WO2011132332A1 - 偏光フィルムの貼合装置およびこれを備える液晶表示装置の製造システム - Google Patents

偏光フィルムの貼合装置およびこれを備える液晶表示装置の製造システム Download PDF

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Publication number
WO2011132332A1
WO2011132332A1 PCT/JP2010/063579 JP2010063579W WO2011132332A1 WO 2011132332 A1 WO2011132332 A1 WO 2011132332A1 JP 2010063579 W JP2010063579 W JP 2010063579W WO 2011132332 A1 WO2011132332 A1 WO 2011132332A1
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WO
WIPO (PCT)
Prior art keywords
substrate
polarizing film
film
bonding
transport mechanism
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PCT/JP2010/063579
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English (en)
French (fr)
Japanese (ja)
Inventor
力也 松本
幸治 植田
和範 岸▲崎▼
Original Assignee
住友化学株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 住友化学株式会社 filed Critical 住友化学株式会社
Priority to CN201080006598.5A priority Critical patent/CN102395918B/zh
Priority to KR1020117018258A priority patent/KR20120131087A/ko
Priority to KR1020117018215A priority patent/KR101108405B1/ko
Publication of WO2011132332A1 publication Critical patent/WO2011132332A1/ja

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers

Definitions

  • the present invention relates to a polarizing film laminating apparatus and a liquid crystal display manufacturing system including the same.
  • liquid crystal display devices have been widely manufactured.
  • a polarizing film is bonded to a substrate (liquid crystal panel) used in a liquid crystal display device in order to control transmission or blocking of light.
  • the polarizing film is bonded so that the absorption axes thereof are orthogonal.
  • Patent Document 1 discloses an optical display device manufacturing system.
  • the said manufacturing system rotates a board
  • optical film polarizing film
  • Patent No. 4307510 (issued on Aug. 5, 2009)
  • the conventional apparatus has the following problems.
  • the work is usually performed in a clean room in order to prevent foreign matters such as dust from entering the bonding surface.
  • air is rectified. This is because it is necessary to bond the polarizing film in a state in which rectification is performed on the substrate in a downflow in order to suppress the yield reduction due to the foreign matter.
  • the manufacturing system of Patent Document 1 has a configuration in which a polarizing film is bonded to the substrate from the upper surface and the lower surface.
  • a demerit that the airflow (downflow) is hindered by the polarizing film and the rectification environment to the substrate is deteriorated.
  • FIGS. 14 (a) and 14 (b) show air velocity vectors in the top-paste type manufacturing system. In FIG.
  • a region A is a region where an unwinding unit and the like for unwinding the polarizing film are installed, a region B is a region through which the polarizing film mainly passes, and a region C is a peeling removed from the polarizing film. This is an area in which a take-up unit or the like for winding the film is installed.
  • clean air is supplied from a HEPA (High Efficiency Particulate Air) filter 40.
  • HEPA High Efficiency Particulate Air
  • FIG. 14A since the grating 41 through which clean air can pass is installed, the airflow can move in the vertical direction via the grating 41.
  • FIG. 14B since the grating 41 is not installed, the airflow moves along the floor after contacting the floor at the bottom of FIG. 14B.
  • the areas A to C are arranged on the 2F (second floor) portion, and the clean air from the HEPA filter 40 is blocked by the polarizing film. Therefore, it is difficult to generate an airflow in the vertical direction with respect to the substrate passing through the 2F portion.
  • the airflow vector in the horizontal direction is large (vector density is high). That is, it can be said that the rectification environment has deteriorated.
  • the objective is to provide the manufacturing system of a polarizing film bonding apparatus and a liquid crystal display device provided with the same which do not disturb a rectification environment. is there.
  • the polarizing film laminating apparatus of the present invention transports a rectangular substrate with a long side or a short side along the transport direction, and the first substrate.
  • a first bonding unit that bonds a polarizing film to the lower surface of the substrate in the transport mechanism;
  • a reversing mechanism that reverses the substrate transported by the first substrate transport mechanism and places the substrate in the second substrate transport mechanism;
  • a second substrate transport mechanism for transporting the substrate in a state where the short side or the long side is along the transport direction, and a second bonding unit for bonding a polarizing film to the lower surface of the substrate in the second substrate transport mechanism;
  • the first substrate transport mechanism and the second substrate transport mechanism transport the substrate in the same direction, and the long side or the transported by the first substrate transport mechanism.
  • a substrate with a short side along the transport direction A reversing mechanism for reversing a short side or a long side to a state along the substrate transport direction of the second substrate transport mechanism, wherein the reversing mechanism includes a substrate support portion and a substrate reversing portion connected to the substrate support portion.
  • the substrate support unit can place the substrate transported by the first substrate transport mechanism, and can sandwich the placed substrate.
  • the substrate reversing unit rotates about the reversing axis.
  • the first substrate transport mechanism includes a straight line that passes through the center of the substrate before reversal in the first substrate transport mechanism and has a 45 ° inclination with respect to a straight line that is perpendicular to the transport direction of the substrate.
  • the reversal axis is located in a plane including the substrate before reversal in the substrate transport mechanism, and a pair of the substrate support portions are provided in line symmetry with respect to the reversal axis.
  • a polarizing film can be bonded to the lower surface of a board
  • the operation of the reversing mechanism is a simple operation centered on the reversing axis, the tact time is short.
  • the bonding apparatus according to the present invention is very simple to install and is excellent in area efficiency.
  • the reversing mechanism includes a substrate support portion and a substrate reversing portion connected to the substrate support portion, and the substrate support portion is a first support.
  • the substrate transported by the substrate transport mechanism can be placed, and the placed substrate can be sandwiched.
  • the substrate reversing unit is configured to invert the substrate by rotating about the reversal axis.
  • the reversing axis is located, and a pair of the substrate support portions are provided symmetrically with respect to the reversing axis.
  • the polarizing film is bonded to the lower surface of the substrate by the first bonding portion, and the substrate is rotated by rotation along the reversing axis of the substrate reversing portion in the reversing mechanism. While reversing, the long side and short side with respect to the conveyance direction can be changed. Then, a polarizing film can be bonded to the lower surface of a board
  • the tact time is short. Therefore, it is possible to realize bonding with a short tact time including a reversing operation.
  • the first substrate transport mechanism and the second substrate transport mechanism transport the substrate in the same direction. That is, it does not have a complicated structure such as an L shape. Therefore, the bonding apparatus according to the present invention is very simple to install and has an effect of being excellent in area efficiency.
  • the manufacturing system includes a bonding apparatus according to the present invention.
  • FIG. 1 is a cross-sectional view showing a manufacturing system.
