WO2006080474A1 - 露光方法および装置 - Google Patents
露光方法および装置 Download PDFInfo
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- WO2006080474A1 WO2006080474A1 PCT/JP2006/301386 JP2006301386W WO2006080474A1 WO 2006080474 A1 WO2006080474 A1 WO 2006080474A1 JP 2006301386 W JP2006301386 W JP 2006301386W WO 2006080474 A1 WO2006080474 A1 WO 2006080474A1
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- Prior art keywords
- light
- photosensitive material
- optical system
- dimensional pattern
- light beam
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70216—Mask projection systems
- G03F7/70308—Optical correction elements, filters or phase plates for manipulating imaging light, e.g. intensity, wavelength, polarisation, phase or image shift
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- 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
- G02B26/0833—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 the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70216—Mask projection systems
- G03F7/70275—Multiple projection paths, e.g. array of projection systems, microlens projection systems or tandem projection systems
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70216—Mask projection systems
- G03F7/70283—Mask effects on the imaging process
- G03F7/70291—Addressable masks, e.g. spatial light modulators [SLMs], digital micro-mirror devices [DMDs] or liquid crystal display [LCD] patterning devices
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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
- G03F7/70483—Information management; Active and passive control; Testing; Wafer monitoring, e.g. pattern monitoring
- G03F7/70491—Information management, e.g. software; Active and passive control, e.g. details of controlling exposure processes or exposure tool monitoring processes
- G03F7/70525—Controlling normal operating mode, e.g. matching different apparatus, remote control or prediction of failure
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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
- G03F7/70483—Information management; Active and passive control; Testing; Wafer monitoring, e.g. pattern monitoring
- G03F7/70605—Workpiece metrology
- G03F7/70616—Monitoring the printed patterns
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70691—Handling of masks or workpieces
- G03F7/70775—Position control, e.g. interferometers or encoders for determining the stage position
Definitions
- the present invention relates to an exposure method and an optical apparatus, and more specifically, each light beam corresponding to each pixel portion that is spatially light-modulated by reflecting light emitted from a light source by a large number of pixel portions is imaged.
- the present invention relates to an exposure method and apparatus for forming a two-dimensional pattern image on a photosensitive material and exposing the photosensitive material.
- the exposure apparatus includes a light source, a DMD (digital 'micromirror' device) which is a spatial light modulation means for spatially modulating laser light emitted from the light source, and laser light spatially modulated by the DMD. And an imaging optical system for imaging.
- the DMD is formed by using a semiconductor manufacturing process so that a large number of micromirrors are arranged two-dimensionally on a semiconductor substrate such as silicon, and each DMD is formed according to a control signal input from the outside. The angle of the reflection surface of the small mirror is changed. This DMD spatially modulates the light by reflecting the incident light with the numerous micromirrors.
- a printed circuit board can be prepared without preparing a light shielding mask.
- Can be created (Akihito Ishikawa "Development shortening and mass production application by maskless exposure”, “Electronics mounting technology", Technical Research Co., Ltd., Vol. 18, No. 6, 200 2 years Pp. 74-79, and JP 2004-00 1 244).
- Each light beam corresponding to the mirror is imaged through the imaging optical system to form an image of the wiring pattern on the photosensitive material.
- the imaging position of the light beam may be shifted in the optical axis direction of the optical path for forming the image of the wiring pattern or in the direction orthogonal to the optical axis direction.
- a technique for correcting such misregistration a technique for forming an image of the above wiring pattern on a photosensitive material by performing spatial light modulation with DMD in advance by using DMD has been proposed ( Japanese Patent Laid-Open No. 2 0 0 3-0 5 7 8 3 4).
- the method of performing spatial light modulation in consideration of the positional deviation of the imaging position of each light beam is not necessarily an efficient method because it is necessary to recreate a control signal for controlling the DMD. There is a statement that it is easier to correct the imaging position of each light beam without recreating it.
- the present invention has been made in view of the above circumstances.
- An exposure method and an exposure method that can more easily correct the imaging position of each light beam when forming a two-dimensional pattern image on a photosensitive material. It is an object to provide a device. Disclosure of the invention
- the first exposure method of the present invention light emitted from a light source is spatially converted by a spatial light modulation means in which a large number of pixel portions that modulate incident light according to a predetermined control signal are arranged two-dimensionally.
- a spatial light modulation means in which a large number of pixel portions that modulate incident light according to a predetermined control signal are arranged two-dimensionally.
- Each of the luminous fluxes corresponding to each pixel unit that has been optically modulated and spatially modulated by the spatial light modulator is imaged through the first imaging optical system, and through the first imaging optical system.
- each light beam is individually passed through each of the two-dimensionally arranged microphone lenses, and each light beam individually passed through each microlens is passed through.
- a second imaging optical system forms an image on a photosensitive material so as to form an image on the photosensitive material
- the photosensitive material is exposed to the target two-dimensional pattern.
- the image forming position of each light beam by the first image forming optical system or the second image forming optical system is individually set for each light beam. It is characterized by controlling to.
- the light emitted from the light source is spatially modulated by a spatial light modulation means in which a large number of pixel portions that modulate incident light in accordance with a predetermined control signal are arranged two-dimensionally.
- Each of the luminous fluxes corresponding to each pixel unit that has been optically modulated and spatially modulated by the spatial light modulator is imaged through the first imaging optical system, and through the first imaging optical system.
- each light beam is individually passed through each of the two-dimensionally arranged microphone lens and directly imaged on the photosensitive material.
- the image of the two-dimensional pattern formed on the photosensitive material is the target.
- Each to match the 2D pattern Is characterized in that controlled individually for each light flux imaging position of the first imaging optical system of the bundle.
- the first exposure apparatus of the present invention comprises a light source and a plurality of two-dimensionally arranged pixel units that modulate light emitted from the light source according to a predetermined control signal, and a space for spatially modulating the light.
