WO2006112436A1 - 露光装置及び露光方法、並びにデバイス製造方法 - Google Patents
露光装置及び露光方法、並びにデバイス製造方法 Download PDFInfo
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- WO2006112436A1 WO2006112436A1 PCT/JP2006/308040 JP2006308040W WO2006112436A1 WO 2006112436 A1 WO2006112436 A1 WO 2006112436A1 JP 2006308040 W JP2006308040 W JP 2006308040W WO 2006112436 A1 WO2006112436 A1 WO 2006112436A1
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- Prior art keywords
- liquid
- temperature
- optical path
- exposure
- exposure apparatus
- Prior art date
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70216—Mask projection systems
- G03F7/70341—Details of immersion lithography aspects, e.g. exposure media or control of immersion liquid supply
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2041—Exposure; Apparatus therefor in the presence of a fluid, e.g. immersion; using fluid cooling means
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/708—Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
- G03F7/70858—Environment aspects, e.g. pressure of beam-path gas, temperature
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/708—Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
- G03F7/70858—Environment aspects, e.g. pressure of beam-path gas, temperature
- G03F7/70883—Environment aspects, e.g. pressure of beam-path gas, temperature of optical system
- G03F7/70891—Temperature
Definitions
- Exposure apparatus Exposure apparatus, exposure method, and device manufacturing method
- the present invention relates to an exposure apparatus and exposure method for exposing a substrate through a liquid, and a device manufacturing method.
- the pattern formed on the mask is projected and exposed onto a photosensitive substrate.
- An exposure apparatus is used.
- This exposure apparatus has a mask stage that can move while holding a mask, and a substrate stage that can move while holding a substrate.
- the mask pattern and the substrate stage are moved sequentially, and the pattern of the mask is projected optically.
- Projection exposure is performed on the substrate through the system.
- miniaturization of patterns formed on a substrate is required in order to increase the density of devices.
- an immersion exposure apparatus that fills the optical path space of exposure light with a liquid and exposes the substrate through the liquid as disclosed in Patent Document 1 below. Has been devised.
- Patent Document 1 Pamphlet of International Publication No. 99Z49504
- an immersion exposure apparatus when the temperature of a member that fills the optical path space with liquid to form an immersion space, for example, the temperature of a nozzle member, the temperature of the liquid supplied to the optical path space changes.
- the optical path space may not be filled with a liquid at a desired temperature.
- the various members disposed near the nozzle member may be thermally deformed, and the exposure accuracy may deteriorate.
- the present invention has been made in view of such circumstances, and an exposure apparatus and an exposure method that can prevent performance deterioration due to a temperature change of a liquid immersion space forming member (including a nozzle member, for example) And a device manufacturing method using the exposure apparatus or the exposure method.
- the present invention employs the following configurations corresponding to the respective drawings shown in the embodiments.
- the reference numerals in parentheses attached to each element are merely examples of the element and do not limit each element.
- an exposure apparatus that exposes a substrate (P) through a first liquid (LQ) filled in an optical path space (K1) of exposure light (EL). ! Hurry the optical path space (K1) into liquid (L
- an exposure apparatus provided with a temperature adjustment mechanism (60) that suppresses a temperature change of the immersion space forming member (70, etc.) accompanying the release of the formation of 2).
- the temperature adjustment mechanism for suppressing the temperature change of the immersion space forming member since the temperature adjustment mechanism for suppressing the temperature change of the immersion space forming member is provided, the exposure accuracy is deteriorated due to the temperature change of the immersion space forming member. Can be prevented.
- a device can be manufactured using an exposure apparatus in which deterioration of exposure accuracy is prevented.
- An exposure method is provided that suppresses the temperature change of the immersion space forming member (70, etc.) accompanying this.
- the third aspect of the present invention it is possible to prevent the deterioration of exposure accuracy by suppressing the temperature change of the immersion space forming member.
- a device manufacturing method using the exposure method of the above aspect there is provided.
- a device can be manufactured using an exposure method that can prevent deterioration of exposure accuracy.
- FIG. 1 is a schematic block diagram that shows an exposure apparatus according to a first embodiment.
- FIG. 2 is a diagram for explaining a liquid immersion mechanism and a temperature adjustment mechanism.
- FIG. 3A is a diagram for explaining the principle of a liquid recovery operation by a liquid immersion mechanism.
- FIG. 3B is a diagram for explaining the principle of the liquid recovery operation by the liquid immersion mechanism.
- ⁇ 4 It is a diagram for explaining the liquid immersion mechanism and the temperature adjustment mechanism.
- FIG. 5A is a diagram for explaining the operation of the temperature adjustment mechanism.
- FIG. 5B is a diagram for explaining the operation of the temperature adjustment mechanism.
- FIG. 6 is an enlarged view showing a main part of an exposure apparatus according to a second embodiment.
- FIG. 7 is an enlarged view showing a main part of an exposure apparatus according to a third embodiment.
- FIG. 8 is an enlarged view showing a main part of an exposure apparatus according to a fourth embodiment.
- FIG. 9 is an enlarged view showing a main part of an exposure apparatus according to a fifth embodiment.
- FIG. 10 shows an exposure apparatus according to a sixth embodiment.
- FIG. 11 is a flowchart showing an example of a microdevice manufacturing process.
- FIG. 1 is a schematic block diagram that shows an exposure apparatus EX according to the first embodiment.
- the exposure apparatus EX has a mask stage MST that can move while holding the mask M, and a substrate holder PH that holds the substrate P.
- the exposure apparatus EX moves while holding the substrate P in the substrate holder PH.
- Possible substrate board Stage ST1 and measurement stage ST2 that can be moved with at least a part of the measurement device that performs measurements related to exposure processing, and illumination optics that illuminate mask M held by mask stage MST with exposure light EL Control system CONT that controls the overall operation of the projection optical system PL that projects the pattern image of the mask IL illuminated by the exposure system EL and the exposure light EL onto the substrate P held by the substrate stage ST1 and the entire exposure apparatus EX And have.
- Each of the substrate stage ST1 and the measurement stage ST2 can be moved independently of each other on the base member BP on the image plane side of the projection optical system PL!
- the exposure apparatus EX of the present embodiment is an immersion exposure apparatus to which an immersion method is applied in order to substantially shorten the exposure wavelength to improve the resolution and substantially increase the depth of focus.
- An immersion mechanism 1 is provided for filling the optical path space K1 of the exposure light EL on the image plane side of the projection optical system PL with the liquid LQ to form an immersion space.
- the liquid immersion mechanism 1 is provided near the image plane side of the projection optical system PL, and has a nozzle member 70 having a supply port 12 for supplying the liquid LQ to the optical path space K1 and a recovery port 22 for recovering the liquid LQ in the optical path space K1.
- the liquid supply device 11 for supplying the liquid LQ to the image plane side of the projection optical system PL via the supply port 12 provided in the first supply pipe 13 and the nozzle member 70, and the nozzle member 70.
- a liquid recovery device 21 that recovers the liquid LQ on the image plane side of the projection optical system PL via a recovery port 22 and a recovery tube 23 is provided.
- a flow path (supply flow path) 14 that connects the supply port 12 and the first supply pipe 13 is provided inside the nozzle member 70, and the recovery port 22 and the recovery pipe 23.
- a flow path (recovery flow path) 24 is provided to connect the two.
- the nozzle member 70 is formed in an annular shape so as to surround at least the final optical element LS 1 closest to the image plane of the projection optical system PL among the plurality of optical elements constituting the projection optical system PL.
- the exposure apparatus EX of the present embodiment includes an immersion region of a liquid LQ that is larger than the projection region AR and smaller than the substrate P, on a part of the substrate P including the projection region AR of the projection optical system PL.
- the local liquid immersion method is used to form LR locally.
- the exposure apparatus EX uses the liquid immersion mechanism 1 while transferring at least the pattern image of the mask M to the substrate P, and uses the liquid immersion mechanism 1 to make the final optical element LS 1 and the projection optical system PL closest to the image plane of the projection optical system PL
- the exposure light EL between the substrate P placed on the image plane side of the light and the optical path space K1 of the EL is filled with liquid LQ, and the projection optical system PL and the optical path space
- the control device CONT supplies a predetermined amount of liquid LQ using the liquid supply device 11 of the liquid immersion mechanism 1 and collects a predetermined amount of liquid LQ using the liquid recovery device 21.
- the liquid LQ immersion region LR is locally formed on the substrate P.
- the optical path space K1 is filled with the liquid LQ with the projection optical system PL and the substrate P facing each other.
- a scanning exposure apparatus that exposes a pattern formed on mask M onto substrate P while synchronously moving mask M and substrate P in the scanning direction.
- the synchronous movement direction (scanning direction) of the mask M and the substrate P in the horizontal plane is the Y axis direction
- the direction orthogonal to the Y axis direction is the X axis direction (non-scanning).
- Direction the direction perpendicular to the X-axis and Y-axis directions (in this example, the direction parallel to 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 the 0 0, ⁇ ⁇ , and ⁇ ⁇ directions, respectively.
- the “substrate” includes a semiconductor wafer coated with a film such as a resist or a protective film.
