WO2022168998A1 - 반도체 발광소자의 전사용 롤러부의 전극구조 및 이를 포함하는 지능형 조립전사 통합장치 - Google Patents
반도체 발광소자의 전사용 롤러부의 전극구조 및 이를 포함하는 지능형 조립전사 통합장치 Download PDFInfo
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- WO2022168998A1 WO2022168998A1 PCT/KR2021/001407 KR2021001407W WO2022168998A1 WO 2022168998 A1 WO2022168998 A1 WO 2022168998A1 KR 2021001407 W KR2021001407 W KR 2021001407W WO 2022168998 A1 WO2022168998 A1 WO 2022168998A1
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- assembly
- roller
- semiconductor light
- light emitting
- emitting device
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- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
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Definitions
- the embodiment relates to a device for assembling, transferring, and integrating a semiconductor light emitting device. Specifically, the embodiment relates to an electrode structure of a roller portion for transfer of a semiconductor light emitting device and an intelligent assembly transfer integration device including the same.
- the large-area display technology includes a liquid crystal display (LCD), an OLED display, or a micro-LED display.
- LCD liquid crystal display
- OLED organic light-emitting diode
- micro-LED display is a display using a micro-LED, which is a semiconductor light emitting device having a diameter or cross-sectional area of 100 ⁇ m or less, as a display device.
- Micro-LED display has excellent performance in contrast ratio, response speed, color gamut, viewing angle, brightness, resolution, lifespan, luminous efficiency, and luminance because micro-LED is used as a display element.
- the micro-LED display has the advantage of being able to separate and combine the screens in a modular way, so that the size or resolution can be freely adjusted, and it also has the advantage of being able to implement a flexible display.
- micro-LED display requires millions of semiconductor light emitting devices, there is a technical problem in that it is difficult to quickly and accurately transfer the semiconductor light emitting devices to the display panel.
- Transfer technologies that have been recently developed include a pick and place process, a laser lift-off method, or a self-assembly method.
- the self-assembly method is a technology in which a semiconductor light emitting device finds an assembly position by itself in a fluid, and is advantageous for realization of a large-screen display device.
- US Patent No. 9,825,202 has proposed a micro-LED structure suitable for self-assembly, but research on a technology for manufacturing a display by self-assembly of micro-LED is still insufficient.
- the transfer speed can be improved, but the transfer error rate can be high, so that the transfer yield is lowered. there is a problem.
- the transfer speed is lowered, which is a technical contradiction problem.
- One of the technical tasks of the embodiment is to provide an intelligent assembly transfer integration device capable of simultaneously improving a transfer speed and a transfer yield in transferring semiconductor light emitting devices to a display panel.
- an intelligent assembly transcription unit is being researched and developed as an undisclosed internal technology.
- the assembly board mounted on the rotating part of the self-assembly roller comes in contact with the O-ring of the bath, and the electrode on the assembly board is damaged by mutual frictional force.
- one of the technical problems of the embodiment is to provide an electrode structure of a roller part for a transfer of a semiconductor light emitting device capable of preventing the problem of damage to the electrode of the assembling substrate, and an intelligent assembly transfer integration device including the same.
- the electrode structure of the transfer roller of the semiconductor light emitting device includes a roller rotating unit, an assembly substrate mounted on the roller rotating unit, an adhesive film disposed between the roller rotating unit and the assembling substrate, and penetrating through the assembly substrate It may include an electrode and a roller pad electrode disposed on the roller rotating part and electrically connected to the through electrode.
- the assembly substrate may include a base portion, a plurality of assembly electrodes and assembly pad electrodes disposed on the base portion, and a dielectric layer on the base portion.
- the through electrode may pass through the base portion and the adhesive film to be electrically connected to the assembly pad electrode.
- the roller pad electrode includes a first pad electrode disposed on a first surface of the roller rotating part, a second pad electrode disposed on a side surface of the roller rotating part, and a third pad electrode disposed on a second surface of the roller rotating part.
- the roller pad electrode includes a first pad electrode disposed on a first surface on the adhesive film, a second pad electrode and a fourth pad electrode disposed on a side surface of the roller rotating unit, and a second surface of the roller rotating unit. It may include a third pad electrode that becomes
- the through electrode may pass through the base portion to be electrically connected to the assembly pad electrode.
- the assembly substrate may include a base portion, a plurality of assembly electrodes and assembly pad electrodes disposed on the base portion, and a dielectric layer on the base portion, and the dielectric layer may be disposed to cover the plurality of assembly electrodes. .
- the dielectric layer may be disposed to cover the plurality of assembly electrodes and the assembly pad electrode.
- the roller pad electrode may include a 2-1 pad electrode disposed on the first surface of the roller rotating part, a 2-3 pad electrode disposed on the second surface of the roller rotating part, and the 2-1 pad electrode and the A 2-2 th pad electrode disposed between the 2-3 th pad electrode may be included.
- the 2-2 pad electrode may pass through the roller rotating part.
- Intelligent assembly transfer integration device a fluid chamber for accommodating semiconductor light emitting devices, a roller unit on which the assembly substrate on which the semiconductor light emitting device is assembled is mounted and rotated, and the semiconductor light emitting device assembled on the assembly substrate to inspect and an assembly inspection unit, wherein the roller unit may include an electrode structure of a roller unit for transfer of any one of the semiconductor light emitting devices.
- the intelligent assembly transfer integration device includes a fluid chamber 300 accommodating the semiconductor light emitting devices 150 and the roller unit 200 on which the assembly substrate 210 on which the semiconductor light emitting device 150 is assembled is mounted and rotated. ) and an assembly inspection unit 500 for inspecting the semiconductor light emitting device 150 assembled on the assembly substrate 210 .
- the roller unit 200 includes a roller rotating unit 220 on which the assembly substrate 210 is mounted and rotated, a roller driving unit 230 for rotatingly driving the roller rotating unit 220 and the semiconductor light emitting device 150 . It may include a magnet head 400 to be assembled to the assembly substrate 210 by applying a magnetic force.
- the assembly inspection unit 500 may inspect the assembly state for each line in the width direction of the assembly substrate 210 to control the transfer process not to proceed to the panel substrate 910 in the case of unassembled or defective assembly.
