WO2001045145A1 - Procede et dispositif d'exposition - Google Patents
Procede et dispositif d'exposition Download PDFInfo
- Publication number
- WO2001045145A1 WO2001045145A1 PCT/JP2000/008449 JP0008449W WO0145145A1 WO 2001045145 A1 WO2001045145 A1 WO 2001045145A1 JP 0008449 W JP0008449 W JP 0008449W WO 0145145 A1 WO0145145 A1 WO 0145145A1
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- WO
- WIPO (PCT)
- Prior art keywords
- base member
- exposure
- stage
- movable
- exposure apparatus
- Prior art date
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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
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70691—Handling of masks or workpieces
- G03F7/70733—Handling masks and workpieces, e.g. exchange of workpiece or mask, transport of workpiece or mask
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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
- G03F7/70358—Scanning exposure, i.e. relative movement of patterned beam and workpiece during imaging
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70691—Handling of masks or workpieces
- G03F7/70716—Stages
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/708—Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
- G03F7/70808—Construction details, e.g. housing, load-lock, seals or windows for passing light in or out of apparatus
- G03F7/70816—Bearings
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/708—Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
- G03F7/70808—Construction details, e.g. housing, load-lock, seals or windows for passing light in or out of apparatus
- G03F7/70825—Mounting of individual elements, e.g. mounts, holders or supports
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/708—Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
- G03F7/70808—Construction details, e.g. housing, load-lock, seals or windows for passing light in or out of apparatus
- G03F7/70833—Mounting of optical systems, e.g. mounting of illumination system, projection system or stage systems on base-plate or ground
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/708—Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
- G03F7/70858—Environment aspects, e.g. pressure of beam-path gas, temperature
- G03F7/709—Vibration, e.g. vibration detection, compensation, suppression or isolation
Definitions
- the present invention relates to an exposure method and apparatus used for transferring a mask pattern onto a substrate in a lithographic process for manufacturing a semiconductor device, a liquid crystal display device, a plasma display device, a thin film magnetic head, or the like, for example.
- the present invention relates to an exposure apparatus in which anti-vibration measures are taken.
- a reticle stage for mounting and positioning a reticle as a mask, and a wafer stage for mounting a wafer as a substrate and two-dimensionally moving the wafer, respectively have high-precision positioning or high-precision.
- a configuration is adopted that enables efficient scanning.
- a frame-shaped coarse moving stage that moves at a substantially constant speed in a scanning direction is mounted on a reticle base, and the coarse moving stage is placed in the coarse moving stage. It was configured by connecting a fine movement stage on which a reticle is mounted via an actuator for positioning two-dimensionally by a very small amount. In this configuration, the coarse movement stage and the fine movement stage are slidably mounted on a common reticle base via air bearings.
- a drive such as a linear camera for driving a movable stage on which the reticle is mounted was mounted on the reticle stage.
- a so-called double wafer stage having two movable stages has been proposed in recent years in order to increase throughput.
- this double wafer stage while exposing the wafer on the first movable stage, the exchange alignment of the wafer on the second movable stage can improve throughput. it can.
- one of the two orthogonal drive shafts is shared by two movable stages, or a planar motor is used. The two movable stages were driven independently.
- the conventional exposure apparatus was assembled on a surface plate installed through a plurality of (for example, four) vibration isolation tables including an air damper to reduce the influence of vibration from the floor.
- a plurality of (for example, four) vibration isolation tables including an air damper to reduce the influence of vibration from the floor.
- the excimer laser light source was used as the exposure light source
- some members in the exposure light source and the illumination optical system were supported by a support member different from the base.
- the wafer base that supports the wafer stage and the reticle base that supports the reticle stage are independent from each other so that the vibration generated at each stage of the exposure apparatus does not affect other stages.
- a method has been proposed in which each of them is supported by a plurality of active vibration dampers including an air damper and an electromagnetic damper.
- the surface plate is placed on the floor via a plurality of
- Exposure accuracy transfer fidelity such as line width accuracy, overlay accuracy, etc.
- active vibration isolators including an air damper and an electromagnetic vibration damper, for example, from the floor via an air damper. Because low-frequency vibrations are easily transmitted to both stages independently, there is a possibility that low-frequency displacement may occur between both stages.
- a coarse moving stage or a driving mechanism for driving a movable stage (a fine moving stage or the like) is mounted on a reticle base.
- the generated vibration is likely to be transmitted to the movable stage (reticle).
- the drive speed of the movable stage is increased to increase the throughput, there is a risk that the positioning accuracy of the reticle or the accuracy of the scanning speed may decrease. there were.
- the throughput cannot be increased much.
- the present invention provides an exposure method and apparatus which includes a reticle stage capable of controlling a movable stage at high speed and with high accuracy without increasing the load on a reticle base, and in which the influence of vibration on the driving mechanism side is reduced. Is the second purpose. It is another object of the present invention to provide a manufacturing method capable of efficiently manufacturing such an exposure apparatus, and a device manufacturing method capable of manufacturing a high-precision device using the exposure method. Disclosure of the invention
- a first exposure method is directed to an exposure method for exposing a second object (W 1) through a pattern of a first object (R 1) with an exposure beam, comprising: a base member (62); A movable stage (63) movably disposed on the first member and on which the first object is mounted, and driving the movable stage in a predetermined direction without contacting the base member. Things.
- vibrations when driving the movable stage are not transmitted to the movable stage and, consequently, the first object, and high exposure accuracy can be obtained.
- guide members (71A, 71B) are arranged above the base member, and the movable stage is moved along the guide members while substantially satisfying the law of conservation of momentum. It is desirable to drive in the predetermined direction. By satisfying the law of conservation of momentum in this way, the generation of vibration can be suppressed.
- the first exposure apparatus is an exposure apparatus for exposing a second object (W 1) through a pattern of a first object (R 1) with an exposure beam.
- a movable stage (63) movably disposed on the base member and carrying the first object; and a coarse movement for driving the movable stage in a predetermined direction without contacting the base member.
- a stage (64) is an exposure apparatus for exposing a second object (W 1) through a pattern of a first object (R 1) with an exposure beam.
- a movable stage (63) movably disposed on the base member and carrying the first object; and a coarse movement for driving the movable stage in a predetermined direction without contacting the base member.
- a stage (64) movably disposed on the base member and carrying the first object.
- the movable stage is movably mounted on the base member by, for example, an air bearing method. And that The moving stage is driven at high speed and high precision by the coarse moving stage, and the coarse moving stage is not in contact with the base member. Therefore, the vibration generated on the side of the drive mechanism for driving the coarse movement stage is not transmitted to the movable stage and, consequently, the first object, and high exposure accuracy can be obtained.
