KR101654449B1 - Continuous manufacturing method for optical display panel, continuous manufacturing system for same, switching method, and feeding device - Google Patents

Abstract

The present invention provides a continuous manufacturing method of an optical display panel capable of saving space without impairing high-speed productivity. A continuous manufacturing method of an optical display panel includes a switching step of switching a roll of a new and old one, a carrier film transporting step of transporting a strip-shaped carrier film, an optical cell transporting step of transporting an optical cell, And a joining step of joining the optical film to the optical cell while conveying the optical cell to form an optical display panel, wherein the switching step is a step of moving the feeding axis a1 of the first feeding part and the feeding axis of the second feeding part (d <r01), which is smaller than the sum of the radius (r01) of the first roll (R1) when not used and the radius (r02) of the second roll (R2) + r02), and when the remaining radius r1 of the first roll satisfies the relationship of r1 < r02-d |, the step of setting the second roll on the feeding axis of the second feeding portion.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous manufacturing method of an optical display panel, a continuous manufacturing system thereof, a switching method and a feeding apparatus,

The present invention relates to a continuous manufacturing method of an optical display panel and a continuous manufacturing system of an optical display panel having a switching process of switching rolls of old and new rolls by being fed to a second roll to be fed next from the first roll being fed at present will be. The present invention also relates to a switching method for switching the roll, and a feeding device for feeding the roll.

There is known a manufacturing system in which an optical cell is continuously supplied, a polarizing film is continuously supplied from a roll, and a polarizing film is successively joined to an optical cell to continuously produce an optical display panel at a high speed. In this system, in order to continuously supply the polarizing film from the roll, a gap with the next roll is required. 2. Description of the Related Art [0002] Conventionally, two rolls are provided, and when one of the rolls has a small amount of film remaining, the other rolls can be continuously connected by connecting the rolls.

Japanese Patent Application Laid-Open No. 2011-123208 Japanese Patent Application Laid-Open No. 11-154340

However, if the number of iterations of the rolls is large, high-speed productivity is impaired. As a method of avoiding this, for example, in order to ensure high-speed productivity of the system, it is conceivable to lengthen the film itself wound on the roll. However, since the roll diameter is increased by lengthening the film wound on the roll, the space for installing the roll is increased. In the case of using a feeding device capable of installing two rolls as in Patent Documents 1 and 2, since the roll diameter is increased after forming a space between two rolls in general, it is particularly remarkable, Is increased dramatically.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems and provides a continuous manufacturing method of an optical display panel and a continuous manufacturing system of an optical display panel which can save space without impairing high-speed productivity. Also provided is a switching method and a feeding device capable of saving space without damaging high-speed production for use.

As a result of diligent studies for solving the above problems, the present invention has been completed as follows. That is, in the continuous manufacturing method of the optical display panel of the present invention,

A switching step of switching the rolls of the old and the new rolls by being fed to the second roll to be fed out from the first roll being fed at the present time,

A carrier film transporting step of transporting a strip-shaped carrier film, from which the optical film containing a pressure-sensitive adhesive is laminated,

An optical cell transporting step of transporting the optical cell,

A peeling step of folding the carrier film conveyed by the carrier film conveying step inward and peeling the optical film from the carrier film;

And a bonding step of bonding the optical film peeled off from the carrier film in the peeling step to the optical cell via the adhesive while carrying the optical cell, thereby forming an optical display panel,

In the switching step,

Wherein a distance d between the feeding axis of the first feeding portion in which the first roll is installed and the axis of the feeding shaft of the second feeding portion in parallel with the feeding axis of the first feeding portion and in which the second roll is provided, (D <r01 + r02) which is smaller than the sum of the radius r01 at the time of non-use and the radius r02 at the time when the second roll is not used,

And a step of installing a next roll on which the second roll is provided on the feeding shaft of the second feeding portion when the remaining radius r1 of the first roll satisfies the relation of r1 <r02-d |.

In this configuration, even if the roll diameter of the roll is increased, the installation space of the roll is not increased in proportion thereto, and the space-saving can be achieved without impairing the high-speed productivity of the optical display panel.

The inter-axis distance d is preferably not more than 90%, more preferably not more than 80%, and still more preferably not more than 70% of (r01 + r02).

In one embodiment of the present invention,

Wherein the first output portion and the second output portion are located between the output shaft of the first output portion and the output shaft of the second output portion and the output shaft of the first output portion and the output shaft of the second output portion, And a rotating step of rotating the feeding shaft of the second feeding part to exchange the position of the first roll with the position of the second roll.

In this configuration, the position of the first roll and the position of the second roll can be exchanged simply and quickly, and there is no danger in operation and the workability is remarkably improved.

According to an embodiment of the invention, there is a configuration in which the first feeding portion and the second feeding portion are arranged outside the conveying line without being superimposed under the conveying line conveying the optical cell.