- the “mask” includes a reticle on which a device pattern to be projected onto a substrate is reduced.
- the exposure apparatus ⁇ is used after the liquid LQ in the optical path space K1 has been removed.
- a temperature adjustment mechanism 60 is provided for suppressing a temperature change of the immersion space forming member (in this embodiment, the nozzle member 70) after the formation of the immersion space is released.
- the temperature adjustment mechanism 60 connects the liquid supply device 11 and the recovery flow path 24 provided in the nozzle member 70, and supplies the liquid LQ sent from the liquid supply device 11 to the recovery flow path 24. 15 is provided.
- the illumination optical system IL collects the exposure light source, the optical integrator that equalizes the illuminance of the light beam emitted from the exposure light source, and the exposure light EL from the optical integrator. It has a condenser lens that shines, a relay lens system, and a field stop that sets the illumination area on the mask M with exposure 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.
- Illumination optical system IL force Dew light emitted EL, such as bright lines (g-line, h-line, i-line) and KrF excimer laser light (wavelength 248nm) emitted from mercury lamps, etc. Light), vacuum ultraviolet light (VUV light) such as ArF excimer laser light (wavelength 193 nm) and F laser light (wavelength 157 nm).
- ArF excimer laser light is used.
- pure water is used as the liquid LQ.
- Pure water is not only ArF excimer laser light, but also far ultraviolet light (DUV light) such as emission lines (g-line, h-line, i-line) emitted from mercury lamp force and KrF excimer laser light (wavelength 248nm). Can also be transmitted.
- DUV light far ultraviolet light
- emission lines g-line, h-line, i-line
- KrF excimer laser light wavelength 248nm
- the mask stage MST is movable while holding the mask M.
- the mask stage MST holds the mask M by, for example, vacuum suction.
- the mask stage MST is in a plane perpendicular to the optical axis AX of the projection optical system PL while holding the mask M by driving the mask stage driving device MD including a linear motor controlled by the control device CONT. In other words, it can move two-dimensionally in the XY plane and can rotate slightly in the ⁇ Z direction.
- a movable mirror 51 is provided on the mask stage MST.
- a laser interferometer 52 is provided at a position facing the moving mirror 51! /.
- 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 52. .
- the measurement result of the laser interferometer 52 is output to the control device CONT.
- the control device CONT drives the mask stage drive device MD and holds it on the mask stage MST! To control the position of the mask M.
- the movable mirror 51 may include not only a plane mirror but also a corner cube (retlet reflector), and instead of fixing the movable mirror 51, for example, the end surface (side surface) of the mask stage MST is formed by mirror finishing. A reflective surface may be used.
- the mask stage MST is disclosed in, for example, Japanese Patent Laid-Open No. 8-130179 (corresponding US Pat. 6, 721, 034) may be possible.
- Projection optical system PL projects the pattern of mask M onto substrate ⁇ at a predetermined projection magnification ⁇ , and is composed of a plurality of optical elements, which are held by lens barrel ⁇ . It is.
- the projection optical system PL is a reduction system having a projection magnification j8 of 1Z4, 1Z5, or 1Z8, for example, and forms a reduced image of the mask pattern in the projection area AR conjugate with the illumination area.
- the projection optical system PL may be any of a reduction system, a unity magnification system, and an enlargement system.
- the projection optical system PL may be any of a refractive system that does not include a reflective optical element, a reflective system that does not include a refractive optical element, and a catadioptric system that includes a reflective optical element and a refractive optical element.
- the final optical element LSI closest to the image plane of the projection optical system PL is exposed from the lens barrel PK.
- the final optical element LSI may be a force-refractive parallel plane plate that is a lens element having refractive power.
- the substrate stage ST1 has a substrate holder PH that holds the substrate P, and is movable while holding the substrate P on the substrate holder PH.
- the substrate holder PH holds the substrate P by, for example, vacuum suction.
- a recess 58 is provided on the substrate stage ST1, and the substrate holder PH for holding the substrate P is disposed in the recess 58.
- the upper surface 57 of the substrate stage ST 1 other than the recess 58 is a flat surface that is substantially the same height (level) as the surface of the substrate P held by the substrate holder PH. This is because, during the exposure operation of the substrate P, a part of the liquid immersion region LR described above protrudes from the surface of the substrate P and is formed on the upper surface 57.
- a predetermined region surrounding the substrate P may be substantially the same as the surface of the substrate P. If the optical path space K1 on the image plane side of the projection optical system PL can be continuously filled with the liquid LQ (that is, the immersion area LR can be satisfactorily maintained), the upper surface 57 of the substrate stage ST1 and the substrate holder PH There may be a step between the surface of the substrate P held on the substrate.
- the substrate holder PH may be formed integrally with a part of the substrate stage ST1, but in this embodiment, the substrate holder PH and the substrate stage ST1 are separately configured, for example, by vacuum suction or the like.
- the holder PH shall be fixed in the recess 58.
- Substrate stage ST1 includes a linear motor and the like controlled by control device CONT.
- the substrate P By driving the plate stage driving device SD1, the substrate P can be moved two-dimensionally in the XY plane on the base member BP and finely rotated in the ⁇ Z direction while being held by the substrate holder PH.
- the substrate stage ST1 can also move in the Z-axis direction, the 0X direction, and the ⁇ Y direction. Accordingly, the surface of the substrate P held on 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 53 is provided on the side surface of the substrate stage ST1.
- a laser interferometer 54 is provided at a position facing the movable mirror 53.
- the position and rotation angle of the substrate P on the substrate stage ST1 in the two-dimensional direction are measured in real time by the laser interferometer 54.
- the exposure apparatus EX includes a focus leveling detection system that detects surface position information of the surface of the substrate P held by the substrate stage ST1.
- the laser interferometer 54 for example, an optical system
- the position of the substrate stage ST1 in the Z-axis direction and ⁇ X, ⁇ Y.
- Details of the exposure apparatus equipped with a laser interferometer capable of measuring the position of the substrate stage ST1 in the Z-axis direction are disclosed in, for example, Japanese Patent Publication No. 2001-510577 (corresponding international publication No. 1999Z28790 pamphlet).
- a reflecting surface formed by mirror-processing a part (side surface, etc.) of the substrate stage ST1 may be used instead of fixing the movable mirror 53 to the substrate stage ST1, for example, a reflecting surface formed by mirror-processing a part (side surface, etc.) of the substrate stage ST1 may be used.
- the focus / leveling detection system measures the position information of the substrate P in the Z-axis direction at each of the plurality of measurement points, so that the tilt information (rotation of the substrate P in the ⁇ X and ⁇ Y directions)
- the plurality of measurement points may be set at least partially within the immersion area LR (or projection area AR), or all of the measurement points may be in the immersion area LR. It may be set outside.
- the laser interferometer 54 can measure the position information of the substrate P in the Z-axis, ⁇ X and ⁇ Y directions
- the position information in the Z-axis direction can be measured during the exposure operation of the substrate P.
- the position of the substrate P in the Z-axis, ⁇ X and 0 Y directions is controlled using the measurement results of the laser interferometer 54 at least during the exposure operation without the need to provide a focus and repelling detection system. Even so,
- the measurement result of the laser interferometer 54 is output to the control device CONT.
- the detection result of the focus' repelling 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 surface of the substrate P is aligned with the image plane formed via the projection optical system PL and the liquid LQ, and the X-axis direction, Y-axis direction, and ⁇ of the substrate P are determined based on the measurement result of the laser interferometer 54. Perform position control in the Z direction.
- Measurement stage ST2 is equipped with various measurement devices (including measurement members) that perform measurements related to exposure processing, and is provided on the image plane side of projection optical system PL so as to be movable on base member BP. It has been. Measurement stage ST2 is driven by measurement stage drive device SD2. The measurement stage driving device SD2 is controlled by the control device CONT. Then, the control device CONT can move the substrate stage ST1 and the measurement stage ST2 independently of each other on the base member BP via the stage driving devices SD1 and SD2. The measurement stage drive SD2 has the same configuration as the substrate stage drive SD1, and the measurement stage ST2 is driven by the measurement stage drive SD2 in the X-axis, Y-axis, and Z-axis directions in the same way as the substrate stage ST1.
- a movable mirror 55 is provided on the side surface of the measurement stage ST2, and a laser interferometer 56 is provided at a position facing the movable mirror 55.
- the position and rotation angle of the measurement stage ST 2 in the two-dimensional direction are measured in real time by the laser interferometer 56, and the control device CONT controls the position of the measurement stage ST2 based on the measurement result of the laser interferometer 56.
- the laser interferometer 56 for example, an optical system
- 0 X, ⁇ Y The rotational angle of the direction may be measurable.
- a reflection surface formed by mirror-finishing a part (side surface, etc.) of the measurement stage ST2 may be used.
- a measuring device mounted on the measuring stage ST2 a plurality of reference marks as disclosed in, for example, Japanese Patent Laid-Open No. 5-21314 (corresponding US Pat. No. RE36,730) are formed.
