KR20170026455A - Bonding device, bonding method, production system for optical display device, and production method for optical display device - Google Patents

Abstract

The joining apparatus 100 of the present invention is capable of suppressing the curvature of the holding surface 122a while pressing the curved holding surface 122a of the joining head 120 against the sheet piece F1X supported on the seat stage 114 Therefore, by moving the bonding head 120, the sheet piece F1X is peeled from the separator sheet F3a and held on the holding surface 122a. The joining apparatus 100 is configured such that the sheet piece F1X held on the holding surface 122a is pressed against the optical display component P placed on the bonding stage 171 while the curved surface of the holding surface 122a, The sheet member F1X held on the holding surface 122a is joined to the optical display component P by rolling the support member 120. [

Description

FIELD OF THE INVENTION [0001] The present invention relates to a bonding apparatus, a bonding method, a production system of an optical display device, and a production method of the optical display device. BACKGROUND OF THE INVENTION [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining apparatus, a joining method, a production system of an optical display apparatus, and a production method of the optical display apparatus.

This application claims priority based on Japanese Patent Application No. 2014-132811 filed on June 27, 2014, the contents of which are incorporated herein by reference.

An apparatus disclosed in Patent Document 1 is known as an apparatus for bonding a sheet material to an object to be attached (object to be attached).

In the apparatus of Patent Document 1, a long sheet material is cut into a predetermined size and held on the head. Then, the head is moved to the stage on which the patch is placed to position the head and the patch, and then the head is pressed onto the patch to transfer the sheet to the patch.

Patent Document 1: Japanese Patent No. 4482757

In the apparatus of Patent Document 1, the head is formed in an arc shape so that bubbles are not generated when the sheet material is transferred onto the object to be attached. However, since the sheet material is held on the head by rotating the head while conveying the sheet, wrinkles are likely to occur in the sheet material when the sheet material is held on the head due to the influence of skewing or the like when the sheet material is conveyed. Therefore, when transferring the sheet material to the object to be attached, air bubbles are likely to be generated between the sheet material and the object to be attached.

It is an object of the present invention to provide a joining apparatus, a joining method, a production system of an optical display apparatus, and a production method of an optical display apparatus which can suppress the generation of bubbles when transferring sheet pieces.

A joining apparatus according to an aspect of the present invention is a joining apparatus for joining a sheet piece to an optical display component, the joining apparatus comprising: a take-up unit for taking out an optical member sheet from a disc roll together with a separator sheet; A sheet stage for supporting the sheet piece on the side of the separator sheet; a bonding stage on which the optical display part is placed; and a sheet stage for holding the sheet piece, The sheet piece is peeled from the separator sheet and held on the holding surface while pressing the curved holding surface while rolling the sheet piece along the curvature of the holding surface so as to hold the sheet piece held on the holding surface And a bonding head which is bonded to the optical display part placed on the bonding stage.

The joining apparatus according to an embodiment of the present invention includes a winding portion for winding up the separator sheet alone after the sheet piece is peeled from the separator sheet by the joining head, Wherein the separator sheet is rotated in a direction in which the separator sheet is unfolded after the holding surface is pressed against the sheet piece and the first period immediately after the start of the electric power is started, The separator sheet may be rotated in a direction in which the separator sheet is wound.

In the bonding apparatus according to an embodiment of the present invention, a laminated plate is provided adjacent to the optical display component on the bonding stage, and the bonding head is pressed against the upper surface of the folded- The upper surface of the dam plate and the upper surface of the optical display component are continuously rotated, so that the sheet piece held on the holding surface can be bonded to the optical display component.

A production system of an optical display device according to a first aspect of the present invention is a production system of an optical display device in which an optical member is bonded to an optical display component, And the bonding apparatus is the bonding apparatus according to one aspect of the present invention described above.

A production system of an optical display device according to a second aspect of the present invention is a production system of an optical display device in which an optical member is bonded to an optical display component, A detecting device for picking up the optical display part to which the sheet piece is bonded and detecting a cut line of the sheet piece based on the picked-up image; and a controller for controlling the sheet piece bonded to the optical display part along the cut line And a cutting device for cutting the optical member from the sheet piece by cutting, wherein the joining apparatus is the joining apparatus according to one aspect of the present invention described above.

A joining method according to an aspect of the present invention is a joining method for joining a sheet piece to an optical display part, the joining method comprising: a winding step of winding an optical member sheet together with a separator sheet from a disk roll; A supporting step of supporting the sheet piece on the side of the separator sheet by a sheet stage; a placing step of placing the optical display part on a bonding stage; The sheet piece is peeled from the separator sheet and held on the holding surface by pressing the joining head against the curved holding surface of the joining head while rolling the joining head along the curvature of the holding surface In addition, the sheet piece held on the holding surface may be stuck to the joint stay Placed in and a bonding step for bonding the optical display components.

The method for joining according to one aspect of the present invention includes a winding step of winding the separator sheet separately by separating the separator sheet from the separator sheet by the joining head and winding the separator sheet by the winding section, In the first period immediately after the joining head presses the holding surface against the sheet piece and starts rolling, the winding portion is rotated in a direction to unwind the separator sheet, and after the first period has elapsed, And the second period until the end of the electric power can rotate the winding section in the winding direction of the separator sheet.

In the joining method according to an embodiment of the present invention, the joining stage is provided with a laminated plate adjacent to the optical display component, and in the joining step, the holding surface of the joining head is pressed onto the upper surface of the double- The joining head is continuously rotated on the upper surface of the folded-back plate and the upper surface of the optical display component, so that the sheet member held on the holding surface can be bonded to the optical display component.

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 in which an optical member is bonded to an optical display component and includes a bonding step of bonding the sheet member as the optical member to the optical display component And the joining step is performed using the joining method according to one aspect of the present invention described above.

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 in which an optical member is bonded to an optical display component, A step of picking up the optical display part to which the sheet piece is bonded and detecting a cut line of the sheet piece based on the picked-up image data; and a step of cutting the sheet piece bonded to the optical display part along the cut line And cutting the optical member from the sheet piece by cutting, wherein the joining step is performed using the joining method according to one aspect of the present invention described above.