- the drive mechanism of the coarse movement stage (64) is, for example, a guide member (71A, 71B) arranged above the base member and a coarse movement along the guide member. And a driving device (76YA, 76YB) for driving the stage in the predetermined direction. That is, the coarse movement stage is supported so as to be suspended from above, and with this configuration, the coarse movement stage can be easily driven at high speed.
- the first object and the second object are scanned synchronously along the predetermined direction (Y direction), and the coarse movement stage is moved by the driving device.
- the guide members (71A, 71B) move in the opposite direction so as to substantially satisfy the law of conservation of momentum.
- a first measuring device for measuring the position of the coarse movement stage in the predetermined direction
- a second measuring device 8 IX, 8 1 YA, 8) for measuring the two-dimensional position of the movable stage. 1YB) and an actuary (78XA, 78XB, 78Y) for two-dimensionally finely moving the movable stage with respect to the coarse movement stage.
- the first measuring device From the difference between the measured value and the measured value of the second measuring device, the relative positional relationship between the coarse moving stage and the movable stage can be obtained, and the movable stage can be moved based on the relative positional relationship
- the c the movable stage also functions as a fine movement stage, by placing along a plurality of masks as its first object on the movable stage (R 1, R 2) to the predetermined direction, The pattern of a plurality of masks can be transferred onto the second object with a high throughput.
- the second exposure apparatus of the present invention is an exposure apparatus for exposing a second object (W 1) with an exposure beam via a first object (R 1), wherein one of the first and second objects is provided. And a first movable body (63) arranged on the first base member (62) and a second base member (66) different from the first base member, and the first movable body And a second movable body (64) used for driving the motor.
- the first exposure method of the present invention can be performed.
- the first movable body is desirably coupled to the second movable body in a non-contact manner.
- vibration when the second movable body is driven is not transmitted to the first movable body, and eventually to the first or second object.
- the first movable body has more degrees of freedom than the second movable body.
- the second movable body is roughly driven, and the first movable body can be finely moved so as to reduce the remaining error, so that control during exposure becomes easy.
- a first actuator (78 XA, 78 XB, 78 Y) for moving the first movable body relative to the second movable body; and a second base member. It is desirable to provide a second actuator (76YA, 76YB) for relatively moving the second movable body with respect to the second movable body.
- a first method of manufacturing an exposure apparatus is a method of manufacturing an exposure apparatus that exposes a second object through a pattern of a first object with an exposure beam.
- a movable stage (63) on which the first object is placed is movably arranged on the base member at the bottom side of the position where the object is arranged, and is mounted on the base member in a predetermined direction.
- a guide member (71A, 71B) is arranged along the guide, and the coarse movement stage (64) is movably moved along the guide member and faces at least a part of the movable stage.
- the movable stage and the coarse movement stage are connected. According to such a manufacturing method, the first exposure apparatus of the present invention can be efficiently assembled.
- a second exposure method is directed to an exposure method for exposing a second object ( W i) with a pattern of the first object (R 1) using an exposure beam.
- the first movable stage (6) supports the second base member (62) in a state where it can be displaced with a predetermined degree of freedom, and movably positions the first object on the second base member. 3) is mounted, and a second movable stage (14A) for movably positioning the second object is placed on the first base member, and the first and second movable stages are moved.
- the attitude of the second base member with respect to the first base member is controlled so as to suppress the accompanying vibration.
- vibration of a low frequency is hardly transmitted to the first and second movable stages independently, and the attitude of the first movable stage is relatively controlled by controlling the attitude of the second base member. Because high-frequency vibrations can be suppressed, the effects of vibrations are reduced.
- the first base member can be displaced with a predetermined degree of freedom.
- a projection system (PL) for supporting the third base member (53) and projecting the image of the pattern of the first object onto the second object is mounted on the third base member. It is desirable to further control the attitude of the third base member with respect to the first base member so as to suppress the vibration accompanying the movement of the movable stage. As a result, the projection system is also stably maintained.
- the third exposure apparatus of the present invention is an exposure apparatus for exposing a second object (wi) through a pattern of a first object (R1) with an exposure beam, wherein the plurality of vibration isolating tables (11 A , 11 B), and a plurality of first posture control members (61A to 61C) that are stretchable or displaceable on the first base member. ), And a first movable stage (63) movably disposed on the second base member to position the first object. A second movable stage (14A) movably disposed on the first base member to position the second object.
- the plurality of anti-vibration tables (11A, 11B) include active dampers including a mechanical damper such as an air damper and an electromagnetic damper.
- a vibration device can be used, and as the first attitude control member (61A to 61C), a drive element (hard mount) having a high rigidity and a high response speed, such as a piezoelectric element or a magnetostrictive element, can be used.
- a drive element hard mount having a high rigidity and a high response speed, such as a piezoelectric element or a magnetostrictive element.
- a projection system that further transfers the image of the pattern of the first object onto the second object, and a plurality of second telescopic or displaceable second elements on the first base member.
- posture control member 52A ⁇ 52C
- a third base member (53) is provided, and the projection system is installed on the third base member.
- a second method for manufacturing an exposure apparatus is a method for manufacturing an exposure apparatus that exposes a second object through a pattern of a first object using an exposure beam.
- 11B to support the first base member (12), and on the first base member, a plurality of first posture control members (60A to 60O C), the second base member (62) is placed, and a first movable stage (63) for positioning the first object is movably mounted on the second base member.
- a second movable stage (14A) for positioning the second object is movably mounted on the first base member.
- the device manufacturing method of the present invention includes a step of performing exposure using the exposure method or the exposure apparatus of the present invention. Since high exposure accuracy is obtained by the present invention, a high-performance device having excellent pattern fidelity and the like can be manufactured. ! 0 Brief description of drawings
- FIG. 1 is a schematic configuration diagram of a projection exposure apparatus according to an embodiment of the present invention, with a part thereof being cut away.
- 2A is a plan view showing the support plate 66 and the reticle stage system shown in FIG. 1
- FIG. 2B is a cross-sectional view taken along the line AA in FIG. 2A.
- FIG. 3 is a front view of a main part of the reticle stage system shown in FIG. 1, showing a state in which the support plate 66 has been moved upward from the columns 59A and 59B.
- FIG. 4 is a plan view showing fine movement stage 63 and reticle base 62 of FIG.
- FIG. 5 is a plan view showing a support plate 53 that supports the projection optical system PL of FIG.
- FIG. 6 is a block diagram showing a control system of a reticle stage system according to the embodiment.
- FIG. 7 is a diagram illustrating an example of a manufacturing process of the semiconductor device according to the embodiment. BEST MODE FOR CARRY
- the present invention is applied to a projection exposure apparatus of a scanning exposure system including a step-and-scan system.
- FIG. 1 shows the projection exposure apparatus of the present embodiment.
