JP2014206714A - Manufacturing system and manufacturing method for optical display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing system and manufacturing method for an optical display device, whereby a display area can be enlarged and the apparatus size can be reduced, by decreasing the size of the frame edge part of the periphery of a display area.SOLUTION: A sticking device that sticks an optical member F11 to a liquid crystal panel P comprises: a sticking head 32 configured such that the optical member F11 held by being stuck to an arcuate holding face 32a is stuck to the liquid crystal panel P; a moving device 44 configured to relatively move the sticking head 32 and liquid crystal panel P when the optical member F11 is stuck; and a driving device 42 configured such that when the optical member F11 is stuck, the sticking head 32 pressing the optical member F11 against the liquid crystal panel P is inclined along the curve of the holding face 32a.

Description

  The present invention relates to a production system and production method for an optical display device such as a liquid crystal display.

  Conventionally, in a production system for an optical display device such as a liquid crystal display, an optical member such as a polarizing plate to be bonded to a liquid crystal panel (optical display component) is formed from a long film into a sheet piece having a size matching the display area of the liquid crystal panel. After being cut out, packed and transported to another line, it may be bonded to a liquid crystal panel (see, for example, Patent Document 1).

JP 2003-255132 A

  However, in the conventional configuration described above, a sheet piece slightly larger than the display area is cut out in consideration of variation in dimensions of the liquid crystal panel and the sheet piece, and bonding variation (positional deviation) of the sheet piece to the liquid crystal panel. . Therefore, there is a problem that an extra area (frame part) is formed around the display area, and downsizing of the device is hindered.

  The present invention has been made in view of the above circumstances, and provides an optical display device production system and production method capable of reducing the frame area around the display area to enlarge the display area and downsize the device.

  As a means for solving the above problems, according to the first aspect of the present invention, in an optical display device production system in which an optical member is bonded to an optical display component, a plurality of the optical display components conveyed on a line are used. On the other hand, the optical member sheet was cut to a length corresponding to the display area while the belt-shaped optical member sheet having a width corresponding to the display area of the optical display component was unwound from the original roll, thereby forming the optical member. Then, it is equipped with the bonding apparatus which bonds the said optical member to the said optical display component, and the said bonding apparatus bonds the said optical member bonded and hold | maintained on the circular arc-shaped holding surface to the said optical display component. A head, a moving device for relatively moving the bonding head and the optical display component at the time of bonding the optical member, and the optical member to be pressed against the optical display component at the time of bonding the optical member Production system of the optical display device having a drive unit, the driving of the focus head so as to tilt along the curvature of the holding surface is provided.

Said 1st aspect WHEREIN: It further has a control apparatus which controls the said moving apparatus and the said drive apparatus, The said control apparatus is the said holding surface of the said bonding head tilted at the time of the said bonding to the said optical display component. The structure which controls the said drive device and the said moving device so that a torque may be produced along the drawing | feeding-out direction of the said optical member may be sufficient.
Moreover, the said 1st aspect WHEREIN: The structure which aligns the relative position of the said optical member with respect to the said bonding head to a predetermined reference position may be sufficient.

Moreover, the said 1st aspect WHEREIN: The said bonding apparatus cuts the said optical member sheet | seat with the separator sheet which unwinds the said optical member sheet | seat with the separator sheet, and cuts the said optical member sheet | seat leaving the said separator sheet, and said optical The structure which further has the cut part used as a member, and the peeling part which peels the said optical member from the said separator sheet may be sufficient.
At this time, even if the said moving apparatus is the structure which moves the said bonding head between the peeling position from the said separator sheet of the said optical member, and the bonding position to the said optical display component of the said optical member. Good.
Furthermore, the said peeling part peels the said optical member from the said separator sheet | seat with the bonding surface with the said optical display component facing down, and the said moving apparatus has the said bonding head the upper surface on the opposite side to the said bonding surface. The structure which moves between the said peeling position and the said bonding position may be sufficient in the state which stuck and hold | maintained to the said holding surface, and was making the said bonding surface downward.

  Further, according to the second aspect of the present invention, there is provided an optical display device production system in which an optical member is bonded to an optical display component, and one of a long side and a short side of a display region of the optical display component. While the belt-shaped optical member sheet having a width wider than the length of one side is unwound from the original roll, the optical member sheet is made longer than the length of one of the long side and the short side of the display region. After making a sheet piece by cutting with a long length, a bonding device for bonding the sheet piece to the optical display component, and a portion of the portion facing the display area from the sheet piece bonded to the optical display component A cutting device that cuts off an excess portion arranged on the outside and forms the optical member having a size corresponding to the display area, and the bonding device is attached to and held on an arc-shaped holding surface. Optical display of sheet piece A bonding head for bonding to a product, a moving device for relatively moving the bonding head and the optical display component at the time of bonding of the sheet piece, and an optical display of the sheet piece at the time of bonding of the sheet piece. There is provided a production system of an optical display device having a drive device that drives the bonding head that presses against a component to tilt along the curvature of the holding surface.

  Moreover, in the said 2nd aspect, it further has a control apparatus which controls the said moving apparatus and the said drive apparatus, and the said control apparatus is the said optical display component from the said holding surface of the said bonding head tilted at the time of the said bonding. The structure which controls the said drive device and the said moving apparatus so that a torque may be produced along the drawing | feeding-out direction of the said optical member to a may be sufficient.

  Moreover, the said 2nd aspect WHEREIN: The said bonding apparatus cuts the said optical member sheet | seat with the separator sheet which unwinds the said optical member sheet | seat with the separator sheet, and cuts the said optical member sheet | seat leaving the said separator sheet, and said optical The structure which further has the cut part used as a member, and the peeling part which peels the said optical member from the said separator sheet may be sufficient.

  Moreover, according to the third aspect of the present invention, in the method for producing an optical display device in which an optical member is bonded to an optical display component, the optical display is applied to a plurality of the optical display components conveyed on a line. After the belt-shaped optical member sheet having a width corresponding to the display area of the part is unwound from the original roll, the optical member sheet is cut to a length corresponding to the display area to obtain the optical member, and then the optical member A bonding step of bonding the optical member to the optical display component, and the bonding step holds the optical member on an arc-shaped holding surface of the bonding head, and holds the optical member on the holding surface. And a step of moving the bonding head and the optical display component relative to each other, and tilting the bonding head that presses the optical member against the optical display component along the curvature of the holding surface. The method of producing an optical display device having a driving step, the driving is provided as.

  In the third aspect, in the driving step and the moving step, the optical head is pressed against the optical display component, and the bonding head and the optical display component are moved relative to each other, so A configuration in which torque is generated along a feeding direction of the optical member from the holding surface to the optical display component may be employed.

  Further, according to the fourth aspect of the present invention, in the method for producing an optical display device in which an optical member is bonded to the optical display component, either one of the long side and the short side of the display region of the optical display component While the belt-shaped optical member sheet having a width wider than the length of the side is unwound from the original roll, the optical member sheet is longer than the length of one of the long side and the short side of the display region. After cutting into a sheet piece, a bonding step of bonding the sheet piece to the optical display component, and outside the portion facing the display area from the sheet piece bonded to the optical display component A cutting step of cutting the arranged surplus portion and forming the optical member having a size corresponding to the display area, and the bonding step holds the sheet piece on an arc-shaped holding surface. Hold step and before A moving step for relatively moving the bonding head holding the sheet piece on the holding surface and the optical display component, and tilting the bonding head for pressing the sheet piece against the optical display component along the curvature of the holding surface And a driving step for driving the optical display device.

  Moreover, in the said 4th aspect, in the said drive step and the said movement step, while pressing the said sheet piece to the said optical display component, by relatively moving the said bonding head and the said optical display component, the said at the time of bonding A configuration may be adopted in which torque is generated along a feeding direction of the sheet piece from the holding surface to the optical display component.

According to the fifth aspect of the present invention, there is provided an optical display device production system in which an optical member is bonded to an optical display component, and any one of a long side and a short side of a display region of the optical display component. While the belt-shaped optical member sheet having a width wider than the length of one side is unwound from the original roll, the optical member sheet is made longer than the length of one of the long side and the short side of the display region. After cutting into a long piece to make a sheet piece, a bonding apparatus for bonding the sheet piece to the optical display component, and a bonding surface of the optical display component and the sheet piece on which the sheet piece is bonded The detection device for detecting the outer peripheral edge of the sheet, and the excess portion disposed outside the portion corresponding to the bonding surface from the sheet piece bonded to the optical display component, the size corresponding to the bonding surface Cutting device for forming the optical member And the laminating apparatus, the laminating head for laminating the sheet piece adhered and held on the arc-shaped holding surface to the optical display component, and the laminating at the time of laminating the sheet piece A moving device that relatively moves the head and the optical display component, and the bonding head that presses the sheet piece against the optical display component when the sheet piece is bonded is tilted along the curvature of the holding surface. An optical display that cuts the sheet piece along an outer peripheral edge of the bonding surface between the optical display component and the sheet piece detected by the detection device. A device production system is provided.
In addition, the “bonding surface between the optical display component and the sheet piece” in the above configuration refers to a surface facing the sheet piece of the optical display component, and “the outer peripheral edge of the bonding surface” specifically refers to In the optical display component, the outer peripheral edge of the substrate on which the sheet piece is bonded is indicated.
Further, the “part corresponding to the bonding surface” of the sheet piece means that the outer shape of the optical display component (contour shape in plan view) is not less than the size of the display area of the optical display component facing the sheet piece. Is a region that is smaller than the size of the optical display component and avoids a functional portion such as an electrical component mounting portion in the optical display component. Similarly, the “size corresponding to the bonding surface” refers to a size 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.

  Moreover, the said 5th aspect WHEREIN: It has further the control apparatus which controls the said moving apparatus and the said drive apparatus, and the said control apparatus is the said optical display component from the said holding surface of the said bonding head tilted at the time of the said bonding. The driving device and the moving device may be controlled so as to generate a torque along the feeding direction of the sheet piece.

  Moreover, the said bonding apparatus WHEREIN: The said bonding apparatus cuts the said optical member sheet with the separator sheet which unwinds the said optical member sheet with a separator sheet, and cuts the said optical member sheet leaving the said separator sheet, and the said sheet | seat The structure which further has the cut part made into a piece, and the peeling part which peels the said sheet piece from the said separator sheet may be sufficient.

  According to the sixth aspect of the present invention, in the method for producing an optical display device in which an optical member is bonded to the optical display component, either one of the long side and the short side of the display region of the optical display component While the belt-shaped optical member sheet having a width wider than the length of the side is unwound from the original roll, the optical member sheet is longer than the length of one of the long side and the short side of the display region. After cutting into a sheet piece, the bonding step of bonding the sheet piece to the optical display component, and the outside of the bonding surface of the optical display component to which the sheet piece is bonded and the sheet piece A detection step for detecting a peripheral edge, and cutting off an excess portion disposed outside the portion corresponding to the bonding surface from the sheet piece bonded to the optical display component, and having a size corresponding to the bonding surface. A cutting step for forming the optical member; Including a holding step of holding and holding the sheet piece on an arc-shaped holding surface, and a movement of relatively moving the bonding head holding the sheet piece on the holding surface and the optical display component. And a driving step for driving the bonding head that presses the sheet piece against the optical display component so as to tilt along the curvature of the holding surface, and in the cutting step, the detection step A method for producing an optical display device is provided that cuts the sheet piece along an outer peripheral edge of the bonding surface between the detected optical display component and the sheet piece.

  Moreover, in the sixth aspect, in the driving step and the moving step, while the sheet piece is pressed against the optical display component, the bonding head and the optical display component are moved relative to each other at the time of bonding. A configuration may be adopted in which torque is generated along a feeding direction of the sheet piece from the holding surface to the optical display component.

ADVANTAGE OF THE INVENTION According to this invention, the dimensional variation and bonding variation of an optical member can be suppressed, the frame part around a display area can be reduced, and an enlargement of a display area and size reduction of an apparatus can be achieved.
In addition, since the moving device and the driving device are independently driven, the optical member or the sheet piece can be bonded while applying a desired torque. Therefore, by appropriately adjusting the torque, it is possible to suppress the amount of warpage generated in the optical display member after the optical member or the sheet piece is bonded.
Moreover, the continuous bonding of the optical member is facilitated, and the production efficiency of the optical display device can be increased.
Further, the optical member or the sheet piece can be smoothly held by the tilt of the arc-shaped holding surface, and the optical member or the sheet piece can be securely bonded to the optical display component by the tilt of the arc-shaped holding surface.