Quot; optical member " in the production system and the production method of the optical display device according to the first aspect, and in the production system and production method of the optical display device according to the second aspect, Quot; optical member " The " size set based on the specification of the optical display device " refers to, for example, a size corresponding to the outer size of the optical display component, and more specifically, Does not mean size.

For example, a display area for displaying an image is provided at the center of the optical display part, and an end of the optical display part is provided with an electrical part attachment part provided with a plurality of terminals to which a semiconductor chip, a flexible print wiring, or the like is connected. In this case, the " optical member " is, for example, an area that is equal to or larger than the size of the display area of the optical display component and the size of the outer shape (outline shape when viewed from the plane) An optical member having a size of an area in which a functional part such as an attaching part is avoided is used.

Quot; a sheet piece larger than the optical member " in the production system and the production method of the optical display device according to the second aspect means a sheet member larger than the optical member of the desired size (size set based on specifications of the optical display device) Of course. The portion of the sheet portion larger than the optical member becomes an object of cutting as a surplus portion. By separating the excess portion from the sheet piece, an optical member having a desired size can be obtained.

According to the present invention, it is possible to provide a joining apparatus, a joining method, a production system of an optical display apparatus, and a production method of an optical display apparatus that can suppress the generation of bubbles when transferring sheet pieces.

1 is a schematic view of a bonding apparatus according to a first embodiment of the present invention.
2A is a view showing a step of adhering a sheet piece to a bonding head.
2B is a view showing a step of adhering a sheet piece to a bonding head.
2C is a view showing a step of adhering a sheet piece to a bonding head.
3A is a diagram showing a step of transferring a sheet piece adhered to a bonding head onto an optical display component.
3B is a view showing a step of transferring a sheet piece adhered to a bonding head onto an optical display component.
3C is a view showing a step of transferring a sheet piece adhered to a bonding head onto an optical display component.
4 is a sectional view of the optical member sheet.
5 is a schematic view of a production system of an optical display device according to the first embodiment of the present invention.
6 is a view showing a step of cutting a sheet piece in the bonding apparatus according to the second embodiment of the present invention.
Fig. 7A is a view for explaining a method of determining the joint position of the optical display part and the sheet piece. Fig.
Fig. 7B is a view for explaining a method of determining the joint position of the optical display part and the sheet piece.
8 is a schematic view of a production system of an optical display device according to a second embodiment of the present invention.

[First Embodiment]

A joining apparatus and a production system of an optical display device according to a first embodiment of the present invention will be described below with reference to Figs. 1 to 5. Fig.

1 is a schematic view of a bonding apparatus 100 of the present embodiment.

The joining apparatus 100 of the present embodiment joins a sheet piece F1X obtained by half-cutting a long optical member sheet FX on one surface of an optical display component P.

As the optical display part P, for example, a panel type optical display part 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 enhancement film, or the like can be used. In the present embodiment, for example, the polarizing film shown in Fig. 4 is used as the optical member sheet FX.

The optical member sheet FX of Fig. 4 has a film-like optical member main body F1a, an adhesive layer F2a provided on one surface (upper surface in Fig. 4) of the optical member main body F1a, A separator sheet F3a detachably laminated on one surface of the optical member main body F1a via the surface protective film F2a and a surface protective film F3b laminated on the other surface (F4a).

The optical member main body F1a functions as, for example, a polarizing plate and is bonded to the display region of the optical display component P or the display region and the peripheral region thereof. The optical member main body F1a is bonded to the optical display component P via the adhesive layer F2a while separating the separator sheet F3a while leaving the adhesive layer F2a on one side thereof. Hereinafter, the portion of the optical member sheet FX excluding the separator sheet F3a is referred to as a bonded sheet F5. The sheet flake F1X is a sheet piece of a bonded sheet F5 obtained by cutting a long elongated bonded sheet F5 to a predetermined size.

The separator sheet F3a protects the adhesive layer F2a and the optical member main body F1a until the separator sheet F3a is separated from the adhesive layer F2a. The surface protective film F4a is bonded to the optical display part P together with the optical member main body F1a. The surface protection film F4a is disposed on the opposite side of the optical member P with respect to the optical member main body F1a to protect the optical member main body F1a. The optical member sheet FX may not include the surface protective film F4a or the surface protective film F4a may be separated from the optical member main body F1a.

The optical member main body F1a includes a sheet polarizer F6 and 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 And a second film F8 bonded to the second film F8. The first film F7 and the second film F8 are, for example, protective films for protecting the polarizer F6.

The optical member main body F1a may have a single-layer structure including a single optical layer or a multi-layer structure in which a plurality of optical layers are laminated to each other. The optical layer may be a retardation film or a brightness enhancement film in addition to the polarizer F6. At least one of the first film (F7) and the second film (F8) is subjected to surface treatment capable of obtaining effects such as hard coat treatment for protecting the outermost surface of the liquid crystal display element and antiglare treatment including antiglare 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.

1, the joining apparatus 100 of the present embodiment includes a sheet conveying apparatus 110, a head unit 150, a head moving apparatus 160, a stage unit 170, and a control apparatus 190).

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

The winding unit 111 holds the disc roll RX around which the elongated optical member sheet FX is wound and guides the optical member sheet FX in its longitudinal direction. The optical member sheet FX has a width equal to the length of the first side (e.g., the short side) of the display area of the optical display component P in the horizontal direction (the sheet width direction) perpendicular to the carrying direction thereof .

Hereinafter, the direction in which the optical member sheet FX (separator sheet F3a) is pulled out from the take-up unit 111 and conveyed is referred to as a sheet conveying direction, the upstream side in the sheet conveying direction is referred to as a sheet conveying upstream side, Direction is referred to as the sheet conveyance downstream side.

The cut portion 115 cuts the optical member sheet FX cut from the disc roll RX in the thickness direction while leaving the separator sheet F3a. 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 in the longitudinal direction orthogonal to the sheet width direction, for example, A part of the optical member sheet FX in the thickness direction is cut over the entire width in the sheet width direction.

