WO2006062188A1 - 露光装置、露光方法及びデバイス製造方法 - Google Patents
露光装置、露光方法及びデバイス製造方法 Download PDFInfo
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- WO2006062188A1 WO2006062188A1 PCT/JP2005/022634 JP2005022634W WO2006062188A1 WO 2006062188 A1 WO2006062188 A1 WO 2006062188A1 JP 2005022634 W JP2005022634 W JP 2005022634W WO 2006062188 A1 WO2006062188 A1 WO 2006062188A1
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- liquid
- substrate
- exposure
- measurement
- exposure apparatus
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
- H01L21/0271—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers
- H01L21/0273—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers characterised by the treatment of photoresist layers
- H01L21/0274—Photolithographic processes
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/708—Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
- G03F7/70908—Hygiene, e.g. preventing apparatus pollution, mitigating effect of pollution or removing pollutants from apparatus
- G03F7/70925—Cleaning, i.e. actively freeing apparatus from pollutants, e.g. using plasma cleaning
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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
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70216—Mask projection systems
- G03F7/70341—Details of immersion lithography aspects, e.g. exposure media or control of immersion liquid supply
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/708—Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
- G03F7/7085—Detection arrangement, e.g. detectors of apparatus alignment possibly mounted on wafers, exposure dose, photo-cleaning flux, stray light, thermal load
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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
- G03F7/70908—Hygiene, e.g. preventing apparatus pollution, mitigating effect of pollution or removing pollutants from apparatus
- G03F7/70916—Pollution mitigation, i.e. mitigating effect of contamination or debris, e.g. foil traps
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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
- G03F7/70975—Assembly, maintenance, transport or storage of apparatus
Definitions
- Exposure apparatus Exposure apparatus, exposure method, and device manufacturing method
- the present invention relates to an exposure apparatus that exposes a substrate, an exposure method, and a device manufacturing method.
- an exposure apparatus that projects and exposes a pattern formed on a mask onto a photosensitive substrate is used. It is done.
- This exposure apparatus has a mask stage that supports a mask and a substrate stage that supports the substrate, and projects an image of the mask pattern onto the substrate via the 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. In order to meet this demand, it is desired to further increase the resolution of the exposure apparatus.
- Patent Document 1 Pamphlet of International Publication No. 99Z49504
- an immersion exposure apparatus performs exposure processing and measurement processing via a liquid, if the liquid is contaminated or deteriorated, the result of the exposure processing or measurement processing is affected. There is a risk of effect. Therefore, it is important to grasp the state of the liquid and take appropriate measures.
- the present invention has been made in view of such circumstances, and provides an exposure apparatus, an exposure method, and a device manufacturing method capable of accurately grasping a liquid state (properties, components, etc.). With the goal.
- the present invention employs the following configurations corresponding to FIGS. 1 to 13 shown in the embodiments.
- the parenthesized symbols attached to each element It is only an example and each element is not limited.
- an exposure apparatus that exposes the substrate (P) by irradiating the substrate (P) with exposure light (EL) via an optical member (LSI), An optical path space (K1) between an object (ST1, ST2, DP, etc.) different from the substrate disposed on the light emitting side of the optical member, and the optical member and the object (ST1, ST2, DP, etc.) Liquid immersion mechanism (12, 22 etc.) to fill the liquid (LQ) with liquid immersion area (LR) formed on an object (ST1, ST2, DP, etc.) different from the substrate (P) An exposure apparatus (EX) provided with a measurement apparatus (60) for measuring at least one of the properties and components of the liquid (LQ) is provided.
- the state of the liquid can be grasped without contact with the substrate for exposure, a treatment for bringing the liquid into a desired state can be performed.
- the exposure processing and measurement processing performed can be performed with high accuracy.
- an exposure apparatus that exposes the substrate (P) by irradiating the substrate (P) with exposure light (EL) via an optical member (LSI),
- An immersion mechanism (1) that fills a predetermined space (K1) on the light emitting side of the optical member with a liquid (LQ), and a measuring device (60) that measures at least one of the properties and components of the liquid (LQ).
- the liquid immersion mechanism (1) has a flow path (13, 23) through which the liquid (LQ) flows, and the measuring device (60) has a first position (C1 in the flow path (13, 23)).
- An exposure apparatus (EX) that measures the liquid (LQ) at the second position (C2) and the liquid (LQ) at the second position (C2) is provided.
- the respective states of the liquid at the first position and the liquid at the second position in the flow path of the liquid immersion mechanism can be grasped, so that the liquid is brought into a desired state.
- the exposure process and the measurement process via the liquid can be performed with high accuracy.
- an exposure method for exposing a substrate (P) through a liquid (LQ), which is an object different from the substrate (P) (ST1, ST2, DP, etc.) The first step (SA1) for forming the immersion area (LR) on the top and the liquid (with the immersion area (LR) formed on an object (ST1, ST2, DP, etc.) different from the substrate (P) ( LQ) second step (SA2, SA3), third step (SA15) for adjusting the exposure conditions based on the inspection results, and on the substrate (P) under the adjusted exposure conditions.
- the substrate (P) is passed through the liquid (LQ) in the formed immersion area (LR).
- SA7 fourth step of exposing the substrate by irradiating exposure light (EL).
- the liquid immersion region is formed in advance using an object different from the substrate, and the state of the liquid used for the liquid immersion exposure is ascertained. Therefore, the exposure process and the measurement process can be performed with high accuracy.
- An exposure method including detecting a state and exposing the substrate by forming an immersion region on the substrate based on the detection result is provided.
- the liquid is brought into a desired state.
- the exposure process and measurement process through the liquid can be performed with high accuracy.
- a device manufacturing method using the exposure apparatus (EX) of the above aspect there is provided a device manufacturing method using the exposure apparatus (EX) of the above aspect.
- a device can be manufactured using an exposure apparatus that can accurately perform exposure processing and measurement processing via a liquid.
- a device manufacturing method including a step of exposing a substrate by the exposure method of the above aspect, a step of developing the exposed substrate, and a step of processing the developed substrate.
- a device can be manufactured using an exposure method that can accurately perform exposure processing and measurement processing via a liquid.
- FIG. 1 is a schematic block diagram that shows an exposure apparatus according to a first embodiment.
- FIG. 2 A plan view of the stage as viewed from above.
- FIG. 3 is a diagram showing a state where the immersion area is moving between the substrate stage and the measurement stage.
- ⁇ 4 It is a schematic configuration diagram showing a liquid supply unit.
- FIG. 5 is a schematic configuration diagram showing a measuring device.
- FIG. 6 is a flowchart for explaining an example of an exposure sequence.
- FIG. 7 is a diagram showing a state in which the liquid on the substrate is being measured.
- FIG. 8 shows an example of a substrate.
- FIG. 9 is a diagram showing another example of the substrate.
- FIG. 10 shows an exposure apparatus according to a second embodiment.
- FIG. 11 shows an exposure apparatus according to a third embodiment.
- FIG. 12 shows an exposure apparatus according to a fourth embodiment.
- FIG. 13 is a flowchart showing an example of a semiconductor device manufacturing process.
- Ultra pure Water maker 173... Deaerator, 174 ⁇ Filter, 400, 500, 600 ⁇ “Sensor, AR... Projection area, C1... First position, 2... Second position, CONT... Control Device, DP ... Dummy substrate, EL ... Exposure light, EX ... Exposure device, INF ... Notification device, ⁇ 1 ... Optical path space, LK ... Function liquid, LR ... Immersion area, LQ ... Liquid, MRY ... Storage device, P ... Substrate, PL ... Projection optical system, ST1 ... Substrate stage, ST2 "'Measurement stage Invention BEST MODE FOR CARRYING OUT
- FIG. 1 is a schematic block diagram that shows an exposure apparatus according to the first embodiment.
- dew The optical apparatus EX includes a mask stage MST that can move while holding the mask M, and a substrate stage ST1 that can move while holding the substrate P in the substrate holder PH.
- An optical measuring instrument that optically measures the exposure process is installed, and the measurement stage ST2 that can be moved independently of the substrate stage ST1 and the mask M held by the mask stage MST are exposed to the exposure light EL.
- the control device CONT is connected to a notification device INF that notifies information related to the exposure process.
- the notification device INF includes a display device (display device), an alarm device that issues an alarm (warning) using sound or light, and the like.
- a storage device MRY for storing information related to exposure processing is connected to the control device CONT.
- the exposure apparatus EX of the present embodiment is an immersion exposure apparatus to which an immersion method is applied in order to improve the resolution by substantially shortening the exposure wavelength and substantially increase the depth of focus.
- an immersion mechanism 1 is provided to fill 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.
- the liquid immersion mechanism 1 is provided in the vicinity of the image plane of the projection optical system PL.
- the nozzle member 70 has a supply port 12 for supplying the liquid LQ and a recovery port 22 for recovering the liquid LQ.
- the liquid supply mechanism 10 that supplies the liquid LQ to the image plane side of the projection optical system PL via the supply port 12 and the liquid on the image plane side of the projection optical system PL via the recovery port 22 provided in the nozzle member 70 And a liquid recovery mechanism 20 for recovering LQ.
- the nozzle member 70 is formed in an annular shape so as to surround the first optical element LSI closest to the image plane of the projection optical system PL among the plurality of optical elements constituting the projection optical system PL.
- the exposure apparatus EX includes 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 onto the substrate P.
- a local immersion method is adopted in which a liquid LQ immersion area LR that is larger than the projection area AR and smaller than the substrate P is locally formed.
- the exposure apparatus EX is between the lower surface LSA of the first optical element LSI closest to the image plane of the projection optical system PL and the upper surface of the substrate P arranged on the image plane side of the projection optical system PL.
- the optical path space K1 is filled with the liquid LQ, the liquid LQ between the projection optical system PL (first optical element LSI) and the substrate P, and the projection optics
- a pattern image of the mask M is projected onto the substrate P by irradiating the substrate P with the exposure light EL that has passed through the mask M through the system PL (first optical element LSI).
- the control device CONT supplies a predetermined amount of liquid LQ onto the substrate P using the liquid supply mechanism 10 and collects a predetermined amount of the liquid LQ on the substrate P using the liquid recovery mechanism 20, thereby A liquid LQ immersion area LR is locally formed on the top.
- the exposure apparatus EX includes a measuring apparatus 60 that measures at least one (liquid state) of the properties and components of the liquid LQ that forms the immersion region LR.
- the measuring device 60 measures at least one of the properties and components of the liquid L Q filled between the projection optical system PL and the object disposed on the image plane side of the projection optical system PL.
- the measuring device 60 measures the liquid LQ recovered by the liquid recovery mechanism 20.
- the liquid supply mechanism 10 includes a functional liquid supply device 120 capable of supplying a functional liquid having a predetermined function different from the liquid LQ for forming the liquid immersion region LR. It is.
- the mask M and the substrate P are scanned in such a manner that the pattern formed on the mask M is exposed to the substrate P while moving in different directions (reverse directions) in the scanning direction.
- a case of using a type exposure apparatus (so-called scanning stepper) will be described as an example.
- the synchronous movement direction (scanning direction) of the mask M and the substrate P in the horizontal plane is the X axis direction
- the direction orthogonal to the X axis direction is the Y axis direction (non-scanning direction) and the X axis in the horizontal plane.
- the direction perpendicular to the Y-axis direction and coincident with the optical axis AX of the projection optical system PL is the Z-axis direction.
- the rotation (tilt) directions around the X, Y, and Z axes are defined as 0 X, ⁇ , and ⁇ Z directions, respectively.
- the “substrate” here includes a substrate such as a semiconductor wafer coated with a photosensitive material (resist), and the “mask” includes a reticle on which a device pattern to be projected onto the substrate is formed. .
- the illumination optical system IL includes an exposure light source, an optical integrator that equalizes the illuminance of a light beam emitted from the exposure light source, a condenser lens that collects 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. A 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.
- the light EL can be, for example, far ultraviolet light (DUV light) such as emission lines (g-line, h-line, i-line) and KrF excimer laser light (wavelength 248 nm) emitted from a mercury lamp camera, ArF excimer laser light ( Vacuum ultraviolet light (VUV light) such as wavelength 193 nm) and F laser light (wavelength 157 nm)
- DUV light far ultraviolet light
- VUV light Vacuum ultraviolet light
- F laser light Wavelength 157 nm
- pure water is used as the liquid LQ that forms the immersion region LR.
- Pure water is not only ArF excimer laser light, but also, for example, far ultraviolet light (D UV light) such as bright lines (g-line, h-line, i-line) and KrF excimer laser light (wavelength 248 nm) that emits mercury lamp force. Can also be transmitted.
- 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 that moves together with the mask stage MST is fixed on the mask stage MST.
- a laser interferometer 92 is provided at a position facing the moving 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 driving device MSTD based on the measurement result of the laser interferometer 92, and controls the position of the mask M held by the mask stage MST!
- Projection optical system PL projects an image of the pattern of mask M onto substrate ⁇ at a predetermined projection magnification ⁇ .
- Projection optical system PL includes a plurality of optical elements, and these optical elements are held by lens barrel PK.
- the projection optical system PL is a reduction system whose projection magnification j8 is 1Z4, 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 is closest to the image plane of the projection optical system PL, and is exposed from the lens barrel PK.
- the substrate stage STl includes a substrate holder PH that holds the substrate P.
- the substrate stage ST1 is disposed on the image plane side of the projection optical system PL, and is movable on the base member BP on the image plane side of the projection optical system PL.
- the substrate holder PH holds the substrate P by, for example, vacuum suction.
- a concave portion 96 is provided on the substrate stage ST1, and the substrate holder PH for holding the substrate P is disposed in the concave portion 96.
- the upper surface 95 of the substrate stage ST1 other than the recess 96 is a flat surface (flat portion) that is substantially the same height (flat surface) as the upper surface of the substrate P held by the substrate holder PH. /!
- Substrate stage ST1 is mounted on base member BP in a state where substrate P is held via substrate holder PH by driving a substrate stage drive device SD1 including a linear motor controlled by a control device CONT. It can move two-dimensionally in the XY plane and can rotate slightly in the ⁇ Z direction. Further, the substrate stage ST1 can move in the Z-axis direction, the 0X direction, and the ⁇ Y direction. Therefore, the upper surface of the substrate P supported by the substrate stage ST1 can move in directions of six degrees of freedom in the X axis, Y axis, Z axis, 0 X, ⁇ Y, and ⁇ Z directions.
- a movable mirror 93 that moves together with the substrate stage ST1 is fixed on the side surface of the substrate stage ST1.
- a laser interferometer 94 is provided at a position facing the moving mirror 93. The position and rotation angle of the substrate P on the substrate stage ST 1 in the two-dimensional direction are measured in real time by the laser interferometer 94.
- the exposure apparatus EX is, for example, disclosed in Japanese Patent Application Laid-Open No. 8-37149, and is supported by a substrate stage ST1 such as V, and is an oblique incidence type focus that detects surface position information of the upper surface of the substrate P. 'Equipped with a leveling detection system (not shown).
