KR101093298B1 - Apparatus for sticking polarizing film and liquid crystal display apparatus manufacturing system including the same - Google Patents

Abstract

The bonding apparatus 60 of this invention is the nip roll which bonds a polarizing film to the lower surface of the board | substrate 5 by the 1st board | substrate carrying mechanism 61 which conveys the rectangular board | substrate 5, and the 1st board | substrate carrying mechanism 61. And a nip roll for bonding the polarizing film to the lower surface of the substrate 5 in the second substrate transport mechanism 62 and the second substrate transport mechanism 62 for transporting the inversion mechanism 65 and the substrate 5, The first substrate transfer mechanism 61 and the second substrate transfer mechanism 62 are arranged in the same direction, and the inversion mechanism 65 includes an adsorption portion 66 for absorbing the substrate 5 and the substrate 5. A substrate inverting portion for inverting the substrate 5 by a first rotation for rotating the substrate 5 to a first angle with a long side or a short side of the substrate and a second rotation for inverting the substrate 5 from the first angle. 67) and a substrate rotating portion 68 for rotating the substrate 5 rotated by the first rotation in a direction parallel to the surface of the substrate 5 in the first substrate transport mechanism. All.

Description

Bonding apparatus of polarizing film and manufacturing system of liquid crystal display device having the same {APPARATUS FOR STICKING POLARIZING FILM AND LIQUID CRYSTAL DISPLAY APPARATUS MANUFACTURING SYSTEM INCLUDING THE SAME}

The present invention relates to a bonding apparatus for a polarizing film and a manufacturing system for a liquid crystal display device having the same.

Background Art Conventionally, liquid crystal displays have been widely manufactured. A polarizing film is usually bonded to the substrate (liquid crystal panel) used in the liquid crystal display device in order to control the transmission or blocking of light. The polarizing film is bonded so that the absorption axis may orthogonally cross.

As a method of bonding a polarizing film to a board | substrate, what is called a "chip to panel" system which cuts a polarizing film into the size according to a board | substrate, and joins is mentioned. However, in this system, since a polarizing film is bonded one by one with respect to a board | substrate, there exists a fault that production efficiency is low. On the other hand, a so-called 'roll to panel' method in which a polarizing film is fed to a conveyor roll and continuously bonded to a substrate may be mentioned. According to this method, joining can be performed with high production efficiency.

As an example of a roll-to-panel system, Patent Document 1 discloses a manufacturing system of an optical display device. The said manufacturing system is what joins an optical film (polarizing film) to the upper surface of a board | substrate, then rotates a board | substrate, and bonds a polarizing film from a lower surface.

[Patent Document 1] Japanese Unexamined Patent Publication "Patent No. 4407501 (issued on August 5, 2009)"

However, the above conventional apparatus has the following problems.

First, when bonding a polarizing film to a board | substrate, in order to avoid that a foreign material, such as dust, mixes in a bonding surface, it is common that work is performed in a clean room. In the clean room, air is rectified. It is because joining of a polarizing film in the state rectified by the downflow with respect to a board | substrate is necessary in order to suppress the yield fall by a foreign material.

In this regard, the manufacturing system of Patent Literature 1 is configured to bond a polarizing film to the substrate from the upper and lower surfaces thereof. However, when bonding is performed from the upper surface of the polarizing film, there is a disadvantage in that airflow (downflow) is disturbed by the polarizing film and the rectifying environment to the substrate is deteriorated. As an example in the case of bonding from the upper surface of a polarizing film, the velocity vector of the airflow in the upper bonding type | mold manufacturing system is shown to FIG. 14A and FIG. 14B. The area A in FIG. 14 is an area where unwinding portions and the like are wound around the polarizing film, and the area B is mainly a region through which the polarizing film passes, and a region C winding the peeling film removed from the polarizing film. It is an area where mounting and the like are installed.

In addition, clean air is supplied from the HEPA (High Efficiency Particulate Air) filter 40. In addition, in FIG. 14A, since the grating 41 through which clean air can pass is provided, it is possible to move the airflow in the vertical direction through the grating 41. On the other hand, in FIG. 14B, since the grating 41 is not provided, the airflow moves along the bottom after contacting the bottom of the bottom of FIG. 14B.

In FIGS. 14A and 14B, regions A to C are disposed in the 2F (two layers) portion, and clean air from the HEPA filter 40 is disturbed by the polarizing film. Therefore, airflow directed in the vertical direction with respect to the substrate passing through the 2F portion is unlikely to occur. On the other hand, the airflow vector in the horizontal direction is in a large state (density of vector is high). In other words, it can be said that the rectified environment is deteriorated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above conventional problems, and an object thereof is to provide a bonding apparatus for a polarizing film which does not disturb the rectifying environment and a manufacturing system for a liquid crystal display device having the same.

In order to solve the said subject, the bonding apparatus of the polarizing film of this invention is a 1st board | substrate conveyance mechanism which conveys a rectangular board | substrate in the state in which the long side or the short side was along the conveyance direction, and in the said 1st board | substrate conveyance mechanism, A first bonding portion for bonding a polarizing film to a lower surface of the substrate, an inversion mechanism for inverting the substrate conveyed by the first substrate transport mechanism and placing the substrate on a second substrate transport mechanism; As a polarizing film bonding apparatus comprising a second substrate transport mechanism for conveying in a state where the short side or long side is along the conveying direction, and a second bonding portion for bonding the polarizing film to the lower surface of the substrate in the second substrate transport mechanism. And the first substrate transfer mechanism and the second substrate transfer mechanism are arranged in the same direction, and the inversion mechanism includes an adsorption portion for adsorbing the substrate, and a long side or a short side of the substrate as the lower side. A substrate inverting portion for inverting the substrate by a first rotation for rotating the substrate to a first angle and a second rotation for inverting the substrate from the first angle, and connected to the substrate inverting portion and rotating by the first rotation And a substrate rotating portion for rotating the prepared substrate 90 degrees in a direction parallel to the surface of the substrate in the first substrate transfer mechanism.

According to the above invention, the polarizing film is bonded to the lower surface of the substrate by the first bonding portion, and the substrate adsorption portion is absorbed by (1) the adsorption portion by the substrate inversion portion in the inversion mechanism, and (2) by the substrate inversion portion. By the first rotation of the substrate, (3) the 90 ° rotation of the substrate by the substrate rotating portion, and (4) the second rotation of the substrate by the substrate inverting portion, the substrate is inverted and the long side and the short side in the conveying direction are changed. You can change it. Thereafter, the polarizing film can be bonded to the lower surface of the substrate by the second bonding portion. That is, since a polarizing film can be bonded to both surfaces of a board | substrate from a lower surface, it does not disturb a rectifying environment. In addition, since the operation of the inversion mechanism is simply four operations, the tact time is short. Thus, a short tact time junction can also be realized. Moreover, the said 1st board | substrate carrying mechanism and the 2nd board | substrate carrying mechanism are arrange | positioned toward the same direction. That is, the 'L' shape or the like does not have a complicated structure. Therefore, the bonding apparatus which concerns on this invention is very easy to install, and is excellent in area efficiency.

As for the bonding apparatus of the polarizing film of this invention, the said 1st board | substrate carrying mechanism and the 2nd board | substrate carrying mechanism are arrange | positioned toward the same direction, The said inversion mechanism is the adsorption | suction part which adsorb | sucks the said board | substrate, A substrate inverting portion for inverting the substrate by a first rotation for rotating the substrate to a first angle and a second rotation for inverting the substrate from the first angle with the long side or short side as the lower side; And a substrate rotating portion for rotating the substrate rotated by the first rotation in a direction parallel to the surface of the substrate in the first substrate transfer mechanism.

Therefore, the inverting mechanism can be used to invert the substrate and to change the long side and the short side in the conveying direction. Thereby, since a polarizing film can be bonded to both surfaces of a board | substrate from a lower surface, it does not disturb a rectifying environment. In addition, since the operation of the inversion mechanism is simply four operations, the tact time is short. Thus, a short tact time junction can also be realized. Moreover, the said 1st board | substrate carrying mechanism and the 2nd board | substrate carrying mechanism are arrange | positioned toward the same direction. That is, the 'L' shape or the like does not have a complicated structure. Therefore, the joining apparatus which concerns on this invention exhibits the effect that installation is very easy and is excellent in area efficiency.

Other objects, features and advantages of the present invention will be fully understood from the description below. Further advantages of the present invention will become apparent from the following description with reference to the accompanying drawings.

1 is a cross-sectional view showing an embodiment of a manufacturing system according to the present invention.
It is sectional drawing which shows the modification of the unwinding part in this invention.
3 is a cross-sectional view illustrating a peripheral portion of a nip roll in the manufacturing system of FIG. 1.
Fig. 4 is a cross-sectional view showing the velocity vector of the airflow in the bottom junction type manufacturing system similar to the present invention.
It is sectional drawing which shows the modification of the bonding apparatus which concerns on this invention.
6 is a perspective view illustrating a film connecting part and a cutting machine according to the present invention.
7 is a perspective view showing a cut joint according to the present invention.
8 is a process chart showing a connection process by the manufacturing system according to the present invention.
9 is a perspective view showing a process of inverting a substrate by the inversion mechanism in the present invention.
10 is a plan view illustrating a process of inverting a substrate by the inversion mechanism of FIG. 9.
It is a top view which shows the modification of the bonding apparatus which concerns on this invention.
Fig. 12 is a block diagram showing the relationship between each member included in the manufacturing system of the liquid crystal display device according to the present invention.
Fig. 13 is a flowchart showing the operation of the manufacturing system of the liquid crystal display device according to the present invention.
It is sectional drawing which shows the velocity vector of airflow in the upper junction type manufacturing system.