It is a schematic block diagram of the film bonding system which concerns on 1st embodiment. It is a plane lineblock diagram of the film pasting system concerning a first embodiment. It is AA sectional drawing of FIG. It is sectional drawing of the optical member sheet | seat of this embodiment. It is a top view of the said film bonding system. It is a side schematic diagram of the 1st pasting device. It is a figure for demonstrating the bonding operation | movement by a 1st bonding apparatus. It is a schematic block diagram of the film bonding system in 2nd embodiment. It is a plane block diagram of the film bonding system which concerns on 2nd embodiment. It is a figure which shows an example of the determination method of the bonding position of the optical member sheet | seat with respect to a liquid crystal panel. (A)-(c) is explanatory drawing of 3 patterns which cause a liquid crystal panel to warp. (A)-(c) is explanatory drawing of 3 patterns which produce a reverse curvature in a liquid crystal panel. It is a top view which shows the detection process of the edge of a bonding surface. It is a schematic diagram of a detection apparatus. It is a schematic diagram which shows the modification of a detection apparatus.

  Embodiments of the present invention will be described below with reference to the drawings. This embodiment demonstrates the film bonding system which comprises the one part as a production system of an optical display device.

  Drawing 1 is a schematic structure figure of film pasting system 1 of this embodiment. The film laminating system 1 is for laminating a film-shaped optical member such as a polarizing film, a retardation film, or a brightness enhancement film on a panel-shaped optical display component such as a liquid crystal panel or an organic EL panel. And an optical display device including an optical member. In the film bonding system 1, the liquid crystal panel P is used as the optical display component. In FIG. 1, for convenience of illustration, the film bonding system 1 is illustrated in two upper and lower stages.

  FIG. 2 is a plan view of the liquid crystal panel P viewed from the thickness direction of the liquid crystal layer P3. The liquid crystal panel P includes a first substrate P1 that has a rectangular shape in plan view, a second substrate P2 that has a relatively small rectangular shape disposed to face the first substrate P1, a first substrate P1, and a second substrate. And a liquid crystal layer P3 sealed between the substrate P2. The liquid crystal panel P has a rectangular shape that conforms to the outer shape of the first substrate P1 in plan view, and a region that fits inside the outer periphery of the liquid crystal layer P3 in plan view is defined as a display region P4.

  3 is a cross-sectional view taken along the line AA in FIG. The front and back surfaces of the liquid crystal panel P are cut out from the first, second, and third optical member sheets F1, F2, and F3 (refer to FIG. 1; hereinafter, sometimes collectively referred to as the optical member sheet FX) having a long strip shape. The first, second, and third optical members F11, F12, and F13 (hereinafter may be collectively referred to as the optical member F1X) are appropriately bonded. In the present embodiment, the first optical member F11 and the third optical member F13 as polarizing films are bonded to both the backlight side and the display surface side of the liquid crystal panel P, respectively. On the surface, a second optical member F12 as a brightness enhancement film is further bonded to the first optical member F11.

  FIG. 4 is a partial cross-sectional view of the optical member sheet FX bonded to the liquid crystal panel P. The optical member sheet FX includes a film-shaped optical member main body F1a, an adhesive layer F2a provided on one surface (the upper surface in FIG. 4) of the optical member main body F1a, and one of the optical member main bodies F1a via the adhesive layer F2a. The separator sheet F3a is detachably stacked on the surface, and the surface protection film F4a is stacked on the other surface (the lower surface in FIG. 4) of the optical member body F1a. The optical member main body F1a functions as a polarizing plate, and is bonded over the entire display area P4 of the liquid crystal panel P and its peripheral area. For convenience of illustration, hatching of each layer in FIG. 4 is omitted.

  The optical member body F1a is bonded to the liquid crystal panel 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.

  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 liquid crystal panel P together with the optical member body F1a. The surface protective film F4a is disposed on the side opposite to the liquid crystal panel P with respect to the optical member body F1a to protect the optical member body F1a. The surface protective film F4a is separated from the optical member main body F1a at a predetermined timing. The optical member sheet FX may be configured not to include the surface protective film F4a, or the surface protective film F4a may not 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.

  FIG. 5 is a plan view (top view) of the film bonding system 1, and the film bonding system 1 will be described below with reference to FIGS. In the figure, an arrow F indicates the transport direction of the liquid crystal panel P. In the following description, the upstream side of the liquid crystal panel P in the transport direction is referred to as the panel transport upstream side, and the downstream side of the liquid crystal panel P in the transport direction is referred to as the panel transport downstream side.

  The film bonding system 1 sets the predetermined position of the main conveyor 5 as the start point 5a and the end point 5b of the bonding process. The film laminating system 1 conveys the liquid crystal panel P from the starting point 5a to the first and second sub-conveyors 6 and 7 extending in the direction perpendicular to the main conveyor 5 and from the starting point 5a to the first starting position 6a of the first sub-conveyor 6. The first transport device 8, the cleaning device 9 provided on the first sub-conveyor 6, the first rotary index 11 provided on the panel transport downstream side of the first sub-conveyor 6, and the first of the first sub-conveyor 6. A second transport device 12 that transports the liquid crystal panel P from the end position 6 b to the first rotary first position 11 a of the first rotary index 11, and a first bonding device 13 and a second paste that are provided around the first rotary index 11. And a film peeling device 14.

  Moreover, the film bonding system 1 includes a second rotary index 16 provided on the panel transport downstream side of the first rotary index 11 and a second rotary index 16 from the first rotary terminal position 11 b of the first rotary index 11. A third transport device 17 that transports the liquid crystal panel P to the rotary starting position 16a, a third bonding device 18 and an inspection device 19 provided around the second rotary index 16, and a panel transport downstream side of the second rotary index 16 A second conveyor 7 provided on the second rotary conveyor 16, a fourth conveyor device 21 for conveying the liquid crystal panel P from the second rotary end position 16b of the second rotary index 16 to the second starting position 7a of the second sub conveyor 7, The liquid crystal panel P is moved from the second terminal position 7b of the sub-conveyor 7 to the end point 5b of the main conveyor 5. And a fifth feeder 22 for feeding.

The film laminating system 1 performs a predetermined process sequentially on the liquid crystal panel P while transporting the liquid crystal panel P using the lines formed by the drive-type main conveyor 5, the sub-conveyors 6 and 7, and the rotary indexes 11 and 16. Apply. The liquid crystal panel P is conveyed on the line with its front and back surfaces being horizontal.
The liquid crystal panel P is conveyed, for example, in the main conveyor 5 with the short side of the display area P4 along the conveying direction, and in each of the sub conveyors 6 and 7 orthogonal to the main conveyor 5, the long side of the display area P4 is conveyed in the conveying direction. In each rotary index 11, 16, the long side of the display area P 4 is conveyed in a direction along the radial direction of each rotary index 11, 16. Reference numeral 5c in the figure indicates a rack that flows on the main conveyor 5 in correspondence with the liquid crystal panel P.

  A sheet piece (corresponding to the optical member F1X) of the bonding sheet F5 cut out to a predetermined length from the belt-shaped optical member sheet FX is bonded to the front and back surfaces of the liquid crystal panel P. Each part of the film bonding system 1 is comprehensively controlled by a control device 25 as an electronic control device.

The first transport device 8 holds the liquid crystal panel P and transports it freely in the vertical and horizontal directions.
The first transport device 8 transports, for example, the liquid crystal panel P held by suction to the first starting position 6a (the left end in FIG. 5) of the first sub-conveyor 6 in a horizontal state, and cancels the suction at the position. Then, the liquid crystal panel P is delivered to the first sub-conveyor 6.

The cleaning device 9 is, for example, a water-washing type that performs brushing and rinsing of the front and back surfaces of the liquid crystal panel P and then drains the front and back surfaces of the liquid crystal panel P. Note that the cleaning device 9 may be a dry type that performs static electricity removal and dust collection on the front and back surfaces of the liquid crystal panel P.
The second transport device 12 holds the liquid crystal panel P and transports it freely in the vertical and horizontal directions. For example, the second transport device 12 transports the liquid crystal panel P held by suction to the first rotary starting position 11a of the first rotary index 11 in a horizontal state, releases the suction at the position, and moves the liquid crystal panel P to the first position. Transfer to one rotary index 11.

  The first rotary index 11 is a disk-shaped rotary table having a rotation axis along the vertical direction, and rotates clockwise with the left end portion in plan view of FIG. 5 as the first rotary starting position 11a. The 1st rotary index 11 makes the position (upper end part of FIG. 5) rotated 90 degrees clockwise from the 1st rotary first departure position 11a the 1st bonding carrying in / out position 11c.

  In this 1st bonding carrying in / out position 11c, liquid crystal panel P is carried in into the 1st bonding apparatus 13 with the conveyance robot not shown. The liquid crystal panel P is bonded to the first optical member F11 on the backlight side by the first bonding device 13. The liquid crystal panel P to which the first optical member F11 is bonded is carried into the first bonding carry-in / out position 11c of the first rotary index 11 from the first bonding device 13 by a transport robot (not shown).

The 1st rotary index 11 makes the film peeling position 11e the position rotated 45 degrees clockwise from the 1st bonding carrying in / out position 11c (upper right end part of FIG. 5). At the film peeling position 11e, the film peeling device 14 peels the surface protective film F4a of the first optical member F11.
The 1st rotary index 11 makes the position (right end position of FIG. 5) rotated 45 degrees clockwise from the film peeling position 11e the 2nd bonding carrying in / out position 11d.

  At this second bonding carry-in / out position 11d, the liquid crystal panel P is carried into the second bonding apparatus 15 by a transport robot (not shown). In the liquid crystal panel P, the second optical member F <b> 12 on the backlight side is bonded by the second bonding device 15. The liquid crystal panel P on which the second optical member F12 is bonded is carried into the second bonding carry-in / out position 11d of the first rotary index 11 from the second bonding device 15 by a transport robot (not shown).

The 1st rotary index 11 makes the position (lower end part of FIG. 5) rotated 90 degrees clockwise from the 2nd bonding carrying in / out position 11d the 1st rotary terminal position 11b. Carrying out by the 3rd conveying apparatus 17 is made | formed at this 1st rotary terminal position 11b.
The third transport device 17 holds the liquid crystal panel P and transports it freely in the vertical and horizontal directions. The third transport device 17 transports, for example, the liquid crystal panel P held by suction to the second rotary starting position 16a of the second rotary index 16, and reverses the front and back of the liquid crystal panel P during this transport, so that the second rotary starting position The suction is released at 16 a and the liquid crystal panel P is transferred to the second rotary index 16.

  The second rotary index 16 is a disk-shaped rotary table having a rotation axis along the vertical direction, and rotates clockwise with the upper end portion in plan view of FIG. 5 as the second rotary starting position 16a. The 2nd rotary index 16 makes the position (right end part of FIG. 5) rotated 90 degrees clockwise from the 2nd rotary first departure position 16a the 3rd bonding carrying in / out position 16c.

  At the third bonding carry-in / out position 16c, the liquid crystal panel P is carried into the third bonding apparatus 18 by a transport robot (not shown). The liquid crystal panel P is bonded to the third optical member F13 on the display surface side by the third bonding device 18. The liquid crystal panel P on which the third optical member F13 is bonded is carried into the third bonding carry-in / out position 16c of the second rotary index 16 from the third bonding device 18 by a transport robot (not shown).

The 2nd rotary index 16 makes the position (lower end part of FIG. 5) rotated 90 degrees clockwise from the 3rd bonding carrying in / out position 16c the bonding inspection position 16d. Inspection at the bonding inspection position 16d by the inspection device 19 of the workpiece (liquid crystal panel P) on which the film is bonded (whether the position of the optical member F1X is appropriate (whether the positional deviation is within the tolerance range) ) Etc.) is made.
The work determined that the position of the optical member F1X with respect to the liquid crystal panel P is not appropriate is discharged out of the system by a not-shown discharging means.

  The 2nd rotary index 16 makes the position (left end part of Drawing 5) rotated 90 degrees clockwise from pasting inspection position 16d the 2nd rotary termination position 16b. Carrying out by the 4th conveying apparatus 21 is made | formed by this 2nd rotary terminal position 16b.

  The fourth transport device 21 holds the liquid crystal panel P and transports it freely in the vertical direction and the horizontal direction. For example, the fourth transport device 21 transports the liquid crystal panel P held by suction to the second starting position 7a of the second sub-conveyor 7, releases the suction at the second starting position 7a, and moves the liquid crystal panel P to the second sub-conveying position 7a. Delivered to the conveyor 7.