- a predetermined panel chuck moves the panel substrate 910 to the assembly substrate 210 ) and the panel substrate 910 , it is possible to control so that the semiconductor light emitting device 150 at an error position is not transferred to the panel substrate 910 .
- the panel chuck may be disposed on a side surface, an upper surface, or a bottom surface of the panel substrate 910 to separate the panel substrate 910 from the assembly substrate 210 .
- the magnetic head 400 may evenly apply a magnetic force to the semiconductor light emitting device 150 by rotating or horizontally moving.
- the panel chuck may have a function of rotating the panel substrate 910 so that the second panel substrate 912 is moved in an inclined state.
- the panel driving unit 920B includes a 2-1 panel driving unit 920b1 and a 2-2 panel driving unit 920b2, wherein the 2-1 panel driving unit 920b1 includes the 2-2 panel driving unit ( 920b2) and may be disposed at a different height.
- the roller unit may have a triangular shape or a round shape.
- the area of the 1-1 roller part assembled between the semiconductor light emitting device 150 and the assembly substrate 210 is larger than the area of the 1-2 roller part where the semiconductor light emitting device 150 is transferred to the panel substrate 910 . can be wide
- the fluid chamber 300 may further include a second magnet head portion 420 disposed below.
- the intelligent assembly and transfer integration apparatus of the semiconductor light emitting device there is a technical effect of simultaneously improving the transfer speed and the transfer yield in transferring the semiconductor light emitting devices to the display panel.
- the semiconductor light emitting device 150 is assembled on a transfer substrate 210 , and the assembled semiconductor light emitting device 150 is in-line to the panel substrate 110 . Immediate transfer can significantly improve the transfer speed.
- the transfer yield can be significantly increased by selectively transferring the semiconductor light emitting devices 150 assembled on the transfer substrate 210 to the panel substrate 910 only when they are normal after performing real-time inspection. . Accordingly, according to the embodiment, there is a special technical effect that can solve a problem in which a technical contradiction between the transfer speed and the transfer yield occurs by simultaneously increasing the transfer rate and the transfer yield.
- a portion where the assembly substrate 210 and the flat panel substrate 910 on the roller unit 200 meet may be line-transferred in the width direction of the roller unit 200 .
- 100% transfer yield can be realized.
- the embodiment even if there is a defect in the assembly substrate or a defect in the semiconductor light emitting device, it is possible to avoid the transfer, thereby minimizing the dependence on the quality of the semiconductor light emitting device.
- roller unit is configured as a multi, high-speed transfer can be realized.
- the second roller pad electrode is not disposed on the side of the roller rotating part, the fear of receiving electrical damage from the fluid, etc. is prevented, so that the electrical reliability is remarkably improved, and the overall size of the water tank and the rotating part is reduced This has the effect of increasing the degree of spatial freedom.
- FIG. 1 is an exemplary view in which a display device 100 according to an embodiment is disposed in a living room together with a washing machine 10, a robot cleaner 20, an air purifier 30, and the like.
- FIG. 2A is an enlarged view of area A1 in FIG. 1 ;
- Fig. 2B is an enlarged view of area A2 in Fig. 2A;
- FIG. 2C is a cross-sectional view of the semiconductor light emitting device 150 of FIG. 2B.
- FIG. 3 is a conceptual diagram of an intelligent assembly transcription unit 1000 according to an embodiment.
- FIG. 4 is an enlarged view of the area B1 of the assembly substrate 210 in the intelligent assembly transfer integration apparatus 1000 according to the embodiment shown in FIG. 3 .
- 5A and 5B are perspective views of the magnet head unit 400 in the intelligent assembly transfer integration apparatus 1000 according to the embodiment shown in FIG. 3 .
- Figure 6 is an operational example of the intelligent assembly transcription unit 1000 according to the embodiment.
- FIG. 7 is a conceptual diagram of a tilting of the panel substrate 110 in the embodiment.
- FIG. 8 is a conceptual diagram of an intelligent assembly transcription unit 1000 according to an embodiment.
- FIG. 9 is an enlarged view of the first roller part electrode structure (C1) in the intelligent assembly transfer integration apparatus 1000 according to the embodiment shown in FIG.
- FIG. 10 is an enlarged view of the second roller part electrode structure C2 in the intelligent assembly transfer integration apparatus 1000 according to the embodiment shown in FIG. 8 .
- FIG. 11 is a conceptual diagram of an intelligent assembly transcription unit 1002 according to a second embodiment.
- FIG. 12 is an enlarged view of a third roller part electrode structure C3 in the intelligent assembly transfer integration apparatus 1002 according to the second embodiment shown in FIG. 11 .
- FIG. 13 is an enlarged view of the fourth roller part electrode structure (C4) in the intelligent assembly transfer integration apparatus 1002 according to the second embodiment shown in FIG.
- the display device described in this specification includes a digital TV, a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation system, a slate ) PCs, Tablet PCs, Ultra-Books, desktop computers, and the like.
- PDA personal digital assistant
- PMP portable multimedia player
- a navigation system a slate
- Tablet PCs Ultra-Books
- desktop computers and the like.
- the embodiments described in the present specification may be applied to devices capable of displaying even in a new product form to be developed later.
- FIG. 1 is an exemplary view in which a display device 100 according to an embodiment is disposed in a living room together with a washing machine 10 , a robot cleaner 20 , an air purifier 30 , and the like.
- the display device 100 of the embodiment may display the status of various electronic products such as the air purifier 30 , the robot cleaner 20 , and the washing machine 10 , and may communicate with each electronic product based on IOT, and a user It is possible to control each electronic product based on the setting data of .
- the display apparatus 100 may include a flexible display manufactured on a thin and flexible substrate.
- the flexible display may be bent or rolled like paper while maintaining characteristics of a conventional flat panel display.
- visual information may be implemented by independently controlling light emission of unit pixels arranged in a matrix form.
- the unit pixel means a minimum unit for realizing one color.
- the unit pixel of the flexible display may be implemented by a semiconductor light emitting device.
- the semiconductor light emitting device may be a Micro-LED.
