TWI558528B - Knife edge and liquid crystal display device manufacturing system including same - Google Patents

Description

Cutting edge and manufacturing system of liquid crystal display device including the same

The present invention relates to a blade and a liquid crystal display device manufacturing system including the same.

Conventionally, in a manufacturing system of an optical display device, a method of bonding an optical film (a laminated film or a polarizing film) to a liquid crystal panel is known as a chip to panel method.

In the manufacturing system of the optical display device, the optical film is bonded to both surfaces of the liquid crystal panel, but in the case of slicing to the panel, the polarizing film is bonded one by one to the liquid crystal panel. Therefore, there is a disadvantage of low production efficiency.

On the other hand, another aspect of the manufacturing system of the optical display device includes a roll-to-panel bonding method. For example, a manufacturing system and a manufacturing method of the optical display device of Patent Document 1 are listed.

In the manufacturing system of Patent Document 1, after the optical film is bonded to the upper surface of the liquid crystal panel, the liquid crystal panel is rotated, and the optical film is bonded from the lower surface. In this manner, the optical film provided with the release film by the adhesive cut into a specific width is cut into a specific length, and the release film and the optical film are peeled off and bonded to the liquid crystal panel. A taper is used at the time of peeling, and the front end is a round blade, whereby peeling can be performed efficiently.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Invention Patent Gazette "Specification No. 4307510 (issued on August 5, 2009)"

Usually, the optical film (polarizing film) provided with the release film is cut into a specific length in accordance with the cut width of the liquid crystal panel. However, in this case, the end surface shape of the peeling film cut into a specific width is cut off. Shape deformation. After that, when the release film is peeled off from the optical film, the end surface of the release film which is deformed causes friction between the blade edge side and the blade edge, and there is a problem that foreign matter is generated from the contact portion.

The present invention has been made in view of the above conventional problems, and an object thereof is to reduce the friction of a portion of the blade side that is in contact with the blade in the end surface of the deformed release film.

In order to solve the above problems, the blade of the present invention includes a laminated film including a release film, and a blade that peels the release film, the first surface facing the conveyed laminated film, and the front end portion connected to the first surface In the front end portion, a rotatable roller portion is assembled and the roller portion protrudes from the first surface.

According to this configuration, the laminated film is conveyed along the first surface of the blade, and the release film is peeled off from the laminated film at the tip end portion of the blade. At the tip end portion of the blade, the rotatable roller portion is assembled to protrude from the first surface. Therefore, when the laminated film is wound around the tip end portion of the blade and conveyed, the roller portion is rotated in accordance with the conveyance of the laminated film. Therefore, the friction between the blade and the laminated film is reduced, and the generation of foreign matter is suppressed.

The blade of the present invention, as described above, has a first face facing The laminated film to be conveyed; and the front end portion are connected to the first surface, and a rotatable drum portion is assembled to the front end portion, and the roller portion protrudes from the first surface.

Therefore, the laminated film conveyed along the first surface contacts the roller portion, and the roller portion rotates as the laminated film is conveyed. Therefore, the friction between the blade and the laminated film is reduced, and the generation of foreign matter is suppressed.

An embodiment of the present invention will be described with reference to the first to seventh embodiments, but the present invention is not limited thereto.

The first drawing is a side view showing a manufacturing system (manufacturing system of a liquid crystal display device) 100 according to the present embodiment. The manufacturing system 100 includes a bonding mechanism that bonds the polarizing film 2a to both surfaces of the liquid crystal panel 1. In the conveyance direction D1 of the first drawing, the conveyance direction of the liquid crystal panel 1 of the manufacturing system 100 is shown.