  The fifth transport device 22 holds the liquid crystal panel P and transports it freely in the vertical and horizontal directions. For example, the fifth transport device 22 transports the liquid crystal panel P held by suction to the end point 5b of the main conveyor 5, releases the suction at the end point 5b, and delivers the liquid crystal panel P to the main conveyor 5. With the above, the bonding process by the film bonding system 1 is completed.

Hereinafter, the detail of the 1st bonding apparatus 13 is demonstrated with reference to FIG. FIG. 6 is a schematic side view of the first bonding apparatus 13. In addition, the 2nd bonding apparatus 15 and the 3rd bonding apparatus 18 abbreviate | omit the detailed description as what has the same structure.
The 1st bonding apparatus 13 bonds the sheet piece (1st optical member F11) of the bonding sheet | seat F5 cut into the predetermined size in the 1st optical member sheet | seat F1 with respect to the upper surface of liquid crystal panel P. FIG.

  As shown in FIG. 6, the 1st bonding apparatus 13 unwinds the 1st optical member sheet | seat F1 in the longitudinal direction, unwinding the 1st optical member sheet | seat F1 from the raw fabric roll R1 in which the 1st optical member sheet | seat F1 was wound. The sheet conveying device 31 that conveys the sheet along the direction, and the sheet conveying device 31 holds the sheet piece (first optical member F11) of the bonding sheet F5 cut out from the first optical member sheet F1, and this sheet piece is a liquid crystal panel. And a bonding section 40 that is bonded to the upper surface of P.

  The sheet conveying device 31 conveys the bonding sheet F5 using the separator sheet F3a as a carrier, holds the raw fabric roll R1 around which the belt-shaped first optical member sheet F1 is wound, and the first optical member sheet F1. The unwinding portion 31a that is fed out along the longitudinal direction, the cutting device 31b that performs a half cut on the first optical member sheet F1 that is unwound from the raw roll R1, and the first optical member sheet F1 that has been subjected to the half cut at an acute angle. It has the knife edge 31c which winds and separates the bonding sheet | seat F5 from the separator sheet F3a, and the winding part 31d holding the separator roll R2 which winds up the separator sheet F3a which became independent through the knife edge 31c.

  In addition, although illustration is abbreviate | omitted, the sheet conveying apparatus 31 has a some guide roller which winds the 1st optical member sheet | seat F1 along a predetermined conveyance path | route. The first optical member sheet F1 is equivalent to the width of the display area P4 of the liquid crystal panel P (corresponding to the short side length of the display area P4 in this embodiment) in the horizontal direction (sheet width direction) orthogonal to the conveying direction. Have a width of

  The unwinding unit 31a positioned at the starting point of the sheet conveying device 31 and the winding unit 31d positioned at the ending point of the sheet conveying device 31 are driven in synchronization with each other, for example. Thereby, the winding-up part 31d winds up the separator sheet F3a which passed through the knife edge 31c, while the unwinding part 31a delivers the 1st optical member sheet | seat F1 to the conveyance direction. Hereinafter, the upstream side in the transport direction of the first optical member sheet F1 (separator sheet F3a) in the sheet transport apparatus 31 is referred to as the upstream side of the sheet transport, and the downstream side in the transport direction is referred to as the downstream side of the sheet transport.

  The cutting device 31b has a length equal to the length of the display area P4 (corresponding to the long side length of the display area P4 in this embodiment) in the length direction in which the first optical member sheet F1 is orthogonal to the sheet width direction. Each time it is fed out, a part in the thickness direction of the first optical member sheet F1 is cut across the entire width along the sheet width direction (half cutting is performed).

  The cutting device 31b performs cutting so that the first optical member sheet F1 (separator sheet F3a) is not broken by the tension acting during the conveyance of the first optical member sheet F1 (so that a predetermined thickness remains on the separator sheet F3a). The advancing / retreating position of the blade is adjusted, and the half cut is performed to the vicinity of the interface between the adhesive layer F2a and the separator sheet F3a. In addition, you may use the laser apparatus replaced with a cutting blade.

  The first optical member sheet F1 after the half cut is cut along the entire width in the sheet width direction of the first optical member sheet F1 by cutting the optical member body F1a and the surface protection film F4a in the thickness direction. Is formed. The first optical member sheet F1 is divided into sections having a length corresponding to the long side length of the display region P4 in the longitudinal direction by the cut line. Each section is one sheet piece (first optical member F11) in the bonding sheet F5.

  The knife edge 31c is located below the first optical member sheet F1 conveyed substantially horizontally from the left side to the right side in FIG. 6, and extends at least over the entire width in the sheet width direction of the first optical member sheet F1. The knife edge 31c is wound so as to be in sliding contact with the separator sheet F3a side of the first optical member sheet F1 after the half cut.

  The knife edge 31c wraps the first optical member sheet F1 at an acute angle at its acute-angled tip. The first optical member sheet F1 peels the separator sheet F3a from the bonding sheet F5 when it is folded at an acute angle at the tip of the knife edge 31c. At this time, the adhesion layer F2a (bonding surface with the liquid crystal panel P) of the bonding sheet F5 faces downward. Immediately above the tip of the knife edge 31c is a separator peeling position 31e, and an arc-shaped holding surface 32a of a bonding head 32 described later is in contact with the tip of the knife edge 31c from above, so that the sheet piece of the bonding sheet F5 The surface protective film F4a (surface opposite to the bonding surface) is bonded to the holding surface 32a of the bonding head 32.

  The bonding unit 40 includes a bonding stage 41 that holds the liquid crystal panel P at the time of bonding, a bonding head 32 that has an arc-shaped holding surface 32a that is parallel to the sheet width direction and protrudes downward, and a bonding head. The drive device 42 which rotationally drives 32, and the moving device 44 which moves the bonding head 32 via this drive device 42 are provided. The driving device 42 and the moving device 44 are electrically connected to the control device 25. The control device 25 can independently control the driving of the driving device 42 and the moving device 44.

The bonding stage 41 is for holding the liquid crystal panel P to which the bonding sheet F5 is bonded. The bonding stage 41 holds the liquid crystal panel P by, for example, adsorption.
The bonding head 32 has an arc-shaped holding surface 32a that is parallel to the sheet width direction and protrudes downward. The holding surface 32a has, for example, a weaker bonding force than the bonding surface (adhesive layer F2a) of the bonding sheet F5, and the surface protective film F4a of the bonding sheet F5 can be repeatedly bonded and peeled off.

  The driving device 42 rotates the laminating head 32 so as to tilt along the curvature of the holding surface 32a in parallel with the length direction so as to be centered on the axis along the sheet width direction above the knife edge 31c. Drive. Moreover, the drive device 42 can raise and lower the bonding head 32 by a predetermined amount. Tilt of the bonding head 32 by the drive device 42 is performed when the bonding sheet F5 is bonded and held, and when the bonded sheet F5 bonded and held is bonded to the liquid crystal panel P as described later.

  The moving device 44 includes a guide rail 44a provided above between the bonding stage 41 and the sheet conveying device 31, a power unit 44b such as an actuator, and an arm unit 43 movable along the guide rail 44a by the power unit 44b. And having. The bonding head 32 is attached to the tip of the arm portion 43 via a drive device 42. In addition, although illustration is abbreviate | omitted, as for the moving apparatus 44, the guide rail 44a is extended along the paper surface penetration direction (width direction of the bonding sheet | seat F5), and the arm part 43 is a paper surface penetration direction (bonding sheet | seat F5). (Width direction) may be configured to move along the width direction.

  The moving device 44 moves the bonding head 32 between the sheet conveying device 31 and the bonding stage 41 by moving the arm portion 43 along the guide rail 44a. That is, the moving device 44 is configured such that the bonding head 32 is relatively between the peeling position of the separator sheet F3a of the bonding sheet F5 and the bonding position (bonding stage 41) of the bonding sheet F5 to the liquid crystal panel P. Can be moved to.

  In addition, in this embodiment, although the drive device 42 had the function to raise / lower the bonding head 32, the moving apparatus 44 (arm part 43) may have the function to raise / lower the bonding head 32. FIG. .

  The moving apparatus 44 moves the arm part 43 (bonding head 32) to the front-end | tip part of the knife edge 31c which is a peeling position of the separator sheet F3a. At this time, the drive device 42 is rotated to a state where the bonding head 32 is inclined so that the holding surface 32a faces downward and the curved one end side (right side in FIG. 6) of the holding surface 32a is on the lower side.

  The drive device 42 moves the inclined bonding head 32 from above the separator peeling position 31e, thereby pressing the curved one end side of the holding surface 32a against the tip of the knife edge 31c from above, and the separator peeling position 31e. The front-end | tip part of the bonding sheet | seat F5 in is stuck on the holding surface 32a.

In this embodiment, the 1st detection camera 34 which detects the sheet | seat conveyance downstream end of the sheet piece of the bonding sheet | seat F5 in the said site | part is provided below the front-end | tip part of the knife edge 31c.
Detection information of the first detection camera 34 is sent to the control device 25. For example, when the first detection camera 34 detects the downstream end of the bonding sheet F5, the control device 25 temporarily stops the sheet conveying device 31.

  When the first detection camera 34 detects the downstream end of the bonding sheet F5 and temporarily stops the sheet conveying device 31, the control device 25 performs the cutting of the bonding sheet F5 by the cutting device 31b. That is, the distance along the sheet conveyance path between the detection position by the first detection camera 34 (the optical axis extension position of the first detection camera 34) and the cutting position by the cutting device 31b (the cutting blade advance / retreat position of the cutting device 31b) is This corresponds to the length of the sheet piece of the bonding sheet F5.

  The cutting device 31b is movable along the sheet conveyance path, and this movement changes the distance along the sheet conveyance path between the detection position by the first detection camera 34 and the cutting position by the cutting device 31b. The movement of the cutting device 31b is controlled by the control device 25. For example, after the cutting sheet 31 is cut by the cutting device 31b for one sheet piece of the bonding sheet F5, the cutting end is a predetermined reference. In the case of deviation from the position, this deviation is corrected by the movement of the cutting device 31b. In addition, you may respond | correspond to the cutting of the bonding sheet | seat F5 from which length differs by the movement of the cutting device 31b.

  The 1st detection camera 34 also detects the fault mark marked on the bonding sheet | seat F5. The defect mark is marked by an inkjet or the like from the surface protective film F4a side at the defect point found on the first optical member sheet F1 when the raw roll R1 is manufactured.

  Here, the defects of the optical member sheet FX include, for example, a portion where a foreign substance consisting of at least one of solid, liquid, and gas exists in the optical member sheet FX, and unevenness and scratches on the surface of the optical member sheet FX. Or a portion that becomes a bright spot due to distortion of the optical member sheet FX, material deviation, or the like.

  The control device 25 lowers the bonding head 32 by the driving device 42 and sticks the leading end portion of the bonding sheet F5 to the holding surface 32a, and then cuts the engagement between the driving device 42 and the bonding head 32. To do. Thereby, the bonding head 32 can be tilted freely. In this state, the sheet conveying device 31 performs a feeding operation of the bonding sheet F5.

  At this time, since the bonding head 32 can be tilted by cutting the engagement with the driving device 42, the bonding head 32 is passively tilted with the feeding of the bonding sheet F5. Thus, the whole sheet piece of the bonding sheet F5 is bonded to the holding surface 32a by tilting the bonding head 32 while feeding the bonding sheet F5. When the bonding head 32 tilts until the entire bonding sheet F5 is bonded to the holding surface 32a, the tilting is locked by engaging with the driving device 42 in this inclined posture, for example. In this state, the driving device 42 raises the bonding head 32 above the separator peeling position 31e. Then, the moving apparatus 44 moves the arm part 43 (bonding head 32) on the bonding stage 41, and bonds the bonding sheet F5 with the bonding head 32 bonded to the liquid crystal panel P as described later. Combine.

  In addition, after sticking to the bonding head 32, the bonding sheet | seat F5 by which the fault mark was detected as mentioned above is not bonded to liquid crystal panel P, but the discarding position (discard position) which avoided the bonding stage 41. Move and paste on waste material sheet. Or the process of cutting and sticking the bonding sheet | seat F5 with the minimum width | variety may be sufficient when a defect mark is detected.

  In this embodiment, when the bonding head 32 to which the bonding sheet F5 is bonded moves from the separator peeling position 31e to the bonding stage 41, for example, the bonding sheet F5 bonded and held on the holding surface 32a. Both corners of the base end with respect to the tip are imaged by the pair of second detection cameras 35, respectively. Detection information of each second detection camera 35 is sent to the control device 25. The control device 25 is based on the imaging data of each second detection camera 35, for example, the horizontal direction of the bonding sheet F5 with respect to the bonding head 32 (the moving direction of the bonding head 32 and its orthogonal direction and the rotation direction about the vertical axis). Check the position of. When the relative position of the bonding head 32 and the bonding sheet F5 is misaligned, the control device 25 performs alignment so that the position of the bonding sheet F5 with respect to the bonding head 32 is set to a predetermined reference position by the driving device 42.