- most of the projection exposure apparatus of the present embodiment is installed in a clean room on a floor 1 of a semiconductor manufacturing plant, and a machine downstairs there.
- An exposure light source 3 of the projection exposure apparatus is installed on a floor 2 in a semi-clean room of the room.
- K r F wavelength 248 nm
- a r F Widelength 1 93 nm or the like of the E excimer lasers sources
- F 2 laser light source wavelength 1 57 nm
- K r 2 laser light source wavelength 146 nm
- a harmonic generator of a YAG laser a harmonic generator of a semiconductor laser, or a mercury lamp.
- Exposure light IL as an exposure beam emitted from exposure light source 3 during exposure is guided to floor 1 via beam matching unit (BMU) 4 and Exposure light IL emitted from 4 is placed on the floor 1, the beam shaping optical system, an optical integrator (uniformizer or homogenizer) for uniformizing the illuminance distribution, a light amount monitor, a variable aperture stop, And a first illumination system 5 including a relay lens system and the like.
- the exit surface of the first illumination system 5 is substantially conjugate with the pattern surface of the reticle as the object to be illuminated, and the movable field stop 6A is arranged on this exit surface.
- the movable field stop 6A opens and closes the field of view at the start and end of scanning exposure of each shot area of the wafer as the substrate to be exposed so that patterns other than the original circuit pattern are not exposed. And plays a role of selecting only a circuit pattern required for the exposure of the layer in the pattern area.
- the first illumination system 5 with the movable field stop 6 A which may cause vibration when the field of view is opened and closed, is supported separately from the exposure main unit, so that the exposure accuracy in the exposure main unit is (Overlay accuracy, transfer fidelity, etc.) are improved.
- the first lighting system 5 may be supported on the floor 1 via an active or passive vibration damping mechanism.
- the exposure light IL that has passed through the movable field stop 6A is fixed on the incident surface of the second illumination system 7 attached to the column of the exposure main body, that is, on the surface defocused by a predetermined amount from the reticle pattern surface.
- the fixed field stop 6B is provided with an opening for defining an illumination area on the reticle pattern surface as a slit-like area elongated in a non-scanning direction orthogonal to the scanning direction.
- the exposure light IL that has passed through the fixed field stop 6B passes through a relay lens system, a mirror for bending the optical path, and a condenser lens system in the second illumination system 7, and an illumination area on the pattern surface of the reticle R1 as a mask. To illuminate.
- the position of the fixed field stop 6B is not limited to the entrance surface of the second illumination system 7, and the fixed field stop 6B is connected to the exit surface of the second illumination system 7, for example.
- the reticle may be arranged on a surface separated by a predetermined amount from the pattern surface, or between the reticle and the projection optical system PL by a predetermined amount from the pattern surface.
- the image of the pattern in the illumination area of the reticle R 1 is projected through the projection optical system PL at a projection magnification of 3 (3 is 1Z4 or 1/5 times, etc.) and the photosensitive substrate ( It is projected onto a slit-like exposure area on a wafer W1 (or W2) coated with photoresist as a substrate to be exposed.
- the reticle R1 and the wafer W1 are synchronously moved in a predetermined scanning direction with the projection magnification 3 as a speed ratio, so that a pattern image of the reticle R1 is transferred to one shot area on the wafer W1. .
- the reticle R1 and the wafers Wl, W2 correspond to the first object and the second object, respectively, of the present invention, and the wafer Wl, W2 is, for example, a semiconductor (such as silicon) or SOI (silicone). on insulator).
- a semiconductor such as silicon
- SOI silicon
- the projection optical system PL for example, as disclosed in International Publication (W0) 00/39623, a plurality of refraction lenses along one optical axis, each having an aperture near the optical axis, are used.
- a straight-tube type catadioptric system constituted by disposing two concave mirrors, a straight-tube type refraction system constituted by disposing a refraction lens along one optical axis, and the like can be used.
- a catadioptric system in which the optical axis is bent in a V-shape or a catadioptric system having a double-cylinder shape may be used.
- the Z axis is taken parallel to the optical axis AX of the projection optical system PL, and runs in a plane perpendicular to the Z axis (in this example, almost coincides with the horizontal plane).
- a description will be given taking the axis.
- the entire exposure main body including the stage system supporting the reticle R1 of this example, the projection optical system PL, and the stage system supporting the wafers W1 and W2 is described. The configuration will be described.
- a rigid base plate 12 as a first base member is installed on the floor 1 via three anti-vibration tables 11 A, 11 B, and 11 C located at the vertices of a regular triangle.
- An electric level 9 A is installed on the surface plate 12.
- Each of the vibration isolating tables 11A to 11C is a mechanical damper that can withstand heavy weight such as an air damper or a hydraulic damper, and an electromagnetic damper such as a voice coil motor that consists of an electromagnetic actuator.
- It is an active vibration isolator that includes As an example, three pieces of the upper surface of the surface plate 12 detected by the electronic level 9 A with respect to the horizontal plane (the inclination angles around the two axes, that is, the X and Y axes) are within the allowable range.
- the electromagnetic dampers in the 11 A to 11 C are driven, and the air pressure or oil pressure of the mechanical dampers is controlled as necessary. In this case, the high frequency vibration from the floor is attenuated by the mechanical damper before being transmitted to the exposure main body, and the remaining low frequency vibration is attenuated by the electromagnetic damper.
- first columns 59A, 59B, 59C (59C is shown in Fig. 2 (a)) are fixed on the upper surface of the platen 12 so as to be located at the vertices of an equilateral triangle.
- a support plate 66 having an opening through which the exposure light IL passes is fixed at the center, and is supported on the support plate 66 via a spacer 67.
- the plate 68 is fixed, and the second illumination system 7 is attached to the support plate 68.
- variable mount portions 61A and 61A are fixed, and the variable mounts 61 A to 61 C are piezoelectric elements such as piezoelectric elements or magnetostrictive elements.
- a drive element that has high rigidity and a high response speed (for example, an amplitude of several / degree and a frequency of about 10 ⁇ to 1 kHz) and can be extended and contracted in the Z direction can be used.
- the variable mount section 61 A to 61 C has a small cam mechanism in the Z direction.
- a drive mechanism for performing the displacement to the position can also be used. From the viewpoint of high rigidity, the variable mounting portions 61A to 61C can also be called "hard mounts".
- a reticle base 62 as a base member (second base member) is fixed on the variable mount sections 61A to 61C, and the central portion of the reticle base 62 allows the exposure light IL to pass therethrough. Openings are formed.
- the upper surface of the reticle base 62 is machined into a guide surface with extremely good flatness, and a fine movement stage 63 as a movable stage on the reticle side is applied to this guide surface smoothly through a two-dimensional air bearing.
- the reticle R1 is slidably mounted on the fine movement stage 63, and the reticle R1 is held by vacuum suction or the like.
