WO2022171538A1 - System und projektionsbelichtungsanlage - Google Patents
System und projektionsbelichtungsanlage Download PDFInfo
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- WO2022171538A1 WO2022171538A1 PCT/EP2022/052742 EP2022052742W WO2022171538A1 WO 2022171538 A1 WO2022171538 A1 WO 2022171538A1 EP 2022052742 W EP2022052742 W EP 2022052742W WO 2022171538 A1 WO2022171538 A1 WO 2022171538A1
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- WIPO (PCT)
- Prior art keywords
- component
- decoupling
- elements
- decoupling elements
- forces
- Prior art date
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- 230000005284 excitation Effects 0.000 claims abstract description 11
- 238000010276 construction Methods 0.000 claims description 4
- 238000005286 illumination Methods 0.000 description 37
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- 238000005859 coupling reaction Methods 0.000 description 5
- 238000000576 coating method Methods 0.000 description 4
- 238000001459 lithography Methods 0.000 description 4
- 238000009304 pastoral farming Methods 0.000 description 4
- 238000001900 extreme ultraviolet lithography Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
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- 238000000429 assembly Methods 0.000 description 2
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- 239000010703 silicon Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
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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
- G03F7/70058—Mask illumination systems
- G03F7/70075—Homogenization of illumination intensity in the mask plane by using an integrator, e.g. fly's eye lens, facet mirror or glass rod, by using a diffusing optical element or by beam deflection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/046—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means using combinations of springs of different kinds
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/1822—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors comprising means for aligning the optical axis
- G02B7/1827—Motorised alignment
- G02B7/1828—Motorised alignment using magnetic means
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/708—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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/06—Magnetic or electromagnetic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/06—Stiffness
- F16F2228/063—Negative stiffness
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/08—Functional characteristics, e.g. variability, frequency-dependence pre-stressed
Definitions
- the present invention relates to a system for a projection exposure system and a projection exposure system with such a system.
- Microlithography is used to produce microstructured components such as integrated circuits.
- the microphotography process is carried out using a lithography system which has an illumination system and a projection system.
- the image of a mask (reticle) illuminated by means of the illumination system is projected by means of the projection system onto a substrate coated with a light-sensitive layer (photoresist) and arranged in the image plane of the projection system, for example a silicon wafer, in order to project the mask structure onto the light-sensitive coating of the to transfer substrate.
- a lithography system which has an illumination system and a projection system.
- the image of a mask (reticle) illuminated by means of the illumination system is projected by means of the projection system onto a substrate coated with a light-sensitive layer (photoresist) and arranged in the image plane of the projection system, for example a silicon wafer, in order to project the mask structure onto the light-sensitive coating of the to transfer substrate.
- a light-sensitive layer photoresist
- EUV lithography systems (Engl .: Extreme Ultraviolet, EUV) are currently being developed, which light with a wavelength in the range from 0.1 nm to 30 nm, in particular 13.5 nm, use.
- EUV lithography systems must because of the high absorption of most Ma materials of light of this wavelength reflective optics, ie mirrors, instead of - as before - refractive optics, ie lenses, who used the.
- an object of the present invention is to provide an improved system for a projection exposure system.
- the system comprises a first component, a second component, and a decoupling device which is designed to decouple the second component in more than one degree of freedom from mechanical excitations of the first component, wherein the decoupling device comprises first decoupling elements, which have a positive stiffness, and second decoupling elements, which have a negative stiffness, and wherein the decoupling device comprises a third component which is arranged between the first component and the second component.
- first decoupling elements are provided with the positive rigidity and the second decoupling elements with the negative rigidity, it is possible to achieve a partial rigidity for the respective degree of freedom. As a result, a low decoupling frequency can be made possible even with a larger mass.
- the components can be integral components of the system.
- the first component is a support frame (force frame) of the projection exposure system
- the second component is a sensor frame (engl. sensor frame) of the projection exposure system.
- the first component can therefore also be referred to as a support frame.
- the second component can be referred to as a sensor frame.
- one of the components can also be an optical element or the like.
- the system can include any components or frames.
- the system is preferably a projection system or projection optics of the projection exposure system or part of a projection system.
- the system can also be a lighting system or part of a lighting system.
- the system can be an optical system or can be referred to as an optical system.
- the fact that the decoupling device is set up to "decouple" the second component from the first component means in the present case in particular that the decoupling device is set up to prevent movements, in particular vibrations or oscillations, which act on the first component, on the second component are transferred.
- a coordinate system with a first spatial direction or c-direction, a second spatial direction or y-direction and a third spatial direction or z-direction is preferably assigned to the system.
- the first spatial direction can also be referred to as the depth direction.
- the second spatial direction can also be referred to as the width direction or horizontal direction.
- the third spatial direction can also be referred to as the vertical direction.
- the decoupling device is set up to enable decoupling of the second component from the first component not in exactly one but in more than one degree of freedom, ie in at least two degrees of freedom.
- These two degrees of freedom can be, for example, a translational degree of freedom and a rotational degree of freedom.
- the first component is moved translationally relative to the second component by a mechanical excitation from the outside.
- the mechanical excitations can be vibra- tions or vibrations acting on the first component.
- the first component for example, performs a tilting or rotational movement with respect to the second component.
- the fact that the first decoupling elements have a “positive” rigidity means that the first decoupling elements generate a force when they are deformed or deflected, which counteracts the deformation or deflection.
- a coil spring that is lengthened generates a force that counteracts this change in length.
- a “negative” rigidity is to be understood as meaning the property that the second decoupling elements generate a force when they are deformed or deflected, which force acts in the direction of the deformation or deflection.
- a prestressed compression spring has such a negative rigidity. With an elongation of such a pre-stressed compression spring, it generates a force that acts in the direction of the change in length.
