JP4844857B1 - Collection device, bonding system, and collection method - Google Patents

Abstract

The present invention provides a collection device which is provided with a transfer unit which transfers at least a separator for protecting an optical material from a sheet piece having the optical material detachably laminated onto the separator, while the separator is being wound around the tip of a knife edge; a determining unit which determines whether the optical material of said sheet piece which is transferred to said tip of said knife edge is a non-defective optical material having no defect or a defective optical material having said defect; a jig which is moved to a position opposite said tip of said knife edge when said determining unit determines that said optical material is a defective optical material, and presses said defective optical material towards said separator; and a collecting unit which collects said sheet piece including said defective optical material, which was transferred via said tip of said knife edge.

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 (for example, see Patent Document 1). The recovery device of Patent Document 1 can transport a long polarizing plate protected by a separator in the longitudinal direction thereof, and inspect the defects of the polarizing plate in the middle of the transportation to remove the detected defects. Specifically, the above-described recovery device can cut (half-cut) the polarizing plate including a defect while 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 collection device according to the first aspect of the present invention includes a transfer unit that wraps and transfers a sheet piece in which an optical member and a separator are detachably stacked around a tip end of a knife edge, and the tip of the knife edge. A determination unit for determining whether the optical member of the sheet piece to be transferred is a non-defective optical member having no defect or a defective optical member having a defect; and the sheet piece to be transferred to the tip of the knife edge When the determination unit determines that the optical member is the defective optical member, the optical member is disposed at a position facing the tip end of the knife edge, and the defective optical member is disposed at the tip end of the knife edge. A jig that presses the defective optical member toward the separator so as not to peel from the separator, and a sheet piece including the defective optical member transferred via the knife edge is collected. Includes a recovery unit that, a.

  In the collection device according to the first aspect, the jig has a concave surface that bends along the tip portion of the knife edge, and the sheet piece is sandwiched between the concave surface and the tip portion of the knife edge. The defective optical member may be pressed toward the separator.

  The collection device of the first aspect includes a pressing member that presses the defective optical member toward the separator by sandwiching a sheet piece that passes through the tip of the knife edge between the knife edge. Also good.

  In the collection device according to the first aspect, a relative position of the pressing member with respect to the jig may be fixed.

  The bonding system of the second aspect of the present invention is the recovery device of 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 at the tip of the knife edge. A pasting roller for pasting to the pasting object.

  The bonding system according to the second aspect includes a moving mechanism that moves the bonding roller so that the bonding roller does not interfere with the jig when the jig is disposed at a position facing the knife edge. You may have.

  The bonding system of the second aspect includes a second moving mechanism that moves the jig so as not to interfere with the bonding roller, and arranges the jig at a position facing the knife edge. Also good.

  In the bonding system according to the second aspect, the recovery device presses the defective optical member toward the separator by sandwiching a sheet piece that has passed through the tip of the knife edge between the knife edge. A pressing member may be provided, and the second moving mechanism may be arranged by moving together with the jig so that the pressing member does not interfere with the bonding roller.

  In the bonding system according to the second aspect, a relative position of the pressing member with respect to the jig may be fixed.

  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.

  The recovery method according to the third aspect of the present invention includes transferring a sheet piece formed by stacking an optical member and a separator so as to be separable around the tip end of a knife edge, and transferring the sheet piece to the tip end of the knife edge. Determining 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 the optical of the sheet piece that is transferred to the tip of the knife edge When it is determined that the member is the defective optical member, the defective optical member is pressed toward the separator so that the defective optical member does not peel from the separator at the tip of the knife edge. And collecting a sheet piece including the defective optical member transferred via 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. It is a figure which shows the modification of a collection | recovery apparatus. It is a figure which shows the 2nd modification of a collection | recovery apparatus.

  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.

  As described above, the optical member F1 may not include the surface protective film F4, the optical member F1 may include the surface protective film F4, and the optical sheet F includes the surface protective film F4. It does not have to be. 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. The feeding machine can hold and rotate the roll R, and can feed the optical sheet F from the roll R to the conveyance path. The winder 5 collects only the separator F3 when the optical member F1 is separated from the separator F3. The winder 5 collects the separator F3 and the bonding sheet F5 when the optical member F1 is not separated from the separator F3.

