in Fig. 8). That is, a gas flow guided by the first peripheral wall portion 42 is generated in the second space 33. In other words, in the second space 33 formed in the groove shape of the gap B, a gas flow directed toward the first recovery port 51 is generated along the first peripheral wall portion 42.
- the liquid LQ that has entered the second space 33 through the gear A moves to the first recovery port 51 by the gas flow along the first peripheral wall portion 42 generated by the suction device 50. Specifically, it enters the second space 33 through the gap A, and for example, the liquid LQ attached to the overhanging portion HI of the back surface Pb of the substrate P, the liquid attached to the outer surface 42S of the first peripheral wall portion 42, etc.
- the body LQ and the like move to the first recovery port 51 by the gas flow along the first peripheral wall portion. Then, the liquid LQ that has moved to the first recovery port 51 is recovered through the first recovery port 51.
- the second space 33 having a gap B of about 1 mm is formed around the first peripheral wall portion 42, and a plurality of first recovery ports 51 are provided around the first peripheral wall portion 42 at a predetermined interval.
- a gas flow having a high flow velocity is generated along the first peripheral wall portion 42, and enters the gap A, so that the outer surface 42S of the first peripheral wall portion 42 and the inner surface 9 of the step portion 99 are obtained.
- the liquid LQ adhering to 9S etc. can be recovered by moving to the first recovery port 51.
- a step portion 99 is provided in the recess 96, and a minute gap G is provided between the overhang portion HI of the back surface Pb of the substrate P and the upper surface 99A of the step portion 99.
- Yap G a gas flow with a large flow velocity is generated by force toward the second space 33, and the liquid LQ adhering between the substrate P and the inner surface 98, between the substrate P and the step 99, etc. It can be quickly moved to the second space 33 and recovered from the first recovery port 51.
- the second space 33 is open to the atmosphere via the gap A, even if the gas in the second space 33 is sucked via the first recovery port 51, the second space 33 is not removed via the gap A. Since the gas flows into the space 33 from the outside, a desired gas flow can be generated smoothly.
- the first recovery port 51N is also provided inside the recess 42N formed in a part of the outer surface 42S of the first peripheral wall portion 42, the gap The liquid LQ that has entered the vicinity of the recess 42N via A is also moved to the first recovery port 51N by the gas flow directed toward the recess 42N of the first peripheral wall 42, and passes through the first recovery port 51N. Collected.
- liquid LQ and gas recovered from the first recovery port 51 are placed in the middle of the flow path 52 between the first recovery port 51 and the suction device 50 including the vacuum system.
- a gas / liquid separator is provided to prevent liquid LQ from flowing into the suction arch I device 50.
- the recovery operation of the liquid LQ using the first recovery port 51 is performed after the exposure of the substrate P through the liquid LQ, that is, the process of step SA4 described above is ended. Done later. That is, in the present embodiment, during the exposure of the substrate P through the liquid LQ, the suction device 50 is stopped, and the recovery operation of the liquid LQ using the first recovery port 51 is stopped. By stopping the recovery operation using the first recovery port 51 during exposure, vibration due to the recovery operation of the liquid LQ using the first recovery port 51, poor flatness of the surface of the substrate P, etc. Can be suppressed. Then, after the exposure via the liquid LQ is completed (after step SA4), the first recovery port 51 is operated by performing a recovery operation using the first recovery port 51 while holding the substrate P on the substrate holder PH. Can be used to smoothly recover liquid LQ.
- the recovery operation of the liquid LQ using the first recovery port 51 may be performed after the exposure of the substrate P is finished (after step SA4) and before the substrate P is unloaded from the substrate holder PH. If you can! For example, after the exposure of the substrate P, the recovery operation of the liquid LQ on the substrate P and the substrate holder PH using the liquid recovery mechanism 20 (that is, the operation of step SA5) and the liquid LQ using the first recovery port 51 are performed. The collecting operation may be performed in parallel. In this case, the recovery operation of the liquid LQ using the first recovery port 51 is performed at the exposure processing position 1.
- the substrate holder PH (substrate stage PST) is moved from the exposure processing position 1 to the substrate replacement position 2, and the liquid LQ using the first recovery port 51 is used.
- a collecting operation may be performed. That is, after the exposure of the substrate P, the movement operation of the substrate holder PH and the recovery operation of the liquid LQ using the first recovery port 51 may be performed in parallel.
- the substrate holder PH to the substrate replacement counter 2 by performing the recovery operation of the liquid LQ using the first recovery port 51 during the movement from the exposure processing threshold 1 to the substrate replacement counter 2 It is possible to carry out the unloading of the exposed substrate P.
- the substrate holder PH (substrate stage PST) is moved to the substrate replacement location 2 and then unloaded from the substrate holder PH before the substrate replacement location 2
- the liquid LQ may be collected using the first collection port 51.
- the liquid LQ in the second space 33 outside the first peripheral wall portion 42 is recovered via the first recovery port 51, so that the second space 33 is temporarily set via the gap A. Even if the liquid LQ penetrates the liquid LQ, the liquid LQ enters the first space 31 through the space between the back surface Pb of the substrate P and the upper surface 42A of the first peripheral wall 42, or the liquid LQ enters the back surface Pb ( It is possible to prevent inconveniences such as leaving the state attached to the overhang part HI). Therefore, the occurrence of inconveniences such as the liquid LQ entering the first space 31 flowing into the first vacuum system 40 via the first suction port 41 and causing the first vacuum system 40 to fail can be prevented.
- the liquid LQ permeates between the upper surface 41A of the first support 46 and the back surface Pb of the substrate P, and the flatness of the substrate P deteriorates. Or the board P cannot be held well. Further, it is possible to prevent the occurrence of inconveniences such as the substrate holder PH is left wet and the substrate holder PH is heated, or the substrate holder PH is thermally deformed by the heat of vaporization when the liquid LQ is vaporized. Also, by recovering the liquid LQ using the first recovery port 51, the liquid LQ is not transported by the transport system 300 with the liquid LQ attached to the back surface Pb of the substrate P. It can prevent the damage from spreading, such as adhering or splashing of liquid LQ on the transport path.
- the first recovery port 51 is used to adhere to the overhanging portion HI outside the first peripheral wall portion 42 out of the back surface Pb of the substrate P held by the first holding portion PH1.
