WO2012147793A1 - ナイフエッジおよびこれを含む液晶表示装置の製造システム - Google Patents

ナイフエッジおよびこれを含む液晶表示装置の製造システム Download PDF

Info

Publication number
WO2012147793A1
WO2012147793A1 PCT/JP2012/061089 JP2012061089W WO2012147793A1 WO 2012147793 A1 WO2012147793 A1 WO 2012147793A1 JP 2012061089 W JP2012061089 W JP 2012061089W WO 2012147793 A1 WO2012147793 A1 WO 2012147793A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
knife edge
liquid crystal
release film
tip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2012/061089
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
伸 及川
和範 岸▲崎▼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to KR1020137028736A priority Critical patent/KR101865439B1/ko
Priority to CN201280020143.8A priority patent/CN103492936B/zh
Publication of WO2012147793A1 publication Critical patent/WO2012147793A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0046—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by constructional aspects of the apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/10—Removing layers, or parts of layers, mechanically or chemically
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B32B2457/202—LCD, i.e. liquid crystal displays
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs

Definitions

  • the present invention relates to a knife edge and a liquid crystal display manufacturing system including the knife edge.
  • liquid crystal displays LCD
  • polarizing films are bonded to both surfaces of the liquid crystal panel in order to control light transmission or blocking.
  • the polarizing film In the roll-to-panel method, the polarizing film is transported to the location where it is bonded to the liquid crystal panel, but the polarizing film's bonding surface has an adhesive layer so that dust and other foreign matter do not adhere to the polarizing film's bonding surface. It is protected by a release film (protective film). That is, a polarizing film is conveyed in the state of the laminated film provided with the peeling film.
  • Patent Document 1 discloses that a release film is peeled off by wrapping a release film around a knife edge and transferring it in reverse.
  • the present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a knife edge in which foreign matters such as film scraps are hardly generated, and to improve production yield.
  • the inventor according to the present invention diligently studied the cause of the generation of foreign matter when a knife edge is used, and found that there is a cause in contact between the end face of the release film and the knife edge. That is, the release film is slit according to the width of the polarizing film, and the end face of the release film is not a smooth cross section but is deformed. It has been clarified that the contact between the end surface and the tip of the curved knife edge causes friction on the contact surface, and foreign matters such as film scraps are generated from the deformed end surface. Based on this knowledge, the inventors have completed the present invention.
  • the knife edge according to the present invention presses the release film out of the laminated film being conveyed at the knife edge for peeling the release film from the laminate film provided with the release film.
  • a pressing surface and a tip portion connected to the pressing surface are provided, and at the tip portion, at least two concave portions are formed in parallel to a direction from the pressing surface toward the tip portion.
  • a peeling film can be conveyed so that the both end surfaces of a peeling film are arrange
  • the release film is peeled from the laminated film by being transported to the tip while the release film is pressed against the pressing surface.
  • the said recessed part is formed in the front-end
  • the knife edge of the present invention includes a pressing surface to which the release film is pressed among the laminated films being conveyed, and a tip portion connected to the pressing surface. In the tip portion, from the pressing surface. At least two recesses are formed in parallel to the direction toward the tip.
  • the concave portion is formed at the tip portion, and both ends of the release film do not come into contact with the tip portion when the release film is peeled off at the tip portion. For this reason, since the generation amount of foreign matters such as film scraps that have been easily generated at the tip portion can be reduced conventionally, the foreign matters are less likely to adhere to the adhesive layer. As a result, the quality of the liquid crystal display device, which is the final product, is hardly lowered, and the production yield can be improved.
