WO2004049410A1 - 露光装置及び露光方法 - Google Patents
露光装置及び露光方法 Download PDFInfo
- Publication number
- WO2004049410A1 WO2004049410A1 PCT/JP2003/014973 JP0314973W WO2004049410A1 WO 2004049410 A1 WO2004049410 A1 WO 2004049410A1 JP 0314973 W JP0314973 W JP 0314973W WO 2004049410 A1 WO2004049410 A1 WO 2004049410A1
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- Prior art keywords
- solid
- light source
- exposure apparatus
- state light
- light
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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
- G03F7/70008—Production of exposure light, i.e. light sources
- G03F7/7005—Production of exposure light, i.e. light sources by multiple sources, e.g. light-emitting diodes [LED] or light source arrays
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0009—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only
- G02B19/0014—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only at least one surface having optical power
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
- G02B19/0066—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED in the form of an LED array
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70058—Mask illumination systems
- G03F7/70066—Size and form of the illuminated area in the mask plane, e.g. reticle masking blades or blinds
Definitions
- the present invention relates to an exposure apparatus and an exposure method used in a manufacturing process of a semiconductor device, a liquid crystal display device, an imaging device, a thin-film magnetic head, and other micro devices.
- a liquid crystal display device which is one of the micro devices, is usually formed by patterning a transparent thin-film electrode on a glass substrate (plate) into a desired shape using a photolithography technique, and switching elements such as TFT (Thin Film Transistor). It is manufactured by forming electrode wiring.
- a projection exposure apparatus that projects and exposes an original pattern formed on a mask onto a plate coated with a photosensitive agent such as a photoresist through a projection optical system. Used.
- stepper which exposes other shot areas in such a manner, has been frequently used.
- a liquid crystal display element has been required to have a large area, and accordingly, a projection exposure apparatus used in a photolithography process has been desired to enlarge an exposure area.
- a projection exposure apparatus used in a photolithography process has been desired to enlarge an exposure area.
- designing and manufacturing a large projection optical system in which the residual aberration is reduced as much as possible increases costs.
- a slit-shaped illumination light whose length in the longitudinal direction is set to about the same as the effective diameter of the projection optical system on the object plane side (mask side) of the projection optical system Is irradiated onto the mask, and the slit-shaped light passing through the mask is irradiated on the plate via the projection optical system.
- the mask is moved relative to the projection optical system and scanned, and a part of the pattern formed on the mask is sequentially transferred to one shot set on the plate.
- a so-called step-and-scan projection exposure apparatus has been devised in which the exposure is performed in the same manner by moving the other shot area.
- a small partial projection optical system has a predetermined interval in a direction orthogonal to the scanning direction (non-scanning direction).
- a so-called multi-lens type projection optics in which a first array in which a plurality of arrays are arranged in a scanning direction and a second array in which a partial optical system is arranged between the arrays of the partial projection optical systems are arranged in the scanning direction.
- a projection exposure apparatus having a system has been devised (for example, Japanese Patent Application Laid-Open No. 7-57986).
- a mercury lamp or the like is mainly used in an ultraviolet region having a wavelength of about 360 nm. Since the life of the mercury lamp is approximately 500 to 100 h, the lamp needs to be replaced periodically, which is a heavy burden on the exposure apparatus user. In addition, high power is required to ensure high illuminance, and measures to generate heat are required.Therefore, there are problems with high running costs and the risk of rupture due to factors such as aging. Was. On the other hand, light-emitting diodes have higher luminous efficiency than mercury lamps and the like, and therefore have the features of power saving and small heat generation, and can realize a significant reduction in running costs.
- UV-LEDs that achieve a high optical output of about 10 Omw at a wavelength of 365 nm have been developed.
- An object of the present invention is to provide an exposure apparatus provided with a solid-state light source and an exposure method using the exposure apparatus. Disclosure of the invention
- An exposure apparatus of the present invention is an exposure apparatus that guides a light beam emitted from a light source to a mask, and transfers a pattern of the mask onto a photosensitive substrate, wherein the exposure apparatus is disposed in an optical path between the light source and the mask. Illuminating the mask based on the luminous flux from the light source
- the light source includes a solid-state light source unit having a plurality of solid-state light sources arranged so that the illuminance value on the photosensitive substrate is 3 OmW / cm 2 or more. It is characterized by the following.
- the light source is provided with a solid-state light source unit having a plurality of solid-state light sources arranged so that the illuminance value on the photosensitive substrate is 30 W / cm 2 or more. Can be set to a value required for a practical exposure apparatus, and the throughput as a practical exposure apparatus can be secured.
- the average radiance is 100 OmW / (cm 2 2) within a range of ⁇ 1 ° around a light beam having the highest radiation intensity among light beams emitted from the solid-state light source. sr) or more.
- a solid-state light source having an average radiance of 1000 mWZ (cm 2 sr) or more within a range of ⁇ 1 ° around the light beam with the highest radiation intensity among the emitted light beams Therefore, many light beams can be irradiated onto the photosensitive substrate via the projection optical system, and the throughput of the exposure apparatus can be improved.
- the average radiance is the average value of the luminance at all angles within ⁇ 1 °.
- the exposure apparatus of the present invention is an exposure apparatus for transferring a pattern of a mask onto a photosensitive substrate, the solid-state light source unit having a plurality of solid-state light sources, and a light beam emitted from the solid-state light source unit being applied to the mask.
- the solid-state light source has an average radiance of 100 OmWZ (cm 2 ⁇ ) within a range of ⁇ 1 ° around a light beam having the highest radiation intensity among emitted light beams. sr) or more.
- a solid-state light source having an average radiance of 100 OmWZ (cm 2 • sr) or more within a range of ⁇ 1 ° around the light beam with the highest emission intensity among emitted light beams is used. Therefore, many light beams can be irradiated onto the photosensitive substrate via the projection optical system, and the throughput of the exposure apparatus can be improved.
- the exposure apparatus of the present invention is characterized in that the solid-state light source has an output of at least 1 OmW / piece. According to this exposure apparatus, the output of each solid-state light Is large, it is possible to secure the image plane illuminance required for a practical exposure apparatus.
- the area of the light emitting portion of the solid-state light source is 1 cm 2 or less.
- the light emitting part here refers to the part of the solid-state light source that actually emits light, and is independent of the package size.
- the plurality of solid-state light sources of the solid-state light source unit are arranged so as to be one cm 2 or more.
- the image plane illuminance required for a practical exposure apparatus can be secured.
