WO2006016469A1 - 照明光学装置、露光装置、および露光方法 - Google Patents
照明光学装置、露光装置、および露光方法 Download PDFInfo
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- WO2006016469A1 WO2006016469A1 PCT/JP2005/013410 JP2005013410W WO2006016469A1 WO 2006016469 A1 WO2006016469 A1 WO 2006016469A1 JP 2005013410 W JP2005013410 W JP 2005013410W WO 2006016469 A1 WO2006016469 A1 WO 2006016469A1
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- light
- optical
- illumination
- polarization
- illumination optical
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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
- G03F7/708—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
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/288—Filters employing polarising elements, e.g. Lyot or Solc filters
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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
-
- 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
- G03F7/70483—Information management; Active and passive control; Testing; Wafer monitoring, e.g. pattern monitoring
- G03F7/7055—Exposure light control in all parts of the microlithographic apparatus, e.g. pulse length control or light interruption
- G03F7/70566—Polarisation control
Definitions
- Illumination optical apparatus illumination optical apparatus, exposure apparatus, and exposure method
- the present invention relates to an illumination optical apparatus, an exposure apparatus, and an exposure method, and more particularly to an exposure apparatus for manufacturing a microdevice such as a semiconductor element, an imaging element, a liquid crystal display element, and a thin film magnetic head in a lithography process. is there.
- a secondary light source as a substantial surface light source consisting of a large number of light sources through a fly-eye lens as a light source force, an emitted light beam force, and an optical integrator.
- the light flux from the secondary light source (generally, the illumination pupil distribution formed in or near the illumination pupil of the illumination optical device) is restricted through an aperture stop arranged in the vicinity of the rear focal plane of the fly-eye lens. Is incident on the condenser lens
- the light beam collected by the condenser lens illuminates a mask on which a predetermined pattern is formed in a superimposed manner.
- the light transmitted through the mask pattern forms an image on the wafer through the projection optical system.
- the mask pattern is projected and exposed (transferred) onto the wafer. Note that the pattern formed on the mask is highly integrated, and in order to accurately transfer this fine pattern onto the wafer, it is essential to obtain a uniform illuminance distribution on the wafer.
- Japanese Patent No. 3246615 which is an application filed by the present applicant, describes a rear focal plane of a fly-eye lens in order to realize an illumination condition suitable for faithfully transferring a fine pattern in any direction.
- An annular secondary light source is formed in the linearly polarized state where the light flux passing through the annular secondary light source has a polarization direction in the circumferential direction (hereinafter referred to as “circumferential polarization state” for short) )
- circumferential polarization state Disclosed is a technology for setting to be!
- Patent Document 1 Japanese Patent No. 3246615
- the present invention provides an illumination optical device capable of illuminating a surface to be irradiated with light in a desired polarization state or non-polarization state while suppressing a change in the polarization state of light in an optical path. With the goal.
- the present invention uses an illumination optical device that illuminates a mask as an irradiated surface with light in a desired polarization state or non-polarization state, and based on a desired illumination condition according to a mask pattern.
- An object of the present invention is to provide an exposure apparatus and an exposure method capable of faithfully transferring a fine pattern onto a photosensitive substrate.
- 0.9 is disposed in the optical path between the light source that supplies light having a polarization degree of 9 or more and the irradiated surface, and sets the polarization state of the light reaching the irradiated surface to a predetermined polarization state.
- a holding member for supporting three points on one optical surface side of at least one light transmitting member constituting an optical system in the optical path between the light source and the irradiated surface in three regions.
- An illumination optical device is provided.
- an exposure apparatus comprising the illumination optical device according to the first aspect for illuminating a mask, and exposing the pattern of the mask onto a photosensitive substrate. To do.
- the third aspect of the present invention includes an illumination step of illuminating a mask using the illumination optical device of the first aspect, and an exposure step of exposing the pattern of the mask onto a photosensitive substrate.
- An exposure method is provided.
- a required light transmitting member (generally at least one light transmitting member) among the light transmitting members arranged in the optical path is substantially opposed. Three points are supported by three sides. In this case, only a stress distribution concentrated in the support region of the light transmission member is generated, and no substantial stress distribution is generated in the effective region of the light transmission member. As a result, almost no birefringence due to the stress distribution occurs, and hence the polarization state of the light passing therethrough hardly changes due to the birefringence.
- the illumination optical device of the present invention it is possible to illuminate the irradiated surface with light in a desired polarization state or non-polarization state while suppressing a change in the polarization state of light in the optical path. . Therefore, in the exposure apparatus and the exposure method of the present invention, the illumination optical device that illuminates the mask as the irradiated surface with light in a desired polarization state or non-polarization state is used to achieve a desired illumination condition according to the mask pattern. On the basis of this, a fine pattern can be loyally transferred onto a photosensitive substrate, and as a result, a good device can be manufactured.
- FIG. 1 is a drawing schematically showing a configuration of an exposure apparatus that works on an embodiment of the present invention.
- FIG. 2 is a diagram schematically showing the configuration of the polarization conversion element in FIG. 1.
- FIG. 3 is a diagram for explaining the optical rotation of quartz.
- FIG. 4 is a diagram schematically showing a ring-shaped secondary light source set in a circumferential polarization state by the action of a polarization conversion element.
- FIG. 5 is a diagram schematically showing the force acting from the outside on the light transmitting member and the stress distribution generated on the light transmitting member in the prior art.
- FIG. 6 is a diagram schematically showing a force acting on the light transmission member from the outside and a stress distribution generated in the light transmission member in the present embodiment.
- FIG. 7 is a diagram schematically showing a configuration of a holding member that supports a light transmitting member at three points on both sides of a force in the present embodiment.
- FIG. 8 is a diagram schematically showing an annular secondary light source that is set in a radially polarized state by the action of a polarization conversion element.
- FIG. 9 is a flowchart of a method for obtaining a semiconductor device as a micro device.
- FIG. 10 is a flowchart of a method for obtaining a liquid crystal display element as a micro device.
- FIG. 1 is a drawing schematically showing a configuration of an exposure apparatus according to an embodiment of the present invention.