  • FIG. 1 It is a side view which shows the manufacturing system of the liquid crystal display device which concerns on embodiment of this invention.
  • (A) is a side view which shows the knife edge which concerns on embodiment of this invention
  • (b) is a side view which shows the angle of the front-end
  • FIG. 1 It is a top view which shows the state by which the peeling film was conveyed along the knife edge which concerns on embodiment of this invention.
  • A is a perspective view which shows the knife edge which concerns on embodiment of this invention from an upper surface side
  • (b) is a top view which shows the knife edge which concerns on embodiment of this invention from a front-end
  • FIG. 1 is a side view showing a manufacturing system (liquid crystal display device manufacturing system) 100 according to the present embodiment.
  • the manufacturing system 100 bonds the polarizing film 2 a to both surfaces of the liquid crystal panel 1.
  • a transport direction D ⁇ b> 1 in FIG. 1 indicates the transport direction of the liquid crystal panel 1 in the manufacturing system 100.
  • the manufacturing system 100 includes an unwinding section 3, a guide roller 4, a half cutter 5, a support base 6, a knife edge 7, nip rollers 8a and 8b, and a winding section 9 ("nip rollers 8a and 8b" are “nip rollers 8a”). And nip roller 8b ".
  • a transport roller (liquid crystal panel transport unit) 10 and a reversing unit 11 are provided, and an unwinding unit 13, a guide roller 14, a half cutter 15, a support base 16, a knife edge 17, nip rollers 18a and 18b, and a winding unit 19 are provided. It has.
  • the unwinding unit 3 unwinds the polarizing film in the transport direction of the liquid crystal panel 1, and in FIG. 1, the unwinding unit 3 unwinds the laminated film 2 in which the release film 2b is laminated on the polarizing film 2a. It has become.
  • the unwinding unit 3 has a structure that moves in a horizontal direction with respect to the axis of the raw roll of the laminated film 2. The movement is performed by a slide mechanism installed at the lower part of the unwinding unit 3.
  • a conventionally known turret type unwinding section may be used as the unwinding section 3.
  • the laminated film 2 is sent out through the guide roller 4.
  • what is necessary is just to adjust the speed
  • What is necessary is just to change suitably the size of the unwinding part 3 with the size of the laminated
  • an unwinding portion 3 having a size capable of installing the laminated film 2 having a film width of 300 mm or more and 1200 mm or less may be used.
  • the laminated film 2 has a three-layer structure, and a known structure can be adopted.
  • the laminated film 2 includes a polarizing film 2a, an adhesive layer (not shown), and a release film 2b.
  • the following configuration can be given. That is, a TAC (triacetyl cellulose) film or the like is bonded as a protective film on both surfaces of the polarizer film, and an adhesive layer is applied (laminated) to one or both TAC films, and the release film 2b is applied to the adhesive layer.
  • a TAC triacetyl cellulose
  • polarizer film a polyvinyl alcohol film dyed with iodine or the like and a film stretched in a uniaxial direction can be used. Also, in place of the above films, partially formalized polyvinyl alcohol film, ethylene / vinyl acetate copolymer partially saponified film, hydrophilic polymer film such as cellulose film, etc., dehydrated polyvinyl alcohol and polyvinyl chloride A polyene-oriented film such as a dehydrochlorinated product can also be used.
  • the total thickness of the polarizing film 2a pressure-sensitive adhesive layer and the release film 2b is not particularly limited, but can be 100 ⁇ m or more and 500 ⁇ m or less as an example.
  • the thickness of the polarizer film in the polarizing film 2a is generally 10 ⁇ m or more and 50 ⁇ m or less.
  • the laminated film 2 may further contain other layers in addition to the above three layers within a practical range.
  • the adhesive layer is used to bond the polarizing film 2a and the liquid crystal panel 1 after the release film 2b is removed.
  • the pressure-sensitive adhesive used for the pressure-sensitive adhesive layer is not particularly limited, and an acrylic, epoxy, polyurethane-based pressure-sensitive adhesive can be used, but it needs to be easily peeled from the release film 2b. For this reason, the kind of adhesive is selected according to the peeling film 2b.
  • the thickness of an adhesive layer suitably, for example, they can be 0.5 micrometer or more and 75 micrometers or less.
