CN109311616B

CN109311616B - Film member attaching device, film member attaching method, and guide member

Info

Publication number: CN109311616B
Application number: CN201780028251.2A
Authority: CN
Inventors: 河东和彦; 屋宜健勇
Original assignee: Beac Co Ltd
Current assignee: Beac Co Ltd
Priority date: 2016-12-23
Filing date: 2017-12-13
Publication date: 2020-09-22
Anticipated expiration: 2037-12-13
Also published as: CN109311616A; KR20180135936A; WO2018116935A1

Abstract

The film member sticking apparatus (1) of the present invention comprises: a table (20) on which the member (10) to be bonded is placed; and a film member supply mechanism portion (100) that supplies a leading end portion (30a) of the film member (30) to a sticking start end (10a) of the member (10) to be stuck, wherein the film member supply mechanism portion (100) has: a peeling roller (110) for peeling the release film (40); a release film advancing mechanism (120) for advancing the release film (40) folded back by the peeling roller (110); a guide member (130) having a leading end portion as an edge, a guide surface (131) for guiding the film member (30) from which the release film (40) has been peeled, and a non-adhesive surface finish applied to the guide surface (131); and a pressing roller (140) for pressing the front end (30a) of the film member (30) against the bonding start end (10a), so that the front end of the film member in the advancing direction can accurately reach the bonding start end of the member to be bonded while the film member is reliably advanced and the release film is peeled.

Description

Film member attaching device, film member attaching method, and guide member

Technical Field

The invention relates to a film member attaching apparatus, a film member attaching method, and a guide member.

Background

Conventionally, various film member sticking apparatuses have been proposed, in which a release film is peeled from a film member to which the release film is stuck, and then the film member from which the release film is peeled is stuck to a member to be stuck (see, for example, patent document 1).

Fig. 6 is a schematic view of a main part of the film member sticking apparatus described in patent document 1. In addition, the "plastic film laminating apparatus" in patent document 1 will be described as a "film member bonding apparatus" in the present specification.

As shown in fig. 6, the film member sticking apparatus described in patent document 1 includes: and a peeling unit 830 for peeling the release film 810 from the film member 820 to which the release film 810 is attached. The peeling unit 830 is provided with a peeling section 840, and a folded section 841 having an acute angle is formed at the tip of the peeling section 840. The release film 810 is changed in traveling direction by a roller 850 after being folded back at the peeling section 840 and travels in the arrow x' direction.

When the release film 810 is peeled from the thin film member 820, the peeling unit 830 slides in the direction of arrow x while the thin film member 820 is sucked by a suction device (not shown) on the upper end face of the peeling unit 830. In this way, the release film 810 can be peeled off from the thin film member 820.

On the other hand, the film member 820 sucked by the suction device is transferred back to a predetermined sticking position of a member to be stuck (not shown) and stuck at the sticking position.

[ Prior Art document ]

[ patent document 1 ] Japanese patent application laid-open No. 2011-251805

In the film member sticking device described in patent document 1, the film member 820 from which the release film 810 has been peeled can be stuck to a member to be stuck after the release film 810 is peeled from the film member 820 to which the releasable release film 810 has been stuck, but there remains a problem that a peeling portion 840 for peeling the release film 810 from the film member 820 should be improved.

That is, the folded portion 841 on the peeling section 840 used in the film member bonding apparatus described in patent document 1 is formed at an acute angle, and the release film 810 is folded back at the acute-angled folded portion 841. Therefore, depending on the material of the release film 810, the release film 810 may be damaged or stuck due to friction, and the release film may be damaged. In addition, when the film member sticking apparatus is used for a long period of time, the folded portion 841 is worn due to friction with the release film.

If the release film 810 is damaged or the folded portion 841 is worn, the running operation of the film member and the peeling operation of the release film are adversely affected.

The same problem is also present in other film member bonding apparatuses having a peeling section 840 similar to that used in the film member bonding apparatus described in patent document 1.

Fig. 7 is an explanatory view for explaining an example of another conventional film member sticking apparatus. Hereinafter, the film member joining apparatus described in patent document 1 is referred to as a "conventional first film member joining apparatus", and the film member joining apparatus shown in fig. 7 is referred to as a "conventional second film member joining apparatus". Fig. 7 shows a simplified peeling unit used in the conventional second film member sticking apparatus.

As shown in fig. 7, the conventional second film member bonding apparatus also includes a peeling unit 930 for peeling off the release film 910 from the film member 920 to which the release film 910 is bonded. The fold back portion 931 of the release sheet 930 is formed into an acute angle shape, and after the release film 910 is folded back at the fold back portion 931, the release film 910 is moved in the direction of the arrow x, whereby the release film 910 is peeled from the film member 920 to which the release film 910 is attached.

However, in the conventional second film member bonding apparatus, when the release film 910 is peeled, the film member 920 is slightly advanced while the release film 910 is peeled, and after the forward end portion 920a (also simply referred to as the forward end portion 920a) of the film member 920 in the advancing direction reaches the bonding start end 940a of the member 940 to be bonded, the forward end portion 920a of the film member 920 is pressed by a pressing roller 950 or the like, and the release film folded back at the folding back portion 931 is pulled in the arrow x direction while the table 960 is moved in the arrow x' direction along the guide rail 970. By this, the film member 920 is stuck to the stuck member 940.

In the conventional second film member bonding apparatus, since the release film 910 is folded back by the folded-back portion 931 having an acute angle, the release film 910 is damaged, and the folded-back portion 931 is worn by friction with the release film due to the long-term use of the film member bonding apparatus, which is similar to the conventional first film member bonding apparatus shown in fig. 6, and finally, the running operation of the film member and the peeling operation of the release film are adversely affected.

In order to eliminate these problems, it is conceivable to provide the turn-back portion 931 not at an acute angle but as shown in a broken line frame B in fig. 7, to provide the turn-back portion 931 with a turn-back portion 931a having a circular arc shape. However, in the conventional second film member bonding apparatus, the positional relationship between the folded-back portion and the bonding start end 940a of the member 940 to be bonded is also an extremely important factor.

This is because, in the conventional second film member bonding apparatus, when the front end portion 920a of the film member 920 from which the release film 910 is peeled by the folding back portion 931 reaches the member to be bonded, the accuracy of the reaching position is highly required.

That is, the conventional second film member bonding apparatus performs the following operations: the film member 920 after the release film 910 is peeled off by the fold back portion 931 of the peeling portion 930 travels along the extension line of the inclined surface 932 of the peeling portion 930, and after the leading end portion 920a of the film member 920 reaches the application start end 940a of the member 940 to be applied, the release film folded back at the fold back portion 931 is pulled in the arrow x direction while moving the table 960 along the guide rail 970 in the arrow x' direction in a state where the leading end portion 920a of the film member 920 is pressed by the pressing roller 950 or the like.

Therefore, when the front end portion 920a of the film member 920 reaches the member 940, if the accuracy of the reaching position is low, the film member 920 cannot be accurately stuck to the member 940 at the correct position. Specifically, for example, as shown by a broken line frame B in fig. 7, when the film member 920 from which the release film is peeled off by the fold-back portion 931a travels on an extension of the inclined surface 932 of the peeling portion 930 after the fold-back portion 931 is once provided as the fold-back portion 931a having a circular arc, the distance from the tip end portion 920a of the film member 920 to the application start end 940a of the member 940 to be applied becomes long, and the film member may be bent by its own weight during the time when the film member reaches the application start end 940 a. Therefore, the leading end portion 920a of the film member 920 cannot accurately reach the attachment starting end 940a of the member 940, and the film member 920 cannot be accurately attached to the member 940.