- the distribution of light beams having half the radiation intensity with respect to the light beam having the highest radiation intensity among the light beams emitted from the solid-state light source is centered on the light beam having the highest radiation intensity. It is characterized by being ⁇ 2 ° ( ⁇ 35 mrad) or more.
- the distribution of rays that emit half of the intensity of the emitted light is half of the intensity of the emitted light, and is 2 ° ( ⁇ 35 mrad) Since the solid-state light source described above is provided, a large amount of light can be irradiated onto the photosensitive substrate via the projection optical system, and the throughput of the exposure apparatus can be improved.
- the exposure apparatus may further include: forming an angle between a light beam having a half radiation intensity with respect to a light beam having the highest radiation intensity of the light beams emitted from the solid-state light source and the light beam having the highest radiation intensity. (rad), and when the number of the solid-state light sources per 1 cm 2 is n, the following condition is satisfied: 0 2 X n ⁇ 0.002.
- the angle between the light beam having half the radiation intensity and the light beam having the highest radiation intensity with respect to the light beam having the highest radiation intensity among the emitted light beams is defined as 0 (rad), and 1 cm 2
- n the number of solid light sources per unit
- Irradiation can be performed on the photosensitive substrate, and the throughput of the exposure apparatus can be improved.
- the exposure apparatus of the present invention is characterized in that a half width of a wavelength of light emitted from the solid-state light source is 20 nm or less on earth.
- the exposure apparatus of the present invention is characterized by further comprising a projection optical system for forming a pattern image of the mask on the photosensitive substrate.
- An exposure apparatus is an exposure apparatus for transferring a pattern of a mask onto a photosensitive substrate, the solid-state light source having a plurality of solid-state light sources, and an optical path between the solid-state light source unit and the mask.
- An illumination optical system that illuminates the mask based on a light beam from the solid-state light source unit; and a projection optical system that forms a pattern image of the mask on the photosensitive substrate based on a light beam from the mask.
- a half-width of a wavelength of a light emission spectrum of the solid-state light source is not more than 20 nm, and the projection optical system includes a catadioptric optical system.
- the half width of the wavelength of the light emission spectrum of the solid-state light source is not more than 20 ⁇ m, the amount of chromatic aberration generated by the catadioptric projection optical system can be reduced.
- an angle between a light beam having a half radiation intensity with respect to a light beam having the highest radiation intensity of the emitted light beam and the light beam having the highest radiation intensity is defined as ⁇ (rad).
- the angle between the light beam having half the radiation intensity and the light beam having the highest radiation intensity with respect to the light beam having the highest radiation intensity among the emitted light beams is set to 0 (rad), and the projection optical system
- the magnification of is and the numerical aperture of the projection optical system is NA
- the projection optical system includes a plurality of projection optical units having different visual fields on the mask
- the illumination optical system includes the plurality of projection optical units.
- a plurality of illumination optical units respectively corresponding to the plurality of visual fields, and each of the plurality of illumination optical units includes the solid-state light source unit.
- the exposure apparatus of the present invention is connected to the solid-state light source units provided in the plurality of illumination optical units, respectively, so that the light output of the plurality of solid-state light units can be set for each illumination optical unit.
- a light source output setting unit is provided.
- the exposure apparatus of the present invention further includes an illuminance measuring means for measuring the illuminance on the photosensitive substrate, and the light source output setting unit is configured to determine the illuminance of each of the illumination optical units based on a measurement result of the illuminance measuring unit.
- the outputs of the plurality of solid-state light sources provided in each of the plurality of solid-state light source units are individually set.
- this exposure apparatus it is possible to perform control such as making the light output of each illumination optical unit uniform and to suppress the occurrence of uneven exposure.
- the exposure apparatus further includes a substrate stage on which the photosensitive substrate is placed, and the illuminance measuring unit is installed on the substrate stage.
- An output measuring unit that measures an output of the illumination optical system; and a control unit that controls a light output of the solid-state light source unit based on a result measured by the output measuring unit.
- the exposure apparatus of the present invention is characterized in that the output measuring means includes an illuminance measuring means for measuring the illuminance on the photosensitive substrate.
- the exposure apparatus of the present invention when the total power of the plurality of solid-state light source is A (W), the total power of the illumination light for illuminating the mask is B (W),
- the plurality of solid-state light sources are arranged in an array. It is characterized by the following. According to this exposure apparatus, since a plurality of solid-state light sources are arranged in an array, integration of the plurality of solid-state light sources can be achieved, which contributes to downsizing of the solid-state light source unit.
- the exposure apparatus is characterized in that the solid-state light source unit includes a plurality of the solid-state light sources arranged in a two-dimensional array. According to this exposure apparatus, since the plurality of solid-state light sources are arranged in a two-dimensional array, the size of the solid-state light source unit can be further reduced.
- the exposure apparatus further includes an optical integrator having a plurality of optical surfaces in which the illumination optical system is two-dimensionally arranged, and the optical surface on the exit surface side of the optical integrator is provided.
- the overall shape of the effective area and the shape of the light emitting portions of the plurality of solid state light sources are substantially similar.
- the entire shape of the effective area of the optical surface on the exit surface side of the optical integrator and the shape of the light-emitting portions of the plurality of solid-state light sources are substantially similar, the light is emitted from the solid-state light source. Light can be used efficiently, and the illuminance on the image plane can be increased.
- the solid-state light source unit includes a plurality of fibers, and each of the incident ends of the plurality of fibers is optically connected to the plurality of solid-state light sources. .
- the degree of freedom in the arrangement of the solid-state light sources can be increased, and the arrangement of the emission ends of the plurality of fibers can be easily made into an arbitrary shape.
- the light beam emitted from the solid-state light source is directly incident on the incident ends of the plurality of fibers. According to this exposure apparatus, a light beam emitted from a solid-state light source can be made incident on a fiber with a simple configuration without complicating the configuration.
- the exposure apparatus is characterized in that the exposure apparatus further comprises a condensing optical system arranged between the solid-state light source in the solid-state light source unit and an incident end of the fiber.
- the maximum value of the size of the light emitting portion of the solid-state light source is ⁇
- the sine of the emission angle of light having the maximum emission angle among the divergent light from the solid-state light source is ⁇ 1.
- the core diameter of the fiber is D
- the optical fiber can capture light.
- the light beam emitted from the solid-state light source can be incident on the fiber without waste.
- the exposure apparatus further includes an optical integrator having a plurality of optical surfaces in which the illumination optical system is two-dimensionally arranged, and the optical surface on the exit surface side of the optical integrator is provided.
- the shape of the effective area and the overall shape of the emission ends of the plurality of fibers are substantially similar.
