JP2012173617A - Recovery device, lamination system, and recovery method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively recover drawbacks of an optical member.SOLUTION: A recovery device 2 includes: a transfer part 50 for transferring a sheet piece configured by separably laminating an optical member and a separator; a determination part 10 for determining whether the optical member of the sheet piece transferred by the transfer part 50 is a good optical member containing no drawbacks or a poor optical member (a poor lamination sheet F12) containing drawbacks; a moving part 21 for moving a knife edge 20 that separates a separator F3 from the optical member by contacting the sheet piece to a position not contacting this sheet piece when the optical member of the sheet piece transferred by the transfer part 50 is determined to be a good optical member by the determination part 10; and a recovery part 5 for recovering the sheet piece transferred by the transfer part 50 without contacting the knife edge 20.

Description

  The present invention relates to a recovery device, a bonding system, and a recovery method.

  Conventionally, as a device used for manufacturing a liquid crystal display device or the like, a recovery device that removes a portion including a defect of a polarizing plate is known (see, for example, Patent Document 1). The recovery device of Patent Literature 1 can transport a long polarizing plate protected by a separator in the longitudinal direction thereof, inspect the defects of the polarizing plate during the transportation, and recover the detected defects. Specifically, the above-described recovery device can cut the polarizing plate including the defect, leaving the separator in the thickness direction of the polarizing plate based on the inspection result. Moreover, said collection | recovery apparatus can transfer the cut | disconnected polarizing plate to the removal film different from a separator, and can collect | recover (remove) a fault with a removal film.

JP-A-57-52017

  Since the above collection device collects the removal film different from the separator together with the defects, the removal film becomes a waste material every time the defects are removed. In addition, since the above-described collection device requires a device for collecting the removal film, in addition to the device for collecting the separator, the configuration of the device may be complicated. This invention is made | formed in view of said situation, Comprising: It aims at providing the collection | recovery apparatus which can collect | recover the optical member containing a defect effectively, a bonding system, and the collection | recovery method.

  The recovery device according to the first aspect of the present invention has a drawback in that the transfer member that transfers the sheet piece in which the optical member and the separator are detachably stacked, and the optical member of the sheet piece that is transferred by the transfer unit. A determination unit that determines whether the optical member is a non-defective optical member or a defective optical member that includes defects, and a knife edge that contacts the sheet piece and separates the separator from the optical member is transferred by the transfer unit. When the optical member of the sheet piece is determined to be the non-defective optical member by the determination unit, the moving unit moves to a position that does not contact the sheet piece, and is transferred by the transfer unit without contacting the knife edge. And a collection unit that collects the sheet pieces.

  In the collection device according to the first aspect, the transfer unit includes a first roller and a second roller that come into contact with the separator of the sheet pieces, and the moving unit moves from the first roller to the second roller. The knife edge can be moved toward the sheet piece from the same side as the separator with respect to the optical member of the sheet piece to be transferred, and the sheet piece transferred to the transfer unit is The knife edge may be moved to a position where it does not come into contact with the separator spanned between the first roller and the second roller when it is determined as a good optical member.

  The bonding system according to the second aspect of the present invention is an object to be bonded to the recovery device according to the first aspect and the optical member that is determined as the non-defective optical member by the determination unit and separated from the separator by the knife edge. A laminating roller for laminating the object.

  The bonding system of the second aspect may include a detection device that detects a defect of the optical member.

  The bonding system according to the second aspect includes a cutting device that cuts an optical sheet in which an optical member and a separator are separated from each other so as to be separated from each other, leaving the separator in the thickness direction, thereby forming the sheet piece. Also good.

  In the recovery method of the third aspect of the present invention, the sheet piece in which the optical member and the separator are detachably stacked is transferred, and whether the optical member of the sheet piece is a non-defective optical member that does not include a defect. Determining whether the optical member is a defective optical member including a defect; and a knife edge that contacts the sheet piece to separate the separator from the optical member, and the optical member of the transferred sheet piece is the defective optical member And moving to a position where it does not contact the sheet piece, and collecting the sheet piece transferred without contacting the knife edge.

  ADVANTAGE OF THE INVENTION According to this invention, the collection | recovery apparatus, bonding system, and collection | recovery method which can collect | recover the optical member containing a defect effectively can be provided.

It is a figure which shows schematic structure of the bonding system of this embodiment. It is a top view which shows an example of a liquid crystal panel. It is sectional drawing which shows an example of an optical sheet. It is a figure which shows operation | movement of the cutting device of this embodiment. It is a figure which shows operation | movement of the cutting device of this embodiment. It is a figure which shows the bonding apparatus and collection | recovery apparatus in the bonding process of this embodiment. It is a figure which shows the bonding apparatus and collection | recovery apparatus in the fault collection process of this embodiment. It is a figure which shows the processing flow of the collection | recovery method of this embodiment. In this embodiment, it is a figure which shows the processing flow when switching a bonding process and a fault recovery process.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments.

  Drawing 1 is a figure showing the schematic structure of the pasting system of this embodiment. A bonding system 1 shown in FIG. 1 includes a recovery device 2 of the present embodiment. The bonding system 1 can bond optical members, such as a polarizing plate, an antireflection film, and a light-diffusion film, to bonding objects, such as a liquid crystal panel and an organic EL panel, for example in bonding area A1. Thereby, the bonding system 1 can manufacture the device containing the bonding target object and the optical member. The bonding system 1 may be a part or all of a manufacturing system that manufactures the device.

