JP2014157344A - Production system of optical display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a production system of an optical display device which allows an increase in display area and reduction in system size by reducing a frame part of a display region periphery.SOLUTION: A lamination apparatus comprises: a winding-off part for winding off an optical member sheet together with a separator sheet; a cutting part for cutting the optical member sheet while the separator sheet being remained so that the cut optical member sheet serves as optical member; a peeling part for peeling off the optical member from the separator sheet; a lamination drum for winding the optical member peeled off from the separator sheet on a holding surface and holding it thereon, and pressing the optical member held on the holding surface against an optical display component and rotating the optical member, thereby laminating the optical member onto the optical display component; a suction table arranged immediately below the peeling part and sucking and holding the optical display component; a first movement device for relatively moving the suction table in a direction orthogonal to rotation axis of the lamination drum with the rotation of the lamination drum; and a second movement device for straight reciprocating the lamination drum between the peeling part and the optical display component.

Description

  The present invention relates to an optical display device production system.

  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 such circumstances, and provides an optical display device production system capable of enlarging the display area and reducing the size of the device by reducing the frame portion around the display area. For the purpose.

In order to achieve the above object, the present invention employs the following means.
(1) That is, the production system for an optical display device according to the first aspect of the present invention is a production system for an optical display device in which an optical member is bonded to an optical display component. For the optical display component, the belt-shaped optical member sheet having a width corresponding to the display area of the optical display component is unwound from the original roll, and the optical member sheet is cut to a length corresponding to the display area. After the optical member, the optical device includes a bonding apparatus that bonds the optical member to the optical display component, and the bonding apparatus unwinds the optical member sheet from the raw roll together with a separator sheet; The optical member sheet is cut to leave the separator sheet to form the optical member, and the optical member is peeled off from the separator sheet. And the optical member peeled off from the separator sheet is wound around and held on a holding surface, and the optical member held on the holding surface is pressed against the optical display component and rotated to rotate the optical member. The adhering drum for adhering to the optical display component, the adsorbing table that is arranged immediately below the peeling part and adsorbs and holds the optical display member, and the adsorbing table as the adhering drum rotates. A first moving device that relatively moves in a direction orthogonal to the rotation axis of the bonding drum; a second moving device that linearly reciprocates the bonding drum between the peeling portion and the optical display component; It is characterized by including.

  (2) In the production system for an optical display device according to (1), the bonding apparatus includes: an imaging apparatus that captures an image of an edge of the optical member held on the holding surface; and the imaging apparatus. A rotating device that rotates the suction table in a horizontal plane based on an imaging result, and adjusts a relative bonding position between the optical display component held by the suction table and the optical member held by the bonding drum; , May be further included.

  (3) In the optical display device production system according to (2) above, the imaging device may be arranged at positions corresponding to four corners of the optical member having a rectangular shape.

  (4) In the production system for an optical display device according to any one of (1) to (3), the bonding apparatus is opposed to the peeling portion with the separator sheet and the optical member interposed therebetween. And a support member having a support surface that supports the optical member; a first position where the support surface is in contact with the optical member; and a support surface that is spaced apart from the optical member. And a third moving device that moves between the two positions.

  (5) The optical display device production system according to the second aspect of the present invention is an optical display device production system in which an optical member is bonded to an optical display component. While unwinding the belt-shaped optical member sheet having a width wider than the length of either one of the long side and the short side from the original roll, the optical member sheet is either the long side or the short side of the display region. After cutting to a length longer than the length of the other side to make a sheet piece, a bonding apparatus for bonding the sheet piece to the optical display component, and the sheet piece bonded to the optical display component A cutting device that cuts off an excess portion disposed outside the portion facing the display region and forms the optical member having a size corresponding to the display region, and the bonding device includes the optical member sheet. The original An unwinding section for unwinding together with the separator sheet from the roll; a cutting section for cutting the optical member sheet leaving the separator sheet to form the sheet piece; a peeling section for separating the sheet piece from the separator sheet; The sheet piece peeled off from the separator sheet is wound and held on a holding surface, and the sheet piece held on the holding surface is pressed against the optical display component and rotated to rotate the sheet piece. A bonding drum that is bonded to a component, a suction table that is disposed immediately below the peeling portion and that holds the optical display member by suction, and the suction table that is attached to the bonding drum as the bonding drum rotates. A first moving device that relatively moves in a direction perpendicular to the rotation axis of the sheet, and the bonding drum between the peeling portion and the optical display component And a second moving device that linearly reciprocates.