  • the manufacturing system 100 has a two-stage structure, the 1F (first floor) portion is a film transport mechanism 50, and the 2F (second floor) portion is a substrate transport mechanism (first substrate transport mechanism and It becomes the bonding apparatus 60 containing a 2nd board
  • the film transport mechanism 50 plays the role of unwinding the polarizing film (polarizing plate) and transporting it to the nip rolls 6 ⁇ 6a and 16 ⁇ 16a and winding up the peeling film that is no longer needed.
  • the bonding device 60 plays a role of bonding the polarizing film unwound by the film transport mechanism 50 to the substrate (liquid crystal panel) 5.
  • the film transport mechanism 50 includes a first film transport mechanism 51 and a second film transport mechanism 52.
  • the 1st film conveyance mechanism 51 conveys a polarizing film to the nip roll 6 * 6a which bonds a polarizing film to the lower surface of the board
  • the substrate 5 has a rectangular shape.
  • the second film transport mechanism 52 transports the polarizing film to the bottom surface of the inverted substrate 5.
  • the first film transport mechanism 51 includes a first unwinding unit 1, a second unwinding unit 1a, a first winding unit 2, a second winding unit 2a, a half cutter 3, a knife edge 4, and a defect film winding roller. 7 ⁇ 7a.
  • the first unwinding unit 1 is provided with a polarizing film original, and the polarizing film is unwound.
  • a known polarizing film may be used as the polarizing film. Specifically, a polyvinyl alcohol film is dyed with iodine or the like, and a film stretched in a uniaxial direction can be used. Although it does not specifically limit as thickness of the said polarizing film, A polarizing film 5 micrometers or more and 400 micrometers or less can be used preferably.
  • the polarizing film has a pressure-sensitive adhesive layer protected by a release film.
  • a release film also referred to as a protective film or a separator
  • a polyester film, a polyethylene terephthalate film, or the like can be used.
  • the peeling film of 5 micrometers or more and 100 micrometers or less can be used preferably.
  • the manufacturing system 100 includes two unwinding portions and two unwinding portions corresponding to the unwinding portions, the first unwinding portion 1 has a low remaining amount of raw material. It is possible to connect the original fabric provided in the two unwinding portions 1 a to the original fabric of the first unwinding portion 1. As a result, it is possible to continue the operation without stopping the unwinding of the polarizing film. With this configuration, production efficiency can be increased.
  • a plurality of unwinding sections and winding sections may be provided, and three or more winding sections may be provided.
  • the 1st unwinding part 1 and the 2nd unwinding part 1a shown in FIG. 1 have a structure which can replace a mutual position with a turret.
  • the first unwinding portion 1 and the second unwinding portion 1a move while drawing a circular trajectory, automatically cut the polarizing film of the first unwinding portion 1, and then the second winding.
  • the polarizing film of the protruding portion 1a can be automatically connected.
  • the first unwinding part 11 and the second unwinding part 11a are also configured to rotate by a turret. According to the structure of the turret, the unwinding portions or the winding portions can be easily replaced with each other, and it is excellent in that the polarizing films can be easily connected.
  • the structure shown in FIG. 2 is mentioned as a modification of an unwinding part and a winding part.
  • the 1st unwinding part 1b and the 2nd unwinding part 1c of FIG. 2 have a structure which can move along a horizontal with respect to the direction of the core 1d of a polarizing film.
  • the 1st unwinding part 1b and the 2nd unwinding part 1c have a structure which can move to the width direction of a polarizing film.
  • the structure is movable in at least one of both directions along the core 1d (the back side direction in the drawing (marked with a cross in the circle) and the front side of the drawing. It can move in at least one of the lateral directions (marked with a circle in the circle).
  • the 1st unwinding part 1b and the 2nd unwinding part 1c are arranged mutually in parallel.
  • the bonding device 60 is provided on the upper part of the first unwinding portion 1b and the second unwinding portion 1c.
  • the first unwinding portion 1b and the second unwinding portion are provided. Since the portion 1c is structured to move horizontally in the direction of the core 1d, it is not necessary to secure a space for the unwinding portion to move upward. Therefore, the space between the conveyor roll 15 provided at the upper portion and the unwinding portion can be saved. As a result, it is possible to provide a downsized bonding apparatus, and thus a manufacturing system.
  • the present invention is greatly different from a conventional manufacturing system having a turret in that such downsizing can be achieved.
  • a manufacturing system having a turret is disclosed, for example, in Japanese Patent Laid-Open No. Hei 8-208083.
  • the roll remaining amount of the polarizing film provided in the 1st unwinding part 1b decreases, it connects with the polarizing film of the 2nd unwinding part 1c by an operator.
  • the conveyance speed of the polarizing film is 0 m / min.
  • the operator cuts the polarizing film on the first unwinding portion 1b side.
  • polarizing films are connected using a single-sided adhesive tape, for example.
  • the first winding unit 2 the second winding unit 2a, the first winding unit 12 and the second winding unit 12a in FIG. 1, as in the unwinding unit in FIG. It can be set as the structure which can move horizontally with respect to this direction.
  • the point that the 1st unwinding part 2 and the 2nd unwinding part 2a are arranged in parallel is also the same.
  • the structure of the winding unit (the first winding unit and the second winding unit can move horizontally with respect to the direction of the core of the release film, and the first winding unit and the second winding unit).
  • Half cutter (cutting unit) 3 half-cuts a polarizing film (a film laminate composed of a polarizing film, a pressure-sensitive adhesive layer and a peeling film) protected by a peeling film, and cuts the polarizing film and the pressure-sensitive adhesive layer.
  • a polarizing film a film laminate composed of a polarizing film, a pressure-sensitive adhesive layer and a peeling film
  • the half cutter 3 a known member may be used. Specifically, a cutter, a laser cutter, etc. can be mentioned. After the polarizing film and the pressure-sensitive adhesive layer are cut by the half cutter 3, the release film is removed from the polarizing film by the knife edge (removal part) 4.
  • the pressure-sensitive adhesive layer is not particularly limited, and examples thereof include acrylic, epoxy, and polyurethane pressure-sensitive adhesive layers.
  • the thickness of the pressure-sensitive adhesive layer is not particularly limited, but is usually 5 to 40 ⁇ m.
  • the 2nd film conveyance mechanism 52 is the structure similar to the 1st film conveyance mechanism 51, and is the 1st unwinding part 11, the 2nd unwinding part 11a, the 1st winding part 12, and the 2nd winding part 12a. , Half cutter 13, knife edge 14 and defect film winding rollers 17 and 17 a. About the member which attached
  • the manufacturing system 100 includes a cleaning unit 71.
  • the cleaning unit 71 cleans the substrate 5 before the polarizing film is bonded to the lower surface of the substrate 5 by the nip rolls 6 and 6a.