- Prestressed leaf springs or two magnetic elements that face each other either with their south poles or north poles also have a negative stiffness. The negative stiffness and the positive stiffness ben in particular, so that the decoupling device has a zero stiffness ⁇ speed.
- the decoupling device is configured to decouple the second component from mechanical excitations of the first component in six degrees of freedom.
- the decoupling device can also be set up to decouple the second component only in three, four or five degrees of freedom from mechanical excitations of the first component.
- the decoupling device is suitable for decoupling at least two degrees of freedom.
- the first decoupling elements are spring elements, with the second decoupling elements being magnetic elements or prestressed spring elements.
- the first decoupling elements can be, for example, coil springs, leaf springs or leaf spring assemblies.
- the first decoupling elements are compression springs.
- the second decoupling elements are, for example, magnetic elements in the form of permanent magnets.
- the second decoupling elements can also be prestressed coil springs, plate springs or plate spring assemblies.
- the second decoupling elements are particularly preferably pretensioned helical springs. "Preloaded" means in particular ⁇ special that the spring elements are mounted under a preload. In the case of prestressed compression springs, these are pressed together or compressed , for example.
- the second decoupling elements are arranged in pairs.
- the second decoupling elements are then arranged in pairs if they are designed as magnetic elements.
- Two magnetic elements are always combined to form a pair of magnetic elements.
- the magnet elements of a pair of magnet elements are arranged in such a way that either their north poles or their south poles are arranged facing one another, so that the magnet elements of a magnet element pair repel one another. Accordingly, an air gap is arranged between the magnetic elements of a pair of magnetic elements.
- the decoupling device includes a third component, which is arranged between the first component and the second component.
- the third component can also be referred to as an intermediate component or intermediate frame.
- the third component is preferably operatively connected to the first component, with the second component being operatively connected to the third component.
- the first decoupling elements and the second decoupling elements are arranged between the first component and the third component.
- the first decoupling elements designed as spring elements are preferably arranged in such a way that they are oriented along the third spatial direction or z-direction. For example, four first decoupling elements are provided, which are placed at corners of the third component. The first decoupling elements are preferably placed between the third component and horizontally arranged arm sections of the first component.
- the second decoupling elements are in the event that these elements are designed as Magnetele, arranged such that the pairs of magnetic elements Magnetic element pair repel viewed along the second spatial direction or y-direction. Viewed along the second spatial direction, the pairs of magnetic elements are placed on both sides of the third component. A magnet element of each pair of magnet elements is firmly connected to the first component. If the second decoupling elements are prestressed spring elements, these spring elements are coupled to the third component with the aid of pressure rods. The pressure rods are articulated with the help of solid bodies, on the one hand, with the third component and, on the other hand, with the respective prestressed spring element.
- the second decoupling elements are in a state of equilibrium. This means that the second decoupling elements, which are arranged on both sides of the third component, generate forces acting only in the second spatial direction or y-direction, which cancel each other out, since the magnet element pairs are arranged on both sides of the third component.
- the second decoupling elements apply forces to the third component, which act against forces applied to the third component by the first coupling elements.
- the forces of the first decoupling elements and the second coupling elements cancel each other out, so that a force-free deflection of the third component relative to the first component and vice versa is possible.
- the second component is suspended from the third component with the aid of third decoupling elements which bring about a decoupling of the second component from the third component in a horizontal direction.
- the horizontal direction corresponds to the second spatial direction or the y-direction.
- "Suspended" in the present case means in particular that the decoupling elements cannot transmit compressive forces, only tensile forces.
- the third decoupling elements transfer a weight force of the second component to the third component.
- the third decoupling elements are traction cables.
- the traction cables can be arranged in the manner of a parallelogram. For example, at least three traction cables are provided. Four traction cables can also be provided.
- the traction cables can be steel cables or plastic cables, for example. Chains can also act as traction ropes.
- the third decoupling elements are tension rods, the third decoupling elements having a positive rigidity.
- the third decoupling elements are preferably each connected to the second component and the third component with the aid of solid joints.
- the system also includes fourth decoupling elements, which are each arranged between the second component and the third component and between the second component and the first component, the fourth decoupling elements having a negative stiffness.
- the tension rods can transfer small transverse forces in the horizontal direction.
- the fourth decoupling elements are provided. hen.
- the fact that the third decoupling elements have a positive stiffness and the fourth decoupling elements have a negative stiffness results in zero stiffness along the horizontal direction or y-direction. Adequate decoupling of the second component from the first component in the horizontal direction is therefore also possible.
- the fourth decoupling elements are magnetic elements.
- the magnetic elements are preferably arranged in pairs in pairs of magnetic elements.
- the magnet elements of a magnet element pair are arranged such that either their south poles or their north poles are arranged opposite one another, so that the magnet elements of the respective magnet element pair repel each other.
- a pair of magnetic elements is arranged between the second component and the third component.
- a second pair of magnetic elements is placed between the second component and the first component, viewed along the z-direction.
- the system further comprises a fourth component, which is arranged between the first component and the fourth decoupling elements, which are arranged between the second component and the first component, the fourth component being separated from the first component is decoupled.
- the fourth construction part can be plate-shaped, for example.
- four fifth coupling elements are provided, which store the fourth component on the first component.
- the fifth decoupling elements are spring elements.
- the fifth decoupling elements are preferably compression springs. Particularly soft spring elements are preferably used for the fifth decoupling elements.
- the first decoupling elements are designed to apply first forces to the third component when they are deflected, which forces are oriented counter to a direction of deflection of the first decoupling elements, with the second decoupling elements being designed to apply second forces to the third component when they are deflected Apply component, which are oriented in a deflection direction of the second decoupling elements, and the first forces and the second forces cancel each other out, so that the third component is force-free from steerable.
- the deflection of the third component relative to the first component can take place in that the first component moves and/or tilts relative to the third component, for example due to vibration.
