WO2012114546A1 - Collection device, lamination 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

Collection device, bonding system, and collection method

The present invention relates to a recovery device, a bonding system, and a recovery method.
This application claims priority based on Japanese Patent Application No. 2011-037060 filed in Japan on February 23, 2011 and Japanese Patent Application No. 2011-088166 filed on April 12, 2011 in Japan, The contents are incorporated here.

2. Description of the Related Art 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 transports a long polarizing plate protected by a separator in the longitudinal direction thereof, and inspects the defects of the polarizing plate during the transportation to remove the detected defects. In detail, said collection | recovery apparatus cut | disconnects a polarizing plate containing a fault (half cut) leaving a separator in the thickness direction of a polarizing plate based on a test result. Moreover, said collection | recovery apparatus transfers the cut | disconnected polarizing plate to the removal film different from a separator, and collect | recovers (removes) a fault with a removal film.

Japanese Unexamined Patent Publication No. 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. Further, since the above-described collecting device requires a device for collecting the removal film, in addition to the device for collecting the separator, the device configuration 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.

(1) The collection device according to the first aspect of the present invention includes a knife edge, and at least the separator of the sheet pieces in which an optical member and a separator protecting the optical member are stacked so as to be separable. A transfer part that is wound around and transferred to the tip part of the edge; the optical member of the sheet piece that is transferred to the tip part of the knife edge is a non-defective optical member that does not contain a defect, or A determination unit that determines whether the optical member is a non-defective optical member; and when the determination unit determines that the optical member is the defective optical member, the determination unit is moved to a position facing the tip of the knife edge, A jig that presses the defective optical member toward the separator; and a circuit that collects the sheet piece including the defective optical member that has been transferred via the tip portion of the knife edge. Comprises; parts and.

(2) In the collection device according to (1), the jig has a concave portion bent along the tip portion of the knife edge; between the concave portion and the tip portion of the knife edge. The sheet piece may be sandwiched.

(3) The collection device according to (1) or (2) may further include a pressing member that presses the sheet piece wound around the tip portion of the knife edge toward the knife edge.

(4) In the collection device according to (3) above, the relative position of the pressing member with respect to the jig may be fixed.

(5) The bonding system according to the second aspect of the present invention includes the collection device according to (1) or (2) above; and when the determination unit determines that the optical member is the non-defective optical member And a plurality of laminating rollers for laminating the optical member separated from the separator to a laminating object after only the separator is wound by the knife edge.

(6) The bonding system according to (5), wherein the bonding system is moved to a position deviated from a movement path of the jig when the jig is moved to a position facing the tip portion of the knife edge. A first moving mechanism for moving the combined rollers may be provided.

(7) The bonding system according to (5) may further include a second moving mechanism that moves the jig to a position facing the tip of the knife edge.

(8) In the bonding system according to (7), the recovery device includes a pressing member that presses the sheet piece wound around the tip portion of the knife edge toward the tip portion of the knife edge. And the pressing member may be moved by the second moving mechanism.

(9) In the bonding system according to the aspect described in (8) above, the relative position of the pressing member with respect to the jig may be fixed.

(10) The bonding system according to (5) may further include a detection device that detects the defect of the optical member.

(11) The bonding system according to (5) may further include a cutting device that cuts the optical member along the thickness direction to form the sheet piece.

(12) In the recovery method according to the third aspect of the present invention, the optical member of the sheet piece in which the optical member and the separator that protects the optical member are detachably stacked is a non-defective optical member that does not include a defect. Or determining whether the optical member is a defective optical member including the defect; winding at least the separator around the tip of a knife edge among the sheet pieces, and transferring the sheet piece; A step of pressing the defective optical member toward the separator at the tip of the knife edge when it is determined that the optical member is the defective optical member; Recovering the sheet piece including the defective optical member that has been transferred.

According to the collection device described in (1) above, the determination unit determines whether the optical member is a good optical member or a defective optical member. When the optical member is a non-defective product, only the separator of the sheet piece is wound around the tip of the knife edge by the transfer unit. On the other hand, when the optical member is a defective product, the sheet piece is wound around the tip of the knife edge by the transfer unit. In this case, since the jig moves to a position facing the tip of the knife edge, the defective optical member is pressed so as not to peel from the separator at the tip of the knife edge. Then, the sheet piece including the defective optical member is recovered by the recovery unit.
Thereby, it becomes possible to collect | recover the optical member containing a fault effectively. Furthermore, since the defective optical member and the separator can be simultaneously recovered by the recovery unit, it is possible to provide a recovery device having a simple configuration.

