JP2016012001A - Bonding device, bonding method, production system of optical display device, and production method of optical display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bonding device capable of suppressing air bubbles or bonding irregularity.SOLUTION: The bonding device includes: a bonding stage 171 where an optical display component P is mounted; a bonding head 120 that holds a sheet piece F1X on a curved holding face 122a and bonds the sheet piece F1X to the optical display component P by rolling along the curvature of the holding face 122a while pressing the sheet piece F1X held on the holding face 122a to the optical display component P mounted on the bonding stage 171; a first load adjusting part 139a that adjusts a load added to the sheet piece F1X on the optical display component P at a first end in a head width direction orthogonal to the rolling direction of the bonding head 120; and a second load adjusting part 139b that adjusts a load added to the sheet piece F1X on the optical display component P at a second end in the head width direction of the bonding head 120.

Description

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

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

Japanese Patent No. 4482757

  In the apparatus of Patent Document 1, the shape of the head is an arc shape so that bubbles and uneven bonding are not generated when the sheet material is transferred to an object to be pasted. However, bubbles and bonding unevenness are also generated by the tilt of the head or stage.

  The objective of this invention is providing the bonding apparatus which can suppress generation | occurrence | production of a bubble and bonding nonuniformity, the bonding method, the production system of an optical display device, and the production method of an optical display device.

  The bonding apparatus which concerns on 1 aspect of this invention is a bonding apparatus which bonds a sheet piece to an optical display component, Comprising: The bonding stage in which the said optical display component is mounted, The holding | maintenance which curved the said sheet piece And holding the sheet piece held on the holding surface against the optical display component placed on the bonding stage while rolling along the curvature of the holding surface. In the bonding head to be bonded to the optical display component and the first end portion in the head width direction orthogonal to the rolling direction of the bonding head, the load applied to the sheet piece on the optical display component is adjusted. And a second load adjusting unit that adjusts a load applied to the sheet piece on the optical display component at the second end in the head width direction of the bonding head.

  The bonding apparatus which concerns on 1 aspect of this invention WHEREIN: Said 1st load adjustment part was connected to the said 1st end part of the said bonding head, and the said bonding head was mounted in the said bonding stage. The first air cylinder is pressed against the optical display component, and the second load adjusting unit is connected to the second end of the bonding head, and the bonding head is placed on the bonding stage. The second air cylinder may be pressed against the optical display component.

  The bonding apparatus which concerns on 1 aspect of this invention WHEREIN: A backing plate is provided adjacent to the said optical display component on the said bonding stage, and as for the said bonding head, the said holding surface is pressed on the upper surface of the said backing plate. Then, the sheet piece held on the holding surface can be bonded to the optical display component by continuously rolling the upper surface of the backing plate and the upper surface of the optical display component.

  The bonding apparatus which concerns on 1 aspect of this invention WHEREIN: The unwinding part which unwinds an optical member sheet | seat with a separator sheet from a raw fabric roll, and cut | disconnects the said optical member sheet | seat leaving the said separator sheet, and forms the said sheet piece. A cutting portion and a sheet stage that supports the sheet piece from the separator sheet side, and the laminating head curves the holding surface while pressing the holding surface against the sheet piece stationary on the sheet stage. The sheet piece can be peeled from the separator sheet and held on the holding surface.

  The bonding apparatus which concerns on 1 aspect of this invention WHEREIN: After the said sheet piece peeled from the said separator sheet with the said bonding head, the winding part which winds up the said separator sheet used alone is included, The said winding part The first period immediately after the laminating head presses the holding surface against the sheet piece and starts rolling is rotated in the direction of unwinding the separator sheet, and after the first period has elapsed. In the second period until the rolling is completed, the separator sheet can be rotated in the winding direction.

  An optical display device production system according to a first aspect of the present invention is an optical display device production system in which an optical member is bonded to an optical display component, the sheet being the optical member on the optical display component The bonding apparatus which includes the bonding apparatus which bonds a piece is the bonding apparatus which concerns on 1 aspect of this invention mentioned above.

  An optical display device production system according to a second aspect of the present invention is an optical display device production system in which an optical member is bonded to an optical display component, and the optical display component is larger than the optical member. A bonding apparatus for bonding a sheet piece, an image of the optical display component to which the sheet piece is bonded, a detection device for detecting a cut line of the sheet piece based on the imaging data, and the optical display A cutting device that cuts out the optical member from the sheet piece by cutting the sheet piece bonded to a part along the cut line, and the bonding device is an aspect of the present invention described above. It is the bonding apparatus which concerns on.

  The bonding method which concerns on 1 aspect of this invention is a bonding method which bonds a sheet piece to an optical display component, Comprising: The mounting step which mounts the said optical display component on a bonding stage, and the said sheet piece. While holding on the curved holding surface of the bonding head, the bonding is performed along the curve of the holding surface while pressing the sheet piece held on the holding surface against the optical display component placed on the bonding stage. In the bonding step of bonding the sheet piece to the optical display component by rolling the head, and in the first end portion in the head width direction orthogonal to the rolling direction of the bonding head, the optical display component A first load adjusting step for adjusting a load applied to the sheet piece above, and a second end for adjusting the load applied to the sheet piece on the optical display component at a second end in the head width direction of the bonding head. Two loads Including an adjusting step, the.

  In the bonding method according to one aspect of the present invention, the first load adjustment step is performed by using the first air cylinder connected to the first end portion of the bonding head to turn the bonding head into the bonding stage. A step of pressing the mounted optical display component toward the optical display component, wherein the second load adjusting step is configured to press the bonding head by a second air cylinder connected to the second end of the bonding head. It can be a step of pressing toward the optical display component placed on the bonding stage.

  In the bonding method according to one aspect of the present invention, a backing plate is provided adjacent to the optical display component on the pasting stage, and in the pasting step, the holding surface of the pasting head is the backing plate. After being pressed against the upper surface of the sheet, the bonding head continuously rolls on the upper surface of the backing plate and the upper surface of the optical display component, so that the sheet piece held on the holding surface becomes the optical display component. It can be pasted.

  In the bonding method according to one aspect of the present invention, an unwinding step of unwinding the optical member sheet from the raw roll together with the separator sheet, and cutting the optical member sheet leaving the separator sheet to form the sheet piece. A cutting step; and a supporting step of supporting the sheet piece from the separator sheet side by a sheet stage, wherein in the bonding step, the holding piece of the bonding head is stationary on the sheet stage. The sheet piece can be peeled from the separator sheet and held on the holding surface by rolling the bonding head along the curve of the holding surface while being pressed onto the holding surface.

