WO2012029592A1 - 光学機能フィルム、及びこれを用いた液晶表示装置の製造方法 - Google Patents
光学機能フィルム、及びこれを用いた液晶表示装置の製造方法 Download PDFInfo
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- WO2012029592A1 WO2012029592A1 PCT/JP2011/068959 JP2011068959W WO2012029592A1 WO 2012029592 A1 WO2012029592 A1 WO 2012029592A1 JP 2011068959 W JP2011068959 W JP 2011068959W WO 2012029592 A1 WO2012029592 A1 WO 2012029592A1
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- film
- optical functional
- functional film
- carrier film
- liquid crystal
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- 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
- B32B37/0007—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality
- B32B37/003—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality to avoid air inclusion
-
- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
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- 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
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
-
- 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
-
- 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
- B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
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- 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
- G02F1/133528—Polarisers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/14—Layer or component removable to expose adhesive
Definitions
- the present invention leaves the carrier film from the band-shaped optical functional film on which the carrier film is stuck, cuts the optical functional film at a predetermined interval, and then reverses the carrier film with an edge-shaped member while peeling the optical functional film.
- the present invention relates to a belt-like optical functional film used for bonding an exposed surface of an optical functional film to a sheet, and a method of manufacturing an optical display device using the same.
- a continuous roll wound with a strip-shaped product having an optical functional film is delivered to a liquid crystal display element processing manufacturer, and roll supply, defect inspection, cutting processing, bonding to a liquid crystal display device, etc. are performed in a series of steps.
- the manufacturing method to perform is proposed (for example, patent document 1 etc.).
- the optical functional film is cut at a predetermined interval (so-called half cut) from the belt-shaped optical functional film on which the carrier film is stuck, and then the carrier film is inverted by an edge-shaped member. Then, the optical function film and the liquid crystal panel are passed between rolls while peeling the optical function film so that the exposed surface of the optical function film is bonded to the liquid crystal panel.
- the above laminating method has a problem that when the optical functional film and the liquid crystal panel are bonded to each other by passing between rolls, bubbles are easily generated at the interface, which becomes a defect of the product. For this reason, it was necessary to establish a technique for bonding without bubbles during bonding.
- the carrier film may be cut or a notch may be generated in the carrier film, and the carrier film may be broken starting from the notch due to the tension during transportation. Due to these phenomena, there has been a problem that the yield and production efficiency of the product are lowered.
- an object of the present invention is to provide an optical functional film that can effectively prevent the generation of bubbles at the time of bonding, and preferably does not easily cause breakage of a carrier film, and a method of manufacturing a liquid crystal display device using the same. There is.
- the present inventors have elucidated the mechanism of bubble generation, and based on this finding, the bending rigidity per unit length in the longitudinal direction of the carrier film and the longitudinal direction
- the present inventors have found that the above object can be achieved by setting the longitudinal elastic modulus in a specific range, and have completed the present invention.
- the optical functional film of the present invention is obtained by cutting the optical functional film at a predetermined interval while leaving the carrier film from the band-shaped optical functional film on which the carrier film is pasted, and then inverting the carrier film with an edge-shaped member.
- the carrier film has a flexural rigidity per unit length in the longitudinal direction of 5.0 ⁇ 10 ⁇ 5 N ⁇ mm 2 or more and 8.0 ⁇ 10 ⁇ 2 Nmm 2 or less and a longitudinal elastic modulus of 3000 MPa or more in the longitudinal direction. It is 5000 MPa or less.
- the physical properties are values measured by the methods of the examples.
- the bending rigidity per unit length in the longitudinal direction of the carrier film and the longitudinal elastic modulus in the longitudinal direction are within the above ranges, thereby effectively generating bubbles at the time of bonding. Can be prevented.
- the bubble generation mechanism estimated by the present inventors is as follows.
- the optical functional film When affixing the exposed surface of the optical functional film to a single wafer (for example, a liquid crystal panel) while reversing the optical functional film (for example, a polarizing film) by inverting the carrier film with an edge-shaped member, Since acceleration / deceleration occurs, fluctuations in tension occur in the optical functional film. As a result, as shown in FIG. 5, the optical functional film immediately before sticking vibrates, and the vibration easily causes a float between the carrier film and the edge member. As shown in FIG. 5, the higher the bending rigidity of the carrier film, the more difficult it is to bend, so that the carrier film floats from the edge-shaped member and the carrier film becomes unstable.
- the carrier film and the optical functional film are likely to be wrinkled or scarred at the time of bonding, and bubbles are likely to be generated due to the influence.
- the bending rigidity per unit length in the longitudinal direction which is an index representing the difficulty of bending of the carrier film, is 5.0 ⁇ 10 ⁇ 5 N ⁇ mm 2 or more and 8.0 ⁇ 10 ⁇ 2 Nmm 2 or less. If so, the carrier film is less likely to float and can be bonded without generating bubbles.
- the longitudinal elastic modulus of the carrier film is less than 3000 MPa
- the carrier film is easily stretched, and peeling is likely to occur between the pressure-sensitive adhesive and the carrier film during conveyance at the half-cut portion. This peeling causes sticking bubbles.
- the longitudinal elastic modulus exceeds 5000 MPa, the film is hard and is easily torn starting from a notch generated at the time of half-cutting, so that breakage is likely to occur, and meandering is likely to occur during film conveyance.
- the thickness of the carrier film is preferably 10 ⁇ m or more and 60 ⁇ m or less.
- the thickness of the carrier film is thick, peeling is likely to occur between the carrier film and the optical function film (adhesive) at the half-cut portion in the transport process after the half-cut. For this reason, at the time of peeling by the edge-shaped member, the peeling force is different between the part with peeling and the part without peeling, so that vibration and deflection of the film occur at the time of bonding, which is one of the causes of bubble generation. Therefore, the thickness of the carrier film is preferably 60 ⁇ m or less. Moreover, it is preferable that the thickness of a carrier film is 10 micrometers or more from a viewpoint of bonding an optical function film at the time of a half cut and the conveyance after a half cut without the fracture
- the belt-like optical functional film is wound in a roll shape.
- the optical functional film can be continuously bonded while feeding the belt-shaped optical functional film from the roll-shaped wound body. It is also suitable as a supply form of optical functional film products.
