KR102189770B1 - Bonding apparatus, bonding method, optical-display-device production system, and optical-display-device production method - Google Patents

Abstract

The bonding device of the present invention is a bonding device 100 for bonding a sheet piece F1X to an optical display component P, and the optical member sheet FX is wound together with a separator sheet F3a from the master roll RX. The unwinding portion 111 to be shipped out, the cut portion 115 for forming the sheet piece F1X by cutting the optical member sheet FX while the separator sheet F3a remains, and the sheet piece F1X are formed into a separator sheet ( A dust collector 10 disposed between the bonding portion 150 peeled off from F3a and bonded to the optical display component P, and the cut portion 115 and the bonding portion 150 to remove dust from the sheet piece F1X Includes.

Description

Bonding device, bonding method, production system of optical display device, and production method of optical display device {BONDING APPARATUS, BONDING METHOD, OPTICAL-DISPLAY-DEVICE PRODUCTION SYSTEM, AND OPTICAL-DISPLAY-DEVICE PRODUCTION METHOD}

The present invention relates to a bonding device, a bonding method, a production system for an optical display device, and a production method for an optical display device.

This application claims priority based on Japanese Patent Application No. 2014-141317 for which it applied to Japan on July 9, 2014, the contents of which are incorporated herein by reference.

The apparatus described in Patent Document 1 is known as an apparatus for bonding a sheet material to an object to be adhered.

The device of Patent Document 1 cuts a long sheet material into a predetermined size and holds it in the head. Then, in the apparatus of Patent Document 1, the head is moved to a stage on which the object to be adhered is placed, the head and the object to be adhered are positioned, and then the head is pressed onto the object to transfer the sheet material to the object to be adhered.

Patent Literature 1: Japanese Patent No. 4482757

In the apparatus of Patent Document 1, the shape of the head is made into an arc shape so that bubbles do not occur when transferring the sheet material to the object to be adhered. However, dust, such as chips, generated when cutting a long sheet material is liable to adhere to the cut sheet material. Therefore, when transferring the sheet material to the to-be-adhered object, dust tends to get caught between the sheet material and the to-be-adhered object. In addition, air bubbles may be generated between the sheet material and the object to be adhered due to the entrainment of dust. Therefore, product quality cannot be improved.

It is an object of the present invention to provide a bonding device, a bonding method, a production system for an optical display device, and a production method for an optical display device, which can increase product quality by suppressing the entrainment of dust when transferring a sheet piece. have.

In order to achieve the above object, the present invention employs the following means.

(1) That is, a bonding device according to an aspect of the present invention is a bonding device for bonding a sheet piece to an optical display component, comprising: a unwinding portion for unwinding an optical member sheet together with a separator sheet from a disk roll; and the optical member Between the cut portion for forming the sheet piece by cutting the sheet while remaining the separator sheet, a bonding portion for peeling the sheet piece from the separator sheet and bonding to the optical display component, and between the cut portion and the bonding portion It is disposed and includes a dust collecting device for removing dust from the sheet piece.

(2) In the bonding device described in the above (1), the dust collecting device pinches a part in the conveyance direction of the sheet piece conveyed to the bonding portion from above and below, and makes the surface contact the surface of the sheet piece. A first roll pair constituted by a pair of first rolls for removing dust from the sheet piece, and at least one surface of the pair of first rolls is a first capable of removing dust from the sheet piece You may have adhesive force.

(3) In the bonding apparatus described in the above (2), the first adhesive force may be smaller than the adhesive force between the sheet piece and the separator sheet.

(4) In the bonding device according to (2) or (3), a first adhesive sheet may be detachably wound around the first roll having the first adhesive force.

(5) In the bonding device according to any one of the above (2) to (4), wherein the dust collecting device sandwiches the first roll pair from above and below, and further includes a surface to the first roll pair, respectively. Including a second roll pair constituted by a pair of second rolls to remove dust from the first roll by contacting, among the pair of second rolls, the first roll having the first adhesive force and facing The surface of the second roll to be described may have a second adhesive force greater than the first adhesive force.

(6) In the bonding device described in the above (5), a second adhesive sheet may be detachably wound around the second roll having the second adhesive force.

(7) The bonding device according to any one of (1) to (6) above, comprising a sheet stage for supporting the sheet piece from the separator sheet side, and a bonding stage on which the optical display component is placed, , The bonding portion is rolled along the curvature of the holding surface while pressing the curved holding surface against the sheet piece stopped on the sheet stage, thereby peeling the sheet piece from the separator sheet and holding it on the holding surface. In addition, a bonding head for bonding the sheet piece held on the holding surface to the optical display component placed on the bonding stage may be included.

(8) In the bonding apparatus described in the above (7), after the sheet piece is peeled off from the separator sheet by the bonding head, it includes a winding portion for winding up the separate separator sheet, and the winding portion includes the The first period immediately after the bonding head presses the holding surface against the sheet piece to start rolling, rotates in the direction in which the separator sheet is released, and the transmission ends after the first period has elapsed. The second period until it becomes, may be rotated in the direction in which the separator sheet is wound.

(9) In the bonding device according to (7) or (8) above, on the bonding stage, a stacking plate is provided adjacent to the optical display component, and in the bonding head, the holding surface is an upper surface of the stacking plate. After being pressed against, the sheet piece held on the holding surface may be bonded to the optical display component by continuously rolling the upper surface of the laminated plate and the upper surface of the optical display component.

(10) A production system for an optical display device according to a first aspect of the present invention is a production system for an optical display device formed by bonding an optical member to an optical display component, wherein the sheet piece as the optical member is bonded to the optical display component. The bonding device described above is included, and the bonding device is the bonding device according to any one of (1) to (9) above.

(11) A production system for an optical display device according to a second aspect of the present invention is a production system for an optical display device formed by bonding an optical member to an optical display component, wherein a sheet piece larger than the optical member is provided to the optical display component. A bonding device to be bonded, a detection device for photographing the optical display component to which the sheet piece is bonded, and detecting a cut line of the sheet piece based on the imaged data, and the sheet piece bonded to the optical display component are cut. And a cutting device that cuts out the optical member from the sheet piece by cutting along a line, wherein the bonding device is the bonding device according to any one of (1) to (9) above.

(12) A bonding method according to an aspect of the present invention is a bonding method for bonding a sheet piece to an optical display component, comprising: a unwinding step of unwinding an optical member sheet together with a separator sheet from a master roll; and removing the optical member sheet. , Between the cutting step of forming the sheet piece by cutting the separator sheet while remaining, a bonding step of peeling the sheet piece off from the separator sheet and bonding it to the optical display component, and between the cutting step and the bonding step, And a dust collecting step of removing dust from the sheet piece.

(13) In the bonding method described in (12) above, in the dust collecting step, a part in the conveyance direction of the sheet piece conveyed in the bonding step is pinched from above and below, and the surface is brought into contact with the surface of the sheet piece. A first roll pair constituted by a pair of first rolls to remove dust from the sheet piece is used, and at least one surface of the pair of first rolls is a material capable of removing dust from the sheet piece. 1 You may have adhesive strength.

(14) In the bonding method described in (13) above, the first adhesive force may be smaller than the adhesive force between the sheet piece and the separator sheet.

(15) In the bonding method described in the above (13) or (14), the first adhesive sheet may be detachably wound around the first roll having the first adhesive force.

(16) In the bonding method according to any one of (13) to (15) above, in the dust collecting step, the first roll pair is sandwiched from above and below, and the surface is placed on the first roll pair, respectively. Using a second roll pair constituted by a pair of second rolls which are brought into contact to remove dust from the first roll, and face the first roll having the first adhesive force among the pair of second rolls The surface of the second roll to be described may have a second adhesive force greater than the first adhesive force.

(17) In the bonding method described in the above (16), a second adhesive sheet may be detachably wound around the second roll having the second adhesive force.

(18) In the bonding method according to any one of (12) to (17) above, a supporting step of supporting the sheet piece from the separator sheet side by a sheet stage, and a bonding stage of the optical display component. A placement step of placing on the sheet, and the bonding step includes pressing the curved holding surface of the bonding head with respect to the sheet piece stopped on the sheet stage, and moving the bonding head along the curve of the holding surface, The sheet piece may be peeled off from the separator sheet and held on the holding surface, and the sheet piece held on the holding surface may be bonded to the optical display component placed on the bonding stage.

(19) In the bonding method described in the above (18), after the sheet piece is peeled from the separator sheet by the bonding head, a winding step of winding up the separator sheet as a single layer by a winding portion is included, In the winding step, the first period immediately after the bonding head presses the holding surface against the sheet piece to start rolling, the winding portion is rotated in the direction of unwinding the separator sheet, and the first period has elapsed. Thereafter, in the second period until the end of the transmission, the winding portion may be rotated in a direction in which the separator sheet is wound.

(20) In the bonding method described in the above (18) or (19), on the bonding stage, a stacking plate is provided adjacent to the optical display component, and in the bonding step, the holding surface of the bonding head is After being pressed against the upper surface of the stacking plate, the bonding head continuously rolls the upper surface of the stacking plate and the upper surface of the optical display component, so that the sheet piece held on the holding surface may be bonded to the optical display component.

(21) A production method of an optical display device according to a first aspect of the present invention is a production method of an optical display device obtained by bonding an optical member to an optical display component, wherein a sheet piece as the optical member is bonded to the optical display component. And a bonding step, wherein the bonding step is performed using the bonding method described in any one of (12) to (20).