- Reference mark plates such as those disclosed in Japanese Patent Laid-Open No. 57-117238 (corresponding US Pat. No. RE32, 795) can be used to measure uneven illuminance, or Japanese Patent Laid-Open No. 2001-267239 (corresponding US Pat. 6, 721, 039)
- 2002-198303 examples thereof include an image measurement sensor and a dose sensor (illuminance sensor) as disclosed in Japanese Patent Laid-Open No. 11-16816 (corresponding to US Publication 2002Z0061469A1).
- a measurement device mounted on the measurement stage ST2 for example, it is disclosed in International Publication No. 99Z60361 pamphlet (corresponding patent 6, 819, 414), Japanese Patent Application Laid-Open No. 2002-71514, US Patent No. 6650399, etc.
- Examples thereof include a wavefront aberration measuring device, and a reflecting portion disclosed in, for example, Japanese Patent Application Laid-Open No. 62-183522 (corresponding US Pat. No. 4,780,747).
- the measurement stage ST2 is a dedicated stage for performing the measurement process related to the exposure process, and is configured not to hold the substrate P.
- the substrate stage ST1 performs the measurement related to the exposure process.
- the measurement device is not installed.
- the exposure apparatus provided with such a measurement stage for example, Japanese Patent Application Laid-Open No. 11-135400 (corresponding international publication 1999Z23692) and Japanese Patent Application Laid-Open No. 2000-164504 (corresponding US Pat. No. 6,897,963). ) And the like. At least some of the above measuring devices may be mounted on the substrate stage ST1! / ⁇ .
- the control device CONT is the substrate By driving the upper surface 57 of the stage ST1 and the upper surface 59 of the measurement stage ST2, for example, at least one of the stages ST1 and ST2 in the Z-axis direction (and Z or 0 X, 0 Y direction), It can be controlled (adjusted) so that it is almost the same position (height).
- control device CONT causes the upper surface 57 of the substrate stage ST1 and the upper surface 59 of the measurement stage ST2 to contact (or approach) while performing the supply operation and the recovery operation of the liquid LQ by the liquid immersion mechanism 1.
- the substrate stage ST1 and the measurement stage ST2 are moved together in the X-axis direction under the projection optical system PL, for example, to form an immersion region LR formed on the image plane side of the projection optical system PL.
- substrate stage ST1 and measurement stage ST2 The upper surfaces 57 and 59 are set to almost the same height (Z position), and the driving is performed in parallel.
- the liquid immersion mechanism 1 supplies the liquid LQ to fill the optical path space K1 on the light emission side of the final optical element LSI with the liquid LQ, and includes a tank for storing the liquid LQ, a pressure pump , Equipped with a temperature control device that adjusts the temperature of the supplied liquid LQ, and a filter unit that removes foreign matter in the liquid LQ.
- a temperature control device 18 is shown as an example.
- One end of a first supply pipe 13 is connected to the liquid supply device 11, and the other end of the first supply pipe 13 is connected to a nozzle member 70.
- the liquid supply operation of the liquid supply device 11 is controlled by the control device CONT. Note that the tank, pressure pump, temperature control device, filter unit, etc. of the liquid supply device 11 do not need to be equipped with the exposure device EX. Also good.
- the liquid recovery device 21 of the liquid immersion mechanism 1 is for recovering the liquid LQ filled in the optical path space K1 on the light emission side of the final optical element LSI, and includes a vacuum system such as a vacuum pump, It is equipped with a gas-liquid separator that separates the recovered liquid LQ and gas, and a tank that stores the recovered liquid LQ.
- a recovery pipe 23 is connected to the liquid recovery apparatus 21, and the other end of the recovery pipe 23 is connected to a nozzle member 70.
- the liquid recovery operation of the liquid recovery device 21 is controlled by the control device CONT.
- the vacuum system, gas-liquid separator, tank, etc. of the liquid recovery apparatus 21 may be replaced with facilities such as a factory where the exposure apparatus EX is installed, which is not necessarily provided with the exposure apparatus EX.
- the nozzle member 70 is at least one optical element arranged on the image plane side of the projection optical system PL.
- the nozzle member 70 includes a bottom plate portion 71 facing the surface of the substrate P held by the substrate stage ST1, an inclined plate portion 72 facing the side surface LT of the final optical element LSI, a side plate portion 73, and a top plate portion 75. And have.
- the inclined plate portion 72 is formed in a mortar shape, and the final optical element LSI is arranged inside the hole portion 70H formed by the inclined plate portion 72.
- the side surface LT of the final optical element LS 1 and the inner side surface 70T of the hole 70H of the nozzle member 70 are opposed to each other with a predetermined gap.
- Bottom plate The unit 71 is disposed between the lower surface of the final optical element LSI and the substrate P.
- the bottom plate 71 is provided with an opening 74 for allowing the exposure light EL to pass therethrough.
- the upper surface 71A of the bottom plate portion 71 is opposed to the lower surface of the final optical element LSI via a predetermined gap, and the lower surface 71B of the bottom plate portion 71 is opposed to the surface of the substrate P via a predetermined gap.
- the upper surface 71A of the bottom plate portion 71 is connected to the lower end portion of the inner side surface 70T.
- the bottom surface 71B of the bottom plate portion 71 is a flat surface.
- the nozzle member 70 includes a supply port 12 that supplies the liquid LQ to the optical path space K1 of the exposure light EL, and a recovery port 22 that recovers the liquid LQ of the optical path space K1 of the exposure light EL. Further, the nozzle member 70 includes a supply channel 14 connected to the supply port 12 and a recovery channel 24 connected to the recovery port 22.
- the supply port 12 is for supplying the liquid LQ to the optical path space K1, and is provided in the vicinity of the upper surface 71A of the bottom plate portion 71 of the inner surface 70T of the nozzle member 70.
- the supply port 12 is provided outside the optical path space K1, and in the present embodiment, one supply port 12 is provided on each of both sides in the X-axis direction with respect to the optical path space K1.
- the supply ports 12 may be provided on both sides in the Y-axis direction with respect to the optical path space K1, or a plurality of supply ports 12 may be provided so as to surround the optical path space K1.
- the supply flow path 14 is formed by a slit-like through-hole penetrating the inside of the inclined plate portion 72 of the nozzle member 70 along the inclination direction.
- the supply port 12 and the first supply pipe 13 are connected via a supply flow path 14.
- the other end of the first supply pipe 13 is connected to the upper end of the supply flow path 14, and the supply port 12 is connected to the lower end of the supply flow path 14. Therefore, the liquid supply device 11 and the supply port 12 are connected via the first supply pipe 13 and the supply flow path 14, and the liquid LQ is supplied from the liquid supply device 11 to the supply port 12.
- the liquid LQ supplied from the supply port 12 fills a predetermined space (immersion space) K2 between the lower surface of the projection optical system PL and the nozzle member 70 and the surface of the substrate P, including the optical path space K1. It is.
- the liquid LQ is held between the projection optical system PL and the nozzle member 70 and the substrate P.
- the liquid LQ filled in the predetermined space K2 comes into contact with at least a part of the nozzle member 70.
- valve mechanism 13 B that can open and close the flow path of the first supply pipe 13 is provided in the middle of the flow path of the first supply pipe 13.
- the valve mechanism 13B is controlled by the controller CONT. Is done.
- the control device CONT can stop the supply of the liquid LQ from the liquid supply device 11 to the supply port 12 by operating the valve mechanism 13B to close the flow path of the first supply pipe 13.
- the recovery port 22 is for recovering the liquid LQ in the optical path space K1, and is provided on the lower surface of the nozzle member 70 facing the substrate P.
- the recovery port 22 is provided in an annular shape so as to surround the optical path space K1 outside the supply port 12 and the bottom plate portion 71 with respect to the optical path space K1.
- the recovery flow path 24 is provided inside the nozzle member 70.
- the nozzle member 70 is formed with a space portion that opens downward between the inclined plate portion 72 and the side plate portion 73, and the recovery channel 24 is constituted by the space portion.
- the recovery port 22 is disposed at the lower end (opening portion) of the space and is connected to the recovery flow path 24.
- the other end of the recovery pipe 23 is connected to a part of the recovery flow path 24. Therefore, the liquid recovery device 21 and the recovery port 22 are connected via the recovery flow path 24 and the recovery pipe 23.
- the liquid recovery device 21 including the vacuum system exists in a predetermined space K2 between the substrate P, the nozzle member 70, and the projection optical system PL, including the optical path space K1, by setting the recovery flow path 24 to a negative pressure.
- Liquid LQ can be recovered through recovery port 22.
- the liquid LQ filled in the optical path space K1 (predetermined space K2) flows into the recovery channel 24 via the recovery port 22 of the nozzle member 70, and the liquid LQ that flows into the recovery channel 24 is liquid. It is recovered by the recovery device 21.
- the liquid recovery device 21 recovers the liquid LQ in the optical path space K1 (predetermined space K2) through the recovery port 22 by setting the recovery flow path 24 to a negative pressure, and Liquid LQ can be recovered.
- the nozzle member 70 includes a porous member 25 having a plurality of holes provided so as to cover the recovery port 22.
- the porous member 25 is formed in an annular shape in plan view.
- the porous member 25 may be a ceramic porous body or the like, but can be constituted by, for example, a mesh member having a plurality of holes. Examples of materials that can form the porous member 25 include titanium, stainless steel (for example, SUS316), and ceramics.
