WO2005084873A1 - レーザ照射装置及びパターン描画方法 - Google Patents
レーザ照射装置及びパターン描画方法 Download PDFInfo
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- WO2005084873A1 WO2005084873A1 PCT/JP2004/002523 JP2004002523W WO2005084873A1 WO 2005084873 A1 WO2005084873 A1 WO 2005084873A1 JP 2004002523 W JP2004002523 W JP 2004002523W WO 2005084873 A1 WO2005084873 A1 WO 2005084873A1
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- laser beam
- laser
- irradiation
- pattern
- mask
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70058—Mask illumination systems
- G03F7/7015—Details of optical elements
- G03F7/70183—Zoom systems for adjusting beam diameter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/067—Dividing the beam into multiple beams, e.g. multifocusing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/067—Dividing the beam into multiple beams, e.g. multifocusing
- B23K26/0676—Dividing the beam into multiple beams, e.g. multifocusing into dependently operating sub-beams, e.g. an array of spots with fixed spatial relationship or for performing simultaneously identical operations
-
- 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
- G03F7/7015—Details of optical elements
- G03F7/70158—Diffractive optical elements
Definitions
- the present invention relates to a laser irradiation apparatus, and more particularly to a laser irradiation apparatus that irradiates an irradiation object with a plurality of laser beams to improve irradiation efficiency.
- a technique is known in which a laser beam is incident on a layer to be transferred that is in close contact with the surface of the base substrate, and the layer to be transferred at the position where the laser beam is incident is adhered (transferred) to the base substrate. After transferring a portion of the transferred layer, the transferred portion of the transferred layer that has not been transferred is peeled off to leave a convex portion made of the transferred layer on the base substrate.
- FIG. 10A shows an example of a convex pattern formed by transferring the transfer layer.
- a plurality of linear patterns 100Y parallel to the Y axis are arranged in the X axis direction at a pitch P X to form a striped pattern.
- the processing time can be shortened by splitting one laser beam into a plurality of laser beams and allowing the plurality of laser beams to enter the substrate surface simultaneously.
- Japanese Patent Publication No. 3371304 and Japanese Patent Application Laid-Open No. 2000-2755581 disclose a technique for branching one laser beam into a plurality of laser beams using a diffraction optical element (DOE). Yes.
- DOE diffraction optical element
- the laser beam can be simultaneously incident on a plurality of points on the substrate surface.
- a plurality of linear patterns 100Y shown in FIG. 10A can be drawn in one scan.
- An object of the present invention is to provide a laser irradiation apparatus capable of drawing a linear pattern having a desired pitch without exchanging the DOE.
- FIG. 10B shows another example of the convex pattern formed by transferring the transfer layer.
- Multiple linear patterns 1 0 0 Y parallel to the Y-axis are arranged in the X-axis direction at the pitch PX, and linear patterns 1 0 0 X parallel to the X-axis direction are arranged in the Y-axis direction at the pitch P y Yes.
- a lattice pattern 1 0 0 is composed of linear patterns 1 0 0 Y and 1 0 0 X that intersect each other.
- the pattern shown in FIG. 10B defines, for example, pixels of a flat image display device.
- Another object of the present invention is to provide a pattern drawing method capable of drawing a pattern including a linear portion and a branch portion branched therefrom and leaving a transfer pattern having a desired shape.
- Another object of the present invention is to provide a pattern drawing method capable of leaving a linear transfer pattern with good reproducibility using a pulsed laser beam.
- a laser light source (1) that emits a laser beam, and a diffractive optical element that is arranged at a position where the laser beam emitted from the laser light source is incident and branches the incident laser beam into a plurality of laser beams.
- a first zoom lens system (2 3) that is incident on the element (2 2) and a plurality of laser beams branched by the diffractive optical element and converges each of the incident laser beams on a first virtual plane
- a laser irradiation apparatus having the following is provided.