- the transfer system 300 gets wet when the substrate P is unloaded, or the back surface Pb of the substrate P and the substrate holder PH are affected by the surface tension of the liquid LQ that has entered the back surface Pb side of the substrate P.
- the upper surface 42A of the first peripheral wall portion 42 adsorbs and the substrate P cannot be exchanged smoothly, inconveniences can be prevented.
- a minute gap B and gap G are formed on the back surface side of the substrate P, and the suction device 50 sucks through the first recovery port 51, whereby the flow toward the first recovery port 51 is achieved. Because of the high speed and the generation of a gas flow, the liquid LQ that has entered through the gap A can be recovered with a simple configuration.
- the size of the overhang portion HI is such that a desired gas flow can be generated and the amount of stagnation at the edge portion of the substrate P can be suppressed to an allowable value or less. It can be set appropriately taking into account the dimensional tolerance of P and the mounting accuracy of the substrate P on the substrate holder PH by the transfer system 300.
- the gap B of the second space 33 is preferably set to 0.5 to 1.5 mm in order to form an air flow having a high flow velocity.
- the liquid LQ in the gap B outside the first peripheral wall portion 42 to the first recovery port 51 by the gas flow along the first peripheral wall portion 42, for example, the upper surface 54 of the substrate PHB and
- the liquid LQ adheres to the corners, corners, etc. (see symbol K in FIG. 5) of the second space 33 formed by the outer side 42S of the first peripheral wall 42 and the inner side 99S of the step 99.
- the liquid LQ at the corner K can be smoothly moved to the first recovery port 51 by the gas flow and recovered.
- the first recovery ports 51 are provided at a plurality of positions at predetermined intervals in the vicinity of the first peripheral wall portion 42 on the upper surface 54 of the base material PHB. Good flow The liquid LQ collected in the corner K can be recovered smoothly.
- the first recovery port 51N is provided also inside the recess 42N, it is possible to prevent the liquid LQ from accumulating inside the recess 42N.
- the suction device 50 sucks the gas through the first recovery port 51N. Even so, there is a high possibility that an area where no gas flow is generated inside the recess 42N (stagnation area) Y, so the liquid LQ accumulated inside the recess 42N is transferred to the first recovery port 51N. It becomes difficult to move.
- the first recovery port 51N is provided inside the recess 42N, the liquid LQ accumulated in the recess 42N can be recovered smoothly.
- the first recovery port 51N may be provided at a position shifted by a predetermined distance a in the circumferential direction of the peripheral wall portion 42. In this way, even when the first recovery port 51N is provided outside the recess 42N, a gas flow can be generated inside the recess 42N. Therefore, the liquid LQ accumulated inside the recess 42N is removed from the first recovery port 51N. Move to 51N and collect.
- the width of the recess 42N is
- the distance ⁇ satisfies the condition of ⁇ ⁇ j8 Z2. In this way, a gas flow can be generated inside the recess 42N.
- a characteristic part of this embodiment is that a second peripheral wall portion 44 that guides the flow of directional gas to the first recovery port 51 is provided outside the first peripheral wall portion 42.
- the same or equivalent components as those in the above-described embodiment are denoted by the same reference numerals, and the description thereof is simplified or omitted.
- FIG. 12 is a plan view of the substrate holder PH according to the second embodiment as viewed from above, and FIG. 13 is an enlarged cross-sectional view of the main part of the substrate holder PH according to the second embodiment.
- the substrate holder PH includes a second peripheral wall portion 44 that guides the flow of gas directed to the first recovery port 51 outside the first peripheral wall portion 42.
- the second peripheral wall portion 44 is substantially annular in plan view, and is provided so as to surround the first peripheral wall portion 42.
- the upper surface 44A of the second peripheral wall portion 44 and the back surface Pb of the substrate P held by the first holding portion PH1 are provided so as to face each other.
- the upper surface 44A of the second peripheral wall portion 44 is slightly lower than the upper surface 42A of the first peripheral wall portion 42.
- the back surface Pb of the substrate P and the upper surface 42A of the first peripheral wall portion 42 come into contact with each other by making the first space 31 a negative pressure space
- the back surface Pb of the substrate P and the upper surface 44A of the second peripheral wall portion 44 are in contact with each other.
- a slight gap (gap) C is provided between them. Since the upper surface 42A of the first peripheral wall portion 42 and the back surface Pb of the substrate P are in contact with each other, the airtightness of the first space 31 is maintained, so that the substrate P is favorably held by the first holding portion PH1.
- the liquid LQ can be prevented from entering the first space 31.
- a gap A of 0.1 to 1. Omm is formed between the edge portion of the substrate P held by the first holding portion PH1 and the inner side surface 98 (upper surface 97). Has been.
- the gap C forms a flow path that circulates through the second space 33A between the first peripheral wall portion 42 and the second peripheral wall portion 44, and the space outside the second space 33A.
- the outer space of the second space 33A includes an atmospheric space including the third space 33B between the inner surface 98 and the outer surface 44S of the second peripheral wall portion 44.
- the second space 33A is a space surrounded by the first peripheral wall portion 42, the second peripheral wall portion 44, the upper surface 54 of the base material PHB, and the substrate P held by the first holding portion PH1, and the gap C and the gap Open to the atmosphere via A.
- a predetermined gap D is formed between the outer side surface 44S and the inner side surface 98 of the second peripheral wall portion 44.
- the gap D is larger than the gap A, for example about 2.5 mm.
- the outer diameter of the annular second peripheral wall portion 44 is formed smaller than the outer diameter of the substrate P.
- the second peripheral wall portion 44 is provided on the inner side (center side of the substrate P) than the edge portion of the substrate P. Then, the edge region of the substrate P overhangs a predetermined amount outside the second peripheral wall portion 44 to form an overhang portion H1.
- a part of the second peripheral wall 44 includes a second space 33A between the first peripheral wall 42 and the second peripheral wall 44 and a space outside the second space 33A.
- a slit portion 53 is provided for circulation to (the atmospheric space including the third space 33B). That is, the second space 33A is open to the atmosphere via the slit portion 53 and the gap C and gap A described above.
- the slit portion 53 is provided at each of a plurality of predetermined positions in the circumferential direction of the second peripheral wall portion 44. It is In the present embodiment, each of the slit portions 53 is provided at seven locations at predetermined intervals in the circumferential direction of the second peripheral wall portion 44. As shown in FIG. 15, the slit portion 53 in the present embodiment is formed to extend in the vertical direction (Z-axis direction), and the lower end portion of the slit portion 53 reaches the base material PHB of the substrate holder PH. . On the other hand, the upper end portion of the slit portion 53 reaches the upper surface 44 A of the second peripheral wall portion 44.