- Fig. 1 the Z-axis along the normal direction of wafer W, which is the photosensitive substrate, the Y-axis in the direction parallel to the plane of Fig. 1 in the plane of wafer W, and Fig. 1 in the plane of wafer W.
- the X axis is set in the direction perpendicular to the page.
- the exposure apparatus of the present embodiment includes a light source 1 for supplying exposure light (illumination light).
- the light source 1 for example, a KrF excimer laser light source that supplies light with a wavelength of 248 nm, an ArF excimer laser light source that supplies light with a wavelength of 193 nm, or the like can be used.
- a substantially parallel light beam emitted from the light source 1 along the Z direction has a rectangular cross section extending along the X direction, and is incident on the beam expander 2 composed of a pair of lenses 2a and 2b.
- Each lens 2a and 2b has a negative refracting power and a positive refracting power in the plane of FIG. 1 (in the YZ plane), respectively. Therefore, the light beam incident on the beam expander 2 is expanded in the plane of FIG. 1 and shaped into a light beam having a predetermined rectangular cross section.
- a substantially parallel light beam via a beam expander 2 as a shaping optical system is deflected in the Y direction by a bending mirror 3, and then 1Z4 wavelength plate 4a, 1Z2 wavelength plate 4b, and a depolarizer (non-polarizing element).
- the light enters the focal lens 6 through 4c and the diffractive optical element 5 for annular illumination.
- the 1Z4 wavelength plate 4a, the 1Z2 wavelength plate 4b, and the depolarizer 4c constitute a polarization state switching unit 4 as described later.
- the focal lens 6 is The front focal position of the lens group 6a and the position of the diffractive optical element 5 are substantially coincident with each other, and the rear focal position of the rear lens group 6b is substantially coincident with the position of the predetermined plane 7 indicated by a broken line in the figure.
- the afocal system afocal optical system.
- a diffractive optical element is configured by forming a step having a pitch on the substrate that is about the wavelength of exposure light (illumination light), and has a function of diffracting an incident beam to a desired angle.
- the diffractive optical element 5 for annular illumination forms an annular light intensity distribution in the far field (or Fraunhofer diffraction region) when a parallel light flux having a rectangular cross section is incident.
- the substantially parallel light beam incident on the diffractive optical element 5 as the light beam conversion element forms a ring-shaped light intensity distribution on the pupil plane of the focal lens 6, and then has a ring-shaped angular distribution with a focal lens. Ejected from 6.
- the conical axicon system 8 is arranged on the pupil plane or in the vicinity thereof. The operation will be described later. In the following, for the sake of simplicity, the basic configuration and operation will be described ignoring the operation of the conical axicon system 8.
- the light beam through the afocal lens 6 enters a micro fly's eye lens (or fly eye lens) 11 as an optical integrator through a zoom lens 9 for variable ⁇ value and a polarization conversion element 10. To do.
- the configuration and operation of the polarization conversion element 10 will be described later.
- the micro fly's eye lens 11 is an optical element composed of a large number of microlenses having positive refractive powers arranged vertically and horizontally and densely.
- a micro fly's eye lens is configured by, for example, performing etching on a plane parallel plate to form a micro lens group.
- each micro lens constituting the micro fly's eye lens is smaller than each lens element constituting the fly eye lens. Further, unlike a fly-eye lens composed of lens elements isolated from each other, a micro fly-eye lens is integrally formed without being isolated from each other.
- the micro fly's eye lens is the same wavefront division type optical integrator as the fly's eye lens in that lens elements having positive refractive power are arranged vertically and horizontally. The position of the predetermined surface 7 is disposed in the vicinity of the front focal position of the zoom lens 9, and the incident surface of the micro fly lens 11 is disposed in the vicinity of the rear focal position of the zoom lens 9.
- the zoom lens 9 arranges the predetermined plane 7 and the incident surface of the micro fly's eye lens 11 substantially in a Fourier transform relationship, and as a result, the pupil plane of the focal lens 6 and the incident of the micro fly's eye lens 11.
- the surface is optically substantially conjugate.
- an annular illumination field centered on the optical axis AX is formed in the same manner as the pupil surface of the focal lens 6.
- the overall shape of the ring-shaped illumination field changes in a similar manner depending on the focal length of the zoom lens 9.
- the microlenses constituting the mic fly eye lens 11 are similar to the shape of the illumination field to be formed on the mask M (the shape of the exposure area to be formed on the wafer W). It has a rectangular cross section.
- the light beam incident on the micro fly's eye lens 11 is two-dimensionally divided by a large number of microlenses, and the illumination formed by the incident light beam on the rear focal plane or in the vicinity thereof (and thus the illumination pupil).
- a secondary light source having substantially the same light intensity distribution as the field that is, a secondary light source such as a ring-shaped substantial surface light source centered on the optical axis AX is formed.
- the light beam from the secondary light source formed at or near the rear focal plane of the micro flyar lens 11 passes through the beam splitter 12a and the condenser optical system 13, and then the mask M or wafer W as the irradiated surface.
- the mask blind 14 placed at an optically nearly conjugate position is illuminated in a superimposed manner.
- a rectangular illumination field corresponding to the shape and focal length of each microlens constituting the micro fly's eye lens 11 is formed on the mask blind 14 as an illumination field stop.
- the light beam that has passed through the rectangular opening (light transmitting portion) of the mask blind 14 receives the light condensing action of the imaging optical system 15 and then illuminates the mask M on which a predetermined pattern is formed in a superimposed manner.
- the imaging optical system 15 guides the light through the mask brand 14 disposed at a position optically conjugate with the mask M or the wafer W as the irradiated surface to the mask M, and the rectangular shape of the mask blind 14 An image of the opening is formed on the mask M.
- the light beam that has passed through the pattern of the mask M forms an image of the mask pattern on the wafer W, which is a photosensitive substrate, via the projection optical system PL.
- the optical axis AX of the projection optical system PL By performing batch exposure or scan exposure while driving and controlling the wafer w two-dimensionally in an orthogonal plane (XY plane), the pattern of the mask M is sequentially exposed in each exposure area of the wafer W.
- the 1Z4 wavelength plate 4a is configured such that the crystal optical axis is rotatable about the optical axis AX, and converts incident elliptically polarized light into linearly polarized light.