  In the bonding method according to an aspect of the present invention, after the sheet piece is peeled from the separator sheet by the bonding head, a winding step of winding the separator sheet alone by a winding unit, In the winding step, the first period immediately after the laminating head presses the holding surface against the sheet piece and starts rolling, rotates the winding portion in a direction to unwind the separator sheet, After the first period has elapsed, the winding part can be rotated in the direction of winding the separator sheet during a second period until the rolling is completed.

  The optical display device production method according to the first aspect of the present invention is an optical display device production method in which an optical member is bonded to an optical display component, and the optical display component is a sheet that is the optical member. A bonding step of bonding pieces is performed, and the bonding step is performed using the bonding method according to one embodiment of the present invention described above.

  The optical display device production method according to the second aspect of the present invention is an optical display device production method in which an optical member is bonded to an optical display component, and is larger than the optical member in the optical display component. A bonding step of bonding a sheet piece, an image of the optical display component to which the sheet piece is bonded, a detection step of detecting a cut line of the sheet piece based on the imaging data, and the optical display A cutting step of cutting the optical member from the sheet piece by cutting the sheet piece bonded to a part along the cut line, and the bonding step is an aspect of the present invention described above. It is performed using the pasting method concerning.

  In the optical display device production system and production method according to the first aspect and the optical display device production system and production method according to the second aspect, the “optical member” is based on the specifications of the optical display device. An optical member having a set size. The “size set based on the specifications of the optical display device” means, for example, a size corresponding to the external dimension of the optical display component. Specifically, when the size is bonded to the optical display component, It means a size that does not cause a surplus part that causes a problem in use.

  For example, a display area for displaying an image is provided at the center of the optical display component, and an electrical component including a plurality of terminals to which a semiconductor chip, a flexible printed wiring, or the like is connected at the end of the optical display component A mounting portion is provided. In this case, the “optical member” is, for example, an area that is not less than the size of the display area of the optical display component and not more than the size of the outer shape (contour shape in plan view) of the optical display component, and the optical display component. In this case, an optical member having a size that avoids a functional part such as an electrical component mounting part is used.

  In the production system and production method for the optical display device according to the second aspect, the “sheet piece larger than the optical member” is a target size (a size set based on the specifications of the optical display device). A sheet piece slightly larger than the optical member. A portion larger than the optical member in the sheet piece is a cutting target as an excessive portion. By separating the surplus portion from the sheet piece, an optical member having a target size can be obtained.

  ADVANTAGE OF THE INVENTION According to this invention, the bonding apparatus which can suppress a bubble and bonding nonuniformity, the bonding method, the production system of an optical display device, and the production method of an optical display device can be provided.

It is the schematic of the bonding apparatus which concerns on 1st embodiment of this invention. It is the figure which looked at the bonding apparatus from the rolling direction of the bonding head. It is a figure which shows the process of sticking a sheet piece to the bonding head. It is a figure which shows the process of transcribe | transferring the sheet piece stuck on the bonding head to an optical display component. It is sectional drawing of an optical member sheet | seat. It is the schematic of the production system of the optical display device which concerns on 1st embodiment of this invention. It is a figure which shows the cutting process of the sheet piece in the bonding apparatus which concerns on 2nd embodiment of this invention. It is a figure explaining the method to determine the bonding position of an optical display component and a sheet piece. It is the schematic of the production system of the optical display device which concerns on 2nd embodiment of this invention.

[First embodiment]
Hereinafter, the production system of the bonding apparatus and the optical display device according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 6.

Drawing 1 is a schematic diagram of pasting device 100 of this embodiment.
The bonding apparatus 100 of this embodiment bonds the sheet piece F1X obtained by half-cutting the elongate optical member sheet | seat FX on one surface of the optical display component P. As shown in FIG.

  As the optical display component P, for example, a panel-shaped 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 enhancement film, or the like can be used. In the present embodiment, for example, a polarizing film shown in FIG. 5 is used as the optical member sheet FX.

  The optical member sheet FX in FIG. 5 includes a film-shaped optical member main body F1a, an adhesive layer F2a provided on one surface (upper surface in FIG. 5) of the optical member main body F1a, and an optical member main body through the adhesive layer F2a. Separator sheet F3a laminated | stacked on one side of F1a so that isolation | separation was possible, and the surface protection film F4a laminated | stacked on the other surface (lower surface in FIG. 5) of the optical member main body F1a.

  The optical member main body F1a functions as a polarizing plate, for example, and is bonded over the display area of the optical display component P or the display area and its peripheral area. The optical member body F1a is bonded to the optical display component P via the adhesive layer F2a in a state where the separator sheet F3a is separated while leaving the adhesive layer F2a on one surface thereof. Hereinafter, the part remove | excluding the separator sheet F3a from the optical member sheet | seat FX is called the bonding sheet | seat F5. Sheet piece F1X is a sheet piece of bonding sheet F5 obtained by cutting long bonding sheet F5 into a predetermined size.

  The separator sheet F3a protects the adhesive layer F2a and the optical member body F1a before being separated from the adhesive layer F2a. The surface protective film F4a is bonded to the optical display component P together with the optical member body F1a. The surface protective film F4a is disposed on the side opposite to the optical display component P with respect to the optical member body F1a to protect the optical member 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 body F1a is bonded to the sheet-like polarizer F6, the first film F7 bonded to one surface of the polarizer F6 with an adhesive or the like, and the other surface of the polarizer F6 with an adhesive or the like. And a second film F8. The first film F7 and the second film F8 are protective films that protect the polarizer F6, for example.

  The optical member main body F1a may have a single-layer structure composed of a single optical layer or a stacked structure in which a plurality of optical layers are stacked on each other. In addition to the polarizer F6, the optical layer may be a retardation film, a brightness enhancement film, or the like. At least one of the first film F7 and the second film F8 may be subjected to a surface treatment that provides an effect such as anti-glare including hard coat treatment and anti-glare treatment for protecting the outermost surface of the liquid crystal display element. The optical member body F1a may not include at least one of the first film F7 and the second film F8. For example, when the first film F7 is omitted, the separator sheet F3a may be bonded to one surface of the optical member body F1a via the adhesive layer F2a.

  As shown in FIG. 1, the bonding apparatus 100 of the present embodiment includes, for example, 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, for example, an unwinding unit 111, a winding unit 112, a nip roll unit 113, a sheet stage 114, and a cutting unit 115.