- the manufacturing method of the liquid crystal display device includes a step of cutting the optical functional film at a predetermined interval, leaving the carrier film from the band-shaped optical functional film on which the carrier film is pasted, and an edge-shaped member.
- the carrier film has a flexural rigidity per unit length in the longitudinal direction of 5.0 ⁇ 10 ⁇ 5 N ⁇ mm 2 or more and 8.0 ⁇ 10 ⁇ 2 Nmm 2 or less and a longitudinal elastic modulus of 3000 MPa or more in the longitudinal direction. It is 5000 MPa or less.
- E the longitudinal elastic modulus [N / mm 2 ] of the optical functional film
- I the cross-sectional secondary moment per unit length
- I b ⁇ h 3/12 (where, b: unit length (1 mm), h: film thickness [mm]) is a).
- the belt-like optical functional film is drawn out from a roll-shaped wound body.
- the optical functional film can be continuously bonded to the liquid crystal panel while the belt-shaped optical functional film is fed out from the wound body. It is also suitable as a supply form of optical functional film products.
- the optical functional film of the present invention is obtained by cutting the optical functional film at a predetermined interval while leaving the carrier film from the band-shaped optical functional film on which the carrier film is attached, and then inverting the carrier film with an edge-shaped member.
- the sheet body to be bonded can be a sheet body other than the liquid crystal panel. Examples of such single wafers include other optical functional films and display panels such as plasma display panels, organic EL panels, TFT substrates, and printed boards.
- the method for producing a liquid crystal display device includes a step of cutting the optical functional film at a predetermined interval, leaving the carrier film from the band-shaped optical functional film on which the carrier film is pasted, and inverting the carrier film with an edge-shaped member. And attaching the exposed surface of the optical functional film to the liquid crystal panel while peeling the optical functional film.
- the manufacturing method of the liquid crystal display device of the present invention can be carried out as part of a series of steps as shown in FIG.
- a main process it includes a cutting process of a band-shaped optical functional film, and a bonding process of continuously bonding a sheet piece of the optical functional film after cutting to a liquid crystal panel, and further, a continuous roll preparation process
- a cutting process of a band-shaped optical functional film and a bonding process of continuously bonding a sheet piece of the optical functional film after cutting to a liquid crystal panel
- a continuous roll preparation process The example in the case of providing a conveyance process and an inspection process is shown.
- each process is demonstrated based on FIG.
- First continuous roll preparation step (FIG. 1, S1).
- a wound body including a band shape is prepared as a first continuous roll.
- the width of the first continuous roll depends on the bonding size of the liquid crystal panel.
- the belt-shaped optical functional film wound as the first continuous roll is obtained by, for example, laminating an adhesive layer and a carrier film temporarily attached to the adhesive layer on an optical functional film including a polarizer.
- the laminated structure of the first sheet-like material F1 including a belt-like optical functional film has a first optical functional film F11, a first carrier film F12, and a surface protective film F13.
- the first optical functional film F11 includes a first polarizer F11a, a first film F11b having an adhesive layer (not shown) on one side thereof, and a second film having an adhesive layer (not shown) on the other side. It is comprised with the film F11c.
- the first and second films F11b and F11c are, for example, protective films (for example, triacetyl cellulose film, PET film, etc.).
- the second film F11c is bonded to the liquid crystal panel surface side via the first adhesive layer F14.
- a surface treatment can be applied to the first film F11b. Examples of the surface treatment include a hard coat treatment, an antireflection treatment, a treatment for the purpose of prevention of sticking, diffusion or antiglare, and the like.
- the first carrier film F12 is provided via the second film F11c and the first adhesive layer F14.
- the surface protective film F13 is provided via the first film F11b and the adhesive layer F15.
- a laminated structure of a polarizer and a protective film may be referred to as a polarizing film.
- the first sheet-like material is fed out from the first continuous roll prepared and installed, and is conveyed downstream.
- the first transport device that transports the first sheet-like material includes, for example, a nip roller pair, a tension roller, a rotation drive device, an accumulation device, a sensor device, a control device, and the like.
- the first sheet-like material has a first carrier film, which functions as a carrier film.
- a defect of the first sheet is inspected using a first defect inspection apparatus.
- a defect inspection method for both sides of the first sheet-like material, a method of taking an image and processing an image by transmitted light and reflected light, an inspection optical function film between the CCD camera and the inspection object, A method for taking an image and processing an image by arranging it so as to be in crossed Nicols with a polarization axis of a polarizing film to be inspected (sometimes referred to as 0 degree cross), an inspection optical functional film with a CCD camera and an inspection object Between the polarizing axis of the polarizing film to be inspected and a predetermined angle (for example, a range of greater than 0 degrees and within 10 degrees) (sometimes referred to as x-degree crossing).
- the method of processing is mentioned. Note that a known method can be applied to the image processing algorithm, and for example, a defect can be detected by density determination by binarization processing.
- the image capturing / image processing method using transmitted light foreign matter inside the first sheet can be detected.
- the adhered foreign matter on the surface of the first sheet-like object can be detected.
- the image photographing / image processing method using the 0-degree cross mainly surface foreign matter, dirt, internal foreign matter, etc. can be detected as bright spots.
- a nick can be mainly detected.
- the defect information obtained by the first defect inspection apparatus is linked with the position information (for example, position coordinates), transmitted to the control apparatus, and can contribute to the cutting method by the first cutting apparatus described later. .
- the carrier film is reattached after the inspection after the carrier film is peeled before the inspection as in the manufacturing system shown in FIG. This is the same in the second inspection process.
- the carrier films before and after the inspection may be the same or different.
- the same yield improvement effect can be acquired by performing an inspection process at the time of manufacture of a continuous roll instead of performing such an inspection process by a continuous manufacturing process. That is, based on the result of the inspection performed previously, at one end in the width direction of the first and second continuous rolls, the defect information (first and second sheet products) in a predetermined pitch unit (for example, 1000 mm) ( This is a case where defect coordinates, defect type, size, etc.) are attached as code information (for example, QR code, barcode). In such a case, the code information is read and analyzed at a stage prior to cutting, and cut into a predetermined size in the first and second cutting steps (sometimes referred to as skip cut) so as to avoid the defective portion.
- a predetermined pitch unit for example, 1000 mm
- code information for example, QR code, barcode
- the part including the defect is removed or bonded to a member that is not a liquid crystal panel, and a non-defective sheet-shaped product cut to a predetermined size is bonded to the liquid crystal panel.