  The plurality of rollers of the transport device 3 forms a transport path by spanning at least the separator F3 of the optical sheet F. The plurality of rollers of the conveying device 3 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 the 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. For example, the cutting device includes a round blade cutter and a drive unit, and the drive unit causes the round blade cutter to contact the optical sheet F and move (transverse) in the width direction of the optical sheet F, thereby half-cutting the optical sheet F. The structure which gives may be sufficient. Said round blade cutter is disk shape, for example, and is the structure where the blade was provided along the outer periphery. The drive unit may be moved in the width direction of the optical sheet F without rotating the round blade cutter, or may be moved while rotating. Further, the cutting device 8 may include a plurality of round blade cutters, and one or more of the plurality of round blade cutters may move while rotating, and other round blade cutters may move without rotating. Good.

  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 part 16 is controlled by the control device 10 and detachably holds the liquid crystal panel P carried 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 conveyor 18 is a bonding apparatus so that the liquid crystal panel P carried to the bonding area A1 and the non-defective bonding sheet F9 carried 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 perform the bonding process of 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 collection device 2 uses a separator F3 as a carrier to transfer (convey) a sheet piece around the knife edge 20 and the sheet piece transferred to the knife edge 20 is a defective sheet piece F13 or a non-defective product. The determination part which determines whether it is the sheet piece 10, and the guide which guides the inferior product bonding sheet | seat F12 so that the defective product bonding sheet | seat F12 of the inferior product sheet piece F13 may not isolate | separate from the separator F3 with the knife edge 20. And a collection unit 21 that collects the defective sheet piece F13 transferred via the knife edge 20.

  The transfer unit of the present embodiment is configured to include a knife edge 20 and a roller on which the separator F3 is stretched together with the knife edge 20 among a plurality of transport rollers constituting the transport device 3. One of the rollers around which the separator F3 is stretched together with the knife edge 20 is a guide roller 25 disposed downstream of the knife edge 20 in the transport path.

  The determination unit of the present embodiment is included in the control device 10. The determination unit (the control device 10) of the present embodiment determines that the sheet piece conveyed to the knife edge 20 is a defective sheet piece based on the above-described sheet position information, defect position information, and score line position information. Whether it is F13 or a non-defective sheet piece 10 is determined.

  The collection unit 21 of this embodiment is a part of the transport device 3. The collection unit 21 of the present embodiment includes at least one of the rollers disposed on the downstream side of the conveyance path from the guide roller 25 among the plurality of rollers constituting the winder 5 and the conveyance device 3. Has been. The collection unit 21 may be configured only by the winder 5.

  The guide portion 22 of the present embodiment has a jig 29 that presses the defective product bonding sheet F12 toward the separator F3, and a first position X1 that contacts the jig 29 with the defective product sheet piece that passes through the knife edge 20. And a first moving unit 30 that moves between the second position X2 that does not contact the non-defective sheet side via the knife edge 20.

  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.

  In the present embodiment, the optical sheet F transported to the collection device 2 is transported toward the front end portion 19 with one surface thereof facing the first surface 23 of the knife edge 20. The separator F3 is stretched over the front end portion 19 and the guide roller 25 and is conveyed in a direction that forms an acute angle with respect to the optical member F1 at a portion downstream of the front end portion 19 in the conveyance path. Bend around 19 as a fulcrum. On the other hand, the non-defective product bonding sheet F <b> 9 advances in a direction substantially parallel to the first surface 23 from the front 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 is wound around the winder 5 via the guide roller 25 and collected. In this way, the separator collection process is executed.

  The bonding apparatus 9 of this embodiment includes a pair of bonding rollers 26 and a moving mechanism (hereinafter referred to as a second moving unit 27) that can move the bonding rollers 26. The pair of laminating rollers 26 are arranged so that their rotation axes are substantially parallel to each other. The bonding roller 26 is disposed at the third position X3 when the bonding process is executed. The third position X3 is set so that the gap between the pair of bonding rollers 26 disposed at the third position X3 is disposed at the tip of the non-defective bonding sheet F9 via the tip portion 19. ing. The liquid crystal panel P conveyed to the bonding area A1 is conveyed by the conveyor 18 between the pair of bonding rollers 26 disposed at the third position X3.

  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 carried 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 jig 29 of the guide part 22 of the present embodiment is a member used during the defect recovery process. The jig 29 can change the traveling direction of the defective product bonding sheet F12 so that the defective product bonding sheet F12 rotates around the tip 19 of the knife edge 20 along the separator F3.