  The control device 25 moves the bonding head 32 to a predetermined position above the bonding stage 41. For example, the moving device 44 is arranged so that the positions of the front end portion of the bonding sheet F5 bonded to the holding surface 32a and the end portion of the liquid crystal panel P held on the bonding stage 41 overlap in a plane. Alignment of the bonding head 32 and the bonding stage 41 is performed.

  At the time of bonding, the control device 25 lowers the bonding head 32 in an inclined state by the drive device 42, so that the front end of the bonding sheet F5 bonded to the holding surface 32a is used as the end of the liquid crystal panel P. The state is pressed from above. The drive device 42 lowers the bonding head 32 so that the bonding sheet F5 is pressed by the liquid crystal panel P. At this time, the control device 25 engages the bonding head 32 and the driving device 42 so that the driving force from the driving device 42 can be transmitted to the bonding head 32.

  FIG. 7 is an explanatory diagram of a bonding operation by the first bonding apparatus 13. In addition, in this description, in the bonding sheet | seat F5 currently bonded by the bonding head 32, when it unwinds from the original fabric roll R1, curvature (curl) shall not arise or curvature shall be small enough. .

  In the present embodiment, the control device 25 drives the drive device 42 and the moving device 44 independently. Specifically, at the time of bonding, the control device 25 performs bonding by moving the bonding head 32 and the liquid crystal panel P relative to each other while pressing the bonding sheet F5 against the liquid crystal panel P as illustrated in FIG. The drive device 42 and the moving device 44 are controlled so that torque is sometimes generated along the feeding direction of the bonding sheet F5 from the holding surface 32a to the liquid crystal panel P. Thereby, the bonding head 32 tilts on the liquid crystal panel P in a state where the torque is generated (see FIG. 6).

  Here, the feeding direction of the bonding sheet F5 to the liquid crystal panel P is, for example, from the one end side to the other end side when the bonding sheet F5 is bonded from one end side to the other end side of the liquid crystal panel P. The direction which goes to, or the direction which goes to the said one end side from the said other end side. When the bonding sheet F5 is bonded to the bonding head 32 without deviation, the direction in the horizontal plane perpendicular to the rotation axis of the bonding head 32 (the left-right direction in FIG. 7) is the feeding direction.

  The bonding head 32 applies the torque so that the end surface of the liquid crystal panel P is brought into contact with the holding member 39 at the time of bonding. The holding member 39 may be provided on the bonding stage 41 or may be provided in another device. According to this, since the end surface of liquid crystal panel P is supported by the holding member 39 at the time of bonding, the said torque by the bonding head 32 can be provided favorably. In addition, for example, when the suction of the liquid crystal panel P by the bonding stage 41 is strong and a torque is applied, if the suction position on the bonding stage 41 of the liquid crystal panel P does not shift, the holding member 39 is not necessarily provided. Not needed.

  Here, as a comparison, the case where the bonding operation is performed without applying the torque will be described. In this case, the bonding operation is performed by cutting the engagement between the bonding head 32 and the driving device 42 and moving the moving device 44 in a state where the bonding head 32 is tiltable.

  Thus, if the said torque is not provided to the bonding head 32, bonding will be performed in the state by which the liquid crystal panel P was pulled diagonally back by the bonding sheet | seat F5 hold | maintained at the bonding head 32. FIG. Therefore, normally, the liquid crystal panel P on which the bonding sheet F5 is bonded has a high possibility of warping toward the upper side (hereinafter also referred to as “upward warping”).

  On the other hand, in this embodiment, as shown in FIG. 7, the said torque provided to the bonding head 32 by controlling the moving apparatus 44 and the drive device 42 each independently, and the bonding sheet in liquid crystal panel P It can balance with the tensile stress to the bonding head 32 side received from F5. Therefore, the bonding sheet F5 bonded to the liquid crystal panel P by the tilting of the bonding head 32 with the torque applied can suppress the stress (tensile force) applied to the surface of the liquid crystal panel P.

  Moreover, the control apparatus 25 is based on the conditions (for example, material, thickness, curl state, etc.) of the bonding sheet F5, and the driving conditions (for example, the amount of movement in the bonding head 32) of the driving device 42 and the moving device 44. The torque applied to the bonding head 32 can be adjusted by appropriately changing the movement speed, the rotation amount, the rotation speed, or the like. Thereby, the 1st bonding apparatus 13 can store the curvature amount which arises in liquid crystal panel P after bonding of the bonding sheet | seat F5 in a fixed range. Here, the amount of warpage within a certain range means that the warpage generated in the liquid crystal panel P is within a level that causes no practical problem.

  Moreover, in this embodiment, the 1st bonding apparatus 13 is provided above the bonding stage 41 which is a bonding position, and a pair of 3rd detection cameras 36 for performing horizontal alignment of liquid crystal panel P are provided. (See FIGS. 5 and 6). Also in the 2nd bonding apparatus 15, a pair of 4th detection camera 37 for performing horizontal alignment of liquid crystal panel P is provided above the bonding stage 41 which is a bonding position similarly (FIG. 5). reference). Each third detection camera 36 images, for example, both corners on the left side in FIG. 5 of the glass substrate (first substrate P1) of the liquid crystal panel P, and each fourth detection camera 37 includes, for example, a glass substrate of the liquid crystal panel P. Each of the left corners in FIG. 5 is imaged.

  Also in the 3rd bonding apparatus 18, a pair of 5th detection camera 38 for performing horizontal alignment of liquid crystal panel P is provided above the bonding stage 41 which is also a bonding position (FIG. 5). reference). Each fifth detection camera 38 images, for example, both corners on the left side in FIG. 5 on the glass substrate of the liquid crystal panel P. Detection information of each of the detection cameras 34 to 38 is sent to the control device 25. It is also possible to use sensors in place of the detection cameras 34 to 38.

  The bonding stage 41 in each bonding apparatus 13, 15, 18 is driven and controlled by the control device 25 based on the detection information of each detection camera 34 to 38. Thereby, alignment of liquid crystal panel P with respect to the bonding head 32 in each bonding position is performed.

  By bonding the bonding sheet F5 from the aligned bonding head 32 to the liquid crystal panel P, the bonding variation of the optical member F1X is suppressed, and the optical axis direction of the optical member F1X with respect to the liquid crystal panel P is reduced. The accuracy is improved and the clarity and contrast of the optical display device are increased.

  As described above, the film bonding system 1 in the above embodiment is formed by bonding the optical member F1X to the liquid crystal panel P, and the liquid crystal panel P is conveyed with respect to the plurality of liquid crystal panels P conveyed on the line. While the belt-shaped optical member sheet FX having a width corresponding to the display area P4 of the panel P is unwound from the original roll R1, the optical member sheet FX is cut to a length corresponding to the display area P4, and the optical member F1X is cut. Then, the optical device F1X is provided with bonding devices 13, 15, and 18 for bonding the liquid crystal panel P to the liquid crystal panel P, and the bonding devices 13, 15, and 18 remove the optical member sheet FX from the original fabric roll R1. Unwinding part 31a which unwinds with separator sheet F3a, and cuts optical member sheet FX, leaving separator sheet F3a, said optical member F A cutting device 31b for X, a knife edge 31c for peeling the optical member F1X from the separator sheet F3a, and the optical member F1X are attached to and held on an arcuate holding surface 32a and held on the holding surface 32a. In order to bond the optical member F1X to the liquid crystal panel P, the bonding head 32 tilting along the curvature of the holding surface 32a and the bonding head 32 are combined with the separator sheet F3a of the optical member F1X. When the optical member F1X is bonded, the moving device 44 moves between the peeling position (separator peeling position 31e) from the substrate and the bonding position (bonding stage 41) of the optical member F1X to the liquid crystal panel P. The bonding head 32 that presses the optical member F1X against the liquid crystal panel P is tilted along the curvature of the holding surface 32a. A drive unit 42 for sea urchin drive, a control unit 25 for controlling these moving device 44 and the drive device 42, and has a. Furthermore, the controller 25 moves the bonding head 32 and the liquid crystal panel P relative to each other while pressing the bonding sheet F5 against the liquid crystal panel P at the time of bonding, so that the holding surface 32a is changed to the liquid crystal panel P at the time of bonding. The driving device 42 and the moving device 44 are controlled so as to generate torque along the feeding direction of the pasting sheet F5.

According to this configuration, the band-shaped optical member sheet FX having a width corresponding to the display region P4 is cut to a predetermined length to form the optical member F1X, and the optical member F1X is held in an arc shape by tilting the bonding head 32. In addition, the optical member F1X is bonded to the liquid crystal panel P by the tilting of the bonding head 32, so that the dimensional variation and bonding variation of the optical member F1X are suppressed, and the frame portion G around the display region P4 is held. By reducing the size, the display area can be enlarged and the device can be downsized.
Moreover, since the optical member F1X is bonded to the liquid crystal panel P by the tilting of the bonding head 32 to which the torque along the feeding direction of the bonding sheet F5 is applied, the liquid crystal panel P after the optical member F1X is bonded to the liquid crystal panel P The warp that occurs can be suppressed.
Moreover, the continuous bonding of the optical member F1X becomes easy, and the production efficiency of the optical display device can be increased.
Further, the optical member F1X can be smoothly held by the tilt of the arc-shaped holding surface 32a, and the optical member F1X can be reliably bonded to the liquid crystal panel P by the tilt of the arc-shaped holding surface 32a.

  Moreover, the said film bonding system 1 makes the said knife edge 31c peel the said optical member F1X from the said separator sheet F3a with the bonding surface with the said liquid crystal panel P facing down, and the said bonding head 32 is the said. An optical member by moving between the peeling position and the bonding position in a state where the upper surface opposite to the bonding surface is bonded to and held on the holding surface 32a and the bonding surface faces downward. The sheet FX is conveyed with the bonding surface on the adhesive layer F2a side facing downward, and it is possible to suppress the occurrence of bonding failure by suppressing scratches on the bonding surface of the optical member sheet FX, adhesion of foreign matters, and the like.

  Moreover, the said film bonding system 1 carries in the said liquid crystal panel P in a carrying-in position (each rotary starting position 11a, 16a), the said bonding position (each bonding stage 41), and a carrying-out position (each rotary terminal position 11b, 16b). By providing the rotary indexes 11 and 16 to be moved to each other, the transport direction of the liquid crystal panel P can be switched efficiently and the length of the rotary indexes 11 and 16 can be suppressed as a part of the line. Can be increased.

  Moreover, in the film bonding system 1, the bonding apparatuses 13, 15, and 18 have a detection means (first detection camera 34) for detecting a defect mark marked on the optical member sheet FX, and the optical member sheet FX. The part where the defect mark is detected is held by the bonding head 32 and conveyed to the disposal position (discard position). Therefore, the yield of an optical display device improves and the film bonding system 1 with good productivity can be provided.

(Second embodiment)
Then, the structure of the film bonding system which concerns on 2nd embodiment is demonstrated. FIG. 8 is a schematic configuration diagram of the film bonding system 2 of the present embodiment. In FIG. 8, for convenience of illustration, the film bonding system 2 is described in two upper and lower stages. Hereinafter, the same reference numerals are given to components common to the first embodiment, and detailed description thereof is omitted.

  In 1st embodiment, the case where the width | variety and length of the optical member F1X bonded by the bonding head 32 were equivalent to it in the display area P4 of liquid crystal panel P was mentioned as an example. On the other hand, in this embodiment, after pasting a sheet piece larger than the display region P4 (width and length) to the liquid crystal panel P, a cutting device for cutting off an excess portion of the sheet piece is provided. In this respect, it differs greatly from the first embodiment.

  In this embodiment, as shown in FIG. 8, the film bonding system 2 has long, strip-like first, second, and third optical member sheets F1, F2, and F3 (optical members) on the front and back surfaces of the liquid crystal panel P. The first, second and third optical members F11, F12, F13 (optical member F1X) cut out from the sheet FX) are bonded together.

  In the present embodiment, the first, second, and third optical members F11, F12, and F13 are first, second, and third sheet pieces F1m, F2m, and F3m (hereinafter collectively referred to as sheet pieces FXm). In other cases, the excess portion outside the display area is cut off.