  • a known release film may be used as the release film 2b.
  • a polyester film, a polyethylene terephthalate film, or the like can be used.
  • the peeling film of 5 micrometers or more and 100 micrometers or less can be used preferably.
  • variety of a peeling film can be 300 mm or more and 1200 mm or less.
  • the release film 2b may be generally referred to as a protective film or a separator.
  • the laminated film 2 is conveyed through each guide roller 4, but since the liquid crystal panel 1 is in a sheet form, it is necessary to cut the long polarizing film 2a and the adhesive layer before bonding. That is, the laminated film 2 needs to be half cut.
  • the members for performing the half cut are the half cutter 5 and the support base 6.
  • the support base 6 is disposed at a position in contact with the release film 2b and is installed to prevent the laminated film 2 from being shaken.
  • the polarizing film 2a and the adhesive layer are cut by the half cutter 5 while the release 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 knife edge 7 is a member for removing the release film 2b from the laminated film 2.
  • a material constituting the knife edge 7 a metal material, a resin material, or the like can be applied. Although not particularly limited, stainless steel, aluminum, a resin material, and the like are recommended from the viewpoint of corrosion resistance. The knife edge 7 will be described later with reference to FIGS.
  • the manufacturing system 100 includes a position adjusting device that adjusts the transport position of the laminated film 2 in the width direction, and the laminated films 2 and 12 (release film) conveyed along the knife edges 7 and 17. 2b) can be adjusted. Even if the end surface of the laminated film 2 meanders by the position adjusting device, the position of the laminated film 2 can be adjusted to an appropriate transport position.
  • the reason for installing the position adjusting device is that the laminated film 2 is usually slit to a short width, and the end surface of the laminated film 2 is usually not flat (meandering) in the slitting process.
  • the position adjusting device includes a camera for confirming the positions of the end faces of the laminated film 2 and the release film 2b and a guide roller adjusting device for adjusting the position of the guide roller 4.
  • the liquid crystal panel 1 is conveyed between the nip rollers 8a and 8b for bonding with the polarizing film 2a.
  • liquid crystal panel 1 a known liquid crystal panel can be used.
  • 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 only needs to be able to transport the liquid crystal panel, and another configuration such as a robot arm may be used instead of the transport roller 10.
  • the nip rollers 8a and 8b are members for bonding the polarizing film 2a and the liquid crystal panel 1.
  • the lower nip roller 8 b is disposed at the same height as the transport roller 10.
  • 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 through an adhesive layer (not shown) by the nip rollers 8a and 8b.
  • the distance between the nip rollers 8a and 8b can be changed, and bonding is performed by pressure bonding the adhesive layer surface of the polarizing film 2a and the liquid crystal panel 1. What is necessary is just to adjust suitably the pressure and temperature (heater temperature in a nip roller) of the nip roller 8a * 8b at the time of bonding according to the kind of adhesive, the thickness of the polarizing film 2a, etc.
  • the liquid crystal panel 1 having the polarizing film 2a bonded to the lower surface is reversed so that the reverse side 11 changes the front and back, and the short side along the transport direction becomes the long side.
  • the liquid crystal panel inverted by the inversion unit 11 is shown as a liquid crystal panel 1a.
  • a robot arm is employed as the reversing unit 11.
  • the manufacturing system 100 is not particularly limited as long as the front and back sides of the liquid crystal panel 1 and sides along the transport direction can be changed.
  • the polarizing film 12a is arranged so that the absorption axis of the polarizing film 12a is orthogonal to the absorption axis of the polarizing film 2a on the lower surface of the liquid crystal panel 1 (the polarizing film is not bonded). Can be pasted.
  • the long side of the liquid crystal panel 1 may be transported along the transport direction.
  • the short side of the liquid crystal panel 1a after being reversed by the reversing unit 11 is transported along the transport direction. Will be.