Embodiment 1

EMBODIMENT OF THE INVENTION Although one Embodiment of this invention is described based on FIGS. 1-11, it is as follows, but this invention is not limited to this. First, the structure of the manufacturing system (manufacturing system of the liquid crystal display device) concerning this invention is demonstrated below. The manufacturing system includes the bonding apparatus according to the present invention.

1 is a cross-sectional view showing a manufacturing system. As shown in FIG. 1, the manufacturing system 100 has a two-stage structure, the 1F (1st layer) part is the film conveyance mechanism 50, and the 2F (2nd layer) part is the bonding apparatus containing a board | substrate conveyance mechanism. (60).

<Film transport mechanism>

First, the film conveyance mechanism 50 is demonstrated. The film conveyance mechanism 50 winds up a polarizing film (polarizing plate), conveys to nip rolls 6 * 6a and 16 * 16a, and plays a role which winds up the peeling film which became unnecessary. On the other hand, the bonding apparatus 60 serves to bond the polarizing film wound by the film conveyance mechanism 50 with respect to the board | substrate (liquid crystal panel) 5.

The film transport mechanism 50 includes a first film transport mechanism 51 and a second film transport mechanism 52. The 1st film conveyance mechanism 51 conveys a polarizing film to the nip roll 6 * 6a which bonds a polarizing film to the lower surface of the board | substrate 5 for the first time. In addition, the board | substrate 5 has a rectangular shape. On the other hand, the 2nd film conveyance mechanism 52 conveys a polarizing film to the lower surface of the inverted board | substrate 5.

On the other hand, the 2nd film conveyance mechanism 52 conveys a polarizing film to the lower surface of the inverted board | substrate 5.

The first film conveying mechanism 51 has a first unwinding part 1, a second unwinding part 1a, a first unwinding part 2, a second unwinding part 2a, a half cutter 3, a knife edge ( 4) and a defect film winding roller (7 · 7a). The disk of a polarizing film is provided in the 1st unwinding part 1, and a polarizing film is wound up. As the polarizing film, a known polarizing film may be used. Specifically, the polyvinyl alcohol film is dyed with iodine or the like, and a film drawn in the uniaxial direction can be used. Although it does not specifically limit as thickness of the said polarizing film, The polarizing film of 5 micrometers or more and 400 micrometers or less can be used preferably.

In the disk of the polarizing film, the direction of the absorption axis is located in the flow direction (MD direction). In the polarizing film, an adhesive layer is protected by a release film. As the release film (also referred to as protective film or separator), a polyester film, a polyethylene terephthalate film, or the like can be used. Although it does not specifically limit as thickness of the said peeling film, The peeling film of 5 micrometers or more and 100 micrometers or less can be used preferably.

Since the manufacturing system 100 includes two unwinding portions and two unwinding portions corresponding to the unwinding portions, when the remaining amount of the original disk of the first unwinding portion 1 becomes small, the second unwinding portion 1a is provided. It is possible to connect the provided disk to the disk of the 1st unwinding part 1. As a result, the work can be continued without stopping the winding of the polarizing film. By this structure, production efficiency can be improved. In addition, what is necessary is just to provide a plurality of the said unwinding part and the winding-up part, respectively, and of course three or more may be provided.

The 1st unwinding part 1 and the 2nd unwinding part 1a shown in FIG. 1 have a structure which can mutually change a position by a turret. When the position changes, the first unwinding part 1 and the second unwinding part 1a move while drawing a circle orbit, and automatically cut the polarizing film of the first unwinding part 1, and then the second unwinding part. The polarizing film of the exit part 1a can be connected automatically. The same applies to the first unwinding part 11 and the second unwinding part 11a. Moreover, the 1st winding part 2, the 2nd winding part 2a, the 1st winding part 12, and the 2nd winding part 12a also have a structure which rotates by a turret. According to the said structure by a turret, it is excellent in the point which can unwound easily the winding parts or the winding parts, and can connect films easily.

Moreover, the structure shown in FIG. 2 is mentioned as a modification of a winding part. The 1st unwinding part 1b and the 2nd unwinding part 1c of FIG. 2 are a structure which can move horizontally with respect to the direction of the winding core 1d of a polarizing film. In other words, the 1st unwinding part 1b and the 2nd unwinding part 1c have the structure which can move along the width direction of a polarizing film. Specifically, as shown in the right part of FIG. 2, it has a structure which can move to at least one of the bidirectional directions according to the core 1d (inward direction of the drawing (mark of x in the middle of ○) and forward direction of the drawing (in the middle of ○). ● mark) can be moved to at least one).

According to this structure, when replacing the roll of a polarizing film, a roll of a new polarizing film can be provided with respect to the 1st unwinding part 1b or the 2nd unwinding part 1c which moved horizontally in the direction of the winding core 1d. have. Therefore, unlike the structure which has a turret, the 1st unwinding part 1b and the 2nd unwinding part 1c do not move upwards.

As shown in FIG. 2, although the bonding apparatus 60 is provided in the upper part of the 1st unwinding part 1b and the 2nd unwinding part 1c, according to this structure, the 1st unwinding part 1b and the 2nd winding Since the outlet part 1c is a structure which moves horizontally in the direction of the winding core 1d, it is not necessary to ensure the space which these unwinding parts move upwards. Therefore, the space between the conveyor roll 15 and the unwinding part provided in the upper part can be saved. As a result, it is possible to provide a miniaturized bonding apparatus, and further a manufacturing system. The present invention is greatly different from the conventional manufacturing system having a turret in that such miniaturization can be achieved. A manufacturing system having a turret is disclosed, for example, in Japanese Patent Laid-Open No. 8-208083.

In addition, when the roll remaining amount of the polarizing film with which the 1st unwinding part 1b was equipped becomes small, it connects with the polarizing film of the 2nd unwinding part 1c by an operator. In this case, the conveyance speed of the polarizing film is 0 m / min. After setting it as the operator, the operator cuts the polarizing film on the first unwinding part 1b side. Next, after winding a polarizing film from the 2nd unwinding part 1c and cut | disconnecting an edge part, the polarizing films are connected, for example using one side adhesive tape.

Moreover, also about the 1st winding-up part 2, the 2nd winding-up part 2a, the 1st winding-up part 12, and the 2nd winding-up part 12a of FIG. 1, similar to the unwinding part of FIG. 2, The structure can be moved horizontally with respect to the direction of the winding core. By setting it as the said structure also in the winding part, the space of the conveyor roll 15 and a winding part can be saved, and it is possible to provide a more compact joining apparatus, and also a manufacturing system.

The half cutter (cutting part) 3 cuts the polarizing film (film laminated body consisting of a polarizing film, an adhesive layer, and a peeling film) protected by the peeling film, and cut | disconnects a polarizing film and an adhesive layer. As the half cutter 3, a well-known member may be used. Specifically, a blade, a laser cutter, etc. are mentioned. After the polarizing film and the pressure-sensitive adhesive layer are cut by the half cutter 3, the release film is removed from the polarizing film by the knife edge (removing part) 4.

The pressure-sensitive adhesive layer is applied between the polarizing film and the release film, and after the release film is removed, the pressure-sensitive adhesive layer remains on the polarizing film side. It does not specifically limit as said adhesive layer, Adhesive layers, such as an acryl type, an epoch clock, a polyurethane type, are mentioned. Although the thickness in particular of an adhesive layer is not restrict | limited, Usually, it is 5-40 micrometers.

In addition, the 2nd film conveyance mechanism 52 is the same structure as the 1st film conveyance mechanism 51, and the 1st unwinding part 11, the 2nd unwinding part 11a, the 1st winding-up part 12, and the 2nd The winding-up part 12a, the half cutter 13, the knife edge 14, and the faulty film winding roller 17 * 17a are provided. The same operation | movement as the member in the 1st film conveyance mechanism 51 is exhibited about the member which gave the same member name.

As a preferable embodiment, the manufacturing system 100 includes a cleaning unit 71. The cleaning part 71 cleans the board | substrate 5 before bonding a polarizing film to the lower surface of the board | substrate 5 with the nip roll 6 * 6a. As the washing | cleaning part 71, the well-known washing | cleaning part comprised with the nozzle, a brush, etc. which spray a washing | cleaning liquid may be used. By washing | cleaning the board | substrate 5 just before joining with the washing | cleaning part 71, joining can be performed in the state in which the foreign material of the board | substrate 5 is few.

Next, the knife edge 4 is demonstrated using FIG. 3 is a cross-sectional view showing a peripheral portion of the nip roll 6 · 6a in the manufacturing system 100. FIG. 3 shows a situation in which the substrate 5 is conveyed from the left direction, and the polarizing film 10a having the pressure-sensitive adhesive layer (not shown in the following) is conveyed from the lower left direction. The polarizing film 10 is provided with the peeling film 10b, the polarizing film 10a and the adhesive layer are cut | disconnected by the half cutter 3, and the peeling film 10b is not cut | disconnected (half cut).