  • a known cleaning unit composed of a nozzle and a brush for injecting a cleaning liquid may be used. By cleaning the substrate 5 immediately before the bonding by the cleaning unit 71, the bonding can be performed in a state where there are few adhered foreign substances on the substrate 5.
  • FIG. 3 is a cross-sectional view showing a peripheral portion of the nip rolls 6 and 6a in the manufacturing system 100.
  • FIG. FIG. 3 shows a situation in which the substrate 5 is transported from the left direction and the polarizing film 10a having an adhesive layer (not shown, the same hereinafter) is transported from the lower left direction.
  • the polarizing film 10a is provided with a release film 10b, and the polarizing film 10a and the pressure-sensitive adhesive layer are cut by the half cutter 3, and the release film 10b is not cut (half cut).
  • the knife edge 4 is installed on the peeling film 10b side.
  • the knife edge 4 is an edge-shaped member for peeling the peeling film 10 b, and the polarizing film 10 a and the peeling film 10 b having a low adhesive force are peeled off along the knife edge 4.
  • the release film 10b is wound around the first winding portion 2 of FIG.
  • it can replace with a knife edge and can also use the structure which winds up a peeling film using an adhesion roller.
  • the winding efficiency of a peeling film can be improved by providing an adhesive roller in two places similarly to a winding part.
  • the bonding apparatus 60 conveys the board
  • the bonding apparatus 60 is provided on the upper part of the film transport mechanism 50. Thereby, space saving of the manufacturing system 100 can be achieved.
  • a substrate transport mechanism including a conveyor roll is installed in the laminating apparatus 60, whereby the substrate 5 is transported in the transport direction (first substrate transport mechanism 61 and second described later in FIG. 10).
  • the substrate transport mechanism 62 corresponds to the substrate transport mechanism).
  • the substrate 5 is transported from the left side, and then transported from the right side in the drawing, that is, from the top of the first film transport mechanism 51 to the top of the second film transport mechanism 52.
  • the nip rolls 6 * 6a (1st bonding part) and the nip rolls 16 * 16a (2nd bonding part) which are bonding parts are each provided.
  • the nip rolls 6, 6 a and 16, 16 a are members that serve to bond the polarizing film from which the release film has been removed to the lower surface of the substrate 5.
  • the substrate 5 is reversed by the reversing mechanism 65 after being bonded by the nip rolls 6 and 6a.
  • the reversing mechanism 65 will be described later.
  • the polarizing film conveyed to the nip rolls 6 and 6a is bonded to the lower surface of the substrate 5 through an adhesive layer.
  • known configurations such as a pressure roll and a pressure roll can be employed.
  • what is necessary is just to adjust the pressure and temperature at the time of bonding in the nip rolls 6 and 6a suitably.
  • the configuration of the nip rolls 16 and 16a is the same.
  • a defect display (mark) detection unit is provided between the first unwinding units 1 and 11 and the half cutter, and a polarizing film having a defect is detected. It becomes the composition which is done.
  • the said defect display is provided at the time of the 1st unwinding part 1 and / or the 1st unwinding part 11 side rather than a defect display detection part by detecting at the time of the original production of a polarizing film, and providing a defect display. It attaches
  • the defect display imparting unit includes a camera, an image processing device, and a defect display forming unit. First, a polarizing film is imaged by the camera, and the presence or absence of a defect can be inspected by processing the imaging information. Specific examples of the drawback include foreign matters such as dust and fish eyes. When a defect is detected, a defect display is formed on the polarizing film by the defect display forming unit. A mark such as ink is used as the defect display.
  • a bonding avoiding unit discriminates the mark with a camera and transmits a stop signal to the bonding apparatus 60 to stop the conveyance of the substrate 5. Thereafter, the polarizing film in which the defect is detected is not used for pasting by the nip rolls 6 and 6a, and is wound by the defect film winding roller (collecting unit) 7 and 7a. Thereby, pasting with substrate 5 and a polarizing film which has a fault can be avoided. If such a series of structures is provided, it is possible to avoid the bonding between the polarizing film having a defect and the substrate 5, so that the yield can be increased, which is preferable.
  • a publicly known inspection sensor can be used suitably as a fault detection part and a pasting avoidance part.
  • the substrate 5 is conveyed to the nip rolls 16 and 16a. Then, a polarizing film is bonded to the lower surface of the substrate 5. As a result, the polarizing film is bonded to both surfaces of the substrate 5, and the two polarizing films are bonded to both surfaces of the substrate 5 with different absorption axes. Thereafter, if necessary, the both sides of the substrate 5 are inspected for misalignment. For the inspection, it is possible to adopt a configuration that is usually made by an inspection unit equipped with a camera.
  • the bonding is performed from the lower surface of the substrate 5, and the rectifying environment to the substrate 5 is not hindered. For this reason, foreign matter mixing into the bonding surface of the substrate 5 can also be prevented, and more accurate bonding becomes possible.
  • FIG. 4 (a) and FIG. 4 (b) show the velocity vector of the airflow in the under-paste type manufacturing system similar to the present invention.
  • the area A is an area where the unwinding part is installed
  • the area B is an area where the polarizing film mainly passes
  • the area C is an area where the winding part is installed. It is.
  • clean air is supplied from the HEPA filter 40.
  • FIG. 4A since the grating 41 through which clean air can pass is installed, the airflow can move in the vertical direction via the grating 41.
  • FIG.4 (b) since the grating 41 is not installed, after an airflow contacts a floor, it will move along a floor.
  • FIGS. 4 (a) and 4 (b) Since the manufacturing system shown in FIGS. 4 (a) and 4 (b) is a bottom-attached type, the air current from the HEPA filter 40 is not hindered by the polarizing film as shown in FIGS. 14 (a) and 14 (b). For this reason, the direction of the airflow vector is almost directed toward the substrate, and it can be said that a preferable rectification environment is realized in the clean room.
  • the grating 41 is installed and not installed in FIG. 4B, but the same preferable state is shown in both figures.
  • the substrate transport mechanism is formed horizontally, but is not installed as a series of structures. For this reason, the airflow can pass between the substrate transport mechanisms. After the substrate is held by a reversing mechanism to be described later, the substrate is transferred between the substrate transport mechanisms.
  • substrate 5 is first conveyed by a long side opening (a long side is orthogonal to a conveyance direction), and is conveyed by a short side opening (a short side is orthogonal to a conveyance direction) after that. It has become.
  • FIG. 5 is a cross-sectional view showing a modification of the bonding apparatus 60 according to the present invention.
  • the 1st unwinding part 1b and the 2nd unwinding part 1c in the 1st film conveyance mechanism 51 which concern on FIG. 5 are the structures which can move along a horizontal with respect to the direction of the core 1d of a polarizing film similarly to FIG. It has become.
