WO2013190800A1 - 基板搬送システム - Google Patents
基板搬送システム Download PDFInfo
- Publication number
- WO2013190800A1 WO2013190800A1 PCT/JP2013/003636 JP2013003636W WO2013190800A1 WO 2013190800 A1 WO2013190800 A1 WO 2013190800A1 JP 2013003636 W JP2013003636 W JP 2013003636W WO 2013190800 A1 WO2013190800 A1 WO 2013190800A1
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- WIPO (PCT)
- Prior art keywords
- substrate
- transport
- pair
- transfer
- side walls
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G49/00—Conveying systems characterised by their application for specified purposes not otherwise provided for
- B65G49/05—Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles
- B65G49/07—Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles for semiconductor wafers Not used, see H01L21/677
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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
- H01L21/677—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 conveying, e.g. between different workstations
- H01L21/67763—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 conveying, e.g. between different workstations the wafers being stored in a carrier, involving loading and unloading
- H01L21/67778—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 conveying, e.g. between different workstations the wafers being stored in a carrier, involving loading and unloading involving loading and unloading of wafers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/10—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration comprising two or more co-operating endless surfaces with parallel longitudinal axes, or a multiplicity of parallel elements, e.g. ropes defining an endless surface
- B65G15/12—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration comprising two or more co-operating endless surfaces with parallel longitudinal axes, or a multiplicity of parallel elements, e.g. ropes defining an endless surface with two or more endless belts
- B65G15/14—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration comprising two or more co-operating endless surfaces with parallel longitudinal axes, or a multiplicity of parallel elements, e.g. ropes defining an endless surface with two or more endless belts the load being conveyed between the belts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G19/00—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
- B65G19/02—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors for articles, e.g. for containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G49/00—Conveying systems characterised by their application for specified purposes not otherwise provided for
- B65G49/05—Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles
- B65G49/06—Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles for fragile sheets, e.g. glass
- B65G49/063—Transporting devices for sheet glass
- B65G49/064—Transporting devices for sheet glass in a horizontal position
- B65G49/065—Transporting devices for sheet glass in a horizontal position supported partially or completely on fluid cushions, e.g. a gas cushion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G51/00—Conveying articles through pipes or tubes by fluid flow or pressure; Conveying articles over a flat surface, e.g. the base of a trough, by jets located in the surface
- B65G51/02—Directly conveying the articles, e.g. slips, sheets, stockings, containers or workpieces, by flowing gases
- B65G51/03—Directly conveying the articles, e.g. slips, sheets, stockings, containers or workpieces, by flowing gases over a flat surface or in troughs
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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
- H01L21/673—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 using specially adapted carriers or holders; Fixing the workpieces on such carriers or holders
- H01L21/6732—Vertical carrier comprising wall type elements whereby the substrates are horizontally supported, e.g. comprising sidewalls
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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
- H01L21/677—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 conveying, e.g. between different workstations
- H01L21/67703—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 conveying, e.g. between different workstations between different workstations
- H01L21/67706—Mechanical details, e.g. roller, belt
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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
- H01L21/677—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 conveying, e.g. between different workstations
- H01L21/67763—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 conveying, e.g. between different workstations the wafers being stored in a carrier, involving loading and unloading
- H01L21/67769—Storage means
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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
- H01L21/677—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 conveying, e.g. between different workstations
- H01L21/67784—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 conveying, e.g. between different workstations using air tracks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/02—Articles
- B65G2201/0297—Wafer cassette
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2812/00—Indexing codes relating to the kind or type of conveyors
- B65G2812/02—Belt or chain conveyors
- B65G2812/02128—Belt conveyors
Definitions
- the present invention relates to a substrate transfer system for transferring a substrate, and more particularly, to a substrate transfer system for transferring a substrate out of a storage case.
- This substrate transport device includes transport rollers and a hand unit arranged in two rows.
- the transport rollers in each row are arranged side by side in the substrate transport direction at intervals.
- the hand portion extends in a direction orthogonal to the substrate transport direction and is positioned at a position slightly lower than the transport roller. Further, the hand portion has a plurality of blowout holes for injecting compressed air supplied from an air supply blower or the like on the upper surface thereof.
- the conventional substrate transfer apparatus is configured such that both side edges of the lower surface of the substrate are in contact with the transfer roller, particles are likely to adhere to the surface to be processed of the substrate.