According to the collection device described in (2) above, since the jig has the recess, the sheet piece is sandwiched between the recess and the tip of the knife edge. Thereby, since the defective optical member can be pressed toward the separator, it is possible to more effectively prevent the defective optical member from being separated from the separator.
According to the collection device described in (3) above, the pressing piece presses the sheet piece, whereby the sheet piece is sandwiched between the pressing member and the knife edge. Thereby, since the defective optical member is pressed toward the separator, the defective optical member and the separator can be efficiently recovered at the same time.

According to the collection device described in (4) above, it is possible to reliably prevent the pressing member from contacting the jig.
According to the bonding system described in (5) above, the defective optical member is recovered by the recovery device, and the non-defective optical member is bonded to the bonding target object by the bonding roller. Therefore, it is possible to efficiently classify defective optical members and non-defective optical members by providing the collection device and the bonding roller.

According to the bonding system described in (6) above, when the jig moves to a position facing the tip of the knife edge, the first moving mechanism prevents the bonding roller from interfering with the jig. It becomes possible to move the bonding roller.
According to the bonding system described in (7) above, when the jig moves to a position facing the tip of the knife edge, the second moving mechanism prevents the jig from interfering with the bonding roller. The jig can be moved.

According to the bonding system as described in said (8), when a press member presses a sheet piece, a sheet piece is pinched | interposed between a press member and a knife edge. Thereby, since the defective optical member is pressed toward the separator, the defective optical member and the separator can be efficiently recovered at the same time. Moreover, it becomes possible to move a press member with a jig | tool with a 2nd moving mechanism so that a press member may not interfere with a bonding roller.

According to the bonding system as described in said (9), it becomes possible to prevent reliably that a press member contacts a jig | tool.
According to the bonding system described in the above (10), since the detection device is provided, it is possible to reliably classify whether the optical member is a good optical member or a defective optical member. Become.
According to the bonding system as described in said (11), since the sheet piece is cut | disconnected in the thickness direction with the cutting device, it becomes possible to bond only a non-defective optical member efficiently to a bonding target object. .

According to the collection method described in the above (12), it is possible to effectively collect the defective optical member including the defect by pressing it toward the separator.

It is a figure which shows schematic structure of the bonding system concerning one Embodiment of this invention. It is a top view which shows the liquid crystal panel which is an example of the bonding target object. 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 the collection | recovery apparatus in the bonding process of the same embodiment. It is a figure which shows the bonding apparatus and collection | recovery apparatus in the fault recovery process of the same embodiment. It is a figure which shows the processing flow of the collection | recovery method of the same embodiment. In the same 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 the collection | recovery apparatus of the same embodiment. It is a figure which shows the 2nd modification of the collection | recovery apparatus of the same embodiment.

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

FIG. 1 is a diagram showing a schematic configuration of the bonding system of the present 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 portion of the optical member F13 including the defect from the optical sheet F including the optical member F1 from the path toward the bonding area A1, that is, a bonding system. 1 can bond the optical member F10 which does not contain a fault 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 showing 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. A range that falls within the outer periphery of the liquid crystal layer P3 in a plan view of the liquid crystal panel P is a display region P4.

FIG. 3 is a cross-sectional view showing a configuration example of the optical sheet. The optical sheet F of this example has a long belt shape, and a cross section orthogonal to the longitudinal direction of the optical sheet F 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 to the liquid crystal panel P 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 does not include 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 1st film F7 and the 2nd film F8 are protective films which protect a polarizer, for example. 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 capable of obtaining 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 (F10, F13) partitioned in the longitudinal direction by the cut lines can be formed.
The bonding system 1 includes a bonding sheet of a non-defective sheet piece (F10) in which the optical member F1 does not include a defect among a plurality of sheet pieces, and each liquid crystal panel P conveyed from the upstream of the liquid crystal display element production line. Can be bonded in the bonding area A1. The bonding system 1 can collect the defective sheet piece (F13) in which the optical member F1 includes a defect without bonding the liquid crystal panel P to the liquid crystal panel P among the plurality of sheet pieces.

In this 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 F is, for example, not less than the length of the short side of the display region P4 of the liquid crystal panel P and outside the liquid crystal panel P in the direction parallel to the short side of the display region P4. It is set to below the size. 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.