- the second decoupling elements are initially in a state of equilibrium in which they apply oppositely oriented forces acting along the y-direction to the third component. These forces cancel each other out.
- the second decoupling elements move out of their equilibrium position, as a result of which they apply obliquely oriented forces to the third component, which in a horizontal zontal force component and can be broken down into a vertical force component.
- the first decoupling elements When the first component is deflected, the first decoupling elements are also deformed, so that they also apply forces to the third component.
- the forces of the first decoupling elements always act along the z-direction. These forces applied by the first decoupling elements act in opposition to the vertical force components of the forces applied by the second decoupling elements.
- the vertical force components and the forces applied by the first decoupling elements cancel each other out.
- the horizontal force components of the obliquely acting forces of the second decoupling elements also cancel each other out. As a result, the force-free deflectability of the third component is given.
- the projection exposure system can be an EUV lithography system or a DUV lithography system.
- EUV stands for "Extreme Ultraviolet” and denotes a working light wavelength between 0.1 nm and 30 nm.
- DUV stands for "Deep Ultraviolet” and denotes a working light wavelength between 30 nm and 250 nm.
- FIG. 1 shows a schematic meridional section of a projection exposure system for EUV projection lithography
- FIG. 2 shows a schematic view of an embodiment of a system for the projection exposure apparatus according to FIG. Y,
- Fig. 3 shows another schematic view of the system according to Fig. 2;
- Fig. 4 shows schematically forces acting on an intermediate component of the system according to Fig. 1;
- Fig. 5 shows another schematic view of the system according to Fig. Y
- FIG. 6 shows schematically forces acting on an intermediate component of the system according to FIG. 5;
- FIG. 7 shows a schematic view of a further embodiment of a system for the projection exposure system according to FIG.
- Fig. 8 shows a further schematic view of the system according to Fig. T
- Fig. 9 shows schematically forces acting on an intermediate component of the system according to Fig. 7;
- FIG. 10 shows a schematic view of a further embodiment of a system for the projection exposure system according to FIG. 1.
- Fig. 1 shows an embodiment of a projection Behchtungsstrom 1 (lithography system).
- an illumination system 2 of the projection exposure system 1 has, in addition to a light or radiation source 3, illumination optics 4 for illuminating an object field 5 in an object plane 6.
- the light source 3 can also be provided as a module that is separate from the rest of the illumination system 2 . In this case, the lighting system 2 does not include the light source 3 .
- a reticle 7 arranged in the object field 5 is exposed.
- the reticle 7 is held by a reticle holder 8 .
- the reticle holder 8 can be displaced via a reticle displacement drive 9, in particular in a scanning direction.
- 1 shows a Cartesian coordinate system with a c-direction x, a y-direction y and a z-direction z.
- the x-direction x runs perpendicular to the plane of the drawing.
- the y-direction y runs horizontally and the z-direction z runs vertically.
- the scanning direction runs along the y-direction y.
- the z-direction z runs perpendicular to object plane 6.
- the projection exposure system 1 includes projection optics 10.
- the projection optics 10 are used to image the object field 5 in an image field 11 in an image plane 12.
- the image plane 12 runs parallel to the object plane 6. Alternatively, there is also an angle different from 0° between the object plane 6 and the image plane 12 possible.
- a structure on the reticle 7 is imaged onto a light-sensitive layer of a wafer 13 arranged in the region of the image field 11 in the image plane 12 .
- the wafer 13 is held by a wafer holder 14 .
- the wafer holder 14 can be displaced in particular along the y-direction y via a wafer displacement drive 15 .
- the displacement of the reticle 7 on the one hand via the reticle displacement drive 9 and on the other hand of the wafer 13 via the wafer displacement drive 15 can be synchronized with one another.
- the light source 3 is an EUV radiation source.
- the light source 3 emits in particular EUV radiation 16, which is also referred to below as useful radiation, illumination radiation or illumination light.
- the useful radiation 16 has, in particular, a wavelength in the range between 5 nm and 30 nm a DPP source (Engl7 Gas Discharged Produced Plasma). It can also be a synchrotron-based radiation source.
- at the light Source 3 can be a free-electron laser (FEL).
- the illumination radiation 16 emanating from the light source 3 is bundled by a collector 17 ei.
- the collector 17 can be a collector with one or more ellipsoidal and/or hyperboloidal reflection surfaces.
- the at least one reflection surface of the collector 17 can be used in grazing incidence (Grazing Incidence, Gl), i.e. with angles of incidence greater than 45°, or in normal incidence (Normal Incidence, NI), i.e. with incidence angles smaller than 45° the illumination radiation 16 is applied to who.
- Gl grazing Incidence
- NI normal incidence
- the collector 17 can be structured and/or coated on the one hand to optimize its reflectivity for the useful radiation and on the other hand to suppress stray light.
- the intermediate focal plane 18 can represent a separation between a radiation source module, comprising the light source 3 and the collector 17, and the illumination optics 4.
- the illumination optics 4 includes a deflection mirror 19 and a first facet mirror 20 downstream of this in the beam path.
- the deflection mirror 19 can be a flat deflection mirror or alternatively a mirror with an effect that influences the bundle beyond the pure deflection effect.
- the deflection mirror 19 can be designed as a spectral filter which separates a useful light wavelength of the illumination radiation 16 from stray light of a different wavelength.
- the first facet mirror 20 is arranged in a plane of the illumination optics 4 that is optically conjugate to the object plane 6 as a field plane, it is also referred to as a field facet mirror.
- the first facet mirror 20 includes a large number of individual first facets 21, which are also referred to as a field facet. cette can be designated. Some of these first facets 21 are shown in FIG. 1 only by way of example.
- the first facets 21 can be embodied as macroscopic facets, in particular as rectangular facets or as facets with an arcuate or part-circular edge contour.