  The recovery device 2 of the present embodiment can remove and recover the part of the optical member including the defect from the optical sheet including the optical member from the path toward the bonding area A1, that is, the bonding system 1 is The optical member which does not contain a fault can be bonded to a bonding target object. Prior to detailed description of the bonding system 1, first, a configuration example of an optical sheet and a configuration example of a liquid crystal panel will be described.

  FIG. 2 is a plan view illustrating a configuration example of the liquid crystal panel. FIG. 2 shows a liquid crystal panel viewed in plan from the thickness direction of the liquid crystal layer. A liquid crystal panel P shown in FIG. 2 includes a first substrate P1, a second substrate P2 disposed to face the first substrate P1, and a liquid crystal layer sealed between the first substrate P1 and the second substrate P2. P3. In the liquid crystal panel P, a range that fits inside the outer periphery of the liquid crystal layer P3 in plan view is a display region P4.

  FIG. 3 is a cross-sectional view illustrating a configuration example of the optical sheet. The optical sheet of this example has a long band shape, and a cross section perpendicular to the longitudinal direction is shown in FIG. In the following description, the longitudinal direction of the optical sheet may be simply referred to as the longitudinal direction.

  The optical sheet F shown in FIG. 3 includes a film-shaped optical member F1, an adhesive layer F2 provided on one surface of the optical member F1, and a separator that is detachably stacked with the optical member F1 through the adhesive layer F2. F3 and a surface protective film F4 provided on the other surface of the optical member F1. The optical member F1 of the optical sheet F of this example functions as a polarizing plate, and is bonded over the entire display area P4 of the liquid crystal panel P and its peripheral area.

  The optical member F1 is bonded to the object to be bonded via the adhesive layer F2 in a state where the separator F3 is separated from the adhesive layer F2 while leaving the adhesive layer F2 on the surface of the optical member F1. The separator F3 protects the adhesive layer F2 and the optical member F1 until it is separated from the adhesive layer F2. The surface protection film F4 is bonded to the bonding object together with the optical member F1, and is disposed on the opposite side of the bonding object with respect to the optical member F1. The surface protective film F4 of this example is separated from the optical member F1 at an appropriately selected timing. The surface protective film F4 protects the optical member F1 until it is separated from the optical member F1.

  The optical member F1 may not include the surface protection film F4. Further, the surface protective film F4 may not be separated from the optical member F1. In the following description, a portion obtained by removing the separator F3 from the optical sheet F may be referred to as a bonding sheet F5.

  The optical member F1 includes a polarizer F6, a first film F7 bonded to one surface of the polarizer F6 with an adhesive or the like, and a second film F8 bonded to the other surface of the polarizer F6 with an adhesive or the like. And have. The first film F7 and the second film F8 are, for example, protective films that protect the polarizer. Specific examples of the protective film include a triacetyl cellulose film and a PET film.

  Note that the optical member F1 may have a single-layer structure including one optical layer, or a stacked structure in which a plurality of optical layers are stacked on each other. The optical layer may be a retardation film or a brightness enhancement film in addition to the polarizer F6. At least one of the first film F7 and the second film F8 may be subjected to a surface treatment that provides an effect such as a hard coat treatment for protecting the outermost surface of the liquid crystal display element or an antiglare treatment including an antiglare treatment. Further, at least one of the first film F7 and the second film F8 may not be provided. For example, the optical sheet F may have a structure in which the first film F7 is omitted and the separator F3 is bonded to one surface of the optical member F1 via the adhesive layer F2.

Next, the bonding system 1 of this embodiment is demonstrated in detail.
The bonding system 1 shown in FIG. 1 detects a defect of the optical member F1 while conveying the optical sheet F, and forms cut lines at a plurality of positions in the longitudinal direction by half-cutting the optical sheet F. A plurality of sheet pieces partitioned in the longitudinal direction by the cut lines can be formed. The bonding system 1 pastes a non-defective sheet piece bonding sheet in which the optical member F1 does not include a defect among the plurality of sheet pieces and each liquid crystal panel P conveyed from the upstream side of the liquid crystal display element production line. Bonding can be performed at the joint area A1. The bonding system 1 can collect the defective sheet piece in which the optical member F1 has a defect among the plurality of sheet pieces without bonding the bonding sheet to the liquid crystal panel P.

  In the present embodiment, the liquid crystal panel P is bonded to the optical member F1 that is transported in parallel with the liquid crystal panel P while being transported in a direction parallel to the long side of the display region P4. The dimension in the width direction orthogonal to the longitudinal direction of the optical sheet is, for example, the length of the short side of the display area P4 of the liquid crystal panel P and the outer dimension of the liquid crystal panel P in the direction parallel to the short side of the display area P4. Set to: The length in the longitudinal direction of the sheet piece to be bonded to the liquid crystal panel (hereinafter referred to as unit length) is, for example, not less than the length of the long side of the display area P4 of the liquid crystal panel P, and the long side of the display area P4. It is set below the outer dimension of the liquid crystal panel P in the parallel direction.