- a substrate transport system is provided with a pair of side walls facing each other and the side walls, and the plurality of substrates are arranged in a horizontal posture at intervals in the vertical direction.
- a substrate supply device including a storage case having a plurality of pairs of support portions for supporting end portions on both sides of the plurality of substrates, and a lowering device for lowering the storage case; and at least the storage case as viewed from the vertical direction It includes one or more air outlets that are scattered or extend in the transport direction of the substrate so as to extend from between a pair of side walls, and blow gas upward, and the one or more air outlets are stored in the housing by the lowering device.
- a floating device configured to float the substrate supported by the support portion by the pressure of the gas blown from the blow-out port when the case is lowered; and a storage case of the substrate supply device as viewed from the vertical direction.
- a transport member that passes between a pair of side walls and extends along one or more air outlets that are scattered or extended in the transport direction of the substrate of the levitation device; and A plurality of claw portions erected at intervals larger than the dimension in the transport direction; and a drive unit that moves the transport member in the transport direction, and the claw portion is levitated by the pressure of the gas blown out from the outlet
- a transfer device configured to push an end of the substrate upstream in the transfer direction in the transfer direction.
- the substrate can be taken out from the storage case and transported without touching the front and back surfaces other than the edge of the substrate. Thereby, it is possible to prevent the particles from adhering to the front surface and the back surface other than the edge of the substrate.
- the substrate transport system according to the invention may include a restricting portion extending in the transport direction, and the restricting portion may be configured to restrict a position in both sides of the substrate transported by the transport device.
- a pair of the restricting portions may be provided to face both sides of one or more air outlets that are scattered or extended in the transfer direction of the transfer device.
- the transfer device includes a pair of endless belts as the transfer members, and the pair of endless belts are orthogonal to the transfer direction when the respective claw portions are viewed from the vertical direction by the drive unit. You may be comprised so that it may rotate synchronously in the state where it was located in a line.
- the meandering of the substrate pushed by the claw portion can be prevented.
- the present invention is configured as described above, and has an effect of preventing adhesion of particles to the front surface and the back surface other than the edge of the substrate.
- FIG. 2 is a block diagram schematically showing a configuration example of a control system of the substrate transfer system of FIG. 1.
- 3 is a flowchart illustrating an operation example of the substrate transfer system in FIG. 1.
- 3 is a flowchart illustrating an operation example of the substrate transfer system in FIG. 1.
- It is a figure which shows the operation example of the board
- It is a figure which shows the operation example of the board
- FIG. 1 is a perspective view illustrating a configuration example of the substrate transfer system 100.
- the substrate transport system 100 is a system for transporting the substrate W.
- substrate conveyance system 100 will not be specifically limited if a board
- substrates include cell substrates for solar cell panels, semiconductor wafers such as silicon wafers, silicon carbide wafers, and sapphire wafers, and glass substrates for thin displays (liquid crystal displays, organic EL displays, etc.) processed by semiconductor processes. Is done.
- substrate conveyance system 100 is a system which conveys a photovoltaic cell board
- downstream side in the transport direction may be referred to as the front, and the upstream side in the transport direction may be referred to as the rear.
- the substrate transfer system 100 includes a substrate supply device 2, a levitating device 3, a transfer device 4, and a control device 5 (controller) that controls operations of the substrate transfer system 100 (see FIG. 4). And a frame that arranges the components of the substrate transfer system 100 in a predetermined positional relationship.
- the predetermined position refers to a position suitable for performing the substrate W transport operation of the substrate transport system 100.
- the substrate supply device 2 includes a movable shelf (storage case) 21 on which the substrate W is placed, and a lifting device (lowering device) 22 that raises and lowers the movable shelf 21.
- the movable shelf 21 has a pair of side walls 23 facing each other and a plurality of pairs of substrate support portions 24 provided on the side walls 23.
- the movable shelf 21 is obtained by removing the rear wall and lower wall of the cartridge 110 described later.
- the pair of side walls 23 facing each other of the movable shelf 21 are arranged side by side in a direction perpendicular to the transport direction when viewed from the vertical direction, and the upper wall 27 connects the upper ends of the pair of side walls 23. ing.
- the interval between the pair of side walls 23 is defined as a predetermined interval necessary for placing the substrate W on the substrate support 24 described later.