Next, each component provided in the bonding mechanism of the manufacturing system 100 is demonstrated. The bonding mechanism of the manufacturing system 100 includes the winding portion 3, the guide roller 4, the half cutter 5, the support table 6, the blade 7, the nip roller 8a‧8b, and the winding portion 9 ("clamping roller 8a" ‧8b" indicates "clamping roller 8a and clamping roller 8b". The status of other components is also the same). Further, the transport roller (liquid crystal panel transport unit) 10 and the reversing unit 11 are provided, and the winding unit 13, the guide drum 14, the half cutter 15, the support table 16, the blade 17, the nip roller 18a, 18b, and the roll are provided. Take part 19.

The winding portion 3 is a person who winds the polarizing film toward the conveyance direction of the liquid crystal panel 1. In the first figure, the unwinding portion 3 is to be laminated on the polarizing film 2a. The structure in which the laminated film 2 formed of the film 2b is wound up. In the manufacturing system 100, the unwinding portion 3 is configured to move in the horizontal direction with respect to the drum shaft of the rolled laminated film 2. The movement is performed by a slide mechanism provided at a lower portion of the take-up portion 3. Further, as the winding portion 3, a conventionally known turret may be used.

The laminated film 2 is sent out via the guide roller 4. In the present embodiment, the speed, tension, and the like for winding up the laminated film 2 can be appropriately adjusted. The size of the winding portion 3 can be appropriately changed depending on the size of the laminated film 2 to be used, and is not particularly limited. For example, a winding portion 3 of a laminated film 2 having a film width of 300 mm or more and 1200 mm or less can be used.

The laminated film 2 has a three-layer structure, and a known structure can be employed. The laminated film 2 is composed of a polarizing film 2a, an adhesive layer not shown, and a release film 2b.

As a structural example of the specific polarizing film 2a, the following structures are mentioned. In other words, a TAC (cellulose triacetate) film or the like which is a protective film is bonded to both surfaces of the polarizing film, and the adhesive layer is applied (laminated) to the TAC film on one or both sides, and the release film 2b is laminated on the adhesive layer.

As the above-mentioned polarizing film, a film obtained by dyeing a polyvinyl alcohol film with iodine or the like and extending in one axial direction can be used. Further, in place of the above-mentioned film, a partially-formified polyvinyl alcohol-based film, an ethylene vinyl acetate-based copolymer partially saponified film, a hydrophilic polymer film such as a cellulose-based film, or the like, or a dehydrated product of polyvinyl alcohol or A polyene alignment film or the like of a polyvinyl chloride dehydrochlorinated product or the like.

The total thickness of the adhesive layer 2a and the release film 2b is not particularly limited, but may be, for example, 100 μm or more and 500 μm or less. Moreover, the thickness of the polarizer film in the polarizing film 2a is about 1 μm or more and 50 μm or less. Further, in practical use of the laminated film 2, other layers may be included in addition to the above three layers in the range of no problem.

After the release film 2b is removed, the adhesive layer is used to bond the polarizing film 2a and the liquid crystal panel 1. The adhesive for the adhesive layer is not particularly limited, and an adhesive such as an acrylic, an epoxy resin or a polyurethane may be used. However, it is necessary to easily peel off the release film 2b. Therefore, the type of the adhesive is selected in accordance with the release film 2b. Moreover, the thickness of the adhesive layer can be appropriately changed, and can be, for example, 0.5 μm or more and 75 μm or less.

As the release film 2b, a known release film can be used. Specifically, a polyester film, a polyethylene terephthalate film, or the like can be used. The thickness of the release film is not particularly limited, but a release film of 5 μm or more and 100 μm or less is preferably used. Further, the width of the release film can be made 300 mm or more and 1200 mm or less. Further, the release film 2b is generally referred to as a protective film, a separator, or the like.

The laminated film 2 is conveyed through each of the guide rolls 4. However, since the liquid crystal panel 1 has a sheet shape, it is necessary to cut the long polarizing film 2a and the adhesive layer before bonding. That is, it is necessary to half-cut the laminated film 2. The components used for the half-cutting are the half cutter 5 and the support table 6. The support table 6 is disposed at a position where the peeling film 2b is contacted, in order to laminate the film 2 It is difficult to create a shake and is set. The polarizing film 2a and the adhesive layer are cut by the half cutter 5 in a state where the peeling film 2b side is supported. At this time, the release film 2b is not cut. That is, the laminated film 2 is half-cut.