The cut portion 115 is set such that the separator sheet F3a is not broken (so that the predetermined thickness is left in the separator sheet F3a) due to the tension applied during the transportation of the optical member sheet FX, And half cut is performed to the vicinity of the interface between the adhesive layer F2a and the separator sheet F3a. At this time, a laser cutting device may be used as the cut portion 115 instead of the cutting blade.

The optical member sheet F1 after the half cut is cut into the optical member main body F1a, the adhesive layer F2a and the surface protective film F4a in the thickness direction thereof, A cut line extending across the width is formed. The optical member sheet F is divided into sections having a length corresponding to the length of the second side of the display region in the longitudinal direction by the cut-line. And these sections become one seat piece F1X in the joint sheet F5, respectively.

The cutting angle of the optical member sheet FX with respect to the sheet conveying direction is controlled by the control device 190. [ For example, an image pickup device for picking up an image of an edge of the optical member sheet FX is arranged at a plurality of positions in the sheet conveying direction, and based on the images of the edges of the plurality of portions picked up by these image pickup devices, The position of an edge of a plurality of portions is detected. Based on the relative positional relationship of the detected edges of the plurality of portions, the control device 190 calculates the tilt angle of the edge in the sheet transport direction of the optical member sheet FX at the cut position. Then, the cut portion 115 cuts the optical member sheet FX at a cutting angle controlled by the control device 190. Then, Accordingly, even when the optical member sheet FX skews in the sheet width direction, the optical member sheet FX can be cut accurately in a desired direction.

The sheet stage 114 supports the lower surface (the surface on the side of the separator sheet F3a shown in Fig. 4) of the optical member sheet FX wound from the disc roll RX. The sheet stage 114 is arranged so as to extend over both the cut position where the optical member sheet FX is half cut by the cut portion 115 and the peeling position where the sheet member F1X is peeled from the separator sheet F3a Respectively.

The nip roll section 113 includes a first nip roll 113a and a second nip roll 113b, which are disposed in parallel with each other in the direction of their rotational axes. The first nip roll 113a and the second nip roll 113b are rotated synchronously with each other to rotate the separator sheet F3a in the sheet conveyance downstream side in the sheet conveyance downstream direction (the direction in which the separator sheet F3a is wound on the take- (In the direction of unwinding from the take-up part 112).

The winding unit 112 winds the separator sheet F3a after separating the sheet piece F1X from the separator sheet F3a by the joint head 120. [ The winding portion 112 rotates in synchronization with the first and second nip rolls 113a and 113b to wind and unwind the separator sheet F3a.

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

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

The head body portion 121 has a flat upper surface and a curved surface curved along the advancing direction of the optical member sheet FX so that the lower surface is convex downward. An adhesive sheet 122 is fixed to the lower surface of the head main body 121. As the adhesive sheet 122, for example, a sticky silicone rubber or the like is used. The surface of the adhesive sheet 122 is a curved holding surface 122a for adhering and holding the sheet piece F1X. The holding surface 122a has a weaker adhesive force than, for example, the bonding surface (adhesive layer F2a) of the sheet flake F1X and repeatedly adheres and peels the surface protective film F4a of the sheet flake F1X .

The joining head 120 moves along the curvature of the holding surface 122a while pressing the curved holding surface 122a against the sheet piece F1X supported on the seat stage 114, Is peeled from the separator sheet F3a and held on the holding surface 122a. The joining head 120 rotates along the curvature 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 joining stage 171, The sheet piece F1X is bonded to the optical display part P.

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

The bonding head 120 is connected to the rotation support shaft 136a of the rotation drive unit 136 via a rod portion 137 connected to the center portion of the upper surface of the head body portion 121. [ The rotation support shaft 136a is fixed to the base plate 135. [ The bonding head 120 is suspended on the lower surface of the base plate 135 via the rod portion 137 and the rotation support shaft 136a in a freely rotatable manner. 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 by a rotation drive unit 136 in a predetermined angular range. As a result, the adhesion of the sheet piece F1X to the holding surface 122a from the separator sheet F3a and the bonding (transfer) of the sheet piece F1X to the optical display component P on the holding surface 122a .

The head lifting device 140 includes a lifting and lowering driving part 141 and a load part 142. The first end portion of the rod portion 142 is fixed to the upper surface of the base plate 135 and the second end portion of the rod portion 142 is connected to the elevation driving portion 141. The lifting and lowering drive unit 141 incorporates, for example, a servo motor, and the rod unit 142 moves up and down by the driving force of the servo motor. As a result, 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 lifting drive section 141 is fixed to the slider 162. Thus, the head unit 150 is suspended vertically to the slider 162. [ The guide rail 161 is provided so as to extend between the sheet conveying apparatus 110 and the bonding stage 171. The slider 162 reciprocates along the guide rail 161. The bonding head 120 moves between the peeling position where the sheet flake F1X is peeled from the separator sheet F3a and the bonding position where the sheet flake F1X is bonded to the optical display part P. [

A head driving mechanism for rotationally driving, lifting, and horizontally moving the bonding head 120 is constituted by the head driving device 130, the head elevating device 140 and the head moving device 160. [ The joining head 120 is driven by the head driving device 130 and the head moving device 160 and is rotated and horizontally moved on the sheet piece F1X supported on the seat stage 114 and on the joining stage 171 And transmits the optical display component (P) placed thereon. Thereby, the sheet member F1X is adhered to the holding surface 122a from the separator sheet F3a and the sheet member F1X is bonded (transferred) from the holding surface 122a to the optical display component P .

The bonding head 120 is moved horizontally in the first moving direction (e.g., the right direction) by the head moving device 160 while rotating in the first rotating direction (e.g., clockwise direction) by the head driving device 130 (E.g., the left end) of the holding surface 122a to the second end (e.g., the right end). The bonding head 120 is moved in the second moving direction (for example, the left direction) by the head moving device 160 while being rotated in the second rotating direction (for example, counterclockwise direction) by the head driving device 130, In the second direction from the second end (e.g., the right end) of the holding surface 122a to the first end (e.g., the left end).

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

The bonding stage 171 has a placement surface 171a on which the optical display part P is placed. The bonding stage 171 is configured to attract the optical display component P on the placement surface 171a by adsorbing the lower surface of the optical display component P (the surface opposite to the surface joining the sheet piece F1X) .