  In addition, the bonding system 1 may be a mode in which the liquid crystal panel P is transported in a direction parallel to the short side of the display region P4 and is bonded to the optical member F1 transported in parallel with the liquid crystal panel P. In this aspect, the dimension in the width direction of the optical sheet F and the unit length are appropriately changed according to the dimension of the short side and the dimension of the long side of the display region P4 of the liquid crystal panel P.

  The bonding system 1 includes a transport device 3 that can feed out the optical sheet F from the roll R around which the optical sheet F is wound, and transport at least the separator F3 of the optical sheet F in the longitudinal direction. The conveyance apparatus 3 conveys the bonding sheet | seat F5 with the separator F3 by using the separator F3 as a carrier.

  The conveyance device 3 includes an optical sheet supply unit 4 corresponding to the start point of the conveyance path of the separator F3 (hereinafter simply referred to as a conveyance path), a winder 5 corresponding to the end point of the conveyance path, and the optical sheet supply unit 4 and the winding. A plurality of rollers forming a conveying path of the separator F3 between the take-up machine 5 and a length measuring device 6 provided on at least one of the plurality of rollers. In the following description, with respect to an arbitrary position on the transport path, the side approaching the start point (optical sheet supply unit 4) of the transport path is the upstream side, and the side approaching the end point (winder 5) of the transport path is the downstream side. That's it.

  The bonding system 1 according to the present embodiment includes a plurality of devices that are arranged on the conveyance path and perform processing on the optical sheet F being conveyed. The bonding system 1 is disposed downstream of the conveyance path from the optical sheet supply unit 4 to detect a defect of the optical member F1, and the optical sheet F is disposed downstream of the conveyance path from the detection apparatus 7. The cutting device 8 that performs half-cutting on the sheet, the recovery device 2 that is disposed downstream of the cutting device 8 relative to the cutting device 8, the bonding device 9 that is disposed in the bonding area A1, and the respective parts of the bonding system 1 are controlled. And a control device 10 for performing.

  The optical sheet supply unit 4 of the transport device 3 is configured by a feeding machine that feeds the optical sheet F from the roll R to the transport path. The optical sheet supply unit 4 can hold and rotate the roll R. The winder 5 collects only the separator F3 when the optical member F1 is separated from the separator F3. The winder 5 collects the bonding sheet F5 together with the separator F3 when the bonding sheet F5 is not separated from the separator F3.

  The plurality of rollers form a transport path by spanning at least the separator F3 of the optical sheet F. The plurality of rollers are configured by rollers selected from a roller that changes the traveling direction of the optical sheet F being conveyed, a roller that can adjust the tension of the optical sheet F being conveyed, and the like.

  The length measuring device 6 can measure the distance (conveyance distance) by which the optical sheet F is conveyed based on the rotation angle of the roller to which the length measuring device 6 is attached and the length of the outer periphery. The measurement result of the length measuring device 6 is output to the control device 10. Based on the measurement result of the length measuring device 6, the control device 10 has each point in the longitudinal direction of the optical sheet F at any position on the transport path at any time while the optical sheet F is transported. The sheet position information indicating whether or not the sheet is present is generated.

  In addition, the structure of the conveying apparatus 3 can be suitably changed so that an optical sheet can be conveyed by a predetermined conveyance path | route. Further, the length measuring device 6 may generate the above-described sheet position information based on the measurement result, and may be able to output the generated sheet position information to the control device 10. The length measuring device 6 may generate sheet position information, and the control device 10 may not generate sheet position information.

  The detection device 7 can detect a defect inherent in the optical member F1 of the optical sheet F being conveyed. The detection device 7 of the present embodiment detects defects of the optical member F1 by executing inspection processing such as reflection inspection, transmission inspection, oblique transmission inspection, and crossed Nicol transmission inspection on the optical sheet F being conveyed. can do.

  The detection device 7 has a lighting unit 11 that can irradiate light to the optical sheet F, and light that has been irradiated from the lighting unit 11 and passed through the optical member F1 (either or both of reflection and transmission). And a photodetector 12 capable of detecting a change due to presence or absence. The disadvantage of the optical member F1 is, for example, a portion where a foreign substance consisting of at least one of solid, liquid, and gas is present inside the optical member F1, a portion where irregularities and scratches are present on the surface of the optical member F1, and the optical member F1. This is a portion that becomes a bright spot due to the distortion of the material or the deviation of material.

  The illumination unit 11 can irradiate light whose light intensity, wavelength, polarization state, and the like are adjusted according to the type of inspection performed by the detection device 7 as described above. The photodetector 12 of the present embodiment is configured by an image sensor such as a CCD, and can image the portion of the optical sheet F irradiated with light by the illumination unit 11. The detection result (imaging result) of the photodetector 12 is output to the control device 10. The control device 10 can analyze the image captured by the photodetector 12 and determine the presence or absence of a defect. When determining that the optical member F1 has a defect, the control device 10 refers to the measurement result of the length measuring device 6 and generates defect position information indicating the position of the defect on the optical sheet F.