The knife edge 4 is provided in the peeling film 10b side. The knife edge 4 is an edge-shaped member for peeling off the peeling film 10b, and the polarizing film 10a and the peeling film 10b having low adhesive strength are peeled off on the knife edge 4.

Thereafter, the release film 10b is wound around the first winding part 2 of FIG. 1. In addition, it is also possible to use the structure which winds up a peeling film using an adhesive roller instead of the knife edge. In that case, the winding efficiency of a peeling film can be improved by providing an adhesive roller in two places similarly to a winding-up part.

Next, the bonding apparatus 60 is demonstrated. The bonding apparatus 60 conveys the board | substrate 5, and bonds the polarizing film conveyed by the film conveyance mechanism 50 to a board | substrate. Although not shown, clean air is supplied to the bonding apparatus 60 with respect to the upper surface of the board | substrate 5. That is, rectification of the downflow is performed. Thereby, the conveyance and the bonding of the board | substrate 5 can be performed in a stable state.

<Bonding device>

The bonding apparatus 60 is provided in the upper part of the film conveyance mechanism 50. As shown in FIG. Thereby, space saving of the manufacturing system 100 can be aimed at. Although not shown, the bonding apparatus 60 is provided with the board | substrate conveying mechanism provided with a conveyor roll, and the board | substrate 5 is conveyed in a conveyance direction by this (the 1st board | substrate conveying apparatus 61 mentioned later in FIG. 10). The second substrate transfer device 62 corresponds to the substrate transfer mechanism).

In the manufacturing system 100, the board | substrate 5 is conveyed from the left side, and is conveyed to the upper part of the 2nd film conveyance mechanism 52 from the right side of a figure, ie, the upper part of the 1st film conveyance mechanism 51 in the figure. Between the film conveyance mechanism 50 and the bonding apparatus 60, the nip roll 6 * 6a (1st bonding part) and the nip roll 16 * 16a (2nd bonding part) which are joining parts are provided, respectively. The nip rolls 6 · 6a and 16 · 16a are members that serve to bond the polarizing film 10a from which the release film 10b has been removed to the lower surface of the substrate 5. In addition, since the polarizing film 10a is bonded to both surfaces of the board | substrate 5 from the lower surface, after the polarizing film 10a is bonded to one surface by the nip roll 6 * 6a, the board | substrate 5 is an inversion mechanism. Inverted by (65). The inversion mechanism 65 is mentioned later.

The polarizing film 10a conveyed by the nip roll 6 * 6a is bonded by the lower surface of the board | substrate 5 via an adhesive layer. As nip roll 6 * 6a, well-known structures, such as a press roll and a press roll, can be employ | adopted, respectively. Moreover, what is necessary is just to adjust the pressure and temperature at the time of joining in the nip roll 6 * 6a suitably. The structure of the nip roll 16 * 16a is also the same. In addition, although not shown, in the manufacturing system 100, as a preferable structure, the fault display (mark) detection part is provided between the 1st unwinding part 1 to the half cutter, and the polarizing film which has a fault is detected. It is made up.

In addition, the above-mentioned defect display is provided at the time of disc production of the polarizing film to give a defect display, or the defect display unit provided on the side of the 1st unwinding part 11 or the 2nd unwinding part 11a rather than a fault display detection part. It is attached to the polarizing film by whether or not. The defect display provision unit is constituted by a camera, an image processing apparatus, and a defect display forming unit. First, the imaging of the polarizing film is performed by the camera, and by processing the photographing information, it is possible to inspect the presence or absence of a defect. As said fault, a foreign material, such as dust, a fish eye, etc. are mentioned specifically ,. When a fault is detected, a fault mark is formed in a polarizing film by a fault mark formation part. As defect display, marks such as ink are used.

In addition, the bonding avoiding part which does not show in figure shows the said mark with a camera, and transmits a stop signal to the bonding apparatus 60, and stops conveyance of the board | substrate 5. FIG. Thereafter, the polarizing film in which the defect is detected is not bonded by the nip roll 6 · 6a, but is wound by the defect film winding roller (recovery portion) 7 · 7a. Thereby, joining with the board | substrate 5 and the polarizing film which has a fault can be avoided. If the said series of structures is provided, since the bonding of the polarizing film which has a fault and the board | substrate 5 can be avoided, a yield can be improved and it is preferable. As a fault detection part and a junction avoiding part, a well-known inspection sensor can be used suitably.

As shown in FIG. 1, after the board | substrate 5 turns into an inverted state by the inversion mechanism 65, the board | substrate 5 is conveyed by the nip roll 16 * 16a. The polarizing film is bonded to the lower surface of the substrate 5. As a result, a polarizing film is bonded to both surfaces of the board | substrate 5, and two polarizing films are bonded to both surfaces of the board | substrate 5 with the absorption axis different from each other. Thereafter, as necessary, inspection is performed on both surfaces of the substrate 5 as to whether the bonding misalignment has occurred. The inspection can usually adopt a configuration made by an inspection unit having a camera or the like.

Thus, in the manufacturing system 100, when bonding a polarizing film to the board | substrate 5, it is set as the structure which bonds from the lower surface of the board | substrate 5, and does not disturb the rectifying environment to the board | substrate 5. For this reason, foreign material mixing to the joining surface of the board | substrate 5 can also be prevented, and a more accurate joining becomes possible.

4 (a) and 4 (b) show the velocity vectors of the airflow in the bottom junction type manufacturing system similar to the present invention. In FIG.4 (a), (b), area | region A is an area | region in which a unwinding part is provided, area | region B is a area | region through which a polarizing film passes mainly, and area | region C is a area | region in which a winding part etc. are provided. In addition, clean air is supplied from the HEPA filter 40. In addition, since the grating 41 which can pass clean air is provided in FIG.4 (a), it is possible for the air flow to move to a vertical direction through the grating 41. FIG. On the other hand, in FIG. 4B, since the grating 41 is not provided, the airflow moves along the bottom after contacting the bottom.

Since the manufacturing system shown to Fig.4 (a) (b) is a bottom bonding type, as shown to Fig.14 (a) (b), the airflow from the HEPA filter 40 is interrupted by a polarizing film. It doesn't work. For this reason, the direction of the airflow vector is mostly toward the substrate, and it can be said that a desirable rectification environment is realized in a clean room. Although the grating 41 is provided in FIG. 4A and not in FIG. 4B, the same preferable state is shown in both figures. In addition, although the board | substrate conveyance mechanism is formed horizontally in FIG.4 and FIG.14, it is not provided as a series structure. For this reason, the airflow can pass between the substrate transport mechanisms. After the board | substrate is hold | maintained by the inversion mechanism mentioned later, it is the structure which can transfer between board | substrate carrying mechanisms.

Moreover, in the manufacturing system 100, the board | substrate 5 is first conveyed by the long side width (long side orthogonal to a conveyance direction), and after that, it is the structure which conveys by the short side width (short side orthogonal to a conveyance direction). It is.

[Configuration of film connection part]

Moreover, the new modification of the bonding apparatus which concerns on this invention is demonstrated. 5 is a cross-sectional view showing a modification of the bonding apparatus 60 according to the present invention. The first unwinding portion 1b and the second unwinding portion 1c of the first film transport mechanism 51 according to FIG. 5 are movable along the horizontal direction with respect to the direction of the winding core 1d of the polarizing film, similarly to FIG. 2. It is structured.

The first film conveying mechanism 51 is provided with a film connecting portion (first film connecting portion) 83 and a film connecting portion (second film connecting portion) 93, whereby the connection of the polarizing film 10 占I can do it.

6 is a perspective view illustrating the film connection part 83 and the cutter 87. As shown in FIG. 6, the film connection part 83 is equipped with the adsorption | suction part 84 * 84a and the cut-and-joint part 85. As shown in FIG.

The adsorption | suction part 84 * 84a is a member for adsorption | suction and fixing a polarizing film. The adsorption part 84 * 84a has a flat plate shape, and is provided with the some adsorption mechanism 89 on the surface. The adsorption mechanism 89 is not specifically limited as long as it can adsorb a polarizing film, and the structure which adsorbs air by a pump and adsorb | sucks a polarizing film can be employ | adopted.

The cut joint 85 is rotatable and has a plurality of surfaces. Specifically, the cut joint 85 has a polygonal shape. Moreover, it is arrange | positioned rotatably. Moreover, as a preferable aspect, it can move to the perpendicular direction with respect to the polarizing film 10. FIG. By being movable in the vertical direction with respect to the polarizing film 10, when the cut joint 85 is rotated, the cut joint 85 is perpendicular to the polarizing film 10 and moves away from the polarizing film 10. Can then be rotated. Thereafter, the cut joint 85 may be perpendicular to the polarizing film 10, and may move to a direction close to the polarizing film 10 to return to its original position. This ensures that each part (the part including the narrow surface adjacent between the bonding surface 85b and the bonding surface 85c) of the cut-and-bonded portion 85 contacts the polarizing film 10. It is possible to avoid, which is very preferable.