The folded-back panel 173 is a plate-shaped or bar-shaped member disposed along one side of the optical display component P. The double-layered plate 173 is fixed on the placement surface 171a. The height of the double-layered plate 173 substantially coincides with the height of the optical display part P. The double-layered plate 173 is disposed on the upstream side of the driving direction AFD with respect to the position where the optical display component P is placed.

The optical display part P is disposed adjacent to the double-layered board 173. The optical display part P is fixed on the placement surface 171a in a state in which the end portion of the optical display part P is in contact with the side surface of the double- Thus, the upper surface of the optical display part P and the upper surface of the double-layered board 173 form a continuous plane.

The double-dam plate 173 can be fixedly disposed at at least two positions (the first position and the second position) on the bonding stage 171. The first position is a position on the bonding stage 171 corresponding to the case in which the electric direction AFD is the first direction (for example, the position adjacent to the left side of the optical display component P) (For example, the position adjacent to the right side of the optical display component P) on the bonding stage 171 corresponding to the case where the direction AFD is the second direction.

The joining head 120 is configured such that the holding surface 122a located on the upstream side in the joining direction with respect to the sheet piece F1X is pressed against the upper surface of the folding plate 173, The sheet member F1X held on the holding surface 122a is joined to one surface of the optical display component P. [ The joining head 120 is moved from the outside of the optical display part P to bring the joining conditions such as load and speed into contact with the sheet piece F1 F1X).

The stage driving device 172 moves the bonding stage 171 in the direction orthogonal to the rolling direction AFD of the bonding head 120 and the rolling direction AFD of the bonding head 120. Further, the stage driving device 172 rotates the bonding stage 171 in a horizontal plane. The stage driving device 172 drives the bonding stage 171 to move the relative positions of the optical display component P held by the bonding stage 171 and the sheet flakes F1X held on the bonding head 120 Adjust. Thereby, alignment of the optical display part P and the sheet piece F1X is performed.

The control device 190 is configured to include 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 performing communication with an external device of the computer system and collectively controls operations of various devices constituting the bonding device 100 and various devices outside the bonding device 100 .

Hereinafter, the step of adhering the sheet piece F1X to the bonding head 120 with reference to Figs. 2A to 2C will be described.

The bonding head 120 is disposed above the sheet stage 114 in a state in which the bonding head 120 is tilted with respect to the sheet stage 114, as shown in Fig. The conveyance of the sheet flake F1X is stopped and the sheet flake F1X is stopped on the sheet stage 114. [ The sheet stage 114 supports the sheet piece F1X on the side of the separator sheet F3a. Then, the joining head 120 and the sheet piece F1X on the sheet stage 114 are positioned. The joining head 120 is inclined such that the upstream side in the motor-driven direction is positioned lower than the downstream side in the motor-driven direction. In the case of the present embodiment, the end on the sheet conveying downstream side is inclined so as to be positioned lower than the end on the sheet conveying upstream side.

When positioning of the joining head 120 and the sheet piece F1X is performed, the joining head 120 is lowered to a height at which the joining head 120 is in contact with the sheet piece F1X by the head elevating device 140. Thus, the end on the downstream side of the sheet conveyance of the joining head 120 is pressed onto the end on the sheet conveyance downstream side of the sheet piece F1X.

2B, by driving the rotary drive 136 and the head moving device 160 in synchronism, the joining head 120 is rotated (horizontally and horizontally) from the sheet conveyance downstream side toward the sheet conveying upstream side, ). Thus, the sheet flake F1X is gently adhered to the holding surface 122a from the sheet conveyance downstream side to the sheet conveying upstream side.

The winding section 112 and the nip roll section 113 are moved in the first period immediately after the bonding head 120 presses the holding surface 122a against the sheet flake F1X and starts rolling, (Reverse direction) in which the separator sheet F3a is unlocked in synchronization with the driving of the moving device 160. [ The separator sheet F3a is loosened on the upstream side of the nip roll section 113 and the sheet flap F1X and the separator sheet F3a on the downstream side of the sheet conveyance are lower than the part where the load is applied by the joint head 120, Is lifted above the seat stage 114 along the curvature of the holding surface 122a.

Since the separator sheet F3a is in a loose state, a force for separating the sheet piece F1X from the holding surface 122a is unlikely to occur at the end on the sheet conveyance downstream side of the sheet piece F1X. Therefore, the adhesion force between the sheet flake F1X and the holding surface 122a is increased, and the sheet flake F1X is reliably adhered to the holding surface 122a. In addition, by loosening the separator sheet F3a, it is suppressed that a large separating force is momentarily applied to the separator sheet F3a when the sheet flake F1X is peeled from the separator sheet F3a. Therefore, the breakage of the separator sheet F3a is suppressed.

The winding section 112 and the nip roll section 113 are separated from each other by the separator sheet 120 and the separator sheet 120. In the second period after the first period has elapsed and the bonding head 120 is stopped, F3a in the forward direction. As a result, the loosening of the separator sheet F3a is eliminated, and the separation of the sheet flakes F1X from the separator sheet F3a is promoted. The timing for switching the rotational direction of the winding unit 112 and the nip roll unit 113 from the reverse direction to the forward direction is set to be 5% to 70%, preferably 10% to 70%, for example, The completion timing is from% to 50%.

While the separator sheet F3a is unwound and wound by the winding unit 112 and the nip roll unit 113, the bonding head 120 is always kept in the same position by the rotation driving unit 136 and the head moving unit 160 Continue rolling in the direction. The joining head 120 is moved along the curvature of the holding surface 122a while pressing the holding surface 122a against the sheet piece F1X to peel the sheet piece F1X from the separator sheet F3a, 122a.

The surface protective film F4a of the sheet flake F1X is sequentially adhered to the holding surface 122a of the bonding head 120. [ The sheet flake F1X adhered to the holding surface 122a is peeled off from the separator sheet F3a and exposed to the adhesive layer F2a (bonding surface with the optical display component P). The bonding head 120 holding the sheet flake F1X is conveyed by the head moving device 160 to the bonding stage 171 on which the optical display component P is placed.