- the shape of the effective area of the optical surface on the exit surface side of the optical integrator is substantially similar to the overall shape of the exit ends of the plurality of fibers, so that the illumination light can be used efficiently. it can.
- the exposure apparatus of the present invention is characterized in that the plurality of solid-state light sources include at least first and second solid-state light sources having output characteristics different from each other.
- desired output characteristics can be obtained by combining solid-state light sources having different output characteristics.
- the exposure apparatus of the present invention is characterized by further comprising an antistatic means for preventing static electricity from being charged. According to this exposure apparatus, it is possible to prevent the solid-state light source from being damaged by static electricity.
- the exposure apparatus of the present invention is characterized in that the light source emits illumination light with an output that is equal to or less than a rated output. According to this exposure apparatus, since the illumination light is emitted at an output equal to or less than the rated output, the life of the solid-state light source can be extended.
- An exposure apparatus further includes: a scanning unit configured to relatively scan a positional relationship between a light beam emitted from the light source and the mask along a scanning direction; and a scanning unit arranged at a position substantially conjugate with the mask.
- a variable stop capable of changing the opening width in the scanning direction; and control for variably controlling the opening width in the scanning direction of the variable stop based on information on a relative position between a light beam emitted from the light source and the mask. Means is further provided.
- exposure is performed in order to variably control the aperture width of the variable aperture in the scanning direction based on information on the relative position between the light beam emitted from the light source and the mask. It is possible to prevent information attached to an unnecessary mask, a mask pattern that does not need to be exposed, and the like from being transferred onto the photosensitive substrate.
- exposure is performed using an exposure device that secures the value of image plane illuminance required for practical exposure, so that throughput as a practical exposure method can be secured.
- FIG. 1 is a perspective view showing a schematic configuration of the entire exposure apparatus according to the first embodiment.
- FIG. 2 is a diagram illustrating a configuration of the light source according to the first embodiment.
- FIG. 3 is a perspective view showing an overall schematic configuration of an exposure apparatus according to the second embodiment.
- FIG. 4 is a side view of the illumination optical system according to the second embodiment.
- FIG. 5 is a schematic perspective view of an illumination optical system according to the second embodiment.
- FIG. 6 is a diagram illustrating a configuration of the fiber light source according to the embodiment.
- FIG. 7 is a diagram illustrating a configuration of another fiber light source according to the embodiment.
- FIG. 8A is a diagram for explaining a shape of a beam profile emitted from the light source according to the embodiment.
- FIG. 8B is a diagram for explaining the shape of the beam profile emitted from the light source according to the embodiment.
- FIG. 8C is a diagram for explaining the shape of the beam profile emitted from the light source according to the embodiment.
- FIG. 9A is a diagram illustrating a shape of an emission end of the fiber light source according to the embodiment.
- FIG. 9B is a diagram illustrating a shape of an emission end of the fiber light source according to the embodiment.
- FIG. 10 shows the shape of the exit end of the fiber light source and the fly eye according to the embodiment. It is a figure which shows that the shape of the element of an integrator is similar.
- FIG. 11 is a diagram for explaining conditions for taking light emitted from the solid-state light source into the optical fiber without waste in the fiber light source according to the embodiment.
- FIG. 12 is a diagram illustrating a configuration from the exit end of the fiber light source to the fly-eye integrator according to the embodiment.
- FIG. 13 is a diagram illustrating a shape of one element of the fly-eye integrator according to the embodiment.
- FIG. 14 is a diagram illustrating a shape of an emission end of the fiber light source according to the embodiment.
- FIG. 15 is a graph showing a state in which variations in output characteristics of each solid-state light source according to the embodiment are averaged.
- FIG. 16 is a diagram illustrating a configuration of the scanning exposure apparatus according to the embodiment.
- FIG. 17 is a diagram illustrating four movable blades provided in the scanning exposure apparatus according to the embodiment.
- FIG. 18 is a diagram illustrating a configuration of an exposure apparatus including an antistatic unit according to the embodiment.
- FIG. 19 is a flowchart of a method for manufacturing a semiconductor device as a micro device according to the embodiment.
- FIG. 20 is a flowchart of a method for manufacturing a liquid crystal display element as a micro device according to the embodiment.
- FIG. 1 is a diagram showing a schematic configuration of a projection exposure apparatus according to the first embodiment.
- the projection exposure apparatus shown in FIG. 1 includes a light source (solid light source unit) 1 instead of a light source composed of a high-pressure mercury lamp.
- the light source 1 is a light-emitting diode (a light-emitting diode array formed by arranging solid-state light rays in an array, and a light source including a conventional mercury lamp and an elliptical mirror having a reflecting surface having a spheroidal surface is used.
- the second focal position of the elliptical mirror is a position optically conjugate with a front focal position of a condenser optical system 7 described later.
- the position where 1 is arranged may be near a position optically conjugate with the front focal position of the condenser optical system 7.
- FIG. 2 is a diagram for explaining the configuration of the light source 1.
- the light source 1 has a plurality of light emitting diodes (solid light sources) lb arranged in an array on a rectangular substrate 1a.
- the light emitting diodes 1b are arranged in an array on the substrate la such that the illuminance value on a plate (photosensitive substrate) P described later is 3 OmWZcm 2 or more.
- the light emitting diode lb in the range of the light beam ⁇ 1 ° around the highest radiation intensity is high rays of the light beam emitted, the average radiance is 1 OO OmW / (cm 2 ⁇ sr) or more of Arranged on substrate 1a.
- the light emitting diodes 1b having an output of at least 10 mWZ or more are arranged on the substrate 1a.
- the light emitting diodes 1b having a light emitting area of 1 cm 2 or less are arranged on the substrate 1a.
- a plurality of light emitting diodes 1b are arranged on the substrate 1a such that one light emitting diode 1b is equal to or more than Z cm 2 .
- the distribution of the light beam that has half the intensity of the emitted light is half the intensity of the emitted light, ⁇ 2 around the light beam with the highest intensity. These are arranged on the substrate 1a. Further, the light emitting diode 1b sets the angle between the light beam having half the emission intensity of the emitted light beam and the light beam having the highest emission intensity to 0 (rad), and When the number of light emitting diodes 1 b per cm 2 is n,
- the light emitting diodes 1b whose emission light (emission spectrum) has a half-value width of ⁇ 20 nm or less are arranged on the substrate 1a.
- the light beam from the light source 1 arranged at a position optically conjugate with the front focal position of the condenser optical system 7 is converted into a substantially parallel light beam by the collimator lens 3, and then the fly-eye lens 4 as an optical integrator Incident on.
