JP2013123915A - Method of plastering film material and device of plastering film material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of plastering a film material which surely prevents a foreign substance from mixing in when the film material is plastered on an optical member and which does not badly affect the conveyance of the optical member, and to provide a device of plastering the film material.SOLUTION: The device of plastering the film material has a first dust collector 12 (a second dust collector 16) sucking and removing dust in the surroundings of a conveyed liquid crystal panel P (one side plastered panel P11), the first dust collector 12 being arranged on this side of a plastering roll 23 plastering a plastering sheet conveyed with a conveying means 22 on the liquid crystal panel P (one side plastered panel P11) conveyed with a roller conveyor 5.

Description

  The present invention relates to a film material bonding method and a film material bonding apparatus.

  DESCRIPTION OF RELATED ART Conventionally, the bonding apparatus of the film material which bonds a polarizing film to a liquid crystal panel and manufactures an optical display apparatus is known. This film material bonding apparatus includes a transport conveyor that transports a liquid crystal panel, and an unwinding unit that is disposed below the transport conveyor and supports a roll on which a polarizing film sheet is wound. A cutting device and a knife edge are arranged below the conveyor, and the polarizing film sheet unwound from the roll is half-cut with the cutting device, the protective film is peeled off with the knife edge, and the cut polarizing film is removed with a nip roll. Bonded to the LCD panel. (See Patent Document 1).

JP 2011-154340 A

  In a conventional film material laminating device, while being sandwiched between nip rolls so that air does not enter between the adhesive material on the laminating surface of the film material to be bonded to the optical display device and the optical display device. Although they are pasted together, if a foreign substance is mixed into the pasting surface, that part becomes a problem in quality.

  Therefore, the present invention reliably prevents foreign substances such as dust from being mixed when the film material is bonded to the optical member, and does not adversely affect the conveyance of the optical member and It aims at providing the bonding apparatus of a film material.

  In order to achieve the above object, the film material bonding method of the present invention is conveyed before the bonding step of bonding the optical member conveyed by the conveyor and the film material conveyed by the conveying device. And a dust collecting step for sucking and removing dust from the optical member.

Moreover, the bonding apparatus of the film material of this invention is the conveyance conveyor by which the optical member used as bonding object is conveyed, the conveying apparatus by which the film material bonded by the said optical member is conveyed, and the said conveying apparatus. A bonding part for bonding the film material to be transported to the surface of the optical member transported from the transport conveyor, and disposed on the upstream side of the bonding part in the optical member transport direction, and dust on the optical member. And a dust collecting device for suction and removal.
In addition, the dust collector covers at least a part of the transport direction of the optical member to be transported from above and below to form a buffer chamber, and a suction device that is connected to the buffer chamber and sucks the internal atmosphere And may be provided.
Further, the suction device may be connected to a lower portion of the dust collector main body.
The dust collector may include a static eliminator that neutralizes the optical member transported into the dust collector main body.

  According to this invention, since the optical member and the film material can be bonded at the bonding portion in the bonding process after the dust is removed by the dust collecting device in the dust collecting process, the dust is removed from the optical member after the dust is removed. Bonding can be performed in a state where the room for adhesion is minimized, and the product quality can be improved.

1 is an overall side view of an embodiment of the present invention. It is A arrow directional view of FIG. It is a top view of the liquid crystal panel of embodiment of this invention. It is sectional drawing of the polarizing film sheet of embodiment of this invention. It is a perspective view of a dust collector of an embodiment of this invention. It is sectional drawing which follows the BB line of FIG. It is C arrow line view of FIG.

  Next, 1st Embodiment of this invention is described based on drawing. 1 and 2 show a film material laminating apparatus 1 according to an embodiment of the present invention. The film material bonding apparatus 1 is an apparatus that is provided as one step of a production line of the liquid crystal panel P, and that bonds the polarizing film F1 with the polarization axes orthogonal to each other on the front and back surfaces of the liquid crystal panel P.