  In addition, the structure of the detection apparatus 7 can be suitably changed so that the fault of the optical member F1 can be detected. For example, the detection device 7 may include a determination unit that determines the presence / absence of a defect based on the detection result of the photodetector 12 and may output the determination result of the determination unit to the control device 10. The detection device 7 may output the determination result of the determination unit to the control device 10, and the control device 10 may not determine whether there is a defect. Moreover, the code | symbol which shows the position of a fault may be formed on the optical sheet, and the structure which detects the fault of an optical member may be sufficient as the detection apparatus 7 by reading the code | symbol which shows the position of a fault. For example, such an optical sheet is inspected for defects before being conveyed to the detection device 7, and a code indicating the position of the defect is formed on the optical sheet based on the inspection result. It is.

  4 and 5 are diagrams illustrating the operation of the cutting apparatus according to the present embodiment. The cutting device 8 can cut a part in the thickness direction of the optical sheet F over the entire width in the width direction orthogonal to the longitudinal direction of the optical sheet F (sometimes referred to as half cut). The cutting device 8 according to the present embodiment includes a cutting blade 13 that is provided so as to be capable of moving back and forth from the side opposite to the separator F3 with respect to the optical member F1, and that can cut the optical member F1. And a drive unit 14 capable of moving back and forth toward the optical sheet F.

  The drive unit 14 can advance the cutting blade 13 to the vicinity of the interface between the adhesive layer F2 and the separator F3 so that the separator F3 having a thickness that does not break the separator F3 due to the tension acting on the separator F3 during conveyance remains. . When the drive unit 14 advances the cutting blade 13, the optical member F <b> 1 and the surface protection film F <b> 4 are cut in the thickness direction of the optical sheet F, and a score line is formed across the entire width of the optical sheet F. The cut lines are formed at a plurality of positions in the longitudinal direction of the optical sheet F. The optical sheet F is partitioned in the longitudinal direction by a plurality of cutting lines, and each of the sections sandwiched between a pair of cutting lines adjacent in the longitudinal direction is one sheet piece. The configuration of the cutting device 8 can be changed as appropriate so that the dimension (depth) of the cutting line in the thickness direction of the optical sheet F and the position of the cutting line in the longitudinal direction can be controlled.

  The control device 10 refers to the above-described defect position information, and refers to a section corresponding to the unit length in the longitudinal direction of the optical member F1 from the first cut line formed by the cutting device 8 (hereinafter, the next sheet piece). It is determined whether or not there is a defect of the optical member F1 in the section). The control device 10 determines the position of the cut line to be formed next according to whether or not there is a defect in the section of the next sheet piece, and indicates the formation position of the cut line on the optical sheet F. Generate cut line position information.

  As shown in FIG. 4, when the control device 10 determines that there is no defect in the section of the next sheet piece, the control device 10 next starts from the previously formed cut line (hereinafter referred to as the first cut line L1). The formation position of the second cut line L2 is determined so that the distance on the optical sheet F to the cut line to be formed (hereinafter referred to as the second cut line L2) is the unit length. The control device 10 is driven so that the cutting device 8 forms the second cut line L2 at the timing when the optical sheet F is conveyed by the unit length from the position where the first cut line L1 is formed. The unit 14 is controlled.

  The optical sheet F in the section from the first cut line L1 to the second cut line L2 includes a separator F3 and a non-defective bonding sheet F9 including an optical member F1 (non-defective optical member) that does not include a defect. It becomes a non-defective sheet piece F10.

  When it is determined that the defect F11 of the optical member F1 is present in the section of the next sheet piece, the control device 10 is a cut line (hereinafter referred to as a third cut line L3) upstream of the defect F11 in the conveyance path. ) Is determined. The control device 10 controls the drive unit 14 so that the cutting device 8 forms the third cut line L3 on the upstream side of the conveyance path from the defect F11.

  As shown in FIG. 5, the optical sheet F in the section from the first cut line L1 to the third cut line L3 includes a separator F3 and an optical member F1 (defective product optical member) including a defect F11. The defective sheet piece F13 having the defective product bonding sheet F12 is obtained.

  The bonding system 1 of this embodiment is provided with the panel conveyance apparatus 15 which can convey liquid crystal panel P bonded with the non-defective bonding sheet | seat F9 to bonding area A1. The panel transport device 15 includes a panel holding unit 16 capable of holding the liquid crystal panel P, and a panel moving unit capable of moving the panel holding unit 16 from the carry-in area where the liquid crystal panel P is carried into the bonding system 1 to the bonding area A1. 17 and a conveyor 18 capable of sending the liquid crystal panel P in a predetermined direction in the bonding area A1. In the present embodiment, the operation timing and the like of each unit of the panel transport device 15 are controlled by the control device 10.

  The panel holding unit 16 is controlled by the control device 10 and detachably holds the liquid crystal panel P conveyed to the carry-in area from the upstream side of the liquid crystal display element production line by a conveyor or the like. The panel moving unit 17 can move the panel holding unit 16 in the vertical direction and the horizontal direction with respect to the conveyor 18. The panel moving unit 17 moves the panel holding unit 16 from the carry-in area to the bonding area A1 while the liquid crystal panel P is held by the panel holding unit 16, and substantially moves the liquid crystal panel P to the bonding area A1. Can move.

