KR101973832B1

KR101973832B1 - Optical display device production system, and optical display device production method

Info

Publication number: KR101973832B1
Application number: KR1020147022139A
Authority: KR
Inventors: 리키야 마츠모토; 미키오 후지이; 히로미츠 다나카
Original assignee: 수미토모 케미칼 컴퍼니 리미티드
Priority date: 2012-02-29
Filing date: 2013-02-21
Publication date: 2019-04-29
Also published as: CN104115209A; JP2014209266A; JP5592587B2; TW201334952A; KR20140128325A; JPWO2013129235A1; JP5692712B2; TWI609767B; CN104115209B; WO2013129235A1

Abstract

The production system of the optical display device includes a bonding apparatus for bonding the optical member to the liquid crystal panel. The joining apparatus comprises: a winding section for winding the optical element sheet together with the separator sheet from the master roll; A cutting device for cutting the optical member sheet leaving the separator sheet to make an optical member; A knife edge for peeling the optical member from the separator sheet; And has a joining head tilted so as to follow the curvature of the holding surface so as to hold the optical member on the holding surface of the arc shape and to join the optical member held on the holding surface to the liquid crystal panel.

Description

TECHNICAL FIELD [0001] The present invention relates to an optical display device manufacturing system and an optical display device manufacturing method,

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

The present application claims priority based on Japanese Patent Application No. 2012-044478 filed on February 29, 2012 and Japanese Patent Application No. 2012-084831 filed on April 3, 2012, .

BACKGROUND ART Conventionally, in an optical display device production system 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) has a structure in which a sheet piece having a size adapted to a display region of a liquid crystal panel, And then they are packed and transported to another line and then bonded to the liquid crystal panel (see, for example, Patent Document 1).

[Patent Document 1] Japanese Patent Application Laid-Open No. 2003-255132

However, in the above-described conventional constitution, a sheet piece slightly larger than the display area is cut in consideration of the dimensional deviation of the liquid crystal panel and the sheet member, and the deviation (displacement) of the sheet member with respect to the liquid crystal panel. Therefore, an extra area (framed part) is formed in the periphery of the display area, which leads to a problem that miniaturization of the device is hindered.

In view of the above circumstances, an aspect of the present invention is to provide an optical display device production system and an optical display device production method capable of enlarging a display area and reducing the size of a device by reducing the frame area around the display area The purpose is to provide.

In order to solve the above-mentioned problems and to achieve the related object, the present invention adopts the following modes.

(1) According to one aspect of the present invention, there is provided a production system of an optical display device for bonding an optical member to an optical display component, wherein a width of a display area of the optical display component Shaped optical member sheet having a width corresponding to that of the optical member sheet is cut out from the original roll and the optical member sheet is cut into a length corresponding to the length in the conveying direction of the display area to form the optical member And a joining device for joining the optical member to the optical display part after the joining, wherein the joining device comprises: a winding part for winding the optical member sheet together with the separator sheet from the master roll; A cut portion that cuts the optical member sheet leaving the separator sheet to make the optical member; A peeling section for peeling the optical member from the separator sheet; A bonding head which holds the optical member on the holding surface and tilts the optical member held on the holding surface to the optical display component; The bonding head is moved between a peeling position of the optical member from the separator sheet and a bonding position of the optical member to the optical display part, Wherein the optical member has an adhesive layer on a surface to be bonded to the optical display component, and the bonding head has a surface on the opposite side of the adhesive layer from the optical member to the holding surface Wherein the holding surface has a weaker adhesive force than the adhesive layer and is capable of repeatedly adhering and peeling off the surface of the optical member opposite to the adhesive layer side, When the optical member is adhered to the optical member, the driving force of the driving device is not used, Characterized in that the tilting la passive.

(2) The separator according to the above mode (1), wherein the peeling section separates the optical member from the separator sheet with the bonding surface with the optical display component facing downward, The upper surface may be held on the holding surface and moved between the peeling position and the bonding position with the bonding surface facing downward.

(3) The bonding head according to the above mode (1) or (2), wherein the bonding head moves the optical member held on the holding surface in a horizontal direction (a moving direction of the bonding head and a direction perpendicular thereto, ) May be used.

(4) The bonding apparatus according to any one of (1) to (3), wherein the bonding apparatus has a detection section for detecting a defect mark displayed on the optical member sheet, It may be held on the head and transported to the destruction position.

(5) In the configuration according to any one of the above items (1) to (4), the optical display component may be provided with a rotary table for moving the optical display component to the carry-in position, the joint position and the carry-out position.

(6) In the above-mentioned aspect (5), the rotary table may include: a first rotary table corresponding to joining of the optical member to one side surface of the front side of the optical display component; And a second rotary table corresponding to the joining of the optical member.

(7) In the above-mentioned aspect (5), the rotary table may be provided in a single unit corresponding to the joining of the optical member to both the front and back surfaces of the optical display part.

(8) In the above-mentioned aspect (5), the rotating table may be provided so as to correspond to each of the plurality of optical members bonded to the optical display component.

(9) In the above-mentioned (7) or (8), preferably, a plurality of optical members are provided for each kind of (one kind) optical member so that the optical members are joined to the plurality of optical display parts The bonding apparatus may be provided.

(10) According to one aspect of the present invention, there is provided a method of manufacturing an optical display device for bonding an optical member to an optical display component, the method comprising the steps of: Shaped optical member sheet having a width corresponding to the width of the optical member sheet is cut out from the disk roll while the optical member sheet is cut into a length corresponding to the length in the conveying direction of the display area to form the optical member, And a joining step of joining the optical member sheet to the optical display part, wherein the joining step comprises: an elongating step of winding the optical member sheet together with the separator sheet from the disk roll; A cutting step of cutting the optical member sheet while leaving the separator sheet as the optical member; A peeling step of peeling the optical member from the separator sheet; Holding the optical member on the holding surface of the bonding head and tilting the bonding head so as to bond the optical member held on the holding surface to the optical display component; The joining head is moved by a driving device between a peeling position of the optical member from the separator sheet and a joining position of the optical member to the optical display component and the holding and joining of the optical member is performed Wherein the optical member has an adhesive layer on a surface to be bonded to the optical display component, and the bonding head is bonded to the adhesive layer of the optical member, And the holding surface has an adhesive strength weaker than that of the adhesive layer and is capable of repeatedly adhering and peeling the surface of the optical member opposite to the adhesive layer side Wherein when the optical member is adhered to the holding surface, the joining head moves the driving force of the driving device Without the use, it characterized in that the passive tilt according to keep exporting of the optical member.

(11) According to one aspect of the present invention, there is provided an optical display device production system for bonding an optical member to an optical display component, wherein the optical member sheet is wound around the optical member sheet, A joining device for joining the optical member to the optical display part after cutting the optical member into the optical member; A measuring device for measuring an external dimension of the optical display part; And a control device for determining a cut position of the optical member sheet in the bonding apparatus based on the measurement result of the external dimension.

(12) The bonding apparatus according to (11), wherein the joining apparatus comprises: a winding section for winding the optical member sheet together with the separator sheet from the master roll; A cut portion that cuts the optical member sheet leaving the separator sheet as the optical member; A peeling section for peeling the optical member from the separator sheet; And a bonding head for holding the optical member on the holding surface and bonding the optical member held on the holding surface to the optical display component.

(13) The bonding apparatus according to (11) or (12) above, further comprising: a first bonding apparatus for bonding the front side and the back side of the optical display component; and a second bonding apparatus for bonding the front and back sides of the optical display component Wherein the cut portion of the optical member sheet in the first joining apparatus and the cut portion of the optical member sheet in the second joining apparatus are both laser cutters, Wherein the cut portion of the second bonding apparatus and the cut portion of the second bonding apparatus are connected to the same laser output apparatus and the laser output from the laser output apparatus is connected to the cut portion of the first bonding apparatus and the cut portion of the second bonding apparatus It may be branched.

According to each of the above-described aspects of the present invention, the optical member sheet having a width corresponding to the display area is cut to a predetermined length to form an optical member, and the optical member is moved in a circular arc shape And the optical member is bonded to the optical display component by tilting of the bonding head in the same manner to suppress the dimensional deviation and the bonding deviation of the optical member and to reduce the frame area around the display area to enlarge the display area, Can be reduced.