  • the 1st film conveyance mechanism 51 is provided with the film connection part (1st film connection part) 83 and the film connection part (2nd film connection part) 93, and can connect the polarizing films 10 and 20 by these. .
  • FIG. 6 is a perspective view showing the film connecting portion 83 and the cutting machine 87.
  • the film connecting portion 83 includes suction portions 84 and 84 a and a cutting and bonding portion 85.
  • the adsorption portions 84 and 84a are members for adsorbing and fixing the polarizing film.
  • the suction portions 84 and 84a have a flat plate shape and include a plurality of suction mechanisms 89 on the surface thereof.
  • the adsorption mechanism 89 is not particularly limited as long as the polarizing film can be adsorbed, and a configuration in which the polarizing film is adsorbed by sucking air with a pump can be adopted.
  • the cutting and bonding part 85 is rotatable and has a plurality of surfaces. Specifically, the cut bonding part 85 has a polygonal shape. Moreover, it arrange
  • the cutting and bonding part 85 is in a direction perpendicular to the polarizing film 10 and can be moved in a direction close to the polarizing film 10 to return to the original position. Thereby, it is possible to avoid reliably that the corner
  • lamination bonding part 85 is a polygonal shape and is also provided with the cutting
  • a mating surface may be further provided.
  • the cut bonding part 85 of FIG. 6 between the bonding surfaces and between the cutting support surface and the bonding surface are chamfered, and the corner part is formed, the cutting bonding part 85 and the polarizing film.
  • the size of the cut and bonded portion 85 may be appropriately determined depending on the width of the polarizing film 10 and is not particularly limited.
  • the length is 200 mm or more and 2000 mm or less, and the width is 10 mm or more and 300 mm or less. can do.
  • FIG. 7 is a perspective view showing the cutting and bonding part 85.
  • FIG. 7 shows a state in which the cutting and bonding portion 85 of FIG. 6 is rotated by 1/3 turn clockwise.
  • the cutting and bonding unit 85 includes a cutting support surface 85 a that supports the polarizing film 10 along the width direction of the polarizing film 10. Moreover, it has the bonding surfaces 85b and 85c provided with the adsorption
  • a groove-shaped opening 86 is formed in the cutting support surface 85a, and the blade portion of the cutting machine 87 provided in the cutting bonding portion 85 shown in FIG. By forming the opening 86, the cutting machine 87 can be reliably passed along the width direction of the polarizing film 10, and the polarizing films 10 and 20 can be more accurately connected.
  • the cutting machine 87 As the cutting machine 87, a known cutter can be adopted, and the polarizing film 10 can be easily cut. Further, the cutting machine 87 is supported by a base portion 88 that can be driven in the width direction of the polarizing film 10.
  • the bonding surfaces 85b and 85c have the same configuration as each other, and include a plurality of suction mechanisms 89 in the same manner as the suction portions 84 and 84a.
  • the single-sided adhesive tape (connection material) 85d is arrange
  • the above single-sided adhesive tape 85d only needs to be able to bond polarizing films together, and a known single-sided adhesive tape can be used.
  • the film material of the single-sided adhesive tape 85d include polyethylene terephthalate film (PET film), cellulose, Japanese paper, aluminum, non-woven fabric, polytetrafluoroethylene, polyvinyl chloride, polyvinylidene chloride, polycarbonate, polyurethane, ABS resin, polyester, Examples thereof include polystyrene, polyethylene, polypropylene, polyacetal resin, polylactic acid, polyimide, and polyamide.
  • the pressure-sensitive adhesive used in the pressure-sensitive adhesive layer includes acrylic, epoxy, polyurethane, synthetic rubber, EVA, silicone, vinyl chloride, chloroprene rubber, cyanoacrylate, isocyanate, and polyvinyl alcohol. And pressure sensitive adhesives such as melamine resin.
  • the film connecting portion 83 is disposed so as to face the polarizing film 10. For this reason, in FIG. 5, since the polarizing film 10 is arrange
  • the film connecting portion 93 has the same structure as the film connecting portion 83. As shown in FIG. 5, the film connecting portions 83 and 93 are arranged so that the suction mechanisms of the suction portions provided in the film connecting portions 83 and 93 face each other. Moreover, the film connection parts 83 and 93 are arranged with the passage positions of the polarizing film 10 and the polarizing film 20 interposed therebetween. In addition, the manufacturing system 100 provided with the film connection part 83 * 93 is a preferable form in this Embodiment, and it is also possible to set it as the form which is not provided with the film connection part 83 * 93.
  • the polarizing film 10 is unwound from the 1st unwinding part 1 (unwinding process). Then, as shown in FIG. 3, only the polarizing film 10a is half-cut with a half cutter (not shown), and the release film 10b is peeled off with the knife edge 4 (peeling step). Further, the polarizing film 10a from which the release film 10b has been peeled and the substrate 5 are bonded together by pressure bonding with the nip rolls 6 and 6a (bonding step). The peeled release film 10b is wound up and collected by a winder (not shown). Through the series of steps, the substrate 5 and the polarizing film 10a are bonded to obtain an optical display device.
  • the polarizing film 10 of the first unwinding part 1 (11, 1b) and the polarizing film 20 of the second unwinding part 1a (11a, 1c) are cut. And among the polarizing film 10 of the 1st unwinding part 1 (11, 1b) and the polarizing film 20 of the 2nd unwinding part 1a (11a, 1c), the line side of the 1st unwinding part 1 (11, 1b) The polarizing film 10 or the second unwinding part 1a (11a, 1c) of the line side polarizing film 20 and the unwinding part of the second unwinding part 1a (11a, 1c) of the polarizing film 20 or first unwinding The polarizing film 10 on the unwinding part side of the part 1 (11, 1b) is connected. In other words, the “line side” indicates a direction in which the polarizing film is unwound. Examples of the connecting step include (1) a technique by an operator and (2) a technique using the
  • the conveyance speed of the polarizing film 10 is set to 0 m / min. After the above (after stopping the polarizing film 10), the operator cuts the polarizing film 10. Next, after unwinding the polarizing film 20 from the 1st unwinding part 11 and cut
  • the two unwinding portions of the first unwinding portions 1 and 11 are provided, so that the polarizing film 10. 20, the film can be immediately connected, and the polarizing film 20 can be unwound quickly. Therefore, unlike the conventional manufacturing system in which the unwinding unit is installed only at one place, the original roll roll can be replaced at the unwinding unit that is vacant during operation. Can be reduced. As a result, it is possible to shorten the manufacturing time of the optical display device.
  • the roll of the polarizing film 10 of the first unwinding unit 1 is replaced with a new roll while the polarizing film 20 is unwound.
  • the remaining amount of the polarizing film 20 decreases, it is of course possible to connect the polarizing film 20 and the polarizing film 10 in the same manner.