In this configuration, there is no first outgoing portion (first roll) and second outgoing portion (second roll) under the conveying line of the optical cell, and it is difficult to install, for example, the conveying line of the optical cell at a high position, There is a case where the first leading portion and the second leading portion are provided at positions not overlapping with the conveying line of the optical cell in the vertical direction. In such a configuration, the height of the entire manufacturing system can be reduced. In this configuration, although the overall length of the manufacturing system is increased by reducing the height of the entire manufacturing system, the distance d between the feeding axis of the first feeding portion and the feeding axis of the second feeding portion can be set shorter Thus, the length (dimension) of the entire manufacturing system can be made as short as possible.

According to one embodiment of the present invention, the first feeding portion and the second feeding portion are arranged in a superposition below a conveying line for conveying the optical cell.

In this configuration, since the first leading portion (first roll) and the second leading portion (second roll) are provided under the conveying line of the optical cell, the entire length (dimension) of the manufacturing system can be shortened. In this configuration, although the height (dimension) of the entire manufacturing system is increased (in particular, when the rotation process is performed, the height of the entire manufacturing system becomes higher), the feed axis of the first feed section and the feed The distance d between the shafts can be set to be short, whereby the height (dimension) of the entire manufacturing system can be made as short as possible.

In one embodiment of the present invention,

A detecting step of detecting the remaining radius r1 of the first roll,

A determining step of determining whether or not the remaining radius r1 of the first roll in the detecting step satisfies a relation of r1 < r02-d |

And a notification step of notifying the switching when the relation r1 < r02-d | is satisfied in the determining step.

With this configuration, since the setting timing of the next roll can be automatically notified, quick response is possible.

In one embodiment of the present invention,

A stopping step of stopping the rotation of the feeding shaft of the first feeding portion after the installing step,

A cutting step of holding while holding the carrier film in a stopped state in the stopping step,

A rotating step of rotating the center of the line connecting the feeding axis of the first feeding portion and the feeding axis of the second feeding portion to exchange the position of the first roll and the position of the second roll,

A dipping step of bringing the rear end of the carrier film held in a state of being held after cutting in the cutting step and the front end of the carrier film of the second roll,

And releasing the holding state of the band-shaped carrier film after the damming process.

Further, another continuous inventive manufacturing system of an optical display panel,

A feeding device having a first feeding part having a feeding shaft provided with a first roll and a second feeding part having a feeding shaft in parallel to the feeding axis of the first feeding part and having a feeding shaft provided with the second roll,

A carrier film conveying section for conveying a belt-like carrier film having an optical film laminated with a pressure-sensitive adhesive, which is fed from a roll provided in the first or second feeding section,

An optical cell conveyance section for conveying the optical cell,

A peeling section for folding the carrier film conveyed by the carrier film conveying section inward and peeling the optical film from the carrier film;

And a bonding portion for bonding the optical film peeled off from the carrier film in the peeling portion to the optical cell via the adhesive while carrying the optical cell to form an optical display panel,

In the feeding device,

Wherein the distance d between the feeding axis of the first feeding portion and the feeding axis of the second feeding portion is larger than the sum of the radius r01 at the time of disconnection of the first roll and the radius r02 at the time of non- (D < r01 + r02).

In this configuration, when the remaining radius r1 of the first roll satisfies the relation of r1 < r02-d |, the second roll is provided on the feeding axis of the second feeding portion so that even if the roll diameter of the roll is increased The installation space of the roll is not increased in proportion thereto, and the space-saving can be achieved without impairing the high-speed productivity of the optical display panel.

In one embodiment of the present invention,

Wherein the first output portion and the second output portion are located between the output shaft of the first output portion and the output shaft of the second output portion and the output shaft of the first output portion and the output shaft of the second output portion, And a rotating mechanism for rotating the feeding shaft of the second feeding part to exchange the position of the first roll with the position of the second roll.

According to an embodiment of the present invention, there is a configuration in which the feeding device is arranged outside the conveying line by the optical cell conveying portion without being superimposed under the conveying line conveying the optical cell.

According to an embodiment of the present invention, there is provided a configuration in which the feeding device is arranged in a superimposed manner under the conveying line for conveying the optical cell by the optical cell conveying portion.

In one embodiment of the invention,

In the above-

A detecting unit for detecting a remaining radius r1 of the first roll;

A determination unit that determines whether the remaining radius r1 of the first roll in the detection unit satisfies a relationship of r1 < r02-d |

And when the determination section satisfies the relation of r1 < r02-d |, the notification section further has a notification section for notifying the switching.

In another aspect of the present invention, there is provided a switching method for switching the rolls of the old and new rolls by feeding a second roll to be fed next from the first roll being fed,

(D) between the first feeding axis in which the first roll is installed and the axis (d) of the second feeding axis in parallel with the first feeding axis and in which the second roll is provided is smaller than a radius (d <r01 + r02), which is smaller than the sum of the radius (r02) of the first roll and the radius (r02)

And installing the second roll on the second feeding axis when the remaining radius r1 of the first roll satisfies the relation of r1 <r02-d |.

The switching method of the present invention can be achieved by, for example, cutting a strip-shaped optical film (or a laminated optical film) fed from a roll to form a plurality of single optical films (or stacked optical films A method of producing a strip-shaped optical film by providing a strip-shaped film fed from a roll to a process such as coating, drawing and the like.