  The panel holding | maintenance part 16 is controlled by the control apparatus 10, can cancel | release adsorption | suction of liquid crystal panel P in bonding area A1, and can deliver liquid crystal panel P to the conveyor 18. FIG. The conveyer 18 is bonded to the bonding area A1 so that the liquid crystal panel P conveyed to the bonding area A1 and the non-defective bonding sheet F9 conveyed to the bonding area A1 and bonded to the liquid crystal panel P are aligned with each other. 9 can be supplied with a liquid crystal panel P. The panel moving unit 17 and the conveyor 18 are controlled by the control device 10 so that the liquid crystal panel P arrives at the bonding area A1 when the non-defective sheet piece F10 formed by the cutting device 8 is conveyed to the bonding area A1. Be controlled.

  FIG. 6 is a diagram illustrating the recovery device and the bonding device during the bonding process of the present embodiment. FIG. 7 is a diagram illustrating a collection device and a bonding device during the defect collection processing of the present embodiment.

  As shown in FIG. 6, the collection device 2 of the present embodiment can execute a separation process for separating the non-defective bonding sheet F9 and the separator F3 from the non-defective sheet pieces F10. The bonding apparatus 9 can execute a bonding process for bonding the non-defective bonding sheet F9 separated from the separator F3 to the liquid crystal panel P conveyed to the bonding area A1. The collection | recovery apparatus 2 can perform the separator collection | recovery process which collect | recovers the separator F3 isolate | separated from the good quality bonding sheet | seat F9. As shown in FIG. 7, the collection | recovery apparatus 2 can perform the fault collection | recovery process which collect | recovers the defective product bonding sheet | seat F12 of the defective product piece F13 with the separator F3.

  The recovery device 2 is configured to transfer (convey) a sheet piece using the separator F3 as a carrier, and whether the optical member F1 of the sheet piece conveyed by the transfer unit 50 is a good optical member or a defective optical member. A determination unit that determines whether the sheet piece is conveyed by the transfer unit 50, a knife edge 20 that can be moved forward and backward, a moving unit 21 that moves the knife edge 20, and a transfer unit that does not contact the knife edge 20. And a collection unit (winder 5) for collecting the defective sheet piece F13 conveyed by the apparatus 50.

  The transfer unit 50 of the present embodiment is configured by a part of the transport device 3. The transfer unit 50 according to the present embodiment includes a first roller 51, a second roller 52, and a third roller 53. The first roller 51, the second roller 52, and the third roller 53 are each one of a plurality of rollers that constitute the transport device 3.

  The determination unit of the present embodiment is included in the control device 10. The control device 10 determines whether the sheet piece conveyed to the first roller 51 is a non-defective sheet piece F10 based on the above-described sheet position information, defect position information, and score line position information. It is determined whether it is F13.

  The knife edge 20 of the present embodiment has a columnar shape extending in the width direction of the optical sheet F, and has a first surface 23 facing the optical sheet F conveyed to the knife edge 20 and an acute angle (0) to the first surface 23. A second surface 24 having an angle greater than 90 ° and less than 90 °. The distal end portion 19 includes an end portion of the second surface 24 adjacent to the first surface 23 and an end portion of the first surface 23 adjacent to the second surface 24.

  During the bonding process (see FIG. 6), the knife edge 20 is arranged at the first position X1 in the vicinity of the bonding area A1. The non-defective sheet piece F10 to be subjected to the bonding process is conveyed from the first roller 51 to the third roller 53 while bringing the first roller 51 and the separator F3 into contact with each other. The non-defective sheet piece F10 changes its traveling direction when the third roller 53 and the non-defective bonding sheet F9 come into contact with each other, and the one edge faces the first surface 23 of the knife edge 20, while the knife edge 20 It is conveyed to the front end portion 19.

  The separator F3 of the non-defective sheet piece F10 is stretched between the leading end 19 and the second roller 52, and is conveyed in a direction that forms an acute angle with respect to the optical member F1 on the downstream side of the conveying path from the leading end 19. Thus, the distal end portion 19 is bent as a fulcrum. On the other hand, the non-defective bonding sheet F <b> 9 proceeds toward the bonding area A <b> 1 in a direction substantially parallel to the first surface 23 from the tip end portions 19 of the first surface 23 and the second surface 24. Thereby, the separator F3 is separated from the non-defective bonding sheet F9 in order from the downstream side (first cut line L1 side) of the conveyance path in the longitudinal direction toward the upstream side (second cut line L2 side). . In this way, the separation process is executed.

  The separator F3 separated from the non-defective product bonding sheet F9 contacts the second roller 52, changes its traveling direction, is wound around the winder 5 via the second roller 52, and is collected. In this way, the separator collection process is executed.

  The bonding apparatus 9 of this embodiment includes a pair of bonding rollers 26. The pair of laminating rollers 26 are arranged so that their rotation axes are substantially parallel to each other. The pair of bonding rollers 26 are arranged so that the non-defective bonding sheet F9 that has passed through the tip 19 proceeds toward the pair of bonding rollers 26. The liquid crystal panel P conveyed to the bonding area A <b> 1 is conveyed by the conveyor 18 between the pair of bonding rollers 26.

  The liquid crystal panel P and the non-defective bonding sheet F9 that are bonded to each other are paired so that the surfaces that contact each other after bonding are parallel to each other and parallel to the rotation axis of the pair of bonding rollers 26. It is sent between the pasting rollers 26. The pair of bonding rollers 26 sandwich and bond the liquid crystal panel P and the non-defective bonding sheet F9 conveyed between the pair of bonding rollers 26 during the bonding process. The non-defective product bonding sheet F9 and the liquid crystal panel P bonded are conveyed downstream of the liquid crystal display element production line. In this way, the bonding process is executed.