- the focus leveling detection system detects surface position information (position information in the Z-axis direction and inclination information of the substrate P in the ⁇ X and ⁇ Y directions). Note that the focus leveling detection system may detect the surface position information of the substrate P via the liquid LQ in the liquid immersion area LR. V, and without the liquid LQ outside the liquid immersion area LR. The surface position information of the substrate P is detected, and the surface position information of the substrate P is detected via the liquid LQ and the surface position information of the substrate P is detected without the liquid LQ. And may be used in combination.
- the focus leveling detection system may employ a method using a capacitive sensor. 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 Based on the detection result of the single leveling detection system, the substrate stage drive device SD 1 is driven to control the focus position (Z position) and tilt angle ( ⁇ X, ⁇ ⁇ ) of the substrate P.
- the top surface of the substrate P is aligned with the image plane of the projection optical system PL, and the position control of the substrate P in the X-axis direction, the Y-axis direction, and the ⁇ Z direction is performed based on the measurement result of the laser interferometer 94.
- the measurement stage ST2 is equipped with various optical measuring instruments (including measurement members) that optically measure the exposure process.
- Measurement stage ST2 is arranged on the image plane side of projection optical system PL, and is movable on base member BP on the image plane side of projection optical system PL.
- Measurement stage ST2 can be moved two-dimensionally in the XY plane on the base material BP with the optical measuring instrument mounted by driving the measurement stage drive device SD2, which includes a linear motor controlled by the control device CONT. And can be rotated slightly in the ⁇ Z direction.
- the measurement stage ST2 can move in the Z-axis direction, ⁇ X direction, and ⁇ Y direction.
- the measurement stage ST2 can move in directions of six degrees of freedom in the X-axis, Y-axis, Z-axis, 0 0, ⁇ Y, and ⁇ direction, similarly to the substrate stage ST1.
- a movable mirror 98 that is movable together with the measurement stage ST2 is fixed to the side surface of the measurement stage ST2.
- a laser interferometer 99 is provided at a position facing the movable mirror 98. The position and rotation angle of the measurement stage ST2 in the 2D direction are measured in real time by the laser interferometer 99, and the control device CONT controls the position of the measurement stage ST2 based on the measurement result of the laser interferometer 99. To do.
- the control device CONT can move the substrate stage ST1 and the measurement stage ST2 independently of each other on the base BP by using the stage driving devices SD1 and SD2.
- the control device CONT moves the substrate stage ST1 below the projection optical system PL, thereby holding the upper surface 95 of the substrate stage ST1 or the upper surface of the substrate P held by the substrate stage ST1 and the lower surface of the projection optical system PL.
- the control device CONT can make the upper surface 97 of the measurement stage ST2 and the lower surface LSA of the projection optical system PL face each other by moving the measurement stage ST2 below the projection optical system PL.
- the substrate stage ST1 and the measurement stage ST2 are provided side by side, and the upper surface 95 of the substrate stage ST1 including the upper surface of the substrate P and the upper surface 9 of the measurement stage ST2 are provided. It is provided so that it is almost the same height as 7.
- FIG. 2 is a plan view of the substrate stage ST1 and the measurement stage ST2 as viewed from above.
- a reference member 300 is provided on the upper surface 97 of the measurement stage ST2 as an optical measuring instrument (measuring member).
- the reference member 300 determines the XY between the projection position of the pattern image and the detection reference of the substrate alignment system (not shown). Used when measuring the positional relationship (baseline amount) in a plane.
- a first reference mark MFM and a second reference mark PFM are formed on the upper surface 301 of the reference member 300 in a predetermined positional relationship.
- the first reference mark MFM is detected by a VRA (visual reticle alignment) type mask alignment system as disclosed in, for example, Japanese Patent Laid-Open No.
- the VRA mask alignment system irradiates the mark with light, performs image processing on the mark image data captured by a CCD camera, etc., and measures the mark position.
- the second fiducial mark PFM is detected by an FIA (Field 'Image' Alignment) type substrate alignment system as disclosed in, for example, Japanese Patent Laid-Open No. 4-65603.
- the FIA-type substrate alignment system irradiates the target mark with a broadband detection light beam that does not expose the photosensitive material on the substrate P, and the image of the target mark formed on the light-receiving surface by the reflected light from the target mark is inconsistent.
- the image of the index shown (the index pattern on the index plate provided in the substrate alignment system) is imaged using an image sensor (CCD, etc.), and the image signal is processed to measure the mark position. To do.
- an optical measuring instrument for example, uneven illuminance is measured as disclosed in JP-A-57-117238, or JP-A-2001-267239.
- an upper plate constituting a part of the unevenness sensor 400 for measuring the amount of fluctuation in the transmittance of the exposure light EL of the projection optical system PL An upper plate constituting a part of such an aerial image measurement sensor 500 and an upper plate constituting a part of such an irradiation amount sensor (illuminance sensor) 600 disclosed in Japanese Patent Laid-Open No. 11-16816 Is provided.
- the upper surfaces 401, 501, and 601 of the upper plate of the sensors 400, 500, and 600 are placed!
- the first reference mark MFM formed on the reference member 300 is detected by the mask alignment system via the projection optical system PL and the liquid LQ
- the second reference mark PFM is It is detected by the substrate alignment system without passing through the projection optical system PL and the liquid LQ.
- the immersion exposure process is performed in which the substrate P is exposed by irradiating the substrate P with the exposure light EL via the projection optical system PL and the liquid LQ
- measurement using the exposure light EL is performed.
- the unevenness sensor 400, the aerial image measurement sensor 500, the irradiation amount sensor 600, etc. that perform processing receive the exposure light EL via the projection optical system PL and the liquid LQ in response to the immersion exposure processing.
- the measurement stage ST2 is a dedicated stage for performing a measurement process related to the exposure process, and does not hold the substrate P.
- the substrate stage ST1 is not equipped with an optical measuring instrument that performs measurements related to exposure processing.
- the measurement stage ST2 is disclosed in more detail in, for example, Japanese Patent Application Laid-Open No. 11-135400 and European Patent Publication No. 1,041,357.
- each of the sensors 400, 500, and 600 may be, for example, a part of the optical system mounted on the measurement stage ST2, or the entire sensor mounted on the measurement stage ST2. ⁇ .
- the optical measuring instrument mounted on the measuring stage ST2 is not limited to the above-described sensors 400, 500, 600 and the reference member 300, and may be an optical measuring instrument (measuring member) that performs measurement processing related to exposure processing.
- an arbitrary one can be mounted on the measurement stage ST2.
- some of the above-described sensors 400, 500, 600, the reference member 300, and the like may be provided on the substrate stage ST1.
- the measurement stage ST2 disposed on the image plane side of the projection optical system PL has a predetermined region 100 formed so as not to contaminate the liquid LQ.
- the predetermined area 100 is set in a part of the upper surface 97 of the measurement stage ST2.
- the predetermined region 100 is a region other than where the optical measuring devices 300, 400, 500, 600 are provided in the upper surface 97 of the measurement stage ST2, and the upper surface 97 of the measurement stage ST2. Almost in the middle Is set in the department.
- the size of the predetermined area 100 is set to be larger than the immersion area LR.
- the predetermined region 100 is substantially flush with the upper surfaces 301, 401, 501, and 601 of the optical measuring instruments 300, ⁇ , 500, and ⁇ .
- the upper surface 97 of the measurement stage ST2 includes the upper surface of the predetermined region 100 and the upper surfaces 301, 401, 501 and 601 of the optical measuring instruments 300, 400, 500 and 600.
- a predetermined process is performed on a part of the upper surface 97 of the measurement stage ST2, and a predetermined area 100 that does not contaminate the liquid LQ is formed by the predetermined process.
- “does not contaminate the liquid LQ” means that when the liquid LQ is placed on the predetermined region 100, the surface force of the predetermined region 100 is also a contaminant (metal, organic ion, inorganic ion) containing foreign matter in the liquid LQ.
- Etc. means a state in which elution (contamination) is suppressed below a predetermined allowable amount.
- the predetermined region 100 is formed of a material force that does not substantially generate contaminants in the liquid LQ when in contact with the liquid LQ. Therefore, even if the liquid LQ contacts the predetermined area 100, contamination of the liquid LQ is prevented. Since the predetermined area 100 is larger than the liquid immersion area LR, when the liquid LQ liquid immersion area LR is formed on the upper surface 97 of the measurement stage ST2 including the predetermined area 100, the liquid immersion area LR is set to the predetermined area 100. By forming it inside the region 100, contamination of the liquid LQ can be suppressed.
- ceramics is used for the base material that forms the upper surface 97 of the measurement stage ST2, and the base material (ceramics) that forms the upper surface 97 as a treatment not to contaminate the liquid LQ.
- PFA tetrafluoroethylene (CF) and perfluoroalkoxy
- a treatment (surface treatment) for coating a copolymer with tylene is applied.
- the treatment for covering the PFA is appropriately referred to as “PFA treatment”.
- the predetermined area 100 is formed by performing the PFA process on a part of the upper surface 97 of the measurement stage ST2, a contaminant (metal) containing foreign substances in the liquid LQ from the predetermined area 100 is formed. Elution (contamination) of organic ions, inorganic ions, etc.). Therefore, even if the predetermined region 100 and the liquid LQ are in contact with each other, the contamination of the liquid LQ is prevented and the influence on the liquid LQ is reduced.
- the PFA has liquid repellency (water repellency) with respect to the liquid (water) LQ, and the liquid immersion mechanism 1 is used even when the liquid immersion area LR is formed on the predetermined area 100.
- Immersion area LR shape is large It is possible to maintain the texture and the like in a desired state.
- the operation of removing (collecting) the liquid LQ from the predetermined area 100 is performed, it is possible to prevent the liquid LQ from remaining on the predetermined area 100.
- a part of the upper surface 97 of the measurement stage ST2 is subjected to a processing force S that does not contaminate the liquid LQ! / Swing force Photometer 300, 400, 500,
- the entire surface of the upper surface 97 of the measurement stage ST2 including the upper surfaces 301, 401, 501, and 601 of 600 may be treated so as not to contaminate the liquid LQ.
- the area other than the one where the optical measuring instruments 300, 400, 500, 600 are provided is subjected to PFA processing, and the optical measuring instruments 300, 400, 500, 600
- the top surfaces 301, 401, 501, and 601 should be coated with a material other than PFA.
- a material for coating the upper surfaces 301, 401, 501, 6001 of the optical meter 300, 400, 500, 600 the liquid LQ is not contaminated and has liquid repellency with respect to the liquid LQ and transmits light. It is preferable to use a material having properties.
- An example of such a material is “Cytop (registered trademark)” manufactured by Asahi Glass Co., Ltd.
- the immersion area LR is arranged in an area other than the predetermined area 100 on the upper surface 97 of the measurement stage ST2, the contamination of the liquid LQ can be suppressed, and the immersion area LR The shape and size can be maintained in a desired state. Further, when the operation of removing the liquid LQ from the upper surface 97 of the measurement stage ST2 is performed, it is possible to prevent the liquid LQ from remaining on the upper surface 97. In addition, when the upper surface (for example, 301) of the optical measuring instrument is subjected to the contamination prevention treatment, at least a part of the upper surface can be set as the predetermined region 100.
- the material used for the surface treatment of the predetermined region 100 is not limited to PFA, and any material that does not contaminate the liquid LQ can be used, and the upper surface of the measurement stage S 2 can be used. It can be appropriately selected depending on the base material for forming 97 and the physical properties (type) of the liquid LQ used. Also, here, the force that forms the predetermined region 100 by applying surface treatment to a part of the upper surface 97 of the measurement stage ST2, for example, an opening (concave) is formed in a part of the upper surface 97 of the measurement stage ST2. , A plate-like member with PFA isotropic force inside the recess And the upper surface of the plate-like member may be the predetermined region 100.
- the upper surface of the plate-like member is preferably a flat surface, and each of the optical measuring instruments It is desirable that the upper surface 97 of the measurement stage ST2 including the upper surfaces 301, 401, 501, and 601 is substantially flush with the upper surface 97.
- FIG. 3 is a diagram illustrating a state in which the liquid LQ immersion region LR is moving between the substrate stage ST1 and the measurement stage ST2.
- the immersion area LR formed on the image plane side of the projection optical system PL (under the first optical element LSI) can move between the substrate stage ST1 and the measurement stage ST2. It has become.
- the control device CONT uses the stage drive devices SD1 and SD2 to bring the substrate stage ST1 and the measurement stage ST2 close to or in contact with each other and directly below the projection optical system PL.
- the substrate stage ST1 and measurement stage ST2 are moved together in the XY plane within the region including the position.
- the control device CONT moves between the substrate stage ST1 and the measurement stage ST2 together, thereby causing the projection optical system PL to move between at least one of the upper surface 95 of the substrate stage ST1 and the upper surface 97 of the measurement stage ST2.
- the immersion area LR can be moved between the upper surface 95 of the substrate stage ST1 and the upper surface 97 of the measurement stage ST2.
- the optical path space K1 on the image plane side of the projection optical system PL is filled with the liquid LQ.
- the immersion area LR can be moved between the substrate stage ST1 and the measurement stage ST2.
- the liquid supply mechanism 10 supplies the liquid LQ to the image plane side of the projection optical system PL.
- Liquid supply mechanism 10 includes liquid supply unit 11 capable of delivering liquid LQ, and liquid supply unit 11 And a supply pipe 13 for connecting the one end thereof.
- a valve 13B for opening and closing the flow path of the supply pipe 13 is provided. The operation of the valve 13B is controlled by the control device CONT.
- 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 mechanism 10 supplies pure water
- the liquid supply unit 11 includes a pure water production device 16 and a temperature control device that adjusts the temperature of the supplied liquid (pure water) LQ. It has 17 mag.
- the liquid supply unit 11 may include a tank for storing the liquid LQ, a pressurizing pump, a filter unit for removing foreign substances in the liquid LQ, and the like. The liquid supply operation of the liquid supply unit 11 is controlled by the control device CONT.
- a pure water production apparatus a pure water production apparatus in a factory where the exposure apparatus EX is arranged may be used without providing the exposure apparatus EX with a pure water production apparatus.
- the tank, pressure pump, filter unit, etc. of the liquid supply mechanism 10 need not all be provided in the exposure apparatus main body EX, but may be replaced with equipment at the factory where the exposure apparatus main body EX is installed. Yes.
- the valve 13B provided in the supply pipe 13 passes through the flow path of the supply pipe 13 when the drive source (power supply) of the exposure apparatus EX (control apparatus CONT) stops due to, for example, a power failure. It is a so-called normal close system that mechanically closes. This prevents the liquid LQ from leaking from the supply port 12 even when an abnormality such as a power failure occurs.
- the liquid recovery mechanism 20 recovers the liquid LQ on the image plane side of the projection optical system PL.
- the liquid recovery mechanism 20 includes a liquid recovery unit 21 that can recover the liquid LQ, and a recovery pipe 23 that connects one end of the liquid recovery unit 21 to the liquid recovery unit 21.
- a valve 23B for opening and closing the flow path of the recovery pipe 23 is provided! The operation of valve 23B is controlled by the control device CONT.
- the other end of the recovery pipe 23 is connected to the nozzle member 70.