- the step of adjusting the optical axis so that the beam spots of the first laser beam and the second laser beam are arranged in contact with each other in the first direction on the surface of the workpiece The workpiece is moved so that the incident position of the first laser beam and the second laser beam moves from a start point to an end point in a second direction intersecting the first direction.
- the first laser beam is continuously incident from the start point to the end point, and the second laser beam is intermittently incident, thereby drawing a pattern in which branches protrude from the linear trajectory.
- a pattern drawing method is provided.
- the beam cross-section is shaped so that the beam cross-sectional shape of the pulse laser beam on the surface of the irradiation target is an irradiation pattern composed of a plurality of discretely distributed points. Irradiating the object to be irradiated with the pulse laser beam, and moving the incident position of the laser beam in the first direction from the position irradiated with one shot to the next shot. The moving distance to the target position is shorter than the dimension in the first direction of the irradiation pattern of the pulsed laser beam, and the deviation and misalignment points constituting the irradiation pattern irradiated with a certain shot are also included.
- FIG. 1 is a schematic view of a laser irradiation apparatus according to the first embodiment.
- FIG. 2 is a schematic view of a laser light source used in the laser irradiation apparatus according to the first embodiment.
- FIG. 3 is a plan view of a first-stage mask used in the laser irradiation apparatus according to the first embodiment.
- FIG. 4 is a plan view of a second stage mask used in the laser irradiation apparatus according to the first embodiment.
- FIG. 5 is a plan view of the first-stage mask used in the laser irradiation apparatus according to the modification of the first embodiment.
- FIG. 6 is a plan view of a second stage mask used in the laser irradiation apparatus according to the modification of the first embodiment.
- FIG. 7 is a plan view showing an irradiation pattern of a pulse laser beam for drawing a straight line used in the drawing method according to the second embodiment.
- FIG. 8 is a plan view showing an irradiation pattern of a pulse laser beam for drawing a branch portion used in the drawing method according to the second embodiment.
- FIG. 9 is a plan view showing a pattern actually irradiated with a pulsed laser beam in the drawing method according to the second embodiment.
- FIG. 1 OA and FIG. 1 OB are plan views showing an example of a pattern drawn with a laser beam.
- FIG. 11 is a schematic diagram of the DOE portion of the laser irradiation apparatus according to the third embodiment.
- FIGS. 12A to 12C are plan views showing examples of patterns drawn by the laser irradiation apparatus according to the third embodiment.
- FIG. 1 shows a schematic diagram of the laser irradiation apparatus according to the first embodiment.
- Laser light source 1 emits a laser beam.
- the laser beam emitted from the laser light source 1 is shaped into the beam cross section by the first stage mask 15 and enters the first stage zoom lens system 20.
- the first stage mask 15 has, for example, a structure in which a through-hole is formed in a plate-like member that blocks the laser beam, and shapes the beam cross section of the incident laser beam.
- the first stage zoom lens system 20 has a beam cross section shaped by the first stage mask 15 That is, the through hole of the first-stage mask 15 is imaged on the virtual plane 21.
- the imaging magnification is, for example, 1/20 to 1/4/3 times. Detailed configurations of the first-stage mask 15 and the laser light source 1 will be described later with reference to FIGS.
- the laser beam that has passed through the virtual plane 21 enters the diffractive optical element (D O E) 2 2.
- D O E 22 splits the incident laser beam into a plurality of laser beams, for example, 100 laser beams.
- the branched laser beam is incident on the second stage zoom lens system 23.
- the D O E 2 2 and the second-stage zoom lens system 23 3 form an aerial image formed on the virtual plane 21 on the virtual plane 24 for each laser beam branched by the D O E 2 2.
- the arrangement of the aerial image formed on the virtual plane 24 is determined by D O E 2 2.
- a plurality of (for example, 100 0) aerial images formed on the virtual plane 24 are arranged along one straight line.
- a second-stage mask 25 is held by a mask holding table 28 along the virtual plane 24.