  The roller that contacts the separator F3 next to the knife edge 20 in the upstream direction from the knife edge 20 with respect to the conveyance path during the bonding process is the first roller 51, and the roller of the knife edge 20 in the downstream direction from the knife edge 20. Next, the roller that contacts the separator F3 is the second roller 52. The separator F3 of the sheet piece from the first roller 51 toward the knife edge 20 during the collection process is pressed against the surface of the third roller 53 by being supported by the knife edge 20.

  During the defect recovery process (see FIG. 7), the knife edge 20 is disposed at the second position X <b> 2 that does not come into contact with the sheet piece being transferred by the transfer unit 50. As the knife edge 20 moves from the first position X1 toward the second position X2, the separator F3 of the sheet piece from the first roller 51 toward the knife edge 20 moves away from the third roller 53, and eventually becomes the first. It is directly stretched between the roller 51 and the second roller 52.

  In a state where the knife edge 20 is disposed at the second position X2, the defective sheet piece F13 to be subjected to defect recovery processing is moved from the first roller 51 to the second roller while the separator F3 is in contact with the first roller 51. It is conveyed to 52. When the defective sheet piece F13 is wound around the first roller 51, the traveling direction of the defective sheet piece F13 from the first roller 51 is the traveling direction from the first roller 51 of the non-defective sheet piece F10 being separated. And in a different direction. The defective sheet piece F13 is conveyed to the winder 5 while bringing the separator F3 into contact with the second roller 52, and the defective product bonding sheet F12 of the defective sheet piece F13 is collected in the winder 5 together with the separator F3. Is done. In this way, the defect recovery process is executed.

  The moving unit 21 moves the knife edge 20 arranged at the second position X2 from the same side as the separator F3 to the sheet piece with respect to the optical member of the sheet piece conveyed from the first roller 51 to the second roller 52. And can move to the first position X1. Further, the moving unit 21 moves the knife edge 20 disposed at the first position to a position (second position) where the knife edge 20 is not in contact with the separator stretched over the first roller 51 and the second roller 52. Can do.

  The moving unit 21 can execute an arrangement process for moving the knife edge 20 from the second position X2 to the first position X1. The moving unit 21 can execute a retreat process for moving the knife edge 20 from the first position X1 to the second position X2. The control device 10 can control the moving unit 21 to cause the moving unit 21 to execute each of the placement process and the save process.

  The control device 10 of the present embodiment is configured including a computer system. This computer system includes an arithmetic processing unit such as a CPU and a storage unit such as a memory and a hard disk. The control device 10 of the present embodiment includes an interface that can execute communication with an external device of the computer system. An input device that can input an input signal may be connected to the control device 10. The input device includes an input device such as a keyboard and a mouse, or a communication device that can input data from a device external to the computer system. The control device 10 may include a display device such as a liquid crystal display that indicates the operation status of each unit of the bonding system 1 or may be connected to the display device.

  An operating system (OS) that controls the computer system is installed in the storage unit of the control device 10. The storage unit of the control device 10 stores a program that causes the arithmetic processing unit to control each unit of the bonding system 1 to cause each unit of the bonding system 1 to execute a process for eliminating the defective sheet piece F13. ing. Various types of information including programs recorded in the storage unit can be read by the arithmetic processing unit of the control device 10. The control device 10 may include a logic circuit such as an ASIC that performs various processes required for controlling each part of the bonding system 1.

  Next, the bonding method including the collection method of this embodiment will be described. FIG. 8 is a diagram showing a processing flow of the collection method of the present embodiment.

  The bonding method of this embodiment includes a transport process for transporting the optical sheet F in a predetermined transport direction and a plurality of processes that are executed in parallel with the transport process. When attention is paid to a part of the optical sheet F, each of the plurality of processes is executed in time order on the part. Hereinafter, focusing on a part of the optical sheet F, a processing flow of a plurality of processes will be described.

  When focusing on the entire optical sheet F, a first process different from the first part is performed while a first process appropriately selected from a plurality of processes is being performed on the first part of the optical sheet F. For the second part, a second process appropriately selected from a plurality of processes is executed in parallel with the first process.

  In the bonding method of the present embodiment, the detection process S1 for detecting the defect of the optical member F1 of the optical sheet F, and the cutting lines at a plurality of positions in the conveyance direction of the optical sheet F in the portion where the detection process S1 has been executed. A sheet piece forming process S2 is performed to form the non-defective sheet piece F10 or the defective sheet piece F13.

  The control device 10 according to the present embodiment controls the transport device 3 to cause the transport device 3 to perform a transport process for transporting the separator F3 along the transport path from the optical sheet supply unit 4 to the winder 5. The control device 10 controls the detection device 7 to cause the detection device 7 to execute the detection process S1. Based on the measurement result of the length measuring device 6 and the detection result of the detection device 7, the control device 10 generates cut line position information indicating the position on the optical sheet F of the cut line to be formed next. The control device 10 controls the cutting device 8 based on the cut line position information, and causes the cutting device 8 to execute the sheet piece forming process S2.