- the yield of the liquid crystal display element is greatly improved.
- the first cutting device cuts (half-cuts) the first optical function film and the first adhesive layer into a predetermined size without cutting the first carrier film. Based on the defect information obtained by the first defect inspection apparatus 14, the cutting is performed so as to avoid the defect. Thereby, the product yield with respect to the 1st sheet-like object F1 improves significantly.
- the sheet piece of the first optical function film including the defect is excluded by a first exclusion device described later, and is not attached to the liquid crystal panel W.
- Second continuous roll preparation step (FIG. 1, S11).
- a wound body including a belt-like optical functional film is prepared as a second continuous roll.
- the laminated structure of the second sheet-like material has the same configuration as that of the first sheet-like material, but is not limited to this.
- the laminated structure of the second sheet-like material F2 has the same configuration as the first sheet-like material, but is not limited to this.
- the second sheet-like material F2 includes a second optical function film F21, a second carrier film F22, and a surface protection film F23.
- the second optical functional film F21 includes a second polarizer 21a, a third film F21b having an adhesive layer (not shown) on one surface thereof, and a fourth film having an adhesive layer (not shown) on the other surface. It is comprised with the film F21c.
- the third and fourth films F21b and F21c are, for example, protective films (for example, triacetyl cellulose film, PET film, etc.).
- the fourth film F21c is bonded to the liquid crystal panel surface side via the second adhesive layer F24.
- the third film F21b can be subjected to a surface treatment. Examples of the surface treatment include a hard coat treatment, an antireflection treatment, a treatment for the purpose of prevention of sticking, diffusion or antiglare, and the like.
- the second carrier film F22 is provided via the fourth film F21c and the second adhesive layer F24.
- the surface protective film F23 is provided via the third film F21b and the adhesive layer F25.
- the second sheet-like material is fed out from the second continuous roll that has been prepared and installed, and is conveyed downstream.
- the second conveyance device that conveys the second sheet-like material is configured by, for example, a nip roller pair, a tension roller, a rotation drive device, an accumulation device, a sensor device, a control device, and the like.
- Second inspection step (FIG. 1, S13). A defect of the second sheet is inspected using a second defect inspection device.
- the defect inspection method here is the same as the method using the first defect inspection apparatus described above.
- the second cutting device cuts (half-cuts) the second optical function film and the second adhesive layer into a predetermined size without cutting the second carrier film. If necessary, it is configured to cut so as to avoid the defect based on the defect information obtained by the second defect inspection apparatus. Thereby, the yield of a 2nd sheet-like thing improves significantly.
- the second sheet-like material including the defect is excluded by the second exclusion device and is not attached to the liquid crystal panel.
- the inspection apparatus inspects the liquid crystal display element having the optical functional film attached to both sides.
- Examples of the inspection method include a method of taking an image and processing with reflected light on both surfaces of the liquid crystal display element.
- a method of installing an inspection optical functional film between a CCD camera and an inspection object is also exemplified. Note that a known method can be applied to the image processing algorithm, and for example, a defect can be detected by density determination by binarization processing.
- a non-defective product of the liquid crystal display element is determined based on the defect information obtained by the inspection apparatus.
- the liquid crystal display element determined to be non-defective is conveyed to the next mounting process. If a defective product is determined, a rework process is performed, a new optical functional film is applied, and then inspected. If a good product is determined, the process proceeds to the mounting process. If a defective product is determined, the rework process is performed again. Or it is disposed of.
- the liquid crystal display device can be suitably manufactured by executing the first optical functional film bonding process and the second optical functional film bonding process on a continuous production line.
- the manufacturing system includes a first transfer device 12, a first pre-inspection peeling device 13, a first defect inspection device 14, a first carrier film laminating device 15, and a first cutting device. 16, what is provided with the 1st peeling apparatus 17 and the 1st bonding apparatus 18 is illustrated.
- the inspection of the first optical function film can be performed with high accuracy. It can be omitted.
- the first continuous roll of the long first sheet-like material F1 is installed on a roller mount device that is linked to a motor or the like so as to rotate freely or at a constant rotational speed.
- the rotational speed is set by the control device, and the drive is controlled.
- the first transport device 12 is a transport device that transports the first sheet-like material F1 to the downstream side.
- the first transport device 12 includes a nip roller pair, a tension roller, a rotation drive device, an accumulation device A, a sensor device, a control device, and the like, and is controlled by the control device.
- the 1st conveying apparatus 12 conveys the sheet piece of the optical function film before a cutting
- only an optical function film is conveyed downstream without using a 1st carrier film.
- the first pre-inspection peeling device 13 has a configuration in which the carrier film H11 is peeled off from the first sheet-like material F1 that has been conveyed and wound around a roll 132.
- the winding speed around the roll 132 is controlled by a control device.
- the peeling device 131 has a knife edge portion with a sharp tip. After the carrier film H11 is wound around the knife edge portion and reversely transferred, the carrier film H11 is peeled off and the carrier film H11 is peeled off.
- the first sheet-like material F1 is transported in the transport direction.
- the first defect inspection device 14 performs defect inspection after the carrier film H11 is peeled off.
- the first defect inspection device 14 detects the defect by analyzing the image data captured by the CCD camera, and further calculates its position coordinates. The position coordinates of this defect are provided for the skip cut by the first cutting device 16 described later.
- the first carrier film laminating device 15 bonds the carrier film H12 to the first optical functional film F11 via the first adhesive layer F14 after the first defect inspection.
- the carrier film H12 is unwound from a continuous roll 151 of the carrier film H12, and the carrier film H12 and the first optical function film F11 are sandwiched by one or a plurality of roller pairs 152, and the roller pair 152 holds a predetermined value. Apply the pressure of and stick together.
- the rotation speed, pressure control, and conveyance control of the roller pair 152 are controlled by a control device.
- the first cutting device 16 cuts the first optical function film F11 at a predetermined interval in a state where the continuity of the carrier film H12 is maintained after the carrier film H12 is bonded.
- the first optical function film F11, the surface protective film F13, the first adhesive layer F14, and the adhesive layer F15 have a predetermined size without completely cutting the carrier film H12. Disconnected.