- the second stage mask 25 can be replaced if necessary.
- the second-stage mask 25 has a structure in which a through-hole corresponding to the aerial image formed on the virtual surface 24 is formed in a plate-like member that shields the laser beam. The detailed configuration of the second-stage mask 25 will be described later with reference to FIG.
- a shirter mechanism 29 is disposed at or near the virtual surface 24.
- the shutter mechanism 29 shields a laser beam that passes through a position where some of the aerial images appear at the position of the virtual plane 24.
- a laser beam irradiation target 50 is held on the XY stage 27.
- the transfer optical system 26 forms an image of a point on the virtual surface 24 on the surface of the irradiation object 50 held on the XY table 27.
- the imaging magnification of the transfer optical system 26 is, for example, 1/5.
- a desired number of aerial images can be formed on the surface of the irradiation object 50 by shielding the laser beam at a position where a part of the aerial image appears with the shutter mechanism 29.
- the control device 30 controls the laser light source 1 and the XY table 27.
- FIG. 2 shows a schematic diagram of the laser light source 1.
- the first laser oscillator 2 and the second laser oscillator 7 each emit a laser beam.
- Semiconductor lasers fiber lasers, disk lasers, all solid-state lasers such as Nd: YAG, etc. can be used.
- harmonic generators may be combined.
- the laser beam emitted from the first laser oscillator 2 is expanded in beam diameter by a beam expander 3 to be a parallel beam bundle, and is incident on the shirter mechanism 4.
- the laser beam emitted from the second laser oscillator 7 is expanded in beam diameter by a beam expander 8 to be collimated, and enters the shutter mechanism 9.
- the shutter mechanisms 4 and 9 are controlled by the control device 30 to switch between a laser beam transmission state and a light shielding state.
- the Schotter mechanism 4 and 9 are, for example, a polarizing plate that makes a laser beam linearly polarized light, an electro-optic element (EOM) that exhibits a Pockels effect, and a polarizer that transmits the P component and reflects the S component of the incident laser beam. It is comprised including.
- the P component that has passed through the polarizer travels straight, and the reflected S component is absorbed by the beam damper.
- EOM electro-optic element
- a OM acousto-optic device
- a combining mirror (optical path combiner) 10 is arranged at this intersection.
- the composite mirror 10 is a mirror whose both surfaces are reflection surfaces. Most of the laser beam that has passed through the shatter mechanism 4 is incident on the reflecting surface on the front side of the composite mirror 10 at an incident angle of 45 ° and reflected. The remaining part goes straight to the side of the synthetic mirror 10 and is absorbed by the beam damper. The majority of the laser beam that has passed through the shatter mechanism 9 goes straight to the side of the synthesis mirror 10 and the remaining part is incident on the reflection surface on the back side of the synthesis mirror 10 at an incident angle of 45 ° and reflected. It is absorbed by the beam damper.
- Both the propagation direction of the laser beam that has passed through the shutter mechanism 4 and reflected by the combining mirror 10 and the propagation direction of the laser beam that has passed through the shutter mechanism 9 and travels straight to the side of the combining mirror 10 are both Z Parallel to the axis and the beam cross-sections of both are parallel to the X axis Line up and touch each other.
- the beam cross section of the laser beam transmitted through the shutter mechanism 9 out of the laser beam combined by the combining mirror 10 is larger than the beam cross section of the laser beam transmitted through the other shutter mechanism 4. Expanders 3 and 8 and a composite mirror 10 are arranged.
- the power is adjusted by an attenuator or the like so that the power densities of the two laser beams are almost equal.
- Two laser beams traveling parallel to the Z-axis are incident on the first-stage mask 15 shown in FIG.
- FIG. 3 shows a plan view of the first-stage mask 15.
- the plate-like member 15 A that does not transmit the laser beam is provided with a rectangular through hole 15 B.