  Moreover, the bonding method of this embodiment determines whether the sheet piece formed by sheet piece formation process S2 and transferred toward bonding area A1 by the transfer part 50 is a non-defective sheet piece F10. When processing S3 and the sheet piece which goes to bonding area A1 are the non-defective sheet pieces F10, separation processing S4 which separates the non-defective bonding sheet F9 and the separator F3 of the non-defective sheet pieces F10 from each other, and the bonding area A1 Synchronous with the timing when the non-defective sheet piece F10 is conveyed, the panel conveying process S5 that conveys the bonding object (liquid crystal panel P) to the bonding area A1, and the non-defective bonding sheet separated from the separator F3 by the separation process S4. Executes the bonding process S6 for bonding F9 to the bonding object and the separator recovery process S7 for recovering the separator F3 separated from the non-defective bonding sheet F9 in the separation process S4. That.

  The control device (the control unit of the collection device 2) 10 of the present embodiment executes the determination process S3 based on the measurement result of the length measuring device 6, the defect position information, and the score line position information. When the control device 10 determines that the sheet piece toward the bonding area A1 is a non-defective sheet piece F10, the control device 10 controls each part of the collection device 2 so that each part of the collection device 2 has a separation process S4 and a separator collection process S7. Is executed, the panel conveying device 15 is controlled to cause the panel conveying device 15 to execute the panel conveying process S5, and the bonding device 9 is controlled to cause the bonding device 9 to execute the bonding process S6.

  Moreover, the bonding method of this embodiment stops carrying in of the bonding target object (liquid crystal panel P) to bonding area A1, when the sheet piece which goes to bonding area A1 is inferior goods sheet piece F13. Or the panel retracting process S8 for retracting the object to be bonded from the pasting area A1, and the first roller 51 and the second roller by disposing the knife edge 20 at the second position X2 after the panel retracting process S8. The conveyance path between the rollers 52 is changed so as not to come into contact with the knife edge 20, and the defect recovery process S9 for recovering the defective product bonding sheet F12 together with the separator F3 is executed.

  When the control device 10 of the present embodiment determines that the sheet piece toward the tip 19 of the knife edge 20 is not a non-defective sheet piece F10 (is a defective sheet piece F13) in the determination process S3, Control is performed to cause the panel transport device 15 to execute the panel evacuation process S8, and each part of the recovery apparatus 2 is controlled to cause each part of the recovery apparatus 2 to execute the defect recovery process S9.

FIG. 9 is a diagram showing a processing flow when switching between the bonding process and the defect recovery process in the present embodiment.
When the sheet piece following the non-defective sheet piece F10 that is the target of the bonding process S6 is the defective sheet piece F13, the bonding method of the present embodiment is performed at the first position X1 after executing the panel retracting process S8. A evacuation process S10 for moving the arranged knife edge 20 to the second position X2 is executed, and after the evacuation process S10 is completed, a defect recovery process S9 for the defective sheet piece F13 is executed.

  In addition, when two or more non-defective sheet pieces F10 are continuously conveyed to the bonding area A1, the bonding process S6 is performed while the knife edge 20 is held at the first position X1, and the two or more non-defective sheet pieces F10. It is executed continuously.

  The control device 10 of the present embodiment controls the panel conveying device 15 to execute the panel retracting process S8 after the pasting process S6 for the previous sheet piece, and after the panel retracting process S8 ends, the moving unit 21 Is controlled to cause the moving unit 21 to execute the evacuation process S10, and after the evacuation process S10 is completed, the defect recovery process S9 for the next sheet piece is executed.

  In the bonding method of the present embodiment, when the sheet piece following the defective sheet piece F13 that is the target of the defect recovery process S9 is the non-defective sheet piece F10, the knife edge 20 disposed at the second position X2 is the first. The arrangement process S11 that moves to the position X1 is executed, and after the arrangement process S11 is finished, the separation process S4, the panel conveyance process S5, and the bonding for the non-defective sheet piece F10 that arrives next at the tip 19 of the knife edge 20 Processing S6 and separator collection processing S7 are executed.

  When two or more defective sheet pieces F13 are continuously conveyed to the first roller 51, the defect recovery processing S9 performs two or more defective products while holding the knife edge 20 at the second position X2. It is executed continuously on the sheet piece F13.

  The control device 10 according to the present embodiment controls the moving unit 21 to cause the moving unit 21 to execute the arrangement process S11 after the completion of the defect collection process S9 for the previous sheet piece. A separation process S4, a panel conveyance process S5, a bonding process S6, and a separator recovery process S7 are performed on the sheet pieces.

  As mentioned above, the bonding method of this embodiment is the bonding target object (liquid crystal panel) among the several sheet pieces formed from the optical sheet F by the optical member F1 including the non-defective bonding sheet F9. In addition to bonding to P), the defective product bonding sheet F12 can be recovered without bonding to the bonding object.

  As described above, the control device 10 of the present embodiment is configured by a computer system, and controls each unit of the bonding system 1 according to a program stored in the storage unit of the control device 10. This program is a program for causing a computer to execute control of a collecting apparatus that collects an optical member including a defect, and transferring a sheet piece in which an optical member and a separator are detachably stacked; A knife edge that determines whether the optical member of the sheet piece is a non-defective optical member that does not include a defect or a defective optical member that includes a defect, and separates the separator from the optical member by contacting the sheet piece When the optical member of the sheet piece to be transferred is determined to be the defective optical member, the sheet piece transferred to the position where it does not contact the knife edge is moved. This is a program for executing recovery.