- the first facets 21 can be embodied as planar facets or alternatively as convexly or concavely curved facets.
- the first facets 21 themselves can each also be composed of a large number of individual mirrors, in particular a large number of micro-mirrors.
- the first facet mirror 20 can be designed in particular as a microelectromechanical system (MEMS system). Reference is made to DE 10 2008 009 600 A1 for details.
- MEMS system microelectromechanical system
- the lighting device radiation 16 runs horizontally, ie along the y-direction y.
- a second facet mirror 22 is arranged downstream of the first facet mirror 20 in the beam path of the illumination optics 4. If the second facet mirror 22 is arranged in a pupil plane of the illumination optics 4, it is also referred to as a pupil facet mirror. The second facet mirror 22 can also be arranged at a distance from a pupil plane of the illumination optics 4 . In this case, the combination of the first facet mirror 20 and the second facet mirror 22 is also referred to as a specular reflector. Specular reflectors are known from US 2006/0132747 A1, EP 1 614 008 B1 and US Pat. No. 6,573,978.
- the second facet mirror 22 includes a plurality of second facets 23. In the case of a pupil facet mirror, the second facets 23 are also referred to as pupil facets.
- the second facets 23 can also be macroscopic facets, which can have round, rectangular or hexagonal borders, for example, or alternatively they can be facets composed of micromirrors. In this regard, reference is also made to DE 10 2008 009 600 A1.
- the second facets 23 can have plane or alternatively convex or concave curved reflection surfaces.
- the illumination optics 4 thus forms a double-faceted system.
- This basic principle is also known as a honeycomb condenser (English: Fly's Eye Integrator).
- the second facet mirror 22 can be arranged tilted relative to a pupil plane of the projection optics 10, as is described in DE 10 2017220 586 A1, for example.
- the individual first facets 21 are imaged in the object field 5 with the aid of the second facet mirror 22 .
- the second facet mirror 22 is the last beam-forming or actually the last mirror for the illumination radiation 16 in the beam path in front of the object field 5.
- transmission optics can be arranged in the beam path between the second facet mirror 22 and the object field 5, which are used in particular for imaging PHg of the first facets 21 in the object field 5 contributes.
- the transmission optics can have exactly one mirror, but alternatively also two or more mirrors, which are arranged one behind the other in the beam path of the illumination optics 4 .
- the transmission optics can include, in particular, one or two mirrors for normal incidence (NP mirrors, normal incidence mirrors) and/or one or two mirrors for grazing incidence (GP mirrors, grazing incidence mirrors).
- the illumination optics 4 has exactly three mirrors after the collector 17, namely the deflection mirror 19, the first facet mirror 20 and the second facet mirror 22.
- the deflection mirror 19 can also be omitted, so that the illumination optics 4 can then have exactly two mirrors after the collector 17, namely the first facet mirror 20 and the second facet mirror 22.
- the imaging of the first facets 21 by means of the second facets 23 or with the second facets 23 and transmission optics in the object plane 6 is regularly only an approximate imaging.
- the projection optics 10 includes a plurality of mirrors Mi, which are numbered according to their arrangement in the beam path of the projection exposure system 1 .
- the projection optics 10 includes six mirrors M1 to M6. Alternatives with four, eight, ten, twelve or a different number of mirrors Mi are also possible.
- the projection optics 10 are doubly obscured optics.
- the penultimate mirror M5 and the last mirror M6 each have a passage opening for the lighting 16.
- the projection optics 10 has an image-side numerical aperture which is greater than 0.5 and which can also be greater than 0.6 and which can be 0.7 or 0.75 for example.
- Reflective surfaces of the mirrors Mi can be designed as free-form surfaces without a rotational axis of symmetry.
- the reflection surfaces of the mirrors Mi can be designed as aspherical surfaces with exactly one axis of rotational symmetry of the reflection surface shape.
- the mirrors Mi can have highly reflective coatings for the illumination radiation 16. These coatings can be designed as multilayer coatings, in particular with alternating layers of molybdenum and silicon.
- the projection optics 10 has a large object-image offset in the y-direction y between a y-coordinate of a center of the object field 5 and a y-coordinate of the center of the image field 11.
- This object-image offset in the y-direction y can be about as large as a z-distance between the object plane 6 and the image plane 12.
- the projection optics 10 can in particular be anamorphic. In particular, it has different image scales ⁇ x, ⁇ y in the x and y directions x, y.
- a positive image scale ß means an image without image reversal.
- a negative sign for the imaging scale ß means imaging with image reversal.
- the projection optics 10 thus leads in the c-direction x, i.e. in the direction perpendicular to the scanning direction, to a reduction in the ratio 4 1.
- the projection optics 10 lead to a reduction of 8J in the y-direction y, ie in the scanning direction.
- Imaging scales are also possible.
- the number of intermediate image planes in the x and y directions x, y in the beam path between the object field 5 and the image field 11 can be the same or, depending on the design of the projection optics 10, can be different. Examples of projection optics with different numbers of such intermediate images in the x and y directions x, y are known from US 2018/0074303 A1.
- one of the second facets 23 is assigned to precisely one of the first facets 21 in order to form a respective illumination channel for illuminating the object field 5 .
- lighting can result according to Köhler's principle.
- the far field is broken down into a large number of object fields 5 with the aid of the first facets 21 .
- the first facets 21 generate a plurality of images of the intermediate focus on the second facets 23 assigned to them.
- the first facets 21 are each imaged onto the reticle 7 by an associated second facet 23 in a superimposed manner in order to illuminate the object field 5 .
- the illumination of the object field 5 is as homogeneous as possible. It preferably has a uniformity error of less than 2%. Field uniformity can be achieved by superimposing different lighting channels.