- the second peripheral wall portion 44 in the present embodiment is formed by combining a plurality of circular arc members having a circular arc shape in plan view. By providing a plurality of these circular arc members along the first peripheral wall portion 42, the entire second peripheral wall portion 44 is formed. It is almost ring-shaped.
- a plurality of first recovery ports 51 are provided along the first peripheral wall portion 42 on the upper surface 54 of the base material PHB between the first peripheral wall portion 42 and the second peripheral wall portion 44.
- Each of the first recovery ports 51 is provided between the slit portions 53 adjacent to each other. In other words, each force of the slit portion 53 is provided between the first recovery ports 51 adjacent to each other.
- the liquid LQ that has entered the third space 33B via the gap A is a region outside the second peripheral wall portion 44 in the back surface Pb of the substrate P, that is, the back surface of the substrate P. There is a high possibility that it will adhere to the overhang HI of Pb. Further, the liquid LQ that has entered from the gap A enters the second space 33A through the gap C, and the back surface Pb of the substrate P that forms the second space 33A, the outer surface 42S of the first peripheral wall portion 42, or the first The possibility of adhering to the upper surface 54 of the base material PHB between the first peripheral wall portion 42 and the second peripheral wall portion 44 is high.
- the liquid LQ that has entered the second space 33A via the gap A can be collected by driving the suction device 50.
- the suction device 50 When the suction device 50 is driven, the gas around the first recovery port 51 (the gas in the second space 33A) is sucked into the first recovery port 51, as shown in the schematic diagram of FIG. That is, the suction device 50 sucks the gas in the second space 33A through the first recovery port 51, so that the first recovery port 51 is located in the vicinity of the first recovery port 51 (second space 33A).
- a gas flow is generated (see arrow y2 in Fig. 13).
- the second peripheral wall portion 44 has a function of guiding the flow of the gas facing the first recovery port 51 outside the first peripheral wall portion 42. Therefore, when the suction device 50 sucks through the first recovery port 51, a flow of directional gas is favorably generated in the first recovery port 51. be able to. Further, by providing the second peripheral wall portion 44 through the gap E of about 1 mm outside the first peripheral wall portion 42, a gas flow having a high flow velocity can be generated in the second space 33A. Therefore, the liquid LQ outside the second peripheral wall portion 42 (second space 33A) can be smoothly moved to the first recovery port 51 and recovered by the gas flow. In this case, the liquid LQ collected in, for example, the corner K inside the second space 33A can be more reliably collected.
- the gap E between the first peripheral wall portion 42 and the second peripheral wall portion 44 is preferably set to 0.5 to 1.5 mm in order to generate a gas flow having a high flow velocity.
- the second space 33A is opened to the atmosphere via the gap C, the slit 53, and the gap A! /, So the gas in the second space 33A is passed through the first recovery port 51. Even when the arch I is sucked, the gas flows into the second space 33A from the outside through the gap C and the slit portion 53, so that a desired gas flow can be generated smoothly.
- the gap C is set to a force of 1 to 10 ⁇ m.
- the magnitude thereof is optimized according to the suction force through the first recovery port 51, the viscosity of the liquid LQ, and the like. It is desirable.
- the flow rate of the gas flow in the gap C is sufficiently increased and attached to the overhanging part HI.
- the liquid LQ being drawn can be drawn into the second space 33A and recovered well using the first recovery port 51.
- the recovery operation of the liquid LQ using the first recovery port 51 in the present embodiment is stopped during the exposure of the substrate P, and the exposure of the substrate P is not performed, as in the first embodiment described above. This is executed.
- the first recovery is performed.
- the directional force gas flow is guided to the port 51, a desired gas flow is generated, and the liquid LQ can be well moved to the first recovery port 51 and recovered by the generated gas flow.
- FIG. 16 is a cross-sectional view along the XY plane in the vicinity of the slit portion 53 of the second peripheral wall portion 44.
- the edge of the slit portion 53 is a force that is formed at a substantially right angle, as shown in FIG. 17, the second space 33A force may be tapered so as to gradually narrow toward the third space 33B. Good.
- the edge of the slit portion 53 may be arcuate.
- the second peripheral wall portion 44 has a slit portion 53 as a flow path that circulates between the second space 33A and the outer space, as shown in FIG.
- a hole (through hole) 55 may be provided in a part of the second peripheral wall portion 44.
- the hole 55 has a substantially circular shape, but may have a rectangular shape or other shapes. That is, if the gas can be introduced from the space outside the second space 33A so that the gas flow along the first peripheral wall portion 42 can be generated (if the second space 33A can be opened to the atmosphere), the flow The shape of the path and the position of Z or flow path can be set arbitrarily.
- the gap C force is not provided. It is also possible to generate a gas flow along the first peripheral wall portion 42 by flowing into the first gas.
- a second recovery port 57 having a function equivalent to that of the first recovery port 51 may be provided on the outer side of the second peripheral wall portion 44.
- the second recovery port 57 can be provided on the upper surface 56 of the base material PHB between the first peripheral wall portion 42 and the second peripheral wall portion 44.
- a suction device 50 ′ is connected to the second recovery port 57 via a flow path 52 ′.
- the liquid LQ recovery operation using the second recovery port 57 is stopped during the exposure of the substrate P, and the substrate P is exposed, like the liquid LQ recovery operation using the first recovery port 51. Not executed when not.
- the suction device 50' is weaker than the suction device 50 so as not to decrease the flow rate of the gas generated in the gap C. It is desirable to operate with suction force.
- the suction device 50 ′ is It may be activated so that the liquid LQ that enters and adheres to the third space 33B is collected.
- FIGS. 21 is a side sectional view of the substrate holder PH with the substrate P held
- FIG. 22 is a plan view of a portion of the substrate holder PH viewed from above
- FIG. 23 shows the substrate holder PH with the substrate P held.
- FIG. 24 is an enlarged view of the main part of FIG.
- the substrate holder PH of the present embodiment is formed of a base material PHB, a first holding portion PH1 formed on the base material PHB, for adsorbing and holding the substrate P, and formed on the base material PHB, the first holding portion PH1. And a second holding part PH2 that holds the plate member T by suction so as to surround the periphery of the substrate P held by suction.