The above-described problem that the leading end portion 920a of the film member 920 does not reach the attachment starting end 940a of the member 940 with high accuracy and the film member 920 cannot be attached to the member 940 accurately occurs not only when the folding-back portion 931 is provided as the folding-back portion 931a having an arc but also when the folding-back portion 931 is provided as a roller (not shown), for example. That is, even if the folding-back portion 931 is provided as a roller, similarly to the case where the folding-back portion 931 is provided as the circular-arc folding-back portion 931a, when the film member 920 after peeling the release film 910 travels on the extension line of the inclined surface 932 of the peeling portion 930, the distance to reach the sticking start end 940a of the member 940 becomes long, and therefore, the leading end portion 920a of the film member 920 cannot reach the sticking start end 940a of the member 940 with high accuracy.

In view of the above problems, it is an object of the present invention to provide a film member sticking apparatus which sticks a film member with a release film peeled off from a film member on a film sticking surface with a sticking start end as a starting point after a forward end of the film member reaches the sticking start end of the stuck member, and which can prevent a release film from being damaged or a folded portion from being worn, thereby surely performing a film member advancing operation and a release film peeling operation, and also can accurately reach the sticking start end of the stuck member with the forward end of the film member with the release film peeled off.

Disclosure of Invention

【1】 A film member sticking apparatus according to the present invention is a film member sticking apparatus for moving a film member, from which a releasable release film is stuck to a sticking surface having the sticking surface, while peeling the release film, and sticking the film member to a member to be stuck with the sticking start end as a starting point after the leading end portion in the moving direction of the film member from which the release film is peeled reaches the sticking start end of the member to be stuck, the film member sticking apparatus including: a table for placing the member to be adhered; and a film member supply mechanism portion that advances the film member while peeling the release film from the film member and supplies the film member so that a leading end portion in a proceeding direction of the film member reaches a pasting start end of the member to be pasted, wherein the film member supply mechanism portion includes: a peeling roller that peels the release film from the film member by turning back the release film in a direction almost opposite to a traveling direction of the film member; a release film advancing mechanism section that advances the release film that has been folded back by the peeling roller; a guide member having a guide surface for guiding the movement of the film member after the release film is peeled off by the peeling roller when the film member moves toward the sticking start end of the member to be stuck, and having a non-adhesive surface treatment applied to the guide surface for preventing the adhesive from adhering; and a pressing roller that presses a advancing-direction leading end portion of the film member at a sticking start end of the member to be stuck when the film member advances along the guide surface of the guide member and the advancing-direction leading end portion of the film member reaches the sticking start end, the guide member being provided to: the guide surface is formed at an acute angle with respect to the member to be stuck with the tip end portion of the guide member as an edge, and the sticking start end of the member to be stuck is positioned on an extension line of the guide surface.

According to the present invention, the folding-back portion for peeling the release film from the film member is provided as a roller (peeling roller), and the release film is folded back by the peeling roller and then travels, thereby peeling the release film from the film member. Thus, the folding-back part (peeling roller) can be prevented from being worn while the release film is prevented from being damaged, and the running operation of the film member and the peeling operation of the release film can be reliably performed.

Further, since the guide member for guiding the film member to travel is provided on the front side of the peeling roller and the non-adhesive surface treatment for preventing the adhesive agent from adhering to the guide surface of the guide member is applied to the guide surface of the guide member, the adhesive surface of the film member can be prevented from adhering to the guide surface of the guide member, and the film member can smoothly travel on the guide surface of the guide member.

In addition, the guide member is provided with: the guide surface is formed at an acute angle with respect to the member to be stuck with the tip end of the guide member as an edge, and the sticking start end of the member to be stuck is positioned on the extension line of the guide surface.

In this way, since the leading end portion of the guide member is an edge, the distance between the leading end portion of the guide member and the attachment start end of the member to be attached can be shortened as much as possible, and the difference in height between the leading end portion of the guide member and the attachment start end of the member to be attached can be reduced as much as possible. In this way, by providing the folded-back portion with, for example, an arc-shaped folded-back portion (see the broken-line circle B in fig. 7), the distance from the leading end portion in the advancing direction of the film member to the joining start end of the member to be joined can be shortened, and the film member can be prevented from being bent by its own weight before reaching the joining start end. In this way, the leading end portion in the advancing direction of the film member advancing on the guide surface can accurately reach the application start end of the member to be applied. Further, since the guide member is provided so that the application start end of the applied member is positioned on the extension line of the guide surface, the front end portion in the advancing direction of the film member advancing on the guide surface can be accurately brought to the application start end of the applied member by such an arrangement.

The "edge of the leading end portion of the guide member" means, for example, that the leading end portion may be formed into a thin plate shape in addition to an acute angle.

【2】 In the film member adhering device of the present invention, it is desirable that: the pressing roller is a structure in which a plurality of pressing rollers are stacked in multiple stages, and respective rotation shafts of the plurality of pressing rollers are arranged in a direction of a leading end portion in a traveling direction of the film member.

By configuring the pressing roller as described above, the front end portion of the film member in the advancing direction can be reliably pressed. In particular, when the width direction of the film member (the length in the direction along the rotation axis of the pressing roller) is long, the front end portion of the film member in the advancing direction can be pressed with a uniform pressing force over the entire width direction, and the front end portion of the film member in the advancing direction can be reliably pressed.

【3】 In the film member adhering device of the present invention, it is desirable that: the diameter of the pressing roller on the side in contact with the film member among the plurality of pressing rollers is set smaller than the diameters of the other pressing rollers.

By setting the diameter of the pressing roller on the side in contact with the film member to be smaller than the diameters of the other pressing rollers, even when the distance between the leading end portion of the guide member and the attachment start end of the member to be attached is narrow, the leading end portion of the guide member in the traveling direction can be reliably pressed while avoiding contact with the guide member, by utilizing the feature that the diameter of the pressing roller is small. In addition, since the smaller-diameter pressing roller can be prevented from being warped, the advancing-direction leading end portion of the film member can be pressed with a uniform pressing force over the entire width direction.

【4】 In the film member adhering device of the present invention, it is desirable that: the release film advancing mechanism section has a dancer roll (Dancerroll) provided on the downstream side in the advancing direction of the release film after being folded back by the peeling roll, and the release film is applied with tension from the dancer roll.

By providing the tension adjusting roller in the release film advancing mechanism, when the sticking work for sticking the film member to the member to be stuck is performed, the respective works can be independently performed without synchronizing the moving work of the table or the film member supplying mechanism with the release film winding work performed by the winding roller.

【5】 In the film member adhering device of the present invention, it is desirable that: a feeding mechanism portion is disposed between the peeling roller and the dancer roller, and the feeding mechanism portion is capable of moving the release film by a predetermined movement amount in a moving direction of the release film so that a leading end portion in the moving direction of the film member reaches the bonding start end of the member to be bonded.

By providing such a feeding mechanism, the leading end portion in the advancing direction of the film member from which the release film has been peeled can reach the joining start end of the member to be joined.

【6】 In the film member adhering device of the present invention, it is desirable that: the film member supply mechanism further includes a control device for controlling the table and the film member supply mechanism, the film member supply mechanism further includes a camera capable of taking an image of a predetermined portion of the film member, and the control device has a control function of: the position of the predetermined portion of the film member is monitored based on the image data of the camera, and a feed mechanism is controlled so that the forward end of the film member in the advancing direction reaches the pasting start end of the member to be pasted.

Thus, the leading end portion in the advancing direction of the film member can accurately reach the application start end of the member to be applied.

【7】 In the film member adhering device of the present invention, it is desirable that: the predetermined portion of the film member is a rear end portion of the film member in the traveling direction.

By providing the camera so as to be able to photograph the rear end portion in the traveling direction of the film member (in the present stage, the film member to be pasted), a space necessary for providing the camera can be sufficiently secured. The reason for this configuration is that: if the front end in the traveling direction of the film member to be attached is photographed at the present stage, it is difficult to secure a space necessary for installing a camera because a member such as a pressing roller exists in the vicinity of the front end in the traveling direction of the film member.

【8】 In the film member adhering device of the present invention, it is desirable that: the peeling roller is a roller having a bearing.

