JP5667522B2 - Optical display device manufacturing system and optical display device manufacturing method - Google Patents

Description

  The present invention relates to an optical display device manufacturing system and an optical display device manufacturing method.

  Conventionally, an optical display panel in which a polarizing film is bonded to a liquid crystal panel has been widely manufactured, and when a liquid crystal panel and a polarizing film are bonded, a long roll polarizing film is unwound to obtain a sheet-like liquid crystal. A manufacturing system for pasting with a panel has been proposed.

  For example, Patent Literature 1 and Patent Literature 2 disclose an apparatus for laminating an optical film. According to the optical film sticking apparatus of Patent Document 1, sticking can be performed by controlling the width direction of the belt-like film or film piece and the width direction of the substrate to correspond to each other. Moreover, according to the optical member bonding apparatus of patent document 2, it is possible to cut | disconnect an optical member, leaving a separator, and these apparatuses can bond an optical film efficiently.

  Patent Document 3 discloses a laminating machine that joins a plurality of original fabric rolls with a turret.

JP 2004-361744 A (published on December 24, 2004) JP 2009-61498 A (published March 26, 2009) JP-A-8-208083 (released on August 13, 1996)

  However, the conventional manufacturing system has a problem that the production efficiency of the optical display panel is insufficient or the apparatus is enlarged.

  This will be specifically described below. In the manufacturing system disclosed in Patent Literature 1 and Patent Literature 2, an unwinding portion in which an original fabric roll of a polarizing film is installed is provided at one location. When replacing a used original roll with a new original roll, the operator cuts the polarizing film of the used original roll and removes it from the unwinding section, and then puts the new original roll into the unwinding section. Install and bond the polarizing film of the new original roll and the polarizing film remaining in the line. Such replacement work takes a long time, and during that time, it is necessary to stop the operation of the manufacturing system, which is one factor in reducing the production efficiency of the optical display panel.

  Moreover, in the laminating machine described in Patent Document 3, the original fabric roll is spliced with a turret. Such a laminating machine needs to secure a space for the turret to rotate. For this reason, in order to install a turret, a wide installation place is needed and a manufacturing system will be enlarged.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a manufacturing system for a miniaturized optical display device that can shorten the manufacturing time of the optical display device. is there.

  When the present inventors examined the target manufacturing system, when the polarizing film was bonded to a liquid crystal panel, it discovered that it was desirable to bond from the lower surface of a liquid crystal panel.

  FIGS. 15A and 15B are diagrams showing the vector direction of airflow (down flow) when a polarizing film is bonded to the upper surface of the liquid crystal panel. In FIGS. 15 (a) and 15 (b), region A is a region where an unwinding part and the like for unwinding the polarizing film are installed, region B is a region through which the polarizing film mainly passes, and region C is This is an area in which a winding unit and the like for winding the protective film removed from the polarizing film are installed. In the figure, clean air is supplied from a HEPA (High Efficiency Particulate Air) filter 40. In FIG. 15A, since the grating 41 through which clean air can pass is installed, the airflow can move in the vertical direction via the grating 41. On the other hand, in FIG. 15B, since the grating 41 is not installed, the airflow moves along the floor after contacting the bottom floor in FIG. 15B.

  15A and 15B, regions A to C are arranged in the 2F (second floor) portion, and a transport mechanism for transporting the liquid crystal panel is installed between 1F and 2F. Since the clean air from the HEPA filter 40 is blocked by the areas A to C, it is difficult to generate an airflow in the vertical direction with respect to the liquid crystal panel passing through the 2F portion. On the other hand, the airflow vector in the horizontal direction is large (vector density is high). That is, it was found that the air flow toward the upper side of the liquid crystal panel transported by the transport mechanism is less likely to occur, and the rectification environment has deteriorated.

  On the other hand, the vector direction of the airflow (down flow) when a polarizing film is bonded to the lower surface of the liquid crystal panel is shown in FIGS. In the case of the bottom-attached type, it can be seen that the clean air supplied from the HEPA filter 40 goes to the transport mechanism between 1F and 2F without being blocked by the areas A to C, and the rectifying environment is not blocked. In FIG. 16A, since the grating 41 through which clean air can pass is installed, the airflow can move in the vertical direction via the grating 41. Based on these findings, the present inventors have found that when a polarizing film is bonded to a liquid crystal panel, the liquid crystal panel is bonded from both sides from below.

The present inventors have completed the present invention in consideration of the above findings. That is, in a manufacturing system for manufacturing an optical display device, a transport mechanism for transporting a liquid crystal panel, and two bonding mechanisms for bonding a polarizing film to the lower surface of the liquid crystal panel, the bonding mechanism is a protective film. A first unwinding unit for unwinding the polarizing film whose surface is protected; a second unwinding unit for unwinding a polarizing film for replenishment connected to the polarizing film unwound from the first unwinding unit; The peeling part which peels a protective film from a film, the bonding part which bonds the polarizing film from which the protective film was peeled to the lower surface of a liquid crystal panel, and the winding part which winds up the protective film peeled from the said polarizing film In addition, the transport mechanism includes a reversing unit for reversing the liquid crystal panel having the polarizing film bonded to the lower surface by one bonding mechanism, and the first unwinding unit and the second unwinding unit. Is movable horizontally with respect to the winding core direction of the polarizing film, the first unwinding unit and the second unwinding unit is characterized in that it is arranged together under the above transfer mechanism.

In the manufacturing system, a polarizing film is bonded to the lower surface of the liquid crystal panel by one bonding mechanism with respect to the liquid crystal panel conveyed by the conveyance mechanism. The liquid crystal panel is inverted by the inverting section, stuck polarizing film on the bottom surface of the liquid crystal panel by the other bonding mechanism, a polarizing film is stuck without deteriorating the rectifying environment in the manufacturing system on both sides of the liquid crystal panel An optical display device is manufactured.

  Moreover, the bonding mechanism of the manufacturing system is provided with two unwinding portions, a first unwinding portion and a second unwinding portion, which are provided side by side. For this reason, when the remaining amount of the polarizing film in the first unwinding portion is almost exhausted, the polarizing film in the second unwinding portion is used without replacing the polarizing film roll in the first unwinding portion with a new roll. Thus, the polarizing films of both unwinding portions can be immediately connected to each other, and the polarizing film can be unwound quickly. Therefore, since the time required for the replacement work of the original fabric roll can be reduced, the manufacturing time of the optical display device can be shortened.

  Moreover, since both unwinding parts can move horizontally in the core direction of the polarizing film, when replacing the polarizing film, a new polarizing film original roll is installed in the unwinding part moved in the horizontal direction. can do. Therefore, unlike a laminating machine having a conventional turret, the unwinding portion does not move upward. For this reason, the range which an unwinding part moves can be made small, and the manufacturing system reduced in size can be provided.

In the optical display device manufacturing system of the present invention, the first unwinding unit and the second unwinding unit can be installed with respect to the core direction of the polarizing film so that a new polarizing film roll can be installed. And can be moved horizontally.
Another optical display device manufacturing system according to the present invention includes a transport mechanism for transporting a liquid crystal panel, and two bonding mechanisms for bonding a polarizing film to the lower surface of the liquid crystal panel. A first unwinding unit for unwinding the polarizing film whose surface is protected by the film, a second unwinding unit for unwinding the polarizing film for replenishment connected to the polarizing film unwound from the first unwinding unit, The peeling part which peels a protective film from the said polarizing film, the bonding part which bonds the polarizing film from which the protective film was peeled to the lower surface of a liquid crystal panel, and the winding part which winds up the protective film peeled from the said polarizing film The transport mechanism is provided with a reversing unit for reversing the liquid crystal panel having the polarizing film bonded to the lower surface by one bonding mechanism, and the first unwinding unit and the second unwinding unit. The new The polarizing film roll can be moved horizontally with respect to the core direction of the polarizing film, and the first unwinding part and the second unwinding part are arranged in parallel with each other. It is characterized by having.
In the optical display device manufacturing system of the present invention, it is preferable that the transport mechanism has a linear transport direction of the liquid crystal panel.

  Unlike a manufacturing system in which the transport direction of the liquid crystal panel is bent at a right angle, if the transport direction of the liquid crystal panel is a straight line, the structure of the manufacturing system can be designed to be a structure along the straight line. An efficient manufacturing system can be provided.

  Moreover, in the manufacturing system of the optical display device of the present invention, the first polarizing film and the second unwinding, in which the film holding and cutting part and the first connecting material bonding part are the polarizing films unwound from the first unwinding part. It arrange | positions via the conveyance position of the 2nd polarizing film which is a polarizing film unwound from the part, and a 2nd connection material bonding part is provided in the unwinding direction of the 1st polarizing film from the said film holding | maintenance cutting part. The second connecting material bonding portion is disposed toward the first polarizing film, the film holding / cutting portion includes a film holding portion and a cutting machine, and the film holding portion is And an adsorption mechanism that adsorbs or desorbs the first polarizing film, the cutting machine cuts both the first polarizing film and the second polarizing film, and the first connecting material bonding portion is a second one. Adsorb polarizing film In addition to the adsorbing part provided with the adsorbing mechanism for desorption, a connecting material holding part for holding the connecting material to be bonded beyond the cutting line of the polarizing film is provided. Along with the adsorbing part having an adsorbing part for adsorbing or desorbing the first polarizing film in the unwinding direction and the second polarizing film in the direction opposite to the unwinding direction cut by the cutting machine, the film is pasted beyond the cutting line of the polarizing film. A connecting material holding part that holds the connecting material to be combined is provided, and the first polarizing film in the unwinding direction cut by the cutting machine and the second polarizing film in the direction opposite to the unwinding direction are cut from each other. Of the both polarizing films in which the connecting material is pasted across the cutting line of both polarizing films by the first connecting material bonding portion and the connecting material is bonded by the first connecting material bonding portion. On the reverse side, the second connecting material bonding part It is preferable to be bonded the connecting member beyond the cutting line of the film.