(22) A production method of an optical display device according to a second aspect of the present invention is a production method of an optical display device obtained by bonding an optical member to an optical display component, wherein a sheet piece larger than the optical member is provided to the optical display component. A bonding step of bonding, a detection step of photographing the optical display component to which the sheet piece is bonded, and detecting a cut line of the sheet piece based on the imaged data, and the sheet piece bonded to the optical display component, And a cutting step of cutting the optical member from the sheet piece by cutting along the cut line, and the bonding step is performed using the bonding method of the substrate according to any one of claims 12 to 20.

Advantageous Effects of Invention According to the present invention, it is possible to provide a bonding device, a bonding method, a production system for an optical display device, and a production method for an optical display device capable of improving product quality by suppressing dust from entering when transferring a sheet piece.

1 is a schematic diagram of a bonding device according to a first embodiment of the present invention.
2 is a perspective view of the periphery of the dust collecting device.
3 is a plan view around the dust collecting device.
4 is a side view of the dust collecting device.
5A is a view showing a step of adhering a sheet piece to a bonding head.
5B is a view showing a step of adhering a sheet piece to a bonding head.
5C is a view showing a step of adhering a sheet piece to a bonding head.
6A is a diagram showing a step of transferring a sheet piece adhered to a bonding head to an optical display component.
6B is a diagram showing a step of transferring a sheet piece adhered to a bonding head to an optical display component.
6C is a diagram showing a step of transferring a sheet piece adhered to a bonding head to an optical display component.
7 is a cross-sectional view of an optical member sheet.
8 is a schematic diagram of a production system for an optical display device according to a first embodiment of the present invention.
9 is a side cross-sectional view of a dust collecting device according to a first modified example of the first embodiment of the present invention.
10 is an enlarged view of a main part of FIG. 9.
11 is a diagram showing a cutting process of a sheet piece in the bonding apparatus according to the second embodiment of the present invention.
12A is a diagram illustrating a method of determining a bonding position of an optical display component and a sheet piece.
It is a figure explaining the method of determining the bonding position of an optical display component and a sheet piece.
13 is a schematic diagram of a production system for an optical display device according to a second embodiment of the present invention.

[First embodiment]

Hereinafter, a bonding device and a production system of an optical display device according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 8.

1 is a schematic diagram of a bonding device 100 of the present embodiment.

The bonding apparatus 100 of this embodiment bonds the sheet piece F1X obtained by half-cutting the long optical member sheet FX to one surface of the optical display component P.

As the optical display component P, for example, a panel type optical display component such as a liquid crystal panel or an organic EL panel can be used. As the optical member sheet FX, for example, a polarizing film, a retardation film, a brightness improving film, or the like can be used. In this embodiment, for example, the polarizing film shown in FIG. 7 is used as the optical member sheet FX.

The optical member sheet FX of FIG. 7 includes a film-shaped optical member main body F1a, an adhesive layer F2a provided on one surface (the upper surface in FIG. 7) of the optical member main body F1a, and an adhesive layer ( A separator sheet F3a detachably laminated on one side of the optical member main body F1a through F2a), and a surface protective film laminated on the other side (lower surface in Fig. 7) of the optical member main body F1a (F4a).

The optical member main body F1a functions as, for example, a polarizing plate, and is bonded over the entire display area of the optical display component P and its peripheral area. The optical member main body F1a is bonded to the optical display component P through the adhesive layer F2a in the state where the separator sheet F3a is separated while leaving the adhesive layer F2a on one side thereof. Hereinafter, a portion of the optical member sheet FX excluding the separator sheet F3a is referred to as a bonding sheet F5. The sheet piece F1X is a sheet piece of the bonding sheet F5 obtained by cutting the elongate bonding sheet F5 into a predetermined size.

The separator sheet F3a protects the adhesive layer F2a and the optical member main body F1a until they are separated from the adhesive layer F2a. The surface protection film F4a is bonded to the optical display component P together with the optical member main body F1a. The surface protection film F4a is disposed opposite to the optical display component P with respect to the optical member body F1a to protect the optical member body F1a. Further, the optical member sheet FX may have a configuration that does not include the surface protective film F4a, or a configuration in which the surface protective film F4a is separated from the optical member main body F1a.

The optical member main body F1a includes a sheet-shaped polarizer F6, a first film F7 bonded to one side of the polarizer F6 with an adhesive or the like, and an adhesive or the like on the other side of the polarizer F6. It has a 2nd film (F8) which is bonded together. The first film F7 and the second film F8 are protective films for protecting the polarizer F6, for example.

Further, the optical member main body F1a may have a single-layer structure composed of a single optical layer, or may be a laminate structure in which a plurality of optical layers are stacked together. In addition to the polarizer F6, the optical layer may be a retardation film or a brightness improving film. Even if at least one of the first film F7 and the second film F8 is 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 device or an anti-glare treatment, such as anti-glare treatment, good. The optical member main body F1a may not include at least one of the first film F7 and the second film F8. For example, in the case where the first film F7 is omitted in the optical member main body F1a, the separator sheet F3a may be bonded to one surface of the polarizer F6 through the adhesive layer F2a.

As shown in FIG. 1, the bonding device 100 of this embodiment is, for example, a sheet conveying device 110, a dust collecting device 10, a head unit 150 (joining portion), a head moving device 160, and a stage unit. It includes 170 and a control device 190.

The sheet conveying apparatus 110 includes, for example, an unwinding portion 111, a winding portion 112, a nip roll portion 113, a sheet stage 114, and a cut portion 115.

The unwinding portion 111 holds the original roll RX wrapped around the elongated optical member sheet FX, and feeds the optical member sheet FX in the longitudinal direction. The optical member sheet FX has, for example, a width equal to the length of the first side (eg, the short side) of the display area of the optical display component P in the horizontal direction (sheet width direction) orthogonal to the conveyance direction. Have.

Hereinafter, the direction in which the optical member sheet FX (separator sheet F3a) is unwound and conveyed from the unwinding unit 111 is referred to as the sheet conveying direction, the upstream side of the sheet conveying direction is referred to as the sheet conveying upstream side, and the sheet conveying The downstream side of the direction is called the sheet conveyance downstream side.

The cut portion 115 cuts (half-cut) the optical member sheet FX unwound from the master roll RX in the thickness direction while the separator sheet F3a remains. The cut portion 115 has a length equal to the length of the second side (e.g., the long side) of the display area of the optical display component P, for example, in a longitudinal direction in which the optical member sheet FX is orthogonal to the sheet width direction Each time it is fed out, a part of the thickness direction of the optical member sheet FX is cut over the entire width in the sheet width direction.

The cutting part 115 adjusts the advancing and retreating position of the cutting blade so that the separator sheet F3a is not broken by the tension acting during the transportation of the optical member sheet FX (so that the predetermined thickness remains in the separator sheet F3a). It is adjusted and half-cut is performed to the vicinity of the interface between the adhesive layer F2a and the separator sheet F3a. In this case, instead of the cutting blade, a laser cutting device may be used as the cutting unit 115.

In the optical member sheet FX after half-cut, the optical member main body F1a, the adhesive layer F2a, and the surface protection film F4a are cut in the thickness direction, so that the entire sheet width direction of the optical member sheet FX A cut line is formed across the width. The optical member sheet FX is divided into divisions having a length corresponding to the length of the second side of the display area in the longitudinal direction by the cut line. Each of these sections becomes one sheet piece F1X in the bonding sheet F5.

The cutting angle of the optical member sheet FX with respect to the sheet conveyance direction is controlled by the control device 190. For example, an imaging device 15 (refer to FIGS. 2 and 3) for imaging an image of the edge of the optical member sheet FX is disposed at a plurality of sites in the sheet conveyance direction, and a plurality of sites imaged by these imaging devices 15 Based on the image of the edge of, the control device 190 detects the positions of the edges of the plurality of parts. Then, based on the relative positional relationship of the edges of the plurality of portions detected, the control device 190 calculates an inclination angle of the edge at the cut position of the optical member sheet FX with respect to the sheet conveyance direction. Then, the cutting unit 115 cuts the optical member sheet FX at a cutting angle controlled by the control device 190. Accordingly, even when the optical member sheet FX is meandering in the sheet width direction, the optical member sheet FX can be accurately cut in a desired direction.

The sheet stage 114 supports the lower surface (surface of the separator sheet F3a side shown in FIG. 7) of the optical member sheet FX unwound from the master roll RX. The sheet stage 114 is provided, for example, from the sheet conveyance downstream side of the dust collecting position to remove dust from the sheet piece F1X until it reaches a peeling position where the sheet piece F1X is peeled from the separator sheet F3a.

The nip roll part 113 includes a first nip roll 113a and a second nip roll 113b arranged in parallel with each other in the direction of the mutual rotation axis. The first nip roll 113a and the second nip roll 113b rotate in synchronization with each other, so that the separator sheet F3a is rotated from the upstream side of the sheet conveyance to the downstream side of the sheet conveyance (the direction in which the winding part 112 is wound) and the downstream of the sheet conveyance. From the side, it conveys toward the sheet conveyance upstream side (the direction unwinding from the take-up part 112).

After the sheet piece F1X is peeled off from the separator sheet F3a by the bonding head 120, the winding unit 112 winds up the separator sheet F3a that has been formed alone. The winding unit 112 rotates in synchronization with the first nip roll 113a and the second nip roll 113b to wind and unwind the separator sheet F3a.

In the dust collecting device 10, the cut position at which the optical member sheet FX is half-cut by the cut portion 115 and the sheet piece F1X obtained by the half cut are peeled from the separator sheet F3a, and the bonding head ( It is arranged between the peeling positions held at 120). The dust collecting device 10 removes dust from the sheet piece F1X. Details of the dust collecting device 10 will be described later.

The head unit 150 includes, for example, a bonding head 120, a head driving device 130, and a head lifting device 140.

The bonding head 120 includes, for example, a head body portion 121 and an adhesive sheet 122.