In one embodiment of the present invention,

Rotating the first feeding axis and the second feeding axis about a central axis parallel to the first feeding axis and the second feeding axis and between the first feeding axis and the second feeding axis, And a rotating process of exchanging the position of the second roll with the position of the second roll.

In one embodiment of the present invention,

A detecting step of detecting the remaining radius r1 of the first roll,

A determining step of determining whether or not the remaining radius r1 of the first roll in the detecting step satisfies a relation of r1 < r02-d |

When the relation r1 < r02-d | is satisfied in the determining step, it further includes a notification step of notifying the switching.

A feeding device according to another aspect of the present invention is a feeding device having a first feeding shaft on which a first roll is provided and a second feeding shaft on which a second roll is provided in parallel with the first feeding shaft,

Wherein a distance d between the first feeding axis and the second feeding axis is smaller than a sum of a radius r01 when the first roll is not used and a radius r02 when the second roll is not used, < r01 + r02).

In one embodiment of the present invention,

Rotating the first feeding axis and the second feeding axis about a central axis parallel to the first feeding axis and the second feeding axis and between the first feeding axis and the second feeding axis, And a rotating mechanism for exchanging the position of the second roll with the position of the second roll.

In one embodiment of the present invention,

A detecting unit for detecting a remaining radius r1 of the first roll;

A determination unit that determines whether the remaining radius r1 of the first roll in the detection unit satisfies a relationship of r1 < r02-d |

And when the determination section satisfies the relation of r1 < r02-d |, the notification section further has a notification section for notifying the switching.

The feeding apparatus of the present invention can be applied to, for example, a strip-shaped optical film (or a laminated optical film) fed from a roll by cutting a plurality of single optical films A system for producing a strip-shaped optical film, a system for producing a strip-shaped optical film by providing a strip-shaped film fed from a roll to a process such as coating and drawing.

According to the present invention, there is provided a continuous manufacturing method of an optical display panel and a continuous manufacturing system of an optical display panel, which can save space without impairing high-speed productivity. There is also provided a switching method and a feeding device capable of saving space without damaging high-speed production for use.

1 is a schematic view showing a continuous manufacturing system of an optical display panel according to Embodiment 1. Fig.
2 is a schematic view showing a continuous manufacturing system of an optical display panel according to Embodiment 2. Fig.
3 is a schematic view showing an example of a feeding device;
4A is a diagram showing a sequence example of a switching process;
4B is a diagram showing a sequence example of a switching process;
4C is a diagram showing a sequence example of a switching process;
FIG. 4D is a diagram showing a sequence example of a switching process; FIG.
4E is a diagram showing a sequence example of a switching process;
Fig. 5A is a view showing the speed condition of Embodiment 1. Fig.
5B is a view showing the speed condition of Comparative Example 1. Fig.

In the present embodiment, the form in which the optical film is formed on the carrier film is not particularly limited. For example, it may be constituted by winding in a roll shape. As the roll, for example, (1) a laminated optical film having a carrier film and a band-shaped optical film formed on the carrier film with a pressure-sensitive adhesive interposed therebetween is wound in a roll form. In this case, since the continuous production system of the optical display panel forms the optical film from the band-shaped optical film, the band-shaped optical film and the pressure-sensitive adhesive are cut at predetermined intervals (half cut of the laminated optical film) . The optical film after cutting the strip-shaped optical film is in a sheet state of a predetermined size, for example, a rectangular shape (rectangular, square).

(2) A laminated optical film having a carrier film and a strip-shaped first optical film formed on the carrier film with a pressure-sensitive adhesive interposed therebetween is wound in a roll form (a roll of a laminated optical film in which a perforated line is formed) . Examples of the optical film include a polarizing film, a brightness enhancement film, a retardation film, and an optical film in which two or more thereof are laminated.

For example, the first roll R1 shown in Fig. 1 has a first carrier film 12 and a strip-shaped first polarizing film (an example of an optical film) 11 laminated on the first carrier film 12 The first laminated optical film 10 is wound in a roll form. The first polarizing film 11 has a film body 11a and a pressure-sensitive adhesive layer 11b.

The polarizing film is formed, for example, with a polarizer (thickness of about 1.5 to 80 占 퐉) and a polarizer protective film (thickness of about 1 to 500 占 퐉) on one surface or both surfaces of the polarizer without an adhesive or an adhesive. As the other films constituting the first laminated optical film 11, for example, a retardation film such as a? / 4 plate and a? / 2 plate (thickness is generally 10 to 200 占 퐉), a viewing compensation film, And surface protective films. The thickness of the laminated optical film may range, for example, from 10 탆 to 500 탆. The pressure-sensitive adhesive interposed between the polarizing film and the carrier film is not particularly limited, and examples thereof include acrylic pressure-sensitive adhesives, silicone pressure-sensitive adhesives, and urethane pressure-sensitive adhesives. The layer thickness of the pressure-sensitive adhesive is preferably in the range of, for example, 10 탆 to 50 탆. As a peeling force of the pressure-sensitive adhesive and the carrier film, for example, 0.15 (N / 50 mm wide sample) is exemplified, but the present invention is not limited thereto. The peel force is measured in accordance with JIS Z0237.