  (6) In the production system for an optical display device according to (5), the laminating apparatus includes an imaging apparatus that captures an image of an edge of the sheet piece held on the holding surface, and the imaging apparatus. A rotating device that rotates the suction table in a horizontal plane based on an imaging result and adjusts a relative bonding position between the optical display component held by the suction table and the sheet piece held by the bonding drum; , May be further included.

  (7) In the optical display device production system according to (6), the imaging device may be disposed at positions corresponding to four corners of the sheet piece having a rectangular shape.

  (8) In the production system for an optical display device according to any one of (5) to (7), the laminating apparatus is opposed to the peeling portion with the separator sheet and the sheet piece interposed therebetween. And a support member having a support surface for supporting the sheet piece, a first position where the support surface is in contact with the sheet piece, and a first position where the support surface is separated from the sheet piece. And a third moving device that moves between the two positions.

(9) An optical display device production system according to a third aspect of the present invention is an optical display device production system in which an optical member is bonded to an optical display component, and the display area of the optical display component While unwinding the belt-shaped optical member sheet having a width wider than the length of either one of the long side and the short side from the original roll, the optical member sheet is either the long side or the short side of the display region. After cutting into a sheet piece that is longer than the length of the other side, a bonding apparatus that bonds the sheet piece to the optical display component, and the optical display component on which the sheet piece is bonded A detection device that detects an outer peripheral edge of the bonding surface with the sheet piece, and a surplus 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 A cutting device for forming the optical member, and the laminating device unwinds the optical member sheet from the raw roll together with the separator sheet, and leaves the separator sheet to the optical member sheet. Cutting the sheet piece into the sheet piece, a peeling part for peeling the sheet piece from the separator sheet, and winding and holding the sheet piece peeled from the separator sheet on the holding surface, and holding the holding The sheet piece held on the surface is pressed against the optical display component and rotated, thereby being arranged immediately below the bonding drum for bonding the sheet piece to the optical display component, and the optical display. An adsorption table that adsorbs and holds a member, and the adsorption table is orthogonal to the rotation axis of the bonding drum as the bonding drum rotates. And a second moving device that linearly reciprocates the bonding drum between the peeling portion and the optical display component, and the cutting device includes: The sheet piece is cut along an outer peripheral edge of the bonding surface between the optical display component and the sheet piece detected by a detection device.
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.

  (10) In the production system for an optical display device according to (9), the pasting device includes an imaging device that captures an image of an edge of the sheet piece held on the holding surface, and the imaging device. A rotating device that rotates the suction table in a horizontal plane based on an imaging result and adjusts a relative bonding position between the optical display component held by the suction table and the sheet piece held by the bonding drum; , May be further included.

  (11) In the optical display device production system according to (10) above, the imaging device may be arranged at positions corresponding to four corners of the sheet piece having a rectangular shape.

  (12) In the production system for an optical display device according to any one of (9) to (11) above, the laminating apparatus is opposed to the peeling portion with the separator sheet and the sheet piece interposed therebetween. And a support member having a support surface for supporting the sheet piece, a first position where the support surface is in contact with the sheet piece, and a first position where the support surface is separated from the sheet piece. And a third moving device that moves between the two positions.

  ADVANTAGE OF THE INVENTION According to this invention, the production system of the optical display device which can aim at expansion of a display area and size reduction of an apparatus can be provided by reducing the frame part around a display area.