  During the bonding process, the jig 29 is disposed at the second position X2 that does not contact the non-defective bonding sheet F9 that has passed through the tip 19 of the knife edge 20. In this embodiment, the 2nd position X2 is set so that the jig | tool 29 arrange | positioned in the 2nd position X2 may not prevent operation | movement of the bonding apparatus 9 in the bonding process. Here, the second position X2 is set so that the jig 29 arranged at the second position X2 does not come into contact with either the pair of bonding rollers 26 or the liquid crystal panel P.

  The jig 29 of this embodiment has a concave surface 28. During the defect recovery process (see FIG. 7), the jig 29 is disposed at the first position X1 so that the concave surface 28 faces the tip 19 of the knife edge 20. The concave surface 28 of the jig 29 has a shape bent along the tip 19 of the knife edge 20 when the jig 29 is disposed at the first position X1. In the present embodiment, the concave surface 28 is V-shaped (or U-shaped) when viewed from the width direction of the optical sheet F when reaching the tip 19 of the knife edge 20.

  Said 1st position X1 is set so that the concave surface 28 of the jig | tool 29 arrange | positioned in the 1st position X1 may surround the front-end | tip part 19 in the vicinity of the knife edge 20. FIG. The distance between the concave surface 28 of the jig 29 arranged at the first position X1 and the first surface 23 or the second surface 24 around the tip 19 of the knife edge 20 is, for example, one time the thickness of the optical sheet F. Larger than 10 times or less, and here, it is set larger than 1 times the thickness of the optical sheet F and 2 times or less.

  During the defect recovery process, the pair of bonding rollers 26 is disposed at the fourth position X4. The fourth position X4 is set so that the pair of bonding rollers 26 arranged at the fourth position X4 does not interfere with the jig 29 arranged at the first position X1.

  During the defect recovery process, the separator F3 of the defective sheet piece F13 conveyed to the tip part 19 of the knife edge 20 is bent with the tip part 19 as a fulcrum and is guided to the guide roller 25 as in the above separation process. It is conveyed toward. During the defect collection process, the defective product bonding sheet F12 passing through the tip 19 of the knife edge 20 is sent while being bent along the concave surface 28 of the jig 29 arranged at the first position X1. , Pressed toward the separator F3. The jig 29 is configured to hold the defective product bonding sheet F12 so that at least a part of the defective product bonding sheet F12 is in contact with the separator F3 bent at the front end portion 19 and on the downstream side of the transport path from the front end portion 19. Bend. In the present embodiment, the shape of the concave surface 28 of the jig 29 and the first position X1 are such that the defective product bonding sheet F12 bent by the jig 29 and the separator F3 bent by the tip 19 are not substantially separated from each other. Is set.

  The defective product bonding sheet F12 that has passed through the tip 19 of the knife edge 20 is wound around the winder 5 via the guide roller 25 together with the separator F3, and in the same manner as the separator F3 during the separator recovery process, the recovery unit 21 is recovered. In this way, the defect recovery process is executed.

  The first moving unit 30 can move the jig 29 between the first position X1 and the second position X2. The first moving unit 30 includes a jig placement process for moving the jig 29 from the second position X2 to the first position X1, and a jig for moving the jig 29 from the first position X1 to the second position X2. The equipment evacuation process can be executed. The control device 10 can control the first moving unit 30 to cause the first moving unit 30 to execute the jig placement process and the jig placement / retreat process.

  The second moving unit 27 can move the pair of bonding rollers 26 between the third position X3 and the fourth position X4. The second moving unit 27 includes a bonding roller arrangement process for moving the pair of bonding rollers 26 from the fourth position X4 to the third position X3, and the pair of bonding rollers 26 from the third position X3 to the fourth position. The pasting roller arrangement evacuation process which moves to the position X4 can be executed. The control apparatus 10 can control the 2nd moving part 27, and can make the 2nd moving part 27 perform each of a bonding roller arrangement | positioning process and a bonding roller arrangement | positioning withdrawal 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.

  Further, the bonding method of the present embodiment includes a determination process S3 for determining whether or not the sheet piece formed in the sheet piece forming process S2 and directed to the tip 19 of the knife edge 20 is a non-defective sheet piece F10, and a knife When the sheet piece toward the tip 19 of the edge 20 is the non-defective sheet piece F10, the separation sheet S9 for separating the non-defective bonding sheet F9 and the separator F3 of the non-defective sheet piece F10 from each other, and the non-defective sheet in the bonding area A1 Synchronizing with the timing at which the piece F10 is conveyed, a panel conveying process S5 that conveys the bonding object (liquid crystal panel P) to the bonding area A1, and a non-defective bonding sheet F9 separated from the separator F3 by the separation process S4. A pasting process S6 for pasting with a pasting object and a separator recovery process S7 for recovering the separator F3 separated from the non-defective pasting sheet F9 in the separation process S4 are executed. .

