WO2015029998A1 - Dispositif de pelliculage, système et procédé de production de dispositif d'affichage optique - Google Patents

Dispositif de pelliculage, système et procédé de production de dispositif d'affichage optique Download PDF

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Publication number
WO2015029998A1
WO2015029998A1 PCT/JP2014/072301 JP2014072301W WO2015029998A1 WO 2015029998 A1 WO2015029998 A1 WO 2015029998A1 JP 2014072301 W JP2014072301 W JP 2014072301W WO 2015029998 A1 WO2015029998 A1 WO 2015029998A1
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WO
WIPO (PCT)
Prior art keywords
film
display panel
optical
liquid crystal
bonding
Prior art date
Application number
PCT/JP2014/072301
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English (en)
Japanese (ja)
Inventor
和範 岸▲崎▼
達也 土岡
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住友化学株式会社
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Publication of WO2015029998A1 publication Critical patent/WO2015029998A1/fr

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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
    • G02F1/1303—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
    • 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
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133631—Birefringent elements, e.g. for optical compensation with a spatial distribution of the retardation value

Definitions

  • the present invention relates to a film laminating apparatus, an optical display device production system, and an optical display device production method.
  • This application claims priority based on Japanese Patent Application No. 2013-178232 for which it applied on August 29, 2013, and uses the content here.
  • a 3D image can be viewed through polarized glasses while simultaneously displaying an image corresponding to the left eye and an image corresponding to the right eye. Is possible.
  • an FPR film is bonded to the surface side of the liquid crystal display panel.
  • the FPR film has a plurality of polarization pattern columns corresponding to a plurality of pixel columns of the liquid crystal display panel.
  • the plurality of polarization pattern rows are configured by alternately arranging left-eye polarization pattern rows and right-eye polarization pattern rows having different polarization directions.
  • the left-eye polarization pattern row is provided corresponding to a pixel row that forms an image corresponding to the left eye.
  • the right-eye polarization pattern row is provided corresponding to the pixel row that forms an image corresponding to the right eye.
  • each boundary line of the plurality of polarization pattern rows is located between each of the plurality of pixel rows. If this boundary line deviates from between the pixel columns, it causes crosstalk such as mixing the image of the opposite eye into the image of the left and right eyes.
  • the position of the alignment mark provided on the liquid crystal display panel is detected by a detection camera. Positioning (alignment adjustment) between the held FPR film and the liquid crystal display panel is performed.
  • the liquid crystal display panel When detecting the position of the alignment mark, the liquid crystal display panel is irradiated with illumination light, an image of the position irradiated with the illumination light is captured by a detection camera, and then the image is processed to identify the position of the alignment mark .
  • the position detection accuracy of the alignment mark may be lowered due to a processing flaw generated on the surface of the mounting surface on which the liquid crystal display panel is mounted.
  • This invention is proposed in view of such a conventional situation,
  • the film bonding apparatus which can raise the bonding precision of the film with respect to a panel, and the optical display provided with such a film bonding apparatus
  • An object of the present invention is to provide a device production system and a method for producing an optical display device using such a film bonding apparatus.
  • the film bonding apparatus is a film bonding apparatus that bonds a film to one surface of a panel, the stage having a mounting surface on which the panel is mounted, and the film Based on the detection result from the position detection mechanism, the position detection mechanism which detects the position of the alignment mark provided in the panel, the alignment member provided on the panel, and the panel on the mounting surface described above A moving operation mechanism for transferring the film held on the holding surface to a predetermined region of the panel by moving the bonding member relative to the mounting surface.
  • An illumination unit that emits illumination light to the upper panel, an imaging unit that captures an image of a position irradiated with the illumination light, and an image that processes the image and detects the position of the alignment mark
  • a processing unit the alignment mark and a position opposed to the placement surface, the low reflectivity portion is provided to reduce the reflectance of the illumination light.
  • the low reflection portion may be a low reflection member provided on the placement surface.
  • the thickness of the low reflection member is smaller than a gap formed between the placement surface and the panel.
  • the low reflection portion may be a low reflection surface obtained by treating the surface of the placement surface.
  • the low reflection portion may be a recess or a hole provided in the mounting surface.
  • An optical display device production system is an optical display device production system in which an optical film is bonded to an optical display panel, and the optical film is bonded to the optical display panel.
  • a film laminating apparatus is provided, and the film laminating apparatus is the film laminating apparatus according to any one of the above aspects (1) to (5).
  • An optical display device production method is an optical display device production method in which an optical film is bonded to an optical display panel, and the optical film is bonded to the optical display panel. Including the film bonding process to combine, in the said film bonding process, the film bonding apparatus in any one of the aspect of said (1) to (5) is used.
  • the optical display panel is an image display panel having a plurality of pixel columns
  • the optical film has a plurality of polarization pattern columns corresponding to the plurality of pixel columns.
  • a phase difference film, and in the film laminating step, the patterned phase difference film is placed in the image display panel so that each boundary line of the plurality of polarization pattern rows is located between each of the plurality of pixel rows. The method of pasting may be sufficient.
  • the bonding precision of the film with respect to the panel of a film bonding apparatus can be raised. Therefore, in the production system of the optical display device provided with such a film bonding apparatus, and the production method of the optical display device using such a film bonding apparatus, the bonding accuracy of the optical film with respect to the optical display panel is increased. By increasing it, it becomes possible to produce an optical display device with excellent display quality.