- the 1Z2 wave plate 4b is configured such that the crystal optical axis is rotatable about the optical axis AX, and changes the polarization plane of the incident linearly polarized light.
- the depolarizer 4c is composed of a wedge-shaped quartz prism having a complementary shape and a wedge-shaped quartz prism. The quartz prism and the quartz prism are configured so as to be freely removable with respect to the illumination optical path as an integral prism thread and solid.
- the light emitted by these light source powers typically has a polarization degree of 95% or more, and the 1Z4 wavelength plate 4a Nearly linearly polarized light is incident.
- the polarization plane of the incident linearly polarized light coincides with the P-polarization plane or the S-polarization plane. Otherwise, linearly polarized light changes to elliptically polarized light due to total reflection at the right angle prism.
- the polarization state switching unit 4 for example, even if elliptically polarized light is incident due to total reflection by a right-angle prism, linearly polarized light converted by the action of the 1Z4 wavelength plate 4a is converted to the 1Z2 wavelength plate 4b. Is incident on.
- the crystal optical axis of 1Z2 wave plate 4b is set to make an angle of 0 ° or 90 ° with respect to the plane of polarization of linearly polarized light that is incident, linearly polarized light that is incident on 1Z2 wave plate 4b is polarized Passes without change.
- the crystal optical axis of the 1Z2 wave plate 4b is set to form an angle of 45 degrees with respect to the plane of polarization of the linearly polarized light incident thereon, the linearly polarized light incident on the 1Z2 wave plate 4b is polarized. It is converted into linearly polarized light whose surface changes by 90 degrees.
- the crystal optic axis of the quartz prism of the depolarizer 4c is set to make an angle of 45 degrees with respect to the plane of polarization of the linearly polarized light that is incident, the linearly polarized light incident on the quartz prism is unpolarized light. Converted to (unpolarized).
- the crystal optical axis of the crystal prism is configured to make an angle of 45 degrees with respect to the plane of polarization of the linearly polarized light that is incident.
- the crystal optical axis of the crystal prism is set to make an angle of 0 or 90 degrees with respect to the plane of polarization of the linearly polarized light that is incident, the plane of polarization of the linearly polarized light incident on the crystal prism changes. It passes without any changes.
- the depolarizer 4c When the depolarizer 4c is positioned in the illumination optical path, if it is set to make an angle of 0 or 90 degrees with respect to the polarization plane (polarization direction) of the Z-direction polarization incident on the crystal optical axis of the 1Z2 wave plate 4b, 1Z2
- the Z-polarized light that has entered the wave plate 4b passes through the Z-polarized light without changing the plane of polarization and enters the quartz prism of the depolarizer 4c.
- the crystal optical axis of the quartz prism is set to make an angle of 45 degrees with respect to the polarization plane of the incident Z-direction polarized light, so that the Z-direction polarized light incident on the quartz prism is converted to unpolarized light. Is done.
- the light depolarized through the quartz prism enters the diffractive optical element 5 in a non-polarized state via the quartz prism as a compensator for compensating the traveling direction of the light.
- the crystal optical axis of the 1Z2 wave plate 4b is set to make an angle of 45 degrees with respect to the polarization plane of the Z-direction polarization incident on the 1Z2 wave plate 4b, the Z-direction polarization light incident on the 1Z2 wave plate 4b It changes by 0 degrees and becomes linearly polarized light (hereinafter referred to as “X-direction polarized light”) having a polarization direction (electric field direction) in the X direction in FIG.
- the crystal optical axis of the quartz prism is set to make an angle of 45 degrees with respect to the polarization plane of the incident X-direction polarized light, so that the X-polarized light incident on the quartz prism is converted into unpolarized light.
- the light is converted and enters the diffractive optical element 5 through the quartz prism in an unpolarized state.
- the crystal optic axis of the 1Z2 wave plate 4b is made to have an angle of 0 degree or 90 degrees with respect to the polarization plane of the Z-direction polarized light incident thereon.
- the Z-direction polarized light incident on the 1Z2 wave plate 4b passes through the Z-direction polarized light without changing the polarization plane, and enters the diffractive optical element 5 in the Z-direction polarization state.
- the polarization plane of the Z-direction polarization incident on the Z2 wavelength plate 4b is only 90 degrees. Changes to X-polarized light and enters the diffractive optical element 5 in the X-polarized state.
- the polarization state switching unit 4 As described above, in the polarization state switching unit 4, light in the non-polarized state can be incident on the diffractive optical element 5 by inserting the depolarizer 4 c into the illumination optical path and determining the position. In addition, the depolarizer 4c is retracted and the crystal optical axis of the 1Z2 wave plate 4b is set so as to make an angle of 0 degree or 90 degrees with respect to the polarization plane of the Z direction polarization. The light in the state can be incident on the diffractive optical element 5. Further, the depolarizer 4c is retracted from the illumination optical path, and the crystal optical axis of the 1Z2 wave plate 4b is set to be 45 degrees with respect to the polarization plane of the Z-direction polarization. Can be incident on the diffractive optical element 5.
- the polarization state of the incident light to the diffractive optical element 5 is obtained by the action of the polarization state switching unit including the 1Z4 wavelength plate 4a, the 1Z2 wavelength plate 4b, and the depolarizer 4c. (And thus the polarization state of the light that illuminates the mask M and the wafer W) can be switched between the linear polarization state and the non-polarization state. And X polarization).
- both the 1Z2 wavelength plate 4b and the depolarizer 4c are retracted from the illumination optical path, and the crystal optical axis of the 1Z4 wavelength plate 4a is made to have a predetermined angle with respect to the incident elliptically polarized light.
- the polarization state of the light incident on the diffractive optical element 5 is set to a linear polarization state having a polarization direction in an arbitrary direction by the action of the 1Z2 wavelength plate 4b.
- the conical axicon system 8 includes, in order, the light source side force, the first prism member 8a having a plane facing the light source side and a concave conical refracting surface facing the mask side, and a plane facing the mask side. And a second prism member 8b having a convex conical refracting surface facing the light source.
- the concave conical refracting surface of the first prism member 8a and the convex conical refracting surface of the second prism member 8b are complementarily formed so as to be in contact with each other.