It is a schematic block diagram of the film bonding system which concerns on 1st embodiment. It is a top view of a liquid crystal panel. It is AA sectional drawing of FIG. It is sectional drawing of the optical member sheet | seat which concerns on 1st embodiment. It is a top view of the film bonding system which concerns on 1st embodiment. It is a side schematic diagram of the 1st pasting device. (A)-(e) It is a figure for demonstrating the bonding operation | movement by a 1st bonding apparatus. It is a figure for demonstrating the adjustment of the bonding position by a 1st bonding apparatus. It is a schematic block diagram of the film bonding system which concerns on 2nd embodiment. It is a top view of the film bonding system which concerns on 2nd embodiment. (A), (b) It is a figure which shows an example of the determination method of the bonding position of the sheet piece with respect to 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 one optical layer, or may have 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. 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 part 31a which feeds out along a longitudinal direction, the cutting device 31b (cut part) which performs a half cut to the 1st optical member sheet | seat F1 unwound from the original fabric roll R1, and the 1st optical member sheet which gave the half cut Knife edge 31c (peeling portion) for separating F1 from separator sheet F3a by winding F1 at an acute angle, and winding for holding separator roll R2 for winding separator sheet F3a that has become independent through knife edge 31c Part 31d.

  The sheet conveying device 31 includes a plurality of guide rollers (for example, two guide rollers 311 and 312 in the present embodiment) that wind the first optical member sheet F1 along a predetermined conveyance path. 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 positioned above the first optical member sheet F1 conveyed substantially horizontally from the right side to the left 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 upward. Immediately below the tip of the knife edge 31c is a separator peeling position 31e, and a holding surface 32a of a bonding drum 32 (described later) is in contact with the tip of the knife edge 31c from below, thereby protecting the surface of the sheet piece of the bonding sheet F5. The film F4a (surface opposite to the bonding surface) is bonded to the holding surface 32a of the bonding drum 32.

  The bonding unit 40 includes a bonding drum 32, a bonding stage 41 (adsorption table), a support member 39, a second detection camera 35 (imaging device), a first moving device 42, and a second moving device 43. And a third moving device 44 and a rotating device 45. The first moving device 42, the second moving device 43, the third moving device 44, and the rotating device 45 are electrically connected to the control device 25. The control device 25 can independently control the driving of the first moving device 42, the second moving device 43, the third moving device 44, and the rotating device 45.

  The bonding drum 32 winds and holds the bonding sheet F5 peeled from the separator sheet F3a on the holding surface 32a, and presses and rotates the bonding sheet F5 held on the holding surface 32a against the liquid crystal panel P. Thus, the bonding sheet F5 is bonded to the liquid crystal panel P. 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 bonding stage 41 is disposed immediately below the knife edge 31c, and sucks and holds the liquid crystal panel P at the time of bonding.

  The support member 39 is disposed at a position facing the knife edge 31c across the separator sheet F3a and the bonding sheet F5, and has a support surface 39a that supports the bonding sheet F5.

  The second detection camera 35 captures an image of the edge of the bonding sheet F5 held on the holding surface 32a. The 2nd detection camera 35 is arrange | positioned in the position corresponding to the four corner | angular parts of the bonding sheet | seat F5 which has a rectangular shape. In FIG. 6, it is assumed that two second detection cameras 35 out of the four second detection cameras 35 are arranged so as to overlap in a side view, and two second detection cameras 35 out of the four second detection cameras 35 are arranged. It is shown.

  The first moving device 42 relatively moves the bonding stage 41 in a direction orthogonal to the rotation axis of the bonding drum 32 as the bonding drum 32 rotates. For example, the first moving device 42 moves the bonding stage 41 in the right direction on the paper surface when the bonding drum 32 rotates counterclockwise (counterclockwise). The first moving device 42 can move the bonding stage 41 in a direction orthogonal to the rotation axis of the bonding drum 32 and a direction parallel to the rotation axis of the bonding drum 32.

  The second moving device 43 reciprocates the bonding drum 32 linearly between the knife edge 31c and the liquid crystal panel P. For example, the second moving device 43 includes a guide rail that extends along the vertical direction of the paper, a power unit such as an actuator, and an arm unit that can be moved along the guide rail by the power unit. The bonding drum 32 is attached to the tip of the arm part.

  The third moving device 44 moves the support member 39 between a first position Hp1 where the support surface 39a is in contact with the bonding sheet F5 and a second position Hp2 where the support surface 39a is separated from the bonding sheet F5. . For example, the third moving device 44 includes a guide rail extending along the vertical direction of the paper, a power unit such as an actuator, and an arm unit movable along the guide rail by the power unit. The support member 39 is attached to the tip of the arm portion.