- the laser beam emitted from the first laser oscillator 2 shown in FIG. 2 at the position where the first-stage mask 15 is disposed and the beam spot SP 1 of the laser beam emitted from the first laser oscillator 2 shown in FIG. Beam spot SP 2 is formed.
- the two beam spots S P 1 and S P 2 have a shape in which a part of a circle is cut out by a straight line, and are in contact with each other at this straight line and aligned in the X-axis direction.
- the through hole 15 B is included inside the beam spots S P 1 and S P 2.
- the first step mask 15 shapes the cross section of the laser beam into a rectangle. '
- FIG. 4 shows a plan view of the second stage mask 25.
- An elongated rectangular through hole 25 B extending in the X-axis direction is formed in the plate-like member 25 A that does not transmit the laser beam.
- the through hole 25 B is arranged at the position of the aerial image on the virtual plane 24 by the laser beam branched by the D O E 22 shown in FIG.
- An aerial image of the through hole 15 B of the first-stage mask 15 is formed side by side in the X-axis direction at the position where the second-stage mask 25 is disposed. Adjacent aerial images touch each other, and as a result, an elongated image (a collection of aerial images) extending in the X-axis direction is formed.
- the through hole 25 B is slightly smaller than the aggregate of the aerial images and is located inside the aerial image.
- the second-stage mask 25 5 shapes the beam cross section of the branched laser beam and fixes the position of the aerial image in the Y-axis direction when the virtual surface 24 is viewed from the transfer optical system 26 side. To do. Due to the design limitations of DOE 22, the position of the aerial image on the virtual plane 24 may deviate from the target position. Also in this case, the position of the aerial image in the Y-axis direction can be adjusted to the target position by the second-stage mask 25. Next, a method for drawing the pattern shown in FIGS. 10A and 10B using the laser irradiation apparatus shown in FIGS. 1 to 3 will be described.
- a laser beam is applied to an irradiation object in which the transfer layer is in close contact with the substrate, whereby the transfer layer in the portion irradiated with the laser beam is bonded to the substrate.
- a CW laser oscillator that emits a continuous wave is used.
- the shatter mechanism 9 is normally kept in a light-shielded state, and intermittently (periodically) in the transmissive state. When the shutter mechanism 9 is set to the transparent state, a branch portion branched from the straight portion 1 0 0 Y is drawn.
- a branch portion branched from a certain linear portion 1 0 0 Y reaches the adjacent linear portion 1 0 0 Y to form a linear portion 1 0 0 X parallel to the X axis. In this way, a grid pattern can be drawn by moving the irradiation object 50 in one direction.
- the pitch P X of the linear portion 100 0 Y can be changed.
- the thickness of the linear portion 10 O Y depends on the imaging magnification of the first-stage zoom lens system 20 and the imaging magnification of the second-stage zoom lens system 23.
- the imaging magnification of the first-stage zoom lens system 20 is reversed. Can be adjusted so that the line width of each of the linear portions 1 0 0 Y does not change.
- the shatter mechanism 29 may be arranged anywhere as long as the paths of the plurality of laser beams branched by D O E 22 are separated from each other.
- the CW laser oscillator is used as the first laser oscillator 2 and the second laser oscillator 7 shown in FIG. 2, but a pulsed laser oscillator may be used.
- FIGS. 5 and 6 are plan views of the first-stage mask 15 and the second-stage mask 25 used in the laser irradiation apparatus according to the modification of the first embodiment, respectively.
- one through hole 15 B was formed in the first-stage mask 15, but in the modified example, as shown in Fig. 5, square through holes 15 C and X
- a long rectangular through hole 15 D is formed in the axial direction. Both are disposed at a position separated by a gap G y in the Y-axis direction, and are disposed at positions in contact with each other in the X-axis direction. That is, when the through hole 15 C is moved in the Y-axis direction by a distance longer than the gap G y, the through hole 15 C contacts the through hole 15 D.