  FIG. 9 is a plan view (top view) of the film bonding system 2, and the film bonding system 2 will be described below with reference to FIGS. In the figure, an arrow F indicates the transport direction of the liquid crystal panel P. In the following description, as in the first embodiment, the upstream side in the transport direction of the liquid crystal panel P is referred to as the upstream side of the panel transport, and the downstream side in the transport direction of the liquid crystal panel P is referred to as the downstream side of the panel transport.

  The film bonding system 2 sets the predetermined position of the main conveyor 5 as the start point 5a and the end point 5b of the bonding process. The film bonding system 2 includes a first sub conveyor 6 and a second sub conveyor 7, a first conveying device 8, a cleaning device 9, a first rotary index 11, a second conveying device 12, and a first bonding. The apparatus 13 and the 2nd bonding apparatus 15, the film peeling apparatus 14, and the 1st cutting device 51 are provided.

  Furthermore, the film bonding system 2 includes a second rotary index 16 provided on the panel transport downstream side of the first rotary index 11, a third transport device 17, a third bonding device 18, and a second cutting device 52. The second sub-conveyor 7, the fourth transport device 21, and the fifth transport device 22 are provided.

  The film laminating system 2 uses the lines formed by the driven main conveyor 5, the sub conveyors 6 and 7, and the rotary indexes 11 and 16 to transfer the liquid crystal panel P to the liquid crystal panel P in order. Apply. The liquid crystal panel P is conveyed, for example, in the main conveyor 5 with the short side of the display area P4 along the conveying direction, and in each of the sub conveyors 6 and 7 orthogonal to the main conveyor 5, the long side of the display area P4 is conveyed in the conveying direction. In each rotary index 11, 16, the long side of the display area P 4 is conveyed in a direction along the radial direction of each rotary index 11, 16.

  The film bonding system 2 bonds a sheet piece (corresponding to the optical member F1X) of the bonding sheet F5 cut out to a predetermined length from the belt-shaped optical member sheet FX on the front and back surfaces of the liquid crystal panel P.

  The first rotary index 11 is rotationally driven clockwise with the carry-in position from the second transport device 12 (left end portion in plan view in FIG. 9) as the first rotary starting position 11a. The 1st rotary index 11 makes the position (upper end part of FIG. 9) rotated 90 degrees clockwise from the 1st rotary starting position 11a the 1st bonding carrying in / out position 11c.

  In this 1st bonding carrying in / out position 11c, liquid crystal panel P is carried in into the 1st bonding apparatus 13 with the conveyance robot not shown. In this embodiment, the 1st sheet | seat piece F1m of the backlight side in liquid crystal panel P is bonded by the 1st bonding apparatus 13. FIG. The first sheet piece F1m is a sheet piece of the first optical member sheet F1 having a size larger than the display area P4 of the liquid crystal panel P. The 1st optical member bonding body PA1 is formed when the 1st sheet piece F1m is bonded by the 1st bonding apparatus 13 on the surface one side of liquid crystal panel P. As shown in FIG. 1st optical member bonding body PA1 is carried in from the 1st bonding apparatus 13 to the 1st bonding carrying in / out position 11c of the 1st rotary index 11 by the conveyance robot not shown.

  The 1st rotary index 11 makes the film peeling position 11e the position rotated 45 degrees clockwise from the 1st bonding carrying in / out position 11c (upper right end part of FIG. 9). At the film peeling position 11e, the film peeling device 14 peels the surface protection film F4a of the first sheet piece F1m.

The 1st rotary index 11 makes the position (right end position of FIG. 9) rotated 45 degrees clockwise from the film peeling position 11e the 2nd bonding carrying in / out position 11d.
At this second bonding carry-in / out position 11d, the liquid crystal panel P is carried into the second bonding apparatus 15 by a transport robot (not shown). In this embodiment, the 2nd bonding apparatus 15 bonds the 2nd sheet piece F2m by the side of the backlight in liquid crystal panel P. As shown in FIG. The second sheet piece F2m is a sheet piece of the second optical member sheet F2 having a size larger than the display area of the liquid crystal panel P. The 2nd optical member bonding body PA2 is formed by the 2nd bonding apparatus 15 bonding the 2nd sheet piece F2m to the surface at the side of the 1st sheet piece F1m of 1st optical member bonding body PA1.
2nd optical member bonding body PA2 is carried in from the 2nd bonding apparatus 15 to the 2nd bonding carrying in / out position 11d of the 1st rotary index 11 by the conveyance robot not shown.

  The 1st rotary index 11 makes the position (lower end part of FIG. 9) rotated 90 degrees clockwise from the 2nd bonding position 11d the 1st rotary terminal position (1st cutting position) 11b.

  In the present embodiment, the first rotary terminal position 11b is a first cutting position where the first sheet piece F1m and the second sheet piece F2m are cut by the first cutting device 51. The 1st cutting device 51 puts together the excess part arrange | positioned on the outer side of the part which opposes the display area P4 of liquid crystal panel P from each of the 1st sheet piece F1m bonded to liquid crystal panel P, and the 2nd sheet piece F2m. The first optical member F11 made of the first optical member sheet F1 and the second optical member F12 made of the second optical member sheet F2 are formed as optical members having a size corresponding to the display area P4 of the liquid crystal panel P. .

  In the present specification, the “part facing the display region P4” is a region having a size not less than the size of the display region P4 and not more than the size of the outer shape of the optical display component (liquid crystal panel P). And the area | region which avoided functional parts, such as an electrical component attachment part, is shown. That is, “separate the excess portion outside the portion facing the display region P4” includes the case where the excess portion is separated along the outer peripheral edge of the optical display component (liquid crystal panel P).

  By bonding the first sheet piece F1m and the second sheet piece F2m to the liquid crystal panel P and then cutting them together, the first optical member F11 and the second optical member F12 are not misaligned, and the outside of the display area P4. The first optical member F11 and the second optical member F12 that match the shape of the periphery are obtained. Moreover, the cutting process of the 1st sheet piece F1m and the 2nd sheet piece F2m is also simplified.

  The first optical device F11 and the first optical member F11 and the second surface piece of the liquid crystal panel P are separated from the first and second surfaces of the liquid crystal panel P by separating the excess portions of the first sheet piece F1m and the second sheet piece F2m from the second optical member bonding body PA2 by the first cutting device 51. 3rd optical member bonding body PA3 formed by bonding 2 optical member F12 is formed. The surplus part cut off from the first sheet piece FX1 and the second sheet piece F2m is peeled off and collected from the liquid crystal panel P by a peeling device (not shown). 3rd optical member bonding body PA3 is carried out by the 3rd conveying apparatus 17 in the 1st rotary terminal position 11b.

  The 3rd conveying apparatus 17 hold | maintains liquid crystal panel P (3rd optical member bonding body PA3), and conveys it freely in a vertical direction and a horizontal direction. The third transport device 17 transports, for example, the liquid crystal panel P held by suction to the second rotary starting position 16a of the second rotary index 16, and reverses the front and back of the liquid crystal panel P during this transport, so that the second rotary starting position The suction is released at 16 a and the liquid crystal panel P is transferred to the second rotary index 16.

  The second rotary index 16 is driven to rotate clockwise with the carry-in position from the third transport device 17 (the upper end portion in plan view in FIG. 9) as the second rotary initial position 16a. The 2nd rotary index 16 makes the position (right end part of FIG. 9) rotated 90 degrees clockwise from the 2nd rotary initial position 16a the 3rd bonding carrying in / out position 16c.

  At the third bonding carry-in / out position 16c, the liquid crystal panel P is carried into the third bonding apparatus 18 by a transport robot (not shown). In this embodiment, the 3rd bonding apparatus 18 bonds the 3rd sheet piece F3m by the side of a display surface. The third sheet piece F3m is a sheet piece of the third optical member sheet F3 having a size larger than the display area of the liquid crystal panel P. The third bonding device 18 changes the surface of the liquid crystal panel P to the other surface (the surface opposite to the surface on which the first optical member F11 and the second optical member F12 of the third optical member bonding body PA3 are bonded). The fourth optical member bonding body PA4 is formed by bonding the three sheet pieces F3m. 4th optical member bonding body PA4 is carried in from the 3rd bonding apparatus 18 to the 3rd bonding carrying in / out position 16c of the 2nd rotary index 16 by the conveyance robot not shown.

  In this embodiment, the 2nd rotary index 16 makes the position (lower end part of FIG. 9) rotated 90 degrees clockwise from the 3rd bonding position 16c the 2nd cutting position 16d. At the second cutting position 16d, the third sheet piece F3m is cut by the second cutting device 52. The 2nd cutting device 52 cut | disconnects the excess part arrange | positioned outside the part facing the display area P4 of liquid crystal panel P from the 3rd sheet piece F3m bonded by liquid crystal panel P, and displays area P4 of liquid crystal panel P An optical member having a size corresponding to (third optical member F13) is formed.

  The third optical member F13 is bonded to the other side of the front and back surfaces of the liquid crystal panel P by separating the excess portion of the third sheet piece F3m from the fourth optical member bonding body PA4 by the second cutting device 52, and the liquid crystal The 5th optical member bonding body PA5 formed by bonding the 1st optical member F11 and the 2nd optical member F12 to the surface one side of the panel P is formed. The surplus part cut off from the third sheet piece F3m is peeled off and collected from the liquid crystal panel P by a peeling device (not shown).

  Here, the 1st cutting device 51 and the 2nd cutting device 52 are CO2 laser cutters, for example. In addition, the structure of the 1st and 2nd cutting devices 51 and 52 is not limited to this, For example, it is also possible to use other cutting means, such as a cutting blade.

  The 1st cutting device 51 and the 2nd cutting device 52 cut | disconnect endlessly the sheet piece FXm bonded by liquid crystal panel P along the outer periphery of the display area P4. The first cutting device 51 and the second cutting device 52 are connected to the same laser output device 53. By the first cutting device 51, the second cutting device 52, and the laser output device 53, the excess portion disposed outside the portion facing the display region P4 is separated from the sheet piece FXm, and an optical having a size corresponding to the display region P4. Cutting means for forming the member sheet FX is configured. Since the laser output required for cutting each of the sheet pieces F1m, F2m, and F3m is not so large, the high-power laser light output from the laser output device 53 is branched into two, and the first cutting device 51 and the second cutting device. You may supply to the apparatus 52. FIG.

  In the present embodiment, the second rotary index 16 has a position (left end portion in FIG. 9) rotated 90 ° clockwise from the second cutting position 16d as a second rotary terminal position 16b. The fifth optical member bonding body PA5 is carried out by the fourth transport device 21 at the second rotary terminal position 16b.

  The 4th conveying apparatus 21 hold | maintains liquid crystal panel P (5th optical member bonding body PA5), and conveys it freely in a vertical direction and a horizontal direction. For example, the fourth transport device 21 transports the liquid crystal panel P held by suction to the second starting position 7a of the second sub-conveyor 7, releases the suction at the second starting position 7a, and moves the liquid crystal panel P to the second sub-conveying position 7a. Delivered to the conveyor 7.

  The fifth transport device 22 holds the liquid crystal panel P (fifth optical member bonding body PA5) and transports it freely in the vertical direction and the horizontal direction. For example, the fifth transport device 22 transports the liquid crystal panel P held by suction to the end point 5b of the main conveyor 5, releases the suction at the end point 5b, and delivers the liquid crystal panel P to the main conveyor 5.

  An unillustrated bonding inspection position is installed on the transport path of the liquid crystal panel P (fifth optical member bonding body PA5) after the second rotary terminal position 16b, and film bonding is performed at this bonding inspection position. An inspection (not shown) of the workpiece (liquid crystal panel P) subjected to the inspection (inspection of whether or not the position of the optical member F1X is appropriate (whether the positional deviation is within the tolerance range) or the like) is performed. The work determined that the position of the optical member F1X with respect to the liquid crystal panel P is not appropriate is discharged out of the system by a not-shown discharging means.

  With the above, the bonding process by the film bonding system 2 is completed.

  Hereinafter, the bonding process of the bonding sheet F5 to the liquid crystal panel P by the first bonding apparatus 13 will be described as an example. In addition, description about the bonding process by the 2nd and 3rd bonding apparatuses 15 and 18 which have the same structure as the 1st bonding apparatus 13 is abbreviate | omitted.

  In this embodiment, the 1st bonding apparatus 13 cuts out the sheet piece (1st sheet piece F1m) of the bonding sheet | seat F5 larger than the display area P4 of liquid crystal panel P from the 1st optical member sheet | seat F1, and the bonding head. It is made to stick on the holding surface 32a by tilting 32. The 1st bonding apparatus 13 bonds the sheet piece (1st sheet piece F1m) of the bonding sheet | seat F5 by tilting the bonding head 32 on liquid crystal panel P on the bonding stage 41. FIG.