- a light modulating unit, a first imaging optical system that forms an image of each light beam corresponding to each pixel portion spatially modulated by the spatial light modulating unit, and a first imaging optical system A microlens array that is arranged in the vicinity of the imaging position of each light beam that has been imaged through the microlens and that is arranged in a two-dimensional manner, and that is individually arranged for each microlens.
- a second imaging optical system that forms an image of a two-dimensional pattern on the photosensitive material so that each light beam passed through the photosensitive material is imaged on the photosensitive material.
- a projection exposure apparatus that exposes a light source, formed on the photosensitive material.
- the imaging position of each light beam by the first imaging optical system and / or the second imaging optical system is individually set for each light beam.
- the image forming position control means for controlling is provided.
- the imaging position control means moves the imaging position of each light beam in the optical axis direction of the optical path for forming the image of the two-dimensional pattern on the photosensitive material, or is orthogonal to the optical axis direction. Or move in the direction of
- the second exposure apparatus of the present invention is a space in which a light source and a plurality of pixel units that modulate light emitted from the light source in accordance with a predetermined control signal are arranged two-dimensionally, and the light spatially modulates the light.
- Light change A first image forming optical system that forms an image of each light beam corresponding to each pixel portion spatially modulated by the spatial light modulating unit, and a first image forming optical system.
- a microlens array that is arranged in the vicinity of the image formation position of each imaged light beam and that allows a plurality of microlenses to be individually passed through each light beam, and each microlens is individually provided.
- the projection exposure apparatus for forming an image of a two-dimensional pattern on the photosensitive material so that each light beam passed through is formed on the photosensitive material, and exposing the target two-dimensional pattern on the photosensitive material.
- the imaging position of each light beam by the first imaging optical system is individually controlled for each light beam so that the image of the two-dimensional pattern formed on the material matches the target two-dimensional pattern. It is characterized by having imaging position control means To do.
- the imaging position control means moves the imaging position of each light beam in the optical axis direction of the optical path for forming the image of the two-dimensional pattern on the photosensitive material, or is orthogonal to the optical axis direction. Or move in the direction of
- the imaging position control means can be a liquid crystal element in which a refractive index distribution is generated by electrical control.
- Matching a two-dimensional pattern image formed on the photosensitive material with a target two-dimensional pattern is at least one of the position, size, and density of each pixel constituting the two-dimensional pattern image. This means that one is matched with each of the pixels constituting the target two-dimensional pattern corresponding to these pixels.
- the image of the two-dimensional pattern formed on the photosensitive material is the same as the object corresponding to these surface elements in terms of the position, size, and density of each pixel constituting the image of the two-dimensional pattern. It is desirable to match each pixel that makes up the two-dimensional pattern.
- the first imaging optical system for each light beam is formed so that the image of the two-dimensional pattern formed on the photosensitive material matches the target two-dimensional pattern. Since the imaging position by the second imaging optical system is controlled individually for each light beam, for example, without recreating a control signal for controlling the spatial light modulation means. Thus, the imaging position of each light beam can be corrected more easily. Furthermore, by controlling the image formation position of the light beam individually for each light beam, for example, a two-dimensional pattern formed on the photosensitive material. On the contrary, it is also possible to shift the position of the light beam and form each light beam on the photosensitive material so as to smooth the change in the exposure light quantity at the edge portion constituting the contour of the screen.
- the first imaging optical system for each light beam is formed so that the image of the two-dimensional pattern formed on the photosensitive material matches the target two-dimensional pattern. Since the image formation position is controlled individually for each light beam, for example, the image formation of each light beam can be performed more easily without recreating a control signal for controlling the spatial light modulation means. The position can be corrected. Furthermore, by controlling the image formation position of the light beam individually for each light beam, for example, the change in the amount of exposure light at the edge portion constituting the outline of the two-dimensional pattern formed on the photosensitive material is made smooth. Conversely, the positions of the light beams can be shifted so that each light beam is imaged on the photosensitive material.
- the imaging position control means moves the imaging position of each light beam in the direction of the optical axis of the optical path for forming a two-dimensional pattern image on the photosensitive material. If the position is moved in a direction perpendicular to the optical axis direction, the imaging position of each light beam can be moved more accurately, and the position control of the imaging position of each light beam can be performed more accurately. Can be done accurately.
- the imaging position control means is a liquid crystal element in which a refractive index distribution is generated by electrical control, the imaging position of each light beam can be moved without mechanically moving the optical components. Further, the imaging position of each light beam can be controlled more easily.
- FIG. 1 is a diagram showing an optical path of an optical system of an exposure head provided in the exposure apparatus according to the embodiment of the present invention.
- FIG. 2 is a perspective view showing a schematic configuration of the optical system of the exposure head.
- Figure 3 shows an enlarged view of the polarization section that aligns the polarization direction of the light emitted from the light source.
- Figure 4 shows an enlarged view of a portion of a number of micromirrors arranged in two dimensions.
- Figure 5A shows the operation of reflecting light with a micromirror.
- Fig. 5B is a diagram showing the operation of reflecting light with a small mirror tilted at a different angle from Fig. 5A above.
- Fig. 6 A shows an example of the used area in a large number of micromirrors
- Fig. 6B shows an example of the usage area different from Fig. 6A above in a large number of micromirrors arranged.
- FIG. 7 is an enlarged perspective view showing a schematic configuration of the first imaging position correction unit.
- Fig. 8A is a view of a part of the shift direction correction element as seen from the upstream side of the optical path through which the light beam propagates.
- Fig. 8B is a diagram showing the cross section of Fig. 8A above.
- Fig. 8C is a cross-sectional view of Fig. 8A, showing a different cross-section from Fig. 8B above.
- Fig. 9A is a view of a part of the focus direction correction element as seen from the upstream side of the optical path of the light beam.
- Fig. 9B is a diagram showing a cross section of Fig. 9A above.
- FIG. 10 is an enlarged perspective view showing a schematic configuration of the second imaging position correction unit.