2A to 2C show a step of holding the sheet piece F1X of a good article free of defects in the sheet surface by the bonding head 120. However, The same processing is carried out also in the case of holding it in the storage unit 120. The bonding head 120 holding the sheet flake F1X of the defective product is moved to the untaped position (disposal position) (not shown) disposed at a position different from the bonding stage 171 by the head driving device 160 Lt; / RTI > Then, the defective sheet piece F1X is superimposed on the waste material sheet formed in the retracted position.

The shortcomings of the sheet flakes F1X are such that there are irregularities or scratches on the surface of the sheet flakes F1X where there is foreign matter consisting of at least one of solid, liquid or gas inside the sheet flakes F1X A part that becomes a bright spot due to distortion or material inclination of the sheet flake F1X, and the like.

Next, a process of joining (transferring) the sheet member F1X tacked (held) to the bonding head 120 with the optical display component P will be described with reference to Figs. 3A to 3B.

3A, the joining head 120 holding the sheet flake F1X is brought into contact with the sheet conveying apparatus 110 by the head elevating apparatus 140 with the adhesive layer F2a facing downward It rises to a height that does not interfere. The bonding head 120 is then transported by the head moving device 160 to a position above the bonding stage 171 on which the optical display component P is placed.

When the bonding head 120 moves from the position above the sheet stage 114 to the position above the bonding stage 171, for example, the two edges of the sheet flake F1X held on the holding surface 122a, And is captured by the device 181. The image of the sheet flake F1X picked up by the first image pickup device 181 is subjected to image analysis by a first image processing apparatus not shown and the positions of the two edge portions of the sheet flake F1X are detected. The information on the position of the edge of the sheet flake F1X detected by the first image processing apparatus is sent to the controller 190. [ The control device 190 confirms the placement position of the sheet flake F1X with respect to the bonding head 120 based on the information detected by the first image processing device.

The number of the sheet pieces F1X picked up by the first image pickup device 181 and the positions thereof are set to be equal to the number of the sheet pieces F1X picked up by the first image pickup device 181, I never do that. The number of the sheet flakes F1X picked up by the first image pickup device 181 can be freely selected from one to four ranges so long as the arrangement position of the sheet flakes F1X to the bonding head 120 can be confirmed. And the position of the corner portion to be imaged can be freely set.

The optical display component P held on the bonding stage 171 is picked up, for example, by the second imaging device 182. [ The second imaging device 182 captures, for example, an alignment mark or a black matrix provided on the optical display part P as an alignment reference. The image of the optical display component P picked up by the second image pickup device 182 is subjected to image analysis by a second image processing device (not shown), and the position of the alignment reference is detected. The information on the alignment reference position 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 placement 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 controls the stage driving device 172 based on the arrangement position of the sheet flake 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 control device 190 uses the stage driving device 172 to horizontally move the bonding stage 171 in the horizontal plane or rotate the bonding stage 171 in the horizontal plane. The relative splice position of the optical display part P held by the splicing stage 171 and the sheet piece F1X held by the splicing head 120 is adjusted.

3B, when the relative bonding positions of the optical display component P and the sheet piece F1X are adjusted, the head elevating device 140 causes the bonding head 120 to move to the optical display component P And descends to a contact height. The joining head 120 is inclined so that the end on the upstream side in the motor-driven direction is positioned lower than the end on the downstream side in the motor-driven direction. By lowering the joint head 120, the end of the joint head 120 positioned on the upstream side of the sheet piece F1X in the rolling direction is positioned on the upstream side of the optical display component P in the rolling direction, And is pressed against the upper surface.

3C, the rotational drive section 136 and the head moving apparatus 160 are driven in synchronism so that the joint head 120 is moved from the upper surface of the folded dam plate 173 to the upper surface of the optical display component P . The sheet piece F1X held on the holding surface 122a is gradually adhered to the upper surface of the optical display component P in accordance with the driving of the bonding head 120. [

The bonding head 120 has a weaker adhesive strength than the bonding surface of the sheet flake F1X (the adhesive layer F2a shown in FIG. 4), and the surface protection film F4a of the sheet flake F1X is repeatedly It can be adhered and peeled off. The sheet piece F1X pressed by the optical display component P on the side of the adhesive layer F2a is peeled off from the holding surface 122a and bonded to the upper surface of the optical display component P. Thus, the joining process of the sheet flakes F1X to the optical display part P is completed.

3A, 3B and 3C show a step of transferring the good sheet F1X without defects in the sheet surface from the bonding head 120 to the optical display component P, The same treatment is also performed when the sheet flake F1X of the defective article is joined to the waste material sheet formed in the close position.

As described above, in the bonding apparatus 100 of the present embodiment, while pressing the curved holding surface 122a of the bonding head 120 against the stationary sheet F1X on the sheet stage 114, The sheet piece F1X is peeled from the separator sheet F3a and held on the holding surface 122a by rolling the joining head 120 along the curvature of the surface 122a. Therefore, wrinkles are prevented from being generated in the sheet flakes F1X held by the bonding head 120 by the influence of the skew of the optical member sheet FX. Therefore, when joining the sheet member F1X to the optical display component P, generation of air bubbles between the sheet member F1X and the optical display component P is suppressed.

5 is a schematic view of a production system 1000 of an optical display device according to the first embodiment of the present invention. An optical display device is constituted by bonding an optical member to an optical display part (P). The size of the optical member is set based on the specification of the optical display device. The production system 1000 includes the bonding apparatus 100 described above as a bonding apparatus for bonding the sheet member as the optical member to the optical display part P.

The production system 1000 according to the present embodiment includes a cleaning apparatus 1001, a first bonding apparatus 1002, a second bonding apparatus 1003, a peeling apparatus 1004, a third bonding apparatus 1005, and a testing apparatus 1006 ). The first joining apparatus 1002, the second joining apparatus 1003, and the third joining apparatus 1005 have the configuration of the joining apparatus 100 described above. The cleaning apparatus 1001 and the first bonding apparatus 1002, the second bonding apparatus 1003 and the peeling apparatus 1004, the third bonding apparatus 1005 and the inspection apparatus 1006 are arranged in such a manner that the optical display component P And is disposed in a series of return lines for carrying.