- the front and rear surfaces of the movable shelf 21 are opened on the entire surface, and constitute a front opening 25 and a rear opening 26, respectively.
- the substrate W can be loaded (accommodated) and unloaded (removed) through the front opening 25 and the rear opening 26 into the movable shelf 21.
- the substrate W is carried into the movable shelf 21 through the rear opening 26 and is carried out from the movable shelf 21 through the front opening 25.
- the entire bottom surface of the movable shelf 21 is also opened, and a bottom surface opening 28 is formed.
- the levitation device 3 and the transfer device 4 are brought close to the lower surface of the substrate W through the lower surface opening 28.
- the lower surface opening 28 is provided, but the present invention is not limited to this.
- the plurality of pairs of substrate support portions 24 support the end portions on both sides of the plurality of substrates W so that the plurality of substrates W are arranged in a horizontal posture with a space in the vertical direction.
- the plurality of pairs of substrate support portions 24 are respectively provided on the inner surfaces of the pair of side walls 23 as shown in FIGS. 1 and 2.
- a pair of substrate support portions 24 provided on one side wall 23 and a corresponding substrate support portion 24 provided on the other side wall 23 form a pair, and these are provided at a predetermined pitch in the vertical direction.
- the substrate support 24 has an inclined surface 24 a that extends obliquely downward toward the other side wall 23.
- the substrate support portions 24 are arranged with the plurality of substrates W in a horizontal posture and spaced apart in the vertical direction. In this way, the end portions on both sides of the plurality of substrates W are supported. At this time, since the inclined surface 24a and the lower corner portion of the substrate W are in contact with each other, it is possible to prevent the front and back surfaces other than the edge of the substrate W from contacting the substrate support portion 24.
- the elevating device 22 is attached to the frame.
- the lifting device 22 may be anything that raises and lowers the movable shelf 21, and examples thereof include a ball screw mechanism, a fluid cylinder, a winding mechanism using a wire (rope), and the like.
- the lifting device 22 includes a case support portion 31 that supports the movable shelf 21 and a ball screw mechanism 32 that is connected to the case support portion 31 and can be moved up and down.
- the ball screw mechanism 32 includes a ball screw 33 and a slider 34 that is connected to the case support portion 31 and that moves up and down as the ball screw 33 rotates.
- a transfer unit 105 is provided on the upstream side of the movable shelf 21 in the transport direction.
- FIG. 2 is a perspective view illustrating a configuration example of the transfer unit 105 of the substrate transport system 100.
- FIG. 2 is a perspective view illustrating a configuration example of the transfer unit 105 of the substrate transport system 100.
- the transfer unit 105 includes a mounting table 111 on which the cartridge 110 storing the substrate is mounted, and a transfer unit that transfers the substrate stored in the cartridge 110 to the movable shelf 21.
- a loading device 112 is included.
- the movable shelf 21 is obtained by removing the rear wall 121 and the lower wall of the cartridge 110. That is, the cartridge 110 has a front opening 124 and a substrate support portion 123 like the movable shelf 21. The substrate W is carried into and out of the cartridge 110 through the front opening 124.
- the rear wall 121 of the cartridge 110 has a rear surface opening 125 that is opened so that the end of the upstream side in the transport direction of all the substrates W placed on the substrate support portion 126 is exposed.
- the mounting table 111 is attached to the frame. And the mounting base 111 is located in the conveyance direction upstream of the board
- the height of the mounting table 111 is such that the rear end of each substrate support 24 of the movable shelf 21 and the front end of each substrate support 126 of the cartridge 110 placed at the replacement position in a state where the cartridge 110 is mounted thereon. And are positioned so as to face each other.
- the transfer device 112 is disposed upstream of the mounting table 111 in the transport direction.
- the transfer device 112 is attached to a frame and has a base 130 having a rail 131 extending in the transport direction, a movable base 132 that is guided by the rail 131 and configured to be movable upstream and downstream in the transport direction, A pushing arm 133 extending horizontally from the movable base 132 to the downstream side in the conveying direction, a pushing plate 134 provided at the tip of the pushing arm 133, and a drive unit for moving the movable base 132 upstream and downstream in the conveying direction (see FIG. (Not shown).
- all the substrates housed in the cartridge 110 are inserted into the cartridge 110 through the rear opening 125 of the cartridge 110 when the movable base 132 moves downstream in the transport direction.
