KR20150005537A - System for producing optical display device - Google Patents

Abstract

A production system (1) for an optical display device, characterized in that a strip-shaped optical member sheet (F) having a width wider than a length of either the long side or the short side of the display area (P4) The sheet piece is taken out from the roll R1 and the optical member sheet is cut to a length longer than the other of the longer side and the shorter side of the display area to obtain a sheet piece FXm, A joining device (13, 17) for joining to a display part; and a surplus part (Y) disposed outside the opposite part of the sheet piece corresponding to the display area from the sheet piece joined to the optical display part, A cutting device (15A, 15B) for forming optical members (F11, F12) having a size corresponding to the display area, a recovery device (15A, 15B) for fixing the excess part and peeling off the optical part 30, 40).

Description

SYSTEM FOR PRODUCING OPTICAL DISPLAY DEVICE

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

The present application claims priority based on Japanese Patent Application No. 2012-090283 filed on April 11, 2012, the contents of which are incorporated herein by reference.

Conventionally, in an optical display device production system such as a liquid crystal display, an optical member such as a polarizing plate bonded to a liquid crystal panel (optical display component) is cut out from a long film into a sheet piece sized to fit the display area of the liquid crystal panel, They may be bundled and bonded to a liquid crystal panel after being conveyed to a separate line (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2003-255132

However, in the above-described conventional constitution, the sheet pieces of the optical member slightly larger than the display area are cut out in consideration of the dimensional deviations of the liquid crystal panel and the sheet member, and the deviation (positional deviation) of the sheet members relative to the liquid crystal panel. Therefore, there is a problem that an extra area (frame part) is formed in the peripheral portion of the display area, which hinders downsizing of the device.

An object of the present invention is to provide a production system of an optical display device capable of reducing the size of a frame area around a display area, thereby enlarging a display area and downsizing the device.

A production system of an optical display device according to an aspect of the present invention is a production system for an optical display device which comprises a step of winding a strip-shaped optical member sheet having a width larger than the length of one of a long side and a short side of a display area of an optical display part, A joining device for joining the sheet piece to the optical display component by cutting the optical member sheet to a length longer than the other of the longer side and the shorter side of the display area to obtain a sheet piece, A cutting device for cutting an excess portion disposed outside the portion of the sheet member opposite to the display region corresponding to the display sheet from the sheet member joined to the component to form an optical member having a size corresponding to the display region, And a recovery device for fixing the excess portion and peeling off the optical member to recover the excess portion. The opposing portion (opposing portion of the display region) corresponding to the display region in the above is an area equal to or smaller than the size of the display region and the size of the outside shape of the optical display component, And the like. That is, in the above, a case where the excess portion is laser cut along the outer periphery of the optical display part is included.

In one aspect of the present invention, the recovery device may recover the surplus portion by peeling the surplus portion from the portion corresponding to the corner portion of the sheet.

According to one aspect of the present invention, there is provided a recovering apparatus comprising: a peeling roll for winding and rotating the surplus portion around an outer circumferential surface; and a peeling roll for picking up the optical display component and separating the long side and the short side of the optical display component from the peeling roll And a suction table for relatively moving the optical display component in a direction orthogonal to the rotation axis of the peeling roll in a state in which the optical display component is tilted obliquely with respect to the rotation axis of the peeling roll.

In one aspect of the present invention, the peeling roll includes a chuck unit for fixing the excess portion, and by rotating with the chuck unit fixed with the chuck unit, It may be wound.

In one aspect of the present invention, the adsorption table may partly peel off the excess portion by relatively displacing the adsorption table downward of the peeling roll while the excess portion is fixed by the chuck unit.

In one aspect of the present invention, the recovery device is configured to nip a part of the excess portion after the adsorption table is relatively displaced downward of the peeling roll, so that the excess portion And a feed roll for feeding the excess portion in the same direction as the winding direction.

In one aspect of the present invention, the adsorption table is arranged so that the long side and the short side of the optical display component are inclined by 45 DEG with respect to the rotation axis of the peeling roll, In a direction orthogonal to the direction in which the light beam is incident.

According to one aspect of the present invention, it is possible to provide an optical display device production system capable of reducing the size of the frame portion around the display region to enlarge the display region and downsize the device.

1 is a schematic configuration diagram of a film bonding system according to a first embodiment of the present invention.
2 is a plan view of a liquid crystal panel as an example of an optical display component.
3 is a sectional view taken along the line AA in Fig.
4 is a sectional view of the optical member sheet.
5 is a schematic configuration diagram of a recovery device according to the first embodiment of the present invention.
6 is a plan view of the recovery device according to the first embodiment of the present invention when the excess portion is peeled and recovered.
FIG. 7A is an explanatory view showing the operation of the recovery apparatus according to the first embodiment of the present invention. FIG.
FIG. 7B is an explanatory view showing the operation of the recovery apparatus according to the first embodiment of the present invention. FIG.
FIG. 8A is an explanatory view showing the operation of the recovery device following FIG. 7B. FIG.
FIG. 8B is an explanatory view showing the operation of the recovery device following FIG. 8A; FIG.
FIG. 8C is an explanatory view showing the operation of the recovery device following FIG. 8B. FIG.
FIG. 9A is an explanatory view showing the operation of the recovery device following FIG. 8C. FIG.
FIG. 9B is an explanatory view showing the operation of the recovery device following FIG. 9A. FIG.
FIG. 9C is an explanatory view showing the operation of the recovery device following FIG. 9B. FIG.
10 is a plan view showing a first modification example when the recovery device peels and collects the excess portion.

Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In the first embodiment of the present invention, as a production system of an optical display device, a film bonding system constituting a part of a production system will be described.