The head main body 121 has a flat top surface and a curved surface curved along the traveling direction of the optical member sheet FX so that the bottom surface is convex downward. The pressure-sensitive adhesive sheet 122 is fixed to the lower surface of the head main body 121. As the adhesive sheet 122, for example, adhesive silicone rubber or the like is used. The surface of the adhesive sheet 122 is a curved holding surface 122a that adheres and holds the sheet piece F1X. The holding surface 122a, for example, has a weaker adhesive force than the bonding surface (adhesive layer F2a) of the sheet piece F1X, and repeatedly adheres and peels the surface protection film F4a of the sheet piece F1X. It becomes possible.

The bonding head 120 rolls along the curve of the holding surface 122a while pressing the curved holding surface 122a against the sheet piece F1X supported on the sheet stage 114, so that the sheet piece F1X Is peeled off from the separator sheet F3a and held on the holding surface 122a. The bonding head 120 rolls along the curve of the holding surface 122a while pressing the sheet piece F1X held on the holding surface 122a against the optical display component P placed on the bonding stage 171, The sheet piece F1X is bonded to the optical display component P.

The head driving device 130 includes, for example, a base plate 135, a rotation driving part 136, and a rod part 137.

The bonding head 120 is connected to the rotation support shaft 136a of the rotation drive unit 136 via a rod unit 137 connected to the center of the upper surface of the head body unit 121. The rotation support shaft (136a) is fixed to the base plate (135). The bonding head 120 is freely suspended in rotation on the lower surface of the base plate 135 via the rod portion 137 and the rotation support shaft 136a. The holding surface 122a is, for example, an arc-shaped curved surface centered on the rotation support shaft 136a.

The bonding head 120 rotates around the rotation support shaft 136a in a predetermined angular range by the rotation drive unit 136. Accordingly, adhesion of the sheet piece F1X from the separator sheet F3a to the holding surface 122a, and bonding (transfer) of the sheet piece F1X from the holding surface 122a to the optical display component P Done.

The head lifting device 140 includes a cylinder body portion 141 and a cylinder rod 142. The first end of the cylinder rod 142 is fixed to the upper surface of the base plate 135, and the second end of the cylinder rod 142 is connected to a piston in the cylinder body portion 141. The piston and cylinder rod 142 in the cylinder body 141 move in the vertical direction by the pressure of the air introduced into the cylinder body 141. Accordingly, the bonding head 120 moves in the vertical direction.

The head moving device 160 includes a guide rail 161 and a slider 162. The upper end of the cylinder body 141 is fixed to the slider 162. Accordingly, the head unit 150 is vertically suspended on the slider 162. The guide rail 161 is provided so as to span between the sheet conveying device 110 and the bonding stage 171. The slider 162 reciprocates along the guide rail 161. Accordingly, the bonding head 120 moves between the peeling position at which the sheet piece F1X is peeled off from the separator sheet F3a and the bonding position at which the sheet piece F1X is bonded to the optical display component P.

The head driving device 130, the head lifting device 140, and the head moving device 160 constitute a head drive mechanism for rotating, lifting, and horizontally moving the bonding head 120. The bonding head 120 is driven by the head driving device 130 and the head moving device 160 to rotate and horizontally move, so that the sheet piece F1X supported by the sheet stage 114 and the bonding stage 171 It rolls over the placed optical display part (P). Thereby, adhesion of the sheet piece F1X from the separator sheet F3a to the holding surface 122a and bonding (transfer) of the sheet piece F1X from the holding surface 122a to the optical display component P are performed. .

The bonding head 120 is horizontally moved in the first movement direction (eg, right direction) by the head moving device 160 while rotating in the first rotation direction (eg, clockwise) by the head driving device 130 By doing so, it is possible to roll in a first direction from a first end (eg, a left end) of the holding surface 122a to a second end (eg, a right end). In addition, the bonding head 120 rotates in a second rotation direction (eg, counterclockwise) by the head driving device 130, while the second movement direction (eg, leftward direction) by the head movement device 160 By horizontally moving to, it is possible to move in a second direction from the second end (eg, the right end) of the holding surface 122a to the first end (eg, the left end).

The stage unit 170 includes a bonding stage 171, a stage driving device 172, and a stacking plate 173.

The bonding stage 171 has an arrangement surface 171a on which the optical display component P is placed. The bonding stage 171 is, for example, by adsorbing the lower surface of the optical display component P (the surface opposite to the surface to be bonded to the sheet piece F1X), thereby placing the optical display component P on the placement surface 171a. Keep on.

The laminated plate 173 is a plate-shaped or rod-shaped member disposed along one side of the optical display component P. The stacking plate 173 is fixed on the placement surface 171a. The height of the stacking plate 173 substantially matches the height of the optical display component P. The stacking plate 173 is disposed on the upstream side of the rolling direction AFD rather than the position where the optical display component P is placed.

The optical display component P is disposed adjacent to the stacking plate 173. The optical display component P is fixed on the mounting surface 171a in a state where the end portion is brought into contact with the side surface of the stacking plate 173. Accordingly, the top surface of the optical display component P and the top surface of the stacking plate 173 form a continuous plane.

The laminated plate 173 can be fixed and disposed at at least two places (a first position and a second position) on the bonding stage 171. The first position is a position on the bonding stage 171 corresponding to the case where the transmission direction AFD is set as the first direction (for example, a position on the left side of the optical display component P), and the second position is a transmission It is a position on the bonding stage 171 corresponding to the case where the direction AFD is set as the second direction (for example, a position adjacent to the right side of the optical display component P).

In the bonding head 120, after the holding surface 122a positioned upstream in the bonding direction than the sheet piece F1X is pressed against the upper surface of the stacking plate 173, the bonding head 120 is applied to the stacking plate 173 By continuously rolling the upper surface of and the upper surface of the optical display component P, the sheet piece F1X held on the holding surface 122a is bonded to one surface of the optical display component P. Before bringing the sheet piece F1X into contact with the optical display component P, by making the bonding head 120 run outside of the optical display component P, bonding conditions such as load and speed are determined by the sheet piece ( F1X) Can be uniform throughout.

The stage drive device 172 moves the bonding stage 171 in a direction orthogonal to the rolling direction AFD of the bonding head 120 and the rolling direction AFD of the bonding head 120. In addition, the stage drive device 172 rotates the bonding stage 171 in a horizontal plane. The stage drive device 172 drives the bonding stage 171 to determine the relative bonding position of the optical display component P held on the bonding stage 171 and the sheet piece F1X held on the bonding head 120. Adjust. Accordingly, the optical display component P and the sheet piece F1X are aligned.

The control device 190 includes a computer system. The computer system includes an arithmetic processing unit such as a CPU and a storage unit such as a memory or a hard disk. The control device 190 includes an interface capable of executing communication with external devices of the computer system, and collectively controls operations of various devices constituting the bonding device 100 and various devices outside the bonding device 100. Control.

Hereinafter, the dust collecting apparatus 10 according to the present embodiment will be described with reference to FIGS. 2 to 4.

2 is a perspective view around the dust collecting device 10. 3 is a plan view around the dust collecting device 10. 4 is a side view of the dust collecting device 10.

As shown in FIGS. 2 and 3, the dust collecting device 10 includes a first roll pair 11 and a second roll pair 12.

The 1st roll pair 11 is one roll pair comprised by the pair of 1st rolls 11a, 11b arrange|positioned in mutual rotation axis direction parallel.

Hereinafter, among the pair of 1st rolls 11a, 11b, the 1st roll arrange|positioned on the upper side with the sheet piece F1X interposed is called 1st upper side roll 11a. Among the pair of first rolls 11a and 11b, a first roll disposed on the lower side with the sheet piece F1X interposed therebetween is referred to as a first lower roll 11b. Further, the first upper roll 11a and the first lower roll 11b may be simply referred to as a first roll, respectively.

The first upper roll 11a and the first lower roll 11b rotate in synchronization with each other to convey the half-cut optical member sheet FX from the sheet conveyance upstream side toward the sheet conveyance downstream side.

Each of the first upper roll 11a and the first lower roll 11b is a cylindrical member having a length greater than the sheet width of the optical member sheet FX. Each surface of the first upper roll 11a and the first lower roll 11b has a first adhesive force As1 capable of removing dust from the sheet piece F1X. The first adhesive force As1 is smaller than the adhesive force between the sheet piece F1X and the separator sheet F3a. Thereby, before bonding to the optical display component P, dust on the surface of the sheet piece F1X can be removed while suppressing the sheet piece F1X from peeling off from the separator sheet F3a.

In addition, from the viewpoint of suppressing delamination between layers constituting the sheet piece F1X, the first adhesive force As1 is the optical member main body F1a and the surface protective film F4a constituting the sheet piece F1X. It is less than the adhesive strength of and. From the same point of view, the first adhesive force As1 is the adhesive force between one side of the polarizer F6 and the first film F7, and the adhesion between the other side of the polarizer F6 and the second film F8. Is smaller than each of

The 1st roll pair 11 pinches a part in the conveyance direction of the sheet piece F1X conveyed by the head unit 150 from top and bottom. In this embodiment, the 1st roll pair 11 is the 3rd cutting line and the 4th cutting line from the sheet conveyance upstream side among four cutting lines formed in the optical member sheet FX by the cut part 115 Part of the sheet piece (F1X) partitioned by the cut line is inserted from the top and bottom.

In addition, the arrangement position of the 1st roll pair 11 is not limited to this. The arrangement position of the first roll pair 11 can be appropriately set to a desired position as long as it is between the cut portion 115 and the head unit 150.