- the plate member T is a member different from the base material PHB, and is provided so as to be detachable (exchangeable) with respect to the second holding portion PH2. Further, as shown in FIG. 23, the plate member T is a substantially annular member, and a substantially circular opening TH in which the substrate P can be placed is formed at the center thereof.
- the plate member T held by the second holding part PH2 is disposed so as to surround the periphery of the substrate P held by the first holding part PH1.
- the outer shape of the plate member T is formed in a rectangular shape in plan view so as to follow the shape of the base material PHB.
- each of the front surface Ta and the rear surface Tb of the plate member T is a flat surface (flat portion). Further, 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 part PH2 is substantially flush with the surface Pa of the substrate P held by the first holding part PH1. That is, the plate member T held by the second holding portion PH2 forms a flat surface Ta that is substantially flush with the surface Pa of the substrate P around the substrate P held by the first holding portion PH1.
- the substrate P is held on the first holding part PH1 and held on the second holding part PH2. There may be a step between the plate member T and the surface.
- the first holding portion PH1 of the substrate holder PH is disposed on the base material PHB.
- a second peripheral wall portion 44 is provided outside the first peripheral wall portion 42. The width of the upper surface 44A of the second peripheral wall portion 44 in the present embodiment is formed larger (wider) than in the second embodiment described above.
- a slit portion 53 is provided in each of a plurality of predetermined positions in the circumferential direction of the second peripheral wall portion 44.
- the first recovery port 51 is provided at each of a plurality of predetermined positions along the first peripheral wall portion 42. The respective forces of the slit portions 53 are provided between the first recovery ports 51 adjacent to each other.
- the second holding portion PH2 of the substrate holder PH includes a substantially annular third peripheral wall portion 62 formed on the base material PHB so as to surround the second peripheral wall portion 44, and an outer side of the third peripheral wall portion 62.
- a convex second support portion 66 formed.
- the second support portion 66 supports the back surface Tb of the plate member T, and a plurality of second support portions 66 are uniformly formed between the third peripheral wall portion 62 and the fourth peripheral wall portion 63.
- the second support portion 66 also includes a plurality of support pins, like the first support portion 46.
- the third peripheral wall portion 62 is provided outside the second peripheral wall portion 44 with respect to the first space 31, and the fourth peripheral wall portion 63 is provided further outside the third peripheral wall portion 62.
- the third peripheral wall portion 62 is formed in a substantially annular shape according to the shape of the opening TH of the plate member.
- the fourth peripheral wall 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 third peripheral wall portion 62 is formed so as to face the inner edge region (inner edge region) near the opening TH in the rear surface Tb of the plate member T.
- the upper surface 63A of the fourth peripheral wall 63 is formed to face the outer edge region (outer edge region) of the rear surface Tb of the plate member T.
- the fourth space 32 surrounded by the base material PHB, the third and fourth peripheral wall portions 62, 63 and the back surface Tb of the plate member T 32 Is formed.
- a second suction port 61 is formed on the base material PHB between the third peripheral wall 62 and the fourth peripheral wall 63.
- the second suction port 61 is for holding the plate member T by suction, Between the third peripheral wall portion 62 and the fourth peripheral wall portion 63, they are respectively provided at a plurality of predetermined positions other than the second support portion 66 on the upper surface of the base material PHB.
- a plurality of second suction ports 61 are uniformly arranged between the third peripheral wall portion 62 and the fourth peripheral wall portion 63.
- 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 used to create a negative pressure in the fourth space 32 surrounded by the base material PHB, the third and fourth peripheral walls 62 and 63, and the back surface Tb of the plate member T. Includes pump.
- the second support portion 66 includes a support pin, and the second holding portion PH2 in the present embodiment also constitutes a part of a so-called pin chuck mechanism, like the first holding portion PH1.
- the third and fourth peripheral wall parts 62, 63 function as outer wall parts surrounding the outside of the fourth space 32 including the second support part 66, and the control device CONT drives the second vacuum system 60, By suctioning the gas (air) inside the fourth space 32 surrounded by the base material PHB, the third and fourth peripheral wall portions 62, 63 and the plate member T, the fourth space 3 2 is made negative pressure. The plate member T is sucked and held by the second support portion 66.
- the first vacuum system 40 for making the first space 31 negative and the second vacuum system 60 for making the fourth space 32 negative are independent of each other.
- the controller CONT can individually control the operations of the first vacuum system 40 and the second vacuum system 60.
- the controller CONT can perform the suction operation on the first space 31 by the first vacuum system 40 and the second vacuum system 60.
- the suction operation for the four spaces 32 can be performed independently.
- the control device CONT controls the first vacuum system 40 and the second vacuum system 60, respectively, and makes the pressure in the first space 31 and the pressure in the fourth space 32 different from each other.
- the outer shape of the substrate P (notch portion NT so that a gap similar to the gap A is formed between the substrate P and the plate member T in the notch portion NT.
- the shape of the plate member T is set according to the shape).
- the plate member is provided with a protrusion 150 that protrudes toward the inside of the opening TH so as to correspond to the shape of the notch NT of the substrate P.
- the edge of the substrate P including the notch NT A gap ⁇ of 0.1 to 1. Omm is secured between the entire area of the plate and the plate member T. If the notch NT is very small, the plate member T should not have the protrusion 150.
- the back surface Pb of the substrate P and a part of the upper surface 44A of the second peripheral wall portion 44 face each other, and the back surface Tb of the plate member T and the upper surface 44A of the second peripheral wall portion 44 It is designed to face other areas. That is, the upper surface 44A of the second peripheral wall portion 44 is disposed immediately below the gap A formed between the substrate P and the plate member T.
- a predetermined gap C is formed between the back surface Pb of the substrate P and the upper surface 44A of the second peripheral wall portion 44, and the back surface Tb of the plate member T and the upper surface 44A of the second peripheral wall portion 44
- a predetermined gap (gap) F is formed between the two.
- a second collection port 57 having a function equivalent to that of the first recovery port 51 is provided on the further outer side of the second peripheral wall portion 44.