- Fig. 11 is a perspective view showing the external appearance of the exposure apparatus.
- Figure 12 is a perspective view showing how a photosensitive material is exposed using an exposure head.
- Fig. 1 3 A is a plan view showing the exposure area formed on the photosensitive material
- Fig. 1 3 B is a diagram showing the positional relationship of the exposure area by each exposure head.
- FIG. 14 is a block diagram showing the electrical configuration of the exposure apparatus.
- FIG. 15 shows the optical path of the optical system of the exposure head provided in the exposure apparatus according to the embodiment of the present invention.
- FIG. 1 is a diagram showing an optical path of an optical system of an exposure head provided in the exposure apparatus
- FIG. 2 is a perspective view showing a schematic configuration of the optical system
- FIG. 3 is a polarization unit in which the polarization direction of laser light emitted from the light source is
- Fig. 4 shows an enlarged view of a portion of a number of micromirrors arranged in two dimensions.
- Fig. 5A and Fig. 5B show how the micromirrors reflect light.
- FIGS. 6A and 6B are diagrams showing examples of the use area of the micromirror in the DMD.
- An exposure apparatus for carrying out the exposure method of the present invention is used for producing a printed wiring board, and is a two-dimensional pattern on a printed wiring board material formed by laminating a photosensitive material on a substrate. A certain wiring pattern is exposed.
- the exposure head 1 66 of the exposure apparatus includes a light source 66 and a plurality of two-dimensionally arranged micromirrors 8 2 that are pixel units that modulate the laser light Le emitted from the light source 66 according to a predetermined control signal.
- Each of the light beams L 1, L 2 ... 'corresponding to each micro-mirror 8 2 that spatially modulates the laser light Le and spatial light modulation by the DMD 80 is formed.
- the first imaging optical system 5 1 A Micro-mouth lens array 55, which is a two-dimensional array of microphone mouth lenses 5 5a through which light beams LI, L 2 A second imaging optical system 5 1 B that forms a two-dimensional pattern image J 2 on the photosensitive material 3 OK so as to form an image on the photosensitive material 3 OK again;
- Imaging position correction means .40 that is an imaging position control means that individually corrects the image.
- first imaging optical system 51 and the second imaging optical system 51B are desirably optical systems that are telecentric on the image side.
- the exposure head 1 6 6 further receives a laser beam Le emitted from a light source 66, captures the laser beam Le having a substantially uniform light intensity distribution, and emits the light intensity distribution correcting optical system 6 7.
- Light intensity distribution correction optical system 6 Polarizing section 68 that aligns the polarization direction in one direction through laser light Le emitted from 7 7, Reflects the laser light emitted from polarizing section 68 and changes the direction of the optical path Folding mirror ⁇ "6 9 and laser light reflected by mirror 6 9 are totally reflected and made incident on DM D 80, and each light beam that has been spatially modulated by DMD 80 and transmitted is transmitted through TIR ( Total reflection) A prism 70 is provided.
- the light source 66 is a multiplexing unit (not shown) that combines each laser beam emitted from a plurality of GaN-based semiconductor lasers that emit light having a wavelength of 400 nm into one optical fiber for multiplexing. ), And the laser light having the wavelength of 45 nm is emitted from an optical fiber bundle 66 A formed by bundling a plurality of optical fibers for multiplexing of each multiplexing unit.
- the light emitted from the light source 6 6 is not limited to the laser light having a wavelength of 40 5 nm, but can be generated by any wavelength or any method as long as the photosensitive material 30 K can be exposed. May be light.
- the light intensity distribution correcting optical system 6 7 includes a condensing lens 7 1 for condensing the laser light Le emitted from the optical fiber bundle 6 6 A of the light source 6 6. It consists of a rod integrator that will be described later inserted into the optical path of the laser beam Le that has passed through the lens 7 1, and a collimating lens 7 4 that is arranged downstream of this rod integrator 7 2, that is, on the mirror 6 9 side. Has been.
- the rod integrator 72 emits the laser light L e incident on one end from the other end so that the light intensity distribution in the cross section of the light beam becomes more constant.
- the laser light Le emitted from the optical fiber bundle 66 A and passed through the light intensity distribution correcting optical system 67 becomes a parallel light beam whose light intensity distribution in the cross section of the light beam is substantially constant.
- the polarization unit 6 8 is a prism-type polarization beam splitter B s 1, B s 2 that transmits P-polarized light and reflects S-polarized light.
- a wave plate He 2 is provided.
- the polarizing beam splitter B s 1 and the polarizing beam splitter B s 2 are arranged in two stages.
- the laser beam Le emitted from the light intensity distribution correction optical system 67 is incident on the polarization beam splitter B s 1, and the P-polarized component of the laser beam Le (shown by symbol P in the figure)
- the S-polarized component (indicated by symbol S in the figure) of the laser beam Le is transmitted through the polarization beam splitter B s 1 and reflected by the beam splitting surface M b 1.
- the laser beam Le having the S-polarized component reflected by the beam splitting surface M b 1 enters the polarizing beam splitter B s 2 and is reflected by the beam splitting surface M b 2 of the polarizing beam splitter B s 2. . Reflected by this beam split surface M b 2
- the laser beam Le passes through the half-wave plate He 2 disposed on the exit surface of the polarization beam splitter B s 2, and the polarization direction is rotated 90 degrees to be emitted as P-polarized light. Then, the laser beams Le having the same polarization direction emitted through the polarization beam splitter B s 1 and the light beam splitter B s 2 are emitted toward the mirror 69.
- each micromirror 8 2 corresponds to each pixel of the two-dimensional pattern exposed to the printed wiring board material 30.
- Each micromirror 8 2 is individually based on the data value created for each pixel. Controlled. By this control, the laser beam Le force incident on each micro mirror 82 is either in the exposure direction toward the optical path for exposing the printed wiring board material 30 or in the non-exposure direction deviating from this exposure direction.