The cleaning apparatus 1001 cleans the optical display component P carried in from a loader (not shown) to remove foreign substances adhering to the optical display component P. The cleaning device 1001 is a device for cleaning the optical display part P such that the cleaning device 1001 is capable of cleaning the first surface (e.g., the surface on which the image displayed on the display area is viewed) and the second surface (e.g., And the liquid on the first and second surfaces of the optical display component P is then removed by flushing. The cleaning device 1001 may be a dry type for removing static electricity and collecting dust on the front and back surfaces of the optical display part P. [ The optical display part P is, for example, a liquid crystal panel.

The first joining apparatus 1002 joins the first sheet piece to the first surface of the optical display part P. The first joining apparatus 1002, like the above-described joining apparatus 100, can transfer the first joining head to the first sheet member while rotating the joining head along the curvature of the holding surface while pressing the curved holding surface of the joining head against the stopped first sheet member, One sheet piece is peeled from the separator sheet and held on the holding surface. Therefore, when joining the first sheet piece to the optical display part P, generation of air bubbles between the first sheet part and the optical display part P is suppressed.

The first sheet piece is, for example, a monolithic type polarizing plate cut to a size corresponding to the outer size of the optical display part (P). The size corresponding to the outer size of the optical display part P means the size that does not cause a surplus part which is a problem in actual use when bonded to the optical display part P. [ The first sheet member has the same structure as the sheet member F1X shown in Fig.

For example, a display area for displaying an image is provided at the center of the optical display part P, and an electrical part (not shown) provided with a plurality of terminals to which a semiconductor chip, a flexible printed wiring, An attaching portion is provided. In this case, the first sheet member is, for example, an area which is equal to or larger than the size of the display area of the optical display part P and the size of the outer shape (outline shape when viewed from the plane) of the optical display part P, A sheet piece having a size of a region in which a functional portion such as an electric component attachment portion in the sheet P is avoided is used.

The second joining apparatus 1003 joins the second sheet piece to the second surface of the optical display part P. [ The second joining apparatus 1003, like the joining apparatus 100 described above, transmits the second joining head to the stationary second sheet piece by rolling the joining head along the curvature of the holding surface while pressing the curved holding surface of the joining head against the stationary second sheet member, Two sheet pieces are separated from the separator sheet and held on the holding surface. Therefore, when bonding the second sheet piece to the optical display part P, generation of air bubbles between the second sheet part and the optical display part P is suppressed.

The second sheet piece is, for example, a monolithic type polarizing plate cut to a size corresponding to the outer size of the optical display part (P). The second sheet member has the same structure as the sheet member F1X shown in Fig. The transmission axis of the second sheet member joined to the second surface of the optical display component P and the transmission axis of the first sheet member bonded to the first surface of the optical display component P are mutually orthogonal.

An inverting device (not shown) for inverting the front and back of the optical display component P is provided on the conveying line of the optical display component P between the first joining apparatus 1002 and the second joining apparatus 1003 . The optical display part P on which the first sheet piece is bonded to the first surface is supplied to the second joining apparatus 1002 in a state in which the optical sheet is inverted.

The peeling apparatus 1004 peels the surface protective film from the second sheet piece bonded to the second surface of the optical display component P. [

The third joining apparatus 1005 joins the third sheet piece to the surface of the second sheet member on which the surface protective film has been peeled off by the peeling apparatus 1004. By the third joining apparatus 1005, similarly to the joining apparatus 100 described above, by rolling the joining head along the curvature of the holding surface while pressing the curved holding surface of the joining head against the stopped third sheet piece, 3 The sheet piece is peeled from the separator sheet and held on the holding surface. Therefore, when joining the third sheet piece to the optical display part P, generation of air bubbles between the third sheet part and the optical display part P is suppressed.

The third sheet piece is, for example, a leaf-shaped brightness enhancement film cut to a size corresponding to the outer size of the optical display part (P). The brightness enhancement film is a reflection type polarizing plate that reflects linearly polarized light orthogonal to the transmission axis. The third sheet piece has the same configuration as the sheet piece F1X shown in Fig. The transmission axis of the second sheet piece joined to the second surface of the optical display part P and the transmission axis of the third sheet piece bonded to the second sheet piece are mutually parallel.

The inspection apparatus 1006 inspects whether or not the position of the first sheet piece, the second sheet piece and the third sheet piece is proper (the positional deviation is within the tolerance range) with respect to the optical display part P, and the like. The optical display part determined to be inappropriate for the position of the first sheet piece, the second sheet piece or the third sheet piece with respect to the optical display part P is discharged out of the system by a dispensing device (not shown).

The optical display component to which the first sheet piece, the second sheet piece and the third sheet piece are bonded may be subjected to an additional treatment such as defect inspection (inspection of a foreign object or the like) or mounting of electric parts, (DP).

In the production system 1000 described above, a bonding apparatus having the same configuration as the bonding apparatus 100 described above is used as the first bonding apparatus 1002, the second bonding apparatus 1003, and the third bonding apparatus 1005 have. Therefore, it is possible to provide the optical display device DP in which the generation of bubbles is suppressed.

[Second Embodiment]

Hereinafter, a production system of a bonding apparatus and an optical display device according to a second embodiment of the present invention will be described with reference to Figs. 6 to 8. Fig.

Fig. 6 is a view showing the cutting process of the sheet piece FXm in the production system of the present embodiment.

This embodiment differs from the first embodiment in that the sheet piece FXm joined to the optical display part P by the joining head has a desired size (a size set based on specifications of the optical display device) And the excess portion of the sheet piece FXm is cut by the cutting device 184 after the sheet piece FXm is bonded to the optical display part P It is a point. Therefore, in the following description, the process of cutting the sheet piece FXm will be mainly described. Components common to those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

The sectional structure of the sheet piece FXm is the same as the sheet piece F1X shown in Fig. The sheet piece FXm is obtained by cutting the elongated optical member sheet FX shown in Fig. 1 into a predetermined size. The sheet piece FXm is slightly larger than the size (the size of the first area FB) corresponding to the external size of the optical display part P, for example. The size corresponding to the outer size of the optical display part P means the size that does not cause a surplus part which is a problem in actual use when bonded to the optical display part P. [ Since the sheet piece FXm is larger than the size corresponding to the outer size of the optical display part P, the excess part (second area FS) which is a problem in practical use is cut by the cutting device 184.

