[go: up one dir, main page]

WO2010093030A1 - Polariseur, panneau à cristaux liquides et dispositif d'affichage à cristaux liquides les comprenant - Google Patents

Polariseur, panneau à cristaux liquides et dispositif d'affichage à cristaux liquides les comprenant Download PDF

Info

Publication number
WO2010093030A1
WO2010093030A1 PCT/JP2010/052131 JP2010052131W WO2010093030A1 WO 2010093030 A1 WO2010093030 A1 WO 2010093030A1 JP 2010052131 W JP2010052131 W JP 2010052131W WO 2010093030 A1 WO2010093030 A1 WO 2010093030A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
liquid crystal
resin film
resin
polarizing plate
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/JP2010/052131
Other languages
English (en)
Japanese (ja)
Inventor
森美穂
室誠治
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 KR1020117018448A priority Critical patent/KR101751543B1/ko
Publication of WO2010093030A1 publication Critical patent/WO2010093030A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements

Definitions

  • the present invention relates to a polarizing plate provided with a resin film laminated on one or both sides of a polarizing film, and a liquid crystal panel and a liquid crystal display device using the polarizing plate.
  • liquid crystal display devices are rapidly expanding as thin display devices such as liquid crystal televisions, liquid crystal monitors, and personal computers.
  • the market for liquid crystal televisions is remarkably expanding, and the demand for cost reduction is very high.
  • a normal liquid crystal display device includes a backlight made of a cold cathode tube or an LED, a light diffusion plate, one or a plurality of light diffusion sheets, a back side polarizing plate, a liquid crystal cell, and a viewing side polarizing plate.
  • a condensing sheet may be further disposed between the backlight and the back-side polarizing plate.
  • one or more light diffusing sheets are omitted by reducing the number of parts by providing light diffusibility to the back side polarizing plate itself disposed between the liquid crystal cell and the backlight.
  • Techniques are known (e.g., JPH11-183712-A, JP2000-75133-A, JP2000-75134-A, JP2000-75134-A, JP2000-75134-A and JP2000-75134-A).
  • JP2000-75136-A has a light diffusion layer in close contact with one or both sides of a polarizing plate, and the light diffusion layer has a fine concavo-convex structure with a center line average roughness of 0.3 ⁇ m or more on the outer surface.
  • a light diffusing polarizing plate having a surface hardness of pencil hardness H or lower is disclosed, and by controlling the surface hardness of the light diffusing layer to H or lower, an optical element such as a condensing sheet disposed on the polarizing plate. It is also described that damage to the member can be prevented.
  • the scratch resistance of the surface of the polarizing plate itself is not taken into consideration, and in the liquid crystal display device, the light diffusing on the light diffusing polarizing plate is not considered.
  • optical members such as plates, light diffusing sheets, and light condensing sheets are stacked, the surface of the light diffusing polarizing plate is damaged due to contact with the optical members, which adversely affects the image quality of the liquid crystal display device. There was a problem of affecting.
  • an object of the present invention is to provide a polarizing plate that can obtain a high-quality image when it is used as a liquid crystal display device, particularly a back-side polarizing plate disposed between a liquid crystal cell and a backlight.
  • Another object of the present invention is to provide a liquid crystal panel and a liquid crystal display device using the polarizing plate.
  • the present invention comprises a polarizing film composed of a uniaxially stretched polyvinyl alcohol-based resin film on which a dichroic dye such as iodine or a dichroic dye is adsorbed and oriented, and a resin film laminated on at least one surface of the polarizing film.
  • a back-side polarizing plate disposed between a liquid crystal cell and a backlight included in the liquid crystal display device.
  • the hardness (hereinafter also referred to as steel wool hardness) of the surface (outer surface) opposite to the side facing the polarizing film in the resin film is steel wool with a load of 250 g / cm 2 and a stroke.
  • the number When expressed as the number of flaws when subjected to 10 reciprocating frictions under conditions of a width of 5 cm and a speed of 50 reciprocations / minute, the number is 10 or less. Moreover, it is preferable that the pencil hardness of the surface (outer surface) on the opposite side to the side which opposes the polarizing film in this resin film is H or less.
  • the resin film is preferably a diffusion film having light diffusibility.
  • the resin film may be a film having one surface with an uneven shape.
  • one surface of the resin film is a smooth surface having a 10-point average roughness of less than 0.1 ⁇ m, and the other surface is an uneven surface having a 10-point average roughness of 0.1 ⁇ m or more.
  • an optical compensation film or a protective film may be laminated on the surface of the polarizing film opposite to the surface on which the resin film is laminated.
  • a liquid crystal panel comprising a liquid crystal cell and the polarizing plate of the present invention laminated on the liquid crystal cell, the surface opposite to the surface on which the resin film of the polarizing film is laminated.
  • a liquid crystal panel is provided in which a polarizing plate is disposed so as to face the liquid crystal cell.
  • a liquid crystal display device comprising a backlight, a light diffusion plate, and the liquid crystal panel of the present invention in this order, wherein the liquid crystal panel is such that the resin film of the polarizing plate faces the light diffusion plate.
  • a liquid crystal display device is provided that is disposed to face the diffusion sheet.
  • the polarizing plate and the liquid crystal panel of the present invention since the resin film side surface of the polarizing plate is sufficiently strong against scratches, optical members such as a light diffusing plate, a light diffusing sheet, and a light collecting sheet are stacked on the polarizing plate. In this case, the polarizing plate can be effectively suppressed or prevented from being damaged. Therefore, according to the polarizing plate and the liquid crystal panel of the present invention, it is possible to provide a liquid crystal display device excellent in image quality without causing scratches or unevenness in the image of the liquid crystal display device to which the polarizing plate and the liquid crystal panel are applied. Moreover, according to the present invention, it is possible to reduce the thickness of the liquid crystal display device and the number of members. Such a liquid crystal display device of the present invention can be suitably applied to a liquid crystal display device for a large-screen liquid crystal television, particularly a liquid crystal display device for a liquid crystal television that can be wall-mounted.
  • the polarizing plate of this invention is arrange
  • the present invention relates to a back side polarizing plate.
  • a resin film is normally laminated
  • the polarizing plate of the present invention will be described in more detail.
  • the polarizing film used in the polarizing plate of the present invention is obtained by adsorbing and orienting a dichroic dye on a uniaxially stretched polyvinyl alcohol resin film.
  • a saponified polyvinyl acetate resin can be used as the polyvinyl alcohol resin constituting the polyvinyl alcohol resin film.