- Another reticle R2 (see Fig. 2 (a)) is held in the area adjacent to the reticle R1 on the fine movement stage 63 in the scanning direction so that, for example, double exposure can be performed efficiently. Is configured.
- An electric level 9D is installed at the end of the guide surface of the reticle base 62.
- the inclination angle of the guide surface detected by the level 9D with respect to the horizontal plane (two axes) That is, the inclination angles around the X axis and the Y axis) are within an allowable range, the amount of expansion and contraction (or the amount of displacement) of the three variable mounts 61A to 61C is controlled.
- the level 9D the same applies to the level below
- a detector for detecting the inclination of an optically corresponding member may be used.
- a rectangular frame-shaped coarse movement stage 64 is arranged so as to surround the fine movement stage 63 of this example, and a pair of Y axes are arranged in parallel in the Y direction on the bottom surface of the support plate 66 above it.
- the drive units 65YA and 65YB are mounted, and the coarse movement stage 64 is connected to the Y-axis drive units 65YA and 65YB.
- Coarse movement stay —
- the dice 64 is not in contact with the reticle base 62, and the coarse movement stage 64 and the fine movement stage 63 move the fine movement stage 63 with respect to the coarse movement stage 64 in the X direction within a predetermined narrow range. They are connected via an actuator that drives a small amount in the Y and rotation directions.
- the Y-axis driving devices 65 YA and 65 YB drive the coarse movement stage 64 alternately in the + Y direction and the one Y direction at a constant speed by a linear motor system. That is, while the coarse movement stage 64 is held so as to be suspended from the support plate 66, the fine movement stage 63 is driven at a constant speed in the Y direction, and the coarse movement stage is corrected so as to correct the remaining synchronization error. Fine movement stage 63 is driven relatively to stage 64.
- the two-dimensional position and rotation angle of the fine movement stage 63 and the position in the Y direction of the coarse movement stage 64 are each measured with high precision by a laser interferometer (not shown). The position and speed of 3 are controlled.
- a reticle stage system is composed of a reticle base 62, a fine movement stage 63, a coarse movement stage 64, and the like.
- the second columns 51 A, 51 B (the third column is not shown) are fixed, and three variable columns as attitude control members are provided on the upper surfaces of the second columns 51 A, 51 B, respectively.
- the mounts 52A, 52B, 52C (see Fig. 5 for 52C) are fixed, and the variable mounts 52A to 52C are the same as the variable mount 61A described above.
- a driving element using a piezoelectric element or the like, or a driving mechanism of a force type can be used.
- a support plate 53 as a base member (third base member) is fixed on the variable mount portions 52A to 52C, and a projection optical system PL is formed in a U-shaped cutout provided in the support plate 53. Is installed through the flange 54, and the open end of the notch is closed by the cover 55.
- An electric level 9 B is installed at the end of the upper surface of the support plate 53.
- the inclination angle of the upper surface with respect to the horizontal plane detected by the level 9 B (around two axes, ie, X
- the amount of expansion and contraction (or the amount of displacement) of the three variable mounts 52A to 52C is controlled such that the inclination angles around the axis and the Y axis fall within the allowable range.
- one of the three variable mounts 52A to 52C is mounted on a swivel having a fixed height. It may be one.
- rigidity is provided by a piezoelectric element such as a piezo element or a magnetostrictive element as an attitude control member at three locations at substantially equal angular intervals between the flange portion 54 holding the projection optical system PL and the support plate 53.
- the drive element 56 that can be extended and retracted in the Z direction (the direction of the optical axis AX) is mounted, and an electric level 9C is installed at the end of the upper surface of the flange 54.
- the three drive elements 56 are extended so that the inclination angle of the upper surface with respect to the horizontal plane detected by the detector 9C (the inclination angle around the two axes, that is, the inclination angles around the X axis and the Y axis) is within an allowable range.
- one of the three drive elements 56 may be a spacer with a fixed height.
- the driving element 56 for suppressing the vibration of the projection optical system PL itself is provided.
- the vibration of the cylindrical projection optical system PL is highly suppressed, and the imaging characteristics are favorably maintained.
- an imaging method using an off-axis method and a FIA (Field Image Algorithm) method is provided on the side of the lower end of the projection optical system PL in the ⁇ X direction and the + X direction.
- Alignment sensors 38 A and 38 B are fixed.
- a reticle is provided on the bottom surface of the support plate 66 above the reticle R 1 in order to align the reticle.
- a ment microscope is arranged.
- a base 18 is fixed at the center of an area substantially surrounded by three second columns 51 A and 51 B (the third column is not shown).
- the upper surface of the wafer base 13 is machined into a guide surface having extremely good flatness, and the first movable stage 14A on the wafer side is smoothly and via the air bearing on the guide surface.
- the first stage 15A is placed on the movable stage 14A, and the first stage 15A is placed on the movable stage 14A.
- One wafer W1 is held by vacuum suction or the like.
- the movable stage 14A moves continuously in the Y direction, for example, in a linear motor system, and also moves stepwise in the X and Y directions.
- the sample stage 15A moves in the X, Y, and And it can be finely moved in the rotation direction, and can be displaced in the Z direction and tilted about two axes (that is, about the X and Y axes) for repelling and focusing.
- the first movable stage 14A and the second movable stage 14B are mounted on the wafer base 13 via an air bearing and movably along the sliders 16B and 19B.
- the second wafer W2 is mounted on the movable stage 14B via a second sample stage 15B for repelling and focusing.
- the second movable stage 14B is also driven two-dimensionally by, for example, a linear motor overnight system so as not to mechanically interfere with the movable stage 14A.
- the wafer stage system of this example is composed of the wafer base 13, the movable stages 14A and 148, the sample stages 158 and 15B, and their driving mechanisms.
- the wafer stage system of this example is of a double wafer stage type.
- the movable stage 14A serving as the first wafer stage performs the scanning exposure on the wafer W1 as the second wafer stage.
- the wafer W 2 can be replaced and aligned on the movable stage 14 B side of the Therefore, a high throughput can be obtained.
- the two-dimensional position of the movable stages 14A and 14B, and the amount of jogging, pitching and rolling are measured with high precision by a laser interferometer (not shown), and the focus position of the wafer during exposure (projection)
- the position of the optical system PL in the direction of the optical axis) is measured by an autofocus sensor (not shown). Based on these measured values, the positions of the movable stages 14A and 14B, and the sample stand 15A , 15 B and the like are controlled.
- the main body of the laser interferometer on the side of the wafer is fixed to an interferometer support member 57 fixed to the bottom of the support plate 53, and the main body of the laser interferometer on the reticle side is mounted on the support plate 5.
- 3 is fixed to an interferometer support member 58 fixed to the upper surface.