As shown in FIG. 3, the liquid crystal panel P is used in an optical display device such as a television set, is formed in a rectangular shape, and is disposed in a first substrate P1 and a first substrate P1 facing the first substrate P1. Two substrates P2 and a liquid crystal layer P3 sealed between the first substrate P1 and the second substrate P2. A range that fits inside the outer periphery of the liquid crystal layer P3 is a display region P4.
The polarizing film affixed on the front and back of this liquid crystal panel P is cut out while unwinding a polarizing film sheet wound in a roll shape.

FIG. 4 shows a cross-sectional view of the polarizing film sheet. In FIG. 4, cross-sectional hatching is omitted for the sake of illustration. In FIG. 4, a polarizing film sheet F includes a polarizing film F1, a separator F3 that is peelably laminated via an adhesive layer F2 applied to one surface (upper surface in the drawing) of the polarizing film F1, and a polarizing film F1. It is comprised with the surface protection film F4 (separated later) laminated | stacked on the other surface (lower side in a figure). The polarizing film F1 functions as a polarizing plate, and is bonded over the entire display area P4 of the liquid crystal panel P and its peripheral area.
The polarizing film F1 is bonded to the liquid crystal panel P by the adhesive layer F2 exposed by peeling the separator F3. In addition, the part remove | excluding the separator F3 from the polarizing film sheet F becomes the bonding sheet | seat F5.
The polarizing film F1 is configured by sandwiching both surfaces of a polarizer F6 between a first film F7 and a second film F8.

Here, the structure which the polarizing film sheet F does not contain the surface protective film F4, or the structure where the surface protective film F4 is not isolate | separated from the polarizing film F1 may be sufficient.
In addition, the polarizing film F1 may have a single layer structure including one optical layer, or may have a stacked structure in which a plurality of optical layers are stacked on each other, and does not include at least one of the first film F7 and the second film F8. Also good. For example, when the first film F7 is omitted, the separator F3 may be bonded to one surface of the polarizing film F1 via the adhesive layer F2.

As shown in FIG. 1, the film material laminating device 1 reaches from the upstream side in the transport direction of the liquid crystal panel P on the right side in the drawing to the downstream side in the transport direction of the liquid crystal panel P on the left side in the drawing, It is provided with a drive type roller conveyor 5 which is conveyed by
The roller conveyor 5 is divided into an upstream conveyor 6 and a downstream conveyor 7 with a first reversing device 15 described later as a boundary. In the upstream conveyor 6, the liquid crystal panel P is conveyed so that the short side of the display area P4 is along the conveyance direction, and in the downstream conveyor 7, the liquid crystal panel P is such that the long side of the display area P4 is along the conveyance direction. (See FIG. 2). A bonding sheet F5 cut out to a predetermined length from the belt-shaped polarizing film sheet F is bonded to the front and back surfaces of the liquid crystal panel P. Each part of the film material bonding apparatus 1 is controlled by a control unit (not shown). The upstream conveyor 6 includes a free roller conveyor 24 that is independent on the downstream side in the first suction device 11 described later, and the downstream conveyor 7 is independent on the downstream side in the second suction device 20 described later. The free roller conveyor 24 is provided.

  The film material laminating apparatus 1 adsorbs the liquid crystal panel P, which is provided so as to cover the liquid crystal panel P to be conveyed from above and below, and conveys the liquid crystal panel P to the upstream conveyor 6 and liquid crystal. The first suction device 11 that performs alignment (positioning) of the panel P, the first bonding device 13 that is provided on the downstream side of the panel conveyance relative to the first suction device 11, and the downstream side of the panel conveyance relative to the first bonding device 13 The first shift inspection device 14 disposed on the first side and the one-side bonded panel P11 which is disposed on the downstream side of the panel transport relative to the first shift inspection device 14 and reaches the carry-out end of the upstream conveyor 6 is carried into the downstream conveyor 7 A first reversing device 15 is provided at a position that reaches the end of the first reversing device 15 that is reversed and rotated by 90 °.