  • Polyvinyl acetate resins include polyvinyl acetate, which is a homopolymer of vinyl acetate, and copolymers of vinyl acetate and other monomers copolymerizable therewith, such as ethylene-vinyl acetate copolymers. Etc.
  • examples of other monomers copolymerizable with vinyl acetate include unsaturated carboxylic acids, olefins, vinyl ethers, unsaturated sulfonic acids, and acrylamides having an ammonium group.
  • the saponification degree of the polyvinyl alcohol resin is usually about 85 to 100 mol%, preferably 98 mol% or more.
  • the polyvinyl alcohol-based resin may be modified, for example, polyvinyl formal modified with aldehydes, polyvinyl acetal, polyvinyl butyral, and the like can be used.
  • the degree of polymerization of the polyvinyl alcohol-based resin is usually about 1000 to 10000, and preferably about 1500 to 5000.
  • a film obtained by forming such a polyvinyl alcohol resin is used as an original film of a polarizing film.
  • the method for forming the polyvinyl alcohol-based resin is not particularly limited, and can be formed by a conventionally known appropriate method.
  • the film thickness of the raw film made of the polyvinyl alcohol resin is not particularly limited, but is, for example, about 10 to 150 ⁇ m.
  • a polarizing film is usually a process of dyeing an original film made of polyvinyl alcohol resin as described above with a dichroic dye and adsorbing the dichroic dye (dyeing process), and the dichroic dye is adsorbed.
  • the polyvinyl alcohol-based resin film is produced through a step of treating with a boric acid aqueous solution (boric acid treatment step) and a step of washing with water after the treatment with the boric acid aqueous solution (water washing treatment step).
  • the polyvinyl alcohol-based resin film is usually uniaxially stretched, but this uniaxial stretching may be performed before the dyeing treatment step or during the dyeing treatment step, It may be performed after the dyeing process.
  • this uniaxial stretching may be performed before the boric acid treatment step or during the boric acid treatment step.
  • atmosphere may be sufficient
  • stretches in the state swollen with the solvent may be sufficient.
  • the draw ratio is usually about 3 to 8 times.
  • the dyeing of the polyvinyl alcohol-based resin film with the dichroic dye in the dyeing process is performed, for example, by immersing the polyvinyl alcohol-based resin film in an aqueous solution containing the dichroic dye.
  • the dichroic dye for example, iodine, a dichroic dye or the like is used.
  • dichroic dyes include C.I. I. Dichroic direct dyes composed of disazo compounds such as DIRECT RED 39, dichroic direct dyes composed of trisazo, tetrakisazo compounds and the like are included.
  • the polyvinyl alcohol-type resin film performs the immersion process to water before a dyeing process.
  • iodine When iodine is used as the dichroic dye, a method of dyeing a polyvinyl alcohol-based resin film in an aqueous solution containing iodine and potassium iodide is usually employed.
  • the content of iodine in this aqueous solution is usually 0.01 to 1 part by weight per 100 parts by weight of water, and the content of potassium iodide is usually 0.5 to 20 parts by weight per 100 parts by weight of water. .
  • the temperature of the aqueous solution used for dyeing is usually 20 to 40 ° C.
  • the immersion time (dyeing time) in this aqueous solution is usually 20 to 1800 seconds.
  • a method of immersing and dyeing a polyvinyl alcohol-based resin film in an aqueous solution containing a water-soluble dichroic dye is usually employed.
  • the content of the dichroic dye in this aqueous solution usually, 1 ⁇ 10 -4 ⁇ 10 parts by weight per 100 parts by weight of water, preferably 1 ⁇ 10 -3 ⁇ 1 parts by weight, particularly preferably 1 ⁇ 10 - 3 to 1 ⁇ 10 ⁇ 2 parts by weight.
  • This aqueous solution may contain an inorganic salt such as sodium sulfate as a dyeing assistant.
  • the temperature of the dye aqueous solution used for dyeing is usually 20 to 80 ° C.
  • the immersion time (dyeing time) in this aqueous solution is usually 10 to 1800 seconds. is there.
  • the boric acid treatment step is performed by immersing a polyvinyl alcohol resin film dyed with a dichroic dye in a boric acid-containing aqueous solution.
  • the amount of boric acid in the boric acid-containing aqueous solution is usually 2 to 15 parts by weight, preferably 5 to 12 parts by weight per 100 parts by weight of water.
  • the boric acid-containing aqueous solution used in this boric acid treatment process preferably contains potassium iodide.
  • the amount of potassium iodide in the boric acid-containing aqueous solution is usually 0.1 to 15 parts by weight, preferably 5 to 12 parts by weight, per 100 parts by weight of water.
  • the immersion time in the boric acid-containing aqueous solution is usually 60 to 1200 seconds, preferably 150 to 600 seconds, and more preferably 200 to 400 seconds.
  • the temperature of the boric acid-containing aqueous solution is usually 50 ° C. or higher, preferably 50 to 85 ° C., more preferably 60 to 80 ° C.
  • the polyvinyl alcohol-based resin film after the boric acid treatment described above is washed with water, for example, by immersing it in water.
  • the temperature of water in the water washing treatment is usually 5 to 40 ° C., and the immersion time is usually 1 to 120 seconds.
  • a drying treatment is usually performed to obtain a polarizing film.
  • the drying process can be performed using, for example, a hot air dryer or a far infrared heater.
  • the temperature for the drying treatment is usually 30 to 100 ° C., preferably 50 to 80 ° C.
  • the time for the drying treatment is usually 60 to 600 seconds, preferably 120 to 600 seconds.
  • a polarizing film is obtained by subjecting the polyvinyl alcohol-based resin film to uniaxial stretching, dyeing with a dichroic dye, boric acid treatment and water washing treatment.
  • the thickness of this polarizing film is usually in the range of 5 to 40 ⁇ m.
  • the resin film preferably used for the polarizing plate of the present invention is a diffusion film having light diffusibility.
  • a diffusion film having light diffusibility By using a diffusion film having light diffusibility, a light diffusing function is imparted to the polarizing plate. Therefore, when this is used as the back side polarizing plate of a liquid crystal display device, it is disposed between the liquid crystal cell and the backlight.
  • One or more light diffusion sheets can be omitted.
  • the resin film “has light diffusibility” means that incident light (typically, light from a backlight) is incident from one side of the resin film and passed through the resin film. This means that transmitted light is also observed in a plurality of directions different from the linear transmission direction (straight direction of incident light) on the other surface side of the resin film.
  • the diffusion film having light diffusibility for example, a resin film having one surface having a smooth surface and the other surface having an irregular surface having an irregular shape can be used.
  • smooth surface means that the ten-point average roughness Rz measured according to JIS B 0601-1994 is less than 0.1 ⁇ m
  • uneven surface means JIS B 0601-. It means that the ten-point average roughness Rz measured according to 1994 is 0.1 ⁇ m or more.
  • the ten-point average roughness Rz of the uneven surface is preferably 0.5 ⁇ m or more.
  • the 10-point average roughness Rz is preferably 50 ⁇ m or less, more preferably 20 ⁇ m or less. .