Further, continuous joining of the optical members is facilitated, and the production efficiency of the optical display device can be increased.

In addition, the optical member can be smoothly held by the tilting of the holding surface of the circular arc shape, and the optical member can be surely bonded to the optical display component by the tilting of the arc-shaped holding surface.

1 is a side view schematically showing a film bonding system according to a first embodiment of the present invention.
2 is a plan view of the liquid crystal panel of the present embodiment.
3 is a cross-sectional view taken along line A-A in Fig.
4 is a sectional view of the optical member sheet of the present embodiment.
Figure 5 is a top view of the film bonding system.
6 is a side view showing the outline of a bonding apparatus of the film bonding system.
7 is a plan view of a film bonding system according to a second embodiment of the present invention.
8 is a plan view of a film bonding system according to a third embodiment of the present invention.
9 is a side view schematically showing a film bonding system according to a fourth embodiment of the present invention.
10 is a side view schematically showing a bonding apparatus of a film bonding system.
11 is a plan view showing a step of measuring the external dimensions of the liquid crystal panel.
12A is a schematic view of a bonding apparatus applied to a film bonding system according to a fifth embodiment of the present invention.
12B is a schematic view of a bonding apparatus applied to the film bonding system of the fifth embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this embodiment, a film joining system constituting a part of the production system of the optical display device will be described.

1 is a schematic configuration diagram of a film bonding system 1 of the present embodiment. The film joining system 1 joins a film-shaped optical member such as a polarizing film, a retardation film or a brightness increasing film to a panel-shaped optical display component such as a liquid crystal panel or an organic EL panel. The film joining system 1 is constituted as a part of a production system for producing an optical display device including the optical display component and the 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 divided into two upper and lower stages.

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 having a rectangular shape when viewed in plan view, a second substrate P2 having a relatively small rectangular shape arranged to face the first substrate P1, And a liquid crystal layer P3 sealed between the first substrate P1 and the second substrate P2. The liquid crystal panel P has a rectangular shape conforming to the outer shape of the first substrate P1 when viewed in a plan view and a region that enters the inside of the outer periphery of the liquid crystal layer P3 as viewed in a plane is referred to as a display region P4 do.

3 is a cross-sectional view taken along line A-A in Fig. The first, second and third optical member sheets F1, F2 and F3 (refer to FIG. 1, hereinafter collectively referred to as optical member sheet FX) having long strips are arranged on the front and back surfaces of the liquid crystal panel P. Second, and third optical members F11, F12, and F13 (hereinafter collectively referred to as optical members F1X) are properly bonded to each other. In this embodiment, a first optical member F11 and a 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. A second optical member F12 as a brightness enhancement film is further laminated on the backlight side surface of the liquid crystal panel P so as to overlap 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. Fig. The optical member sheet FX includes a film-like optical member main body F1a, an adhesive layer F2a provided on one surface (upper surface in Fig. 4) of the optical member main body F1a, and an adhesive layer F2a A separator sheet F3a detachably laminated on one surface of the optical member main body F1a and a surface protective film F4a laminated on the other surface of the optical member main body F1a 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. For convenience of illustration, hatching of each layer in Fig. 4 is omitted.

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 the separator sheet F3a is 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.

The optical member sheet FX may not 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 main body F1a includes a sheet polarizer F6 and a first film F7 bonded to one surface of the polarizer F6 by an adhesive or the like and a second film F6 bonded to the other surface of the polarizer F6 And a second film (F8) joined by the second film (F8). The first film F7 and the second film F8 are, for example, protective films for protecting the polarizer F6.

The optical member main body F1a may have a single-layer structure including a single optical layer or a multi-layer structure including a plurality of optical layers stacked on 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 an antiglare film including a hard coat treatment for protecting the outermost surface of the liquid crystal display element or an antiglare treatment Antiglare) or the like can be obtained. 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 via the adhesive layer F2a.

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

The film bonding system 1 sets the predetermined position of the main conveyor 5 at the starting point (start point) 5a and end point (end point) 5b of the joining process. The film joining system 1 includes first and second sub conveyors 6 and 7 extending at right angles to the main conveyor 5 at a point of time 5a and first and second sub conveyors 6 and 7 extending from the viewpoint 5a to the first sub- A first conveying device 8 for conveying the liquid crystal panel P to the first starting position 6a of the first sub conveyor 6, a cleaning device 9 provided on the first sub conveyor 6, A first rotary index 11 provided on the downstream side of the panel conveyance of the first sub conveyor 6 and a first rotary index 11 of the first rotary index 11 from the first end position 6b of the first sub conveyor 6, A second transfer device 12 for transferring the liquid crystal panel P to the first rotary index 11a and first and second bonding devices 13 and 15 provided around the first rotary index 11 and a film peeling device 14).

The film joining system 1 further includes a second rotary index 16 provided on the downstream side of the first rotary index 11 on the panel transportation side and a first rotary end position 11b of the first rotary index 11, A third transfer device 17 for transferring the liquid crystal panel P from the first rotary index 16 to the second rotary start position 16a of the second rotary index 16, The apparatus 18 and the inspection apparatus 19 as well as the second sub conveyor 7 provided on the downstream side of the panel conveyance of the second rotary index 16 and the second rotary end position A fourth conveying device 21 for conveying the liquid crystal panel P from the second conveying position 16b to the second starting position 7a of the second sub conveyor 7, And a fifth conveying device 22 for conveying the liquid crystal panel P from the second conveying device 5 to the end point 5b of the main conveyor 5. [

The film joining system 1 conveys the liquid crystal panel P by using the lines formed by the driving main conveyor 5, each of the sub conveyors 6 and 7 and the respective rotary indexes 11 and 16, The panel P is subjected to predetermined processing in order. The liquid crystal panel P is conveyed on the line with its front and back surfaces being leveled.

In the main conveyor 5, for example, the liquid crystal panel P is conveyed in a direction in which the short side of the display region P4 is along the conveying direction, and the sub conveyors 6 and 7, which are perpendicular to the main conveyor 5, The long sides of the display region P4 are conveyed in the direction along the conveying direction and the long sides of the display region P4 are moved along the radial directions of the rotary indexes 11 and 16 in the respective rotary indexes 11 and 16 Direction. Reference numeral 5c in the drawing denotes a rack that flows on the main conveyor 5 in correspondence with the liquid crystal panel P.

(Equivalent to the optical member F1X) of the bonded sheet F5 cut out to a predetermined length from the optical member sheet FX in a band shape is bonded to the front and back surfaces of the liquid crystal panel P. The respective parts of the film bonding system 1 are collectively controlled by the control device 25 as an electronic control device.

The first transport device 8 holds the liquid crystal panel P and freely transports it in the vertical direction and the horizontal direction.

The first conveying device 8 conveys the liquid crystal panel P held by suction, for example, in a horizontal state at the first starting position 6a (the left end in Fig. 5) of the first sub conveyor 6 And releases the suction at the corresponding position to transfer the liquid crystal panel P to the first sub conveyor 6.

The cleaning device 9 is a flushing type in which, for example, brushing and water washing of the front and back surfaces of the liquid crystal panel P are performed, and then water droplets are removed from the front and back surfaces of the liquid crystal panel P. The cleaning device 9 may be a dry type that performs electrostatic elimination and dust collection on the front and back surfaces of the liquid crystal panel P. [

The second transport apparatus 12 holds the liquid crystal panel P and freely transports it in the vertical direction and the horizontal direction. The second transfer device 12 conveys the liquid crystal panel P held by suction, for example, in a horizontal state at the first rotary start position 11a of the first rotary index 11, And releases the attraction to transfer the liquid crystal panel P to the first rotary index 11.

The first rotary index 11 is a disk-like rotary table having a rotation axis along the vertical direction, and rotates in the clockwise direction with the left end as viewed in the plane of Fig. 5 as the first rotary start position 11a . The first rotary index 11 has a first bonding position 11c at a position (the upper end in Fig. 5) rotated by 90 占 from the first rotary start position 11a in the right rotation direction. At this first joining position 11c, the first optical member F11 on the backlight side by the first joining apparatus 13 is joined.