The first pair of rolls 11 makes the surface contact the surface of the sheet piece F1X, and removes dust existing on the surface of the sheet piece F1X. Specifically, the first upper roll 11a contacts the surface of the surface protection film F4a constituting the sheet piece F1X to remove dust on the surface of the surface protection film F4a. The first lower roll 11b brings the surface into contact with the surface (lower surface) of the separator sheet F3a to remove dust from the surface of the separator sheet F3a.

The second roll pair 12 is one roll pair constituted by a pair of second rolls 12a and 12b arranged in parallel with each other in the direction of the mutual rotation axis.

Hereinafter, of the pair of second rolls 12a and 12b, a second roll facing the first upper roll 11a is referred to as a second upper roll 12a. Of the pair of second rolls 12a and 12b, a second roll facing the first lower roll 11b is referred to as a second lower roll 12b. In addition, the second upper roll 12a and the second lower roll 12b may be simply referred to as a second roll, respectively.

The second upper roll 12a rotates in synchronization with the first upper roll 11a, and the second lower roll 12b is rotateable in synchronization with the first lower roll 11b. In FIG. 4, the second upper roll 12a rotates in a rotation direction (clockwise direction) opposite to the rotation direction (counterclockwise) of the first upper roll 11a, and the second lower roll 12b is , It rotates in a rotation direction (counterclockwise) opposite to the rotation direction (clockwise) of the first lower roll 11b.

Each of the second upper roll 12a and the second lower roll 12b is a cylindrical member having a length substantially equal to the length of the first roll in the sheet width direction. The second upper roll 12a and the second lower roll 12b sandwich the first roll pair 11 (the first upper roll 11a, the first lower roll 11b) from the top and bottom. Each surface of the second upper roll 12a and the second lower roll 12b has a second adhesive force Fs2 greater than the first adhesive force Fs1 (Fs2>Fs1). Accordingly, dust adhering to the first roll can be removed by the second roll. Therefore, it is possible to effectively maintain the first adhesive force Fs1.

As shown in FIG. 4, the 1st adhesive sheet 13 is wound around the 1st roll pair 11 so that attachment and detachment is possible. Specifically, the first upper pressure-sensitive adhesive sheet 13a is detachably wound around the first upper roll 11a. The first lower pressure-sensitive adhesive sheet 13b is detachably wound around the first lower roll 11b.

Therefore, even when the first adhesive force Fs1 decreases due to adhesion of dust, it is finished by replacing only the first adhesive sheet 13 without replacing the entire first pair of rolls 11. In addition, only one of the first upper adhesive sheet 13a or the first lower adhesive sheet 13b may be replaced as necessary. Therefore, maintenance for maintaining the first adhesive force Fs1 can be efficiently performed.

The second pressure-sensitive adhesive sheet 14 is detachably wound around the second roll pair 12. Specifically, the second upper pressure-sensitive adhesive sheet 14a is detachably wound around the second upper roll 12a. The second lower pressure-sensitive adhesive sheet 14b is removably wound around the second lower roll 12b.

Therefore, even when the second adhesive force Fs2 is lowered due to adhesion of dust, it is finished by replacing only the second adhesive sheet 14 without replacing the entire second roll pair 12. Moreover, only one of the 2nd upper adhesive sheet 14a or the 2nd lower adhesive sheet 14b may be replaced as needed. Therefore, maintenance for maintaining the second adhesive force Fs2 can be efficiently performed. In addition, since the first adhesive force Fs1 is also maintained when the second adhesive force Fs2 is maintained, it is also effective in maintaining the first adhesive force Fs1.

As the first adhesive sheet 13, for example, an adhesive silicone-based, urethane-based adhesive sheet, or the like is used. As the second pressure-sensitive adhesive sheet 14, for example, a urethane-based pressure-sensitive adhesive sheet having an adhesive force greater than that of the first pressure-sensitive adhesive sheet 13 (first adhesive force Fs1) is used. For example, when a silicone-based adhesive sheet is used as the first adhesive sheet 13, a urethane-based adhesive sheet is used as the second adhesive sheet 14.

The exchange of the first adhesive sheet 13 is performed to the extent that the first adhesive force Fs1 is maintained. For example, the replacement of the first adhesive sheet 13 is performed by visually checking the presence or absence of cracks on the surface of the first adhesive sheet 13, so that the adhesive force of the first adhesive sheet 13 is the first adhesive force (Fs1). It may be determined whether or not, and may be performed when the adhesive force of the first adhesive sheet 13 is likely to be less than the first adhesive force Fs1. Similarly, the replacement of the second pressure-sensitive adhesive sheet 14 is carried out to such an extent that the second pressure-sensitive adhesive force Fs2 is maintained.

In addition, the replacement of the first pressure-sensitive adhesive sheet 13 may be performed regularly in consideration of the use period of the dust collecting device 10. The same applies to the replacement of the second pressure-sensitive adhesive sheet 14.

Hereinafter, a bonding method according to this embodiment will be described with reference to FIG. 1.

The bonding method according to the present embodiment is a bonding method for bonding the sheet piece F1X to the optical display component, and includes a unwinding step, a cutting step, a bonding step, and a dust collecting step.

As shown in FIG. 1, in the unwinding step, the elongated optical member sheet FX is unwound from the master roll RX together with the separator sheet F3a.

In the cutting step, the sheet piece F1X is formed by cutting the optical member sheet FX leaving the separator sheet F3a behind.

In the bonding step, the sheet piece F1X is peeled off from the separator sheet F3a and bonded to the optical display component.

The dust collecting step removes dust from the sheet piece (F1X) between the cutting step and the bonding step, more preferably until the sheet piece (F1X) is adhered to the holding surface (122a) of the bonding head 120 do.

Hereinafter, a dust collection step will be described using FIGS. 2 to 4.

2 to 4, in the dust collecting step, a part in the conveyance direction of the sheet piece F1X conveyed in the bonding step is pinched from above and below, and the surface is brought into contact with the surface of the sheet piece F1X. The first roll pair 11 constituted by a pair of first rolls 11a and 11b to remove dust from the sheet piece F1X is used. Each surface of the first rolls 11a and 11b has a first adhesive force As1 capable of removing dust from the sheet piece F1X.

In addition, in the dust collecting step, a pair of second rolls 12a, which remove dust from the first roll by inserting the first roll pair 11 from above and below, and contacting the surface with the first roll pair 11, respectively. The second roll pair 12 constituted by 12b) is used. Each surface of the second rolls 12a and 12b has a second adhesive force As2 greater than the first adhesive force As1 (As2>As1).

Hereinafter, the bonding step will be described using FIGS. 5A to 5C and FIGS. 6A to 6C. First, a process of adhering the sheet piece F1X to the bonding head 120 will be described using FIGS. 5A to 5C.

As shown in FIG. 5A, the bonding head 120 is disposed above the sheet stage 114 in a state where it is inclined with respect to the sheet stage 114. The conveyance of the sheet piece F1X is stopped, and the sheet piece F1X is stopped on the sheet stage 114. The sheet stage 114 supports the sheet piece F1X from the separator sheet F3a side. Then, the bonding head 120 and the sheet piece F1X on the sheet stage 114 are positioned. The bonding head 120 is inclined so that the upstream side in the rolling direction is located below the downstream side in the rolling direction. In the case of the present embodiment, it is inclined so that an end portion on the downstream side of sheet conveyance is located below an end portion on the upstream side of sheet conveyance.

When the bonding head 120 and the sheet piece F1X are positioned, the bonding head 120 descends to a height in contact with the sheet piece F1X by the head lifting device 140. Thereby, the end of the sheet conveyance downstream of the bonding head 120 is pressed onto the end of the sheet conveyance downstream of the sheet piece F1X.

Subsequently, as shown in Fig. 5B, by synchronously driving the rotation drive unit 136 and the head moving device 160, the bonding head 120 is driven from the sheet conveyance downstream side toward the sheet conveyance upstream side (rotation and horizontal movement ). Thereby, the sheet piece F1X gradually adheres to the holding surface 122a from the sheet conveyance downstream side to the sheet conveyance upstream side.

The first period immediately after the bonding head 120 presses the holding surface 122a against the sheet piece F1X to start rolling, the take-up unit 112 and the nip roll unit 113 are the rotation drive unit 136 and the head In synchronization with the drive of the moving device 160, the separator sheet F3a is rotated in the unwinding direction (reverse direction). Thereby, the separator sheet F3a is loosened on the upstream side of the nip roll part 113, and the sheet piece F1X and the separator sheet F3a on the downstream side of the sheet conveyance than the portion applied to the load by the bonding head 120 A, along the curve of the holding surface 122a, it floats upwards of the seat stage 114.

Since the separator sheet F3a is in a loose state, a force for peeling the sheet piece F1X from the holding surface 122a is unlikely to be generated at the end of the sheet piece F1X on the downstream side of the sheet conveyance. Accordingly, the adhesion between the sheet piece F1X and the holding surface 122a is increased, and the adhesion of the sheet piece F1X to the holding surface 122a is reliably performed. Further, by loosening the separator sheet F3a, when the sheet piece F1X is peeled from the separator sheet F3a, instantaneously large peeling force is suppressed from being applied to the separator sheet F3a. Therefore, breakage of the separator sheet F3a is suppressed.

As shown in Fig. 5C, after the above-described first period has elapsed, the second period until the transmission of the bonding head 120 is terminated, the winding unit 112 and the nip roll unit 113 are separated The sheet F3a is rotated in the winding direction (forward direction). Thereby, while the slack of the separator sheet F3a is eliminated, peeling of the sheet piece F1X from the separator sheet F3a is promoted. The timing of switching the rotation direction of the winding part 112 and the nip roll part 113 from the reverse direction to the forward direction is, for example, the adhesion of the sheet piece F1X to the holding surface 122a is 5% to 70%, preferably 10 The timing is completed from% to 50%.