  • FIG. 8 is a process diagram illustrating a connection process by a manufacturing system including a film connection part.
  • the conveyance speed of the polarizing film 10 is set to 0 m / min.
  • the suction portions 84 and 84a and the cutting and bonding portion 85 are moved in the vertical direction with respect to the polarizing film 10.
  • the polarizing film 10 is sucked and fixed by the suction mechanism 89 of the suction portions 84 and 84a (suction process).
  • the cutting support surface 85a is in contact with the polarizing film 10 in the cutting and bonding unit 85.
  • the polarizing film 10 is cut by moving a cutting machine (not shown) along the opening 86 (cutting step).
  • the cutting and bonding part 85 is moved in the direction perpendicular to the polarizing film 10 and away from the polarizing film 10 (right side in the figure), rotated counterclockwise by 1/3 turn, and the polarizing film 10 In the direction perpendicular to the polarizing film 10 (the left side in the figure).
  • the single-sided adhesive tape 85d of the bonding surface 85b is bonded together so that the cutting line of the polarizing film 10 which opposes the single-sided adhesive tape 85d (not shown) may be covered. Joint process).
  • the said cutting line shows the edge
  • the single-sided adhesive tape 85d is disposed so as to cover the cutting line, that is, the polarizing film 10 is also disposed on a portion where the polarizing film 10 does not exist beyond the cutting line.
  • the single-sided adhesive tape 95d is adhered to the polarizing film 20 in the same manner as in FIGS. 8A to 8C.
  • the same members as those described above are given the same names, and the description thereof is omitted.
  • a cutting machine (not shown) is formed on the cutting support surface 95a.
  • the polarizing film 20 is cut by moving along the opening 96.
  • the cut and bonded portion 95 is moved in a direction perpendicular to the polarizing film 20 and away from the polarizing film 20 (left side in the figure), and rotated clockwise by 1/3 turn to the polarizing film 20 On the other hand, it is moved in a direction perpendicular to the polarizing film 20 (right side in the figure).
  • the single-sided adhesive tape 95d can be affixed so that the cutting line of the polarizing film 20 facing the single-sided adhesive tape 95d of the bonding surface 95b may be covered.
  • the adsorbing portions 84 and 84a and the cutting and bonding portion 85 are brought close to the adsorbing portions 94 and 94a and the cutting and bonding portion 95 (film connecting portion 93).
  • the cut surfaces of the polarizing film 10 and the polarizing film 20 are matched with each other (proximity step). Thereby, among the single-sided adhesive tapes 85d and 95d that cover the cutting line of the polarizing film 10/20, the part beyond the cutting line (the part not bonded to the polarizing film 10/20) is the other polarizing film 20/20.
  • the polarizing films 10 and 20 are connected to each other.
  • the film connecting part 83 is brought close to the film connecting part 93, but the film connecting part 93 may be made close to the film connecting part 83, and the film connecting parts 83 and 93 are made close to each other. May be.
  • the cutting and bonding parts 85 and 95 are perpendicular to the polarizing films 10 and 20, respectively, and are moved away.
  • the cutting and bonding part 85 is rotated clockwise by 1/3 turn, and the cutting and bonding part 95 is rotated counterclockwise by 1/3 turn. Then, the cutting and bonding parts 85 and 95 are moved in the direction perpendicular to the polarizing films 10 and 20 and in the adjacent directions.
  • the adsorbing portions 84 and 84a and the cutting and bonding portion 85 are returned to the positions shown in FIG. 8A, and the series of steps is completed.
  • the single-sided adhesive tapes 85d and 95d are preliminarily adsorbed on the bonding surfaces 85c and 95c, after a new roll of the polarizing film 10 is installed on the second unwinding portion 1c. 8 (a) to (c) are performed on the polarizing film 20, and the steps of FIGS. 8 (d) to (e) are performed on the polarizing film 10.
  • FIGS. The polarizing films 20 and 10 can be connected through the step h). Of course, it is also possible to continuously connect the polarizing films by supplementing the used single-sided adhesive tapes 85d and 95d.
  • the polarizing film is adsorbed, cut, and bonded in a shorter time and more accurately than the connecting step by the operator. Is preferable.
  • the manufacturing system when only the first unwinding portion 1 is used, the first unwinding portion 11 is not used, and further, the film connecting portions 83 and 93 are not used, the operator can move to the first unwinding portion 1. Since it is necessary to replace the polarizing film 10 after replacing a new polarizing film, the connecting step requires about 30 minutes. For this reason, it is clear that the manufacturing system according to the present embodiment is useful.
  • the reversing mechanism 65 reverses the substrate 5 whose short side or long side is along the transport direction into a state where the long side or short side is along the transport direction of the second substrate transport mechanism. That is, the front surface and the back surface of the substrate 5 are reversed, and the long side and the short side of the substrate 5 along the transport direction are switched.
  • the structure of the reversing mechanism 65 will be described with reference to FIG.
  • FIG. 9 is a perspective view showing the reversing mechanism 65 and shows the operation of the reversing mechanism 65 in the process of reversing the substrate 5.
  • the reversing mechanism 65 includes substrate support portions 66a and 66b, a substrate reversing portion 67, and a rotating shaft portion 68. Each member will be described below.
  • the substrate support portion 66a is a member that supports the substrate 5, and can hold the placed substrate 5. Further, the substrate support portion 66a includes an adsorbing means for adsorbing the substrate 5 as a preferable form. A well-known thing can be used as an adsorption means, for example, an air suction type adsorption means can be used.
  • the substrate support portion 66a is composed of a pipe-shaped arm and suction means, and the air sucked by the suction means passes through the arm.
  • the shape of the arm and suction means is as follows. It is not limited to the said structure.
  • the substrate support portion 66a has a structure in which two suction means are provided on the arm, and includes a pair of arm groups each including three arms. Further, four suction means are arranged on the diagonal line of the substrate 5, and two further suction means are arranged between the suction means in the length direction of the substrate 5.
  • the number of arms and the number of suction means are merely examples. For example, when a large substrate is reversed, the number of arms and the number of suction means may be increased as appropriate. Further, it is of course possible to make changes such as concentrating the installation location of the suction means on the central portion of the substrate 5 or changing it around the edge of the substrate 5.
  • the substrate support portion 66a When the substrate support portion 66a does not place the substrate 5, the distance between the arm groups is widened so that the substrate 5 can be received (hereinafter, this state is referred to as a “standby state”).
  • the substrate support portion 66b has a structure in which the distance between the arms of the substrate 5 is also increased, and has the same structure as the substrate support portion 66a. Further, since the pair of arm groups sandwich the substrate 5, the distance between the arm groups can be reduced. As described above, the distance between the arm groups can be changed.