1 is a schematic configuration diagram of a film bonding system 1 according to a first embodiment of the present invention. The film bonding system 1 is a system for bonding a film-like optical member such as a polarizing film, a retardation film, or a brightness enhancement film to a panel-shaped optical display component such as a liquid crystal panel or an organic EL panel, As part of a production system for producing an optical display device including an optical display component and an optical member. In the film bonding system 1, the liquid crystal panel P is used as the optical display component. In Fig. 1, the film joining system 1 is divided into two upper and lower stages.

2 is a plan view of the liquid crystal panel P viewed from the thickness direction of its liquid crystal layer P3. The liquid crystal panel P includes a first substrate P1 having a rectangular shape in plan view, a second substrate P2 having a relatively small rectangular shape disposed to face the first substrate P1, And a liquid crystal layer P3 sealed between the substrate P1 and the second substrate P2. The liquid crystal panel P has a rectangular shape along the outer shape of the first substrate P1 in plan view and has a display region P4 which is an area accommodated inside the outer periphery of the liquid crystal layer P3 in plan view .

3 is a cross-sectional view taken along line A-A in Fig. (See Fig. 1, hereafter referred to as an optical member sheet FX (hereinafter referred to as " optical member sheet FX ") The first and second optical members F11 and F12 (hereinafter collectively referred to as the optical member F1X) are properly bonded to each other. In this embodiment, a first optical member F11 and a second optical member F12 as polarizing films are bonded to both surfaces of the liquid crystal panel P facing the backlight and the surface facing the display surface. The third optical member may be further laminated on the first optical member F11 on the surface of the liquid crystal panel P facing the backlight as the brightness enhancement film.

The first and second optical members F11 and F12 may be formed from the first and second sheet pieces F1m and F2m (hereinafter collectively referred to as sheet pieces FXm) FXm in the display area.

Fig. 4 is a partial cross-sectional view of the optical member sheet FX bonded to the liquid crystal panel P. Fig. The optical member sheet FX includes a film-shaped optical member main body F1a, an adhesive layer F2a provided on one surface (upper surface in FIG. 3, first surface) of the optical member main body F1a, A separator sheet F3a detachably stacked on one surface of the optical member main body F1a through the first surface F2a of the optical member main body F1a and a second surface And a protective film F4a. The optical member main body F1a functions as a polarizing plate and is bonded over the entire area of the display area P4 of the liquid crystal panel P and its peripheral area. Incidentally, hatching of each layer in Fig. 4 is omitted for convenience of illustration.

The optical member main body F1a is bonded to the liquid crystal panel P via the adhesive layer F2a while separating the separator sheet F3a while leaving the adhesive layer F2a on one side thereof. Hereinafter, the portion excluding the separator sheet F3a from the optical member sheet FX is referred to as a bonded sheet F5.

The separator sheet F3a protects the adhesive layer F2a and the optical member main body F1a until separated from the adhesive layer F2a. The surface protective film F4a is bonded to the liquid crystal panel P together with the optical member main body F1a. The surface protection film F4a is disposed on the side opposite to the liquid crystal panel P with respect to the optical member main body F1a to protect the optical member main body F1a. The surface protective film F4a is separated from the optical member main body F1a at a predetermined timing. Further, the optical member sheet FX may not include the surface protective film F4a. Further, the surface protective film F4a may not be separated from the optical member main body F1a.

The optical member main body F1a has a sheet polarizer F6 and a first film F7 bonded to one surface (first surface) of the polarizer F6 with an adhesive or the like, And a second film F8 bonded to the surface (second surface) with an adhesive or the like. The first film F7 and the second film F8 are, for example, protective films for protecting the polarizer F6.

Further, the optical member main body F1a may be a single-layer structure composed of one optical layer or a laminated structure in which a plurality of optical layers are laminated to each other. The optical layer may be a retardation film, a brightness enhancement film, or the like in addition to the polarizer F6. At least one of the first film (F7) and the second film (F8) may be subjected to a surface treatment for obtaining effects such as antiglare treatment including hard coat treatment and anti glare treatment for protecting the outermost surface of the liquid crystal display element have. The optical member main 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 main body F1a through the adhesive layer F2a.

1, the film joining system 1 extends from the upstream side in the conveying direction of the liquid crystal panel P on the right side in the figure to the downstream side in the conveying direction of the liquid crystal panel P on the left side in the figure, And a driving roller conveyor 5 for conveying the sheet P in a horizontal state.

The roller conveyor 5 is divided into an upstream conveyor 6 and a downstream conveyor 7 with the first pivoting device 18 to be described later as a boundary. In the upstream conveyor 6, the liquid crystal panel P is conveyed such that the short side (first side) of the display area P4 is along the conveying direction, while the downstream conveyor 7 conveys the liquid crystal panel P, (The second side longer than the first side) of the display area P4 is conveyed along the conveying direction. A bonding sheet F5 cut to a predetermined length is bonded to the front and back surfaces of the liquid crystal panel P from a strip-shaped optical member sheet FX. The respective parts of the film bonding system 1 are collectively controlled by a control unit (not shown).

The film joining system 1 sucks the liquid crystal panel P conveyed to the feeding end of the front end process and conveys the liquid crystal panel P to the feeding end of the upstream conveyor 6 and aligns (positions) the liquid crystal panel P A first dust collecting device 12 installed on the downstream side of the panel transportation of the first adsorption device 11 and a second dust collecting device 12 installed downstream of the first dust collecting device 12 A first inverting device 14A arranged on the downstream side of the panel conveying than the first joining device 13 and a second inverting device 14A disposed on the downstream side of the first inverting device 14A, A first collecting device 30 arranged on the downstream side of the panel conveying than the first cutting device 15A and a first collecting device 30 arranged on the downstream side of the panel conveying device than the first collecting device 30 18).