  The control device 10 according to the present embodiment executes the determination process S3 based on the measurement result of the length measuring device 6 and the defect position information. When the control device 10 determines that the sheet piece toward the tip 19 of the knife edge 20 is a non-defective sheet piece F10, the control device 10 controls the collection unit 21 to perform separation processing S4 and separator collection processing S7 on the collection unit 21. Control the panel conveyance device 15 to cause the panel conveyance device 15 to execute the panel conveyance processing S5, and control the bonding device 9 to cause the bonding device 9 to execute the bonding processing S6.

  Moreover, when the sheet piece which goes to the front-end | tip part 19 of the knife edge 20 is the inferior goods sheet piece F13, the bonding method of this embodiment carries in the bonding target object (liquid crystal panel P) to bonding area A1. Or the panel withdrawal process S8 for retracting the object to be bonded from the bonding area A1, and the defect recovery process S9 for recovering the defective product bonding sheet F12 together with the separator F3 after the panel withdrawal process S8, Execute.

  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 the guide unit 22 and the recovery unit 21 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.
In the bonding method of 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 panel retracting process S8 is performed and then the third position X3. The pasting roller arrangement / retraction process S10 for moving the pair of pasting rollers 26 arranged to the fourth position X4 and the end position of the pasting roller arrangement / retraction process S10 are arranged at the second position X2. A jig placement process S11 for moving the jig 29 being moved to the first position X1, and after the jig placement process S11 is completed, the defective sheet piece that arrives next at the tip 19 of the knife edge 20 The defect recovery process S9 for 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 maintaining the position of the pair of bonding rollers 26 and the position of the jig 29. The above-described non-defective sheet piece F10 is executed continuously.

  The control device 10 of the present embodiment controls the panel transport device 15 to execute the panel evacuation process S8 after the pasting process S6 for the previous sheet piece, and performs the second movement after the panel evacuation process S8 ends. The unit 27 is controlled to cause the second moving unit 27 to execute the pasting roller arrangement / retraction process S10. After the pasting roller arrangement / retreat process S10 is completed, the first moving unit 30 is controlled to the first moving unit 30. The jig arrangement process S11 is executed, and after the jig arrangement process S11 is finished, the panel retracting process S8 and the defect collecting process S9 for the next sheet piece are 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 jig 29 disposed at the first position X1 is the first. The jig retracting process S12 that moves to the second position X2, and after the jig retracting process S12 ends, the pair of bonding rollers 26 arranged at the fourth position X4 are moved to the third position X3. The pasting roller arrangement process S13 is executed, and after the pasting roller arrangement process S13, the separation process S4, the panel conveying process S5, the pasting process for the non-defective sheet piece F10 that arrives next at the tip 19 of the knife edge 20 is performed. The combined process S6 and the separator collection process S7 are executed.

  Note that when two or more defective sheet pieces F13 are continuously conveyed to the tip 19 of the knife edge 20, the defect recovery process S9 maintains the position of the pair of bonding rollers 26 and the position of the jig 29. As it is, the process is continuously performed on two or more defective sheet pieces F13.

  The control device 10 according to the present embodiment controls the first moving unit 30 to cause the first moving unit 30 to execute the jig evacuation process S12 after the completion of the defect recovery process S9 for the previous sheet piece. After the process S12 ends, the second moving unit 27 is controlled to cause the second moving unit 27 to execute the bonding roller arrangement process S13. After the bonding roller arrangement process S13 ends, the separation process S4 for the next sheet piece, Panel conveyance processing S5, pasting processing S6, and separator recovery processing S7 are performed.

  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 causes a computer to execute control of a collecting device that collects optical members including defects, and a sheet piece in which optical members and separators are detachably stacked is attached to the tip of a knife edge. Determining whether the optical member of the sheet piece transferred to the tip of the knife edge is a good 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 to the tip of the knife edge is determined to be the defective optical member, the defective optical member does not peel from the separator at the tip of the knife edge. And pressing the defective optical member toward the separator, and including the defective optical member transferred via the knife edge. And recovering the over preparative piece, a program for executing the.

  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 collection | recovery part 21 which collect | recovers separator F3, it is necessary to provide the apparatus which collects the film for removal separately from the collection | recovery part 21, for example The device configuration can be simplified.