  • the liquid crystal panel 1a that is reversed and has the long side along the transport direction D1 is further transported in the transport direction D1 and reaches the nip rollers 18a and 18b.
  • the laminated film 12 is unwound from the unwinding unit 13, and the polarizing film 12 a and the adhesive layer of the laminated film 12 are half-cut by the half cutter 15.
  • the peeling film 12b is peeled from the laminated film 12 by the knife edge 17, and the polarizing film 12a is bonded to the lower surface of the liquid crystal panel 1a through the adhesive layer.
  • the liquid crystal panel 1 a having the polarizing films bonded to both sides corresponds to a liquid crystal display device, and the liquid crystal display device is manufactured by the manufacturing system 100.
  • FIG. 2A is a side view relating to the knife edge 7.
  • FIG. 3 is an end view showing the knife edge 7 near the tip 21 toward the upper surface 20.
  • the knife edge 7 includes an upper surface 20, a tip portion 21, a lower surface (pressing surface) 22, a rear end 23, a side surface 24a, and a side surface 24b (not shown).
  • the peeling film 2b is peeled along the lower surface 22, the front end portion 21 and the upper surface 20, the lower surface 22, the front end portion 21 and the upper surface 20 have a smooth shape. That is, the upper surface 20 and the lower surface 22 have a planar shape, and the distal end portion 21 has a curved shape.
  • FIG. 2B is a side view showing the angle of the tip of the knife edge 7.
  • the tip 21 has an arc shape.
  • the side surface (or cross section) of the front end portion 21 has a fan shape, and the central angle A of the cross section at the front end portion 21 is 155 °. Since the upper surface 20 and the lower surface 22 are formed along the normal line of the distal end portion 21, the upper surface 20 and the lower surface 22 are not horizontal to each other but have an inclination.
  • the arc shape (side surface or cross section) of the distal end portion 21 is not limited to the above-mentioned angle, and may be a sector shape having a central angle A of 30 ° or more and 180 ° or less, for example.
  • the arc shape of the distal end portion 21 is a fan having a central angle A of 45 ° or more and 180 ° or less, more preferably a fan having a central angle A of 90 ° or more and 180 ° or less, particularly preferably a center. It has a fan shape with an angle of 120 ° or more and 180 ° or less.
  • the central angle A When the central angle A is less than 30 °, the distance between the peeled release film 2b and the polarizing film 2a is short, and it becomes difficult to carry them. When the central angle A is 45 ° or more, and further 120 ° or more, the release film 2b and the polarizing film 2a can be transported in different transport directions, and the production system 100 that can easily collect the release film 2b can be provided. . On the other hand, when the central angle A exceeds 180 °, the upper surface 20 cannot be formed along the normal line of the distal end portion 21, and it becomes difficult to design the distal end portion 21 and the upper surface 20 in a smooth structure. .
  • the direction D ⁇ b> 2 is directed from the lower surface 22 to the arc-shaped portion of the tip 21.
  • tip part 21 is located on the surface parallel to the direction D2, or the same surface.
  • the laminated film 2 is conveyed toward the arc-shaped portion of the tip portion 21, and the release film 2 b is peeled along the arc shape of the tip portion 21. Thereby, a peeling film is peeled smoothly.
  • the radius of the tip portion 21 is appropriately changed according to the thickness and hardness of the release film 2b, it is difficult to uniquely define it.
  • the radius of the sector cross section of the tip portion 21 is 1 mm or more. 10 mm or less, preferably 2 mm or more and 5 mm or less. By setting it as said radius, peeling of the peeling film 2b can be made suitably.
  • the lower surface 22 and the tip 21 are smoothly connected and no corners are formed. Moreover, the front-end
  • the smooth shape means a shape formed by at least one of a flat surface and a curved surface.
  • the side surfaces 24a and 24b only need to connect the upper surface 20, the tip portion 21, the lower surface 22 and the rear end 23, and the shape of the side surfaces 24a and 24b is not particularly limited, and may be a flat surface or a curved surface. Further, as a modification of the knife edge 7, a structure including a support member that supports the tip portion 21 and the lower surface 22 in place of the side surfaces 24a and 24b can be cited. If the tip 21 and the lower surface 22 are supported by the support member and the structure of the knife edge is maintained, the knife edge according to the present invention can be configured.
