WO2022163255A1 - 転写装置および転写基板 - Google Patents
転写装置および転写基板 Download PDFInfo
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- WO2022163255A1 WO2022163255A1 PCT/JP2021/048087 JP2021048087W WO2022163255A1 WO 2022163255 A1 WO2022163255 A1 WO 2022163255A1 JP 2021048087 W JP2021048087 W JP 2021048087W WO 2022163255 A1 WO2022163255 A1 WO 2022163255A1
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- transfer
- holding
- active energy
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- substrate
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- 239000000758 substrate Substances 0.000 title claims abstract description 223
- 238000002679 ablation Methods 0.000 claims abstract description 77
- 230000001678 irradiating effect Effects 0.000 claims abstract description 20
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- 238000000608 laser ablation Methods 0.000 description 5
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67144—Apparatus for mounting on conductive members, e.g. leadframes or conductors on insulating substrates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/6835—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
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- 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
- B23K26/50—Working by transmitting the laser beam through or within the workpiece
- B23K26/57—Working by transmitting the laser beam through or within the workpiece the laser beam entering a face of the workpiece from which it is transmitted through the workpiece material to work on a different workpiece face, e.g. for effecting removal, fusion splicing, modifying or reforming
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- 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
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- 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
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/082—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
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- 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
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
- B23K26/354—Working by laser beam, e.g. welding, cutting or boring for surface treatment by melting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B43/00—Operations specially adapted for layered products and not otherwise provided for, e.g. repairing; Apparatus therefor
- B32B43/006—Delaminating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/93—Batch processes
- H01L24/95—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips
- H01L24/97—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips the devices being connected to a common substrate, e.g. interposer, said common substrate being separable into individual assemblies after connecting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2310/00—Treatment by energy or chemical effects
- B32B2310/08—Treatment by energy or chemical effects by wave energy or particle radiation
- B32B2310/0806—Treatment by energy or chemical effects by wave energy or particle radiation using electromagnetic radiation
- B32B2310/0843—Treatment by energy or chemical effects by wave energy or particle radiation using electromagnetic radiation using laser
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
- H01L2221/67—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere
- H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L2221/68304—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
- H01L2221/68318—Auxiliary support including means facilitating the separation of a device or wafer from the auxiliary support
- H01L2221/68322—Auxiliary support including means facilitating the selective separation of some of a plurality of devices from the auxiliary support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
- H01L2221/67—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere
- H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L2221/68304—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
- H01L2221/68354—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support used to support diced chips prior to mounting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
- H01L2221/67—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere
- H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L2221/68304—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
- H01L2221/68381—Details of chemical or physical process used for separating the auxiliary support from a device or wafer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/93—Batch processes
- H01L2224/95—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips
- H01L2224/95001—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips involving a temporary auxiliary member not forming part of the bonding apparatus, e.g. removable or sacrificial coating, film or substrate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/005—Processes
- H01L33/0095—Post-treatment of devices, e.g. annealing, recrystallisation or short-circuit elimination
Definitions
- the present invention relates to a transfer device that irradiates a transfer substrate with light energy and transfers an element to a transferred substrate by laser lift-off.
- Patent Document 1 discloses an element transfer device that transfers an element using an ablation technique.
- this device transfer device there are provided a laser irradiation section for generating a laser beam, a reflecting means for reflecting the laser beam from the laser irradiation section in a desired direction, and irradiation and non-irradiation of the laser beam in conjunction with the reflecting means.
- a laser beam is selectively irradiated to some of the elements arranged on the original substrate to cause ablation.
- a portion of the device is transferred onto the destination substrate by this selective ablation. That is, the elements are transferred from the source substrate to the destination substrate by laser lift-off.
- a blister ring layer provided on a transfer substrate and having an adhesive layer on the surface side is irradiated with a laser beam to cause blistering (swelling) in the blister ring layer, and the generation of the blister causes
- a technique is disclosed in which an article (element) adhered to an adhesive layer is extruded to separate the article from the transfer substrate.
- the contact area between the blister 93 and the element 91 remains large, and the force (e.g., adhesive force) holding the element 91 at this contact surface is greater than the force (e.g., blister).
- the force e.g., adhesive force
- the element 91 does not peel off from the transfer substrate 92 as a result of overcoming the kinetic energy and gravitational force accompanying the generation.
- the object of the present invention is to provide a transfer device and a transfer substrate that can reliably separate an element from a transfer substrate and transfer the element to a substrate to be transferred.
- the transfer apparatus of the present invention irradiates an ablation layer of a transfer substrate with an active energy ray to cause ablation, thereby transferring elements held by the ablation layer from the transfer substrate to the transfer substrate.
- a transfer substrate gripping unit that grips the transfer substrate; and a transfer substrate gripping unit that grips the transfer substrate such that the ablation layer of the transfer substrate faces the transfer substrate.
- an active energy ray irradiating section for irradiating the ablation layer of the transfer substrate held by the transfer substrate holding section with an active energy ray, wherein the active energy ray irradiating section irradiates one element in the ablation layer. It is characterized by irradiating the active energy ray to a plurality of locations of the holding area to be held.
- the contact area between the ablation layer and the device after irradiation with active energy rays can be reliably reduced, and the device can be reliably separated from the transfer substrate.
- the irradiation range of the active energy ray is smaller than the holding area.
- the ablation layer may disappear by ablation.
- the ablation layer may cause blisters due to ablation.