- the first prism member 8 At least one of a and the second prism member 8b is configured to be movable along the optical axis AX.
- the concave conical refracting surface of the first prism member 8a and the convex conical shape of the second prism member 8b are configured. The distance from the refracting surface is variable.
- the conical axicon system 8 functions as a plane-parallel plate.
- the concave conical refracting surface of the first prism member 8a and the convex conical bending surface of the second prism member 8b are in contact with each other, the conical axicon system 8 functions as a plane-parallel plate.
- the width of the annular secondary light source (the outer diameter of the annular secondary light source and The outer diameter (inner diameter) of the annular secondary light source changes while keeping the difference 1Z2) from the inner diameter constant. That is, the annular ratio (inner diameter Z outer diameter) and size (outer diameter) of the annular secondary light source change.
- the zoom lens 9 has a function of enlarging or reducing the overall shape of the annular secondary light source in a similar manner. For example, by expanding the focal length of the zoom lens 9 to a predetermined value with the minimum value force, the entire shape of the annular secondary light source is similarly enlarged. In other words, due to the action of the zoom lens 9, both the width and size (outer diameter) of the annular zone of the annular secondary light source change without change. In this way, the annular ratio and size (outer diameter) of the annular secondary light source can be controlled by the action of the conical axicon system 8 and the zoom lens 9.
- the polarization monitor 12 includes a first beam splitter 12a disposed in the optical path between the micro fly's eye lens 11 and the condenser optical system 13, and is incident on the first beam splitter 12a. It has a function of detecting the polarization state of light.
- the control unit confirms that the illumination light to the mask M (and thus the wafer W) is in the desired polarization state or non-polarization state based on the detection result of the polarization monitor 12, the polarization state
- the state of the illumination light to the mask M can be adjusted to a desired polarization state or a non-polarization state.
- quadrupole illumination can be performed by setting a diffractive optical element for quadrupole illumination (not shown) in the illumination optical path instead of the diffractive optical element 5 for annular illumination.
- a diffractive optical element for quadrupole illumination has a far-off structure when a parallel light beam having a rectangular cross section is incident. It has the function of forming a quadrupole light intensity distribution in the field. Therefore, the light beam that has passed through the diffractive optical element for quadrupole illumination has a quadrupole illumination field on the entrance surface of the micro fly's eye lens 11 that also has, for example, four circular illumination fields centered on the optical axis AX. Form.
- the same quadrupole secondary light source as the illumination field formed on the incident surface is also formed at or near the rear focal plane of the micro fly's eye lens 11.
- the diffractive optical element for circular illumination has a function of forming a circular light intensity distribution in the far field when a parallel light beam having a rectangular cross section is incident. Therefore, the light beam that has passed through the diffractive optical element for circular illumination forms, for example, a circular illumination field around the optical axis AX on the incident surface of the micro fly's eye lens 11. As a result, a secondary light source having the same circular shape as the illumination field formed on the incident surface is also formed at or near the rear focal plane of the micro fly's eye 11.
- diffractive optical element 5 for annular illumination instead of the diffractive optical element 5 for annular illumination, other diffractive optical elements (not shown) for multi-pole illumination are set in the illumination optical path, so that various multi-pole illuminations (2 Polar lighting, 8-pole lighting, etc.).
- various forms of modified illumination can be performed by setting a diffractive optical element (not shown) having appropriate characteristics in the illumination optical path instead of the diffractive optical element 5 for annular illumination. it can.
- FIG. 2 is a diagram schematically showing a configuration of the polarization conversion element of FIG.
- FIG. 3 is a diagram for explaining the optical rotation of quartz.
- FIG. 4 is a diagram schematically showing an annular secondary light source that is set in a circumferential polarization state by the action of the polarization conversion element.
- the polarization conversion element 10 according to the present embodiment is disposed immediately before the micro fly's eye lens 11, that is, in the vicinity of the pupil of the illumination optical device (1 to PL) or in the vicinity thereof. Therefore, in the case of annular illumination, a light beam having a substantially annular cross section around the optical axis AX is incident on the polarization conversion element 10.
- the polarization conversion element 10 as a whole has a ring-shaped effective area centered on the optical axis AX, and the ring-shaped effective area is a circumferential direction centered on the optical axis AX. It consists of eight fan-shaped basic elements that are equally divided into two! These eight basic elements The pair of basic elements facing each other across the optical axis AX have the same characteristics. In other words, the eight basic elements contain four types of basic elements 10A to 10: L0D, each having a different thickness (length in the optical axis direction) along the light transmission direction (Y direction). .
- the thickness of the fourth basic element 10D where the thickness of the first basic element 10A is the largest is the thickness of the second basic element 10B where the thickness of the fourth basic element 10D is the smallest. Is also set large.
- one surface (for example, the entrance surface) of the polarization conversion element 10 is planar, but the other surface (for example, the exit surface) is uneven due to the difference in thickness of each of the basic elements 10A to L0D. Yes.
- both surfaces (incident surface and exit surface) of the polarization conversion element 10 can be formed in an uneven shape.
- each basic element 10A ⁇ : LOD is composed of quartz that is an optical material having optical rotation
- the crystal optical axis of each basic element 10A ⁇ : LOD substantially coincides with the optical axis AX.
- a parallel flat plate-like optical member 100 made of quartz having a thickness d is arranged so that its crystal optical axis and optical axis AX coincide.
- the incident linearly polarized light is emitted in a state in which the polarization direction is rotated by about ⁇ around the optical axis AX.
- the rotation angle (rotation angle) ⁇ in the polarization direction due to the optical rotation of the optical member 100 is expressed by the following equation (1) according to the thickness d of the optical member 100 and the optical rotation power p of the crystal. .
- the optical rotatory power p of quartz has a wavelength dependency (a property in which the value of optical rotatory power varies depending on the wavelength of light used: optical rotatory dispersion), and specifically, it tends to increase as the wavelength of light used decreases. is there.
- the optical rotation power / 0 of quartz for light having a wavelength of 250.3 nm is 153.9 ° Zmm.
- the first basic element 10A when linearly polarized light having a polarization direction in the Z direction is incident, the first basic element 10A is polarized in the direction obtained by rotating the Z direction by +180 degrees around the Y axis, that is, in the Z direction.