  • FIG. 2 is a cross-sectional view of the liquid crystal display panel taken along a cutting line AA shown in FIG. It is sectional drawing of the optical sheet which comprises an optical film.
  • This embodiment demonstrates the film bonding system which comprises the one part as a production system of an optical display device.
  • the film laminating system is applied to a panel-like optical display component (optical display panel) such as a liquid crystal display panel or an organic EL display panel, and a film-like optical member (optical Film).
  • the film bonding system constitutes a part of a production system for producing an optical display device including such optical display components and optical members.
  • a transmissive liquid crystal display device is illustrated as an optical display device.
  • the transmissive liquid crystal display device generally includes a liquid crystal display panel and a backlight.
  • illumination light emitted from the backlight is incident from the back side of the liquid crystal display panel, and light modulated by the liquid crystal display panel is emitted from the front side of the liquid crystal display panel, thereby displaying an image. It is possible.
  • FIG. 1 is a plan view showing the configuration of the liquid crystal display panel P.
  • FIG. 2 is a cross-sectional view of the liquid crystal display panel P along the cutting line AA shown in FIG. In FIG. 2, hatching showing a cross section is omitted.
  • the liquid crystal display panel P includes a first substrate P1, a second substrate P2 disposed opposite to the first substrate P1, a first substrate P1, and a second substrate. And a liquid crystal layer P3 disposed between the substrate P2 and the substrate P2.
  • the first substrate P1 is made of a transparent substrate having a rectangular shape in plan view.
  • the second substrate P2 is made of a transparent substrate having a rectangular shape that is relatively smaller than the first substrate P1.
  • the liquid crystal layer P3 is a region of a rectangular shape in plan view surrounded by a sealing material (not shown) between the first substrate P1 and the second substrate P2 and surrounded by the sealing material. Arranged inside.
  • a region that fits inside the outer periphery of the liquid crystal layer P3 in plan view is a display region P4, and an outer region that surrounds the periphery of the display region P4 is a frame portion FR.
  • a first optical film F11 as a polarizing film is bonded to the back surface (backlight side) of the liquid crystal display panel P.
  • a second optical film F12 as a polarizing film, and a third optical film as a FPR film (patterned retardation film) are stacked on the second optical film F12.
  • the optical film F13 is bonded.
  • the first, second, and third optical films F11, F12, and F13 may be collectively referred to as an optical film F1X.
  • FIG. 3 is a cross-sectional view showing the configuration of the optical sheet FX.
  • hatching showing a cross section is omitted.
  • the optical film F1X is obtained by cutting a sheet piece having a predetermined length from the long belt-like optical sheet FX shown in FIG.
  • the optical sheet FX includes a base material sheet F4, an adhesive layer F5 provided on one surface (upper surface in FIG. 3) of the base material sheet F4, and the base material sheet F4 via the adhesive layer F5.
  • a surface protection sheet F7 provided on the other surface (lower surface in FIG. 3) of the base sheet F4.
  • the base sheet F4 has a structure in which a polarizer F4a is sandwiched between a pair of protective films F4b and F4c.
  • the adhesive layer F5 adheres the base material sheet F4 to the liquid crystal display panel P.
  • the separate sheet F6 protects the adhesive layer F5, and is peeled from the adhesive layer F5 when a sheet piece (optical film F1X) is cut out from the optical sheet FX.
  • seat F6 from the optical film F1X is called the bonding sheet
  • the surface protection sheet F7 protects the surface of the base material sheet F4, and is peeled off from the surface of the base material sheet F4 after the base material sheet F4 is attached to the liquid crystal display panel P.
  • the base material sheet F4 it is good also as a structure which abbreviate
  • the protective film F4b on the adhesive layer F5 side may be omitted, and the adhesive layer F5 may be directly provided on the polarizer F4a.
  • the protective film F4c on the surface protective sheet F7 side may be subjected to a surface treatment such as a hard coat treatment that protects the outermost surface of the liquid crystal display panel P or an antiglare treatment that provides an antiglare effect. .
  • the surface protection sheet F7 can be omitted.
  • FIG. 4 is a plan view showing the configuration of the film bonding system 1.
  • FIG. 5 is a side view showing the configuration of the film bonding system 1.
  • the film bonding system 1 includes a carry-in conveyor 2, a carry-out conveyor 3, and an intermediate conveyor 4 as shown in FIGS. 4 and 5.
  • the carry-in conveyor 2 and the carry-out conveyor 3 are arranged in parallel to each other.
  • the intermediate conveyor 4 is disposed between the carry-in conveyor 2 and the carry-out conveyor 3.
  • the intermediate conveyor 4 extends in a direction orthogonal to the carry-in conveyor 2 and the carry-out conveyor 3 from the board carry-in position 2 a of the carry-in conveyor 2 toward the substrate carry-out position 3 a of the carry-out conveyor 3.
  • substrate carrying-in position 2a of the conveyor 2 for carrying in is made into the starting point of a film bonding process
  • substrate carrying-out position 3a of the conveyor 3 for carrying out is made into the end point of a film bonding process.
  • the upstream side in the transport direction of the liquid crystal display panel P is referred to as the panel transport upstream side
  • the downstream side in the transport direction of the liquid crystal display panel P is referred to as the panel transport downstream side.
  • the liquid crystal display panel P is conveyed in a state of being placed on the carry-in rack 5 and the carry-out rack 6, respectively.