The film joining system 1 further includes a second dust collecting device 16 arranged on the downstream side of the panel conveying rather than the carrying end of the downstream conveyor 7 and a second dust collecting device 16 disposed on the downstream side of the panel conveying A second inverting device 14B arranged on the downstream side of the panel conveying than the second joining device 17 and a second inverting device 14B arranged on the downstream side of the panel conveying than the second inverting device 14B, A second recovery device 40 disposed on the downstream side of the panel transporting side of the second cutting device 15B and a second turning device 40 disposed on the downstream side of the panel transportation more than the second recovery device 40, A device 19 and a defect inspection device 21 arranged on the downstream side of the panel conveyance relative to the second pivoting device 19. [

The first adsorption device 11 includes a panel holding portion 11a for holding the liquid crystal panel P and aligning the liquid crystal panel P so as to be movable in the vertical direction and the horizontal direction, And an alignment camera 11b installed to enable alignment of the liquid crystal panel P.

The panel holding portion 11a sucks and holds the liquid crystal panel P conveyed to the output end of the front end process by vacuum adsorption to the adsorption pad 26 of the suction table 25 and in this state the upstream conveyor 6 And when the conveyance is completed, the adsorption state of the liquid crystal panel P is released, and the liquid crystal panel P is conveyed to the conveying end of the upstream conveyor 6.

When the liquid crystal panel P held by the panel holding portion 11a is placed on the upstream conveyor 6, the alignment camera 11b takes an image of the alignment mark and the tip shape of the liquid crystal panel P. [

The image pickup data by the alignment camera 11b is transmitted to the control apparatus and the panel holding section 11a is operated based on the image pickup data to align the liquid crystal panel P with respect to the upstream conveyor 6. [ At this time, the liquid crystal panel P is fixed to the upstream conveyor 6 in a direction perpendicular to the conveying direction, that is, in the width direction of the upstream conveyor 6 and in the turning direction around the vertical axis of the liquid crystal panel P As shown in Fig.

The first dust collecting device 12 is disposed on the upstream side of the panel conveying at the joining position of the first joining device 13 close to the joining position of the first joining device 13, The static electricity is removed and dust collecting is carried out on the lower surface of the substrate P.

The first joining apparatus 13 joins the bonded sheet F5 cut to a predetermined size to the lower surface of the liquid crystal panel P introduced into the joining position.

The first joining apparatus 13 is arranged so that the first optical member sheet F1 is wound in the longitudinal direction of the first optical member sheet F1 while the first optical member sheet F1 is being unwound from the original roll R1 in which the first optical member sheet F1 is wound And a conveying device 22 for conveying the laminated sheet F and a bonded sheet F5 of a predetermined length separated from the first optical member sheet F1 by the conveying device 22 to the liquid crystal panel P And a clamping roll 23 joining the lower surface of the clamping roll 23.

The transport apparatus 22 includes a roll holding portion 22a for transporting the bonded sheet F5 with the separator sheet F3a as a carrier and for feeding the first optical member sheet F1 along its longitudinal direction, A plurality of guide rollers 22b for winding the first optical member sheet F1 to guide the first optical member sheet F1 pulled from the roll R1 along a predetermined conveyance path, A cut portion 22c for performing a half cut in the optical member sheet F1 and a first optical member sheet F1 subjected to a half cut are wound at an acute angle to peel the bonded sheet F5 from the separator sheet F3a A knife edge 22d for feeding the bonding sheet F5 to the bonding position and a winding part 22e for holding the separator roll R2 for winding the separator sheet F3a which is singly made through the knife edge 22d ).

The width of the display region P4 of the liquid crystal panel P (the long side and the short side of the display region P4) in the horizontal direction (the sheet width direction) perpendicular to the conveying direction of the first optical member sheet F1, (Corresponding to the length of one side of the display region P4 in this embodiment).

The roll holding portion 22a positioned at the carry-in end of the transport apparatus 22 and the take-up portion 22e located at the carry-out end of the transport apparatus 22 are driven in synchronization with each other. Thereby, while the roll holding portion 22a feeds the first optical member sheet F1 in its conveying direction, the winding portion 22e winds the separator sheet F3a through the knife edge 22d. Hereinafter, the upstream side of the first optical member sheet F1 (separator sheet F3a) in the conveying direction is referred to as the upstream side of the sheet conveying direction, and the downstream side in the conveying direction is referred to as the sheet conveying downstream side.

Each of the guide rollers 22b changes the advancing direction of the first optical member sheet F1 being conveyed along the conveying path. At least a part of the plurality of guide rollers 22b is operated to adjust the tension of the first optical member sheet F1 being conveyed.

The cut portion 22c is formed so that the length of the display region P4 in the longitudinal direction orthogonal to the width direction of the first optical member sheet F1 Half cut is performed every time the first optical member sheet F1 having a length longer than the length of the display area P4 (corresponding to the shorter side length of the display area P4 in this embodiment) is fed out. In this half cut, a part of the first optical member sheet F1 in the thickness direction is cut across the whole width along the sheet width direction. Thereby, the sheet piece (first sheet piece F1m) of the bonding sheet F5 larger than the display area P4 of the liquid crystal panel P is cut out from the first optical member sheet F1.

The half cut is performed such that the first optical member sheet F1 (the separator sheet F3a) is not broken by the tension acting during the conveyance of the first optical member sheet F1 and the separator sheet F3a is left to be a predetermined thickness , And adjusts the forward / backward position of the cutting edge and forms the infeed until it reaches a position near the interface between the adhesive layer (F2) and the separator sheet (F3a). Alternatively, a laser device may be used instead of the cutting blade.