- An internal flow path (recovery flow path) that connects the other end of the recovery pipe 23 and the recovery port 22 is formed inside the nozzle member 70.
- the liquid recovery unit 21 includes, for example, a vacuum system (suction device) such as a vacuum pump, a gas-liquid separator that separates the recovered liquid LQ and gas, and a tank that stores the recovered liquid LQ.
- a vacuum system suction device
- gas-liquid separator that separates the recovered liquid LQ and gas
- a tank that stores the recovered liquid LQ.
- the vacuum system, gas-liquid separator, tank, etc. of the liquid recovery mechanism 20 are all However, it is not necessary to use the exposure apparatus main body EX, and facilities such as a factory in which the exposure apparatus main body EX is installed may be substituted.
- 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 that can face the upper surface of the substrate P, the upper surface 95 of the substrate stage ST1, and the upper surface 97 of the measurement stage ST2.
- the nozzle member 70 is an annular member provided so as to surround the side surface of the first optical element LSI
- the supply port 12 is provided on the lower surface 70A of the nozzle member 70 on the first optical element LSI (projection) of the projection optical system PL.
- a plurality are provided so as to surround the optical axis AX) of the optical system PL.
- the recovery port 22 is provided on the lower surface 70A of the nozzle member 70 away from the supply port 12 with respect to the first optical element LSI, and surrounds the first optical element LSI and the supply port 12. Is provided.
- the control device CONT supplies a predetermined amount of the liquid LQ onto the substrate P using the liquid supply mechanism 10, and collects a predetermined amount of the liquid LQ on the substrate P using the liquid recovery mechanism 20.
- the liquid LQ immersion region LR is locally formed on the substrate P.
- 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 path of the nozzle member 70. And is supplied from the supply port 12 to the image plane side of the projection optical system PL.
- the liquid recovery unit 21 When 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 is collected. After flowing through the pipe 23, the liquid is recovered by the liquid recovery unit 21.
- the liquid LQ recovered by the liquid recovery mechanism 20 is returned to the liquid supply unit 11 of the liquid supply mechanism 10. That is, the exposure apparatus EX of the present embodiment includes a circulation system that circulates the liquid LQ between the liquid supply mechanism 10 and the liquid recovery mechanism 20.
- the liquid LQ returned to the liquid supply unit 11 of the liquid supply mechanism 10 is purified by the pure water production apparatus 16 and then supplied again to the image plane side (substrate P) of the projection optical system PL.
- the liquid LQ recovered by the liquid recovery mechanism 20 may be returned to the liquid supply mechanism 10 or a part thereof may be returned.
- the liquid LQ recovered by the liquid recovery mechanism 20 is transferred to the liquid supply mechanism 10.
- the liquid LQ or tap water supplied from another supply source may be purified by the pure water production apparatus 16 and then supplied to the image plane side of the projection optical system PL.
- the structure of the liquid immersion mechanism 1 such as the nozzle member 70 is not limited to the above-described structure, for example, European Patent Publication No. 1420298, International Publication No. 2004Z055803, International Publication No. 2004/05 7589, Those described in International Publication No. 2004Z057590 and International Publication No. 2005/029559 can also be used.
- the liquid supply unit 11 includes a pure water production device 16 and a temperature control device 17 that adjusts the temperature of the liquid LQ produced by the pure water production device 16.
- the pure water production apparatus 16 includes, for example, a pure water production device 161 that purifies water containing suspended solids and impurities to produce pure water of a predetermined purity, and further contains impurities from the pure water produced by the pure water production device 161. And an ultrapure water production device 162 for producing high purity pure water (ultra pure water).
- the pure water maker 1 61 (or ultra pure water maker 162) is equipped with liquid reforming members such as ion exchange membranes and particle filters, and liquid reformers such as ultraviolet light irradiation devices (UV lamps). These liquid reforming member and liquid reforming apparatus adjust the specific resistance value of the liquid, the amount of foreign matter (fine particles, bubbles), the total organic carbon, the amount of viable bacteria, and the like to desired values.
- liquid reforming members such as ion exchange membranes and particle filters
- liquid reformers such as ultraviolet light irradiation devices (UV lamps).
- the liquid LQ recovered by the liquid recovery mechanism 20 is returned to the liquid supply unit 11 of the liquid supply mechanism 10.
- the liquid LQ collected by the liquid recovery mechanism 20 is supplied to the pure water production device 16 (pure water production device 161) of the liquid supply unit 11 via the return pipe 18.
- the return pipe 18 is provided with a first valve 18B that opens and closes the flow path of the return pipe 18.
- the pure water production apparatus 16 purifies the liquid LQ returned through the return pipe 18 using the liquid reforming member and the liquid reforming apparatus, and then supplies the purified liquid LQ to the temperature control apparatus 17.
- a functional liquid supply device 120 is connected to the pure water production device 16 (pure water production device 161) of the liquid supply unit 11 via a supply pipe 19.
- the functional liquid supply device 120 can supply a functional liquid LK having a predetermined function different from the liquid LQ for forming the liquid immersion region LR.
- the functional liquid supply device 120 supplies the functional liquid LK having a cleaning action and / or a sterilizing action.
- the functional liquid LK for example, ozone water, an aqueous solution or a water solution containing a surfactant, an antibacterial agent, a bactericidal agent, a sterilizing agent, etc. Organic solvents can be used.
- peroxy hydrogen water is used as the functional liquid LK.
- the supply pipe 19 is provided with a second valve 19B that opens and closes the flow path of the supply pipe 19.
- control device CONT When the control device CONT operates the first valve 18B to open the flow path of the return pipe 18 and supplies the liquid LQ, the control device CONT operates the second valve 19B to close the flow path of the supply pipe 19 and Stop supplying LK. On the other hand, when the control device CONT operates the second valve 19B to open the flow path of the supply pipe 19 to supply the functional liquid LK, the control device CONT operates the first valve 18B to flow the flow path of the return pipe 18. To stop supplying liquid LQ.
- the temperature control device 17 is manufactured by the pure water manufacturing device 16 and adjusts the temperature of the liquid (pure water) LQ supplied to the supply pipe 13. One end of the temperature control device 17 is connected to the pure water manufacturing device 16. (Ultra-pure water production device 162), the other end is connected to the supply pipe 13, and after adjusting the temperature of the liquid LQ produced by the pure water production device 16, the temperature-adjusted liquid LQ is sent to the supply pipe 13.
- the temperature controller 17 includes a rough temperature controller 171 that roughly adjusts the temperature of the liquid LQ supplied from the ultrapure water generator 162 of the pure water generator 16 and a downstream side of the flow path of the rough temperature controller 171 (supply pipe 13) and a flow controller 172 called a mass flow controller that controls the amount of liquid LQ that flows to the supply pipe 13 side per unit time, and the dissolved gas concentration in the liquid LQ that has passed through the flow controller 172 ( The degassing device 173 for reducing the dissolved oxygen concentration and dissolved nitrogen concentration), the filter 174 for removing foreign matters (fine particles, bubbles) in the liquid LQ degassed by the degassing device 173, and the filter 174 A fine temperature controller 1 75 that finely adjusts the temperature of the liquid LQ is provided.
- the rough temperature controller 171 adjusts the temperature of the liquid LQ delivered from the ultrapure water generator 162 with a rough accuracy of, for example, ⁇ 0.1 ° C with respect to the target temperature (eg, 23 ° C). To do.
- the flow controller 172 is arranged between the rough temperature controller 171 and the deaerator 173, and controls the flow rate per unit time of the liquid LQ deaerator 173 whose temperature is adjusted by the rough temperature controller 171. Control.
- the deaeration device 173 is disposed between the rough temperature controller 171 and the fine temperature controller 175, specifically, between the flow controller 172 and the filter 174.
- the delivered liquid LQ is degassed to lower the dissolved gas concentration (including dissolved oxygen concentration and dissolved nitrogen concentration) in the liquid LQ.
- a known deaeration device such as a decompression device for deaeration can be used.
- liquid LQ is gas-liquid separated using a filter such as a hollow fiber membrane filter, and a device including a degassing filter that removes the separated gas components using a vacuum system, or liquid LQ is removed using centrifugal force.
- An apparatus including a deaeration pump that performs liquid separation and removes the separated gas components using a vacuum system can also be used.
- the degassing device 173 adjusts the dissolved gas concentration to a desired value by the liquid reforming device including the degassing filter and the liquid reforming device including the degassing pump.
- the filter 174 is disposed between the rough temperature controller 171 and the fine temperature controller 175, specifically, between the deaerator 173 and the fine temperature controller 175. Remove foreign material from the delivered liquid LQ. Force that may cause a slight amount of particles to enter the liquid LQ when passing through the flow controller 172 or the deaerator 173 (on the supply pipe 13 By providing the filter 174 on the side), foreign matter can be removed by the filter 174.
- a known filter such as a hollow fiber membrane filter or particle filter can be used as the filter 174 including the liquid modifying member such as the particle filter adjusts the amount of foreign matter (fine particles, bubbles) in the liquid to an allowable value or less.
- the fine temperature controller 175 is disposed between the rough temperature controller 171 and the supply pipe 13, more specifically between the filter 174 and the supply pipe 13, so that the temperature of the liquid LQ can be accurately determined. Make adjustments. For example, the fine temperature controller 175 sets the temperature (temperature stability, temperature uniformity) of the liquid LQ delivered from the filter 174 with a high accuracy of about ⁇ 0. Make fine adjustments. In the present embodiment, among the plurality of devices constituting the temperature control device 17, the fine temperature controller 175 is disposed closest to the substrate P to which the liquid LQ is supplied, so that the high accuracy is achieved. The liquid LQ whose temperature has been adjusted can be supplied onto the substrate P.
- the filter 174 is disposed between the rough temperature controller 171 and the fine temperature controller 175 in the temperature controller 17, but is disposed in a different place in the temperature controller 17. Be sure to place it outside the temperature control device 17.
- the pure water producer 161, the ultrapure water producer 162, the deaerator 173, the filter 174, and the like each include the liquid reforming member and the liquid reformer, and the liquid LQ It functions as an adjusting device for adjusting at least one of the properties and components.
- the devices 161, 162, 173, 174 is provided at a predetermined position of the flow path in the liquid supply mechanism 10 through which the liquid LQ flows.
- one liquid supply unit 11 is arranged for one exposure apparatus EX (see FIG. 1), but the present invention is not limited to this, and a plurality of one liquid supply unit 11 is provided. It may be shared by the exposure device EX of the table.
- the area (footprint) occupied by the liquid supply unit 11 can be reduced.
- the pure water production device 16 and the temperature control device 17 constituting the liquid supply unit 11 are divided, and the pure water production device 16 is shared by a plurality of exposure devices EX, and the temperature control device 17 is provided for each exposure device EX. May be arranged! / In this way, the footprint can be reduced and temperature management for each exposure apparatus is possible. Further, in the above case, if the liquid supply unit 11 or the deionized water production apparatus 16 shared by the plurality of exposure apparatuses EX is placed on a floor (for example, under the floor) different from the floor where the exposure apparatus EX is installed, exposure is performed. The space in the clean room where the device EX is installed can be used more effectively!
- the measuring device 60 measures at least one of the properties and components of the liquid LQ filled between the projection optical system PL and the object disposed on the image plane side of the projection optical system PL.
- the liquid LQ in the present embodiment is water
- at least one of the properties and components of the liquid LQ is appropriately referred to as “water quality”.
- the measuring device 60 is provided in the middle of the recovery pipe 23, and measures the liquid LQ recovered by the liquid recovery mechanism 20. Since the liquid recovery mechanism 20 is filled between the projection optical system PL and the object and recovers the liquid LQ through the recovery port 22 of the nozzle member 70, the measuring device 60 has the recovery port 22 of the nozzle member 70.
- the water quality (at least one of properties and components) of the liquid LQ that is collected and flows through the collection pipe 23, that is, the liquid LQ that is filled between the projection optical system PL and the object is measured.
- the immersion area LR of the liquid LQ is movable between the substrate stage ST1 and the measurement stage ST2.
- the control device CONT supplies and recovers the liquid LQ using the liquid immersion mechanism 1 with the projection optical system PL and the measurement stage ST2 facing each other.
- the optical path space K1 between the projection optical system PL and the measurement stage ST2 is filled with the liquid LQ. More specifically, measurement When measuring the water quality of the liquid LQ using the apparatus 60, the control apparatus CONT fills the liquid LQ between the projection optical system PL and the predetermined region 100 on the upper surface 97 of the measurement stage ST2.
- the measuring device 60 measures the water quality of the liquid LQ filled between the projection optical system PL and the predetermined area 100 of the measuring stage ST2.
- the predetermined region 100 of the measurement stage ST2 is formed so as not to contaminate the liquid LQ. Accordingly, the measuring device 60 measures the liquid LQ that is filled between the projection optical system PL and the predetermined region 100 and that is prevented from being contaminated. Therefore, the measuring device 60 can accurately measure the true water quality of the liquid LQ (liquid LQ supplied to the optical path space K1) filled in the optical path space K1 on the image plane side of the projection optical system PL. The measurement result of the measuring device 60 is output to the control device CONT. Based on the measurement result of the measurement device 60, the control device CONT determines whether the state (water quality) of the liquid LQ filled between the projection optical system PL and the predetermined area 100 of the measurement stage ST2 is a desired state force. be able to.
- the measuring device 60 measures the liquid LQ.
- the above-mentioned surface treatment PFA treatment or the like
- the member (stage upper surface) or a substrate coated with a photosensitive material P etc. are mentioned.
- PFA treatment the above-mentioned surface treatment
- the member (stage upper surface) or a substrate coated with a photosensitive material P etc. are mentioned.
- the control device CONT Based on the measurement results, the true state (water quality) of the liquid LQ can be accurately determined, and if it is determined that the measured liquid LQ is contaminated, the source of contamination It can be determined that the cause is, for example, a malfunction of the pure water production apparatus 161 of the liquid supply unit 11. Therefore, it is possible to take appropriate measures (measures) for bringing the liquid LQ into the desired state, for example, maintaining the pure water production apparatus 161.
- a measurement position for measuring the liquid LQ is provided in the middle of the supply pipe 13, and the measurement device 60 is Consider the case where the quality of liquid LQ is measured at the measurement position.
- the measurement device 60 is Consider the case where the quality of liquid LQ is measured at the measurement position.
- the liquid LQ supplied to the optical path space K1 through the supply port 12 may be contaminated, but the measurement position is provided on the upstream side of the predetermined section.
- the contamination of the liquid LQ cannot be measured.
- the measuring device 60 cannot grasp (measure) the contamination of the liquid LQ supplied to the optical path space K1. Inconvenience arises. In that case, if it becomes impossible to take measures (measures) to maintain the liquid LQ in the desired state, it will also be difficult to identify the cause of the deterioration of exposure accuracy and measurement accuracy by force.
- the measurement processing by the optical measuring instruments 300, 400, 500, and 600 is performed through the contaminated liquid LQ, and the exposure processing of the substrate P is performed. Therefore, the measurement accuracy and exposure accuracy through the liquid LQ are improved. to degrade.