In this way, when the peeling roller is a roller having a bearing, the rotation of the roller becomes smooth, and when the release film is peeled from the film member, the release film can be smoothly peeled with a small force, and the release film can be more smoothly advanced after being folded back.

【9】 In the film member adhering device of the present invention, it is desirable that: the guide member is composed of metal, and the guide member is electrically grounded.

In this way, even if static electricity is applied to the film member supplied from the film member supply mechanism, the static electricity can be removed. By removing the static electricity from the film member, it is possible to not only make it difficult for dust or dirt to adhere to the film member, but also to attach the film member to the member to be attached with high accuracy when attaching the film member to the member to be attached. In addition, the film member can be prevented from being conveyed to the next step in a state where static electricity is charged.

【10】 In the film member adhering device of the present invention, it is desirable that: the film member is in the form of a long sheet and provided with cuts provided along the longitudinal direction of the long sheet-like film member at predetermined intervals while the release film is left, and the film member is peeled by the peeling roller via the release film to be formed into small pieces, and the small pieces of the film member are adhered to the member to be adhered.

By adopting such a configuration, the film member can be continuously attached to each member to be attached.

【11】 In the film member adhering device of the present invention, it is desirable that: the film member is a polarizing film for a liquid crystal panel, and the member to be adhered is a glass substrate for the liquid crystal panel.

In this way, the film member is a polarizing film for a liquid crystal panel, and the member to be adhered is a glass substrate for the liquid crystal panel. In this way, the polarizing film can be bonded to the glass substrate with high accuracy, which contributes to the production of a high-quality liquid crystal panel.

Drawings

Fig. 1 is a diagram for explaining a film member sticking apparatus 1 according to the first embodiment.

Fig. 2 is a view for explaining the polarizing film 30.

Fig. 3 is a diagram for explaining the guide member 130 and the pressing roller 140.

Fig. 4 is a diagram for explaining the attaching operation of the polarizing film 30 in the film member attaching apparatus 1 according to the embodiment.

Fig. 5 is an explanatory diagram for explaining a state in which the guide member 130 is plate-shaped.

Fig. 6 is a drawing extracted from a main part of the film member sticking apparatus described in patent document 1.

Fig. 7 is an explanatory view for explaining an example of a conventional film member sticking apparatus.

Detailed Description

Hereinafter, embodiments of the present invention will be described. The film member bonding device according to the embodiment is: a film member sticking apparatus is provided for sticking a film member to a member to be stuck with a peelable release film from the film member to which the peelable release film is stuck, by advancing the film member while peeling the release film from the film member, and after the forward end portion of the film member from which the release film is peeled in the advancing direction reaches the sticking start end of the member to be stuck, with the sticking start end as a starting point. The film member of the present invention is attached to the film member-attaching surface of the member to be attached from the attachment start end of the film member-attaching surface, but the "film member-attaching surface" is omitted in the present specification, and therefore, in the present specification, for example, the expression "is attached to the attachment start end of the member to be attached" or the expression "is attached to the member to be attached".

In the film member bonding apparatus 1 according to the first embodiment, the film member is a polarizing film used for a liquid crystal panel, and the member to be bonded is a glass substrate used for the liquid crystal panel. The size of the film member (polarizing film) is not particularly limited, and in the film member sticking apparatus 1 according to the first embodiment, the size of the member to be stuck (glass substrate) is set to, for example: the longer side (vertical) is 1500mm × the shorter side (horizontal) is 900mm, and after leaving margins of about 5mm from the lateral side and the vertical side of the member to be bonded, the remaining region is a region where bonding can be performed (for example, the longer side (vertical) 1490mm × the shorter side (horizontal) 890 mm).

In addition, although the liquid crystal panel is generally configured such that polarizing films having polarization directions perpendicular to each other are bonded to two glass substrates (a front glass substrate and a back glass substrate) disposed on the front side and the back side of the liquid crystal layer, the film member bonding device 1 according to the first embodiment will be described with respect to bonding a polarizing film to one of the front glass substrate and the back glass substrate. Next, the film member sticking apparatus 1 according to the embodiment will be described in detail.

Fig. 1 is a diagram for explaining a film member sticking apparatus 1 according to the first embodiment. The film member sticking apparatus 1 according to the first embodiment shown in fig. 1 is a schematic view, and therefore does not necessarily reflect an actual size. As shown in fig. 1, a film member sticking apparatus 1 according to an embodiment includes: a stage 20 on which the glass substrate 10 as a member to be bonded is placed; a film member supply mechanism section 100 for feeding a polarizing film 30 (see fig. 2) as a film member while peeling a release film 40 from the polarizing film 30, and supplying the polarizing film 30 so that a proceeding direction front end portion 30a of the polarizing film 30 reaches a bonding start end 10a of the glass substrate 10; and a control device 200 having a control function of controlling each component of the film member sticking apparatus 1 according to the first embodiment. The control function of the control device 200 will be described later.

In the film member bonding apparatus 1 according to the first embodiment, the operation of bonding the polarizing film 30 to the glass substrate 10 by fixing the film member supply mechanism 100 and moving the table 20 (moving along the x-axis) will be described. Fig. 1 shows a state in which the table 20 has been moved to a position where an operation of attaching the polarizing film 30 to the glass substrate 10 is performed.

The film member supply mechanism 100 includes: a peeling roller 110 for peeling the release film 40 from the polarizing film 30 by folding back the release film 40 in a direction almost opposite to the traveling direction of the polarizing film 30; a release film advancing mechanism 120 for advancing the release film 40 folded back by the peeling roller 110; a guide member 130 having a guide surface 131, the guide surface 131 guiding the progress of the polarizing film 30 from which the release film 40 is peeled by the peeling roller 110; a pressing roller 140 for pressing the front end portion 30a of the polarizing film 30 against the attachment start end 10a when the front end portion 30a of the polarizing film 30 in the traveling direction (hereinafter, simply referred to as the front end portion 30a) reaches the attachment start end 10a of the glass substrate 10; and a camera 150 capable of photographing a predetermined portion (described later) of the polarizing film 30.

The peeling roller 110 is a roller having a bearing. Thus, when the release film 40 is peeled from the polarizing film 30, the release film 40 can be smoothly peeled with a small force.

The film member supply mechanism 100 includes

rollers

161 and 162 for bending and advancing the polarizing film 30 (the polarizing film 30 with the release film 40 attached thereto), in addition to the above-described components. Further, although there are a conveying mechanism section for conveying the polarizing film 30, a dancer roller disposed in the middle of the travel path, and the like, these components are not illustrated.

In fig. 1, the polarizing film 30 (the polarizing film 30 with the release film 40 attached thereto) is bent at a large angle downward by a roller 161, and then bent at a predetermined angle (30 degrees in the film member attaching apparatus 1 according to the embodiment) from the xy plane by a roller 162 to reach the peeling roller 110. The polarizing film 30 (the polarizing film 30 with the release film 40 attached thereto) is bent downward or obliquely by the

rollers

161 and 162 on the traveling path, but the polarizing film 30 as a whole proceeds in the right-left direction (the direction of the arrow x') as shown in the figure along the x-axis. Therefore, in the present specification, when describing the traveling direction of the polarizing film 30, description is made using "the arrow x' direction along the x-axis" or "the right-left direction of the drawing".

Fig. 2 is a view for explaining the polarizing film 30. As shown in fig. 2, the polarizing film 30 is in the form of a long sheet, and a release film 40 in the form of a long sheet is attached to the polarizing film body 32 via an adhesive layer 34 in a releasable state. The polarizing film 30 is provided with cuts at regular intervals while the release film 40 is left, and the polarizing film 30 can be cut into small pieces by the cuts so as to correspond to the size of each glass substrate 10 (see fig. 1) to be attached. For example, when the long side (length of 1500mm) of the glass substrate 10 is placed on the stage 20 in a manner of being along the x-axis, the slits C1, C2, … … are provided every long side (length of 1490mm) of the polarizing film 30 while the release film 40 is left.