  The bonding stage 41 is driven and controlled by the control device 25 based on the detection information of the detection cameras 34 to 38. Thereby, alignment of liquid crystal panel P with respect to the bonding head 32 in each bonding position is performed.

  By bonding the bonding sheet F5 (sheet piece FXm) from the alignment bonding head 32 to the liquid crystal panel P, the bonding variation of the optical member F1X is suppressed, and the optical member F1X for the liquid crystal panel P is suppressed. The accuracy in the optical axis direction of the optical display device is improved, and the vividness and contrast of the optical display device are increased.

  Here, the polarizer film constituting the optical member sheet FX is formed by, for example, uniaxially stretching a PVA film dyed with a dichroic dye, but the PVA film has uneven thickness or dichroism when stretched. There may be a variation in the direction of the academic axis in the plane of the optical member sheet FX due to uneven coloring of the pigment.

  Therefore, in the present embodiment, the control device 25 uses the liquid crystal panel for the optical member sheet FX based on the inspection data of the in-plane distribution of the optical axis in each part of the optical member sheet FX stored in advance in the storage device 24 (see FIG. 8). P bonding position (relative bonding position) is determined. And each bonding apparatus 13,15,18 aligns liquid crystal panel P with respect to the sheet piece FXm cut out from the optical member sheet | seat FX according to this bonding position, and bonds liquid crystal panel P to the sheet piece FXm. To do.

  The determination method of the bonding position (relative bonding position) of the sheet piece FXm with respect to liquid crystal panel P is as follows, for example.

  First, as shown in FIG. 10A, 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 R1, or may be until the optical member sheet FX is unwound from the original fabric roll R1 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 of the optical member sheet FX (position in the longitudinal direction and position in the width direction of the optical member sheet FX).

  The control device 25 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 (not shown), and the optical member sheet FX (cut) of the portion from which the sheet piece FXm is cut out. The direction of the average optical axis in the area defined by the lead-in line CL is detected.

  For example, as shown in FIG. 10B, an angle (deviation angle) formed between the direction of the optical axis and the edge line EL of the optical member sheet FX is detected for each inspection point CP, and the largest angle among the deviation angles. When (max deviation angle) is θmax and the smallest angle (minimum deviation angle) is θmin, an average value θmid (= (θmax + θmin) / 2) of the maximum deviation angle θmax and the minimum deviation angle θmin is an average deviation angle. Detect as. Then, the direction that forms the average deviation angle θmid with respect to the edge line EL of the optical member sheet FX is detected as the average direction of the optical axis of the optical member sheet FX. The deviation angle is calculated, for example, with the counterclockwise direction being positive with respect to the edge line EL of the optical member sheet FX and the clockwise direction being negative.

  Then, the direction of the average optical axis of the optical member sheet FX detected by the above method makes a desired angle with respect to the long side or the short side of the display region P4 of the liquid crystal panel P. The bonding position (relative bonding position) of the sheet piece FXm is determined. For example, when the direction of the optical axis of the optical member F1X is set to be 90 ° with respect to the long side or the short side of the display region P4 according to the design specifications, the average optical axis of the optical member sheet FX is set. The sheet piece FXm is bonded to the liquid crystal panel P so that the direction is 90 ° with respect to the long side or the short side of the display region P4.

Also in the present embodiment, torque is applied to the bonding head 32 by independently controlling the moving device 44 and the driving device 42. Thereby, in liquid crystal panel P, the tensile stress and balance to the head side received from the 1st sheet piece F1m stuck to the bonding head 32 are adjusted.
Therefore, also in this embodiment, the curvature amount which arises in liquid crystal panel P after bonding of the 1st sheet piece F1m can be stored in a fixed range.

  The above-described cutting devices 51 and 52 detect the outer peripheral edge of the display area P4 of the liquid crystal panel P with a detecting means such as a camera, and the sheet piece FXm bonded to the liquid crystal panel P is along the outer peripheral edge of the display area P4. Cut endlessly. The outer peripheral edge of the display area P4 is detected by imaging the edge of the liquid crystal panel P, the alignment mark provided on the liquid crystal panel P, or the outermost edge of the black matrix provided in the display area P4. Outside the display area P4, a frame portion G (see FIG. 3) having a predetermined width for arranging a sealant or the like for bonding the first and second substrates of the liquid crystal panel P is provided. The sheet piece FXm is cut by the cutting devices 51 and 52.

  In addition, the detection method of the direction of the average optical axis in the surface of the optical member sheet | seat FX is not limited to the said method. For example, one or a plurality of inspection points CP are selected from a plurality of inspection points CP (see FIG. 10A) set in the width direction of the optical member sheet FX, and an optical is selected for each selected inspection point CP. An angle (deviation angle) formed between the axis direction and the edge line EL of the optical member sheet FX is detected. Then, the average value of the deviation angles in the optical axis direction of the selected one or more inspection points CP is detected as the average deviation angle, and the direction forming the average deviation angle with respect to the edge line EL of the optical member sheet FX is optically detected. You may detect as the direction of the average optical axis of member sheet FX.

As described above, the film bonding system 2 of the present embodiment is a strip-shaped optical member sheet FX having a width wider than the length of either one of the long side and the short side of the display region P4 of the liquid crystal panel P. Is unwound from the raw roll R1, and the optical member sheet FX is cut to a length longer than the length of either one of the long side and the short side of the display region P4 to obtain a sheet piece FXm, The sheet apparatus FXm is bonded to the liquid crystal panel P to form an optical member bonded body, and the outside of the portion facing the display region P4 from the sheet piece FXm bonded to the liquid crystal panel P. Cutting devices 51 and 52 that cut off the arranged surplus portion and form an optical member F1X having a size corresponding to the display region P4. Therefore, the optical member F1X can be accurately provided up to the display area P4, and the frame portion G (see FIG. 3) outside the display area P4 can be narrowed to enlarge the display area and downsize the device.
Moreover, since the bonding head 32 gives a torque to the sheet piece FXm at the time of bonding of the sheet piece FXm, the amount of warpage generated in the liquid crystal panel P after bonding of the optical member F1X is suppressed as in the first embodiment. Can do.

  Moreover, in the film bonding system 2, the 1st cutting device 51 and the 2nd cutting device 52 are laser cutters, the 1st cutting device 51 and the 2nd cutting device 52 are connected to the same laser output device 53, The laser output from the laser output device 53 may be branched and supplied to the first cutting device 51 and the second cutting device 52. In this case, as compared with the case where separate laser output devices are connected to the first cutting device 51 and the second cutting device 52, the production system of the optical display device can be downsized.

Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention, including the component configuration, structure, shape, size, number, arrangement, and the like.
For example, in the said embodiment, the case where the movement apparatus 44 moved the bonding head 32 at the time of bonding performed the relative movement of liquid crystal panel P and the bonding head 32 was mentioned as an example, but the bonding head 32 was mentioned. A configuration may be adopted in which the liquid crystal panel P is moved relative to the bonding head 32 by moving the bonding stage 41 without moving.

Moreover, in the said embodiment, the case where the curvature has not arisen previously in the bonding sheet | seat F5 or sheet piece (1st sheet piece F1m) bonded to the holding surface 32a of the bonding head 32, or curvature is small enough. It was explained as a premise.
However, since the bonding sheet F5 is usually unwound from the raw roll R1 around which the first optical member sheet F1 is wound, the bonding sheets F5 often have warpage (curl). . When the bonding sheet F5 having such a warp is attached to both surfaces of the liquid crystal panel P, the warped state is warped so as to protrude downward as shown in FIGS. 11 (a) to (c). Then, as shown in FIGS. 12A to 12C, there is a possibility that a reverse warping state that warps upward is generated.

  As a case where the liquid crystal panel P is warped, there are three patterns as shown in FIGS. In addition, in FIG. 11 (a) thru | or (c), the bonding sheet bonded by the display surface side of liquid crystal panel P is called the front side sheet | seat FS, and is bonded by the other side (back surface side). The joint sheet is referred to as a rear seat RS.

  FIG. 11A shows that the front side sheet FS has a relatively strong warp convex on the liquid crystal panel P side (hereinafter sometimes referred to as a strong curl), and the rear side sheet RS is opposite to the liquid crystal panel P. A case having a relatively weak warp on the side (hereinafter also referred to as weak reverse curl) is shown. FIG. 11B shows a case where the front side seat FS has a normal curl and the rear side seat RS has a reverse curl of the same strength. FIG. 11C shows a case where the front seat FS has a relatively weak weak reverse curl and the rear seat RS has a relatively strong strong reverse curl.

  In this way, in the case shown in FIGS. 11A to 11C, the above-described warpage is applied to the liquid crystal panel after the double-sided bonding from the relationship between the curl direction and the strength of the front side sheet FS and the rear side sheet RS. It is thought to cause.

  When the front side sheet FS and the rear side sheet RS are bonded in a combination that causes warping as shown in FIGS. 11A to 11C, the bonding is performed when the front side sheet FS is bonded to the liquid crystal panel P. The torque is applied to the bonding head 32, and the torque is not applied to the bonding head 32 when the rear sheet RS is bonded to the liquid crystal panel P. According to this, it has been confirmed that the liquid crystal panel P to which the front side sheet FS and the rear side sheet RS are bonded is prevented from warping.

  On the other hand, when the torque is applied only on the back surface of the liquid crystal panel P or on both surfaces, the influence of the warp of the front side sheet FS and the rear side sheet RS cannot be corrected. It was confirmed that the warpage occurred in the liquid crystal panel P after joining.

  As described above, when the liquid crystal panel P is warped (see FIGS. 11A to 11C), the bonding sheet F5 is bonded to one surface (display surface) of the liquid crystal panel P. When the bonding sheet F5 is bonded to the other surface (rear surface), the warpage generated in the liquid crystal panel P after bonding can be suppressed by not applying the torque. .

  Moreover, as a case where the liquid crystal panel P is caused to be reversely warped, three patterns as shown in FIGS. 12A to 12C are conceivable. In addition, also in FIG. 12 (a) thru | or (c), the bonding sheet | seat F5 bonded by the display surface side of liquid crystal panel P is called the front side sheet | seat FS, and the bonding sheet | seat F5 bonded by the other side. Is referred to as a rear seat RS.

  FIG. 12A shows a case where the front side seat FS has a relatively weak positive curl and the rear side seat RS has a relatively strong positive curl. FIG. 12B shows a case where the front side seat FS has a reverse curl and the rear side seat RS has a normal curl of the same strength. FIG. 12C shows a case where the front seat FS has a relatively strong strong reverse curl and the rear seat RS has a relatively weak weak reverse curl.

  Thus, in the case shown in FIGS. 12A to 12C, it is considered that the above-described reverse warp is caused from the relationship between the curl direction and the strength of the front seat FS and the rear seat RS.

  When the front side sheet FS and the rear side sheet RS are bonded in a combination that causes reverse warping as shown in FIGS. 12A to 12C, the bonding is performed when the front side sheet FS is bonded to the liquid crystal panel P. The torque is not applied to the bonding head 32, and the torque is applied to the bonding head 32 when the rear sheet RS is bonded to the liquid crystal panel P. According to this, it has been confirmed that the liquid crystal panel P to which the front side sheet FS and the rear side sheet RS are bonded is prevented from warping.

  On the other hand, when the torque is applied only on the surface of the liquid crystal panel P or on both surfaces, the influence of the warp that the front side sheet FS and the rear side sheet RS had cannot be corrected. It was confirmed that the warpage occurred in the liquid crystal panel P after joining.

  As described above, when the liquid crystal panel P is warped (see FIGS. 12A to 12C), the bonding sheet F5 is bonded to one surface (back surface) of the liquid crystal panel P. When the above torque is applied and the bonding sheet F5 is bonded to the other surface (display surface), warpage occurring in the liquid crystal panel P after bonding can be suppressed by preventing the above torque from being applied. .

  As described above, the present invention can be applied by appropriately applying the above torque when the bonding sheet F5 is bonded to at least one surface of the liquid crystal panel P based on the curl characteristics generated in advance in the bonding sheet F5. The amount of warpage occurring in the liquid crystal panel P after joining can be suppressed.