- the measurement position is set on the downstream side of the optical path space K1, specifically, in the middle of the recovery pipe 23, it is possible to prevent the inconvenience as described above.
- the measurement stage ST2 should be treated so as not to contaminate the liquid.
- Property of liquid LQ measured by measuring device 60 'component water or liquid quality, or liquid Items related to (Status) are determined in consideration of the effects on the exposure accuracy and measurement accuracy of the exposure apparatus EX, or the effects on the exposure apparatus EX itself.
- Table 1 is a table showing an example of the properties-components of liquid LQ and the effect on exposure accuracy of exposure apparatus EX or exposure apparatus EX itself.
- the properties of liquid LQ's components include physical properties such as resistivity, metal ions, total organic carbon (TOC), particles, bubbles, and live bacteria. Contained substances (foreign substances or contaminants), dissolved oxygen (DO), dissolved gases such as dissolved nitrogen (DN).
- the items related to the exposure accuracy of the exposure apparatus EX or the effect on the exposure apparatus EX itself include fogging of the lens (especially the optical element LSI) and watermark (liquid LQ evaporates, causing impurities in the liquid to solidify. Residue)), optical performance deterioration due to refractive index change and light scattering, influence on resist process (resist pattern formation), and flaws on each member.
- Table 1 summarizes the properties of each component and the power of each component and how much it affects the performance. .
- the properties of the liquid LQ to be measured by the measuring device 60 'component' are based on the exposure accuracy and measurement accuracy of the exposure device EX, or the influence on the exposure device EX itself. Selected. Of course, all items may be measured, or items related to the properties' component not shown in Table 1.
- the measuring device 60 has a plurality of measuring instruments.
- the measuring device 60 can be used as a measuring instrument to measure a specific resistance value.
- total organic carbon, particles' bubbles, dissolved oxygen, and specific resistance are selected as measurement items, and as shown in FIG. 5, the measuring device 60 is used to measure total organic carbon. It includes a TOC meter 61, a particle counter 62 for measuring foreign matter including fine particles and bubbles, a dissolved oxygen meter (DO meter) 63 for measuring dissolved oxygen, and a resistivity meter 64.
- the TOC meter 61 is connected to a branch pipe (branch flow path) 61K branched from the middle of a recovery pipe (collection flow path) 23 connected to the recovery port 22.
- the liquid LQ recovered through the recovery port 22 flows through the recovery pipe 23.
- the liquid LQ flowing through the recovery pipe 23 is a liquid filled between the projection optical system PL and the predetermined region 100 of the measurement stage ST2.
- a part of the liquid LQ flowing in the recovery pipe 23 is recovered in the liquid recovery part 21, and the remaining part flows in the branch pipe 61K and flows into the TOC meter 61.
- the TOC meter 61 measures the total organic carbon (TOC) of the liquid LQ that flows through the branch flow path formed by the branch pipe 61K.
- the particle counter 62, the dissolved oxygen meter 63, and the specific resistance meter 64 are connected to the branch pipes 62K, 63 ⁇ , and 64 ⁇ ⁇ that branch the intermediate force of the recovery pipe 23, respectively. Measures foreign matter (fine particles or bubbles), dissolved oxygen, and specific resistance in the liquid LQ flowing through the branch channel formed by 3 ⁇ and 64 ⁇ .
- the above-mentioned silica analyzer can be connected to a branch pipe branched from the middle of the recovery pipe 23.
- the measurement items of the measurement device 60 can be selected as necessary, so the measurement device 60 includes any one or more of the measuring instruments 61 to 64. Can do.
- the branch pipes 61K to 64K form independent branch channels, and the measuring instruments 61 to 64 are connected to the branch channels independent of each other. . That is, the plurality of measuring instruments 61 to 64 are connected in parallel to the recovery pipe 23 via the branch pipes 61 ⁇ to 64 ⁇ . Depending on the configuration of the measuring instrument, it can be separated from the recovery pipe 23. As the liquid LQ measured with the first measuring instrument and the liquid LQ that passed through the first measuring instrument is measured with the second measuring instrument, a plurality of measuring instruments are connected to the recovery pipe 23. May be connected in series. Depending on the number and position of branch pipes (branch points), the possibility of foreign matter (fine particles) increases. Therefore, the number and position of branch pipes should be set in consideration of the possibility of foreign matter.
- a sampling position for sampling a part of the liquid LQ may be set in the middle of the recovery pipe 23.
- the liquid LQ is sampled and the type of metal ions is identified using an analyzer provided separately from the exposure apparatus EX. Can do. This makes it possible to take appropriate measures according to the specified metal ions.
- the liquid LQ is sampled and the total evaporation residue in the liquid LQ is measured by a total evaporation residue meter provided separately from the exposure apparatus EX. Well ...
- the measuring device 60 measures the water quality of the liquid LQ flowing through the branch channel that branches from the middle of the recovery channel formed by the recovery pipe 23.
- the control device CONT performs the same operation as in the immersion exposure operation, that is, the liquid supply operation through the supply port 12 and the liquid through the recovery port 22. By performing the recovery operation, the water quality of the liquid LQ can be measured well without performing any special operation.
- a method for exposing the pattern image of the mask M onto the substrate P using the exposure apparatus EX having the above-described configuration will be described with reference to the flowchart of FIG.
- a plurality of substrates P are sequentially exposed. More specifically, a plurality of substrates P are managed for each lot, and the exposure apparatus EX sequentially processes each of the plurality of lots.
- the control device CONT moves the substrate stage ST1 to a predetermined substrate exchange position using the substrate stage driving device SD1.
- a transport system (not shown).
- the substrate P is not unloaded and the substrate P before exposure is not loaded. Is done.
- only the substrate P after the exposure is carried out at the substrate exchange position, and the substrate P before the exposure is not carried in.
- the operation of carrying in at least one of carrying in the substrate P before exposure to the substrate stage ST1 and carrying out the substrate P after exposure is appropriately referred to as “substrate exchange operation”.
- measurement processing using the measurement stage ST2 is performed while the substrate exchange operation for the substrate stage ST1 is performed!
- the control device CONT starts a predetermined measurement process using the measurement stage ST2 in parallel with at least a part of the substrate exchange operation for the substrate stage ST1 (step SA1).
- the control device CONT has a predetermined area in a state where the lower surface LSA of the projection optical system PL and the predetermined area 100 of the upper surface 97 of the measurement stage ST2 face each other, that is, at a position where the substrate P is installed for exposure. Place 100, supply and collect the liquid LQ using the immersion mechanism 1, and fill the space between the projection optical system PL and the predetermined area 100 of the measurement stage ST2 with the liquid LQ. Then, the control device CONT uses the measuring device 60 to measure the water quality of the liquid LQ between the projection optical system PL and the predetermined region 100 of the measuring stage ST2. As described above, the measuring device 60 measures the liquid LQ in which contamination is suppressed. The measurement result of the measuring device 60 is output to the control device CONT. The control device CONT stores the measurement result of the measuring device 60 in the storage device MRY (step SA2).
- the control device CONT stores the measurement result by the measurement device 60 for the liquid LQ arranged on the predetermined region 100 in the storage device MRY in association with the passage of time. For example, by providing a sensor for the valve that can detect whether or not the valve 13B is closing the flow path of the supply pipe 13, and by providing a timer function in the controller CONT, the controller CONT When the valve 13 B detects that the flow path of the supply pipe 13 has been opened based on the detection result of the sensor for liquid, the elapsed time of force, that is, the supply of the liquid LQ by the liquid supply mechanism 10 is started. The elapsed time can be measured.
- the control device CONT uses the liquid supply mechanism 10 to start supplying the liquid LQ to the image plane side of the projection optical system PL. Can be stored in the storage device MRY.
- the control device CONT detected that the valve 13B closed the flow path of the flow path 13.
- the time when the supply of the liquid LQ to the image plane side of the projection optical system PL by the liquid supply mechanism 10 is stopped can be set as the measurement start point (reference).
- the information stored in the measurement device 60 relating to the water quality of the liquid LQ filled between the projection optical system PL and the predetermined area 100 of the measurement stage ST2 in association with the passage of time is appropriately referred to as “first This is referred to as “log information”.
- the liquid LQ liquid is placed on the predetermined region 100 on the measurement stage ST2 while the substrate exchange operation for the substrate stage ST1 is performed after the plurality of substrates P are sequentially exposed.
- the immersion region LR is formed, and the measurement operation by the measurement device 60 for the liquid LQ is performed.
- the measurement process for the liquid LQ by the measuring device 60 is performed every time the substrate P is replaced with respect to the substrate stage ST1, every time a predetermined number of substrates P are exposed, or every lot of substrates P.
- the control device CONT stores the measurement result of the measuring device 60 in the storage device MRY in association with the substrate P.
- the measurement results of the measuring device 60 relating to the water quality of the liquid LQ filled between the projection optical system PL and the predetermined region 100 of the measurement stage ST2 are displayed on the substrate.
- Information stored in association with P is referred to as “second log information” as appropriate.
- control device CONT can display (notify) the measurement result of the measurement device 60 using the notification device INF including the display device.
- the control device CONT determines whether or not the measurement result of the measurement device 60 is abnormal force (step S A3).
- the control device CONT controls the operation of the exposure apparatus EX based on the determination result.
- the measurement result of the measuring device 60 is abnormal when the state of the liquid LQ (water quality) is not the desired state but abnormal, and each item (TOC, foreign matter, dissolved gas concentration, (Siri force concentration, viable bacteria, specific resistance value, etc.) measured value exceeds the preset allowable value, and the exposure process and measurement process via the liquid LQ cannot be performed in the desired state. Including.
- an allowable value related to the water quality of the liquid LQ filled between the projection optical system PL and the predetermined region 100 is appropriately referred to as a “first allowable value”.
- the first tolerance is almost the influence from the object (here, the predetermined area 100) arranged on the image plane side of the projection optical system PL.
- Receiving! / Means the tolerance for the water quality of liquid LQ.
- the first allowable value can be obtained in advance by, for example, experiments or simulations. If the measurement value related to the water quality of the liquid LQ is less than or equal to the first allowable value, the exposure process and the measurement process via the liquid LQ can be performed in a desired state.
- the liquid LQ transmittance may be reduced. There is sex. In that case, the measurement accuracy by the optical measuring instruments 300, 400, 500, and 600 through the liquid LQ deteriorates. Or, the exposure accuracy of the substrate P through the liquid LQ deteriorates.
- the first allowable value for example, 1. Oppb
- the specific resistance value of liquid LQ is smaller than the first allowable value (for example, 18.2M Q-C m at 25 ° C) (when abnormal)
- sodium ions in liquid LQ It may contain a lot of metal ions such as
- the immersion region LR is formed on the substrate P with the liquid LQ containing a large amount of the metal ions
- the metal ions of the liquid LQ permeate the photosensitive material on the substrate P and are already formed under the photosensitive material. Adhering to the device pattern (wiring pattern) may cause inconveniences such as causing device malfunction.
- the control device CONT controls the operation of the exposure apparatus EX based on the first allowable value set in advance with respect to the water quality of the liquid LQ and the measurement result of the measurement device 60.
- step SA3 When it is determined in step SA3 that the measurement result of the measuring device 60 is not abnormal, that is, the water quality of the liquid LQ is not abnormal, the control device CONT uses the immersion mechanism 1 to project the projection optical system. Fill the liquid LQ between the first optical element LSI of PL and the upper surface 97 of the measurement stage ST2, and perform measurement using at least one of the optical measuring instruments 300, 400, 500, 600 ( Step SA4).
- the liquid LQ filled between the projection optical system PL and the upper surfaces 301, 401, 501, and 601 of the optical measuring instruments 300, 400, 500, and 600 is in the desired state with no abnormal water quality in step SA3. It is a liquid LQ judged (confirmed). Therefore, the measurement process by the optical measuring instrument through the liquid LQ in the desired state can be satisfactorily performed.
- An example of the measurement operation by the optical measuring instrument is baseline measurement.
- the control device CONT uses the above-described mask alignment system to connect the first reference mark MFM on the reference member 300 provided on the measurement stage ST2 and the corresponding mask alignment mark on the mask M. It is detected at the same time and the positional relationship between the first reference mark MFM and the corresponding mask alignment mark is detected.
- the control device CONT detects the second reference mark PFM on the reference member 300 by the substrate alignment system, so that the detection reference position of the substrate alignment system and the second reference mark PFM are detected. Detect the positional relationship.
- the control device CONT has a known positional relationship between the first reference mark MFM and the corresponding mask alignment mark, a positional relationship between the detection reference position of the substrate alignment system and the second reference mark PFM, and a known relationship. Based on the positional relationship between the first reference mark MFM and the second reference mark PFM, the distance between the projection position of the mask M pattern by the projection optical system PL and the detection reference position of the substrate alignment system, that is, the substrate alignment. Obtain system baseline information.
- the measurement operation by the optical measuring instrument is not limited to the above-described baseline measurement, At least one of illuminance unevenness measurement, aerial image measurement, and illuminance measurement using the optical measuring instruments 400, 500, and 600 mounted on the Stage ST2 can be performed.
- the control device CONT Based on the measurement results of these optical instruments 400, 500, and 600, the control device CONT performs various correction processes such as a calibration process for the projection optical system PL, and performs subsequent exposure processes for the substrate P. To reflect.
- the control device CONT fills the liquid LQ between the first optical element LSI of the projection optical system PL and the upper surface 97 of the measurement stage ST2. Measure the liquid via LQ.
- step SA3 when it is determined in step SA3 that the measurement result of the measuring device 60 is abnormal, that is, the water quality of the liquid LQ is abnormal, the control device CONT does not perform the measurement operation by the optical measuring instrument. Then, the measurement result of the measurement device 60 is notified by the notification device INF (step S A14). For example, the control device CONT can display information on the amount of fluctuation of the TOC contained in the liquid LQ with the passage of time with the notification device INF equipped with a display device. In addition, when the measurement result of the measurement device 60 is determined to be abnormal, the control device CONT notifies the notification device INF that the measurement result is abnormal, such as issuing an alarm (warning) by the notification device INF. be able to.
- control device CONT can also stop the supply of the liquid LQ by the liquid supply mechanism 10.
- the liquid LQ remaining on the measurement stage ST2 may be recovered using the liquid recovery mechanism 20 including the nozzle member 70.
- the liquid supply unit 11 includes a liquid reforming member and a liquid reforming device, respectively, and a plurality of adjusting devices (pure water producing devices) for adjusting the water quality of the liquid LQ. 161, ultrapure water generator 162, deaerator 173, filter 174, etc.).
- the control device CONT can identify at least one adjustment device from among the plurality of adjustment devices based on the measurement result of the measurement device 60, and can notify the information related to the specified adjustment device by the notification device INF.
- the control device CONT removes, for example, the degassing device 173 from among the plurality of adjusting devices.
- the notification device INF displays (notifies) the content that prompts maintenance (inspection and replacement) of the air filter and deaeration pump.
- the specific resistance value of the liquid LQ is abnormal based on the measurement result of the specific resistance meter of the measuring device 60
- the control device CONT displays (informs) the display device INF of a content for prompting maintenance (inspection / replacement) of, for example, the ion exchange membrane of the pure water production device among the plurality of adjustment devices.