  • the liquid crystal display panel P is transported in a direction in which the short side of the display area P4 is aligned with the transport direction.
  • the intermediate conveyor 4 for example, the liquid crystal display panel P is transported in a direction in which the long side of the display area P ⁇ b> 4 is along the transport direction.
  • the film bonding system 1 includes a first transport device 7 and a second transport device 8.
  • the first transport device 7 transports the liquid crystal display panel P from the substrate carry-in position 2 a to the initial position 4 a of the intermediate conveyor 4.
  • the second transport device 8 transports the liquid crystal display panel P from the end point position 4 b of the intermediate conveyor 4 to the substrate unloading position 3 a of the unloading conveyor 3.
  • the cleaning device 9 On the line formed by the intermediate conveyor 4, the cleaning device 9, the first film laminating device 10, the second film laminating device 11, and the film from the upstream side of the panel conveyance toward the downstream side of the panel conveyance
  • inspection apparatus 14 are arrange
  • the film bonding system 1 includes a third transport device 15, a fourth transport device 16, and a fifth transport device 17.
  • the 3rd conveying apparatus 15 conveys liquid crystal display panel P mutually between the 1st film bonding apparatus 10 and the intermediate conveyor 4 from the 1st panel delivery position 4c of the intermediate conveyor 4 as the starting point.
  • the 4th conveying apparatus 16 starts liquid crystal display panel P among the 2nd film bonding apparatus 11, the film peeling apparatus 12, and the intermediate conveyor 4 from the 2nd panel delivery position 4d of the intermediate conveyor 4. Carry each other.
  • the 5th conveying apparatus 17 mutually conveys liquid crystal display panel P between the 3rd film bonding apparatus 13 and the intermediate conveyor 4 from the 3rd panel delivery position 4e of the intermediate conveyor 4 as the starting point.
  • the film bonding system 1 includes a control device 20.
  • the control device 20 controls each part of the film bonding system 1.
  • the carry-in conveyor 2 carries the liquid crystal display panel P placed on the carry-in rack 5 to the substrate carry-in position 2a.
  • the first transport device 7 transports the liquid crystal display panel P to the starting position 4a of the intermediate conveyor 4 while holding the liquid crystal display panel P.
  • the first transport device 7 places the liquid crystal display panel P on the intermediate conveyor 4.
  • the intermediate conveyor 4 conveys the liquid crystal display panel P from the initial position 4a to the cleaning device 9.
  • the cleaning device 9 performs, for example, brushing or water washing on the front and back surfaces of the liquid crystal display panel P. Thereafter, the front and back surfaces of the liquid crystal display panel P are drained. Note that the cleaning device 9 is not limited to performing such water-based cleaning, and for example, the front and back surfaces of the liquid crystal display panel P may be subjected to dry cleaning such as static electricity removal or dust collection.
  • the intermediate conveyor 4 conveys the cleaned liquid crystal display panel P from the cleaning device 9 to the first panel delivery position 4c.
  • this 3rd conveying apparatus 15 conveys this liquid crystal display panel P to the 1st film bonding apparatus 10, holding the liquid crystal display panel P which reversed front and back.
  • the 1st film bonding apparatus 10 bonds the 1st optical film F11 cut out from the 1st optical sheet F1 to the surface at the side of the backlight of liquid crystal display panel P. As shown in FIG. After the 1st optical film F11 is bonded, liquid crystal display panel P is again conveyed from the 1st film bonding apparatus 10 to the 1st panel delivery position 4c of the intermediate conveyor 4 by the 3rd conveying apparatus 15. FIG. Is done.
  • the third transport device 15 places the liquid crystal display panel P on the intermediate conveyor 4 with the front and back sides of the liquid crystal display panel P reversed. Further, when the third transport device 15 transports the liquid crystal display panel P, an operation of turning the liquid crystal display panel P by 90 ° is performed. Thereby, as shown by the solid line in FIG. 4, when the liquid crystal display panel P is transported to the first panel delivery position 4c, the long side of the display region P4 is oriented along the transport direction. It becomes.
  • the intermediate conveyor 4 conveys the liquid crystal display panel P on which the first optical film F11 is bonded from the first panel delivery position 4c to the second panel delivery position 4d.
  • the fourth transport device 16 transports the liquid crystal display panel P to the second film bonding device 11 while holding the liquid crystal display panel P.
  • the direction of the liquid crystal display panel P is the direction in which the long side of the same display area P4 as that on the intermediate conveyor 4 is along the transport direction even after being transported to the second film bonding apparatus 11.
  • the 2nd film bonding apparatus 11 bonds the 2nd optical film F12 cut out from the 2nd optical sheet F2 to the surface at the side of the display surface of liquid crystal display panel P. As shown in FIG.
  • the liquid crystal display panel P is conveyed from the second film bonding apparatus 11 to the film peeling apparatus 12 by the fourth conveying device 16 after the second optical film F12 is bonded.
  • the film peeling device 12 peels the surface protective sheet F7 from the second optical film F12 bonded to the liquid crystal display panel P.
  • the liquid crystal display panel P is conveyed again from the film peeling device 12 to the second panel delivery position 4d of the intermediate conveyor 4 by the fourth conveying device 16 after the surface protection sheet F7 is peeled off.
  • the fourth transport device 16 places the liquid crystal display panel P on the intermediate conveyor 4 without inverting the front and back of the liquid crystal display panel P. Further, when the fourth transport device 16 transports the liquid crystal display panel P, the liquid crystal display panel P is not rotated. Therefore, the direction of the liquid crystal display panel P is the direction in which the long side of the display area P4 is along the transport direction even after the liquid crystal display panel P is transported to the second panel delivery position 4d.