  The unwinding unit 111 holds the original fabric roll RX around which the long optical member sheet FX is wound, and feeds the optical member sheet FX in the longitudinal direction thereof. For example, the optical member sheet FX has a width equivalent to the length of the first side (for example, 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.

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

  The cut part 115 cuts (half-cuts) the optical member sheet FX unwound from the raw roll RX in the thickness direction while leaving the separator sheet F3a. For example, the cut portion 115 is fed out by a length equivalent to the length of the second side (for example, the long side) of the display area of the optical display component P in the length direction orthogonal to the sheet width direction of the optical member sheet FX. Every time, a part in the thickness direction of the optical member sheet FX is cut over the entire width in the sheet width direction.

  The cut part 115 adjusts the advancing / retreating position of the cutting blade so that the separator sheet F3a is not broken by the tension acting during the conveyance of the optical member sheet FX (so that a predetermined thickness remains on the separator sheet F3a), and the adhesive layer Half-cut to the vicinity of the interface between F2a and separator sheet F3a. A laser cutting device can be used as the cutting unit 115 instead of the cutting blade.

  The optical member sheet FX after the half cut has a cut line extending over the entire width in the sheet width direction of the optical member sheet FX by cutting the optical member main body F1a, the adhesive layer F2a and the surface protection film F4a in the thickness direction. 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 area in the longitudinal direction by a 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, imaging devices that capture the image of the edge of the optical member sheet FX are arranged at a plurality of locations in the sheet conveyance direction, and the control device 190 has a plurality of locations based on the images of the edges at the plurality of locations captured by these imaging devices. Detect edge positions. Then, based on the detected relative positional relationship between the plurality of edges, the control device 190 calculates an inclination angle of the edge with respect to the sheet conveyance direction at the cutting position of the optical member sheet FX. Then, the cutting unit 115 cuts the optical member sheet FX at a cutting angle controlled by the control device 190. Thereby, even when the optical member sheet FX meanders in the sheet width direction, the optical member sheet FX can be accurately cut in the target direction.

  The sheet stage 114 supports the lower surface (the surface on the separator sheet F3a side) of the optical member sheet FX unwound from the original fabric roll RX. For example, the sheet stage 114 is provided so as to straddle both a cut position where the optical member sheet FX is half-cut by the cut portion 115 and a separation position where the sheet piece F1X is separated from the separator sheet F3a.

  The nip roll portion 113 includes a first nip roll 113a and a second nip roll 113b that are arranged in parallel with each other in the rotation axis direction. The first nip roll 113a and the second nip roll 113b rotate in synchronization with each other, whereby the separator sheet F3a is transported from the upstream side of the sheet transport to the downstream side of the sheet transport (in the direction of winding around the winding unit 112), and the downstream side of the sheet transport To the upstream side of the sheet conveyance (in the unwinding direction from the winding unit 112).

  The winding part 112 winds up the separator sheet F3a which became independent after the sheet piece F1X was peeled from the separator sheet F3a by the bonding head 120. The winding unit 112 winds and unwinds the separator sheet F3a by rotating in synchronization with the first nip roll 113a and the second nip roll 113b.

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

  The bonding head 120 includes, for example, a head main body 121 and an adhesive sheet 122. The head main body 121 has a curved surface with a flat upper surface and a lower surface convex downward. An adhesive sheet 122 is fixed to the lower surface of the head main body 121. For example, an adhesive silicone rubber is used as the adhesive sheet 122. The surface of the pressure-sensitive adhesive sheet 122 is a curved holding surface 122a for attaching and holding the sheet piece F1X. The holding surface 122a has, for example, a weaker bonding force than the bonding surface (adhesive layer F2a) of the sheet piece F1X, and the surface protection film F4a of the sheet piece F1X can be repeatedly bonded and peeled off.

  The bonding head 120 peels off the sheet piece F1X from the separator sheet F3a by rolling along the curve of the holding surface 122a while pressing the holding surface 122a curved on the sheet piece F1X supported on the sheet stage 114. It is 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. Bonded to the optical display component P.

  Drawing 2 is a figure which looked at pasting device 100 from the rolling direction of the pasting head.

  As shown in FIGS. 1 and 2, the head driving device 130 includes, for example, a base plate 135, a rotation driving unit 136, a rod unit 137, a first load adjusting unit 139a, and a second load adjusting unit 139b. Including.

  The bonding head 120 is connected to the rotation support shaft 136a of the rotation drive unit 136 via a rod part 137 connected to the center of the upper surface of the head main body 121. The rotation support shaft 136a is fixed to the base plate 135. The bonding head 120 is suspended from the lower surface of the base plate 135 via the rod portion 137 and the rotation support shaft 136a so as to be freely rotatable. The holding surface 122a is, for example, an arcuate curved surface with the rotation support shaft 136a as the center.

  The bonding head 120 is rotated by the rotation drive unit 136 around the rotation support shaft 136a within a predetermined angle range. Thereby, sticking 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.

  For example, the first load adjustment unit 139a adjusts the load applied to the sheet piece F1X on the optical display component P at the first end in the horizontal direction (head width direction) orthogonal to the rolling direction of the bonding head 120. . The second load adjustment unit 139b adjusts the load applied to the sheet piece F1X on the optical display component P at, for example, the second end of the bonding head 120 in the head width direction. The 1st end part and 2nd end part of the bonding head 120 should just be a part arrange | positioned on the one side and the other side on both sides of the center part of the bonding head 120, and the position is not specifically limited. Although the configuration and arrangement of the first load adjustment unit 139a and the second load adjustment unit 139b are arbitrary, in the present embodiment, the first load adjustment unit 139a and the second load adjustment unit 139b have, for example, the same configuration. For example, the first load adjustment unit 139a and the second load adjustment unit 139b are provided so as to be symmetric with respect to the central portion in the head width direction.

  In this specification, the first load adjustment unit 139a and the second load adjustment unit 139b are collectively referred to as “load adjustment unit 139”. When distinguishing the first load adjustment unit 139a and the second load adjustment unit 139b, the load adjustment unit 139 and its components are given the letters "first" or "second", and the end of the code. “A” or “b” is added.

  Hereinafter, the configuration of the load adjusting unit 139 will be described with reference to FIGS. 1 and 2.