In a manufacturing system for manufacturing an optical display device, a transport mechanism for transporting a liquid crystal panel, and two bonding mechanisms for bonding a polarizing film to the lower surface of the liquid crystal panel, the surface of the bonding mechanism is protected by a protective film. From the 1st unwinding part which unwinds the protected polarizing film, the 2nd unwinding part which unwinds the polarizing film for replenishment connected with the polarizing film unwound from the 1st unwinding part, and the above-mentioned polarizing film Including a peeling portion for peeling the protective film, a bonding portion for bonding the polarizing film from which the protective film has been peeled to the lower surface of the liquid crystal panel, and a winding portion for winding the protective film peeled off from the polarizing film, The transport mechanism includes a reversing unit that reverses a liquid crystal panel having a polarizing film bonded to the lower surface by one bonding mechanism, and the first unwinding unit and the second unwinding unit are polarized light. The film can be moved horizontally with respect to the core direction of the film, the first unwinding part and the second unwinding part are arranged in parallel with each other, and the film holding and cutting part and the first connecting material bonding part are The first polarizing film, which is a polarizing film unwound from the first unwinding part, and the second polarizing film, which is a polarizing film unwound from the second unwinding part, are arranged via a transport position, and A second connecting material bonding portion is provided in the unwinding direction of the first polarizing film from the film holding and cutting portion, and the second connecting material bonding portion is disposed toward the first polarizing film, and The film holding / cutting unit includes a film holding unit and a cutting machine, and the film holding unit includes an adsorption mechanism that adsorbs or desorbs the first polarizing film. The cutting machine includes the first polarizing film and the second polarizing film. Cut both polarizing films The first connecting material bonding portion is a connecting material that holds the connecting material bonded beyond the cutting line of the polarizing film, together with an adsorbing portion having an adsorption mechanism for adsorbing or desorbing the second polarizing film. The holding | maintenance part is provided, The said 2nd connection material bonding part adsorb | sucks or remove | desorbs the 1st polarizing film of the unwinding direction cut | disconnected by the said cutting machine, and the 2nd polarizing film of a reverse direction to an unwinding direction. A first polarizing film in an unwinding direction cut by a cutting machine, including a suction member provided with a suction mechanism, and a connecting material holding unit that holds a connecting material to be pasted beyond the cutting line of the polarizing film; In the state where the cut surfaces of the second polarizing film in the direction opposite to the unwinding direction are opposed to each other, the first connecting material bonding portion pastes the connecting material across the cutting lines of both polarizing films, The connecting material was bonded by the first connecting material bonding portion. It is characterized by bonding a connecting material across the cutting line of both polarizing films to the opposite surface of both polarizing films by the said 2nd connecting material bonding part.
In the optical display device manufacturing system of the present invention, it is preferable that the transport mechanism has a linear transport direction of the liquid crystal panel.
In the optical display device manufacturing system of the present invention, it is preferable that the cutting machine cuts both the first polarizing film and the second polarizing film in an oblique direction with respect to the width direction of the polarizing film.
Moreover, the manufacturing method of the optical display device which concerns on this invention is a manufacturing method of the optical display apparatus using the said manufacturing system of an optical display apparatus, Comprising: The 1st unwinding process which unwinds a polarizing film from a 1st unwinding part. A first connecting step of connecting the polarizing film unwound from the first unwinding part and the polarizing film unwound from the second unwinding part, and unwinding the polarizing film from the second unwinding part. and Volume 2 out process, the during the second volume out process, is moved horizontally Volume 1 out portion to one of the winding core direction of the polarizing film, the polarizing film of the first winding out part new polarization replace the film, and the first exchange step of moving horizontally relative to the other core the direction of the polarizing film of the first winding out part, and the polarizing film unwound from the second winding out part, Volume 1 A second connecting step for connecting the polarizing film unwound from the unwinding part and the first unwinding part? A step out third volume unwinding polarizing film, between the third volume out process, is moved horizontally Volume 2 out section to one of the winding core direction of the polarizing film, the second winding out part the polarizing film was replaced with a new polarizing film, and a second replacement step of moving horizontally Volume 2 out section with respect to the other winding core direction of the polarizing film.

As described above, the optical display device manufacturing system of the present invention includes the transport mechanism for transporting the liquid crystal panel and the two bonding mechanisms for bonding the polarizing film to the lower surface of the liquid crystal panel. A first unwinding unit for unwinding the polarizing film whose surface is protected by the protective film, and a second unwinding unit for unwinding the supplementary polarizing film connected to the polarizing film unwound from the first unwinding unit. And a peeling part for peeling the protective film from the polarizing film, a bonding part for bonding the polarizing film from which the protective film was peeled to the lower surface of the liquid crystal panel, and a winding for winding the protective film peeled from the polarizing film. A reversing unit for reversing a liquid crystal panel having a polarizing film bonded to the lower surface by one bonding mechanism, and the first unwinding unit and the second winding. Outing Is movable horizontally with respect to the winding core direction of the polarizing film, the first unwinding unit and the second unwinding unit are those that are parallel to each other below the conveying mechanism.

  Therefore, the bonding mechanism of the manufacturing system is provided with two unwinding portions, the first unwinding portion and the second unwinding portion, and these are provided side by side. For this reason, when the remaining amount of the polarizing film in the first unwinding portion is almost exhausted, the polarizing film in the second unwinding portion is used without replacing the polarizing film roll in the first unwinding portion with a new roll. Thus, the polarizing films of both unwinding portions can be immediately connected to each other, and the polarizing film can be unwound quickly. Therefore, since the time required for the replacement work of the original fabric roll can be reduced, the manufacturing time of the optical display device can be shortened.

  Moreover, since both said unwinding parts can move horizontally in the core direction of a polarizing film, when replacing | exchanging polarizing films, the original fabric roll of a new polarizing film in the unwinding part moved to the said horizontal direction Can be installed. Therefore, unlike a laminating machine having a conventional turret, the unwinding portion does not move upward. For this reason, it is possible to reduce the range in which the unwinding part moves and to provide an effect that a miniaturized manufacturing system can be provided.

It is a side view which shows the manufacturing system of the optical display apparatus which concerns on this invention. It is a side view which shows the structure of the knife edge vicinity in the said manufacturing system. It is a top view which shows the manufacturing system of the optical display apparatus which concerns on this invention. (A) is a perspective view which shows the state before the unwinding part which concerns on this invention moves, (b) is a perspective view which shows the state after the unwinding part which concerns on this invention moved. It is a perspective view which shows the film connection part and cutting machine which concern on this invention. It is a perspective view which shows the cutting bonding part which concerns on this invention. (A)-(h) is process drawing which shows the connection process by the manufacturing system which concerns on this invention. It is a side view which shows the modification of the manufacturing system which concerns on this invention. It is a perspective view which shows the film holding | maintenance cutting part which concerns on this invention. It is a perspective view which shows the modification of the film holding | maintenance cutting part which concerns on this invention. (A) And (b) is a perspective view which shows the 1st connection material bonding part which concerns on this invention. (A)-(h) is process drawing which shows the connection process by the manufacturing system which concerns on this invention. (A)-(d) is a top view which shows operation | movement of the unwinding part which concerns on this invention. It is a flowchart which shows the manufacturing method which concerns on this invention. It is a side view which shows the velocity vector of the airflow in an upper sticking type manufacturing system. It is a side view which shows the velocity vector of the airflow in the underlay type manufacturing system similar to this invention.

  An embodiment of the present invention will be described with reference to FIGS. 1 to 14 as follows.

[Configuration of optical display device manufacturing system]
FIG. 1 is a side view showing an optical display device manufacturing system 100 according to the present invention. The manufacturing system 100 unwinds the laminated film 10, peels the protective film 10 a from the laminated film 10, and bonds the polarizing film 10 b to one side of the liquid crystal panel 2. Thereafter, the manufacturing system 100 bonds the polarizing film 110b to the opposite surface of the liquid crystal panel 2, and the optical display device is manufactured. As the liquid crystal panel 2, a known liquid crystal panel may be used, and a known liquid crystal panel in which an alignment film is disposed between a substrate such as a glass substrate and a liquid crystal layer may be used.

  The manufacturing system 100 is roughly classified and includes a transport mechanism 12 and two bonding mechanisms. As each member of the 1st pasting mechanism, unwinding part (1st unwinding part) 1, unwinding part (2nd unwinding part) 1a, film connection part (1st film connection part) 3, film connection Part (second film connecting part) 13, guide roller 16, half cutter 21, support base 22, knife edge (peeling part) 23, nip rollers 24 and 24 a, and take-up part 25 (100 of the manufacturing system). Right). In the present specification, “•” means “and”.