- the porous member 25 is made of titanium and has lyophilicity (hydrophilicity) with respect to the liquid LQ.
- the porous member 25 is made of a lyophilic material other than titanium. You may make it.
- the porous member 25 may be made of stainless steel (for example, SUS316) and subjected to lyophilic treatment (surface treatment) to make it lyophilic! ⁇ .
- lyophilic treatment surface treatment
- a process of attaching acid chromium to the porous member 25 can be mentioned. Specifically, for example, “GOLDEP” processing or “GOLDEP WHI TE” processing of SHINKO ENVIRONMENTAL SOLUTION CO., LTD. Further, by performing such a surface treatment, elution of impurities from the porous member 25 to the liquid LQ can be suppressed.
- the porous member 25 has a lower surface 26 facing the substrate P held by the substrate stage ST1.
- the lower surface 26 of the porous member 25 is substantially flat.
- the porous member 25 is provided in the recovery port 22 so that the lower surface 26 thereof is substantially parallel to the surface of the substrate P (that is, the XY plane) held on the substrate stage ST1. Further, the lower surface 26 of the porous member 25 and the lower surface 71B of the bottom plate portion 71 provided in the recovery port 22 are provided at substantially the same position (height) with respect to the surface of the substrate P.
- FIG. 3A is a cross-sectional view in which a part of the porous member 25 is enlarged, and is a schematic diagram for explaining a liquid recovery operation performed through the porous member 25.
- the liquid immersion mechanism 1 is provided so as to recover only the liquid LQ via the recovery port 22. Therefore, the liquid immersion mechanism 1 can satisfactorily recover the liquid LQ without causing the gas to substantially flow into the recovery channel 24 via the recovery port 22.
- the recovery port 22 is provided with a porous member 25.
- a substrate P is disposed below the porous member 25.
- a gas space and a liquid space are formed between the porous member 25 and the substrate P. More specifically, a gas space is formed between the first hole 25Ha of the multi-hole member 25 and the substrate P, and a liquid space is formed between the second hole 25Hb of the porous member 25 and the substrate P.
- a recovery flow path (flow path space) 24 is formed above the porous member 25.
- the interface between the liquid LQ and the gas can be maintained inside the first hole 25Ha of the porous member 25, and from the gas space below the porous member 25 to the flow path space 24 via the first hole 25Ha. Invasion of gas can be suppressed.
- a liquid space is formed below the second hole 25Hb (substrate P side) of the porous member 25. Therefore, only the liquid LQ can be recovered through the second hole 25Hb.
- the surface tension ⁇ of the porous member 25 is substantially constant, and the liquid immersion mechanism 1 controls the suction force of the liquid recovery device 21 so that the pressure Pc of the flow path space 24 above the porous member 25 is satisfied so as to satisfy the above condition. adjust.
- the contact angle ⁇ of the porous member 25 with the liquid LQ is It is desirable to be as small as possible.
- the porous member 25 is lyophilic with respect to the liquid LQ and has a sufficiently small contact angle ⁇ .
- each hole formed in the porous member 25 is formed such that the opening diameter on the upper surface side of the porous member 25 and the opening diameter on the lower surface side are substantially the same.
- the opening diameter on the upper surface side and the opening diameter on the lower surface side of each hole of the force porous member 25 may be different.
- the absolute value of the above (Pa ⁇ Pc) should be made larger. I know you can.
- the porous member 25 is wet (the upper surface of the porous member 25 is covered with the liquid LQ), and the flow path space 24 above the porous member 25 is By controlling the pressure difference with the lower space (pressure difference between the upper surface and the lower surface of the porous member 25) so as to satisfy the above conditions, the hole 25H force of the porous member 25 also recovers only the liquid LQ. As a result, it is possible to suppress the occurrence of vibration caused by sucking the liquid LQ and the gas together.
- the liquid LQ in the flow path space 24 does not move to the space below the porous member 25. That is, by satisfying the above conditions, the liquid LQ force in the channel space (recovery channel) 24 that is the space above the porous member 25 is dripped into the space below the porous member 25 via the porous member 25. Is not going
- the force flow path space 24 in which the gas space is formed in a part of the flow path space 24 is filled with the liquid LQ.
- the temperature adjustment mechanism 60 is for suppressing the temperature change of the nozzle member 70 after the liquid LQ in the optical path space K1 is removed.
- the liquid LQ is held between the projection optical system PL and the nozzle member 70 and the substrate P, and the liquid LQ is held in the predetermined space K2 including the optical path space K1.
- LQ is filled, but after removing the liquid LQ in the predetermined space K2 including the optical path space K1 (after releasing the immersion space), at least a part of the liquid LQ in contact with the nozzle member 70 is vaporized there is a possibility.
- the nozzle member 70 may change (decrease) in temperature due to the heat of vaporization caused by the vaporization of the liquid LQ.
- the temperature adjustment mechanism 60 is configured so that the liquid LQ in the predetermined space K2 including the optical path space K1 is removed, and then at least part of the liquid LQ that is in contact with the nozzle member 70 is vaporized. Reduces temperature drop.
- the temperature adjustment mechanism 60 is connected to the liquid supply device 11 and the recovery flow path 24 provided in the nozzle member 70, and recovers the liquid LQ sent from the liquid supply device 11.
- Road 24 A second supply pipe 15 is provided. That is, the liquid supply device 11 can supply the liquid LQ to the recovery flow path 24 via the second supply pipe 15.
- the temperature adjustment mechanism 60 supplies the liquid LQ for adjusting the temperature of the nozzle member 70 from the liquid supply device 11 to the recovery flow path 24 via the second supply pipe 15.
- the liquid LQ supplied from the liquid supply device 11 and supplied from the supply port 12 to the optical path space K1 and the temperature of the nozzle member 70 are sent from the liquid supply device 11 and supplied to the second supply pipe.
- the liquid LQ supplied from 15 to the recovery flow path 24 is the same liquid (pure water).
- the temperature adjustment mechanism 60 is provided in the middle of the second supply pipe 15, and is a mass flow controller that controls the amount of liquid LQ per unit time supplied from the liquid supply apparatus 11 to the recovery flow path 24. It has a flow controller 16 called. The operation of the flow controller 16 is controlled by the controller CONT.
- the temperature adjustment mechanism 60 includes a temperature controller 17 provided in the middle of the second supply pipe 15, and capable of adjusting the temperature of the liquid LQ supplied from the liquid supply apparatus 11 to the recovery flow path 24. ing.
- the operation of the temperature controller 17 is controlled by the control device CONT.
- the temperature controller 17 is a temperature controller different from the temperature controller 18 provided in the liquid supply device 11, and the control device CONT independently operates each of the temperature controller 17 and the temperature controller 18. Can be controlled.
- the temperature controller 17 is disposed between the liquid supply device 11 including the temperature control device 18 and the nozzle member 70, and further controls the temperature of the liquid LQ supplied from the liquid supply device 11 via the temperature control device 18. It can be adjusted.
- the control device CONT drives the liquid supply device 11 of the immersion mechanism 1 to unit time from the supply port 12 to the predetermined space K2 including the optical path space K1.
- the liquid recovery device 21 is driven to recover a predetermined amount of liquid LQ per unit time from the predetermined space K2 including the optical path space K1 through the recovery port 22. Then, the predetermined space K2 including the optical path space K1 is filled with the liquid LQ, and the liquid immersion area LR of the liquid LQ is locally formed.
- the liquid LQ delivered from the liquid supply device 11 under the control of the control device CONT flows through the first supply pipe 13 and then from the supply port 12 via the supply flow path 14 of the nozzle member 70. Projection light It is supplied to the space between the final optical element LSI of the academic system PL and the bottom plate 71.
- the liquid LQ supplied from the supply port 12 flows through the upper surface 71A of the bottom plate portion 71 and then reaches the opening 74. Thereafter, the liquid LQ flows into the predetermined space K2 between the nozzle member 70 and the substrate P through the opening 74, and the predetermined space K2 including the optical path space K1 of the exposure light EL is filled with the liquid LQ.
- the liquid immersion mechanism 1 supplies the exposure light between the final optical element LSI and the substrate P by supplying the liquid LQ from the supply port 12 to the space between the final optical element LSI and the bottom plate 71. Fill the optical path space K1 of EL with liquid LQ.
- the liquid recovery apparatus 21 including the vacuum system driven under the control of the control apparatus CONT exists in the predetermined space K2 including the optical path space K1 by making the recovery flow path 24 negative pressure.
- the liquid LQ is recovered through the recovery port 22 in which the porous member 25 is disposed.
- the liquid LQ in the predetermined space K2 flows into the recovery channel 24 via the recovery port 22 of the nozzle member 70, flows through the recovery pipe 23, and is recovered by the liquid recovery device 21.
- the liquid recovery apparatus 21 adjusts the pressure in the flow path space 24 (pressure on the upper surface of the porous member 25 (negative pressure)) using a pressure adjusting mechanism (not shown), and passes through the porous member 25. Collect only liquid LQ from collection port 22.