  As described above, 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.

  Next, a modified example of the collection device will be described. FIG. 10 is a view showing a modification of the collection device of the present embodiment.

  The collection device 2B shown in FIG. 10 sandwiches a defective sheet piece F13 that has passed through the tip 19 of the knife edge 20 between the second surface 24 of the knife edge 20 to provide a defective optical member (defective product affixing). A pressing member 31 is provided to press the interleaving sheet F12) toward the separator F3. The pressing member 31 of this example is configured by a roller that can rotate around a rotation axis that is parallel to the width direction of the defective product bonding sheet F <b> 12 that passes through the distal end portion 19.

  In bonding process S6, the pressing member 31 is arrange | positioned in the 5th position X5 which does not contact the good quality bonding sheet | seat F9 which passed through the front-end | tip part 19 of the knife edge 20. FIG. In the present embodiment, the fifth position X5 is set so that the pressing member 31 disposed at the fifth position X5 does not hinder the operation of the bonding apparatus 9 during the bonding process S6. Here, the fifth position X5 is set so that the pressing member 31 disposed at the fifth position X5 does not contact any of the pair of bonding rollers 26 and the liquid crystal panel P.

  In the defect recovery process S9, the pressing member 31 is disposed at the sixth position X6 so as to sandwich the defective product bonding sheet F12 and the separator F3 between the second surface 24 of the knife edge 20. In this example, the 1st moving part 30 of the guide part 22 is controlled by the control apparatus 10, and can move the press member 31 between the 5th position X5 and the 6th position X6.

  The pressing member 31 arranged at the sixth position X6 presses the defective product sheet piece F13 toward the second surface 24, thereby pressing the defective product bonding sheet F12 and the separator F3 together to bring them into close contact with each other. Thereby, for example, even when a part of the defective product bonding sheet F12 is peeled off from the separator F3 when passing through the tip portion 19, the defective product bonding sheet F12 and the separator F3 are in close contact with each other. Before the bonding sheet F12 is taken up by the winder 5, the separation from the separator F3 is suppressed, and the defective product bonding sheet F12 can be effectively collected.

  Next, a second modification of the collection device will be described. FIG. 11 is a diagram illustrating a second modification of the collection device according to the present embodiment.

  A recovery device 2C illustrated in FIG. 10 includes a jig 29, a pressing member 31, and a first moving unit 30 (second moving mechanism). The jig 29 in this example rotatably holds the pressing member 31 at the end of the concave surface 28 on the downstream side in the transport direction. That is, the relative position of the pressing member 31 with respect to the jig 29 is fixed. Hereinafter, the jig 29 and the pressing member 31 whose positions are fixed to each other are referred to as a peeling suppression unit 32.

  In bonding process S6, the peeling suppression unit 32 is arrange | positioned in the 7th position X7 which does not contact the good quality bonding sheet | seat F9 which passed through the front-end | tip part 19 of the knife edge 20. FIG. Further, during the defect recovery process S <b> 9, the separation suppressing unit 32 is disposed at the first position X <b> 1 where the jig 29 contacts the defective sheet piece passing through the knife edge 20, and the pressing member 31 is the knife edge 20. It arrange | positions in the 8th position X8 so that inferior-goods bonding sheet | seat F12 and the separator F3 may be pinched | interposed between the 2nd surface 24 of this. The 1st moving part 30 is controlled by the control apparatus 10, and the peeling suppression unit 32 is made into 7th position X7 and 8th position X8 so that each of the jig | tool 29 and the press member 31 may not interfere with a bonding roller. Can move between.

  The recovery device 2C of the second modified example suppresses detachment from the separator F3 before the defective product bonding sheet F12 is taken up by the winder 5, and effectively recovers the defective product bonding sheet F12. can do. Moreover, since the jig | tool 29 and the press member 31 are integrated and the peeling suppression unit 32 is comprised, and the 1st moving part 30 moves the peeling suppression unit 32, the jig | tool 29 and the press member 31 are separately provided. The configuration and control method of the first moving unit 30 can be simplified compared to the configuration of moving to the first position.

  Note that the jig 29 and the pressing member 31 may be fixed to each other by a fixing member different from both the jig 29 and the pressing member 31 to constitute a peeling suppression unit. Further, the relative position of the pressing member 31 with respect to the jig 29 may be variable. Further, the mechanism for moving the pressing member 31 and placing it at the predetermined position may be provided separately from the mechanism for moving the jig 29 and placing it at the predetermined position.