As the carrier film, conventionally known films such as a plastic film (for example, a polyethylene terephthalate film, a polyolefin film, etc.) can be used. Further, if necessary, a suitable one conventionally used may be used, such as one obtained by coating with a suitable releasing agent such as a silicone type, a long chain alkyl type, a fluorine type or molybdenum sulfide.

In the optical display panel, at least an optical film is bonded to one side or both sides of an optical cell via an adhesive, and a driving circuit is incorporated if necessary. The optical cell includes, for example, a liquid crystal cell and an organic EL cell. As the liquid crystal cell, any type of liquid crystal cell such as a vertically aligned (VA) type or an in-plane switching (IPS) type can be used. As the organic EL cell, for example, any type of top emission type, bottom emission type, double emission type, or the like can be used. The liquid crystal cell P shown in Fig. 1 is a structure in which a liquid crystal layer is sealed between a pair of substrates arranged opposite to each other (a first substrate Pa and a second substrate Pb).

&Lt; Embodiment 1 >

Hereinafter, a continuous manufacturing system of the optical display panel according to the present embodiment will be described concretely with reference to the drawings, but the present invention is not limited to this embodiment mode. A liquid crystal cell will be described as an optical cell, and a polarizing film will be described as an optical film. Hereinafter, Fig. 1 is a schematic view of a continuous manufacturing system of an optical display panel according to the present embodiment. Fig. 3 is a view for explaining a feeding device. Fig. 4A to 4E are diagrams for explaining the procedure of the switching process (process).

The continuous manufacturing system 1 for an optical display panel according to the present embodiment is provided with a feeding device 30, a first carrier film conveying section 20, a first peeling section 40, a liquid crystal cell conveying section 80, And the first bonding roll 50 (the first bonding roll 50a and the first driving roll 50b), the second liquid crystal cell carrying portion, the second carrier film carrying portion, the second peeling portion, 2 joining portions (second joining rolls, second driving rolls), and an optical display panel conveying portion. The liquid crystal display panel LD in which the polarizing film 111 is bonded from the lower side (first side Pa) of the liquid crystal cell P and the polarizing film 111 is subsequently bonded is reversed (front-side inversion, And the polarizing film is bonded from the lower side (second surface Pb) of the liquid crystal cell P.

The liquid crystal cell conveying section 80 conveys the liquid crystal cell P from the upstream of the conveyance to the joining position of the first joining section 50. In the present embodiment, the liquid crystal cell conveying section 80 comprises a conveying roller or an attracting plate. The liquid crystal cell P is conveyed to the downstream side of the production line by rotating the conveying roller or by conveying the attracting plate.

The feeding device 30 includes a first feeding portion 33 having a feeding axis a1 on which the first roll R1 is mounted and a second feeding portion 33 having a feeding axis a2 parallel to the feeding axis a1 and on which the second roller R2 is provided (See Fig. 3). The feeding device 30 of the present embodiment is disposed between the feeding axis a1 of the first feeding portion 33 and the feeding axis a2 of the second feeding portion 34 and is between the feeding axis a1 of the first feeding portion 33 The feeding axis a1 of the first feeding portion 33 and the feeding axis a2 of the second feeding portion 34 are rotated about the central axis 31a parallel to the feeding axis a2 of the second feeding portion 34, (Corresponding to the position of a1) of the first roll R1 and a position (corresponding to the position of a2) of the second roll R2. In Fig. 3, the rotation locus of the feeding axes a1 and a2 in this rotation is denoted by D1, and the outermost rotational locus of the first and second rolls R1 and R2 is denoted by D2. 1, the feeding device 30 has a configuration (not superposed) which is not located under the conveying line X for conveying the liquid crystal cell by the liquid crystal cell conveying section 80. [ The length of the apparatus from the feeding device 30 to the first bonding portion 50 is denoted by L and the height of the apparatus from the lower end of the feeding device 30 to the carrying line X is denoted by H. In Embodiment 1, the device length L is long, but the device height H can be made low. By using the feeding device 30 of the present embodiment, the device length L can be made shorter than when it is not used.

The feeding apparatus 30 includes a detecting section 35 for detecting the remaining radius r1 of the first roll R and a detecting section 35 for detecting the remaining radius r1 of the first roll R1 at the detecting section 35 in the range of r1 < r02- And a notifying section 37 for notifying the switching when the relation of r1 < r02-d1 | is satisfied in the determining section 36 (see Fig. 3 Reference). As another embodiment, there is also a configuration in which the detection unit 35, the determination unit 36, and the notification unit 37 are not provided, and these components are not essential components.

5A shows the relationship between the remaining radius r1 of the first roll R1, the initial radius r01 when not used, the initial radius r02 when the second roll R2 is unused, the feeding axis a1 of the first feeding portion 33, Axis distance d1 of the feeding axis a2 of the feeding shaft 34, respectively.