- the photosensitive material is controlled by controlling each of the many micromirrors 82 so that the laser beam Le is reflected in the exposure direction (ON) or the laser beam is reflected in the non-exposure direction (OFF). Expose the desired 2D pattern on 30 K.
- the above-mentioned many micromirrors 8 2 are arranged by supporting each micromirror (micromirror) 8 2 on a SR AM cell (memory cell) 8 3 by a column, It consists of a large number of (for example, 10 2 4 x 7 6 8) micromirrors arranged in a grid to form each pixel of a two-dimensional pattern image.
- a material with high reflectivity such as aluminum is deposited on the surface of the micromirror 8 2.
- the reflectance of the micromirror 8 2 is 90% or more.
- CMOS SR AM cell 8 3 manufactured on a normal semiconductor memory production line via a support including a hinge and a yoke. Is monolithic.
- the micro mirror 8 2 supported by the support column has a degree ⁇ (for example ⁇ 10 degrees) around the diagonal of the micro mirror 8 2. Tilted in range.
- Figure 5 ⁇ shows the state where the micromirror 8 2 is in the ON state and tilted to + ⁇ degrees.
- FIG. 5B shows a state in which the micro mirror 82 is tilted to 1 ⁇ degree when it is in the OFF state. Therefore, by controlling the inclination of the micro mirror 82 in each pixel of the DMD 80 as shown in FIG. 5 according to the image signal, the laser light Le incident on the DMD 80 is respectively generated. It is reflected in the direction according to the inclination of the micro mirror 82, that is, in the exposure direction and the non-exposure direction.
- the on / off control of the minute mirror 82 is performed by a controller 30 2 described later connected to the D M D 80.
- the amount of laser light applied to the photosensitive material 30 of the printed wiring board material 30 is controlled by changing the ratio of the time that the micromirror is turned on and the time that it is turned off per unit time. be able to.
- DMD 80 is sub-scanned when a micromirror arranged in the main scanning direction during exposure, that is, in the column direction, with 102 (pixels) arranged. 7 5 6 pixels (pixel columns) are arranged in the direction, that is, in the row direction.
- a part of micro mirror columns for example, 1 0 2 4 columns X 3 0 0 rows
- Control is made to drive.
- the modulation speed of each micromirror 8 2 decreases as the number of micromirrors to be controlled (number of pixels) increases. By using only a part of 2, the modulation speed of each micromirror 82 included in this part can be increased.
- the imaging optical system 5 1 includes the first imaging optical system 5 1 A comprising the lens system 5 5 4, the micro lens array 5 5, the aperture array 5 9, the lens system 5 7,
- the second imaging optical system 51B composed of 5 8 is arranged in this order from the upstream side to the downstream side of the optical path.
- the microlens array 55 is reflected by the micromirrors 82 of the DMD 80 and passes through the first imaging optical system 51 A to transmit the light beams corresponding to the micromirrors 82.
- Each microphone mouth lens 5 5 a through which each passes is arranged.
- As the microphone opening lens 55a for example, a lens having a focal length of 0.19 mni and A (numerical aperture) of 0.11 can be used.
- the aperture array 59 is composed of a large number of apertures 59a formed so as to correspond to the respective microphone opening lenses 55a of the microlens array 55.
- the first imaging optical system forms an image of a two-dimensional pattern on each photosensitive material 30 K with each light beam corresponding to each pixel portion spatially modulated by the spatial light modulator (80).
- the second imaging optical system re-divides each light beam imaged by the first imaging optical system again with the above-mentioned light beam. It is desirable to form an image on the same plane perpendicular to the axial direction.
- the first imaging optical system 5 1 A enlarges the image of the DMD 80 by 3 times and forms an image in the microlens array 55.
- the second imaging optical system 51 B enlarges the image formed in the microlens array 55 by a factor of 1.67 and connects it onto the photosensitive material 30 K of the printed wiring board material 30. Let me image. Therefore, as a whole, the imaging optical system 51 is enlarged by a factor of 5 to the two-dimensional pattern spatially modulated by DMD 80, and is connected onto the photosensitive material 30K of the printed wiring board material 30. Let me image. '
- the printed wiring board material 30 is conveyed in a sub-scanning direction (a direction perpendicular to the paper surface of FIG. 1, the Y direction in the figure) by a stage driving device described later.
- the imaging position correcting means 40 is a first imaging position correcting unit 4 OA that is a liquid crystal element that corrects the imaging position of each light beam imaged by the first imaging optical system 51 A. And a second imaging position correction unit 4OB, which is a liquid crystal element that corrects the imaging position of each light beam formed by the second imaging optical system 51B.
- the imaging position correcting means 40 is composed of only one of the first imaging position correcting unit 40 A and the second imaging position correcting unit 40 B. It may be.
- FIG. 7 is an enlarged perspective view showing a schematic configuration of the first imaging position correcting unit 4 O A. As shown in FIG.
- the first imaging position correction unit 4 OA is disposed between the first imaging optical system 5 1 A and the microlens array 55, and includes two liquid crystal layers 4 1 C and 4 1 G. Laminate shift In each liquid crystal layer of the focus direction correcting element 4 2 composed of the direction correcting element 4 1 and one liquid crystal layer 4 2 B, and the shift direction correcting element 41 and the focus direction correcting element 4 2. And a voltage applying unit 43 for applying a voltage for forming an electric field.
- the shift direction correcting element 41 and the focus direction correcting element 42 may be arranged with a gap therebetween as shown in FIG. 7, or may be arranged in close contact with each other. Further, these elements may be integrated by bonding with an adhesive or the like.
- Fig. 8A is a view of a part of the shift direction correction element 41 viewed from the upstream side of the optical path through which the light beam propagates.
- Fig. 8B is a view showing the 8b-8b cross section of Fig. 8A.
- FIG. 8C is a view showing an 8 c-8 c cross section of FIG. 8A.