- the influence of external vibration is suppressed by the variable mount sections 52 A to 52 C (see FIG. 5 for 52 C), so that the position measurement by the laser interferometer can be performed. It can be performed with high accuracy.
- FIG. 2A is a plan view showing the support plate 66 and the reticle stage system of FIG. 1, and FIG. 2B is a cross-sectional view taken along the line AA of FIG. 2A.
- the support plate 66 is composed of three first columns 59 A to 59 9 arranged at the vertices of a substantially equilateral triangle (actually, a shape close to an isosceles triangle elongated in the scanning direction (Y direction)). It is stably supported by C.
- a pair of elongated rod-shaped Y-axis guides 7 are provided on the bottom side of the support plate 66 so as to sandwich the opening provided in the support plate 66 through which the exposure light passes in the non-scanning direction (X direction).
- Both ends of one Y-axis guide 7 1 A are provided with two frame-shaped holding members 73 A, 74 A fixed to the bottom surface of the support plate 66 along the Y-axis. 2 (air pad, see Fig. 3), it is slidably supported in the Y direction almost in a non-contact state.
- Both ends of the gate 71 B are also slidably supported in the Y direction inside holding members 73 B, 74 B fixed to the bottom surface of the support plate 66.
- the slider 72A is slidable in the Y direction along an air bearing (air pad) 75 along the Y-axis guides 71A and 7IB. , 72 B, and a coarse movement stage 64 is disposed between the sliders 72 A and 72 B via a connecting member 77.
- the coarse motion stage 64 is suspended along the Y-axis guides 71A and 71B together with the sliders 72A and 72B while being suspended on the bottom side of the support plate 66. It can move smoothly in the Y direction.
- one of the stators 7 SA and a slider 76 MA composed of a coil provided on the slider 72 A side constitute a Y-axis linear motor 76 YA, which is also fixed to the other Y-axis guide 71 B and slider 72 B
- the sliders 72A and 72B and the coarse stage 64 are driven in the Y direction along the Y-axis guides 71A and 71B by the two-axis Y-axis linear motors 76YA and 76YB. You. At this time, as shown in FIG.
- the Y-axis guides 71A, 71; 6 can also move inside the holding members 73, 74A and 73B, 74B.
- the coarse stage 64 and sliders 72A and 72B and the Y-axis guides 71A and 71B move in opposite directions along the Y-axis so as to almost satisfy the law of conservation of momentum. Will do. This prevents the influence of the vibration generated in the reticle stage system during scanning exposure from affecting other parts (such as the projection optical system PL stage system).
- a magnetic or photoelectric device as a position measuring device for measuring the position of the Y-axis guides 71 1 and 71 1 in the ⁇ direction is provided on the bottom of the support plate 66.
- Non-contact type linear encoders 85 ⁇ and 85 ⁇ are arranged.
- FIG. 3 corresponding to the front view of FIG. 2 (a)
- the stator 83 SA and the mover 8 are provided between one holding member 73A and the Y-axis guide 71A.
- a linear motor 8 3 YA for position correction consisting of 3 MA is installed, and between the other holding member 73 B and the Y-axis guide 71 B, there are a stator 83 SB and a mover 83 MB.
- Linear motor for position correction 8 3 YB is installed.
- a rectangular flat fine stage 63 which is elongated in the Y direction, is arranged inside a rectangular frame-shaped coarse stage 64, and is arranged on the fine stage 63 along the scanning direction. And two reticles R1 and R2 are placed. Since the reticles R 1 and R 2 are each held by vacuum suction or the like via a reticle holder (not shown), the reticle stage system of this example can also be referred to as a “double holder system”. This double-holder reticle stage system can also be regarded as a kind of “double reticle stage”.
- the fine movement stage 63 is mounted on the guide surface 62a of the reticle base 62 so as to be movable two-dimensionally via an air bearing, An opening is formed at the bottom of the reticles R 1 and R 2 of the stage 63 to allow exposure light to pass therethrough.
- a mouth-to-Lenz force is used between the inner surface of the coarse movement stage 64 in the + X direction and the side surface of the fine movement stage 63 in the + X direction.
- two X-axis actuators, 78 XA and 78 XB, which are displaced in the X direction in a non-contact manner using electromagnetic force such as a small linear gear system, are installed, and the coarse stage 64 is mounted in the + Y direction.
- a Y-axis actuator 78 Y that displaces in the Y direction in a non-contact manner using a similar electromagnetic force is installed.
- the EI-core type actuyue is a high rigidity relative displacement system that pushes and pulls a magnetic plate (I-shaped core) from both sides using an electromagnet with a coil wound around an E-shaped core. It ’s a night that you can do.
- first reticle Y-axis interferometer 79 composed of a laser interferometer arranged on the bottom surface of support plate 66.
- a long and narrow moving mirror 80 X is fixed to the side of the fine movement stage 63 in the X direction, and a reticle X-axis interferometer 8 1 X composed of a laser interferometer arranged to face the moving mirror 80 X.
- X is irradiated with a measurement beam
- the reticle X-axis interferometer 81 X measures the position of fine movement stage 63 in the X direction.
- the reticle interferometers 79, 8IX measure the positions of the coarse movement stage 64 and the fine movement stage 63 with reference to a reference mirror (not shown) fixed to the side of the projection optical system PL, for example.
- the fine movement stage 63 is driven with three degrees of freedom (rotational directions around the X, Y, and Z axes) with respect to the coarse movement stage 64. It may be driven at a degree or more (the maximum is 6 degrees of freedom). For example, at least one of the Z direction, the rotation direction around the X axis, and the rotation direction around the Y axis is added to the above three degrees of freedom, and the coarse movement stage 64 is moved.
- the fine movement stage 63 may be drivable.
- FIG. 4 is a plan view showing the fine movement stage 63 and the reticle base 62 shown in FIG. 1.
- the reticle base 62 has a substantially equilateral triangle (actually, in the scanning direction). Stablely supported by three variable mounts 61A to 61C arranged at the vertices of SD (Y-direction, close to an isosceles triangle), the fine movement of reticle base 62
- An opening 62b (see FIG. 3) through which the exposure light passes is formed in a region on the bottom surface side of the stage 63, that is, a region at the bottom of the illumination region 8R by the exposure light.
- two corner cube type movable mirrors 80YA, 80YB are fixed at predetermined intervals in the X direction on one side of the fine movement stage 63 in the Y direction, and an external laser is mounted on these movable mirrors 80YA, 80YB.
- the second reticle consisting of an interferometer Y-axis interferometer 8 1 YA, 8 1 YB irradiates a measuring beam, and the reticle Y-axis interferometer 8 1 YA, 8 1 YB rotates the fine movement stage 63 in the Y-direction and rotation The angle (jowing amount) is measured.