The blade 7 is a member for removing the release film 2b from the laminated film 2. The material constituting the blade 7 can be applied to a metal material, a resin material, or the like, and is not particularly limited. However, stainless steel, aluminum, and a resin material are recommended because of corrosion resistance. Further, the blade 7 will be described later with reference to the second to sixth figures.

Although not shown in the drawings, the manufacturing system 100 includes a position adjusting device that adjusts the width direction of the laminated film 2 to adjust the laminated film 2‧12 conveyed along the blade 7‧17 (peeling film 2b) ) The location of the transfer. According to the position adjusting device described above, even if the end surface of the laminated film 2 is meandered, the position of the laminated film 2 can be adjusted to an appropriate conveyance position. The reason why the position adjusting device is provided is that the laminated film 2 is usually cut into a short width, and the end face of the laminated film 2 is usually not flat (snake) during the slitting process. The position adjusting device is composed of a camera that confirms the position of the end faces of the laminated film 2 and the peeling film 2b, and a guide roller adjusting device that adjusts the position of the guide roller 4.

Next, the conveyance roller 10 provided in the upper part of the manufacturing system 100 is demonstrated. The liquid crystal panel 1 is conveyed between the nip rollers 8a and 8b in order to be bonded to the polarizing film 2a.

As the liquid crystal panel 1, a known liquid crystal panel can be used, and for example, a liquid crystal panel in which an alignment film is disposed between a substrate such as a glass substrate and a liquid crystal layer can be used.

The transport roller 10 is a member that transports the liquid crystal panel 1. The transport roller 10 may be capable of transporting the liquid crystal panel, and may be replaced with another member (for example, a robot arm). Moreover, the speed at which the liquid crystal panel 1 is transported can be adjusted at any time, and is not particularly limited.

The nip roller 8a‧8b is a member which bonds the polarizing film 2a and the liquid crystal panel 1. The lower holding roller 8b of the holding rollers 8a and 8b is disposed at the same height as the conveying roller 10. On the other hand, the nip roller 8a is disposed above the nip roller 8b, and the polarizing film 2a is bonded to the lower surface of the liquid crystal panel 1 between the nip roller 8a and the nip roller 8b.

The distance between the holding rollers 8a and 8b can be changed, and the bonding is performed by pressing the adhesive layer of the polarizing film 2a and the liquid crystal panel 1. The pressure of the nip roller 8a‧8b at the time of bonding can be appropriately adjusted according to the kind of the adhesive, the thickness of the polarizing film 2a, and the like.

The liquid crystal panel 1 to which the polarizing film 2a is bonded to the lower surface is reversed to be changed in the front and back sides, and is reversed and grown along the short side in the conveyance direction. In the first figure, the liquid crystal panel inverted by the inverting portion 11 is indicated by the liquid crystal panel 1a. In the manufacturing system 100, the robot arm is used as the reversing unit 11, but the front and back of the liquid crystal panel 1 and the side along the transport direction can be changed without particular limitation. The liquid crystal panel 1 is reversed by the inversion portion 11, and the polarizing film 12a can be bonded to the lower surface of the liquid crystal panel 1 (the polarizing film is not bonded). The absorption axis of the polarizing film 12a can be perpendicular to the absorption axis of the polarizing film 2a. .

Further, the liquid crystal panel 1 can be transported along the transport direction in the long side, and in this case, the liquid crystal panel 1a inverted by the inversion portion 11 is changed. The short side is transported along the transport direction.

The liquid crystal panel 1a which is reversed and becomes the long side along the conveyance direction D1 is conveyed along the conveyance direction D1, and reaches the nip roller 18a‧18b. The interval between the nip rollers 18a and 18b is the width of the polarizing film 2a to be bonded only, and the nip rollers 18a and 18b are disposed to be wider than the interval between the nip rollers 8a and 8b.