- the shift direction correcting element 4 1 includes an aperture array plate 4 1 A and a glass plate 4 1 each having an opening 4 1 m corresponding to each microphone opening lens 5 5 a of the micro lens array 5 5.
- B Liquid crystal layer 4 1 C, Glass plate 4 1 D, 90 ° Optical rotation plate 4 1 E, Glass plate 4 1 F, Liquid crystal layer 4 1 G, Glass plate 4 1 H Are stacked from the upstream side.
- Each electrode D 1 1 corresponding to each opening 4 1 m is arranged on the liquid crystal layer 4 1 C side of the glass plate 4 1 B, and the liquid crystal layer 4 1 C of the glass plate 4 1 D On the surface on the side, each electrode D 12 corresponding to each electrode D 11 (each opening 41 m) is arranged.
- a voltage between the electrodes D.1 1 and D 1 2 and forming an electric field in the liquid crystal layer 4 1 C the orientation of the liquid crystal existing between the electrodes corresponding to each other! The direction is changed, and a refractive index gradient is generated in the liquid crystal region between the electrodes.
- each electrode D14 corresponding to the electrode D13 is disposed on the surface of the layer 41G side.
- the voltage application unit 4 3 applies a voltage between the electrodes D 1 3 and D 1 4 to form an electric field in the liquid crystal layer 4 1 G, whereby the alignment direction of the liquid crystals existing between the corresponding electrodes
- the refractive index gradient is generated in the liquid crystal region between the electrodes. That is, a refractive index distribution is generated in the liquid crystal region.
- the glass plate is shifted in a direction parallel to the surface (arrow X—Y plane direction in the figure), that is, in a direction perpendicular to the optical axis direction of the optical path for forming a two-dimensional pattern image on the photosensitive material 30 K.
- a vertically aligned liquid crystal is known.
- FIG. 9A is a view of a part of the focus direction correcting element 42 viewed from the upstream side of the optical path of the light beam
- FIG. 9B is a view showing a 9b-9b cross section of FIG. 9A.
- the focus direction correcting element 4 2 arranged downstream of the shift direction correcting element 41 is connected to each aperture 4 2 corresponding to each micro lens 5 5a of the micro lens array 55.
- An aperture array plate 4 2 A having m, a glass plate 4 2 B, a liquid crystal layer 4 2 C made of liquid crystal, and a glass plate 4 2 D are laminated in this order from the upstream side of the optical path. Since the shift direction correcting element 41 includes the aperture array plate 41 A, the focus direction correcting element 42 may not include the aperture array plate 42A.
- each electrode D 21 is disposed at each position corresponding to each opening 4 2 m.
- each electrode D 22 is arranged at each position corresponding to each electrode D 21 (each opening 42 m).
- Each of the electrodes D 2 jL and D 2 2 has a plurality of electrode portions that are divided into ring zones, and the voltage application section 4 3 has electrodes D 2 1 and D corresponding to each other.
- a voltage is applied to each electrode part between 2 and 2 to form a different electric field between these electrode parts, and the alignment direction of the liquid crystal existing between each electrode is changed to change the convex lens in the liquid crystal region between the electrodes
- the refractive index distribution can be generated so as to have a concave lens function.
- the imaging position of the light beam incident on the aperture 4 2 m is set in the direction perpendicular to the surface of the glass plate 4 2 B (in the direction of the arrow Z in the figure), that is, on the photosensitive material 30 K. It can be moved in the optical axis direction of the optical path for forming an image.
- the imaging position of the incident light beam L n while focusing on the opening 4 2 m can be moved from the position P 1 to the position P 2 along the optical axis direction (the arrow Z direction in the figure).
- liquid crystal used for this A vertically aligned one is known.
- the shift direction correction element 41 and the focus direction correction element 42 are described in EE xress April 15, 2004, pages 24 to 27 (TECHNOLOGY FOC US), Richo Technical Report No. It is possible to adopt one having the structure and operation described in 28 DECEMB ER 200 2 (optical path shift element using vertically aligned ferroelectric liquid crystal).
- the imaging positions of the light bundles L 1, L 2,... Spatially modulated by the DMD 80 and passed through the first imaging optical system 51 A are captured as the first imaging position.
- the normal part 4 OA By moving the normal part 4 OA in the optical axis direction or in a direction orthogonal to the optical axis direction, the light beams L 1, L 2.
- FIG. 10 is an enlarged perspective view showing a schematic configuration of the second imaging position correcting section 40B.
- the second imaging position correcting unit 40B includes a focus direction correcting element 44 composed of one liquid crystal layer 44C disposed between the second imaging optical system 51B and the photosensitive material 30K.
- the second imaging optical system 5 1 B uses a predetermined imaging plane for imaging each light beam L 1, L 2..., That is, the photosensitive material 30 K of the printed wiring board material 30.
- a position variation measuring unit 45 for measuring a positional variation (indicated by symbol ⁇ in the figure) of the photosensitive material 30 K from a predetermined arrangement surface to be positioned (indicated by symbol Me in the diagram); Based on the measurement result of the position fluctuation by the position fluctuation measuring unit 45, the second result of each light flux is matched so that the image of the two-dimensional pattern formed on the photosensitive material 30mm matches the target two-dimensional pattern. And a focus control unit 46 that individually corrects the image formation position by the image optical system for each light beam.
- the position fluctuation measuring unit 45 measures the position variation ⁇ of the photosensitive material 30 mm by irradiating the photosensitive material 30 mm with the laser light LX and reflecting the reflected light of the laser light LX with the photosensitive material 30 mm.
- the known laser side length to measure the position variation ⁇ by analyzing Techniques etc. can be adopted.
- the focus direction correcting element 44 has substantially the same configuration and function as the focus direction correcting element 42 already described. That is, the focus direction correcting element 44 has an opening 44 m arranged corresponding to the position through which each light beam L 1, L 2... Emitted from the second imaging optical system 51 B passes.