The first optical member sheet F1 after the half cut has a section where the optical member main body F1a and the surface protective film F4a are cut in the thickness direction over the entire width in the width direction of the first optical member sheet F1 A grain line is formed. The cutting line is formed at intervals having a length equivalent to the short side length of the display region P4 in the longitudinal direction of the strip-shaped first optical member sheet F1, and the first optical member sheet F1 is formed of a plurality of And divided into a plurality of sections in the longitudinal direction by the section line. Each of the partition portions sandwiched between the pair of cut lines adjacent to each other in the longitudinal direction of the first optical member sheet F1 is divided into one sheet piece (first sheet piece F1m) in the bonded sheet F5 do.

The knife edge 22d is disposed below the upstream conveyor 6 and extends over at least its entire width in the width direction of the first optical member sheet F1. The knife edge 22d is wound with the separator sheet F3a side of the first optical member sheet F1 after the half cut folded and connected.

The first optical member sheet F1 is bent at an acute angle at the tip end of the knife edge 22d to peel the separator sheet F3a from the first sheet piece F1m when the advancing direction is changed. The tip end portion of the knife edge 22d is disposed close to the upstream side of the panel conveyance of the clamping roll 23 and the first sheet piece F1m peeled off from the separator sheet F3a by the knife edge 22d, Is introduced between the pair of joining rollers 23a and 23a of the clamping roll 23 while overlapping the lower surface of the liquid crystal panel P conveyed by the conveyor 6. [

The tightening rolls 23 have a pair of joining rollers 23a and 23a arranged so that their axial directions are parallel to each other. A predetermined gap is formed between the pair of joining rollers 23a and 23a, and the position of this gap becomes the joining position of the first joining apparatus 13. [ The liquid crystal panel P and the first sheet piece F1m are superimposed and introduced into the gap between the pair of joining rollers 23a and 23a and the liquid crystal panel P and the first sheet piece Fl meet each other And is fed to the downstream side of the panel conveying while being clamped by the joining roller 23a. Thereby, the first sheet member F1m is integrally joined to the lower surface of the liquid crystal panel P to obtain the first optical member joined body PA1.

The reversing device 14A conveys the first optical member joined body PA1 to the cutting position of the first cutting device 15A and reverses the front and back of the first optical member joined body PA1 during this conveyance, The first sheet piece F1m of the liquid crystal panel P is conveyed to the first cutting device 15A in a state that the surface to which the first sheet piece F1m is joined is the upper surface.

The first cutting device 15A is provided with a surplus portion Y arranged outside the portion of the liquid crystal panel P facing the display region P4 from the first sheet flake F1m bonded to the liquid crystal panel P, The first optical member F11 (refer to FIG. 3) having a size corresponding to the display region P4 of the liquid crystal panel P is formed. The surplus portion Y of the first sheet member F1m is joined to the first optical member joined body PA1 by the first cutting device 15A, A second optical member joined body PA2 to which the optical member F11 is bonded is formed.

The first collecting device 30 includes a peeling roll 36 that rotates the excess portion Y around the outer circumferential surface and rotates the adsorbing roll 36 and a suction table 31 that adsorbs the liquid crystal panel P. [ The absorption table 31 is disposed below the upstream-side conveyor 6. The first collection device 30 peels and collects the excess portion Y separated from the first sheet piece F1m from the portion corresponding to the corner portion of the first sheet piece F1m. Hereinafter, the portion corresponding to the corner of the first sheet piece F1m in the excess portion Y is referred to as a corner portion Ye of the surplus portion (see Fig. 6).

After the recovery process of the surplus portion Y, the suction table 31 rotates the liquid crystal panel P in a state in which the long side and the short side of the liquid crystal panel P are inclined obliquely with respect to the rotation axis 36a of the peeling roll 36, (P) in the direction of the first pivoting device (18).

The first pivoting device 18 holds and holds the second optical member joined body PA2 that has reached the output end of the upstream conveyor 6 via the first cutting device 15A, P of the second optical member joined body PA2 which has been conveyed while being tilted obliquely with respect to the rotational axis 36a of the peeling roll 36 is moved along the long side of the display region P4 Direction.

The second optical member assembly PA2 is turned by the first pivoting device 18 so that the polarization axes of the respective polarizing films bonded to the front and back surfaces of the liquid crystal panel P become perpendicular to each other.

Therefore, although the direction from the right side to the left side in Fig. 1 is the conveying direction of the liquid crystal panel P in both the upstream conveyor 6 and the downstream conveyor 7, by way of the first pivoting device 18, The upstream-side conveyor 6 and the downstream-side conveyor 7 are offset from each other by a predetermined amount in the width direction as viewed in plan (offset).

The first pivoting device 18 includes an alignment camera 18c similar to the alignment camera 11b of the first adsorption device 11. The first pivot device 18 includes the panel holding portion 11a of the first adsorption device 11 ) As shown in Fig.

The second dust collecting device 16 is disposed on the upstream side of the panel conveying of the second joining apparatus 17 in the vicinity of the joining position of the second joining apparatus 17, The static electricity is removed and dust collecting is performed on the lower surface of PA2.

The second joining apparatus 17 joins the bonded sheet F5 cut to a predetermined size to the lower surface of the second optical member joined body PA2 introduced into the joining position. The second joining apparatus 17 has the same conveying apparatus 22 and the clamping rolls 23 as the first joining apparatus 13.

The cut portion 22c of the second joining apparatus 17 is formed so that the length of the display region P4 (the long side of the display region P4) in the longitudinal direction orthogonal to the width direction of the second optical member sheet F2 And the second optical member sheet F2 having a length longer than the length of the other side (corresponding to the longer side length of the display region P4 in the present embodiment) Therefore, the second optical member sheet F2 is subjected to half cut over the entire width. In this half cut, the cut portion 22c forms a plurality of cut-out lines arranged in the longitudinal direction of the second optical member sheet F2 in strip form. The cutting line is formed at intervals having a length equivalent to the long side length of the display region P4 in the longitudinal direction of the strip-shaped second optical member sheet F2, and the second optical member sheet F2 is formed of a plurality of And divided into a plurality of sections in the longitudinal direction by the section line. Each of the partition portions sandwiched between the pair of cut lines adjacent to each other in the longitudinal direction of the second optical member sheet F2 is divided into one sheet piece (second sheet piece F2m) in the bonded sheet F5 do.