The joining device for joining the sheet piece FXm to the optical display part P is the same as the joining device 100 described in the first embodiment. In the present embodiment, the detecting device 189 and the cutting device 184 are provided on the conveying line on the downstream side of the joining apparatus.

The detecting device 189 includes an image capturing device 183 for capturing an optical display part P to which the sheet piece FXm is bonded. The detecting device 189 detects the cut line WCL of the sheet piece FXm (the position at which the sheet piece FXm should be cut) based on the image pickup data of the image pickup device 183.

The image pickup device 183 picks up the optical display component P over the sheet piece FXm from above the optical display component P placed on the cutting stage 185, for example. The image pickup device 183 picks up an image of four corners of a substrate (for example, a color filter substrate) of the optical display component P to which the sheet piece FXm is bonded. The detection device 189 detects the position of the outer periphery of the substrate by, for example, image processing of the image pickup data, and detects the position of the outer periphery as a cut line WCL of the sheet piece FXm.

The information of the cut line WCL detected by the detecting 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 detecting device 189 to cut the sheet piece FXm along the cut line WCL. The first area FB opposing the display area of the sheet piece FXm is separated from the second area FS outside the first area FB so that the optical member FO of the desired size And is cut out from the sheet piece FXm.

The cut line WCL of the sheet piece FXm is detected for each optical display part P conveyed on the conveying line. The optical member FO having a size corresponding to the outer size of the optical display component P can be surely cut off from the sheet member FXm even if there is a variation in size for each optical display component P. [

In this specification, after the sheet piece FXm larger than the optical member FO of the target size is bonded to the optical display part P, the sheet piece FXm ) Is called a " window cutting method ". In the present embodiment, the optical member FO of a desired size is bonded to a desired position of the optical display component P by employing the window cutting method. By adopting the window cutting method, the following effects can be obtained.

(i) When the optical member is bonded to the optical display part P, the dimensional deviations of the optical display part P and the optical member FO and the dimensional deviation of the optical member FO with respect to the optical display part P The optical member FO, which is slightly larger than the size originally required, is bonded to the optical display component P in consideration of the bonding deviation (positional deviation) and the like. However, in this method, an extra area (frame area) not contributing to the display is formed in the peripheral portion of the display area of the optical display part P, which hinders miniaturization of the device. In the case of adopting the window cutting method, since the optical display part P after the sheet piece FXm is bonded is picked up and the sheet piece FXm is cut based on the picked-up image data, It is possible to securely arrange the optical member FO having the size of the optical member FO.

(ii) The direction of the optical axis of the sheet piece FXm may be distorted in a direction originally designed due to manufacturing errors. In this case, the direction of the optical axis of the sheet member FXm (optical member sheet FX) is measured in advance and the relative bonding position of the sheet member FXm and the optical display member P is adjusted based on the measurement result However, this adjustment can not be made if the size of the sheet member FXm is matched with the size of the objective optical member FO. In the window cutting method, the sheet piece FXm, which is larger than the optical member FO, is joined to the optical display part P, and then the excess portion of the sheet piece FXm is cut.

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

First, as shown in Fig. 7A, 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 is . The timing for detecting the optical axis may be the time when the master roll (RX) (see FIG. 1) is manufactured, or may be a time interval until the optical member sheet FX is pulled out from the master roll RX and half- cut. Data in the optical axis direction of the optical member sheet FX is stored in a storage device (not shown) associated with the position in the longitudinal direction and the position in the width direction of the optical member sheet FX.

The control device 190 acquires the data (inspection data of the in-plane distribution of the optical axis) of the optical axis of each inspection point CP from the above-mentioned storage device and obtains the optical member sheet FX at the portion where the sheet piece FXm is cut- (The region partitioned by the cut-off line CL) is detected.

7B, the angle between the optical axis direction and the edge line EL of the sheet piece FXm is detected for each inspection point CP, and the largest angle (maximum deflection angle) (= (? Max +? Min) / 2) between the maximum declination angle? Max and the minimum declination angle? Min is detected as the average declination angle when the smallest angle (minimum declination angle) is? The direction in which the average deviation angle? Mod is made with respect to the edge line EL of the sheet member FXm is detected as the direction of the average optical axis of the sheet member FXm. The declination angle is calculated, for example, by making the direction of the left turn positive and the direction of the right turning direction negative relative to the edge line EL of the sheet piece FXm.

The optical display component P is mounted so that the direction of the average optical axis of the optical member sheet FX detected by the above method is a desired angle with respect to one side of the display region P4 of the optical display component P. [ (Relative bonding position) of the sheet member FXm with respect to the sheet member FXm is determined. For example, when the optical axis direction of the optical member is set to 90 degrees with respect to one side of the display region P4 according to the design specification, the direction of the optical axis of the optical member sheet FX on the average, The sheet piece FXm is bonded to the optical display part P so as to form 90 DEG with respect to one side of the optical element P4.

Thereafter, the cut line WCL of the sheet piece FXm is detected by the detecting device 189 shown in Fig. 6 (a), and the cutting device 184 shown in Fig. 6 (b) , The sheet piece FXm is cut along the cut line WCL. Thus, 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. Therefore, it is possible to provide a narrow-frame optical display device DP with excellent display quality.

8 is a schematic view 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 adopting the window cutting method. The production system 2000 is provided with the bonding apparatus 100 described in the first embodiment as a bonding apparatus for bonding a sheet piece larger than the optical member to the optical display component P. [

The production system 2000 according to the present embodiment includes a cleaning apparatus 2001, a first bonding apparatus 2002, a first cutting apparatus 2003, a second bonding apparatus 2004, a second cutting apparatus 2005, A third bonding apparatus 2007, a third cutting apparatus 2008, and a testing apparatus 2009. The third bonding apparatus 2007, the third bonding apparatus 2008, The cleaning apparatus 2001 and the first bonding apparatus 2002 and the first cutting apparatus 2003 and the second bonding apparatus 2004 and the second cutting apparatus 2005 and 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 conveyance lines for conveying the optical display part 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 same as the cleaning device 2001 of the first embodiment, The first bonding apparatus 1002, the second bonding apparatus 1003, the peeling apparatus 1004, the third bonding apparatus 1005, and the inspection apparatus 1006, respectively. However, in the first joining apparatus 2002, the second joining apparatus 2004, and the third joining apparatus 2007, a sheet piece slightly larger than the objective optical member is joined 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 the detecting device 189 described above. That is, in the first cutting device 2003, the second cutting device 2005 and the third cutting device 2008, the optical display part P in which the sheet piece FXm larger than the objective optical component is joined, Is picked up by the image pickup device and the surplus portion of the sheet is cut based on the picked-up image data. Therefore, it is possible to provide a narrow-frame optical display device DP with excellent display quality.