The detecting unit 35 may be, for example, an ultrasonic thickness sensor, a laser displacement sensor, a weight sensor, a photoelectric (light receiving or transmitting) sensor, or an electrostatic sensor. A detection signal from the detection unit 35 is sent to the determination unit 36. When the detection signal is received, the determination unit 36 determines that the relationship r1 <| r02-d1 | is satisfied. This determination signal is sent to the notification unit 37. When the determination signal is received, the notification unit 37 outputs sound, light, monitor display, and the like, for example. The notification unit 37 is configured to include, for example, a speaker, a lighting device, a monitor, and the like. The judging unit 36 and the notifying unit 37 may be constituted by a dedicated device or a dedicated circuit, or may be constituted by a cooperative action of a computer and a program for executing the respective procedures, and may be constituted by firmware.

The first carrier film conveying section 20 is configured such that a strip-shaped polarizing film 11, which is fed from the first and second rolls R1 and R2 provided in the first feeding section 33 or the second feeding section 34, (The laminated optical film 10 is transported). In the present embodiment, the first carrier film transport section 20 is formed by leaving (without cutting) the strip-shaped first carrier film 12 of the first laminated optical film 10 fed from the first roll R1, And a first cut portion 20 for cutting the first polarizing film 11 at a predetermined interval to form a first polarizing film 111 on the first carrier film 12. [ The first polarizing film 111 is peeled from the first carrier film 12 at the first peeling section 40 to be described later and supplied to the first bonding section 50. Therefore, the first carrier film transfer section 20 has a first dancer roll 22, a first cut section 25 and a first cut section 25 (see FIG. 1) between the first cut section 25 and the feed device 30, The second dancer roll 24, and the first winding section 28 on the downstream side of the conveyance of the sheet. The first carrier film conveying section 20 is also provided with a feed roll (conveying direction) for conveying the first carrier film 12 (the first laminated optical film 10) to the upstream side of conveyance or downstream of the conveyance direction from the first peeling section 40 (Not shown).

The first dancer roll 22 is provided so that the first carrier film 12 on the downstream side of the first dancer roll 22 when performing the switching process from the first roll R1 to the second roll R2 can be transported without stopping.

The first cut portion 25 is formed in such a manner that the first laminated optical film 10 is fixed from the first carrier film 12 side in the adsorption unit 26 and the first polarized film 11 is formed in a shape corresponding to the liquid crystal cell P And the first polarizing film 111 is formed on the first carrier film 12. Then, Examples of the first cut portion 25 include a cutter and a laser device.

The second dancer roll 24 has a function of maintaining the tension of the first carrier film 12 in each process such as a conveying process and a bonding process. The first carrier film transport section 20 transports the first carrier film 12 through the second dancer roll 24. A feed roll 27 is disposed between the second dancer roll 24 and the first cut 25.

The first peeling section 40 is formed by folding the first carrier film 12 conveyed by the first carrier film conveying section 20 inward and separating the first polarizing film 111 from the first carrier film 12, . The peeled first polarizing film 111 is fed to the bonding position of the first bonding portion 50. In the present embodiment, as the first peeling section 40, a sharp knife edge portion is used at the tip end portion, but the present invention is not limited to this.

The first winding section 28 has a winding roller (not shown), and winds the first carrier film 12 on which the first polarizing film 111 is peeled off to the winding roller.

The first bonding portion 50 bonds the first polarizing film 111 peeled off from the first carrier film 12 to the liquid crystal cell P (first surface Pa) via the adhesive while conveying the liquid crystal cell P, Thereby forming a display panel LD. In the present embodiment, the first joining portion 50 is constituted by a first joining roller 50a and a first driving roller (supporting roller) 50b.

The first polarizing film 111 is sent to the bonding position by the winding path of the first carrier film 12 (or the feed roller not shown) by the first winding section 28. On the other hand, the liquid crystal cell P is conveyed by the rotation of the first driving roller 50b and the first joining roller 50a, and at the same time, the first polarizing film 111 is bonded to the liquid crystal cell surface.

<Conversion step>

Next, the conversion process will be described. First, a first roll R1 is provided in the feeding device 30 and provided for manufacturing. The second roll R2 is installed in the feeding device 30 when the remaining radius r1 becomes smaller in the course of using the first roll R1 and the following condition is satisfied. The conditions are as follows.

When the distance d1 between the feeding axis a1 of the first feeding portion 33 and the feeding axis a2 of the second feeding portion 34 is larger than the initial radius r01 of the first roll R1 when not used and the unused second roller R2 When the remaining radius r1 of the first roll R1 satisfies the relation of r1 < r02-d1 |, the second roll R2 is in a relationship d1 < r01 + r02 smaller than the sum of the initial radius r02 of the first roll R1, (The installing step).

The switching process will be described with reference to Figs. 4A to 4E. The continuous manufacturing system 1 is provided with a holding portion 36 for holding the first carrier film 12 (the first laminated optical film 10) in a stopped state, which is disposed downstream of the feeding device 30 on the conveying downstream side And a nip roll portion 38 disposed on the downstream side of the conveying downstream side of the holding portion 36 for holding the first carrier film 12 (optical film laminate 10).