The clamping roll 23 has a pair of joining rollers 23a and 23a arranged so that their axial directions are parallel to each other. A predetermined gap is formed between the pair of joining rollers 23a and 23a, And the position of this gap becomes the joining position of the second joining apparatus 17. [ The second optical member joined body PA2 and the second sheet piece F2m are introduced in a state in which they are overlapped with each other and the second optical member joined body PA2 and the second sheet piece F2m are introduced into the gap, And is sent to the downstream side of the panel conveying while being clamped by the opening 23a. Thereby, on the other surface (the surface opposite to the surface on which the first optical member F11 of the second optical member joined body PA2 is bonded) of the front surface or back surface of the second optical member joined body PA2, And the pieces F2m are integrally joined together to form the third optical member joined body PA3.

The second inverting device 14B conveys the third optical member joined body PA3 to the cutting position of the second cutting device 15B and reverses the front and back of the third optical member joined body PA3 during this conveyance So that the second cutting device 15B is conveyed in a state that the surface on which the second sheet piece F2m of the liquid crystal panel P is joined is the upper surface.

The second cutting device 15B is provided with a surplus portion disposed outside the portion of the liquid crystal panel P facing the display region P4 from the second sheet piece F2m bonded to the third optical member joined body PA3, The second optical member F12 (see Fig. 3) having a size corresponding to the display region P4 of the liquid crystal panel P is formed. The excess portion of the second sheet piece F2m is separated from the third optical member joined body PA3 by the second cutting device 15B so that the other surface of the liquid crystal panel P, And a fourth optical member joined body PA4 to which the first optical member F11 is bonded is formed on one surface of the liquid crystal panel P or on the back surface thereof.

Here, the first cutting device 15A and the second cutting device 15B are, for example, CO ₂ laser cutters. The first cutting device 15A and the second cutting device 15B joints the surplus portion Y disposed outside the portion facing the display region P4 from the sheet pieces F1m and F2m, A first optical member F11 and a second optical member F12 having a size corresponding to the region P4 are formed.

The cutting device 15 detects the outer periphery of the display area P4 of the liquid crystal panel P with a detection device such as a camera and displays the sheet piece FXm bonded to the liquid crystal panel P in the display area P4. (In an endless form) so that the end of the sheet piece FXm does not occur along the outer periphery of the sheet member FXm. The outer periphery of the display area P4 is detected by picking up an edge of the liquid crystal panel P, an alignment mark provided on the liquid crystal panel P, or an outermost edge of a black matrix provided in the display area P4. A frame portion G (see Fig. 3) having a predetermined width for disposing a sealing agent for bonding the first and second substrates P1 and P2 of the liquid crystal panel P is provided outside the display region P4 And the sheet piece FXm by the cutting device 15 is cut (cut line: WCL) within the width of the frame portion G.

Although the CO ₂ laser is used as an example of the cutting device 15 in the above embodiment, the cutting device 15 is not limited to the CO ₂ laser. It is also possible to use a member or a device having another cutting function such as a cutting edge as the cutting device 15. [

The second recovery device 40 includes a peeling roll 46 for winding and rotating the surplus portion around the outer peripheral surface and a suction table 41 for sucking the liquid crystal panel P. [ The suction table (41) is disposed below the downstream conveyor (7). The second collecting device 40 is configured to separate the excess portion Y joined from the second sheet piece F2m into a portion corresponding to the corner portion of the second sheet piece F2m )) And recovered.

After the recovery process of the surplus portion Y, the suction table 41 moves the liquid crystal panel P in a state in which the long side and the short side of the liquid crystal panel P are inclined obliquely with respect to the rotation axis of the peeling roll 46, Is moved in the direction of the second pivoting device (19).

The second pivoting device 19 is arranged so that the long side and the short side of the liquid crystal panel P are shifted obliquely with respect to the rotational axis 36a of the peeling roll 36 and the fourth optical member joined body PA4 ) In the direction along the short side of the display area P4.

The defect inspection apparatus 21 is constructed such that the fourth optical member assembly PA4 having the surface facing the display surface facing upward through the second pivoting device 19 is moved downward (below the surface facing the backlight) (Above the surface facing the display surface) of the fourth optical member joined body PA4 with the camera 21a based on the image data and determines whether or not there is a defect (joining defect, etc.) in the fourth optical member joined body PA4 Inspect.

Hereinafter, the first collection device 30 will be described. The second recovery device 40 also has the same configuration.

5 is a schematic configuration diagram of the first recovery device 30 according to the first embodiment of the present invention. Fig. 6 is a plan view of the first recovering device 30 according to the first embodiment of the present invention when peeling and collecting the excess portion Y. Fig.

5 and 6, the first collecting device 30 includes a peeling roll 36 that rotates the excess portion Y around the outer peripheral surface 36s and rotates, a liquid crystal panel P, The liquid crystal panel P is moved in a direction perpendicular to the rotational axis 36a of the peeling roll 36 in a state in which the long side and the short side of the liquid crystal panel P are inclined obliquely with respect to the rotational axis 36a of the peeling roll 36 And a transfer roll 38 for nipping a part of the excess portion Y. The suction table 31 is provided with a suction table 31, The rotation of the peeling roll 36, the movement of the suction table 31, and the nipping of the excess portion Y by the feed roll 38 are controlled by the control device.