  • the rear end 23 only needs to connect the upper surface 20, the lower surface 22, and the side surfaces 24a and 24b, and the shape of the rear end 23 is not particularly limited. Similar to the side surfaces 24 a and 24 b, the shape may be a flat surface or a curved surface, or may be a support member that supports the upper surface 20 and the lower surface 22 instead of the rear end 23. Further, even if the rear end 23 is not present, the rear end 23 may be omitted as long as the structure of the knife edge 7 including the front end portion 21 and the lower surface 22 can be maintained.
  • FIG. 4 is a perspective view showing the knife edge 7 in the vicinity of the tip 21 from the upper surface 20 side. Furthermore, the shape from the lower surface 22 of the knife edge 7 is shown in FIG.
  • FIG. 5 is an end view showing the knife edge 7 in the vicinity of the tip 21 toward the lower surface 22.
  • FIG. 6 is a perspective view showing the knife edge 7 in the vicinity of the tip 21 from the lower surface 22 side.
  • the knife edge according to the present invention is formed with at least two recesses, and in the knife edge 7 shown in FIGS. 3 to 6, four recesses 25a, 25b, 25c, and 25d are formed as a preferred form. .
  • the release film 2 b provided in the laminated film 2 is conveyed along the lower surface 22.
  • the release film 2 b of the laminated film 2 is conveyed while being pressed against the lower surface 22.
  • conveyance while pressing the release film 2 b against the lower surface 22 can be performed by adjusting the positions of the guide roller 4, the knife edge 7, and the nip roller 8.
  • the release film 2b conveyed while being pressed against the lower surface 22 is separated from the adhesive layer and is conveyed along the tip portion 21.
  • multilayer film 2 is arrange
  • the end face of the long release film 2b is not necessarily along the flow direction (line direction) of the release film 2b, but is usually meandering.
  • both end surfaces of the release film 2b are adjusted so as to pass through any of the recesses 25a to 25d by a position adjusting device (not shown).
  • the width W1 of the recesses 25a to 25d may be small, and may be 2 mm or more and 20 mm or less, preferably 5 mm or more and 15 mm or less. Since the width W1 is small, it is possible to provide knife edges 7 and 17 that are difficult to prevent the peeling and transport of the release film 2b.
  • the recess is formed so that the length connecting the centers of the two recesses is the width of the release film 2b.
  • the transport position of the polarizing film 2a is set so that the trajectory passing through both end faces of the release film 2b overlaps the recesses 25b and 25c.
  • the transport position of the laminated film 2 is set so that the trajectory through which both end faces of the release film 2b pass overlaps the recesses 25a and 25d.
  • the widths W2 and W3 can be set to 300 mm or more and 1200 mm or less. In the knife edge 7, the width W2 is set to 1200 mm, and the width W3 is set to 700 mm.
  • the transport position of the laminated film 2 may be set so that both end faces of the release film 2b pass through the recesses 25a and 25b.
  • the distance between the centers of the recesses 25a and 25b in the width direction of the release film 2b is set to 300 mm.
  • multilayer film 2 may be set so that the both end surfaces of the peeling film 2b may pass the recessed part 25a * 25c.
  • FIG. 7 is a plan view showing a state in which the peeled release film 2 b is conveyed along the knife edge 7.
  • the end surface (edge) of the release film 2b peeled off at the tip 21 does not come into contact with the tip 21 because the recesses 25a and 25d are formed.
  • the generation amount of foreign matters such as film scraps that have been easily generated at the tip portion can be reduced conventionally, the foreign matters are less likely to adhere to the adhesive layer.
  • the quality of the liquid crystal display device which is the final product is hardly deteriorated, and the production yield can be improved.
  • the knife edge 7 has not only the tip portion 21 but also the lower surface 22 with a recess 25 a parallel to the direction D ⁇ b> 2 from the lower surface 22 toward the tip portion 21.
  • To 25d are formed.
  • the recesses 25a to 25d in the distal end portion 21 and the recesses 25a to 25d in the lower surface 22 are connected to each other, and a series of recesses 25a to 25d are formed from the lower surface 22 to the distal end portion 21.