- the illumination of the entrance pupil of the projection optics 10 can be defined geometrically. through By selecting the illumination channels, in particular the subset of the second facets 23 that guide light, the intensity distribution in the entrance pupil of the projection optics 10 can be adjusted. This intensity distribution is also referred to as illumination setting or illumination pupil filling.
- a likewise preferred pupil uniformity in the area of defined illuminated sections of an illumination pupil of the illumination optics 4 can be achieved by redistributing the illumination channels.
- the projection optics 10 can in particular have a homocentric entrance pupil. This can be accessible. It can also be inaccessible.
- the entrance pupil of the projection optics 10 cannot regularly be exactly illuminated with the second facet mirror 22 .
- the aperture rays often do not intersect at a single point.
- a surface can be found in which the distance between the aperture rays, which is determined in pairs, is minimal. This surface represents the entrance pupil or a surface conjugate to it in position space. In particular, this surface shows a finite curvature.
- the projection optics 10 may have different positions of the entrance pupil for the tangential and for the sagittal beam path.
- an imaging element in particular an optical construction element of the transmission optics, should be provided between the second facet mirror 22 and the reticle 7 . With the help of this optical element the different position of the tangential entrance pupil and the sagittal entrance pupil must be taken into account.
- the second facet mirror 22 is arranged in a surface conjugate to the entrance pupil of the projection optics 10 .
- the first facet mirror 20 is arranged tilted to the object plane 6 .
- the first facet mirror 20 is tilted relative to an arrangement plane which is defined by the deflection mirror 19 .
- the first facet mirror 20 is tilted relative to an arrangement plane that is defined by the second facet mirror 22 .
- FIG. 2 and FIG. 3 each show a schematic view of an embodiment of a system 100A for the projection exposure system 1.
- the system 100A can be, for example, projection optics 10 as explained above or part of the projection optics 10.
- the system 100A is assigned a coordinate system as mentioned above with a first spatial direction or c-direction x, a second spatial direction or y-direction y and a third spatial direction or z-direction z.
- the system 100A comprises a first component 102 and a second component 104.
- the components 102, 104 can be any components of the projection optics 10. It is subsequently assumed that the first component 102 is a support frame (force frame). The first component 102 is therefore referred to below as the support frame.
- the second component 104 is a sensor frame and is referred to as such below.
- the sensor frame 104 can carry a sensor system (not shown).
- the support frame 102 has a substantially U-shaped structure extending along the c-direction x. However, the support frame 102 can have any geometry.
- the support frame 102 includes a base Section 106 and two wall sections 108, 110 which are provided on the side of the Basisab ⁇ section 106. Arm sections 112, 114 protrude from the wall sections 108, 110 and extend in the direction of the respectively opposite wall section 108, 110.
- the sensor frame 104 is shown in a highly simplified form as a block-shaped or cuboid component . However, the sensor frame 104 can have any desired geometry.
- the sensor frame 104 is arranged inside the support frame 102 . This means that the support frame 102 surrounds the sensor frame 104 at least in sections.
- the system 100A includes a decoupling device 200A , which is suitable for preventing a mechanical excitation of the support frame 102 from being transmitted to the sensor frame 104 from the outside.
- the decoupling device 200A thus decouples the sensor frame 104 from the support frame 102.
- the decoupling device 200A includes an intermediate component 202 which is switched between the support frame 102 and the sensor frame 104 in a force path.
- the intermediate component 202 is block-shaped or cuboid-shaped. However, the intermediate member 202 may have any geometry. In the present case, the intermediate component 202 is an intermediate frame and is also referred to as such in the following.
- the intermediate frame 202 is coupled to the sensor frame 104 with the aid of flexible third decoupling elements 204, 206.
- the third decoupling elements 204, 206 can be referred to as ropes or traction ropes.
- Flexible in this context means that the third decoupling elements 204, 206 can only transmit tensile forces oriented counter to the z-direction z, for example resulting from a weight of the sensor frame 104. No forces can be transmitted in the other directions x, y.
- four third decoupling elements 204, 206 can be provided be spaced apart along the y-direction y and along the c-direction x. However, only three third decoupling elements 204, 206 can also be provided.
- the third decoupling elements 204, 206 are at connection points 208,
- connection points 208, 210 are spaced apart from one another along the y-direction y.
- the third decoupling elements 204, 206 are connected to the sensor frame 104 with the aid of connection points 211, 214. Further connection points (not shown) are also provided, which are arranged at a distance from the connection points 208, 210 viewed along the c-direction x.
- the third decoupling elements 204, 206 can be cables, in particular steel cables or plastic cables, which are suspended in the intermediate frame 202 and the sensor frame 104.
- the decoupling device 200A also includes first decoupling elements 216, 218, which are arranged between the intermediate frame 202 and the support frame 102 at ⁇ .
- the first decoupling elements 216, 218 are spring elements and can also be referred to as such.
- Four first decoupling elements 216, 218 are preferably provided, with a first decoupling element 216, 218 being attached to each corner of the intermediate frame 202 in the event that the intermediate frame 202 is square.
- the first decoupling elements 216, 218 are placed between the arm sections 112, 114 of the support frame 102 and the intermediate frame 202. The arm sections 112, 114 therefore carry the first decoupling elements 216, 218.
- the first decoupling elements 216, 218 weighs a weight of the intermediate frame 202 and the aforementioned weight of the sensor frame 104, which via the third Ent ⁇ coupling elements 204, 206 on the Intermediate frame 202 is transmitted.
- the first decoupling elements 216, 218 are coil springs. However, the first decoupling elements 216, 218 can also be plate springs or plate springs. The first decoupling elements 216, 218 can be pulled apart along the z-direction z and can be compressed counter to the z-direction z.
- the first decoupling elements 216, 218 can be compression springs. However, the term "compression springs" does not exclude the possibility that the first decoupling elements 216, 218 can also be pulled apart.