As shown in Fig. 6, the surplus portion Y is formed into a rectangular frame shape in plan view. 6, reference symbol Y1 denotes a long portion along the long side of the liquid crystal panel P in the redundant portion Y and reference symbol Y2 denotes a long portion along the long side of the liquid crystal panel P, And the symbol Ye is a corner portion where an end portion of the long portion Y1 and an end portion of the short portion Y2 of the excess portion Y overlap. 2 is an angle formed between the long side of the liquid crystal panel P and the rotation axis 36a of the peeling roll 36 and the angle 2 is a short side of the liquid crystal panel P, (36a).

In the present embodiment, the suction table 31 is a state in which the long side and the short side of the liquid crystal panel P are tilted by 45 占 with respect to the rotation axis 36a of the peeling roll 36 under the control of the control device The liquid crystal panel P is configured to relatively move in the direction orthogonal to the rotation axis 36a of the peeling roll 36 at the angle? 1 =? 2 = 45 degrees.

The peeling roll 36 is disposed in parallel with the direction orthogonal to the panel transportation direction. As shown in Fig. 5, the peeling roll 36 has a chuck unit 37 for fixing (chucking) the corner Ye of the excess portion Y by a mechanical force. The peeling roll 36 is configured to wind the excess portion Y by rotating under the control of the controller in a state where the corner Ye of the excess portion Y is fixed by the chucking unit 37 have.

The chucking unit 37 includes a chuck portion 37a for fixing the corner Ye of the surplus portion Y and a piston-cylinder mechanism 37b connected to the chuck portion 37a.

The chuck portion 37a is exposed through an opening 36h formed in a part of the peeling roll 36. [ The chuck portion 37a is located below the peeling roll 36 and fixes the corner Ye of the excess portion Y in the initial state before fixing the corner Ye of the excess portion Y So that it is opened.

The piston-cylinder mechanism 37b freely holds the chuck portion 37a. The piston-cylinder mechanism 37b is configured such that the chuck portion 37a is opened before the corner portion Ye of the surplus portion Y is fixed and when the corner portion Ye of the surplus portion Y is fixed Adjust the closed state.

The absorption table 31 absorbs and holds the liquid crystal panel P (hereinafter, referred to as "second optical member assembly PA2" in the following description) from its lower side by, for example, air suction.

The suction table 31 includes a table main body 32 provided movably along the panel conveying direction, a stage 33 supported by the table main body 32 so as to be vertically movable up and down, An inner suction pad 34 supported on the stage 33 for suctioning the lower surface of the liquid crystal panel P and a lower surface of the stage 33 for sucking the lower surface of the liquid crystal panel P (Not shown).

The table main body 32 is movable under the control of the control device between the lower position of the first cutting device 15A and the lower position of the first pivoting device 18 shown in Fig.

The liquid crystal panel P includes a base plate portion P6 (substantially equivalent to the first substrate P1) including a TFT (Thin Film Transistor) substrate, and a base plate portion P6 disposed opposite to the base plate portion P6 And an opposite plate portion P7. The opposite plate portion P7 includes a relatively small substrate (corresponding to the second substrate P2) facing the base plate portion P6 and a liquid crystal layer P3 sealed between them. In the first recovering device 30, the liquid crystal panel P is disposed such that the surface facing the backlight (on the side of the base plate P6) faces upward.

The inner adsorption pad 34 of the stage 33 is adsorbed on the lower surface of the thick plate portion P8 including the facing plate portion P7 of the liquid crystal panel P. [ The outer absorption pad 35 of the stage 33 is adsorbed on the lower surface of the thin plate portion P9 mainly including the base plate portion P6 on the outer side of the thick plate portion P8 of the liquid crystal panel P. The lower surface of the thick plate portion P8 and the lower surface of the thin plate portion P9 are continuous in a stepped shape and the outer suction pad 35 abuts against the substantially vertical stepped surface between them, The panel P is positioned. Further, the display region P4 of the liquid crystal panel P is formed in the outer shape of the thick plate portion P8.

The suction table 31 is relatively displaced downward of the peeling roll 36 in a state where the corner Ye of the excess portion Y is fixed by the chucking unit 37 based on the control of the control device , And part of the excess portion (Y) is peeled off.

The transfer roll 38 is moved in the direction of the peeling roll 36 by nipping a part of the excess portion Y after the suction table 31 is relatively displaced downward of the peeling roll 36 based on the control of the control device, (The tangential direction in the rotational direction of the roll 38a in the nipping portion by the feed roll 38) in the same direction as the take-up direction of the excess portion Y by the feed roll 38. [

The stage 33 is configured to adsorb the adsorption pads 34 and 35 on the lower surface of the corresponding portion of the liquid crystal panel P under the control of the control device when the stage 33 is in the lowered position . From this state, as the stage 33 is displaced to the raised position, the liquid crystal panel P adsorbed by the stage 33 is also integrally raised.

Next, the operation of the first recovery device 30 will be described.

7A to 9C are explanatory diagrams showing the operation of the first collection device 30 according to the first embodiment of the present invention. 7A to 9C, for the sake of convenience, the moving direction of the suction table 31 is shown opposite to the panel carrying direction shown in Fig.

7A, when the stage 33 is at the lowered position, the suction table 31 moves the corners Ye of the excess portion Y to the chuck portion 37a of the peeling roll 36, .

6, the longer sides and the shorter sides of the liquid crystal panel P are rotated at 45 deg. Relative to the rotation axis 36a of the peeling roll 36 by the movement of the suction table 31, The liquid crystal panel P is moved in a direction orthogonal to the rotation axis 36a of the peeling roll 36. In this state, As a result, the long portion Y1 and the short portion Y2 of the excess portion Y are evenly peeled off.