  • the tip portion 21 When the end surface of the release film 2b and the knife edge 7 are in contact with each other, a portion where foreign matters such as film scraps are mainly generated is the tip portion 21. Since the recesses 25a to 25d are formed in the lower surface 22 in addition to the tip portion 21, the release film 2b can be transported so that the end surface of the release film 2b and the lower surface 22 do not contact with each other on the lower surface 22. . As a result, foreign matters such as film waste can be further prevented from being generated.
  • FIG. 8A is a perspective view showing the knife edge 7a from the upper surface 20 side
  • FIG. 8B is a plan view showing the knife edge 7a from the distal end portion 21 side.
  • the knife edge 7a is formed with four openings connected to the recesses 25a to 25d, and the four openings are provided with suction mechanisms 26a to 26d, respectively.
  • the opening is formed to face the release film 2b passing through the tip 21.
  • the size of the opening formation region and the suction mechanisms 26a to 26d are the same, but each of the openings only needs to be able to arrange the suction mechanisms 26a to 26d.
  • the region may be designed to be larger than the size of the suction mechanisms 26a to 26d.
  • the opening may be formed at the tip 21 because the opening does not hinder the conveyance of the peeling film 2b. Arranged along the direction).
  • the suction mechanism is disposed perpendicular to the conveyance direction of the release film 2b.
  • the suction mechanisms 26a to 26d suck air such as film scraps by sucking air.
  • a known suction mechanism can be used, and for example, a suction mechanism such as a vacuum suction type can be used.
  • the suction mechanisms are installed at four locations, but may not be installed at all the concave portions, and may be installed at at least one location.
  • FIG. 9 is a plan view showing a state in which the peeled release film 2b is conveyed along the knife edge 7a.
  • the end faces of the release film 2b and the tip 21 are not in contact with each other because the recesses 25a and 25d are formed.
  • foreign matters such as film scraps have already adhered to the release film 2b due to contact with the lower surface 22 or the guide roller 4.
  • Such a foreign substance can be scattered when the conveyance direction of the release film 2b is greatly curved at the tip portion 21.
  • the suction mechanisms 26a to 26d are provided, the foreign matter generated before reaching the tip portion 21 is sucked, and scattering of the foreign matter around the tip portion 21 is suppressed. Thereby, it can further suppress that a foreign material adheres to the adhesion layer of a polarizing film. As a result, the yield of the liquid crystal display device can be improved.
  • the present invention includes the following forms.
  • the knife edge according to the present invention has three or more concave portions formed in parallel to the direction at the tip portion.
  • the knife edge according to the present invention has a recess formed in the pressing surface in parallel to the direction.
  • the tip portion has an arc shape and is directed from the pressing surface toward the arc-shaped portion of the tip portion.
  • the knife edge according to the present invention is preferably provided with an opening connected to the concave portion at the tip, and a suction mechanism for sucking foreign matter in the opening.
  • the foreign matter generated during the conveyance of the release film before reaching the tip portion is sucked around the tip portion, and scattering of the foreign matter around the tip portion is suppressed. Thereby, it can further suppress that a foreign material adheres to the adhesion layer of a polarizing film.
  • the liquid crystal display device manufacturing system is a liquid crystal display device manufacturing system in which a polarizing film is bonded to a liquid crystal panel.
  • multilayer film provided with is provided, and the said bonding mechanism contains the said knife edge.
  • the knife edge according to the present invention can be used in the field of bonding an optical film to a liquid crystal panel.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polarising Elements (AREA)
PCT/JP2012/061089 2011-04-28 2012-04-25 ナイフエッジおよびこれを含む液晶表示装置の製造システム Ceased WO2012147793A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020137028736A KR101865439B1 (ko) 2011-04-28 2012-04-25 나이프 엣지 및 이것을 포함하는 액정 표시 장치의 제조 시스템
CN201280020143.8A CN103492936B (zh) 2011-04-28 2012-04-25 刀刃以及包含该刀刃的液晶显示装置的制造系统