- the control device CONT when it is determined that the specific resistance value of the liquid LQ is abnormal based on the measurement result of the specific resistance meter in the measuring device 60, the control device CONT, for example, a pure water manufacturing device among the plurality of adjusting devices. Display (notify) the information prompting the maintenance (inspection / replacement) of the 16 ion exchange membranes with the notification device INF.
- the control device CONT includes, for example, the pure water producing device 16 of the plurality of adjusting devices. Display (notify) the content that prompts maintenance (inspection / replacement) of the UV lamp with the alarm device INF.
- the control device CONT when it is determined that the amount of foreign matter (fine particles, bubbles) in the liquid LQ is abnormal based on the measurement result of the particle counter in the measuring device 60, the control device CONT For example, the notification device INF displays (notifies) the content of the content prompting the maintenance (checking / replacement) of the filter 174 or the particle filter of the pure water production device 16. In addition, when it is determined that the amount of viable bacteria in the liquid LQ is abnormal based on the analysis result of the viable cell analyzer in the measuring device 60, the control device CONT, for example, produces pure water among the plurality of adjusting devices. Display (notify) the content that prompts maintenance (inspection / replacement) of the UV lamp of device 16 with the notification device INF.
- the control device CONT includes, for example, the pure water production device 16 of the plurality of adjusting devices. Display (notify) the content that prompts maintenance (inspection / replacement) of the silica removal filter with the notification device INF.
- step SA15 measures for bringing the water quality of the liquid LQ into a desired state including the above-described maintenance processing and the like are performed.
- the control device CONT performs again the measurement operation of the water quality of the liquid LQ using the measuring device 60 (step SA2). Then, until the measurement result of the measuring device 60 is determined to be abnormal V, a treatment for bringing the liquid LQ into a desired state is performed.
- Step SA 5 the control device CONT commands the start of the immersion exposure processing of the substrate P (Step (P SA6).
- the substrate exchange operation is completed at the substrate exchange position, and the substrate P before exposure is held on the substrate stage ST 1.
- the control device CONT moves in the XY plane in a state where the measurement stage ST2 and the substrate stage ST1 are in contact (or close to each other) and maintain the relative positional relationship with the substrate P before exposure. Alignment processing is performed.
- a plurality of shot areas are provided on the substrate P, and alignment marks are provided corresponding to each of the plurality of shot areas.
- the control device CONT detects the alignment mark on the substrate P before exposure using the substrate alignment system, and determines the position coordinates of the plurality of shot areas provided on the substrate P with respect to the detection reference position of the substrate alignment system. calculate.
- the control device CONT maintains the relative positional relationship between the substrate stage ST1 and the measurement stage ST2 in the Y-axis direction, and uses the stage drive devices SD1 and SD2 to place the substrate stage ST1 and the measurement stage ST2. And move in the Y direction simultaneously. As described with reference to FIG. 3, the control device CONT is in a state including the position immediately below the projection optical system PL in a state where the substrate stage ST1 and the measurement stage ST2 are in contact (or close to each other). Move together in the direction. The control device CONT moves the substrate stage ST1 and the measurement stage ST2 together, thereby liquid LQ held between the first optical element LSI of the projection optical system PL and the upper surface 97 of the measurement stage ST2.
- the immersion area LR of the liquid LQ is moved along with the movement of the measurement stage ST2 and the substrate stage ST1 in the Y direction. It moves in the order of the upper surface 97 of measurement stage ST2, the upper surface 95 of substrate stage ST1, and the upper surface of substrate P.
- the liquid LQ is filled between the first optical element LSI of the projection optical system PL and the substrate P.
- the immersion area LR of the liquid LQ is disposed on the substrate P of the substrate stage ST1.
- the control device CONT retracts the measurement stage ST2 to a predetermined position where it does not collide with the substrate stage ST1.
- the control device CONT is in a state in which the substrate stage ST1 and the measurement stage ST2 are separated from each other. Then, the step “and” scanning immersion exposure is performed on the substrate P supported by the substrate stage ST1.
- the controller CONT uses the immersion mechanism 1 to fill the optical path space K1 of the exposure light EL between the projection optical system PL and the substrate P with the liquid LQ and liquid on the substrate P. An immersion region LR of LQ is formed, and the substrate P is exposed by irradiating the exposure light EL onto the substrate P via the projection optical system PL and the liquid LQ (step SA7).
- the liquid LQ filled in the optical path space K1 between the projection optical system PL and the substrate P is the liquid LQ determined (confirmed) in step SA3 as having a desired state with no abnormality in water quality. Therefore, the substrate P can be satisfactorily exposed through the liquid LQ in the desired state.
- the control device CONT performs a step-and-scan type liquid immersion exposure operation on the substrate P, and sequentially transfers the pattern of the mask M to each of a plurality of shot areas on the substrate P.
- the movement of the substrate stage ST1 for exposure of each shot area on the substrate P is based on the position coordinates and the baseline information of the plurality of shot areas on the substrate P obtained as a result of the above-mentioned substrate alignment. Done.
- FIG. 7 is a diagram showing a state where the substrate P is subjected to immersion exposure! During immersion exposure, the liquid LQ in the immersion area LR is in contact with the substrate P, and information on the water quality of the liquid LQ recovered from the substrate P by the liquid recovery mechanism 20 is obtained by the measuring device 60. It is constantly measured (monitored). The measurement result of the measuring device 60 is output to the control device CONT. The control device CONT stores the measurement result (monitor information) of the measuring device 60 in the storage device MRY (step SA8).
- the control device CONT stores the measurement result of the liquid LQ arranged on the substrate P by the measuring device 60 in the storage device MRY in association with the passage of time. For example, based on the measurement result of the laser interferometer 94, the control device CONT determines when the immersion area LR has moved from the measurement stage ST2 to the substrate stage ST1 (on the substrate P). As a (reference), the measurement result by the measurement device 60 can be stored in the storage device MRY in association with the passage of time. In the following description, information stored in association with the measurement results of the measurement device 60 relating to the water quality of the liquid LQ filled between the projection optical system PL and the substrate P on the substrate stage ST1 in accordance with the passage of time is appropriately This is called “third log information”.
- the plurality of substrates P are sequentially exposed.
- the control device CONT associates the measurement result of the measuring device 60 with the substrate P and stores it in the storage device MRY.
- the measurement result of the measuring device 60 relating to the water quality of the liquid LQ filled between the projection optical system PL and the substrate P on the substrate stage ST1 is applied to the substrate P.
- the information stored in association with this is referred to as “fourth log information” as appropriate.
- control device CONT stores the measurement result of the measurement device 60 in the storage device MRY in association with the shot area to be exposed.
- the control device CONT obtains the position information of the shot area in the coordinate system defined by the laser interferometer 94 based on the output of the laser interferometer 94 that measures the position of the substrate stage ST1, for example.
- the measurement result of the measurement device 60 when the shot area is exposed can be stored in the storage device MRY in association with the shot area. It should be noted that the sampling port (branch pipe) of the measuring device 60 and the recovery point are measured when the liquid LQ is measured by the measuring device 60 and when the measured liquid LQ is placed on the substrate P (on the shot area).
- the information stored in the storage device MRY may be corrected in consideration of the distance.
- information stored by associating the measurement result of the measurement device 60 with a shot area is appropriately referred to as “fifth log information”.
- the control device CONT measures the liquid LQ filled between the projection optical system PL and the predetermined area 100 of the measurement stage ST2 in step SA2, and the measurement result when the measurement device 60 measures the liquid LQ. Based on the measurement result when the liquid LQ filled between the system PL and the substrate P is measured by the measuring device 60, information on the substrate P is obtained as described below (step SA9).
- FIG. 8 shows an example of the substrate P.
- the substrate P has a base material 2 and a photosensitive material 3 coated on a part of the upper surface 2A of the base material 2.
- the base material 2 includes, for example, a silicon wafer (semiconductor wafer).
- the photosensitive material 3 is coated with a predetermined thickness (for example, about 200 nm) in a region that occupies most of the central portion of the upper surface 2A of the base material 2.
- the photosensitive material 3 is not coated on the peripheral edge 2As of the upper surface 2A of the base material 2, and the base material 2 is exposed at the peripheral edge 2As of the upper surface 2A.
- the photosensitive material is also applied to the side surface 2C and the bottom surface (back surface) 2B of the base material 2. 3 is not covered, but the photosensitive material 3 may be covered on the side surface 2C, the lower surface 2B, or the peripheral edge 2As.
- a chemically amplified resist is used as the photosensitive material 3.
- the photosensitive material 3 of the present embodiment is a chemically amplified resist
- the chemically amplified resist is a base resin and a photoacid generator (PA G: Photo Acid contained in the base resin). Generator), and an amine-based substance called Quenchiaichi.
- PA G Photo Acid contained in the base resin
- Quenchiaichi an amine-based substance called Quenchiaichi.
- the liquid LQ measured by the measuring device 60 in step SA8 is the liquid LQ filled between the projection optical system PL and the substrate P, and is the liquid LQ after contacting the substrate P. Therefore, the liquid LQ measured by the measuring device 60 contains the dissolved substance eluted from the substrate P to the liquid LQ.
- the liquid LQ measured by the measuring device 60 in step SA2 is a liquid LQ in which contamination is suppressed, in other words, a liquid LQ that does not contain an eluting substance. Therefore, by comparing the measurement result measured in step SA2 with the measurement result measured in step SA8, the control device CONT uses the information on the eluted substance eluted from the substrate P to the liquid LQ as the information on the substrate P. Can be sought.
- the third, fourth, and fifth log information described above includes information on the eluted substances eluted from the substrate P into the liquid LQ.
- Information on the eluted substances eluted from the substrate P into the liquid LQ includes various information such as the amount of eluted substances and physical properties (types).
- the control device CONT moves from the substrate P to the liquid LQ based on the measurement result related to the water quality measured by the measurement device 60 in step SA2 and the measurement result related to the water quality measured by the measurement device 60 in step SA8.
- the elution amount of the eluted substance can be determined.
- the control device CONT can determine the elution amount of the eluted material eluted from the substrate P, in particular, the eluted material from the photosensitive material 3, based on the measurement result of the TOC meter 61 in the measuring device 60. it can.
- the control device CONT is based on the difference between the elution volume measured in step SA2 and the elution volume measured in step SA8. Can be obtained
- the type of eluted material can also be specified.
- control device CONT can obtain information on the substrate P such as the elution amount of the elution substance and the type of the photosensitive material 3 based on the measurement result of the measurement device 60.
- the substrate condition refers to conditions related to Photosensitive Material 3, such as the type (physical properties) of Photosensitive Material 3, or whether the physical properties (type) of base material 2 and peripheral edge 2As are formed (base material 2 and liquid LQ). Including the condition relating to the base material 2 such as whether or not the contact is. Further, the substrate conditions include application conditions for applying the photosensitive material 3 to the base material 2 such as the film thickness of the photosensitive material 3.
- a plurality of substrates P (lots) having different substrate conditions are sequentially exposed, and the storage device MRY is eluted according to the plurality of substrates P (lots).
- Information on the elution amount of the substance is stored.
- the amount of eluate dissolved in the liquid LQ varies depending on the substrate conditions (physical properties, film thickness, etc. of Photosensitive Material 3). The relationship with the quantity can be determined in advance.
- the measurement value (elution amount of the eluted substance) of the measurement device 60 when the substrate P with the predetermined substrate condition is subjected to immersion exposure is stored in the storage device MRY.
- the control device CONT can determine that the substrate P is abnormal and control the exposure operation.
- the measurement result of the measurement device 60 for example, the TOC meter 61
- the storage information of the storage device MRY substrate Information on the substrate P, such as the type of photosensitive material 3 on the substrate P to be measured and the coating conditions, can be predicted on the basis of the relationship between the conditions and the amount of the substance eluted into the liquid LQ.
- the thin film 4 covering the photosensitive material 3 is an antireflection film (top ARC), a topcoat film (protective film), or the like.
- the thin film 4 may be a top coat film covering an antireflection film formed on the photosensitive material 3.
- the top coat film protects the photosensitive material 3 from the liquid LQ, and is made of, for example, a fluorine-based liquid repellent material.
- the control device CONT can also determine whether the photosensitive material 3 is covered with the thin film 4 based on the measurement result of the measuring device 60.
- the control device CONT can also determine the presence or absence of the thin film 4 as information on the substrate P based on the measurement result of the measurement device 60.
- the predetermined substance of the photosensitive material 3 may be eluted into the liquid via the thin film 4, or the substance of the material forming the thin film 4 may be eluted into the liquid.
- the information on the substrate P obtained based on the measurement result of the measuring device 60 includes information on the material (substance) of the thin film 4 in addition to the presence or absence of the thin film 4 on the photosensitive material 3.
- the amount of the eluted substance eluted from the substrate P to the liquid LQ is less than the predetermined allowable value.
- Plate conditions and exposure conditions are set optimally.
- the exposure conditions are the conditions for liquid LQ.
- Liquid LQ physical properties (type), liquid LQ supply amount per unit time, liquid LQ temperature, flow rate of liquid LQ on substrate P, substrate P and liquid LQ are in contact Includes wet time etc.
- the substrate P can be exposed satisfactorily if the elution amount of the elution substance eluted into the liquid LQ (concentration of the elution substance in the liquid LQ) is less than the above-mentioned allowable value.
- an allowable value related to the water quality of the liquid L Q filled between the projection optical system PL and the substrate P is appropriately referred to as a “second allowable value”.
- the second allowable value means an allowable value related to the water quality of the liquid LQ affected by the force of the object (here, the substrate P) arranged on the image plane side of the projection optical system PL.
- Information on the second allowable value related to the elution amount can be obtained in advance by, for example, experiments or simulations. If the elution amount of the eluent eluted from the substrate P to the liquid LQ is greater than or equal to the second tolerance, the permeability of the liquid LQ decreases as the eluent concentration in the liquid LQ increases, and the substrate passes through the liquid LQ. Exposure accuracy via liquid LQ may deteriorate, for example, exposure light EL cannot reach well above P.
- the elution amount of the substance eluted from the substrate P to the liquid LQ is greater than or equal to the second allowable value, the members that contact the liquid LQ (nozzle member 70, recovery tube 23, first optical element LSI, etc.) There is a possibility that contamination will occur, the eluted substance will adhere again on the substrate P and act as a foreign substance, or an adhesion mark (watermark) may be formed.
- the above-described inconvenience is suppressed by setting the elution amount of the elution substance eluted from the substrate P to the liquid LQ to be equal to or less than the second allowable value.
- substrates P (lots) having different substrate conditions are sequentially exposed, and a plurality of substrates P (lots) corresponding to a plurality of substrates P (lots) are stored in the storage device MRY.
- Information on the second tolerance value is stored in advance. In other words, information relating to the second allowable value is stored in advance in the storage device MRY for each substrate P (for each lot).