  • the resin film When a resin film (diffusion film) whose one surface is an uneven surface is laminated on a polarizing film, the resin film may be laminated so that the uneven surface faces the polarizing film, or the smooth surface is on the polarizing film. You may laminate
  • the base material of the diffusion film is not particularly limited, and various materials can be used.
  • synthetic polymers such as polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, norbornene resin, polyurethane, polyacrylate, polymethyl methacrylate; natural polymers such as cellulose diacetate and cellulose triacetate
  • the transparent polymer material can be used.
  • These polymer materials can contain additives such as ultraviolet absorbers, antioxidants, and plasticizers as necessary.
  • a method for producing a diffusion film using these transparent polymer materials as a base material for example, a method for containing a diffusing agent in the base film; a method for providing a layer containing a diffusing agent on one side of the base film surface A method of roughening one side of the substrate film surface (giving surface irregularities), and the like.
  • a method for containing a diffusing agent in the base film for example, a method for containing a diffusing agent in the base film; a method for providing a layer containing a diffusing agent on one side of the base film surface
  • a method of roughening one side of the substrate film surface (giving surface irregularities), and the like may be used alone, or two or more methods may be used in combination.
  • the diffusing agent is kneaded in advance into the transparent polymer material to be the base material, and then formed into a film by the casting method or the extrusion method. That's fine.
  • a diffusion film in which one surface is an uneven surface and the other surface is a smooth surface by using a roll having surface unevenness and a roll having a flat surface can be obtained.
  • the transparent polymer material When adopting a method of applying a layer containing a diffusing agent on one side of the base film surface, first, the transparent polymer material was formed into a film by a casting method or an extrusion method, and then the diffusing agent was dispersed.
  • a diffusion film can be manufactured by applying a resin liquid on a base film and drying or curing the resin liquid.
  • a layer containing a diffusing agent is laminated on a base film by a co-extrusion method using a transparent polymer material to be a base film and a transparent polymer material kneaded in advance with a diffusing agent.
  • a diffusion film can also be produced. In the case of these methods, the surface of the layer containing the diffusing agent is usually an uneven surface.
  • the transparent polymer material is formed into a sheet shape by a casting method or an extrusion method, and then, an embossing roll embossing method or sand blasting.
  • the diffusion film can be produced by roughening the surface by the method.
  • the diffusing agent is not particularly limited as long as it is colorless or white particles, and either organic particles or inorganic particles can be used.
  • organic particles include polyolefin resins such as polystyrene, polyethylene, and polypropylene; particles made of a polymer compound such as an acrylic resin, and may be a crosslinked polymer.
  • a copolymer obtained by copolymerizing two or more monomers selected from ethylene, propylene, styrene, methyl methacrylate, benzoguanamine, formaldehyde, melamine, butadiene, and the like can also be used.
  • the inorganic particles include particles made of silica, silicone, titanium oxide, and the like, and glass beads may be used.
  • Examples of the resin liquid used in the method of coating the base film with the resin liquid in which the diffusing agent is dispersed include a solvent volatile or water volatile resin liquid, and a thermosetting or photocurable resin liquid.
  • Solvent volatile or water volatile resin liquids include polymers such as polyacrylate, polymethacrylate, polyvinyl chloride, polyvinyl acetate, cellulose, synthetic rubber, alcohols such as methanol, ethanol, propanol, and isopropanol; methyl Cellosolves such as cellosolve and ethyl cellosolve; aromatic solvents such as toluene and xylene; those dissolved or dispersed in organic solvents such as ethyl acetate and methylene chloride; or water can be used.
  • thermosetting resin liquid a resin liquid obtained by mixing a liquid composed of a compound having an epoxy group and a compound condensed with an epoxy group such as an amine can be used.
  • Photocurable resin liquids include resin liquids in which known radical photopolymerization initiators are added to compounds having acrylate groups, methacrylate groups, aryl groups, etc., or known photocationic polymerization to compounds having vinyl ether groups or epoxy groups. A resin liquid to which an initiator is added can be used. Additives such as ultraviolet absorbers and antioxidants can be added to these resin liquids as necessary.
  • the haze value of the diffusion film is preferably 5% or more and more preferably 15% or more and 90% or less in order to impart a good light diffusion function to the polarizing plate. More preferably, it is 45% or more and 90% or less.
  • the haze of the diffusion film is measured according to JIS K 7136.
  • a diffusion film with a high total light transmittance is so preferable that the brightness
  • the total light transmittance of the diffusion film is preferably 70% or more, more preferably 80% or more, and particularly preferably 85% or more.
  • the total light transmittance of the diffusion film is measured according to JIS K 7361.
  • the thickness of the diffusion film is not particularly limited, but is preferably about 20 ⁇ m or more and 200 ⁇ m or less, and more preferably 30 ⁇ m or more and 100 ⁇ m or less, from the viewpoint of reducing the thickness and weight of the polarizing plate.
  • a resin film having one surface that is a smooth surface and the other surface that has a regular uneven shape may be used as the resin film laminated on the polarizing film. It can.
  • the linear transmission direction (straight direction of incident light) on the other surface side of the resin film is Transmitted light is observed in one different direction.
  • the regular concavo-convex shape include a lenticular shape, a prism shape, and a Fresnel shape. According to the polarizing plate using the resin film having such a regular surface uneven shape, the light emission direction can be adjusted and the luminance can be increased by condensing. Can be omitted.
  • the resin film having a regular surface irregularity shape can be produced by a method such as a photopolymer process method, a profile extrusion method, a press molding method, an injection molding method, or a roll transfer method.
  • a method such as a photopolymer process method, a profile extrusion method, a press molding method, an injection molding method, or a roll transfer method.
  • the same transparent polymer material as that of the diffusion film can be used as that of the diffusion film.
  • the resin film laminated on the polarizing film is preferably a diffusion film having light diffusibility.
  • the surface (outer surface) on the opposite side to the side which opposes the polarizing film shows specific steel wool hardness. Specifically, using # 0000 steel wool, the number of scratches when the outer surface of the resin film was rubbed 10 times under the conditions of a load of 250 g / cm 2 , a stroke width of 5 cm, and a speed of 50 reciprocations / min. The number is 10 or less, preferably 3 or less, and more preferably 0.