Note that the bonding system 1 may be configured such that the liquid crystal panel P is conveyed in a direction parallel to the short side of the display region P4 and bonded to the optical member F1 conveyed 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. The transport device 3 includes a transport device 3 that can feed out the optical sheet F from a 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. That is, the conveyance device 3 conveys the optical sheet F in which the separator F3 and the bonding sheet F5 are integrated.

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 includes a recovery device 2, a bonding device 9, and a control device 10, and further preferably includes a detection device 7 and a cutting device 8.
The detection device 7 is disposed downstream of the conveyance path with respect to the optical sheet supply unit 4 and detects a defect of the optical member F1. The cutting device 8 is disposed downstream of the detection path with respect to the detection device 7 and performs a half cut on the optical sheet F. The collection device 2 is disposed downstream of the cutting path with respect to the cutting device 8. The bonding apparatus 9 is arrange | positioned in bonding area A1. The control device 10 controls each part of the bonding system 1.

The optical sheet supply unit 4 of the transport device 3 is constituted 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 is attached to the roller described above, and can measure the distance (conveyance distance) by which the optical sheet F is conveyed based on the rotation angle of the roller 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.

The configuration of the transport device 3 can be changed as appropriate so that the optical sheet can be transported through a predetermined transport path. 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 includes an illumination unit 11 that can irradiate the optical sheet F with light, and a light detection unit 12 that detects the light emitted from the illumination unit 11. The light detection unit 12 can detect a change in the light that is irradiated from the illumination unit 11 and passes through the optical member F1 (at least one of reflection and transmission) due to the presence or absence of a defect in the optical member F1. That is, the presence / absence of a defect is detected based on changes in the light profile, light intensity, etc. received by the light detector 12. 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, optical This is a portion or the like that becomes a bright spot due to distortion of the member F1 or material deviation.

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 (detection result) 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.

The configuration of the detection device 7 can be changed as appropriate so that the defect of the optical member F1 can be detected. For example, the detection device 7 may include a determination unit 10a that determines the presence or absence of a defect based on the detection result of the photodetector 12, and may output the determination result of the determination unit 10a to the control device 10. The detection device 7 may output the determination result of the determination unit 10a 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. Such an optical sheet, for example, is inspected for defects by another device before being conveyed to the detection device 7, and a code indicating the position of the defect is optical based on the inspection result by the other device. It is formed on a sheet.

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 of this embodiment includes a cutting blade 13 and a drive unit 14. The cutting blade 13 is provided so as to be able to advance and retreat toward the optical member F1 from the side opposite to the separator F3 with respect to the optical member F1, and can cut the optical member F1. The drive unit 14 can move the cutting blade 13 forward and backward 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 cut line L <b> 1 is formed across the entire width of the optical sheet F. The cut lines L1 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 cut lines L1, and each of the sections sandwiched between a pair of cut lines L1 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 cut line L1 in the thickness direction of the optical sheet F and the position of the cut line L1 in the longitudinal direction can be controlled. The cutting device 8 includes, for example, a round blade cutter and a drive unit, and the drive unit brings the round blade cutter into contact with the optical sheet F and moves (crosses) in the width direction of the optical sheet F, so that the optical sheet F is half-cut. The structure which cuts 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 defect position information described above, and refers to a section corresponding to the unit length in the longitudinal direction of the optical member F1 from the first cut line L1 formed by the cutting device 8 (hereinafter, the next sheet). It is determined whether or not a defect of the optical member F1 exists in one section). The control device 10 determines the position of the cut line L1 to be formed next depending on whether or not a defect exists in the section of the next sheet piece, and the formation position of the cut line L1 on the optical sheet F The cut line position information indicating is generated.

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. That is, when the optical sheet F is conveyed by a unit length from the position where the first cut line L1 is formed, the control device is configured so that the cutting device 8 forms the second cut line L2 at this timing. 10 controls the drive unit 14.

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 conveying apparatus 15 which can convey liquid crystal panel P bonded with the non-defective bonding sheet | seat F9 to bonding area A1, as shown in FIG. The panel transport device 15 includes a holding unit 16, a panel moving unit 17, and a conveyor 18.
The holding unit 16 can hold the liquid crystal panel P. The panel moving part 17 can move the panel holding part 16 from the carrying-in area where the liquid crystal panel P is carried into the bonding system 1 to the bonding area A1. The conveyor 18 can send 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 carried to the carry-in area from the upstream side of the liquid crystal display element production line by a conveyor or the like by vacuum suction 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 be moved.