  • the substrate support portions 66a and 66b have motors, and the distance between the arm groups is changed by changing the rotational motion of the motors to a linear motion. It has become. In addition, if it is the structure which can change the distance between arm groups, you may change and use for the structure provided with a motor.
  • the substrate reversing unit 67 is connected to the substrate supporting units 66a and 66b, and reverses the substrate 5 by rotating around the reversing axis M.
  • the substrate reversing part 67 is connected to each arm, and has a pipe-like structure as a preferable structure from the viewpoint of reducing the weight and reducing the air resistance during rotation.
  • a plate shape may be used instead of a pipe shape.
  • the substrate reversing unit 67 rotates around the reversing axis M.
  • the member that rotates the substrate reversing unit 67 include driving means using a motor.
  • the substrate reversing unit 67 includes a rotation shaft unit 68 as a preferred form. Since the rotation shaft portion 68 is disposed along the reversal axis M, it can be stably rotated along the reversal axis M.
  • the substrate reversing portion 67 is structured to rotate together with the rotating shaft portion 68, and the substrate reversing portion 67 is configured to easily rotate stably around the reversing axis M.
  • the substrate reversing part 67 including the rotating shaft part 68 can rotate more stably along the reversing axis M. Therefore, the substrate 5 can be reversed more stably.
  • the rotating shaft portion 68 can rotate toward the front surface with respect to the substrate 5 before reversing, or conversely, rotate toward the back surface.
  • the reversal axis M has an inclination of 45 ° with respect to a straight line passing through the center of the substrate 5 before reversal in the first substrate transport mechanism and perpendicular to the transport direction D1 of the substrate 5.
  • the straight line having an inclination of 45 ° is a straight line along the inversion axis M in FIG.
  • the “surface including the substrate 5 before inversion in the first substrate transport mechanism” means the same plane as the substrate 5 before inversion, and in FIG. 9A, refers to a surface located on the XY plane.
  • FIG. 9 illustrates an example in which the substrate support portions 66a and 66b, the substrate reversing portion 67, and the rotating shaft portion 68 are separately configured. However, as long as each member has a function, it is configured as an integral member. Of course it is good.
  • the short side of the substrate 5 is along the transfer direction D1 of the first substrate transfer mechanism, and the long side of the substrate 5 is along the transfer direction D2 of the second substrate transfer mechanism.
  • a case of inversion will be described.
  • FIG. 9 (w1) is a perspective view showing the reversing mechanism 65 in a standby state.
  • the substrate support portion 66a is in a state where the distance between the pair of arm groups is widened so that the substrate 5 can be received.
  • the substrate support portion 66b is disposed at a position where the substrate 5 is inverted, and the distance between the pair of arm groups provided in the substrate support portion 66b is increased in order to release the inverted substrate 5. ing.
  • the substrate 5 When the substrate 5 is transported to the substrate support portion 66a along the transport direction D1 on the XY plane, the substrate 5 is placed on the substrate support portion 66a. Specifically, the substrate 5 moves between the arm groups, and the substrate 5 is placed on the arm group below the substrate support portion 66a. Whether or not the substrate 5 is placed on the arm group is determined by a substrate confirmation sensor.
  • the substrate check sensor is provided in each of the substrate support portion 66a and the substrate support portion 66b. However, the substrate check sensor only needs to be provided at a position where the placement of the substrate 5 can be confirmed. It may be provided other than.
  • the arm groups approach each other and the substrate 5 is sandwiched. Further, the surface of the substrate 5 is adsorbed by the adsorbing means, and the substrate 5 is further fixed. In this way, the substrate 5 can be further fixed by the suction by the suction means, as compared with the case where the substrate 5 is held only by the arm group. Thereby, it can avoid that the board
  • FIG. 9B shows a state in which the substrate reversing unit 67 has rotated 90 ° about the reversing axis M from the state of FIG. 9A.
  • the substrate 5 is located along the Z-axis direction.
  • the substrate support portion 66 b does not sandwich the substrate 5 and is rotated 90 ° downward along with the rotation of the substrate inversion portion 67.
  • the substrate reversing portion 67 and the rotating shaft portion 68 are rotated by 90 ° about the reversing axis M, whereby the substrate 5 is reversed to a position symmetrical with respect to the reversing axis M.
  • substrate 5 by the side of the conveyance direction D2 is located in the conveyor roll of a 2nd board
  • the polarizing film can be bonded from the lower surface by the nip rolls 16 and 16a so that the absorption axes thereof are orthogonal to each other.
  • the operation of the reversing mechanism 65 draws a 180 ° semicircular orbit about the reversing axis M, and does not require a complicated operation. Therefore, one substrate 5 can be reversed with a short tact time.
  • a pair of substrate support portions 66a and 66b are provided in line symmetry with respect to the inversion axis M. Therefore, when the substrate 5 is inverted by the substrate support portion 66a, the other substrate support portion 66b is moved to the position where the substrate 5 before the inversion in FIG.
  • the substrate 5 is placed on the lower arm group of the pair of arm groups. . Thereafter, as shown in FIG. 9 (w2), the substrate 5 is transported in the transport direction D2 with the rotation of the conveyor roll provided in the second substrate transport mechanism.
  • the substrate support portion 66b has moved to the position of the substrate 5 before inversion.
  • the next substrate 5 'to be transported can be quickly reversed without waiting for the movement of the substrate support 66a. That is, according to the bonding apparatus 60, not only can a single substrate be reversed, but also the time can be shortened until the next substrate is placed after the substrate is reversed. As a result, a plurality of substrates can be sequentially processed with a short tact time.
  • FIGS. 9 (a) to (c) are plan views showing the rotation process of the substrate 5 corresponding to FIGS. 9 (a) to (c).
  • FIG. 10 illustrates the first substrate transport mechanism 61 and the second substrate transport mechanism 62.
  • a plurality of conveyor rolls that transport the substrate 5 are provided orthogonal to the transport direction of the substrate 5.
  • the means for transporting the substrate 5 is not limited to the conveyor roll, and other alternative means may be used.
  • the first substrate transport mechanism 61 and the second substrate transport mechanism 62 transport the substrate 5 in the same direction. That is, the transport directions D1 and D2 are in the same direction. For this reason, the first substrate transport mechanism 61 and the second substrate transport mechanism 62 have linear shapes along the transport directions D1 and D2, respectively. That is, it does not have a complicated structure such as an L shape. Therefore, the bonding apparatus 60 according to the present invention is very simple to install and has a structure with excellent area efficiency.
  • the substrate 5 is transported along the transport direction D1, and is placed on the substrate support portion 66a from the end of the first substrate transport mechanism 61 by the rotational force of the conveyor roll. Then, after the placed substrate 5 is sandwiched between the pair of arm groups of the substrate support portion 66a, the surface of the substrate is adsorbed and fixed by the adsorbing means.