  • the intermediate conveyor 4 conveys the liquid crystal display panel P on which the first optical film F11 and the second optical film F12 are bonded from the second panel delivery position 4d to the third panel delivery position 4e.
  • the fifth transport device 17 transports the liquid crystal display panel P to the third film bonding device 13 while holding the liquid crystal display panel P.
  • the direction of the liquid crystal display panel P is the direction in which the long side of the same display region P4 as that on the intermediate conveyor 4 is aligned with the transport direction after being transported to the third film laminating device 13.
  • the 3rd film bonding apparatus 13 affixes the 3rd optical film F13 cut out from the 3rd optical sheet F3 on the surface by the side of the display surface of liquid crystal display panel P on the 2nd optical film F12. Match.
  • the liquid crystal display panel P is transported from the third film pasting device 13 to the third panel delivery position 4e of the intermediate conveyor 4 again by the fifth transport device 17 after the third optical film F13 is pasted. Is done.
  • the fifth transport device 17 places the liquid crystal display panel P on the intermediate conveyor 4 without inverting the front and back of the liquid crystal display panel P. Further, when the fifth transport device 17 transports the liquid crystal display panel P, an operation for turning the liquid crystal display panel P is not involved. Therefore, the direction of the liquid crystal display panel P is the direction in which the long side of the display area P4 is along the transport direction even after the liquid crystal display panel P is transported to the third panel delivery position 4e.
  • the intermediate conveyor 4 conveys the liquid crystal display panel P on which the first optical film F11, the second optical film F12, and the third optical film F13 are bonded from the third panel delivery position 4e to the inspection position 4f. .
  • the inspection device 14 inspects the liquid crystal display panel P. That is, it is inspected whether or not the bonding positions of the first, second and third optical films F11, F12, and F13 with respect to the liquid crystal display panel P are appropriate.
  • Intermediate conveyor 4 conveys liquid crystal display panel P after inspection from inspection position 4f to end position 4b.
  • the liquid crystal display panel P is discharged out of the system by a dispensing means (not shown).
  • the second transport device 8 transports the liquid crystal display panel P to the substrate carry-out position 3a while holding the liquid crystal display panel P.
  • the second transfer device 8 holds the liquid crystal display panel P and places the liquid crystal display panel P on the carry-out rack 6.
  • the carry-out conveyor 3 conveys the liquid crystal display panel P placed on the carry-out rack 6 to the panel conveyance downstream side.
  • the film bonding process by the film bonding system 1 is completed.
  • the liquid crystal display panel P that has completed the film bonding step is sent to the next step.
  • FIG. 6 is a side view showing the configuration of the film bonding apparatus 30.
  • the film bonding apparatus 30 comprises the said 1st, 2nd and 3rd film bonding apparatus 10,11,13. Therefore, in this film bonding apparatus 30, the case where the sheet piece (optical film F1X) cut out from the optical sheet FX is bonded to the liquid crystal display panel P will be described.
  • the upstream side in the conveyance direction of the optical sheet FX is referred to as a sheet conveyance upstream side
  • the downstream side in the conveyance direction of the optical sheet FX is referred to as a sheet conveyance downstream side.
  • the optical sheet FX has a width equivalent to the long side length or the short side length of the display region P4 of the liquid crystal display panel P in the horizontal direction (sheet width direction) orthogonal to the conveying direction.
  • the film bonding apparatus 30 includes a sheet conveyance unit 31, a sheet cutting unit 32, and a film bonding unit 33.
  • the sheet conveying unit 31 conveys the optical sheet FX along its longitudinal direction while unwinding the optical sheet FX from the original roll R1 around which the optical sheet FX is wound.
  • the sheet cutting part 32 cuts out the sheet piece (optical film F1X) of the bonding sheet F8 from the optical sheet FX.
  • the film bonding unit 33 holds the optical film F1X and bonds the optical film F1X to the liquid crystal display panel P.
  • the sheet conveying unit 31 includes an unwinding unit 34 positioned on the upstream side of the sheet conveying, a winding unit 35 positioned on the downstream side of the sheet conveying, and a plurality of units positioned between the unwinding unit 34 and the winding unit 35.
  • Guide rollers 36a, 36b, 36c and a pressing roller 37 are arranged.
  • the unwinding part 34 unwinds the optical sheet FX along the longitudinal direction while holding the original fabric roll R1.
  • the winding unit 35 winds the separation sheet F6 remaining after the optical film F1X is cut out from the optical sheet FX while holding the separation roll R2. That is, the unwinding part 34 and the winding part 35 convey the bonding sheet F8 from the sheet conveying upstream side to the sheet conveying downstream side using the separate sheet F6 as a carrier while being synchronized with each other.
  • the plurality of guide rollers 36a, 36b, 36c wind the separate sheet F6 along a predetermined conveyance path between the unwinding unit 34 and the winding unit 35.
  • the pressing roller 37 sandwiches the separate sheet F6 with the guide roller 36b.
  • a cutting stage (stage) 38 and a cutting machine 39 are arranged in the sheet cutting unit 32.
  • the cutting stage 38 is located between the guide roller 36a and the guide roller 36b, and supports the lower surface of the optical sheet FX.