  The rotating device 45 rotates the bonding stage 41 in a horizontal plane based on the imaging result of the second detection camera 35, and the bonding sheet held by the liquid crystal panel P held by the bonding stage 41 and the bonding drum 32. Adjust the relative bonding position with F5. For example, the rotation device 45 includes a motor having a rotation axis parallel to the normal direction of the upper surface of the bonding stage 41 and a transmission mechanism that transmits the rotational force of the motor to the bonding stage 41. The bonding stage 41 is attached to the transmission mechanism.

  The 2nd moving apparatus 43 moves the bonding drum 32 to the front-end | tip part of the knife edge 31c which is a peeling position of the separator sheet F3a. The second moving device 43 raises the bonding drum 32 from below the separator peeling position 31e, thereby pressing the holding surface 32a against the tip of the knife edge 31c from below, and the bonding sheet F5 at the separator peeling position 31e. The tip is attached to 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 part is provided above 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.

  FIGS. 7A to 7E are explanatory diagrams of a bonding operation by the first bonding apparatus 13.

  As shown to Fig.7 (a), the control apparatus 25 raises the bonding drum 32 by the 2nd moving apparatus 43 (refer FIG. 6), and sticks the front-end | tip part of the bonding sheet | seat F5 to the holding surface 32a. . Then, by the rotation of the bonding drum 32, the bonding sheet F5 is wound and held on the holding surface 32a. In this state, the sheet conveying device 31 (see FIG. 6) performs the feeding operation of the bonding sheet F5.

  Thus, the whole sheet piece of the bonding sheet F5 is bonded to the holding surface 32a by rotating the bonding drum 32 while feeding the bonding sheet F5.

  For example, the rotation driving of the bonding drum 32 and the feeding operation of the bonding sheet F5 by the sheet conveying device 31 are performed in synchronization. Thereby, it can suppress that friction arises between the holding surface 32a and the bonding sheet | seat F5. Therefore, the bonding sheet F5 can be stuck to a predetermined position of the holding surface 32a while suppressing a shift.

  After the bonding sheet F5 is wound and held on the holding surface 32a of the bonding drum 32, the control device 25 moves the support member 39 to the first position Hp1 by the third moving device 44, thereby supporting the surface. 39a is made to support the rear-end part of the bonding sheet | seat F5.

  As shown in FIG. 7 (b), the bonding drum 32 continues to rotate after the entire bonding sheet F5 is bonded to the holding surface 32a, and when the bonding sheet F5 is bonded to the liquid crystal panel P. The front end of the bonding sheet F5 and the front end of the liquid crystal panel P are matched. In other words, the front end of the bonding sheet F5 and the front end of the liquid crystal panel P are overlapped when viewed from the normal direction of the upper surface of the bonding stage 41. In this state, the second moving device 43 (see FIG. 6) lowers the bonding drum 32 below the separator peeling position 31e.

  In addition, the bonding sheet | seat F5 by which the defect mark was detected as mentioned above is not pasted on liquid crystal panel P, after sticking to the bonding drum 32, and the disposal 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 drum 32 to which the bonding sheet F5 is bonded moves from the separator peeling position 31e onto the bonding stage 41, the four bonding sheets F5 that are bonded and held on the holding surface 32a. The corners are respectively imaged by the second detection camera 35 as an imaging device. Detection information of each second detection camera 35 is sent to the control device 25. The control apparatus 25 confirms the arrangement position of the bonding sheet | seat F5 with respect to the bonding drum 32 based on the imaging data of each 2nd detection camera 35, for example. The control device 25 is parallel to the rotation direction of the bonding drum 32 and the direction perpendicular to the rotation axis of the bonding drum 32 by the first moving device 42 based on the imaging data of each second detection camera 35. The sheet is held in the bonding drum 32 and the liquid crystal panel P held in the bonding stage 41 by moving in each direction or rotating the bonding stage 41 in a horizontal plane by the rotating device 45. Alignment is performed to adjust the relative bonding position with F5.

FIG. 8 is a diagram for explaining the adjustment of the bonding position by the first bonding apparatus 13.
In FIG. 8, the right figure is an explanatory view of the arrangement position of the bonding sheet F5 adhered to the bonding head 32, and the left figure is the arrangement position of the liquid crystal panel P held by the bonding stage 41. The lower figure is explanatory drawing of the adjustment amount of the bonding stage 41. FIG.
In FIG. 8, for convenience, one second detection camera 35 among the four second detection cameras 35 is shown.