- the amount of the eluted material in the liquid LQ of the first photosensitive material Even if the (concentration) is the same as the elution amount (concentration) of the eluted substance from the second photosensitive material to the liquid LQ, depending on the physical properties (such as extinction coefficient) of the eluted substance, Elution substances from photosensitive materials There is a possibility that the liquid containing the liquid has a desired transmittance, but the liquid containing the substance eluted from the second photosensitive material does not have the desired transmittance.
- the second tolerance value corresponding to each of the plurality of substrates P (lots) is obtained in advance, and information regarding the second tolerance value is stored in advance in the storage device MRY.
- the second allowable value relating to the elution amount of the elution substance is separately obtained in advance for each substrate (each lot) and stored in the storage device MRY.
- the liquid is immersed on the substrate P.
- the substrate P with the liquid LQ for example, to reduce the elution amount of the eluent from the substrate P to the liquid LQ in the immersion area LR.
- Predetermined processing may be performed in advance.
- the control device CONT determines whether or not the measurement result of the measurement device 60 is abnormal force (step S A10). In other words, the control device CONT determines that the measurement value of the measurement device 60 (elution amount of the elution material) is the second allowable value based on the second allowable value related to the elution material determined in advance and the measurement result of the measurement device 60. It is determined whether or not this is the case. Then, the control device CONT controls the exposure operation based on the determination result.
- step SA10 When it is determined in step SA10 that the measurement result of the measurement device 60 is abnormal, that is, the measurement result of the measurement device 60 (elution amount of the eluted substance) is obtained in advance.
- the controller CONT continues the immersion exposure operation (step SA11). At this time, the control device CONT can notify the measurement result (monitor information) of the measurement device 60 by the notification device INF.
- the control device CONT moves the measurement stage ST2 using the measurement stage drive device ST2, and measures the substrate stage ST1. Bring stage ST2 into contact (or close proximity). Then, the liquid LQ immersion area from the upper surface 95 of the substrate stage ST1 to the upper surface 97 of the measurement stage ST2 Move LR. After moving the liquid LQ immersion area LR onto the measurement stage ST2, move the substrate stage ST1 to the substrate replacement position. At the substrate exchange position, the exposed substrate P is unloaded from the substrate stage ST1, and the unexposed substrate P is loaded onto the substrate stage ST1. And the exposure process with respect to the board
- the control device CONT repeats the above sequence to sequentially expose the plurality of substrates P.
- the storage device MRY the first, second, third, fourth, and fifth log information described above is accumulated and stored. By using these log information, exposure failure (error) can be analyzed (step SA13).
- step SA10 when it is determined that the measurement result of measurement device 60 is abnormal, that is, the measurement result (elution amount of eluted material) force of measurement device 60
- the control device CONT stops the exposure operation (step SA16).
- the control device CONT can drive the valve 13B provided in the supply pipe 13, close the flow path of the supply pipe 13, and stop the supply of the liquid LQ, for example.
- the liquid LQ remaining on the substrate P may be recovered using the nozzle member 70 and the liquid recovery mechanism 20. Further, after collecting the liquid LQ remaining on the substrate P, the substrate P may be unloaded from the substrate stage ST1. By doing so, it is possible to prevent inconveniences such as the formation of a large number of defective shots (defective substrates) due to continuing the exposure process in an abnormal state.
- control device CONT notifies the measurement result (monitor information) of the measurement device 60 by the notification device INF (step SA17). For example, information on the elution amount of the eluted material caused by Photosensitive Material 3 contained in the liquid LQ, information on the amount of fluctuation of the eluted material over time, and a specific shot out of multiple shot areas Information on the amount of eluate contained in the liquid LQ when the shot area is exposed (concentration of the eluent in the liquid LQ) is displayed on the notification device INF that includes the display device. Can be displayed.
- the control device CONT notifies the notification device INF that the measurement result is abnormal, such as issuing an alarm (warning) by the notification device INF. Can do.
- the notification device INF when measuring the amount of elution of the elution substance equal to or greater than the second allowable value, the notification device INF notifies that the substrate conditions (for example, the coating conditions of the photosensitive material 3) are to be reviewed. You can.
- a notification device INF prompts the user to review the exposure conditions (for example, the supply amount of liquid LQ per unit time). Can be notified.
- the notification device INF can notify that the inspection of the photosensitive material 3 is urged. If thin film 4 is supposed to be coated but the elution amount of the eluted substance exceeds the allowable value, whether thin film 4 is covered or not is good. The notification device INF can notify that it is urged to inspect whether or not it is covered with a coating.
- the information relating to the dissolved gas concentration contained in the liquid LQ can be displayed on the notification device INF including the display device.
- step SA10 the control device CONT can continue the exposure operation. Then, for example, when it is determined that the measurement result of the TOC meter 61 of the measuring device 60 is abnormal when exposing a specific shot region, the control device CONT associates with the shot region, The fact that the TOC measurement result was abnormal is stored in the storage device MRY as the fifth log information. Then, after all the shot areas are exposed, based on the 5th log information stored in the storage device MRY, the control device CONT determines that the measurement result is abnormal (the elution amount of the eluent is greater than the allowable value).
- the control device CONT may notify the notification device INF that the measurement result of the TOC meter 61 is abnormal in association with the shot area. In this way, the control device CONT uses the measurement result of the measurement device 60 as monitor information in real time to the notification device INF. In addition to the configuration of displaying the log information, the log information can also be displayed by the notification device INF.
- step SA3 when the measurement value (water quality) of each item measured by the measurement device 60 is equal to or greater than a preset first allowable value.
- the control device CONT determines that the measurement result of the measuring device 60 is abnormal (the water quality is abnormal).
- the first allowable value regarding the water quality can be appropriately determined according to the exposure process executed after the measurement operation by the measurement device 60. For example, the force at which the measurement operation using the optical measuring instruments 300, 400, 500, 600 (step SA4) is executed after the measuring operation by the measuring device 60 (step SA2).
- the optical measuring instruments 300, 400, 500 Depending on the target measurement accuracy of 600, the first tolerance value for the water quality of the liquid LQ can be set as appropriate.
- the optical measurement operation using the optical instruments 300, 400, 500, and 600 is performed before the lot (substrate P) is exposed. If high measurement accuracy is required for the first lot (first substrate), the liquid LQ of the first lot (first substrate) is measured via the liquid LQ. Strictly set the first tolerance for water quality. If a relatively rough measurement accuracy is allowed for a second lot (second substrate) different from the first lot (first substrate), the second lot (second substrate) is acceptable. The first permissible value for the water quality of the liquid LQ when measuring through the liquid LQ can be set relatively loosely.
- the second permissible value relating to the water quality of the liquid LQ can be appropriately set according to the target exposure accuracy (target pattern transfer accuracy) of the substrate P. Specifically, when multiple lots (substrate P) are exposed, high exposure accuracy (pattern transfer accuracy) is required for the first lot (first substrate). Strictly set the second tolerance for the water quality of the liquid LQ when exposing the first lot (first substrate) through the liquid LQ. If a relatively rough exposure accuracy (pattern transfer accuracy) is allowed for a second lot (second substrate) different from the first lot (first substrate), the second lot (second substrate) is acceptable. The second tolerance for the water quality of the liquid LQ when exposing the second lot (second substrate) through the liquid LQ can be set relatively loosely.
- the operation of the exposure apparatus EX stops even though the desired water quality is obtained, the operating rate of the exposure apparatus EX is reduced.
- the allowable value related to the water quality of the liquid LQ according to the accuracy, etc., it is possible to prevent the inconvenience such as a decrease in the operating rate of the exposure apparatus EX.
- the measuring device 60 that measures at least one of the properties and components of the liquid LQ filled between the projection optical system PL and the predetermined region 100 of the measurement stage ST2, Based on the measurement result, it is possible to accurately determine whether or not the liquid LQ filled in the optical path space K1 is in the desired state (whether or not abnormal force). If the measurement result of the measuring device 60 is abnormal, the exposure accuracy of the substrate P via the liquid LQ and the liquid LQ are obtained by performing appropriate processing for bringing the liquid LQ into a desired state. It is possible to prevent the measurement accuracy from being deteriorated by the optical measuring instrument.
- the measurement result of the liquid LQ placed on the predetermined region 100 by the measuring device 60 is stored as the first and second log information in the storage device MRY and on the substrate P.
- the measurement result of the measurement result 60 of the liquid LQ placed in is stored in the storage device MRY as third, fourth, and fifth log information.
- each adjustment device liquid reforming member and liquid reforming device constituting the liquid supply unit 11 can be maintained (inspected / replaced) at an optimal timing.
- the frequency of inspection and replacement according to each adjustment device can be set optimally.
- the optimal particle filter is selected based on the degree of change in the measured value over time. It is possible to predict and set the replacement time (exchange frequency).
- the performance of the particle filter to be used can be set optimally from the first and second log information. For example, if the measured value of the particle counter is rapidly worsening over time, If a high-performance particle filter is used and does not fluctuate significantly, a relatively low-performance (inexpensive) particle filter can be used to reduce costs.
- the first log information is water quality information associated with the passage of time
- the cause of the exposure failure can be analyzed in association with the passage of time.
- the second log information it is possible to analyze the cause of a failure (error) such as an exposure failure.
- the first log information and the second log information may not necessarily be acquired, but either one may be acquired.
- the third log information is water quality information associated with the passage of time
- the amount of change in the eluted substance with the passage of time can be obtained based on the third log information. If the amount of fluctuation increases significantly with time, it can be determined that the photosensitive material 3 is soluble in the liquid LQ. Also, if many exposure defects (pattern defects) occur in a specific lot or specific shot area, refer to the 4th log information (or 5th log information) and refer to that lot (or shot area). If the measured value of the TOC meter during exposure of the sample shows an abnormal value, it can be analyzed that the cause of the pattern defect is the eluted substance.
- the control device CONT removes the specific shot area or performs the next overlap. At the time of combined exposure, it is possible to take measures such as not exposing.
- the control device CONT can issue an instruction to the inspection device that performs the inspection process to inspect the specific shot area in more detail than usual. wear.
- the cause of defects can be identified. . Then, based on the analysis result, it is possible to take measures such as reviewing the substrate conditions and the exposure conditions so as not to cause pattern defects.
- the third, fourth, and fifth log information do not necessarily need to be acquired, and one or more of the third, fourth, and fifth log information may be omitted. it can.
- control device CONT can control the exposure operation and the measurement operation based on the measurement result of the measurement device 60.
- the exposure amount (illuminance) of the exposure light EL is measured using the optical measuring instrument 600 (step SA4) before the exposure of the substrate P, and the exposure light EL irradiation amount is based on the measurement result.
- the exposure operation starts.For example, during exposure of the substrate P, the light of the liquid LQ is caused by the fluctuation of the TOC in the liquid LQ. Transmission may vary.
- the exposure amount (integrated exposure amount) on the substrate P will fluctuate, resulting in inconveniences such as variations in the exposure line width of the device pattern formed in the shot area. May occur. Therefore, the relationship between the TOC in the liquid LQ and the transmittance of the liquid LQ at that time is obtained in advance and stored in the storage device MRY, and the control device CONT receives the storage information and the measurement device 60 (TOC meter). The inconvenience can be prevented by controlling the exposure amount based on the measurement result of 61). That is, the control device CONT uses the stored information to determine the transmittance according to the change in the TOC in the liquid LQ! /, And control to make the exposure amount reaching the substrate P constant.
- the exposure amount on the substrate P By controlling the exposure amount on the substrate P according to the change in the TOC measured by the TOC meter 61, the exposure amount within the substrate (between shots) or between the substrates becomes constant, and the exposure line width Variations can be suppressed.
- the relationship between the TOC and the light transmittance of the liquid LQ can be obtained by a measurement process using the liquid LQ using the optical measuring instrument 600.
- a laser is used as the light source of the exposure light EL
- exposure on the substrate P is performed using a method such as controlling the energy (light quantity) per pulse or controlling the number of pulses.
- the amount can be controlled.
- the exposure amount on the substrate P can be controlled by controlling the running speed of the substrate P.
- the control device CONT controls the exposure operation and the measurement operation based on the first log information. I can do it. For example, if it is determined that the TOC value gradually deteriorates with time based on the first log information, the exposure apparatus EX uses the time of the TOC stored as the first log information. By controlling the exposure amount according to the passage of time based on the value (change amount) according to the progress, the exposure amount between the substrates P can be made constant and the variation in the exposure line width can be reduced.
- the liquid supply mechanism 10 includes a functional liquid supply apparatus 120. Based on the first log information or the measurement result of the measurement device 60, the control device CONT functions from the functional liquid supply device 120 of the liquid supply mechanism 10 for each member that contacts the liquid LQ forming the liquid immersion region LR. Liquid LK can be supplied to clean these components.
- each member that contacts the liquid LQ specifically, the nozzle member 70 Lower surface 70A, internal flow path of nozzle member 70, supply pipe 13 connected to nozzle member 70, recovery pipe 23, lower surface LSA of first optical element LSI, upper surface 95 of substrate stage ST1, upper surface 97 of measurement stage ST2 (optical measurement There is a possibility that the upper surface of each of the devices 300, 400, 500, 600 and the predetermined region 100) will be contaminated.
- the liquid LQ immersion region LR when the liquid LQ immersion region LR is formed on the substrate P, the liquid LQ contains an elution substance such as PAG that has also eluted the substrate P force. Accordingly, the nozzle member 70 in contact with the liquid LQ containing the eluted substance is likely to adhere to the contaminant due to the eluted substance. In particular, the contaminant is likely to adhere in the vicinity of the recovery port 22 of the nozzle member 70. In addition, when a porous body is provided in the recovery port 22, contaminants adhere to the porous body. If the contaminated material is left unattended, even if clean liquid LQ is supplied to the optical path space K1, the supplied liquid LQ is brought into contact with the contaminated nozzle member 70, etc. Will be contaminated.
- an elution substance such as PAG that has also eluted the substrate P force. Accordingly, the nozzle member 70 in contact with the liquid LQ containing the eluted substance is likely to adhere to the contaminant due to the
- the control device CONT determines whether or not to clean the member in contact with the liquid LQ according to the measurement result of the measurement device 60. That is, in step SA3, the measuring device 6 If it is determined that the measured value is greater than the first tolerance value (or the second tolerance value or the tolerance value for cleaning) based on the measurement result of 0, the control device CONT performs the cleaning action (or sterilization action).
- the cleaning action or sterilization action.
- the control apparatus CONT When supplying the functional liquid LK from the functional liquid supply apparatus 120, the control apparatus CONT makes the lower surface LSA of the projection optical system PL face the upper surface 97 of the measurement stage ST2 or the upper surface 95 of the substrate stage ST1.
- a dummy substrate DP as described later may be held on the substrate stage ST1, and the lower surface LSA of the projection optical system PL and the dummy substrate DP of the substrate stage ST1 may be opposed to each other.
- the control device CONT drives the second valve 19B provided in the supply pipe 19 that connects the functional liquid supply device 120 and the liquid supply section 11 to the flow of the supply pipe 19
- the channel is opened and the flow path of the return pipe 18 is closed by the first valve 18B.
- the functional liquid LK is supplied from the functional liquid supply device 120 to the liquid supply unit 11.