The laminated film 12 is wound from the unwinding portion 13 under the nip roller 18b, and the polarizing film 12a and the adhesive layer in the laminated film 12 are half-cut by the half cutter 15. Thereafter, the peeling film 12b is peeled off from the laminated film 12 by the blade 17, and the polarizing film 12a is bonded to the lower surface of the liquid crystal panel 1a via the adhesive layer between the holding roller 18a and the holding roller 18b. The liquid crystal panel 1a in which the polarizing film is bonded to both surfaces corresponds to a liquid crystal display device, and the liquid crystal display device is manufactured by the manufacturing system 100.

The blade 7 of the present invention will be further explained. Also, the same applies to the blade 17. The second figure is a side view of the blade 7. The blade 7 includes an upper surface (second surface) 20, a front end portion 21, a lower surface (first surface) 22, and a rear end 23. Further, since the blade 7 reduces the friction with the peeling film 2b, the freely rotatable drum (roller portion) 25 is assembled to the tip end portion 21, and is smoothly connected to the upper surface 20, the tip end portion 21, and the lower surface of the blade. 22 shape. Specifically, the drum 25 has a cylindrical shape as a whole and has a circular cross section. The upper surface 20 and the lower surface 22 have a planar shape, and the distal end portion 21 has a shape that is curved to be smoothly connected to the upper surface 20 and the lower surface 22.

The lower surface 22 is a surface facing the laminated film 2, and the lower surface 22 The front end portion 21 is smoothly connected, and no corner is formed. Further, the front end portion 21 and the upper surface 20 are also smoothly connected, and no corner is formed. Since the damage peeling film 2b has a problem, the lower surface 22, the front end portion 21, and the upper surface 20 preferably have a smooth shape at the contact portion of the release film 2b, and the release film 2b may not have a smooth shape when it is not in contact. For example, the lower surface 22 and the side surface 24a are not smoothly connected to each other to form an angle, but since the side surface 24a is not in contact with the release film 2b, there is no problem.

The side surface 24a‧24b is preferably connected to the upper surface 20, the front end portion 21, the lower surface 22, and the rear end 23, and the shape of the side surface 24a‧24b is not particularly limited, and may be a flat surface or a curved surface. Further, as a modification of the blade 7, a configuration is provided instead of the side surface 24a‧24b, and a support member for supporting the front end portion 21 and the lower surface 22 is provided. The front end portion 21 and the lower surface 22 are supported by the support member, and the blade of the present invention can be constructed by maintaining the structure of the blade. Here, the smooth shape refers to a shape formed by at least one of a plane and a curved surface.

The rear end 23 is preferably connected to the upper surface 20, the lower surface 22, and the side surface 24a‧24b, and the shape of the rear end 23 is not particularly limited. Like the side surface 24a‧24b, it may be a shape such as a flat surface or a curved surface, or may be a support member for supporting the upper surface 20 and the lower surface 22 instead of the rear end 23. Further, even if the rear end 23 does not exist, if the structure of the blade 7 including the front end portion 21 and the lower surface 22 can be maintained, the rear end 23 may not exist.

The third figure is a side view showing the angle of the front end portion 21 of the blade 7. As shown in the third figure, the front end portion 21 has an arc shape. Therefore, the side surface (and the cross section) of the front end portion 21 is fan-shaped, at the blade edge 7. The front end portion 21 has a central angle A of 155 degrees. Since the upper surface 20 and the lower surface 22 are connected to the front end portion 21 along the normal line of the front end portion 21, the upper surface 20 and the lower surface 22 are not horizontal to each other and have an inclination.