In addition, the cut-and-join part 85 is polygonal shape and as shown also in FIG. 7, although it has the cut paper surface 85a and the bonding surface 85b * 85c in the three surfaces, it is a cut paper surface and / or a bonding surface. You may further be provided. For example, the structure which has a cutting paper surface in one surface, the joint surface in three or four surfaces, and the structure in which the cutting paper surface is provided in two surfaces, and the joint surface in three or four surfaces is mentioned. have. In addition, as shown in the cut-and-join portion 85 of FIG. 6, when the joining surface and the cutting support surface and the joining surface are chamfered, and the corner portions are formed, the contact between the cut-and-join portion 85 and the polarizing film can be avoided. It is preferable from a viewpoint. The size of the cut joint 85 may be appropriately determined by the width of the polarizing film 10 and is not particularly limited, but is, for example, 200 mm or more, 2000 mm or less, 10 mm or more, or 300 mm or less. You can do it with width.

7 is a perspective view illustrating the cut joint 85. FIG. 7 shows a state in which the cut joint 85 of FIG. 6 is rotated 1/3 turn clockwise. As shown in FIG. 7, the cut-and-bond part 85 is equipped with the cutting paper surface 85a which supports the polarizing film 10 along the width direction of the polarizing film 10. As shown in FIG. Moreover, it has the bonding surface 85b * 85c provided with the adsorption mechanism 89 which adsorb | sucks the connection material which connects the polarizing films 10 * 20 so that the cutting | disconnection line of the cut polarizing film 10 may be covered. A joining surface can also be set as the structure provided with two or more.

A groove-like opening 86 is formed in the cut paper surface 85a, and the cut portion 85 of the cutter 87 of the cut joint portion 85 shown in FIG. 6 can pass therethrough. Since the opening 86 is formed, passage of the cutter 87 can be reliably performed along the width direction of the polarizing film 10, and the polarizing film 10 · 20 can be connected more accurately.

Since the cutter 87 can employ | adopt a well-known cutter and can cut | disconnect the polarizing film 10 easily, it is preferable that it is ring-shaped. The cutter 87 is supported by a pedestal portion 88 that can be driven in the width direction of the polarizing film 10.

The joining surfaces 85b and 85c have the same structure and are provided with the some adsorption mechanism 89 similarly to the adsorption | suction part 84 * 84a. Moreover, one side adhesive tape (connection material) 85d is arrange | positioned at the bonding surface 85b * 85c, and the non-adhesive surface of the one side adhesive tape 85d is hold | maintained by the adsorption mechanism 89, and one side adhesion It is arrange | positioned so that the adhesive surface of the tape 85d may become a surface opposite to the bonding surface 85b * 85c.

The said one side adhesive tape 85d should just be able to bond polarizing films, and a well-known one side adhesive tape can be used. As the film material of the one-side adhesive tape 85d, for example, polyethylene terephthalate film (PET film), cellulose, paper, aluminum, nonwoven fabric, polytetrafluoroethylene, polyvinyl chloride, polyvinylidene chloride, polycarbonate, poly Urethane, ABS resin, polyester, polystyrene, polyethylene, polypropylene, polyacetal resin, polylactic acid, polyimide, polyamide and the like. Moreover, as an adhesive used for an adhesive layer, an acryl type, an epoch clock, a polyurethane type, a synthetic rubber type, EVA type, a silicone type, a vinyl chloride type, a chloroprene rubber type, a cyanoacrylate type, an isocyanate type, a polyvinyl alcohol And adhesives such as melamine resins.

The film connection part 83 is disposed to face the polarizing film 10. For this reason, in FIG. 5, since the polarizing film 10 is arrange | positioned vertically, the film connection part 83 is also arrange | positioned vertically. On the other hand, when the polarizing film 10 is disposed in an inclined direction (or horizontal direction, for example), the film connecting portion 83 is also in an inclined direction (or so that the film connecting portion 83 and the polarizing film 10 face each other. What is necessary is just a structure arrange | positioned in a horizontal direction etc.).

The film connector 93 has the same structure as the film connector 83. As shown in FIG. 5, the film connection part 83 * 93 is arrange | positioned so that the adsorption mechanism of the adsorption part with which the film connection part 83 * 93 is provided may oppose. Moreover, the film connection part 83 * 93 is arrange | positioned through the passing position of the polarizing film 10 and the polarizing film 20. In addition, the manufacturing system 100 provided with the film connection part 83 * 93 is a preferable form in this embodiment, and it can also be set as the form which does not provide the film connection part 83 * 93.

[Operation of Film Connection]

The operation of the manufacturing system according to the present embodiment will be described below. In addition, the description regarding the said operation also serves as description of the manufacturing method of an optical display apparatus.

First, as shown in FIG. 1, the polarizing film 10 is wound up from the 1st unwinding part 1 (unwinding process). 3, only the polarizing film 10a is half-cut by the half cutter which is not shown in figure, and the peeling film 10b is peeled off by the knife edge 4 (peeling process). Moreover, the polarizing film 10a from which the peeling film 10b was peeled off, and the board | substrate 5 are bonded by crimping | bonding with the nip roll 6 * 6a (bonding process). In addition, the peeled peeling film 10b is wound up and collect | recovered by the winding part which is not shown in figure. By the series of steps described above, the substrate 5 and the polarizing film 10a are bonded to each other to obtain an optical display device.

As the polarizing film 10 is wound in the series of steps, the remaining amount of the roll of the polarizing film 10 held in the first unwinding part 1 decreases. Below, the connection process which connects polarizing films is demonstrated.

In the connecting step, the polarizing film 10 of the first unwinding portions 1, 11 and 1b and the polarizing film 20 of the second unwinding portions 1a, 11a and 1c are cut off. And, among the polarizing films 10 of the first unwinding parts 1, 11, 1b and the polarizing films 20 of the second unwinding parts 1a, 11a, 1c, the first unwinding parts 1, 11 , The polarizing film 10 on the line side of the line side of 1b or the polarizing film 20 on the line side of the second unwinding unit 1a (11a, 1c) and the winding of the second unwinding unit 1a (11a, 1c). The polarizing film 20 on the output side or the polarizing film 10 on the unwinding side of the first unwinding part 1 (11, 1b) is connected. In other words, the "line side" refers to a direction in which the polarizing film is wound. As said connection process, the method using (1) operator and the method using (2) film connection part 83 * 93 are mentioned.

First, the method by the operator of (1) is demonstrated concretely. When connecting polarizing films with an operator, the conveyance speed of the polarizing film 10 is 0 m / min. After making it into (it stops the polarizing film 10), an operator cut | disconnects the polarizing film 10. FIG. Next, after winding the polarizing film 20 from the 2nd unwinding part 1a and cutting an edge part, the method of connecting using the above-mentioned one side adhesive tape 85d is mentioned, for example.

Thus, in the manufacturing system which concerns on this invention, two unwinding parts of the 1st unwinding part 1 and the 2nd unwinding part 1a are provided, and the polarizing film 10 does not need to replace the roll of a polarizing film with a new roll. 20 can be used to connect the film on the fly, so that the polarizing film 20 can be rolled up quickly. Therefore, unlike the manufacturing system in which only one unwinding part is provided in the related art, the work of the disc roll can be performed in the unwinding part on the empty side during operation, so that the time required for the replacement work can be reduced. As a result, it is possible to shorten the manufacturing time of the optical display device. In the manufacturing system, after the connection of the polarizing film 10 · 20 is finished, the roll of the polarizing film 10 of the first unwinding part 1 is replaced with a new roll while the polarizing film 20 is wound up. When the remaining amount of the polarizing film 20 is reduced, it is of course also possible to connect the polarizing film 20 and the polarizing film 10 as well.

Next, the case where the film connection part 83 * 93 is used is demonstrated concretely using FIG. 8 is a process diagram illustrating a connection process by a manufacturing system having a film connection unit. When the residual amount of the polarizing film 10 decreases, as shown in FIG. 8A of the polarizing film 10, the conveyance speed of the polarizing film 10 is 0 m / min. After that, the adsorption portion 84 · 84a and the cut joint portion 85 (film connecting portion 83) are moved in the vertical direction with respect to the polarizing film 10. Next, the polarizing film 10 is adsorbed and fixed by the adsorption mechanism 89 of the adsorption | suction part 84 * 84a (adsorption process).

At this time, in the cut joint 85, the cut paper surface 85a is in contact with the polarizing film 10. Subsequently, as shown in FIG. 8B, a cutter (not shown) is moved along the opening 86 to cut the polarizing film 10 (cutting step). After cutting, the cut joint 85 is perpendicular to the polarizing film 10 and moved away from the polarizing film 10 (right side in the drawing), rotated one-third of a turn counterclockwise, and polarized light. It is perpendicular to the film 10 and is moved in the direction approaching from the polarizing film 10 (left side in the drawing). Thereby, as shown in FIG.8 (c), one side adhesion of the bonding surface 85b so that the cutting line of the polarizing film 10 which opposes one side adhesive tape 85d (not shown) may be covered. The tape 85d is bonded together (bonding step). The said cutting line shows the side which opposes the bonding surface 85b among the cut surfaces produced in the polarizing film 10 by the cutting process. In the bonding process, one side adhesive tape 85d is arrange | positioned so that the said cutting line may be covered, ie, the polarizing film 10 will also be arrange | positioned also in the part in which the polarizing film 10 does not exist.

Moreover, also about the polarizing film 20, one side adhesive tape 95d is adhere | attached on the bonding surface 95b of the polarizing film 20 similarly to FIG.8 (a)-(c). The same name is attached | subjected to the member same as the member mentioned above, and the description is abbreviate | omitted.