  • the resin film surface comes to have sufficient scratch resistance, and when it is a liquid crystal display device, a light diffusion plate adjacent to the resin film of the polarizing plate, It is possible to prevent the resin film surface from being damaged by other optical members such as a light diffusion sheet and a light collecting sheet. Thereby, it is possible to obtain an excellent image quality without causing scratches or unevenness in the image of the liquid crystal display device.
  • the pencil hardness of the surface (outer surface) opposite to the side facing the polarizing film is H or less.
  • the pencil hardness on the surface of the resin film is measured according to JIS K 5600-5-4.
  • the type of base material of the resin film It can be obtained by adjusting the type of diffusing agent, the type of resin component (including a resin precursor such as a monomer component) contained in the resin liquid in which the diffusing agent is dispersed.
  • the type of resin component including a resin precursor such as a monomer component contained in the resin liquid in which the diffusing agent is dispersed.
  • the type of resin component including a resin precursor such as a monomer component contained in the resin liquid in which the diffusing agent is dispersed.
  • Preferable specific examples include, for example, an ultraviolet curable hard coat resin liquid (ultraviolet curable type) in which a transparent resin film such as polyester or acrylic is used as a base film, and a diffusing agent is dispersed on the base film.
  • a resin composition) is applied, and the resin liquid layer is cured by ultraviolet irradiation.
  • the ultraviolet curable hard coat resin liquid include a compound having one polymerizable carbon-carbon double bond such as an acrylate group or a methacrylate group (for example, a monofunctional (meth) acrylate), and a polymerizable carbon-carbon double bond.
  • An ultraviolet curable resin composition containing a crosslinkable compound having two or more (for example, polyfunctional (meth) acrylate) and a photopolymerization initiator can be suitably used.
  • the ultraviolet curable resin composition is a polyfunctional monomer. Those having a curing component are preferably used.
  • the polymerizable functional group possessed by the polyfunctional monomer is preferably a group having a polymerizable carbon-carbon double bond, and examples thereof include acryloyl group, methacryloyl group, vinyl group and allyl group, and acryloyl group. A methacryloyl group is preferred.
  • polyfunctional monomers include ethylene glycol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, ditrimethylolpropane tetra (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth).
  • a monofunctional monomer can be added to the polyfunctional monomer as necessary to adjust the elastic modulus of the hard coat layer or improve adhesion, but the monofunctional monomer in the entire monomer can be added.
  • the proportion is preferably 50% by weight or less, and more preferably 20% by weight or less. If the ratio of the monofunctional monomer is too large, the desired hardness cannot be obtained.
  • As a base film the one where the hardness is low is preferable.
  • the hardness mentioned here refers to the strength against indentation, and is represented by an index such as Vickers hardness, universal hardness, Martens hardness, and the like.
  • the substrate film has a hardness of 130 N / mm 2 or less, preferably 90 N / mm 2 or less, with Martens hardness as an index.
  • a base film for example, polyester films such as polyethylene terephthalate, acrylic films such as polymethyl methacrylate, methyl methacrylate-styrene copolymer, and polyolefin films such as polyethylene and polypropylene can be preferably used.
  • the thickness is preferably about 20 ⁇ m to 200 ⁇ m. Even when using a base film having a low hardness, by using a polyfunctional monomer as a curing component as an ultraviolet curable resin composition, the obtained resin film can exhibit a sufficient steel wool hardness, As a result, a desired effect can be obtained.
  • the base film constituting the resin film and the ultraviolet curable resin composition it is preferable to first select the base film exhibiting appropriate hardness as described above.
  • the pencil hardness and the steel wool hardness of the resin film obtained by applying and curing an arbitrary ultraviolet curable resin composition to the selected base film are evaluated.
  • the steel wool hardness is less than the desired hardness, for example, an ultraviolet curable resin composition with a higher ratio of polyfunctional monomers compared to the above, or a higher number of functional groups per molecule.
  • the steel wool hardness of the resin film can be increased by coating and curing the ultraviolet curable resin composition containing the increased polyfunctional monomer on the base film.
  • UV curing can be performed while blocking oxygen, which is a suitable means for increasing the steel wool hardness of the resulting resin film. It is. If necessary, a resin film having a desired steel wool hardness can be obtained by combining these, or using an ultraviolet curable resin composition having a higher polyfunctional monomer ratio or a higher number of functional groups per molecule.
  • the method for blocking oxygen include a method of curing in a nitrogen atmosphere, a method of pressing a resin or metal against the coated surface of the ultraviolet curable resin composition, and curing in that state.
  • the steel wool hardness of the resin film obtained by selecting the combination of the base film and the ultraviolet curable resin composition by the above procedure is not less than a desired value (the surface of the resin film is steel wool, and the load is 250 g / cm 2.
  • the pencil hardness of the resin film is usually the desired hardness (when expressed as the number of scratches when it is rubbed 10 times under the conditions of a stroke width of 5 cm and a speed of 50 cycles / minute) Pencil hardness H) or less, but if it does not fall within the desired hardness range, it can be adjusted by reducing the use ratio of the polyfunctional monomer within a range that does not affect the steel wool hardness.
  • An adhesive or pressure-sensitive adhesive layer for bonding the liquid crystal cell and the polarizing plate may be formed on the surface of the polarizing film opposite to the surface on which the resin film is bonded.
  • a transparent film such as a protective film or an optical compensation film is laminated on the surface of the polarizing film opposite to the surface on which the resin film is bonded, and an adhesive or pressure-sensitive adhesive layer is formed on the transparent film.
  • the transparent film include cellulose resin films such as a triacetyl cellulose film (TAC film), olefin resin films, acrylic resin films, and polyester resin films such as polyethylene terephthalate.
  • TAC film triacetyl cellulose film
  • acrylic resin films acrylic resin films
  • polyester resin films such as polyethylene terephthalate.
  • an optical functional film described later can be laminated on the transparent film, and an adhesive or pressure-sensitive adhesive layer can be formed on the optical functional film.
  • the cellulose resin constituting the cellulose resin film means a partially esterified product or a completely esterified product of cellulose, and examples thereof include cellulose acetate ester, propionate ester, butyrate ester, and mixed esters thereof. be able to. More specifically, triacetyl cellulose, diacetyl cellulose, cellulose acetate propionate, cellulose acetate butyrate and the like can be mentioned.
  • a known method such as a solvent casting method or a melt extrusion method is appropriately used.