  The collection device 2 configured as described above can collect the defective product bonding sheet F12 in which the optical member F1 includes the defect F11, together with the separator F3. Therefore, the removal film can be omitted and the cost required for the removal film can be omitted as compared with the method of transferring the defective product bonding sheet F12 to a removal film or the like different from the separator F3 and removing it. it can. Moreover, since the collection | recovery apparatus 2 can collect | recover the defective product bonding sheet | seat F12 using the winder 5 which collect | recovers separator F3, for example, the apparatus which collects the film for removal is separated from the winder 5 The necessity for providing is reduced, and the apparatus configuration can be simplified.

  Thus, the collection device 2 of the present embodiment can effectively remove the defect F11 of the optical member F1. Moreover, the bonding system 1 of this embodiment bonds the optical member F1 (good quality bonding sheet | seat F9) which does not contain the fault F11 with the bonding target object, removing the fault F11 of the optical member F1 effectively. be able to. Moreover, since the collection method of this embodiment can remove the defective product bonding sheet F12 without using a removal film or the like separate from the separator F3, the defect F11 of the optical member F1 is effectively removed. can do.

  The technical scope of the present invention is not limited to the above embodiment. Various modifications are possible without departing from the gist of the present invention.

  Although the said bonding system 1 is detecting the fault F11 of the optical member F1 with the detection apparatus 7, while using the optical sheet F previously test | inspected before conveying, the control apparatus 10 uses the test result. It may be determined whether or not it is a non-defective sheet piece. The inspection result may be formed on the optical sheet F in the form of a sign or the like, or may be input to the control device as data indicating the position of the defect from the end in the longitudinal direction of the roll R, for example. Thus, when using the optical sheet F inspected in advance, the detection device 7 may be omitted.

  Moreover, although the said bonding system 1 has divided the optical sheet F into the several sheet piece by forming a cutting line with the cutting device 8, the optical sheet F previously divided into the several sheet piece In this case, the cutting device 8 may be omitted.

  Moreover, although the said bonding system 1 pays out the optical sheet F from the roll R in which the optical sheet F was wound, even if the optical sheet supply part 4 of the conveying apparatus 3 is an optical sheet F manufacturing apparatus. Good. A part of the bonding system 1 may be sufficient as the manufacturing apparatus of this optical sheet F, and the apparatus outside the bonding system 1 may be sufficient as it.

DESCRIPTION OF SYMBOLS 1 ... Bonding system, 2 ... Recovery apparatus, 3 ... Conveyance apparatus (transfer part), 5 ... Winding machine (collection part), 7 ... Detection apparatus, 8 ... Cutting Apparatus, 9 ... bonding apparatus, 10 ... control apparatus (determination part), 20 ... knife edge, 21 ... moving part, 26 ... bonding roller, F ... optical sheet, F1 ... optical member, F3 ... separator, F9 ... non-defective bonding sheet (non-defective optical member), F10 ... non-defective sheet piece, F11 ... defect, F12 ... defective bonding sheet (Defective product optical member), F13 ... defective product sheet piece

Claims (6)

A transfer unit for transferring a sheet piece in which an optical member and a separator are detachably stacked; and
A determination unit that determines whether the optical member of the sheet piece transferred by the transfer unit is a non-defective optical member that does not include a defect or a defective optical member that includes a defect;
When the optical member of the sheet piece transferred by the transfer unit is determined as the non-defective optical member by the determination unit, the knife edge that contacts the sheet piece and separates the separator from the optical member is determined. A moving part that moves to a position that does not contact the piece;
And a collection unit that collects the sheet pieces transferred by the transfer unit without contacting the knife edge. The transfer unit includes a first roller and a second roller that contact the separator of the sheet pieces,
The moving unit is capable of moving the knife edge toward the sheet piece from the same side as the separator with respect to the optical member of the sheet piece transferred from the first roller to the second roller, The knife edge is placed at a position where the sheet piece transferred to the transfer unit does not come into contact with the separator stretched over the first roller and the second roller when the determination unit determines that the optical member is defective. The collection device according to claim 1 which moves. The collection device according to claim 1 or 2,
A laminating system comprising: a laminating roller for laminating an optical member, which is determined as the non-defective optical member by the determination unit and separated from the separator by the knife edge, to an object to be bonded.   The pasting system according to claim 3 provided with a detecting device which detects a fault of said optical member.   The pasting system according to claim 3 or 4 provided with the cutting device which cuts the optical sheet by which the optical member and the separator were mutually laminated so that separation was possible, leaving the separator in the thickness direction, and forming the sheet piece. Transferring a sheet piece in which an optical member and a separator are laminated in a separable manner;
Determining whether the optical member of the sheet piece is a good optical member that does not include a defect or a defective optical member that includes a defect;
A position at which the knife edge that contacts the sheet piece and separates the separator from the optical member does not come into contact with the sheet piece when it is determined that the optical member of the transferred sheet piece is the defective optical member Moving to
Collecting the sheet piece transferred without contacting the knife edge.

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