- the control device CONT while the optical path space K1 of the exposure light EL is filled with the liquid LQ, moves the projection optical system PL and the substrate P relatively while moving the pattern image of the mask M to the projection optical system PL and Projection exposure is performed on the substrate P through the liquid LQ in the optical path space K1.
- the exposure apparatus EX of the present embodiment is a scanning exposure apparatus whose scanning direction is the Y-axis direction
- the control apparatus CONT controls the mask stage MST and the substrate stage ST1 to control the mask M
- the substrate P is exposed by irradiating the substrate P with the exposure light EL while moving the substrate P and the substrate P in the Y-axis direction.
- the liquid LQ is held between the nozzle member 70 and the substrate P and fills the optical path space K1.
- liquid LQ immersion region LR is formed on measurement stage ST2, and control device CONT uses a measurement device mounted on measurement stage ST2. Then, measurement processing relating to exposure processing is performed as necessary.
- the immersion region LR can be moved between the upper surface 57 of the substrate stage ST1 and the upper surface 59 of the measurement stage ST2.
- the substrate stage ST1 can be projected to replace the substrate P.
- the measurement stage ST2 is made to face the lower surface of the final optical element LSI of the projection optical system PL by exchanging with the substrate stage ST1. Can be used to keep the optical path space K1 filled with liquid LQ.
- the measurement stage ST2 faces the final optical element LSI
- the measurement device and Z or measurement member (for example, a reference mark) mounted on the measurement stage ST2 is used as necessary. Then, a predetermined measurement operation is performed. Further, for example, when the substrate stage ST1 is disposed at a position facing the final optical element LSI for the exposure operation of the substrate P, the measurement stage ST2 is placed at a predetermined position (retracted position) away from the final optical element LSI. Moved.
- at least one of the substrate stage ST1 and the measurement stage ST2 is disposed under the projection optical system PL, so that the optical path space K1 is continuously filled with the liquid LQ (that is, the final optical element).
- the immersion space (immersion area LR) can be maintained (held) on the LSI exit side.
- a predetermined amount F1 of liquid LQ per unit time is supplied from the supply port 12 to the predetermined space K2 including the optical path space K1. It is.
- the liquid supply amount per unit time supplied from the supply port 12 to the optical path space K1 (predetermined space K2) is appropriately referred to as “first amount Fl”.
- the liquid immersion mechanism 1 recovers the liquid L Q existing in the optical path space K1 (predetermined space K2) through the recovery port 22 in a predetermined amount per unit time.
- the liquid immersion mechanism 1 includes a liquid supply amount (first amount F1) per unit time supplied from the supply port 12 to the optical path space K1 (predetermined space K2) and an optical path space K1 (predetermined amount) via the recovery port 22. Make the liquid recovery volume per unit time recovered from space K2) almost the same. That is, the amount of the liquid LQ that flows from the predetermined space K2 into the recovery channel 24 via the recovery port 22 is substantially equal to the first amount F1.
- optical path space K1 This balances the amount of liquid supplied to the optical path space K1 and the amount of liquid recovered from the optical path space K1, expanding the immersion area LR, leaking the liquid LQ, or draining the liquid LQ (liquid running out), etc.
- the optical path space K1 is filled with the liquid LQ while preventing inconvenience.
- the control device CONT connects the second supply pipe 15 from the liquid supply device 11 while the optical path space K1 of the exposure light EL is filled with the liquid LQ. Then, the liquid LQ of the predetermined amount F2 per unit time is continuously supplied to the recovery flow path 24. Snow That is, the control device CONT supplies the liquid LQ from the liquid supply device 11 to the recovery channel 24 via the second supply pipe 15 constituting the temperature adjustment mechanism 60 even when the substrate P is subjected to immersion exposure.
- the optical path space K1 is filled with the liquid LQ.
- the liquid supply amount per unit time supplied from the second supply pipe 15 (temperature adjustment mechanism 60) to the recovery flow path 24 (nozzle member 70) is appropriately referred to as “second amount F2”.
- the collection channel 24 has a sum of the first amount F1 and the second amount F2. Liquid LQ in the amount of (F1 + F2) will flow in.
- the liquid recovery device 21 reduces the liquid LQ in the predetermined space K2 by applying a negative pressure to the recovery flow path 24 with a suction force W1 corresponding to the amount of liquid LQ flowing into the recovery flow path 24 (F1 + F2).
- the liquid LQ that has flowed into the recovery flow path 24 from the second supply pipe 15 is recovered while flowing into the recovery flow path 24 via the recovery port 22 for recovery.
- the temperature of the liquid LQ supplied from the supply port 12 to the optical path space K1 (predetermined space K2) and the liquid LQ supplied to the recovery flow path 24 via the second supply pipe 15 Although it may be set to a value different from the temperature, in this embodiment, it is adjusted to substantially the same value.
- the control device CONT controls the valve mechanism 13B to close the flow path of the first supply pipe 13 and to close the optical path space K1 from the supply port 12 Stop supplying liquid LQ to.
- the control device CONT continues to drive the liquid recovery device 21.
- the negative pressure of the recovery flow path 24 is maintained, so that the liquid LQ in the predetermined space K2 including the optical path space K1 is circulated through the recovery port 22.
- the optical path space K1 (predetermined space K2) will be in a state where all the liquid LQ has been collected.
- FIG. 4 is a diagram showing a state after all the liquid LQ in the predetermined space K2 including the optical path space K1 has been collected.
- the control device CONT collects all the liquid LQ in the optical path space K1, and even when there is no liquid LQ in the optical path space K1 (predetermined space K2), the control device CONT collects the liquid LQ via the second supply pipe 15 from the liquid supply device 11.
- the control device CONT collects the liquid LQ via the second supply pipe 15 from the liquid supply device 11.
- the liquid LQ is constantly supplied from the liquid supply device 11 via the second supply pipe 15 to the recovery flow path 24 (nozzle member 70).
- the liquid LQ When the liquid LQ is filled in the predetermined space K2 including the optical path space K1, the force for adjusting the temperature of the nozzle member 70 by the liquid LQ As described above, the optical path space K1 (predetermined space K2)
- the temperature of the nozzle member 70 may decrease due to the heat of vaporization generated by the vaporization of the liquid LQ in contact with the nozzle member 70.
- the lower surface of the nozzle member 70 and the porous member 25 are lyophilic, there is a high possibility that the liquid LQ will remain in the nozzle member 70. Also, if the liquid LQ supply and collection operations by the liquid immersion mechanism 1 are stopped, there is a high possibility that the liquid LQ will remain inside the supply channel 14 and the recovery channel 24.
- the nozzle member 70 is cooled by the heat of vaporization.
- the temperature of the nozzle member 70 decreases, when the supply operation of the liquid LQ to the optical path space K1 from the supply port 12 is resumed, the temperature of the supplied liquid LQ becomes lower than the desired temperature, and the exposure light that passes through the liquid LQ
- the EL optical path may fluctuate, or the substrate P in contact with the liquid LQ may be thermally deformed, which may degrade the exposure accuracy via the liquid LQ.
- various members arranged in the vicinity of the nozzle member 70 for example, the final optical element LSI may be cooled, and desired imaging characteristics may not be obtained.
- the environment (temperature) in which the exposure apparatus EX is placed changes, the measurement accuracy of an optical measurement apparatus such as a laser interferometer deteriorates, or the support member (exposure apparatus) that supports the projection optical system PL.
- an optical measurement apparatus such as a laser interferometer
- the support member exposure apparatus
- the body of EX will be affected by heat deformation of the body of EX).
- the control device CONT supplies the liquid LQ to the recovery flow path 24 of the nozzle member 70 via the second supply pipe 15 of the temperature adjustment mechanism 60 even when there is no liquid LQ in the optical path space K1.
- the temperature change (decrease) of the nozzle member 70 is suppressed.
- the liquid recovery device 21 maintains the negative pressure state of the recovery flow path 24 so as to satisfy the above equation (1). Therefore, the liquid LQ supplied from the liquid supply device 11 to the recovery flow path 24 via the second supply pipe 15 does not drop from the porous member 25 into the predetermined space K2 on the lower side. To be recovered.
- the temperature adjustment liquid LQ continues to flow through the nozzle member 70, so that the temperature change (temperature decrease) of the nozzle member 70 can be suppressed. it can.
- the control unit CONT removes the liquid LQ from the optical path space K1, and then the unit of the liquid LQ supplied from the liquid supply unit 11 to the recovery channel 24.
- the amount per unit time F3 is set larger than the amount per unit time (second amount) F2 of the liquid LQ supplied from the liquid supply device 11 to the recovery channel 24 during exposure of the substrate P or the like.
- the control device CONT supplies the liquid LQ from the liquid supply device 11 to the recovery flow path 24 after removing the liquid LQ from the optical path space K1.
- the third amount F3 is the second amount F2 when the liquid LQ is supplied from the liquid supply device 11 to the recovery flow path 24 during exposure of the substrate P, etc., and the optical path space K1 from the supply port 12
- the liquid recovery device 21 satisfies the above-described expression (1) without changing the suction force W1 of the liquid recovery device 21 greatly between the state where the liquid LQ is present in the optical path space K1 and the state where there is no liquid LQ.
- the negative pressure state of the recovery flow path 24 can be maintained.