- Examples of cutting means used in the first cutting device 16 include cutting devices equipped with various cutting blades, laser devices, and the like. Especially, it is preferable to use the cutting device provided with the knife-type cutting blade which does not accompany cutting (saw type) from a viewpoint that it is hard to take out dust, such as cutting waste.
- Cutting devices equipped with a knife-type cutting blade include those equipped with rotary round blades, fixed round blades, cutter knives, etc., for cutting while moving the cutting blade in the cutting direction. As what cuts without moving to a direction, what is equipped with a pressing blade blade and a straight Thomson blade is mentioned.
- the first cutting device 16 cuts into a predetermined size so as to avoid the defect portion based on the position coordinates of the defect detected in the first defect inspection process. That is, the cut product including the defective portion is rejected as a defective product by the first rejecting device 19 in a subsequent process.
- the first cutting device 16 may continuously cut into a predetermined size while ignoring the existence of the defect. In this case, it can be configured such that the portion is removed without being bonded in the bonding process described later.
- the control in this case also depends on the function of the control device.
- the 1st cutting device 16 is provided with the holding table which adsorbs and hold
- the accumulation device A of the conveying device moves in the vertical direction so as not to stop the continuous conveyance of the downstream and upstream first sheet-like materials F1. Is configured to do. This operation is also controlled by the control device.
- the 1st bonding apparatus 18 is the 1st adhesion layer F14 for the 1st sheet-like thing F1 (sheet piece of the 1st optical function film) from which the carrier film H12 was peeled by the 1st peeling apparatus 17 after the said cutting process.
- the transport path of the first sheet-like material F1 is above the transport path of the liquid crystal panel W.
- the first optical functional film F ⁇ b> 11 is bonded to the liquid crystal panel W surface by the pressing roller 181 and the guide roller 182 while being bonded.
- the pressing pressure and driving operation of the pressing roller 181 and the guide roller 182 are controlled by a control device.
- the peeling device 171 of the first peeling device 17 has an edge-shaped member with a sharp tip, and the carrier film H12 is wound around the knife edge portion and transferred in reverse, thereby peeling the carrier film H12 and the carrier.
- the first sheet-like material F1 (first optical function film F11) after peeling the film H12 is configured to be sent out to the liquid crystal panel W surface.
- the peeled release mold H12 is wound around a roll 172. The winding control of the roll 172 is controlled by the control device.
- the radius of curvature at the tip of the edge-shaped member is, for example, 0.1 to 2.5 mm, and preferably 1 to 1.5 mm, from the viewpoint of smoothly peeling the carrier film H12 from the adhesive layer.
- the tension (tension for peeling) generated in the carrier film H12 after peeling is, for example, 0.1 to 0.2 N / mm from the viewpoint of stable conveyance, and is 0.15 to 0.2 N / mm. preferable.
- the laminating apparatus is composed of a pressing roller 181 provided at the laminating position P31 and a guide roller 182 disposed to face the pressing roller 181.
- the guide roller 182 is composed of a rubber roller that is rotationally driven by a motor, and is arranged so as to be movable up and down.
- a pressing roller 181 made of a metal roller that is rotationally driven by a motor is disposed directly above it.
- the pressing roller 181 is raised to a position higher than the upper surface so as to open a gap between the rollers.
- both the guide roller 182 and the pressing roller 181 may be rubber rollers or metal rollers.
- the liquid crystal panel W is cleaned by various cleaning devices and is transported by the transport device R.
- the transport control of the transport device R is also controlled by the control device.
- the 1st removal apparatus 19 which excludes the 1st sheet-like material F1 containing a fault is demonstrated.
- the guide roller 182 moves vertically downward.
- the roller 192 around which the adhesive tape 191 is stretched moves to a fixed position of the guide roller 182.
- the pressing roller 181 By moving the pressing roller 181 vertically downward, the first sheet-like material F1 including the defect is pressed against the adhesive tape 191, and the first sheet-like material F1 is attached to the adhesive tape 191.
- One sheet F1 is wound around a roller 193.
- the liquid crystal panel W1 manufactured as described above is transported to the downstream side, and the second optical function film F21 (second sheet-like material F2) is bonded thereto. Since the series of steps is the same as the first optical function film F11 (first sheet-like material F1), the description thereof is omitted.
- a liquid crystal display device is generally formed by assembling components such as a liquid crystal panel, an optical functional film, and an illumination system as necessary, and incorporating a drive circuit.
- a liquid crystal panel an arbitrary type such as a TN type, an STN type, a ⁇ type, a VA type, or an IPS type can be used.
- an appropriate liquid crystal display device such as a liquid crystal display device in which an adhesive optical functional film is disposed on one side or both sides of a liquid crystal panel, or a backlight or a reflector used in an illumination system can be manufactured.
- the optical functional film according to the present invention can be installed on one side or both sides of the liquid crystal panel.
- optical function films are provided on both sides, they may be the same or different.
- one or two layers of appropriate parts such as a diffusion plate, an antiglare layer, an antireflection film, a protective plate, a prism array, a lens array sheet, a light diffusion plate, and a backlight are placed at appropriate positions. More than one layer can be arranged.
- the optical functional film of the present invention is a band-shaped optical functional film used for bonding the exposed surface of the optical functional film to a sheet, in a unit length in the longitudinal direction of the carrier film.
- the bending rigidity is 5.0 ⁇ 10 ⁇ 5 N ⁇ mm 2 or more and 8.0 ⁇ 10 ⁇ 2 Nmm 2 or less
- the longitudinal elastic modulus in the longitudinal direction is 3000 MPa or more and 5000 MPa or less.
- the flexural rigidity per unit length in the longitudinal direction of the carrier film is preferably 1 ⁇ 10 ⁇ 2 N ⁇ mm 2 or more and 7 ⁇ 10 ⁇ 2 Nmm 2 or less, and the longitudinal elastic modulus in the longitudinal direction. Is 3300 MPa or more and 4700 MPa or less, more preferably the bending rigidity per unit length in the longitudinal direction of the carrier film is 3 ⁇ 10 ⁇ 2 N ⁇ mm 2 or more and 5 ⁇ 10 ⁇ 2 Nmm 2 or less, and the longitudinal direction Has a longitudinal elastic modulus of 3600 MPa or more and 4400 MPa or less.
- the thickness of the carrier film is preferably 10 ⁇ m or more and 60 ⁇ m or less for the reasons described above, and more preferably 20 ⁇ m or more and 40 ⁇ m or less in consideration of cost, handling properties, and film rigidity.