  As shown in the right side of FIG. 8, the corner portion of the bonding sheet F <b> 5 bonded and held on the holding surface 32 s by the second detection camera 35 is imaged.

  In the following description, the bonding drum 32 between the detection positions (the optical axis extension positions of the two second detection cameras 35) by the two second detection cameras 35 arranged along the rotation direction of the bonding drum 32. The distance along the circumferential direction is referred to as an inter-camera distance Lc. The inter-camera distance Lc is substantially equal to the length of the sheet piece of the bonding sheet F5 described above.

  For example, when the bonding sheet F5 moves by the inter-camera distance Lc with the rotation of the bonding drum 32, the position of the corner of the bonding sheet F5 moves from the start point Ep1 to the end point Ep2. Detection information of the second detection camera 35 (position information of the start point Ep1 and the end point Ep2) is sent to the control device 25. As shown in the lower part of FIG. 8, the control device 25 has a distance Le between the camera distance Lc and a start point Ep1 and an end point Ep2 in a direction parallel to the rotation axis of the bonding drum 32 (hereinafter, start point / end point deviation). And the correction angle α (tan α = Le / Lc) is calculated.

  As shown on the left side of FIG. 8, a corner of the liquid crystal panel P held by the bonding stage 41 is imaged by a third detection camera 36 described later. For example, a mark Pm (for example, three marks Pm1, Pm2, and Pm3 in the present embodiment) is attached to each corner of the liquid crystal panel P. Detection information of the third detection camera 36 (position information of the first mark Pm1, the second mark Pm2, and the third mark Pm3) is sent to the control device 25. The control device 25 drives and controls the first moving device 42 based on the detection information of the detection camera 36, and aligns the liquid crystal panel P held on the bonding stage 41. The control device 25 drives and controls the rotation device 45 based on the correction angle α, and rotates the bonding stage 41 by an angle α in the horizontal plane. Thereby, alignment of liquid crystal panel P with respect to the bonding drum 32 is performed.

  As shown in FIG. 7C, the control device 25 moves the bonding drum 32 to a predetermined position above the bonding stage 41. The first moving device 42 and the rotating device 45 have, for example, 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. The bonding drum 32 and the bonding stage 41 are aligned so as to overlap in a plane.

  At the time of bonding, the control device 25 lowers the bonding drum 32 by the second moving device 43, so that the front end portion of the bonding sheet F5 bonded to the holding surface 32a is placed on the end portion of the liquid crystal panel P from above. The state is pressed. The second moving device 43 lowers the bonding drum 32 so that the bonding sheet F5 is pressed by the liquid crystal panel P. At this time, the bonding drum 32 bonds the bonding sheet F5 to the liquid crystal panel P by pressing and rotating the bonding sheet F5 held on the holding surface 32a to the liquid crystal panel P.

  As shown in FIG.7 (d), the control apparatus 25 is the direction orthogonal to the rotating shaft of the bonding drum 32 with the rotation of the bonding drum 32 by the 1st moving apparatus 42 at the time of bonding. Move relative to. In this embodiment, the bonding drum 32 rotates counterclockwise, and the bonding stage 41 is moved rightward on the paper surface by the first moving device 42.

  For example, the rotation drive of the bonding drum 32 and the movement operation of the liquid crystal panel P by the bonding stage 41 are performed in synchronization. Thereby, it can suppress that friction arises between the bonding sheet | seat F5 and liquid crystal panel P. FIG. Therefore, the bonding sheet F5 can be bonded to the liquid crystal panel P while suppressing the deviation.

  As shown in FIG.7 (e), the control apparatus 25 raises the bonding drum 32 toward the front-end | tip part of the knife edge 31c by the 2nd moving apparatus 43 after bonding. At this time, the control device 25 causes the third moving device 44 to move the support member 39 to the second position Hp2 to separate the support surface 39a from the rear end portion of the bonding sheet F5. The movement of the support member 39 to the second position Hp2 by the third moving device 44 is not limited to being performed at the time of FIG. 7 (e), and any of FIGS. 7 (b) to 7 (d). It may be done at that time.