  • the state of the reversing mechanism 65 is shown in FIG.
  • FIG. 10B shows a state in which the substrate reversing portion 67 has rotated 90 ° about the reversing axis M from FIG. 10A.
  • the substrate support portion 66b does not sandwich the substrate 5, but is rotated 90 ° downward along with the rotation of the substrate inversion portion 67.
  • the substrate 5 is reversed by rotating the substrate reversing portion 67 by 90 ° about the reversing axis M together with the rotating shaft 68.
  • FIG. 10C shows the state of the reversing mechanism 65 when the substrate 5 is reversed.
  • the substrate 5 is inverted at a position symmetrical with respect to the inversion axis M.
  • the end of the substrate 5 is positioned in the second substrate transport mechanism 62. As described with reference to FIG. 9C, thereafter, the suction of the substrate 5 is released, and the distance between the arm groups is increased. Thereafter, the substrate 5 is placed on the lower arm group of the pair of arm groups. Furthermore, it will be conveyed to the board
  • the substrate support portions 66a and 66b are configured to include the suction means.
  • the substrate 5 may be fixed only by the arm group. In that case, the operation
  • FIG. 11 is a block diagram illustrating a configuration of the reversing mechanism 65 and the interface unit 165 coupled to the reversing mechanism 65.
  • the configuration shown in FIG. 11 is merely an example, and the reversing mechanism 65 is not limited to this example.
  • the reversing mechanism 65 is further connected to the interface unit 165.
  • the interface unit 165 receives an operation input from an operator and transmits input data to the display and inversion mechanism 65.
  • the reversing mechanism 65 includes substrate support portions 66a and 66b, a substrate reversing portion 67, and a rotating shaft portion 68, and these are connected to the control portion 70 in the interface portion.
  • the interface unit 165 includes an input unit 166, a display unit 167, a storage unit 168, and a control unit 70.
  • the input unit 166 transmits information on the substrate 5 and the like to the storage unit 168. As each information of the board
  • Other information includes the positions of the first substrate transport mechanism 61 and the second substrate transport mechanism 62 and the positions of the conveyor rolls included in these, the transport directions D1 and D2, the position of the reversal axis M, the rotational speed of the substrate 5, and the like. Can be mentioned.
  • the interface unit 165 includes an input device (not shown).
  • the input device may be any device that allows an operator to input various types of information, and may be configured with, for example, an input key or a touch panel.
  • the display unit 167 displays the contents of various information input by the input unit 166, and can be configured by a known liquid crystal display or the like.
  • the storage unit 168 is connected to the control unit 70 and the input unit 166.
  • the storage unit 168 stores information input from the input unit.
  • the storage unit 168 includes a storage device such as a RAM (random access memory) or an HDD (hard disk drive), and stores various data and various programs. Is.
  • the control unit 70 controls the substrate support units 66a and 66b, the suction means included therein, the substrate reversing unit 67, and the rotating shaft unit 68 based on the information received from the storage unit 168.
  • the control unit 70 stores rotation information for controlling the rotation of the substrate 5.
  • the rotation information for controlling the rotation of the substrate 5 is rotation information for controlling the reversing mechanism 65. (1)
  • the substrate 5 arrives at the substrate support portion 66a (or 66b), and (2) the sensor senses the substrate 5. (Sensor ON), (3) the substrate 5 is held by the arm group of the substrate support portion 66a, (4) the substrate 5 is inverted, and (5) the substrate inversion portion 67 is inverted after the substrate 5 is released. This is information (or a program) for controlling a series of operations of the reversing mechanism 65.
  • the control unit 70 includes a CPU (central processing unit), a ROM (read only memory) that stores the program, a RAM that expands the program, a storage device (recording medium) such as a memory that stores the program and various data, and the like. It can be set as the structure provided.
  • the manufacturing system 100 includes a control unit 70, a cleaning unit 71, a misalignment inspection device 72, a bonded foreign matter automatic inspection device 73, and a sorting and conveying device 74.
  • the bonding deviation inspection device 72, the bonded foreign substance automatic inspection device 73, and the sorting and conveying device 74 perform processing such as inspection on the substrate 5 after bonding, that is, the liquid crystal display device.
  • FIG. 12 is a block diagram showing the relationship of each member included in the above-described liquid crystal display device manufacturing system
  • FIG. 13 is a flowchart showing the operation of the liquid crystal display device manufacturing system.
  • the operation of the liquid crystal display device will be described together with the description of each member.
  • the control unit 70 is connected to the cleaning unit 71, the misalignment inspection device 72, the bonded foreign matter automatic inspection device 73, and the sorting and conveying device 74, and controls them by transmitting control signals thereto.
  • the control unit 70 is mainly configured by a CPU (Central Processing Unit) and includes a memory or the like as necessary.
  • CPU Central Processing Unit
  • the cleaning unit 71 In the case where the cleaning unit 71 is provided in the manufacturing system 100, the substrate 5 in the first substrate transport mechanism 61 is transported to the cleaning unit 71 at the front edge of the long side in order to reduce the tact time in the cleaning unit 71. Is preferred. Usually, since the cleaning in the cleaning unit 71 takes a long time, this configuration is very effective from the viewpoint of shortening the tact time.
  • a bonding step (including a reversing operation of the substrate 5) for bonding the polarizing film to both surfaces of the substrate 5 is performed (S2 in FIG. 13). This step will be described with reference to FIGS. That's right.
  • the sticking deviation inspection device 72 is for inspecting the presence or absence of sticking deviation of the polarizing film on the bonded substrate 5.
  • the sticking deviation inspection device 72 is constituted by a camera and an image processing device, and the camera is installed at the bonding position of the substrate 5 on which the polarizing film is bonded by the nip rolls 16 and 16a.
  • the substrate 5 is photographed by the camera, and by processing the photographed image information, the substrate 5 can be inspected for the presence or absence of sticking (sticking slip inspection step, S3 in FIG. 13).
  • the misalignment inspection apparatus 72 a conventionally known misalignment inspection apparatus can be used as the misalignment inspection apparatus 72.
  • the bonded foreign matter automatic inspection device 73 inspects the presence or absence of foreign matter on the bonded substrate 5.
  • the bonded foreign matter automatic inspection device 73 is configured by a camera and an image processing device, like the misalignment inspection device 72, and transports the second substrate of the substrate 5 after the polarizing film is bonded by the nip rolls 16 and 16a.
  • the camera is installed in the mechanism (bonding device 60).
  • substrate 5 is image
  • the foreign matter include foreign matters such as dust, fish eyes, and the like.
  • a conventionally well-known bonding foreign material inspection apparatus can be used as the bonding foreign material automatic inspection apparatus 73.
  • S3 and S4 may be performed in the reverse order or simultaneously. One step can be omitted.