Since the roller 25 protrudes from the lower surface 22, there is a gap between the peeling film 2b and the tip end portion 21. When the release film is peeled off from the laminated film, large friction is likely to occur. Therefore, in the blade according to the present invention, at least the roller 25 can protrude from the surface of the arc-shaped normal line including the distal end portion 21 and the surface of the lower surface 22. In the blade 7, the roller 25 protrudes from the upper surface 20, but this embodiment is a preferred embodiment in which the friction between the blade and the release film is further reduced.

Further, the arc shape (side surface and cross section) of the distal end portion 21 is not a sector shape in which the central angle A is limited to 155 degrees. For example, the central angle A of the circular arc shape may be a sector shape of 30 or more and 180 or less. Preferably, the arc shape of the distal end portion 21 is a sector shape in which the central angle A is 45° or more and 180° or less, and more preferably, the central angle A is 90° or more and 180° or less, particularly preferably, the center. The angle A is a fan shape of 120° or more and 180° or less. When the central angle A is less than 30°, the distance between the peeled release film 2b and the polarizing film 2a is close to each other, and it becomes difficult to carry out these conveyance.

On the other hand, in the case where the central angle A is 45 or more and even 120 or more, the release film 2b and the polarizing film 2a can be conveyed in a more different conveyance direction, and it is preferable to provide the easy-removable release film 2b. System 100. In the case where the central angle A is 180°, the upper surface 20 and the lower surface 22 are formed in parallel, and the front end portion 21 is formed into a cross section. In the semicircular shape, by setting the radius of the drum 25 larger than the front end portion 21, the drum 25 can be protruded from the lower surface 22 and assembled to the front end portion 21. Further, in the case where the central angle A exceeds 180°, the upper surface 20 cannot be formed along the distal end portion 21, and it is difficult to design the distal end portion 21 and the upper surface 20 to have a smooth structure.

The release film 2b provided in the laminated film 2 is conveyed along the lower surface 22. Thus, the conveyance of the peeling film 2b along the lower surface 22 can be performed by adjusting the position of the guide roller 4, the blade 7, and the nip roller 8b. Since the adhesive layer (not shown) and the peeling film 2b have a small adhesive force, the peeling film 2b conveyed along the lower surface 22 is wound around the drum 25 to change the transport direction, and is separated from the adhesive layer, and is carried along the drum 25. Transfer. On the other hand, the polarizing film 2a fixed in the transport direction along the lower surface 22 is bonded to the liquid crystal panel 1 after being separated from the peeling film 2b and transported together with the adhesive layer.

The radius of the distal end portion 21 is appropriately changed depending on the thickness and hardness of the release film 2b. Therefore, it is difficult to specify clearly. However, as an example, the radius of the sector side surface of the distal end portion 21 may be 1 mm or more and 10 mm or less. It is preferably 2 mm or more and 5 mm or less. Further, in the blade 7, the radius of the tip end portion 21 is 2 mm.

The drum 25 is rotated in an arc shape along the tip end portion 21. The drum 25 is not shown but has a rotating shaft which is located perpendicular to the conveying direction of the peeling film 2b, and is peeled off the film 2b (laminated film) 2) When the roller 25 is contacted, the release film 2b moves at the same speed as the roller 25. Further, the drum 25 may be rotated in the conveying direction of the peeling film 2b, or may be replaced by a structure not including a rotating shaft.

The material of the drum 25 does not cause rust or the like during the operation of the manufacturing system 100 in the clean room environment, and it is preferable to use smoothness when the drum 25 is processed, and SUS (Steel Use Stainless) or the like can be used.

The drum 25 is assembled along the arc shape of the front end portion 21. That is, when viewed from the rotation axis direction of the drum 25, the outer circumferential surface of the drum 25 is disposed to be externally connected to the outer circumferential surface of the front end portion 21 formed in an arc shape. Since the drum 25 protrudes from the lower surface 22, the peeling film 2b conveyed along the lower surface 22 does not contact the tip end portion 21, and the transport roller 25 is peeled off. Further, since the drum 25 is assembled along the arc shape of the distal end portion 21, the distal end portion 21 does not interfere with the transport of the release film 2b, and the release film 2b is transported. Further, since the peeled release film 2b is conveyed along the upper surface 20, the upper surface can be referred to as a release film transfer surface.