- the end of W is pressed downstream in the transport direction. Since the front ends of the substrate support portions 126 of the cartridge 110 and the rear ends of the plurality of pairs of substrate support portions 24 of the movable shelf 21 face each other, the pressed substrate slides on the substrate support portion 126 of the cartridge 110, It is placed on the inclined surface 24 a of the movable shelf 21.
- FIG. 3 is a diagram illustrating an example of the substrate floating structure of the substrate transfer system 100, and is a view of the substrate transfer system 100 as viewed from the rear.
- the levitation device 3 has one or more outlets 35.
- the levitation device 3 includes a device main body 36 and a drive unit (not shown) (for example, a pressure pump), and the air outlet 35 is formed in the device main body 36.
- a drive unit for example, a pressure pump
- the apparatus main body 36 is a hollow box extending horizontally in the transport direction of the substrate W.
- the upstream end of the apparatus main body 36 is located in the lower surface opening 28 of the movable shelf 21 when viewed from the vertical direction. Therefore, the apparatus main body 36 extends in the transport direction of the substrate W so as to extend from between the pair of side walls 23 of the movable shelf 21 when viewed from the vertical direction.
- the apparatus main body 36 is attached to the frame.
- the apparatus main body 36 has a width, that is, a dimension in a direction perpendicular to the conveyance direction as viewed from the vertical direction, perpendicular to the conveyance direction of the lower surface opening 28 of the movable shelf 21. It is formed smaller than. As a result, the levitation device 3 can be positioned between the pair of side walls 23 of the movable shelf 21 (see FIGS. 7 to 9).
- the one or more outlets 35 are scattered or extended in the transport direction of the substrate W so as to extend at least from between the pair of side walls 23 of the movable shelf 21 when viewed from the vertical direction, and blow out the gas upward.
- a large number of air outlets 35 are scattered on the entire upper surface of the apparatus main body 36.
- the drive unit of the levitation device 3 supplies air (gas) to the device main body 36 by the drive.
- air blows upward (including directly above and obliquely upward) from the air outlet 35.
- substrate support part 24 of the movable shelf 21 can be floated with the pressure of the gas which blows off from the blower outlet 35.
- FIG. The floating means that the front and back surfaces of the substrate W facing the floating device 3 are not touched.
- the initial position of the movable shelf 21 is, for example, a position where the substrate W supported by the lowermost substrate support portion 24 among the substrate support portions 24 of the movable shelf 21 floats due to the pressure of the gas blown out from the outlet 35. (See FIGS. 3 and 8). Further, the end position of the movable shelf 21 is, for example, a position where the substrate W supported by the uppermost substrate support portion 24 among the substrate support portions 24 of the movable shelf 21 floats due to the pressure of the gas blown out from the air outlet 35. (See FIG. 9).
- the conveying device 4 includes a conveying conveyor (conveying member) 40, a claw portion 41 standing on the conveying conveyor 40, and a driving unit 42 that moves the conveying conveyor 40 in the conveying direction.
- the transfer conveyor 40 extends between the pair of side walls 23 of the movable shelf 21 of the substrate supply device 2 and along the air outlet 35 of the levitation device 3 when viewed from the vertical direction.
- the upper surface of the transport conveyor 40 constitutes a transport path for the substrate.
- the conveyor 40 is located between the pair of side walls 23 of the movable shelf 21 at the end on the upstream side in the conveyance direction when viewed from the vertical direction.
- the delivery position P is set to the conveyance conveyor 40 in the edge part of the conveyance direction downstream.
- the delivery position P is a position where the transfer device 150 (see FIG. 4) carries out the substrate W, and the transfer device 150 transfers the substrate W carried out from the delivery position P to another position.
- a delta robot equipped with a well-known Bernoulli-type suction hand is exemplified as the transfer device.
- the transport conveyor 40 includes a pair of endless belts 46.
- the pair of endless belts 46 are stretched around a pair of sprockets 45.
- the levitation device 3 is disposed in a region surrounded by the pair of endless belts 46 and the pair of sprockets 45 as viewed from the vertical direction.
- the drive unit 42 rotationally drives one of the sprockets 45 by the driving force, and thereby the pair of endless belts 46 are synchronously driven to rotate. In this way, the drive unit 42 moves the transport conveyor 40 in the transport direction.
- the claw portions 41 are erected on the transport conveyor 40 at intervals larger than the dimension in the transport direction of the substrate W.