  Furthermore, a second bonding mechanism is provided on the left side of the manufacturing system 100. The manufacturing system 100 includes an unwinding part (first unwinding part) 101, an unwinding part (second unwinding part) 101a, a film connecting part (first film connecting part) 103, and a film connecting part (second film connecting part). Part) 113, a guide roller 116, a half cutter 121, a support stand 122, a knife edge 123, nip rollers 124 and 124a, and a winding part 125.

  As shown in FIG. 1, the first bonding mechanism and the second bonding mechanism are installed below the transport mechanism 12. The first bonding mechanism is such that the nip rollers 24 and 24a are positioned upstream of the transport path of the liquid crystal panel 2, and the second bonding mechanism is such that the nip rollers 124 and 124a are positioned downstream of the transport path of the liquid crystal panel 2. Has been placed.

  Of both the bonding mechanisms, the nip rollers 24 and 124 are provided near the upper surface of the liquid crystal panel 2, and the nip rollers 24 a and 124 a are provided at a possible height on the lower surface of the liquid crystal panel. On the other hand, each member other than the nip rollers in both the bonding mechanisms is provided below the transport mechanism 12. Further, the transport mechanism 12 includes a reversing unit 26. Hereinafter, each member will be described.

  The unwinding part 1 and the unwinding part 1a are devices for holding and unwinding the raw roll of the laminated film 10 in which the protective film 10a protects the polarizing film 10b through the adhesive layer. The tension applied to can be adjusted. The laminated film 10 unwound from the unwinding unit 1 is sent to the line side via each guide roller 16. The line refers to the path through which the laminated film 10 is conveyed, and the line direction refers to the direction in which the laminated film 10 is conveyed. On the other hand, the unwinding part side means the direction opposite to the line side. The same applies to the line of the laminated film 20 that is unwound from the unwinding portion 1a.

  A raw roll R1a is installed in the unwinding portion 1a, and the raw roll R1a is used for replenishment. When the remaining amount of the raw roll R1 is almost exhausted, the raw roll R1a is unwound and the laminated films 10 and 20 are connected. Details of the unwinding portions 1 and 1a will be described later with reference to FIG.

  Hereinafter, although the member of a 1st bonding mechanism is mainly demonstrated, it is the same also about the member of the same name in a 2nd bonding mechanism unless there is particular notice.

  The laminated film 10 is a film in which a protective film 10 a is laminated on a polarizing film 10 b bonded to the liquid crystal panel 2 via an adhesive layer, and is sent out via a guide roller 16. It can be said that the laminated film 10 is a polarizing film whose surface is protected by a protective film. In this Embodiment, what is necessary is just to adjust the speed | rate, tension | tensile_strength, etc. which unwind the laminated | multilayer film 10 suitably. What is necessary is just to change suitably the width | variety of the unwinding part 1, 1a, 101, 101a with the width | variety of the laminated | multilayer film 10 to be used, and it is not specifically limited. For example, an unwinding portion having a width capable of installing the laminated film 10 having a film width of 300 mm or more and 1200 mm or less may be used.

  The laminated film 10 has a three-layer structure, and can adopt a known structure, and includes a protective film 10a, an adhesive layer (not shown), and a polarizing film 10b. As an example of the configuration of the polarizing film 10b, a TAC (triacetylcellulose) film or the like is bonded as a protective film on both sides of the polarizer film, and an adhesive layer is applied (laminated) to one or both TAC films. The structure by which the protective film 10a was laminated | stacked on the adhesion layer is mentioned.

  As the polarizer film, a polyvinyl alcohol film dyed with iodine or the like and a film stretched in a uniaxial direction can be used. Also, in place of the above films, partially formalized polyvinyl alcohol film, ethylene / vinyl acetate copolymer partially saponified film, hydrophilic polymer film such as cellulose film, etc., dehydrated polyvinyl alcohol and polyvinyl chloride A polyene-oriented film such as a dehydrochlorinated product can also be used.

Moreover, the width | variety of the polarizing film 10b can be 300 mm or more and 1200 mm or less. In the manufacturing system 100, first, the polarizing film 10b is bonded with the short side of the liquid crystal panel 2 along the transport direction D1 of the liquid crystal panel 2, and then the length of the liquid crystal panel 2 in the transport direction D1 of the liquid crystal panel 2. The polarizing film 110b is bonded in a state where the sides are along. Therefore, the width of the polarizing film 10 b is a length corresponding to the long side of the liquid crystal panel 2, and the width of the polarizing film 110 b is a length corresponding to the short side of the liquid crystal panel 2.

  Although total thickness of the protective film 10a, the adhesion layer, and the polarizing film 10b is not specifically limited, As an example, it can be 100 micrometers or more and 500 micrometers or less. In addition, generally the thickness of a polarizer film is 10 micrometers or more and 50 micrometers or less among polarizing films 10b * 110b. Furthermore, in addition to the above three layers, other layers may be included within the practical range of the laminated film 10.

  The adhesive layer is used to bond the polarizing film 10b and the liquid crystal panel 2 after the protective film 10a is removed. The pressure-sensitive adhesive used for the pressure-sensitive adhesive layer is not particularly limited, and an acrylic, epoxy, polyurethane-based pressure-sensitive adhesive can be used, but it needs to be easily peeled off from the protective film 10a. For this reason, the kind of adhesive is selected according to the protective film 10a. In addition, what is necessary is just to change the thickness of the adhesion layer suitably, for example, can be 0.5 micrometer or more and 75 micrometers or less.

  A known protective film may be used as the protective film 10a. Specifically, a polyester film, a polyethylene terephthalate film, or the like can be used. Although it does not specifically limit as thickness of the said protective film, The protective film of 5 micrometers or more and 100 micrometers or less can be used preferably. The width | variety of the protective film 10a can be 300 mm or more and 1200 mm or less similarly to the polarizing film 10b. In addition, the protective film 10a may be generally called a peeling film or a separator.

  The transport mechanism 12 transports the liquid crystal panel 2, and the nip rollers (bonding portions) 24 and 24 a, which are bonded to the polarizing film 10 b (or 20 b), the reversing portion 26, and the nip rollers 124 and 124 a are connected to the liquid crystal panel 2. Transport. The nip rollers 24 a and 124 a are arranged at the same height so as to be aligned with the transport mechanism 12.

  The transport mechanism 12 has a roller structure, but the transport mechanism 12 is not limited to the roller structure as long as the liquid crystal panel can be transported. The liquid crystal panel 2 is transported by the transport mechanism 12 from the right side to the left side (nip rollers 24 and 24a side) in the drawing. The film connecting parts 3 and 13 (film connecting parts 103 and 113) and a cutting machine not shown in FIG. 1 will be described later.

  Although the laminated film 10 is conveyed through each guide roller 16, since the liquid crystal panel 2 has a sheet shape, it is necessary to cut the long polarizing film 10b and the adhesive layer before the polarizing film 10b is bonded. That is, it is necessary to half-cut the laminated film 10. The members for performing the half cut are the half cutter 21 and the support base 22. The support base 22 is disposed at a position in contact with the protective film 10 a and is installed to make it difficult for the laminated film 10 to be shaken. Moreover, the half cutter 21 is installed in the position which cut | disconnects the adhesion layer and the protective film 10a, and the polarizing film 10b and an adhesive layer are cut | disconnected by the half cutter 21 in the state in which the protective film 10a side was supported by the support stand 22. Is done. At this time, the protective film 10a is not cut. That is, the laminated film 10 is half cut.

  Next, the bonding between the polarizing film 10b and the liquid crystal panel 2 will be described with reference to FIG. FIG. 2 is a side view showing a structure in the vicinity of the nip rollers 24 and 24a. As shown in FIG. 2, the laminated film 10 is half-cut by a half cutter 21, and the polarizing film 10 b is attached to the protective film via an adhesive layer (not shown). That is, before reaching the nip rollers 24 and 24a, the polarizing film 10b is cut by the half cutter 21 to a size preferable for bonding with the liquid crystal panel 2. On the other hand, the protective film 10a is not cut.

  The protective film 10a is peeled off by the knife edge 23. The knife edge 23 has a substantially triangular shape as a side surface thereof, and the side surface shape is smooth with no corners. The bottom surface (pressing surface) of the knife edge 23 is provided with an inclination and is disposed along the conveying direction of the protective film 10a. The knife edge 23 has a small frictional force with the protective film 10a, and is surface-treated with a member that allows the protective film 10a to be easily peeled off from the adhesive layer, such as diamond-like carbon. As a result, the protective film 10 a moves following the knife edge 23, is peeled off from the laminated film 10 at the tip of the knife edge 23, is removed, and is then wound around the winding unit 25. As a material constituting the knife edge 23, a metal material, a resin material, or the like can be applied, and is not particularly limited. However, stainless steel, aluminum, a resin material, and the like are recommended in terms of corrosion resistance, and specifically, SUS304, SUS420. Etc.

  The winding unit 25 is a device that winds the protective film 10a, and the basic structure is the same as that of the unwinding units 1 and 1a except that it is used for winding. In addition, the structure provided with the two winding parts similarly to the unwinding part 1 * 1a may be sufficient.

  The nip rollers 24 and 24a are for bonding the liquid crystal panel 2 transported by the transport mechanism 12 and the polarizing film 10b (or 20b) by pressure bonding. The pressure at the time of bonding by the nip rollers 24 and 24a can be adjusted as appropriate.