- the active energy ray irradiating part controls the location where the active energy ray is irradiated so that the blister is formed for each irradiation of the active energy ray.
- the ablation layer is preferably composed of a plurality of independent holding portions, and the active energy ray is preferably applied to the plurality of holding portions holding one element individually.
- the contact area between the element and the transfer substrate via the holding portion can be reduced, so the output of the active energy ray for transferring one element can be suppressed, and the running cost can be suppressed.
- a non-holding site may be mixed.
- the active energy ray irradiation unit preferably irradiates the plurality of holding portions holding one element with the active energy ray in a predetermined order.
- the active energy ray irradiator preferably irradiates the active energy ray sequentially from the outer holding portion to the inner holding portion with respect to the plurality of holding portions holding one element.
- the active energy ray irradiating unit preferably irradiates the active energy ray so that the trajectory of the irradiation of the active energy ray becomes spiral with respect to the plurality of holding portions that hold one element.
- the active energy ray emitted from the active energy ray irradiation unit is converted into an energy ray flux composed of a plurality of active energy ray, and the energy ray flux simultaneously irradiates all the holding portions holding one element. It is preferable to irradiate the active energy ray.
- the active energy ray irradiator preferably irradiates active energy rays of uniform power to all the holding portions that hold one element.
- control is easy and the element can be stably flown in a predetermined direction.
- a transfer apparatus of the present invention is a transfer apparatus that irradiates a transfer substrate with light energy to transfer a transfer target held by the transfer substrate to a transfer substrate using laser lift-off. and a laser light source that emits laser light forming the light energy, and a light energy shift means that adjusts the irradiation position of the light energy on the transfer substrate, wherein the transfer target is the transfer substrate. It is held on the transfer substrate via a plurality of adhesive points provided on the surface facing the transfer target, and the laser light source individually applies the optical energy to the plurality of adhesive points holding one transfer target. By irradiating the transfer target, the transfer target is transferred to the transfer target substrate arranged to face the transfer substrate with the transfer target interposed therebetween.
- this transfer device can reduce the contact area between the transfer target and the transfer substrate via the adhesive point, it is possible to suppress the output of the laser beam for transferring one transfer target and reduce the running cost. can.
- the transfer substrate of the present invention is a transfer substrate that holds an element in an ablation layer in which ablation occurs when irradiated with an active energy ray, and a holding region that holds one element in the ablation layer.
- a holding portion that has a holding force for the element and causes blistering due to irradiation of the active energy ray and a non-holding portion that does not have the holding force for the element and does not cause blistering due to the active energy ray.
- the element can be reliably separated from the transfer substrate and transferred to the transferred substrate.
- FIG. 4A and 4B are diagrams for explaining the form of light rays on a real image plane of laser light in the transfer device of the first embodiment;
- FIG. It is a figure explaining the holding
- FIG. 2nd Embodiment of this invention It is a figure explaining the transcription
- FIG. 5 is a diagram illustrating a transfer form of a chip according to another embodiment of the present invention
- FIG. 5 is a diagram illustrating a transfer form of a chip according to another embodiment of the present invention
- FIG. 5 is a diagram illustrating a transfer form of a chip according to another embodiment of the present invention
- FIG. 5 is a diagram illustrating a transfer form of a chip according to another embodiment of the present invention
- FIG. 1A is a side view of the transfer device 1
- FIG. 1B is a top view of the transfer device 1.
- the transfer apparatus 1 of the present embodiment irradiates light energy formed by a light spot onto an arbitrary position in the in-plane direction of the surface to be irradiated of the surface of the transfer substrate, so that the chip 21 held by the transfer substrate utilizes laser lift-off. (elements) are transferred to a substrate to be transferred.
- Light energy is a type of activation energy in this description.
- the transfer device 1 has a laser irradiation section 11, a beam expander 12, a phase diffraction element 13, a zoom lens 14, a collimating lens 15, a galvanomirror 16, and an F ⁇ lens 17.
- the light B passes through the beam expander 12, the phase diffraction element 13, the zoom lens 14, the collimating lens 15, the galvanomirror 16, and the F.theta.
- the phase diffraction element 13 splits the single laser beam B into a plurality of beams B1 (energy beams).
- beams B1 energy beams
- the surface to be irradiated S is the surface (lower surface) of the transfer substrate 22 on which the chip 21 is held. reach.
- a set of portions irradiated with light rays on the irradiated surface S is referred to as a light image 2 as shown in FIG. 1(b).
- the irradiated surface is irradiated with light energy according to the irradiation area of each light beam forming the light beam image 2 .
- the vertical direction is called the Z-axis direction
- the horizontal direction in which the laser beam B is emitted from the laser irradiation unit 11 is called the X-axis direction
- the horizontal direction perpendicular to the X-axis direction is called the Y-axis direction.
- the laser irradiation unit 11 is an active energy irradiation unit referred to in this description, and is a device that emits a single laser beam B, which is an active energy ray. is emitted in pulses.
- the active energy ray is not limited to visible light as in the present embodiment, and ultraviolet rays, electron beams, and the like can also be applied.
- the beam expander 12 is a combination of lenses for expanding the diameter of the laser beam B emitted from the laser irradiation unit 11.
- the laser beam B having a diameter suitable for branching by the phase diffraction element 13 enters the phase diffraction element 13.
- the beam expander 12 adjusts the diameter of the laser beam B in order to make it possible.