The first rotary index 11 has a film peeling position 11e at a position (right upper end in Fig. 5) rotated by 45 占 in the right turning direction from the first bonding position 11c. At this film peeling position 11e, the peeling of the surface protective film F4a of the first optical member F11 by the film peeling apparatus 14 is performed.

The first rotary index 11 has a second bonding position 11d at a position (right end position in FIG. 5) rotated by 45 degrees in the right-turning direction from the film peeling position 11e. At the second bonding position 11d, the second optical member F12 on the backlight side by the second bonding apparatus 15 is bonded.

The first rotary index 11 has a first rotary end position 11b at a position (the lower end in Fig. 5) rotated by 90 占 from the second joint position 11d in the clockwise direction. At this first rotary end position 11b, the third transfer device 17 carries out the transfer.

The third conveyor 17 holds the liquid crystal panel P and conveys the liquid crystal panel P freely in the vertical direction and the horizontal direction. The third conveying device 17 conveys the liquid crystal panel P held by suction, for example, to the second rotary start position 16a of the second rotary index 16, and at the same time, The front and back of the panel P are reversed and the suction is released at the second rotary start position 16a to transfer the liquid crystal panel P to the second rotary index 16.

The second rotary index 16 is a disc-shaped rotary table having a rotation axis along the vertical direction, and rotates in the right rotation direction with the upper end of the rotary index 16 as viewed in the plane of FIG. 5 as the second rotary start position 16a. The second rotary index 16 has a third junction position 16c at a position (the right end in Fig. 5) rotated by 90 占 from the second rotary start position 16a in the clockwise direction. At the third bonding position 16c, the third optical member F13 on the display face side is bonded by the third bonding apparatus 18.

The second rotary index 16 has a position (lower end in Fig. 5) rotated by 90 占 from the third bonding position 16c in the right turning direction as the bonding inspection position 16d. At this junction inspection position 16d, it is judged whether or not the position of the optical member F1X is appropriate by the inspection apparatus 19 of the film-joined work (work liquid crystal panel P) Or not) is performed. The work determined that the position of the optical member F1X relative to the liquid crystal panel P is not appropriate is discharged to the outside of the system by a not shown discharge portion.

The second rotary index 16 has a second rotary end position 16b at the position (the left end in Fig. 5) rotated 90 占 from the joining inspection position 16d in the right turning direction. At this second rotary end position 16b, the fourth transfer device 21 carries out the transfer.

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

The fifth conveying device 22 holds the liquid crystal panel P and freely transports it in the vertical direction and the horizontal direction. The fifth conveying device 22 conveys the liquid crystal panel P held by suction, for example, to the end point 5b of the main conveyor 5 and releases the attraction at the end point 5b, P to and from the main conveyor 5. Thus, the joining process by the film joining system 1 is completed.

Hereinafter, the details of the first bonding apparatus 13 will be described with reference to Fig. The second and third joining apparatuses 15 and 18 have the same configuration, and detailed description thereof is omitted.

The first joining apparatus 13 is provided with a sheet joining sheet F5 which is cut to a predetermined size on the first optical member sheet F1 with respect to the upper surface of the liquid crystal panel P conveyed to the first joining position 11c (The first optical member F11).

The first joining apparatus 13 is constituted such that the first optical member sheet F1 is wound along the longitudinal direction of the first optical member sheet F1 while the first optical member sheet F1 is being unwound from the disc roll R1 on which the first optical member sheet F1 is wound And the sheet conveying device 31 holds the sheet piece (the first optical member F11) of the bonded sheet F5 cut out from the first optical member sheet F1, And a joining head 32 joining the sheet piece to the upper surface of the liquid crystal panel P conveyed to the first joining position 11c.

The sheet conveying apparatus 31 conveys the bonded sheet F5 using the separator sheet F3a as a carrier. The sheet conveying apparatus 31 includes a take-up unit 31a for holding a disc roll R1 around which a band-shaped first optical member sheet F1 is wound, and for continuing the first optical member sheet F1 along its longitudinal direction, A cutting device 31b for performing a half cut on the first optical member sheet F1 wound from the disk roll R1 and a first optical member sheet F1 subjected to the half cut are wound at an acute angle, A knife edge 31c for separating the bonded sheet F5 from the sheet F3a and a winding portion 31d for holding the separator roll R2 for winding the separator sheet F3a alone by way of the knife edge 31c ).

Although not shown, the sheet conveying device 31 has a plurality of guide rollers which are wound around the first optical member sheet F1 so as to follow a predetermined conveying path. The width of the display region P4 of the liquid crystal panel P (in this embodiment, the short side of the display region P4 in the present embodiment) in the horizontal direction (the sheet width direction) perpendicular to the conveying direction of the first optical member sheet F1, Equivalent to the length) of the first embodiment.

The winding portion 31a positioned at the start point of the sheet conveying apparatus 31 and the winding portion 31d positioned at the end point of the sheet conveying apparatus 31 are synchronized with each other . As a result, while the winding section 31a continues to discharge the first optical member sheet F1 in its carrying direction, the winding section 31d winds the separator sheet F3a through the knife edge 31c. The upstream side in the conveying direction of the first optical member sheet F1 (separator sheet F3a) in the sheet conveying apparatus 31 is referred to as the sheet conveying upstream side, and the downstream side in the conveying direction is referred to as the sheet conveying downstream side.

The cutting device 31b is arranged so that the first optical member sheet F1 has a length in the longitudinal direction orthogonal to the sheet width direction (corresponding to the long side length of the display region P4 in this embodiment) A part of the thickness of the first optical member sheet F1 in the thickness direction is cut across the entire width along the sheet width direction (half cut is performed).

The cutting device 31b is provided so 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 F3a of the separator sheet F3a), the half-cut is performed up to the vicinity of the interface (interface) between the adhesive layer F2a and the separator sheet F3a by adjusting the advancing / retreating position of the cutting blade. It is also possible to use a laser device instead of the cutting blade.

The optical member main body F1a and the surface protective film F4a are cut in the thickness direction of the first optical member sheet F1 after the half cut so that the entire optical member sheet F1 in the sheet width direction A cut line extending across the width is formed. The first optical member sheet F1 is divided into sections each having a length corresponding to the long side length of the display region P4 in the longitudinal direction by the cut-off line. This section becomes one sheet piece (first optical member F11) in the bonded sheet F5.

The knife edge 31c is located at a lower portion of the first optical member sheet F1 that is substantially horizontally transported from the left to right in Fig. 6 and is located at least at its entire width in the sheet width direction of the first optical member sheet F1 Lt; / RTI > The knife edge 31c is wound around the separator sheet F3a side of the first optical member sheet F1 after the half-cut so as to be in sliding contact therewith.

The knife edge 31c winds the first optical member sheet F1 at an acute angle to the tip of the acute-angled shape. When the first optical member sheet F1 is folded at an acute angle at the tip end of the knife edge 31c, the separator sheet F3a is peeled off from the bonded sheet F5. At this time, the adhesive layer F2a (bonding surface with the liquid crystal panel P) of the bonding sheet F5 faces downward. The arcuate retaining surface 32a of the joining head 32 is abutted against the upper end of the knife edge 31c from the upper part of the joining head 31c at the separator peeling position 31e just above the front end of the knife edge 31c, The surface protective film F4a (the surface opposite to the bonding surface) of the sheet piece of the sheet F5 is bonded to the holding surface 32a of the bonding head 32. [

The joining head 32 has a retaining surface 32a which is parallel to the sheet width direction and convexed downward in an arc shape. The holding surface 32a has a weaker adhesive force than the bonding surface (adhesive layer F2a) of the bonding sheet F5 and can bond and peel the surface protective film F4a of the bonding sheet F5 repeatedly .

The joining head 32 is tilted so as to be parallel to the longitudinal direction and to follow the curvature of the holding surface 32a so as to be centered on an axis extending in the sheet width direction from the top of the knife edge 31c , And tilts and moves). The tilting of the bonding head 32 is suitably performed when bonding the bonding sheet F5 and holding the bonding sheet F5 with bonding and bonding to the liquid crystal panel P. [

The joining head 32 is inclined so that the holding surface 32a faces downward and the one end side of the curved surface of the holding surface 32a is downward The one end side is pressed against the tip end of the knife edge 31c from above and the tip end of the joint sheet F5 in the separator peeling position 31e is adhered to the holding face 32a. Thereafter, the entire joining sheet F5 is adhered to the holding surface 32a by tilting the joining head 32 while continuing to release the joining sheet F5.