- FIG. 2A is an enlarged view of area A1 in FIG. 1
- FIG. 2B is an enlarged view of area A2 in FIG. 2A
- FIG. 2C is a cross-sectional view of the semiconductor light emitting device 150 in FIG. 2B .
- the display device 100 may drive the semiconductor light emitting device by an active matrix (AM) method, but is not limited thereto. can also be driven
- AM active matrix
- the display device 100 includes a panel substrate 910 , a first panel electrode 920 , a second panel electrode (not shown), an insulating layer 930 , and a plurality of semiconductor light emitting devices. (150).
- Each of the semiconductor light emitting devices 150 may include red, green, and blue semiconductor light emitting devices to form a sub-pixel, but is not limited thereto. and green can also be implemented.
- the panel substrate 910 may be formed of glass or polyimide.
- the panel substrate 910 may include a flexible material such as polyethylene naphthalate (PEN) or polyethylene terephthalate (PET).
- PEN polyethylene naphthalate
- PET polyethylene terephthalate
- the panel substrate 910 may be made of a transparent material, but is not limited thereto.
- the insulating layer 930 may include an insulating and flexible material such as polyimide, PEN, PET, etc., and may be integrally formed with the panel substrate 910 to form a single substrate.
- the insulating layer 930 may be a conductive adhesive layer having adhesiveness and conductivity, and the conductive adhesive layer may have flexibility to enable a flexible function of the display device.
- the insulating layer 930 may be an anisotropy conductive film (ACF) or a conductive adhesive layer such as an anisotropic conductive medium or a solution containing conductive particles.
- the conductive adhesive layer may be a layer that is electrically conductive in a direction perpendicular to the thickness, but has electrically insulating properties in a horizontal direction with respect to the thickness.
- FIG. 2C is a cross-sectional view of a vertical type semiconductor light emitting device as an example of the semiconductor light emitting device 150 applied to the display device 100 according to the embodiment.
- the semiconductor light emitting device that may be employed in the embodiment is not limited to the vertical type semiconductor light emitting device, and may include a lateral type semiconductor light emitting device or a flip type light emitting device.
- the semiconductor light emitting device employed in the embodiment is a p-n junction diode in which electric energy is converted into light energy, and may be made of a compound semiconductor including elements of groups III and V on the periodic table, and a band gap by adjusting the composition ratio of the compound semiconductor By controlling the energy, it is possible to realize various colors such as red, green and blue.
- the semiconductor light emitting device 150 may include a light emitting structure 151 , a first electrode 152a , and a second electrode 152b .
- the light emitting structure 151 may include a first conductivity type semiconductor layer 151a, an active layer 151b, and a second conductivity type semiconductor layer 151c.
- a pad electrode (not shown) may be further formed on the first electrode 152a or the second electrode 152b, but is not limited thereto.
- At least one of the first electrode 152a or the second electrode 152b may include a magnetic layer (not shown).
- the first conductivity type may be an n-type, and the second conductivity type may be a p-type, but is not limited thereto.
- the magnetic layer may include at least one of Ni, samarium-cobalt (SmCo), Gd-based, La-based, and Mn-based material.
- the magnetic layer may be disposed in a mesh shape or a dot shape to have excellent light transmittance.
- One of the technical tasks of the embodiment is to provide an intelligent assembly and transfer integration device for semiconductor light emitting devices that can simultaneously improve the transfer speed and the transfer yield in transferring the semiconductor light emitting devices to the display panel.
- FIG. 3 is a conceptual diagram of an intelligent assembly transcription unit 1000 according to an embodiment.
- 4 is an enlarged view of the area B1 of the assembly substrate 210 in the intelligent assembly transfer integration device 1000 according to the embodiment shown in FIG. It is a perspective view of the magnet head unit 400 in the assembly transfer integration device (1000).
- 6 is an exemplary operation view of the intelligent assembly transcription unit 1000 according to the embodiment.
- the intelligent assembly transfer integration apparatus 1000 may include a hydrophilic treatment unit 600 , a cleaning unit 700 , a drying unit 800 , and the like.
- the intelligent assembly transfer integration apparatus 1000 may include a panel driver 920 for horizontally moving the display panel substrate 910 and a panel chuck (not shown) for vertically moving the panel substrate 910 . .
- the semiconductor light emitting device 150 is assembled on a transfer substrate 210 , and the assembled semiconductor light emitting device 150 is transferred by being immediately transferred to the panel substrate 910 in-line.
- the speed can be significantly improved.
- the transfer yield can be significantly increased by selectively transferring the semiconductor light emitting devices 150 assembled on the transfer substrate 210 to the panel substrate 910 only when they are normal after performing real-time inspection. . Accordingly, according to the embodiment, there is a special technical effect that can solve a problem in which a technical contradiction between the transfer speed and the transfer yield occurs by simultaneously increasing the transfer rate and the transfer yield.
- the intelligent assembly transfer integration apparatus 1000 may include a fluid chamber 300 accommodating a plurality of semiconductor light emitting devices 150 , a hydrophilic treatment unit 600 , and the like.
- the fluid chamber 300 may be a water tank, and may be an open type or a closed type.
- the fluid chamber 300 may be filled with an assembly solution such as deionized water, but is not limited thereto.
- the hydrophilic treatment unit 600 may perform a hydrophilic treatment for wetting before the assembly substrate 210 receives the fluid.
- the embodiment may include a flexible assembly substrate 210 mounted on the roller unit 200 .
- the assembly substrate 210 may be referred to as a carrier substrate or a first transfer substrate.
- the assembly substrate 210 may be a flexible substrate that may be mounted on the roller rotating unit 220 .
- the assembly substrate 210 may be a flexible material that can be rolled like a roll, and may be a polymer such as polyimide or a thin metal substrate, but is not limited thereto.
- FIG. 4 is an enlarged view of region B1 of the assembly substrate 210 in the intelligent assembly transfer integration apparatus 1000 according to the embodiment shown in FIG. 3 .
- the assembly substrate 210 may include a base portion 210a, a dielectric layer 210b, and a plurality of assembly electrodes 210c to form an electric field.
- the base part 210a is made of an insulating material, and the plurality of assembly electrodes 210c may be thin or thick bi-planar electrodes patterned on one surface of the base part 210a.