- a polymer film is preferably used from the viewpoint of satisfying the above physical properties.
- polyester films such as polyethylene terephthalate film, polybutylene terephthalate film, and polyethylene naphthalate film are preferable.
- the carrier film if necessary, release and antifouling treatment with a silicone, fluorine, long chain alkyl or fatty acid amide release agent, silica powder, etc., coating type, kneading type, vapor deposition
- An antistatic treatment such as a mold can also be performed.
- the release property from the adhesive layer can be further improved by appropriately performing a release treatment such as silicone treatment, long-chain alkyl treatment, or fluorine treatment on the surface of the carrier film.
- the pressure-sensitive adhesive layer of the present invention is suitable for a carrier film that has been subjected to a release treatment, and is particularly suitable for a carrier film that has been subjected to a release treatment by a silicone treatment.
- a general value for the peeling force between the carrier film and the adhesive layer is, for example, 0.05 N / 50 mm to 0.3 N / 50 mm.
- the peeling force is a value measured by the following method. ⁇ Peeling force> An optical sheet member with a carrier film cut to a width of 50 mm was peeled at 90 ° at a peeling speed of 300 mm / min at 23 ° C., and the initial adhesive force was measured. The adhesive strength was measured according to JIS Z 0237.
- the belt-shaped optical functional film is a wound body (continuous roll) wound in a roll shape.
- the belt-like optical functional film has a carrier film via an adhesive layer on at least one side of the optical functional film.
- Any optical functional film can be used as long as it is bonded to a liquid crystal panel.
- a polarizing film having a protective film on one or both sides of a polarizer can be mentioned.
- stacked the retardation film and the other optical compensation film suitably with respect to the polarizer or the polarizing film may be used.
- an acrylic pressure-sensitive adhesive is used, but an acrylic (co) polymer containing 80% by weight or more of (meth) acrylic acid alkyl ester is preferable.
- An acrylic pressure-sensitive adhesive is preferably used because it is excellent in optical transparency, exhibits appropriate wettability, cohesiveness, and adhesive pressure-sensitive adhesive properties, and is excellent in weather resistance, heat resistance, and the like.
- the adhesive layer can be formed by applying it to a substrate and then curing it by heat treatment.
- a method for forming the adhesive layer for example, using a carrier film that has been subjected to a release treatment as a base material, the adhesive composition is applied to the carrier film, and the polymerization solvent and the like are removed by drying and cured to form an adhesive layer. And a method of transferring the film to an optical functional film.
- a method for forming the adhesive layer for example, using an optical functional film as a substrate, the adhesive composition is directly applied to the optical functional film, and the polymerization solvent and the like are removed by drying and cured to be adhesive.
- one or more solvents other than the polymerization solvent may be added as appropriate.
- an anchor layer is formed on the surface of the optical functional film, or the pressure-sensitive adhesive layer is formed after performing various easy adhesion treatments such as corona treatment and plasma treatment. Can do. Moreover, you may perform an easily bonding process on the surface of an adhesion layer.
- the thickness of the pressure-sensitive adhesive layer is preferably 5 to 50 ⁇ m and more preferably 10 to 25 ⁇ m for the purpose of maintaining the durability of the heat test and the wet heat test while ensuring sufficient adhesive force.
- the adhesive layer is protected with a releasable carrier film (carrier film) until it is bonded to the liquid crystal panel.
- the optical functional film those used for forming an image display device such as a liquid crystal display device are used, and the type thereof is not particularly limited.
- the optical functional film includes a polarizing film.
- a polarizing film having a protective film on one or both sides of a polarizer is generally used.
- polarizers include dichroic iodine and dichroic dyes on hydrophilic polymer films such as polyvinyl alcohol films, partially formalized polyvinyl alcohol films, and ethylene / vinyl acetate copolymer partially saponified films.
- hydrophilic polymer films such as polyvinyl alcohol films, partially formalized polyvinyl alcohol films, and ethylene / vinyl acetate copolymer partially saponified films.
- examples thereof include polyene-based oriented films such as those obtained by adsorbing substances and uniaxially stretched, polyvinyl alcohol dehydrated products and polyvinyl chloride dehydrochlorinated products.
- a polarizer composed of a polyvinyl alcohol film and a dichroic material such as iodine is preferable.
- the thickness of these polarizers is not particularly limited, but is generally about 5 to 80 ⁇ m.
- a polarizer in which a polyvinyl alcohol film is dyed with iodine and uniaxially stretched can be prepared, for example, by dyeing polyvinyl alcohol in an aqueous solution of iodine and stretching it 3 to 7 times the original length. If necessary, it can be immersed in an aqueous solution such as potassium iodide which may contain boric acid, zinc sulfate, zinc chloride or the like. Further, if necessary, the polyvinyl alcohol film may be immersed in water and washed before dyeing.
- Stretching may be performed after dyeing with iodine, may be performed while dyeing, or may be dyed with iodine after stretching.
- the film can be stretched even in an aqueous solution such as boric acid or potassium iodide or in a water bath.
- thermoplastic resin excellent in transparency, mechanical strength, thermal stability, moisture barrier property, isotropy and the like is used.
- thermoplastic resins include cellulose resins such as triacetyl cellulose, polyester resins, polyethersulfone resins, polysulfone resins, polycarbonate resins, polyamide resins, polyimide resins, polyolefin resins, (meth) acrylic resins, cyclic Examples thereof include polyolefin resins (norbornene resins), polyarylate resins, polystyrene resins, polyvinyl alcohol resins, and mixtures thereof.
- a protective film is bonded to one side of the polarizer by an adhesive layer. On the other side, as a protective film, (meth) acrylic, urethane-based, acrylurethane-based, epoxy-based, silicone-based, etc. These thermosetting resins or ultraviolet curable resins can be used.
- an optical functional film for example, for formation of liquid crystal display devices such as a reflection plate, an anti-transmission plate, a retardation plate (including wavelength plates such as 1/2 and 1/4), a visual compensation film, and a brightness enhancement film.
- the optical layer which may be used is mentioned. These can be used alone as an optical functional film, or can be laminated on the polarizing film for practical use and used in one or more layers.
- the optical functional film in which the optical layer is laminated on the polarizing film can be formed by a method of sequentially laminating separately in the manufacturing process of a liquid crystal display device, etc.