- the length of the claw portion 41 is defined so that the tip of the claw portion 41 is positioned at a higher height than the substrate on which the tip of the claw portion 41 floats.
- the claw portion 41 is configured to push the upstream end of the substrate floating in the transport direction by the pressure of the gas blown out from the air outlet 35.
- a plurality of claw portions 41 are opposed to each other on the surfaces of the pair of endless belts 46.
- a pair of claw portions 41 provided on one endless belt 46 and a claw portion 41 provided on the other endless belt 46 form a pair, and the pair of claw portions 41 are orthogonal to the conveying direction when viewed from the vertical direction. They are arranged in the direction. Therefore, when the pair of endless belts 46 are rotationally driven by the driving force of the driving unit 42, the pair of claw portions are rotationally driven synchronously in a state where they are aligned in a direction orthogonal to the conveying direction.
- the claw portions 41 are erected at a pitch slightly larger than the dimension of the substrate W in the transport direction.
- the claw portion 41 is formed in a rectangular parallelepiped shape and is formed to protrude outward from the endless belt 46.
- a substrate holding region 47 for holding the substrate W is formed between the pair of claw portions 41 and the adjacent claw portion 41.
- the transport conveyor 40 configured as described above, when the substrate W is positioned in the substrate holding region 47 in a state where the gas is blown out from the blowout port 35, the substrate floats due to the pressure of the blown out gas. In this state, the position of the substrate W in the transport direction is regulated by the pair of claw portions 41 adjacent to the upstream and downstream ends of the substrate W in the transport direction. Then, when the pair of endless belts 46 are rotationally driven, the substrate W is pushed to the downstream side in the transport direction by the pair of claw portions 41 on the upstream side in the transport direction and transported to the delivery position P. In this way, the substrate W is pushed by the pair of claw portions 41 and is transported, so that it is difficult to meander during transport.
- the substrate transport system 100 further includes a pair of guides (regulators) 50 extending in the transport direction.
- the guide 50 is a strip-shaped plate attached to the frame.
- the pair of guides 50 are disposed on both sides of the transport conveyor 40, that is, on both sides of the levitation device 3 in a posture facing each other.
- the pair of guides 50 are provided adjacent to the downstream side in the transport direction of the substrate supply apparatus 2, and the interval is set to be slightly larger than the width in the direction orthogonal to the transport direction of the substrate W. .
- the positions of the substrates W on which the pair of guides 50 are transported are regulated in the both-side directions (the direction perpendicular to the transport direction when viewed from the vertical direction).
- FIG. 4 is a block diagram schematically showing a configuration example of the control system of the substrate transport system 100. As shown in FIG. Hereinafter, the control system of the substrate transfer system 100 will be described with reference to FIG.
- the control device 5 provided in the substrate transfer system 100 includes, for example, a control unit 55 having a computing unit such as a CPU and a storage unit 56 having a memory such as a ROM and a RAM.
- the control unit 55 may be configured by a single controller that performs centralized control, or may be configured by a plurality of controllers that perform distributed control in cooperation with each other.
- the control unit 55 controls the operation of each driving device in the elevating device 22, the levitating device 3, the conveying device 4, and the transfer device 112, and thereby controls the operation of each device.
- a predetermined control program is stored in the storage unit 56, and the operation of the substrate transport system 100 is controlled by the control unit 55 reading and executing these control programs.
- the substrate transfer completion signal output from the transfer device 150 is input to the control unit 55.
- the arrow in a figure shows the transmission direction of a signal.
- control device 5 controlling the driving devices of the lifting device 22, the floating device 3, the transport device 4, and the transfer device 112.
- FIG. 5 is a flowchart showing an operation example of the substrate transfer system 100.
- FIG. 6 is a flowchart showing an operation example of the transfer process of the substrate transfer system 100.
- 7 to 9 are diagrams showing an operation example of the substrate transfer system 100.
- FIG. 5 is a flowchart showing an operation example of the substrate transfer system 100.
- FIG. 6 is a flowchart showing an operation example of the transfer process of the substrate transfer system 100.
- 7 to 9 are diagrams showing an operation example of the substrate transfer system 100.
- control unit 55 performs a transfer process for transferring a substrate from the cartridge 110 to the movable shelf 21 (step S1).
- the transfer process is performed as follows.