First, after the above-mentioned installation step, the rotation of the feeding axis a1 of the first feeding portion 33 is stopped (stopping step). Then, the first laminated optical film 10 is held in the non-rotating state in the nip roll section 38, and then, as shown in Fig. 4A, the holding section 36 having the pair of bars 36a, 1 laminated optical film (10). The bars 36a and 36b in the original position move to engage the first laminated optical film 10. Then, while holding the first carrier film 12 (first laminated optical film 10) in a stopped state in the stopping step, it is cut while being cut (cutting step). As shown in Fig. 4B, the rear end B of the first laminated optical film 10 is held by the bar 36a, and the bar 36b is returned to the original position. Then, it is rotated about the central axis 31a between the feeding axis a1 of the first feeding portion 33 and the feeding axis a2 of the second feeding portion 34 and parallel to the feeding axis a1 and the feeding axis a2 , The position (a1) of the first roll R1 and the position (a2) of the second roll R2 are exchanged (rotating process, Fig. 4C). Here, the rotation may be manual or automatic rotation by a motor not shown.

Then, the rear end portion B of the first laminated optical film 10 held in a state of being cut after cutting in the cutting step is connected to the front end portion F of the laminated optical film of the second roll R2. As shown in Fig. 4E, the rear end portion B and the front end portion F are arranged with their end faces facing each other, and fixed with a tape (not shown). Subsequently, the holding state of the first laminated optical film 10 (strip-shaped first carrier film 12) is released after the damming process (releasing step). The bar 36a is returned to the original position as shown in Fig. 4E, and the film can be transported by the rotation of the nip roll portion 38. Fig. Thus, the laminated optical film of the second roll R2 connected to the first laminated optical film 10 is transported to the downstream side. Further, the first roll R1 is removed from the feeding axis a1.

Next, a case where a polarizing film is bonded to the other surface (second surface Pb) of the liquid crystal cell P will be described. The second liquid crystal cell conveying section conveys the liquid crystal cell P to which the first polarizing film 111 is bonded by the first joining section 50 and supplies the liquid crystal cell P to the second joining section. The second liquid crystal cell conveying section is provided with a reversing mechanism (not shown) for reversing the liquid crystal cell P to which the first polarizing film 111 is bonded (inversion by front and back, and by 90 degrees if necessary). As another embodiment, a rotation mechanism (not shown) for horizontally rotating the liquid crystal cell P to which the first polarizing film 111 is bonded may be provided. In this case, the second polarizing film is bonded to the ceiling side of the liquid crystal cell P.

As described above, various means for bonding the polarizing film to the other surface of the liquid crystal cell P can be used as the various means, apparatus, and the like. The second carrier film conveying portion can be constituted by the same device as the first carrier film conveying portion and the second joining portion can be constituted by the same device as the first joining portion. The second peeling portion can be configured similarly to the first peeling portion.

The liquid crystal display panel carrying section (not shown) can be composed of a conveying roller, an attracting plate, or the like, and conveys the liquid crystal display panel LD manufactured by the second joining section downstream. An inspection device for inspecting the liquid crystal display panel LD may be provided on the downstream side of the conveyance. The inspection purpose and inspection method of this inspection apparatus are not particularly limited.

(Continuous manufacturing method)

The continuous manufacturing method of the optical display panel according to the present embodiment includes a switching step of switching the rolls of the old and new rolls from the currently fed first roll R1 to the second roll R2 to be fed out next, , A liquid crystal cell transporting step of transporting the liquid crystal cell P, and a transporting step of transporting the strip-shaped first carrier film 12 transported by the carrier film transporting step 1) peeling the first polarizing film (111) from the first carrier film by folding the first polarizing film (1) on the first carrier film (12) in the peeling step while carrying the liquid crystal cell (P) 111) to the liquid crystal cell P via a pressure-sensitive adhesive to form the liquid crystal display panel LD.

The switching process is carried out in such a manner that the feeding axis a1 of the first feeding portion 33 in which the first roll R1 is installed and the second feeding portion 33 in parallel with the feeding axis a1 of the first feeding portion 33, (D1 < r01 + r02) in which the inter-axis distance d1 of the feeding axis a2 of the first roll 34 is smaller than the sum of the radius r01 of the first roll R1 when not used and the radius r02 of the second roll R2 when not used, And installing the second roll R2 on the feeding axis a2 of the second feeding portion 34 when the remaining radius r1 of the first roll R1 satisfies the relationship of r1 <| r02-d1 |.

The switching process is carried out between the feeding axis a1 of the first feeding portion 33 and the feeding axis a2 of the second feeding portion 34 and the feeding axis a1 and the second feeding portion 34 of the first feeding portion 33 The feeding axis a1 of the first feeding portion 33 and the feeding axis a2 of the second feeding portion 34 are rotated around the central axis 31a parallel to the feeding axis a2 of the first roll R1, (a1) of the second roll R2 and the position (a2) of the second roll R2.