While unwinding and winding the separator sheet F3a by the winding part 112 and the nip roll part 113, the bonding head 120 is always the same by the rotation driving part 136 and the head moving device 160. It continues to drive in the direction. The bonding head 120 rolls along the curvature of the holding surface 122a while pressing the holding surface 122a against the sheet piece F1X, thereby peeling the sheet piece F1X from the separator sheet F3a and removing the holding surface ( 122a).

As described above, the surface protection film F4a of the sheet piece F1X is sequentially adhered to the holding surface 122a of the bonding head 120. The sheet piece F1X adhered to the holding surface 122a is peeled off from the separator sheet F3a, and the adhesive layer F2a (see FIG. 7: the bonding surface with the optical display component P) is exposed. do. The bonding head 120 holding the sheet piece F1X is transferred to the bonding stage 171 on which the optical display component P is placed by the head moving device 160.

In FIGS. 5A to 5C, a process of holding a sheet piece F1X of a defective product having defects in the sheet surface in the bonding head 120 is shown, but the sheet piece F1X of a defective article having defects in the sheet surface is shown in the bonding head. In the case of holding at 120, the same process is performed. For example, the bonding head 120 holding the defective sheet piece F1X is disposed at a position different from the bonding stage 171 by the head driving device 160, and is placed at a position different from the bonding stage 171 (not shown). ). And the sheet piece F1X of a defective article is superimposed on the waste sheet|seat etc. formed in the snap position.

The defects of the sheet piece F1X as described above include, for example, a portion of the inside of the sheet piece F1X where foreign matters consisting of at least one of a solid, a liquid and a gas exist, or irregularities on the surface of the sheet piece F1X. It is a part where a wound exists, a part that becomes a bright spot due to distortion of the sheet piece F1X or the inclination of the material.

Next, a process of bonding (transferring) the sheet piece F1X adhered to the bonding head 120 to the optical display component P will be described using FIGS. 6A to 6C.

As shown in FIG. 6A, the bonding head 120 holding the sheet piece F1X is conveyed by the head lifting device 140 with the adhesive layer F2a (see FIG. 7) turned downward. It rises to a height that does not interfere with the device 110. And the bonding head 120 is conveyed by the head moving device 160 to the position above the bonding stage 171 on which the optical display component P is placed.

When the bonding head 120 moves from the top of the sheet stage 114 to the top of the bonding stage 171, for example, the four corners of the sheet piece F1X held on the holding surface 122a are the first imaging device 181 It is imaged by The image of the sheet piece F1X picked up by the first imaging device 181 is image analyzed by a first image processing device (not shown), and the positions of the four corner portions of the sheet piece F1X are detected. Information about the position of the corner portion of the sheet piece F1X detected by the first image processing device is sent to the control device 190. The control device 190 confirms the arrangement position of the sheet piece F1X with respect to the bonding head 120 based on the information detected by the first image processing device.

The optical display component P held by the bonding stage 171 is imaged by the 2nd imaging device 182, for example. The second imaging device 182 captures, for example, an alignment mark or a black matrix provided on the optical display component P as an alignment reference. The image of the optical display component P captured by the second imaging device 182 is image analyzed by a second image processing device (not shown), and the position of the alignment reference is detected. Information about the position of the alignment reference of the optical display component P detected by the second image processing device is sent to the control device 190. The control device 190 confirms the arrangement position of the optical display component P with respect to the bonding stage 171 based on the information detected by the second image processing device.

The control device 190 is based on the arrangement position of the sheet piece F1X with respect to the bonding head 120 and the arrangement position of the optical display component P with respect to the bonding stage 171, the stage driving device 172 Control. The control device 190 uses the stage drive device 172 to horizontally move the bonding stage 171 in a horizontal plane, or rotate the bonding stage 171 in a horizontal plane.

Accordingly, the relative bonding position of the optical display component P held on the bonding stage 171 and the sheet piece F1X held on the bonding head 120 is adjusted.

As shown in FIG. 6B, when the relative bonding position of the optical display component P and the sheet piece F1X is adjusted, the bonding head 120 is attached to the optical display component P by the head lifting device 140. It descends to the height of contact. The bonding head 120 is inclined so that an end portion on the upstream side in the transmission direction is located below an end portion on the downstream side in the transmission direction. By lowering the bonding head 120, the end of the bonding head 120 located upstream in the rolling direction than the sheet piece F1X is of the stacking plate 173 located upstream in the rolling direction of the optical display component P. Pressed on the upper surface.

Subsequently, as shown in FIG. 6C, by synchronously driving the rotation driving unit 136 and the head moving device 160, the bonding head 120 is moved from the top surface of the stacking plate 173 to the top surface of the optical display component P. Motorized toward With the rolling of the bonding head 120, the sheet piece F1X held on the holding surface 122a is gradually adhered to the upper surface of the optical display component P.

The bonding head 120 has, for example, weaker adhesive force than the bonding surface of the sheet piece F1X (see FIG. 7: adhesive layer F2a), and repeatedly adheres the surface protective film F4a of the sheet piece F1X. , Can be peeled off. Therefore, the sheet piece F1X pressed by the adhesive layer F2a side by the optical display component P is peeled from the holding surface 122a, and is bonded to the upper surface of the optical display component P. By the above, the bonding process of the sheet piece F1X to the optical display component P is completed.

In Figs. 6A to 6C, a process of transferring a sheet piece F1X of good quality without defects in the sheet surface from the bonding head 120 to the optical display component P is shown, but a sheet of defective products having defects in the sheet surface The same treatment is also performed in the case of bonding the piece F1X to the waste sheet or the like formed at the bevel position.

As described above, in the bonding device 100 of the present embodiment, after removing dust from the sheet piece F1X with the dust collector 10, the sheet piece F1X and the optical display component P in the head unit 150 are ) Can be joined, so that the joining can be performed in a state that eliminates the entrainment of dust and generation of air bubbles. Therefore, product quality can be improved.

Further, since the first roll pair 11 is a contact-type configuration, dust on the surface of the sheet piece F1X can be effectively removed as compared with a non-contact configuration.

Further, while pressing the curved holding surface 122a of the bonding head 120 against the sheet piece F1X stopped on the sheet stage 114, the bonding head 120 is rolled along the curve of the holding surface 122a. By doing so, the sheet piece F1X is peeled from the separator sheet F3a and held on the holding surface 122a. Therefore, occurrence of wrinkles in the sheet piece F1X held by the bonding head 120 is suppressed due to influences such as meandering of the optical member sheet FX. Therefore, when the sheet piece F1X is bonded to the optical display component P, generation of air bubbles between the sheet piece F1X and the optical display component P is suppressed.

In addition, in this embodiment, although it was demonstrated with the example which each surface of the 1st roll 11a, 11b has the 1st adhesive force (As1) which can remove the dust of the sheet piece F1X, it is not limited to this. Does not.

For example, of the pair of first rolls 11a and 11b, only the surface of the first upper roll 11a may have the first adhesive force As1, and only the surface of the first lower roll 11b is You may have a 1st adhesive force (As1). That is, it is sufficient that at least one surface of the pair of first rolls 11a and 11b has the first adhesive force As1. However, from the viewpoint of removing dust from each of the surface of the surface protection film F4a and the surface (lower surface) of the separator sheet F3a, the surface of each of the first rolls 11a and 11b is the first adhesive force (As1) It is preferable to have.

In addition, in this embodiment, although the surface of each of the 2nd rolls 12a, 12b demonstrated with the example which has the 2nd adhesive force Fs2 which is greater than the 1st adhesive force Fs1, it is not limited to this.

When only one surface of the pair of first rolls 11a and 11b has the first adhesive force Fs1, among the pair of second rolls 12a and 12b, the first adhesive force Fs1 is Only the surface of the second roll facing the first roll may have the second adhesive force Fs2.

In addition, in this embodiment, although the structure including the 1st roll pair 11 and the 2nd roll pair 12 was mentioned as an example and demonstrated, the dust collecting apparatus 10 is not limited to this. For example, the dust collecting device may not include the second roll pair 12 and may include only the first roll pair 11. According to this configuration, dust on the surface of the sheet piece F1X can be suppressed while simplifying the device configuration. Moreover, it becomes easy to attach and detach the 1st adhesive sheet 13 wound around the 1st roll pair 11.

8 is a schematic diagram of a production system 1000 for an optical display device according to a first embodiment of the present invention. The optical display device is configured by bonding an optical member to the optical display component P. The production system 1000 is equipped with the bonding apparatus 100 mentioned above as a bonding apparatus which bonds the sheet piece which is the said optical member to the optical display component P.

The production system 1000 of the present embodiment includes a cleaning device 1001, a first bonding device 1002, a second bonding device 1003, a peeling device 1004, a third bonding device 1005, and an inspection device 1006. ). The first bonding device 1002, the second bonding device 1003, and the third bonding device 1005 have the configuration of the bonding device 100 described above. The cleaning device 1001, the first bonding device 1002, the second bonding device 1003, the peeling device 1004, the third bonding device 1005, and the inspection device 1006 include optical display parts P. It is arranged in a series of conveying lines to convey.

The cleaning device 1001 cleans the optical display component P carried in from a loader (not shown), and removes foreign matters and the like adhered to the optical display component P. The cleaning device 1001 includes, for example, a first surface of the optical display component P (eg, a side that visually recognizes an image displayed in the display area) and a second surface (eg, a side that visually recognizes an image displayed in the display area). The side opposite to the side) can be combed and washed with water, and thereafter, the liquid on the first side and the second side of the optical display component P can be removed. The cleaning device 1001 can also be a dry type that removes static electricity from the front and back surfaces of the optical display component P and collects dust. The optical display component P is, for example, a liquid crystal panel.