The fourth figure is a plan view showing the blade 7 toward the upper surface 20. In the blade 7, a concave portion (opening portion) is formed at the front end portion 21, and the drum 25 is assembled in the concave portion. The roller 25 has a width W1 formed to be the same as or longer than the width of the release film 2b to contact both end edges of the release film. Specifically, the both end sides are the both end sides in the conveyance direction toward the surface of the lower surface of the peeling film 2b at the time of conveyance of the peeling film 2b.

The end surface of the long release film 2b (the surface which becomes perpendicular to the lower surface 22 at the time of conveyance) is not always correctly along the flow direction (row direction) of the release film 2b, and is usually meandering. However, since the position of the end surface of the release film 2b is adjusted by the position adjusting means not shown, the width W1 may not be set to be wider than that of the release film 2b. More. For example, the width W1 can be set to be larger than the width of the release film 2b by 1 mm or more and 10 mm or less, preferably 2.5 mm or more and 7.5 mm or less.

As described above, the roller 25 for the blade 7 is a roller, but has a length that can contact both end sides of the release film 2b. On the other hand, the blade of the present invention may be provided with at least two rollers as the roller portion. These rollers are separated from each other and arranged along the width direction of the release film 2b. The rotation axes of the respective rollers coincide with each other. Further, these at least two rollers are arranged such that one of the rollers contacts the end of one of the release films 2b, and the other rollers contact the end of the other of the release film 2b. According to this configuration, since the individual rollers contact the both end sides of the release film, the installation area as the entire roller portion can be made small, and the release film can be made difficult to bend.

A blade according to a modification of the present invention is shown in the fifth diagram. The fifth figure is the upper surface 20 to show a plan view of the blade 7a of the present invention. The side view of the blade 7a is the same as the second figure. As shown in the fifth figure, the drum 25a‧25b‧25c‧25d is provided separately along the width direction of the release film 2b. As described above, by providing three or more rollers, the width of the plurality of release films 2b can be matched.

At the blade edge 7a, the peeling film 2b is conveyed to the both ends of the two roll contact peeling film 2b. Therefore, in combination with the width of the release film 2b, the roller combination is used as the roller portion, and the rollers 25a‧25b, 25a‧25c, 25a‧25d, 25b‧25c, 25b‧25d or 25c‧25d can be selected. By various selections, the blade 7a can be adapted to peel films of different widths, and can be used in the manufacture of liquid crystal display devices of different widths. Again, the roller The number of settings is not particularly limited, and may be five, six or more.

Each of the widths W2 of the rollers 25a to 25d is 2 mm or more and 20 mm or less, preferably 5 mm or more and 15 mm or less. By the small width W2, it is possible to provide the blade 7‧17 which is hard to hinder the peeling and conveyance of the peeling film 2b.

The maximum width of the rolls (the distance between the centers of the rolls) preferably coincides with the width of the release film 2b. In the fifth diagram, the width of the release film 2b is 1200 mm, so the width W3 between the drum 25a and the drum 25b is set to 1200 mm. On the other hand, the width W4 between the drum 25b and the drum 25c was set to 300 mm because of the conveyance of the peeling film corresponding to the narrow width.

The sixth drawing is a perspective view showing the blade 7a toward the upper surface 20, showing that the rollers 25a to 25d protrude from the upper surface 20. The same applies to the lower surface 22.

The seventh drawing is a plan view showing a state in which the peeling film 2b is conveyed along the blade edge 7a according to the embodiment of the present invention. As described above, the both end sides of the peeling film 2b are in contact with the roller 25a, the other end of which contacts the roller 25d, and since the release film 2b rotates at the same speed together with the roller 25a‧25d, the peeling film 2b and the peeling film 2b are There is almost no friction between the rollers 25a and 25d. In the seventh diagram, the end of the release film 2b is in contact with the roller by a circle of a broken line.