- the thickness dA is set to emit linearly polarized light having a direction. Therefore, in this case, the annular secondary light source 31 shown in FIG. 4 passes through the pair of arc-shaped regions 31 A formed by the light beam that has undergone the optical rotation of the pair of first basic elements 10 A. Luminous flux deviation The light direction is the z direction.
- the Z direction is rotated by +135 degrees around the Y axis, that is, the Z direction is around the Y axis.
- the thickness dB is set so that linearly polarized light having a polarization direction in the direction of rotation is emitted. Therefore, in this case, in the annular secondary light source 31 shown in FIG. 4, the polarization direction of the light beam passing through the pair of arcuate regions 31B formed by the light beam subjected to the optical rotation of the pair of second basic elements 10B is The Z direction is rotated by -45 degrees around the Y axis.
- the third basic element 10C is a linearly polarized light having a polarization direction in the X direction, that is, a direction obtained by rotating the Z direction around the Y axis by +90 degrees.
- the thickness dC is set so as to emit light. Therefore, in this case, of the annular secondary light source 31 shown in FIG. 4, the polarization of the light beam passing through the pair of arcuate regions 31C formed by the light bundle subjected to the optical rotation of the pair of third basic elements 10C.
- the direction is the X direction.
- the fourth basic element 10D When linearly polarized light having a polarization direction in the Z direction is incident, the fourth basic element 10D emits linearly polarized light having a polarization direction in the direction obtained by rotating the Z direction by +45 degrees around the Y axis. Thickness dD is set to project. Therefore, in this case, in the annular secondary light source 31 shown in FIG. 4, the polarization direction of the light beam passing through the pair of arcuate regions 31D formed by the light beam subjected to the optical rotation of the pair of fourth basic elements 10D is The Z direction is rotated +45 degrees around the Y axis.
- the polarization conversion element 10 can be obtained by combining eight separately formed basic elements, or by forming the required concavo-convex shape (step) on a plane-parallel crystal substrate.
- the polarization conversion element 10 can also be obtained.
- the effective area of the polarization conversion element 10 has a radial size of 1Z3 or more and an optical rotation.
- a circular central region 10E having no property is provided.
- the central region 10E may be formed of an optical material that does not have optical rotation, such as quartz, or may simply be a circular opening.
- the central region 10E is not an essential element for the polarization conversion element 10.
- the depolarizer 4 of the polarization state switching unit 4 in the circumferential polarization annular illumination (modified illumination in which the light beam passing through the annular secondary light source is set in the circumferential polarization state).
- the illumination optical path force By retracting c the illumination optical path force and adjusting the angle position of the crystal optical axis of the 1Z2 wave plate 4b around the optical axis to make the Z direction polarized light incident on the diffractive optical element 5 for annular illumination, the Z direction Then, linearly polarized light having a polarization direction is incident on the polarization conversion element 10.
- annular secondary light source (annular illumination pupil distribution) 31 is formed at or near the rear focal plane of the micro fly's eye lens 11, as shown in FIG.
- the light beam passing through the secondary light source 31 is set in the circumferential polarization state.
- the light beams passing through the arc-shaped regions 31A to 31D constituting the annular light source 31 have the optical axis AX at the center position along the circumferential direction of each of the arc-shaped regions 31A to 31D.
- a linear polarization state having a polarization direction substantially coincident with the tangential direction of the center circle is obtained.
- linearly polarized light having a polarization direction in a substantially single direction light in a circumferential polarization state having a polarization direction in a substantially circumferential direction, or a diameter having a polarization direction in a substantially radial direction.
- a ring-shaped secondary light source 31 in a circumferential polarization state that substantially does not cause a loss of light amount can be formed.
- the light irradiated on the wafer W as the final irradiated surface becomes a polarization state mainly composed of S polarization.
- S-polarized light is linearly polarized light having a polarization direction in a direction perpendicular to the incident surface (polarized light having an electric vector oscillating in a direction perpendicular to the incident surface).
- the incident surface is defined as a surface that includes the normal of the boundary surface at that point and the incident direction of light when the light reaches the boundary surface of the medium (irradiated surface: the surface of the wafer W).
- circumferentially polarized annular illumination can improve the optical performance (such as depth of focus) of the projection optical system, and can be used on a wafer (photosensitive substrate)!
- light that is incident on the wafer W is mainly composed of S-polarized light even in illumination based on a multipolar illumination pupil distribution in a circumferentially polarized state, without being limited to annular illumination.
- a diffractive optical element for multipole illumination (2-pole illumination, 4-pole illumination, 8-pole illumination, etc.) is set as the illumination optical path, and the depolarizer 4c is illuminated.
- Polarization is performed in the Z direction by retracting the optical path force and adjusting the angular position of the 1Z2 wave plate 4b around the optical axis of the crystal optical axis so that it is incident on the diffractive optical element for multipole illumination.
- Linearly polarized light having a direction is incident on the polarization conversion element 10.
- the light incident on the wafer W is mainly S-polarized light. It becomes a polarization state as a component, and a high-contrast mask pattern image can be obtained on the wafer W.
- polarization state switching section (4: 4a, 4b, 4c) and polarization conversion element 10
- those proposed in International Application No. PCTZJPZ2005Z000407 can be applied.
- a diffractive optical element as a light beam shape conversion element for forming a predetermined light intensity distribution such as a zonal shape, a circular shape, or a multipolar shape at or near the pupil plane of an illumination optical device, it is published internationally.
- the light flux conversion element and the polarization conversion element disclosed in the pamphlet of WO2005Z050718 may be applied. In this case, it is preferable to remove the existing polarization conversion element 10 from the optical path, but it can be applied in combination with the polarization conversion element 10.
- the illumination optical apparatus (1 to 15) of the present embodiment that illuminates the mask M as the irradiation surface based on the light having the polarization degree of 0.9 or more supplied from the light source 1.
- the light transmissive member disposed in the illumination light path is generally held in a form that is sandwiched from both sides by a cylindrical spacing ring in the lens barrel.
- the light transmission member is continuously supported along an annular region centered on the optical axis.