The bonding head 32 is capable of moving up and down by a predetermined amount at the separator peeling position 31e and the first bonding position 11c and moving it appropriately between the separator peeling position 31e and the first bonding position 11c It is possible. The joining head 32 is connected to a driving device 33 that enables driving at the time of ascending and descending, tilting, and tilting.

The bonding head 32 is configured such that the bonding sheet F5 is adhered to the holding surface 32a after the leading end of the bonding sheet F5 is bonded to the holding surface 32a, And tilting is performed manually as the joint sheet F5 is continuously fed from this state. The bonding head 32 is tilted until the entire bonding sheet F5 is adhered to the holding surface 32a so that the tilting posture locks the tilting by, for example, engaging with the driving device 33. [ And moves to the upper portion of the first bonding position 11c in this state.

The bonding head 32 is actively tilted by the operation of the driving device 33 when the bonded and held bonded sheet F5 is bonded to the liquid crystal panel P and the bending of the holding surface 32a The bonding sheet F5 is firmly pressed on the upper surface of the liquid crystal panel P by pressing.

A first detection camera 34 for detecting the leading end of the sheet sheet on the sheet conveyance downstream side of the bonded sheet F5 at the relevant portion is provided below the tip of the knife edge 31c. The detection information of the first detection camera 34 is sent to the control device 25. [ The control device 25 temporarily stops the sheet conveying device 31 at a point of time when the first detection camera 34 detects the downstream end of the joint sheet F5, The head 32 is lowered to adhere the leading end of the bonding sheet F5 to the holding surface 32a.

The control device 25 determines whether or not the first detection camera 34 detects the downstream end of the bonding sheet F5 and stops the sheet conveying device 31 once the bonding sheet F5 ) Is cut. That is, between the detection position (the optical axis extending position of the first detection camera 34) by the first detection camera 34 and the cut position (the cutting blade advancing / retreating position of the cutting device 31b) by the cutting device 31b The distance along the sheet conveying path corresponds to the length of the sheet of the bonding sheet F5.

The cutting device 31b is movable along the sheet conveying path and is moved along the sheet conveying path between the detection position by the first detection camera 34 and the cut position by the cutting device 31b The distance changes. The movement of the cutting device 31b is controlled by the control device 25. When the bonding sheet F5 is cut by the cutting device 31b and one of the sheets of the bonding sheet F5 is removed , And when the cut end thereof deviates from a predetermined reference position, this deviation is corrected by the movement of the cutting device 31b. It is also possible to correspond to the cut of the bonded sheet F5 having a different length by the movement of the cutting device 31b.

The first detection camera (detection unit) 34 also detects a defect mark displayed on the bonding sheet F5. The defect mark is marked by ink jet or the like from the surface protective film (F4a) side to a defect spot found in the first optical member sheet (F1) at the time of producing the original roll (R1). The bonding sheet F5 having the defect mark detected is bonded to the bonding head 32 and then bonded to the liquid crystal panel P without being bonded to the first bonding position 11c at the abandoned position ), And is stacked on a waste material sheet or the like. There may also be a step of cutting the portion including the defect of the bonding sheet F5 to the minimum width when the defect mark is detected.

When the bonded sheet F5 is moved from the separator peeling position 31e to the first bonding position 11c, the bonding sheet F5 adhered and held on the holding face 32a, for example, the proximal end Are captured by the pair of second detection cameras 35, respectively. The detection information of each second detection camera 35 is sent to the control device 25. [ The control device 25 determines the horizontal direction of the bonding sheet F5 with respect to the bonding head 32 (the moving direction of the bonding head 32 and the direction of movement of the bonding head 32) based on the image pickup data of each second detection camera 35, Its orthogonal direction and the rotational direction of the vertical axis center). When the relative positions of the bonding head 32 and the bonding sheet F5 are deviated, the bonding head 32 performs alignment so that the position of the bonding sheet F5 becomes a predetermined reference position.

A pair of third detection cameras 36 for aligning the liquid crystal panel P in the horizontal direction on the first bonding position 11c are provided at the first bonding position 11c of the first rotary index 11 . A pair of fourth detection cameras 37 for horizontally aligning on the second bonding position 11d of the liquid crystal panel P are provided at the second bonding position 11d of the second rotary index 16, . Each of the third detection cameras 36 picks up images of left and right corners of the glass substrate (first substrate P1) of the liquid crystal panel P, The detection camera 37 picks up, for example, a left corner in FIG. 5 on the glass substrate of the liquid crystal panel P, respectively.

A pair of fifth detection cameras 38 for performing alignment in the horizontal direction on the third bonding position 16c of the liquid crystal panel P are provided at the third bonding position 16c of the second rotary index 16 . Each fifth detection camera 38 picks up, for example, a left corner in FIG. 5 on the glass substrate of the liquid crystal panel P respectively. The detection information of each of the detection cameras 34 to 38 is sent to the control device 25. [ It is also possible to use a sensor in place of each of the detection cameras 34 to 38.

An alignment table 39 is provided on each of the rotary indexes 11 and 16 so as to mount the liquid crystal panel P and enable alignment in the horizontal direction. The alignment table 39 is driven and controlled by the control device 25 based on the detection information of the detection cameras 34 to 38. Thereby, alignment of the liquid crystal panel P with respect to the respective rotary indexes 11, 16 (the respective bonding positions 11c, 11d, 16c) is performed.

The joining sheet F5 aligned with the joining head 32 is bonded to the liquid crystal panel P so that the joining deviation of the optical member F1X is suppressed and the optical member F1X in the optical axis direction is improved, and the uniformity and contrast of the optical display device are increased. It is also possible to provide the optical member F1X with high precision until the display region P4 so that the framing portion G (see Fig. 3) outside the display region P4 is narrowed to enlarge the display area and reduce the size of the device .

As described above, the film joining system 1 in the above embodiment is an example in which the optical member F1X is bonded to the liquid crystal panel P, and a plurality of the liquid crystal panels P, The optical member sheet FX is guided to the display area P4 while the belt-shaped optical member sheet FX having a width corresponding to the display area P4 of the liquid crystal panel P is being unwound from the roll roll R1 And a joining device (13, 15, 18) for joining the optical member (F1X) to the liquid crystal panel (P) after cutting the optical member into a corresponding length to form the optical member (F1X) 15 and 18 are provided with a winding portion 31a for winding the optical member sheet FX together with the separator sheet F3a from the main roll R1 and the optical member sheet FX, A cutting device 31b which cuts the optical member F1X leaving the optical member F13 as the optical member F1X, The optical member F1X is attached to and held on the arcuate holding surface 32a and the optical member F1X held on the holding surface 32a is held by the knife edge 31c, A joining head 32 which tilts so as to follow the curvature of the holding surface 32a so as to join the joining head 32 to the liquid crystal panel P and a joining head 32 which joins the joining head 32 to the separator sheet Between the peeling position (separator peeling position 31e) from the optical member F1a and the bonding positions 11c, 11d and 16c of the optical member F1X to the liquid crystal panel P, (33) for driving the joining head (32) so as to perform holding and joining of the optical member (F1X) by the joining head (32).

This optical member F1X is fixed to the joining head 32 and the optical member F1X is fixed to the optical member F1X by cutting the optical member sheet FX having a width corresponding to the display area P4 to a predetermined length, And the optical member F1X is bonded to the liquid crystal panel P by the tilting of the same bonding head 32 so that the dimensional deviation of the optical member F1X It is possible to suppress the deviation of the joints and reduce the framing section G around the display region P4, thereby enlarging the display area and downsizing the device.

Further, continuous joining of the optical member F1X is facilitated, and the production efficiency of the optical display device can be increased.

In addition, the optical member F1X can be smoothly held by the tilting of the arcuate holding surface 32a, and the optical member F1X can be stably held in the liquid crystal panel P).