- an appropriate adhesive means such as an adhesive layer can be used for the lamination.
- their optical axes can be set at an appropriate arrangement angle in accordance with the target retardation characteristics.
- the carrier film is cut into a strip shape having a width of 10 mm and a length of 100 mm, and the strip-like sample is pulled in the longitudinal direction under a temperature environment of 25 ° C. using a universal tensile compression tester (Tensilon) under the following conditions.
- the tensile modulus was determined from the obtained SS (Stress-Strain) curve.
- the tensile speed is 50 mm / min
- the distance between chucks is 50 mm
- the measurement temperature is room temperature.
- the method of obtaining the elastic modulus from the SS curve is to draw a tangent at the initial rise of the SS curve, read the strength at the position where the tangent extension reaches 100% elongation, and measure the value.
- the value divided by the cross-sectional area (thickness ⁇ sample width (10 mm)) was taken as the longitudinal (tensile) elastic modulus.
- the bending rigidity per unit length is represented by E ⁇ I.
- E is the longitudinal elastic modulus of the optical function film [N / mm 2]
- Carrier film breaking rate Using the continuous roll obtained in the Examples etc., as described above, when 100 sheets are laminated with the laminating apparatus shown in FIG. 3 continuous to the apparatus in FIG. 2, the carrier film is broken at the half-cut portion. It was evaluated whether or not.
- Example 1 Four-necked flask equipped with 95 parts of butyl acrylate (BA), 5 parts of acrylic acid (AA), 0.1 part of 2,2-azobisisobutyronitrile, 140 parts of ethyl acetate, and a nitrogen introduction tube and a cooling tube The polymer was sufficiently purged with nitrogen and then subjected to a polymerization reaction at 55 ° C. for 8 hours while stirring under a nitrogen stream to obtain a high molecular weight polymer A having a weight average molecular weight of 1.7 million.
- a polyisocyanate-based cross-linking agent (product name Coronate L: manufactured by Nippon Polyurethane) composed of a tolylene diisocyanate adduct of trimethylolpropane, 3-glycidoxypropyltri Methoxysilane (product name KBM403: manufactured by Shin-Etsu Silicone) was blended.
- the adhesive composition was dried and applied to a long carrier film (Toray Co., Ltd., Lumirror F53) having a thickness of 6.3 ⁇ m by a fountain coater so that the thickness was 25 ⁇ m. Drying was performed at 150 ° C. for 2 minutes to obtain an adhesive layer with a carrier film.
- This adhesive layer with a carrier film was bonded to a long polarizing film and wound to obtain a continuous roll of a polarizing film with a carrier film and an adhesive layer.
- the polarizing film was produced as follows. A polyvinyl alcohol film having a thickness of 80 ⁇ m was stretched up to 3 times while being dyed for 1 minute in an iodine solution of 0.3% concentration at 30 ° C. between rolls having different speed ratios. Thereafter, the total draw ratio was stretched to 6 times while being immersed in an aqueous solution containing 60% at 4% concentration of boric acid and 10% concentration of potassium iodide for 0.5 minutes. Next, after washing by immersing in an aqueous solution containing potassium iodide at 30 ° C. and 1.5% concentration for 10 seconds, drying was performed at 50 ° C. for 4 minutes to obtain a polarizer. A saponified 80 ⁇ m thick triacetyl cellulose film was bonded to both surfaces of the polarizer with a polyvinyl alcohol-based adhesive to prepare a polarizing film.
- Example 2-7 the carrier film and the continuous roll of the polarizing film with an adhesion layer were obtained on the same conditions as Example 1 except having changed the carrier film into what is shown in Table 1.
- Table 1 shows carrier films used in Examples and Comparative Examples.
- Example 1 Comparative Examples 1 to 3
- the carrier film and the continuous roll of the polarizing film with an adhesion layer were obtained on the same conditions as Example 1 except having changed the carrier film into what is shown in Table 1.
- Table 2 shows the above evaluation results.