- the assembly electrode 210c may be formed of a stack of Ti/Cu/Ti, Ag paste, ITO, or the like.
- the dielectric layer 210b is made of an inorganic material such as SiO 2 , SiNx, SiON, Al 2 O 3 , TiO 2 , HfO 2 .
- the dielectric layer 210b may be formed as a single layer or a multi-layer as an organic insulator.
- the assembly substrate 210 may include a plurality of cells 210d partitioned by the partition wall 210e.
- the cells 210d may be sequentially arranged in one direction.
- the partition walls 210e constituting the cells 210d may be shared with the neighboring cells 210d.
- the partition wall 210e may protrude upward from the base part 210a, and the cells 210d may be sequentially disposed along one direction by the partition wall 210e.
- the cells 210d are sequentially arranged in the column and row directions, respectively, and may have a matrix structure.
- the interior of the cells 210d may be an assembly groove for accommodating the semiconductor light emitting device 150 , and the assembly groove may be a space partitioned by the partition wall 210e.
- the shape of the assembly groove may be the same as or similar to the outer shape of the semiconductor light emitting device 150 .
- the assembly groove may have a rectangular shape.
- the assembly groove may be circular.
- one semiconductor light emitting device 150 may be accommodated in each cell.
- the plurality of assembly electrodes 210c may include a plurality of electrode lines disposed at the bottom of each of the cells 210d, and the plurality of electrode lines may extend to neighboring cells.
- the plurality of assembly electrodes 210c may be disposed below the cells 210d, and different polarities may be applied to each other to generate an electric field in the cells 210d.
- a dielectric layer 210b may cover the plurality of assembly electrodes 210c, and the dielectric layer 210b may form the bottom of the cells 210d.
- roller rotating part roller rotating part, roller driving part, magnet head part>
- the intelligent assembly transfer integration apparatus 1000 may include a roller unit 200 for rotating the assembly substrate 210 .
- the roller unit 200 may include a roller rotating unit 220 , a roller driving unit 230 , and a magnetic head unit 400 .
- the roller unit 200 includes a roller rotating unit 220 on which the assembly substrate 210 is mounted and rotated, a roller driving unit 230 driving the roller rotating unit 220 to rotate, and a semiconductor light emitting device 150 .
- a magnetic force to the assembly substrate 210 may include a magnet head unit 400 to be assembled.
- the roller unit 200 connects the assembly substrate 210 and the panel substrate 910 in one line or a plurality of lines.
- the semiconductor light emitting devices 150 may be transferred.
- the roller driving unit 230 may rotate the roller rotating unit 220 on which the assembly substrate 210 is mounted using the roller driving unit 230, and the roller driving unit 230 may include a single or a plurality of motors. may be, but is not limited thereto.
- the roller rotating unit 220 may be formed of a flexible material so that the mounted assembly substrate 210 rotates efficiently.
- the roller rotating part 220 may be in the form of a belt, but is not limited thereto.
- the roller rotating unit 220 may have a thickness of 5 mm or less so that the magnetic force of the magnet head unit 400 can be well transmitted to the semiconductor light emitting device 150 in a state in which the assembly substrate 210 is mounted, but is not limited thereto.
- the roller unit 200 may include a magnet head unit 400 that applies a magnetic force so that the semiconductor light emitting device 150 is attached to the assembly substrate 210 .
- Figure 5a is a perspective view of the magnet head unit 400 in the intelligent assembly transcription integration device 1000 according to the embodiment shown in Fig. 3
- Fig. 5b is a 180 degree inversion of the magnet head unit 400 shown in Fig. 5a is a perspective view.
- the magnet head part 400 may be positioned inside the roller part 200 to guide the semiconductor light emitting device 150 in the fluid chamber 300 toward the assembly electrode 210c of the assembly substrate 210 .
- the magnet head 400 may be one or plural.
- the magnet head 400 of the embodiment may include a plurality of magnets 410 .
- the magnet 410 is spaced apart from the fluid chamber 300 to apply a magnetic force to the semiconductor light emitting device 150 , and the position is controlled by a position controller (not shown) connected to the magnet 410 .
- the magnet 410 may be a permanent magnet or an electromagnet.
- the embodiment is provided with a magnet handler (not shown) capable of automatically or manually moving the magnet head unit 400, or provided with a motor (not shown) capable of rotating the magnet head unit 400;
- the head unit 400 may be rotated in a clockwise or counterclockwise direction (Z), and the magnet head unit 400 may be horizontally driven (X-Y) in a direction perpendicular to the rotation direction of the assembly substrate 210 .
- the magnet head 400 may be rotated to evenly distribute the magnetic force applied to the semiconductor light emitting device 150 to improve the assembly speed.
- the magnetic head part 400 more evenly distributes the magnetic force as it rotates while moving a predetermined section in a direction perpendicular to the rotation direction of the assembly substrate 210 to improve the assembly speed of the semiconductor light emitting device 150 and to assemble it at the same time. It can be uniformly assembled to the substrate 210 .
- the intelligent assembly transfer integration apparatus 1000 may include a cleaning unit 700 , a drying unit 800 , and an assembly inspection unit 500 .
- the cleaning unit 700 may remove the semiconductor light emitting device 150 attached to the outside of the assembly area of the assembly substrate 210 by spraying a solution onto an area other than the assembly area of the assembly substrate 210 , It can be sprayed to cover the whole.
- the drying unit 800 may apply hot air or heat to the semiconductor light emitting device 150 so that the assembly solution is evaporated before transfer.
- the assembly inspection unit 500 may inspect whether the semiconductor light emitting device 150 is assembled on the assembly substrate 210 or whether it is correctly assembled.
- the assembly inspection unit 500 may perform a line scan assembly inspection, and it may be possible to cover the entire line at once.
- the assembly inspection unit 500 may include a CCD image sensor, transmit an inspection result to a controller (not shown), and determine whether to transfer to the panel substrate 910 according to the inspection result.
- FIG. 6 is an exemplary operation view of the intelligent assembly transcription unit 1000 according to the embodiment.
- the intelligent assembly transfer integration apparatus 1000 may include a panel driver 920 for horizontally moving the display panel substrate 910 and a panel chuck (not shown) for vertically moving the panel substrate 910 .