- a phase diffraction element (Diffractive Optical Element: DOE) 13 is configured by combining a plurality of diffraction gratings with different grating periods, and converts the shape of the laser beam B into an arbitrary shape using the diffraction phenomenon of light. It is.
- the phase diffraction elements 13 used in the present embodiment are a plurality of phase diffraction elements arranged in a matrix with an equal pitch on a predetermined plane (on the YZ plane when the laser light B is incident from the X-axis direction). It is converted into a ray bundle B1 consisting of a single ray.
- the phase diffraction element 13 is designed.
- a DOE divides a laser beam into a plurality of beams obtained as diffraction patterns by a diffraction grating, and obtains a light intensity distribution consisting of a desired diffraction pattern on a virtual plane at a predetermined distance from the DOE. It is. Therefore, in many cases, the desired light intensity distribution cannot be obtained on surfaces other than the predetermined distance. Therefore, although the expression "dividing a laser beam into a plurality of beams" as used in this specification is not strictly correct, for the sake of convenience, obtaining a light intensity distribution consisting of a plurality of diffraction patterns by means of the above-mentioned DOE is simply referred to as a plurality of beams. It is expressed as dividing into .
- FIG. 2 is a cross-sectional view along line aa in FIG. 1(a), which is the real image plane of the ray bundle B1. 2 ( As indicated by the pitch P1 in a), the light spots corresponding to the number of light rays forming the light beam B1 are arranged at equal pitches on the YZ plane. Although FIG. 2 shows that the light beams forming the light beam B1 are arranged in a 3 ⁇ 3 matrix, the number of light beams may be larger than this.
- the zoom lens 14 which is a variable focus optical system, is provided immediately downstream of the phase diffraction element 13 as described above.
- the focal length (magnification of the zoom lens 14) of this varifocal optical system it is possible to expand or reduce the pitch of the light spots.
- the bundle B1' it is possible to arbitrarily change and adjust the pitch of each ray of the ray bundle forming the ray image 2 compared with the pitch P1 in FIG. 2(a).
- each light ray is arranged on the real image plane so that each light ray of the light bundle B1 forming the light ray image 2 with which the irradiated surface S is irradiated has a predetermined size and shape.
- An aperture member 18 with an opening (aperture 19) is provided. Specifically, as shown in FIG.
- an aperture member 18 in which apertures 19 are arranged at pitch P1 is used for a bundle of rays B1 having a pitch P1.
- an aperture member 18' having apertures 19' arranged at a pitch P1' is used for a bundle of rays B1' having a pitch P1'.
- the aperture member is replaceable or deformable so that it can be replaced. By doing so, it is possible to irradiate the surface S to be irradiated with the light energy of the irradiation range (size and shape) suitable for the application in addition to the pitch suitable for the application.
- the light is condensed and imaged again on the surface S to be illuminated.
- an optical system for forming an image of light again is referred to as an imaging optical system, and in this embodiment, the combination of the collimating lens 15 and the F ⁇ lens 17 corresponds to this imaging optical system.
- a galvanomirror 16 is provided between the collimator lens 15 and the F ⁇ lens 17 .
- the galvanomirror 16 has two mirrors, and by controlling the positions and angles of these mirrors, incident light rays can be emitted in any direction.
- the galvanomirror 16 functions as light energy shift means for changing the position on the surface S to be irradiated with the light energy. By having such a light energy shift means, the irradiation position of the light energy with respect to the transfer substrate 22 having the surface S to be irradiated can be adjusted.
- a transfer substrate 22 is disposed on the downstream side of the F ⁇ lens 17 in the optical path of the laser beam B emitted from the laser irradiation unit 11 .
- a substrate 23 is arranged. The transfer substrate 22 and the transfer substrate 23 are held by gripping means (transfer substrate gripping portion and transfer substrate gripping portion) (not shown).
- the transfer substrate 22 is a substrate made of glass or the like and capable of transmitting the light beam B1, and holds the chip 21 on the lower surface side.
- the chip 21 is, for example, a semiconductor chip, and more specifically, an LED chip or the like that constitutes each pixel of RGB in a display panel.
- FIG. 3A and 3B are diagrams for explaining the holding form of the chip 21 by the transfer substrate 22, where FIG. 3(a) is a front view and FIG. 3(b) is a top view.
- An adhesive point 24a (also referred to as a holding portion in this description) is provided on the lower surface side of the transfer substrate 22, and the surface of the adhesive point 24a adhesively holds the chip 21 so that the transfer substrate 22 is attached to the adhesive point 24a.
- a form for holding the chip 21 is configured through the .
- one transfer substrate 22 holds a plurality of chips 21 .
- the surface area of the adhesive point 24a is the chip's surface area.
- One chip 21 is adhesively held by a plurality of adhesive points 24a which are sufficiently smaller than the area of the surface of 21 facing the transfer substrate 22 and which are each independent. That is, a holding area for holding one chip 21 is configured by a plurality of adhesive points 24a (holding portions).
- 3 ⁇ 3 adhesive points 24a adhere and hold one chip 21.
- the shape of the surface of each adhesive point 24a may be circular as shown in FIG. 3(b), or other shapes.
- the transferred substrate 23 may be a circuit substrate on which the chip 21 is finally mounted, or an intermediate substrate on which the chip 21 is intermediately held when the transfer is repeated a plurality of times before being mounted on the circuit substrate.
- the transfer substrate 23 is arranged to face the transfer substrate 22 with the chip 21 interposed therebetween, and the chip 21 separated from the transfer substrate 22 lands on the surface of the transfer substrate 23 facing the transfer substrate 22.