- the reticle Y-axis interferometers 81YA and 81B also measure the position of the fine movement stage 63 with reference to a reference mirror (not shown) fixed to the side of the projection optical system PL, for example.
- the optical axis (measurement axis) of the reticle X-axis interferometer 81 X passes through the optical axis AX of the projection optical system PL at the center of the illumination area 8R, and the two reticle Y-axis interferometers 81
- the center line (symmetry axis) of the optical axis of YA, 81 YB also passes through the optical axis AX.
- At least one of the reticle X-axis interferometer 81 X and the reticle Y-axis interferometer 81YA, 81YB has its measurement beam deviated in the Z direction from the pattern surface of the reticle Rl, R2. If at least one of the interferometers is used, the other The beam is irradiated to the moving mirror of the fine movement stage 63, and the tilt amount of the fine movement stage 63, that is, the rotation amount around the X axis (based on the measurement values corresponding to the two measurement beams, respectively) It is desirable to be able to measure at least one of the pitching amount) and the rotation amount (rolling amount) around the Y axis. Also, if necessary, a position detection system that detects the position of the reticle pattern surface in the Z direction (eg, An autofocus sensor on the reticle side, etc.) may be further provided.
- a position detection system that detects the position of the reticle pattern surface in the Z direction (eg
- FIG. 3 shows a state in which the support plate 66 on which the coarse movement stage 64 is suspended is shifted upward from the state of FIG. 1.
- the reticle stage system of this example is assembled.
- reticle base 62 is fixed on variable mount portions 61 A to 61 C, and fine movement stage 63 is placed on reticle base 62.
- the Y-axis guides 71 A and 71 B and the coarse movement stage 64 are mounted on the bottom side of the support plate 66 in the positional relationship shown in FIG.
- the support plate 66 is fixed to the position 66P of the two-dot chain line in FIG. 3 so that the fine movement stage 63 fits inside the coarse movement stage 64, and then the X-axis actuator shown in FIG.
- the reticle stage system can be assembled efficiently by installing the 78XA, 78XB and the Y-axis actuator.
- Fig. 6 shows the control system of the reticle stage system of this example.
- a synchronous control system 92 is connected to a main control system 91 composed of a computer and supervising and controlling the operation of the entire device.
- a reticle stage control system 93 for controlling the operation of the reticle stage system and a wafer stage control system 94 for controlling the operation of the wafer stage system are connected to the system 92.
- the synchronization control system 92 supplies various timing information and the like so that the operations of the reticle stage control system 93 and the wafer stage control system 94 are synchronized during scanning exposure under the control of the main control system 91.
- the Y coordinate of the coarse movement stage 64 measured by the first reticle Y-axis interferometer 79, the fine movement stage 6 measured by the second reticle Y-axis interferometer 81YA, 81YB The two Y coordinates of 3 and the X coordinate of the fine movement stage 63 measured by the reticle X-axis interferometer 81 X are supplied to the position detection system 95. Further, the Y coordinates of the Y-axis guides 71A and 71B measured by the linear encoders 85A and 85B are also supplied to the position detection system 95.
- the position detection system 95 supplies these measured values to the main control system 91 via the synchronous control system 92.
- the Y-axis linear motor drives the coarse movement stage 64 in the Y direction
- the X-axis actuator drives the fine movement stage relative to the coarse movement stage.
- the main control system 9 1 is connected to the position detection system 9 via the synchronous control system 9 2. 5 is supplied with information on the target position and the target speed of the fine movement stage 63.
- the main control system 91 corrects the position of the fine movement stage 63 relative to the coarse movement stage 64 with respect to the position detection system 95, and the Y-axis guides 71A, 1 Provides information on the target position in the Y direction of B.
- the position detection system 95 detects an error in the position and speed of the fine movement stage 63 and, as an example, the amount of displacement of the fine movement stage 63 from the center within the movable range with respect to the coarse movement stage 64.
- Move As a result, the fine movement stage 63 and the reticles R 1 and R 2 thereon are scanned at a constant speed in the + Y direction or the one Y direction. The position is corrected so as to correct the synchronization error accordingly.
- PRY 1 PRY2 + PRY3... (1)
- the reticle R 1 (or R 2) is alternately scanned by the fine movement stage 63 in the + Y direction and the ⁇ Y direction.
- the positions of the axis guides 71A and 71B are constant as an average.
- the Y-axis guides 71A and 71B gradually move in the Y direction and move out of the movable range. There is a fear.
- the linear motors 83YA and 83YB for position correction are supplied via the drive system 96.
- the exposure can be continuously performed by correcting the positions of the Y-axis guides 71A and 71B.
- the illumination area 8R moves on the reticle R1 in the + Y direction and the one Y direction for each shot.
- the scanning of the fine movement stage 63 is performed in a reciprocating motion so as to cross alternately, and when the pattern of the second reticle R2 is transferred onto the wafer, the illumination area 8R is set to the reticle R2 for each shot.
- the scanning of the fine movement stage 63 is performed in a reciprocating motion so as to alternately cross the top in the + Y direction and the one Y direction. For this reason, for example, even when performing double exposure of the patterns of the reticles R 1 and R 2, almost no time is required for shifting from the reticle R 1 to the reticle R 2, and the exposure is performed at a high throughput.
- the reticle stage system of the projection exposure apparatus The fine movement stage 63 is only mounted on the base 6 2, and the coarse movement stage 64 for driving it and the Y-axis linear motors 7 6 YA and 7 6 YB are all supported on the upper side. It is suspended on a plate 6 6. That is, the driving device for driving fine movement stage 63 on reticle base 62 does not contact reticle base 62 at all. Therefore, the influence of the vibration generated by the driving device such as the Y-axis linear motors 76YA, 76YB on the fine movement stage 63 is almost eliminated, and high exposure accuracy can be obtained. In addition, even if the scanning speed is increased, the influence of vibration does not increase, so that the exposure accuracy can be improved and the throughput can be increased.
- the reticle base 62 of the present example does not receive a heavy load and is less affected by vibration, as an example, the support member 53 for the projection optical system PL shown in FIG.
- the reticle base 62 may be supported via (for example, the projections 60A and 6OB in FIG. 1). At this time, it is desirable to provide the above-mentioned variable mount portions 61A to 61C between the support member and the reticle base 62 or between the support member and the support plate 53.
- the projection optical system PL has no adverse effects such as vibrations, and the distance between the reticle Rl, R2 and the projection optical system PL is more stably maintained.
- the reticle stage system in this example is a double-holder system, but in addition, a single-holder system in which only one reticle is mounted on fine movement stage 63, and a double-stage system in which two fine movement stages are provided in parallel May be adopted.
- a single holder type fine movement stage Alternatively, a single-stage method that uses only one may be adopted.
- an air bearing (air pad) 82 is used as a cushioning member for holding the Y-axis guides 71A and 71B.