  Moreover, the film material bonding apparatus 1 includes a second dust collector 16 provided so as to cover the single-sided bonding panel P11 from above and below on the downstream side of the panel conveyance from the carry-in end of the downstream conveyor 7; The second suction device that adsorbs the single-sided bonding panel P11 that is arranged and conveyed downstream of the dust collector 16 and conveys it to the downstream conveyor 7 and performs alignment (positioning) of the single-sided bonding panel P11. 20, the second bonding device 17 disposed on the downstream side of the panel conveyance with respect to the second adsorption device 20, the second displacement inspection device 18 disposed on the downstream side of the panel conveyance with respect to the second bonding device 17, and A second reversing device 19 disposed on the downstream side of the panel conveyance with respect to the second displacement inspection device 18 and a defect inspection device 21 disposed on the downstream side of the second conveyance device with respect to the panel conveyance are provided. The defect inspection apparatus 21 includes a camera 21a for defect detection.

  The 1st dust collector 12 is arrange | positioned in the conveyance direction upstream of the liquid crystal panel P of the pinching roll 23 which is the bonding position of the 1st bonding apparatus 13, and single-sided bonding before being introduced into the pinching roll 23 In order to remove dust around the panel P11, particularly dust on the lower surface side, static electricity is removed and dust is collected.

The first suction device 11 holds the liquid crystal panel P in contact with the downstream stopper S by the drive conveyor so that the liquid crystal panel P can be moved in the vertical direction and the horizontal direction, and aligns the liquid crystal panel P. An alignment camera 11b for performing alignment of the liquid crystal panel P while being held by the portion 11a, and a rail R are provided.
The panel holding unit 11a sucks and holds the liquid crystal panel P that has passed through the first dust collector 12 by vacuum suction with the suction pad 26 of the suction table 25, and moves on the rail R in this state to transport the liquid crystal panel P. When the conveyance is finished, the suction state of the liquid crystal panel P is released, and the liquid crystal panel P is delivered to the free roller conveyor 24.

The alignment camera 11b holds the liquid crystal panel P in contact with the stopper S by the panel holding portion 11a, and photographs the alignment mark, the tip shape, and the like of the liquid crystal panel P in the raised state. Imaging data from the alignment camera 11b is transmitted to the control device, and based on this imaging data, the panel holding unit 11a is operated to align the liquid crystal panel P with the free roller conveyor 24 as the transport destination. In other words, the liquid crystal panel P is transported to the free roller conveyor 24 in consideration of the transport direction with respect to the free roller conveyor 24, the direction orthogonal to the transport direction, and the deviation in the turning direction around the vertical axis of the liquid crystal panel P. .
Here, the liquid crystal panel P conveyed on the rail R by the panel holding portion 11a is sandwiched by the pressure roll 23 together with a bonding sheet F5 described later in a state of being sucked by the suction pad 26.

The 1st bonding apparatus 13 bonds the bonding sheet | seat F5 cut into the predetermined size with respect to the lower surface of liquid crystal panel P introduced into the bonding position.
As for the 1st bonding apparatus 13, the conveying apparatus 22 which conveys the polarizing film sheet F along the longitudinal direction, unwinding the polarizing film sheet F from the roll R1 in which the polarizing film sheet F was wound, and the conveying apparatus 22 There is provided a pinching roll 23 for bonding a bonding sheet F5 having a predetermined length separated from the polarizing film sheet F to the lower surface of the liquid crystal panel P conveyed by the upstream conveyor 6.

  The conveying device 22 conveys the bonding sheet F5 using the separator F3 as a carrier, and holds the roll R1 around which the belt-shaped polarizing film sheet F is wound and roll holding the polarizing film sheet F along its longitudinal direction. Part 22a, a plurality of guide rollers 22b around which the polarizing film sheet F is wound in order to guide the polarizing film sheet F unwound from the roll R1 along a predetermined conveying path, and half the polarizing film sheet F on the conveying path A cutting device 22c for cutting, and a knife edge 22d for supplying the bonding sheet F5 to the bonding position while winding the polarizing film sheet F subjected to the half cut at an acute angle and peeling the bonding sheet F5 from the separator F3; Separator roll R which winds up separator F3 which became independent through knife edge 22d Having a winding portion 22e for holding.