While the preferred embodiments of the present invention have been described with reference to the accompanying drawings, it is needless to say that the present invention is not limited to these examples. Various shapes, combinations, and the like of each component shown in the above-described example are merely examples, and can be variously changed based on design requirements and the like within a range not deviating from the general knowledge of the present invention. For example, in the above embodiment, the bonding head 120 has an arcuate holding surface 122a, but the configuration of the bonding head 120 is not limited to this. The bonding head 120 may have a curved retaining surface other than a circular arc, or may have a cylindrical retaining surface.

According to the joining apparatus, the joining method, the production system of the optical display apparatus, and the production method of the optical display apparatus according to the present invention, it is possible to provide a joining apparatus capable of suppressing the generation of bubbles when transferring sheet pieces, And a production method of the optical display device.

100: joining device 111:
112: winding section 114: seat stage
115: cut part 120: bonding head
122a: holding surface 171: bonding stage
173: double folding plate 184: cutting device
189: Detection device
1000: Optical display production system
1002, 1003, 1005:
2000: Optical display production system
2002, 2004, 2007: bonding device
2003, 2005, 2008: Cutting device
DP: optical display device F1X, FXm: sheet
F3a: separator sheet FO: optical member
FX: optical member sheet P: optical display part
RX: Roll of disc WCL: Cut line

Claims (10)

A joining apparatus for joining a sheet piece to an optical display component,
A winding unit for winding the optical element sheet together with the separator sheet from the master roll,
A cut portion for forming the sheet piece by cutting the optical member sheet while remaining the separator sheet;
A sheet stage for supporting the sheet piece on the side of the separator sheet,
A bonding stage on which the optical display component is placed,
The sheet piece is separated from the separator sheet and held on the holding surface by pressing the curved holding surface against the sheet piece stopped on the sheet stage and rolling along the curvature of the holding surface, And a joining head for joining the sheet piece held on the holding surface to the optical display part placed on the joining stage
. The sheet feeding apparatus according to claim 1, further comprising a winding section for winding up the separator sheet, which is separated from the separator sheet by the joint head after the sheet piece is peeled off,
Wherein the winding section rotates in a direction in which the separator sheet is unfolded in a first period immediately after the bonding head presses the holding surface against the sheet piece and starts rolling, and after the first period has elapsed, Wherein the separator sheet is rotated in a direction in which the separator sheet is wound. The optical display device according to claim 1 or 2, wherein a lamination plate is provided adjacent to the optical display component on the bonding stage,
The joining head continuously rotates the upper surface of the folded dam and the upper surface of the optical display part after the holding surface is pressed against the upper surface of the folded dam so that the sheet held on the holding surface is moved to the optical display To the component. An optical display device production system comprising an optical member and an optical member joined to each other,
And a joining device for joining the sheet piece as the optical member to the optical display component,
The joining apparatus according to any one of claims 1 to 3, wherein the joining apparatus is the joining apparatus according to any one of claims 1 to 3. An optical display device production system comprising an optical member and an optical member joined to each other,
A joining device for joining a sheet piece larger than the optical member to the optical display component,
A detection device that picks up the optical display part to which the sheet piece is bonded and detects a cut line of the sheet piece based on the pickup data;
And a cutting device for cutting the optical member from the sheet piece by cutting the sheet piece bonded to the optical display part along the cut line
Lt; / RTI >
The joining apparatus according to any one of claims 1 to 3, wherein the joining apparatus is the joining apparatus according to any one of claims 1 to 3. A joining method for joining a sheet piece to an optical display part,
An extracting step of separating the optical member sheet from the original roll together with the separator sheet,
A cutting step of forming the sheet piece by cutting the optical member sheet while remaining the separator sheet;
A supporting step of supporting the sheet piece on the side of the separator sheet by a sheet stage,
A placing step of placing the optical display part on a bonding stage,
The sheet piece is peeled from the separator sheet by moving 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, And a joining step of joining the sheet piece held on the holding surface to the optical display part placed on the bonding stage
≪ / RTI > The method according to claim 6, further comprising a winding step of winding the separator sheet, which is singularly separated from the separator sheet by the joint head,
In the winding step, in the first period immediately after the bonding head presses the holding surface against the sheet piece to start rolling, the winding section is rotated in a direction to unwind the separator sheet, and the first period The separator sheet is rotated in a direction in which the separator sheet is wound up in the second period after the end of the power transmission. 8. The optical display device according to claim 6 or 7, wherein a lamination plate is provided on the bonding stage adjacent to the optical display component,
The joining head continuously presses the upper surface of the folded-back plate and the upper surface of the optical display component after the holding surface of the joining head is pressed against the upper surface of the folded- And the one sheet piece is joined to the optical display part. A production method of an optical display device comprising an optical member and an optical display part bonded to each other,
And a joining step of joining the sheet member as the optical member to the optical display component,
Wherein the joining step is carried out using the joining method according to any one of claims 6 to 8. A production method of an optical display device comprising an optical member and an optical display part bonded to each other,
A joining step of joining a sheet piece larger than the optical member to the optical display part,
A detection step of picking up the optical display part to which the sheet piece is bonded and detecting a cut line of the sheet piece based on the picked-up image data;
A cutting step of cutting the optical piece from the sheet piece by cutting the sheet piece bonded to the optical display part along the cut line
Lt; / RTI >
Wherein the joining step is carried out using the joining method according to any one of claims 6 to 8.

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