- a magnetic levitation type bearing may be used. Further, since the vibrations of the Y-axis guides 71A and 71B are not directly transmitted to the fine movement stage 63, even if a mechanical bearing such as a ball bearing is used as the cushioning member. Good.
- the Y-axis guides 71A and 71B are used as counter masses to satisfy the momentum conservation law.
- other configurations such as the Y-axis guides 71A and A separate counseling cell may be provided separately from 7 1 B to satisfy the law of conservation of momentum.
- a column other than the first column 59A to 59C is fixed on the surface plate 12 or the floor 1
- the actuator provided in the column the force for canceling the reaction force generated when the fine movement stage 63 and the coarse movement stage 64 are moved is adjusted by the coarse movement stage 64 or the fine movement stage 63, and the reticle base. 62 or the support plate 66.
- FIG. 5 is a plan view showing a support plate 53 on which the projection optical system PL of FIG. 1 is placed.
- the support plate 53 is a variable mount unit arranged at a vertex of a substantially equilateral triangle. It is placed on 52 A to 52 C, and a U-shaped notch 53a is formed on one side of the support plate 53 in the Y direction, and three U-shaped notches 53a are formed around the notch 53a.
- Drive elements 56 are arranged at equal angular intervals.
- the cover 55 is screwed so as to cover the open end of the cutout 53a, whereby the mounting of the projection optical system PL is completed. Further, when it becomes necessary to perform, for example, maintenance of the projection optical system PL during operation of the projection exposure apparatus, the cover 55 may be removed, and the projection optical system PL may be taken out from the notch 53a.
- the support plate 53 is mounted on the variable mount sections 52A to 52C, and the drive mechanism of the fine movement stage 63 of the reticle stage system is Since it is arranged on the bottom side of the upper support plate 66 and there is no obstacle near the upper end of the projection optical system PL, there is an advantage that the projection optical system PL can be easily attached and detached.
- the projection optical system PL is a straight cylinder type, adoption of such a configuration makes attachment and detachment easier.
- the projection exposure apparatus of the present embodiment assembles a reticle stage system and a wafer stage system composed of a number of mechanical parts, and adjusts the optical adjustment and support plate 53 of the projection optical system PL composed of a plurality of lenses. It can be manufactured by mounting it on the board and performing comprehensive adjustment (electrical adjustment, operation check, etc.). It is desirable to manufacture the projection exposure apparatus in a clean room where the temperature, cleanliness, etc. are controlled.
- FIG. 7 shows an example of a semiconductor device manufacturing process.
- a wafer W is first manufactured from a silicon semiconductor or the like.
- a photoresist is applied on the wafer W (step S10), and in the next step S12, the reticle R1 shown in FIG.
- the pattern 1 (represented by the symbol A) is scanned and exposed on all shot areas SE on the wafer W.
- step S14 development and etching are performed.
- a predetermined pattern is formed in each of the shot areas SE of the wafer W by performing the ion implantation and the like.
- step S16 a photoresist is applied onto the wafer W, and then in step S18, the reticle R2 is moved below the illumination area instead of the reticle R1 in FIG. 2 (a). Te, and c of the reticle R 2 Pas evening one emission (represented by symbol B) is scanned and exposed on each shot area SE on the wafer W, in step S 2 0, development and Etchinguyai on implantation of the wafer W As a result, a predetermined pattern is formed in each shot area of the wafer W.
- step S22 a dicing process for separating each chip CP on the wafer W one by one, a bonding process and a packaging process (step S24), a semiconductor device as a product is obtained. SP is manufactured.
- the present invention is applied to the scanning exposure type projection exposure apparatus.
- the present invention is not limited to this, and is also applicable to a batch exposure type projection exposure apparatus such as a step-and-repeat type. can do.
- the magnification of the projection optical system may be not only a reduction system but also an equal magnification or an enlargement system.
- the projection optical system catadioptric system, or catoptric system in the case of using a quartz or fluorite use Les F 2 laser or the like material which transmits far ultraviolet rays such as the glass material when using a far ultraviolet one THE such excimer It is desirable to use an optical system of this type.
- the present invention provides a proximity type exposure apparatus, an exposure apparatus using an X-ray such as EUV light in the soft X-ray region or hard X-ray as an exposure beam, and a charged particle beam such as an electron beam or an ion beam. (Energy beam) as the exposure beam
- X-ray such as EUV light in the soft X-ray region or hard X-ray
- a charged particle beam such as an electron beam or an ion beam. (Energy beam) as the exposure beam
- the present invention can be similarly applied to an exposure apparatus that can be used.
- X-rays use a reflective system for the projection system (especially for EUV light, a reflective projection system is used, and for the reticle, a reflective reticle is used).
- an electron optical system including an electron lens and a deflector may be used as the projection system (optical system).
- the optical path through which the electron beam passes is made in a vacuum state.
- a thermionic emission type lanthanum hexaborite (L a B 6 ) or tantalum (T a) can be used as an electron gun.
- the application of the exposure apparatus is not limited to an exposure apparatus for semiconductor manufacturing.
- an exposure apparatus for a liquid crystal display element formed on a square glass plate an exposure apparatus for a display apparatus such as a plasma display, and an imaging apparatus. It can be widely applied to an exposure apparatus for manufacturing a device (such as a CCD), a micromachine, a thin-film magnetic head, or a DNA chip.
- the movable stage may be held by any method such as an air-floating type using an air bearing or a magnetic levitation type. Further, the stage may be of a type that moves along a guide or a guideless type that does not have a guide.
- reaction force generated by the movement of the wafer stage is mechanically reduced by using a frame member as described in Japanese Patent Application Laid-Open No. Hei 8-166475 (US Pat. No. 5,528,118). (Earth).
- reaction force generated by the movement of the reticle stage is mechanically controlled by using a frame member, as described in Japanese Patent Application Laid-Open No. 8-330024 (QJSP6, 020, 710). You may miss it on the floor (earth).
- the surface plate 12 is installed on the floor 1 via the vibration isolating tables 11A to 11C, and the wafer base 13 and the first column are placed on the surface plate 12.
- the present invention is not limited to this configuration. That is, instead of placing the wafer base 13 on the surface plate 12, for example, suspending the wafer base 13 with respect to the support plate 53 via a column, or changing the surface plate 12 It may be configured to be supported by the mounts 52A to 52C.
- the vibration isolating tables 11 A to 11 C for example, the wafer base 13 and the second columns 5 1 8 and 5 1 B on the floor 1 or the platen 12 may be used. May be supported by different vibration isolators.
- the coarse movement stage (second movable body) for driving the movable stage (first movable body) includes a base on which the movable stage is mounted. Since it is not in contact with the member (reticle base), the movable stage can be controlled at high speed and with high precision without increasing the load on the base member. Further, the influence of the vibration from the driving device of the coarse movement stage is reduced, and high exposure accuracy can be obtained.