- a bonding material such as an anisotropic conductive film (ACF) or an adhesive material is provided on the landing surface so that the chip 21 can be held.
- a laser beam B is emitted from the laser irradiation unit 11, and a light beam image 2 is formed (i.e., light energy is irradiated) on the irradiated surface S, which is the boundary between the transfer substrate 22 and the adhesive point 24a.
- 24a is decomposed and gas is generated. That is, laser ablation occurs.
- This generation of gas energizes the tip 21 when the tip 21 is separated from the transfer substrate 22 .
- a layer such as the adhesive point 24a that is ablated by irradiation with an active energy ray is also called an ablation layer in this description.
- the number of light rays forming the light image 2 is the same as the number of adhesive points 24a, and the pitch of each light ray (the dimension P in FIG. 4(a) ), the ray bundle B1 is adjusted by the phase diffraction element 13 and the zoom lens 14 so as to have the same pitch as the arrangement of the adhesive points 24a.
- all the adhesive points 24a that adhesively hold one chip 21 are individually and simultaneously irradiated with light energy.
- the chip 21 is laser lifted off by one emission of the laser beam B, flies in a predetermined direction (downward direction), and lands on the transferred substrate 23 .
- the chip 21 is transferred from the transfer substrate 22 to the transferred substrate 23 .
- the irradiation position of the light energy is shifted by the size of the chip 21 by the light energy shift means (the galvanomirror 16 in this embodiment), and then the laser irradiation section 11 emits the laser light B according to the cycle of the emitted pulse.
- the adjacent chip 21 is irradiated with the light beam image 2 as shown in FIG.
- the chips 21 are continuously transferred to the transferred substrate 23 .
- the irradiation area of each light beam forming the light beam image 2 and the surface area of the adhesive point 24a are almost the same, or the irradiation area of the light beam is slightly larger (about 2 to 10 ⁇ m protruding from the adhesive point). preferable.
- the shape of the adhesive point 24a is set according to the irradiation area of the light beam, or the irradiation area of the light beam is set by the aperture member 18 according to the shape of the adhesive point 24a so as to have such an area relationship. be.
- the adhesive point 24a can be completely separated from the chip 21 by irradiation of light energy.
- the chip 21 will remain held on the transfer substrate 22 through the gap and will not be lifted off by laser, or even if lifted off by laser, the chip 21 will fly in a direction tilted from the predetermined direction.
- the light beam B1 is configured so that the power of each laser beam is uniform. By doing so, the timing at which the chip 21 separates from each adhesive point 24a and the thrust force generated during laser ablation can be made uniform. can.
- FIG. 5A is a side view of the transfer device 10
- FIG. 5B is a top view of the transfer device 10.
- FIG. 5A is a side view of the transfer device 10
- FIG. 5B is a top view of the transfer device 10.
- the transfer device 10 has a laser irradiation section 11, a beam expander 12, a zoom lens 14, a collimating lens 15, a galvanomirror 16, and an F ⁇ lens 17, and the laser beam B emitted from the laser irradiation section 11 passes through the beam expander. 12, the zoom lens 14, the collimating lens 15, the galvanomirror 16, and the F.theta. That is, unlike the transfer device 1 of the first embodiment, the phase diffraction element 13 is not provided. Therefore, the laser beam B emitted from the laser irradiation unit 11 is not split into the light beam B1, and the light beam forming the light beam image 2 on the irradiated surface S is only one. The irradiation position of the light beam image 2 on the surface S to be irradiated is controlled by a galvanomirror 16, which is light energy shifting means.
- a plurality of adhesive points 24a holding one chip 21 are individually irradiated one by one with the light beam image 2 (i.e., irradiated with light energy) to cause laser ablation. Then, when the light beam image 2 is irradiated onto the last remaining adhesive point 21, the chip 21 is completely separated from the transfer substrate 22, and flies to the transfer substrate 23 by laser lift-off. be transcribed.
- 6(a) to 6(c) illustrate the form of transfer of the chip 21 when the chip 21, the transfer substrate 22, and the adhesive points 24a are viewed from the side. As shown in FIG. 6(c), three adhesive points 24a are shown to hold one chip 21. First, as shown in FIG. Ablation occurs.
- the right end adhesive point 24a is irradiated with the light beam image 2, thereby leaving the center adhesive point 24a to hold the chip 21. Then, as shown in FIG. 6(b), the right end adhesive point 24a is irradiated with the light beam image 2, thereby leaving the center adhesive point 24a to hold the chip 21. Then, as shown in FIG. 6(b), the right end adhesive point 24a is irradiated with the light beam image 2, thereby leaving the center adhesive point 24a to hold the chip 21. Then, as shown in FIG.
- the center adhesive point 24a is irradiated with the light beam image 2, and the chip 21 is separated from the transfer substrate 22 and transferred to the transferred substrate 23.
- the thrust applied to the chip 21 during laser lift-off is Since the thrust is generated when laser ablation is performed, the chip 21 flies to the transferred substrate 23 with a relatively small thrust. As a result, it is possible to prevent the chip 21 from cracking due to the impact when it lands on the transferred substrate 23 .
- the chip 21 is held by controlling the irradiation of the light energy so that the adhesive point 24a that holds the central portion of the chip 21 remains until the end. It is possible to prevent the part from being biased to the edge, and as a result, the chip 21 flies stably in a predetermined direction when the last sticking point 24a is irradiated with light energy and the chip 21 is laser lifted off.