The panel holding 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 at the timing when the non-defective sheet piece F10 formed by the cutting device 8 is conveyed to the bonding area A1. The

FIG. 6 is a diagram showing a collection device and a 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 and 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 sheet piece F13, ie, the defective product bonding sheet | seat F12, with the separator F3.

The collection device 2 includes a transfer unit 3, a determination unit 10a, a guide unit 22, and a collection unit 21. The transfer unit 3 transfers at least the separator F3 around the tip 19 of the knife edge 20 among the sheet pieces (F10, F13) in which the optical member F1 and the separator F3 are laminated. That is, the transfer unit 3 has a knife edge, and the sheet piece (F10, F13) is wound around the knife edge 20 and transferred (conveyed) using the separator F3 as a carrier. The determination unit 10a determines whether the sheet piece (F10, F13) transferred to the knife edge 20 is a defective sheet piece F13 or a non-defective sheet piece F10. The guide part 22 guides the defective product bonding sheet F12 so that the defective product bonding sheet F12 of the defective product sheet pieces F13 is not separated from the separator F3 by the knife edge 20. The collection unit 21 collects the defective sheet piece F <b> 13 that has been transferred via the tip 19 of the knife edge 20.

The transfer unit 3 according to the present embodiment includes the knife edge 20 and a roller on which the separator F3 is stretched together with the knife edge 20 among the plurality of transport rollers 24 constituting the transport device 3. One of the rollers 24 is a guide roller 25 that is arranged downstream of the knife edge 20 in the conveyance path.

The determination unit 10a of the present embodiment is included in the control device 10. The determination unit 10a of the control device 10 according to the present embodiment has the sheet pieces (F10, F13) conveyed to the knife edge 20 based on the sheet position information, the defect position information, and the score line position information. It is determined whether it is a defective sheet piece F13 or a non-defective sheet piece 10.

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 includes a jig 29 that presses the defective product bonding sheet F12 toward the separator F3. Furthermore, the guide unit 22 preferably includes a second moving unit (second moving mechanism) 30. The second moving unit 30 moves the jig 29 to a position facing the tip 19 of the knife edge 20. That is, the second moving unit 30 is between the first position X1 that contacts the defective sheet piece F13 that passes through the knife edge 20 and the second position X2 that does not contact the non-defective sheet side that passes through the knife edge 20. Then, the jig 29 is moved.

The knife edge 20 of the present embodiment has a columnar shape extending in the width direction of the optical sheet F, and has an acute angle (0 °) with respect to the first surface 23 facing the optical sheet F conveyed to the knife edge 20 and the first surface 23. And a second surface 24 having an angle of greater 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 tip 19 and the guide roller 25. Furthermore, the separator F3 is bent with the front end portion 19 as a fulcrum by being transported 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 relative to the transport path. 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 first moving mechanism (hereinafter referred to as a first moving unit 27) that can move the bonding rollers 26. When the jig 29 is moved to a position facing the tip 19 of the knife edge 20, the first moving unit 27 moves the bonding roller 26 to a position outside the movement path of the jig 29.
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 arranged at the third position X3 is arranged at the tip of the non-defective bonding sheet F9 via the tip portion 19. Yes. The liquid crystal panel P conveyed to the bonding area A1 is conveyed by the conveyor 18 between the pair of bonding rollers 26 arranged at the third position X3.
Furthermore, the bonding roller 26 winds only the separator F3 with the knife edge 20 when the determination unit 10a determines that the optical member F1 is the non-defective optical member F9. Thereafter, the bonding roller 26 bonds the non-defective optical member F9 separated from the separator F3 to the liquid crystal panel P that is the object to be bonded.

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 the liquid crystal panel P and the non-defective bonding sheet F <b> 9 carried between the pair of bonding rollers 26 during the bonding process. In this way, the non-defective bonding sheet F9 is bonded to the liquid crystal panel P by pressing the pair of bonding rollers 26 together. 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 portion 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 come into contact with the non-defective bonding sheet F9 via 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 preferably has a recess 28. During the defect recovery process (see FIG. 7), the jig 29 is arranged at the first position X1 so that the concave portion 28 faces the tip 19 of the knife edge 20. As a result, the sheet piece is sandwiched between the recess 28 and the tip 19 of the knife edge 20. The concave portion 28 of the jig 29 has a shape bent along the distal end portion 19 of the knife edge 20 when the jig 29 is disposed at the first position X1. In the present embodiment, the recess 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.