  • the cutting machine 39 performs a half cut on the optical sheet FX on the cutting stage 38 by the cutting blade 39a.
  • the cutting machine 39 may be configured to use, for example, laser light instead of using the cutting blade 39a.
  • the optical sheet FX is fed out onto the cutting stage 38 by a length corresponding to the long side length of the display area P4.
  • the cutting machine 39 cuts the bonding sheet F8 over the entire width in the sheet width direction while adjusting the cutting depth of the cutting blade 39a with respect to the optical sheet FX while leaving the separate sheet F6.
  • the cut line C is formed in the optical sheet FX over the entire width in the sheet width direction of the bonding sheet F8. And from this optical sheet FX, one sheet piece corresponding to the optical film F1X is cut out.
  • a bonding stage (stage) 40 In the film bonding unit 33, a bonding stage (stage) 40, a bonding roller (bonding member) 41, a movement operation mechanism 42, and a knife edge 43 are arranged.
  • the bonding stage 40 is disposed on the downstream side of the sheet conveyance from the cutting stage 38. On the upper surface of the bonding stage 40, a placement surface 40a on which the liquid crystal display panel P is placed is provided.
  • the mounting surface 40a is provided with a mechanism for holding the liquid crystal display panel P by means such as suction.
  • the placement surface 40a can be moved and operated in two directions orthogonal to each other in a plane parallel to the placement surface 40a. Moreover, in the bonding stage 40, the mounting surface 40a can be rotated around an axis orthogonal to the mounting surface 40a.
  • the bonding roller 41 is disposed above the cutting stage 38 and the bonding stage 40.
  • the movement operation mechanism 42 moves the bonding roller 41 between the cutting stage 38 and the bonding stage 40.
  • the moving operation mechanism 42 moves the bonding roller 41 in the vertical direction with respect to the cutting stage 38 and the bonding stage 40, and moves the bonding roller 41 in the front-rear direction with respect to the cutting stage 38 and the bonding stage 40. Move to.
  • the both ends of the bonding roller 41 are rotatably supported.
  • a rotation drive mechanism 44 that rotationally drives the bonding roller 41 is provided on one end side of the bonding roller 41.
  • a holding surface 41 a that holds the optical film F ⁇ b> 1 ⁇ / b> X is provided on the outer peripheral surface of the bonding roller 41.
  • the holding surface 41a has adhesive force, and the optical film F1X can be repeatedly attached to or peeled from the holding surface 41a.
  • the knife edge 43 is arrange
  • the knife edge 43 is provided on the bonding stage 40 so as to be movable in the front-rear direction. When separating the optical film F1X from the optical sheet FX after half-cutting, the knife edge 43 presses the separate sheet F6 from above over the entire width in the sheet width direction.
  • the film bonding apparatus 30 is provided with a first detection camera 45 that detects an end F8a of the bonding sheet F8 among the optical sheets FX conveyed on the cutting stage 38.
  • the first detection camera 45 is disposed facing a detection hole 38 a provided in the cutting stage 38.
  • the film bonding apparatus 30 is provided with a second detection camera 46 that detects the position of the bonding sheet F8 held on the holding surface 41a of the bonding roller 41.
  • the 2nd detection camera 46 is arrange
  • the film bonding apparatus 30 is provided with a third detection camera 47 that detects the position of the liquid crystal display panel P mounted on the mounting surface 40a of the bonding stage 40.
  • the 3rd detection camera 47 is located above the bonding stage 40, and is arrange
  • FIGS. 7A to 7D and FIGS. 9A to 9B show the operation from the half-cutting of the optical sheet FX to the pasting (transferring) of the optical film F1X to the holding surface 41a of the laminating roller 41 from the half-cut optical sheet FX.
  • FIG. FIG. 8 is a schematic plan view for explaining alignment adjustment between the liquid crystal display panel P and the optical film F1X.
  • 9A and 9B are side views of the film bonding apparatus 30 showing the operation until the optical film F1X is transferred (bonded) to the liquid crystal display panel P.
  • the first detection camera 45 passes through the detection hole 38a through the end F8a of the bonding sheet F8 among the optical sheets FX conveyed on the cutting stage 38. To detect.
  • the detection information of the first detection camera 45 is sent to the control device 20. Based on the detection information of the first detection camera 45, the control device 20 determines that the bonding sheet F8 on the separate sheet F6 has been fed out by a predetermined length, and transports the optical sheet FX by the sheet transport unit 31. Is temporarily stopped.
  • the cutting machine 39 performs a half cut on the optical sheet FX on the cutting stage 38. Thereby, one sheet piece (henceforth optical film F1X) corresponding to the optical film F1X is cut out from the bonding sheet F8 leaving the separate sheet F6.
  • the cutting machine 39 is movable in the conveyance direction of the optical sheet FX. As the cutting machine 39 moves, the distance between the detection position of the first detection camera 45 and the cutting position of the cutting machine 39 is changed. Thereby, the length of the optical film F1X cut out from the optical sheet FX can be adjusted.
  • the cutting position of the cutting machine 39 is corrected so as to correct this positional deviation. Can be adjusted. Moreover, it can respond also to the cutting of the sheet piece from which length differs.
  • the moving operation mechanism 42 lowers the laminating roller 41 that has been waiting above the cutting stage 38. Thereby, it will be in the state which the optical film F1X cut out from the optical sheet FX and the holding surface 41a of the bonding roller 41 can contact.