  • Cellulosic resin films can be obtained commercially, for example, “Fujitac TD80” (Fuji Film Co., Ltd.), “Fujitac TD80UF” (Fuji Film Co., Ltd.), “Fujitac TD80UZ” (Fuji Film ( Co., Ltd.), “KC8UX2M” (manufactured by Konica Minolta Opto), “KC8UY” (manufactured by Konica Minolta Opto), and the like.
  • an optical compensation film comprising a cellulose resin film
  • a film containing a compound having a retardation adjusting function in the cellulose resin film a compound having a retardation adjusting function is applied to the surface of the cellulose resin film.
  • a film obtained by uniaxially or biaxially stretching a cellulose resin film is obtained by uniaxially or biaxially stretching a cellulose resin film.
  • optical compensation film made of a commercially available cellulose resin film, for example, “WV Film Wide View Film“ WV BZ 438 ””, “WV Film Wide View Film“ WV EA ””, Konica Minolta manufactured by Fuji Film Co., Ltd. Examples thereof include “KC4FR-1” and “KC4HR-1” manufactured by Opto Corporation.
  • the thickness of the protective film or optical compensation film made of a cellulose resin film is not particularly limited, but is preferably in the range of 20 to 90 ⁇ m, and more preferably in the range of 30 to 90 ⁇ m. When the thickness is less than 20 ⁇ m, it is difficult to handle the film. On the other hand, when the thickness exceeds 90 ⁇ m, the workability is inferior, and it is disadvantageous in reducing the thickness and weight of the resulting polarizing plate.
  • optical compensation film made of the olefin resin film examples include a uniaxially stretched or biaxially stretched cycloolefin resin film.
  • the above-mentioned optical compensation film is a stretched product of a cycloolefin resin film, It is also suitable from the viewpoint of optical characteristics and durability.
  • the cycloolefin resin film is a film made of a thermoplastic resin having a unit of a monomer made of a cyclic olefin (cycloolefin) such as norbornene or a polycyclic norbornene monomer.
  • the cycloolefin-based film may be a hydrogenated product of a ring-opening polymer using a single cycloolefin or a ring-opening copolymer using two or more kinds of cycloolefins. It may also be an addition copolymer with an aromatic compound having a vinyl group. Further, those having a polar group introduced into the main chain or side chain are also effective.
  • thermoplastic cycloolefin-based resins include “Topas” sold by Ticona, Germany, “Arton” sold by JSR Corporation, and “Zeonor” sold by Nippon Zeon Corporation. ZEONOR ”and“ ZEONEX ”,“ APEL ”(both trade names) sold by Mitsui Chemicals, Inc., and the like, which can be suitably used.
  • a cycloolefin resin film can be obtained by forming such a cycloolefin resin.
  • a film forming method a known method such as a solvent casting method or a melt extrusion method is appropriately used.
  • the thickness of the optical compensation film made of a stretched cycloolefin-based resin film is too thick, the processability will be inferior, and the transparency will be reduced, and it will be disadvantageous in reducing the thickness and weight of the polarizing plate.
  • the thickness is preferably about 20 to 80 ⁇ m.
  • An adhesive is usually used for bonding between the polarizing film and the resin film, and bonding between the protective film or the optical compensation film and the polarizing film laminated as necessary.
  • the adhesive used for bonding the resin film and the adhesive used for bonding the protective film or optical compensation film are the same type of adhesive. It may be a different type of adhesive.
  • the adhesive used for laminating these films include water-based adhesives, that is, adhesive components dissolved in water or dispersed in water.
  • a resin composition using a polyvinyl alcohol-based resin or a urethane resin as an adhesive component is a preferable adhesive.
  • the polyvinyl alcohol-based resin is not only partially saponified polyvinyl alcohol and completely saponified polyvinyl alcohol, but also carboxyl group-modified polyvinyl alcohol, acetoacetyl group-modified polyvinyl alcohol, and methylol group-modified polyvinyl. It may be a modified polyvinyl alcohol resin such as alcohol or amino group-modified polyvinyl alcohol.
  • an adhesive having a polyvinyl alcohol resin as an adhesive component is prepared as an aqueous solution of a polyvinyl alcohol resin.
  • the concentration of the polyvinyl alcohol resin in the adhesive is usually 1 to 10 parts by weight, preferably 1 to 5 parts by weight with respect to 100 parts by weight of water.
  • a curable component such as glyoxal or a water-soluble epoxy resin, or a crosslinking agent to an adhesive having a polyvinyl alcohol resin as an adhesive component in order to improve adhesiveness.
  • a water-soluble epoxy resin for example, a polyamide polyamine epoxy resin obtained by reacting a polyalkylene polyamine such as diethylenetriamine or triethylenetetramine with a polycarboxylic acid such as adipic acid and epichlorohydrin. Can be suitably used.
  • the addition amount of the curable component and the crosslinking agent is less than 1 part by weight with respect to 100 parts by weight of the polyvinyl alcohol-based resin, the effect of improving adhesiveness tends to be reduced, and the curable component, When the addition amount of the crosslinking agent exceeds 100 parts by weight with respect to 100 parts by weight of the polyvinyl alcohol resin, the adhesive layer tends to become brittle.
  • a urethane resin When a urethane resin is used as the adhesive component, examples of suitable adhesive compositions include a mixture of a polyester ionomer type urethane resin and a compound having a glycidyloxy group.
  • the polyester ionomer type urethane resin is a urethane resin having a polyester skeleton, and a small amount of an ionic component (hydrophilic component) is introduced into the skeleton.
  • an ionomer-type urethane resin is suitable as a water-based adhesive because it is emulsified directly in water without using an emulsifier to form an emulsion.
  • Polyester ionomer type urethane resins are known per se.
  • JPH07-97504-A describes an example of a polymer dispersant for dispersing a phenolic resin in an aqueous medium
  • JP2005-70140 JP2005-70140
  • a cycloolefin resin film is bonded to a polarizing film made of a polyvinyl alcohol resin using a mixture of a polyester ionomer type urethane resin and a compound having a glycidyloxy group as an adhesive. The form is shown.
  • a generally known method may be used as a method of applying an adhesive to the polarizing film and / or the film (resin film, protective film or optical compensation film) bonded thereto.
  • a casting method a Meyer bar may be used.
  • examples thereof include a coating method, a gravure coating method, a comma coater method, a doctor blade method, a die coating method, a dip coating method, and a spraying method.
  • the casting method is a method of spreading and spreading an adhesive on the surface of a film to be coated while moving it in a substantially vertical direction, a substantially horizontal direction, or an oblique direction between the two.
  • Film bonding using nip rolls is, for example, a method in which an adhesive is applied and then pressurized with a roll or the like to spread uniformly, and after applying an adhesive, it is passed between the rolls and pressed.
  • a method of spreading out can be employed.
  • the plurality of rolls may be made of the same material or different materials.
  • the surface of the adhesive layer may be appropriately subjected to surface treatment such as plasma treatment, corona treatment, ultraviolet irradiation treatment, flame (flame) treatment, saponification treatment, etc. in order to improve adhesion.