- Comparative Example 1 in which the bending rigidity of the carrier film exceeds the upper limit, bubbles are easily generated due to floating from the edge-shaped member, and conversely in Comparative Example 2 in which the bending rigidity of the carrier film is less than the lower limit, Generation of bubbles due to wrinkles and the like at the time of bonding became easy to occur. Further, in Comparative Example 3 in which the longitudinal elastic modulus of the carrier film was less than the lower limit, bubbles were easily generated due to peeling during transportation.
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Abstract
Description
前記キャリアフィルムの長手方向の単位長さあたりの曲げ剛性が5.0×10-5N・mm2以上8.0×10-2Nmm2以下であり、かつ長手方向の縦弾性率が3000MPa以上5000MPa以下であることを特徴とする。
前記キャリアフィルムの長手方向の単位長さあたりの曲げ剛性が5.0×10-5N・mm2以上8.0×10-2Nmm2以下であり、かつ長手方向の縦弾性率が3000MPa以上5000MPa以下であることを特徴とする。
(単位長さあたりの曲げ剛性は、E×Iで表され、Eは光学機能フィルムの縦弾性率[N/mm2]、Iは単位長さ当たりの断面二次モーメントであり、I=b×h3/12(但し、b:単位長さ(1mm)、h:フィルム厚み[mm])である。)
本発明の液晶表示装置の製造方法によると、上記の如き作用効果により、光学機能フィルムの貼り合わせの際に気泡の発生を効果的に防止でき、好ましくはキャリアフィルムの破断も生じにくいため、製品品質が高く、製品歩留りの高い製造方法となる。
<剥離力>
キャリアフィルム付きの光学シート部材を50mm幅に裁断したものを、23℃、引き剥がし速度300mm/分で、キャリアフィルムを90°ピールして、初期接着力を測定した。なお、接着力の測定はJIS Z 0237に準じて測定した。
キャリアフィルムを幅10mm、長さ100mmの長さを持つ短冊状に切り出し、25℃の温度環境下で万能引張圧縮試験機(テンシロン)にて以下の条件で前記短冊状のサンプルを長手方向に引っ張って測定し、得られたS-S(Stress-Strain)カーブより引張弾性率を求めた。測定条件としては、引張速度が50mm/min、チャック間が50mm、測定温度が常温である。S-Sカーブから弾性率を求める方法は、S-Sカーブの初期立ち上がりのところに接線を引き、接線の延長線が100%伸び率となる位置の強度を読み取り、その値を測定したサンプル片の断面積(厚み×サンプル幅(10mm))で除した値を、縦(引張)弾性率とした。
上記で測定されたキャリアフィルムの縦弾性率から、単位長さ当たりの曲げ剛性を次のようにして求めた。単位長さあたりの曲げ剛性は、E×Iで表される。Eは光学機能フィルムの縦弾性率[N/mm2]、Iは単位長さ当たりの断面二次モーメントであり、断面二次モーメントはI=b×h3/12(但し、b:単位長さ(1mm)、h:フィルム厚み[mm])であるため、これらの値から単位長さあたりの曲げ剛性を求めることができる。
実施例等で得られた連続ロールを用いて、図2の装置に連続する図3に示す貼合装置(キャリアフィルムの剥離に使用するエッジ状部材のエッジ部の曲率半径は1.5mm、反転角度170°(内角10°)、張力150N/mm)により、液晶パネルと光学機能フィルムのシート片との貼り合わせを行った。この工程で100枚貼りあわせを行う際に、エッジ状部材のエッジ部からキャリアフィルムが浮くか否かを目視で評価した。なお、液晶パネルとして、ガラス基板を有する32インチテレビに対応するものを使用した。
実施例等で得られた連続ロールを用いて、キャリアフィルムと偏光フィルムが貼り合せされた状態を1mについて目視で観察し、キャリアフィルムにしわ・もまれが生じているか否かを評価した。
実施例等で得られた連続ロールを用いて、上記のように、図2の装置に連続する図3に示す貼合装置で100枚貼りあわせを行う際に、貼り合わせの直前において、ハーフカット端部で粘着剤とキャリアフィルムの間の剥がれが生じているか否かを目視で評価した。
実施例等で得られた連続ロールを用いて、上記のように、図2の装置に連続する図3に示す貼合装置で100枚貼りあわせを行った際に、貼り合わせ後の製品について、気泡が発生しているか否かを目視で評価した。
実施例等で得られた連続ロールを用いて、上記のように、図2の装置に連続する図3に示す貼合装置で100枚貼りあわせを行う際に、ハーフカット部でキャリアフィルムの破断が生じるか否かを評価した。
ブチルアクリレート(BA)95部、アクリル酸(AA)5部、2,2-アゾビスイソブチロニトリル0.1部、酢酸エチル140部を、窒素導入管と冷却管を備えた4つ口フラスコに投入し、充分に窒素置換した後、窒素気流下で撹拌しながら55℃で8時間重合反応を行い、重量平均分子量170万の高分子量ポリマーAを得た。
実施例1において、キャリアフィルムを表1に示すものに代えたこと以外は、実施例1と同じ条件で、キャリアフィルム・粘着層付偏光フィルムの連続ロールを得た。なお、表1には、実施例、及び比較例で使用したキャリアフィルムを示す。
実施例1において、キャリアフィルムを表1に示すものに代えたこと以外は、実施例1と同じ条件で、キャリアフィルム・粘着層付偏光フィルムの連続ロールを得た。
F2 第2シート状物
F11 第1光学機能フィルム
F11a 第1偏光子
F11b 第1フィルム
F11c 第2フィルム
F12 第1キャリアフィルム
F13 表面保護フィルム
F14 第1粘着層
F21 第2光学機能フィルム
F21a 第2偏光子
F21b 第3フィルム
F21c 第4フィルム
F22 第2キャリアフィルム
F23 表面保護フィルム
F24 第2粘着層
12 第1搬送装置
13 第1検査前剥離装置
14 第1欠点検査装置
15 第1キャリアフィルム貼合装置
16 第1切断装置
17 第1剥離装置
18 第1貼合装置
19 第1排除装置
R 搬送装置
W 液晶パネル
Claims (5)
- キャリアフィルムが貼設された帯状の光学機能フィルムからキャリアフィルムを残して光学機能フィルムを所定間隔で切断した後、エッジ状部材でキャリアフィルムを反転させて光学機能フィルムを剥離させながら、光学機能フィルムの露出面を枚葉体に貼り合わせるために使用される帯状の光学機能フィルムにおいて、
前記キャリアフィルムの長手方向の単位長さあたりの曲げ剛性が5.0×10-5N・mm2以上8.0×10-2Nmm2以下であり、かつ長手方向の縦弾性率が3000MPa以上5000MPa以下であることを特徴とする光学機能フィルム。
(単位長さあたりの曲げ剛性は、E×Iで表され、Eは光学機能フィルムの縦弾性率[N/mm2]、Iは単位長さ当たりの断面二次モーメントであり、I=b×h3/12(但し、b:単位長さ(1mm)、h:フィルム厚み[mm])である。) - キャリアフィルムの厚みが10μm以上60μm以下である請求項1に記載の光学機能フィルム。
- 帯状の光学機能フィルムがロール状に巻回されたものである請求項1又は2に記載の光学機能フィルム。
- キャリアフィルムが貼設された帯状の光学機能フィルムからキャリアフィルムを残して光学機能フィルムを所定間隔で切断する工程と、エッジ状部材でキャリアフィルムを反転させて光学機能フィルムを剥離させながら、光学機能フィルムの露出面を液晶パネルに貼り合わせる工程とを含む液晶表示装置の製造方法において、
前記キャリアフィルムの長手方向の単位長さあたりの曲げ剛性が5.0×10-5N・mm2以上8.0×10-2Nmm2以下であり、かつ長手方向の縦弾性率が3000MPa以上5000MPa以下であることを特徴とする液晶表示装置の製造方法。
(単位長さあたりの曲げ剛性は、E×Iで表され、Eは光学機能フィルムの縦弾性率[N/mm2]、Iは単位長さ当たりの断面二次モーメントであり、I=b×h3/12(但し、b:単位長さ(1mm)、h:フィルム厚み[mm])である。) - 前記帯状の光学機能フィルムが、ロール状の巻回体から繰り出されたものである請求項4に記載の液晶表示装置の製造方法。
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| EP11821609.2A EP2613182A1 (en) | 2010-09-01 | 2011-08-23 | Optical functional film, and method for manufacturing liquid crystal display device using same |
| CN201180032333.7A CN102971648B (zh) | 2010-09-01 | 2011-08-23 | 光学功能膜及使用其的液晶显示装置的制造方法 |