  Hereinafter, similarly, the bonding process of the bonding sheet F5 to the liquid crystal panel P is repeatedly performed by repeatedly performing the operations of FIGS. 7 (a) to 7 (b).

  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. 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 drum 32 in each bonding position is performed.

  By bonding the bonding sheet F5 from the bonded bonding drum 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 peeled from the separator sheet F3a are wound and held on a holding surface 32a. By pressing and rotating the optical member F1X held on the holding surface 32a against the liquid crystal panel P, a bonding drum 32 for bonding the optical member F1X to the liquid crystal panel P and directly below the knife edge 31c. Relative movement of the bonding stage 41 arranged and adsorbing and holding the liquid crystal panel P in a direction orthogonal to the rotation axis of the bonding drum 32 as the bonding drum 32 rotates. The first moving device 42 for causing the bonding drum 32 to move directly between the knife edge 31c and the liquid crystal panel P. A second moving device 43 for reciprocating the manner is intended to include. Furthermore, the said bonding apparatuses 13, 15, and 18 are arrange | positioned in the position facing the said knife edge 31c on both sides of the said separator sheet F3a and the said optical member F1X, and have the support surface 39a which supports the said optical member F1X. The support member 39 and the support member 39 are moved between a first position Hp1 where the support surface 39a is in contact with the optical member F1X and a second position Hp2 where the support surface 39a is separated from the optical member F1X. Based on the imaging result of the second detection camera 35, the second detection camera 35 that captures an image of the edge of the optical member F1X held on the holding surface 32a The stage 41 is rotated in a horizontal plane, the liquid crystal panel P held by the bonding stage 41 and the optical member F1X held by the bonding drum 32 A rotating device 45 for adjusting the relative lamination position, is intended to include.

According to this configuration, the belt-shaped optical member sheet FX having a width corresponding to the display region P4 is cut into a predetermined length to form the optical member F1X, and the optical member F1X is wound around the holding surface 32a of the bonding drum 32. While holding, the optical member F1X is pressed against the liquid crystal panel P and bonded to rotate, thereby suppressing the dimensional variation and bonding variation of the optical member F1X and reducing the frame portion G around the display area P4 for display. The area can be expanded and the equipment can be downsized.
Moreover, since it is the structure which affixes on the liquid crystal panel P, after transferring the optical member F1X to the bonding drum 32, positioning of the bonding drum 32 and the liquid crystal panel P can be performed accurately. Therefore, the bonding accuracy between the optical member F1X and the liquid crystal panel P can be increased. Moreover, holding | maintenance and bonding of the optical member F1X can be performed by rotating the bonding drum 32 moving up and down. Therefore, it becomes possible to efficiently perform a series of operations from cutting to pasting of the optical member F1X.
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 rotation of the holding surface 32a, and the optical member F1X can be reliably bonded to the liquid crystal panel P by the rotation of the holding surface 32a.

  Moreover, the said film bonding system 1 is based on the detection information of the detection camera 36, while the 1st moving apparatus 42 is drive-controlled, alignment of liquid crystal panel P hold | maintained at the bonding stage 41 is performed, and also correction | amendment. The rotation device 45 is driven and controlled based on the angle α, and the bonding stage 41 is rotated by the angle α in the horizontal plane, whereby the alignment of the liquid crystal panel P with respect to the bonding drum 32 is performed. Therefore, the bonding accuracy between the optical member F1X and the liquid crystal panel P can be increased.

  Moreover, since the said 2nd detection camera 35 is arrange | positioned in the said film bonding system 1 in the position corresponding to four corner | angular parts of the optical member F1X, it sticks with respect to the holding surface 32a of the bonding drum 32 of optical member F1X. The position can be confirmed with high accuracy. Therefore, the bonding accuracy between the optical member F1X and the liquid crystal panel P can be increased.

  Moreover, after the optical member F1X is wound up and held by the holding surface 32a of the bonding drum 32, the film bonding system 1 moves next to the first position Hp1 so that the bonding is performed. The optical member F1X to be wound by the combined drum 32 is supported by the support surface 39a. Therefore, it can suppress that the optical member F1X used as the winding object by the bonding drum 32 next peels. On the other hand, when the support member 39 moves to the second position Hp2, the operation of feeding the bonded sheet F5 by the sheet conveying device 31 becomes possible.