  • surface treatment such as plasma treatment, corona treatment, ultraviolet irradiation treatment, flame (flame) treatment, saponification treatment, etc.
  • saponification treatment include a method of immersing in an aqueous alkali solution such as sodium hydroxide or potassium hydroxide.
  • the polarizing plate can be obtained by drying and curing the adhesive layer.
  • This drying treatment is performed, for example, by blowing hot air, and the temperature is usually in the range of 40 to 100 ° C., and preferably in the range of 60 to 100 ° C.
  • the drying time is usually 20 to 1200 seconds.
  • the thickness of the adhesive layer after drying is usually 0.001 to 5 ⁇ m, preferably 0.01 to 2 ⁇ m, more preferably 0.01 to 1 ⁇ m.
  • the thickness of the adhesive layer is less than 0.001 ⁇ m, the adhesion may be insufficient, and when the thickness of the adhesive layer exceeds 5 ⁇ m, the appearance of the polarizing plate may be poor.
  • sufficient adhesive strength may be obtained by curing at room temperature or higher for at least half a day, preferably several days or longer.
  • the preferable curing temperature is in the range of 30 to 50 ° C, more preferably 35 to 45 ° C. When the curing temperature exceeds 50 ° C., so-called “roll tightening” is likely to occur in the roll winding state.
  • the humidity during curing is not particularly limited, and the relative humidity may be in the range of 0 to 70% RH.
  • the curing time is usually 1 to 10 days, preferably 2 to 7 days.
  • a photo-curable adhesive can be used as the adhesive.
  • a photocurable adhesive agent mixtures, such as a photocurable epoxy resin and a photocationic polymerization initiator, are mentioned, for example.
  • a photocurable adhesive is hardened by irradiating an active energy ray.
  • the light source of the active energy ray is not particularly limited, but an active energy ray having a light emission distribution at a wavelength of 400 nm or less is preferable.
  • the low-pressure mercury lamp, the medium-pressure mercury lamp, the high-pressure mercury lamp, the ultrahigh-pressure mercury lamp, the chemical lamp, and the black light lamp A microwave excitation mercury lamp, a metal halide lamp and the like are preferable.
  • the light irradiation intensity to the photocurable adhesive is appropriately determined depending on the composition of the photocurable adhesive and is not particularly limited, but the irradiation intensity in the wavelength region effective for activating the polymerization initiator is 0.1 to 6000 mW. / Cm 2 is preferable.
  • the irradiation intensity is 0.1 mW / cm 2 or more, the reaction time does not become too long, and when the irradiation intensity is 6000 mW / cm 2 or less, the heat radiated from the light source and the time of curing of the photocurable adhesive are reduced. There is little risk of yellowing of the epoxy resin or deterioration of the polarizing film due to heat generation.
  • the light irradiation time to the photocurable adhesive is controlled for each photocurable adhesive to be cured and is not particularly limited.
  • the integrated light amount expressed as the product of the irradiation intensity and the irradiation time is 10. It is preferably set to be ⁇ 10000 mJ / m 2 .
  • the cumulative amount of light to the photo-curable adhesive is 10 mJ / m 2 or more, a sufficient amount of active species derived from the polymerization initiator can be generated and the curing reaction can proceed more reliably, and 10,000 mJ / m. By being 2 or less, irradiation time does not become too long and favorable productivity can be maintained.
  • various functions of the polarizing plate such as the degree of polarization of the polarizing film, the transmittance and the hue, and the transparency of the resin film, the protective film and the optical compensation film are reduced. It is preferable to perform the curing under conditions that do not.
  • the surface of the polarizing film opposite to the side on which the resin film is laminated (on the film when the protective film or the optical compensation film is laminated) has an adhesive layer. It is preferable.
  • a conventionally known appropriate pressure-sensitive adhesive can be used without particular limitation, and examples thereof include an acrylic pressure-sensitive adhesive, a urethane pressure-sensitive adhesive, and a silicone pressure-sensitive adhesive. Among these, an acrylic pressure-sensitive adhesive is preferably used from the viewpoints of transparency, adhesive strength, reliability, reworkability, and the like.
  • the pressure-sensitive adhesive layer can be provided by a method in which such a pressure-sensitive adhesive is, for example, an organic solvent solution, which is applied on a base film (for example, a polarizing film) by a die coater or a gravure coater, and dried. It can also provide by the method of transcribe
  • the thickness of the pressure-sensitive adhesive layer is not particularly limited, but is generally preferably in the range of 2 to 40 ⁇ m.
  • An optical functional film may be attached to the surface of the polarizing plate on which the pressure-sensitive adhesive layer is formed via the pressure-sensitive adhesive layer.
  • an optical functional film for example, an optical compensation film in which a liquid crystal compound is coated on a substrate surface and oriented; a reflection type that transmits a certain kind of polarized light and reflects polarized light that shows the opposite property Polarizing film; Retardation film made of polycarbonate-based resin; Retardation film made of cyclic polyolefin-based resin; Film with anti-glare function having uneven shape on surface; Film with surface anti-reflection function; Reflecting film having reflection function on surface; And a transflective film having both a reflection function and a transmission function.
  • phase difference film which consists of cyclic polyolefin resin
  • Article film made by JSR Corporation
  • Essina made by Sekisui Chemical Co., Ltd.
  • Zeonor film (Manufactured by Optes Co., Ltd.).
  • the polarizing plate of the present invention can be suitably used as a back-side polarizing plate disposed between a liquid crystal cell provided in a liquid crystal display device and a backlight.
  • the liquid crystal panel of the present invention comprises a liquid crystal cell and the polarizing plate of the present invention laminated on the liquid crystal cell, and the liquid crystal cell and the polarizing plate are the surfaces on which the resin film in the polarizing film is laminated. It is bonded via the pressure-sensitive adhesive layer so that the opposite surface faces the liquid crystal cell (that is, the resin film forms the outer surface of the liquid crystal panel).
  • a liquid crystal panel of the present invention is applied to a liquid crystal display device such that the resin film is on the backlight side (so that the polarizing plate of the present invention is disposed between the liquid crystal cell and the backlight).
  • a polarizing plate is provided on the front side of the liquid crystal cell (the viewing side when applied to a liquid crystal display device and the side opposite to the side on which the polarizing plate of the present invention is laminated).
  • the polarizing plate provided on the front side of the liquid crystal cell is not particularly limited, and any conventionally known appropriate polarizing plate can be used.
  • the polarizing plate etc. which the glare-proof process, the hard-coat process, and the antireflection process were given are mentioned.