The 1st bonding device 1002 bonds a 1st sheet piece to the 1st surface of the optical display component P. The first bonding device 1002 includes a dust collecting device that removes dust from the first sheet piece after formation of the first sheet piece and before bonding with the optical display component P, similar to the bonding device 100 described above. . For this reason, since the first sheet piece and the optical display component P can be bonded after removing the dust from the first sheet piece by the dust collecting device, the bonding can be performed in a state in which the meshing of dust and generation of air bubbles are eliminated. Therefore, product quality can be improved.

In addition, the 1st bonding apparatus 1002 peels the 1st sheet piece from the separator sheet by rolling the bonding head along the curvature of the holding surface while pressing the curved holding surface of the bonding head against the stopped 1st sheet piece. It is to keep it on the holding surface. Therefore, when bonding the first sheet piece to the optical display component P, generation of air bubbles between the first sheet piece and the optical display component P is suppressed.

The first sheet piece is, for example, a sheet-fed polarizing plate cut to a size corresponding to the external size of the optical display component P. The above-described "size corresponding to the external size of the optical display component P" means a size that does not generate an excess part that becomes a problem in practical use when bonded to the optical display component P. The first sheet piece has the same configuration as the sheet piece F1X shown in FIG. 7.

For example, an electrical component provided with a display area for displaying an image in the central portion of the optical display component P, and a plurality of terminals to which a semiconductor chip or flexible printed wiring is connected at the end of the optical display component P Attachment is provided. In this case, as the first sheet piece, for example, the optical display component is an area that is not less than the size of the display area of the optical display component P and less than the size of the external shape (contour shape when viewed from the plane) of the optical display component P. A sheet piece having a size of a region in which functional portions such as an electric component attachment portion in (P) are avoided is used. The "sheet piece larger than the optical member" of the present application refers to an optical display sheet having an arbitrary size between the display area of the optical display component P and the end of the optical display component P.

The 2nd bonding apparatus 1003 bonds a 2nd sheet piece to the 2nd surface of the optical display component P. The second bonding device 1003 includes a dust collecting device that removes dust from the second sheet piece after formation of the second sheet piece and before bonding with the optical display component P, similar to the bonding device 100 described above. . For this reason, since the second sheet piece and the optical display component P can be bonded after removing the dust from the second sheet piece by the dust collecting device, the bonding can be performed in a state in which the entrainment of dust and generation of air bubbles are eliminated. Therefore, product quality can be improved.

Further, the second bonding device 1003 moves the bonding head along the curvature of the holding surface while pressing the curved holding surface of the bonding head against the stopped second sheet piece, thereby transferring the second sheet piece from the separator sheet. It peels and keeps on the holding surface. Therefore, when bonding the second sheet piece to the optical display component P, generation of bubbles between the second sheet piece and the optical display component P is suppressed.

The second sheet piece is, for example, a sheet-fed polarizing plate cut to a size corresponding to the external size of the optical display component P. The second sheet piece has the same configuration as the sheet piece F1X shown in FIG. 7. The transmission axis of the second sheet piece bonded to the second surface of the optical display component P and the transmission axis of the first sheet piece bonded to the first surface of the optical display component P are orthogonal to each other.

On the conveyance line of the optical display component P between the 1st bonding device 1002 and the 2nd bonding device 1003, for example, an inversion device (not shown) for inverting the front and back of the optical display component P is provided. . The optical display component P having the first sheet piece bonded to the first surface is supplied to the second bonding device 1002 in a state in which the front and back sides are inverted.

The peeling device 1004 peels the surface protective film from the 2nd sheet piece bonded to the 2nd surface of the optical display component P.

The 3rd bonding device 1005 bonds the 3rd sheet piece to the surface of the 2nd sheet piece from which the surface protection film was peeled by the peeling device 1004. The third bonding device 1005 includes a dust collecting device that removes dust from the third sheet piece after formation of the third sheet piece and before bonding with the optical display component P, similar to the bonding device 100 described above. . For this reason, since the third sheet piece and the optical display component P can be bonded after removing the dust from the third sheet piece by the dust collecting device, the bonding can be performed in a state in which the meshing of dust and generation of air bubbles are eliminated. Therefore, product quality can be improved.

In addition, the third bonding device 1005 moves the bonding head along the curvature of the holding surface while pressing the curved holding surface of the bonding head against the stopped third sheet piece, thereby transferring the third sheet piece from the separator sheet. It peels and keeps on the holding surface. Therefore, when bonding the third sheet piece to the optical display component P, generation of air bubbles between the third sheet piece and the optical display component P is suppressed.

The third sheet piece is, for example, a single-leaf type luminance enhancing film cut to a size corresponding to the external size of the optical display component P. The luminance improving film is a reflective polarizing plate that reflects linearly polarized light orthogonal to the transmission axis. The 3rd sheet piece has the same structure as the sheet piece F1X shown in FIG. The transmission axis of the second sheet piece bonded to the second surface of the optical display component P and the transmission axis of the third sheet piece bonded on the second sheet piece are parallel to each other.

The inspection apparatus 1006 inspects the optical display component P, whether or not the positions of the first sheet piece, the second sheet piece, and the third sheet piece are appropriate (whether the position shift is within a tolerance range), or the like. The optical display component determined that the position of the first sheet piece, the second sheet piece, or the third sheet piece with respect to the optical display component P is not appropriate is discharged out of the system by a dispensing means (not shown).

The optical display component to which the first sheet piece, the second sheet piece, and the third sheet piece are bonded is subjected to incidental treatments such as defect inspection (foreign substance inspection, etc.) or mounting of electrical parts as necessary, and then the optical display device Shipped as (DP).

In the production system 1000 described above, as the first bonding device 1002, the second bonding device 1003, and the third bonding device 1005, a bonding device having the same configuration as the bonding device 100 described above is used. Has become. Therefore, it is possible to bond the sheet pieces in a state in which the entrainment of dust and generation of air bubbles are eliminated, and the optical display device DP with improved product quality can be provided.

[First modified example of the first embodiment]

Hereinafter, a dust collecting device 20 according to a first modified example of the first embodiment will be described with reference to FIGS. 9 and 10.

9 is a side cross-sectional view of a dust collecting device 20 according to a first modification of the first embodiment. 10 is an enlarged view of a main part of FIG. 9.

In this modification, the difference from the first embodiment is that the dust collecting device is a non-contact type structure, and that the cutting unit is a laser cutting device. In the following description, the non-contact type dust collecting device 20 will be mainly described. In addition, components common to those of the first embodiment are denoted by the same reference numerals, and detailed descriptions are omitted.

As shown in FIGS. 9 and 10, the laser cutting device 215 cuts the optical member sheet FX by irradiating the optical member sheet FX with laser light L from the upper side in the orthogonal direction thereof.

The dust collecting device 20 includes a suction device 30. The suction device 30 includes a dust collecting box 31 disposed on the sheet conveyance downstream side of the cutting line SX (corresponding to the cutting line CL described above) of the optical member sheet FX. A duct connection pipe CN is provided on the downstream side of the sheet conveyance of the dust collecting box 31.

The dust collecting box 31 has a hollow rectangular parallelepiped shape, and the front wall 33 located at the cutting line SX side (hereinafter, referred to as the front side of the dust collecting box 31) when viewed from the top is the cutting line SX. It is placed by following. The dust collecting box 31 makes the lower part of the front wall 33 obliquely inclined forward and downward, and forms a triangular extension 35 as viewed in cross section at the front edge of the lower wall 34. A suction nozzle (36) having a flow path (36a) inclined so as to be raised at the front lower edge of the dust collecting box (31) by the lower portion of the front wall (33) and the extension portion (35) of the lower wall (34). ) Is formed.

The suction nozzle 36 opens the suction port 37 over the entire width of the dust collecting box 31 in the longitudinal direction of the cutting line SX (the scanning direction of the laser light L). The suction port 37 is disposed close to the cutting line SX on the downstream side of the sheet conveyance. The front wall 33 is fixed to the upper side wall 38 so as to be able to adjust its vertical position, and the upper and lower widths of the suction port 37 can be adjusted by the vertical movement of the front wall 33. The inclination angle as seen from the cross-section of the flow path 36a (the inclination angle of the inclined surface of the extension 35 that is the lower surface of the flow path 36a in FIG. 10) θ1 is about 45° with respect to the upper surface of the optical member sheet FX. . The opening angle to the downstream side when viewed from the cross section of the flow path 36a (open angle of the upper and lower surfaces of the flow path 36a) θ2 is set to about 15°.

The dust collecting box 31 is arranged at a distance d such that it does not interfere with the laser beam L on the downstream side of the sheet conveyance than the cutting line SX in plan view. In this modified example, the suction device 30 is immobile at the time of laser cutting, and the distance d is smaller than the case where the suction device 30 moves at the time of laser cutting, which contributes to the miniaturization of the suction device 30.

In the lower wall 34 of the dust collecting box 31, a flow path 41 for support air is formed therein. The flow path 41 feeds, for example, the support air introduced from the inlet 42 that is opened at the lower end of the rear wall 39 or the like to the outlet 43 that is open on the lower surface of the extension portion 35. A thin plate-shaped guide plate 44 is fixed to the lower surface of the front portion of the lower wall 34, and between the guide plate 44 and the lower wall 34, a jet nozzle that opens in front of the lower wall 34 ( 51) is formed. The ejection nozzle 51 forms an ejection port 52 extending over the entire width of the dust collection box 31, just like the suction port 37, under the suction port 37 of the dust collection box 31. .