According to the blade 7a of the present invention, the amount of generation of foreign matter such as film dust which is likely to occur at the tip end portion of the blade can be reduced, and foreign matter is less likely to adhere to the adhesive layer. As a result, the quality of the liquid crystal display device of the final product is difficult to be lowered, and the production yield can be improved.

Further, the present invention is not limited to the above-described embodiments, and various modifications can be made in the scope of the claims. The embodiments obtained by appropriately combining the technical means disclosed in the different embodiments are also included in the technical scope of the present invention.

For example, in the above embodiment, the drum (roller portion) 25 is assembled to the tip end portions of the blades 7, 17. However, even if the drum 25 is not assembled to the tip end portions of the blades 7, 17, only the drum 25 is provided in the vicinity of the bonding mechanism. The same effects as those of the above embodiment can be obtained.

In other words, in the above embodiment, the manufacturing system of the liquid crystal display device includes a bonding mechanism including a transport roller, transporting the liquid crystal panels 1, 1a, and the unwinding portions 3 and 13 to the liquid crystal panel 1. The laminated films 2 and 12 provided with the peeling films 2b and 12b are wound in the conveyance direction of 1a, and the said bonding mechanism is comprised with the said blade|blade 7 and 17.

On the other hand, the manufacturing system of the liquid crystal display device may include the transport roller 10, transport the liquid crystal panels 1, 1a, and the unwinding portions 3 and 13, and roll out the peeling films 2b and 12b in the direction in which the liquid crystal panels 1 and 1a are transported. The laminated film 2, 12; a freely rotatable drum (roller portion) 25, the laminated film 2, 12 is wound, and the peeling films 2b, 12b are peeled off from the laminated film 2, 12; and the winding portions 9, 19 are rolled The portion 25 winds up the release films 2b and 12b which are peeled off from the laminated films 2 and 12. For example, the manufacturing system of the liquid crystal display device has a configuration in which the drum 25 is provided instead of the blade 7 provided with the drum 25 shown in the third figure. In the manufacturing system of the liquid crystal display device, the drum 25 also has the role of the blade 7.

According to this configuration, when the laminated films 2 and 12 are wound around the drum 25 and transported, the drum 25 is rotated by the conveyance of the laminated films 2 and 12. The friction between the drum 25 and the laminated films 2, 12 is reduced, and the generation of foreign matter is suppressed.

Further, in the embodiment of the present invention, the following preferred embodiments are also included.

Preferably, the blade of the present invention has a second surface connected to the front end portion, and the roller portion protrudes from the second surface.

According to this configuration, the release film peeled from the laminated film is conveyed along the second surface of the blade. At this time, since the roller portion assembled at the tip end portion of the blade protrudes from the second surface of the blade, the release film does not contact the second surface in the vicinity of the tip end portion of the blade, and only contacts the roller portion. Therefore, the friction between the blade and the release film when the release film is conveyed is reduced.

In the blade of the present invention, the roller portion is preferably constituted by at least two rollers which are separated from each other.

According to this configuration, the installation area as the entire drum portion becomes small, and the release film can be made difficult to bend. Further, when the roller portion is constituted by three or more rollers that are separated from each other, a blade can be provided, and the roller contacting both ends of the release film can be appropriately selected to correspond to the width of the release film for various uses.

Moreover, the manufacturing system of the liquid crystal display device of the present invention is a manufacturing system of a liquid crystal display device in which a polarizing film is bonded to a liquid crystal panel, and includes a bonding mechanism including a liquid crystal panel transport unit and a liquid crystal panel. And the winding portion that winds up the laminated film including the release film in the direction in which the liquid crystal panel is conveyed, and the bonding mechanism includes the blade.

According to this configuration, since the rotatable drum portion is assembled to the tip end portion of the blade, when the laminated film is wound around the tip end portion of the blade, The friction between the blade and the laminated film is reduced, and the generation of foreign matter is suppressed.