  The load adjusting unit 139 is, for example, an air cylinder that includes a cylinder body 131, a cylinder rod 132, a piston 138, and a regulator REG. The 1st load adjustment part 139a is connected to the 1st end part of the head width direction of the bonding head 120, for example, and biases the bonding head 120 toward the downward direction from upper direction. The 2nd load adjustment part 139b is connected to the 2nd edge part of the head width direction of the bonding head 120, for example, and biases the bonding head 120 toward the downward direction from upper direction.

  A first end of the cylinder rod 132 is connected to a piston 138 in the cylinder body 131. The second end portion of the cylinder rod 132 is connected to the center portion in the rolling direction on the upper surface of the head main body portion 121.

  The cylinder body 131 is connected to the air supply pipe AFL via a regulator REG. The load adjusting unit 139 moves the piston 138 and the cylinder rod 132 in the cylinder main body 131 in the vertical direction by the pressure of air introduced into the cylinder main body 131. The load applied to the sheet piece F1X on the optical display component P is adjusted by adjusting the air supply amount to the cylinder body 131 by the regulator REG.

  The amount of air supplied to the first cylinder body 131a and the amount of air supplied to the second cylinder body 131b are independently controlled by the control device 190. Thereby, the load La of the 1st end part side of the bonding head 120 and the load Lb of the 2nd end part side of the bonding head 120 are controlled independently.

  When the bonding process is performed using the bonding apparatus 100, the load distribution in the head width direction is measured in advance using pressure-sensitive paper or the like. The user controls the amount of air supplied to the first cylinder body 131a and the amount of air supplied to the second cylinder body 131b based on the measurement result of the load distribution. Thereby, the load applied to the sheet piece F1X on the optical display component P is made uniform in the head width direction.

  When operating the bonding apparatus 100, the horizontal adjustment of the bonding head 120 and the bonding stage 171 is also performed in advance. However, sufficient leveling may not be obtained depending on the performance of the leveling mechanism. Even in such a case, if the load is adjusted at both ends in the head width direction by the first load adjusting unit 139a and the second load adjusting unit 139b, bubbles and uneven bonding due to load non-uniformity are generated. Can be suppressed.

  Returning to FIG. 1, the head elevating device 140 includes an elevating drive unit 141 and a rod unit 142. A first end portion of the rod portion 142 is fixed to the upper surface of the base plate 135, and a second end portion of the rod portion 142 is connected to the elevating drive portion 141. The elevating drive unit 141 includes, for example, a servo motor, and the rod unit 142 moves in the vertical direction by the driving force of the servo motor. Thereby, the bonding head 120 moves in the vertical direction.

  The head moving device 160 includes a guide rail 161 and a slider 162. An upper end portion of the lifting drive unit 141 is fixed to the slider 162. As a result, the head unit 150 is suspended vertically from the slider 162. The guide rail 161 is provided so as to straddle between the sheet conveying apparatus 110 and the bonding stage 171. The slider 162 reciprocates along the guide rail 161. Thereby, the bonding head 120 moves between the peeling position which peels the sheet piece F1X from the separator sheet F3a, and the bonding position which bonds the sheet piece F1X 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 driving mechanism that rotationally drives, moves up and down, and moves horizontally. The bonding head 120 is driven by the head driving device 130 and the head moving device 160 to rotate and move horizontally, so that the optical display placed on the sheet piece F1X supported by the sheet stage 114 and on the bonding stage 171. Roll on part P. Thereby, sticking 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 moving direction (for example, right direction) by the head moving device 160 while being rotated in the first rotating direction (for example, clockwise direction) by the head driving device 130, The holding surface 122a can roll in a first direction from the first end (for example, the left end) to the second end (for example, the right end). Further, the bonding head 120 is horizontally moved in the second movement direction (for example, the left direction) by the head moving device 160 while being rotated in the second rotation direction (for example, the counterclockwise direction) by the head driving device 130. Thereby, it can roll in the 2nd direction which goes to a 1st end part (for example, left end part) from the 2nd end part (for example, right end part) of the holding surface 122a.

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

  The bonding stage 171 has a placement surface 171a on which the optical display component P is placed. For example, the bonding stage 171 holds the optical display component P on the mounting surface 171a by sucking the lower surface of the optical display component P (the surface opposite to the surface to be bonded to the sheet piece F1X).

  The contact plate 173 is a plate-shaped or bar-shaped member disposed along one side of the optical display component P. The contact plate 173 is fixed on the placement surface 171a. The height of the contact plate 173 substantially matches the height of the optical display component P. The contact plate 173 is arranged on the upstream side in the rolling direction AFD from the position where the optical display component P is placed.

  The optical display component P is disposed adjacent to the contact plate 173. The optical display component P is fixed on the mounting surface 171a in a state where the end portion is in contact with the side surface of the contact plate 173. Thereby, a plane in which the upper surface of the optical display component P and the upper surface of the contact plate 173 are continuous is formed.

  The backing plate 173 can be fixedly disposed at at least two places (first position and second position) on the bonding stage 171. The first position is a position on the bonding stage 171 corresponding to the case where the rolling direction AFD is the first direction (for example, the position adjacent to the left of the optical display component P), and the second position is the rolling position. This is a position on the bonding stage 171 corresponding to the case where the moving direction AFD is the second direction (for example, the position on the right side of the optical display component P).

  In the bonding head 120, after the holding surface 122 a located on the upstream side of the bonding direction ADF from the sheet F <b> 1 </ b> X is pressed against the upper surface of the backing plate 173, the bonding head 120 is placed on the upper surface of the backing plate 173 and 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 by continuously rolling the upper surface of the optical display component P. Before the sheet piece F1X and the optical display component P are brought into contact with each other, the laminating head 120 is allowed to run outside the optical display component P so that the bonding conditions such as the load and the speed are made uniform throughout the sheet piece F1X. Can do.

  The stage driving 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. Moreover, the stage drive device 172 rotates the bonding stage 171 in a horizontal plane. The stage drive device 172 adjusts the relative bonding position between the optical display component P held by the bonding stage 171 and the sheet piece F1X held by the bonding head 120 by driving the bonding stage 171. Thereby, alignment with the optical display component P and the sheet piece F1X is performed.

  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 and a hard disk. The control device 190 includes an interface capable of executing communication with an external device of the computer system, and comprehensively controls operations of various devices constituting the bonding device 100 and various devices outside the bonding device 100.

  Hereinafter, the process of sticking the sheet piece F1X to the bonding head 120 will be described with reference to FIG.