- the decoupling device 200A has second decoupling elements 220,
- the second decoupling elements 220, 222, 224, 226 are magnetic elements and can also be referred to as such.
- the second decoupling elements 220, 222, 224, 226 are permanent magnets.
- the second decoupling elements 220, 222, 224, 226 are in the form of pairs of magnetic elements 228, 230 placed on either side of the intermediate frame 202.
- the intermediate frame 202 is viewed along the y-direction y between the second decoupling elements 222, 224 placed.
- the second decoupling elements 220, 222 form a first pair of magnetic elements 228.
- the second decoupling elements 224, 226 form a second pair of magnetic elements 230.
- the second decoupling elements 220, 226 are firmly connected to the support frame 102.
- the second decoupling elements 222, 224 are firmly connected to the intermediate frame 202's.
- an air gap 232, 234 is provided between the second decoupling elements 220, 222 and the second decoupling elements 224, 226 in each case.
- Each second decoupling element 220, 222, 224, 226 has a north pole N and a south pole S.
- the second decoupling elements 220, 222, 224, 226 are placed in such a way that the north pole N and the south pole S are arranged next to one another viewed along the y-direction y.
- the second decoupling elements 220, 222, 224, 226 of each pair of magnetic elements 228, 230 are arranged in such a way that the south poles S face each other. are arranged.
- the second decoupling elements 220, 222, 224, 226 of each pair of magnetic elements 228, 230 thus repel each other.
- FIG. 2 shows the system 100A in an equilibrium position in which the support frame 102 is undeflected.
- the south poles S of the second decoupling elements 220, 222, 224 , 226 are placed opposite one another.
- 3 shows the system 100A in a deflected state .
- the support frame 102 In the deflected state, the support frame 102 is deflected, for example by vibrations, as indicated in FIG. 3 by an arrow 236 . Due to its deflection, the support frame 102 moves downwards against the z-direction z in the orientation of FIG. 3 .
- the intermediate frame 202 Due to its mass inertia, the intermediate frame 202 initially remains in its initial position, as a result of which the support frame 102 moves away from the intermediate frame 202 and the first decoupling elements 216, 218 are lengthened.
- the lengthening of the first decoupling elements 216, 218 causes each first decoupling element 216, 218 to apply a force F216, F218 to the intermediate frame 202.
- the forces F216, F218 are oriented counter to the z-direction z. The forces F216, F218 therefore counteract the deflection of the first decoupling elements 216, 218.
- the second decoupling elements 220 , 226 assigned to the support frame 102 are deflected relative to the second decoupling elements 222 , 224 which are assigned to the intermediate frame 202 .
- Forces F222, F224 acting on the intermediate frame 202 are generated, which are oriented obliquely to the forces F216, F218.
- FIG. 4 shows the forces F216, F218, F222, F224 acting on the intermediate frame 202 in a highly schematic manner.
- the forces F222, F224 acting at an angle can each be broken down into a horizontal force component F222h, F224h and a vertical force component F222v, F224v.
- the horizontal force components F222h, F224h counteract and in the y-direction y.
- the horizontal force components F222h, F224h are equal and act in opposite directions, so that the horizontal force components F222h, F224h cancel each other out.
- the intermediate frame 202 is therefore force-free in the horizontal direction or along and counter to the y-direction y.
- the vertical force components F222v, F224v act along the z-direction z and thus counter to the forces F216, F218.
- the vertical force components F222v, F224v and the forces F216, F218 are equal.
- the vertical force components F222v, F224v and the forces F216, F218 thus cancel each other out.
- the intermediate frame 202 is therefore always force-free. This freedom from force results in a very low natural frequency.
- the first decoupling elements 216, 218 have a positive rigidity viewed in the z-direction z. This means that the forces F216, F218 are oriented counter to a deflection direction of the first decoupling elements 216, 218 or counter to a deflection direction of the intermediate frame 202 relative to the supporting frame 102 or vice versa. In contrast to this, the magnet element pairs 228, 230 have a negative rigidity when viewed in the z-direction z.
- FIG. 5 shows a further view of the system 100A, with the support frame 102 being excited in this case by twisting or tilting relative to the sensor frame 104, as indicated by an arrow 236 .
- the first decoupling element 216 is compressed and the first decoupling element 218 is lengthened.
- the first decoupling element 216 applies a force F216 acting in the z-direction z to the intermediate frame 202 .
- the first decoupling element 218 applies a force F218 acting counter to the z-direction z to the intermediate frame 202 .
- the forces F216, F218 are oriented opposite to one another.
- the second decoupling element 222 applies to the intermediate frame 202 a force F222 that is oriented obliquely downward to the right in the orientation of FIG. 5 .
- the second decoupling element 224 applies a force F224 oriented obliquely to the top left in the orientation of FIG. 5 onto the intermediate frame 202 .
- FIG. 6 shows the forces F216, F218, F222, F224 acting on the intermediate frame 202 in a highly schematic manner.
- the force F216 acts in the z-direction z.
- the force F218 acts against the z-direction z and thus also against the force F216.
- the forces F222, F224 acting obliquely can each be broken down into a horizontal force component F222h, F224h and a vertical force component F222v, F224v.
- the horizontal force components F222h, F224h counteract and in the y-direction y.
- the horizontal force components F222h, F224h are equal and act in opposite directions, so that the horizontal force components F222h, F224H cancel each other out. In the horizontal direction
- the intermediate frame 202 is therefore force-free, either along or counter to the y-direction y.
- the vertical force component F222v acts against the z-direction z.
- the vertical force component F224v acts along the z-direction z.
- the vertical force component F222v and the force F216 cancel each other out. Accordingly, the vertical force component F224v and the force F218 cancel each other out.
- the intermediate frame 202 is therefore force-free. This results in zero rigidity of the decoupling device 200A even when the support frame 102 is rotated.