The suction device 30, for example, before the suction operation is performed at the cutting position by the laser cutting device 215, the dust collecting box 31 is raised and retracted from the cutting position, and when the suction operation is performed at the cutting position, the dust collecting box Lower (31). The dust collecting box 31 is brought into contact with the uppermost surface of the optical member sheet FX that cuts the lower surface of the guide plate 44 at the time of lowering, and the suction port 37 is located on the downstream side of the sheet conveyance of the cutting line SX and in the vicinity thereof. ) And the outlet 52 are arranged. Accordingly, when the optical member sheet FX is laser cut, the decomposition product (fume) in the form of smoke generated by the melting or decomposition reaction can be collected by the dust collecting box 31.

In the dust collecting box 31, the wind pressure at the tip of the suction nozzle 36 is set at a static pressure of 0.1 kPa or more, and a wind speed of 7 m/s or more. On the other hand, the wind pressure and wind speed at the tip of the ejection nozzle 51 are set smaller than that of the suction nozzle 36. Accordingly, the support air ejected by the ejection nozzle 51 flows out of the ejection port 52 and immediately bends toward the suction port 37 above it, and is sucked into the suction nozzle 36. By this flow of air, the adhesion of fume to the upper surface of the optical member sheet FX is effectively suppressed in the range of the distance d between the suction port 37 and the cutting line SX. The support air ejected by the ejection nozzle 51 is warm air, and by applying thermal energy to the sublimated fume, adhesion of the fume to the optical member sheet FX is further suppressed.

As described above, also in this modified example, after removing dust from the sheet piece F1X with the dust collector 20, the sheet piece F1X and the optical display component P can be bonded in the head unit 150. Therefore, bonding can be carried out in a state in which the entrainment of dust and generation of air bubbles are eliminated. Therefore, product quality can be improved.

Further, according to the present modification, fumes generated by laser processing with the dust collecting device 20 can be sucked out over the entire length of the cutting line SX. Accordingly, adhesion of fumes to the product surface can be suppressed, while line contamination by fumes attached to the product can be prevented.

[Second Embodiment]

Hereinafter, a bonding device and a production system of an optical display device according to a second embodiment of the present invention will be described with reference to FIGS. 11 to 13.

Fig. 11 is a diagram showing a cutting process of the sheet piece FXm in the production system of the present embodiment.

In this embodiment, the difference from the first embodiment is that the sheet piece FXm bonded to the optical display component P by the bonding head is a sheet piece slightly larger than the optical member FO of the target size. The point is that after bonding the sheet piece FXm to the optical display component P, the excess portion of the sheet piece FXm is cut by the cutting device 184. Therefore, in the following description, it demonstrates centering on the cutting process of the sheet piece FXm. In addition, components common to those of the first embodiment are denoted by the same reference numerals, and detailed descriptions are omitted.

The cross-sectional structure of the sheet piece FXm is the same as that of the sheet piece F1X shown in FIG. 7. The sheet piece FXm is obtained by cutting the long optical member sheet FX shown in FIG. 1 into a predetermined size. The sheet piece FXm is slightly larger than the size corresponding to the external size of the optical display component P (the size of the first region FB), for example. The above-described "size corresponding to the external size of the optical display component P" means a size that does not generate an excess part that becomes a problem in practical use when bonded to the optical display component P. Since the sheet piece FXm is larger than the size corresponding to the external size of the optical display component P, the excess part (the second area FS) which becomes a problem in practical use is cut with the cutting device 184.

The bonding device that bonds the sheet piece FXm to the optical display component P is the same as the bonding device 100 described in the first embodiment. In this embodiment, the detection device 189 and the cutting device 184 are provided on the conveyance line on the downstream side of this bonding device.

The detection device 189 includes an imaging device 183 that captures an image of the optical display component P to which the sheet piece FXm is bonded. The detection device 189 detects a cut line WCL (a position at which the sheet piece FXm should be cut) of the sheet piece FXm based on the imaging data of the imaging device 183.

The imaging device 183, for example, captures an image of the optical display component P over the sheet piece FXm from above the optical display component P placed on the cutting stage 185. The imaging device 183 captures, for example, images of four corners of a substrate (eg, a color filter substrate) of the optical display component P to which the sheet piece FXm is bonded. The detection device 189, for example, image-processes this imaged data to detect the position of the outer periphery of the substrate, and detects the position of the outer periphery as the cut line WCL of the sheet piece FXm.

Information of the cut line WCL detected by the detection device 189 is sent to the control device 190. The control device 190 controls the cutting device 184 based on the information of the cut line WCL sent from the detection device 189, and cuts the sheet piece FXm along the cut line WCL. Accordingly, the first area FB facing the display area of the sheet piece FXm and the second area FS outside the first area FB are separated, so that the optical member FO of the target size is It is cut out from the sheet piece FXm.

The cut line WCL of the sheet piece FXm is detected for each optical display component P conveyed on the conveyance line. Accordingly, even if there is a variation in size for each optical display component P, the optical member FO having a size corresponding to the external size of the optical display component P can be reliably cut out from the sheet piece FXm.

In the present specification, after bonding the sheet piece FXm larger than the optical member FO of the target size to the optical display component P, based on the imaging data of the optical display component P, the sheet piece FXm The method of cutting the excess part of) is called the “window cut method”. In this embodiment, the optical member FO of a desired size is bonded to a desired position of the optical display component P by employing a window cutting method. By adopting the window cut method, the following effects can be obtained.

(i) In the case of bonding the optical member to the optical display component P, the dimensional deviation of the optical display component P and the optical member FO, and the optical member FO with respect to the optical display component P In consideration of bonding variation (position shift) and the like, an optical member FO that is slightly larger than the originally required size is bonded to the optical display component P. However, in this method, an extra area (frame area) that does not contribute to the display is formed in the periphery of the display area of the optical display component P, and miniaturization of the device is hindered. In the case of adopting the window cutting method, the optical display component P after bonding the sheet piece FXm is imaged, and the sheet piece FXm is cut based on the imaged data. The optical member FO of the size of the above can be reliably disposed.

(ii) The direction of the optical axis of the sheet piece FXm may be changed from the originally designed direction due to manufacturing errors. In this case, the direction of the optical axis of the sheet piece FXm (optical member sheet FX) is measured in advance, and the relative bonding position between the sheet piece FXm and the optical display component P is adjusted based on the measurement result. Although it is preferable to do this, if the size of the sheet piece FXm matches the size of the target optical member FO, such adjustment cannot be performed. In the window cutting method, since the sheet piece FXm larger than the optical member FO is bonded to the optical display component P, and then the excess portion of the sheet piece FXm is cut, such adjustment is possible.

For example, the bonding position (relative bonding position) of the sheet piece FXm to the optical display component P can be determined as follows.

First, as shown in Fig. 12A, a plurality of inspection points CP are set in the width direction of the optical member sheet FX, and the direction of the optical axis of the optical member sheet FX at each inspection point CP To detect. The timing for detecting the optical axis may be when manufacturing the master roll RX (refer to Fig. 1), or may be between until the optical member sheet FX is unwound from the master roll RX and cut in half. The data in the optical axis direction of the optical member sheet FX is stored in a storage device not shown in association with the position of the optical member sheet FX in the longitudinal direction and the width direction.

The control device 190 acquires data of the optical axis of each inspection point CP (inspection data of the in-plane distribution of the optical axis) from the storage device, and the optical member sheet FX of the portion where the sheet piece FXm is cut out. ) (The area divided by the cutting line CL), the average direction of the optical axis is detected.

For example, as shown in FIG. 12B, the angle (declination) formed by the direction of the optical axis and the edge line EL of the sheet piece FXm is detected for each inspection point CP, and the largest angle (maximum declination angle) among the declinations is detected. ) Is θmax, and the smallest angle (minimum declination angle) is θmin, the average value θmid (=(θmax+θmin)/2) of the maximum declination angle θmax and the minimum declination angle θmin is detected as the average declination angle. Then, the direction forming the average declination angle θmid with respect to the edge line EL of the sheet piece FXm is detected as the direction of the average optical axis of the sheet piece FXm. Here, the declination angle is calculated, for example, by making the direction of left rotation with respect to the edge line EL of the sheet piece FXm positive and the direction of right rotation as negative.

Then, the optical display component P so that the average direction of the optical axis of the optical member sheet FX detected by the above-described method achieves a desired angle with respect to one side of the display area P4 of the optical display component P. The bonding position (relative bonding position) of the sheet piece FXm relative to each other is determined. For example, when the direction of the optical axis of the optical member is set to 90° to one side of the display area P4 according to the design specifications, the average direction of the optical axis of the optical member sheet FX is the display area. The sheet piece FXm is bonded to the optical display part P so that it may make 90 degrees with respect to one side of (P4).

After that, the cutting line WCL of the sheet piece FXm is detected by the detection device 189 shown in (a) in FIG. 11, and the cutting device 184 shown in (b) in FIG. Thereby, the sheet piece FXm is cut along the cut line WCL. Accordingly, the optical member FO, in which the direction of the optical axis is precisely controlled, is disposed at a desired size and a desired position. Accordingly, it is possible to provide a narrow frame optical display device DP having excellent display quality.

13 is a schematic diagram of a production system 2000 of an optical display device according to a second embodiment of the present invention. The production system 2000 is a production system employing a window cut method. The production system 2000 includes the bonding device 100 described in the first embodiment as a bonding device for bonding a sheet piece larger than the optical member to the optical display component P.

The production system 2000 of this embodiment includes a cleaning device 2001, a first bonding device 2002, a first cutting device 2003, a second bonding device 2004, a second cutting device 2005, and a peeling device. (2006), a third bonding device (2007), a third cutting device (2008) and an inspection device (2009). The cleaning apparatus 2001, the first bonding apparatus 2002, the first cutting apparatus 2003, the second bonding apparatus 2004, the second cutting apparatus 2005, the peeling apparatus 2006, and the third bonding apparatus 2007 ), the third cutting device 2008 and the inspection device 2009 are arranged on a series of conveying lines that convey the optical display component P.