- the functional liquid LK supplied from the functional liquid supply device 120 flows through the liquid supply unit 11, then the supply pipe 13, the internal flow path (supply flow path) of the nozzle member 70, and then the supply port 12. More supplied to the image plane side of the projection optical system PL.
- the liquid recovery mechanism 20 performs the liquid recovery operation as in the liquid immersion exposure operation. Therefore, the functional liquid LK filled on the image plane side of the projection optical system PL is recovered through the recovery port 22, flows through the recovery tube 23, and is recovered by the liquid recovery unit 21.
- the functional liquid LK cleans the flow paths by flowing through the flow paths (supply pipe 13, recovery pipe 23, nozzle member 70, etc.) of the liquid immersion mechanism 1.
- the functional liquid LK filled on the image plane side of the projection optical system PL is applied to the lower surface (liquid contact surface) LSA of the first optical element LSI and the lower surface (liquid contact surface) 70A of the nozzle member 70. Can also clean the lower surface LSA, 70A.
- the measurement stage ST2 or substrate stage ST1 is moved two-dimensionally in the XY direction with respect to the liquid immersion area of the functional liquid LK. A wide area of the upper surface 97 or the upper surface 95 of the substrate stage PT1 can be cleaned.
- immersion exposure By performing the liquid immersion area forming operation of the functional liquid LK in the same procedure as in the operation, the above-described members can be simultaneously and efficiently cleaned.
- the procedure for the cleaning process using the functional liquid LK is as follows. After supplying the functional liquid LK from the functional liquid supply device 120, the functional liquid LK is supplied and recovered in the same procedure as in the immersion exposure operation. A liquid immersion area of the functional liquid LK is formed on the image plane side of the projection optical system PL over time. The functional liquid LK may be heated and then flowed through the flow paths of the liquid supply mechanism 10 and the liquid recovery mechanism 20. Then, after a predetermined time has elapsed, the supply and recovery operation of the functional liquid LK is stopped. In this state, the functional liquid LK is held on the image plane side of the projection optical system PL and is in an immersion state.
- the controller CONT supplies and recovers pure water for a predetermined time by the liquid supply mechanism 10 and the liquid recovery mechanism 20, and the immersion area of the pure water is projected into the projection optical system PL. Is formed on the image plane side.
- pure water flows through the flow paths of the liquid supply mechanism 10 and the liquid recovery mechanism 20, respectively, and the flow paths are washed with the pure water.
- the lower surface LSA of the first optical element LSI and the lower surface 70A of the nozzle member 70 are also cleaned by the pure water immersion area.
- the control device CONT uses the liquid immersion mechanism 1 to fill the space between the projection optical system PL and the predetermined area 100 of the measurement stage ST2 with the liquid LQ, and measures the liquid LQ. By measuring using the device 60, it is possible to confirm whether or not the cleaning process has been performed satisfactorily, that is, whether or not the liquid LQ is in a desired state.
- the functional liquid LK is formed of a material without affecting the respective members.
- peroxy hydrogen water is used as the functional liquid LK.
- the members formed of a material that is not resistant to the functional liquid LK may be removed before the cleaning process using the functional liquid LK.
- the cleaning process is performed by controlling the operation of the liquid supply mechanism 10 including the functional liquid supply apparatus 120 based on the measurement result of the measurement apparatus 60.
- the cleaning process may be performed at predetermined time intervals (for example, every month, every year) regardless of the measurement result.
- contamination source that contaminates the above-mentioned members (nozzle member 70, first optical element LSI, etc.) that come in contact with liquid LQ
- contamination In addition to the substances eluted from the liquid LQ and the substrate P, for example, the member may also be contaminated by the adhering impurities floating in the air to the member. Even in such a case, it is possible to prevent the contamination of the member and consequently the liquid LQ contacting the member by performing the cleaning process at predetermined time intervals regardless of the measurement result of the measuring device 60. it can.
- water quality measurement may be omitted when the liquid immersion region is formed on the substrate P. That is, in the flowchart of FIG.
- SA11, SA16 and SA17 may be omitted.
- the space between the projection optical system PL and the predetermined region 100 of the measurement stage ST2 is filled with the liquid LQ, and the water quality of the liquid LQ is measured in this state (step SA2).
- step SA2 the water quality of the liquid LQ is measured in this state.
- step S A3 a measurement operation using at least one of the optical measuring instruments 300, 400, 500, 600 is performed.
- the control device CONT is in a state where the liquid LQ is filled between the projection optical system PL and the optical measuring instrument (here, sensor 400 as an example) on the measurement stage ST2.
- the measurement operation by the sensor 400 is performed, and the measurement operation by the sensor 400 and at least a part of the water quality measurement operation by the measurement device 60 are performed in parallel. That is, the control device CONT is mounted on the projection optical system PL and the measurement stage ST2, and supplies and recovers the liquid LQ by the liquid immersion mechanism 1 with the upper surface 401 of the sensor 400 facing each other. As a result, the optical path space K1 between the projection optical system PL and the sensor 400 is filled with the liquid LQ, and the sensor 400 can perform measurement processing via the liquid LQ. The water quality of the liquid LQ recovered in 20 can be measured.
- the upper surface 401 of the sensor 400 is coated with, for example, “CYTOP (registered trademark)” so as not to contaminate the liquid LQ. Therefore, the measuring device 60 can measure the liquid LQ in which contamination is suppressed.
- CYTOP registered trademark
- the measuring device 60 can measure the liquid LQ in which contamination is suppressed.
- it is based on sensor 400
- the case where the measurement operation and the measurement operation by the measurement device 60 are performed in parallel has been described as an example.Of course, the measurement operation by the reference member 300, the sensors 500 and 600 and the measurement operation by the measurement device 60 are performed in parallel. It can be carried out.
- the measurement processing time using the measurement stage ST2 can be shortened by performing the measurement operation via the liquid LQ by the optical measuring instrument and the water quality measurement operation by the measuring device 60 in parallel. And throughput can be improved.
- the control device CONT when measuring the water quality of the liquid LQ using the measuring device 60, the control device CONT is configured so that the projection optical system PL and the measurement stage ST2 face each other and the liquid LQ by the liquid immersion mechanism 1 is used.
- the liquid LQ is supplied by the liquid immersion mechanism 1 with the projection optical system PL and the dummy substrate DP held by the substrate stage ST1 facing each other. Then, the liquid LQ in contact with the dummy substrate DP may be measured with the measuring device 60.
- the dummy substrate DP is a member different from the substrate P for device manufacture, and has almost the same size and shape as the substrate P.
- the measuring device 60 can accurately measure the water quality of the liquid LQ without being affected by the object (in this case, the dummy substrate DP) arranged on the image plane side of the projection optical system PL. it can.
- a part (or all) of the upper surface 95 of the substrate stage ST1 is formed so as not to contaminate the liquid LQ by, for example, PFA treatment, and the measuring device 60 is used.
- the measuring device 60 is used.
- the liquid LQ is supplied and recovered by the liquid immersion mechanism 1, and the water quality is measured by the measurement device 60. You may make it perform.
- the predetermined member is liquid LQ. It has a predetermined area formed so as not to be contaminated.
- the predetermined member may be provided on the image plane side of the projection optical system PL so as to be movable by a driving device including an actuator!
- the measurement device 60 may be provided on the measurement stage ST2.
- the measuring device 60 includes a measuring instrument (TOC meter, particle counter, etc.) embedded in the measuring stage ST2, and a sampling port (hole) provided in the upper surface 97 of the measuring stage ST2.
- TOC meter, particle counter, etc. embedded in the measuring stage ST2
- sampling port hole
- the immersion area LR of the liquid LQ is formed on the image plane side of the projection optical system PL, and the immersion area LR and the measurement stage ST2 are moved relative to each other, so that the immersion area LR Is placed on the sampling port and liquid LQ is allowed to flow into the sampling port.
- the measuring instrument measures the liquid LQ acquired through the sampling port.
- the upper surface 97 of the measurement stage ST2 has been subjected to PFA treatment or the like so as not to contaminate the liquid LQ. Even with such a configuration, the measuring device 60 can accurately measure the water quality of the liquid LQ. Similarly, the measuring device 60 may be provided on the substrate stage ST1.
- the measuring device 60 (60A, 60B) has a water quality of the liquid LQ at each of a plurality of (in this case, two) measuring positions in the flow path of the liquid immersion mechanism 1. The point is to measure.
- the liquid immersion mechanism 1 includes a supply pipe 13 for supplying the liquid LQ and a recovery pipe 23 for recovering the liquid LQ.
- the measuring device 60 includes a first measuring device 60A for measuring the water quality of the liquid LQ at a predetermined position (first position) C1 of the supply pipe 13, and a liquid at a predetermined position (second position) C2 of the recovery pipe 23. And a second measuring device 60B for measuring LQ water quality.
- the first and second measuring devices 60A and 60B have substantially the same configuration as the measuring device 60 of the first embodiment described with reference to FIG.
- the measuring device 60 uses the first and second measuring devices 60A and 60B to measure the water quality of the liquid LQ in each of the first position C1 and the second position C2 in the flow path that constitutes the liquid immersion mechanism 1. .
- the measurement results of the first and second measuring devices 60A and 60B are output to the control device CONT.
- the control device CONT has the measurement result of the first measurement device 60A, that is, the measurement result of the water quality of the liquid LQ at the first position C1, and the measurement result of the second measurement device 60B, that is, the second position C. Based on the measurement result of the water quality of the liquid LQ in 2, the state of the flow channel between the first position C1 and the second position C2 of the flow channels constituting the immersion mechanism 1 can be obtained.
- a nozzle member 70 is provided between the first position C1 and the second position C2 in the flow path constituting the liquid immersion mechanism 1. Therefore, the control device CONT can determine the state of the nozzle member 70 based on the measurement results of the first and second measuring devices 60A and 60B. Specifically, the control device CONT determines the contamination state of the flow path between the first position C1 and the second position C2 including the nozzle member 70 based on the measurement results of the first and second measurement devices 60A and 60B. You can ask for a state.
- the control device CONT uses the first and second measurement devices 60A and 60B to determine the contamination state of the flow path between the first position C1 and the second position C2, and the control unit CONT
- the liquid LQ is supplied and recovered by the liquid immersion mechanism 1 in a state where the lower surface LSA (the lower surface 70A of the nozzle member 70) and the predetermined region 100 of the upper surface 97 of the measurement stage ST2 face each other, and the projection optical system PL Fill the area 100 with liquid LQ.
- the measuring device 60 (second measuring device 60B) can measure the water quality of the liquid LQ without being affected by the object arranged on the image plane side of the projection optical system PL, and the first position C1 And the second position C2 can be accurately measured.
- the control device CONT obtains the contamination state of the flow path between the first position C1 and the second position C2 including the nozzle member 70 based on the measurement results of the first and second measurement devices 60A and 60B. Can do.
- the flow path between the first position C1 and the second position C2 is contaminated, for example, organic substances are present inside the recovery pipe 23 or the recovery flow path (internal flow path) of the nozzle member 70.
- the control device CONT can determine the contamination state of the flow path between the first position C1 and the second position C2 based on the measurement results of the first and second measurement devices 60A and 60B.
- the control device CONT performs maintenance of the flow channel that constitutes the liquid immersion mechanism 1, particularly between the first position C1 and the second position C2, according to the measurement result of the measurement device 60. Determine whether or not to perform. Specifically, the control device CONT determines whether or not the measurement result of the measurement device 60 (the difference between the measurement value of the first measurement device 60A and the measurement value of the second measurement device 60B) is an abnormal force. Based on the results, determine whether to perform maintenance.
- the measurement result of the measurement device 60 is abnormal.
- the difference between the measurement value of the first measurement device 60A and the measurement value of the second measurement value 60B is equal to or greater than a predetermined allowable value.
- a predetermined allowable value By flowing through the flow path between the first position C1 and the second position C2, the state of the liquid LQ (water quality) becomes undesired, and when the liquid LQ fills the optical path space K1, it passes through the liquid LQ. This includes cases where the exposure process and measurement process cannot be performed in the desired state.
- Information on the allowable value can be obtained in advance by, for example, experiments or simulations.
- the nozzle member 70 comes into contact with the liquid LQ containing the eluted substance eluted from the substrate P, it is easily contaminated. If the contamination of the nozzle member 70 is left unattended, even if a clean liquid LQ is supplied to the optical path space K1, the supplied liquid LQ is brought into contact with the contaminated nozzle member 70 etc. Will be contaminated.
- the control device CONT is based on the measurement results of the first and second measurement devices 60A and 60B. The contamination state of the nozzle member 70 can be accurately obtained.
- the liquid LQ filled in the optical path space K1 can be maintained in a desired state by performing an appropriate measure for cleaning the nozzle member 70.
- the control device CONT responds to the measurement result of the measurement device 60 (first and second measurement devices 60A, 60B), that is, the measurement result of the measurement device 60 (the measurement value of the first measurement device 60A and the second measurement value). It is determined whether or not to perform maintenance according to the determination result when it is determined whether or not the difference between the measurement value of the measuring device 60B and the abnormal force.
- the predetermined maintenance work is performed. As for the maintenance work, as in the first embodiment, the functional liquid LK having the cleaning function from the functional liquid supply device 120 is ranked first.
- the flow is performed in the flow path of the liquid immersion mechanism 1 including the space between the device CI and the second position C2, and the flow path is cleaned.
- the nozzle member 70 is separated from the supply pipe 13 and the recovery pipe 23, that is, the nozzle member 70 is removed from the exposure apparatus EX, and the nozzle member 70 is cleaned by a predetermined cleaning device different from the exposure apparatus EX.
- maintenance work includes replacing the nozzle member 70 with a new one (clean one) and cleaning work by an operator.
- the controller CONT supplies and recovers the liquid LQ by the liquid immersion mechanism 1, and measures the water quality of the liquid LQ at the first and second positions Cl and C2, It can be confirmed whether or not the flow path including the nozzle member 70 is clean.
- the state of the flow path between the first position C1 and the second position C2 including the nozzle member 70 is measured.
- the state of the supply pipe 13 is obtained by setting the vicinity of the connection position with the liquid supply unit 11 as the first position and the vicinity of the connection position with the nozzle member 70 as the second position C2. You can. Then, based on the measurement result of the measuring device, for example, the functional liquid LK is poured into the supply pipe 13, the supply pipe 13 is detached from the exposure apparatus EX and cleaned with a cleaning apparatus, or the supply pipe 13 is renewed (clean). ) You can take measures such as exchanging for something.
- the measuring device 60 is a force that measures the water quality of the liquid LQ at each of the first and second positions Cl and C2 of the flow path of the liquid immersion mechanism 1.
- the water quality of liquid LQ can be measured at any of multiple locations in three or more locations in the flow path of liquid immersion mechanism 1.
- the measurement device is set at a plurality of predetermined positions in the flow path of the liquid immersion mechanism 1, and the control device CONT determines each measurement position based on the measurement result regarding the water quality of the liquid LQ at each of the plurality of measurement positions. The state of the flow path between the two can be obtained.