In the present embodiment, only the suction table 31 is moved without moving the separation roll 36 under the control of the control device, but the relative movement method is not limited to this method. The adsorption table 31 and the peeling roll 36 can be moved by moving only the peeling roll 36 without moving the adsorption table 31 or by moving both the adsorption table 31 and the peeling roll 36. [ The present invention can also be applied to a method of relatively moving the light source.

Subsequently, as shown in Fig. 7B, the stage 33 is raised to bring the corner Ye of the surplus portion Y close to the chuck portion 37a. For example, the corner Ye of the surplus portion Y is moved to be drawn into the open portion of the chuck portion 37a.

Subsequently, as shown in Fig. 8A, the piston-cylinder mechanism 37b moves the chuck portion 37a to fix the corner Ye of the surplus portion Y by the chuck portion 37a.

Subsequently, as shown in Fig. 8B, the stage 33 is lowered in a state where the corner portion Ye of the surplus portion Y is fixed by the chuck portion 37a, and a part of the surplus portion Y Peel off. As a result, the corner Ye of the excess portion Y is lifted by the chuck portion 37a.

The contact area between the corner Ye of the surplus portion Y and the liquid crystal panel P is larger than the contact area between the longer portion Y1 of the surplus portion Y and the liquid crystal panel P Or the contact area between the short portion Y2 and the liquid crystal panel P.

When the excess portion Y is peeled off from the long portion Y1 or the short portion Y2 of the excess portion Y, a large load is required because the contact area with the liquid crystal panel P is large, An excessive force is applied to the portion Y and a part of the excess portion Y is cut off to stop the recovery of the excess portion Y. [

In contrast, in the present embodiment, since the excess portion Y is peeled off from the corner Ye of the excess portion Y, the long portion Y1 or the short portion Y2 of the excess portion Y is peeled off, The load at the time of peeling can be reduced and peeling can be facilitated.

8C, after the corner Ye of the excess portion Y is lifted by the chuck portion 37a, the transporting roll 38 nipping a part of the excess portion Y. Then, as shown in Fig. A part of the excess portion (Y) is nipped so that the peeling position of the excess portion (Y) is restricted.

A power transmission mechanism 39 for transmitting the rotational force of the peeling roll 36 to the feed roll 38 is disposed between the peeling roll 36 and the feed roll 38. The power transmission mechanism 39 includes a first gear 39a disposed in contact with the peeling roll 36 and a second gear 39b disposed in contact with the roll 38a of the first gear 39a and the conveying roll 38, And a gear 39b. Thus, the first gear 39a, the second gear 39b, and the feed roll 38 are configured to rotate in synchronization with the rotation of the peeling roll 36. [

The excess portion (Y) is taken off from the liquid crystal panel (P) by the rotation of the peeling roll (36) and wound. Concretely, the peeling roll 36 is rotated while the corners Ye of the excess portion Y are fixed by the chucking portion 37a while the feed roll 38 is nipping a part of the excess portion Y, The surplus portion Y is wound. The conveying roll 38 is rotated by the power transmitting mechanism 39 in synchronization with the rotation of the peeling roll 36 and in the same direction as the winding direction of the excess portion Y by the peeling roll 36, .

9A, when the peeling roll 36 further rotates, the peeled portion (the long portion Y1 and the short portion Y2 of the residual portion Y) in the excess portion Y is peeled off, Is gradually peeled from the downstream side of the panel transportation.

At this time, the suction table 31 moves the liquid crystal panel P toward the peeling roll 36 in a state in which the long side and the short side of the liquid crystal panel P are inclined obliquely with respect to the rotation axis 36a of the peeling roll 36 (The direction of the arrow in Fig. 9A). The suction table 31 moves in the above-described direction in synchronization with the rotation of the peeling roll 36. In this manner, in synchronism with the rotation of the peeling roll 36, the first gear 39a, the second gear 38a, and the feed roll 38 rotate and the suction table 31 is moved in the direction .

Subsequently, as shown in Fig. 9B, the suction table 31 further moves in the above-described direction, and is separated from the peeling roll 36. Fig. On the other hand, by the rotation of the peeling roll 36, the excess portion Y wound on the peeling roll 36 is released from the nipping by the feed roll 38. [ Then, the surplus portion Y is restored to its linear shape from the wound state by its elastic force.

Then, as shown in Fig. 9C, the chuck portion 37a is opened by the control of the control device, whereby the surplus portion Y is discarded in the collection box 50 disposed below.

After the recovery of the excess portion Y, for example, the suction table 31 is returned to its original position, and the stage 33 is lowered by a predetermined amount. After the absorption table 31 adsorbs the liquid crystal panel P on the upstream side, the above-described respective processes are repeated.

As described above, according to the film bonding system 1 of the first embodiment of the present invention, after the sheet piece FXm larger than the display area P4 is bonded to the liquid crystal panel P, the sheet piece FXm The optical member having a size corresponding to the display region P4 can be formed on the surface of the liquid crystal panel P. [ As a result, the optical member can be installed close to the display region P4 with high accuracy, and the frame portion outside the display region P4 can be narrowed, thereby enlarging the display region and downsizing the device.

By removing the excess portion Y from the corner portion Ye of the excess portion Y at the time of collecting the excess portion Y cut off from the sheet piece FXm, the contact area can be small so that it can be peeled off with a weak force, It is possible to suppress the breakage of a part of the excess portion Y and to continuously recover the excess portion Y without interruption without stopping the recovery of the excess portion Y. [

The liquid crystal panel P is moved to the peeling roll 36 in a state in which the absorption table 31 is tilted at an oblique angle with respect to the rotation axis 36a of the peeling roll 36, (The direction of the arrow in Fig. 9A) orthogonal to the rotational axis 36a of the wiper blade 36. Therefore, when excess portion Y is peeled off, extra force is prevented from being exerted on the portion to be peeled off. Therefore, the entirety of the frame-like surplus portion (Y) is reliably peeled off from the liquid crystal panel (P).