Moreover, in the said embodiment, as shown in FIG. 7, the holding member 39 is provided only in the one end side (left end side in FIG. 7) where the bonding sheet | seat F5 begins to be bonded with respect to liquid crystal panel P, and is bonded. Although the case where the combined head 32 applies the torque in a direction in which the end face of the liquid crystal panel P is brought into contact with the holding member 39 has been described as an example, the present invention is not limited to this. That is, the holding member 39 may be provided on the other end side (right end side in FIG. 7) or both sides (left and right sides of the liquid crystal panel P in FIG. 7) where the bonding sheet F5 is bonded to the liquid crystal panel P. Good.
In this case, the bonding head 32 may apply the torque so that the end face of the liquid crystal panel P is brought into contact with the holding member 39 provided on the other end side. That is, the bonding head 32 applies torque to the liquid crystal panel P along the direction opposite to the direction in which the torque is shown in FIG. 7 (the direction opposite to the arrow in the left direction shown in FIG. 7). You may make it suppress the curvature amount which arises in liquid crystal panel P after joining. Even when the torque is applied in the reverse direction as described above, as in the case described with reference to FIG. 7, for example, the liquid crystal panel P is strongly adsorbed by the bonding stage 41. When there is no deviation in the suction position on the bonding stage 41, the holding member 39 is not necessarily provided.

  The size of the surplus portion of the sheet piece FXm (the size of the portion that protrudes outside the liquid crystal panel P) is appropriately set according to the size of the liquid crystal panel P. For example, when the sheet piece FXm is applied to a medium-to-small size liquid crystal panel P of 5 to 10 inches, the distance between one side of the sheet piece FXm and one side of the liquid crystal panel P is 2 mm on each side of the sheet piece FXm. Set to a length in the range of ~ 5 mm.

  Hereinafter, the film bonding system which concerns on 3rd embodiment of this invention is demonstrated with reference to FIGS. In FIGS. 13 to 15, the second sheet piece F <b> 2 m is not shown for convenience. In this embodiment, the same code | symbol is attached | subjected to the structure similar to the film bonding system 2 demonstrated in the said embodiment, and detailed description is abbreviate | omitted. In addition, the optical member F1X in this embodiment is formed by separating the excess part of the outer side of the bonding surface from the sheet piece FXm bonded to the liquid crystal panel P.

  The film bonding system which concerns on this embodiment is provided with the 1st detection apparatus 91 (refer FIG. 14). The 1st detection apparatus 91 is provided in a panel conveyance downstream rather than the 2nd bonding position 11d. The 1st detection apparatus 91 detects the edge of the bonding surface (henceforth a 1st bonding surface) of liquid crystal panel P and the 1st sheet piece F1m.

  For example, as shown in FIG. 13, the first detection device 91 has an edge ED (outside of the bonding surface) of the first bonding surface SA1 in the four inspection areas CA installed on the conveyance path of the upstream conveyor 6. Edge). Each inspection area | region CA is arrange | positioned in the position corresponding to four corner | angular parts of 1st bonding surface SA1 which has a rectangular shape. The edge ED is detected for each liquid crystal panel P conveyed on the line. The edge ED data detected by the first detection device 91 is stored in the storage device 24 (see FIG. 8).

  The arrangement position of the inspection area CA is not limited to this. For example, each inspection area | region CA may be arrange | positioned in the position corresponding to a part (for example, center part of each side) of each edge | side of 1st bonding surface SA1.

FIG. 14 is a schematic diagram of the first detection device 91.
As shown in FIG. 14, the first detection device 91 has an illumination light source 94 that illuminates the edge ED and the first bonding surface SA1 rather than the edge ED with respect to the normal direction of the first bonding surface SA1. An image pickup device 93 that is arranged at a position inclined inward and picks up an image of the edge ED from the side on which the first sheet piece F1m of the first optical member bonding body PA1 is bonded.

  The illumination light source 94 and the imaging device 93 are each arrange | positioned at four test | inspection area | region CA (position corresponding to four corner | angular parts of 1st bonding surface SA1) shown in FIG.

  An angle θ (hereinafter referred to as an inclination angle θ of the imaging device 93) formed by the normal line of the first bonding surface SA1 and the normal line of the imaging surface 93a of the imaging device 93 is divided into panels within the imaging field of the imaging device 93. It is preferable to set so that time lag, burrs and the like do not enter. For example, when the end surface of the second substrate P2 is shifted outward from the end surface of the first substrate P1, the inclination angle θ of the imaging device 93 is such that the edge of the second substrate P2 enters the imaging field of the imaging device 93. Set to not.

  The inclination angle θ of the imaging device 93 is set so as to match the distance H between the first bonding surface SA1 and the center of the imaging surface 93a of the imaging device 93 (hereinafter referred to as the height H of the imaging device 93). It is preferred that For example, when the height H of the imaging device 93 is 50 mm or more and 100 mm or less, the inclination angle θ of the imaging device 93 is preferably set to an angle in the range of 5 ° or more and 20 ° or less. However, when the deviation amount is empirically known, the height H of the imaging device 93 and the inclination angle θ of the imaging device 93 can be obtained based on the deviation amount. In the present embodiment, the height H of the imaging device 93 is set to 78 mm, and the inclination angle θ of the imaging device 93 is set to 10 °.

  The illumination light source 94 and the imaging device 93 are fixedly arranged in each inspection area CA.

  In addition, the illumination light source 94 and the imaging device 93 may be arrange | positioned so that a movement is possible along the edge ED of 1st bonding surface SA1. In this case, it is only necessary to provide one illumination light source 94 and one imaging device 93 each. Thereby, the illumination light source 94 and the imaging device 93 can be moved to a position where the edge ED of the first bonding surface SA1 can be easily imaged.

  The illumination light source 94 is arrange | positioned on the opposite side to the side by which the 1st sheet piece F1m of 1st optical member bonding body PA1 was bonded. The illumination light source 94 is arrange | positioned in the position which inclined outside the 1st bonding surface SA1 rather than the edge ED with respect to the normal line direction of 1st bonding surface SA1. In the present embodiment, the optical axis of the illumination light source 94 and the normal line of the imaging surface 93a of the imaging device 93 are parallel.

  In addition, the illumination light source may be arrange | positioned at the side by which the 1st sheet piece F1m of 1st optical member bonding body PA1 was bonded.

  Further, the optical axis of the illumination light source 94 and the normal line of the imaging surface 93a of the imaging device 93 may slightly cross each other.

  Moreover, as shown in FIG. 15, each of the imaging device 93 and the illumination light source 94 may be arrange | positioned in the position which overlaps with edge ED along the normal line direction of 1st bonding surface SA1. A distance H1 between the first bonding surface SA1 and the center of the imaging surface 93a of the imaging device 93 (hereinafter referred to as a height H1 of the imaging device 93) detects the edge ED of the first bonding surface SA1. It is preferable to set the position at an easy position. For example, the height H1 of the imaging device 93 is preferably set in a range of 50 mm or more and 150 mm or less.

  The cutting position of the first sheet piece F1m is adjusted based on the detection result of the edge ED of the first bonding surface SA1. The control device 25 (see FIG. 8) acquires the data of the edge ED of the first bonding surface SA1 stored in the storage device 24 (see FIG. 8), and the first optical member F11 is outside the liquid crystal panel P (see FIG. 8). The cut position of the 1st sheet piece F1m is determined so that it may become the magnitude | size which does not protrude on the outer side of 1st bonding surface SA1. The first cutting device 51 cuts the first sheet piece F1m at the cutting position determined by the control device 25.

  Returning to FIGS. 8 and 9, the first cutting device 51 is provided on the downstream side of the panel conveyance with respect to the first detection device 91. The 1st cutting device 51 puts together the excess part arrange | positioned on the outer side of the part corresponding to 1st bonding surface SA1 from each of the 1st sheet piece F1m bonded to liquid crystal panel P, and the 2nd sheet piece F2m. The first optical member F11 made of the first optical member sheet F1 and the second optical member F12 made of the second optical member sheet F2 are formed as optical members having a size corresponding to the first bonding surface SA1.

  Here, the “size corresponding to the first bonding surface SA1” is not less than the size of the display region P4 and not more than the size of the outer shape (contour shape in plan view) of the liquid crystal panel P, and Indicates the size of the area that avoids functional parts such as electrical component mounting parts.

  By laminating the first sheet piece F1m and the second sheet piece F2m to the liquid crystal panel P and then cutting them together, there is no positional deviation between the first optical member F11 and the second optical member F12, and the first bonding surface. The first optical member F11 and the second optical member F12 that match the shape of the outer peripheral edge of SA1 are obtained. Moreover, the cutting process of the 1st sheet piece F1m and the 2nd sheet piece F2m is also simplified.

  The first cutting device 51 cuts off the excess portions of the first sheet piece F1m and the second sheet piece F2m from the second optical member bonding body PA2, so that the first optical member F11 and the first optical member F11 on the front and back surfaces of the liquid crystal panel P are separated. 3rd optical member bonding body PA3 formed by bonding 2 optical member F12 is formed. At this time, the 3rd optical member bonding body PA3 and the part (each optical member F11, F12) corresponding to 1st bonding surface SA1 are cut off, and the surplus part of each sheet piece F1m, F2m which remains in frame shape. To be separated. The surplus part cut off from the first sheet piece FX1 and the second sheet piece F2m is peeled off and collected from the liquid crystal panel P by a peeling device (not shown).

Here, the “part corresponding to the first bonding surface SA1” is a region that is not less than the size of the display region P4 and not more than the size of the outer shape of the liquid crystal panel P, and a functional part such as an electrical component mounting portion. Indicates the area that was avoided. In the present embodiment, in the three sides excluding the functional portion in the liquid crystal panel P having a rectangular shape in plan view, the surplus portion is laser-cut along the outer peripheral edge of the liquid crystal panel P, and in one side corresponding to the functional portion, the liquid crystal The surplus portion is laser-cut at a position that appropriately enters the display region P4 side from the outer peripheral edge of the panel P. For example, when the portion corresponding to the first bonding surface SA1 is the bonding surface of the TFT substrate, a predetermined amount from the outer peripheral edge of the liquid crystal panel P to the display region P4 side so as to exclude the functional portion on one side corresponding to the functional portion. Cut at the shifted position.
In addition, it is not restricted to bonding a sheet piece to the area | region (for example, whole liquid crystal panel P) containing the said functional part in liquid crystal panel P. FIG. For example, a sheet piece is pasted in a region avoiding the functional portion in the liquid crystal panel P in advance, and then along the outer peripheral edge of the liquid crystal panel P on three sides excluding the functional portion in the liquid crystal panel P having a rectangular shape in plan view. The excess portion may be laser cut.

  Moreover, a film bonding system is provided with the 2nd detection apparatus 92 (refer FIG. 14). The 2nd detection apparatus 92 is provided in the panel conveyance downstream rather than the 3rd bonding position 16c. The 2nd detection apparatus 92 detects the edge of the bonding surface (henceforth a 2nd bonding surface) of liquid crystal panel P and the 3rd sheet piece F3m. The edge data detected by the second detection device 92 is stored in the storage device (see FIG. 8).

  The cut position of the third sheet piece F3m is adjusted based on the detection result of the edge of the second bonding surface. The control device 25 (see FIG. 8) acquires the edge data of the second bonding surface stored in the storage device 24 (see FIG. 8), and the third optical member F13 is outside the liquid crystal panel P (second The cut position of the 3rd sheet piece F3m is determined so that it may become the magnitude | size which does not protrude to the outer side of the bonding surface. The second cutting device 52 cuts the third sheet piece F3m at the cutting position determined by the control device 25.

  The second cutting device 52 is provided on the downstream side of the panel conveyance with respect to the second detection device 92. The 2nd cutting device 52 cut | disconnects the excess part arrange | positioned outside the part corresponding to a 2nd bonding surface from the 3rd sheet piece F3m bonded by liquid crystal panel P, and the magnitude | size corresponding to a 2nd bonding surface. The optical member (third optical member F13) is formed.

  Here, the “size corresponding to the second bonding surface” is a size not less than the size of the display region P4 and not more than the size of the outer shape (contour shape in plan view) of the liquid crystal panel P, and electric Indicates the size of the area that avoids the functional parts such as the parts mounting part. In the present embodiment, it is the size of the outer shape of the second substrate P2.

  The third optical member F13 is bonded to the other side of the front and back surfaces of the liquid crystal panel P by separating the excess portion of the third sheet piece F3m from the fourth optical member bonding body PA4 by the second cutting device 52, and the liquid crystal The 5th optical member bonding body PA5 formed by bonding the 1st optical member F11 and the 2nd optical member F12 to the surface one side of the panel P is formed. At this time, the 5th optical member bonding body PA5 and the excess part of the 3rd sheet piece F3m which a part (3rd optical member F13) corresponding to a 2nd bonding surface is cut off, and remain in frame shape are isolate | separated. The surplus part cut off from the third sheet piece F3m is peeled off and collected from the liquid crystal panel P by a peeling device (not shown).