- the transfer device 1 and the transfer device 10 irradiate the transfer substrate 22 with light energy to transfer the chip 21 held by the transfer substrate 22 to the transferred substrate 23 using laser lift-off. Equipped with a laser irradiation unit 11 (active energy ray irradiation unit) that emits the laser beam B to be formed, and a light energy shift unit 16 that adjusts the irradiation position of the light energy with respect to the transfer substrate 22.
- the laser light source 11 is held on the transfer substrate 22 via a plurality of adhesive points 24a provided on the surface (illuminated surface S) facing the chip 21 of the laser light source 11. By irradiating light energy to 24a individually, the chip 21 is transferred to the transferred substrate 23 arranged so as to face the transfer substrate 22 with the chip 21 interposed therebetween.
- the contact area between the chip 21 and the transfer substrate 22 via the adhesive point 24a can be reduced, so the output of the laser beam B for transferring one chip 21 is suppressed. As a result, the chip 21 can be reliably transferred to the transferred substrate 23 while suppressing the running cost.
- the transfer device 1 further includes a phase diffraction element 13 that converts the laser beam B emitted from the laser light source 11 into a beam bundle B1 composed of a plurality of beams.
- the light energy is simultaneously applied to all the adhesive points 24a to be attached. By doing so, the time required for laser lift-off of one chip 21 can be relatively shortened.
- the laser light source 11 irradiates the plurality of adhesive points 24a holding one chip 21 with light energy in order from the adhesive point 24a positioned on the outer side to the adhesive point 24a positioned on the inner side. do. By doing so, it is possible to prevent the portion where the chip 21 is held from being biased toward the end, and the chip 21 can be stably flown in a predetermined direction.
- the laser light source 11 irradiates light energy to a plurality of adhesive points 24a holding one chip 21 so that the trajectory of light energy irradiation becomes spiral.
- the part where the chip 21 is held is always prevented from being biased toward the edge until the last sticking point 24a is irradiated with light energy, so that the chip 21 can fly stably in a predetermined direction.
- the laser light source 11 irradiates all the adhesive points 24a holding one chip 21 with light energy of uniform power. By doing so, the control is easy and the chip 21 can be stably flown in a predetermined direction.
- the transfer device 100 includes a laser irradiation unit 102 that irradiates a laser beam 101, a transfer substrate gripping unit 103 that holds the transfer substrate 22 and can move in at least the X-axis direction and the Y-axis direction, and a A transfer substrate holding portion 104 that holds the transfer substrate 23 so as to face the transfer substrate 22 with a gap therebetween and a control unit (not shown) are provided, and the transfer substrate 22 is irradiated with the laser beam 101 . causes ablation in the transfer substrate, and the chip 21 is transferred from the transfer substrate 22 to the transferred substrate 23 .
- the laser irradiation unit 102 is an embodiment of the active energy ray irradiation unit in the present invention, is a device that irradiates laser light 101 such as an excimer laser that is an active energy ray, and is fixed to the transfer device 100 .
- the laser irradiation unit 102 irradiates a spot-shaped laser beam 101, and the laser beam 101 passes through a galvanomirror 105 and an f ⁇ lens 106 whose angle is adjusted by the control unit.
- the irradiation position in the direction is controlled, and a plurality of chips 21 arranged on the transfer substrate 22 held by the transfer substrate holding portion 103 are selectively irradiated.
- the transfer substrate gripping portion 103 has an opening and grips the transfer substrate 22 in the vicinity of its outer peripheral portion by suction. A laser beam 101 emitted from a laser irradiation unit 102 can be applied through this opening to the transfer substrate 22 held by the transfer substrate gripping unit 13 .
- the transfer substrate 22 is a substrate made of glass or the like and capable of transmitting the laser beam 101, and holds the chip 21 on the lower surface side. Further, an ablation layer 24, which will be described later, is formed on the surface of the transfer substrate 22 that holds the chip 21, and the surface of the ablation layer 24 has adhesiveness. The adhesive force of the surface of the ablation layer 24 serves as a holding force for the chip 21 and holds the chip 21 by adhesion.
- the transfer substrate gripping portion 103 is moved relative to the transfer substrate gripping portion 104 at least in the X-axis direction and the Y-axis direction by a moving mechanism (not shown).
- a control unit (not shown) controls this moving mechanism and adjusts the position of the transfer substrate gripping unit 103, thereby adjusting the relative position of the chip 21 held on the transfer substrate 22 with respect to the transferred substrate 23.
- the transfer substrate holding part 104 has a flat upper surface, and during the transfer process of the chip 21, the ablation layer 24 of the transfer substrate 22 and the chip 21 held by the ablation layer 24 and the transfer surface of the transfer substrate 23 face each other.
- the substrate to be transferred 23 is gripped so as to do so.
- a plurality of suction holes are provided on the upper surface of the transfer substrate gripping portion 104, and the back surface of the transfer substrate 23 (the surface to which the chips 21 are not transferred) is gripped by a suction force.
- the transfer substrate 23 in this embodiment is a substrate made of glass or the like, and the surface to be transferred (the surface on the side that receives the chip 21) has adhesiveness, and the chip transferred from the transfer substrate 22 is adhesive. 21 is adhesively held.