Moreover, in the manufacturing system of the liquid crystal display device which bonded the polarizing film in the liquid crystal panel, the manufacturing system of the liquid crystal display device of this invention has the liquid-crystal panel conveyance part, and conveys a liquid crystal panel, and a winding-out part and the conveyance direction of a liquid-crystal panel. The laminated film including the release film is wound up; the rollable portion is rotatably wound, the laminated film is wound, and the release film is peeled off from the laminated film; and the winding portion is wound up so that the roll portion is peeled off from the laminated film The aforementioned release film.

According to this configuration, when the laminated film is wound around the drum portion and conveyed, the roller portion is rotated by the conveyance of the laminated film, so that the friction between the roller portion and the laminated film is reduced, and the generation of foreign matter is suppressed.

[Industry Utilization]

The blade of the present invention can be utilized in the field of bonding an optical film to a liquid crystal panel.

1, 1a‧‧‧ LCD panel

2, 12‧‧‧ laminated film

2a, 12a‧‧‧ polarizing film

2b, 12b‧‧‧ peeling film

3, 13 ‧ ‧ roll out

4, 14‧‧‧ guide roller

5, 15‧‧‧ half cutter

6, 16‧‧‧ support desk

7, 7a, 17‧ ‧ cutting edge

8a, 8b, 18a, 18b‧‧‧ clamping drum

9, 19‧‧‧Winding Department

10‧‧‧Transport roller (liquid crystal panel transport unit)

11‧‧‧Reversal Department

20‧‧‧Upper surface (second side)

21‧‧‧ front end

22‧‧‧ lower surface (first side)

23‧‧‧ Backend

24a‧24b‧‧‧ side

25‧25a‧25b‧25c‧25d‧‧‧Roller (roller section)

100‧‧‧ Manufacturing System

A‧‧‧Central Corner

D1‧‧‧Transfer direction

W1, W2, W3, W4‧‧‧ width

First drawing: A side view showing a manufacturing system of a liquid crystal display device according to an embodiment of the present invention.

Fig. 2 is a side view showing a blade according to an embodiment of the present invention.

Fig. 3 is a side view showing the angle of the tip end portion of the blade according to the embodiment of the present invention.

Fourth Figure: The upper surface shows a plan view of a blade relating to an embodiment of the present invention.

Fifth Figure: The upper surface shows a plan view of a blade relating to a modification of the present invention.

Sixth Graph: The upward surface shows a perspective view of a blade according to an embodiment of the present invention.

Fig. 7 is a plan view showing a state in which the peeling film is conveyed along the blade according to the embodiment of the present invention.

2‧‧‧Laminated film

2a‧‧‧ polarizing film

2b‧‧‧ peeling film

21‧‧‧ front end

25‧‧‧Roller

A‧‧‧Central Corner

Claims (5)

A blade that peels off the peeling film from a laminated film including a release film, and includes: a first surface facing the conveyed laminated film; and a front end portion connected to the first surface, and the front end portion is assembled a roller portion that can be freely rotated, and the roller portion protrudes from the first surface, and when viewed from a rotation axis direction of the roller, an outer circumferential surface of the roller is disposed to be externally connected to the front end portion formed in an arc shape The outer perimeter. The blade according to claim 1, comprising: a second surface connected to the front end portion, wherein the roller portion protrudes from the second surface. The blade according to claim 1 or 2, wherein the roller portion is constituted by at least two rollers that are separated from each other. The blade according to claim 3, wherein the roller portion is composed of three or more rollers that are separated from each other. A manufacturing system of a liquid crystal display device, which has a polarizing film bonded to a liquid crystal panel, and includes a bonding mechanism including a liquid crystal panel transfer unit and a liquid crystal panel, and a winding portion for cascading a release film in a direction in which the liquid crystal panel is transported. The film is wound up, and the above-mentioned bonding mechanism includes the blade according to any one of claims 1 to 4.