The changing step is a step of detecting whether or not the remaining radius r1 of the first roll R1 in the detecting step satisfies the relationship of r1 < r02-d1 |, by detecting the remaining radius r1 of the first roll R1 And a notification step of notifying the switching when the relation r1 < r02-d1 | is satisfied in the determining step.

When the polarizing film 111 is bonded to the other substrate of the liquid crystal cell P, the liquid crystal cell P has a turning process of rotating and vertically inverting the liquid crystal cell P. The pivoting step is a step of horizontally rotating and vertically inverting the liquid crystal cell P to which the first polarizing film 111 is bonded by 90 degrees. Also, as the pivoting process, the liquid crystal cell P may be inverted about one axis which is not parallel to either the long side or the short side so that the positional relationship between the long side and the short side of the liquid crystal cell P is reversed. The second bonding step for bonding the second polarizing film is the same as the first bonding step. That is, in the first bonding step, the first polarizing film is bonded to the first surface of the liquid crystal cell in the first bonding direction, and in the second bonding step, in the second bonding direction which is the direction orthogonal to the first bonding direction And the second polarizing film is bonded to the second surface of the liquid crystal cell.

&Lt; Embodiment 2 >

The continuous manufacturing system of the second embodiment is shown in Fig. 2, the feeding device 30 is arranged below the conveying line X for conveying the liquid crystal cell by the liquid crystal cell conveying portion 80. In Fig. Though the device length L is shorter in the second embodiment than in the first embodiment, the device height H is high. By using the feeding device 30, the height H of the device can be made lower than when it is not used. The other constituent elements are the same as those in the first embodiment, and a detailed description thereof will be omitted.

<Other Embodiments>

In the above embodiment, the laminated optical film fed from the roll is cut at a predetermined interval (half cut), but the present invention is not particularly limited to this configuration. For example, the laminated optical film fed from the roll may be subjected to defect inspection and cut (so-called skipped cut) so as to avoid defects based on the inspection result. It is also possible to read the defect information previously given to the laminated optical film (before being rolled), and cut off to avoid defects based on the defect information. The defect information may be marked so that the defect position can be known.

Further, the strip-shaped polarizing film of the first roll may be previously cut and formed on the first carrier film. That is, as the first roll, a roll of a laminated optical film having a so-called perforated line may be used. In this case, since the first cutting means is unnecessary, the tact time can be shortened. The second roll may be a roll of a laminated optical film having a perforated line as in the case of the first roll.

Although the optical film is bonded to both surfaces of the optical film in the above embodiment, it is also possible to bond the optical film to only one side of the optical cell.

<Examples>

The delivery device 30 of the embodiment is shown in Fig. 5A, the first radius r1 of the first roll R1 is 100 mm, the initial radius r01 when not used is 400 mm, the initial radius r02 when the second roll R2 is not used is 400 mm, Axis distance d1 between the feeding axis a1 and the feeding axis a2 of the second feeding portion 34 is 500 mm. At this time, the device length d2 of the first feeding portion 33 and the second feeding portion 34 was 1000 mm.

The feeding apparatus of the comparative example is shown in Fig. 5B. In Fig. 5B, the first roll R1 and the second roll R2 are provided in the first feeding portion and the second feeding portion in the unused state, respectively. The initial radii r01 and r02 at the time of unused are 400 mm and the distance p1 between the feeding axis a1 of the first feeding portion 33 and the feeding axis a2 of the second feeding portion 34 is 1000 mm. At this time, the device length p2 of the first feed portion 33 and the second feed portion 34 was 1800 mm.

From the above results, it can be confirmed that the length d2 of the feeding apparatus of the embodiment can be made much smaller than that of the comparative example, and thus it has been confirmed that the length L or height H of the entire manufacturing system can be reduced.

10: First laminated optical film
12: strip-type first carrier film
11: strip-type first polarizing film
111: first polarizing film
20: First carrier film transport section
30: Feeding device
40: First peel portion
50: first joint
80: first liquid crystal cell conveying part
P: liquid crystal cell
LD: liquid crystal display panel

Claims (14)