- the transfer substrate gripping portion 103 moves in the X-axis direction and the Y-axis direction so that the transfer substrate gripping portion 103 and the transferred substrate gripping portion 104 move relative to each other. If the substrate to be transferred 23 has a large dimension and the entire surface of the substrate to be transferred 23 cannot be positioned directly under the irradiation range of the laser beam 101, the substrate to be transferred gripping portion 104 also has a moving mechanism in the X-axis direction and the Y-axis direction. It may be provided.
- the ablation layer 24 is formed on the surface of the transfer substrate 22 that holds the chip 21 as described above.
- the ablation layer 24 has adhesiveness on the surface and is ablated by being irradiated with the laser beam 11 .
- the ablation layer 24 is formed on the entire surface of the transfer substrate 22 on the side of the chip 21 holding side.
- the range in which one chip 21 is held in the ablation layer 24 is called a holding region R in this description.
- the material of the ablation layer 24 is decomposed near the interface between the ablation layer 24 and the main body of the transfer substrate 22, generating gas. That is, ablation occurs.
- the surface side of the ablation 24 remains.
- a blister 25 (bulge) corresponding to the irradiation range BR of the laser beam 101 is formed.
- the irradiation range BR of the laser beam 101 is smaller than the holding region R, and the range in which the blisters 25 are generated by one irradiation of the laser beam 101 is also the holding region R. less than
- the controller controls the galvanomirror 105 or the like so that the irradiation points of the laser beams 101 in the holding area R are appropriately spaced apart, so that the laser beams 101 are arranged as shown in FIG.
- the blisters 25 generated by the irradiation can be formed independently for each laser beam irradiation. That is, the blisters 25 can be individually formed without the blisters 25 coalescing.
- the adhesive holding power of the chip 21 by the ablation layer 24 is approximately proportional to the contact area, the adhesive holding power is greatly reduced after the blister 25 occurs.
- this adhesive holding force becomes smaller than the force that separates the chip 21, which is the sum of the kinetic energy and gravity applied to the chip 21 by the generation of the blister 25, the chip 21 is transferred to the transfer substrate as shown in FIG. 9(d). 22 and transferred to a substrate 23 to be transferred.
- the contact area between the ablation layer 24 and the chip 21 is reliably reduced by irradiating the laser beam 101 having the irradiation range BR smaller than the holding region R at a plurality of locations in the holding region R to cause ablation. , and the chip 21 can be reliably separated from the transfer substrate 22 . Also, since there is no need to increase the laser diameter, an increase in running costs can be prevented.
- FIG. 10 is an AA view shown in FIG. 9(a), and shows the irradiation procedure of the laser beam 101 for transferring one chip 21 in the transfer device 100 of this embodiment.
- FIG. 10 shows that the laser beam 101 having the irradiation range BR is irradiated nine times within the holding region R of the ablation layer 24 .
- the holding region R is irradiated with the laser beam 101 in order from the outside to the inside.
- FIG. 10 shows that ablation occurs only in the upper left irradiation range BR, which is the start point, of the nine irradiation ranges BR immediately after the start of transfer.
- the blisters 25 are formed according to the irradiation order of the laser beams 101. It is possible to prevent the tip 21 from becoming cantilevered during the process until the blister 25 is formed. As a result, when the chip 21 is peeled off, variations in the falling direction can be prevented, and the chip 21 can be transferred to the transferred substrate 23 with good positional accuracy.
- FIG. 11 shows an irradiation procedure of laser light 101 in another embodiment.
- the laser light 11 is simultaneously irradiated to all the irradiation locations within the holding region R, and a plurality of blisters 25 are formed simultaneously.
- a plurality of blisters 25 are formed simultaneously.
- the ablation layer 24 is not limited to the form in which the blisters 25 are generated by the irradiation of the laser beam 101, and as shown in FIG. It may also be in a form in which it disappears. Even in this case, by irradiating the laser beam 101 having the irradiation range BR at a plurality of locations in the holding region R, ablation is performed in each irradiation range BR as in the processes shown in FIGS. As the layer 24 disappears, the contact area between the ablation layer 24 and the chip 21 can be reliably reduced. When the adhesion holding force of the chip 21 by the ablation layer 24, which is proportional to the contact area, becomes smaller than the force separating the chip 21, the chip 21 is separated from the transfer substrate 22 as shown in FIG. It is transferred to the substrate 23 .
- the chip 21 can be transferred to the transferred substrate 23 with good positional accuracy.
- FIG. 13 shows a transfer substrate 22 according to another embodiment of the present invention.
- the ablation layer 24 is formed on the entire surface of the transfer substrate 22 on which the chip 21 is held.
- the holding area R has an adhesive holding force to the chip 21, and the holding portion 24a where the blister 25 is generated by the irradiation of the laser beam 101, and the adhesive holding portion 24a. Therefore, there is a non-holding portion 24b that does not have a holding force for the chip 21 and does not cause ablation or blistering even if the laser beam 101 is irradiated.
- the holding portions 24a are arranged in a zigzag manner, and the respective holding portions 24a are separated by the non-holding portions 24b.
- the chip 21 is separated from the transfer substrate 22 by irradiating each holding portion 24a with a laser beam 101 having an irradiation range BR to cause a blister 25 at each holding portion 24a.
- the non-retaining portions 24b prevent the blisters 25 generated at the respective holding portions 24a from coalescing. As a result, the chip 21 is finally held by a plurality of small blisters 25 as in FIG. can do.