- the fly-eye lens 4 converts a large number of lens elements having positive refractive power into light It is configured by arranging vertically and horizontally and densely so that the axis is parallel to the reference optical axis AX.
- Each lens element constituting the fly-eye lens 4 has a rectangular cross-section similar to the shape of the illumination field to be formed on the mask (and, consequently, the shape of the exposure area to be formed on the plate).
- the optical surface on the entrance side of each lens element constituting the fly-eye lens 4 is formed in a spherical shape with the convex surface facing the incident side, and the optical surface on the exit side is formed in a spherical shape with the convex surface facing the exit side. Is formed.
- the light beam incident on the fly-eye lens 4 is split into wavefronts by a number of lens elements, and one light source image is formed on the rear focal plane of each lens element. That is, on the rear focal plane of the fly's eye lens 4, a substantial surface light source, ie, a secondary light source, composed of a large number of light source images is formed. Note that the shape of the effective area of the optical surface on the lens element exit surface side of the fly-eye lens 4 and the shape of the light emitting portions of the plurality of solid-state light sources are substantially similar.
- the luminous flux from the secondary light source formed on the rear focal plane of the fly's eye lens 4 is incident on the ⁇ stop 5 arranged in the vicinity.
- the ⁇ stop 5 is disposed at a position optically substantially conjugate with an entrance pupil plane of the projection optical system PL described later, and has a variable aperture for defining a range contributing to illumination of the secondary light source.
- the ⁇ stop 5 determines the illumination condition by changing the aperture diameter of the variable aperture.
- the ⁇ value (the ratio of the aperture of the secondary light source image on the pupil plane to the aperture diameter of the pupil plane of the projection optical system) ) Is set to the desired value.
- the light from the secondary light source through the ⁇ stop 5 is condensed by the condenser optical system 7 via the mirror 6 and then uniformly illuminates the mask ⁇ on which a predetermined pattern is formed in a superimposed manner.
- the collimating lens 3, the fly's eye lens 4, the ⁇ stop 5, the mirror 6, and the condenser optical system 7 constitute an illumination optical system.
- the light beam transmitted through the pattern of the mask ⁇ forms an image of the mask pattern on a plate P as a photosensitive substrate via the projection optical system PL.
- an illuminance of SO mWZ cm 2 or more is obtained on the plate P (surface to be irradiated) by the light source 1 composed of a plurality of light emitting diodes (solid light sources). Further, with the light source 1, the illuminance unevenness on the plate P (the surface to be irradiated) can be suppressed within ⁇ 20% of the average value (reference value).
- the illuminance unevenness I (%) with respect to the reference value of the illuminance on the plate P is When the maximum value is I max (W / cm 2 ) and the minimum value of the illuminance on the plate P is I min (W / cm 2 ), it is defined by the following equation.
- the light source 1 ⁇ (Ima X-I min) / (I max + I min) ⁇ X 100 (%)
- the light source 1 emits illumination light at an output less than the rated output. The injection is done. Therefore, the life of the solid state light source can be extended.
- the pattern of the mask M is sequentially exposed in each exposure area of the plate P. .
- the plate P is mounted on a plate stage PS, and an illuminance sensor (illuminance measuring means) 8 is arranged on the plate stage PS.
- a beam splitter 9 is disposed in the optical path between the fly's eye lens 4 and the mirror 6, and the light reflected by the beam splitter 9 enters the integrator sensor 10.
- the detection signal from the integrator sensor 10 is output to the control unit 11. Further, a detection signal from the illuminance sensor 8 is also output to the control unit 11.
- the relationship between the detection signal of the integrator sensor 10 and the illuminance of the exposure light on the plate P is measured with high precision in advance and stored in a memory in the control unit 11.
- the control unit 11 is configured to monitor the illuminance (average value) of the exposure light to the plate P and its integral value (average value of the integrated exposure amount) indirectly from the detection signal of the integrator sensor 10. . Then, the controller 11 calculates an integral value of the illuminance of the exposure light on the plate P via the integrator sensor 10 during the exposure. The control section 11 sequentially calculates the integrated value of the illuminance, and sets and controls the output of the light source 1 so that an appropriate exposure amount is obtained on the plate P according to the result. The control unit 11 controls the output of the light source 1 also based on the output from the illuminance sensor 8.
- the output control of the light source 1 can be performed not only for the entire light source 1 but also for each light emitting diode constituting the light source 1. Note that the detection result by the illuminance sensor 8 and the detection result by the integrator sensor 10 are also displayed on the display unit 12.
- a light beam having a radiation intensity half that of the light beam having the highest radiation intensity of the light beams emitted from the light source 1 and a light beam having the highest radiation intensity are obtained.
- the angle formed is 0 (rad)
- the magnification of the projection optical system PL is, and the numerical aperture of the projection optical system PL is NA,
- FIG. 3 is a perspective view showing an overall schematic configuration of an exposure apparatus according to the second embodiment.
- the liquid crystal formed on the mask M while the mask M and the plate (substrate) P are relatively moved with respect to a projection optical system composed of a plurality of catadioptric projection optical units.
- a step-and-scan exposure apparatus that transfers an image of a display element pattern DP onto a plate P as a photosensitive substrate coated with a photosensitive material (resist) will be described as an example.
- the XYZ orthogonal coordinate system In the XYZ orthogonal coordinate system, the X axis and the Y axis are set to be parallel to the plate P, and the z axis is set to a direction orthogonal to the plate P.
- the XY plane In the XYZ coordinate system in the figure, the XY plane is actually set as a plane parallel to the horizontal plane, and the Z axis is set vertically upward.
- the direction (scanning direction) for moving the mask M and the plate P is set in the X-axis direction.
- the exposure apparatus of this embodiment is provided for uniformly illuminating a mask M supported in parallel to the XY plane on a mask stage (not shown in FIG. 3) MS via a mask holder (not shown).
- g unit SU1 to SU5 and illumination optical system composed of illumination optical unit IL1 to IL5 corresponding to each solid-state light source unit SU1 to SU5.
- the solid-state light source units SU1 to SU5 have the same configuration as the light source 1 (see FIG. 2) in the first embodiment. Since the solid-state light source units SU2 to SU5 have the same configuration as the solid-state light source unit SU1, the solid-state light source unit SU1 will be described as a representative.
- the solid-state light source SU1 has a rectangular substrate 1a, and a plurality of light-emitting diodes (solid-state light sources) 1b are arranged in an array on the substrate 1a.