  • the movement operation mechanism 42 moves the laminating roller 41 from the sheet conveyance downstream side (right side in FIG. 7B) toward the sheet conveyance upstream side (left side in FIG. 7B).
  • the optical film F1X is bonded (transferred) to the holding surface 41a of the bonding roller 41 while the bonding roller 41 rotates on the optical film F1X.
  • the winding unit 35 is rotated in a direction opposite to the direction in which the separate sheet F6 is wound (clockwise in FIG. 7B). Accordingly, the separate sheet F6 is sent out to the upstream side of the sheet conveyance. At this time, the separate sheet F6 is bent upward while causing the slack F6a.
  • the knife edge 43 in the retracted position is moved from the sheet conveying downstream side toward the sheet conveying upstream side. Accordingly, the separate sheet F6 comes into contact with the knife edge 43.
  • the optical film F1X is separated from the separate sheet F6 and is held (transferred) on the holding surface 41a.
  • the slackness F6a gradually decreases. Then, when the slack F6a disappears, the rotation of the winding unit 35 is stopped.
  • the moving operation mechanism 42 raises the bonding roller 41, and the bonding roller 41 is bonded. Move to above stage 40.
  • the knife edge 43 moves from the upstream side of the sheet conveyance toward the downstream side of the sheet conveyance and stops at the standby position.
  • the second detection camera 46 detects the start end position Ep1 and the end position Ep2 in the rotation direction of the optical film F1X held on the holding surface 41a while the rotation driving mechanism 44 rotates the bonding roller 41.
  • the start position Ep1 corresponds to one corner along one side in the longitudinal direction of the optical film F1X
  • the end position Ep2 corresponds to the other corner along one side in the longitudinal direction of the optical film F1X.
  • the detection information of the second detection camera 46 is sent to the control device 20.
  • the control device 20 calculates the distance Lc from the start end position Ep1 to the end position Ep2 based on the detection information from the second detection camera 46.
  • This distance Lc corresponds to the length (long side length) of one side in the longitudinal direction of the optical film F1X.
  • control device 20 calculates the distance Le in the sheet width direction between the start end position Ep1 and the end position Ep2 based on the detection information from the second detection camera 46.
  • This distance Le corresponds to a shift amount in the sheet width direction between one corner portion along one side in the longitudinal direction of the optical film F1X and the other corner portion along one side in the longitudinal direction of the optical film F1X.
  • the correction angle ⁇ corresponds to the inclination of the optical film F1X held on the holding surface 41a with respect to the rotation direction of the laminating roller 41.
  • the third detection camera 47 detects the alignment mark Pm provided on the liquid crystal display panel P.
  • the alignment mark Pm provided on the liquid crystal display panel P.
  • three alignment marks Pm1, Pm2, and Pm3 provided at three corners of the liquid crystal display panel P are detected.
  • the detection information of the third detection camera 47 is sent to the control device 20.
  • the control device 20 specifies the position of the liquid crystal display panel P placed on the placement surface 40 a based on the detection information from the third detection camera 47.
  • the liquid crystal display panel P and the optical film F1X are aligned (alignment adjustment).
  • the bonding stage 40 is rotated based on the correction angle ⁇ . Thereby, the direction of the liquid crystal display panel P is adjusted according to the inclination of the optical film F1X. Moreover, based on the detection information from the 2nd detection camera 46 and the 3rd detection camera 47, while moving the bonding stage 40, the bonding roller 41 is rotated. Thereby, the start end position Ep1 of the optical film F1X and the bonding start position Ep1 ′ of the liquid crystal display panel P coincide with each other at the start of bonding, and the end position Ep2 of the optical film F1X and the liquid crystal at the end of bonding.
  • seat F8 is performed so that bonding completion position Ep2 'of display panel P may correspond.
  • the alignment adjustment between the liquid crystal display panel P and the optical film F1X is not necessarily limited to such a method, and another method may be used.
  • the optical film F1X held on the holding surface 41a of the bonding roller 41 is transferred (bonded) to the liquid crystal display panel P.
  • the movement operation mechanism 42 lowers the bonding roller 41 after alignment adjustment. Thereby, the liquid crystal display panel P placed on the placement surface 40a and the optical film F1X held on the holding surface 41a can be brought into contact with each other.
  • the moving operation mechanism 42 moves the laminating roller 41 from the upstream side of sheet conveyance (right side in FIGS. 9A and 9B) toward the downstream side of sheet conveyance (left side in FIGS. 9A and 9B). Accordingly, the optical film F1X held on the holding surface 41a is transferred (bonded) to the liquid crystal display panel P while the bonding roller 41 rotates on the liquid crystal display panel P. That is, the optical film F1X is peeled from the holding surface 41a and bonded to the liquid crystal display panel P by being pressed against the liquid crystal display panel P.
  • the moving operation mechanism 42 raises the bonding roller 41 and moves the bonding roller 41 to above the cutting stage 38. .
  • movement which bonds the optical film F1X cut out from the above optical sheets FX to the liquid crystal display panel P can be performed repeatedly.
  • FIG. 10 is a plan view showing the third optical film F13 and the display region P4 of the liquid crystal display panel P.
  • FIG. 11 is a plan view showing a state in which the third optical film F13 is bonded to the display region P4 of the liquid crystal display panel P.
  • a pixel R corresponding to red, a pixel G corresponding to green, and a pixel B corresponding to blue are periodically arranged in the left-right direction.
  • a plurality of pixel rows L1 and L2 arranged side by side are arranged.