  • the sorting and conveying device 74 determines the presence or absence of sticking misalignment and foreign matter based on the inspection results from the sticking misalignment inspection device 72 and the bonded foreign matter automatic inspection device 73.
  • the sorting and conveying device 74 only needs to receive an output signal based on the inspection result from the sticking misalignment inspection device 72 and the bonding foreign matter automatic inspection device 73 and can sort the bonded substrates 5 into non-defective products or defective products. . Therefore, a conventionally known sorting and conveying system can be used.
  • both the misalignment and foreign matter are detected.
  • the bonded substrate 5 is not used. Sorted as good (S7).
  • the bonded substrates 5 are classified as non-defective products (S6).
  • the non-defective product and the defective product can be quickly sorted, and the tact time can be shortened.
  • the sorting and conveying device 74 may be configured to determine the presence / absence of only one of the sticking misalignment and the foreign matter.
  • the present invention also includes the following aspects.
  • the substrate support part includes an adsorption unit that adsorbs the substrate.
  • the substrate can be further fixed as compared with the case where the substrate is held only by the substrate support portion.
  • the substrate reversing portion is provided with a rotating shaft portion that rotates together with the substrate reversing portion, and the rotating shaft portion is disposed along the reversing axis. Is preferred.
  • the substrate reversing portion including the rotating shaft portion can rotate more stably along the reversing axis. Therefore, the substrate can be reversed more stably.
  • the 1st film conveyance mechanism and 2nd film conveyance mechanism which convey a polarizing film are provided, and the said 1st film conveyance mechanism was protected by the peeling film.
  • a plurality of unwinding sections for unwinding the polarizing film, a cutting section for cutting the polarizing film, a removing section for removing the release film from the polarizing film, and a plurality of winding sections for winding the removed release film are provided.
  • the second film transport mechanism includes a plurality of unwinding sections for unwinding the polarizing film protected by the peeling film, a cutting section for cutting the polarizing film, and a removing section for removing the peeling film from the polarizing film.
  • the first bonding unit is provided on the top of the structure and the second film transport mechanism, and bonds the polarizing film from which the release film has been removed to the substrate.
  • the unwinding part and the winding part are provided in plural, when the remaining amount of the original film of the polarizing film in one unwinding part decreases, the other unwinding part is provided in the original film. It is possible to connect raw materials. As a result, the operation can be continued without stopping the unwinding of the polarizing film, and the production efficiency can be increased.
  • the unwinding part can move horizontally with respect to the core direction of the polarizing film, and the first unwinding part and the second unwinding are the unwinding parts. It is preferable that the parts are arranged side by side.
  • the 1st film connection part and 2nd which connect the polarizing film unwound from the 1st unwinding part, and the polarizing film unwound from the 2nd unwinding part.
  • the film connecting part is interposed between the passage positions of both the polarizing films, and the first film connecting part is disposed to face the polarizing film unwound from the first unwinding part, and the second film connecting part is It arrange
  • the said 1st film connection part and 2nd film connection part are two adsorption
  • the plurality of surfaces of the cutting and bonding unit includes a cutting support surface that supports the polarizing film along the width direction of the polarizing film, and an adsorption mechanism that adsorbs and holds the connecting material that connects the polarizing films to each other. It has at least the above bonding surface, and it is preferable that the first film connecting portion and the second film connecting portion can be close to each other.
  • the polarizing film can be adsorbed by the adsorbing portion, and the adsorbing polarizing film can be cut by the cutting machine while being supported by the cutting support surface. Then, the cutting bonding part can be rotated and the connection material of a bonding surface can be bonded with respect to the cut
  • an opening through which the cutting machine can pass is formed in the cutting support surface along the width direction of the polarizing film.
  • the cutting machine can be reliably passed along the width direction of the polarizing film, and the polarizing films can be more accurately connected later.
  • the cutting machine has a round blade shape.
  • the cutting and bonding part is movable in the vertical direction with respect to the polarizing film adsorbed by the adsorption part.
  • the cutting and bonding part when the cutting and bonding part rotates, the cutting and bonding part can move in a direction perpendicular to the polarizing film and away from the polarizing film, and then rotate. Thereby, when a cutting bonding part rotates, it can avoid reliably contacting a polarizing film.
  • the first film transport mechanism and the second film transport mechanism detect a defect display attached to the polarizing film unwound from the first unwinding section. It is preferable to have a defect detection unit, a bonding avoidance unit that discriminates the defect display and stops the conveyance of the substrate, and a recovery unit that recovers the polarizing film from which bonding with the substrate is avoided.
  • the yield can be increased.
  • the first film transporting mechanism before the polarizing film is bonded to the lower surface of the substrate by the first bonding portion, the first film transporting mechanism includes a cleaning unit for cleaning the substrate. It is preferable to transport the substrate with the short side of the substrate along the transport direction.
  • the substrate can be cleaned by the cleaning unit in a state where the long sides of the substrate are orthogonal to the substrate transport direction. That is, since the distance of the substrate along the transport direction can be reduced, the tact time required for cleaning can be further shortened. As a result, it is possible to provide a polarizing film laminating apparatus that is further excellent in production efficiency.
  • substrate with which the polarizing film was bonded by the said 2nd bonding part are provided. It is preferable.
  • the presence / absence of sticking misalignment is determined based on the inspection result of the sticking misalignment inspection apparatus, and the substrate on which the polarizing film is bonded is classified based on the determination result. It is preferable to provide a transport device.
  • inspects the foreign material in the board
  • the presence or absence of a foreign material is determined based on the inspection result by the said bonded foreign material automatic test
  • the manufacturing system of the liquid crystal display device of this invention has the bonding foreign material automatic test
  • a determination is made as to whether there is a sticking deviation and a foreign matter, and based on the determination result, a sorting and conveying device is provided that sorts the substrate on which the polarizing film is bonded. It is preferable.
  • the polarizing film bonding apparatus according to the present invention can be used in the field of bonding a polarizing film to a substrate.

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PCT/JP2010/063579 2010-04-23 2010-08-10 偏光フィルムの貼合装置およびこれを備える液晶表示装置の製造システム WO2011132332A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201080006598.5A CN102395918B (zh) 2010-04-23 2010-08-10 偏振膜的贴合装置以及具有该贴合装置的液晶显示装置的制造系统
KR1020117018258A KR20120131087A (ko) 2010-04-23 2010-08-10 편광필름의 접합장치 및 이것을 구비하는 액정표시장치의 제조시스템
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KR20150004802A (ko) * 2012-04-03 2015-01-13 스미또모 가가꾸 가부시키가이샤 광학 표시 디바이스의 생산 시스템
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TW201137434A (en) 2011-11-01
JP5613582B2 (ja) 2014-10-29
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