  The roll holding unit 22a located at the carry-in end of the transport device 22 and the winding unit 22e located at the carry-out end of the transport device 22 are driven in synchronization with each other. Thereby, the winding part 22e winds up the separator F3 which passed through the knife edge 22d, while the roll holding | maintenance part 22a pays out the polarizing film sheet F to the conveyance direction. Hereinafter, the upstream side in the transport direction of the polarizing film sheet F (separator F3) in the transport device 22 is referred to as the upstream side of the sheet transport, and the downstream side in the transport direction is referred to as the downstream side of the sheet transport.

  Each guide roller 22b changes the traveling direction of the polarizing film sheet F being conveyed along the conveying path, and at least a part of the plurality of guide rollers 22b is movable so as to adjust the tension of the polarizing film sheet F being conveyed. To do.

The cutting device 22c is a half cut that cuts a part in the thickness direction of the polarizing film sheet F over the entire width in the width direction orthogonal to the longitudinal direction of the polarizing film sheet F when the polarizing film sheet F is fed out a predetermined length. I do.
Half-cutting adjusts the advancing / retreating position of the cutting blade so that the polarizing film sheet F (separator F3) is not broken by the tension acting during conveyance of the polarizing film sheet F, and the separator F3 remains with a predetermined thickness. Cut into the vicinity of the boundary surface between F2 and separator F3.

  The polarizing film sheet F after the half cut is formed with a cut line in which the polarizing film F1 and the surface protective film F4 are cut in the thickness direction over the entire width in the width direction of the polarizing film sheet F. Cut lines are formed at predetermined intervals in the longitudinal direction of the strip-shaped polarizing film sheet F, and the polarizing film sheet F is divided into a plurality of sections in the longitudinal direction by the plurality of cutting lines. Each division part pinched | interposed into a pair of cutting line adjacent in the longitudinal direction of the polarizing film sheet F turns into the bonding sheet | seat F5 which is one sheet piece.

The knife edge 22d is disposed below the upstream conveyor 6 and extends in the width direction of the polarizing film sheet F at least over its entire width. The knife edge 22d is wound so that the separator F3 side of the polarizing film sheet F after half-cutting is in sliding contact.
The polarizing film sheet F peels off the bonding sheet F5 partitioned as a sheet piece from the separator F3 when the traveling direction is changed so as to be bent at an acute angle at the tip of the knife edge 22d. The front end portion of the knife edge 22d is disposed close to the pinching roll 23, and the bonding sheet F5 peeled from the separator F3 by the knife edge 22d overlaps the lower surface of the liquid crystal panel P in the state of being adsorbed by the first adsorption device 11. While being introduced between the pair of laminating rollers 23a, 23a of the pinching roll 23.

  The pinching roll 23 has a pair of bonding rollers 23a and 23a arranged in parallel with each other in the axial direction (the upper bonding roller 23a moves up and down), and between the pair of bonding rollers 23a and 23a. A predetermined gap is formed, and the position of this gap becomes the bonding position of the first bonding apparatus 13. The liquid crystal panel P and the bonding sheet F5 are overlapped and introduced into the gap between the pair of bonding rollers 23a and 23a, and the upstream conveyor while the liquid crystal panel P and the bonding sheet F5 are sandwiched between the bonding rollers 23a. 6 is sent to the downstream side of the panel conveyance. Thereby, the bonding sheet | seat F5 is integrally bonded by the lower surface of liquid crystal panel P, and it becomes the single-sided bonding panel P11.

  The 1st shift | offset | difference test | inspection apparatus 14 test | inspects whether the position of the bonding sheet | seat F5 with respect to liquid crystal panel P is appropriate in the single-sided bonding panel P11 (whether a position shift exists in a tolerance range). The first misalignment inspection device 14 includes a pair of cameras 14a that photograph the edge of the bonding sheet F5 on the upstream side and the downstream side of the single-sided bonding panel P11, for example. The imaging data by each camera 14a is transmitted to the control device, and based on this imaging data, it is determined whether or not the relative positions of the bonding sheet F5 and the liquid crystal panel P are appropriate. The single-sided bonding panel P11 determined to have an inappropriate relative position is discharged out of the line by a payout means (not shown).