  The liquid crystal panel 2 having the polarizing film 10 b bonded to the lower surface is conveyed to the reversing unit 26 by the conveyance mechanism 12. The reversing unit 26 is a member that reverses the liquid crystal panel, and may be designed with a known structure such as a robot arm. FIG. 3 is a plan view showing the manufacturing system 100 toward the transport mechanism 12.

  As shown in the figure, in the manufacturing system 100 according to the present embodiment, as a preferable mode, the liquid crystal panel is transported in a straight line direction, which is different from the manufacturing system in the transport direction that bends at right angles such as the L-shaped direction. . If it is this linear structure, the conveyance mechanism 12 can be arrange | positioned linearly and the 1st bonding mechanism and 2nd bonding mechanism which are arrange | positioned under the conveyance mechanism 12 can be arrange | positioned. For this reason, the structure of the manufacturing system 100 can be designed into a structure along a straight line, and the manufacturing system excellent in area efficiency can be provided. Since the optical display device is normally manufactured in a clean room, and the manufacturing cost of the clean room is high, the manufacturing system 100 having excellent area efficiency is useful.

  The reversing unit 26 includes a suction unit. FIG. 3 shows a state in which the upper surface of the liquid crystal panel 2 is sucked by the suction unit of the reversing unit 26. The adsorbing unit only needs to be able to adsorb and desorb the liquid crystal panel 2, and the reversing unit 26 uses an air suction type adsorbing unit. After the liquid crystal panel 2 is attracted, the liquid crystal panel 2 is reversed by the robot arm of the reversing unit 26. In the inverted liquid crystal panel 2, the polarizing film 10 b bonded to one side is located on the upper surface of the liquid crystal panel 2.

  The reversing unit 26 reverses the liquid crystal panel 2 and also changes the direction along the transport direction of the liquid crystal panel 2. In the manufacturing system 100, the liquid crystal panel 2 is rectangular, and first, the short side is transported along the transport direction, and the polarizing film 10 b is bonded to the lower surface of the liquid crystal panel 2. Thereafter, the liquid crystal panel 2 is reversed by the reversing unit 26 so that the long side of the liquid crystal panel 2 is along the transport direction. This is because the polarizing film used in the manufacturing system 100 has the absorption axis arranged in the film transport direction, and thus the absorption axes of the polarizing film bonded to both surfaces of the liquid crystal panel 2 are orthogonal to each other.

  For the liquid crystal panel 2 that is inverted and whose long side is along the transport direction, the protective film is formed from the laminated film 110 that is unwound from the unwinding portion 101 in the second bonding mechanism, similarly to the first bonding mechanism. 110a is peeled off. Thereafter, the polarizing film 110b is bonded to the lower surface of the liquid crystal panel 2 through the adhesive layer by the nip rollers 124 and 124a. Thus, an optical display device in which the polarizing film is bonded to both surfaces of the liquid crystal panel 2 is manufactured. Since two polarizing films are bonded together from the lower surface to both surfaces of the liquid crystal panel 2, the rectifying environment around the manufacturing system 100 is not hindered.

  FIG. 4A is a perspective view showing a state in which the unwinding portions 1 and 1a are installed in the manufacturing system 100. FIG. For convenience of explanation, other members such as the film connecting portion 3 are not shown. Although the unwinding part 1 * 1a in this invention is demonstrated, it is the same also about the unwinding part 101 * 101a.

  The unwinding part 1 and the unwinding part 1a which concern on this invention can move horizontally with respect to the core direction of the polarizing film 10b. The winding core direction of the polarizing film is the winding core direction of the original fabric roll R1 in the unwinding portion 1, and the winding core direction of the original fabric roll R1a in the unwinding portion 1a, both of which are indicated by the direction D2. In FIG. 4A, the remaining amount of the raw roll R1 is in a reduced state.

  FIG. 4B is a perspective view showing a state in which the unwinding portion 1 is moved horizontally with respect to the direction D2. The unwinding unit 1 is moved by a slide type moving mechanism 27 provided at the bottom of the unwinding unit 1. In FIG. 4B, since the unwinding part 1 has moved only in the direction D2, the state of FIG. 4B can be rephrased as a state in which the unwinding part has been moved along the direction D2. Of course, the unwinding portion 1 can also move in the direction of the core of the polarizing film in the direction opposite to the direction D2. The unwinding unit 1 can be moved by the moving mechanism 27 toward the unwinding unit 1a or away from the unwinding unit 1a. The unwinding part 1a also includes a moving mechanism 27a at the bottom, and can move similarly to the unwinding part 1.

  The unwinding portions 1 and 1a can move in the direction D2, and unlike the laminating machine having a turret, the unwinding portion 1 does not move upward. For this reason, it is not necessary to secure a space in which the unwinding unit 1 moves between the unwinding unit 1 and the transport mechanism 12, and the range in which the unwinding unit 1 moves can be reduced. The same applies to the unwinding portion 1a. For this reason, the manufacturing system 100 reduced in size can be provided.

  Furthermore, the manufacturing system 100 includes the unwinding portions 1 and 1a, and when the remaining amount of the raw roll R1 is almost exhausted, the laminated film 10 and the raw roll R1a unwound from the raw roll R1. Can be easily connected to the laminated film 20 unwound from the wire. By this connection, the polarizing film 10b and the polarizing film 20b are connected. In addition, this connection can be performed by an operator, and can also be performed using the film connecting portions 3 and 13 as described later.

  From the viewpoint of promptly replacing the raw roll in the unwinding portions 1 and 1a, the distance between the unwinding portion 1 and the unwinding portion 1a is preferably 0.5 m or more and 5 m or less. More preferably, it is 1 m or more and 3 m or less. The distance between the unwinding part 1 and the unwinding part 1a refers to the distance between the unwinding parts 1 and 1a that connect the locations where the cores of the raw rolls R1 and R1a are installed.

  FIG. 5 is a perspective view showing the film connecting portion 3 and the cutting machine 7. The film connecting part 3 includes adsorption parts 4 and 4a and a cutting and bonding part 5.

  The adsorption portions 4 and 4a are members for adsorbing and holding the polarizing film. The adsorbing parts 4 and 4a have a flat plate shape and are provided with a plurality of adsorbing mechanisms 9 on the surface thereof. The adsorption mechanism 9 is not particularly limited as long as the polarizing film can be adsorbed, and a configuration in which the polarizing film is adsorbed by sucking air with a pump can be adopted.

  The cutting bonding part 5 is rotatable and has a plurality of surfaces. Specifically, the cutting and bonding unit 5 has a polygonal shape and is rotatable. Furthermore, as a preferable form, it is movable in the vertical direction with respect to the laminated film 10 (polarizing film 10b). By being movable in the vertical direction with respect to the laminated film 10 (polarizing film 10b), when the cutting and bonding part 5 rotates, the cutting and bonding part 5 is perpendicular to the laminated film 10 (polarizing film 10b). And it can move in the direction away from the polarizing film 10b. After movement, it can rotate. Furthermore, after that, the cutting and bonding part 5 can move in a direction perpendicular to the polarizing film 10b and close to the polarizing film 10b to return to the original position. Thereby, it is possible to avoid reliably that the corner | angular part of the cutting bonding part 5 contacts the polarizing film 10b, and it is very preferable.

In addition, the cutting bonding part 5 is a polygonal column shape, and as shown also in FIG. 6, although the cutting support surface 5a and the bonding surfaces 5b and 5c are provided in the three surfaces, a cutting support surface and / or a bonding are provided. A mating surface may be further provided. For example, the structure which is equipped with the cutting support surface on one surface and the bonding surface on three or four surfaces can be given, the cutting support surface is on two surfaces, and the bonding surface is on three or four surfaces. A configuration provided may also be mentioned. If the corner | angular part is chamfered like the cutting | lamination bonding part 5 of FIG. 5 , it is preferable from a viewpoint which can avoid a contact with a polarizing film. What is necessary is just to determine suitably the magnitude | size of the cutting bonding part 5 with the width | variety of the polarizing film 10b, and it is not specifically limited. For example, the length (length in the width direction of the polarizing film 10b) of 200 mm or more and 2000 mm or less can be set to a width of 10 mm or more and 300 mm or less (length in the conveyance direction of the polarizing film 10b).

FIG. 6 is a perspective view showing the cutting and bonding part 5. FIG. 6 shows a state in which the cutting and bonding part 5 of FIG. 5 is rotated by 1/3 turn clockwise. As shown in FIG. 6, cutting and bonding portion 5 has a cut supporting surface 5a, 2 or more adhered to the mating surface 5b · 5c. The cutting support surface 5a supports the polarizing film 10b along the width direction of the polarizing film 10b (laminated film 10). Also, bonded mating face 5b-5c are those comprising a suction mechanism 9 for adsorbing the connecting member for connecting the polarizing film 10b, 20b so as to cover the cut line of the cut polarizing film 10b (the laminated film 10, 20) is there.

  A groove-like opening 6 is formed in the cutting support surface 5a, and the blade portion of the cutting machine 7 provided in the cutting and bonding unit 5 shown in FIG. Since the opening 6 is formed, the cutting machine 7 can be reliably passed along the width direction of the polarizing film 10b, and the polarizing films 10b and 20b are connected (connection of the laminated films 10 and 20). It can be done more accurately.

  As the cutting machine 7, a known cutter can be adopted, and the polarizing film 10b can be easily cut. Moreover, the cutting machine 7 is supported by the base part 8 which can be driven in the width direction of the polarizing film 10b.