- the panel driving unit 920 may be provided singly or in plurality, and two are illustrated in FIG. 6 , but the present invention is not limited thereto.
- the panel driving unit 920 may be driven by a motor, but is not limited thereto.
- the panel chuck may be disposed on a side surface, an upper surface, or a bottom surface of the panel substrate 910 to separate the panel substrate 910 from the assembly substrate 210 .
- the transfer process is performed on the panel substrate 910 by inspecting the assembly state for each line in the width direction of the assembly substrate 210 and transmitting line position information such as unassembled or defective assembly to the system controller (not shown). You can control it not to happen.
- the semiconductor light emitting device 150 when the semiconductor light emitting device 150 is not assembled or is not properly assembled among the pixels for each line on the assembly substrate 210, the semiconductor light emitting device 150 on the corresponding line is transferred so that it is not transferred to the panel substrate 910 .
- the semiconductor light emitting device 150 on the corresponding line is transferred so that it is not transferred to the panel substrate 910 .
- FIG. 7 is a conceptual diagram of a tilting of the panel substrate 910 in the embodiment.
- the panel chuck may have a fine rotation function of the panel substrate 910 so that the semiconductor light emitting device 150 may be more transferred from the assembly substrate 210 to the panel substrate 910 .
- the panel driving unit 920 may include a 1-1 panel driving unit 920a1 and a 1-2 panel driving unit 920a2 .
- the height of the first-first panel driver 920a1 and the first-second panel driver 920a2 may be the same, and accordingly, the panel substrate 910 moves while maintaining the horizontal position of the semiconductor light emitting device 150 . The war can proceed.
- the second panel driving unit 920B includes a 2-1 panel driving unit 920b1 and a 2-2 panel driving unit 920b2, but the second- The one-panel driver 920b1 may be disposed at a different height from the second-second panel driver 920b2.
- the 2-1 th panel driving unit 920b1 may be disposed lower than the 2-2nd panel driving unit 920b2 . Accordingly, the front end 912b1 of the second panel substrate 912 may be disposed lower than the rear end 912b2. As the second panel substrate 912 is moved in a tilted state, the semiconductor light emitting device 150 may be transferred. Accordingly, the transfer of the semiconductor light emitting device 150 from the assembly substrate 210 to the second panel substrate 912 may be more effectively performed.
- a portion where the assembly substrate 210 and the flat panel substrate 910 on the roller unit 200 meet may be line-transferred in the width direction of the roller unit 200 .
- 100% transfer yield can be realized.
- the embodiment even if there is a defect in the assembly substrate or a defect in the semiconductor light emitting device, it is possible to avoid the transfer, thereby minimizing the dependence on the quality of the semiconductor light emitting device.
- roller unit is configured as a multi, high-speed transfer can be realized.
- the semiconductor light emitting device 150 is put into the fluid chamber 300 , and the assembly substrate 210 is mounted on the roller unit 200 .
- a magnetic force is applied to the semiconductor light emitting device 150 using the magnet head unit 400 so that the semiconductor light emitting device 150 floats in the vertical direction in the fluid chamber 300 .
- the separation distance between the assembly surface of the assembly substrate 210 and the semiconductor light emitting device 150 may be controlled by adjusting the magnitude of the magnetic force.
- the separation distance may be controlled using the weight, buoyancy, and magnetic force of the semiconductor light emitting device 150 .
- a magnetic force is applied to the semiconductor light emitting device 150 so that the semiconductor light emitting device 150 moves in one direction in the fluid chamber 300 .
- the magnet of the magnet head 400 may be rotated in a clockwise or counterclockwise direction while moving in a direction perpendicular to the rotation direction of the assembly substrate 210 .
- an electric field is applied to the semiconductor light emitting device 150 so as to be seated at the assembly position of the assembly substrate 210 to guide the semiconductor light emitting device 150 to the assembly position.
- the semiconductor light emitting device 150 moves along the assembly substrate 210 , it moves in a direction perpendicular or horizontal to the assembly substrate 210 by an electric field to the assembly position of the assembly substrate 210 .
- the semiconductor light emitting device 150 is self-assembled at the assembly position of the assembly substrate 210 .
- the cleaning unit 700 can remove the semiconductor light emitting device 150 attached to the outside of the assembly area of the assembly substrate 210 by spraying the solution into an area other than the assembly area, and cover the entire line at once.
- the solution can be sprayed.
- the drying unit 800 may apply hot air or heat to the assembled semiconductor light emitting device 150 so that the assembly solution is evaporated before transfer.
- the assembly inspection unit 500 may inspect whether the semiconductor light emitting device 150 is assembled on the assembly substrate 210 or whether the assembly is defective.
- the assembly inspection unit 500 may perform a line scan assembly inspection, and may cover the entire line at once.
- the assembly inspection unit 500 may include a CCD image sensor, transmit the inspection result to the control unit, and determine whether to transfer to the panel substrate 910 according to the inspection result.
- line position information in the case of non-assembly or defective assembly by inspecting the assembly state for each line in the width direction of the assembly board 210 can be transmitted to the system controller to control the transfer process not to proceed to the panel substrate 910 .
- the semiconductor light emitting device 150 when the semiconductor light emitting device 150 is not assembled or is not properly assembled among the pixels for each line on the assembly substrate 210, the semiconductor light emitting device 150 on the corresponding line is transferred so that it is not transferred to the panel substrate 910 .
- the semiconductor light emitting device 150 on the corresponding line is transferred so that it is not transferred to the panel substrate 910 .
- a post-process for implementing a display device may be performed on the semiconductor light emitting device 150 transferred to the panel substrate 910 .
- FIG. 8 is a conceptual diagram of the intelligent assembly transcription unit 1000 according to the embodiment.
- the assembly substrate 210 is mounted on the roller rotating unit 220 , and the semiconductor light emitting device 150 is put into the fluid chamber 300 .
- a magnetic force is applied to the semiconductor light emitting device 150 in the fluid chamber 300 using the magnet head unit 400 .
- an electric field is applied to the semiconductor light emitting device 150 so as to be seated at the assembly position of the assembly substrate 210 to guide the semiconductor light emitting device 150 to the assembly position.