- a suction device 50 ′ is connected to the second recovery port 57 via a flow path 52 ′, and when the suction device 50 ′ sucks through the second recovery port 57, a force is applied to the second recovery port 57. Generate a gas flow. The directional gas flows to the second recovery port 57 along the outer surface 44AS of the second peripheral wall portion 44, and the liquid LQ outside the second peripheral wall portion 44 moves to the second recovery port 57 and is recovered.
- the second recovery port 57 is provided in the fifth space 34 on the back surface Tb side of the plate member T held by the second holding portion PH2.
- the second holding portion PH2 holds the plate member T so that the fifth space 34 is formed on the back surface Tb side of the plate member T, and the second collection port 57 is held by the second holding portion PH2.
- the plate member T is provided on the rear surface Tb side.
- the second recovery port 57 is provided on the upper surface 58 of the base material PHB between the outer side surface 44S of the second peripheral wall portion 44 and the inner side surface 62T of the third peripheral wall portion 62. Yes.
- the inner diameter of the annular third peripheral wall 62 of the second holding part PH2 is larger than the diameter of the opening TH of the plate member T.
- the inner edge region in the vicinity of the opening TH of the plate member T is larger than the third peripheral wall 62.
- Overhang H2 is formed by overhanging a predetermined amount on the inner side (substrate P side).
- the second collection port 57 is provided at a position facing the overhanging portion H2 of the back surface Tb of the plate member T held by the second holding portion PH2.
- the second recovery port 57 is formed on the outer surface 44 of the second peripheral wall 44 on the upper surface 58 of the base material PHB between the second peripheral wall 44 and the third peripheral wall 62. It is provided at a predetermined position near S.
- the second recovery port 57 is provided at each of a plurality of predetermined positions along the second peripheral wall portion 44. Each of the second recovery ports 57 is provided between the slit portions 53 adjacent to each other.
- the fifth space 34 is open to the atmosphere via the gap A and the gap F, and a gas flow can be smoothly generated in the gap F and the fifth space 34.
- the suction force force of the liquid LQ to the gap F is set.
- the suction device 50 connected to the first recovery port 51 and the suction device 50 ′ connected to the second recovery port 57 are independent of each other.
- the control device CONT can individually control the operation of each of the suction devices 50 and 50 ′, and the suction operation through the first recovery port 51 by the suction device 50 and the second recovery port 57 by the suction device 50 ′.
- the suction operation performed can be performed independently.
- the control device CONT can control the suction device 50 and the suction device 50 ′, respectively, so that the suction force via the first recovery port 51 and the suction force via the second recovery port 57 can be made different from each other. .
- the upper surface 63 A of the fourth peripheral wall 63 is a flat surface, and the fourth peripheral wall 63 is slightly lower than the second support 66.
- a predetermined gap is formed between the upper surface 63A of the fourth peripheral wall 63 and the lower surface Tb of the plate member.
- the plate member T is formed larger than the outer shape of the fourth peripheral wall portion 63, and the outer edge region of the plate member T overhangs a predetermined amount outside the fourth peripheral wall portion 63! /. If the liquid LQ on the plate member T flows out of the plate member T, there is a risk that it will adhere to the movable mirror 93 provided on the side surface of the substrate holder PH.
- the plate member T is outside the fourth peripheral wall 63.
- the liquid LQ flowing out of the plate member T is prevented from adhering to the movable mirror 93 because it overhangs outside the movable mirror 93.
- the fourth space 32 is made negative by the second vacuum system 60, so that the fourth space 32 A gas flow is created from the outside to the inside through the directional gap. Therefore, the liquid LQ that has flowed out of the plate member T is drawn into the fourth space 32 through the gap before flowing to the side surface of the substrate holder PH including the movable mirror 93 (before adhering). Therefore, the liquid LQ adheres to the moving mirror 93. Can be prevented more reliably.
- Each of the front surface Ta, the back surface Tb, and the side surface Tc of the plate member T is coated with a liquid repellent material having liquid repellency with respect to the liquid LQ.
- the liquid repellent material include fluorine-based resin materials such as polytetrafluoroethylene and acrylic resin materials.
- the plate member T when the plate member T is formed of quartz, the plate member T can be coated with “CYTOP (R)” manufactured by Asahi Glass.
- the plate member T itself may be formed of a liquid-repellent material (such as a fluorine-based material)!
- the upper surface 62A and the inner side surface 62T of the third peripheral wall portion 62 of the second holding portion PH2 and the upper surface 66 ⁇ of the second support portion 66 also have liquid repellency.
- the liquid repellent treatment of the substrate holder include a treatment of coating the above-described fluorine-based resin material, acrylic resin material, topcoat layer forming material, and the like.
- the third peripheral wall portion 62 is substantially the same height as or slightly lower than the second support portion 66, and the plate member ⁇ is held in the state where the second support portion 66 holds the plate member ⁇ .
- the back surface Tb and the upper surface 62A of the third peripheral wall portion 62 are in close contact with each other.
- the entered liquid LQ flows into the second space 33 through the gap C as shown in FIG. And may enter the fifth space 34 through the gap F.
- the liquid LQ that has entered at least one of the second space 33 and the fifth space 34 via the gap A drives at least one of the suction device 50 and the suction device 50 '. It can be recovered.
- the suction device 50 when the suction device 50 is driven, in the vicinity of the first recovery port 51 (second space 33), the gas that is directed toward the first recovery port 51 along the first peripheral wall portion 42 is present. A flow is generated, and the liquid LQ can be recovered through the first recovery port 51 by this gas flow.
- the second peripheral wall portion 44 has a function of guiding the flow of directional gas to the first recovery port 51 outside the first peripheral wall portion 42 as in the second embodiment. Therefore, when the suction device 50 sucks through the first recovery port 51, it is possible to satisfactorily generate a directional gas flow at the first recovery port 51.
- the slit 53 formed in the gap C and the second peripheral wall 44 circulates between the second space 33 and the outer space (atmospheric space). That is, since the second space 33 is opened to the atmosphere via the gap C, the slit portion 53, and the gap A, even when the gas in the second space 33 is sucked through the first recovery port 51, the gap C, Since gas flows from the outside of the second space 33 through the slit portion 53 and the gap A, a desired gas flow can be generated smoothly.
- the suction device 50 ′ when the suction device 50 ′ is driven, a gas flow directed toward the second recovery port 57 is generated in the vicinity of the second recovery port 57 (the fifth space 34).
- the liquid Q can be recovered through the second recovery port 57 by the flow of the gas.