  The bonding surfaces 5b and 5c have the same configuration as each other, and include a plurality of suction mechanisms 9 as in the suction portions 4 and 4a. Moreover, the single-sided adhesive tape (connecting material) 5d is arrange | positioned at the bonding surfaces 5b and 5c, the non-adhesive surface of the single-sided adhesive tape 5d is hold | maintained by the adsorption | suction mechanism 9, and an adhesive surface is bonding surfaces 5b and 5c. It is arranged to be on the opposite side.

  The said single-sided adhesive tape 5d should just be able to bond polarizing films (laminate films), and can use a well-known single-sided adhesive tape. For example, film materials for tape include polyethylene terephthalate film (PET film), cellulose, Japanese paper, aluminum, non-woven fabric, polytetrafluoroethylene, polyvinyl chloride, polyvinylidene chloride, polycarbonate, polyurethane, ABS resin, polyester, polystyrene, Examples thereof include polyethylene, polypropylene, polyacetal resin, polylactic acid, polyimide, polyamide, and the like. Adhesives used for the adhesive layer include acrylic, epoxy, polyurethane, synthetic rubber, EVA, silicone, and chloride. Examples of the adhesive include vinyl, chloroprene rubber, cyanoacrylate, isocyanate, polyvinyl alcohol, and melamine resin.

  The film connection part 3 is arrange | positioned so that it may oppose with respect to the polarizing film 10b (The film connection part 13 is arrange | positioned so that it may oppose with respect to the protective film 10a). For this reason, in FIG. 1, since the polarizing film 10b is arrange | positioned perpendicularly | vertically, the film connection part 3 is also arrange | positioned perpendicularly | vertically with respect to the polarizing film 10b. On the other hand, when the polarizing film 10b is arrange | positioned, for example in the diagonal direction (or horizontal direction etc.), what is necessary is just to set it as the structure where the film connection part 3 is arrange | positioned also in the diagonal direction (or horizontal direction etc.).

  The film connecting portion 13 has the same structure as the film connecting portion 3. As shown in FIG. 1, the film connecting portions 3 and 13 are arranged so that the suction mechanisms 9 of the suction portions 4 (the suction portions 4 a) provided in the film connecting portions 3 and 13 face each other. Moreover, the film connection parts 3 and 13 are arranged with the passage positions of the laminated film 10 and the laminated film 20 interposed therebetween. In addition, the manufacturing system 100 provided with the film connection part 3 * 13 is a preferable form in this Embodiment, and can also be set as the form which is not provided with the film connection part 3 * 13. The film connecting portions 103 and 113 have the same configuration as the film connecting portions 3 and 13.

[Operation of optical display device manufacturing system]
Below, operation | movement of the manufacturing system 100 which concerns on this Embodiment is demonstrated. Note that the description related to the operation also serves as a description of a method of manufacturing the optical display device.

  First, as shown in FIG. 1, the laminated film 10 is unwound from the unwinding part 1 (unwinding process). Thereafter, as shown in FIG. 2, the polarizing film 10b and the adhesive layer are half-cut by the half cutter 21, and the protective film 10a is peeled by the knife edge 23 (peeling step). Further, the polarizing film 10b and the liquid crystal panel 2 are bonded together by the nip rollers 24 and 24a being pressed against the lower surface of the liquid crystal panel 2 via the adhesive layer (bonding step). The peeled protective film 10a is wound and collected by a winding unit (not shown).

Next, the liquid crystal panel 2 having the polarizing film 10b bonded to the lower surface is reversed by the reversing unit 26 and moved so that the short side of the liquid crystal panel 2 along the transport direction is perpendicular to the transport direction. (Reversal process). The surface where the polarizing film is not bonded becomes the lower surface of the liquid crystal panel 2 by the inversion process.

  An unwinding process, a peeling process, and a bonding process are performed again, and an optical display device in which the polarizing film 110b is bonded to the lower surface of the liquid crystal panel 2 and the polarizing films 10b and 110b are bonded to both surfaces of the liquid crystal panel 2 is obtained. It is done.

  As the laminated film 10 is unwound in the series of steps described above, the remaining amount of the roll of the laminated film 10 held by the unwinding unit 1 decreases. Below, the connection process which connects polarizing films is demonstrated. The same applies to the unwinding unit 101.

  In the connecting step, the laminated film 10 is cut and wound from the laminated film 10 left on the line side (separated from the original roll R1 of the unwinding portion 10) and the original roll R1a installed in the unwinding portion 1a. This is a step of connecting the laminated film 20 that has been taken out. Examples of the connecting step include (1) a technique by an operator and (2) a technique using the film connecting portions 3 and 13.

  First, the method (1) by the operator will be specifically described. When connecting the polarizing films (laminate films) by an operator, the conveyance speed of the laminate film 10 is set to 0 m / min. (After stopping the laminated film 10), the operator cuts the laminated film 10 (polarizing film 10b). Next, after unwinding the laminated film 20 from the unwinding part 1a and cutting the end part of the laminated film 20, for example, a method of connecting using the above-described single-sided adhesive tape 5d can be used.

  Thus, in the manufacturing system 100 according to the present invention, the two unwinding portions of the unwinding portions 1 and 1a are provided in parallel. Therefore, without replacing the original roll R1 with a new roll, the polarizing films R1a can be used to immediately connect the polarizing films (laminate films), and the laminated film 20 can be quickly unwound. it can.

  Furthermore, unlike the manufacturing system in which the conventional unwinding unit is installed only at one place, the original roll roll can be replaced at the unwinding unit that is vacant during operation. Can be reduced. As a result, it is possible to shorten the manufacturing time of the optical display device. In the manufacturing system 100, after the connection of the laminated films 10 and 20 is finished, the raw roll R1 of the unwinding unit 1 is replaced with a new roll while the laminated film 20 is unwound. When the remaining amount of the laminated film 20 is reduced, it is of course possible to connect the laminated film 20 and the laminated film 10 in the same manner.

  Next, the case where the film connecting portions 3 and 13 are used will be specifically described with reference to FIG. The same applies to the case where the film connecting portions 103 and 113 are used. FIG. 7 is a process diagram illustrating a connection process by the manufacturing system 100. The remaining amount of the raw fabric roll R1 decreases, and the conveying speed of the laminated film 10 (polarizing film 10b) is reduced to 0 m / min. Then, as shown in FIG. 7A, the adsorbing parts 4 and 4a and the cutting and bonding part 5 are moved in the vertical direction with respect to the polarizing film 10b (laminated film 10). Next, the polarizing film 10b is sucked and held by the suction mechanism 9 of the suction parts 4 and 4a (suction process).

  Under the present circumstances, in the cutting | disconnection bonding part 5, the cutting | disconnection support surface 5a is contacting the polarizing film 10b. Then, as shown in FIG.7 (b), the cutting machine which is not shown in figure is moved along the opening 6, and the laminated | multilayer film 10 is cut | disconnected (cutting process). After cutting, the cut bonding part 5 is moved in the direction perpendicular to the polarizing film 10b and away from the polarizing film 10b (left side in the figure). Then, it is rotated clockwise by 1/3 turn and moved in a direction perpendicular to the polarizing film 10b and close to the polarizing film 10b (right side in the figure). Thereby, as shown in FIG.7 (c), the single-sided adhesive of the bonding surface 5b is covered so that the cutting line of the polarizing film 10b facing the single-sided adhesive tape 5d (not shown) may be covered (beyond a cutting line). The tape 5d is bonded together (bonding process). The said cutting line shows the edge | side which opposes the bonding surface 5b among the cut surfaces produced in the polarizing film 10b by the cutting process. In the bonding step, the single-sided adhesive tape 5d is arranged so as to cover the cutting line, that is, the single-sided adhesive tape 5d is arranged in a portion where the polarizing film 10b does not exist beyond the cutting line of the polarizing film 10b. ing.

  Further, the single-sided adhesive tape 15d is adhered to the protective film 20a in the same manner as in FIGS. The same members as those described above are given the same names, and the description thereof is omitted.

  First, the laminated film 20 is unwound from the unwinding portion 1a, and a cutting machine (not shown) is moved along the opening formed in the cutting support surface 15a to cut the laminated film 20 as in FIG. To do. After cutting, the cut bonding part 15 is moved in a direction perpendicular to the protective film 20a and away from the protective film 20a (right side in the figure). Then, it is rotated counterclockwise by 1/3 round and moved in a direction perpendicular to the protective film 20a and close to the protective film 20a (left side in the figure). Thereby, as shown in FIG.7 (e), the single-sided adhesive tape 15d can be affixed so that the cutting line of the protective film 20a facing the single-sided adhesive tape 15d of the bonding surface 15b may be covered.

  Next, as shown to FIG.7 (f), adsorption | suction part 4 * 4a and the cutting | disconnection bonding part 5 (film connection apparatus 3) adjoin to adsorption | suction part 14 * 14a and the cutting | disconnection bonding part 15 (film connection part 13). The cut surfaces of the laminated film 10 and the laminated film 20 are matched (proximity process). Thereby, the part beyond the cutting line sticks to the polarizing film 20b and the protective film 10a among the single-sided adhesive tape 5d which covers the cutting line of the polarizing film 10b, and the single-sided adhesive tape 15d which covers the cutting line of the protective film 20a. . The laminated films 10 and 20 are connected. The part beyond the cutting line can be rephrased as a part not bonded to the polarizing film 10b / protective film 20a.