- the assembly substrate 210 may include an active region in which the semiconductor light emitting device 150 is assembled and a pad region (not shown) for applying power to the assembly substrate 210 .
- the fluid chamber 300 may include a water tank frame 310 to prevent the fluid from flowing out.
- the O-ring 320 may be disposed between the water tank frame 310 and the assembly substrate 210 to prevent external leakage of the fluid.
- the fluid flows out of the water tank frame 310, the fluid comes into contact with a pad region (not shown) other than the active region where the semiconductor light emitting device is assembled among the assembly substrate 210, thereby causing electrical and structural damage to the pad region. .
- the intelligent assembly transfer integration device 1000 in the undisclosed internal technology has the assembly substrate 210 mounted on the roller rotating unit 220 for self-assembly in contact with the O-ring 320 of the bath. There is a problem in that the electrodes in the pad area on the assembly substrate 210 are damaged by the mutual frictional force.
- one of the technical problems of the embodiment is to provide an electrode structure of a roller unit for transfer of a semiconductor light emitting device capable of preventing the problem of damage to the electrode of the assembling substrate, and an intelligent assembly transfer integration device including the same.
- FIG. 9 is an enlarged view of the first roller part electrode structure (C1) developed to solve the above technical problem in the intelligent assembly transfer integration apparatus 1000 according to the embodiment shown in FIG. 8 .
- the first roller part electrode structure C1 includes the roller rotating part 220 , the adhesive film 215 , the assembly substrate 210 , the through electrode 217a penetrating the assembly substrate 210 , and the roller pad electrode ( 217b).
- the assembly substrate 210 may include a base portion 210a, a dielectric layer 210b, a plurality of assembly electrodes 210c, an assembly pad electrode 210c2, and a barrier rib 210e.
- the base part 210a is made of an insulating material, and the plurality of assembly electrodes 210c may be thin or thick bi-planar electrodes patterned on one surface of the base part 210a.
- the dielectric layer 210b is made of an inorganic material such as SiO 2 , SiNx, SiON, Al 2 O 3 , TiO 2 , HfO 2 .
- the assembly substrate 210 may include a plurality of cells partitioned by the partition wall 210e. The partition wall 210e may protrude upward from the base portion 210a.
- the glass substrate may be removed by an LLO process, but is not limited thereto.
- the assembly substrate 210 may be mounted on the roller rotating unit 220 by an adhesive film 215 .
- the adhesive film 215 may include a first adhesive layer 215a, an intermediate layer 215b, and a second adhesive layer 215c.
- the second adhesive layer 215c may be in contact with the assembly substrate 210
- the first adhesive layer 215a may be in contact with the roller rotating unit 220 .
- the first and second adhesive layers 215a and 215c are UV film, PC (Polycarbonate), acrylic (PMMA, PolyMethyl MethAcrylate), polyethylene terephthalate (Polyethylene terephthalate), polyethylene (Polyethylene), polypropylene (Polypropylene), It may include at least one of polyester, but is not limited thereto.
- the intermediate layer 215b may be formed of an insulating material and may function as a base film.
- the first roller part electrode structure C1 may include a through electrode 217a penetrating through the assembly substrate 210 and a roller pad electrode 217b disposed on the roller rotating part 220 . .
- the embodiment may prevent the electrodes in the roller part electrode structure C1 from contacting the O-ring 320 by the above-mentioned national structure. Accordingly, according to the embodiment, there is a technical effect of preventing electrode damage due to friction by having a rear electrode structure in which the electrode portion in direct contact with the O-ring moves to the rear during self-assembly.
- the through electrode 217a may be formed before the assembly substrate 210 is mounted on the roller rotating unit 220 .
- a through hole (not shown) is formed in the adhesive film 215 , and then the adhesive film 215 may be formed by solder paste or the like, but is not limited thereto.
- the roller pad electrode 217b may include a first pad electrode 217b1 , a second pad electrode 217b2 , and a third pad electrode 217b3 .
- the first pad electrode 217b1 may be formed on the assembly substrate 210 or on the roller rotating unit 220, but is not limited thereto.
- the second pad electrode 217b2 may be disposed on a side surface of the roller rotating part 220
- the third pad electrode 217b3 may be disposed on the rear surface of the roller rotating part 220 , but is not limited thereto.
- a release film 322 is formed on the assembly substrate 210 to reduce frictional force with the O-ring 320 .
- FIG. 10 is an enlarged view of the second roller part electrode structure C2 in the intelligent assembly transfer integration apparatus 1000 according to the embodiment shown in FIG. 8 .
- the second roller part electrode structure (C2) may employ the technical characteristics of the first roller part electrode structure (C1).
- the second roller part electrode structure C2 may include a second through electrode 217a2 penetrating through the assembly substrate 210 and a roller pad electrode 217b disposed on the roller rotating part 220 .
- the roller pad electrode 217b may include a first pad electrode 217b1 , a second pad electrode 217b2 , a third pad electrode 217b3 , and a fourth pad electrode 217b4 .
- the second pad electrode 217b2 may be disposed on a side surface of the roller rotating part 220
- the fourth pad electrode 217b4 may be disposed on a side surface of the adhesive film 215 .
- the second pad electrode 217b2 and the fourth pad electrode 217b4 may be formed respectively, or may be formed integrally.
- the fourth pad electrode 217b4 may be formed on a side surface of the adhesive film 215 to be electrically connected to the first pad electrode 217b1
- the second pad electrode 217b2 may be formed on the roller It may be formed on the side surface of the rotating part 220 to be electrically connected to the third pad electrode 217b3.
- the first pad electrode 217b1 may be formed on the assembly substrate 210 .
- the third pad electrode 217b3 may be formed on the roller rotating part 220 . Thereafter, the assembly substrate 210 provided with the first pad electrode 217b1 may be mounted on the roller rotating unit 220 provided with the third pad electrode 217b3 using the adhesive film 215 .
- the second pad electrode 217b2 and the fourth pad electrode 217b4 may be integrally formed at once to electrically connect the first pad electrode 217b1 and the third pad electrode 217b3. have.
- the second through electrode 217a2 may be formed to penetrate the base portion 210a of the assembly substrate 210 without penetrating the adhesive film 215 .