The cleaning device 2001, the first bonding device 2002, the second bonding device 2004, the peeling device 2006, the third bonding device 2007, and the inspection device 2009 are the cleaning devices of the first embodiment. (1001), the 1st bonding apparatus 1002, the 2nd bonding apparatus 1003, the peeling apparatus 1004, the 3rd bonding apparatus 1005, and the inspection apparatus 1006 each have the same structure. However, in the 1st bonding apparatus 2002, the 2nd bonding apparatus 2004, and the 3rd bonding apparatus 2007, the sheet piece slightly larger than the optical member of a target size is bonded to the optical display component P.

The first cutting device 2003, the second cutting device 2005 and the third cutting device 2008 have the same configuration as the cutting device 184 and detection device 189 described above. That is, in the 1st cutting device 2003, the 2nd cutting device 2005, and the 3rd cutting device 2008, the optical display component P which bonded the sheet piece FXm larger than the optical member of a target size was bonded. A window cutting method is employed in which an image is captured by an imaging device and the excess portion of the sheet piece is cut based on the imaged data. Accordingly, it is possible to provide a narrow frame optical display device DP having excellent display quality.

As mentioned above, examples of preferred embodiments according to the present invention have been described with reference to the accompanying drawings, but it goes without saying that the present invention is not limited to these examples. The overall shape, combination, and the like of each constituent member shown in the above-described examples are examples, and various changes can be made based on design requirements and the like without departing from the scope of the present invention.

According to the bonding device, bonding method, production system of an optical display device, and production method of an optical display device according to the present invention, a bonding device capable of increasing product quality by suppressing dust from entering when transferring a sheet piece, bonding method , An optical display device production system, and an optical display device production method can be provided.

10, 20: dust collecting device 11: first roll pair
11a: first upper roll (first roll) 11b: first lower roll (first roll)
12: second roll pair 12a: second upper roll (second roll)
12b: 2nd lower roll (2nd roll) 13: 1st adhesive sheet
14: second adhesive sheet 100: bonding device
111: winding unit 112: winding unit
114: seat stage 115: cut portion
120: bonding head 122a: holding surface
150: head unit (junction) 171: bonding stage
173: stacking plate 184: cutting device
189: detection device
1000: production system of an optical display device
1002, 1003, 1005: bonding device
2000: production system of optical display devices
2002, 2004, 2007: bonding device
2003, 2005, 2008: cutting device
DP: optical display device F1X, FXm: sheet piece
F3a: separator sheet FO: optical member
FX: Optical member sheet P: Optical display component
RX: Disc roll WCL: Cut line
Fs1: first adhesive force Fs2: second adhesive force

Claims (22)

As a bonding device for bonding a sheet piece to an optical display component,
An unwinding portion for unwinding the optical member sheet together with the separator sheet from the original roll,
A cut portion for forming the sheet piece by cutting the optical member sheet with the separator sheet remaining,
A bonding portion for peeling off the sheet piece from the separator sheet and bonding to the optical display component,
A dust collecting device disposed between the cut portion and the joint portion to remove dust from the sheet piece;
A sheet stage supporting the sheet piece on the separator sheet side,
Bonding stage on which the optical display component is placed
Including,
The bonding portion is rolled along the curvature of the holding surface while pressing the curved holding surface against the sheet piece stopped on the sheet stage, thereby peeling the sheet piece from the separator sheet and holding it on the holding surface. And a bonding head for bonding the sheet piece held on the holding surface to the optical display component placed on the bonding stage,
After the sheet piece is peeled off from the separator sheet by the bonding head, it includes a winding portion for winding the independent separator sheet,
The winding unit rotates in the direction of unwinding the separator sheet in a first period immediately after the bonding head presses the holding surface against the sheet piece to start rolling, and after the first period elapses, the rolling The bonding apparatus which rotates in the direction which winds up the said separator sheet in the 2nd period until the end of this. The pair of agents according to claim 1, wherein the dust collecting device inserts a part of the conveyance direction of the sheet piece conveyed to the bonding portion from above and below, and further contacts the surface of the sheet piece to remove dust from the sheet piece. A first pair of rolls constituted by one roll,
At least one surface of the pair of first rolls has a first adhesive force capable of removing dust from the sheet piece. The bonding device according to claim 2, wherein the first adhesive force is smaller than the adhesive force between the sheet piece and the separator sheet. The bonding device according to claim 2 or 3, wherein a first adhesive sheet is wound around the first roll having the first adhesive force so as to be detachably wound. The pair of dust collecting devices according to claim 2 or 3, wherein the dust collecting device is configured to remove dust from the first roll by inserting the first roll pair from above and below and by bringing a surface into contact with the first roll pair. A second roll pair constituted by two rolls,
A bonding apparatus wherein a surface of the second roll facing the first roll having the first adhesive force among the pair of second rolls has a second adhesive force greater than the first adhesive force. The bonding device according to claim 5, wherein a second pressure-sensitive adhesive sheet is wound around the second roll having the second adhesive force so as to be detachably attached. The stacking plate according to claim 1 or 2, wherein on the bonding stage, a stacking plate is provided adjacent to the optical display component,
The bonding head, after the holding surface is pressed against the upper surface of the stacking plate, by continuously rolling the upper surface of the stacking plate and the upper surface of the optical display component, the sheet piece held on the holding surface is displayed in the optical display. A bonding device that bonds to a part. A production system for an optical display device formed by bonding an optical member to an optical display component,
A bonding device for bonding the sheet piece as the optical member to the optical display component,
The manufacturing system of an optical display device, wherein the bonding device is the bonding device according to any one of claims 1 to 3. A production system for an optical display device formed by bonding an optical member to an optical display component,
A bonding device for bonding a sheet piece larger than the optical member to the optical display component,
A detection device that photographs the optical display component to which the sheet piece is bonded, and detects a cut line of the sheet piece based on the imaged data;
A cutting device for cutting the optical member from the sheet piece by cutting the sheet piece bonded to the optical display component along the cut line
Including,
The manufacturing system of an optical display device, wherein the bonding device is the bonding device according to any one of claims 1 to 3. As a bonding method for bonding a sheet piece to an optical display component,
A unwinding step of unwinding the optical member sheet together with the separator sheet from the original roll,
A cutting step of cutting the optical member sheet with the separator sheet remaining to form the sheet piece,
A bonding step of peeling off the sheet piece from the separator sheet and bonding it to the optical display component,
A dust collecting step of removing dust from the sheet piece between the cutting step and the bonding step,
A supporting step of supporting the sheet piece on the separator sheet side by a sheet stage,
Placement step of placing the optical display component on a bonding stage
Including,
In the bonding step, the sheet piece is peeled from the separator sheet by rolling the bonding head along the curvature of the holding surface while pressing the curved holding surface of the bonding head against the sheet piece stopped on the sheet stage. Bonding the sheet piece held on the holding surface and held on the holding surface to the optical display component placed on the bonding stage,
After the sheet piece is peeled off from the separator sheet by the bonding head, a winding step of winding up the single separator sheet by a winding unit,
In the winding step, the first period immediately after the bonding head presses the holding surface against the sheet piece to start rolling, rotates the take-up portion in a direction in which the separator sheet is unwound, and the first period elapses. After that, in a second period until the end of the transmission, the winding portion is rotated in a direction in which the separator sheet is wound. The method of claim 10, wherein the dust collecting step includes a pair of inserting a part of the conveying direction of the sheet piece conveyed in the bonding step from above and below, and further removing dust from the sheet piece by contacting the surface with the surface of the sheet piece. Using a pair of first rolls constituted by a first roll,
At least one surface of the pair of first rolls has a first adhesive force capable of removing dust from the sheet piece. The bonding method according to claim 11, wherein the first adhesive force is smaller than the adhesive force between the sheet piece and the separator sheet. The bonding method according to claim 11 or 12, wherein a first adhesive sheet is removably wound around the first roll having the first adhesive force. The method of claim 11 or 12, wherein in the dust collecting step, the first roll pair is inserted from above and below, and the surface is brought into contact with the first roll pair to remove dust from the first roll. Using a second pair of rolls composed of 2 rolls,
A bonding method wherein a surface of the second roll facing the first roll having the first adhesive force among the pair of second rolls has a second adhesive force greater than the first adhesive force. The bonding method according to claim 14, wherein a second adhesive sheet is detachably wound around the second roll having the second adhesive force. The method according to claim 10 or 11, wherein on the bonding stage, a stacking plate is provided adjacent to the optical display component,
In the bonding step, after the holding surface of the bonding head is pressed against the upper surface of the stacking plate, the bonding head continuously rolls the upper surface of the stacking plate and the upper surface of the optical display component to be held on the holding surface. A bonding method wherein one of the sheet pieces is bonded to the optical display component. As a production method of an optical display device obtained by bonding an optical member to an optical display component,
A bonding step of bonding the sheet piece as the optical member to the optical display component,
The manufacturing method of an optical display device, wherein the bonding step is performed using the bonding method according to any one of claims 10 to 12. As a production method of an optical display device obtained by bonding an optical member to an optical display component,
A bonding step of bonding a sheet piece larger than the optical member to the optical display component,
A detection step of photographing the optical display component to which the sheet piece is bonded, and detecting a cut line of the sheet piece based on the imaged data;
A cutting step of cutting the optical member from the sheet piece by cutting the sheet piece bonded to the optical display component along the cut line
Including,
The manufacturing method of an optical display device, wherein the bonding step is performed using the bonding method according to any one of claims 10 to 12. delete delete delete delete

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