The first position X1 is set so that the concave portion 28 of the jig 29 arranged at the first position X1 surrounds the tip 19 in the vicinity of the knife edge 20. The distance between the concave portion 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 collection 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 disposed at the fourth position X4 does not interfere with the jig 29 disposed 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 recovery 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 portion 28 of the jig 29 arranged at the first position X1. , Pressed toward the separator F3. The jig 29 bends the defective product bonding sheet F12 so that at least a part of the defective product bonding sheet F12 contacts the separator F3 bent at the front end portion 19 on the downstream side of the transport path from the front end portion 19. Let In the present embodiment, the shape of the concave portion 28 of the jig 29 and the first position X1 so 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 second moving unit 30 can move the jig 29 between the first position X1 and the second position X2. The second 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 second moving unit 30 to cause the second moving unit 30 to execute the jig placement process and the jig placement / retreat process.

The first moving unit 27 can move the pair of bonding rollers 26 between the third position X3 and the fourth position X4. The first 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 1st moving part 27, and can make the 1st moving part 27 perform each of a bonding roller arrangement | positioning process and a bonding roller arrangement | positioning withdrawal process.

The control device 10 according to the present embodiment includes 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. A program is recorded in the storage unit of the control device 10. This program causes each part of the bonding system 1 to execute processing for eliminating the defective sheet piece F13 by causing the arithmetic processing unit to control each part of the bonding system 1.
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 the present 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.

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

The bonding method of the present embodiment executes detection processing S1 and sheet piece forming processing S2. The detection process S1 detects a defect of the optical member F1 of the optical sheet F. In the sheet piece forming process S2, cut lines are formed at a plurality of positions in the conveyance direction of the optical sheet F in the part where the detection process S1 is performed, thereby forming a non-defective sheet piece F10 or a defective sheet piece F13.

As shown in FIG. 8, the control device 10 according to the present embodiment controls the transport device 3 to cause the transport device 3 to execute a transport process. The conveyance process is a process of conveying the separator F3 along the conveyance 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 has determination process S3, separation process S4, panel conveyance process S5, bonding process S6, and bonding process S6.
In the determination process S3, it is determined whether or not the sheet piece formed in the sheet piece forming process S2 and directed toward the tip 19 of the knife edge 20 is a non-defective sheet piece F10. The separation process S4 separates the non-defective bonding sheet F9 and the separator F3 of the non-defective sheet piece F10 from each other when the sheet piece toward the tip 19 of the knife edge 20 is the non-defective sheet piece F10. Panel conveyance process S5 conveys the bonding target object (liquid crystal panel P) to bonding area A1 synchronizing with the timing at which the non-defective sheet piece F10 is conveyed to bonding area A1. Bonding process S6 bonds the non-defective bonding sheet F9 separated from the separator F3 in the separation process S4 to the object to be bonded. Separator collection process S7 collects separator F3 separated from non-defective bonding sheet F9 in separation process S4.

The control device 10 of 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 (determination process S3 “Yes”), the control device 10 controls the collection unit 21 to separate it into the collection unit 21. Process S4 and separator recovery process S7 are executed. Moreover, the control apparatus 10 controls the panel conveying apparatus 15, makes the panel conveying apparatus 15 perform panel conveying process S5, controls the bonding apparatus 9, and makes the bonding apparatus 9 perform bonding process S6. . Thereby, the non-defective bonding sheet F9 separated in the separation process S4 is bonded to the liquid crystal panel P.

Moreover, when the sheet piece which faces the front-end | tip part 19 of the knife edge 20 is the defective sheet piece F13 (determination process S3 "No"), the bonding method of this embodiment is panel evacuation process S8 and defect recovery process. S9 is executed. Panel evacuation process S8 stops carrying in of the bonding target object (liquid crystal panel P) to bonding area A1, or retracts a bonding target object from bonding area A1. In the defect collecting process S9, the defective product bonding sheet F12 is collected together with the separator F3 after the panel retracting process S8.

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 transport of the liquid crystal panel P is stopped. Then, the control apparatus 10 makes the guide part 22 and the collection | recovery part 21 perform defect collection process S9, and collect | recovers the defective article bonding sheet | seat F12 and the separator F3.