- Aperture array plate 4 4 A, glass plate 4 4 B, liquid crystal layer 4 4 C made of liquid crystal, and glass plate 4 4 D are laminated in this order from the upstream side of the optical path.
- Glass plate 4 4 B The electrodes corresponding to the openings 44 m are arranged on the surface of the glass plate 44 D on the liquid crystal layer 44 C side.
- the focus control unit 46 applies a voltage between the electrodes to form an electric field, thereby changing the orientation direction of the liquid crystal existing between the electrodes in the same manner as described above, thereby changing the liquid crystal region to a convex lens or a concave lens machine.
- a refractive index distribution that gives the ability is generated.
- the focus control unit 46 controls the focus direction correcting element 44 and each light beam L 1, L 2 incident on the aperture 4 4 m
- the image forming position is individually moved in the direction of the optical axis, and the two-dimensional pattern image J2 formed on the photosensitive material 3 OK is matched with the target two-dimensional pattern.
- the position fluctuation measurement unit 4 5 By using the position fluctuation measurement unit 4 5 to measure the fluctuations of multiple different positions of the photosensitive material 3 OK, the image J 2 of the two-dimensional pattern formed on the photosensitive material 3 OK in the same manner as described above is used. It can be matched with the 2D pattern.
- the force control unit 46 controls the focus direction correcting element 44 based on the measurement result of the variation of a plurality of different positions on the photosensitive material 30 K by the position variation measuring unit 45.
- Aiming at the image J 2 of the two-dimensional pattern formed on the photosensitive material 30 K by individually moving the image forming positions of the light beams L l and L 2 incident on the aperture 44 m in the optical axis direction Can be matched to the two-dimensional pattern.
- the position variation measuring unit 45 may measure the position variation of the photosensitive material 30 K for each incident position of the light beams L l, L 2. It may be measured for each block divided on 30 K of the photosensitive material.
- the focus direction correcting element 4 4 is not dynamically controlled in the same manner as the focus direction correcting element 42 described above. Before the exposure of the photosensitive material, the focus position of each light beam L 1, L 2...
- the focus direction correction element 44 May be adjusted by the focus direction correction element 44 to fix the position.
- the field curvature aberration of the image of the two-dimensional pattern formed on the photosensitive material by each of the light beams L 1, L 2-′ formed by the second imaging optical system 51 ⁇ Correction may be performed by the correction element 44.
- a voltage application unit that applies a voltage between the electrodes corresponding to the openings 44m of the focus direction correcting element 44. Should be provided.
- Fig. 11 is a perspective view showing the external appearance of the exposure apparatus
- Fig. 12 is a perspective view showing how the photosensitive material is exposed using the exposure head
- Fig. 13A is a plan view showing an exposure region formed on the photosensitive material
- Fig. 13B is a diagram showing the positional relationship of the exposure areas for each exposure head.
- the exposure apparatus 200 includes a flat plate-like moving stage 15 5 2 that sucks and holds the back surface (surface opposite to the photosensitive material 30 K side) of the printed wiring board material 30. .
- Two guides 1 5 8 extending along the stage moving direction are installed on the upper surface of the thick plate-like installation table 1 5 6 supported by the four legs 1 5 4.
- the stage 15 2 is arranged such that its longitudinal direction faces the stage moving direction, and is supported by the guide 15 8 so as to be able to reciprocate.
- This exposure apparatus is provided with a stage driving device (not shown) for driving a stage 15 2 as a sub-scanning means along the guide 15 8 in the stage moving direction.
- a U-shaped gate 160 is provided at the center of the installation table 1556 so as to straddle the movement path of the stage 1552. Each of the ends of the U-shaped gate 160 is fixed to both side surfaces of the installation table 1556.
- a scanner 16 2 is provided on one side of the gate 160, and a plurality of (for example, two) scanners for detecting the leading and trailing edges of the printed wiring board material 30 on the other side. Sensors 1 6 4 are provided. Scanner 1 6 2 and sensor 1 6 4 are Are attached to each of the first and second fixed positions above the moving path of the stage 15 2. The scanner 1 6 2 and the sensor 1 6 4 are connected to a controller (not shown) that controls them.
- the scanner 1 6 2 has a plurality of (eg, 14) exposure heads arranged in an approximate matrix of m rows and n columns (eg, 3 rows and 5 columns). 1 6 6 is provided.
- m rows and n columns eg, 3 rows and 5 columns.
- 1 6 6 is provided.
- five exposure heads 16 6 are arranged in the first and second rows and five in the third row.
- the exposure head is expressed as 16 6 tnn.
- An exposure area 1 68 by the exposure head 1 6 6 has a rectangular shape with a short side in the sub-scanning direction. Accordingly, with the movement of the stage 15 2, a strip-shaped exposed region 1 70 is formed on the printed wiring board material 30 for each exposure head 1 6 6.
- the exposure area by the individual exposure heads arranged in the m-th row and the n-th column is indicated, it is expressed as an exposure area 1 6 8 mn. Also, as shown in FIGS.
- Each of the exposure heads in each row arranged in a line is arranged at a predetermined interval in the arrangement direction (on the long side of the exposure area) so that the strip-shaped exposed areas 170 are aligned without gaps in the direction perpendicular to the sub-scanning direction.
- the natural number is doubled (in this example, doubled).
- the portion that cannot be exposed between the exposure area 1 6 8 11 of the first row and the exposure area 1 6 8 12 is the exposure area 1 6 8 21 of the second row and the exposure area 1 6 of the third row. 8 31 and can be exposed.
- Each of the exposure heads 1 6 6 11 to 1 6 6 mn is provided with a DMD 80 that modulates the incident laser light for each pixel in accordance with image data as described above.
- Each exposure head 16 6 is connected to a controller 30 2 described later having a data processing unit and a mirror drive control unit.
- This data processing unit generates a control signal for controlling each micro mirror of DMD 80 based on the input data indicating the wiring pattern.