- the second peripheral wall portion 44 has a function of guiding the flow of directional gas to the second recovery port 57 outside the second peripheral wall portion 44. Therefore, when the suction device 50 ′ sucks through the second recovery port 57, a directional gas flow can be favorably generated in the second recovery port 57.
- the fifth space 34 of the gear j set to about lmm is formed between the second peripheral wall portion 44 and the third peripheral wall portion 62, and the suction device 50 ′ is in the second recovery state.
- the suction device 50 ′ is in the second recovery state.
- gap J is preferably set to about 0.5 to 1.5 mm in order to generate a gas flow with a high flow velocity.
- the fifth space 34 is open to the atmosphere via the gap F, the slit portion 53, and the gap A, even when the gas in the fifth space 34 is sucked through the second recovery port 57, Since the gas flows from the outside of the fifth space 34 via the gap F, the slit portion 53, and Z or the gap A, a desired gas flow can be generated smoothly.
- the gap F is set to 1 to: LOmm like the gap C, and a gas flow directed from the outside to the inside of the fifth space 34 is generated in the gap F.
- the liquid LQ remaining in the gas is drawn into the fifth space 34 by the gas flow, and the second recovery port It moves smoothly to 57 and is collected.
- the first recovery port 51 and the second recovery port 57 can recover the liquid LQ that has entered from the gap A between the substrate P and the plate member T.
- the second peripheral wall 44 has a function of guiding the gas flow directed toward the first recovery port 51 and a function of guiding the gas flow toward the second recovery port 57! Therefore, it is possible to generate a desired gas flow.
- the control device CONT drives the suction device 50 and the suction device 50 'and uses the first recovery port 51 to drive the liquid LQ.
- the LQ recovery operation and the liquid LQ recovery operation using the second recovery port 57 can be performed in parallel.
- the control device CONT when collecting the liquid LQ that has entered through the gap A after the exposure of the substrate P is completed, the control device CONT first drives the suction device 50 'to use the liquid LQ using the second collection port 57. After performing the recovery operation, the suction device 50 can be driven to perform the recovery operation of the liquid LQ using the first recovery port 51. Alternatively, the controller CONT performs the recovery operation of the liquid LQ using the second recovery port 57 after performing the recovery operation of the liquid LQ using the first recovery port 51.
- the suction force force of the liquid LQ to the gap F is set. Therefore, since the liquid LQ that has entered from the gap A can be smoothly drawn into the back surface Tb side of the plate member T, the inconvenience that the liquid LQ that has entered from the gap A flows into the back surface Pb side of the substrate P can be prevented. .
- the back surface Pb of the substrate P and the upper surface 42A of the first peripheral wall portion 42 are in contact (adhesion), so that the liquid LQ that has entered through the gap A and the back surface Pb of the substrate P Intrusion into the first space 31 through the space between the upper surface 42A of the peripheral wall portion 42 is prevented.
- the slit portion 53 of the second peripheral wall portion 44 is also omitted and the gear is C and gap F force
- the gas flow along the second peripheral wall portion 44 and the third peripheral wall portion 62 may be generated by the inflowing gas!
- the suction device 50 sucks the gas through the first recovery port 51, thereby generating a flow of directional gas at the first recovery port 51.
- a gas supply device having a gas outlet capable of generating a gas flow along the outer surface 42S of the first peripheral wall portion 42 is provided, and the first recovery port 51 is provided by the gas blown from the gas outlet. It is also possible to generate a gas flow that is directed toward the surface. Similarly, the gas flow directed toward the second recovery port may be generated by the gas blown out from the gas outlet.
- the position and Z or number of the first recovery ports 51 are not limited to the above example.
- the first recovery port 51 is a force provided on the upper surface 54 of the base material PHB on the outside of the first peripheral wall portion 42. It may be provided on a part of the outer surface 42S.
- the first recovery port 51 is provided in the vicinity of the first peripheral wall portion 42, but is provided at a position away from the first peripheral wall portion 42. It may be. Even if the first recovery port 51 is provided at a position away from the first peripheral wall portion 42, the first recovery port 51 can be used as long as the position is opposed to the overhanging portion HI of the substrate P. Liquid LQ can be collected.
- the first recovery port 51 is provided at each of a plurality of predetermined positions along the first peripheral wall portion 42. There may be one recovery port 51.
- the recess 42N is formed in the first peripheral wall portion 42 in accordance with the notch portion NT formed in the substrate P.
- the force that forms the first recovery port 51N inside the recess 42N The recesses 42N are provided at predetermined intervals at a plurality of locations on the first peripheral wall 42, and all or a part of the first recovery port 51 is formed in the recess 42N. You may arrange each inside. In this case, when one first recovery port 51 is provided and no cover is provided, the first recovery port inside the recess 42 N formed in the first peripheral wall portion 42 in alignment with the notch portion NT formed in the substrate P is used. If you leave only the mouth 51N.
- a pinch mechanism is employed for attracting and holding the substrate P, but other chuck mechanisms may be employed.
- a pin chuck mechanism may be used for suction holding of the plate member T, and other chuck mechanisms may be used.
- a vacuum suction mechanism may be employed to hold both the substrate P and the plate member T, or at least one of them may be held using another mechanism such as an electrostatic suction mechanism.
- the height of the upper surface 42 of the first peripheral wall portion 42 is set lower than the upper surface 46A of the first support portion 46.
- the upper surface 46A of the first support 46 may be the same. In this case, the upper surface 46A of the first support portion 46 and the back surface Pb of the substrate P are more closely attached, so that the infiltration of the liquid LQ into the first space 31 can be more reliably suppressed.
- the height of the upper surface 62A of the third peripheral wall portion 62 is set lower than the height of the upper surface 66A of the second support portion 66. 2
- the height of the upper surface 66A of the support 66 may be the same.
- the upper surface 62A of the third peripheral wall portion 62 and the back surface Pb of the substrate P are more closely attached, so that the liquid LQ can be prevented from entering the fourth space 32.
- the liquid LQ in the present embodiment is pure water.
- Pure water has the advantage that it can be easily obtained in large quantities at semiconductor manufacturing factories and the like, and has no adverse effect on the photoresist, optical elements (lenses), etc. on the substrate P.
- pure water has no adverse effects on the environment, and the impurity content is extremely low. it can. If the purity of pure water supplied by the factory is low, the exposure apparatus may have an ultrapure water production device.