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 bonding roller arrangement evacuation process S10 for moving the pair of bonding rollers 26 arranged to the fourth position X4 is executed. After the bonding roller arrangement / retraction process S10 is completed, a jig arrangement process S11 for moving the jig 29 arranged at the second position X2 to the first position X1 is executed. And after completion | finish of this jig | tool arrangement | positioning process S11, the fault recovery process S9 with respect to the defective sheet piece F13 which arrives at the front-end | tip part 19 of the knife edge 20 next is performed.

When two or more non-defective sheet pieces F <b> 10 are continuously conveyed to the bonding area A <b> 1, the bonding process S <b> 6 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.

In the control device 10 of the present embodiment, after the pasting process S6 for the previous sheet piece is completed, the panel conveying device 15 is controlled to execute the panel retracting process S8. After the panel evacuation process S8 is completed, the first moving unit 27 is controlled to cause the first moving unit 27 to execute the bonding roller arrangement / retreat process S10. After the bonding roller arrangement / retraction process S10 ends, the second moving unit 30 is controlled to cause the second moving unit 30 to execute the jig arrangement process S11. After the end of the jig placement process S11, the panel withdrawal process S8 and the defect recovery process S9 for the next sheet piece are executed.

In the bonding method of this embodiment, when the sheet piece following the defective sheet piece F13 that is the target of the defect collection process S9 is the non-defective sheet piece F10 (determination process S3a “Yes”), the sheet is arranged at the first position X1. The jig retracting process S12 for moving the jig 29 being moved to the second position X2, and the pair of bonding rollers 26 arranged at the fourth position X4 after the jig retracting process S12 is finished. The bonding roller arrangement process S13 that moves to the third position X3 is executed. After completion of the bonding roller arrangement process S13, a separation process S4, a panel transport process S5, a bonding process S6, and a separator collection process S7 for the non-defective sheet piece F10 that arrives at the tip 19 of the knife edge 20 are executed. .

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 holds the position of the pair of bonding rollers 26 and the position of the jig 29. The process is continuously performed on two or more defective sheet pieces F13.

The control device 10 of the present embodiment controls the second moving unit 30 to cause the second moving unit 30 to execute the jig retracting process S12 after the end of the defect collecting process S9 for the previous sheet piece. After the jig evacuation process S12 is completed, the first moving unit 27 is controlled to cause the first moving unit 27 to execute the bonding roller arrangement process S13. After completion of the bonding roller arrangement process S13, a separation process S4, a panel transport process S5, a bonding process S6, and a separator recovery process S7 for the next sheet piece are executed.

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 executing control of a collecting device that collects optical members including defects, and wraps a sheet piece in which an optical member and a separator are detachably stacked around a tip of a knife edge. Determining whether the optical member of the sheet piece to be 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 it is determined that the optical member of the sheet piece transferred to the tip portion of the edge is the defective optical member, the defective optical member is pressed toward the separator at the tip portion 19 of the knife edge 20. And collecting a sheet piece including the defective optical member transferred via the knife edge, and causing a computer to execute the program. It is a lamb.

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.

10 includes a pressing member 31 that presses a sheet piece wound around the tip 19 of the knife edge 20 toward the knife edge 20. Thus, the defective product optical member (defective product bonding) is obtained by sandwiching the defective product sheet piece F13 passing through the tip 19 of the knife edge 20 between the pressing member 31 and the second surface 24 of the knife edge 20. The sheet F12) is pressed 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. Further, the jig 29 and the pressing member 31 are moved by the second moving unit 30.

In the bonding process S6, the pressing member 31 is disposed at the fifth position X5 that does not contact the non-defective bonding sheet F9 via the tip 19 of the knife edge 20. 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 2nd 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 disposed at the sixth position X6 presses the defective 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. It is suppressed that the bonding sheet F12 is detached from the separator F3 before being wound onto the winder 5. Furthermore, 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.