  Here, the “part corresponding to the second bonding surface” is a region that is not less than the size of the display region P4 and not more than the size of the outer shape of the liquid crystal panel P, and a functional part such as an electrical component mounting portion. Indicates the area that was avoided. In the present embodiment, the surplus portions are laser-cut along the outer peripheral edge of the liquid crystal panel P on the four sides of the liquid crystal panel P having a rectangular shape in plan view. For example, when the portion corresponding to the second bonding surface is the bonding surface of the CF substrate, there is no portion corresponding to the functional portion, so that the four sides of the liquid crystal panel P are cut along the outer peripheral edge of the liquid crystal panel P. .

  In this embodiment, the 1st cutting device 51 is a 1st sheet | seat along the outer periphery of the bonding surface (1st bonding surface SA1) of liquid crystal panel P and 1st sheet piece F1m which the imaging device 93 imaged. Each of the piece F1m and the second sheet piece F2m is cut. The 2nd cutting device 52 cut | disconnects the 3rd sheet piece F3m along the outer periphery of the bonding surface (2nd bonding surface) of liquid crystal panel P and the 3rd sheet piece F3m which the imaging device 93 imaged.

  As described above, according to the film bonding system of the present embodiment, after the sheet piece FXm larger than the display region P4 is bonded to the liquid crystal panel P, the liquid crystal panel P and the sheet on which the sheet piece FXm is bonded. By detecting the outer peripheral edge of the bonding surface with the piece FXm and cutting off the surplus portion arranged outside the portion corresponding to the bonding surface from the sheet piece FXm bonded to the liquid crystal panel P, the bonding surface The corresponding size optical member F1X can be formed on the surface of the liquid crystal panel P. As a result, the optical member F1X can be accurately provided up to the display area P4, and the frame area G outside the display area P4 can be narrowed to enlarge the display area and downsize the device.

  In addition, in the film bonding system of the said embodiment, the outer periphery of the bonding surface is detected for every some liquid crystal panel P using a detection apparatus, and it pastes for every liquid crystal panel P based on the detected outer periphery. You may set the cutting position of the joined sheet piece. Thereby, since the optical member of a desired size can be cut off regardless of the individual difference of the size of the liquid crystal panel P or the sheet piece, the quality variation due to the individual difference of the size of the liquid crystal panel P or the sheet piece is eliminated, The frame portion around the display area can be reduced to enlarge the display area and downsize the device.

  While preferred embodiments of the present invention have been described and described above, it should be understood that these are exemplary of the invention and are not to be considered as limiting. Additions, omissions, substitutions, and other changes can be made without departing from the scope of the invention. Accordingly, the invention is not to be seen as limited by the foregoing description, but is limited by the scope of the claims.

DESCRIPTION OF SYMBOLS 1,2 ... Film bonding system (production system of an optical display device), 13 ... 1st bonding apparatus (bonding apparatus), 15 ... 2nd bonding apparatus (bonding apparatus), 18 ... 3rd bonding apparatus (Bonding device), 25 ... control device, 31a ... unwinding part, 31b ... cutting device (cutting part), 31c ... knife edge (peeling part), 31e ... separator peeling position (peeling position), 32 ... bonding head , 32a ... holding surface, 41 ... bonding stage (bonding position), 42 ... driving device, 44 ... moving device, 51 ... first cutting device, 52 ... second cutting device, 91 ... first detecting device (detecting device) ), 92... Second detection device (detection device), P... Liquid crystal panel (optical display component), P4... Display area, F1... First optical member sheet (optical member sheet), F2. Member sheet), F3 ... third optical member sheet (optical) Material sheet), FX ... optical member sheet, F3a ... separator sheet, F11 ... first optical member (optical member), F12 ... second optical member (optical member), F13 ... third optical member (optical member), F1X ... Optical member, R1 ... Raw fabric roll, SA1 ... First bonding surface (bonding surface), ED ... Edge of first bonding surface (outer periphery of bonding surface)

Claims (18)

In the production system of an optical display device formed by bonding an optical member to an optical display component,
For the plurality of optical display components conveyed on a line, the optical member sheet is placed in the display region while a belt-shaped optical member sheet having a width corresponding to the display region of the optical display component is unwound from the original roll. After cutting the corresponding length into the optical member, the optical device is provided with a bonding device that bonds the optical member to the optical display component,
The bonding device is
A bonding head for bonding the optical member held on the holding surface having an arc shape to the optical display component;
At the time of bonding of the optical member, a moving device that relatively moves the bonding head and the optical display component,
An optical device comprising: a driving device configured to drive the laminating head that presses the optical member against the optical display component at the time of laminating the optical member so as to tilt along the curvature of the holding surface; Display device production system. A control device for controlling the moving device and the driving device;
The driving device and the moving device are configured so that the control device generates a torque along a feeding direction of the optical member from the holding surface of the bonding head tilting to the optical display component during the bonding. The system for producing an optical display device according to claim 1, wherein:   The said drive device aligns the relative position of the said optical member with respect to the said bonding head to a predetermined | prescribed reference position, The production system of the optical display device of Claim 1 or 2 characterized by the above-mentioned.   The laminating apparatus includes: an unwinding unit that unwinds the optical member sheet together with a separator sheet from the raw fabric roll; a cut unit that cuts the optical member sheet leaving the separator sheet to form the optical member; The optical display device production system according to any one of claims 1 to 3, further comprising a peeling portion that peels an optical member from the separator sheet.   The said moving apparatus moves the said bonding head between the peeling position from the said separator sheet of the said optical member, and the bonding position to the said optical display component of the said optical member, It is characterized by the above-mentioned. The production system of the optical display device described in 1. The peeling portion peels the optical member from the separator sheet with the bonding surface with the optical display component facing down,
In the state where the bonding head holds and holds the upper surface opposite to the bonding surface on the holding surface and the bonding surface faces downward, the moving head has the peeling position and the bonding position. The system for producing an optical display device according to claim 5, wherein the optical display device is moved between the two. An optical display device production system in which an optical member is bonded to an optical display component,
While the belt-shaped optical member sheet having a width wider than the length of either one of the long side and the short side of the display area of the optical display component is unwound from the original roll, the optical member sheet is removed from the display area. After cutting with a length longer than the length of either the other of the long side and the short side into a sheet piece, a bonding apparatus that bonds the sheet piece to the optical display component,
A cutting device that cuts off an excess portion disposed outside the portion facing the display area from the sheet piece bonded to the optical display component, and forms the optical member having a size corresponding to the display area; With
The bonding device is
A bonding head for bonding the sheet piece, which is bonded and held on an arc-shaped holding surface, to the optical display component;
At the time of bonding the sheet piece, a moving device that relatively moves the bonding head and the optical display component,
An optical device comprising: a driving device configured to drive the laminating head that presses the sheet piece against the optical display component at the time of laminating the sheet piece along the curvature of the holding surface; Display device production system. A control device for controlling the moving device and the driving device;
The driving device and the moving device are configured so that the control device generates a torque along a feeding direction of the sheet piece from the holding surface of the bonding head tilting to the optical display component at the time of the bonding. The system for producing an optical display device according to claim 7, wherein:   The laminating apparatus includes an unwinding unit that unwinds the optical member sheet together with a separator sheet from the raw fabric roll, a cut unit that cuts the optical member sheet leaving the separator sheet to form the sheet piece, The system for producing an optical display device according to claim 7, further comprising a peeling portion that peels the sheet piece from the separator sheet. In the production method of an optical display device formed by bonding an optical member to an optical display component,
For the plurality of optical display components conveyed on a line, the optical member sheet is placed in the display region while a belt-shaped optical member sheet having a width corresponding to the display region of the optical display component is unwound from the original roll. After cutting the corresponding length to make the optical member, including a bonding step of bonding the optical member to the optical display component,
The bonding step is
A holding step of sticking and holding the optical member on an arc-shaped holding surface in the bonding head;
A movement step of relatively moving the bonding head holding the optical member on the holding surface and the optical display component;
And a driving step of driving the bonding head that presses the optical member against the optical display component so as to tilt along the curvature of the holding surface.   In the driving step and the moving step, by pressing the optical member against the optical display component and relatively moving the bonding head and the optical display component, the holding surface and the optical display component are bonded at the time of bonding. The method for producing an optical display device according to claim 10, wherein torque is generated along a feeding direction of the optical member. In the production method of an optical display device formed by bonding an optical member to an optical display component,
While the belt-shaped optical member sheet having a width wider than the length of either one of the long side and the short side of the display area of the optical display component is unwound from the original roll, the optical member sheet is removed from the display area. After cutting into a sheet piece that is longer than the length of the other side of the long side and the short side, a bonding step of bonding the sheet piece to the optical display component,
A cutting step of cutting off an excess portion disposed outside a portion facing the display area from the sheet piece bonded to the optical display component, and forming the optical member having a size corresponding to the display area. Including
The bonding step is
A holding step of holding and holding the sheet piece on an arc-shaped holding surface;
A movement step of relatively moving the bonding head holding the sheet piece on the holding surface and the optical display component;
And a driving step of driving the bonding head for pressing the sheet piece against the optical display component so as to tilt along the curvature of the holding surface.   In the driving step and the moving step, by pressing the sheet piece against the optical display component and relatively moving the bonding head and the optical display component, from the holding surface to the optical display component at the time of bonding. The method for producing an optical display device according to claim 12, wherein torque is generated along a feeding direction of the sheet piece. An optical display device production system in which an optical member is bonded to an optical display component,
While the belt-shaped optical member sheet having a width wider than the length of either one of the long side and the short side of the display area of the optical display component is unwound from the original roll, the optical member sheet is removed from the display area. After cutting with a length longer than the length of either the other of the long side and the short side into a sheet piece, a bonding apparatus that bonds the sheet piece to the optical display component,
A detection device for detecting an outer peripheral edge of a bonding surface of the optical display component and the sheet piece on which the sheet piece is bonded;
A cutting device that cuts off an excess portion disposed outside a portion corresponding to the bonding surface from the sheet piece bonded to the optical display component, and forms the optical member having a size corresponding to the bonding surface. And comprising
The bonding device is
A bonding head for bonding the sheet piece, which is bonded and held on an arc-shaped holding surface, to the optical display component;
At the time of bonding the sheet piece, a moving device that relatively moves the bonding head and the optical display component,
A driving device for driving the laminating head to press the sheet piece against the optical display component at the time of laminating the sheet piece along the curvature of the holding surface;
The said cutting device cuts the said sheet piece along the outer periphery of the said bonding surface of the said optical display component and the said sheet piece which the said detection apparatus detected, The production system of the optical display device characterized by the above-mentioned. A control device for controlling the moving device and the driving device;
The driving device and the moving device are configured so that the control device generates a torque along a feeding direction of the sheet piece from the holding surface of the bonding head tilting to the optical display component at the time of the bonding. The optical display device production system according to claim 14, wherein the optical display device is controlled.   The laminating apparatus includes an unwinding unit that unwinds the optical member sheet together with a separator sheet from the raw fabric roll, a cut unit that cuts the optical member sheet leaving the separator sheet to form the sheet piece, The optical display device production system according to claim 14, further comprising: a peeling unit that peels the sheet piece from the separator sheet. In the production method of an optical display device formed by bonding an optical member to an optical display component,
While the belt-shaped optical member sheet having a width wider than the length of either one of the long side and the short side of the display area of the optical display component is unwound from the original roll, the optical member sheet is removed from the display area. After cutting into a sheet piece that is longer than the length of the other side of the long side and the short side, a bonding step of bonding the sheet piece to the optical display component,
A detection step of detecting an outer peripheral edge of a bonding surface of the optical display component and the sheet piece to which the sheet piece is bonded;
The cutting process which cuts off the surplus part arranged outside the portion corresponding to the pasting surface from the sheet piece pasted on the optical display part, and forms the optical member of the size corresponding to the pasting surface Including
The bonding step is
A holding step of holding and holding the sheet piece on an arc-shaped holding surface;
A movement step of relatively moving the bonding head holding the sheet piece on the holding surface and the optical display component;
A driving step of driving the laminating head that presses the sheet piece against the optical display component to tilt along the curvature of the holding surface;
In the cutting step, the sheet piece is cut along an outer peripheral edge of the bonding surface between the optical display component and the sheet piece detected in the detection step.   In the driving step and the moving step, by pressing the sheet piece against the optical display component and relatively moving the bonding head and the optical display component, from the holding surface to the optical display component at the time of bonding. The method for producing an optical display device according to claim 17, wherein torque is generated along a feeding direction of the sheet piece.

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