First, the polarizing film 20 is wound up from the 2nd unwinding part 1c, similarly to (a) of FIG. 8, after cutting the edge part of the polarizing film 20, the cutter which is not shown in figure is cut out ( The polarizing film 20 is cut by moving along the opening 96 formed in the 95a. After cutting, the cut joint 95 is moved in a direction perpendicular to the polarizing film 20 and moved away from the polarizing film 20 (left side in the drawing), rotated clockwise by 1/3 turn, and the polarizing film ( It is perpendicular to 20), and moves to the direction (right side of drawing) which is approached from the polarizing film 20. As shown in FIG. Thereby, as shown to FIG. 8E, one side adhesive tape 95d so that the cutting line of the polarizing film 20 which opposes the one side adhesive tape 95d of the bonding surface 95b may be covered. Can be attached.

Next, as shown in Fig. 8 (f), the adsorption portion 84 · 84a and the cut joint portion 85 (film connecting device 3) are attached to the adsorption portion 94 · 94a and the cut joint portion 95 ( Close to the film connecting portion 93, the cut surfaces of the polarizing film 10 and the polarizing film 20 are aligned with each other (proximity step). Thereby, in the one side adhesive tape 85d * 95d which covers the cutting line of the polarizing film 10 * 20, the part beyond the cutting line (part which is not bonded to the polarizing film 10 * 20) differs By bonding to the side polarizing film 20 占, the polarizing film 10 占 is connected. In FIG. 8F, the film connecting portion 83 is close to the film connecting portion 93, but the film connecting portion 93 may be close to the film connecting portion 83, and the film connecting portions 83 and 93 are close to each other. You can also do it.

After the polarizing films 10 and 20 are connected, the cut joints 85 and 95 are perpendicular to the polarizing films 10 and 20, respectively, as a preparation step, as shown in Fig. 8G. It moves in the direction away, the cut joint 85 is rotated 1/3 turn clockwise, and the cut joint 95 is rotated 1/3 turn counterclockwise. And the cut joints 85 * 95 are moved to the direction perpendicular | vertical to the polarizing film 10 * 20, respectively.

Finally, the adsorption | suction part 84 * 84a and the cut joint part 85 (film connection part 83) are returned to the position of FIG. 8 (a), and a series of process is complete | finished. In addition, since the one side adhesive tape 85d * 95d is provided in the state by which the adhesive surface 85c * 95c was adsorbed previously, after the roll of the new polarizing film 10 was installed in the 1st unwinding part 1b, The process of FIGS. 8A to 8C for the polarizing film 20 and the processes of FIGS. 8D to 8E of the polarizing film 10 are performed, and as described above, f) Through the process of (h), the polarizing film 20 * 10 can be connected. Moreover, it is also possible to connect a polarizing film continuously by replenishing the used one side adhesive tape 85d * 95d.

As described above, in the case of the connecting step using the film connecting part 83 · 93, the adsorption, cutting, and bonding of the polarizing film can be performed in a shorter time and more accurately than in the connecting step by the operator. It is preferable because of that.

Specifically, in the production system, in the case of the connection step by the operator, about 10 minutes was required, but when the film connection portion 83 · 93 was used, it could be 1 minute or less.

In addition, in the said manufacturing system, when only the 1st unwinding part 1 is used, the 2nd unwinding part 1a is not used, and the film connection part 83 * 93 is not used, an operator does not use the 1st volume. Since it is necessary to replace the polarizing film 10 after replacing a new polarizing film in the exit part 1, about 30 minutes are needed for a connection process. For this reason, it is clear that the manufacturing system which concerns on this embodiment is advantageous.

<Reverse mechanism>

The inversion mechanism 65 is a state in which the short side or the long side along the conveyance direction of the board | substrate 5 is a long side or short side along the conveyance direction, and changes arrangement | positioning in the inverted state. 9A to 9D are perspective views illustrating a process of inverting the substrate 5 by the inversion mechanism. (A) of FIG. 9 shows the state which adsorb | sucks the board | substrate 5 conveyed by the 1st board | substrate carrying mechanism, FIG. 9 (b) and (c) shows the process of moving the board | substrate 5, FIG. 9 (d) shows a state in which the substrate 5 is inverted by the second substrate inverting mechanism. In addition, although the board | substrate conveyance mechanism is abbreviate | omitted in FIG. 9 for convenience of illustration, it mentions later using FIG.

As shown in FIG. 9A, the inversion mechanism 65 includes an adsorption portion 66, a substrate inversion portion 67, and a substrate rotation portion 68. The adsorption part 66 is a member which adsorbs on the surface of the board | substrate 5. As a result, the surface of the substrate 5 is held by the adsorption portion 66. As the adsorption part 66, a well-known adsorption part can be used, for example, the air suction type adsorption part can be used.

The substrate inversion part 67 is equipped with the adsorption | suction part 66, and inverts the board | substrate 5 with the long side or short side of the board | substrate 5 being a lower side. In FIG. 9, the substrate inverting portion 67 has a rotating shaft structure, and the substrate inverting portion 67 rotates to rotate the adsorption portion 66. However, the substrate inversion part 67 is not limited to the said structure, The structure which rotates the adsorption part 66 by a drive part may be sufficient.

The substrate inverting portion 67 inverts the substrate 5 by dividing the first rotation and the second rotation. The inversion of the substrate 5 is divided into a first rotation and a second rotation. Inversion means rotating the board | substrate 5 to the opposite surface, In other words, it arrange | positions so that the surface of the board | substrate 5 may become a back surface.

FIG. 9A illustrates a case where the short side of the substrate 5 is in the conveying direction. As shown in FIG. 9B, the first side of the substrate 5 has the long side of the substrate 5 as the lower side. ) Is rotated (Fig. 9 (a) → Fig. 9 (b)). In the first rotation, the substrate 5 is rotated to a first angle. The first angle is X ° which is less than 180 °. From the viewpoint of simplifying the balance when the substrate 5 rotated in the first rotation by the substrate rotating portion 68 and the design of the inversion mechanism 65 are simplified, the X ° is preferably 80 ° or more and 110 ° or less. , 85 ° or more and 95 ° or less are preferred, and 90 ° is most preferred.

The substrate rotating part 68 is provided in the substrate inverting part 67, and the board | substrate 5 in the 1st board | substrate carrying mechanism which does not show the board | substrate 5 rotated by the 1st rotation, ie, FIG. 90 degrees is rotated in the parallel direction with respect to the surface of the board | substrate 5 shown to FIG. The rotation direction of 90 degrees is made into the inside of the long side or short side which is located in the conveyance direction side more among two long sides or short sides orthogonal to a conveyance direction.

The substrate inverting portion 67 shown in FIG. 9C has a structure in which the base portion rotates. However, the substrate rotating part 68 only needs to be able to rotate the substrate 5 by 90 ° in a direction parallel to the surface of the substrate 5 in the first substrate transport mechanism, and is not limited to the illustrated structure. When using the robot arm which has a control part as the board | substrate inversion part 67 and / or the board | substrate rotation part 68, since the precise board | substrate 5 can be operated, it is preferable. A known robot arm can be used as the robot arm, and the structure is not particularly limited as long as the substrate inverting portion 67 and / or the substrate rotating portion 68 can be operated.

Finally, as shown in FIG.9 (d), the long side or short side of the board | substrate 5 rotated the board | substrate 5 rotated by the 1st rotation by the 2nd rotation by the board | substrate inversion part 67, and the lower side. Rotate it further to invert it. Thereby, the board | substrate 5 is inverted and the short side becomes a state along the conveyance direction.

In FIG. 9D, the long side of the substrate 5 is the lower side. Which one of the long side and short side of the substrate 5 is the lower side in the first rotation and the second rotation, the long side becomes the lower side if the short side is in the conveying direction, and the short side is the lower side if the long side is in the conveying direction. do. In either state, the substrate 5 can be inverted.

FIG. 10 is a plan view illustrating a process of rotating the substrate 5 in FIG. 9. In FIG. 10, the first substrate transfer mechanism 61 and the second substrate transfer mechanism 62 are illustrated in addition to the inversion mechanism 65. The first substrate transfer mechanism 61 and the second substrate transfer mechanism 62 are equipped with a conveyor roll. The 1st board | substrate carrying mechanism 61 and the 2nd board | substrate carrying mechanism 62 are arrange | positioned toward the same direction. That is, the 'L' shape, etc. did not have a complicated structure. Therefore, the bonding apparatus 60 which concerns on this invention is very easy to install, and is excellent in area efficiency.

As described in FIG. 9, first, the surface of the substrate 5 is held by the adsorption portion 66, and the substrate inversion portion 67 is rotated by 90 ° as the first rotation in the direction of the arrow (FIG. 10A). ) → (b) of FIG. 10).

Subsequently, the substrate 5 rotated by the first rotation is parallel to the surface of the substrate 5 in the first substrate transport mechanism 61, that is, the substrate 5 in FIG. 10A. 90 degrees (rotation in the arrow direction of FIG. 10 (b), FIG. 10 (b)-FIG. 10 (c)).