In the case of explaining the respective polarizing films corresponding to the respective glass substrates 10 in the long sheet-shaped polarizing films 30 shown in fig. 2, the first polarizing film 30, the second polarizing film 30, and the … … will be explained in this order from the left side in fig. 2. The cutouts C1, C2, and … … may indicate the traveling direction rear end portion (hereinafter simply referred to as rear end portion) or the front end portion of each polarizing film 30. For example, the cut C1 represents the rear end portion 30b of the first polarizing film 30 in the case of the first polarizing film 30, and the cut C1 represents the front end portion 30a of the second polarizing film 30 in the case of the second polarizing film 30.

Next, referring back to fig. 1, the respective components of the film member sticking apparatus 1 according to the embodiment will be described in further detail.

The table 20 is capable of reciprocating in the direction of arrow x-x' along the x-axis on rails 60 laid on the platform 50. The table 20 is capable of performing position adjustment along the y-axis and angle adjustment on the xy-plane in addition to reciprocating movement along the x-axis. The reciprocating movement of the table 20 along the x axis, the positional adjustment along the y axis, and the angular adjustment on the xy plane can be controlled by one control function provided in the control device 200. In the film member sticking apparatus 1 according to the embodiment, the table 20, the stage 50, and the guide rail 60 are made of metal such as iron, for example.

The release film advancing mechanism 120 has a function of advancing the release film 40 folded back by the peeling roller 110 in the arrow x direction. The traveling direction of the release film 40 (arrow x direction) folded back by the peeling roller 110 is referred to as "release film traveling direction".

The release film advancing mechanism 120 includes: a dancer roll 125 provided on the downstream side of the release film 40 in the traveling direction after being folded back by the peeling roll 110; a plurality of rollers (e.g., rollers 121-124); a feeding mechanism section 126 provided between the peeling roller 110 and the dancer roller 125 (specifically, between the roller 122 and the roller 123); and a winding roller (not shown) disposed on a downstream side of the dancer roll 125 and configured to wind the release film 40.

The feeding mechanism portion 126 has a plurality of grippers (clampers) 127 for gripping the release film 40, and is reciprocally movable in the arrow x-x' direction along the x-axis. The feeding mechanism 126 has a function of bringing the front end 30a of the polarizing film 30 from which the release film 40 is peeled to the bonding start end 10a of the glass substrate 10.

This operation of the feeding mechanism portion 126 is performed by a control function provided in the control device 200. In this case, the control device 200 monitors the position (position along the x-axis) of a predetermined portion (for example, the rear end portion 30b) of the polarizing film 30 based on the image data of the camera 150, and controls the feeding mechanism portion 126 so that the front end portion 30a of the polarizing film 30 reaches the attachment start end 10a of the glass substrate 10.

As an example of controlling the feeding mechanism section 126 by the control device 200, for example, the control device 200 monitors the position of the rear end portion 30b (the slit C1 between the first polarizing film 30 and the second polarizing film 30) of the polarizing film (the first polarizing film 30) to be attached at this time based on the image data from the camera 150, and operates the feeding mechanism section 126 until the position of the rear end portion 30b (the slit C1) reaches the target position.

Specifically, the position of the rear end portion 30b of the polarizing film 30 when the front end portion 30a of the polarizing film 30 accurately reaches the attachment start end 10a of the glass substrate 10 is set as a "target position", and the control device 200 advances the release film 40 in the release film advancing direction until the position of the rear end portion 30b of the polarizing film to be attached reaches the target position. In this way, the front end portion 30a of the first polarizing film 30 can accurately reach the attachment start end 10a of the glass substrate 10.

When the rear end portion 30b (the slit C1) of the polarizing film 30 reaches the target position, the holding of the release film 40 is released, and the feeding mechanism 126 is controlled to return to the original position.

In the film member bonding apparatus 1 according to the first embodiment, the camera 150 monitors the position of the rear end portion 30b (the cut C1) of the first polarizing film 30 to be bonded, and this arrangement is because if the front end portion 30a of the first polarizing film 30 to be bonded at the present stage is monitored, a member such as the pressing roller 140 (see fig. 1) is present, and it is difficult to secure a space necessary for installing the camera 150. However, if a sufficient space for installing the camera 150 is reserved, the front end portion 30a of the first polarizing film 30 to be attached at the present stage may be monitored.

Next, the guide member 130 and the pressing roller 140 will be described with reference to fig. 3.

Fig. 3 is a diagram for explaining the guide member 130 and the pressing roller 140. Fig. 3(a) is an enlarged view of the pressing roller 140 in fig. 1 and a range surrounded by a dotted line frame a in fig. 1, and fig. 3(b) is a plan view of fig. 3(a) viewed from above along the z-axis. In fig. 3(b), the pressing roller 140 in fig. 3(a) is not illustrated.

First, the guide member 130 will be explained. The guide member 130 is a member for guiding the polarizing film 30 from which the release film 40 is peeled to travel. Since fig. 3 is a schematic view as in fig. 1, the mounting structure of the guide member 130 is omitted. The guide member 130 is mounted on a support member (not shown) provided upright on the platform 5. The support member is made of metal such as stainless steel, for example, and a non-adhesive surface treatment for preventing adhesion of an adhesive is applied to the guide surface 131 (the surface on the side in contact with the polarizing film 30) of the guide member 130. This is done for the purpose that one surface of the polarizing film 30 is an adhesive surface having adhesiveness.

That is, since the releasable release film 40 is attached to the adhesive surface of the polarizing film 30, and one surface (the surface on which the release film 40 is attached) of the polarizing film 30 from which the release film 40 is detached has adhesive properties, if the non-adhesive surface processing for preventing the adhesive from being attached is not applied to the guide surface 131 of the guide member 130, the adhesive surface of the polarizing film 30 is attached to the guide surface 131 of the guide member 130, and the polarizing film 30 cannot smoothly travel along the guide surface 131 of the guide member 130.

Non-adhesive surface processing for preventing adhesion of an adhesive is a known technique, and for example, a surface processing technique called "tosicl (registered trademark) S COATING" can be employed. By applying such surface processing to the guide surface 131 of the guide member 130, the polarizing film 30 can smoothly travel to the attachment starting end 10a of the glass substrate 10 without the adhesive surface of the polarizing film 30 from which the release film 40 is peeled adhering to the guide surface 131 of the guide member 130.

The guide member 130 is provided as: the guide surface 131 is inclined at an acute angle with respect to the glass substrate 10, with the tip end of the guide member 130 as an edge. Specifically, in the film member sticking apparatus 1 according to the embodiment, the guide member 130 has a triangular block shape, and the tip end portion 132 thereof has an acute angle.

As shown in fig. 3(a), the guide member 130 having such a structure is provided as: when the sticking start end 10a of the glass substrate 10 reaches a position (referred to as a sticking operation start position) on the perpendicular line L passing through the pressing point P of the pressing roller 140, the sticking start end 10a of the glass substrate 10 is positioned on the extension line of the guide surface 131. In addition, the guide member 130 is also provided at: the glass substrate 10 placed on the stage 20 is not contacted (position along the z-axis), and the height of the head 132 from the glass substrate 10 is reduced. The "pressing point P" of the pressing roller 140 refers to a point at which the pressing roller 140 applies a pressing force to the polarizing film 30 when the pressing operation of the polarizing film 30 is performed.

In the film member sticking apparatus 1 according to the embodiment, the inclination of the guide surface 131, that is, the angle θ formed between the guide surface 131 and the xy-plane (the angle θ formed between the guide surface 131 and the glass substrate 10 placed on the table 20) is set to 30 degrees. It is not necessary to set the angle θ formed between the guide surface 131 and the glass substrate 10 to be very strict 30 degrees, and the front end portion 30a of the polarizing film 30 may smoothly reach the attachment start end 10a of the glass substrate 10.