  In FIG. 7 (f), the film connecting portion 3 is brought close to the film connecting portion 13, but the film connecting portion 13 may be brought close to the film connecting portion 3, and the film connecting portions 3 and 13 are brought close to each other. May be.

  After connecting the laminated films 10 and 20, as a preparation step, as shown in FIG. 7 (g), the film connecting portions 3 and 13 are perpendicular to the polarizing film 10b and the protective film 20a, respectively. Move away. Thereafter, the cutting and bonding unit 5 is rotated counterclockwise by ３, and the cutting and bonding unit 15 is rotated clockwise by ３. Thereby, the cutting support surface 5a faces the polarizing film 10b side, and the cutting support surface 15a faces the protective film 20a side (position in FIG. 7 (h)). Thereby, a series of processes are completed. The bonding surfaces 5c and 15c are provided with a single-sided adhesive tape 5d and 15d adsorbed in advance. For this reason, after new raw fabric roll R1 is installed in the unwinding part 1, the same process of right and left reverse to FIG. Then, the same steps as those of FIGS. 7D to 7E are performed. And as above-mentioned, laminated film 20 * 10 can be connected through the process of FIG.7 (f)-(h). In addition, it is of course possible to continuously connect the laminated films (polarized films) by replenishing the used single-sided adhesive tapes 5d and 15d.

  As described above, in the case of the connecting step using the film connecting portions 3 and 13, the polarizing film is adsorbed, cut, and bonded in a shorter time and more accurately than the connecting step by the operator. Is preferable.

  Specifically, in the manufacturing system 100, in the case of the connecting step by the operator, about 10 minutes were required, but when the film connecting portions 3 and 13 were used, the time could be 1 minute or less.

  In addition, in the manufacturing system 100, when only the unwinding part 1 is used, the unwinding part 1a is not used, and the film connecting parts 3 and 13 are not used, the operator adds a new raw roll R1 to the unwinding part 1. It is necessary to connect the laminated film 10 after installing. In this case, the connecting process requires about 30 minutes. For this reason, it is clear that the manufacturing system 100 according to the present embodiment is useful.

[Modification of optical display device manufacturing system]
The manufacturing system 200 which is a modification of the film connection part which concerns on this invention is demonstrated. FIG. 8 is a side view showing the manufacturing system 200. As shown in the figure, the manufacturing system 200 differs from the manufacturing system 100 in that the film holding and cutting portions 33 and 133 are replaced with the film connecting portions 3 and 103, and the first connecting material is replaced with the film connecting portions 13 and 113. Bonding portions 36 and 136 are provided. In addition, in FIG. 8, illustration of the cutting machine of a film holding | maintenance cutting part is abbreviate | omitted. Moreover, the manufacturing system 200 is further provided with the 2nd connection material bonding part 36a * 136a.

  The film holding and cutting part 33 and the first connecting material bonding part 36 are a laminated film 10 (first polarizing film) unwound from the unwinding part 1 and a laminated film which is a polarizing film unwound from the unwinding part 1a. It arrange | positions through the conveyance position of 20 (2nd polarizing film). In other words, the film holding and cutting part 33 and the first connecting material bonding part 36 are arranged so that the laminated film 10 and the laminated film 20 are conveyed between the film holding and cutting part 33 and the first connecting material bonding part 36. Has been placed.

  In the same figure, the film holding | maintenance cutting part 33 is arrange | positioned so as to oppose the laminated | multilayer film 10, and the 1st connection material bonding part 36 is arrange | positioned so that the laminated | multilayer film 20 may be opposed. Moreover, the manufacturing system 200 is equipped so that the 2nd connection material bonding part 36a may be arrange | positioned in the unwinding direction of the laminated | multilayer film 10 from the film holding | maintenance cutting part 33, and the 2nd connection material bonding part 36a is laminated | stacked. It is arranged so as to face the film 10.

  FIG. 9 is a perspective view showing the film holding / cutting part 33. The film holding / cutting unit 33 includes a film holding unit 35 and a cutting machine 7, and the cutting machine 7 is supported by the base 8. The film holding unit 35 includes the suction mechanism 9 in the film holding unit 35 facing the laminated film 10, and the film holding unit 35 has a groove-shaped opening 6 formed therein. The suction mechanism 9 is the same as that provided in the film connecting portion 3. In the film holding and cutting part 33, unlike the film connecting part 3, an adsorption mechanism 9 that adsorbs or desorbs the laminated film 10 is provided on the surface on which the opening 6 is formed. However, the structure is not limited to this structure, and the film holding unit 35 may not include the suction mechanism 9 and may include the suction units 4 and 4a as in the film connection unit 3. In the film holding unit 35, the opening 6 is formed horizontally with respect to the width direction of the laminated film 10 (polarizing film 10 a), and the cutting machine 7 cuts the laminated films 10 and 20 along the opening 6.

  The suction mechanism 9 is formed in the film holding unit 35 with the opening 6 as a boundary. The laminated film 10 is divided into two parts by cutting the laminated film 10. The adsorption mechanism 9 can control adsorption or desorption for each adsorption mechanism divided into two with the opening 6 as a boundary. Among the cut laminated films 10, the laminated film 10 in the unwinding direction and the laminated film in the direction opposite to the unwinding direction 10 can be selectively adsorbed or desorbed. Thereby, for example, when the laminated film 10 is cut, only the laminated film 10 in the unwinding direction is detached and only the laminated film 10 in the unwinding direction is adsorbed to the film holding unit 35. . Thereafter, the laminated film 20 in the direction opposite to the unwinding direction is moved to the position where the laminated film 10 in the direction opposite to the unwinding direction is adsorbed. The film 10 and the laminated film 20 in the direction opposite to the unwinding direction can be in a state in which the cut surfaces face each other.

  FIG. 10 is a perspective view showing a film holding / cutting part 233 which is a modification of the film holding / cutting part 33. In the film holding part 235, the opening 6 is formed in the film holding part 235 in an oblique direction. Thereby, the cutting machine 7 cuts both the laminated film 10 and the laminated film 20 in an oblique direction with respect to the width direction of the laminated film 10. According to the said structure, when the laminated | multilayer film which cut | disconnected are connected, since the stress added to a connection part is reduced, it is preferable.

  FIGS. 11A and 11B are perspective views showing the first connecting material bonding portion 36. The first connecting material bonding part 36 includes adsorption parts 4 and 4 a and a connecting material holding part 37. The connecting material holding part 37 includes the suction mechanism 9 and holds the single-sided adhesive tape (connecting material) 35d by suction. On the other hand, the adsorbing portions 4 and 4 a include an adsorbing mechanism 9 that adsorbs or desorbs the laminated film 20.

  The adsorbing portions 4 and 4a can independently control adsorption or desorption, and among the cut laminated films 20, the laminated film 20 in the unwinding direction and the laminated film 20 in the direction opposite to the unwinding direction are selectively used. Can be adsorbed or desorbed. The laminated film 20 in the unwinding direction is adsorbed or desorbed by the adsorption unit 4, and the laminated film 20 in the direction opposite to the unwinding direction is adsorbed or desorbed by the adsorption unit 4a.

  The 1st connection material bonding part 36 is movable with respect to the laminated | multilayer film 20, and the adsorption | suction part 4 * 4a and the connection material holding part 37 are each movable independently. In FIG. 11 (a), the connecting material holding part 37 is arranged away from the laminated film 20 as compared with the adsorbing parts 4 and 4a, and the adsorbing parts 4 and 4a are arranged close to the laminated film 20. Has been.

  FIG. 11B shows a state in which the connecting material holding portion 37 is close to the laminated film 20, and the connecting material is held so that the suction portion 4, the single-sided adhesive tape 35 d and the suction portion 4 a are located in the same plane. A portion 37 is arranged. The single-sided adhesive tape 35 d can be bonded to the laminated film 20 by the connecting material holding part 37 moving in the direction of the laminated film 20. In addition, the connection material holding | maintenance part 37 has a substantially triangular prism shape, and is further provided with two surfaces which hold | maintain the single-sided adhesive tape 35d. A single-sided adhesive tape 35d can be held in advance on these two surfaces, and the single-sided adhesive tape 35d is again applied to the laminated film without replenishing the single-sided adhesive tape 35d by rotating the connecting material holding portion 37. The laminated films can be connected to each other (second connecting step described later).

  Moreover, the 2nd connection material bonding part 36a has the structure similar to the 1st connection material bonding part 36, and is equipped with the adsorption | suction part 4 * 4a and the connection material holding | maintenance part 37a. The laminated film 10 in the unwinding direction is adsorbed or desorbed by the adsorption unit 4, and the laminated film 10 in the direction opposite to the unwinding direction is adsorbed or desorbed by the adsorption unit 4a.

  The process of connecting the laminated films 10 and 20 by the film holding and cutting part 33, the first connecting material bonding part 36, and the second connecting material bonding part 36a of the manufacturing system 200 will be described with reference to FIG. The same applies to the case where the laminated films 110 and 120 are connected by the film holding and cutting part 133, the first connecting material bonding part 136, and the second connecting material bonding part 136a. FIG. 12 is a process diagram showing a connection process by the manufacturing system 100.