  • the plurality of pixel columns L1 and L2 are configured by alternately arranging a pixel column L1 that forms an image corresponding to the left eye and a pixel column L2 that forms an image corresponding to the right eye in the vertical direction. .
  • the third optical film F13 has a plurality of polarization pattern rows PA1, PA2 corresponding to the plurality of pixel rows L1, L2 of the liquid crystal display panel P.
  • the plurality of polarization pattern rows PA1 and PA2 are configured by alternately arranging a left-eye polarization pattern row PA1 and a right-eye polarization pattern row PA2 having different polarization directions.
  • the left-eye polarization pattern array PA1 is provided corresponding to the pixel array L1 that forms an image corresponding to the left eye.
  • the right-eye polarization pattern array PA2 is provided corresponding to the pixel array L2 that forms an image corresponding to the right eye.
  • column PA1, PA2 may be located between each of several pixel row
  • the optical film F13 is bonded to the liquid crystal display panel P.
  • the boundary line K deviates from between the pixel rows L1 and L2, it causes crosstalk such as mixing the left eye image with the left eye image. Therefore, it is necessary to bond the third optical film F13 to the liquid crystal display panel P with high accuracy so that the boundary line K is located between the pixel columns L1 and L2.
  • symbol pi1 in FIG. 11 represents the distance between pitches (distance between the boundary lines K) of pixel row
  • a symbol pi2 in FIG. 11 represents the distance between the pixel columns L1 and L2 (the width of the black matrix).
  • a symbol Gap in FIG. 11 represents a distance (gap width) between the boundary line K and the pixel columns L1 and L2. For example, when the width pi2 of the black matrix is 86 ⁇ m, the gap width Gap is ideally 43 ⁇ m, but considering the fluctuation of the boundary line K and the like, the target value is about 40 to 50 ⁇ m.
  • FIG. 12 is a schematic diagram illustrating the configuration of the position detection mechanism 70.
  • the film bonding apparatus 30 is provided with a position detection mechanism 70 that detects the position of the alignment mark Pm provided on the liquid crystal display panel P as shown in FIG.
  • the position detection mechanism 70 includes an illumination unit 71, an imaging unit 72, and an image processing unit 73.
  • the illumination unit 71 irradiates the liquid crystal display panel P on the placement surface 40a with illumination light using a light source such as a red light emitting diode (LED).
  • a light source such as a red light emitting diode (LED).
  • the illumination light is applied to the corners of the liquid crystal display panel P provided with the alignment marks Pm in the frame part FR surrounding the display area P4.
  • the imaging unit 72 captures an image at a position irradiated with illumination light using an imaging element such as a CCD camera.
  • the third detection camera 47 corresponds to the imaging unit 72.
  • the image processing unit 73 includes a computer or the like that is electrically connected to the imaging unit 72, processes the image captured by the imaging unit 72, and specifies the position of the alignment mark Pm.
  • the control device 20 corresponds to the image processing unit 73.
  • a low reflection portion 74 is provided at a position facing the alignment mark Pm on the mounting surface 40a.
  • the low reflection portion 74 is provided with a low reflection member 75 that reduces the reflectance of the illumination light.
  • the low reflection member 75 is located on the placement surface 40a and has a thickness smaller than the gap S formed between the placement surface 40a and the liquid crystal display panel P.
  • This gap S is between the frame portion FR of the liquid crystal display panel P and the mounting surface 40a according to the thickness of the first optical film F11 bonded to the lower surface (backlight side) of the liquid crystal display panel P. It is provided over.
  • the gap S is about 0.05 to 0.5 mm, and the low reflection member 75 only needs to have a thickness smaller than the gap S.
  • an adhesive resin tape that can be peeled off (for example, trade name: Super Clean Tape, manufactured by Tanimura Co., Ltd.) is used as the low reflection member 75, and the mounting surface 40a is made of, for example, aluminum. It consists of a metal surface with electroless Ni plating on the surface of the base material. Moreover, the thickness of the low reflection member 75 was 0.11 mm, and the clearance gap S was 0.3 mm.
  • the reflectance of the illumination light is relatively lower than the region where the low reflection member 75 is not arranged. Thereby, the reflectance in the area
  • the alignment mark Pm is located in a region overlapping the low reflection portion 74 in plan view.
  • the contrast of the alignment mark Pm in the image picked up by the image pickup unit 72 can be increased by providing such a low reflection portion 74 at a position facing the alignment mark Pm on the placement surface 40a. . Thereby, it is possible to prevent the position detection accuracy of the alignment mark Pm from being lowered due to a processing flaw or the like generated on the surface of the mounting surface 40a.
  • Table 1 the measurement results when there is no low reflection portion 74 are shown on the left side in Table 1, and the measurement results when there is a low reflection portion 74 are shown on the right side in Table 1.
  • the numerical values in Table 1 represent the distance or angle from the reference point when the imaging unit 72 images the alignment mark Pm.
  • FIG. 13 shows an image of the alignment mark Pm imaged by the imaging unit 72 when the low reflection unit 74 is not provided.
  • FIG. 14 shows an image of the alignment mark Pm imaged by the imaging unit 72 when the low reflection unit 74 is present.
  • the optical film F1X with respect to the liquid crystal display panel P can be adjusted. It is possible to increase the bonding accuracy.
  • the optical film F1X with respect to the liquid crystal display panel P is used.