In addition, the guide member 130 is preferably provided as: when the pasting start end 10a of the glass substrate 10 reaches the pasting operation start position, the interval (interval along the x-axis) d between the leading end portion 132 of the guide member 130 and the pasting start end 10a of the glass substrate 10 is shortened as much as possible. The distance d varies depending on the inclination angle of the guide surface 131, and in the film member sticking apparatus 1 according to the embodiment, the distance d is 15 mm.

The guide member 130 is electrically grounded. Specifically, as described above, the guide member 130 is mounted on the support members (not shown) vertically provided on the platform 50, and the support members and the platform 50 are both made of metal, so that the guide surface 131 is electrically grounded via the support members and the platform 50. Although the guide surface 131 of the guide member 130 is applied with the non-adhesive surface processing as described above, such surface processing does not impair the conductivity of the guide surface 131.

Fig. 1 is a schematic view showing the film member sticking apparatus 1 according to the first embodiment, and therefore does not show a specific installation state of the platform 50, and the platform 50 is installed in a state of being electrically grounded to the ground of the factory. By doing so, the guide member 130 is electrically grounded together with the guide surface 131 thereof after passing through the support member and the stage 50.

As described above, since the tip end portion 132 of the guide member 130 is an edge, the distance between the tip end portion 132 of the guide member 130 and the attachment start end 10a of the glass substrate 10 can be reduced as much as possible, and the difference in height between the tip end portion 132 of the guide member 130 and the attachment start end 10a of the glass substrate 10 can be reduced as much as possible. In this way, by providing the folding portion with, for example, an arc-shaped folding portion (see a dotted circle B in fig. 7), the distance from the front end portion 30a of the polarizing film 30 to the attachment start end 10a of the glass substrate 10 can be shortened, and the polarizing film 30 can be prevented from being bent by its own weight before reaching the attachment start end 10 a. In this way, the front end portion 30a of the polarizing film 30 running on the guide surface 131 can accurately reach the attachment start end 10a of the glass substrate 10. Further, since the guide member 130 is provided so that the attachment start end 10a of the glass substrate 10 is positioned on the extension line of the guide surface 131, the leading end portion 30a of the polarizing film 30 running on the guide surface 131 can also be made to accurately reach the attachment start end 10a of the glass substrate 10 by such an arrangement.

Further, by electrically grounding the guide member 130, even if static electricity is applied to the polarizing film 30 as a film member, the static electricity can be removed. By removing the static electricity from the polarizing film 30, it is possible to not only make it difficult for dust or dirt to adhere to the polarizing film 30, but also to accurately adhere the polarizing film 30 to the glass substrate 10 when the polarizing film 30 is adhered to the glass substrate 10. In addition, when the glass substrate 10 to which the polarizing film 30 is attached is conveyed to the next process, the polarizing film 30 can be prevented from being conveyed to the next process in a state of being charged with static electricity.

Next, the pressing roller 140 will be explained. As shown in fig. 3(a), the pressing roller 140 has a structure in which two

rollers

141, 142 having different diameters are superimposed on each other in two stages along the perpendicular line L, and their

respective rotation axes

141a, 142a are provided in the direction of the front end portion 30a of the polarizing film 30 (in the direction along the y-axis). The

rotary shafts

141a and 142a of the two

pressing rollers

141 and 142 are rotatably attached to the pressing roller attaching member 143. The pressing roller mounting member 143 is mounted on the film member supply mechanism portion 100.

Here, when the pressing roller 141 positioned on the side contacting the polarizing film 30 of the two

pressing rollers

141 and 142 is set as the first pressing roller 141 and the other pressing roller 142 is set as the second pressing roller 142, the diameter Φ 1 (see fig. 3 a) of the first pressing roller 141 is set to be smaller than the diameter Φ 2 of the second pressing roller 142. In the film member sticking apparatus 1 according to the first embodiment, the diameter Φ 1 of the first pressing roller 141 is about 10 mm. The reason why the first pressing roller 141 and the second pressing roller 142 are configured to be overlapped in two stages and the diameter Φ 1 of the first pressing roller 141 is set to be smaller than the diameter Φ 2 of the second pressing roller 142 will be described later.

The pressing roller 140 (the first pressing roller 141 and the second pressing roller 142) having the above-described configuration is movable up and down in the z-axis direction (the direction of the arrow z-z') along with the pressing roller mounting member 143, and when the film member bonding apparatus 1 according to the embodiment is not performing the bonding operation (simply referred to as a non-bonding operation), the pressing roller 140 is separated from (positioned above) the plane (xy plane) included in the glass substrate 10 placed on the table 20, and when the film member bonding apparatus 1 according to the embodiment is performing the bonding operation (simply referred to as a bonding operation), the pressing roller 140 is lowered to perform the pressing operation on the polarizing film 30. The ascending and descending operations of the pressing roller 140 are performed by a control function provided in the control device 200.

In addition, the reason why the diameter Φ 1 of the first pressing roller 141 is set smaller than the diameter Φ 2 of the second pressing roller 142 and the second pressing roller 142 having a larger diameter is superimposed on the first pressing roller 141 is as follows.

That is, after the glass substrate 10 reaches the pasting operation start position, since the distance d between the front end portion 132 of the guide member 130 and the pasting start end 10a of the glass substrate 10 is 15mm as described above, in a state where the first pressing roller 141 presses the polarizing film 30, in order to prevent the first pressing roller 141 from contacting the guide member 130, it is necessary to set the diameter Φ 1 of the first pressing roller 141 as small as possible. On the other hand, once the diameter of the first pressing roller 141 is set to be small, the following results: there is a problem that a uniform pressing force cannot be applied to the entire width direction (width in the y-axis direction) of the polarizing film 30 by means of only the first pressing roller 141.

Specifically, the length of the polarizing film 30 in the width direction (in the y-axis direction of fig. 3) in fig. 3 is about 890 mm. On the other hand, if the length of the polarizing film 30 in the width direction (in the y-axis direction of fig. 3) is greater than 890mm, the length of the first pressing roller 141 along the rotation axis 141a (the length along the y-axis) also becomes long. At this time, the diameter Φ 1 of the first pressing roller 141 becomes small with respect to the length of the first pressing roller 141 along the rotation axis 141a, so that the first pressing roller 141 is easily bent, and once the first pressing roller 141 is bent, a uniform pressing force cannot be applied in the entire width direction. Therefore, while the diameter Φ 1 of the first pressing roller 141 is set as small as possible, the second pressing roller 142 having a larger diameter is further superimposed on the first pressing roller 141 so that the pressing force at the pressing point P is uniformly distributed in the entire width direction of the polarizing film 30.

By configuring the pressing roller 140 as described above, even when the distance d between the front end portion 132 of the guide member 130 and the attachment start end 10a of the glass substrate 10 is only 15mm, the polarizing film 30 can be reliably pressed in a state where the first pressing roller 141 is not in contact with the guide member 130. In addition, the second pressing roller 142 can also prevent the first pressing roller 141 from being bent, thereby helping the first pressing roller 141 to press the polarizing film 30 in the entire width direction with a uniform pressing force. In this manner, the second pressing roller 142 functions as an auxiliary roller that assists the pressing by the first pressing roller 141.

Next, the operation of the film member sticking apparatus 1 according to the embodiment (particularly, the sticking operation of the polarizing film 30) will be described.

Fig. 4 is a diagram for explaining the attaching operation of the polarizing film 30 in the film member attaching apparatus 1 according to the embodiment. Fig. 4(a) shows a state before the start of the pasting operation, and here, this state is referred to as an initial state. In this initial state, the table 20 is located at a position (START position) on the left side in the figure than the pressing roller 140 (the first pressing roller 141 and the second pressing roller 142). In the initial state, the glass substrate 10 (first glass substrate 10) to be bonded at this time is placed at a predetermined position on the stage 20. In addition, the amount of movement of the table 20 from the start position along the x-axis, the position along the y-axis, the angle around the z-axis (angle on the plane), and the like have been appropriately adjusted.