- the control device CONT uses the measuring device 60 to measure the water quality of the liquid LQ at a plurality of measurement positions along the flow direction of the liquid LQ in the flow path of the liquid immersion mechanism 1. Based on the water quality measurement results at each measurement position, the flow path state between the measurement positions can be obtained. In this way, the flow path constituting the liquid immersion mechanism 1 Of these, it is possible to identify where the water quality of the liquid LQ changes, and the cause of the change can be easily investigated.
- the control device CONT can identify in which section the abnormality occurs based on the measurement result of each measuring device. Then, by notifying the fact that an abnormality has occurred in a certain section by the notification device INF, it is possible to prompt the investigation of that section, and it is possible to recover the malfunctioning ability early.
- the measurement apparatus 60 in the first to fourth embodiments described above is permanently installed in the exposure apparatus EX. However, for example, when the exposure apparatus EX is maintained or at a predetermined timing, the measurement apparatus 60 is supplied to the exposure apparatus EX (supply). It may be connected to the pipe 13 or the recovery pipe 23) to measure the water quality of the liquid LQ regularly or irregularly.
- the measuring device 60 has a plurality of measuring instruments (61, 62, 63, 64), and the recovery pipe 23 ( Alternatively, for example, one branch pipe (port) is provided in the recovery pipe 23 (or supply pipe 13), and a plurality of measuring instruments (61, 62) are connected to the two ports. 63, 64) may be connected while being replaced to measure the water quality of the liquid LQ.
- the first measuring device 60A is connected to the supply pipe 13 via the branch pipe
- the second measuring device 60B is connected to the recovery pipe 23 via the branch pipe.
- the first position C1 (second position C2 )
- the water quality of the liquid LQ at the second position C2 (first position C1) may be measured.
- the supplied liquid LQ is sampled at a predetermined timing and provided separately from the exposure apparatus EX.
- the liquid LQ may be measured (analyzed) by using a measuring device (analyzer).
- the liquid LQ is sampled at a predetermined timing and measured with a measuring device provided separately from the exposure device EX. Good.
- a valve is provided in the branch pipes 61K to 64K, and by operating the valve, the liquid LQ flowing through the supply pipe 13 is caused to flow into the measuring device 60 at a predetermined timing, and the liquid LQ is measured intermittently. You may do it. Meanwhile, supply pipe 13 By constantly supplying the flowing liquid LQ to the measuring device 60 and continuously measuring it, it is possible to stabilize the measurement by the measuring device 60.
- the branch pipes 61K, 62 ⁇ , 63 ⁇ , and 64 ⁇ are connected to the recovery pipe 23 between the liquid collection portion 21 and the nozzle member 70, and the measuring device 60 Is configured to measure the liquid LQ branched from the recovery pipe 23.
- the branch pipe it is preferable to provide the branch pipe as close as possible to the nozzle member 70 (in the vicinity of the recovery port 22).
- the branch pipes 61 ⁇ , 62 ⁇ , 63 ⁇ , and 64 ⁇ function as sampling ports that sample the liquid LQ that flows through the recovery pipe 23, and the measuring device 60 includes the nozzle member 70.
- the intermediate force of the recovery pipe 23 between the liquid recovery unit 21 and the liquid LQ sampled by the branch flow path is also measured.
- a sampling port is attached to the nozzle member 70, for example, near the recovery port 22, and the measuring device 60 May measure the liquid LQ flowing in the vicinity of the recovery port 22.
- pure water was used as the liquid LQ in the present embodiment.
- Pure water has the advantage that it can be easily obtained in large quantities at semiconductor manufacturing plants, etc., and has no adverse effects on the photoresist on the substrate P, optical elements (lenses), and the like.
- 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, or about 1.44 times that in air, so if it is sufficient to ensure the same depth of focus as in air, the projection optical system
- the numerical aperture of the PL can be further increased, and the resolution is also improved in this respect.
- 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 aberration, etc.), by this lens. Adjustments can be made.
- an optical element attached to the tip of the projection optical system PL As an optical element attached to the tip of the projection optical system PL,
- An optical plate used for adjusting the optical characteristics of the projection optical system PL may be used. Alternatively, it may be a plane parallel plate that can transmit the exposure light EL.
- the space between the projection optical system PL and 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 liquid, but as disclosed in International Publication No. 2004Z019128, 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 transmit water. So
- liquid LQ for example, perfluorinated polyether (PFPE) and F laser light can be transmitted.
- PFPE perfluorinated polyether
- F laser light can be transmitted.
- the part that comes into contact with the liquid LQ may be a fluorine-based fluid such as fluorine-based oil.
- the part that comes into contact with the liquid LQ for example, has a small polarity including fluorine!
- the film is made lyophilic by forming a thin film with a molecular structure.
- the liquid LQ is stable to the projection optical system PL that is transmissive to the exposure light EL and has a refractive index as high as possible, and to the photoresist applied to the surface of the substrate P (for example, Cedar). Oil) can also be used.
- the surface treatment is performed according to the polarity of the liquid LQ used.
- the substrate P in each of the above embodiments is not limited to a semiconductor wafer for manufacturing semiconductor devices, but also a glass substrate for display devices, a ceramic wafer for thin film magnetic heads, a mask used in an exposure apparatus, or Reticle masters (synthetic quartz, silicon wafers) are applied.
- a step-and-scan type scanning exposure apparatus that scans and exposes the pattern of the mask M by synchronously moving the mask M and the substrate P.
- a step-and-repeat projection exposure apparatus steno
- the mask M and the substrate P are stationary and the pattern of the mask M is collectively exposed and the substrate P is sequentially moved stepwise.
- 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.
- 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.
- a light transmission type mask (reticle) 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 (lithographic system) that forms a line 'and' space pattern on the wafer W by forming interference fringes on the wafer W.
- the present invention can also be applied to a stem.
- the present invention can also be applied to an exposure apparatus that includes only the substrate stage ST 1 that holds the substrate P, omitting the measurement stage ST2.
- a predetermined area 100 formed so as not to contaminate the liquid LQ may be provided on the substrate stage ST1, and the dummy substrate DP as described above is held on the substrate stage ST1 and used as the predetermined area. May be.
- the exposure apparatus provided with the projection optical system PL has been described as an example.
- the present invention can be applied to an exposure apparatus and an exposure method that do not use the projection optical system PL.
- the exposure light is irradiated onto the substrate via an optical member such as a lens, and the immersion area is placed in a predetermined space between the optical member and the substrate. Is formed.
- the present invention can also be applied to a twin stage type exposure apparatus.
- a twin-stage type exposure apparatus a predetermined area formed so as not to contaminate the liquid LQ should be formed on the upper surface of at least one of the two stages holding the substrate! .
- the structure and exposure operation of a twin stage type exposure apparatus are described in, for example, Japanese Patent Laid-Open Nos. 10-163099 and 10-214783 (corresponding US Pat. Nos. 6,341,007, 6,400, 441, 6, 5 49, 269).
- an exposure apparatus that locally fills the liquid between the projection optical system PL and the substrate P is employed.
- the present invention is disclosed in 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 structure and exposure operation of such an immersion exposure apparatus is described in detail in US Pat. No. 5,825,043, to the extent permitted by national legislation designated or selected in this international application. The contents of this US patent are incorporated herein by reference.
- the type of exposure apparatus EX is not limited to an exposure apparatus for manufacturing a semiconductor element that exposes a semiconductor element pattern onto a substrate P, but an exposure apparatus for manufacturing a liquid crystal display element or a display, a thin film magnetic head, It can be widely applied to an exposure device for manufacturing an imaging device (CCD) or a reticle or mask.
- CCD imaging device
- each stage ST1, ST2, and MST may be a type that moves along a guide or a guideless type that does not have a guide.
- a linear motor is used for the stage and row f is disclosed in U.S. Pat.Nos. 5,623,853 and 5,528,118, respectively, as long as permitted by national legislation designated or selected in this international application. The contents of these documents are incorporated herein as part of the text description.
- the drive mechanism of each stage ST1, ST2, and MST includes a magnet unit with a two-dimensionally arranged magnet and an armature unit with a two-dimensionally arranged coil facing each stage ST1, ST2
- a planar motor that drives the MST may be used.
- either the magnet unit or the armature unit is connected to the stages ST1, ST2, and MST, and the other of the magnet unit and the armature unit is provided on the moving surface side of the stages ST1, ST2, and MST. That's fine.
- the exposure apparatus EX of the embodiment of the present application provides various subsystems including the respective constituent elements recited in the claims of the present application with predetermined mechanical accuracy, electrical accuracy, and optical accuracy. Manufactured by assembling to keep. 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, various electrical systems Adjustments are made to achieve electrical accuracy.
- Various subsystem powers The assembly process to the exposure equipment includes mechanical connections, electrical circuit wiring connections, and pneumatic circuit piping connections between the various subsystems. Needless to say, there is an assembly process for each subsystem before the assembly process to the exposure apparatus.
- a microdevice such as a semiconductor device is composed of a step 201 for designing the function and performance of the microdevice, a step 202 for producing a mask (reticle) based on the design step, and a substrate of the device.
- Step 203 for manufacturing a substrate substrate processing (exposure processing) step 204 for exposing the mask pattern onto the substrate by the exposure apparatus EX of the above-described embodiment, and exposing the exposed substrate, device assembly step (dicing process, bonding) (Including processing processes such as process and knocking process) 205, inspection step 206, etc.
- the substrate processing step 204 includes the processing steps described in relation to the drawing such as FIG.
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Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2005800355949A CN101044593B (zh) | 2004-12-09 | 2005-12-09 | 曝光装置、曝光方法及组件制造方法 |
KR1020077001616A KR101281951B1 (ko) | 2004-12-09 | 2005-12-09 | 노광 장치, 노광 방법 및 디바이스 제조 방법 |
EP05814747A EP1821338A4 (en) | 2004-12-09 | 2005-12-09 | EXPOSURE DEVICE, EXPOSURE METHOD AND MANUFACTURING METHOD FOR THE DEVICE |
US11/660,921 US8035799B2 (en) | 2004-12-09 | 2005-12-09 | Exposure apparatus, exposure method, and device producing method |
US13/137,692 US8913224B2 (en) | 2004-12-09 | 2011-09-02 | Exposure apparatus, exposure method, and device producing method |
Applications Claiming Priority (4)
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JP2004356535 | 2004-12-09 | ||
JP2004-356535 | 2004-12-09 | ||
JP2005-350685 | 2005-12-05 | ||
JP2005350685A JP4752473B2 (ja) | 2004-12-09 | 2005-12-05 | 露光装置、露光方法及びデバイス製造方法 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/660,921 A-371-Of-International US8035799B2 (en) | 2004-12-09 | 2005-12-09 | Exposure apparatus, exposure method, and device producing method |
US13/137,692 Continuation US8913224B2 (en) | 2004-12-09 | 2011-09-02 | Exposure apparatus, exposure method, and device producing method |
Publications (1)
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WO2006062188A1 true WO2006062188A1 (ja) | 2006-06-15 |
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PCT/JP2005/022634 WO2006062188A1 (ja) | 2004-12-09 | 2005-12-09 | 露光装置、露光方法及びデバイス製造方法 |
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US (2) | US8035799B2 (ja) |
EP (1) | EP1821338A4 (ja) |
JP (1) | JP4752473B2 (ja) |
KR (1) | KR101281951B1 (ja) |
CN (1) | CN101044593B (ja) |
WO (1) | WO2006062188A1 (ja) |
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- 2005-12-05 JP JP2005350685A patent/JP4752473B2/ja not_active Expired - Fee Related
- 2005-12-09 CN CN2005800355949A patent/CN101044593B/zh not_active Expired - Fee Related
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- 2005-12-09 WO PCT/JP2005/022634 patent/WO2006062188A1/ja active Application Filing
- 2005-12-09 EP EP05814747A patent/EP1821338A4/en not_active Withdrawn
- 2005-12-09 KR KR1020077001616A patent/KR101281951B1/ko active IP Right Grant
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EP1420298A2 (en) * | 2002-11-12 | 2004-05-19 | ASML Netherlands B.V. | Immersion lithographic apparatus and device manufacturing method |
WO2004053950A1 (ja) * | 2002-12-10 | 2004-06-24 | Nikon Corporation | 露光装置及びデバイス製造方法 |
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1898448A1 (en) * | 2005-06-29 | 2008-03-12 | Nikon Corporation | Exposure apparatus, substrate processing method, and device producing method |
EP1898448A4 (en) * | 2005-06-29 | 2011-06-29 | Nikon Corp | EXPOSURE APPARATUS, METHOD FOR PROCESSING SUBSTRATE, AND METHOD FOR MANUFACTURING DEVICE |
EP2037486A4 (en) * | 2006-05-18 | 2012-01-11 | Nikon Corp | EXPOSURE METHOD AND DEVICE, MAINTENANCE METHOD AND COMPONENT MANUFACTURING METHOD |
JP2008283156A (ja) * | 2006-05-18 | 2008-11-20 | Nikon Corp | 露光方法及び装置、メンテナンス方法、並びにデバイス製造方法 |
EP2037486A1 (en) * | 2006-05-18 | 2009-03-18 | Nikon Corporation | Exposure method and apparatus, maintenance method and device manufacturing method |
US8514366B2 (en) | 2006-05-18 | 2013-08-20 | Nikon Corporation | Exposure method and apparatus, maintenance method and device manufacturing method |
JP2008004928A (ja) * | 2006-05-22 | 2008-01-10 | Nikon Corp | 露光方法及び装置、メンテナンス方法、並びにデバイス製造方法 |
WO2007136052A1 (ja) * | 2006-05-22 | 2007-11-29 | Nikon Corporation | 露光方法及び装置、メンテナンス方法、並びにデバイス製造方法 |
JP2013021364A (ja) * | 2006-08-30 | 2013-01-31 | Nikon Corp | 露光装置、デバイス製造方法、及びクリーニング方法 |
US7826030B2 (en) * | 2006-09-07 | 2010-11-02 | Asml Netherlands B.V. | Lithographic apparatus and device manufacturing method |
US8848162B2 (en) | 2006-09-07 | 2014-09-30 | Asml Netherlands B.V. | Lithographic apparatus and device manufacturing method |
US7889313B2 (en) | 2006-10-27 | 2011-02-15 | Kabushiki Kaisha Toshiba | Immersion lithography apparatus and exposure method |
US7609361B2 (en) * | 2007-02-14 | 2009-10-27 | Tokyo Electron Limited | Substrate processing method and substrate processing system |
Also Published As
Publication number | Publication date |
---|---|
US20120026475A1 (en) | 2012-02-02 |
EP1821338A1 (en) | 2007-08-22 |
JP2006190997A (ja) | 2006-07-20 |
CN101044593A (zh) | 2007-09-26 |
US8913224B2 (en) | 2014-12-16 |
KR20070088458A (ko) | 2007-08-29 |
US8035799B2 (en) | 2011-10-11 |
JP4752473B2 (ja) | 2011-08-17 |
EP1821338A4 (en) | 2011-03-09 |
CN101044593B (zh) | 2010-05-05 |
KR101281951B1 (ko) | 2013-07-03 |
US20070252960A1 (en) | 2007-11-01 |
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