As shown in FIG. 2, the first reversing device 15 includes, for example, a rotating shaft 15a inclined at 45 ° in a plan view with respect to the transport direction of the liquid crystal panel P, and an upstream conveyor via the rotating shaft 15a. 6 and a reverse arm 15b supported between the carry-in end of the downstream conveyor 7 and the carry-in end of the downstream conveyor 7. The reversing arm 15b is held by adsorbing or sandwiching the single-sided bonding panel P11 that has reached the carry-out end of the upstream conveyor 6 via the first misalignment inspection device 14, and the reversing arm 15b is rotated 180 around the rotation shaft 15a. By rotating, the front and back of the single-sided bonding panel P11 are reversed, and the single-sided bonding panel P11 that has been conveyed in the direction along the short side of the display region P4 is conveyed in the direction along the long side of the display region P4. Rotate as you do.
The single-sided bonding panel P11 is turned by the first reversing device 15 so that the polarizing axes of the polarizing films F1 bonded to the front and back surfaces of the liquid crystal panel P are perpendicular to each other.

  Therefore, the upstream conveyor 6 and the downstream conveyor 7 both have the direction from the right side to the left side in the drawing as the transport direction of the liquid crystal panel P, but the upstream conveyor 6 and the downstream conveyor 7 pass through the first reversing device 15. The side conveyor 7 is offset by a predetermined amount in the width direction in plan view. In addition, what is necessary is just to use the reversing apparatus which has a reversing arm which has a rotating shaft parallel to a conveyance direction, for example, when only reversing the front and back of a bonding target object.

  Here, the reversing arm 15 b includes an alignment camera 15 c similar to the alignment camera 11 b of the first suction device 11, and has an alignment function similar to that of the panel holding unit 11 a of the first suction device 11.

  The second dust collecting device 16 is arranged on the upstream side in the transport direction of the liquid crystal panel P of the pinching roll 23 which is the bonding position of the second bonding device 17 and is single-sided before being introduced into the pinching roll 23. In order to remove dust around the panel P11, particularly dust on the lower surface side, static electricity is removed and dust is collected.

Since the 2nd adsorption | suction apparatus 20 is equipped with the structure similar to the 1st adsorption | suction apparatus 11, it attaches | subjects and demonstrates the same code | symbol to the same part. The 2nd adsorption | suction apparatus 20 hold | maintains the single-sided bonding panel P11 contact | abutted with the stopper S of the downstream by a drive conveyor so that a movement to an up-down direction and a horizontal direction is possible, and the panel holding part 11a which aligns the single-sided bonding panel P11, And an alignment camera 11b for performing alignment of the single-sided bonded panel P11 while being held by the panel holding portion 11a, and a rail R.
The panel holding part 11a sucks and holds the single-sided bonding panel P11 that has passed through the second dust collector 16 and is in contact with the stopper S by vacuum suction with the suction pad 26 of the suction table 25, and moves on the rail R in that state. And the single-sided bonding panel P11 is conveyed, and when conveyance is complete | finished, the adsorption | suction state of the single-sided bonding panel P11 will be cancelled | released, and the single-sided bonding panel P11 will be delivered to the free roller conveyor 24.

  In the alignment camera 11b, the panel holding unit 11a holds the single-sided bonding panel P11 that is in contact with the stopper S, and images the alignment mark, the tip shape, and the like of the single-sided bonding panel P11 in the raised state. Imaging data from the alignment camera 11b is transmitted to the control device, and based on this imaging data, the panel holding unit 11a is operated to align the single-sided bonding panel P11 with respect to the free roller conveyor 24 at the transport destination. That is, the single-sided bonding panel P11 is in a state in which the amount of misalignment in the conveying direction with respect to the free roller conveyor 24, the direction orthogonal to the conveying direction, and the turning direction around the vertical axis of the single-sided bonding panel P11 is added. It is conveyed to.

  The 2nd bonding apparatus 17 bonds the bonding sheet | seat F5 cut into the predetermined size with respect to the lower surface of the single-sided bonding panel P11 introduced into the bonding position. Since the 2nd bonding apparatus 17 is equipped with the conveying apparatus 22 and the pinching roll 23 similar to the 1st bonding apparatus 13 except the object workpiece | work being the single-sided bonding panel P11, it is the same code | symbol to the same part. The description is omitted.