- control unit 55 positions the movable shelf 21 at the replacement position shown in FIG. 7 (step S11).
- step S12 the controller 55 pushes the pushing plate 134 of the transfer device 112 into the cartridge 110 from the rear opening 125 (step S12). As a result, all the substrates W are transferred from the cartridge 110 to the movable shelf 21.
- step S13 the controller 55 lowers the movable shelf 21 and positions it at the initial position shown in FIG. 8 (step S13). This completes the transfer process.
- the control unit 55 drives the levitation device 3 to blow air upward from the air outlet 35 (step S2). Accordingly, the substrate W supported by the lowermost substrate support portion 24 among the substrate support portions 24 of the movable shelf 21 is floated by the pressure of the gas blown out from the air outlet 35. At this time, the position of the substrate W in the transport direction is regulated by the claw portion 41 and the position in the direction orthogonal to the transport direction is regulated by the pair of side walls 23, so that the substrate W is held in the substrate holding region 47.
- the control unit 55 transfers the substrate holding region 47 adjacent to the upstream side in the transfer direction of the substrate holding region 47 holding the substrate W so that the substrate holding region 47 is positioned below the substrate W stored in the movable shelf 21.
- the conveyor 40 is rotated. That is, the pair of endless belts 46 is driven to rotate by one pitch (step S3).
- the substrate W located in the substrate holding region 47 is transported downstream in the transport direction.
- the position of the substrate W in the transport direction is regulated by the claw portion 41 and the position in the direction orthogonal to the transport direction is regulated by the pair of guides 50, so that the substrate W is held in the substrate holding region 47.
- control unit 55 determines whether the movable shelf 21 is located at the end position shown in FIG.
- control unit 55 determines that the movable shelf 21 is not located at the end position (NO in step S4), the control unit 55 lowers the movable shelf 21 by one pitch (step S5). As a result, the substrate W adjacent above the previous substrate W is floated by the pressure of the gas blown out from the blowout port 35.
- step S6 when it is determined that the movable shelf 21 is located at the end position (YES in step S4), the control unit 55 performs the transfer process (step S6).
- control unit 55 stands by until a substrate transfer completion signal is notified from the transfer device 150 and it is determined that the substrate is not located at the delivery position P (step S7). That is, while the transfer of the substrate W positioned at the delivery position is not completed, the control unit 55 waits until the substrate W is unloaded.
- control part 55 determines with the board
- the substrate transport system 100 can take out the substrate W from the movable shelf 21, transport it, and position it at the delivery position P without touching the front and back surfaces other than the edge of the substrate W. it can. Thereby, adhesion of particles to the front surface and the back surface other than the edge of the substrate W can be prevented.
- the transfer device 112 is configured to transfer the substrate W accommodated in the cartridge 110 to the movable shelf 21, but is not limited thereto. Alternatively, the operator may insert it manually. Further, the movable shelf 21 in which the substrates W are stored and the movable shelf 21 in which the substrates W are carried out may be exchanged.
- a pair of guides 50 are provided on both sides of the transport device 4, but the present invention is not limited to this.
- the guide 50 may be provided on one side of the transport device 4.
- the levitation device 3 may be inclined toward the guide 50. If comprised in this way, the board
- the gas blown out from the air outlet 35 is not limited to air, and any gas can be used.
- the substrate transfer system of the present invention is useful for application to production lines for cell substrates for solar cell panels, semiconductors for forming fine circuits on substrates, display panels, and the like.