In the film joining system 1, the knife edge 31c separates the optical member F1X from the separator sheet F3a with the joining face of the optical member F1X facing downward to face the liquid crystal panel P , The bonding head (32) holds the upper surface on the opposite side of the bonding surface to the holding surface (32a) and holds the bonding surface between the peeling position and the bonding position The optical member sheet FX is transported with its bonding surface on the side of the adhesive layer F2a being directed downward to thereby suppress the occurrence of scratches or foreign matter on the bonding surface of the optical member sheet FX, Can be suppressed.

The film joining system 1 has a structure in which the liquid crystal panel P is placed at a loading position (each rotary start position 11a, 16a), a joining position (joining positions 11c, 11d, 16c) And the rotary indexes 11 and 16 for moving the rotary indexes 11 and 16 to the rotary indexes 11 and 16 (the respective rotary end positions 11b and 16b), the rotary direction of the liquid crystal panel P is efficiently switched, As a result, the line length can be suppressed, and the degree of freedom of installation of the system can be increased.

&Lt; Second Embodiment >

Next, a second embodiment of the present invention will be described with reference to Fig.

The film joining system 101 of this embodiment is different from the first embodiment in that two liquid crystal panels P are transported on a large rotary index 111 and the two liquid crystal panels P are joined Especially in terms of carrying out the process. The other components, which are the same as those of the first embodiment, are denoted by the same reference numerals and the detailed description is omitted.

In the film joining system 101, the first sub conveyor 6 has a pair of first end positions 6b and 6b 'in parallel, and the second sub conveyor 7 has a pair of second start positions 7a, 7a 'in parallel. The film bonding system 101 is provided with a relatively large rotary index 111 instead of the rotary indexes 11 and 16 and a pair of respective joining devices 13, And a peeling device (14). The third transport device 17 between the respective rotary indexes 11 and 16 is not disposed. The inspection apparatus 19 is installed on the second sub-line 7.

The rotary index 111 has a pair of rotary start positions 111a in the extending direction of the first end positions 6b and 6b 'of the first sub conveyor 6, A pair of film peeling positions 111f, a pair of second joining positions 111d, a pair of third joining positions 111e, and a pair of first joining positions 111c, And a pair of rotary end positions 111b in the extending direction of the second start positions 7a and 7a of the second sub-conveyor 7, respectively. Between the second bonding position 111d and the third bonding position 111e, there is provided a reversing device not shown for reversing the liquid crystal panel P.

The film bonding system 101 in the second embodiment can suppress the dimensional deviation and the bonding deviation of the optical member F1X and reduce the framing portion G around the display region P4 similarly to the first embodiment Thereby enlarging the display area and downsizing the device. The tact per one liquid crystal panel P can be shortened by performing the bonding process simultaneously on the pair of liquid crystal panels P. [ By simplifying the rotary index 111, it is possible to simplify the installation by unifying the drive device.

&Lt; Third Embodiment >

Next, a third embodiment of the present invention will be described with reference to Fig.

The film bonding system 201 of this embodiment is provided with the rotary indexes 211 to 214 for each of the bonding apparatuses 13, 15 and 18 and the film peeling apparatus 14 as compared with the first embodiment, In that two liquid crystal panels P are transported on the indexes 211 to 214 and the bonding process is simultaneously performed on these two liquid crystal panels P. [ The other components, which are the same as those of the first embodiment, are denoted by the same reference numerals and the detailed description is omitted.

In the film joining system 201, the first sub conveyor 6 has a pair of first end positions 6b and 6b 'in parallel, and the second sub conveyor 7 has a pair of second start positions 7a, 7a 'in parallel. The film joining system 201 is provided with first, second, third and fourth rotary indexes 211, 212, 213 and 214 in place of the respective rotary indexes 11 and 16, A pair of first joining apparatuses 13 around the rotary index 211 and a pair of film peeling apparatuses 14 around the second rotary index 212 and around the third rotary index 213 And a pair of third joining apparatuses 18 around the fourth rotary indexes 214, respectively. Between each of the rotary indexes 211 to 214, a transfer device not shown in the figure is provided. The inspection apparatus 19 is installed on the second sub-line 7.

The first rotary index 211 has a pair of first rotary start positions 211a in the extending direction of the first end positions 6b and 6b 'of the first sub conveyor 6, A pair of first joint positions 211c and a pair of first rotary end positions 211b adjacent to the second rotary indexes 211 in the direction from the first rotary start position 211a to the right rotation direction Lt; / RTI >

The second rotary index 212 has a pair of second rotary start positions 212a at positions adjacent to the first rotary index and has a pair of second rotary start positions 212a in the right rotation direction from each second rotary start position 212a A pair of film peeling positions 212c, and a pair of second rotary finishing positions 212b adjacent to the third rotary index.

The third rotary index 213 has a pair of third rotary start positions 213a located adjacent to the second rotary index 212 and has a third rotary start position 213a in the direction from the third rotary start position 213a to the right rotation direction A pair of second joint positions 213c, and a pair of third rotary end positions 213b adjacent to the fourth rotary index.

The fourth rotary index 214 has a pair of fourth rotary start positions 214a at positions adjacent to the third rotary index 213 and has a fourth rotary index A pair of third junction positions 214c and a pair of fourth rotary end positions 214b in the extending direction of the respective second start positions 7a and 7a of the second sub conveyor 7 They have these. The transporting device between the third and fourth rotary indexes 213 and 214 has a function of inverting the liquid crystal panel P in the front and back directions.

The film bonding system 201 in the third embodiment can suppress the dimensional deviation and the bonding deviation of the optical member F1X and reduce the framing portion G around the display region P4 similarly to the first embodiment Thereby enlarging the display area and downsizing the device. By performing the bonding process simultaneously on the pair of liquid crystal panels P, the tact per unit liquid crystal panel P can be shortened. By setting a plurality of rotary indexes 211 to 214 for each processing to the liquid crystal panel P, it is possible to improve the degree of freedom in arranging the facility.

The present invention is not limited to the above-described embodiment. For example, the alignment of the liquid crystal panel P and the bonding sheet F5 may be performed by one of the bonding head 32 and the alignment table 39 I do not mind.

The configuration in the above embodiment is an example of the present invention. Of course, various changes can be made within a range that does not deviate from the gist of the present invention, including the component configuration, structure, shape, size, Do.

[Fourth Embodiment]

Fig. 9 is a schematic configuration diagram of the film bonding system 1A of the fourth embodiment.

Hereinafter, the film joining system 1A will be described with reference to Fig. The same reference numerals are given to constituent elements common to those of the above-described embodiment, and a detailed description thereof will be omitted. In the drawing, arrow F indicates the conveying direction of the liquid crystal panel P. In the following description, the upstream side in the conveying direction of the liquid crystal panel P is referred to as the upstream side of the panel conveyance, and the downstream side in the conveying direction of the liquid crystal panel P is referred to as the downstream side of the panel conveyance.

The film joining system 1A includes a first inspection apparatus (measuring apparatus) 40 provided around the conveyor 10, a first rotary index 11 provided on the downstream side of the conveyance of the conveyor 10 A conveying device 112 for conveying the liquid crystal panel P from the end position 10b of the conveyor 10 to the first rotary start position 11a of the first rotary index 11 and a second rotary index 11 And a first joining apparatus 13 provided around the first joining apparatus 13.

The film joining system 1A includes a conveyor 27 provided on the downstream side of the panel conveyance of the first rotary index 11 and a conveyor 27 extending from the first rotary ending position 11b of the first rotary index 11 A second joining device 15 provided around the conveyor 27 and a conveyor 27 for conveying the liquid crystal panel P while reversing the front and back sides of the liquid crystal panel P to the starting position 27a of the conveyor 27, The second rotary index 16 provided on the downstream side of the panel transportation of the conveyor 27 and the second rotary start position 16a of the second rotary index 16 from the end position 27b of the conveyor 27, A film peeling apparatus 14, a third bonding apparatus 18 and a second inspection apparatus 19 provided around the second rotary index 16 and a second rotary index (Not shown) provided on the downstream side of the panel conveyance of the second rotary index 16 from the second rotary end position 16b of the liquid crystal panel P, And a transport device (29) for transporting the substrate.