  The bonding sheet F5 conveyed by the single-sided bonding panel P11 and the conveying device 22 is sent out to the downstream side of the panel conveyance while being sandwiched between the bonding rollers 23a, and is bonded to the lower surface of the single-sided bonding panel P11. F5 is bonded together and becomes a double-sided bonding panel P12.

  The second misalignment inspection device 18 inspects whether or not the position of the bonding sheet F5 with respect to the single-sided bonding panel P11 is appropriate (whether the positional deviation is within the tolerance range) in the double-sided bonding panel P12. The 2nd shift | offset | difference inspection apparatus 18 has a pair of camera 18a which image | photographs the edge of the bonding sheet | seat F5 in the panel conveyance upstream and downstream of the double-sided bonding panel P12, for example. The imaging data by each camera 18a is transmitted to the control device, and it is determined based on this imaging data whether the relative positions of the bonding sheet F5 and the liquid crystal panel P are appropriate. The double-sided bonding panel P12 determined to have an inappropriate relative position is discharged out of the line by a not-shown dispensing means.

  Next, the first dust collector 12 and the second dust collector 16 will be described in detail. In addition, since the 2nd dust collector 16 is the structure similar to the 1st dust collector 12, in the following description, the 1st dust collector 12 is demonstrated as an example and the 2nd dust collector 16 is demonstrated. Is omitted.

  FIG. 5 shows the first dust collector 12 in a simplified manner. As shown in FIG. 5, the first dust collector 12 includes a dust collector main body 27 formed so as to cover a part (or all) of the transport direction of the liquid crystal panel P to be transported from above and below, A suction device 28 (see FIG. 6) that is connected to a buffer chamber 27a in the dust collector main body 27 and sucks and removes dust by sucking the internal atmosphere. The suction device 28 is connected to the lower part of the dust collector main body 27 and sucks air from the buffer chamber 27a.

The dust collector main body 27 is composed of an upper cover 30 whose lower part is opened and a lower cover 40 whose upper part is opened. The upper cover 30 is formed in a box shape with an upper wall 30u, both side walls 30s, 30s, a front wall 30f, and a rear wall 30r, and the lower cover 40 is formed with a lower wall 40l, both side walls 40s, 40s, a front wall 40f, and a rear wall 40r. And the upper cover 30 and the lower cover 40 are arranged in a state where the opened portions face each other and a slit-like gap cl of the liquid crystal panel P is secured between them.
Both the upper cover 30 and the lower cover 40 are supported by a frame (not shown) of the roller conveyor 5. Here, at least one of the upper cover 30 and the lower cover 40 may be close to and away from the other to adjust the gap cl.

  A gap cl between the upper and lower edges of both side walls 30s, 40s of the upper cover 30 and the lower cover 40 is covered with blocking plates 31, 31 fixed to the both side walls 30s, 40s. The gap cl between the upper and lower edges of the front walls 30f, 40f of the upper cover 30 and the lower cover 40 and the gap cl between the upper and lower edges of the rear walls 30r, 40r are both at the center in the width direction of the liquid crystal panel P. Both sides are closed by closing pieces 32, 32 fixed to the upper and lower edges.

6 is a cross-sectional view taken along line BB in FIG. As shown in FIG. 6, a plurality of suction ports 33 are arranged on the lower wall 40 l of the lower cover 40. A plurality of the suction ports 33 are provided in a row along the width direction of the roller conveyor 5. Each suction port 33 is connected to the suction port of the blower 29 by a vacuum pipe 34, and the buffer chamber 27 a is connected to the blower 29 in communication. The number of arrangement rows of the suction ports 33 may be plural.
The blower 29, the vacuum pipe 34, and the suction port 33 of the lower cover 40 constitute a suction device 28.

  FIG. 7 is a view taken in the direction of arrow C in FIG. As shown in FIG. 7, drive rollers 35 are respectively provided on the upstream side and the downstream side in the transport direction of the roller conveyor 5 in the vicinity of the coordinate position of the dust collector main body 27. The driving roller 35 transports the liquid crystal panel P in the buffer chamber 27a of the dust collector main body 27. Free rollers 36, 36, 36 are provided between the two drive rollers 35, 35.