- the through-hole 15 C is arranged in the beam spot SP 1 of the laser beam emitted from the laser oscillator 2 shown in FIG. 2, and the through-hole 15 D is another ray oscillator 7 force shown in FIG. Are arranged in the beam spot SP 2 of the emitted laser beam.
- the two beam spots S P 1 and S P 2 may be in contact with each other as in the case of the first embodiment, or may be separated from each other.
- the DOE 2 2 shown in Fig. 1 is similar to the pattern consisting of the through holes 25 C and 25 D on the virtual plane 24 4 by branching the laser beam that has passed through the through holes 15 C and 15 D.
- a plurality of images are formed. Multiple images are arranged in a direction parallel to the X axis.
- the rectangular through hole 15 D space image and the square through hole 15 C formed next to it are in the X-axis direction. With respect to each other.
- through holes 25 C and 25 D are formed at positions corresponding to the images of the through holes 15 C and 15 D of the second stage mask 25, respectively.
- the second-stage mask 25 has a function of correcting deviations from the target position and the target shape of the positions and shapes of a plurality of images due to the D O E 22.
- the pattern shown in FIG. 10B is drawn by irradiating a laser beam in the same manner as in the first embodiment while moving the irradiation object 50 shown in FIG. 1 in the Y-axis direction. be able to.
- the incidence of the laser beam on the branch portion 100 0 X and the incidence of the laser beam on the branch portion of the branch portion 1 0 0 X of the linear portion 1 0 0 Y are: Deviation in time. However, this time shift is slight, and the distance that the XY stage moves is very short.
- the incident position of the laser beam incident on the branch portion 100 0 X and the incident position of the laser beam incident on the branch portion of the linear portion 1 0 0 Y are relatively displaced with respect to the X-axis direction. Is unlikely to occur.
- the branch portion 1 0 0 X is separated from the linear portion 1 0 0 Y, or the connection portion between the branch portion 1 0 0 X and the linear portion 1 0 0 Y is overlapped. Can be prevented.
- a bead for drawing a linear portion 100 Y by a laser beam that has passed through each of the through holes 25 B of the second-stage mask 25 5 shown in FIG. Spots are formed. That is, the edge of the beam spot corresponding to the edge on both sides of the linear portion 100 0 Y is not a transfer of the edge of the through hole 25 C.
- the linear portion 100 Y is drawn by the image of the through hole 25 C of the second-stage mask 25. That is, the edge of the beam spot corresponding to the edge on both sides of the linear portion 100 Y is a transfer of the edge of the through hole 25 C. For this reason, the edge of the linear portion 100 Y can be clearly drawn.
- a linear portion 100 0 Y is drawn using a pulse laser oscillator.
- the linear part 1 0 0 Y is It is formed.
- one shot of the beam spot and the next If the beam spot of the next shot overlaps, the already bonded part will be damaged by the next shot.
- the straight part 100Y will be cut off at the point away from the beam spot. In the method described below, such a problem is unlikely to occur.
- FIG. 7 shows an example of an irradiation pattern (beam cross section) on the irradiation object for drawing the linear portion 100Y.
- the beam cross section on the surface of the irradiation object consists of a plurality of discrete points. If we define a square grid with 4 rows and 4 columns and express the grid point in the nth row and mth column as (n, m), among the 16 grid points, (1, 1), (1, 4), Beam spots are formed at the positions of the eight lattice points (2, 2), (2, 3), (3, 2), (3, 3), (4, 1), and (4, 4). The laser beam is not incident on the positions of the other eight lattice points.
- FIG. 8 shows an example of an irradiation pattern for drawing the branch part 100X.
- a beam spot is formed at the position of all 32 lattice points in a 4 ⁇ 8 square IJ square lattice.
- the lattice spacing of the square lattice that is the reference of the irradiation pattern shown in FIG. 8 is equal to the lattice spacing of the square lattice that is the reference of the irradiation pattern shown in FIG.