- the light transmitting member is not continuously supported along the annular region due to the manufacturing error of the end face of the spacing ring (surface that contacts the light transmitting member).
- it is supported by a plurality of point regions (especially intended regions).
- one optical surface side of the light transmitting member 50 is supported at three points by the three regions 51a to 51c, and the light transmitting member 50 is used.
- the other optical surface side is supported at three points by three regions 52a to 52c substantially opposite to the three regions 51a to 51c.
- the position of the three forces F3 acting on the one optical surface side of the light transmitting member 50 from the outside and the position of the three forces F4 acting on the other optical surface side of the light transmitting member 50 from the outside are provided. Almost matches.
- FIG. 7 is a diagram schematically showing a configuration of a holding member that supports the light transmission member from three sides from both sides in the present embodiment.
- the holding member of this embodiment is a light transmitting member 60 to be held.
- a first spacing ring 71 having three support portions 71a to 71c for supporting one of the optical surfaces (upper side in FIG. 7) at three points in three regions (corresponding to 51a to 51c in FIG. 6);
- a second interval having three support portions 72a to 72c for supporting the other optical surface side (lower side in FIG. 7) of the transmission member 60 in three areas (corresponding to 52a to 52c in FIG. 6).
- Ring 72 is a diagram schematically showing a configuration of a holding member that supports the light transmission member from three sides from both sides in the present embodiment.
- the holding member of this embodiment is a light transmitting member 60 to be held.
- a first spacing ring 71 having three support portions 71a to 71c for supporting one of the optical surfaces (upper side in FIG. 7) at three points
- the three support portions 71a to 71c of the first interval ring 71 are provided at substantially equal angular intervals, and the three support portions 72a to 72c of the second interval ring 72 are also provided at substantially equal angular intervals.
- the first spacing ring 71 and the second spacing ring 72 are such that the support portion 71a and the support portion 72a are substantially opposed to each other, and consequently the support portions 71b and 71c and the support portions 72b and 72c are substantially opposite to each other. So that it is positioned. In this way, the light transmitting member 60 is supported by the holding force (71, 72) at three points on both sides in almost three regions facing each other.
- a required light transmitting member (generally at least one light transmitting member) among the light transmitting members disposed in the optical path. ) Is supported at three points from both sides in almost opposite areas. In this case, only a stress distribution concentrated in the supporting region of the light transmitting member is generated, and no substantial stress distribution is generated in the effective region of the light transmitting member. As a result, almost no birefringence due to the stress distribution occurs, and as a result, the polarization state of the light passing therethrough hardly changes due to the birefringence.
- the change of the polarization state of light in the optical path is satisfactorily suppressed, and the surface to be irradiated is irradiated with light in a desired polarization state or non-polarization state.
- All masks M and thus wafer W) can be illuminated. Therefore, in the exposure apparatus of the present embodiment, the illumination optical apparatus (1 to 15) that illuminates the mask M as the irradiated surface with light in a desired polarization state or non-polarization state, and a desired pattern according to the mask pattern.
- a fine pattern can be faithfully transferred onto a wafer (photosensitive substrate) W based on illumination conditions.
- the light transmitting member disposed in the optical path between the micro fly's eye lens 11 as the optical integrator and the mask M as the irradiated surface is easily increased in size in the radial direction.
- the polarization state of the light passing therethrough is likely to change due to the birefringence. Therefore, the change in the polarization state of light in the optical path
- a relatively large light transmitting member in the radial direction is used. It is preferable that three points are supported by the holding member.
- the average birefringence in the effective region of the light transmitting member in the state supported by the holding member at three points is preferably 2 nmZcm or less.
- the average birefringence is not more than InmZcm.
- each of the support portions (71a to 71c, 71a, 71c, 71b, 71b, 71b, 71b, 71b, 71c, 71b, 71c 72a to 72c) are preferably movable or flexible in the radial direction of a circle centering on the optical axis.
- Japanese Patent Laid-Open No. 2002-131605 can be referred to for an example of mechanically imparting radial mobility to the support end of the support portion.
- each support portion may be provided so that stress is not easily generated in the radial direction of the light transmitting member, and each support portion can be configured to be rotatable with respect to the frame body.
- each support portion can be configured to be rotatable with respect to the frame (lens cell).
- the light transmitting member 61 adjacent to the light transmitting member 60 is arranged at three points from both sides in three regions that are substantially opposed by the holding members (72, 73).
- the three-point support position of the light transmitting member 60 by the holding member (71, 72) and the three-point support position of the light transmitting member 61 by the holding member (72, 73) may be displaced around the optical axis. It is preferable. With this configuration, it is possible to disperse the influence of the three-point support of a plurality of light transmitting members in the angular direction around the optical axis, and thus it is possible to satisfactorily suppress changes in the polarization state of light in the optical path. . This point is generally the same for a plurality of light transmitting members without being limited between adjacent light transmitting members.
- the light transmission member is supported by the holding member at three points on both sides in three regions substantially facing each other.
- it is not limited to this.
- a modification in which only the optical surface side of the light transmitting member is supported at three points in three regions by using the brazing method disclosed in Japanese Utility Model Publication No. 11-228192 is also possible.
- a linearly polarized light having a polarization direction in the X direction is incident on the polarization conversion element 10, whereby the light beam that passes through the annular secondary light source 32 as shown in FIG. Can be set to a radially polarized state, and radially polarized annular illumination (modified illumination in which the light beam passing through the annular secondary light source is set to the radially polarized state) can be performed.
- Radial direction In the polarization state the light beams passing through the arc-shaped regions 32A to 32D constituting the annular secondary light source 32 are at the center positions along the circumferential direction of the respective arc-shaped regions 32A to 32D. It becomes a linearly polarized state having a polarization direction almost coincident with the radius method of the circle centered on the optical axis AX.
- the light irradiated on the wafer W as the final irradiated surface changes to a polarized state mainly composed of P-polarized light.
- P-polarized light is linearly polarized light having a polarization direction in a direction parallel to the incident surface defined as described above (polarized light whose electric vector vibrates in a direction parallel to the incident surface). It is.
- the radial polarization annular illumination it is possible to obtain a good mask pattern on the wafer (photosensitive substrate) while suppressing the light reflectance of the resist applied to the wafers W and W to be small.