  First, the remaining amount of the raw roll R1 decreases, and the transport speed of the laminated film 10 (polarizing film 10b) is set to 0 m / min. Then, as shown in FIG. 12A, the film holding unit 35 is moved in the vertical direction with respect to the polarizing film 10 b (laminated film 10), and the polarizing film 10 b is adsorbed by the adsorbing mechanism 9. On the other hand, one end of the laminated film 20 is fixed to the film adsorption roll 16a, and the adsorption portions 4 and 4a are moved relative to the laminated film 20, and the protective film 10a is adsorbed by the adsorption mechanism 9 of the adsorption portions 4 and 4a. And hold (adsorption process). The film adsorption roll 16a is a roller that adsorbs and holds the laminated film, and is used to hold one end of the supplementary laminated film (polarizing film). In the figure, the supplementary laminated film is the laminated film 20, but when the laminated film 10 is connected to the laminated film 20, the film adsorbing roller is arranged so that one end of the laminated film 10 is held by the film adsorbing roller. Is placed.

  After the adsorption step, the adsorption portions 4 and 4a are moved toward the laminated film 10 so that the laminated film 10 and the laminated film 20 are adjacent to each other. In this state, the cutting machine 7 is moved along the opening to cut the laminated films 10 and 20.

  As shown in FIG. 12B, after cutting, the adsorption of the adsorption mechanism 9 of the film holding unit 35 that adsorbs the laminated film 10 (lower laminated film 10) opposite to the unwinding direction is released, and this lamination is performed. Only the film 10 is detached and separated from the film holding portion 35. On the other hand, the suction of the suction mechanism 9 of the suction portion 4 that sucks the laminated film 20 (upper laminated film 20) in the unwinding direction is released, and only this laminated film 20 is detached and separated from the suction portion 4.

  Further, as shown in FIG. 12C, the suction part 4 a that sucks the laminated film 20 (lower laminated film 20) in the direction opposite to the unwinding direction is moved in the direction of the film holding part 35. The laminated film 20 in the direction opposite to the unwinding direction is moved to the position where the laminated film 10 in the direction opposite to the unwinding direction has been arranged, and the laminated film 10 in the direction of unwinding and the laminated film in the direction opposite to the unwinding direction. 20 is in a state where the cut surfaces face each other. The laminated film 20 in the direction opposite to the unwinding direction is adsorbed by the adsorption mechanism 9 of the film holding unit 35, and the adsorption by the adsorption unit 4a is released.

  And as shown in FIG.12 (d), by moving the connection material holding | maintenance part 37 to the direction of the film holding part 35, the laminated | multilayer film 10 of the unwinding direction and the laminated | multilayer film 20 of the reverse direction to an unwinding direction are used. A single-sided adhesive tape 35d is pasted across the cutting line of both laminated films.

  After bonding, as shown in FIG. 12 (e), the film holding part 35 and the connecting material holding part 37 are moved in the opposite direction to the connected laminated film.

  And as shown in FIG.12 (f), the connected laminated | multilayer film are unwound from the unwinding part 1a, and are moved to a conveyance direction. At the position where the cutting line of the connected laminated film faces the connecting material holding part 37a, the conveyance is stopped, and the adhering part 4 of the second connecting material bonding part 36a adsorbs the laminated film 10 in the unwinding direction. The laminated film 20 in the direction opposite to the unwinding direction is adsorbed by the adsorbing part 4a of the second connecting material bonding part 36a.

  As shown in FIG. 12G, the second connecting material bonding portion 36 a is moved toward the opposite surface of the laminated film in which the single-sided adhesive tape 35 d is bonded by the connecting material holding portion 37. The connecting material holding part 37a moves toward the cutting line of the connected polarizing film, and the single-sided adhesive tape 35d held by the connecting material holding part 37a is pasted across the cutting line on the reverse surface of the laminated film. . Thereby, the single-sided adhesive tape 35d is bonded on both surfaces, and the laminated films 10 and 20 are connected in a state having sufficient strength.

  Finally, it leaves | separates from the laminated film in which the adsorption | suction part 4, the connection material holding | maintenance part 37a, and the adsorption | suction part 4a of the 2nd connection material bonding part 36a were connected, and conveyance of the connected laminated film is started.

[Operation of unwinding part of manufacturing system]
As described above, the production system according to the present invention includes two unwinding portions in each of the two bonding mechanisms, and further a laminated film (polarizing film) unwound from the two unwinding portions included in the same bonding mechanism. ) Connect each other.

  The process (manufacturing method of the optical display device) using the manufacturing system of the present invention includes (1) unwinding process, (2) connecting process, and (3) replacing process. As described above, the unwinding step is a step of unwinding the laminated film (polarizing film) from the unwinding portion, and the connecting step is between the laminated films (polarizing film) as described with reference to FIGS. Is a step of connecting the two. The connecting step may be a step in which the operator cuts the laminated film unwound from the first unwinding portion and the second unwinding portion, and bonds both the laminated films with a single-sided adhesive tape.

  In the replacement process, (1) the unwinding portions 1 and 101 are moved horizontally in the direction of one core of the original rolls R1 and R101, and (2) the original rolls R1 and R101 are replaced with new original rolls. (3) This is a step of moving the unwinding portions 1 and 101 horizontally in the direction of the other core of the new raw roll to return the unwinding portions 1 and 101 to their original positions. In the manufacturing system according to the present invention, the unwinding process, the connecting process, and the replacing process are performed using the unwinding units 1, 1 a, 101, and 101 a, whereby the replacement time of the original roll can be efficiently shortened.

  Below, operation | movement of each unwinding part and the order of connection of a laminated | multilayer film are demonstrated using FIG. FIG. 13 is a plan view showing the operation of the unwinding portions 1, 1 a, 101, 101 a of the manufacturing system 200, and FIG. 14 is a flowchart showing a manufacturing method using the manufacturing system 200.

  The manufacturing system 200 starts operation in a state where the raw fabric rolls are installed in the unwinding units 1, 1 a, 101, 101 a (START in FIG. 14). First, the laminated films 10 and 110 are unwound from the unwinding portions 1 and 101, respectively (S1: first unwinding step in FIG. 14). When the optical display device is manufactured and the remaining amount of the raw rolls R1 and R101 is exhausted, the laminated films 10 and 20 and the laminated films 110 and 120 are connected (S2 in FIG. 14: first connection). Process). Thereafter, the laminated films 20 and 120 are unwound from the unwinding portions 1a and 101a (S3 in FIG. 14: second unwinding step), and the manufacture of the optical display device is continued.

  During S3, in order to replace a new raw roll with the unwinding unit 1 · 101, a first replacement process is performed as S4 to S6. First, as shown in FIGS. 13A to 13B, the unwinding portions 1 and 101 are movable horizontally with respect to the direction of one core of the laminated films 10 and 110 (S4 in FIG. 14). Next, the raw rolls R1 and R101 (polarizing film) of the unwinding portions 1 and 101 are replaced with new raw rolls (polarizing film) (S5 in FIG. 14). After the replacement, the unwinding portions 1 and 101 are movable horizontally with respect to the other core direction of the new original fabric roll (polarizing film) (S6 in FIG. 14, FIGS. 13B to 13C). Thereby, the unwinding parts 1 and 101 are returned to the original positions.

  When the remaining amount of the raw rolls R1 and R101 unwound in S3 is exhausted, the laminated films 20 and 10 and the laminated films 120 and 110 are connected (S7 in FIG. 14: second connecting step). Thereafter, the laminated films 10 and 110 are unwound from the unwinding portions 1 and 101 (S8 in FIG. 14: third unwinding step), and the manufacture of the optical display device is continued.

  During S8, in order to replace a new raw roll with the unwinding portions 1a and 101a, a second replacement process is performed as S9 to S11. First, as shown in FIGS. 13C to 13D, the unwinding portions 1a and 101a can be moved horizontally with respect to one core direction of the laminated films 20 and 120 (S9 in FIG. 14). Next, the raw rolls R1a and R101a (polarizing film) of the unwinding portions 1a and 101a are replaced with new raw rolls (polarizing film) (S10 in FIG. 14). After the replacement, the unwinding portions 1a and 101a are moved horizontally with respect to the other core direction of the new original fabric roll (polarizing film) (S11 in FIG. 14, FIG. 13 (d) to (a)). Thereby, the unwinding part 1a * 101a is returned to the original position. Thus, although a series of operation | movement of the unwinding part was demonstrated, it is also possible to return to S1 from S11 and to continue manufacture of an optical display apparatus.

  In the method for manufacturing an optical display device according to the present invention, S3 and S4 to S6 are performed in parallel, and S8 and S9 to S11 are performed in parallel. Therefore, while unwinding the laminated film (polarizing film), the raw roll of the laminated film (polarizing film) can be exchanged, and the polarizing films can be quickly connected. Therefore, the time for stopping the manufacturing system can be suppressed, and the optical display device can be manufactured with a short tact time.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the technical means disclosed in different embodiments can be appropriately combined. Such embodiments are also included in the technical scope of the present invention. For example, the number of guide rollers in the manufacturing system and the arrangement of the unwinding unit, the winding unit, the film connecting unit, and the transport mechanism are not limited to the illustrated arrangement.

  According to the manufacturing system of the present invention, when the optical display device is manufactured, the polarizing films can be quickly connected, and the manufacturing time of the optical display device can be shortened. Therefore, the present invention can be used in the field of manufacturing an optical display device.