  As shown in FIG. 3A, the bonding head 120 is disposed above the sheet stage 114 in a state where the bonding head 120 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 positioned below the downstream side in the rolling direction. In the case of this embodiment, the end of the sheet conveyance downstream side is inclined so as to be positioned below the end of the sheet conveyance upstream side.

  If positioning with the bonding head 120 and the sheet piece F1X is performed, the bonding head 120 will fall to the height which contacts the sheet piece F1X with the head raising / lowering apparatus 140. FIG. Thereby, the edge part of the sheet conveyance downstream of the bonding head 120 is pressed on the edge part of the sheet piece F1X of the sheet conveyance downstream.

  Next, as shown in FIG. 3B, the rotation driving unit 136 and the head moving device 160 are driven in synchronization to roll the bonding head 120 from the sheet conveying downstream side toward the sheet conveying upstream side. (Rotate and move horizontally). Accordingly, the sheet piece F1X is gradually attached to the holding surface 122a from the sheet conveying downstream side to the sheet conveying upstream side.

  In the first period immediately after the bonding head 120 presses the holding surface 122a against the sheet piece F1X and starts rolling, the winding unit 112 and the nip roll unit 113 are driven to drive the rotation driving unit 136 and the head moving device 160. Synchronously, the separator sheet F3a rotates in the unwinding direction (reverse direction). Thereby, the separator sheet F3a is loosened on the upstream side of the nip roll portion 113, and the sheet piece F1X and the separator sheet F3a on the downstream side of the sheet conveyance with respect to the portion on which the load is applied by the bonding head 120 follow the curvature of the holding surface 122a. It floats above the sheet stage 114.

  Since the separator sheet F3a is in a slack state, a force for peeling the sheet piece F1X from the holding surface 122a is unlikely to occur at the end of the sheet piece F1X on the downstream side of the sheet conveyance. Therefore, the adhesive force between the sheet piece F1X and the holding surface 122a is increased, and the sheet piece F1X is reliably attached to the holding surface 122a. Moreover, by loosening the separator sheet F3a, when the sheet piece F1X is peeled from the separator sheet F3a, momentary large peeling force is suppressed from being applied to the separator sheet F3a. Therefore, the separator sheet F3a is suppressed from breaking.

  As shown in FIG.3 (c), after the 1st period passes, the winding part 112 and the nip roll part 113 are separator sheet F3a in the 2nd period until the rolling of the bonding head 120 is complete | finished. Rotate in the winding direction (forward direction). Thereby, the slack of the separator sheet F3a is eliminated, and the separation of the sheet piece F1X from the separator sheet F3a is promoted. The timing of switching the rotation direction of the winding unit 112 and the nip roll unit 113 from the reverse direction to the forward direction is, for example, 5% to 70%, preferably 10% to 50%, when the sheet piece F1X is attached to the holding surface 122a. It is assumed that the timing is completed.

  While unwinding and winding the separator sheet F3a by the winding unit 112 and the nip roll unit 113, the laminating head 120 always continues to roll in the same direction by the rotation driving unit 136 and the head moving device 160. 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 holding it on the holding surface 122a.

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

  FIG. 3 shows the process of holding the non-defective sheet piece F1X having no defects in the sheet surface to the bonding head 120, but holding the defective sheet piece F1X having defects in the sheet surface to the bonding head 120. The same processing is performed when doing so. The bonding head 120 holding the defective sheet piece F <b> 1 </ b> X is transferred by the head driving device 160 to an unillustrated discarding position (discard position) arranged at a position different from the bonding stage 171. Then, the defective sheet piece F1X is overlaid on a waste material sheet or the like provided at the disposal position.

  The disadvantage of the sheet piece F1X is, for example, a portion where a foreign substance consisting of at least one of solid, liquid, and gas is present inside the sheet piece F1X, a portion where irregularities and scratches are present on the surface of the sheet piece F1X, and the sheet piece F1X. This is a portion that becomes a bright spot due to the distortion of the material or the deviation of the material.

  Next, the process of bonding (transferring) the sheet piece F1X bonded to the bonding head 120 to the optical display component P will be described with reference to FIG.

  As shown in FIG. 4A, the bonding head 120 holding the sheet piece F1X is raised to a height that does not interfere with the sheet conveying device 110 by the head lifting device 140 with the adhesive layer F2a facing downward. Then, the bonding head 120 is transferred 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 sheet stage 114 to the bonding stage 171, for example, two corners of the sheet piece F1X held on the holding surface 122a are imaged by the first imaging device 181. The image of the sheet piece F1X captured by the first imaging device 181 is subjected to image analysis by a first image processing device (not shown), and the positions of the two corners of the sheet piece F1X are detected. Information regarding the position of the corner 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.

  For example, the first imaging device 181 images two corners on the rear end side of the sheet piece F1X, but the number and position of the sheet pieces F1X imaged by the first imaging device 181 are not limited thereto. As long as the arrangement position of the sheet piece F1X with respect to the bonding head 120 can be confirmed, the number of sheet pieces F1X to be imaged by the first imaging device 181 can be freely selected in one to four ranges and imaged. The position of the corner can also be set freely.

  The optical display component P held on the bonding stage 171 is imaged by, for example, the second imaging device 182. For example, the second imaging device 182 images using 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 imaged 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 regarding 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 controls the stage driving device 172 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 control device 190 uses the stage driving device 172 to horizontally move the bonding stage 171 in the horizontal plane or to rotationally drive the bonding stage 171 in the horizontal plane. Thereby, the relative bonding position of the optical display component P hold | maintained at the bonding stage 171 and the sheet piece F1X hold | maintained at the bonding head 120 is adjusted.

  As shown in FIG. 4B, when the relative bonding position between the optical display component P and the sheet piece F1X is adjusted, the bonding head 120 is lowered to a height at which the optical display component P comes into contact with the head lifting device 140. To do. The bonding head 120 is inclined so that the end on the upstream side in the rolling direction is positioned below the end on the downstream side in the rolling direction. By lowering the bonding head 120, the end of the bonding head 120 located on the upstream side in the rolling direction from the sheet piece F1X is the upper surface of the contact plate 173 located on the upstream side in the rolling direction of the optical display component P. Pressed against.

  Next, as shown in FIG. 4C, the rotation driving unit 136 and the head moving device 160 are driven in synchronization, so that the bonding head 120 is moved from the upper surface of the backing plate 173 to the upper surface of the optical display component P. Roll toward. Along with the rolling of the bonding head 120, the sheet piece F1X held on the holding surface 122a is gradually attached to the upper surface of the optical display component P.