- the electrode structure of the transfer roller of the semiconductor light emitting device According to the electrode structure of the transfer roller of the semiconductor light emitting device according to the embodiment and the intelligent assembly transfer integration device including the same, there is a technical effect that can prevent the electrode of the assembly substrate from being damaged.
- FIG. 11 is a conceptual diagram of the intelligent assembly transfer integration apparatus 1002 according to the second embodiment
- FIG. 12 is a third roller unit in the intelligent assembly transfer integration apparatus 1002 according to the second embodiment shown in FIG. 11 . It is an enlarged view of the electrode structure (C3).
- the intelligent assembly transcription integration device 1002 according to the second embodiment may employ the technical features of the intelligent assembly transcription integration device 1000 according to the first embodiment, and the following description will focus on the technical features of the second embodiment do it with
- the intelligent assembly transfer integration device 1002 has a special technical effect that can omit the O-ring itself.
- the third roller part electrode structure C3 in the second embodiment may adopt the technical characteristics of the first roller part electrode structure C1 in the first embodiment.
- the third roller part electrode structure C3 has a through electrode penetrating the roller rotating part 220 , the adhesive film 215 , the assembly substrate 210 , and the assembly substrate 210 . 217a and a roller pad electrode 217b may be included.
- the assembly substrate 210 may include a base portion 210a, a second dielectric layer 210b2, a plurality of assembly electrodes 210c, an assembly pad electrode 210c2, and a barrier rib 210e.
- the second dielectric layer 210b2 is made of an inorganic material such as SiO 2 , SiNx, SiON, Al 2 O 3 , TiO 2 , HfO 2 .
- the second dielectric layer 210b2 may be formed as a single layer or a multi-layer as an organic insulator.
- the second dielectric layer 210b2 may be disposed to cover not only the plurality of assembly electrodes 210c but also the assembly pad electrode 210c2 .
- the assembly substrate 210 may be mounted on the roller rotating unit 220 by an adhesive film 215 .
- the roller pad electrode 217b may include a first pad electrode 217b1 , a second pad electrode 217b2 , and a third pad electrode 217b3 .
- the first pad electrode 217b1 may be formed on the assembly substrate 210 or on the roller rotating part 220, but is not limited thereto.
- the second dielectric layer 210b2 is formed to cover the plurality of assembly electrodes 210c as well as the assembly pad electrode 210c2, it is not necessary to use the O-ring itself, and the overall size of the water tank and the rotating part is reduced. There is a special technical effect of increasing the degree of spatial freedom by reducing it.
- FIG. 13 is an enlarged view of the fourth roller part electrode structure C4 in the intelligent assembly transfer integration apparatus 1002 according to the second embodiment shown in FIG. 11 .
- the fourth roller part electrode structure (C4) may employ the technical characteristics of the third roller part electrode structure (C3), and below, the technical characteristics of the fourth roller part electrode structure (C4) will be mainly described. .
- the fourth roller part electrode structure C4 has a through electrode penetrating the roller rotating part 220 , the adhesive film 215 , the assembly substrate 210 , and the assembly substrate 210 . 217a and a second roller pad electrode 218b may be included.
- the second dielectric layer 210b2 may be formed to cover the assembly pad electrode 210c2 as well as the plurality of assembly electrodes 210c.
- the second roller pad electrode 218b includes a 2-1 th pad electrode 218b1, a 2-2 pad electrode 218b2, and a 2-3 th pad electrode 218b3 disposed on the roller rotating part 220 .
- the second-second pad electrode 218b2 may be a pad electrode penetrating the roller rotating part 220 .
- the second roller pad electrode 218b is not disposed on the side surface of the roller rotating part 220, the possibility of receiving electrical damage from the fluid is prevented, and electrical reliability is remarkably improved. , it is possible to reduce the overall size of the tank and the rotating part, thereby increasing the degree of freedom of space.
- the intelligent assembly, transfer and integration apparatus of the semiconductor light emitting device there is a technical effect of simultaneously improving the transfer speed and the transfer yield in transferring the semiconductor light emitting devices to the display panel.
- the semiconductor light emitting device 150 is assembled on a transfer substrate 210 , and the assembled semiconductor light emitting device 150 is in-line to the panel substrate 110 . Immediate transfer can significantly improve the transfer speed.
- the transfer yield can be significantly increased by selectively transferring the semiconductor light emitting devices 150 assembled on the transfer substrate 210 to the panel substrate 910 only when they are normal after performing real-time inspection. . Accordingly, according to the embodiment, there is a special technical effect that can solve a problem in which a technical contradiction between the transfer speed and the transfer yield occurs by simultaneously increasing the transfer rate and the transfer yield.
- a portion where the assembly substrate 210 and the flat panel substrate 910 on the roller unit 200 meet may be line-transferred in the width direction of the roller unit 200 .
- 100% transfer yield can be realized.
- the embodiment even if there is a defect in the assembly substrate or a defect in the semiconductor light emitting device, it is possible to avoid the transfer, thereby minimizing the dependence on the quality of the semiconductor light emitting device.
- roller unit is configured as a multi, high-speed transfer can be realized.
- the second roller pad electrode is not disposed on the side of the roller rotating part, the fear of receiving electrical damage from the fluid, etc. is prevented, so that the electrical reliability is remarkably improved, and the overall size of the water tank and the rotating part is reduced This has the effect of increasing the degree of spatial freedom.
- the electrode structure of the transfer roller of the semiconductor light emitting device according to the embodiment and the intelligent assembly transfer integration device including the same may be used in the manufacture of a display device.
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Abstract
Description
Claims (10)
- 롤러 회전부;상기 롤러 회전부 상에 장착되는 조립 기판;상기 롤러 회전부와 상기 조립 기판 사이에 배치되는 점착필름;상기 조립 기판을 관통하는 관통 전극; 및상기 롤러 회전부 상에 배치되며 상기 관통 전극과 전기적을 연결되는 롤러 패드전극;을 포함하는 반도체 발광소자의 전사용 롤러부의 전극구조.