- the refractive index n of pure water (water) for exposure light EL with a wavelength of about 193 nm is said to be about 1.44, and ArF excimer laser light (wavelength 193 nm) is used as the light source for exposure light EL.
- ArF excimer laser light wavelength 193 nm
- lZn on the substrate P that is, the wavelength is shortened to about 134 nm, and high resolution can be obtained.
- the depth of focus is expanded to about n times, that is, about 1.44 times compared to the air, it is only necessary to ensure the same depth of focus as that used in the air. In this case, the numerical aperture of the projection optical system PL can be further increased, and this also improves the resolution.
- the liquid LQ is not limited purely. For example, a high refractive index liquid having a refractive index of 1.6 to 2.0 may be used.
- an optical element LSI is attached to the tip of the projection optical system PL, and the optical characteristics of the projection optical system PL such as aberrations (spherical aberration, coma, etc.) are reduced by this optical element LSI. Adjustments can be made.
- 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. Or it may be a plane parallel plate that can transmit the exposure light EL.
- the space between the projection optical system PL and the surface of the substrate P is filled with the liquid LQ.
- a cover glass having parallel plane plate force is attached to the surface of the substrate P. It may be configured to fill liquid LQ in a wet state.
- the optical path space on the image plane side of the optical element at the tip is filled with the liquid, but as disclosed in International Publication No. 2004Z019128, the tip optical system.
- the tip optical system By adopting a projection optical system that fills the optical path space on the mask side of the optical element with liquid.
- 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. So
- liquid LQ for example, perfluorinated polyether (PFPE) that can transmit F laser light.
- PFPE perfluorinated polyether
- a fluorinated fluid such as fluorinated oil may be used.
- a lyophilic treatment is performed by forming a thin film with a substance having a molecular structure having a small polarity including fluorine, for example, at a portion in contact with the liquid LQ.
- liquid LQ is stable against the photoresist coated on the projection optical systems PL and Z or the substrate P, which is transparent to the exposure light EL and has a refractive index as high as possible.
- 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 a semiconductor wafer for manufacturing semiconductor devices. Not only glass substrates for display devices, ceramic wafers for thin film magnetic heads, masks or reticles used in exposure equipment (synthetic quartz, silicon wafers), etc. are applicable.
- the exposure apparatus EX in addition to a step-and-scan type scanning exposure apparatus (scanning stepper) that scans and exposes the mask M pattern by synchronously moving the mask M and the substrate P, a mask is used.
- the present invention can also be applied to a step-and-repeat projection exposure apparatus (steno) in which the pattern of the mask M is collectively exposed while M and the substrate P are stationary, and the substrate P is sequentially moved stepwise.
- a light-transmitting mask in which a predetermined light-shielding pattern (or phase pattern 'dimming pattern) is formed on a light-transmitting substrate is used.
- a predetermined light-shielding pattern or phase pattern 'dimming pattern
- an electronic mask that forms a transmission pattern, a reflection pattern, or a light emission pattern based on electronic data of a pattern to be exposed may be used. good.
- an exposure apparatus (lithography system) that forms line and space patterns on the wafer W by forming interference fringes on the wafer W.
- the present invention can also be applied to.
- a reduced image of the first pattern is projected with the first pattern and the substrate P substantially stationary, for example, a refraction type that does not include a reflective element at a 1Z8 reduction magnification. It can also be applied to an exposure apparatus that uses a projection optical system) to perform batch exposure on the substrate P. In this case, after that, with the second pattern and the substrate P almost stationary, a reduced image of the second pattern is collectively exposed on the substrate P by partially overlapping the first pattern using the projection optical system. It can also be applied to a stitch type batch exposure apparatus. In addition, the stitch type exposure apparatus can also be applied to a step 'and' stitch type exposure apparatus in which at least two patterns are partially overlapped and transferred on the substrate P, and the substrate P is sequentially moved.
- the present invention can also be applied to a twin stage type exposure apparatus disclosed in Japanese Patent Laid-Open Nos. 10-163099, 10-214783, and 2000-505958.
- a substrate for holding a substrate can also be applied to an exposure apparatus including a stage, a reference member on which a reference mark is formed, and a measurement stage equipped with various photoelectric sensors.
- an exposure apparatus that locally fills the liquid between the projection optical system PL and the substrate P is adopted.
- the present invention is disclosed in JP-A-6-124873, Liquid immersion in which exposure is performed with the entire surface of the substrate to be exposed immersed in the liquid as disclosed in JP-A-10-303114 and US Pat. No. 5,825,043. It is also applicable to exposure equipment.
- the type of the exposure apparatus EX is not limited to an exposure apparatus for manufacturing a semiconductor element that exposes a semiconductor element pattern on the substrate P.
- An exposure apparatus for manufacturing a liquid crystal display element or a display, a thin film magnetic head, an imaging It can be widely applied to an exposure apparatus for manufacturing a device (CCD) or a reticle or mask.
- each stage PST and MST may be a type that moves along a guide or a guideless type. /.
- each stage PST and MST is such that a magnet mute with a two-dimensionally arranged magnet and an armature unit with a two-dimensionally arranged coil are opposed to each other by electromagnetic force.
- a planar motor for driving PST and MST may be used.
- either one of the magnet unit or armature unit is connected to the stage PST or MST, and the other of the magnet unit or armature unit is provided on the moving surface side of the stage PST or MST!
- reaction force generated by the movement of the substrate stage PST is not transmitted to the projection optical system PL, as described in JP-A-8-166475 (USP 5,528,118). May be mechanically released to the floor (ground).
- the exposure apparatus EX of the present embodiment includes each constituent element recited in the claims of the present application. It is manufactured by assembling the various subsystems including it so as to maintain the predetermined mechanical accuracy, electrical accuracy, and optical accuracy. In order to ensure these various accuracies, before and after this assembly, various optical systems are adjusted to achieve optical accuracy, various mechanical systems are adjusted to achieve mechanical accuracy, For electrical systems, adjustments are made to achieve electrical accuracy.
- the assembly process to the exposure system includes mechanical connections, electrical circuit wiring connections, and pneumatic circuit piping connections between the various subsystems. There must be an assembly process for each subsystem before the assembly process from the various subsystems to the exposure system! When the assembly process of the various subsystems to the exposure apparatus is completed, comprehensive adjustment is performed to ensure various accuracies for the exposure apparatus as a whole. It is desirable to manufacture the exposure apparatus in a clean room where the temperature and cleanliness are controlled.