- the pulse laser beam for drawing the linear portion 100 Y is emitted from the laser oscillator 2 in FIG. 2, and the pulse laser beam for drawing the branch portion 100X is sent from another laser oscillator 7 in FIG. Emitted.
- the beam cross section of the laser beam is shaped so as to have the irradiation pattern shown in FIGS. Specifically, in the region where the beam spot SP 1 shown in FIG. 3 is formed, a through hole is arranged so as to have the irradiation pattern of FIG. 7, and at the position where the beam spot SP 2 is formed, as shown in FIG.
- the beam cross-section is shaped by arranging the through holes so as to form an irradiation pattern.
- Figure 9 shows the pattern that is actually drawn.
- the circle indicates the position irradiated by the laser beam, and the number n in the circle means that the position is irradiated at the nth shot.
- P g be the lattice spacing of the square lattice that is the reference for the irradiation pattern, and let the extending direction of the linear part 100Y to be drawn be the Y-axis direction.
- a pulse laser beam for drawing the branch portion 100 X is irradiated.
- any point that constitutes the irradiation pattern irradiated with a certain shot is the point of the irradiation pattern irradiated with the previous shot and the irradiation pattern irradiated with the subsequent shots. Does not overlap with the point.
- a linear portion 10 0 O Y defined by a square lattice of N rows and 4 columns is drawn.
- N is an arbitrary natural number, and depends on the length of the linear portion 100 0 Y.
- the lattice points of this N-by-4 square lattice are irradiated with a pulse laser beam.
- a plurality of branch portions 100 X arranged at equal intervals in the Y-axis direction can be formed by making a pulse laser beam for drawing the branch portions 100 X enter each predetermined number of shots. it can.
- the irradiation pattern for drawing the straight portion 1 0 0 Y is composed of a plurality of points that are discretely distributed, and irradiation areas of different shots overlap each other. Can be prevented. Even if the irradiation pattern is composed of a plurality of discretely distributed points, the region where the transferred layer is actually attached becomes one continuous region due to the propagation of heat. The amount of heat input to the area bonded by heat propagation is less than the amount of heat input to the area bonded by direct laser beam irradiation.
- the laser beam is not directly irradiated to the bonded area by the heat propagation, and only the heat propagation occurs in the next shot. For this reason, it is considered that no damage is caused by the subsequent laser beam irradiation.
- Each point constituting the irradiation pattern is ny in the Y-axis direction. (Ny is not a prime number. Number), nx in the X-axis direction (nx is a natural number), placed at any of the lattice points arranged in a matrix. Focusing on one row of grid points arranged in the Y-axis direction, the irradiation pattern is placed at the positions of my grid points out of ny grid points (my is a number other than 1 and ny out of ny divisors). The constituent points are arranged. The distance that the incident position of the pulse laser beam moves from one shot to the next is set to a length of my times the lattice spacing in the Y-axis direction.
- the moving distance from the position irradiated with one shot to the position irradiated with the next shot is shorter than the dimension in the Y-axis direction of the irradiation pattern of the pulse laser beam.
- Each point composing the irradiation pattern is irradiated by the point of the irradiation pattern irradiated by the previous shot and the subsequent shots. It is necessary to arrange so that it does not overlap the points of the irradiation pattern.
- a third embodiment will be described with reference to FIGS. 11 to 12C.
- a linear pattern having branches is drawn.
- a simple straight line pattern without branches is drawn.
- Figure 11 shows a schematic diagram of the DOE holding part of the laser irradiation apparatus according to the third embodiment.
- the laser beam is branched by DOE 22.
- two DOEs 22a and 22b are arranged.
- the DOE 22 a and 22 b are held on the D O E holding base 40.
- the DOE holder 40 is held by a slide mechanism 41 so as to be movable in the X-axis direction.
- the laser light source 1 one laser oscillator is used, and as the first stage mask 15, for example, one having a square through hole is used.
- Other configurations are the same as those of the laser irradiation apparatus according to the first embodiment shown in FIG.