The film joining system 1A sequentially performs a predetermined process on the liquid crystal panel P while conveying the liquid crystal panel P using the lines formed by the rotary indexes 11 and 16 and the conveyors 10 and 27 Conduct. The liquid crystal panel P is conveyed on a line in a state in which the front and back surfaces of the liquid crystal panel P are horizontally aligned and a sheet piece of a bonded sheet F5 cut out from the optical member sheet FX in a strip- (Corresponding to the optical member F1X). The respective parts of the film bonding system 1A are collectively controlled by the control device 25 as an electronic control device.

The first inspection apparatus 40 measures the external dimensions of the liquid crystal panel P. The external dimensions of the liquid crystal panel P are defined as the external dimensions of the first substrate P1 and the second substrate P2 of the liquid crystal panel P. For example,

The first substrate P1 and the second substrate P2 are cut out in accordance with the external dimensions of the display region P4 of the liquid crystal panel P and when cutting the first substrate P1 and the second substrate P2 Causes some dimensional error. Therefore, in this embodiment, the external dimensions of the liquid crystal panel P are measured in advance, and the size of the optical member F1X cut out from the optical member sheet FX is adjusted based on the measurement result.

11, the first inspection apparatus 40 includes four cameras 40a provided on the conveyance path of the conveyor 10 (the first inspection position 10a) P1 and the second substrate P2. The outer dimensions (the lengths of the long side and the short side) of the first substrate P1 and the second substrate P2 are respectively detected from the positions of the four corners of the first substrate P1 and the second substrate P2. The external dimensions of the liquid crystal panel P are detected for each liquid crystal panel P conveyed on the line. The data of the external dimensions of the liquid crystal panel P measured by the first inspection apparatus 40 are stored in the storage device 24 shown in Fig.

The transport apparatus 112 holds the liquid crystal panel P and freely transports the liquid crystal panel P in the vertical direction and the horizontal direction. The conveying device 112 conveys the liquid crystal panel P held by suction, for example, in a horizontal state at the first rotary start position 11a of the first rotary index 11, And sends and receives the liquid crystal panel P to the first rotary index 11.

The first rotary index 11 is a disk-like rotary table having a rotation axis along the vertical direction, and the first rotary index 11 is a rotary table in which the carrying position from the transfer device 112 is the first rotary start position 11a, . The first rotary index 11 has a first joint position 11c at a position rotated from the first rotary start position 11a by, for example, a predetermined angle in the right turn direction. At the first bonding position 11c, the third optical member F13 on the display surface side by the first bonding apparatus 13 is bonded. The first optical member joined body PA1 is formed by joining the third optical member F13 to the front and back surfaces of the liquid crystal panel P by the first joining apparatus 13. [

The first rotary index 11 has a first rotary terminating position 11b at a position rotated from the first joining position 11c by a predetermined angle in the right turning direction, for example. At this first rotary end position 11b, the first optical member joined body PA1 is taken out by the transfer device 26. Fig.

The transport device 26 holds the liquid crystal panel P (the first optical member assembly PA1) and freely transports it in the vertical direction and the horizontal direction. The conveying device 26 conveys the liquid crystal panel P held by suction, for example, to the starting position 27a of the conveyor 27, and reverses the front and back of the liquid crystal panel P And releases the attraction at the starting position 27a to transfer the liquid crystal panel P to the conveyor 27. [

A second bonding position 27c is set on the conveying path of the conveyor 27. The second bonding position 27c of the first optical member F11 on the backlight side by the second bonding apparatus 15 Junction is made. The first optical member (the first optical member joined body PA1) is provided with the first optical member (the first optical member joined body PA1) on the front and back surfaces of the liquid crystal panel P (the surface opposite to the surface on which the third optical member F13 is joined) F11 are bonded to each other to form a second optical member joined body PA2.

The transport apparatus 28 holds the liquid crystal panel P (second optical member assembly PA2) and freely transports the liquid crystal panel P in the vertical direction and the horizontal direction. The transport device 28 transports the liquid crystal panel P held by suction, for example, in a horizontal state at the second rotary start position 16a of the second rotary index 16, And transfers the liquid crystal panel P 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 the second rotary index 16 is a rotary table in which the carrying position from the transfer device 28 is set as the second rotary start position 16a, . The position of the second rotary index 16 rotated from the second rotary start position 16a by, for example, a predetermined angle in the right turn direction is referred to as a film peeling position 116c. At this film peeling position 116c, the peeling of the surface protective film F4a of the first optical member F11 by the film peeling apparatus 14 is performed.

The position of the second rotary index 16 rotated from the film peeling position 116c by, for example, a predetermined angle in the right turning direction is referred to as a third bonding position 116d. At the third bonding position 116d, bonding of the second optical member F12 on the backlight side by the third bonding apparatus 18 is performed. The second optical member F12 is bonded to the surface of the second optical member joined body PA2 on the first optical member F11 side by the third joining apparatus 18 so that the third optical member joined body PA3, .

The position of the second rotary index 16 rotated from the third bonding position 116d by, for example, a predetermined angle in the right-turning direction is referred to as a bonding inspection position 116e. In this bonding inspection position 116e, it is judged whether the position of the optical member F1X is appropriate (the positional deviation is within the tolerance range or not) by the inspection device 19 of the work (liquid crystal panel P) Or not) is performed. The work determined that the position of the optical member F1X relative to the liquid crystal panel P is not appropriate is discharged to the outside of the system by a not shown discharge portion.

The second rotary index 16 has a second rotary end position 16b at a position rotated from the joining inspection position 116e by a predetermined angle, for example, in the right rotation direction. At this second rotary end position 16b, the third optical member joined body PA3 is carried out by the transfer device 29. [

Thus, the joining process by the film joining system 1A is completed.

The first joining apparatus 13 is provided with the sheet of the bonded sheet F5 cut to a predetermined size on the third optical member sheet F3 with respect to the upper surface of the liquid crystal panel P conveyed to the first joining position 11c (The third optical member F13).

The first joining apparatus 13 is configured such that the third optical member sheet F3 is extended from the disk roll R1 on which the third optical member sheet F3 is wound while the third optical member sheet F3 is wound along the longitudinal direction thereof (Third optical member F13) of the bonded sheet F5 cut out from the third optical member sheet F3 are held by the sheet conveying apparatus 31, And a joining head 32 joining the sheet piece to the upper surface of the liquid crystal panel P conveyed to the first joining position 11c.

The sheet conveying apparatus 31 conveys the bonded sheet F5 using the separator sheet F3a as a carrier. The sheet conveying apparatus 31 includes a take-up unit 31a for holding the disc roll R1 around which the band-shaped third optical member sheet F3 is wound and for continuing the third optical member sheet F3 along its longitudinal direction, A cutting device (cut part) 31b for performing a half cut on the third optical member sheet F3 wound from the disk roll R1 and a third optical member sheet F3 subjected to the half cut at an acute angle A knife edge 31c for separating the bonded sheet F5 from the separator sheet F3a by winding and separator roll R2 for winding the separator sheet F3a which is taken alone through the knife edge 31c, And a mounting portion 31d.

Although not shown, the sheet conveying device 31 has a plurality of guide rollers which are wound around the third optical member sheet F3 along a predetermined conveying path. The width of the display region P4 of the liquid crystal panel P (the width of 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 third optical member sheet F3 The width of one side of the display area P4 corresponds to the length of the short side of the display area P4 in this embodiment).

The winding portion 31a positioned at the start point of the sheet conveying apparatus 31 and the winding portion 31d positioned at the end point of the sheet conveying apparatus 31 are driven in synchronism with each other. As a result, the winding section 31a continues to discharge the third optical member sheet F3 in its carrying direction, and the winding section 31d winds the separator sheet F3a through the knife edge 31c. The upstream side of the third optical member sheet F3 (separator sheet F3a) in the sheet conveying device 31 in the conveying direction is referred to as the sheet conveying upstream side and the conveying direction downstream side is referred to as the sheet conveying downstream side.