  The level of the bonding stage 171 is adjusted in advance before the bonding apparatus 100 is operated. The load distribution in the head width direction of the bonding head 120 is also measured in advance using pressure sensitive paper or the like before the bonding apparatus 100 is operated. The supply amount of air supplied to the first cylinder body 131a and the supply amount of air supplied to the second cylinder body 131b are adjusted so that the load distribution in the head width direction is uniform. The 1st load adjustment part 139a and the 2nd load adjustment part 139b press the bonding head 120 toward the optical display component P mounted in the bonding stage 171 with the load adjusted in this way.

  The bonding head 120 has, for example, a weaker adhesive force than the bonding surface (adhesive layer F2a) of the sheet piece F1X, and the surface protection film F4a of the sheet piece F1X can be repeatedly bonded and peeled off. Therefore, the sheet piece F1X whose pressure-sensitive adhesive layer F2a side is pressed by the optical display component P is peeled from the holding surface 122a and bonded to the upper surface of the optical display component P. Thus, the bonding process of the sheet piece F1X to the optical display component P is completed.

  FIG. 4 shows a process of transferring a non-defective sheet piece F1X having no defect in the sheet surface from the bonding head 120 to the optical display component P. However, the defective sheet piece F1X having a defect in the sheet surface is discarded. The same process is performed also when bonding to the waste material sheet etc. which were provided in the position. In this case, since the load distribution in the head width direction may be non-uniform, it is not necessary to adjust the load at both ends in the head width direction.

  As explained above, in the bonding apparatus 100 of the present embodiment, the optical display component P is used at both ends in the head width direction of the bonding head 120 using the first load adjustment unit 139a and the second load adjustment unit 139b. The load applied to the upper sheet piece F1X is adjusted. Therefore, the load is made uniform in the head width direction, and generation of bubbles and uneven bonding due to load non-uniformity is suppressed.

  FIG. 6 is a schematic diagram of an optical display device production system 1000 according to the first embodiment of the present invention. The optical display device is configured by bonding an optical member to the optical display component P. The size of the optical member is set based on the specifications of the optical display device. The production system 1000 includes the above-described bonding device 100 as a bonding device that bonds a sheet piece that is the 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 1st bonding apparatus 1002, the 2nd bonding apparatus 1003, and the 3rd bonding apparatus 1005 have the structure of the bonding apparatus 100 mentioned 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 are a series of conveyance lines that convey the optical display component P. Placed in.

  The cleaning apparatus 1001 cleans the optical display component P carried in from a loader (not shown), and removes foreign matters attached to the optical display component P. The cleaning apparatus 1001 is, for example, a first surface (for example, a surface on the side where the image displayed in the display area is viewed) and a second surface (for example, the side where the image displayed in the display area is viewed). The surface of the optical display component P can be brushed and washed with water on the opposite surface), and then the first surface and the second surface of the optical display component P can be drained. The cleaning device 1001 may be a dry type that performs static electricity removal and dust collection on the front and back surfaces of the optical display component P. The optical display component P is, for example, a liquid crystal panel.

  The first bonding device 1002 bonds the first sheet piece to the first surface of the optical display component P. The 1st bonding apparatus 1002 can adjust a load by the both ends of the head width direction of a bonding head similarly to the bonding apparatus 100 mentioned above. Therefore, the load can be made uniform in the head width direction, and the generation of bubbles and uneven bonding can be suppressed.

  The first sheet piece is, for example, a sheet-like polarizing plate cut to a size corresponding to the outer dimension of the optical display component P. The “size corresponding to the outer dimension of the optical display component P” means a size that does not cause an excessive portion that causes a problem in actual 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.

  For example, a display area for displaying an image is provided in the center of the optical display component P, and a plurality of terminals to which a semiconductor chip, a flexible printed wiring, and the like are connected are provided at the end of the optical display component P. An electrical component mounting portion is provided. In this case, the first sheet piece is, for example, an area that is not less than the size of the display area of the optical display component P and not more than the size of the outer shape (contour shape in plan view) of the optical display component P and is optical. A sheet piece having a size of a region that avoids a functional part such as an electric component mounting portion in the display component P is used.

  The second bonding apparatus 1003 bonds the second sheet piece to the second surface of the optical display component P. The 2nd bonding apparatus 1003 can adjust a load by the both ends of the head width direction of a bonding head similarly to the bonding apparatus 100 mentioned above. Therefore, the load can be made uniform in the head width direction, and the generation of bubbles and uneven bonding can be suppressed.

  The second sheet piece is, for example, a sheet-like polarizing plate cut to a size corresponding to the outer dimension of the optical display component P. The second sheet piece has the same configuration 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 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 apparatus 1002 and the 2nd bonding apparatus 1003, the inversion apparatus (illustration omitted) which reverses the front and back of the optical display component P is provided, for example. The optical display component P in which the first sheet piece is bonded to the first surface is supplied to the second bonding apparatus 1002 with the front and back sides reversed.

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

  The 3rd bonding apparatus 1005 bonds a 3rd sheet piece to the surface of the 2nd sheet piece from which the surface protection film was peeled by the peeling apparatus 1004. The 3rd bonding apparatus 1005 can adjust a load by the both ends of the head width direction of a bonding head similarly to the bonding apparatus 100 mentioned above. Therefore, the load can be made uniform in the head width direction, and the generation of bubbles and uneven bonding can be suppressed.

  The third sheet piece is, for example, a sheet-like brightness enhancement film cut to a size corresponding to the outer dimension of the optical display component P. The brightness enhancement film is a reflective 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 bonded to the second surface of the optical display component P and the transmission axis of the third sheet piece bonded to the second sheet piece are parallel to each other.

  The inspection device 1006 inspects the optical display component P to check whether the positions of the first sheet piece, the second sheet piece, and the third sheet piece are appropriate (whether the positional deviation is within the tolerance range). The optical display component determined to have an inappropriate position of the first sheet piece, the second sheet piece, or the third sheet piece with respect to the optical display component P is discharged out of the system by a not-shown dispensing means.

  The optical display component with the first sheet piece, second sheet piece, and third sheet piece attached is subjected to incidental measures such as defect inspection (foreign matter inspection, etc.) and mounting of electrical components as necessary. Are shipped as an optical display device 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. Yes. Therefore, it is possible to provide an optical display device DP in which the generation of bubbles and uneven bonding is suppressed.