- DOE 22a and 22b By moving the DOE holding base 40 by the slide mechanism 41, one of the DOEs 22a and 22b is selectively placed in the laser beam path.
- DOE 2 2 a When DOE 2 a is arranged in the path, a plurality of aerial images arranged in the X-axis direction are formed on the virtual plane 24.
- the other DOE 22 b When the other DOE 22 b is arranged in the laser beam path, an aerial image arranged in the Y-axis direction is formed on the virtual plane 24.
- DOE 22 The direction in which the aerial image formed by a and the direction in which the aerial image formed by the other DOE 2 2 b are arranged do not necessarily have to be orthogonal to each other, and may be directions intersecting each other.
- DOE 2 2 a When DOE 2 2 a is placed in the laser beam path and the irradiation object 50 is moved in the Y-axis direction, as shown in Fig. 1 2 A, the effective area of irradiation object 5 0 5 1 A plurality of linear patterns extending in the Y-axis direction are drawn inside. As shown in FIG. 12B, when four effective areas 51A to 51D are defined on the irradiation object 50, each of the effective areas 51A to 51D has a Y axis A linear pattern extending in the direction can be drawn.
- the X-axis is moved to the effective areas 5 1 A and 5 1 B of the irradiation object 50.
- a plurality of straight line patterns extending in the direction can be drawn.
- the same pattern can be drawn by rotating the irradiation object 90 °, the following disadvantages arise.
- the larger the screen of a thin display the larger the substrate.
- the stage mechanism for rotating the substrate is likely to be loose, and the position accuracy of the pattern is lowered.
- the stage mechanism is not required to rotate.
- a similar pattern can be drawn by rotating DOE 2 2 shown in FIG. 1 by 90 °.
- DOE since DOE is not rotated, misalignment hardly occurs.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2006510558A JP4497382B2 (ja) | 2004-03-02 | 2004-03-02 | レーザ照射装置 |
PCT/JP2004/002523 WO2005084873A1 (ja) | 2004-03-02 | 2004-03-02 | レーザ照射装置及びパターン描画方法 |
TW093108561A TWI254804B (en) | 2004-03-02 | 2004-03-29 | Laser beam application device and pattern drawing method |
US11/514,165 US20060289412A1 (en) | 2004-03-02 | 2006-09-01 | Laser beam irradiation apparatus and pattern drawing method |
Applications Claiming Priority (1)
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PCT/JP2004/002523 WO2005084873A1 (ja) | 2004-03-02 | 2004-03-02 | レーザ照射装置及びパターン描画方法 |
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US11/514,165 Continuation US20060289412A1 (en) | 2004-03-02 | 2006-09-01 | Laser beam irradiation apparatus and pattern drawing method |
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WO2005084873A1 true WO2005084873A1 (ja) | 2005-09-15 |
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US (1) | US20060289412A1 (ja) |
JP (1) | JP4497382B2 (ja) |
TW (1) | TWI254804B (ja) |
WO (1) | WO2005084873A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007258691A (ja) * | 2006-02-21 | 2007-10-04 | Semiconductor Energy Lab Co Ltd | レーザ照射装置、レーザ照射方法、及び半導体装置の作製方法 |
JP2008000774A (ja) * | 2006-06-21 | 2008-01-10 | Sumitomo Heavy Ind Ltd | レーザ照射装置、レーザ照射方法、及びパタン描画方法 |