  • surface of the polarizing film may be sufficient.
  • the liquid crystal display device of the present invention includes a liquid crystal panel arranged so that the resin film of the polarizing plate of the present invention is on the backlight side.
  • a liquid crystal display device of the present invention is provided with a liquid crystal panel in which the polarizing plate of the present invention is bonded to the back side of the liquid crystal cell, so that the image has no scratches or unevenness and has excellent image quality and is compatible with thinning.
  • it has sufficient mechanical strength, and further, because the resin film of the polarizing plate of the present invention is arranged on the back side of the liquid crystal panel, it can prevent adhesion between the liquid crystal panel and the backlight system, Visibility has been improved. Moreover, damage to other optical members adjacent to the resin film can be prevented.
  • the backlight, the light diffusion plate, and the liquid crystal panel of the present invention As the configuration other than the liquid crystal panel, an appropriate configuration of a conventionally known liquid crystal display device can be adopted.
  • the backlight, the light diffusion plate, and the liquid crystal panel of the present invention The structure provided in order and the structure provided with a backlight, a light diffusing plate, a light diffusing sheet, and the liquid crystal panel of this invention in this order can be mentioned.
  • the liquid crystal panel is arranged so that the resin film of the polarizing plate of the present invention faces the light diffusion plate.
  • the resin film of the polarizing plate of the present invention faces the light diffusion sheet.
  • another optical member such as a light collecting sheet may be disposed between the backlight and the liquid crystal panel as necessary.
  • liquid crystal display device of the present invention when a diffusion film having light diffusibility is used as the resin film, light diffusion is imparted to the polarizing plate itself of the present invention used on the back side. Part or all of the light diffusing sheet provided on the diffusing plate can be omitted, which makes it possible to reduce the thickness and weight of the liquid crystal display device. Further, when a resin film other than a diffusion film having light diffusibility (a resin film having a regular uneven shape) is used as the resin film, the light emission direction is adjusted and the brightness is increased by condensing. Therefore, the visibility can be improved and the light collecting sheet can be omitted.
  • a resin film other than a diffusion film having light diffusibility a resin film having a regular uneven shape
  • steel wool hardness (the number of scratches when rubbed with steel wool) on the outer surface of the diffusion film is measured under the following conditions and visually observed.
  • Steel wool model number # 0000 Shape of the portion (frictional) that contacts the outer surface of the diffusion film of steel wool: a square of 2 cm on the side (area 4 cm 2 ), and steel wool fibers are arranged in parallel with the sides, and reciprocating in the fiber direction.
  • Load on steel wool 250 g / cm 2 (1000 g / 4 cm 2 )
  • Stroke width of steel wool 5cm (reciprocation 10cm)
  • Speed during reciprocating friction 50 reciprocations / min (500 cm / min).
  • the pencil hardness of the outer surface of the diffusion film is measured with a load of 500 g using an electric pencil scratch hardness tester (No.553-M, manufactured by Yasuda Seiki Seisakusho Co., Ltd.) in accordance with JIS K 5600-5-4. It was measured.
  • Pentaerythritol triacrylate 60 parts Polyfunctional urethanized acrylate (reaction product of hexamethylene diisocyanate and pentaerythritol triacrylate) 40 parts Next, 100 parts by weight of the solid content of the ultraviolet curable resin composition is subjected to photopolymerization. 5 parts by weight of initiator “Lucirin TPO” (manufactured by BASF, chemical name: 2,4,6-trimethylbenzoyldiphenylphosphine oxide), acrylic organic fine particles (manufactured by Soken Chemical Co., Ltd., average particle size 8 ⁇ m) , Refractive index 1.55) 11.25 parts by weight were added to prepare a coating solution.
  • initiator “Lucirin TPO” manufactured by BASF, chemical name: 2,4,6-trimethylbenzoyldiphenylphosphine oxide
  • acrylic organic fine particles manufactured by Soken Chemical Co., Ltd., average particle size 8 ⁇ m
  • Refractive index 1.55 11.25 parts
  • This coating solution is coated on a commercially available polyethylene terephthalate film (thickness 38 ⁇ m) so that the cured resin layer has a thickness of 10 ⁇ m, dried, and then cured by UV irradiation to cure on the polyethylene terephthalate film.
  • a diffusion film A on which a resin layer was formed was obtained.
  • the pencil hardness of the outer surface of the obtained diffusion film A (the surface opposite to the side bonded to the polarizing film and the surface of the cured resin layer in which the diffusing agent is dispersed) was H. Further, the number of scratches when the outer surface of the obtained diffusion film A was rubbed with steel wool under the above conditions was one.
  • the pencil hardness of the outer surface (fine irregular surface) of the obtained diffusion film B was B. Further, when the outer surface of the obtained diffusion film B was rubbed with steel wool under the above conditions, at least 50 or more scratches were confirmed.
  • Example 1 On one surface of the polarizing film obtained in Production Example 1 above, the diffusion film A obtained in Production Example 2 was applied, and on the other surface of the polarizing film, a triacetyl cellulose film (thickness 80 ⁇ m, Konica Minolta Opto Co., Ltd.). Were made using a photocurable adhesive, and the adhesive was cured by irradiation of ultraviolet rays to obtain a polarizing plate. An acrylic pressure-sensitive adhesive layer having a thickness of 25 ⁇ m was provided on the outer surface of the triacetyl cellulose film of the polarizing plate.
  • the polarizing plate is placed on the back of the liquid crystal cell via the adhesive layer, and a commercially available polarizing plate is placed on the front of the liquid crystal cell to assemble a liquid crystal panel.
  • a liquid crystal display device was manufactured in combination with a light.
  • the liquid crystal panel is configured such that the diffusion film A side faces the prism film.
  • the liquid crystal panel was slid and adjusted on the prism film in order to accurately determine the position where the liquid crystal panels were overlapped. When the display image of the liquid crystal display device was visually observed, an image having no scratches or unevenness was obtained, and the visibility was good.
  • ⁇ Comparative Example 1> Instead of the diffusion film A obtained in Production Example 2, a polarizing plate was obtained in the same manner as in Example 1 except that the diffusion film B obtained in Production Example 3 was used, and this was used in the same manner as in Example 1. Thus, a liquid crystal display device was produced. When the display image of the liquid crystal display device was visually observed, only an image showing scratches and unevenness was obtained, and the visibility was poor. After the observation, the liquid crystal panel was taken out from the liquid crystal display device, and the surface (the outer surface of the diffusion film B) was observed. As a result, scratches were observed on the surface.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Polarising Elements (AREA)
  • Liquid Crystal (AREA)