  • the bonding accuracy it is possible to produce an optical display device with excellent display quality.
  • the low reflection member 75 may be made of a material that lowers the reflectance of the illumination light, and the form thereof can be appropriately changed.
  • a tape-like or sheet-like thing can be affixed on the placement surface 40a, or a thin film or thin plate-like thing can be placed on the placement surface 40a.
  • the low reflection portion 74 is not necessarily limited to the configuration in which the low reflection member 75 is disposed.
  • the low reflection portion 74 may be a low reflection surface obtained by performing processing such as low reflection processing on the surface of the mounting surface 40a.
  • the low reflection portion 74 may be configured to reduce the reflectance of illumination light in a region overlapping with these in a plan view by providing a recess or a hole on the placement surface 40a.
  • the suction hole for holding the liquid crystal display panel P by means such as adsorption described above can be used as the low reflection portion 74.
  • the structure using the rotatable bonding roller 41 was demonstrated as a bonding member, about a bonding member, it is not necessarily limited to such a structure.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention concerne un dispositif de pelliculage comprenant : un étage (40) pourvu d'une surface de placement (40a) sur laquelle est placé un panneau (P) ; et un mécanisme de détection d'emplacements (70) destiné à détecter des emplacements de marques d'alignement (Pm) formées sur le panneau (P). Le mécanisme de détection d'emplacements (70) comprend : des unités d'éclairage (71) qui irradient le panneau (P) sur la surface de placement (40a) au moyen d'une lumière d'éclairage ; des unités de capture d'images (72) qui capture des images d'emplacements irradiés par la lumière d'éclairage ; et une unité de traitement d'images (73) qui traite les images afin de détecter les emplacements des marques d'alignement (Pm). Des parties à faible réflexion (74) qui réduisent le facteur de réflexion de la lumière d'éclairage sont formées à des emplacements de la surface de placement (40a) qui font face aux marques d'alignement (Pm).
PCT/JP2014/072301 2013-08-29 2014-08-26 Dispositif de pelliculage, système et procédé de production de dispositif d'affichage optique WO2015029998A1 (fr)

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JP2013-178232 2013-08-29
JP2013178232A JP2015045820A (ja) 2013-08-29 2013-08-29 フィルム貼合装置、光学表示デバイスの生産システム及び光学表示デバイスの生産方法

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CN105044942B (zh) * 2015-08-25 2018-03-06 武汉华星光电技术有限公司 液晶显示面板的对位检查设备及对位检查方法
JP6203234B2 (ja) * 2015-12-04 2017-09-27 日東電工株式会社 光学的表示装置を連続的に製造する装置及び方法
JP6379150B2 (ja) 2016-10-18 2018-08-22 日東電工株式会社 光学的表示ユニットの製造装置及び製造方法
WO2018074235A1 (fr) * 2016-10-18 2018-04-26 日東電工株式会社 Dispositif de fabrication et procédé de fabrication d'unité d'affichage optique

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JPH0290A (ja) * 1987-09-29 1990-01-05 Tokyo Electron Ltd 液晶表示体プローブ装置及び液晶表示体の位置合わせ方法
JPH08146371A (ja) * 1994-11-18 1996-06-07 Sony Corp 液晶表示装置およびその製造方法
JP2010072183A (ja) * 2008-09-17 2010-04-02 Hitachi High-Technologies Corp 光学フィルム貼り付け装置及び表示用パネルの製造方法
JP2010262271A (ja) * 2009-04-08 2010-11-18 Shibaura Mechatronics Corp 基板貼り合わせ装置及び基板貼り合わせ方法
JP2010286615A (ja) * 2009-06-10 2010-12-24 Sony Corp 光学部品の製造方法、光学部品、表示装置の製造方法および表示装置
WO2012111464A1 (fr) * 2011-02-16 2012-08-23 日本ゼオン株式会社 Procédé de fabrication d'un dispositif d'affichage à cristaux liquides
JP2013123915A (ja) * 2011-12-16 2013-06-24 Sumitomo Chemical Co Ltd フィルム材の貼合方法及びフィルム材の貼合装置
JP2013140257A (ja) * 2012-01-05 2013-07-18 Toppan Printing Co Ltd シート貼合装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0290A (ja) * 1987-09-29 1990-01-05 Tokyo Electron Ltd 液晶表示体プローブ装置及び液晶表示体の位置合わせ方法
JPH08146371A (ja) * 1994-11-18 1996-06-07 Sony Corp 液晶表示装置およびその製造方法
JP2010072183A (ja) * 2008-09-17 2010-04-02 Hitachi High-Technologies Corp 光学フィルム貼り付け装置及び表示用パネルの製造方法
JP2010262271A (ja) * 2009-04-08 2010-11-18 Shibaura Mechatronics Corp 基板貼り合わせ装置及び基板貼り合わせ方法
JP2010286615A (ja) * 2009-06-10 2010-12-24 Sony Corp 光学部品の製造方法、光学部品、表示装置の製造方法および表示装置
WO2012111464A1 (fr) * 2011-02-16 2012-08-23 日本ゼオン株式会社 Procédé de fabrication d'un dispositif d'affichage à cristaux liquides
JP2013123915A (ja) * 2011-12-16 2013-06-24 Sumitomo Chemical Co Ltd フィルム材の貼合方法及びフィルム材の貼合装置
JP2013140257A (ja) * 2012-01-05 2013-07-18 Toppan Printing Co Ltd シート貼合装置

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