- the control device CONT drives the valve mechanism 13B. Then, the flow path of the first supply pipe 13 is opened, and the supply of the liquid LQ to the optical path space K1 from the supply port 12 is started.
- the liquid LQ is supplied to the optical path space K1 from the supply port 12 in the first amount F1.
- the control device CONT controls the flow controller 16 and the second supply pipe. Through 15, the liquid LQ is supplied to the recovery channel 24 in the second amount F2.
- the temperature adjusting mechanism 60 for suppressing the temperature change of the nozzle member 70 is provided, it is possible to prevent the exposure accuracy from being deteriorated due to the temperature change of the nozzle member 70.
- the temperature adjustment mechanism 60 removes the liquid LQ in the optical path space K1 in order to adjust the temperature of the nozzle member 70 even when there is no liquid LQ. Since the liquid is continuously supplied to the path 24, the temperature drop of the nozzle member 70 due to the heat of vaporization of the liquid LQ can be suppressed after the liquid LQ in the optical path space K1 is removed.
- the force that changes the adjustment amount (control amount) of the temperature adjustment device 18 The force is also sent from the temperature adjustment device 18 by changing the adjustment amount of the temperature adjustment device 18 It takes some time for the temperature of the liquid LQ to reach the desired temperature (stabilize), so it may be necessary to provide a waiting time until the temperature of the liquid LQ stabilizes.
- the liquid supply device 11 including the temperature control device 18 is always driven even if the liquid LQ is present in the optical path space K1, so that the exposure apparatus EX The operating rate can be improved. That is, when the operation of the liquid supply device 11 is temporarily stopped and then resumed, a waiting time is set until the liquid LQ state (temperature, cleanliness, etc.) delivered from the liquid supply device 11 is stabilized. Force that may be necessary By continuing to drive the liquid supply device 11, for example, when the operation of supplying the liquid LQ to the optical path space K1 without the liquid LQ is resumed, There is no need to set a waiting time as described above.
- the third amount F3 of the liquid LQ supplied from the liquid supply device 11 to the recovery flow path 24 is supplied from the liquid supply device 11 during the exposure of the substrate P.
- the temperature L can be heated by the temperature controller 18 or the temperature controller 17 if there is no liquid LQ in the optical path space K1. Since a large amount of the liquid LQ that has been adjusted is supplied to the nozzle member 70, the temperature change of the nozzle member 70 can be effectively suppressed.
- the third amount F3 of the liquid LQ supplied from the liquid supply device 11 to the recovery flow path 24 is supplied from the liquid supply device 11 during the exposure of the substrate P. Since the first amount F1 of the liquid LQ supplied to the recovery flow path 24 and the second amount F2 of the liquid LQ supplied to the optical path space K1 from the supply port 12 are made substantially equal to each other.
- the suction force W1 of the liquid recovery device 21 does not need to be changed significantly before and after the liquid LQ in the optical path space K1 is removed.
- the suction force W1 of the liquid recovery device 21 is changed, there is a possibility that inconvenience may occur such as a waiting time until the operation of the liquid recovery device 21 is stabilized. Since the suction force W1 of the apparatus 21 does not need to be changed significantly, it is possible to suppress a reduction in the operating rate of the exposure apparatus EX.
- the third amount F3 is substantially equal to the sum of the first amount F1 and the second amount F2, thereby reducing the suction force W1 of the liquid recovery device 21 to the optical path.
- the supply amount of the liquid LQ is not limited to this.
- the liquid LQ is supplied from the supply port 12 to the optical path space K1 with the first amount F1.
- the second amount F2 of the liquid LQ supplied from the liquid supply device 11 to the recovery flow path 24 via the second supply pipe 15 is substantially equal to the first amount F1. May be equal.
- the amount of the liquid LQ flowing into the recovery channel 24 can be set to the first amount F1, whether or not the liquid LQ is present in the optical path space K1.
- the first amount F 1 when the liquid LQ is supplied from the supply port 12 to the optical path space K 1 exposes the substrate P.
- board P It may be necessary to adjust depending on the moving conditions including moving speed, etc., and the substrate conditions including the contact angle condition with the liquid LQ of the film forming the surface of Z or substrate P.
- the recovery force (suction force) W1 of the liquid recovery device 21 is not changed in the recovery flow path 24 so that the nozzle member 70 Since the third amount F3 of liquid LQ supplied for temperature adjustment needs to be reduced according to the first amount F1, the temperature change (temperature drop) of the liquid LQ may not be sufficiently suppressed. . Therefore, as in the above-described embodiment, even when the liquid LQ is present in the optical path space K1, the liquid LQ for adjusting the temperature of the nozzle member 70 is continuously supplied from the liquid supply device 11 to the recovery flow path 24. As a result, even if the first amount F1 is small, increasing the second amount F2 increases the third amount F3 sufficiently while keeping the recovery power W1 of the liquid recovery device 21 almost constant. can do.
- the supply amount (F1 to F3) of the liquid LQ is adjusted so as to satisfy the above equation (1) without greatly changing the suction force W1 of the liquid recovery device 21.
- the suction force W1 of the liquid recovery device 21 may be adjusted, or both the suction force W1 of the liquid recovery device 21 and the supply amount (F1 to F3) of the liquid LQ may be adjusted.
- the liquid LQ supplied from the supply port 12 to the optical path space K1 and the liquid LQ supplied from the second supply pipe 15 to the recovery flow path 24 are the same. Therefore, when the liquid LQ is supplied from the supply port 12, the temperature controller 17 provided in the second supply pipe 15 is not necessarily driven. By the device 18, the temperature of the liquid LQ supplied from the supply port 12 to the optical path space K1 and the temperature of the liquid LQ supplied from the second supply pipe 15 to the recovery channel 24 can be made substantially the same.
- the temperature controller 17 is used to send out the liquid LQ sent from the liquid supply device 11 including the temperature adjustment device 18 and supplied to the recovery flow path 24 of the nozzle member 70. The temperature may be further adjusted. Further, the temperature controller 17 may be omitted.
- the temperature adjustment mechanism 60 is configured so that when there is no liquid LQ in the optical path space K1, the temperature of the liquid LQ supplied to the recovery flow path 24 for adjusting the temperature of the nozzle member 70 is supplied from the supply port 12 to the optical path.
- the temperature may be higher than the temperature of the liquid LQ supplied to the space K1.
- the nozzle member 70 (recovery flow path 24) is not By supplying the liquid LQ having a relatively high temperature, the temperature change of the nozzle member 70 can be further suppressed.
- the temperature of the liquid LQ supplied to the nozzle member 70 (recovery flow path 24) via the second supply pipe 15 is increased by using the temperature controller 17 that does not change the control amount of the temperature control device 18. be able to.
- the liquid LQ whose temperature has been adjusted by the temperature adjustment device 18 can be immediately supplied to the optical path space K1.
- the liquid LQ supplied to the recovery flow path 24 for adjusting the temperature of the nozzle member 70 and the liquid LQ supplied from the supply port 12 to the optical path space K1 are different types. May be.
- the liquid LQ supplied from the supply port 12 to the optical path space K1 is pure water.
- Specific heat is larger than pure water!
- the liquid supply device 11 supplies the liquid LQ to the optical path space K1 via the supply port 12, and supplies the liquid LQ to the recovery flow path 24 via the second supply pipe 15. (The space on the upper surface side of the porous member 25), and the liquid immersion mechanism 1 and the temperature adjustment mechanism 60 are configured so that the liquid supply device 11 is also used as shown in FIG.
- the second liquid supply device 11 ′ uses the temperature controller 17 to change the temperature of the liquid LQ for adjusting the temperature of the nozzle member 70 to the temperature of the liquid LQ supplied from the supply port 12 to the optical path space K1.
- the temperature may be higher than the temperature of the liquid LQ supplied to the optical path space K1.
- the nozzle member 70 facing the substrate P Of the lower surface the force that allows the temperature control liquid LQ to flow through the recovery flow path 24 on the upper surface side of the recovery port 22 (porous member 25). It is desirable to flow the temperature-controlling liquid LQ into the other space inside the chamber to reduce / prevent the influence of vaporization of the liquid LQ on the lower surface of the nozzle member 70.
- the nozzle member 70 is connected to the supply channel 14 connected to the supply port 12 for supplying the liquid LQ to the optical path space K1, and to the recovery port 22 for recovering the liquid LQ in the optical path space K1.
- an internal flow path 61 is provided in each of the inclined plate portion 72, the side plate portion 73, and the top plate portion 75 of the nozzle member 70.
- the internal flow path 61 may be formed in an annular shape inside the nozzle member 70 so as to surround the optical path space K1, for example, or may be formed in a spiral shape.
- An introduction port connected to the second supply pipe 15 is provided in a part of the internal flow path 61, and the liquid supply device 11 constituting the temperature adjustment mechanism 60 passes through the second supply pipe 15 and the introduction port.
- a discharge port for discharging the liquid LQ flowing through the internal flow path 61 is provided in the other part of the internal flow path 61. Then, the temperature adjustment mechanism 60 supplies the liquid LQ from the introduction port to the internal flow path 61 and discharges the liquid LQ from the discharge port, so that the temperature adjustment liquid LQ continues to flow through the internal flow path 61. be able to.