[Second Embodiment]
Hereinafter, the production system of the bonding apparatus and the optical display device according to the second embodiment of the present invention will be described with reference to FIGS.

  FIG. 7 is a diagram illustrating 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 set based on the target size (specification of the optical display device). The size of the sheet piece FXm is bonded to the optical display component P, and then the excess portion of the sheet piece FXm is cut by the cutting device 184. Therefore, below, it demonstrates centering on the cutting process of the sheet piece FXm. In addition, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The cross-sectional structure of the sheet piece FXm is the same as that of the sheet piece F1X shown in FIG. The sheet piece FXm is obtained by cutting the long optical member sheet FX shown in FIG. 1 into a predetermined size. For example, the sheet piece FXm is slightly larger than the size corresponding to the outer dimension of the optical display component P (the size of the first region FB). The “size corresponding to the outer dimension of the optical display component P” means a size that does not cause an excessive portion that causes a problem in actual use when bonded to the optical display component P. Since the sheet piece FXm is larger than the size corresponding to the external dimension of the optical display component P, the surplus portion (second region FS) that causes a problem in actual use is cut by the cutting device 184.

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

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

  For example, the imaging device 183 images the optical display component P from above the optical display component P placed on the cutting stage 185 through the sheet piece FXm. For example, the imaging device 183 captures images 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. For example, the detection device 189 performs image processing on the imaging data to detect the position of the outer peripheral edge of the substrate, and detects the position of the outer peripheral edge as the cut line WCL of the sheet piece FXm.

  Information on 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 on the cut line WCL sent from the detection device 189, and cuts the sheet piece FXm along the cut line WCL. As a result, the first area FB facing the display area of the sheet piece FXm is separated from the second area FS outside the first area FB, and the optical member FO having a target size 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. Therefore, even if there is a size variation for each optical display component P, the optical member FO having a size corresponding to the outer dimension of the optical display component P can be reliably cut out from the sheet piece FXm.

  In this specification, after pasting a sheet piece FXm larger than the optical member FO of a desired size to the optical display component P, the excess portion of the sheet piece FXm is cut based on the imaging data of the optical display component P. This method is called “window cut method”. In this embodiment, the optical member FO having a desired size is bonded to a desired position of the optical display component P by adopting a window cut method. By adopting the window cut method, the following effects can be obtained.

(I) When the optical member is bonded to the optical display component P, the dimensional variation of the optical display component P and the optical member FO, and the bonding variation (position shift) of the optical member FO with respect to the optical display component P, etc. Considering this, the optical member FO 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 display is formed in the periphery of the display area of the optical display component P, and downsizing of the device is hindered. When the window cut method is adopted, the optical display component P after the sheet piece FXm is bonded is imaged, and the sheet piece FXm is cut based on the imaging data. The optical member FO can be reliably arranged.

(Ii) The direction of the optical axis of the sheet piece FXm may deviate 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 can be adjusted based on the measurement result. Although it is preferable, 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 cut method, 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, and thus such adjustment is possible.

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

  First, as shown in FIG. 8A, 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 is detected at each inspection point CP. The timing for detecting the optical axis may be at the time of manufacturing the original fabric roll RX (see FIG. 1), or may be until the optical member sheet FX is unwound from the original fabric 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) in association 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 optical axis data (inspection data of the in-plane distribution of the optical axis) of each inspection point CP from the storage device, and the optical member sheet FX (cut line CL) of the portion from which the sheet piece FXm is cut out. The direction of the average optical axis of the area defined by (1) is detected.

  For example, as shown in FIG. 8B, an angle (deviation angle) formed between 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 ( When the maximum deviation angle) is θmax and the smallest angle (minimum deviation angle) is θmin, the average value θmid (= (θmax + θmin) / 2) of the maximum deviation angle θmax and the minimum deviation angle θmin is defined as the average deviation angle. To detect. Then, the direction that forms the average deviation 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. The shift angle is calculated, for example, with the counterclockwise direction being positive with respect to the edge line EL of the sheet piece FXm and the clockwise direction being negative.

  And the sheet | seat with respect to the optical display component P so that the direction of the average optical axis of the optical member sheet | seat FX detected by said method may make 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 piece FXm is determined. For example, when the direction of the optical axis of the optical member is set to 90 ° with respect to one side of the display region P4 according to the design specifications, the average optical axis direction of the optical member sheet FX is the display region. The sheet piece FXm is bonded to the optical display component P so as to form 90 ° with respect to one side of P4.

  Thereafter, the detection device 189 shown in FIG. 7 detects the cut line WCL of the sheet piece FXm, and the cutting device 184 cuts the sheet piece FXm along the cut line WCL. Thereby, the optical member FO whose direction of the optical axis is precisely controlled is arranged at a desired size and a desired position. Therefore, it is possible to provide a narrow frame optical display device DP having excellent display quality.

  FIG. 9 is a schematic diagram of an optical display device production system 2000 according to the second embodiment of the present invention. The production system 2000 is a production system that employs a window cut method. The production system 2000 includes the bonding apparatus 100 described in the first embodiment as a bonding apparatus that bonds a sheet piece larger than the optical member to the optical display component P.

  The production system 2000 of the present 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, a peeling device 2006, and a first device. A three-bonding device 2007, a third cutting device 2008, and an inspection device 2009 are included. Cleaning device 2001, first bonding device 2002, first cutting device 2003, second bonding device 2004, second cutting device 2005, peeling device 2006, third bonding device 2007, and third The cutting device 2008 and the inspection device 2009 are arranged on a series of transport lines that transport the optical display component P.

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

  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 detection device 189 described above. That is, in the first cutting device 2003, the second cutting device 2005, and the third cutting device 2008, the imaging device picks up an image of the optical display component P on which the sheet piece FXm larger than the optical member having the target size is bonded. Then, a window cut method is employed in which an excess portion of the sheet piece is cut based on the imaging data. Therefore, it is possible to provide a narrow frame optical display device DP having excellent display quality.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but it goes without saying that the present invention is not limited to such examples. Various shapes, combinations, and the like of the constituent members shown in the above-described examples are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention. For example, in the said embodiment, although what has the circular arc-shaped holding surface 122a was used as the bonding head 120, the structure of the bonding head 120 is not restricted to this. The bonding head 120 may have a curved holding surface other than an arc, or may have a cylindrical holding surface.