- the non-holding portion 24b since the non-holding portion 24b is present, the number of irradiation points of the laser beam 101 required for peeling off the chip 21 is reduced compared to the form in which the entire holding region R is the ablation layer 24, resulting in transfer time and running cost. can be reduced.
- the ablation layer 24 is first formed on the entire surface of the transfer substrate 22 on the side holding the chip 21 as in the above-described embodiment. . That is, the non-retaining portion 24b is originally the same material as each retaining portion 24a. A portion corresponding to the non-holding portion 24b is selectively irradiated with ultraviolet rays to cure the portion. As a result, the non-holding portion 24b that is not sticky and does not cause abrasion is formed.
- the transfer device and transfer substrate of the present invention are not limited to the forms described above, and may be of other forms within the scope of the present invention.
- the light beam image 2 formed by the phase diffraction element 13 in the transfer device 1 of the first embodiment does not necessarily have to be a matrix of light beams as shown in FIG.
- the light beams may be arranged in a zigzag pattern in accordance with the arrangement of the adhesive portions 24 .
- the transfer substrate gripping means may move the transfer substrate 22 in the X-axis direction and the Y-axis direction to change the position relative to the light beam image 2, thereby functioning as the light energy shifting means.
- the transferred substrate gripping means is also provided with a mechanism for moving the transferred substrate 23 in the X-axis direction and the Y-axis direction, and the positions where the chips 21 on the transferred substrate 23 are transferred are adjusted.
- all the adhesive points 24 holding one chip 21 are not necessarily irradiated with light energy at the same time. good.
- the number of laser beams forming the beam B1'' (2 ⁇ 2 in FIG. 8) is larger than the number of adhesive points 24a holding the chip 21 (6 ⁇ 6 in FIG. 8).
- the chip 21 may be separated from the transfer substrate 22 by sequentially irradiating a plurality of light energies.
- the time interval between light energy irradiations may or may not be uniform.
- the last time interval may be set longer than the other time intervals.
- the light energy is necessarily irradiated in order from the outer adhesive point 24a to the inner adhesive point 24a. is not limited to
- the irradiation range of the light energy was spot-shaped, but it may be line-shaped.
- the adhesive points are also linear like the adhesive points 24' shown in FIG.
- the adhesive point 24a irradiated with the laser beam B or the light beam B1 completely disappears. and the adhesive point 24, and the adhesive point 24a may remain on the chip 21 side even after the laser beam B or the light beam B1 is irradiated. By doing so, the adhesive points 24a remaining on the chip 21 stick to another base material W later, so that the transfer of the chip 21 by laser lift-off can be performed again.
- the power of the laser beam 101 irradiated to a plurality of locations in the holding region R may be uniform, and the closer to the central portion of the holding region R, the higher the power, for example. It may be uniform.
- the holding portions 24a are arranged in a zigzag pattern, but the arrangement is not limited to this and may be, for example, in a matrix pattern. Alternatively, they may be arranged irregularly. Further, the holding portions 24a do not need to be completely separated from each other, and the corner portions may be slightly connected within a range that prevents the blister 25 from being combined.
- the irradiation range BR of the laser beam 101 is smaller than the holding region R, but this is not necessarily the case, and the irradiation range BR of the laser beam 101 may be larger than the holding region R. Then, as shown in FIGS. 17A and 17B, the laser light 101 may be irradiated while slightly shifting the irradiation range BR, so that a plurality of locations in the holding region R are sequentially ablated.