11 includes a jig 29, a pressing member 31, and a second moving unit 30 (second moving mechanism). The jig 29 of the present example rotatably holds the pressing member 31 at the end of the recess 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 the bonding process S6, the peeling suppression unit 32 is disposed at the seventh position X7 that does not contact the non-defective bonding sheet F9 via the tip 19 of the knife edge 20. Further, during the defect recovery process S <b> 9, the jig 29 is disposed at the first position X <b> 1 that contacts the defective sheet piece via the knife edge 20, and the pressing member 31 is connected to the second surface 24 of the knife edge 20. The peeling suppression unit 32 is arranged at the eighth position X8 so that the defective product bonding sheet F12 and the separator F3 are sandwiched between them. The 2nd moving part 30 is controlled by the control apparatus 10, and between each of the 7th position X7 and the 8th position X8 so that each of the jig | tool 29 and the press member 31 may not interfere with a bonding roller. The peeling suppression unit 32 can be moved.

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 2nd 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 second moving unit 30 can be simplified as compared to the configuration of moving to the position.

The jig 29 and the pressing member 31 may be fixed to each other by a fixing member different from 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 May be used. 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 via the distal end portion 19 is not substantially separated from the separator F3 is described, but even if a part of the defective product bonding sheet F12 is 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.

Said 2nd moving part 30 and 1st moving part 27 may be contained in one moving mechanism containing the link mechanism which can move the bonding roller 26 and the jig | tool 29 in response, This movement 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)
DESCRIPTION OF SYMBOLS 7 ... Detection apparatus 8 ... Cutting apparatus 9 ... Pasting apparatus 10 ... Control apparatus (determination part)
DESCRIPTION OF SYMBOLS 19 ... Tip part 20 ... Knife edge 21 ... Collection | recovery part 26 ... Pasting roller 27 ... 1st moving part (1st moving mechanism)
28 ... Concave surface 29 ... Jig 30 ... Second moving part (second moving mechanism)
31 ... Pressing member F ... Optical sheet F1 ... Optical member F3 ... Separator X1 ... First position F9 ... Good product bonding sheet (good product optical member)
F10: Non-defective sheet piece F11: Defect F12: Defective product bonding sheet (defective product optical member)
F13 ... Defective sheet piece

Claims (12)

1. A transfer unit that has a knife edge and that winds and transfers at least the separator around the tip of the knife edge among the sheet pieces in which the optical member and the separator protecting the optical member are detachably stacked;
   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 the defect;
   When the determination unit determines that the optical member is the defective optical member, the jig is moved to a position facing the tip portion of the knife edge and presses the defective optical member toward the separator. When;
   A collection unit for collecting the sheet piece including the defective optical member transferred via the tip portion of the knife edge;
   A recovery device comprising:
2. The jig has a recess bent along the tip of the knife edge;
   The sheet piece is sandwiched between the recess and the tip of the knife edge;
   The collection device according to claim 1.
3. The collection device according to claim 1 or 2, further comprising a pressing member that presses the sheet piece wound around the tip portion of the knife edge toward the knife edge.
4. The recovery device according to claim 3, wherein a relative position of the pressing member with respect to the jig is fixed.
5. A recovery device according to claim 1 or claim 2;
   When the determination unit determines that the optical member is the non-defective optical member, only the separator is wound up by the knife edge, and then the optical member separated from the separator is attached to a bonding object. A plurality of bonding rollers to be combined;
   A bonding system comprising:
6. 6. A first moving mechanism that moves the bonding roller to a position deviated from a movement path of the jig when the jig is moved to a position facing the tip of the knife edge. The bonding system as described in.
7. The bonding system according to claim 5, further comprising a second moving mechanism that moves the jig to a position facing the tip of the knife edge.
8. The recovery device includes a pressing member that presses the sheet piece wound around the tip end of the knife edge toward the tip end of the knife edge;
   The pressing member is moved by the second moving mechanism;
   The bonding system according to claim 7.
9. The bonding system according to claim 8, wherein a relative position of the pressing member to the jig is fixed.
10. The bonding system according to claim 5, further comprising a detection device that detects the defect of the optical member.
11. The bonding system according to claim 5, further comprising a cutting device that cuts the optical member along a thickness direction thereof to form the sheet piece.
12. The optical member of the sheet piece in which an optical member and a separator that protects the optical member are detachably stacked is a non-defective optical member that does not include a defect, or a defective optical member that includes the defect. Determining whether or not;
    A step of winding and transferring at least the separator of the sheet pieces around the tip of a knife edge;
    Pressing the defective optical member toward the separator at the tip of the knife edge when the optical member of the sheet piece is determined to be the defective optical member;
    Collecting the sheet piece including the defective optical member transferred via the tip of the knife edge;
    A recovery method including:

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