Here, a neutralization bar 37 is provided in the vicinity of the drive roller 35 on the upstream side in the transport direction of the roller conveyor 5, that is, immediately before the liquid crystal panel P is carried into the buffer chamber 27a.
This static elimination bar 37 is a bar-shaped electrode having a length that covers the passing direction of the liquid crystal panel P in the width direction, and is connected to the power unit, and is conveyed in contact with the lower surface of the liquid crystal panel P constantly or intermittently. The static electricity (especially the lower surface) of the liquid crystal panel P is removed to prevent charging.
Prior to collecting the dust in the buffer chamber 27a of the dust collector main body 27, the charge removal is performed by the charge removal bar 37, and the reattachment of the dust on the liquid crystal panel P due to static electricity can be prevented, thereby improving the dust collecting ability.

  Moreover, it is the buffer chamber 27a of the dust collector main body 27, Comprising: You may arrange | position the static elimination brush 38 along the width direction in the center part of a conveyance direction. By making this static elimination brush 38 contact the lower surface of the liquid crystal panel P, adhesive dust can be contacted and removed.

  According to this embodiment, the liquid crystal panel P conveyed to the roller conveyor 5 is bonded to the single-sided bonding panel P11 by the bonding sheet F5 by the first bonding apparatus 13, and then the second bonding apparatus. The bonding sheet | seat F5 is bonded by 17 and it becomes the double-sided bonding panel P12.

  Here, the 1st dust collector 12 arrange | positioned as a dust collection process in front of the pinching roll 23 of the 1st bonding apparatus 13 by which the liquid crystal panel P conveyed by the roller conveyor 5 is arrange | positioned as a bonding process. During the passage, the dust in the portion corresponding to the dust collector main body 27 of the liquid crystal panel P (the periphery of the liquid crystal panel P) is sequentially sucked and removed while being conveyed.

Moreover, the 1st surface bonding panel P11 conveyed by the roller conveyor 5 is the 2nd dust collector arrange | positioned as a dust collection process in front of the pinching roll 23 of the 2nd bonding apparatus 17 arrange | positioned as a bonding process. While passing through 16, the dust corresponding to the dust collector main body 27 of the single-sided bonding panel P11 (the periphery of the single-sided bonding panel P11) is sucked and removed sequentially.
That is, when the air is sucked by the blower 29, the buffer chambers 27a of the first dust collector 12 and the second dust collector 16 become negative pressure almost uniformly as a whole, so that dust floating in the buffer chamber 27a, Dust and the like adhering to the liquid crystal panel P and the single-sided bonding panel P11 are sequentially removed by suction.

  Therefore, after removing dust with the 1st dust collector 12 used as a dust collection process, the 2nd dust collector 16, in the pinching roll 23 used as a pasting process, liquid crystal panel P and pasting sheet F5, or Since the single-sided bonding panel P11 and the bonding sheet F5 can be bonded, the space for dust to adhere to the liquid crystal panel P and the single-sided bonding panel P11 is minimized, and contamination of foreign matters such as dust is surely prevented. Quality can be improved.

  In addition, since the dust collector main body 27 is surrounded by the upper cover 30 and the lower cover 40, and the buffer chamber 27a that is closed as much as possible is formed by the closing plate 31 and the closing piece 32, suction is performed. When the atmosphere of the buffer chamber 27a is sucked by the blower 29 of the device 28, the negative pressure region is almost uniformly above and below the liquid crystal panel P of the first dust collector 12 or the single-sided bonding panel P11 of the second dust collector 16. Can be formed.

  Thereby, without providing the buffer chamber 27a, the liquid crystal panel P or the single-sided bonding panel P11 to the roller conveyor 5 is simply sucked from the lower side of the liquid crystal panel P or the single-sided bonding panel P11. There is no sticking. Therefore, there is no adverse effect on the transportation of the liquid crystal panel P or the single-sided bonding panel P11, and the free roller 36 is disposed, so that smooth transportation can be performed.