- FIG. 7 and FIG. 8 each show a schematic view of a further embodiment of a system 100B for the projection exposure apparatus 1.
- the system 100B essentially corresponds in terms of its structure to that of the optical system 100A . Therefore, only the differences between the systems 100A, 100B will be discussed below.
- the system 100B differs from the system 100A only in that the system 100B has a further embodiment of a decoupling device 200B.
- the decoupling device 200B includes an intermediate frame 202, as explained above, which is supported via the first decoupling elements 216, 218 on a support frame 102, as explained above. Furthermore, the decoupling device 200B has second decoupling elements 238, 240 in the form of spring elements, which are oriented perpendicular to the first decoupling elements 216, 218.
- the second decoupling elements 238, 240 are helical springs. However, the second decoupling elements 238, 240 can also be disk springs or stacks of disk springs.
- the second decoupling elements 238, 240 are prestressed compression springs.
- the second decoupling elements 238, 240 can also be referred to as spring elements.
- Compression rods 242, 244 are provided between the second decoupling elements 238, 240 and the intermediate frame 202, each of which can bring a compressive force from the second decoupling elements 238, 240 onto the intermediate frame 202.
- the pressure rod 242 is connected via a solid joint 246 to the second decoupling element 238 and via a solid joint 248 to the intermediate frame 202 .
- the pressure rod 244 is connected via a solid joint 250 to the intermediate frame 202 and via a solid joint 252 to the second decoupling element 240 .
- a “solid body joint” is to be understood here as a region of a component which allows a relative movement between two rigid body regions by bending.
- decoupling device 200B The functionality of the decoupling device 200B is explained below.
- 7 shows the system 100B in an equilibrium position in which the support frame 102 is undeflected.
- the pressure rods 242, 244 are arranged horizontally and thus run along the y-direction y.
- the second decoupling elements 238, 240 apply pressure forces to the intermediate frame 202 via the pressure rods 242, 244, which forces are of the same magnitude and are oriented in opposite directions, so that they cancel each other out.
- FIG. 8 shows the system 100B in a deployed state.
- the support frame 102 In the deflected state, the support frame 102 is deflected, for example by vibrations, as indicated by an arrow 236 in FIG.
- the support frame 102 moves due to its deflection in the orientation of FIG. 8 against the z-direction z down.
- the intermediate frame 202 Due to its inertia, the intermediate frame 202 initially remains in its starting position, as a result of which the support frame 102 is moved away from the intermediate frame 202 and the first decoupling elements 216, 218 are lengthened.
- the lengthening of the first decoupling elements 216, 218 causes that each first decoupling element 216, 218 applies a force F216, F218 to the intermediate frame 202.
- the forces F216, F218 are oriented counter to the z-direction z. The forces F216, F218 therefore counteract the deflection of the first decoupling elements 216, 218.
- the forces F238, F240 acting at an angle can each be broken down into a horizontal force component F238h, F240h and a vertical force component F238v, F240v.
- the horizontal force components F238h, F240h counteract and in the y-direction y.
- the horizontal force components F238h, F240h are equal and act in opposite directions, so that the horizontal force components F238h, F240h cancel each other out.
- the intermediate frame 202 is therefore force-free in the horizontal direction or along and counter to the y-direction y.
- the vertical force components F238v, F250v act along the z-direction z and thus counter to the forces F216, F218.
- the vertical force components F238v, F240v and the forces F216, F218 are equal.
- the vertical force components F238v, F240v and the forces F216, F218 thus cancel each other out.
- the intermediate frame 202 is therefore always force-free. This freedom from force results in a very low natural frequency.
- the first decoupling elements 216, 218 have a positive rigidity viewed in the z-direction z. This means that the forces F216, F218 counter to a deflection direction of the first decoupling elements 216, 218 hung, against a deflection direction of the intermediate frame 202 ge ⁇ compared to the support frame 102 are oriented.
- the prestressed second decoupling elements 238, 240 have a negative rigidity. This means that the forces F238, F240, in particular the vertical force components F238v, F240v, are oriented in a deflection direction of the intermediate frame 202 with respect to the supporting frame 102. This results in a zero rigidity of the decoupling device 200A in the z-direction z. The same applies to a rotation of the support frame 102, as shown in FIGS. 5 and 6.
- FIG. 10 shows a schematic view of a further embodiment of a system 100C for the projection exposure system 1.
- the system 100C essentially corresponds in terms of its structure to that of the optical system 100A. Therefore, only the differences between the systems 100A, 100C will be discussed below.
- the system 100C includes a decoupling device 200C, the structure of which is essentially the same as that of the decoupling device 200A.
- the system 100C does not include any third decoupling elements 204, 206 in the form of cables with which the sensor frame 104 is suspended from the intermediate frame 202.
- third decoupling elements 254, 256 are provided in the form of tension rods, which are coupled to the intermediate frame 202 via solid joints 258, 260 and to the sensor frame 104 via solid joints 262, 264.
- four third decoupling elements 254, 256 can be provided.
- the third decoupling elements 254, 256 can also be referred to as tension rods.
- the fourth decoupling elements 266, 268, 270, 272 are magnetic elements and can also be referred to as such.
- the fourth decoupling element 266 is attached to the intermediate frame 202 .
- the fourth decoupling element 268 is attached to the sensor frame 104 .
- the fourth decoupling elements ⁇ 266, 268 form a magnetic element pair 274.
- the fourth decoupling elements ⁇ 266, 268 are placed such that their south poles S or north poles N are arranged opposite one another.
- the fourth decoupling element 270 is attached to the intermediate frame 202 ⁇ introduced.
- the fourth decoupling element 272 is attached to a plate-shaped construction ⁇ part 276, which is placed between the support frame 102 and the intermediate frame 104 ⁇ .