  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.

  In the above embodiment, an example in which the defective product bonding sheet F12 that passes through the tip 19 is not substantially separated from the separator F3 has been described, but the defective product bonding sheet F12 may be partially separated from the separator F3. If it is in close contact with the separator F3, it can be recovered together with the separator F3. Moreover, you may improve the adhesiveness of the inferior-goods bonding sheet | seat F12 after passing through the front-end | tip part 19, and the separator F3 like the said modification.

  The first moving unit 30 and the second moving unit 27 may be included in one moving mechanism including a link mechanism that can move the bonding roller 26 and the jig 29 in conjunction with each other. The mechanism may be controlled by the control device 10.

DESCRIPTION OF SYMBOLS 1 ... Bonding system, 2, 2B ... Collection | recovery apparatus, 3 ... Conveyance apparatus (transfer part, collection | recovery part) 7 ... Detection apparatus, 8 ... Cutting apparatus, 9 ... Bonding Device: 10 ... Control device (determination unit), 19 ... Tip, 20 ... Knife edge, 21 ... Recovery unit, 26 ... Pasting roller, 27 ... Second moving unit (Moving mechanism), 28 ... concave surface, 29 ... jig, 30 ... first moving part (second moving mechanism), 31 ... pressing member, F ... optical sheet, F1. ..Optical member, F3... Separator, X1... First position, F9 .. non-defective bonding sheet (non-defective optical member), F10... Non-defective sheet piece, F11. ..Defective product bonding sheet (defective product optical member), F13.

Claims (12)

A transfer unit that winds and transfers a sheet piece in which the optical member and the separator are detachably stacked around the tip of the knife edge;
A determination unit that determines whether the optical member of the sheet piece transferred to the tip of the knife edge is a non-defective optical member that does not include a defect or a defective optical member that includes a defect;
When the determination unit determines that the optical member of the sheet piece transferred to the tip end of the knife edge is the defective optical member, the sheet piece is disposed at a position facing the tip end of the knife edge, A jig that presses the defective optical member toward the separator so that the defective optical member does not peel from the separator at the tip of the knife edge;
A collection device comprising: a collection unit that collects a sheet piece including the defective optical member transferred via the knife edge.   The jig has a concave surface that bends along the tip of the knife edge, and the defective optical member is inserted into the defective optical member by sandwiching the sheet piece between the concave surface and the tip of the knife edge. The recovery device according to claim 1, wherein the recovery device is pressed toward the separator.   The collection device according to claim 1, further comprising: a pressing member that presses the defective optical member toward the separator by sandwiching a sheet piece that passes through the tip of the knife edge between the knife edge.   The recovery device according to claim 3, wherein the pressing member is fixed at a relative position to the jig. The recovery device according to any one of claims 1 to 4,
A bonding system comprising: a bonding roller that bonds the optical member that is determined as the non-defective optical member by the determination unit and separated from the separator at the tip of the knife edge to a bonding object.   The pasting system according to claim 4 provided with a movement mechanism which moves said pasting roller so that said pasting roller may not interfere with said jig when said jig is arranged in the position which counters said knife edge. .   The bonding system according to claim 5 or 6, further comprising a second moving mechanism that moves the jig so as not to interfere with the bonding roller and arranges the jig at a position facing the knife edge. The collection device includes a pressing member that presses the defective optical member toward the separator by sandwiching a sheet piece via the tip of the knife edge with the knife edge,
The bonding system according to claim 7, wherein the second moving mechanism moves and arranges the pressing member together with the jig so as not to interfere with the bonding roller.   The bonding system according to claim 8, wherein the pressing member has a fixed relative position to the jig.   The bonding system according to any one of claims 5 to 9, further comprising a detection device that detects a defect of the optical member.   11. The cutting device according to claim 5, further comprising: a cutting device that cuts an optical sheet in which an optical member and a separator are stacked so as to be separable from each other, leaving the separator in a thickness direction thereof to form the sheet piece. Pasting system. Wrapping and transferring a sheet piece in which the optical member and the separator are detachably stacked around the tip of the knife edge;
Determining whether the optical member of the sheet piece transferred to the tip of the knife edge is a non-defective optical member or a defective optical member that does not include a defect;
When it is determined that the optical member of the sheet piece transferred to the tip of the knife edge is the defective optical member, the defective optical member does not peel from the separator at the tip of the knife edge. And pressing the defective optical member toward the separator;
Recovering a sheet piece including the defective optical member transferred via the knife edge.

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