- the light beam incident on the polarization conversion element 10 is switched between the linear polarization state having the polarization direction in the Z direction and the linear polarization state having the polarization direction in the X direction.
- the circumferential polarization annular illumination and the radial polarization annular illumination are realized.
- the present invention is not limited to this.
- the polarization conversion element 10 is connected to the first state and the optical axis AX shown in FIG. By switching between the second state rotated by 90 degrees around, it is also possible to realize circumferential polarization annular illumination and radial polarization illumination.
- the polarization conversion element 10 is disposed immediately before the micro fly's eye lens 11.
- the present invention is not limited to this, for example, the pupil of the projection optical system PL or its vicinity, the pupil of the imaging optical system 15 or its vicinity, or immediately before the conical axicon system 8 (the pupil of the afocal lens 6 or the vicinity thereof). Place the polarization conversion element 10 in the vicinity) Say it with a word.
- the polarization conversion element 10 is arranged in the projection optical system PL or the imaging optical system 15, the required effective diameter of the polarization conversion element 10 tends to be large, so that a high-quality and large quartz substrate can be obtained. Considering the current situation where is difficult, it is not preferable. Also, if the polarization conversion element 10 is placed immediately before the conical axicon system 8, the required effective diameter of the polarization conversion element 10 can be kept small. During this period, the distance to the wafer W, which is the final irradiated surface, increases. This is not preferable because an element that changes the polarization state such as an antireflection coating of a lens or a reflection film of a mirror is likely to be interposed in the optical path.
- the difference in reflectance easily occurs depending on the polarization state (P-polarized light and S-polarized light) and the incident angle, and the light polarization state is likely to change.
- At least one surface (for example, the exit surface) of the polarization conversion element 10 is formed in an uneven shape, and as a result, the polarization conversion element 10 changes discretely (discontinuously) in the circumferential direction. Thickness distribution.
- at least one surface (e.g., exit surface) of the polarization conversion element 10 so that the polarization conversion element 10 has a thickness distribution that changes substantially discontinuously in the circumferential direction. ) Can be formed into a curved surface.
- the polarization conversion element 10 is configured by eight fan-shaped basic elements corresponding to eight divisions of the ring-shaped effective region.
- the present invention is not limited to this.
- it corresponds to eight sector-shaped basic elements corresponding to eight divisions of a circular effective area, or four divisions of a circular or annular effective area 4
- the polarization conversion element 10 can also be configured by one fan-shaped basic element or by 16 fan-shaped basic elements corresponding to 16 divisions of a circular or ring-shaped effective area.
- various modifications can be made to the shape of the effective area of the polarization conversion element 10 and the number of divisions of the effective area (number of basic elements).
- each basic element 10A ⁇ : LOD (and thus the polarization conversion element 10) is formed using quartz.
- each basic element can also be formed using other suitable optical materials having optical rotation without being limited thereto.
- the polarization conversion element 10 is fixedly provided with respect to the illumination optical path. However, the polarization conversion element 10 may be provided so as to be detachable from the illumination optical path.
- S-polarized light and annular illumination for wafer W are combined.
- S-polarized light for wafer W and W are combined with multipolar illumination such as dipole and quadrupole, and circular illumination. May be combined.
- the illumination conditions for the mask M and the imaging conditions for the wafer W are automatically set according to the pattern type of the mask M, for example. Can do.
- the optical system illumination optical system or projection optical system
- the polarization direction may change due to this polarization aberration.
- the direction of the polarization plane rotated by the polarization conversion element 10 may be set in consideration of the influence of the polarization aberration of these optical systems.
- a reflecting member is disposed in the optical path on the wafer W side with respect to the polarization conversion element 10
- a phase difference may occur for each polarization direction reflected by the reflecting member.
- the direction of the polarization plane rotated by the polarization conversion element 10 may be set in consideration of the phase difference of the light beam caused by the polarization characteristics of the reflection surface. Further, adjustment may be performed using each of the wave plates 4a and 4b so that a desired polarization state is obtained on the incident surface of the polarization conversion element 10.
- An internal reflection type rod integrator as disclosed in Japanese Patent No. 1 may be applied.
- one of at least one light transmitting member (5, 6, 11, 13R, 16, 18) of the optical members in the optical path between the polarization control member 4 as the polarization setting unit and the irradiated surface It is preferable to support three points on the optical surface side in three regions.
- a substantially uniform illumination region formed on the exit surface of the rod-type integrator.
- a polarization selection member is disposed in the vicinity of the device. In such a case, one optical surface side of at least one light transmitting member among the optical members in the optical path between the polarization selecting member 10 as the polarization setting unit and the irradiated surface is divided into three regions. It is preferable to support at three points.
- an illumination imaging optical system for guiding a substantially uniform illumination region formed on the exit surface of the rod integrator to the irradiated surface
- a polarization conversion member that converts non-polarized light to linearly polarized light is disposed in the vicinity of the pupil position, the polarization conversion member 22 as the polarization setting unit and the optical member in the optical path between the irradiated surface It is preferable to support one optical surface side of at least one light transmitting member at three points in three regions.
- the illumination optical device illuminates the mask (reticle) (illumination process), and the transfer pattern formed on the mask using the projection optical system is applied to the photosensitive substrate.
- Microdevices semiconductor elements, imaging elements, liquid crystal display elements, thin film magnetic heads, etc.
- exposure process exposure process
- a metal film is deposited on one lot of wafers.
- a photoresist is applied onto the metal film on the one lot of wafers.
- the pattern image on the mask is sequentially exposed and transferred to each shot area on the wafer of one lot via the projection optical system.
- the photoresist on the one lot of wafers is developed, and in step 305, the resist pattern is used as an etching mask on the one lot of wafers.
- a circuit pattern force corresponding to each is formed in each shot area on each wafer.
- a device pattern such as a semiconductor element is manufactured by forming a circuit pattern of an upper layer. According to the semiconductor device manufacturing method described above, a semiconductor device having an extremely fine circuit pattern can be obtained with high throughput.
- a predetermined pattern is formed on the plate (glass substrate).
- a liquid crystal display element as a microdevice can also be obtained.