- the light emitting diodes 1b are arranged in an array on the substrate 1a such that the value of illuminance on a plate (photosensitive substrate) P described later is 30 mW / cm 2 or more.
- the light-emitting diode lb has a substrate with an average radiance of 1000 mW / (cm 2 -sr) or more within a ⁇ 1 ° luminous flux centered on the light beam with the highest radiation intensity among the emitted luminous flux. Arrayed on 1a.
- the light emitting diodes 1b having an output of at least 10 mWZ or more are arranged on the substrate 1a.
- the light emitting diodes lb having a light emitting area of 1 cm 2 or less are arranged on the substrate 1a.
- a plurality of light emitting diodes 1b are arranged on the substrate 1a so as to have one light emitting diode / cm 2 or more.
- the light-emitting diode lb is the light beam with the highest radiation intensity of the emitted light flux.
- the distribution of the light beam that has half the radiation intensity with respect to that of the light beam having the highest radiation intensity is ⁇ 2 ° or more centered on the substrate 1a. Further, the light emitting diode 1b sets the angle between the light beam having half the emission intensity of the emitted light beam and the light beam having the highest emission intensity as ⁇ (rad), and Assuming that the number of light emitting diodes 1 b per cm 2 is n,
- the light emitting diodes 1b whose emission light (emission spectrum) has a half width of a wavelength of ⁇ 20 nm or less are arranged on the substrate 1a.
- FIG. 4 is a side view of the solid light source unit SU1 and the illumination optical unit IL1, and the same members as those shown in FIG. 3 are denoted by the same reference numerals. Note that the XYZ rectangular coordinate system shown in this figure is the same as the rectangular coordinate system shown in FIG.
- a collimator lens 20a, fly-eye integrator 21a, aperture stop 22a, half mirror 23a and condenser lens system 27a are in order.
- the configuration of the illumination optical units IL2 to IL5 is the same as the configuration of the illumination optical unit IL1, and a description thereof will be omitted.
- the divergent light beam emitted from the solid-state light source SUT SU 1 is converted into a substantially parallel light beam by the collimating lens 20a, and then enters the fly-eye integrator (optical integrator) 2la.
- the fly-eye integrator 21a is configured by arranging a large number of positive lens elements vertically and horizontally and densely so that the central axis thereof extends along the optical axis AX2. Therefore, the luminous flux incident on the fly-eye integrator 21a is split into wavefronts by a large number of lens elements, and then a light source image of the same number as the number of lens elements is provided on the side focal plane (that is, in the vicinity of the exit plane). The next light source is formed.
- a substantial surface light source is formed on the rear focal plane of the fly-eye integrator 21a.
- the shape of the effective area of the optical surface on the exit surface side of the fly-eye 'integrator 21a one element constituting the fly-eye' integrator 21a shown by hatching in the figure
- the shape of the optical surface on the exit side of the solid state light source unit SU 1 (The shape of the light emitting portion formed by the light emitting diode).
- the luminous flux from a number of secondary light sources formed on the rear focal plane of the fly-eye integrator 21a is converted to an aperture stop 22a located near the rear focal plane of the fly-eye integrator 21a.
- the light beam reflected by the half mirror 23a enters the illuminance sensor 25a via the lens 24a.
- the illuminance sensor 25a is a sensor for detecting the illuminance at a position optically conjugate with the plate P.
- the illuminance sensor 25a allows the illuminance sensor 25a to maintain the plate P without reducing the throughput even during exposure.
- the upper illuminance can be detected.
- the detection value of the illuminance sensor 25a is input to the main control system 26.
- the aperture stop 22a is disposed at a position optically substantially conjugate with the pupil plane of the corresponding projection optical unit PL1, and has an opening for defining the range of the secondary light source contributing to illumination.
- the aperture of the aperture stop 22a may have a fixed aperture diameter, or may have a variable aperture diameter.
- the description will be made assuming that the aperture of the aperture stop 22a is variable. By changing the aperture diameter of the variable aperture, the aperture stop 22 a determines the illumination condition.
- ⁇ value (the aperture diameter of the pupil plane of each of the projection optical units PL 1 to PL 5 constituting the projection optical system PL) (The ratio of the aperture of the secondary light source image on the pupil plane to the aperture) is set to a desired value.
- the light beam passing through the condenser lens system 24a illuminates the mask M on which the pattern DP is formed in a superimposed manner.
- the light beams emitted from the solid light source units SU2 to SU5 illuminate the mask M in a superimposed manner via the illumination optical units IL2 to IL5. That is, the illumination optical units IL1 to IL5 constituting the illumination optical system illuminate a plurality of (five in FIG. 3) trapezoidal regions arranged on the mask M in the Y-axis direction.
- the main control system 26 is based on the illuminance detected by the illuminance sensor 25a of the illumination optical unit IL1 and the illuminance detected by the illuminance sensors of the illumination optical unit IL2 to IL5.
- Each solid-state light source unit SU2 to SU5 provided for each illumination optical unit IL1 to IL5 so that the illuminance at the time of mask M illumination by each illumination optical unit IL1 to IL5 is uniform.
- Light source output to set the light output of 5 A control signal is output to the setting unit.
- the light from each illuminated area on the mask M is arranged along the Y-axis direction so as to correspond to each illuminated area (a total of five in Fig. 3).
- the light enters the projection optical system PL composed of 5.
- the configuration of each of the projection optical units P L1 to P L5 is the same as each other.
- the light passing through the projection optical system PL composed of the plurality of projection optical units PL1 to PL5 is supported on a plate stage (not shown) in parallel to the XY plane via a plate holder (not shown).
- An image of the pattern DP is formed on the prepared plate P.
- the solid-state light source units SU1 to SU5 composed of the plurality of light-emitting diodes (solid-state light sources) provide an illuminance of SO mWZ cm 2 or more on the plate P (surface to be irradiated).
- the solid-state light source units SU 1 to SU 5 can suppress uneven illuminance on the plate P (surface to be irradiated) to within ⁇ 20% of the average value.
- a storage device 28 such as a hard disk is connected to the main control system 26 described above, and an exposure data file is stored in the storage device 28.
- the exposure data file stores the processes required for exposing the plate P and the order of the processes. For each of the processes, information on the resist applied on the plate P (for example, the resist Spectral characteristics), required resolution, mask M to be used, correction amount of illumination optical system (illumination optical characteristic information), correction amount of projection optical system (projection optical characteristic information), and information on substrate flatness Etc. (so-called recipe data).
- the above-described mask stage MS is provided with a scanning drive system (not shown) having a long stroke for moving the mask stage MS along the X-axis direction which is the running direction. .