Abstract
Description
<基板搬送システムの全体構成>
図1は、基板搬送システム100の構成例を示す斜視図である。
基板供給装置2は、基板Wが載置される可動棚(収納ケース)21と、可動棚21を上昇及び下降させる昇降装置(下降装置)22とを備える。
なお、本実施の形態においては可動棚21の搬送方向上流側に、移載部105が備えられている。
図3は、基板搬送システム100の基板浮上構造の一例を示す図であり、基板搬送システム100を後方から見た図である。
搬送装置4は、搬送コンベア(搬送部材)40と、搬送コンベア40に立設された爪部41と、搬送コンベア40を搬送方向に移動させる駆動部42とを有する。
また、本実施の形態において、基板搬送システム100は、更に搬送方向に延びる一対のガイド(規制部)50を備えている。ガイド50は、枠体に取り付けられている短冊状の板体である。一対のガイド50は、互いに対向した姿勢で搬送コンベア40の両側、即ち浮上装置3の両側に配設されている。また、一対のガイド50は、基板供給装置2の搬送方向下流側に隣接して設けられ、その間隔は、基板Wの搬送方向と直交する方向の幅よりも若干大きくなるように設定されている。これによって、一対のガイド50が搬送される基板Wの両側方向(鉛直方向から見て搬送方向と直交する方向)の位置を規制している。このように、搬送コンベア40上の基板の水平方向の位置は、爪部41とガイド50とによって規制されているので、基板保持領域47上から外れることなく、受渡位置Pに搬送される。
図4は、基板搬送システム100の制御系統の構成例を概略的に示すブロック図である。以下、図4を参照しながら、基板搬送システム100の制御系統について説明する。
次に、基板搬送システム100の動作例を説明する。これらの動作は、制御装置5が昇降装置22,浮上装置3,搬送装置4及び移載装置112の各駆動装置を制御することによって遂行される。
<変形例>
上記実施の形態においては、移載装置112がカートリッジ110に収納されている基板Wを可動棚21に移載する構成としたがこれに限られるものではない。これに代えて、作業者が手で差し込んでもよい。また、基板Wが収納されている可動棚21と基板Wが搬出された可動棚21とを交換してもよい。
3 浮上装置
4 搬送装置
5 制御装置
21 可動棚
22 昇降装置
23 側壁
24 基板支持部
24a 傾斜面
25 前面開口
26 後面開口
27 上壁
28 下面開口
31 ケース支持部
32 ボールねじ機構
33 ボールねじ
34 スライダ
35 吹出口
36 装置本体
40 搬送コンベア
41 爪部
42 駆動部
45 スプロケット
46 無端ベルト
47 基板保持領域
50 ガイド
55 制御部
56 記憶部
100 基板搬送システム
105 移載部
110 カートリッジ
111 載置台
112 移載装置
121 後壁
123 基板支持部
124 前面開口
125 後面開口
126 基板支持部
130 基台
131 レール
132 可動基部
133 押込アーム
134 押込板
150 移送装置
Claims (4)
- 互いに対向する一対の側壁と、該側壁に設けられ、複数の基板が水平姿勢で且つ上下方向に間隔をあけて並ぶように該複数の基板の両側の端部を支持する複数対の支持部とを有する収納ケースと、前記収納ケースを下降させる下降装置と、を含む基板供給装置と、
鉛直方向から見て少なくとも前記収納ケースの一対の側壁の間から延出するように前記基板の搬送方向に点在又は延在し、気体を上方に吹き出す1以上の吹出口を含み、該1以上の吹出口は前記下降装置により前記収納ケースを下降させると前記吹出口から吹き出る気体の圧力によって前記支持部に支持されている基板が浮上するように構成されている浮上装置と、
鉛直方向から見て、前記基板供給装置の収納ケースの一対の側壁の間を通過し且つ前記浮上装置の前記基板の搬送方向に点在又は延在する1以上の吹出口に沿うように延在する搬送部材と、該搬送部材に前記基板の前記搬送方向の寸法よりも大きい間隔で立設された複数の爪部と、前記搬送部材を前記搬送方向に移動させる駆動部とを含み、前記爪部が前記吹出口から吹き出る気体の圧力によって浮上している基板の搬送方向上流側の端部を搬送方向に押すよう構成されている搬送装置と、を備える基板搬送システム。 - 前記搬送方向に延びる規制部を備え、前記搬送装置によって搬送される基板の両側方向の位置を前記規制部が規制するよう構成されている、請求項1に記載の基板搬送システム。
- 前記規制部は、前記搬送装置の前記搬送方向に点在又は延在する1以上の吹出口の両側に対向して一対設けられている、請求項2に記載の基板搬送システム。
- 前記搬送装置は前記搬送部材としての無端ベルトを一対備え、該一対の無端ベルトは、それぞれの爪部が駆動部により鉛直方向から見て前記搬送方向と直交する方向に並んだ状態で同期して回転するよう構成されている、請求項1乃至3の何れかに記載の基板搬送システム。
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US14/410,532 US9773691B2 (en) | 2012-06-21 | 2013-06-10 | Substrate conveying system |
EP13806319.3A EP2866252B1 (en) | 2012-06-21 | 2013-06-10 | Substrate conveying system |
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