- the component 276 is decoupled from the support frame 102 via very soft fifth decoupling elements 278 , 280.
- the fourth decoupling elements 270, 272 form a pair of magnetic elements 282.
- the fourth decoupling elements 270, 272 are placed in such a way that their south poles S or north poles N are arranged opposite one another.
- a parallelogram can be implemented.
- this parallelogram guide is combined with the pairs of magnetic elements 274, 282.
- the magnetic element ⁇ pairs 274, 282 coupling of the intermediate frame 202 to the support frame 102 ⁇ can be prevented.
- the function of the system 100C otherwise corresponds to the function of the system 100A.
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Abstract
Description
Claims
Priority Applications (2)
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CN202280022764.3A CN117043681A (zh) | 2021-02-09 | 2022-02-04 | 系统和投射曝光设备 |
US18/365,479 US20230408934A1 (en) | 2021-02-09 | 2023-08-04 | System and projection exposure apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102021201203.5A DE102021201203A1 (de) | 2021-02-09 | 2021-02-09 | System und projektionsbelichtungsanlage |
DE102021201203.5 | 2021-02-09 |
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US18/365,479 Continuation US20230408934A1 (en) | 2021-02-09 | 2023-08-04 | System and projection exposure apparatus |
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WO2022171538A1 true WO2022171538A1 (de) | 2022-08-18 |
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PCT/EP2022/052742 WO2022171538A1 (de) | 2021-02-09 | 2022-02-04 | System und projektionsbelichtungsanlage |
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US (1) | US20230408934A1 (de) |
CN (1) | CN117043681A (de) |
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WO (1) | WO2022171538A1 (de) |
Citations (8)
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US6573978B1 (en) | 1999-01-26 | 2003-06-03 | Mcguire, Jr. James P. | EUV condenser with non-imaging optics |
US20060132747A1 (en) | 2003-04-17 | 2006-06-22 | Carl Zeiss Smt Ag | Optical element for an illumination system |
DE102008009600A1 (de) | 2008-02-15 | 2009-08-20 | Carl Zeiss Smt Ag | Facettenspiegel zum Einsatz in einer Projektionsbelichtungsanlage für die Mikro-Lithographie |
DE102012220925A1 (de) * | 2012-11-15 | 2013-11-14 | Carl Zeiss Smt Gmbh | Dämpfungsanordnung zur Dissipation von Schwingungsenergie eines Elementes in einem System, insbesondere in einer mikrolithographischen Projektionsbelichtungsanlage |
DE102012221831A1 (de) * | 2012-11-29 | 2014-06-05 | Carl Zeiss Smt Gmbh | Anordnung zur Aktuierung wenigstens eines optischen Elementes in einem optischen System |
DE102015210484A1 (de) * | 2015-06-09 | 2016-06-23 | Carl Zeiss Smt Gmbh | Dämpfungsanordnung zur Dämpfung von Schwingungsbewegungen eines Elementes in einem System |
US20180074303A1 (en) | 2015-04-14 | 2018-03-15 | Carl Zeiss Smt Gmbh | Imaging optical unit and projection exposure unit including same |
DE102017220586A1 (de) | 2017-11-17 | 2019-05-23 | Carl Zeiss Smt Gmbh | Pupillenfacettenspiegel, Beleuchtungsoptik und optisches System für eine Projek-tionsbelichtungsanlage |
-
2021
- 2021-02-09 DE DE102021201203.5A patent/DE102021201203A1/de not_active Ceased
-
2022
- 2022-02-04 WO PCT/EP2022/052742 patent/WO2022171538A1/de active Application Filing
- 2022-02-04 CN CN202280022764.3A patent/CN117043681A/zh active Pending
-
2023
- 2023-08-04 US US18/365,479 patent/US20230408934A1/en active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6573978B1 (en) | 1999-01-26 | 2003-06-03 | Mcguire, Jr. James P. | EUV condenser with non-imaging optics |
US20060132747A1 (en) | 2003-04-17 | 2006-06-22 | Carl Zeiss Smt Ag | Optical element for an illumination system |
EP1614008B1 (de) | 2003-04-17 | 2009-12-02 | Carl Zeiss SMT AG | Optisches element für ein beleuchtungssystem |
DE102008009600A1 (de) | 2008-02-15 | 2009-08-20 | Carl Zeiss Smt Ag | Facettenspiegel zum Einsatz in einer Projektionsbelichtungsanlage für die Mikro-Lithographie |
DE102012220925A1 (de) * | 2012-11-15 | 2013-11-14 | Carl Zeiss Smt Gmbh | Dämpfungsanordnung zur Dissipation von Schwingungsenergie eines Elementes in einem System, insbesondere in einer mikrolithographischen Projektionsbelichtungsanlage |
DE102012221831A1 (de) * | 2012-11-29 | 2014-06-05 | Carl Zeiss Smt Gmbh | Anordnung zur Aktuierung wenigstens eines optischen Elementes in einem optischen System |
US20180074303A1 (en) | 2015-04-14 | 2018-03-15 | Carl Zeiss Smt Gmbh | Imaging optical unit and projection exposure unit including same |
DE102015210484A1 (de) * | 2015-06-09 | 2016-06-23 | Carl Zeiss Smt Gmbh | Dämpfungsanordnung zur Dämpfung von Schwingungsbewegungen eines Elementes in einem System |
DE102017220586A1 (de) | 2017-11-17 | 2019-05-23 | Carl Zeiss Smt Gmbh | Pupillenfacettenspiegel, Beleuchtungsoptik und optisches System für eine Projek-tionsbelichtungsanlage |
Also Published As
Publication number | Publication date |
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CN117043681A (zh) | 2023-11-10 |
DE102021201203A1 (de) | 2022-08-11 |
US20230408934A1 (en) | 2023-12-21 |
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