A switching step of switching from a current first roll to a next second roll by connecting a carrier film fed out from the first roll and a carrier film fed out from the second roll fed next,
A carrier film transporting step of transporting a strip-shaped carrier film on which an optical film containing a pressure-sensitive adhesive, which is fed from the first roll or the second roll,
An optical cell transporting step of transporting the optical cell,
A peeling step of folding the carrier film conveyed by the carrier film conveying step inward and peeling the optical film from the carrier film;
And a bonding step of bonding the optical film peeled off from the carrier film in the peeling step to the optical cell via the adhesive while carrying the optical cell, thereby forming an optical display panel,
In the switching step,
Wherein a distance d between the feeding axis of the first feeding portion in which the first roll is installed and the axis of the feeding shaft of the second feeding portion in parallel with the feeding axis of the first feeding portion and in which the second roll is provided, (D <r01 + r02) which is smaller than the sum of the radius r01 at the time of non-use and the radius r02 at the time when the second roll is not used,
And a step of installing a next roll on which the second roll is provided on the feeding shaft of the second feeding portion when the remaining radius r1 of the first roll satisfies the relation of r1 <r02-d |
In the switching step,
A detecting step of detecting the remaining radius r1 of the first roll,
A determining step of determining whether or not the remaining radius r1 of the first roll in the detecting step satisfies a relation of r1 < r02-d |
And a notification step of notifying the switching when the relationship of r1 < r02-d | is satisfied in the determining step. The method according to claim 1,
Wherein the first output portion and the second output portion are located between the output shaft of the first output portion and the output shaft of the second output portion and the output shaft of the first output portion and the output shaft of the second output portion, And a rotating step of rotating the feeding shaft of the second feeding part to exchange the position of the first roll with the position of the second roll. The optical display device according to any one of claims 1 to 3, wherein the first feeding portion and the second feeding portion are formed in a continuous manufacturing process of an optical display panel disposed outside the conveying line without overlapping under the conveying line conveying the optical cell Way. The continuous manufacturing method of an optical display panel according to claim 1 or 2, wherein the first projecting portion and the second projecting portion are superimposed under a conveying line for conveying the optical cell. 3. The method according to claim 1 or 2,
A stopping step of stopping the rotation of the feeding shaft of the first feeding portion after the installing step,
A cutting step of holding while holding the carrier film in a stopped state in the stopping step,
A rotating step of rotating the center of the line connecting the feeding axis of the first feeding portion and the feeding axis of the second feeding portion to exchange the position of the first roll and the position of the second roll,
A dipping step of bringing the rear end of the carrier film held in a state of being held after cutting in the cutting step and the front end of the carrier film of the second roll,
And releasing the holding state of the carrier film after the damming process. A feeding device having a first feeding part having a feeding shaft provided with a first roll and a second feeding part having a feeding shaft in parallel to the feeding axis of the first feeding part and having a feeding shaft provided with the second roll,
A carrier film conveying section for conveying a belt-like carrier film having an optical film laminated with a pressure-sensitive adhesive, which is fed from a roll provided in the first or second feeding section,
An optical cell conveyance section for conveying the optical cell,
A peeling section for folding the carrier film conveyed by the carrier film conveying section inward and peeling the optical film from the carrier film;
And a bonding portion for bonding the optical film peeled off from the carrier film in the peeling portion to the optical cell via the adhesive while carrying the optical cell to form an optical display panel,
In the feeding device,
Wherein the distance d between the feeding axis of the first feeding portion and the feeding axis of the second feeding portion is larger than the sum of the radius r01 at the time of disconnection of the first roll and the radius r02 at the time of non- (D < r01 + r02)
In the above-
A detecting unit for detecting a remaining radius r1 of the first roll;
A determination unit that determines whether the remaining radius r1 of the first roll in the detection unit satisfies a relationship of r1 < r02-d |
Wherein when the relationship of r1 < r02-d | is satisfied in the determination section, the notification section notifies the switching. 7. The apparatus according to claim 6,
Wherein the first output portion and the second output portion are located between the output shaft of the first output portion and the output shaft of the second output portion and the output shaft of the first output portion and the output shaft of the second output portion, And a rotating mechanism for rotating the feeding shaft of the second feeding portion to exchange the position of the first roll and the position of the second roll. 8. The optical scanning device according to claim 6 or 7, wherein the feeding device is a continuous optical display panel disposed outside the conveying line, not disposed superimposed under the conveying line conveying the optical cell by the optical cell conveying portion Manufacturing system. The continuous manufacturing system of an optical display panel according to claim 6 or 7, wherein the feeding device is disposed superimposed under the conveying line for conveying the optical cell by the optical cell conveying unit. The continuous manufacturing system of an optical display panel according to claim 6 or 7, further comprising a holding portion which is disposed downstream of the feeding device and holds the carrier film in a stopped state. A switching method for switching from a current first roll to a next second roll by connecting a carrier film fed out from a first roll and a carrier film fed out from a second roll fed next,
(D) between the first feeding axis in which the first roll is installed and the axis (d) of the second feeding axis in parallel with the first feeding axis and in which the second roll is provided is smaller than a radius (d <r01 + r02), which is smaller than the sum of the radius (r02) of the first roll and the radius (r02)
And installing the second roll on the second feeding shaft when the remaining radius r1 of the first roll satisfies a relation of r1 < r02-d |
In the switching method,
A detecting step of detecting the remaining radius r1 of the first roll,
A determining step of determining whether or not the remaining radius r1 of the first roll in the detecting step satisfies a relation of r1 < r02-d |
And a notification step of notifying the switching when the relationship of r1 < r02-d | is satisfied in the determining step. And a second feeding shaft which is parallel to the first feeding shaft and on which the second roll is provided,
Wherein a distance d between the first feeding axis and the second feeding axis is smaller than a sum of a radius r01 when the first roll is not used and a radius r02 when the second roll is not used, < r01 + r02)
A detecting unit for detecting a remaining radius r1 of the first roll;
A determination unit that determines whether the remaining radius r1 of the first roll in the detection unit satisfies a relationship of r1 < r02-d |
And when the determination section satisfies the relationship of r1 < r02-d |, the notification section notifies the switching.

delete delete

Images