- a pair of alignment drive systems are provided for moving the mask stage MS by a minute amount along the Y-axis direction, which is a scanning orthogonal direction, and for rotating the mask stage MS by a minute amount about the Z-axis. I have.
- the position coordinates of the mask stage MS are measured by a laser interferometer (not shown) using a movable mirror, and the position is controlled.
- a similar drive system is provided on the plate stage. In other words, it has a long stroke to move the plate stage along the X-axis direction, which is the scanning direction.
- Scanning drive system (not shown)
- a pair of alignment drive systems (not shown) for moving the plate stage by a small amount along the Y-axis direction, which is a scanning orthogonal direction, and for rotating the plate stage by a small amount around the Z-axis. )
- the position coordinates of the plate stage are measured by a laser interferometer (not shown) using the movable mirror 31, and the position is controlled.
- a pair of alignment systems 32a and 32b are arranged above the mask M as means for relatively aligning the mask M and the plate P along the XY plane.
- an illuminance sensor 33 for detecting the illuminance of the illumination light on the plate P is provided on the plate stage, and the detected value is input to the main control system 26 of the illumination optical system IL.
- the main control system 26 controls the light output of each of the solid-state light sources units SU2 to SU5 based on the illuminance of the illumination light on the plate P detected by the illuminance sensor 33.
- the main control system 26 controls the light output of each solid-state light source unit SU2 to SU5 in addition to controlling the light output of each solid-state light source unit SU2 to SU5. This can also be performed by controlling the light output of each light emitting diode.
- the projection drive unit PL1 to PL5 is formed by the scanning drive system on the mask stage MS and the scan drive system on the plate stage.
- the entire pattern area on the mask M becomes the exposure area on the plate P.
- the whole image is transferred (scanning exposure).
- a light beam having half the intensity of the light beam having the highest radiation intensity among the light beams emitted from the light emitting diode 1b constituting the solid-state light source unit, and a light beam having the highest radiation intensity are obtained.
- the angle formed is 0 (rad)
- the magnification of the projection optical system PL is, and the numerical aperture of the projection optical system PL is NA,
- the light source since the light source includes the solid-state light source unit in which a plurality of light-emitting diodes (solid-state light sources) are arranged in an array, the image plane illuminance is required for a practical exposure apparatus. And a throughput as a practical exposure apparatus can be secured.
- the exposure apparatus of this embodiment since the light source includes a plurality of solid-state light sources arranged in an array, the size of the exposure apparatus can be reduced. Further, a mechanical shutter for controlling irradiation and blocking of the exposure light is not required, and the structure of the apparatus can be simplified. Further, it is possible to eliminate the possibility that the vibration generated when the mechanical shutter is operated adversely affects the exposure.
- the light source is provided with a plurality of solid light sources arranged in an array, the life of the light source can be extended as compared with a conventional mercury lamp or the like. In addition, power saving and low running cost can be realized. Further, control of the light output of the light source can be easily performed.
- a fly-eye lens as an optical integrator is used for the illumination optical system.
- a fly-eye lens is used for the illumination optical system.
- an integrator is used, a mouth-type integrator or a cylinder-type integrator may be used instead.
- the shape of the light source be similar to the cross-sectional shape of the opening.
- the pitch of one cylinder lens constituting the cylinder-type integrator and the rectangular area formed by the pitch of the other cylinder lens that is arranged orthogonal to the pitch it is preferable that the shape of the light source (light emitting diode array) and the shape of the light source (light emitting diode array) be similar to each other.
- a step-and-repeat type projection exposure apparatus will be described as an example.
- a step-and-scan type projection exposure apparatus will be described.
- the present invention may be applied to a proximity type exposure device. In this case, since there is no projection optical system, the image plane illuminance can be increased.
- a solid-state light source unit is arranged for each illumination optical unit, and the solid-state light source units SU1 to SU5 are used as an illumination optical unit.
- Illumination light is supplied to the light source, but one solid-state light source unit is placed at the input end of a random light guide fiber composed of many fiber strands randomly, and emitted from each of the five output ends.
- the illumination light to be emitted may be made to enter the illumination optical units IL1 to IL5.
- a light emitting diode is used as a solid state light source, but other types of solid state light sources such as a laser diode may be used.
- a solid-state light source chip having a plurality of light-emitting points As the plurality of solid-state light sources, a solid-state light source chip having a plurality of light-emitting points, a solid-state light source chip array in which a plurality of chips are arranged in an array, and a plurality of light-emitting points on a single substrate It is also possible to use a type built in the product.
- the solid-state light source element may be inorganic or organic.
- the light source a fiber light source combining a plurality of solid light sources and a plurality of light guides (fibers) such as optical fibers provided corresponding to the respective solid light sources may be used. good.
- the light source 1 of the first embodiment is changed to a fiber light source, and the fiber light source is arranged such that the fiber emission end of the fiber light source is located at the position of the light emitting diode 1b of the light source 1.
- the solid light source units SU1 to SU5 of the second embodiment are changed to fiber light sources, and the fiber emission end of the fiber light source is located at the position of the light emitting diode 1b of the solid light source units SU1 to SU5. Position so that is located.
- FIG. 6 is a diagram showing a fiber light source 69 obtained by bundling a plurality of solid state light sources 71 and optical fibers 72 provided corresponding to the respective solid state light sources 71.
- the fiber light source 69 shown in FIG. 6 light emitted from the solid-state light source 71 is incident on the incident end of the optical fiber 72 and exits from the exit end of the optical fiber 72. That is, each incident end of the optical fiber 72 is optically connected to the solid-state light source 71.
- FIG. 7 is a diagram showing a solid-state light source 71, a lens (condensing optical system) 73 provided corresponding to each solid-state light source 71, and a fiber light source 70 in which a plurality of optical fibers 72 are bundled. It is.
- each incident end of the optical fiber 72 is optically connected to the solid-state light source 71.
- the beam profile 75 ( Figure 8A) can be shaped into a circular beam profile 76 (see Figures 8B and 8C).
- the shape of the emission end of the light source (arrangement shape of the emission end) into an optimal shape.
- it can be formed into a rectangular shape as shown in FIG. 9A or into a shape as shown in FIG. 9B.
- the fiber light source (arrangement shape of the emission end)
- the shape of the exit ends of multiple optical fibers is such that the shape of the bundled ends of the optical fibers 69, 70 and the shape of one element 81 of the fly-eye integrator 80 are similar to each other. Is also very easy to mold. Therefore, the illumination light can be used efficiently.