- a microdevice such as a semiconductor device is shown in FIG. 25, step 201 for designing the function and performance of the microdevice, step 202 for producing a mask (reticle) based on this design step, and device basis.
- step 203 for manufacturing the substrate as a material Step 204 including processing for exposing the mask pattern onto the substrate by the exposure apparatus EX of the above-described embodiment, Device assembly step (including dicing process, bonding process, and packaging process) 205 It is manufactured through inspection step 206 and the like.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
- Optics & Photonics (AREA)
- Toxicology (AREA)
- Atmospheric Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- 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
Claims
Priority Applications (14)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020197000812A KR20190006097A (ko) | 2004-12-15 | 2005-12-14 | 기판 유지 장치, 노광 장치 및 디바이스 제조방법 |
EP05816647.1A EP1837896B1 (en) | 2004-12-15 | 2005-12-14 | Substrate holding apparatus, exposure apparatus and device manufacturing method |
EP18191677.6A EP3428724A1 (en) | 2004-12-15 | 2005-12-14 | Exposure apparatus and device fabricating method |
KR1020157017190A KR101771334B1 (ko) | 2004-12-15 | 2005-12-14 | 기판 유지 장치, 노광 장치 및 디바이스 제조방법 |
KR1020137031821A KR101585310B1 (ko) | 2004-12-15 | 2005-12-14 | 기판 유지 장치, 노광 장치 및 디바이스 제조방법 |
KR1020177022986A KR101939525B1 (ko) | 2004-12-15 | 2005-12-14 | 기판 유지 장치, 노광 장치 및 디바이스 제조방법 |
US11/792,924 US9224632B2 (en) | 2004-12-15 | 2005-12-14 | Substrate holding apparatus, exposure apparatus, and device fabricating method |
KR1020077004198A KR101411123B1 (ko) | 2004-12-15 | 2005-12-14 | 기판 유지 장치, 노광 장치 및 디바이스 제조방법 |
JP2006548888A JP5181475B2 (ja) | 2004-12-15 | 2005-12-14 | 基板保持装置、露光装置、及びデバイス製造方法 |
IL183882A IL183882A0 (en) | 2004-12-15 | 2007-06-12 | Substrate holding apparatus, exposure apparatus, and device fabricating method |
HK08101366.6A HK1110701A1 (en) | 2004-12-15 | 2008-02-05 | Substrate holding apparatus, exposure apparatus and device manufacturing method |
US14/981,067 US9690206B2 (en) | 2004-12-15 | 2015-12-28 | Substrate holding apparatus, exposure apparatus, and device fabricating method |
US15/601,202 US9964860B2 (en) | 2004-12-15 | 2017-05-22 | Substrate holding apparatus, exposure apparatus, and device fabricating method |
US15/967,622 US20180246417A1 (en) | 2004-12-15 | 2018-05-01 | Substrate holding apparatus, exposure apparatus, and device fabricating method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-363478 | 2004-12-15 | ||
JP2004363478 | 2004-12-15 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US11/792,924 A-371-Of-International US9224632B2 (en) | 2004-12-15 | 2005-12-14 | Substrate holding apparatus, exposure apparatus, and device fabricating method |
US14/981,067 Continuation US9690206B2 (en) | 2004-12-15 | 2015-12-28 | Substrate holding apparatus, exposure apparatus, and device fabricating method |
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WO2006064851A1 true WO2006064851A1 (ja) | 2006-06-22 |
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ID=36587906
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PCT/JP2005/022968 WO2006064851A1 (ja) | 2004-12-15 | 2005-12-14 | 基板保持装置、露光装置、及びデバイス製造方法 |
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US (4) | US9224632B2 (ja) |
EP (4) | EP3428724A1 (ja) |
JP (2) | JP5181475B2 (ja) |
KR (5) | KR101939525B1 (ja) |
CN (1) | CN100576444C (ja) |
HK (1) | HK1110701A1 (ja) |
IL (1) | IL183882A0 (ja) |
TW (2) | TWI493600B (ja) |
WO (1) | WO2006064851A1 (ja) |
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-
2005
- 2005-12-14 EP EP18191677.6A patent/EP3428724A1/en not_active Withdrawn
- 2005-12-14 TW TW101137624A patent/TWI493600B/zh not_active IP Right Cessation
- 2005-12-14 KR KR1020177022986A patent/KR101939525B1/ko active IP Right Grant
- 2005-12-14 KR KR1020137031821A patent/KR101585310B1/ko active IP Right Grant
- 2005-12-14 WO PCT/JP2005/022968 patent/WO2006064851A1/ja active Application Filing
- 2005-12-14 CN CN200580042429A patent/CN100576444C/zh not_active Expired - Fee Related
- 2005-12-14 US US11/792,924 patent/US9224632B2/en not_active Expired - Fee Related
- 2005-12-14 KR KR1020157017190A patent/KR101771334B1/ko active IP Right Grant
- 2005-12-14 EP EP17181443.7A patent/EP3285282A1/en not_active Withdrawn
- 2005-12-14 EP EP15178030.1A patent/EP2995997B1/en not_active Not-in-force
- 2005-12-14 EP EP05816647.1A patent/EP1837896B1/en not_active Not-in-force
- 2005-12-14 TW TW094144222A patent/TWI424465B/zh not_active IP Right Cessation
- 2005-12-14 KR KR1020077004198A patent/KR101411123B1/ko active IP Right Grant
- 2005-12-14 KR KR1020197000812A patent/KR20190006097A/ko not_active Application Discontinuation
- 2005-12-14 JP JP2006548888A patent/JP5181475B2/ja not_active Expired - Fee Related
-
2007
- 2007-06-12 IL IL183882A patent/IL183882A0/en unknown
-
2008
- 2008-02-05 HK HK08101366.6A patent/HK1110701A1/xx not_active IP Right Cessation
-
2011
- 2011-05-30 JP JP2011121109A patent/JP5440553B2/ja not_active Expired - Fee Related
-
2015
- 2015-12-28 US US14/981,067 patent/US9690206B2/en not_active Expired - Fee Related
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2017
- 2017-05-22 US US15/601,202 patent/US9964860B2/en not_active Expired - Fee Related
-
2018
- 2018-05-01 US US15/967,622 patent/US20180246417A1/en not_active Abandoned
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