  And since the static elimination bar 37 is arrange | positioned just before the 1st dust collector 12 and the 2nd dust collector 16, and static electricity of liquid crystal panel P or single-sided bonding panel P11 can be removed previously, it exists in the buffer chamber 27a. The dust that adheres can be prevented from reattaching to the lower surface, which is the bonding surface of the liquid crystal panel P or the single-sided bonding panel P11, by static electricity, and the dust can be reliably removed by suction by the suction device 28.

  Further, since the suction port 33 is provided in the lower wall 40l of the lower cover 40, the distance between the suction port 33 and the lower surface side of the liquid crystal panel P or single-sided bonding panel P11 that is a bonding surface to be bonded thereafter. Therefore, the dust on the panel surfaces of the liquid crystal panel P and the single-sided bonding panel P11 to be bonded can be quickly and reliably sucked and removed.

  Further, in the buffer chamber 27a of the dust collector main body 27, when the neutralizing brush 38 is arranged along the width direction at the center in the transport direction, the dust or the like that cannot be removed by the neutralizing bar 37 is further removed. The foreign matter can be removed by contact.

According to the experiment, the total width of the dust collector main body 27 is 910 mm, the length in the transport direction is 80 mm, the height is 60 mm, the width of the liquid crystal panel P being transported is 605 mm, the length is 1060 mm, the thickness is 1.4 mm, The opening length 655 mm of the transfer opening k of the dust collector main body 27 having a margin of 50 mm, the vertical width of the transfer opening k 5.4 mm, and from the liquid crystal panel P to the upper and lower edges of the transfer opening k When suction is performed at a suction air volume of 5 cubic meters of a blower 29 that is each 2 mm in length and dust collection capacity, and the wind speed at the transfer opening k on the input side of the liquid crystal panel P and the discharge side of the liquid crystal panel P is measured, The result was obtained.
In Table 1, Pos1 to Pos5 are wind velocity measurement sites. These Pos1 to Pos5 are set in the parts where the conveyance openings k are divided at equal intervals in FIG.

Therefore, it can be seen from the experimental results that air is sufficiently drawn from the transfer opening k on the input side and the discharge side, so that the atmosphere around the liquid crystal panel P in the buffer chamber 27a can be sufficiently sucked. confirmed.
In addition, this invention is not restricted to the said embodiment, For example, although the case where a polarizing film was bonded to a liquid crystal panel was demonstrated, as a member to which a film material is affixed, it is not restricted to a liquid crystal panel, An organic electroluminescent panel The film material to be bonded is not limited to a polarizing film, and can also be applied to an antireflection film, a light diffusion film, and the like.

5 Roller conveyor (conveyor)
P Liquid crystal panel (optical member)
P11 Single-sided panel (optical member)
22 Conveyor F5 Bonding sheet (film material)
23 sandwiching roll (bonding part)
12 First dust collector (dust collector)
16 Second dust collector (dust collector)
27a Buffer chamber 27 Dust collector body 37 Static elimination bar (static elimination device)
38 Static neutralization brush (static neutralization device)

Claims (5)

  A dust collection step of sucking and removing dust from the optical member to be transported is provided before the bonding step of bonding the optical member transported by the transport conveyor and the film material transported by the transport device. The film material bonding method. A transport conveyor on which optical members to be bonded are transported;
A transport device for transporting a film material to be bonded to the optical member;
A bonding unit that bonds the film material conveyed by the conveyance device to the surface of the optical member conveyed from the conveyance conveyor;
A film material laminating device, comprising: a dust collecting device that is disposed upstream of the laminating portion in the optical member conveying direction and sucks and removes dust from the optical member.   The dust collector includes a dust collector body that covers at least a part of the transport direction of the optical member to be transported from above and below to form a buffer chamber, and a suction device that is connected to the buffer chamber and sucks the internal atmosphere. The film material laminating device according to claim 2, wherein the film material laminating device is provided.   The said suction device is connected to the lower part of the said dust collector main body, The bonding apparatus of the film material of Claim 3 characterized by the above-mentioned.   5. The film material according to claim 2, wherein the dust collector includes a static eliminator that neutralizes the optical member conveyed in the dust collector main body. Bonding device.

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