- the mirror drive control unit turns on / off each micro mirror of D M D 80 based on the control signal generated by the data processing unit.
- FIG. 14 is a block diagram showing the electrical configuration of the exposure apparatus.
- a modulation circuit 301 is connected to the overall control unit 300.
- the modulation circuit 3 0 1 acquires image data indicating a wiring pattern.
- a controller 302 that controls the DMD 80 is connected to the modulation circuit 301.
- the overall control unit 300 is connected to a laser diode (LD) drive circuit 303 that drives a laser module disposed in the light source 66.
- a stage driving device 304 that drives the stage 15 2 is connected to the overall control unit 300.
- LD laser diode
- the first imaging position correction unit 4 OA voltage application unit 43 uses each light beam L in advance. 1, After determining the voltage to be applied between each electrode of the shift direction correction element 41 and the focus direction correction element 42 so that L 2. The voltage applied between each electrode is fixed.
- the light fluxes of the combined laser beams emitted from the respective GaN-based semiconductor lasers of the light sources 6 6 of the exposure heads 1 6 6 of the scanner 1 6 2 are combined with the optical fiber bundle 6 6 Inject from the end face of A.
- the image data is input from the modulation circuit 301 to the controller 302 of the DMD 80 and stored in the frame memory of the controller 302.
- the stage 1 5 2 having the printed wiring board material 30 adsorbed on the surface moves at a constant speed from the upstream side to the downstream side of the guide 1 58 along the guide 1 58 by the drive of the stage driving device 304.
- the tip of the printed wiring board material 30 is detected by the sensor 1 64 attached to the gate 1 60 when the stage 1 52 passes under the gate 1 60, the above wiring pattern stored in the frame memory is displayed.
- the image data to be created is read by the data processing unit of the controller 302, and the data processing unit converts the image data into the image data. Based on this, a control signal for each exposure head 1 6 6 is generated.
- the mirror drive control unit performs on / off control of each of the 0 0 80 micro mirrors for each exposure head 1 66 based on the generated control signal.
- the size of the micromirror is 14 m ⁇ 1 ⁇ m.
- the light beam reflected by the micro mirror 8 2 when the micro mirror 8 2 of the D MD 80 is in the on state is reflected in the imaging optical system.
- An image is formed through 5 1, and an image of the wiring pattern is formed on the photosensitive material 30 K of the printed wiring board material 30, and each exposure area 16 8 on the photosensitive material 30 K is exposed.
- the printed wiring board material 30 is moved in the side running direction opposite to the stage moving direction. By sequentially exposing, a strip-shaped exposed region 170 for each exposure head 1666 is formed on the photosensitive material 30K.
- the position variation measuring unit 45 of the second imaging position correcting unit 40 B Measure the fluctuation of the position of the photosensitive material 30 K from the arrangement surface Me of the photosensitive material 30 K, and based on the measurement result, the focus control unit 46 is placed on the photosensitive material 3 K
- the image forming position of each light beam by the second imaging optical system 5 1 B is individually corrected for each light beam so that the formed wiring pattern image matches the target wiring pattern.
- the stage 1 5 2 is moved to the stage driving device 3 0 4 By driving this, the origin returns to the most upstream side of the gate 1 60 along the guide 1 5 8 and can be used for the next exposure.
- the image forming position of each light beam that has been spatially modulated is individually set for each light beam.
- the position, size, and dark g of each pixel that makes up the image of the wiring pattern formed on the photosensitive material due to the action that is captured by ' is the position and size of each pixel that makes up the target wiring pattern.
- the present invention forms an image of each light beam when forming an image of a wiring pattern on a photosensitive material. The position can be corrected more easily.
- the correction of the imaging position of each of the spatially light-modulated light beams by the first imaging position correcting unit 4 OA and the second imaging position correcting unit 40 B is performed for each light beam. Not only when performing individually, but it may be performed for every block composed of a plurality of light beams. In other words, by performing the correction of the imaging position of each light beam for each block, the light beam by the first image position correction unit 40 A and the second image position correction unit 40 B The imaging position can be corrected more easily. In such a case, the first imaging position correcting unit 4 OA moving direction and amount of the imaging position of each light beam belonging to a specific block, and the second imaging position correcting unit 4 The moving direction and moving amount due to 0 B are equal to each other.
- the correction operation as described above is performed by correcting the two-dimensional pattern, that is, the exposure pattern, and the purpose is to control the position of each beam to smooth the edge roughness.
- FIG. 15 is a view showing the optical path of the optical system of the exposure head provided in the exposure apparatus of the second embodiment.
- the exposure apparatus of the second embodiment is obtained by removing the second imaging optical system and the second imaging position correction unit from the configuration in the first embodiment. That is, the exposure apparatus of the second embodiment forms an image directly on the photosensitive material by passing each light beam individually passing through each of the microlenses after passing through the first imaging optical system. Thus, a two-dimensional pattern image is formed on the photosensitive material without passing through the second imaging optical system, and the target two-dimensional pattern is exposed on the photosensitive material.
- Imaging position correction means that individually corrects the imaging position of each light beam by the first imaging optical system so that the formed two-dimensional pattern image matches the target two-dimensional pattern. It is equipped with.
- the exposure apparatus of the second embodiment has the same configuration as that of the first embodiment except for the exposure head optical system, illustrations other than the optical system are omitted. Further, in the optical system shown in FIG. 15 described above, those having the same functions as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
- the imaging position correcting means 40 1 in the exposure apparatus of the second embodiment determines the imaging position of each light beam to be imaged by the first imaging optical system 5 1 A. It consists only of the first imaging position correction unit 4OA, which is the liquid crystal element to be corrected.
- the first imaging position correction unit 4OA includes the shift direction correction element 41 and the focus direction correction element 42, the shift direction correction element 41 and the focus direction correction element.
- a voltage applying unit 43 for applying a voltage for forming an electric field in each liquid crystal layer of the positive element 42.