The front end portion (not shown) of the winding side on the release film 40 is connected to a winding roller (not shown) for winding the release film, and the front end portion 30a of the polarizing film (first polarizing film 30) as an object of attachment has reached the peeling roller 110 at this time. In this initial state, the pressing roller 140 (the first pressing roller 141 and the second pressing roller 142) is out of (above) the plane (xy plane) included in the glass substrate 10 placed on the stage 20.

In the initial state shown in fig. 4(a), first, the stage 20 is moved. That is, the controller 200 controls the table 20 to move in the right direction (arrow x direction) by a predetermined movement amount along the x axis. By this, the table 20 is moved toward the position (pasting operation start position) shown in fig. 4 (b). Specifically, the controller 200 controls the table 20 to move in the right direction along the x-axis, so that the bonding start end 10a of the glass substrate 10 reaches a position facing the pressing point P of the pressing roller 140.

When the table 20 moves to the bonding operation start position shown in fig. 4(b), a process of allowing the front end portion 30a of the polarizing film 30 from which the release film 40 is separated by the separation roller 110 to reach the bonding start end 10a of the glass substrate 10 is performed. That is, the control device 200 controls the feeding mechanism section 126 so that the polarizing film 30 reaches the attachment start end 10a of the glass substrate 10 (film member supply control). In this way, the feeding mechanism 126 holds the release film 40 by the gripper 127, and advances the release film 40 in the release film advancing direction (arrow x direction in the figure) by a predetermined amount of movement.

After the release film 40 is moved in the release film advancing direction by a predetermined moving amount by the feeding mechanism 126, the release film 40 is peeled from the first polarizing film 30 by the peeling roller 110, and the first polarizing film 30 from which the release film 40 is peeled is moved along the guide surface 131 of the guide member 130, and then the front end portion 30a of the first polarizing film 30 reaches the attachment start end 10a of the first glass substrate 10 (see fig. 4 (b)).

In this case, the control device 200 controls the feeding mechanism unit 126 based on the image data captured by the camera 150. As an example of the control of the feeding mechanism unit 126 by the control device 200, as described above, the control device 200 monitors the position of the rear end portion 30b (slit C1) of the polarizing film (first polarizing film 30) to be bonded at this time based on the image data from the camera 150, and operates the feeding mechanism unit 126 until the position of the rear end portion 30b (slit C1) reaches the target position. Thus, the front end portion 30a of the first polarizing film 30 reaches the attachment start end 10a of the first glass substrate 10. As described above, when the front end portion 30a of the first polarizing film 30 reaches the attachment start end 10a of the first glass substrate 10, the controller 200 controls the feeding mechanism 126 to release the holding of the release film 40. Then, the feeding mechanism portion 126 returns to the position at the initial state.

When the feeding mechanism portion 126 advances the release film 40 in the release film advancing direction, the dancer roll 125 is lowered from the position indicated by the broken line (the position of the dancer roll 125 in fig. 4 a) as shown in fig. 4 b, in accordance with the amount of movement of the feeding mechanism portion 126. By providing the dancer roll 125, the polarizing film 30 feeding operation by the feeding mechanism 126 and the release film 40 winding operation by the winding roll (not shown) can be performed independently of each other without the need to synchronize the feeding operation with the winding operation. The release film 40 may be wound by a winding roller (not shown) when the amount of lowering of the dancer roll 125 reaches a predetermined amount. When the winding roll (not shown) starts the winding operation of the release film 40, the dancer roll 125 returns to its original position (for example, the position shown in fig. 4 a).

When the release film 40 is advanced in the release film advancing direction by the feeding mechanism section 126, since the release film 40 is folded back by the peeling roller 110 in the advancing direction, not only can the release film 40 be prevented from being damaged when friction is generated on the surface of the release film 40, but also the folded-back portion (peeling roller 110) can be prevented from being worn.

That is, in the film member sticking apparatus 1 according to the embodiment, the folding portion for peeling the release film 40 from the polarizing film 30 is provided as a roller (peeling roller 110), and the release film 40 is folded back by the peeling roller 110 and then travels, thereby peeling the release film 40 from the polarizing film 30. Thus, when the release film 40 is peeled from the polarizing film 30, the folded portion (the peeling roller 110) can be prevented from being worn while preventing the release film 40 from being damaged.

Further, since the guide surface 131 of the guide member 130 is applied with a non-adhesive surface treatment for preventing the adhesive from adhering thereto, when the polarizing film 30 from which the release film 40 is peeled travels on the guide surface 131 of the guide member 130, the polarizing film 30 can smoothly travel without the adhesive surface of the polarizing film 30 from which the release film 40 is peeled adhering to the guide surface 131 of the guide member 130.

When the leading end portion 30a of the first polarizing film 30 reaches the attachment start end 10a of the glass substrate 10, the pressing roller 140 is moved (lowered) so that the leading end portion 30a of the polarizing film 30 is pressed against the attachment start end 10a of the glass substrate 10 by the pressing roller 140. As a result, when the pressing rollers 140 (the first pressing roller 141 and the second pressing roller 142) are lowered, the pressing point P of the first pressing roller 141 presses the front end portion 30a of the polarizing film 30 against the bonding start end 10a of the glass substrate 10 (see fig. 4 c). By this, the first polarizing film 30 is positioned on the attachment starting end 10a of the glass substrate 10. At this time, the second pressing roller 142 is in a state of pressing the first pressing roller 141.

Next, from the state shown in fig. 4(c) (the state where the front end portion 30a of the polarizing film 30 is pressed against the attachment start end 10a of the glass substrate 10), the stage 20 is moved, and the polarizing film 30 is attached to the glass substrate 10 with the attachment start end 10a of the glass substrate 10 as a starting point. That is, from the state shown in fig. 4 c, the stage 20 is moved in the direction of the arrow x' along the x-axis (left direction in the drawing), and the first glass substrate 10 is bonded with the bonding start end 10a as the starting point. At this time, since the pressing roller 140 is maintained in a state of pressing the first polarizing film 30, when the table 20 moves in the arrow x' direction (left direction in the drawing), the first polarizing film 30 is pressed against the glass substrate 10 while the first pressing roller 141 rotates clockwise and the second pressing roller 142 rotates counterclockwise.

In the attaching operation shown in fig. 4(d), a constant tension is always applied to the release film 40 from the dancer roll 125. Therefore, while the attaching operation of the first polarizing film 30 is performed, the release film 40 is peeled from the first polarizing film 30 by further lowering the tension adjusting roller 125 from the position of the broken line in fig. 4(d), for example. In this case, the winding operation of the release film 40 by the winding roller (not shown) may be set so that the winding operation is started when the amount of lowering of the dancer roll 125 reaches a predetermined amount.

By providing such a dancer roll 125, it is possible to perform each operation independently without synchronizing the movement of the table 20 with the winding of the release film 40 by the winding roll at the time of the bonding operation.

Further, even when the above-mentioned attaching work is performed, since the release film 40 travels after being folded back by the peeling roller 110, friction is not generated on the surface of the release film 40, and the release film 40 can be prevented from being damaged, and not only can the abrasion of the peeling portion (peeling roller 110) be prevented, but also the abrasion of the folded-back portion (peeling roller 110) can be prevented.

When the table 20 is further moved in the direction of the arrow x' from the state shown in fig. 4(d), it returns to the position shown in fig. 4(a) (the same position as in the initial state). In this way, the process of attaching the first polarizing film 30 to the first glass substrate 10 is completed. Next, a step of attaching the polarizing film (second polarizing film 30) to the next glass substrate (second glass substrate 10) is performed. In the step of attaching the second polarizing film 30 to the second glass substrate 10, the first glass substrate 10 to which the first polarizing film 30 is attached is removed from the table 20, and then the second glass substrate 10 is placed on the table 20, and then the steps shown in fig. 4(a) to 4(d) are performed. By repeating these steps, the polarizing film can be sequentially attached to each glass substrate.