- the control device CONT supplies the liquid LQ to the internal flow path 61 after the liquid LQ in the optical path space K1 is removed. Further, the control device CONT supplies the liquid LQ to the internal flow path 61 even when the liquid LQ is present in the optical path space K1. Further, the control device CONT can adjust the temperature of the liquid LQ supplied to the internal flow path 61 using the temperature controller 17 provided in the middle of the second supply pipe 15. The controller CONT uses the temperature controller 17 to make the temperature of the liquid LQ supplied to the internal flow path 61 almost the same as the temperature of the liquid LQ supplied from the supply port 12 to the optical path space K1. Even with the above configuration, the temperature change of the nozzle member 70 is suppressed. ff3 ⁇ 4 can be.
- the control device CONT supplies the liquid LQ to the internal flow path 61, so that the liquid LQ is in the optical path space K1. Stop the supply of liquid LQ to the internal flow path 61.
- control device CONT uses the temperature controller 17 provided in the middle of the second supply pipe 15 to change the temperature of the liquid LQ supplied to the internal flow path 61.
- the temperature of the liquid LQ supplied from the supply port 12 to the optical path space K1 may be higher.
- the liquid supply device that supplies the liquid LQ to the supply port 12 and the liquid supply device that supplies the liquid LQ to the internal flow path 61 are separately provided. May be provided.
- the liquid LQ supplied from the supply port 12 to the optical path space K1 and the liquid LQ supplied to the internal flow path 61 may be different types. Further, in order to adjust the temperature of the nozzle member 70, gas may be supplied to the internal flow path 61 !,
- the temperature adjustment mechanism 60 has a jacket member 62 that faces the wall surface of the nozzle member 70 and through which the liquid LQ for adjusting the temperature of the nozzle member 70 flows.
- the jacket member 62 is a tubular member having an internal flow path, and is provided so as to be wound around the side plate portion 73 of the nozzle member 70.
- the jacket member 62 and the nozzle member 70 are in contact with each other. ! /
- a part of the jacket member 62 is provided with an introduction port connected to the second supply pipe 15, and the other part is provided with a discharge port for discharging the liquid LQ inside the jacket member 62.
- the liquid supply device 11 supplies the liquid LQ to the jacket member 62 through the second supply pipe 15 and the introduction port.
- the controller CONT supplies the liquid LQ to the jacket member 62 after the liquid LQ in the optical path space K1 is removed.
- control device CONT always supplies the liquid LQ to the jacket member 62 even when the liquid LQ is present in the optical path space K1. To do. Further, the control device CONT can adjust the temperature of the liquid LQ supplied to the jacket member 62 by using a temperature controller 17 provided in the middle of the second supply pipe 15. The controller CONT uses the temperature controller 17 to make the temperature of the liquid LQ supplied to the jacket member 62 and the temperature of the liquid LQ supplied from the supply port 12 to the optical path space K1 substantially the same. Even with the above configuration, the temperature change of the nozzle member 70 can be suppressed.
- the control device CONT supplies the liquid LQ to the jacket member 62, and the liquid LQ is in the optical path space K1.
- the liquid LQ supply to the jacket member 62 may be stopped.
- control device CONT supplies the temperature of the liquid LQ supplied to the jacket member 62 using the temperature controller 17 provided in the middle of the second supply pipe 15.
- the temperature may be higher than the temperature of the liquid LQ supplied from the opening 12 to the optical path space K1.
- a liquid supply device that supplies the liquid LQ to the supply port 12 and a liquid supply device that supplies the liquid LQ to the jacket member 62 are separately provided. Okay.
- the liquid LQ supplied to the optical path space K1 from the supply port 12 and the liquid LQ supplied to the jacket member 62 may be of different types.
- gas may be supplied to the jacket member 62 in order to adjust the temperature of the nozzle member 70.
- the temperature adjustment mechanism 60 has a heater 63 attached to the nozzle member 70.
- the heater 63 is in contact with the side plate portion 73 of the nozzle member 70.
- the controller CONT suppresses the temperature change of the nozzle member 70 using the heater 63 after the liquid LQ in the optical path space K1 is removed.
- the control device CONT uses the heater 63 to warm the nozzle member 70, thereby The temperature drop of the steel member 70 can be suppressed.
- the control device CONT can adjust the temperature of the nozzle member 70 using the heater 63 even when the liquid LQ is present in the optical path space K1. Even with the above configuration, the temperature change of the nozzle member 70 can be suppressed.
- the control device CONT adjusts the temperature of the nozzle member 70 using the heater 63, and the liquid LQ in the optical path space K1. Therefore, the temperature of the nozzle member 70 may not be adjusted by the heater 63 in a state where there is a gap.
- the temperature adjustment mechanism 60 has a radiating portion 64 that radiates heat toward the nozzle member 70.
- the radiating section 64 is provided on the measurement stage ST2.
- the radiating portion 64 is provided on the upper surface 59 that can face the nozzle member 70 in the measurement stage ST2.
- the radiating section 64 is configured by, for example, a far-infrared ceramic heater or the like.
- the nozzle member 70 can be warmed by the heat radiated from the radiating portion 64. Therefore, the nozzle member is caused by the heat of vaporization caused by the vaporization of the liquid LQ. Even when the temperature of 70 is remarkably lowered, the temperature reduction of the nozzle member 70 can be suppressed by heating the nozzle member 70 using the radiating portion 64. Even with the above-described configuration, the temperature change of the nozzle member 70 can be suppressed.
- the radiation section 64 may be provided on the substrate stage ST1, or may be provided on a predetermined support mechanism (including a movable body) other than the substrate stage ST1 and the measurement stage ST2.
- the nozzle member 70 has both the supply port 12 and the recovery port 22.
- the form of the nozzle member 70 is not limited to that described above, and the supply port When the temperature change of the nozzle member having either one of the recovery ports and the recovery port is suppressed, the temperature adjustment mechanism of each of the above-described embodiments can be used.
- the optical path space K1 is filled with the liquid LQ, and the immersion space is filled.
- the immersion space forming member forming (K2) is a part of the immersion mechanism 1, that is, the nozzle member 70, but is not limited thereto, and may include, for example, a member other than the nozzle member 70. Alternatively, it may include only at least one of the supply port and the recovery port. Furthermore, in the first to sixth embodiments described above, the formation of the immersion space is canceled by removing all the liquid LQ from the optical path space K1 (total recovery).
- the formation of the liquid immersion space may be canceled.
- the formation of the immersion space may be canceled when the temperature change of the immersion space forming member (such as the nozzle member 70) exceeds a predetermined allowable range by removing at least a part of the liquid LQ.
- the temperature adjustment mechanism 60 described in each of the first to sixth embodiments may be used in appropriate combination.
- the temperature-adjusted liquid LQ is supplied to the recovery flow path 24 of the nozzle member 70, and the internal flow path 61 is supplied to the nozzle member 70 as described in the third embodiment.
- a temperature adjusting fluid liquid, gas
- the jacket member 62 as described in the fourth embodiment may be attached to the nozzle member 70, or the heater 63 as described in the fifth embodiment may be attached.
- the nozzle member 70 may be warmed using the heat dissipating section 64 as described in the sixth embodiment!
- the liquid LQ is vaporized when the liquid LQ is removed from the image plane side (the lower surface side of the nozzle member 70) of the projection optical system PL. Reducing the temperature change of the nozzle member 70 The force that mainly describes the prevention Even if the liquid LQ is held on the lower surface side of the nozzle member 70, a part of the lower surface of the nozzle member 70 After contact with the liquid LQ in the immersion area LR, a change in the interface position of the immersion area LR may result in a state where it does not come into contact with the liquid LQ.
- the temperature of the nozzle member 70 is adjusted and the temperature is adjusted.
- the change is suppressed, like the nozzle member 70, the temperature of at least the final optical element LSI of the projection optical system PL changes due to the heat of vaporization of the liquid LQ as the immersion space is released.
- the optical characteristics of the final optical element LSI may be changed or damaged due to the temperature fluctuation.
- a temperature adjusting fluid irradiation with infrared rays, or a temperature adjusting element (such as a Peltier element)
- a temperature adjusting element such as a Peltier element
- the liquid LQ in each of the above embodiments is composed of pure water.
- Pure water has the advantage that it can be easily obtained in large quantities at semiconductor manufacturing factories and the like, and has no adverse effects on the photoresist on the substrate P and optical elements (lenses).
- pure water has no adverse effects on the environment and the content of impurities is extremely low. Therefore, it is expected to clean the surface of the substrate P and the surface of the optical element provided on the front end surface of the projection optical system PL. it can.
- the exposure system 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 approximately 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
- the wavelength is shortened to about 134 nm to obtain a high resolution.
- the projection optical system PL can be used if it is sufficient to ensure the same depth of focus as in the air.
- the numerical aperture can be increased further, and the resolution is improved in this respect as well.
- the optical element LSI is attached to the tip of the projection optical system PL, and the optical characteristics of the projection optical system PL, for example, aberration (spherical aberration, coma aberration, etc.) are adjusted by this lens. It can be carried out.