- a so-called photolithography process is performed in which the exposure pattern of the above-described embodiment is used to transfer and expose a mask pattern onto a photosensitive substrate (such as a glass substrate coated with a resist).
- a predetermined pattern including a large number of electrodes and the like is formed on the photosensitive substrate.
- the exposed substrate is subjected to a development process, an etching process, a resist stripping process, and the like, whereby a predetermined pattern is formed on the substrate, and the process proceeds to the next color filter forming process 402.
- a large number of sets of three dots corresponding to R (Red), G (Green), and B (Blue) are arranged in a matrix, or R, G, A color filter is formed by arranging a set of filters of the three stripes B in the horizontal scanning line direction.
- a cell assembling step 403 is executed.
- a liquid crystal panel liquid crystal cell
- liquid crystal is injected between the substrate having the predetermined pattern obtained in the pattern formation step 401 and the color filter obtained in the color filter formation step 402, so that the liquid crystal Manufactures panels (liquid crystal cells).
- the module assembling step 404 components such as an electric circuit and a backlight for performing display operation of the assembled liquid crystal panel (liquid crystal cell) are attached to complete the liquid crystal display element.
- a liquid crystal display element having an extremely fine circuit pattern can be obtained with high throughput.
- the force using KrF excimer laser light (wavelength: 248 nm) or ArF excimer laser light (wavelength: 193 nm) as the exposure light is not limited to this, and other suitable Laser light source, for example, F laser light that supplies laser light with a wavelength of 157 nm
- the present invention can be applied to two sources. Furthermore, in the above-described embodiment, the present invention has been described by taking an exposure apparatus provided with an illumination optical apparatus as an example. It is obvious that the present invention can be applied to a general illumination optical device for lighting.
- a method of filling the optical path between the projection optical system and the photosensitive substrate with a medium having a refractive index larger than 1.1 may apply.
- a method for filling the liquid in the optical path between the projection optical system and the photosensitive substrate a method for locally filling the liquid as disclosed in International Publication No. WO99Z49504, A method of moving a stage holding a substrate to be exposed as disclosed in Japanese Patent No. 124873 in a liquid tank, or a predetermined stage on such a stage as disclosed in Japanese Patent Laid-Open No. 10-303114.
- a method can be employed in which a liquid tank having a depth is formed and the substrate is held in the tank.
- the liquid it is preferable to use a liquid that is stable with respect to a projection optical system that is transparent to exposure light and has a refractive index as high as possible, and a photoresist that is applied to the substrate surface.
- a liquid that is stable with respect to a projection optical system that is transparent to exposure light and has a refractive index as high as possible, and a photoresist that is applied to the substrate surface.
- KrF excimer laser light or ArF excimer laser light is used as exposure light
- pure water or deionized water can be used as the liquid.
- F laser light use a fluorine-based liquid that can transmit the F laser light, such as fluorine-based polyethylene or perfluorinated polyether (PFPE)! ,.
- PFPE perfluorinated polyether
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- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Epidemiology (AREA)
- Public Health (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
- Projection-Type Copiers In General (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US11/659,978 US20070222962A1 (en) | 2004-08-10 | 2005-07-21 | Illumination Optical Equipment, Exposure System and Method |
JP2006531380A JPWO2006016469A1 (ja) | 2004-08-10 | 2005-07-21 | 照明光学装置、露光装置、および露光方法 |
EP05766348A EP1796139A4 (en) | 2004-08-10 | 2005-07-21 | OPTICAL LIGHTING DEVICES, EXPOSURE SYSTEM AND METHOD |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004233006 | 2004-08-10 | ||
JP2004-233006 | 2004-08-10 |
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WO2006016469A1 true WO2006016469A1 (ja) | 2006-02-16 |
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PCT/JP2005/013410 WO2006016469A1 (ja) | 2004-08-10 | 2005-07-21 | 照明光学装置、露光装置、および露光方法 |
Country Status (5)
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US (1) | US20070222962A1 (ja) |
EP (1) | EP1796139A4 (ja) |
JP (1) | JPWO2006016469A1 (ja) |
TW (1) | TW200608154A (ja) |
WO (1) | WO2006016469A1 (ja) |
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JP2006245115A (ja) * | 2005-03-01 | 2006-09-14 | Canon Inc | 露光方法及び装置 |
WO2011158912A1 (ja) * | 2010-06-19 | 2011-12-22 | 株式会社ニコン | 照明光学系、露光装置、およびデバイス製造方法 |
JP2013239750A (ja) * | 2013-08-23 | 2013-11-28 | Nikon Corp | 照明光学系、露光装置、およびデバイス製造方法 |
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US8270077B2 (en) | 2004-01-16 | 2012-09-18 | Carl Zeiss Smt Gmbh | Polarization-modulating optical element |
CN1910522B (zh) | 2004-01-16 | 2010-05-26 | 卡尔蔡司Smt股份公司 | 偏振调制光学元件 |
US20070019179A1 (en) | 2004-01-16 | 2007-01-25 | Damian Fiolka | Polarization-modulating optical element |
US7324280B2 (en) | 2004-05-25 | 2008-01-29 | Asml Holding N.V. | Apparatus for providing a pattern of polarization |
TW200903138A (en) * | 2007-07-12 | 2009-01-16 | Young Optics Inc | Illumination system |
KR102140789B1 (ko) * | 2014-02-17 | 2020-08-03 | 삼성전자주식회사 | 결정 품질 평가장치, 및 그것을 포함한 반도체 발광소자의 제조 장치 및 제조 방법 |
US10928606B2 (en) * | 2016-03-23 | 2021-02-23 | Tianjin Ofilm Opto Electronics Co., Ltd. | Lens unit |
CN113267840B (zh) * | 2021-05-08 | 2022-02-22 | 中国工程物理研究院激光聚变研究中心 | 锯齿光阑及其应用及其对光路的调试方法 |
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Also Published As
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JPWO2006016469A1 (ja) | 2008-05-01 |
US20070222962A1 (en) | 2007-09-27 |
TW200608154A (en) | 2006-03-01 |
EP1796139A1 (en) | 2007-06-13 |
EP1796139A4 (en) | 2009-08-26 |
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