The cutting device 31b is arranged so that the third optical member sheet F3 has a length of the display region P4 in the longitudinal direction orthogonal to the sheet width direction ) Of the third optical member sheet F3 over the entire width along the sheet width direction, the length of the third optical member sheet F3 (corresponding to the length of the long side of the display area P4 in this embodiment) (Half cut is performed).

The cut position of the third optical member sheet F3 is adjusted based on the measurement result of the external dimensions of the liquid crystal panel P. [ 9) acquires the external dimension data of the liquid crystal panel P stored in the storage device 24 (see Fig. 9), and the third optical member F13 acquires the external dimension data of the liquid crystal panel P (The outer side of the substrate to which the third optical member F13 is bonded) of the third optical member sheet F3. The cutting device 31b applies a half cut to the third optical member sheet F3 at the cut position determined by the control device 25. [

The cutting device 31b is provided so that the third optical member sheet F3 (the separator sheet F3a) is not broken by the tension acting during the conveyance of the third optical member sheet F3 F3a of the separator sheet F3a), the half-cut is performed up to the vicinity of the interface between the adhesive layer F2a and the separator sheet F3a by adjusting the advancing / retreating position of the cutting blade.

As the cutting device 31b, a laser device in place of the cutting blade may be used. For example, a CO ₂ laser cutter may be used as the cutting device 31b. In this case, since the laser output required for cutting the optical member sheet FX is not so large, the laser cutter (cutting device 31b) provided in the first, second and third joining apparatuses 13, 15 and 18 It is preferable to connect to the same laser output device and divide the high output laser light output from the laser output device into three and feed the laser output to each laser cutter. As a result, the production system of the optical display device can be miniaturized as compared with a case where different laser output devices are connected to each of the three laser cutters.

The optical member main body F1a and the surface protection film F4a are cut in the thickness direction of the third optical member sheet F3 after the half cut so that the entire optical member sheet F3 in the sheet width direction A cut line extending across the width is formed. The third optical member sheet F3 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-off line. These sections become one sheet piece (third optical member F13) in the bonded sheet F5, respectively.

The knife edge 31c is located at a lower portion of the third optical member sheet F3 that is substantially horizontally conveyed from the left side to the right side in Fig. 10 and is located at least at its entire width in the sheet width direction of the third optical member sheet F3 Lt; / RTI > The knife edge 31c is wound around the separator sheet F3a side of the third optical member sheet F3 after the half-cut so as to be in sliding contact therewith.

The knife edge 31c winds the third optical member sheet F3 at an acute angle to the tip of the acute-angled shape. When the third optical member sheet F3 is folded at an acute angle at the tip end of the knife edge 31c, the separator sheet F3a is peeled off from the bonded sheet F5. At this time, the adhesive layer F2a (bonding surface with the liquid crystal panel P) of the bonding sheet F5 faces downward. The arcuate retaining surface 32a of the joining head 32 is abutted against the upper end of the knife edge 31c from the upper part of the joining head 31c at the separator peeling position 31e just above the front end of the knife edge 31c, The surface protective film F4a (the surface opposite to the bonding surface) of the sheet piece of the sheet F5 is bonded to the holding surface 32a of the bonding head 32. [

A pair of third detection cameras 36 for aligning the liquid crystal panel P in the horizontal direction on the first bonding position 11c are provided at the first bonding position 11c of the first rotary index 11 . A pair of fourth detection cameras (not shown) for aligning in the horizontal direction on the second bonding position 27c of the liquid crystal panel P are similarly provided at the second bonding position 27c of the conveyor 27 And a pair of fourth detection cameras (not shown) for horizontally aligning on the third bonding position 116d of the liquid crystal panel P are similarly provided at the third bonding position 116d of the second rotary index 16 (Not shown). The detection information of each detection camera is sent to the control device 25. [ It is also possible to use a sensor in place of each detection camera.

An alignment table 39 is provided on the rotary indexes 11 and 16 and on the conveyor 27 for enabling alignment of the liquid crystal panel P and horizontal alignment thereof. The alignment table 39 is driven and controlled by the control device 25 based on the detection information of each detection camera. Thereby, alignment of the liquid crystal panel P with respect to the respective bonding positions 11c, 27c, and 116d is performed.

By joining the bonding sheet F5 which has been aligned with the bonding head 32 to the liquid crystal panel P, the bonding deviation of the optical member F1X is suppressed and the optical member F1X in the direction of the optical axis is improved, and the uniformity and contrast of the optical display device are enhanced. It is also possible to provide the optical member F1X with high precision until the display region P4 so that the framing portion G (see Fig. 3) outside the display region P4 is narrowed to enlarge the display area and reduce the size of the device .

As described above, in the film joining system 1A in the above-described embodiment, the optical member sheet FX is cut to a predetermined length while the band-shaped optical member sheet FX is being unwound from the original roll R1 15 and 18 for joining the optical member F1X to the liquid crystal panel P after the optical member F1X is made into an optical member F1X and a liquid crystal panel P on the basis of the measurement results of the external dimensions of the liquid crystal panel P, And a control device 25 for determining the cut position of the optical member sheet FX in the apparatuses 13, 15, and 18. Therefore, it is possible to cut out the optical member F1X corresponding to the outer dimensions of the liquid crystal panel P, thereby narrowing the framing portion G (see Fig. 3) outside the display region P4 and enlarging the display area, It is possible to achieve miniaturization.

In the film joining system 1A, the joining apparatuses 13, 15 and 18 are constituted by a winding section 31a for winding the optical element sheet FX from the master roll R1 together with the separator sheet F3a, A cutting device 31b for cutting the optical member sheet FX to leave the separator sheet F3a to be an optical member F1X and a knife edge 31c for peeling the optical member F1X from the separator sheet F3a And a bonding head 32 holding and holding the optical member F1X on the holding surface 32a and bonding the optical member F1X held on the holding surface 32a to the liquid crystal panel P. Therefore, the continuous joining of the optical member F1X is facilitated, and the production efficiency of the optical display device can be increased. Since the joining head 32 has the arcuate holding surface 32a, the optical member F1X can be smoothly held by the tilting of the arcuate holding surface 32a, and at the same time, The optical member F1X can be surely bonded to the liquid crystal panel P by the tilting of the arcuate holding surface 32a.

[Fifth Embodiment]

12A and 12B are schematic diagrams of a bonding apparatus applied to the film bonding system of the fifth embodiment.

Fig. 12A is a view showing a state in which the optical member F1X is held on the bonding head 60, and Fig. 12B is a view showing a state in which the optical member F1X is bonded to the liquid crystal panel P. Fig.

The present embodiment differs from the fourth embodiment in that the joining apparatus of the fourth embodiment employs the joining head 32 having the arcuate holding surface 32a, In which a holding surface 60a of a bonding head 60 is used. Therefore, the structure of the bonding head 60 will be mainly described, and the same elements as those in the fourth embodiment will be denoted by the same reference numerals, and a detailed description thereof will be omitted.

The joining apparatus of this embodiment includes a joining head 60, a joining roller 62, a guide bar 61 for supporting the joining head 60 and the joining roller 62, And a driving device 63 for horizontally moving the panel P in a tilted state. Although not shown, the bonding apparatus of the present embodiment is provided with the same winding portion, cut portion, and knife edge (peeling portion) as shown in Fig.

The bonding head 60 has a flat holding surface 60a for holding the optical member F1X peeled from the separator sheet. The holding surface 60a is tilted with respect to the liquid crystal panel P by tilting the guide bar 61. [ The optical member F1X is positioned such that one end of the optical member F1X protrudes outward of the holding surface 60a and is attracted to the holding surface 60a. The optical member F1X is weak in the attraction force of the optical member F1X so that the optical member F1X can move in the horizontal direction while sliding on the holding surface 60a while being held on the holding surface 60a.

The joining roller 62 is disposed on the side of the joining head 60 and presses the optical member F1X protruding from the holding surface 60a of the joining head 60 by pressing the liquid crystal panel P tightly. When the guide bar 61 is moved in the horizontal direction by the driving device 63 in this state, the joining head 60 and the joining roller 62 horizontally move from the one end side to the other end side of the optical member F1X. As a result, the optical member F1X is gradually bonded to the liquid crystal panel P from the one end side by the joining roller 62. [

The bonding head 60 aligns the optical member F1X held on the holding surface 60a in the head moving direction, the perpendicular direction and the rotating direction in the horizontal direction. The bonding head 60 joins the optical member F1X held on the holding face 60a to the liquid crystal panel P based on the relative bonding position determined by the control device 25. [

Therefore, also in this embodiment, it is possible to provide an optical display device production system that can reduce the frame area around the display area to enlarge the display area and downsize the device.