Finally, the substrate 5 is inverted by the second rotation of the substrate inverting portion 67 ((c) of FIG. 10 → (d) of FIG. 10. The adsorption portion 66 and the second substrate conveyance). Conveyor rolls (not shown) of the mechanism 62 are arranged so as not to contact each other, and after the holding of the substrate 5 is released by the adsorption of the adsorption portion 66 released, the substrate 5 is moved to the second substrate transfer mechanism. It conveys by 62. Then, the inversion mechanism 65 returns to the position of FIG. 10 (a), and inverts the other board | substrate 5 conveyed one by one in the same operation | movement.

As described above, according to the inversion mechanism 65, four degrees of adsorption by the adsorption unit 66, the first rotation, the first rotational substrate 90 from the first substrate transporting mechanism 61, and the second rotation 4. The board 5 is inverted by four simple operations, and the long side and the short side in the conveying direction can be changed. After performing the said operation | movement, a polarizing film can be bonded from the lower surface with respect to both surfaces of the board | substrate 5. In addition, since the operation is only four operations, the tact time is short. Thus, a short tact time junction can be realized without disturbing the rectifying environment.

Although the board | substrate 5 is once stopped during the above-mentioned 1st rotation and 2nd rotation, when stopping a board | substrate once during a 1st rotation and a 2nd rotation, ie, when rotating in stages, a 1st rotation and a 1st rotation are respectively performed. Included in two rounds. In other words, rotation of the board | substrate inversion part 67 by the board | substrate inversion part 67 before and behind rotation of the board | substrate 5 by the board | substrate rotation part 68 can be called 1st rotation and 2nd rotation, respectively. .

In FIG. 10, the 1st board | substrate conveyance mechanism 61 and the 2nd board | substrate conveyance mechanism 62 do not arrange | position the conveyance direction in a straight line, but have an adjacent structure. This causes the substrate 5 to be rotated 90 degrees by the substrate rotating portion 68 as shown in FIG. 10 (c). Thus, the conveyance direction of the final substrate 5 as shown in FIG. This is because a deviation occurs between the 61 and the second substrate transfer mechanism 62.

11 is a plan view showing a modification of the bonding apparatus 60 using two inversion mechanisms 65. As a modification of this modification, (1) two inversion mechanisms 65 are provided, (2) the first substrate transport mechanism 61 is provided with a substrate placing portion 61a, and (3) The first substrate transfer mechanism 61 and the second substrate transfer mechanism 62 are arranged in a straight line. In addition, the point that the 1st board | substrate carrying mechanism 61 and the 2nd board | substrate carrying mechanism 62 are arrange | positioned toward the same direction is the same.

The substrate placing portion 61a and the inverting mechanism 65 are arranged at the end of the first substrate carrying mechanism 61 on the second substrate carrying mechanism 62 side in the conveying direction of the first substrate carrying mechanism 61 at the end. It is provided along both directions horizontal with respect to. The inversion mechanism 65 has the structure described with reference to FIGS. 9 and 10. Moreover, the said conveyance means which conveys the board | substrate 5 to the board | substrate mounting part 61a is provided in the said edge part, Specifically, a conveyor roll is mentioned, for example.

The board | substrate mounting part 61a is a place used as an end point which the board | substrate 5 is conveyed before 1st rotation. According to the said structure, the board | substrate 5 conveyed to the 1st board | substrate carrying mechanism 61 is conveyed alternately to the two board | substrate mounting part 61a. Since the substrate placing portion 61a and the inverting mechanism 65 are provided in pairs, the substrate 5 conveyed to the substrate placing portion 61a is rotated by the inverting mechanism 65 in the first rotation, 90 ° rotation, and the like. 2 turns are made and reversed.

In this modification, since the two substrate placing parts 61a are provided along the horizontal direction of the 1st board | substrate carrying mechanism 61, respectively, the inverted board | substrate 5 of the 1st board | substrate carrying mechanism 61 is carried out. It is arranged along the conveying direction. Therefore, it is possible to arrange | position the 1st board | substrate carrying mechanism 61 and the 2nd board | substrate carrying mechanism 62 in a straight line.

According to this modification, since (1) two inversion mechanisms 65 are provided, the substrate 5 can be processed twice per unit time. As a result, since many substrates 5 can be inverted per unit time, the tact time is shortened. (2) Moreover, since the 1st board | substrate carrying mechanism 61 and the 2nd board | substrate carrying mechanism 62 are arrange | positioned in a straight line, the joining apparatus of the structure which is more excellent in area efficiency can be provided. Since the area efficiency is required especially in a clean room, the said bonding apparatus is very preferable.

<Other Incidents>

Moreover, as a preferable aspect, the manufacturing system 100 is provided with the control part 70, the washing | cleaning part 71, the bonding misalignment inspection apparatus 72, the bonded foreign matter automatic inspection apparatus 73, and the division conveyance apparatus 74. have. The bonding shift inspection apparatus 72, the bonding foreign matter automatic inspection apparatus 73, and the division conveyance apparatus 74 perform a process, such as inspection, with respect to the board | substrate 5 after bonding, ie, a liquid crystal display device.

FIG. 12 is a block diagram showing the relationship between each member included in the manufacturing system of the liquid crystal display device, and FIG. 13 is a flowchart showing the operation of the manufacturing system of the liquid crystal display device. Hereinafter, the operation | movement is demonstrated with description of each member with which a liquid crystal display device is equipped.

The control part 70 is connected with the washing | cleaning part 71, the bonding shift | offset | difference test | inspection apparatus 72, the bonded object automatic inspection apparatus 73, and the division conveyance apparatus 74, and transmits a control signal to them, and controls it. . The control part 70 is mainly comprised by CPU (Central Processing Unit), and is equipped with a memory etc. as needed.

When the cleaning system 71 is provided in the manufacturing system 100, in order to shorten the tact time in the cleaning unit 71, the substrate 5 in the first substrate transfer mechanism 61 is formed to have a long side width. It is preferable to be returned to the government 71. Usually, since the washing | cleaning in the washing | cleaning part 71 requires a long time, the said structure is very effective from a viewpoint of shortening a tact time.

Next, although the bonding process of bonding a polarizing film to both surfaces of the board | substrate 5 is performed (S2 of FIG. 13), this process drawing is as having demonstrated using FIG. 1 thru | or FIG.

The bonding shift inspection apparatus 72 inspects the presence or absence of bonding shift of the polarizing film in the bonded substrate 5. The bonding shift inspection apparatus 72 is constituted by a camera and an image processing apparatus, and the camera is provided at the bonding position of the substrate 5 to which the polarizing film is bonded by the nip roll 16 · 16a. The photographing of the board | substrate 5 is performed with the said camera, and by processing the image | photographed image information, the presence or absence of the bonding shift | offset to the board | substrate 5 can be inspected (bonding shift | offset | difference inspection process, S3 of FIG. 13). In addition, a conventionally well-known bond shift inspection apparatus can be used as the junction shift inspection apparatus 72.

The bonded foreign matter inspection device 73 inspects the presence or absence of foreign matter on the bonded substrate 5. The bonded foreign material automatic inspection device 73 is constituted by a camera and an image processing device similarly to the bonding misalignment inspection device 72, and the substrate 5 after the polarizing film is bonded by the nip roll 16 · 16a. The camera is installed in the second substrate transfer mechanism (bonding device 60) of the apparatus. The photographing of the board | substrate 5 is performed with the said camera, and it can test the presence or absence of a foreign material on the board | substrate 5 by processing the photographed image information (bonded foreign material inspection process, S4). As said foreign material, foreign materials, such as dust, a fisheye, etc. are mentioned. In addition, a conventionally well-known bonded foreign matter inspection apparatus can be used as the bonded foreign substance automatic inspection apparatus 73.

S3 and S4 may be made in the reverse order, and may be made simultaneously. It is also possible to omit one step.

The division conveying apparatus 74 judges the presence or absence of a bonding shift | offset and a foreign material based on the inspection result from the bonding shift | offset | difference test | inspection apparatus 72 and the bonded object automatic inspection apparatus 73. As shown in FIG. The separation conveying device 74 receives an output signal based on the inspection result from the bonding disparity inspection device 72 and the automatic bonding object inspection device 73, and divides the bonded substrate 5 into a good or defective product. All you can do is. Therefore, the conventionally well-known division conveying system can be used.

In the manufacturing system of the said liquid crystal display device, as a preferable aspect, it is a structure which detects both a bonding shift | offset and a foreign material, and when it determines with a bonding shift or a foreign material being inspected (Yes), the bonded board | substrate 5 is classified as a defective product. (S7). On the other hand, when it is determined that neither the bonding shift | offset | difference nor a foreign material was detected (No), the bonded board | substrate 5 is divided as a good product (S6).

According to the manufacturing system of the liquid crystal display device provided with the division conveying apparatus 74, it is possible to quickly distinguish between good and bad products, and shorten the tact time. When only the joint shift inspection apparatus 72 or the bonded foreign matter automatic inspection apparatus 73 is provided, the division conveyance apparatus 74 may be the structure which determines only one of a junction shift and a foreign material.

In addition, the specific embodiment made in the term of the detailed description of the present invention is to make clear the technical content of this invention to the last, It should not be interpreted by consultation only to such a specific example, and it is described in the spirit of this invention and the following. Various changes can be made within the scope of the claims.

Moreover, the following forms are also included in this invention.