- FIG. 11 is a diagram showing one solid-state light source 71 of the fiber light source 70 shown in FIG. 7, a lens (condensing optical system) 13 and an optical fiber 72 provided corresponding thereto. It is.
- the numerical aperture of the light having the largest emission angle (the sine ( S in) of the maximum emission angle (half angle)) of the divergent light of the solid-state light source 71 is as follows.
- NA the maximum numerical aperture
- NA the maximum value of the size (diameter) of the light-emitting part of the solid-state light source 71 is ⁇
- the angle range in which the optical fiber 72 can capture light half angle
- the sine (sin) of the so-called optical fiber 72, the numerical aperture of NA 2 the optical fiber
- the condition of NA S ⁇ ⁇ ZD X NAl is satisfied.
- the light emitted from the solid-state light source 71 can be taken into the optical fiber 72 without any difficulty, and the light amount of the light emitted from the solid-state light source 71 can be maintained. It can be ejected from the exit end of 2.
- the maximum numerical aperture of the solid-state light source 71 is NA 1
- the maximum size (diameter) of the light-emitting portion of the solid-state light source 71 is ⁇
- the core at the entrance end of the quartz fiber is D
- the condition of 0.3 ⁇ / ⁇ ⁇ ⁇ 1 is satisfied.
- Fig. 12 shows the configuration from the exit ends of the fiber light sources 69 and 70 to the fly'eye integrator 80.
- Fig. 13 shows the shape of the entrance surface of one element 81 of the fly's eye integrator 80.
- Figure 14 shows a fiber light source 69,
- FIG. 7 is a view showing a shape of an emission end 83 of 70.
- the length of one of the entrance surfaces of the element 81 of 80 is a, the other is b, the length of the exit end 83 where a plurality of optical fibers 72 are bundled is A, and the other is B, where the focal length of the collimating lens 82 located between the optical fiber 72 and the fly-eye integrator 80 is f1, and the focal length of the fly-eye integrator 80 is f2, AX f 2Zf 1 ⁇ & 8> ⁇ f 2 / fl ⁇ b.
- the fiber light source is composed of m sets of optical fiber light sources 69 and 70 (m is a natural number)
- the total amount of light output from the m sets of optical fibers 72 is W
- the output end of the optical fiber 72 is when the core diameter was d
- [mX ⁇ d (f 2 / f 1) ⁇ 2 ⁇ / (4 X a X b)] it is desirable to satisfy the condition of XW ⁇ 30 (mW).
- the filling rate of the light source image with respect to one element 81 of the fly-eye integrator 80 can be made optimal, and practical illuminance as an exposure apparatus can be obtained.
- the light emitted from the exit end of the fiber light source 69, 70 The variation in the light output is averaged by increasing the number n of the solid-state light sources 71 to more than ( ⁇ / AW) 2 , and it is possible to provide fiber light sources 69 and 70 having a stable light output by the averaging effect. it can.
- FIG. 15 is a graph showing a state in which variations in output characteristics of each solid-state light source 71 are averaged.
- the AVE is obtained by averaging the solid-state light sources 71 having different output characteristics, respectively, and converting the average to a solid state.
- illumination light having a stable light output can be obtained by the averaging effect.
- FIG. 16 is a configuration diagram of a scanning exposure apparatus.
- This exposure apparatus is a scanning type exposure apparatus that transfers a mask pattern onto a plate while moving a mask stage and a substrate stage with respect to a projection optical system, and uses a synchronous blind (movable blind mechanism) 91. Have. In other respects, it has the same configuration as the exposure apparatus according to the first embodiment.
- the movable blind mechanism has four movable blades. It consists of BL1, BL2, BL3 and BL4. The edges of the movable blades BL 1 and BL 2 determine the width of the aperture AP in the scanning exposure direction, and the edges of the movable blades BL 3 and BL 4 determine the length of the aperture AP in the non-scanning direction.
- the shape of the aperture AP defined by four respective edge of the movable Blanket BL 1 ⁇ BL 4 is defined to be encompassed in a circular image field IF of the projection lens PL n
- the illumination light that has passed through the opening of the fixed blind BL0 and the opening AP of the movable brand mechanism 91 irradiates the mask M. That is, the mask M is illuminated only in a region where the opening AP formed by the movable blades BL1 to BL4 and the opening of the fixed blind overlap each other.
- the image of the opening of the fixed blind BL0 is formed on the pattern surface of the mask M, but the periphery of the specific scanning exposure area on the mask M, that is, the area near the light-shielded portion is exposed.
- the four movable blades BL1 to BL4 prevent illumination light from entering the outside of the light-shielding portion. That is, during scanning of the mask stage, information on the relative position between the light beam emitted from the illumination optical system and the mask M is monitored.
- the edge positions of the movable blades BL 1 and BL 2 are determined. Move to control the width of the opening AP in the scanning exposure direction. This can prevent unnecessary patterns and the like from being transferred to the plate.
- the movable blind mechanism 91 is provided in the vicinity of the mask M.
- the movable blind mechanism may be provided in another position as long as the movable blind mechanism is conjugate to the mask M or in the vicinity thereof. .
- FIG. 18 is a configuration diagram of an exposure apparatus provided with antistatic means.
- the exposure apparatus has the same configuration as the exposure apparatus according to the first embodiment.
- a housing 92 for housing a light source and a housing 93 for housing an exposure apparatus body such as an illumination optical system and a projection optical system are separately provided.
- the body 93 is electrically connected and further grounded. That is, the housing 92 and the housing 93 are kept at the same potential.
- a power supply section 84 for supplying power to the light source and a power supply section 85 for supplying power to the exposure apparatus main body are separately provided, and each is grounded. Therefore, it is possible to prevent the light source of the exposure apparatus and the exposure apparatus main body from being charged with static electricity, and to prevent the solid-state light source from being damaged by the static electricity.
- variable pattern generation device that generates a pattern to be projected may be used instead of the mask in each of the above embodiments.
- Such a variable pattern generation device is roughly classified into a self-luminous image display device and a non-luminous image display device.
- Light-emitting image Image display elements include CRT (cathode ray tube), inorganic EL display, organic EL display (0LED: Organic Light Emitting diode), LED display, LD display, field emission display (FED) s plasma display ( PDP: Plasma Display Panel) is an example.
- a non-light-emitting image display element is also called a spatial light modulator (SLM), and is an element that spatially modulates the amplitude, phase, or polarization state of light.
- SLM spatial light modulator
- Type spatial light modulator and reflection type spatial light modulator examples include a transmissive liquid crystal display (LCD) and an electoric aperture chromic display (ECD).