- the optical element attached to the tip of the projection optical system PL may be an optical plate used for adjusting the optical characteristics of the projection optical system PL. Or it may be a plane parallel plate (such as a cover plate) that can transmit the exposure light EL.
- the structure of the liquid immersion mechanism 1 including the nozzle member 70 is not limited to the above-described structure, for example, It is described in European Patent Publication No. 1420298, International Publication No. 2004Z055803, International Publication No. 2004Z057590, International Publication No. 2005/029559, and can be used later.
- the space between the projection optical system PL and the surface of the substrate P is filled with the liquid LQ.
- the liquid LQ may be filled at least between the surface.
- the space between the projection optical system PL and the surface of the substrate P is filled with the liquid LQ.
- the liquid LQ For example, in a state where a cover glass having parallel plane plate force is attached to the surface of the substrate P. May fill liquid LQ.
- the projection optical system of the above-described embodiment is disclosed in International Publication No. 2004Z019128 pamphlet that fills the optical path space on the image plane side of the optical element (LSI) at the tip with a liquid!
- a projection optical system in which the optical path space on the object plane side of the optical element at the tip is also filled with liquid can be employed.
- the temperature change of the nozzle member may be suppressed.
- the liquid LQ in each of the above embodiments is water (pure water), but may be a liquid other than water.
- the light source of the exposure light EL is an F laser
- the F laser Light penetrates water
- PFPE PFPE
- fluorinated fluid such as fluorinated oil
- lyophilic treatment is performed by forming a thin film with a substance having a small molecular structure including fluorine, for example, in a portion in contact with the liquid LQ.
- the liquid LQ is stable to the projection optical system PL that is transparent to the exposure light EL and has a refractive index as high as possible, and a photoresist that is applied to the surface of the substrate P (for example, Cedar). Oil) can also be used.
- the liquid LQ may have a refractive index of about 1.6 to 1.8.
- the optical element LSI may be formed of a material having a refractive index higher than that of quartz or fluorite and having a material (eg, 1.6 or more).
- various liquids such as a supercritical fluid can be used.
- the liquid LQ having the same temperature as that of the substrate P is supplied.
- the liquid immersion region LR may be formed. As a result, thermal deformation of the substrate P due to a temperature difference from the liquid LQ can be prevented.
- the position information of the mask stage MST, the substrate stage ST1, and the measurement stage ST2 is measured using the interferometer system (52, 54, 56).
- the present invention is not limited to this.
- the interferometer system and the encoder system may be switched and used, or both of them may be used to control the position of the stage.
- the substrate P in each of the above embodiments is used not only for semiconductor wafers for manufacturing semiconductor devices but also for glass substrates for display devices, ceramic wafers for thin film magnetic heads, or exposure apparatuses.
- Mask or reticle master synthetic quartz, silicon wafer, etc. are applied.
- the exposure apparatus EX in addition to the step-and-scan type scanning exposure apparatus (scanning stepper) that scans and exposes the mask M pattern by moving the mask M and the substrate P synchronously, the mask
- the present invention can also be applied to a step-and-repeat projection exposure apparatus (steno) in which the pattern of the mask M is collectively exposed while M and the substrate P are stationary, and the substrate P is sequentially moved stepwise.
- steno step-and-repeat projection exposure apparatus
- a reduced image of the first pattern is projected with the first pattern and the substrate P substantially stationary (for example, a refractive type including a reflective element at a 1Z8 reduction magnification). It can also be applied to an exposure apparatus that uses a projection optical system) to perform batch exposure on the substrate P. In this case, after that, with the second pattern and the substrate P almost stationary, a reduced image of the second pattern is collectively exposed on the substrate P by partially overlapping the first pattern using the projection optical system. It can also be applied to a stitch type batch exposure apparatus. In addition, the stitch type exposure apparatus can also be applied to a step 'and' stitch type exposure apparatus in which at least two patterns are partially overlapped and transferred on the substrate P, and the substrate P is sequentially moved.
- an exposure apparatus provided with the projection optical system PL will be 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 through an optical member such as a mask or a lens, and an immersion region is formed in a predetermined space between the optical member and the substrate.
- the present invention relates to JP-A-10-163099 and JP-A-10-214783 (corresponding US Pat. No. 6,590,634), JP-T 2000-505958 (corresponding US Pat. No. 5). , 969, 441) / US Patent No. 6, 208, 407 etc. [Disclosed! Applicable to twin stage type exposure apparatus with multiple substrate stages as described above] .
- the present invention can also be applied to an exposure apparatus that does not include a measurement stage, as disclosed in WO99 / 49504.
- the present invention can also be applied to an exposure apparatus provided with a plurality of substrate stages and measurement stages.
- an exposure apparatus that locally fills the liquid between the projection optical system PL and the substrate ridge 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 type of the exposure apparatus EX is not limited to an exposure apparatus for manufacturing a semiconductor element that exposes a semiconductor element pattern onto the substrate P.
- JP 2004-519850 A corresponding US Pat. No. 6,611,316
- two mask patterns are combined on the substrate via the projection optical system.
- the present invention can also be applied to an exposure apparatus that performs double exposure of one shot area on the substrate almost simultaneously by one scan exposure.
- the exposure apparatus EX has various mechanical subsystems including the respective constituent elements recited in the claims of the present application with predetermined mechanical accuracy, electrical accuracy, and optical accuracy. Manufactured by assembling to keep. In order to ensure these various accuracies, before and after the assembly, various optical systems are adjusted to achieve optical accuracy, various mechanical systems are adjusted to achieve mechanical accuracy, various electrical systems Is adjusted to achieve electrical accuracy.
- the assembly process from various subsystems to the exposure system includes mechanical connections, electrical circuit wiring connections, and pneumatic circuit piping connections between the various subsystems. Needless to say, there is an assembly process for each subsystem before the assembly process from the various subsystems to the exposure apparatus. When the assembly process of the various subsystems to the exposure apparatus is completed, comprehensive adjustment is performed to ensure various accuracies for the entire exposure apparatus. It is desirable to manufacture the exposure apparatus in a clean room in which the temperature and cleanliness are controlled.
- a microdevice such as a semiconductor device includes a step 201 for performing a function / performance design of the microdevice, a step 202 for manufacturing a mask (reticle) based on the design step, Step 203 of manufacturing a substrate as a base material, a step of exposing the mask pattern to the substrate by the exposure apparatus EX of the above-described embodiment, a step of developing the exposed substrate, a heating (curing) of the developed substrate, and an etching step Step 204 including substrate processing process such as device assembly step (dicing process, bond Manufacturing process, including inching process, knocking process, etc.) 205, inspection step 206, etc.
- substrate processing process such as device assembly step (dicing process, bond Manufacturing process, including inching process, knocking process, etc.)
- the present invention relates to an exposure apparatus for producing a wide range of products such as semiconductor elements, liquid crystal display elements or displays, thin film magnetic heads, CCDs, micromachines, MEMS, DNA chips, reticles (masks), and the like. Very useful for the method.
Abstract
Description
Claims
Priority Applications (5)
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JP2007528138A JP4872916B2 (ja) | 2005-04-18 | 2006-04-17 | 露光装置及び露光方法、並びにデバイス製造方法 |
US11/887,584 US8089608B2 (en) | 2005-04-18 | 2006-04-17 | Exposure apparatus, exposure method, and device manufacturing method |
KR1020077003842A KR101555707B1 (ko) | 2005-04-18 | 2006-04-17 | 노광 장치 및 노광 방법, 그리고 디바이스 제조 방법 |
EP06731969A EP1873816A4 (en) | 2005-04-18 | 2006-04-17 | EXPOSURE DEVICE, EXPOSURE METHOD AND COMPONENTS MANUFACTURING METHOD |
US13/299,891 US8724077B2 (en) | 2005-04-18 | 2011-11-18 | Exposure apparatus, exposure method, and device manufacturing method |
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JP2005120185 | 2005-04-18 | ||
JP2005-120185 | 2005-04-18 |
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US11/887,584 A-371-Of-International US8089608B2 (en) | 2005-04-18 | 2006-04-17 | Exposure apparatus, exposure method, and device manufacturing method |
US13/299,891 Continuation US8724077B2 (en) | 2005-04-18 | 2011-11-18 | Exposure apparatus, exposure method, and device manufacturing method |
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WO2006112436A1 true WO2006112436A1 (ja) | 2006-10-26 |
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US (2) | US8089608B2 (ja) |
EP (1) | EP1873816A4 (ja) |
JP (1) | JP4872916B2 (ja) |
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WO (1) | WO2006112436A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
US8724077B2 (en) | 2014-05-13 |
US8089608B2 (en) | 2012-01-03 |
JP4872916B2 (ja) | 2012-02-08 |
US20090115977A1 (en) | 2009-05-07 |
JPWO2006112436A1 (ja) | 2008-12-11 |
US20120062861A1 (en) | 2012-03-15 |
KR20070115861A (ko) | 2007-12-06 |
EP1873816A4 (en) | 2010-11-24 |
EP1873816A1 (en) | 2008-01-02 |
KR101555707B1 (ko) | 2015-09-25 |
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