| US13/813,286 US8936692B2 (en) | 2010-09-01 | 2011-08-23 | Optical functional film, and method for manufacturing liquid crystal display device using same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014141553A1 (ja) * | 2013-03-14 | 2014-09-18 | 日東電工株式会社 | 光学表示パネルの連続製造システムおよび光学表示パネルの連続製造方法 |
| TWI584955B (zh) * | 2012-08-10 | 2017-06-01 | Nitto Denko Corp | A manufacturing method of an optical display panel, and a manufacturing system for an optical display panel |
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| KR20180031058A (ko) | 2015-08-21 | 2018-03-27 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | 광축을 갖는 광학 필름 및 그의 처리 시스템 및 방법 |
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| KR102042053B1 (ko) * | 2016-08-25 | 2019-11-07 | 주식회사 엘지화학 | 디스플레이 유닛의 제조 시스템 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006064884A1 (ja) * | 2004-12-15 | 2006-06-22 | Kuraray Co., Ltd. | 活性エネルギー線硬化性樹脂組成物およびその用途 |
| JP2008510638A (ja) * | 2004-08-27 | 2008-04-10 | レオンハード クルツ ゲーエムベーハー ウント コー.カーゲー | 転写フィルムおよびその用途、並びに加飾樹脂製品の生産方法 |
| JP2008096499A (ja) * | 2006-10-06 | 2008-04-24 | Nippon Shokubai Co Ltd | 凹凸表面を有する機能性熱可塑性樹脂シートおよびその製造方法、ならびに転写フィルム |
| WO2008047712A1 (en) | 2006-10-17 | 2008-04-24 | Nitto Denko Corporation | Optical member adhering method, and apparatus using the method |
| JP2008149537A (ja) * | 2006-12-15 | 2008-07-03 | Toshiba Corp | アゾベンゼン骨格を有する樹脂層を含む熱転写記録媒体 |
| JP2010115818A (ja) * | 2008-11-12 | 2010-05-27 | Toray Advanced Film Co Ltd | 光学フィルター用積層プラスチックフィルム |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040002796A (ko) | 2002-06-28 | 2004-01-07 | 후지 샤신 필름 가부시기가이샤 | 편광판 점착방법 및 그 장치 |
| JP4346971B2 (ja) * | 2003-05-16 | 2009-10-21 | 富士フイルム株式会社 | 偏光板貼合方法及び装置 |
| WO2007052579A1 (ja) | 2005-11-02 | 2007-05-10 | Nippon Shokubai Co., Ltd. | 転写法により機能性を付与された熱可塑性樹脂シートおよびその製造方法 |
| JP2009157363A (ja) * | 2007-12-03 | 2009-07-16 | Nitto Denko Corp | 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 |
-
2010
- 2010-09-01 JP JP2010195960A patent/JP5167319B2/ja active Active
-
2011
- 2011-08-23 US US13/813,286 patent/US8936692B2/en active Active
- 2011-08-23 CN CN201180032333.7A patent/CN102971648B/zh active Active
- 2011-08-23 EP EP11821609.2A patent/EP2613182A1/en not_active Withdrawn
- 2011-08-23 KR KR1020137008001A patent/KR101308813B1/ko active Active
- 2011-08-23 WO PCT/JP2011/068959 patent/WO2012029592A1/ja not_active Ceased
- 2011-08-29 TW TW100130960A patent/TWI409512B/zh active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008510638A (ja) * | 2004-08-27 | 2008-04-10 | レオンハード クルツ ゲーエムベーハー ウント コー.カーゲー | 転写フィルムおよびその用途、並びに加飾樹脂製品の生産方法 |
| WO2006064884A1 (ja) * | 2004-12-15 | 2006-06-22 | Kuraray Co., Ltd. | 活性エネルギー線硬化性樹脂組成物およびその用途 |
| JP2008096499A (ja) * | 2006-10-06 | 2008-04-24 | Nippon Shokubai Co Ltd | 凹凸表面を有する機能性熱可塑性樹脂シートおよびその製造方法、ならびに転写フィルム |
| WO2008047712A1 (en) | 2006-10-17 | 2008-04-24 | Nitto Denko Corporation | Optical member adhering method, and apparatus using the method |
| JP2008149537A (ja) * | 2006-12-15 | 2008-07-03 | Toshiba Corp | アゾベンゼン骨格を有する樹脂層を含む熱転写記録媒体 |
| JP2010115818A (ja) * | 2008-11-12 | 2010-05-27 | Toray Advanced Film Co Ltd | 光学フィルター用積層プラスチックフィルム |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI584955B (zh) * | 2012-08-10 | 2017-06-01 | Nitto Denko Corp | A manufacturing method of an optical display panel, and a manufacturing system for an optical display panel |
| WO2014141553A1 (ja) * | 2013-03-14 | 2014-09-18 | 日東電工株式会社 | 光学表示パネルの連続製造システムおよび光学表示パネルの連続製造方法 |
| KR101535050B1 (ko) * | 2013-03-14 | 2015-07-07 | 닛토덴코 가부시키가이샤 | 광학 표시 패널의 연속 제조 시스템 및 광학 표시 패널의 연속 제조 방법 |
| WO2017122732A1 (ja) * | 2016-01-15 | 2017-07-20 | 日東電工株式会社 | 粘着剤層付片保護偏光フィルム、画像表示装置およびその連続製造方法 |
| JPWO2017122732A1 (ja) * | 2016-01-15 | 2018-07-19 | 日東電工株式会社 | 粘着剤層付片保護偏光フィルム、画像表示装置およびその連続製造方法 |
| JP2020170176A (ja) * | 2016-01-15 | 2020-10-15 | 日東電工株式会社 | 粘着剤層付片保護偏光フィルム、画像表示装置およびその連続製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101308813B1 (ko) | 2013-09-13 |
| TWI409512B (zh) | 2013-09-21 |
| CN102971648B (zh) | 2016-01-13 |
| US20130126080A1 (en) | 2013-05-23 |
| KR20130073954A (ko) | 2013-07-03 |
| JP5167319B2 (ja) | 2013-03-21 |
| CN102971648A (zh) | 2013-03-13 |
| JP2012053288A (ja) | 2012-03-15 |
| US8936692B2 (en) | 2015-01-20 |
| TW201224536A (en) | 2012-06-16 |
| EP2613182A1 (en) | 2013-07-10 |
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