- a DMD Deformable Micro Display
- -mirror Device, or Digital Micro-mirror Device N- reflective mirror array, reflective liquid crystal display, electrophoretic display (EPD), electronic paper (or electronic ink), light diffraction type light valve (Grating) Light Valve).
- FIG. 19 is a flowchart for explaining a method of manufacturing a semiconductor device as a micro device.
- a metal film is deposited on one lot of wafers.
- a photoresist is applied on the metal film on the wafer of the lot.
- an image of the pattern on the mask M is transferred onto the wafer of the lot in the projection optical system (projection optical unit). Exposure transfer is sequentially performed on each shot area. That is, the mask M is illuminated using the illuminating device, and the image of the pattern on the mask M is projected onto the substrate using the projection optical system and is exposed and transferred.
- step S46 the photoresist on the one lot of wafers is developed, and then in step S48, etching is performed on the one lot of wafers using the resist pattern as a mask.
- a circuit pattern corresponding to the pattern on the mask is formed in each shot area on each wafer.
- the circuit pattern of the upper layer is formed, etc.
- Devices are manufactured. According to the above-described semiconductor device manufacturing method, a semiconductor device having an extremely fine circuit pattern can be obtained with good throughput.
- a liquid crystal display element as a micro device can be obtained by forming a predetermined pattern (circuit pattern, electrode pattern, etc.) on a plate (glass substrate).
- FIG. 20 is a flowchart for explaining a method of manufacturing a liquid crystal display element as a micro device by forming a predetermined pattern on a blade using the exposure apparatus of the present embodiment. .
- a mask pattern is transferred and exposed to a photosensitive substrate (a glass substrate coated with a resist or the like) using the exposure apparatus of this embodiment. Is executed.
- a photosensitive substrate a glass substrate coated with a resist or the like
- 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 a next color filter forming process S52.
- a large number of sets of three dots corresponding to R (R ed), G (G reen), and B (B lue) are arranged in a matrix, or R, G , B, a color filter is formed by arranging a set of three striped filters in the horizontal scanning line direction.
- a cell assembling step S54 is performed.
- a liquid crystal panel liquid crystal cell
- liquid crystal is injected between the substrate having the predetermined pattern obtained in the pattern forming step S50 and the color filter obtained in the color filter forming step S52.
- Manufacture liquid crystal panels liquid crystal cells.
- components such as an electric circuit and a backlight for performing a display operation of the assembled liquid crystal panel (liquid crystal cell) are attached to complete a liquid crystal display element.
- the exposure apparatus of the present invention since the light source includes a solid-state light source unit in which a plurality of solid-state light sources are arranged in an array, the image plane illuminance can be set to a value required for a practical exposure apparatus. Throughput as a typical exposure apparatus can be secured.
- the exposure method of the present invention since exposure is performed using an exposure apparatus that secures a value of image plane illuminance required for practical exposure, it is possible to secure a throughput as a practical exposure method. Can be. Industrial applicability
- the exposure apparatus and the exposure method using the exposure apparatus of the present invention are suitable for use in the manufacture of semiconductor devices, liquid crystal display devices, imaging devices, thin-film magnetic heads, and other micro devices. .
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- 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
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AU2003284659A AU2003284659A1 (en) | 2002-11-25 | 2003-11-25 | Exposure apparatus and exposure method |
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JP2002341545 | 2002-11-25 | ||
JP2002-341545 | 2002-11-25 | ||
JP2003-65646 | 2003-03-11 | ||
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JP2003133190A JP2004335953A (ja) | 2002-11-25 | 2003-05-12 | 露光装置及び露光方法 |
JP2003-133190 | 2003-05-12 |
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JP (1) | JP2004335953A (ja) |
KR (1) | KR20050086755A (ja) |
AU (1) | AU2003284659A1 (ja) |
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Cited By (1)
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JP2009301066A (ja) * | 2004-03-31 | 2009-12-24 | Hitachi Via Mechanics Ltd | パターン露光方法およびパターン露光装置 |
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JP2006019412A (ja) * | 2004-06-30 | 2006-01-19 | Canon Inc | 露光装置及びデバイスの製造方法 |
JP4771753B2 (ja) * | 2005-06-08 | 2011-09-14 | 新光電気工業株式会社 | 面光源制御装置および面光源制御方法 |
JP2009302225A (ja) * | 2008-06-12 | 2009-12-24 | Nikon Corp | ライトガイド、照明装置、露光装置及びデバイス製造方法 |
JP5245775B2 (ja) * | 2008-12-04 | 2013-07-24 | 株式会社ニコン | 照明装置、露光装置、及びデバイス製造方法 |
KR101322737B1 (ko) | 2011-12-21 | 2013-10-29 | 마이다스시스템주식회사 | 자외선 엘이디 모듈 탑재 마스크 얼라이너 |
JP6866565B2 (ja) | 2016-01-20 | 2021-04-28 | ウシオ電機株式会社 | 光源装置 |
JP6746934B2 (ja) * | 2016-02-08 | 2020-08-26 | ウシオ電機株式会社 | 光源装置 |
KR102139719B1 (ko) * | 2019-09-09 | 2020-08-12 | 주식회사 투에이치앤엠 | 디스플레이 패널의 uv 노광에 대한 영향 평가장치 |
JP2024048111A (ja) | 2022-09-27 | 2024-04-08 | ウシオ電機株式会社 | 光源装置 |
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2003
- 2003-05-12 JP JP2003133190A patent/JP2004335953A/ja active Pending
- 2003-11-24 TW TW092132868A patent/TW200416824A/zh unknown
- 2003-11-25 AU AU2003284659A patent/AU2003284659A1/en not_active Abandoned
- 2003-11-25 WO PCT/JP2003/014973 patent/WO2004049410A1/ja active Application Filing
- 2003-11-25 KR KR1020057009320A patent/KR20050086755A/ko not_active Application Discontinuation
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JPH08334803A (ja) * | 1995-06-07 | 1996-12-17 | Nikon Corp | 紫外レーザー光源 |
JPH09179309A (ja) * | 1995-12-26 | 1997-07-11 | Sony Corp | 露光照明装置 |
JP2001166497A (ja) * | 1999-10-01 | 2001-06-22 | Nikon Corp | 露光方法及び露光装置 |
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JP2009301066A (ja) * | 2004-03-31 | 2009-12-24 | Hitachi Via Mechanics Ltd | パターン露光方法およびパターン露光装置 |
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TW200416824A (en) | 2004-09-01 |
KR20050086755A (ko) | 2005-08-30 |
AU2003284659A1 (en) | 2004-06-18 |
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