  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 also be suppressed as part of the line, thereby increasing the degree of freedom of system installation. 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 on the bonding drum 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. 9 is a schematic configuration diagram of the film bonding system 2 of the present embodiment. In FIG. 9, 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 drum 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. 9, the film bonding system 2 has long strip-like first, second, and third optical member sheets F1, F2, 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. 10 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 (left end portion in plan view of FIG. 10) from the second transport device 12 as the first rotary initial position 11a. The 1st rotary index 11 makes the position (upper end part of FIG. 10) 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. 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. 10). 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. 10) 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. 10) 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. 10) as the second rotary initial position 16a. The 2nd rotary index 16 makes the position (right end part of FIG. 10) rotated 90 degrees clockwise from the 2nd rotary starting 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. 10) 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 this embodiment, the 2nd rotary index 16 makes the position (left end part of FIG. 10) rotated 90 degrees clockwise from the 2nd cutting position 16d the 2nd 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, the 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 this bonding. While winding and holding the sheet piece (first sheet piece F1m) of the sheet F5 on the holding surface 32a of the bonding drum 32, the sheet piece (first sheet piece F1m) of the bonding sheet F5 is pressed against the liquid crystal panel P. Bonding by rotating.

  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 drum 32 in each bonding position is performed.

  By bonding the bonding sheet F5 (sheet piece FXm) from the aligned bonding drum 32 to the liquid crystal panel P, 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. 9). 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. 11A, 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. 11B, 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.

  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. 11A) 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.
Similarly to the first embodiment, when the sheet piece FXm is bonded, the sheet piece FXm can be held and bonded by rotating the bonding drum 32 in the vertical direction. Therefore, it becomes possible to efficiently perform a series of operations from cutting the sheet piece FXm to bonding.

  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.

  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.

  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. 12 to 14, the second sheet piece F2m 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. 13). 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. 12, 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. 9).

  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. 13 is a schematic diagram of the first detection device 91.
As shown in FIG. 13, 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. And an image pickup device 93 that is arranged in an inwardly inclined posture 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 respectively arranged in the four inspection areas CA (positions corresponding to the four corners of the first 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 with the attitude | 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. 14, 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. 9) acquires the data of the edge ED of the first bonding surface SA1 stored in the storage device 24 (see FIG. 9), and the first optical member F11 is outside the liquid crystal panel P (see FIG. 9). 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. 9 and 10, 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. 13). 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 24 (see FIG. 9).

  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. 9) acquires the edge data of the second bonding surface stored in the storage device 24 (see FIG. 9), 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. Set the cutting position of the joined sheet pieces. 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 portion, 31b ... cutting device (cutting portion), 31c ... knife edge (peeling portion), 32 ... bonding drum, 32a ... holding surface, 35 ... second Detection camera (imaging device), 39 ... support member, 39a ... support surface, 41 ... bonding stage (suction table), 42 ... first moving device, 43 ... second moving device, 44 ... third moving device, 45 ... Rotating device 51 ... first cutting device 52 ... second cutting device 91 ... first detection device (detection 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), 2 ... second optical member sheet (optical member sheet), F3 ... third optical member sheet (optical member sheet), FX ... optical member sheet, F3a ... separator sheet, F11 ... first optical member (optical member), F12 ... 2nd optical member (optical member), F13 ... 3rd optical member (optical member), F1X ... Optical member, R1 ... Original fabric roll, SA1 ... 1st bonding surface (bonding surface), ED ... 1st bonding Edge of surface (outer edge of bonding surface)

Claims (12)