- the first movable stage (reticle stage) and the second movable stage (wafer stage) can have relatively high rigidity. Since they are indirectly connected via the attitude control member, low-frequency vibrations are not independently transmitted to the two movable stages, and high exposure accuracy can be obtained. Therefore, by exposing a pattern for a device using each exposure apparatus of the present invention, a high-performance data excellent in pattern fidelity such as line width accuracy is obtained.
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Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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AU15549/01A AU1554901A (en) | 1999-12-16 | 2000-11-30 | Exposure method and exposure apparatus |
EP20000978020 EP1248288A1 (en) | 1999-12-16 | 2000-11-30 | Exposure method and exposure apparatus |
KR1020027007477A KR20020054368A (ko) | 1999-12-16 | 2000-11-30 | 노광방법 및 장치 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP35820399 | 1999-12-16 | ||
JP11/358203 | 1999-12-16 |
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WO2001045145A1 true WO2001045145A1 (fr) | 2001-06-21 |
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PCT/JP2000/008449 WO2001045145A1 (fr) | 1999-12-16 | 2000-11-30 | Procede et dispositif d'exposition |
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US (2) | US20030142281A1 (ja) |
EP (1) | EP1248288A1 (ja) |
KR (1) | KR20020054368A (ja) |
AU (1) | AU1554901A (ja) |
WO (1) | WO2001045145A1 (ja) |
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JP2009194384A (ja) * | 2008-02-13 | 2009-08-27 | Asml Netherlands Bv | 可動サポート、位置制御システム、リソグラフィ装置、および、交換可能オブジェクトの位置を制御する方法 |
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US20040119964A1 (en) * | 2002-12-18 | 2004-06-24 | Nikon Corporation | Double isolation fine stage |
US20050128449A1 (en) * | 2003-12-12 | 2005-06-16 | Nikon Corporation, A Japanese Corporation | Utilities transfer system in a lithography system |
JP5130714B2 (ja) | 2004-04-09 | 2013-01-30 | 株式会社ニコン | 移動体の駆動方法、ステージ装置、露光装置、露光方法、及びデバイス製造方法 |
EP1794650A4 (en) * | 2004-09-30 | 2008-09-10 | Nikon Corp | OPTICAL PROJECTION DEVICE AND EXPOSURE DEVICE |
JP4373316B2 (ja) * | 2004-10-14 | 2009-11-25 | ミライアル株式会社 | 薄板支持容器用クランプ装置 |
KR20150036734A (ko) * | 2006-12-27 | 2015-04-07 | 가부시키가이샤 니콘 | 스테이지 장치, 노광 장치, 및 디바이스의 제조 방법 |
EP2132600B1 (en) | 2007-03-27 | 2012-01-04 | Koninklijke Philips Electronics N.V. | Split axes stage design for semiconductor applications |
US7889321B2 (en) * | 2007-04-03 | 2011-02-15 | Asml Netherlands B.V. | Illumination system for illuminating a patterning device and method for manufacturing an illumination system |
JP5350139B2 (ja) * | 2008-10-01 | 2013-11-27 | キヤノン株式会社 | 露光装置、及びデバイスの製造方法 |
US20110085152A1 (en) * | 2009-05-07 | 2011-04-14 | Hideaki Nishino | Vibration control apparatus, vibration control method, exposure apparatus, and device manufacturing method |
DE102011005826A1 (de) * | 2011-03-21 | 2012-03-29 | Carl Zeiss Smt Gmbh | Optische Vorrichtung |
CN102955368B (zh) * | 2011-08-22 | 2015-09-30 | 上海微电子装备有限公司 | 一种步进光刻设备及光刻曝光方法 |
JP6189303B2 (ja) | 2011-09-12 | 2017-08-30 | マッパー・リソグラフィー・アイピー・ビー.ブイ. | 基板処理装置 |
WO2013160082A1 (en) | 2012-04-27 | 2013-10-31 | Asml Netherlands B.V. | Lithographic apparatus |
JP2017073503A (ja) * | 2015-10-08 | 2017-04-13 | 株式会社ニューフレアテクノロジー | ステージ装置および荷電粒子ビーム描画装置 |
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JPH11189332A (ja) | 1997-12-26 | 1999-07-13 | Canon Inc | ステージ装置およびこれを用いた露光装置ならびにデバイス製造方法 |
KR20010041257A (ko) | 1998-12-25 | 2001-05-15 | 오노 시게오 | 반사굴절 결상 광학계 및 그 광학계를 구비한 투영 노광장치 |
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JP2001118773A (ja) | 1999-10-18 | 2001-04-27 | Nikon Corp | ステージ装置及び露光装置 |
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2000
- 2000-11-30 EP EP20000978020 patent/EP1248288A1/en not_active Withdrawn
- 2000-11-30 WO PCT/JP2000/008449 patent/WO2001045145A1/ja active Search and Examination
- 2000-11-30 KR KR1020027007477A patent/KR20020054368A/ko not_active IP Right Cessation
- 2000-11-30 AU AU15549/01A patent/AU1554901A/en not_active Abandoned
-
2003
- 2003-02-13 US US10/365,534 patent/US20030142281A1/en not_active Abandoned
-
2004
- 2004-01-14 US US10/756,343 patent/US6937319B2/en not_active Expired - Fee Related
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JPH03221336A (ja) * | 1990-01-24 | 1991-09-30 | Sumitomo Heavy Ind Ltd | 可動ステージ装置 |
JPH0547633A (ja) * | 1991-08-13 | 1993-02-26 | Fujitsu Ltd | 露光装置 |
GB2290658A (en) * | 1994-06-27 | 1996-01-03 | Nikon Corp | Electromagnetic alignment and scanning apparatus |
JPH11307425A (ja) * | 1998-04-22 | 1999-11-05 | Nikon Corp | マスクの受け渡し方法、及び該方法を使用する露光装置 |
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JP2009194384A (ja) * | 2008-02-13 | 2009-08-27 | Asml Netherlands Bv | 可動サポート、位置制御システム、リソグラフィ装置、および、交換可能オブジェクトの位置を制御する方法 |
US9261799B2 (en) | 2008-02-13 | 2016-02-16 | Asml Netherlands B.V. | Movable support, position control system, lithographic apparatus and method of controlling a position of an exchangeable object |
Also Published As
Publication number | Publication date |
---|---|
US20030142281A1 (en) | 2003-07-31 |
US20040160586A1 (en) | 2004-08-19 |
AU1554901A (en) | 2001-06-25 |
EP1248288A1 (en) | 2002-10-09 |
KR20020054368A (ko) | 2002-07-06 |
US6937319B2 (en) | 2005-08-30 |
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