Moreover, in the bonding apparatus of the polarizing film of this invention, the said 1st board | substrate conveyance mechanism and the 2nd board | substrate conveyance mechanism are arrange | positioned in a straight line, The said edge part at the edge part by the side of the 2nd board | substrate conveyance mechanism side in a 1st substrate conveyance mechanism Two pairs of substrate placing units and the inverting mechanisms are provided along both directions horizontal to the conveying direction of the first substrate transfer mechanism of the first substrate transfer mechanism, and the end portion is provided with transfer means for transferring the substrate from the end portion to the substrate placing portion. It is preferable that the said inversion mechanism inverts the board | substrate conveyed by each of the said board | substrate mounting parts, and to arrange | position it to a 2nd board | substrate carrying mechanism.

According to the above configuration, since two inversion mechanisms are provided, the substrate can be processed twice per unit time. As a result, since many substrates can be inverted per unit time, the tact time is shortened. Moreover, since the 1st board | substrate carrying mechanism and the 2nd board | substrate carrying mechanism are arrange | positioned in a straight line, the bonding apparatus of the structure which is more excellent in area efficiency can be provided.

Moreover, in the bonding apparatus of the polarizing film of this invention, the 1st film conveyance mechanism and the 2nd film conveyance mechanism which convey a polarizing film are provided, and the said 1st film conveyance mechanism winds up the polarizing film protected by the peeling film. A plurality of unwinding parts, a cutting part for cutting the polarizing film, a removing part for removing the peeling film from the polarizing film, and a plurality of winding parts for winding the removed peeling film are provided, and the second film transport mechanism is a peeling film And a plurality of unwinding portions for winding the polarizing film protected by the film, a cutting portion for cutting the polarizing film, a removing portion for removing the peeling film from the polarizing film, and a plurality of winding portions for winding the removed peeling film. The first substrate transport mechanism and the second substrate transport mechanism are provided on the first film transport mechanism and the second film transport mechanism, and the polarizing film from which the release film is removed is provided. The second bonding portion for bonding the polarizing film from which the release film is removed to the substrate is formed between the first film transport mechanism and the first substrate transport mechanism. It is preferable that each is provided between the 2nd board | substrate carrying mechanisms.

As a result, since a plurality of unwinding portions and winding-up portions are provided, when the remaining amount of the disk of the polarizing film in one unwinding portion is reduced, it is possible to connect the disks provided in the other unwinding portion to the disc. . As a result, work can be continued without stopping winding of a polarizing film, and production efficiency can be improved.

Moreover, in the bonding apparatus of the polarizing film of this invention, it is preferable that the said unwinding part is movable horizontally with respect to the winding direction of a polarizing film, and the 1st unwinding part and the 2nd unwinding part which are the said unwinding parts are provided in parallel.

As a result, since the unwinding portion moves horizontally in the winding direction, it is not necessary to secure a space in which the unwinding portion moves upward. Therefore, the space of the unwinding part which the 1st board | substrate carrying mechanism and the 2nd board | substrate carrying mechanism which were provided in the upper part, and the said 1st film carrying mechanism and the 2nd film carrying mechanism in the lower part can be saved. As a result, a miniaturized bonding apparatus can be provided.

Moreover, in the bonding apparatus of the polarizing film of this invention, the said 1st film connection part and the 2nd film connection part which connect the polarizing film wound from the 1st unwinding part and the polarizing film wound from the 2nd unwinding part are said both polarized light The first film connecting portion is disposed to face the polarizing film wound from the first unwinding portion, and the second film connecting portion is disposed opposite to the polarizing film wound from the second unwinding portion via the passing position of the film. The first film connection part and the second film connection part are disposed between two adsorption parts including an adsorption mechanism capable of adsorbing the polarizing film and the two adsorption parts, and are rotatably disposed along the width direction of the polarizing film. And a cut joint, wherein the cut joint includes a cutter for cutting the polarizing film, and the plurality of surfaces of the cut joint are arranged along the width direction of the polarizing film. At least two bonding surfaces, each having a cutting support surface for supporting a film and an adsorption mechanism for adsorbing and holding a connection material connecting the polarizing films, wherein the first film connection portion and the second film connection portion are adjacent to each other. It is desirable that it is possible.

Thereby, a polarizing film is adsorbed by the said adsorption part, and it can cut | disconnect with a cutter in the state which supported the adsorbed polarizing film by the cutting paper surface. Thereafter, the cut joint is rotated, and the connecting member on the bonding surface can be bonded to the cut polarizing film. In addition, the first film connecting portion and the second film connecting portion may be adjacent to each other, and the two polarizing films to which the connecting material is bonded may be easily contacted.

Moreover, in the bonding apparatus of the polarizing film of this invention, it is preferable that the opening which the said cutter can pass along the width direction of the said polarizing film is formed in the said cutting paper surface.

Thereby, passing of a cutter can be reliably performed along the width direction of a polarizing film, and it can connect the polarizing films later more accurately.

Moreover, in the bonding apparatus of the polarizing film of this invention, it is preferable that the said cutter is a ring shape.

Thereby, it becomes possible to cut | disconnect a polarizing film more easily.

Moreover, in the bonding apparatus of the polarizing film of this invention, it is preferable that the said cut-bonding part can move to a perpendicular direction with respect to the polarizing film adsorbed by the adsorption part.

As a result, when the cut joint is rotated, the cut joint is perpendicular to the polarizing film, can move in a direction away from the polarizing film, and can then rotate. Thereby, it can reliably avoid contacting a polarizing film when a cut joint part rotates.

Moreover, in the bonding apparatus of the polarizing film of this invention, the said 1st board | substrate conveyance mechanism is provided with the washing | cleaning part which wash | cleans a board | substrate before bonding a polarizing film to the lower surface of a board | substrate by a said 1st bonding part. It is preferable to convey a board | substrate in the state along a conveyance direction.

Thereby, the board | substrate can be wash | cleaned by a washing | cleaning part in the state which the long side of a board | substrate orthogonally crosses with respect to the conveyance direction of a board | substrate. That is, since the distance of the board | substrate along a conveyance direction can be made small, the tact time required for washing | cleaning can be shortened more. As a result, it is possible to provide a bonding device for polarizing film which is more excellent in production efficiency.

In addition, in the bonding apparatus of the polarizing film of the present invention, the first film transport mechanism and the second film transport mechanism include a defect detection unit for detecting a defect indication attached to the polarizing film wound from the first unwinding unit, and the defect display. It is preferable to have a recovery avoidance part which discriminates | determines and stops conveyance of the said board | substrate, and a collection | recovery part which collect | recovers the polarizing film in which bonding with the board | substrate was avoided.

According to the said defect detection part, the bonding avoiding part, and a collection part, since the bonding of the polarizing film and board | substrate which have a fault can be avoided, a yield can be improved.

The manufacturing system of the liquid crystal display device of this invention is equipped with the bonding apparatus of the said polarizing film, and the bonding misalignment inspection apparatus which inspects the bonding misalignment in the board | substrate with which the polarizing film was bonded by the said 2nd bonding part.

Thereby, it is possible to test the bonding shift which occurred in the board | substrate which bonded the polarizing film.

Moreover, in the manufacturing system of the liquid crystal display device of this invention, it is judged the presence or absence of the bonding misalignment based on the inspection result by the said bonding misalignment inspection apparatus, and discriminates the board | substrate with which the polarizing film was bonded based on the said determination result. It is preferable to provide a division conveying apparatus.

Thereby, when a bonding shift arises in the board | substrate with which the polarizing film was laminated | stacked, a defective product can be distinguished quickly and it is possible to shorten a tact time.

Moreover, in the manufacturing system of the liquid crystal display device of this invention, the bonding foreign material automatic inspection apparatus which inspects the foreign material on the board | substrate with which the polarizing film was bonded by the bonding apparatus of a polarizing film and the 2nd bonding part in the said bonding apparatus. It is preferable to provide.

Thereby, the foreign material mixed in the liquid crystal panel which bonded the polarizing film can be inspected.

Moreover, in the manufacturing system of the liquid crystal display device of this invention, the presence or absence of a foreign material is determined based on the inspection result by the said bonding foreign material automatic inspection apparatus, and based on the said determination result, the division of the board | substrate with which the polarizing film was bonded was made. It is preferable to provide the division conveying apparatus to perform.

Thereby, when a foreign material mixes in the liquid crystal panel which bonded the polarizing film, the defective article can be distinguished quickly, and it is possible to shorten a tact time.

Moreover, the manufacturing system of the liquid crystal display device of this invention is equipped with the bonded foreign material automatic inspection apparatus which inspects the foreign material in the board | substrate with which the polarizing film was bonded by the said 2nd bonding part, and test | inspected by the said junction misalignment inspection apparatus. On the basis of the result and the inspection result by the said bonded foreign material automatic inspection apparatus, it judges the presence or absence of a bonding shift | offset and a foreign material, and based on the said determination result, it is provided with the division conveying apparatus which distinguishes the board | substrate with which the polarizing film was bonded. It is preferable.

Thereby, when the bonding shift | offset | difference or a foreign material mixing arises in the liquid crystal panel which laminated | stacked the polarizing film, it can divide the defective goods quickly and can shorten a tact time.

Industrial availability

The bonding apparatus of the polarizing film which concerns on this invention can be utilized in the field which bonds a polarizing film to a board | substrate.