[Other Forms]

In the above embodiment, a method of using the bonding heads 32 and 60 as the method of bonding the optical member F1X to the liquid crystal panel P has been described, but the present invention is not limited to this. A method of joining the optical member F1X separated from the separator sheet F3a by the knife edge 31c to the liquid crystal panel P directly with a bonding roll or the like without passing through the bonding heads 32 and 60 It's okay.

1, 101, 201, 1A: Film bonding system (production system of optical display device)
11: First rotary index (first rotary table)
11a: First rotary start position (carry-in position)
11b: first rotary end position (carry-out position)
11c: first bonding position (bonding position)
11d: second bonding position (bonding position)
16: second rotary index (second rotary table)
16a: Second rotary start position (carry-in position)
16b: second rotary end position (carry-out position)
16c: third bonding position (bonding position)
13: First bonding apparatus (bonding apparatus)
15: Second bonding apparatus (bonding apparatus)
18: Third bonding apparatus (bonding apparatus)
25: Control device
31: sheet conveying device
31a:
31b: Cutting device (cut part)
31c: Knife edge (peeling part)
31e: separator peeling position (peeling position)
32: joint head
32a:
33: Driving device
60: bonding head
60a:
111: Rotary index (rotary table)
111a: Rotary start position (carry position)
111b: Rotary end position (carry-out position)
111c: first bonding position (bonding position)
111d: second bonding position (bonding position)
111e: third bonding position (bonding position)
211: first rotary index (rotary table)
211a: First rotary start position (carry-in position)
211b: first rotary end position (carry-out position)
211c: first bonding position (bonding position)
212: second rotary index (rotary table)
212a: second rotary start position (carry-in position)
212b: second rotary end position (carry-out position)
212c: film peeling position
213: third rotary index (rotary table)
213a: Third rotary start position (carry-in position)
213b: Third rotary end position (carry-out position)
213c: second bonding position (bonding position)
214: fourth rotary index (rotary table)
214a: Fourth rotary start position (carry-in position)
214b: Fourth rotary end position (carry-out position)
214c: third bonding position (bonding position)
P: Liquid crystal panel (optical display part)
P4: Display area
F1: first optical member sheet (optical member sheet)
F2: 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: Second optical member (optical member)
F13: Third optical member (optical member)
F1X: optical member
R1: disk roll

Claims

A production system of an optical display device for bonding an optical member to an optical display component,
The optical member sheet having a width corresponding to the width of the display area of the optical display component is wound on a plurality of the optical display parts carried on the line from the original roll, And a bonding apparatus for cutting the optical member into a length corresponding to the length in the conveying direction of the display region to make the optical member and then joining the optical member to the optical display component,
In the bonding apparatus,
A winding portion for winding the optical member sheet together with the separator sheet from the master roll;
A cut portion that cuts the optical member sheet leaving the separator sheet to make the optical member;
A peeling section for peeling the optical member from the separator sheet;
A bonding head which holds the optical member on the holding surface and tilts the optical member held on the holding surface to the optical display component;
The bonding head is moved between a peeling position of the optical member from the separator sheet and a bonding position of the optical member to the optical display part, And a driving device for driving the head,
Wherein the optical member has an adhesive layer on a surface bonded to the optical display component,
Wherein the bonding head adheres and holds a surface of the optical member opposite to the adhesive layer to the holding surface,
Wherein the holding surface has a weaker adhesive force than the adhesive layer and is capable of repeatedly adhering and peeling off the surface of the optical member opposite to the adhesive layer side,
Wherein the bonding head tilts passively in accordance with continuous emission of the optical member without using the driving force of the driving device when bonding the optical member to the holding surface.

The method according to claim 1,
The peeling section separates the optical member from the separator sheet with the bonding surface of the optical member facing downward,
Characterized in that the bonding head is moved between the peeling position and the bonding position in a state in which an upper face opposite to the bonding face is adhered to the holding face and faces the bonding face downward, Production system of display device.

The method according to claim 1,
Wherein the bonding head aligns the optical member held on the holding surface in a horizontal direction (a moving direction of the bonding head, a direction perpendicular thereto, and a rotating direction of a vertical axis center).

The method according to claim 1,
Wherein said joining apparatus has a detection section for detecting a defect mark displayed on said optical member sheet and holds a part where said defect mark is detected by said bonding head to be returned to said breaking position.

The method according to claim 1,
And a rotary table for moving the optical display part to a carry-in position, a joint position and a carry-out position.

The method of claim 5,
Wherein the rotary table has a first rotation table corresponding to the joining of the optical member to one side of the front side of the optical display component and a second rotation table corresponding to the joining of the optical member to the other side of the front side of the optical display component, And the table is a table.

The method of claim 5,
Wherein the rotary table is provided in a single manner in correspondence with the joining of the optical member to both the front and back surfaces of the optical display part.

The method of claim 5,
Wherein a plurality of said rotary tables are provided corresponding to each of said plurality of optical members to be bonded to said optical display component.

The method of claim 7,
Wherein a plurality of said joining apparatuses are provided for each one kind of optical member so that the optical members are joined to a plurality of said optical display components simultaneously around said rotary table. system.

A production method of an optical display device for bonding an optical member to an optical display component,
The optical member sheet having a width corresponding to the width of the display area of the optical display component is drawn out from the disk roll with respect to the plurality of optical display parts carried on the line, And a joining step of joining the optical member to the optical display component after cutting the optical member into a length corresponding to the length in the carrying direction,
In the joining step,
A step of winding the optical member sheet together with the separator sheet from the disk roll;
A cutting step of cutting the optical member sheet while leaving the separator sheet as the optical member;
A peeling step of peeling the optical member from the separator sheet;
Holding the optical member on the holding surface of the bonding head and tilting the bonding head so as to bond the optical member held on the holding surface to the optical display component;
The joining head is moved by a driving device between a peeling position of the optical member from the separator sheet and a joining position of the optical member to the optical display component and the holding and joining of the optical member is performed And a driving step of driving the bonding head by the driving device so as to perform the bonding process,
Wherein the optical member has an adhesive layer on a surface bonded to the optical display component,
Wherein the bonding head adheres and holds a surface of the optical member opposite to the adhesive layer to the holding surface,
Wherein the holding surface has a weaker adhesive force than the adhesive layer and is capable of repeatedly adhering and peeling off the surface of the optical member opposite to the adhesive layer side,
Wherein the bonding head tilts passively in accordance with the continuous emission of the optical member without using the driving force of the driving device when bonding the optical member to the holding surface.

A production system of an optical display device for bonding an optical member to an optical display component,
A joining device for joining the optical member to the optical display part after cutting the optical member sheet into the optical member by cutting the optical member sheet to a predetermined length in the conveying direction while withdrawing the strip-shaped optical member sheet from the disc roll;
A measuring device for measuring an external dimension of the optical display part;
And a control device for determining a cut position of the optical member sheet in the joining apparatus based on the measurement result of the external dimensions.

The method of claim 11,
In the bonding apparatus,
A winding portion for winding the optical member sheet together with the separator sheet from the master roll;
A cut portion that cuts the optical member sheet leaving the separator sheet as the optical member;
A peeling section for peeling the optical member from the separator sheet;
And a bonding head for holding the optical member on the holding surface and for bonding the optical member held on the holding surface to the optical display component.

The method of claim 12,
And a second joining device for joining the front and back surfaces of the optical display component to each other, the joining device comprising: a first joining device for joining the left and right front sides of the optical display component;
The cut portion of the optical member sheet in the first joining apparatus and the cut portion of the optical member sheet in the second joining apparatus are all laser cutters,
The cut portion of the first joining device and the cut portion of the second joining device are connected to the same laser output device,
And a laser output from the laser output device is branched and supplied to the cut portion of the first joining device and the cut portion of the second joining device.