- 제1항에 있어서,상기 조립 기판은,베이스부와, 상기 베이스부 상에 배치되는 복수의 조립전극과 조립 패드전극 및 상기 베이스부 상에 유전체층을 포함하며,상기 관통 전극은, 상기 베이스부와 상기 접착필름을 관통하여 상기 조립 패드전극과 전기적으로 연결되는 반도체 발광소자의 전사용 롤러부의 전극구조.
- 제2항에 있어서,상기 롤러 패드전극은,상기 롤러 회전부의 제1 면에 배치되는 제1 패드전극과, 상기 롤러 회전부의 측면에 배치되는 제2 패드전극 및 상기 롤러 회전부의 제2 면에 배치되는 제3 패드전극을 포함하는 반도체 발광소자의 전사용 롤러부의 전극구조.
- 제1항에 있어서,상기 롤러 패드전극은,상기 접착필름 상에 제1 면에 배치되는 제1 패드전극과, 상기 롤러 회전부의 측면에 배치되는 제2 패드전극, 제4 패드전극 및 상기 롤러 회전부의 제2 면에 배치되는 제3 패드전극을 포함하는 반도체 발광소자의 전사용 롤러부의 전극구조.
- 제4항에 있어서,상기 관통 전극은, 상기 베이스부를 관통하여 상기 조립 패드전극과 전기적으로 연결되는 반도체 발광소자의 전사용 롤러부의 전극구조.
- 제1항에 있어서,상기 조립 기판은,베이스부와, 상기 베이스부 상에 배치되는 복수의 조립전극과 조립 패드전극 및 상기 베이스부 상에 유전체층을 포함하며,상기 유전체층은 상기 복수의 조립전극을 덮도록 배치되는 반도체 발광소자의 전사용 롤러부의 전극구조.
- 제6항에 있어서,상기 유전체층은 상기 복수의 조립전극 및 상기 조립 패드전극을 덮도록 배치되는 반도체 발광소자의 전사용 롤러부의 전극구조.
- 제1항에 있어서,상기 롤러 패드전극은,상기 롤러 회전부의 제1 면에 배치되는 제2-1 패드전극, 상기 롤러 회전부의 제2 면에 배치되는 제2-3 패드전극, 및 상기 제2-1 패드전극과 상기 제2-3 패드전극 사이에 배치되는 제2-2 패드전극을 포함하는 반도체 발광소자의 전사용 롤러부의 전극구조.
- 제8항에 있어서,상기 제2-2 패드전극은, 상기 롤러 회전부를 관통하는 반도체 발광소자의 전사용 롤러부의 전극구조.
- 반도체 발광소자들을 수용하는 유체 챔버;상기 반도체 발광소자가 조립되는 조립 기판이 장착되어 회전되는 롤러부; 및상기 조립 기판에 조립된 상기 반도체 발광소자를 검사하는 조립 검사부;를 포함하며,상기 롤러부는,제1항 내지 제9항 중 어느 하나의 반도체 발광소자의 전사용 롤러부의 전극구조를 포함하는 것을 특징으로 하는 지능형 조립전사 통합장치.
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US18/275,548 US20240120218A1 (en) | 2021-02-03 | 2021-02-03 | Electrode structure of roller unit for transferring semiconductor light-emitting element and intelligent integrated assembling and transferring device comprising same |
PCT/KR2021/001407 WO2022168998A1 (ko) | 2021-02-03 | 2021-02-03 | 반도체 발광소자의 전사용 롤러부의 전극구조 및 이를 포함하는 지능형 조립전사 통합장치 |
KR1020237022955A KR20230122053A (ko) | 2021-02-03 | 2021-02-03 | 반도체 발광소자의 전사용 롤러부의 전극구조 및 이를포함하는 지능형 조립전사 통합장치 |
DE112021006742.7T DE112021006742T5 (de) | 2021-02-03 | 2021-02-03 | Elektrodenstruktur einer Rolleneinheit zum Übertragen eines lichtemittierenden Halbleiterelements und intelligente integrierte Montage- und Übertragungsvorrichtung einschließlich derselben |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008516415A (ja) * | 2004-09-03 | 2008-05-15 | イーストマン コダック カンパニー | 熱制御型流体内自動集積法 |
US9418979B2 (en) * | 2012-04-20 | 2016-08-16 | Renssealer Polytechnic Institute | Light emitting diodes and a method of packaging the same |
KR102037226B1 (ko) * | 2016-09-15 | 2019-10-28 | 일룩스 아이엔씨. | 발광 표시 장치의 유체 조립 시스템 및 방법 |
KR20200103973A (ko) * | 2019-02-26 | 2020-09-03 | (주) 에이프로 | 마이크로 엘이디의 자가 조립 장치 |
KR102162739B1 (ko) * | 2018-04-19 | 2020-10-07 | 엘지전자 주식회사 | 반도체 발광소자의 자가조립 장치 및 방법 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9825202B2 (en) | 2014-10-31 | 2017-11-21 | eLux, Inc. | Display with surface mount emissive elements |
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- 2021-02-03 WO PCT/KR2021/001407 patent/WO2022168998A1/ko active Application Filing
- 2021-02-03 DE DE112021006742.7T patent/DE112021006742T5/de active Pending
- 2021-02-03 KR KR1020237022955A patent/KR20230122053A/ko unknown
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008516415A (ja) * | 2004-09-03 | 2008-05-15 | イーストマン コダック カンパニー | 熱制御型流体内自動集積法 |
US9418979B2 (en) * | 2012-04-20 | 2016-08-16 | Renssealer Polytechnic Institute | Light emitting diodes and a method of packaging the same |
KR102037226B1 (ko) * | 2016-09-15 | 2019-10-28 | 일룩스 아이엔씨. | 발광 표시 장치의 유체 조립 시스템 및 방법 |
KR102162739B1 (ko) * | 2018-04-19 | 2020-10-07 | 엘지전자 주식회사 | 반도체 발광소자의 자가조립 장치 및 방법 |
KR20200103973A (ko) * | 2019-02-26 | 2020-09-03 | (주) 에이프로 | 마이크로 엘이디의 자가 조립 장치 |
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DE112021006742T5 (de) | 2023-10-19 |
US20240120218A1 (en) | 2024-04-11 |
KR20230122053A (ko) | 2023-08-22 |
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