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-101807 2011-04-28
JP2011101807A JP5356449B2 (ja) 2011-04-28 2011-04-28 ナイフエッジおよびこれを含む液晶表示装置の製造システム

Publications (1)

Publication Number Publication Date
WO2012147793A1 true WO2012147793A1 (ja) 2012-11-01

Family

ID=47072311

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/061089 Ceased WO2012147793A1 (ja) 2011-04-28 2012-04-25 ナイフエッジおよびこれを含む液晶表示装置の製造システム

Country Status (5)

Country Link
JP (1) JP5356449B2 (enExample)
KR (1) KR101865439B1 (enExample)
CN (1) CN103492936B (enExample)
TW (1) TWI558527B (enExample)
WO (1) WO2012147793A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015034960A (ja) * 2012-11-16 2015-02-19 日東電工株式会社 偏光板の製造方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6258622B2 (ja) * 2013-07-26 2018-01-10 日東電工株式会社 フィルム積層体からの異物除去方法、フィルム積層体の製造方法及び製造装置。
JP6258736B2 (ja) * 2013-09-13 2018-01-10 日東電工株式会社 剥離用部材、剥離装置及び剥離方法
KR102024905B1 (ko) * 2015-11-19 2019-09-24 주식회사 엘지화학 디스플레이 모듈 제조 장치
JP6383849B2 (ja) * 2017-09-01 2018-08-29 日東電工株式会社 フィルム積層体の製造方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005037416A (ja) * 2003-05-16 2005-02-10 Fuji Photo Film Co Ltd 偏光板貼合方法及び装置
JP2008149423A (ja) * 2006-12-19 2008-07-03 Sharp Corp 刃物及び剥離装置
WO2009072467A1 (ja) * 2007-12-03 2009-06-11 Nitto Denko Corporation 積層光学製品、光学表示装置および光学表示装置の製造方法
WO2009125771A1 (ja) * 2008-04-08 2009-10-15 日東電工株式会社 光学表示装置の製造システム、光学表示装置の製造方法、排除装置および排除方法
JP2010026314A (ja) * 2008-07-22 2010-02-04 Nitto Denko Corp 光学表示ユニットの製造方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10329969A (ja) * 1997-05-29 1998-12-15 Nec Corp 搬送機構
KR20040002796A (ko) * 2002-06-28 2004-01-07 후지 샤신 필름 가부시기가이샤 편광판 점착방법 및 그 장치
JP4307510B1 (ja) 2007-12-27 2009-08-05 日東電工株式会社 光学表示装置の製造システム及び製造方法
JP2010179276A (ja) * 2009-02-09 2010-08-19 Konica Minolta Opto Inc フィルム表面の異物除去装置及びフィルムの製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005037416A (ja) * 2003-05-16 2005-02-10 Fuji Photo Film Co Ltd 偏光板貼合方法及び装置
JP2008149423A (ja) * 2006-12-19 2008-07-03 Sharp Corp 刃物及び剥離装置
WO2009072467A1 (ja) * 2007-12-03 2009-06-11 Nitto Denko Corporation 積層光学製品、光学表示装置および光学表示装置の製造方法
WO2009125771A1 (ja) * 2008-04-08 2009-10-15 日東電工株式会社 光学表示装置の製造システム、光学表示装置の製造方法、排除装置および排除方法
JP2010026314A (ja) * 2008-07-22 2010-02-04 Nitto Denko Corp 光学表示ユニットの製造方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015034960A (ja) * 2012-11-16 2015-02-19 日東電工株式会社 偏光板の製造方法
JP2016167075A (ja) * 2012-11-16 2016-09-15 日東電工株式会社 偏光板の製造方法
TWI609774B (zh) * 2012-11-16 2018-01-01 日東電工股份有限公司 偏光板之製造方法及偏光板

Also Published As

Publication number Publication date
KR20140019425A (ko) 2014-02-14
KR101865439B1 (ko) 2018-06-07
CN103492936A (zh) 2014-01-01
JP5356449B2 (ja) 2013-12-04
CN103492936B (zh) 2015-10-21
TW201247380A (en) 2012-12-01
TWI558527B (zh) 2016-11-21
JP2012234014A (ja) 2012-11-29

Similar Documents

Publication Publication Date Title
JP5185313B2 (ja) 剥離方法および剥離装置
JP5868734B2 (ja) 光学表示パネルの連続製造方法および光学表示パネルの連続製造システム
KR101070283B1 (ko) 광학표시장치의 제조시스템 및 당해 광학표시장치의 제조방법
CN109385222B (zh) 带粘合剂光学薄膜的制造方法
JP4750227B1 (ja) 液晶表示素子の連続製造システムおよび液晶表示素子の連続製造方法
JP5613587B2 (ja) 液晶表示装置の製造方法
JP5356449B2 (ja) ナイフエッジおよびこれを含む液晶表示装置の製造システム
CN103373489A (zh) 光学显示面板的连续制造方法及其连续制造系统
CN103576363A (zh) 光学显示面板的制造方法和光学显示面板的制造系统
JP4734515B1 (ja) 光学表示装置の製造システムおよび当該光学表示装置の製造方法
WO2013133261A1 (ja) 光学表示パネルの連続製造方法および光学表示パネルの連続製造システム
US10429678B2 (en) Panel reversing apparatus, and system and method of manufacturing optical display element
JP5345233B2 (ja) ナイフエッジおよびこれを含む液晶表示装置の製造システム
KR101885943B1 (ko) 광학 표시 장치의 제조 시스템 및 광학 표시 장치의 제조 방법
JP2011227336A (ja) 貼合装置
JP2014130286A (ja) 光学表示装置の製造システム
JP5969247B2 (ja) 光学表示パネルの連続製造方法およびその連続製造システム、切替方法および繰出装置
JP2014137577A (ja) 光学表示装置の製造システム

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12776413

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 20137028736

Country of ref document: KR

Kind code of ref document: A

122 Ep: pct application non-entry in european phase

Ref document number: 12776413

Country of ref document: EP

Kind code of ref document: A1