As described above, according to the film member sticking apparatus 1 of the embodiment, the folding portion for peeling the release film 40 from the polarizing film 30 is provided as a roller (peeling roller 110), and the release film 40 is folded back by the peeling roller 110 and then travels, thereby peeling the release film 40 from the polarizing film 30. Thus, the release film 40 can be prevented from being damaged without friction on the surface of the release film 40, and the traveling operation of the polarizing film 30 and the peeling operation of the release film 40 can be reliably performed while preventing the folded portion (the peeling roller 110) from being worn. Further, since the peeling roller 110 has a bearing, the rotation of the roller becomes smooth, and the release film 40 can be smoothly peeled with a small force when the release film 40 is peeled from the polarizing film 30, and the release film 40 can be more smoothly advanced after being folded back.

Further, since the guide member 130 for guiding the polarizing film 30 to travel is provided on the front side of the peeling roller 110, and the non-adhesive surface treatment for preventing the adhesive from adhering is applied to the guide surface 131 of the guide member 130, it is possible to prevent the adhesive surface of the polarizing film 30 from adhering to the guide surface 131 of the guide member 130, and to smoothly travel the polarizing film 30 on the guide surface 131 of the guide member 130.

Further, since the tip portion 132 of the guide member 130 is an edge, not only the distance between the tip portion 132 of the guide member 130 and the attachment start end 10a of the glass substrate 10 can be shortened as much as possible, but also the difference in height between the tip portion 132 of the guide member 130 and the attachment start end 10a of the glass substrate 10 can be reduced as much as possible. In this way, by providing the folding portion with, for example, an arc-shaped folding portion (see a dotted circle B in fig. 7), the distance from the forward end portion 132 of the polarizing film 30 in the traveling direction to the attachment start end 10a of the glass substrate 10 can be shortened, and the polarizing film 30 can be prevented from being bent by its own weight before reaching the attachment start end 10 a. In this way, the front end portion 30a of the polarizing film 30 running on the guide surface 131 can accurately reach the attachment start end 10a of the glass substrate 10. Further, since the guide member 130 is provided so that the attachment start end 10a of the glass substrate 10 is positioned on the extension line of the guide surface 131, the leading end portion 30a of the polarizing film 30 running on the guide surface 131 can also be made to accurately reach the attachment start end 10a of the glass substrate 10 by such an arrangement.

Further, since the pressing roller 140 is composed of the first pressing roller 141 having a small diameter positioned on the side contacting the polarizing film 30 and the second pressing roller 142 having a large diameter for assisting the pressing force of the first pressing roller 141, even when the interval between the leading end portion 132 of the guide member 130 and the bonding start end 10a of the glass substrate 10 is narrow, the polarizing film 30 can be reliably pressed while avoiding contact with the guide member 130 due to the feature of the small diameter of the first pressing roller 141. In addition, since the second pressing roller 142 functions to prevent the first pressing roller 141 from being warped, the polarizing film 30 can be pressed with a uniform pressing force in the entire width direction of the polarizing film 30 (the direction along the rotation axis of the pressing roller 140).

Further, by providing the tension adjusting roller 125 in the release film advancing mechanism 120, when the attachment work for attaching the polarizing film 30 to the glass substrate 10 is performed (for example, see fig. 4(d)), the work for moving the table 20 in the arrow x' direction and the winding work for winding the release film 40 by the winding roller (not shown) can be performed independently without being synchronized with each other. In addition, even when the operation of supplying the polarizing film 30 is performed by the feeding mechanism section 126 (see, for example, fig. 4(b)), the operation of supplying the polarizing film 30 and the operation of winding the release film 40 by a winding roll (not shown) can be performed independently without synchronizing them.

The present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the present invention. For example, several variations described below may be implemented.

(1) In the above embodiment, when the glass substrate 10 reaches the attachment operation start position, although the distance d between the front end portion 132 of the guide member 130 and the attachment start end 10a of the glass substrate 10 is set to 15mm, the distance d is not limited to 15mm, and may be set to an appropriate value according to the angle of the guide surface 131 of the guide member 130 with respect to the xy plane, and the material and size of the polarizing film 30.

(2) In the above embodiment, although the diameter of the first pressing roller is about 10mm, it is not always necessary to set the diameter of the first pressing roller to about 10mm, and an appropriate diameter may be set according to the interval d between the leading end portion 132 of the guide member 130 and the attachment starting end 10a of the glass substrate 10.

(3) In the above embodiment, the guide member 130 is exemplified as a block shape having a triangular shape, but the shape of the guide member 130 is not limited thereto, and the guide member 130 may be, for example, a plate shape as long as the leading end portion 30a of the polarizing film 30 of the release film 40 peeled off can be advanced toward the pasting start end 10a of the glass substrate 10 placed on the upper stage 20.

Fig. 5 is an explanatory diagram for explaining a state in which the guide member 130 is plate-shaped. Fig. 5 is a view corresponding to fig. 3(a), and differs therefrom only in that the guide member 130 has a plate-like shape, and other components are the same as those in fig. 3, and therefore the same components are denoted by the same reference numerals. Even when the guide member 130 has a plate-like shape, the tip end portion 132 should preferably have an acute angle as shown in fig. 5. In this way, the front end portion 30a of the polarizing film 30 can accurately reach the attachment start end 10a of the glass substrate 10. Even when the guide member 130 has a plate-like shape, the guide surface 131 of the plate-like guide member 130 is similarly subjected to a non-adhesive surface treatment for preventing adhesion of an adhesive. Further, the guide member 130 is not necessarily as thick as shown in fig. 5, and a thin plate member having a plate thickness of, for example, about 1mm to several mm may be used.

Even when the guide member 130 is formed in a plate shape as shown in fig. 5, if the plate-shaped guide member 130 is made of metal such as stainless steel as in the above-described embodiment and is electrically connected to the ground, static electricity attached to the polarizing film 30 as a film member can be removed in the same manner. By removing the static electricity from the polarizing film 30, it is possible to not only make it difficult for dust or dirt to adhere to the polarizing film 30, but also to accurately adhere the polarizing film 30 to the glass substrate 10 when the polarizing film 30 is adhered to the glass substrate 10. In addition, when the glass substrate 10 to which the polarizing film 30 is attached is conveyed to the next process, the polarizing film 30 can be prevented from being conveyed to the next process in a state of being charged with static electricity.

(4) In the above-described embodiment, the film member supply mechanism 100 is fixed and the table 20 is moved along the x-axis when the attaching operation shown in fig. 4 is performed, but a form in which the table 20 is fixed and the film member supply mechanism 100 is reciprocated may be employed.

Specifically, as in the initial state shown in fig. 4(a), the stage 20 is fixed in advance in a state where the glass substrate 10 is placed on the stage 20. The film member supply mechanism 100 is moved in the direction of arrow x' in fig. 4 (left direction in the figure) so that the pressing point P of the first pressing roller 141 coincides with the bonding start end 10a of the glass substrate 10. In this state, the feeding mechanism portion 126 is operated to move the polarizing film 30 (first polarizing film 30) to the bonding start end 10a of the glass substrate 10, and the pressing roller 140 is lowered to move the film member supply mechanism portion 100 in the direction of arrow x (right direction in the figure) in fig. 4. By performing the above operation, the same effects as those obtained in the above embodiment can be obtained in the same manner.