1.101 Unwinding part (first unwinding part)
1a / 101a Unwinding part (second unwinding part)
2 Liquid crystal panel 3, 13, 103, 113 Film connecting part 4, 4a, 14, 14a Adsorption part 5, 15 Cutting and bonding part 5a, 15a Cutting support surface 5b, 5c, 15b, 15c Bonding surface 5d, 35d Single-sided adhesive Tape (connecting material)
6 Opening 7 · 17 Cutting machine 9 Adsorption mechanism 10 · 110 Laminated film (first polarizing film)
10a / 110a Protective film 10b / 110b Polarizing film 12 Transport mechanism 16/106 Guide roller 20/120 Laminated film (second polarizing film)
21 ・ 121 Half cutter 22 ・ 122 Support base 23 ・ 123 Knife edge (peeling part)
24, 24a, 124, 124a Nip roller (bonding part)
25/125 Winding part 33/133 Film holding / cutting part 35/135 Film holding part 36/136 First connecting material bonding part 36a / 136a Second connecting material bonding part 100/200 Manufacturing system D1 Conveying direction D2 Core direction

Claims (10)

In a manufacturing system for manufacturing an optical display device,
A transport mechanism for transporting the liquid crystal panel, and two bonding mechanisms for bonding the polarizing film to the lower surface of the liquid crystal panel,
The bonding mechanism is
A first unwinding section for unwinding the polarizing film whose surface is protected by the protective film;
A second unwinding unit for unwinding a supplementary polarizing film connected to the polarizing film unwound from the first unwinding unit;
A peeling portion for peeling the protective film from the polarizing film;
A bonding part for bonding the polarizing film from which the protective film is peeled off to the lower surface of the liquid crystal panel;
A winding part for winding the protective film peeled off from the polarizing film,
The transport mechanism is provided with a reversing unit for reversing the liquid crystal panel on which the polarizing film is bonded to the lower surface by one bonding mechanism,
The first unwinding part and the second unwinding part are horizontally movable with respect to the core direction of the polarizing film, and the first unwinding part and the second unwinding part are below the transport mechanism. An optical display device manufacturing system, wherein the optical display device are arranged side by side. The said 1st unwinding part and 2nd unwinding part can move horizontally with respect to the core direction of a polarizing film so that the original fabric roll of a new polarizing film can be installed. The manufacturing system of the optical display device described. In a manufacturing system for manufacturing an optical display device,
A transport mechanism for transporting the liquid crystal panel, and two bonding mechanisms for bonding the polarizing film to the lower surface of the liquid crystal panel,
The bonding mechanism is
A first unwinding section for unwinding the polarizing film whose surface is protected by the protective film;
A second unwinding unit for unwinding a supplementary polarizing film connected to the polarizing film unwound from the first unwinding unit;
A peeling portion for peeling the protective film from the polarizing film;
A bonding part for bonding the polarizing film from which the protective film is peeled off to the lower surface of the liquid crystal panel;
A winding part for winding the protective film peeled off from the polarizing film,
The transport mechanism is provided with a reversing unit for reversing the liquid crystal panel on which the polarizing film is bonded to the lower surface by one bonding mechanism,
The first unwinding section and the second unwinding section are horizontally movable with respect to the core direction of the polarizing film so that a new roll of polarizing film can be installed. The unwinding unit and the second unwinding unit are arranged in parallel with each other, and the manufacturing system of the optical display device. The transport mechanism, the optical display device manufacturing system according to any one of claims 1 to 3, wherein the conveying direction of the liquid crystal panel is straight. The first polarizing film that is a polarizing film unwound from the first unwinding part and the second polarizing film that is a polarizing film unwound from the second unwinding part are the film holding and cutting part and the first connecting material bonding part. It is placed with the film transport position in between.
A second connecting material bonding portion is provided in the unwinding direction of the first polarizing film from the film holding and cutting portion, and the second connecting material bonding portion is disposed toward the first polarizing film,
The film holding and cutting unit includes a film holding unit and a cutting machine,
The film holding unit includes an adsorption mechanism that adsorbs or desorbs the first polarizing film,
The cutting machine cuts both the first polarizing film and the second polarizing film,
The first linking material bonding section includes a linking material holding section for holding a linking material bonded across the cutting line of the polarizing film, together with an adsorption section having an adsorption mechanism for adsorbing or desorbing the second polarizing film. Has
The second connecting material bonding portion includes an adsorption mechanism that adsorbs or desorbs the first polarizing film in the unwinding direction and the second polarizing film in the direction opposite to the unwinding direction, which is cut by the cutting machine. Along with the connecting material holding part that holds the connecting material to be pasted beyond the cutting line of the polarizing film,
Both the first polarizing film in the unwinding direction cut by the cutting machine and the second polarizing film in the direction opposite to the unwinding direction are opposed to each other by the first connecting material bonding portion in a state where the respective cut surfaces face each other. Pasting the connecting material beyond the cutting line of the polarizing film,
The connecting material is pasted across the cutting line of both polarizing films by the second connecting material pasting portion on the opposite side of the both polarizing films pasted with the first joining material pasting portion. The optical display device manufacturing system according to any one of claims 1 to 4 . The said cutting machine cut | disconnects both the 1st polarizing film and the 2nd polarizing film in the diagonal direction with respect to the width direction of a polarizing film, The manufacturing system of the optical display apparatus of Claim 5 characterized by the above-mentioned. In a manufacturing system for manufacturing an optical display device,
A transport mechanism for transporting the liquid crystal panel, and two bonding mechanisms for bonding the polarizing film to the lower surface of the liquid crystal panel,
The bonding mechanism is
A first unwinding section for unwinding the polarizing film whose surface is protected by the protective film;
A second unwinding unit for unwinding a supplementary polarizing film connected to the polarizing film unwound from the first unwinding unit;
A peeling portion for peeling the protective film from the polarizing film;
A bonding part for bonding the polarizing film from which the protective film is peeled off to the lower surface of the liquid crystal panel;
A winding part for winding the protective film peeled off from the polarizing film,
The transport mechanism is provided with a reversing unit for reversing the liquid crystal panel on which the polarizing film is bonded to the lower surface by one bonding mechanism,
The first unwinding part and the second unwinding part can move horizontally with respect to the core direction of the polarizing film, and the first unwinding part and the second unwinding part are arranged in parallel with each other. ,
The first polarizing film that is a polarizing film unwound from the first unwinding part and the second polarizing film that is a polarizing film unwound from the second unwinding part are the film holding and cutting part and the first connecting material bonding part. It is placed with the film transport position in between.
A second connecting material bonding portion is provided in the unwinding direction of the first polarizing film from the film holding and cutting portion, and the second connecting material bonding portion is disposed toward the first polarizing film,
The film holding and cutting unit includes a film holding unit and a cutting machine,
The film holding unit includes an adsorption mechanism that adsorbs or desorbs the first polarizing film,
The cutting machine cuts both the first polarizing film and the second polarizing film,
The first linking material bonding section includes a linking material holding section for holding a linking material bonded across the cutting line of the polarizing film, together with an adsorption section having an adsorption mechanism for adsorbing or desorbing the second polarizing film. Has
The second connecting material bonding portion includes an adsorption mechanism that adsorbs or desorbs the first polarizing film in the unwinding direction and the second polarizing film in the direction opposite to the unwinding direction, which is cut by the cutting machine. Along with the connecting material holding part that holds the connecting material to be pasted beyond the cutting line of the polarizing film,
Both the first polarizing film in the unwinding direction cut by the cutting machine and the second polarizing film in the direction opposite to the unwinding direction are opposed to each other by the first connecting material bonding portion in a state where the respective cut surfaces face each other. Pasting the connecting material beyond the cutting line of the polarizing film,
The connecting material is pasted across the cutting line of both polarizing films by the second connecting material pasting portion on the opposite side of the both polarizing films pasted with the first joining material pasting portion. An optical display device manufacturing system. The system for manufacturing an optical display device according to claim 7 , wherein the transport mechanism has a linear transport direction of the liquid crystal panel. 9. The system for manufacturing an optical display device according to claim 7 , wherein the cutting machine cuts both the first polarizing film and the second polarizing film in an oblique direction with respect to the width direction of the polarizing film. An optical display device manufacturing method using the optical display device manufacturing system according to any one of claims 1 to 9 ,
A first unwinding step of unwinding the polarizing film from the first unwinding section;
A first connecting step of connecting the polarizing film unwound from the first unwinding part and the polarizing film unwound from the second unwinding part;
A second unwinding step of unwinding the polarizing film from the second unwinding portion;
During the second winding out process, is moved horizontally Volume 1 out portion to one of the winding core direction of the polarizing film, replacing the polarizing film of the first winding out part to a new polarizing film, the a first exchange step of moving horizontally relative to the other core the direction of the polarizing film, Volume output unit,
A second connecting step of connecting the polarizing film unwound from the second unwinding part and the polarizing film unwound from the first unwinding part;
A third unwinding step of unwinding the polarizing film from the first unwinding section;
During the third volume out process, is moved horizontally Volume 2 out section to one of the winding core direction of the polarizing film, replacing the polarizing film of the second winding out unit to the new polarizing film, the method for manufacturing an optical display device characterized by comprising a second exchange step of moving horizontally Volume 2 out portion with respect to the other winding core direction of the polarizing film.

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