DESCRIPTION OF SYMBOLS 100 ... Pasting apparatus, 111 ... Unwinding part, 112 ... Winding part, 114 ... Sheet stage, 115 ... Cut part, 120 ... Pasting head, 122a ... Holding surface, 139a ... First load adjustment part, 139b ... First Two load adjusters, 171 ... bonding stage, 173 ... pad, 184 ... cutting device, 189 ... detection device, 1000 ... production system of optical display device, 1002, 1003, 1005 ... bonding device, 2000 ... optical display device Production system, 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 ... Original fabric roll, WCL ... Cut line

Claims (14)

A bonding apparatus for bonding a sheet piece to an optical display component,
A bonding stage on which the optical display component is placed;
While holding the sheet piece on a curved holding surface, the sheet piece held on the holding surface rolls along the curve of the holding surface while pressing the sheet piece against the optical display component placed on the bonding stage. A bonding head for bonding the sheet piece to the optical display component;
In the first end portion in the head width direction orthogonal to the rolling direction of the bonding head, a first load adjustment unit that adjusts the load applied to the sheet piece on the optical display component;
In the second end of the bonding head in the head width direction, a second load adjustment unit that adjusts the load applied to the sheet piece on the optical display component;
Bonding device containing. The first load adjusting unit is a first air cylinder that is connected to the first end of the bonding head and presses the bonding head toward the optical display component placed on the bonding stage. Yes,
The second load adjustment unit is a second air cylinder that is connected to the second end portion of the bonding head and presses the bonding head toward the optical display component placed on the bonding stage. The bonding apparatus according to claim 1. A patch plate is provided adjacent to the optical display component on the bonding stage,
The bonding head is held on the holding surface by continuously rolling the top surface of the backing plate and the top surface of the optical display component after the holding surface is pressed against the top surface of the backing plate. The bonding apparatus according to claim 1 or 2, wherein a sheet piece is bonded to the optical display component. An unwinding unit for unwinding the optical member sheet from the raw roll together with the separator sheet;
Cutting the optical member sheet leaving the separator sheet to form the sheet piece;
A sheet stage that supports the sheet piece from the separator sheet side;
Including
The laminating head peels the sheet piece from the separator sheet by rolling along the curvature of the holding surface while pressing the holding surface against the sheet piece stationary on the sheet stage. The bonding apparatus according to any one of claims 1 to 3. After the sheet piece is peeled from the separator sheet by the pasting head, including a winding unit that winds up the separator sheet that has become independent,
The winding unit rotates in the direction of unwinding the separator sheet in the first period immediately after the bonding head presses the holding surface against the sheet piece and starts rolling, and the first period. The bonding apparatus according to claim 4, wherein after the elapse of time, the second period until the rolling ends is rotated in a direction of winding the separator sheet. An optical display device production system in which an optical member is bonded to an optical display component,
Including a laminating apparatus for laminating a sheet piece that is the optical member to the optical display component;
The said bonding apparatus is a bonding apparatus of any one of Claim 1 thru | or 5. The production system of an optical display device. An optical display device production system in which an optical member is bonded to an optical display component,
A bonding apparatus for bonding a sheet piece larger than the optical member to the optical display component;
The optical display component to which the sheet piece is bonded is imaged, and based on the imaging data, a detection device that detects the cut line of the sheet piece;
A cutting device for cutting out the optical member from the sheet piece by cutting the sheet piece bonded to the optical display component along the cut line;
Including
The said bonding apparatus is a bonding apparatus of any one of Claim 1 thru | or 5. The production system of an optical display device. A bonding method for bonding a sheet piece to an optical display component,
A mounting step of mounting the optical display component on a bonding stage;
While holding the sheet piece on the curved holding surface of the bonding head, along the curve of the holding surface while pressing the sheet piece held on the holding surface against the optical display component placed on the bonding stage. A laminating step of laminating the sheet piece to the optical display component by rolling the laminating head;
In a first end in the head width direction orthogonal to the rolling direction of the bonding head, a first load adjustment step of adjusting a load applied to the sheet piece on the optical display component;
A second load adjusting step for adjusting a load applied to the sheet piece on the optical display component at the second end in the head width direction of the bonding head;
The pasting method containing. In the first load adjustment step, the bonding head is pressed against the optical display component placed on the bonding stage by a first air cylinder connected to the first end of the bonding head. Step,
Said 2nd load adjustment step presses the said bonding head toward the said optical display component mounted in the said bonding stage by the 2nd air cylinder connected to the said 2nd edge part of the said bonding head. It is a step. The pasting method according to claim 8. A patch plate is provided adjacent to the optical display component on the bonding stage,
In the bonding step, after the holding surface of the bonding head is pressed against the upper surface of the backing plate, the bonding head continuously rolls on the upper surface of the backing plate and the upper surface of the optical display component. The bonding method according to claim 8 or 9, wherein the sheet piece held on the holding surface is bonded to the optical display component. An unwinding step of unwinding the optical member sheet together with the separator sheet from the raw roll,
A cutting step of cutting the optical member sheet leaving the separator sheet to form the sheet piece;
A supporting step of supporting the sheet piece from the separator sheet side by a sheet stage;
Including
In the bonding step, the sheeting head rolls along the curvature of the holding surface while the holding surface of the bonding head is pressed against the sheet piece stationary on the sheet stage. The bonding method according to any one of claims 8 to 10, wherein the piece is peeled from the separator sheet and held on the holding surface. After the sheet piece is peeled from the separator sheet by the pasting head, the winding sheet includes a winding step of winding the separator sheet alone by a winding unit,
In the winding step, the first period immediately after the laminating head presses the holding surface against the sheet piece and starts rolling, rotates the winding portion in a direction to unwind the separator sheet, The bonding method according to claim 11, wherein after the first period has elapsed, the winding unit rotates in a direction to wind up the separator sheet during a second period until the rolling is completed. It is a production method of an optical display device formed by bonding an optical member to an optical display component,
Including a bonding step of bonding a sheet piece that is the optical member to the optical display component;
The said bonding step is performed using the bonding method of any one of Claims 8 thru | or 12. The production method of an optical display device. It is a production method of an optical display device formed 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,
Detecting the optical display component on which the sheet piece is bonded, and detecting a cut line of the sheet piece based on the imaging data;
A cutting step of cutting out the optical member from the sheet piece by cutting the sheet piece bonded to the optical display component along the cut line;
Including
The said bonding step is performed using the bonding method of any one of Claims 8 thru | or 12. The production method of an optical display device.

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