JP2008279503A (ja) * | 2007-05-09 | 2008-11-20 | Eo Technics Co Ltd | マルチレーザシステム |
JP2009302532A (ja) * | 2008-06-02 | 2009-12-24 | Asml Netherlands Bv | リソグラフィ装置及びデバイス製造方法 |
JP2012115897A (ja) * | 2010-12-03 | 2012-06-21 | Sumitomo Heavy Ind Ltd | レーザ加工装置及び光軸調整方法 |
WO2013179977A1 (ja) * | 2012-05-29 | 2013-12-05 | 株式会社ニコン | 照明装置、処理装置、及びデバイス製造方法 |
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US20140312015A1 (en) * | 2011-11-14 | 2014-10-23 | Canon Kabushiki Kaisha | Laser processing apparatus, method of laser processing, method of fabricating substrate, and method of fabricating inkjet head |
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JP2002113711A (ja) * | 2000-10-11 | 2002-04-16 | Murata Mfg Co Ltd | セラミックグリーンシートの加工方法及びそれに用いるレーザ加工装置 |
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DE10144243A1 (de) * | 2001-09-05 | 2003-03-20 | Zeiss Carl | Zoom-System für eine Beleuchtungseinrichtung |
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- 2004-03-02 JP JP2006510558A patent/JP4497382B2/ja not_active Expired - Fee Related
- 2004-03-02 WO PCT/JP2004/002523 patent/WO2005084873A1/ja active Application Filing
- 2004-03-29 TW TW093108561A patent/TWI254804B/zh not_active IP Right Cessation
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2006
- 2006-09-01 US US11/514,165 patent/US20060289412A1/en not_active Abandoned
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JPH1058175A (ja) * | 1996-08-27 | 1998-03-03 | Nikon Corp | レーザ加工装置の光軸の較正方法 |
JP2002113711A (ja) * | 2000-10-11 | 2002-04-16 | Murata Mfg Co Ltd | セラミックグリーンシートの加工方法及びそれに用いるレーザ加工装置 |
JP2003334683A (ja) * | 2002-05-17 | 2003-11-25 | Sangaku Renkei Kiko Kyushu:Kk | レーザ加工装置とレーザ加工方法 |
Cited By (11)
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JP2007258691A (ja) * | 2006-02-21 | 2007-10-04 | Semiconductor Energy Lab Co Ltd | レーザ照射装置、レーザ照射方法、及び半導体装置の作製方法 |
JP2008000774A (ja) * | 2006-06-21 | 2008-01-10 | Sumitomo Heavy Ind Ltd | レーザ照射装置、レーザ照射方法、及びパタン描画方法 |
JP2008279503A (ja) * | 2007-05-09 | 2008-11-20 | Eo Technics Co Ltd | マルチレーザシステム |
JP2009302532A (ja) * | 2008-06-02 | 2009-12-24 | Asml Netherlands Bv | リソグラフィ装置及びデバイス製造方法 |
JP2009302531A (ja) * | 2008-06-02 | 2009-12-24 | Asml Netherlands Bv | リソグラフィ装置及びデバイス製造方法 |
JP2010034516A (ja) * | 2008-06-02 | 2010-02-12 | Asml Netherlands Bv | リソグラフィ装置及びデバイス製造方法 |
US8264671B2 (en) | 2008-06-02 | 2012-09-11 | Asml Netherlands B.V. | Lithographic apparatus and device manufacturing method |
US8446564B2 (en) | 2008-06-02 | 2013-05-21 | Asml Netherlands B.V. | Lithographic apparatus and device manufacturing method |
US8477289B2 (en) | 2008-06-02 | 2013-07-02 | Asml Netherlands B.V. | Position measurement using natural frequency vibration of a pattern |
JP2012115897A (ja) * | 2010-12-03 | 2012-06-21 | Sumitomo Heavy Ind Ltd | レーザ加工装置及び光軸調整方法 |
WO2013179977A1 (ja) * | 2012-05-29 | 2013-12-05 | 株式会社ニコン | 照明装置、処理装置、及びデバイス製造方法 |
Also Published As
Publication number | Publication date |
---|---|
JP4497382B2 (ja) | 2010-07-07 |
US20060289412A1 (en) | 2006-12-28 |
TWI254804B (en) | 2006-05-11 |
TW200530627A (en) | 2005-09-16 |
JPWO2005084873A1 (ja) | 2008-01-17 |
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