- the imaging optical system 5 1 ′ that images each light beam spatially modulated by the DMD 80 on the photosensitive material 3 OK of the printed wiring board material 30 is the first imaging already described. It consists only of optical system 5 1 A.
- the first imaging position correction unit 4 OA is spatially modulated by the DMD 80 and passes through the first imaging optical system 51 A.
- each light bundle L 1, L 2 ⁇ ⁇ ⁇ Each light beam that is accurately incident on a and individually passed through each of the microphone mouth lenses is directly imaged on the photosensitive material 3 OK of the printed wiring board material 30.
- the image of the two-dimensional pattern J 2 formed on the photosensitive material 30 K matches the target two-dimensional pattern.
- the correction operation as described above is performed by correcting the two-dimensional pattern, that is, the exposure pattern, and the purpose is to control the position of each beam to smooth the edge roughness.
- the shift direction correcting element 41 and the focus direction correcting element are set so that the image of the two-dimensional pattern J 2 formed on the photosensitive material 30 K matches the target two-dimensional pattern.
- the voltage applied between the electrodes of 42 is determined by the voltage applying unit 43
- the voltages are fixed by the voltage applying unit 43, and the imaging positions of the light beams are fixed.
- the printed wiring board material 30 is conveyed in the sub-scanning direction by the stage driving device of the first embodiment, and a desired two-dimensional pattern is exposed on the photosensitive material 3 OK.
- the light source used in the exposure apparatus 200 is a GaN semiconductor laser.
- a solid laser, a gas laser, or the like can be used.
- the wavelength is about 355 nm YAG laser combined with SHG, approximately 355 nm YLF laser combined with SHG, approximately 266 nm YAG laser combined with SHG, approximately ⁇ wavelength
- An excimer laser with a wavelength of 2 48 nm or an excimer laser with a wavelength of about 19.3 nm can be used.
- a mercury lamp or the like can be adopted as the light source.
- the above exposure method is not limited to the case of exposing a wiring pattern, but can be applied to any pattern or image exposure.
- the imaging position correction means which is the imaging position control means
- the imaging position control means is a liquid crystal element in which a refractive index distribution is generated by electrical control.
- the present invention is not limited to such a case. If the image formation position of each light beam is controlled individually for each light beam so that the image of the two-dimensional pattern formed on the photosensitive material matches the target two-dimensional pattern, the image formation position control is performed. Any method may be adopted as the means.
- V is described as control regarding the position of the light beam, that is, the light beam, but by combining the liquid crystal element used in the liquid crystal display and the polarizing plate, the individual light beams can be controlled. It is also possible to change the power. By using this, it becomes possible to control the exposure light intensity of individual light beams at a relatively low speed, and to correct the power shading (output fluctuation) of the exposure head.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/814,745 US20090021656A1 (en) | 2005-01-25 | 2006-01-24 | Exposure method and apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005-016448 | 2005-01-25 | ||
| JP2005016448A JP2006208432A (ja) | 2005-01-25 | 2005-01-25 | 露光方法および装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006080474A1 true WO2006080474A1 (ja) | 2006-08-03 |
Family
ID=36740494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2006/301386 Ceased WO2006080474A1 (ja) | 2005-01-25 | 2006-01-24 | 露光方法および装置 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20090021656A1 (ja) |
| JP (1) | JP2006208432A (ja) |
| KR (1) | KR20070107020A (ja) |
| CN (1) | CN101107573A (ja) |
| WO (1) | WO2006080474A1 (ja) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8451427B2 (en) | 2007-09-14 | 2013-05-28 | Nikon Corporation | Illumination optical system, exposure apparatus, optical element and manufacturing method thereof, and device manufacturing method |
| US20090091730A1 (en) * | 2007-10-03 | 2009-04-09 | Nikon Corporation | Spatial light modulation unit, illumination apparatus, exposure apparatus, and device manufacturing method |
| JP5267029B2 (ja) * | 2007-10-12 | 2013-08-21 | 株式会社ニコン | 照明光学装置、露光装置及びデバイスの製造方法 |
| SG185313A1 (en) * | 2007-10-16 | 2012-11-29 | Nikon Corp | Illumination optical system, exposure apparatus, and device manufacturing method |
| CN101681123B (zh) * | 2007-10-16 | 2013-06-12 | 株式会社尼康 | 照明光学系统、曝光装置以及元件制造方法 |
| US8379187B2 (en) | 2007-10-24 | 2013-02-19 | Nikon Corporation | Optical unit, illumination optical apparatus, exposure apparatus, and device manufacturing method |
| US9116346B2 (en) * | 2007-11-06 | 2015-08-25 | Nikon Corporation | Illumination apparatus, illumination method, exposure apparatus, and device manufacturing method |
| EP2282188B1 (en) | 2008-05-28 | 2015-03-11 | Nikon Corporation | Illumination optical system and exposure apparatus |
| IL198719A0 (en) * | 2009-05-12 | 2010-02-17 | Orbotech Ltd | Optical imaging system |
| JP6020834B2 (ja) * | 2011-06-07 | 2016-11-02 | 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 |
| CN112004000A (zh) * | 2019-05-27 | 2020-11-27 | 三赢科技(深圳)有限公司 | 发光装置及应用其的图像采集装置 |
| JP7465636B2 (ja) * | 2019-07-08 | 2024-04-11 | 株式会社Screenホールディングス | 描画装置 |
| JP7449700B2 (ja) * | 2020-01-20 | 2024-03-14 | 株式会社ミツトヨ | 焦点距離可変光学系 |
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- 2006-01-24 CN CNA2006800031766A patent/CN101107573A/zh active Pending
- 2006-01-24 KR KR1020077017800A patent/KR20070107020A/ko not_active Withdrawn
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20070107020A (ko) | 2007-11-06 |
| US20090021656A1 (en) | 2009-01-22 |
| CN101107573A (zh) | 2008-01-16 |
| JP2006208432A (ja) | 2006-08-10 |
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