1, 1b 1st unwinding part 1a, 1c 2nd unwinding part
1d winding 2 first winding
2a 2nd winding part 3 half cutter
4 Knife Edge 5 Boards
6 · 6a nip roll (first joint) 7 · 7a defect film winding roller
10-20 Polarizing Film 10a Polarizing Film
10b release film 11 first unwinding part
11a 2nd winding part 12 1st winding part
12a 2nd winding 13 half cutter
14 Knife Edge 15 Conveyor Roll
16 · 16a Nip Roll (Second Bonding Part) 17 · 17a Defective Film Winding Roller
40 HEPA Filter 41 Grating
50 Film transport mechanism 51 First film transport mechanism
52 Second Film Transfer Device 60 Bonding Device (Polarizing Film Bonding Device)
61 1st board conveying mechanism 61a board mounting part
62 Second substrate transfer mechanism 65 Reverse mechanism
66 Adsorber 67 Substrate Inverter
68 Substrate Rotation 70 Control Unit
71 Cleaning unit 72 Bonding misalignment inspection device
73 Automated Inspection System for Bonded Foreign Objects 74 Classification Transfer Device
83 · 93 Film Connection 84 · 84a · 94 · 94a Adsorption
85/95 cutting joint 85a / 95a cutting paper surface
85b, 85c, 95b, 95c Bonded Surface 85d, 95d One Side Adhesive Tape
86 · 96 opening 87 cutting machine
88 Pedestal 89 Suction mechanism
100 Manufacturing system (manufacturing system of liquid crystal display device)

Claims (15)

A first substrate conveying mechanism for conveying a rectangular substrate in a state in which a long side or a short side is along the conveying direction;
A first bonding portion for bonding a polarizing film to a lower surface of the substrate in the first substrate transport mechanism;
An inversion mechanism for inverting the substrate conveyed by the first substrate transport mechanism and placing the substrate on the second substrate transport mechanism;
A second substrate conveying mechanism for conveying the substrate with a short side or a long side along a conveying direction;
A polarizing film bonding apparatus comprising a second bonding portion for bonding a polarizing film to a lower surface of the substrate in the second substrate transport mechanism,
The first substrate transfer mechanism and the second substrate transfer mechanism are arranged in the same direction,
The reversal mechanism includes an adsorption unit for adsorbing the substrate;
With the short side or long side of the substrate as the lower side, the substrate is moved by a first rotation for rotating the substrate adsorbed by the adsorption unit to the first angle and a second rotation for inverting the substrate from the first angle to the second substrate transfer mechanism. A substrate inverting part to invert,
The substrate, which is connected to the substrate inverting unit and rotated by the first rotation, is rotated by 90 ° about an axis perpendicular to the surface of the substrate in the first substrate transport mechanism, and is a short side or long side that is a lower side of the substrate. A substrate rotating part for changing the arrangement of the substrate in a state along the conveying direction of the substrate in the second substrate conveying mechanism,
The substrate rotating part includes the suction part,
Adsorb | sucks the board | substrate conveyed by the said board | substrate conveyance mechanism by the said adsorption part,
After rotating the substrate to a first angle by the first rotation of the substrate inverting portion,
The arrangement of the substrate is changed so that the short side or the long side, which is the lower side of the substrate, along the transfer direction of the substrate in the second substrate transfer mechanism by the substrate rotating unit,
And a second substrate transport mechanism rotating the substrate from a first angle by a second rotation of the substrate inverting portion. The method according to claim 1,
The first substrate transfer mechanism and the second substrate transfer mechanism are arranged in a straight line,
Two pairs of substrate placing parts and the inverting mechanism are arranged along the bidirectional horizontally with respect to the conveying direction of the first substrate conveying mechanism at the end at the end on the side of the second substrate conveying mechanism in the first substrate conveying mechanism. Equipped with
The said end part is equipped with the conveying means which conveys a board | substrate from the said end to the said board | substrate mounting part,
And the inversion mechanism inverts the substrates conveyed to each of the substrate placing units and arranges the substrates in the second substrate transport mechanism. The method according to claim 1 or 2,
A first film transport mechanism and a second film transport mechanism for transporting the polarizing film,
The first film conveying mechanism includes a plurality of unwinding portions for winding the polarizing film protected by the peeling film, a cutting portion for cutting the polarizing film, a removing portion for removing the peeling film from the polarizing film, and A plurality of windings for winding the release film is provided,
The second film conveying mechanism includes a plurality of unwinding portions for winding the polarizing film protected by the peeling film, a cutting portion for cutting the polarizing film, a removing portion for removing the peeling film from the polarizing film, and winding the removed peeling film. A plurality of windings are provided,
The first substrate transfer mechanism and the second substrate transfer mechanism are provided on an upper portion of the first film transfer mechanism and the second film transfer mechanism,
A second bonding portion for bonding the polarizing film from which the release film is removed to the substrate, between the first film transporting mechanism and the first substrate transporting mechanism; And a bonding portion is provided between the second film transport mechanism and the second substrate transport mechanism, respectively. The method according to claim 3,
The unwinding portion is movable horizontally with respect to the winding core direction of the polarizing film,
The 1st unwinding part and the 2nd unwinding part which are the said unwinding parts are provided in parallel, The bonding apparatus of the polarizing film characterized by the above-mentioned. The method of claim 4,
The first film connecting portion and the second film connecting portion, which connect the polarizing film wound from the first unwinding part and the polarizing film wound from the second unwinding part, are interposed through the passage position of the above-mentioned positive polarizing film, and The first film connecting portion is disposed opposite the polarizing film wound from the first unwinding portion, and the second film connecting portion is disposed opposite the polarizing film wound from the second unwinding portion,
The first film connection part and the second film connection part are disposed between two adsorption parts having an adsorption mechanism capable of adsorbing the polarizing film and the two adsorption parts, and are rotatably disposed along the width direction of the polarizing film. It has a cutting joint
The cut joint portion includes a cutter for cutting in a state in which the polarizing film adsorbed by the adsorption portion is supported by a cutting paper surface, and the plurality of surfaces of the cut joint portion support the polarizing film along the width direction of the polarizing film. At least two bonding surfaces having a cutting paper surface to be attached and an adsorption mechanism for absorbing and holding a connection material connecting the polarizing films to each other,
The connecting member is bonded to the cut polarizing film is cut over the cut line of the cut polarizing film, the first film connecting portion and the second film connecting portion can be close to each other,
The polarizing film of the line side of the 1st unwinding part adsorbed by the said adsorption part, or the line side of the 2nd unwinding part among the polarizing films cut | disconnected by making the said 1st film connection part and the 2nd film connection part proximate, and the said adsorption part And a polarizing film on the unwinding side of the second unwinding portion or the unwinding side of the first unwinding portion, which is adsorbed by the second unwinding portion, by a connecting member bonded over the cutting line of the polarizing film. The method according to claim 5,
And an opening through which the cutter is allowed to pass along the width direction of the polarizing film. The method of claim 6,
Bonding device of the polarizing film, characterized in that the cutter is ring-shaped. The method according to claim 5,
The cutting and bonding unit is a polarizing film bonding apparatus characterized in that the movable in the vertical direction with respect to the polarizing film adsorbed by the adsorption unit. The method according to claim 1,
The cleaning part which wash | cleans a board | substrate before bonding a polarizing film to the lower surface of a board | substrate by a said 1st bonding part is provided,
The first substrate transport mechanism is a bonding device for a polarizing film, characterized in that for transporting the substrate in a state that the short side of the substrate along the conveying direction. The method according to claim 3,
The first film transport mechanism and the second film transport mechanism include a defect detection unit for detecting a defect mark attached to the polarizing film wound from the first unwinding unit;
A joint avoiding portion for discriminating the defect display and stopping the conveyance of the substrate;
A bonding apparatus for a polarizing film, characterized in that it has a recovery section for recovering the polarizing film avoided bonding with the substrate. The bonding apparatus of the polarizing film of any one of Claims 1-10,
And a bonding misalignment inspection device for inspecting the bonding misalignment in the substrate on which the polarizing film is bonded by the second bonding portion. The method of claim 11,
A liquid crystal display device comprising: a division transport device for determining the presence or absence of a bonding misalignment based on the inspection result by the bonding misalignment inspection device, and for discriminating the substrate on which the polarizing film is bonded based on the determination result. Manufacturing system. The bonding apparatus of the polarizing film of any one of Claims 1-10,
And a bonded foreign matter automatic inspection device for inspecting foreign matters on the substrate on which the polarizing film is bonded by the second bonding portion in the bonding apparatus. The method according to claim 13,
A liquid crystal display is characterized by comprising a separation conveying apparatus for determining the presence or absence of a foreign substance on the basis of the inspection result by the automatic bonding foreign matter inspection device, and for discriminating the substrate on which the polarizing film is bonded based on the determination result. Manufacturing system of the device. The method of claim 11,
It is provided with a bonded foreign material automatic inspection device for inspecting the foreign matter on the substrate on which the polarizing film is bonded by the second bonding portion,
On the basis of the inspection result by the bonding misalignment inspection apparatus and the inspection result by the automatic bonding foreign matter inspection apparatus, the presence or absence of bonding misalignment and foreign matter is determined, and the classification of the substrate on which the polarizing film is bonded is based on the determination result. A system for manufacturing a liquid crystal display device, comprising: a transfer device for carrying out the separation.

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