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Abstract
Description
本発明の第1実施形態における転写装置1について、図1を参照して説明する。図1(a)は転写装置1の側面図であり、図1(b)は、転写装置1の上面図である。
本発明の第2実施形態における転写装置10について、図5を参照して説明する。図5(a)は転写装置10の側面図であり、図5(b)は、転写装置10の上面図である。また、第1実施形態の転写装置1の構成要素と同じ構成要素には、同一の符号を付している。
本発明の第3実施形態における転写装置について、図8を参照して説明する。
2 光線像
10 転写装置
11 レーザ照射部(活性エネルギー線照射部)
12 ビームエキスパンダー
13 位相回折素子
14 ズームレンズ(可変焦点光学系)
15 コリメートレンズ
16 ガルバノミラー(光エネルギーシフト手段)
17 Fθレンズ
18 アパーチャ部材
18’ アパーチャ部材
19 アパーチャ
19’ アパーチャ
21 チップ(素子)
22 転写基板
23 被転写基板
24 アブレーション層
24a 粘着ポイント(保持部位)
24b 被保持部位
25 ブリスター
91 素子
92 転写基板
93 ブリスター
100 転写装置
101 レーザ光(活性エネルギー線)
102 レーザ照射部(活性エネルギー線照射部)
103 転写基板把持部
104 被転写基板把持部
105 ガルバノミラー
106 Fθレンズ
B レーザ光
B1 光線束
B1’ 光線束
B1’’ 光線束
BR 照射範囲
R 保持領域
L 軌跡
S 被照射面
W 基材
Claims (14)
- 転写基板が有するアブレーション層へ活性エネルギー線を照射してアブレーションを生じさせることにより、当該アブレーション層が保持する素子を前記転写基板から被転写基板へ転写させる転写装置であり、
前記転写基板を把持する転写基板把持部と、
前記転写基板の前記アブレーション層と前記被転写基板が対向するように前記被転写基板を把持する被転写基板把持部と、
前記転写基板把持部に保持された前記転写基板の前記アブレーション層へ活性エネルギー線を照射する活性エネルギー線照射部と、
を備え、
前記活性エネルギー線照射部は、前記アブレーション層において1つの素子を保持する保持領域の複数箇所に活性エネルギー線を照射することを特徴とする、転写装置。 - 活性エネルギー線の照射範囲は、前記保持領域よりも小さいことを特徴とする、請求項1に記載の転写装置。
- 前記アブレーション層は、アブレーションにより消失することを特徴とする、請求項1もしくは2に記載の転写装置。
- 前記アブレーション層は、アブレーションによりブリスターを生じることを特徴とする、請求項1もしくは2に記載の転写装置。
- 前記活性エネルギー線照射部は、各々の活性エネルギー線の照射毎に前記ブリスターが形成されるよう、活性エネルギー線を照射する箇所が制御されることを特徴とする、請求項4に記載の転写装置。
- 前記アブレーション層は、各々独立した複数の保持部位により構成されており、1つの素子を保持する複数の前記保持部位に個別に前記活性エネルギー線が照射されることを特徴とする、請求項1から5のいずれかに記載の転写装置。
- 前記アブレーション層の前記保持領域には、素子に対する保持力を有し、活性エネルギー線の照射によりブリスターが生じる保持部位と、素子に対する保持力を有さず、活性エネルギー線によるブリスターを生じない非保持部位と、が混在することを特徴とする、請求項4もしくは5に記載の転写装置。
- 前記活性エネルギー線照射部は、1つの素子を保持する複数の前記保持部位に対し、所定の順序で活性エネルギー線を照射することを特徴とする、請求項6もしくは7に記載の転写装置。
- 前記活性エネルギー線照射部は、1つの素子を保持する複数の前記保持部位に対し、外寄りに位置する前記保持部位から内寄りに位置する前記保持部位へ順に活性エネルギー線を照射することを特徴とする、請求項8に記載の転写装置。
- 前記活性エネルギー線照射部は、1つの素子を保持する複数の前記保持部位に対し、活性エネルギー線の照射の軌跡が渦巻き状となるよう活性エネルギー線を照射することを特徴とする、請求項8もしくは9のいずれかに記載の転写装置。
- 前記活性エネルギー線照射部から出射された活性エネルギー線は複数本の活性エネルギー線からなるエネルギー線束に変換され、前記エネルギー線束は、1つの素子を保持する全ての前記保持部位に対し、同時に活性エネルギー線を照射することを特徴とする、請求項6もしくは7に記載の転写装置。
- 前記活性エネルギー線照射部は、1つの素子を保持する全ての前記保持部位に対し、均等なパワーの活性エネルギー線を照射することを特徴とする、請求項6から11のいずれかに記載の転写装置。
- 転写基板に光エネルギーを照射することにより、レーザリフトオフを利用して当該転写基板が保持する転写対象を被転写基板へ転写する転写装置であり、
前記光エネルギーを形成するレーザ光を射出するレーザ光源と、
前記転写基板に対する前記光エネルギーの照射位置を調節する光エネルギーシフト手段と、
を備え、
前記転写対象は、前記転写基板の前記転写対象と対向する面に設けられた複数の粘着ポイントを介して前記転写基板に保持されており、前記レーザ光源は、1つの前記転写対象を保持する複数の前記粘着ポイントに個別に前記光エネルギーを照射することにより、前記転写対象を挟んで前記転写基板に対向するよう配置された前記被転写基板へ前記転写対象を転写することを特徴とする、転写装置。 - 活性エネルギー線の照射によりアブレーションが生じるアブレーション層で素子を保持する転写基板であり、
前記アブレーション層における1つの素子を保持する保持領域には、
素子に対する保持力を有し、活性エネルギー線の照射によりブリスターが生じる保持部位と、
素子に対する保持力を有さず、活性エネルギー線によるブリスターを生じない非保持部位と、が混在することを特徴とする、転写基板。
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JP2006041500A (ja) * | 2004-06-23 | 2006-02-09 | Sony Corp | 素子の転写方法、素子の間引き方法及び素子の転写装置 |
JP2014515883A (ja) * | 2011-04-11 | 2014-07-03 | エヌディーエスユー リサーチ ファウンデーション | レーザで促進される、分離した部品の選択的な転写 |
JP2020188261A (ja) * | 2017-06-12 | 2020-11-19 | ユニカルタ・インコーポレイテッド | 基板上に個別部品を並列に組み立てる方法 |
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2021
- 2021-12-24 EP EP21923258.4A patent/EP4286089A1/en active Pending
- 2021-12-24 KR KR1020237028680A patent/KR20230135636A/ko unknown
- 2021-12-24 WO PCT/JP2021/048087 patent/WO2022163255A1/ja active Application Filing
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2023
- 2023-07-20 US US18/355,484 patent/US20230360936A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006041500A (ja) * | 2004-06-23 | 2006-02-09 | Sony Corp | 素子の転写方法、素子の間引き方法及び素子の転写装置 |
JP2014515883A (ja) * | 2011-04-11 | 2014-07-03 | エヌディーエスユー リサーチ ファウンデーション | レーザで促進される、分離した部品の選択的な転写 |
JP2020188261A (ja) * | 2017-06-12 | 2020-11-19 | ユニカルタ・インコーポレイテッド | 基板上に個別部品を並列に組み立てる方法 |
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US20230360936A1 (en) | 2023-11-09 |
EP4286089A1 (en) | 2023-12-06 |
KR20230135636A (ko) | 2023-09-25 |
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