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
An unwinding section for unwinding the optical member sheet together with a separator sheet from the raw roll,
A cut portion that cuts the optical member sheet leaving the separator sheet to form the optical member;
A peeling portion for peeling the optical member from the separator sheet;
The optical member peeled off from the separator sheet is wound and held on a holding surface, and the optical member held on the holding surface is pressed against the optical display component and rotated to rotate the optical member. A bonding drum to be bonded to the display component;
A suction table that is arranged directly below the peeling portion and sucks and holds the optical display member;
A first moving device that relatively moves the suction table in a direction orthogonal to the rotation axis of the bonding drum, along with the rotation of the bonding drum;
A second moving device for linearly reciprocating the bonding drum between the peeling portion and the optical display component;
An optical display device production system comprising: The bonding device is
An imaging device that captures an image of an edge of the optical member held on the holding surface;
Based on the imaging result of the imaging device, the suction table is rotated in a horizontal plane, and the relative bonding position between the optical display component held on the suction table and the optical member held on the bonding drum is adjusted. A rotating device to
The system for producing an optical display device according to claim 1, further comprising:   The optical imaging device production system according to claim 2, wherein the imaging device is disposed at a position corresponding to four corners of the optical member having a rectangular shape. The bonding device is
A support member that is disposed at a position facing the peeling portion across the separator sheet and the optical member, and has a support surface that supports the optical member;
A third moving device for moving the support member between a first position where the support surface is in contact with the optical member and a second position where the support surface is separated from the optical member;
The production system for an optical display device according to any one of claims 1 to 3, further comprising: 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
An unwinding section for unwinding the optical member sheet together with a separator sheet from the raw roll,
A cut portion that cuts the optical member sheet leaving the separator sheet to form the sheet piece;
A peeling portion for peeling the sheet piece from the separator sheet;
The sheet piece peeled off from the separator sheet is wound and held on a holding surface, and the sheet piece held on the holding surface is pressed against the optical display component and rotated to rotate the sheet piece to the optical surface. A bonding drum to be bonded to the display component;
A suction table that is arranged directly below the peeling portion and sucks and holds the optical display member;
A first moving device that relatively moves the suction table in a direction orthogonal to the rotation axis of the bonding drum, along with the rotation of the bonding drum;
A second moving device for linearly reciprocating the bonding drum between the peeling portion and the optical display component;
An optical display device production system comprising: The bonding device is
An imaging device that captures an image of an edge of the sheet piece held on the holding surface;
The suction table is rotated in a horizontal plane based on the imaging result of the imaging device, and the relative bonding position between the optical display component held on the suction table and the sheet piece held on the bonding drum is adjusted. A rotating device to
The optical display device production system according to claim 5, further comprising:   The optical imaging device production system according to claim 6, wherein the imaging device is disposed at a position corresponding to four corners of the sheet piece having a rectangular shape. The bonding device is
A support member that is disposed at a position facing the peeling portion across the separator sheet and the sheet piece and has a support surface that supports the sheet piece;
A third moving device for moving the support member between a first position where the support surface is in contact with the sheet piece and a second position where the support surface is separated from the sheet piece;
The production system for an optical display device according to claim 5, further comprising: 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
An unwinding section for unwinding the optical member sheet together with a separator sheet from the raw roll,
A cut portion that cuts the optical member sheet leaving the separator sheet to form the sheet piece;
A peeling portion for peeling the sheet piece from the separator sheet;
The sheet piece peeled off from the separator sheet is wound and held on a holding surface, and the sheet piece held on the holding surface is pressed against the optical display component and rotated to rotate the sheet piece to the optical surface. A bonding drum to be bonded to the display component;
A suction table that is arranged directly below the peeling portion and sucks and holds the optical display member;
A first moving device that relatively moves the suction table in a direction orthogonal to the rotation axis of the bonding drum, along with the rotation of the bonding drum;
A second moving device for linearly reciprocating the bonding drum between the peeling portion and the optical display component;
Including
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. The bonding device is
An imaging device that captures an image of an edge of the sheet piece held on the holding surface;
The suction table is rotated in a horizontal plane based on the imaging result of the imaging device, and the relative bonding position between the optical display component held on the suction table and the sheet piece held on the bonding drum is adjusted. A rotating device to
The system for producing an optical display device according to claim 9, further comprising:   The production system for an optical display device according to claim 10, wherein the imaging device is disposed at a position corresponding to four corners of the sheet piece having a rectangular shape. The bonding device is
A support member that is disposed at a position facing the peeling portion across the separator sheet and the sheet piece and has a support surface that supports the sheet piece;
A third moving device for moving the support member between a first position where the support surface is in contact with the sheet piece and a second position where the support surface is separated from the sheet piece;
The system for producing an optical display device according to claim 9, further comprising:

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