Further, the operation of reciprocating the table 20 along the x-axis and the operation of reciprocating the film member supply mechanism 100 along the desired x-axis may be used in combination. Specifically, in the initial state shown in fig. 4 a, the film member supply mechanism 100 is moved in the direction of the arrow x 'in fig. 4 (the right direction in the drawing) while the table 20 is moved in the direction of the arrow x' in fig. 4 (the left direction in the drawing) so that the pressing point P of the first pressing roller 141 coincides with the bonding start end 10a of the glass substrate 10, and in this state, the feeding mechanism 126 is operated so that the polarizing film 30 (the first polarizing film 30) advances to reach the bonding start end 10a of the glass substrate 10, and the pressing roller 140 is lowered, and then the film member supply mechanism 100 is moved in the direction of the arrow x 'in fig. 4 (the left direction in the drawing) while the table 20 is moved in the direction of the arrow x' in fig. 4, and by performing the above operation, not only the effect obtained when the table 20 is reciprocated in the x axis, the effect of speeding up the pasting operation can also be obtained.

(5) As another example of controlling the feeding mechanism unit 126 by the control device 200, there may be: the position of the rear end portion 30b of the first polarizing film 30 is monitored, and the release film is controlled to travel in the release film traveling direction until the position of the rear end portion 30b of the first polarizing film 30 moves according to the target movement amount of the rear end portion 30b of the polarizing film 30. In this way, the front end portion 30a of the polarizing film 30 can accurately reach the pressing point P of the first pressing roller 141. This operation can be performed by setting a target movement amount, which is a pressing point P at which the front end portion 30a of the polarizing film 30 reaches the first pressing roller 141 after moving the rear end portion 30b of the polarizing film 30 by a certain movement amount from the predetermined position.

(6) In the above embodiment, the polarizing film is attached to one of the two glass substrates used for the liquid crystal panel (the glass substrate provided on the surface side of the liquid crystal layer and the glass substrate provided on the back side of the liquid crystal layer), but the same effect can be obtained by attaching the polarizing film to the glass substrate used on the other side.

(7) In the above embodiments, the film member is used as the polarizing film for the liquid crystal panel, the member to be bonded is used as the glass substrate for the liquid crystal panel, and the film member bonding apparatus is used to bond the polarizing film to the glass substrate.

(8) In the above embodiment, the film member is not limited to a rectangular shape but may be a square shape, but is not limited to a rectangular shape and a square shape (rectangular shape).

(9) In the above embodiment, the diameter of the first pressing roller 141 is set smaller than that of the second pressing roller 142, but the first pressing roller 141 and the second pressing roller 142 may be set to the same diameter as long as the second pressing roller 142 can function as an auxiliary roller.

(10) In the above embodiment, although the pressing roller 140 is configured by stacking two pressing rollers in two stages, it is not limited to two pressing rollers, and three or more pressing rollers may be stacked.

(11) In the above embodiment, the guide member 130 is electrically grounded via the support member (not shown) and the stage 50, but the guide member 130 may be directly grounded by connecting the guide member 130 with a lead wire for grounding.

Description of the symbols

1 … film member sticking device; 10 … glass substrate (member to be bonded); 10a … pasting the starting end; 20 … workbench; 30 … polarizing film (film member); a front end portion (traveling direction front end portion) of 30a …; 30b … rear end portion (traveling direction rear end portion); 40 … release film; a 50 … platform; 60 … guide rails; 100 … film member supply mechanism portion; 110 … peeling roller; 120 … a release film advancing mechanism section; 125 … dancer rolls; 126 … a feeding mechanism part; 130 … guide member; 131 … guide surface; 132 … guide the front end of the member; 140 … pressing roller; 141 … a first pressing roller; 142 … second press roller; 150 … video camera; c1, C2 … incisions; p … pressing point

Claims

1. A film member sticking apparatus for moving a film member while peeling a releasable release film from a film member having one surface serving as a sticking surface and having the releasable release film stuck to the sticking surface, and sticking the film member to a member to be stuck with the sticking start end as a starting point after the leading end portion in the moving direction of the film member from which the release film is peeled reaches the sticking start end of the member to be stuck, the apparatus comprising:

a table for placing the member to be adhered; and

a film member supply mechanism section that advances the film member while peeling the release film from the film member and supplies the film member so that a leading end portion in a proceeding direction of the film member reaches a pasting start end of the member to be pasted,

wherein the film member supply mechanism portion has:

a peeling roller that peels the release film from the film member by turning back the release film in a direction almost opposite to a traveling direction of the film member;

a release film advancing mechanism section that advances the release film that has been folded back by the peeling roller;

a guide member having a guide surface which is brought into contact with the film member after the release film is peeled off by the peeling roller and guides the advance of the film member when the film member advances toward the application start end of the member to be applied, and on which a non-adhesive surface processing for preventing the adhesion of the adhesive agent is applied; and

a pressing roller that presses a forward end portion of the film member in a traveling direction thereof at the application start end when the film member travels along the guide surface of the guide member and the forward end portion of the film member in the traveling direction reaches the application start end of the applied member,

the guide member is mounted on a support member and is configured to: the guide surface is formed at an acute angle with respect to the member to be adhered with the leading end portion of the guide member being an acute-angled edge, and the member to be adhered is positioned with its adhesion start end on an extension line of the guide surface, and is made of metal and electrically grounded.

2. The film member application apparatus according to claim 1, wherein:

wherein the press roller has a structure in which a plurality of press rollers are stacked in multiple stages, and respective rotation axes of the plurality of press rollers are provided along a direction of a leading end portion in a traveling direction of the film member.

3. The film member application apparatus according to claim 2, wherein:

wherein a diameter of a pressing roller of the plurality of pressing rollers on a side in contact with the film member is set smaller than diameters of the other pressing rollers.

4. The film member application apparatus according to claim 1, wherein:

wherein the release film advancing mechanism section has a dancer roll provided on a downstream side in an advancing direction of the release film after being folded back by the peeling roll, and the release film is applied with a tension from the dancer roll.

5. The film member application apparatus according to claim 4, wherein:

wherein a feed mechanism portion capable of moving the release film by a predetermined movement amount in a moving direction of the release film is disposed between the peeling roller and the dancer roller, and the front end portion of the film member in the moving direction reaches the pasting start end of the member to be pasted.

6. The film member application device according to claim 5, further comprising:

a control device for controlling the work table and the film member supply mechanism portion,

the film member supply mechanism further includes a camera capable of photographing a predetermined portion of the film member,

the control device has a control function, and the control function is as follows: the position of the predetermined portion of the film member is monitored based on the image data of the camera, and a feed mechanism is controlled so that the forward end of the film member in the advancing direction reaches the pasting start end of the member to be pasted.

7. The film member application apparatus according to claim 6, wherein:

wherein the predetermined portion of the film member is a rear end portion of the film member in the traveling direction.

8. The film member sticking apparatus according to any one of claims 1 to 7, wherein:

wherein the peeling roller is a roller having a bearing.

9. The film member sticking apparatus according to any one of claims 1 to 7, wherein:

wherein the film member is in the form of a long sheet and has slits provided along the longitudinal direction of the long sheet-like film member in a state where the release film is left at every predetermined length, and the film member is peeled off by the peeling roller by the release film to be formed into a small piece, and the small piece of film member is adhered to the member to be adhered.

10. The film member sticking apparatus according to any one of claims 1 to 7, wherein:

wherein the film member is a polarizing film for a liquid crystal panel, and the member to be adhered is a glass substrate for the liquid crystal panel.

11. A film member sticking apparatus for moving a film member while peeling a releasable release film from a film member having one surface serving as a sticking surface and having the releasable release film stuck to the sticking surface, and sticking the film member to a member to be stuck with the sticking start end as a starting point after a leading end portion in a moving direction of the film member from which the release film is peeled reaches the sticking start end of the member to be stuck, characterized in that:

after the release film is peeled off from the film member and before the film member reaches the application start end of the applied member, the film member is guided to travel by a guide member, the guide member having a guide surface which comes into contact with the film member and guides the film member to travel and to which a non-adhesive surface processing is applied, a leading end portion of the film member being an acute-angled edge, and being mounted on a support member, and being composed of metal and being electrically grounded.