Further, since the feed roll 38 rotates in synchronization with the rotation of the peeling roll 36, the entire frame-like excess portion Y is peeled off from the liquid crystal panel P without fail.

The liquid crystal panel P is placed on the peeling roll 36 in a state in which the absorption table 31 is inclined by 45 DEG with respect to the rotation axis 36a of the peeling roll 36, The long portion Y1 and the short portion Y2 of the excess portion Y are evenly peeled off. Therefore, the entirety of the frame-like surplus portion (Y) is reliably peeled off from the liquid crystal panel (P).

In the present embodiment, a mechanical chuck for fixing the corner Ye of the surplus portion Y as a chuck unit 37 with a mechanical force is described as an example. However, the fixing method (chuck method) It does not. For example, it is also possible to use a vacuum chuck that fixes and fixes the corner Ye of the excess portion Y by vacuum suction.

Further, in the present embodiment, an example has been described in which the recovery device peels and collects the excess portion Y from the corner Ye, but the present invention is not limited to this method.

For example, as shown in Fig. 10, the recovery device may peel and recover the excess portion Y from the portion CP of the short portion Y2. In this case, under the control of the control device, the absorption table 31 is rotated in the state where the long side of the liquid crystal panel P is orthogonal to the rotation axis 36a of the peeling roll 36 (? 3 = 90 degrees) So that the panel P is relatively moved in a direction perpendicular to the rotation axis 36a of the peeling roll 36. [ Then, a portion CP of the short portion Y2 of the excess portion Y is fixed by the chuck portion 37a (see Fig. 5). The surplus portion Y is peeled and recovered by the same operation as the above embodiment.

The present invention is also applicable to such a configuration.

Further, the recovery device may peel off and recover the excess portion Y from a part of the long portion Y1. That is, the recovery device may be configured so as to fix the excess portion (Y), peel it off the optical member, and recover it.

The present invention is not limited to the above embodiment. For example, the surplus portion Y is not limited to a rectangular frame shape in plan view, but may be a shape seen in various planes such as an L-shape.

Although the case of bonding the polarizing film to the liquid crystal panel has been explained, the optical display component to which the optical member is attached is not limited to the liquid crystal panel, but may be applied to, for example, an organic EL panel. The optical member to be bonded is not limited to a polarizing film but can be applied to, for example, an antireflection film or a light diffusion film.

In the above embodiment of the present invention, the liquid crystal panel P has the first surface and the back surface is the second surface. However, the liquid crystal panel P may have the second surface, It may be one side.

While the preferred embodiments of the present invention have been described with reference to the accompanying drawings, it is needless to say that the present invention is not limited to these embodiments. All shapes, combinations, and the like of each constituent member shown in the above-described embodiments are merely examples, and can be variously changed based on design requirements and the like without departing from the gist of the present invention.

1: Film bonding system (production system of optical display device)
13: First bonding apparatus (bonding apparatus)
15: Cutting device
15A: First cutting device (cutting device)
15B: Second cutting device (cutting device)
17: Second bonding apparatus (bonding apparatus)
30: First recovery device (recovery device)
31, 41: Adsorption table
36, 46: peeling roll
36a:
37: Chuck unit
38: Feed roll
40: Second collecting device (collecting device)
F: optical member sheet
F1m: first sheet piece (sheet piece)
F2m: second sheet piece (sheet piece)
P: Liquid crystal panel (optical display part)
P4: Display area
R1: fabric roll
Y: surplus portion
Ye: Corner portion of the surplus portion (portion corresponding to the corner portion of the sheet portion of the surplus portion)

Claims (7)

A production system for an optical display device,
Shaped optical member sheet having a width wider than the length of one of the long side and the short side of the display region of the optical display component is unwound from the far end roll and the optical member sheet is wound around the long side of the display region and the short side A joining device for joining the sheet piece to the optical display part by obtaining a sheet piece by cutting to a length longer than the length of the other of the sides,
An optical member having a size corresponding to the display area is formed by cutting off a surplus part disposed outside the opposite portion of the sheet piece corresponding to the display area from the sheet piece bonded to the optical display part A cutting device,
And a recovery device for fixing said excess portion to peel off said optical member and recovering said excess portion. The production system of the optical display device according to claim 1, wherein the recovery device peels the excess portion from the portion corresponding to the corner portion of the sheet piece, and recovers the excess portion. 3. The optical display device according to claim 1 or 2, wherein the recovery device comprises: a peeling roll for winding and rotating the surplus portion around the outer circumferential surface; and a peeling roll for picking up the optical display component, And a suction table for relatively moving the optical display component in a direction orthogonal to the rotation axis of the peeling roll while being tilted obliquely with respect to the rotation axis of the peeling roll. The chucking unit according to claim 3, wherein the peeling roll includes a chuck unit for fixing the excess portion, and the chuck unit rotates while the excess portion is fixed, Production system of optical display device. The optical pick-up apparatus according to claim 3 or 4, wherein the suction table is relatively displaced downward of the peeling roll in a state in which the excess portion is fixed by the chuck unit to thereby peel off a part of the excess portion, Production system of. 6. The apparatus according to claim 5, wherein the recovery device is configured to nip a portion of the excess portion after the adsorption table is relatively displaced downward of the peeling roll, And a conveying roll for conveying the excess portion in the same direction as the conveying roll. 7. The optical display device according to any one of claims 3 to 6, wherein the suction table is arranged such that the long side and the short side of the optical display part are inclined by 45 占 with respect to the rotation axis of the peeling roll, Is relatively moved in a direction orthogonal to the rotation axis of the peeling roll.

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