Abstract

La présente invention concerne un polariseur destiné à être disposé sur le côté arrière et qui comprend un film polarisant constitué d'un film de résine d'alcool polyvinylique à étirement uniaxe sur lequel est adsorbé et orienté un colorant dichroïque; et un film de résine superposé sur au moins un côté du film polarisant. Lorsque la surface du film de résine sur le côté opposé au film polarisant est frottée à la laine d'acier de façon à réaliser 10 allers et retours dans les conditions d'une charge de 250 g/cm², d'une largeur de course de 5 cm et d'une vitesse de 50 allers et retours/minute, la surface comporte 10 éraflures ou moins. Le polariseur doit être disposé entre la cellule de cristaux liquides et le rétroéclairage d'un dispositif d'affichage à cristaux liquides. L'invention concerne également un panneau à cristaux liquides et un dispositif d'affichage à cristaux liquides qui comprennent le polariseur.
PCT/JP2010/052131 2009-02-10 2010-02-08 Polariseur, panneau à cristaux liquides et dispositif d'affichage à cristaux liquides les comprenant Ceased WO2010093030A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020117018448A KR101751543B1 (ko) 2009-02-10 2010-02-08 편광판, 및 그것을 이용한 액정 패널 및 액정 표시 장치

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009028895 2009-02-10
JP2009-028895 2009-02-10

Publications (1)

Publication Number Publication Date
WO2010093030A1 true WO2010093030A1 (fr) 2010-08-19

Family

ID=42561871

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2010/052131 Ceased WO2010093030A1 (fr) 2009-02-10 2010-02-08 Polariseur, panneau à cristaux liquides et dispositif d'affichage à cristaux liquides les comprenant

Country Status (4)

Country Link
JP (1) JP2010211196A (fr)
KR (1) KR101751543B1 (fr)
TW (1) TWI477827B (fr)
WO (1) WO2010093030A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200393399A1 (en) * 2018-03-30 2020-12-17 Sumitomo Chemical Company, Limited Sensor and production method for same

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10483077B2 (en) 2003-04-25 2019-11-19 Rapiscan Systems, Inc. X-ray sources having reduced electron scattering
JP6049645B2 (ja) 2013-03-27 2016-12-21 日東電工株式会社 偏光板、液晶表示装置、及び、偏光板の製造方法
TWI647476B (zh) * 2014-07-29 2019-01-11 日商住友化學股份有限公司 偏光板、附有黏著劑之偏光板及液晶顯示裝置
CN106468797B (zh) 2015-08-18 2020-04-14 住友化学株式会社 用于曲面图像显示面板的偏振板
JP6067895B1 (ja) 2015-08-18 2017-01-25 住友化学株式会社 曲面画像表示パネル用偏光板
JP6143917B2 (ja) * 2015-08-18 2017-06-07 住友化学株式会社 曲面画像表示パネル用凸面側偏光板
CN113900163B (zh) * 2015-08-18 2025-02-25 三菱化学株式会社 聚乙烯醇系薄膜和使用其的偏光膜
JP6100876B1 (ja) 2015-10-02 2017-03-22 住友化学株式会社 偏光板用保護フィルム

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000075136A (ja) * 1998-09-01 2000-03-14 Nitto Denko Corp 光拡散偏光板
JP2008015500A (ja) * 2006-06-09 2008-01-24 Fujifilm Corp 偏光板用保護フィルム
JP2008058348A (ja) * 2006-08-29 2008-03-13 Toray Ind Inc 偏光子保護フィルム

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09290490A (ja) * 1996-04-26 1997-11-11 Tomoegawa Paper Co Ltd 防眩材料及びそれを使用した偏光フィルム
JP2000075135A (ja) * 1998-09-01 2000-03-14 Nitto Denko Corp 光拡散偏光板
JP2001100013A (ja) * 1999-09-29 2001-04-13 Fuji Photo Film Co Ltd マット性光学フィルム
JP2001042125A (ja) * 1999-08-04 2001-02-16 Nitto Denko Corp 偏光部材、光学部材及び液晶表示装置
JP2006330705A (ja) * 2005-04-28 2006-12-07 Fujifilm Holdings Corp 光拡散フィルム、反射防止フィルム、並びにそのような光拡散フィルムまたは反射防止フィルムを用いた偏光板及び画像表示装置
JP5134799B2 (ja) * 2005-09-21 2013-01-30 富士フイルム株式会社 光学フィルム、偏光板、および画像表示装置
US20070065602A1 (en) * 2005-09-21 2007-03-22 Fuji Photo Film Co., Ltd. Optical film, polarizing plate and image display device
JP2007133384A (ja) * 2005-10-13 2007-05-31 Fujifilm Corp 防眩フィルム、偏光板、および画像表示装置
JP2008003541A (ja) * 2006-01-27 2008-01-10 Fujifilm Corp 偏光板保護フィルムとそれを用いた偏光板及び液晶表示装置
JP2007272208A (ja) * 2006-03-06 2007-10-18 Nippon Shokubai Co Ltd 光拡散シートおよび光拡散板、ならびにそれらを用いたバックライトユニットおよび液晶表示装置
KR100940433B1 (ko) * 2006-12-29 2010-02-10 주식회사 엘지화학 반사방지 코팅 조성물 및 이것을 이용하여 제조된 반사방지필름

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000075136A (ja) * 1998-09-01 2000-03-14 Nitto Denko Corp 光拡散偏光板
JP2008015500A (ja) * 2006-06-09 2008-01-24 Fujifilm Corp 偏光板用保護フィルム
JP2008058348A (ja) * 2006-08-29 2008-03-13 Toray Ind Inc 偏光子保護フィルム

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200393399A1 (en) * 2018-03-30 2020-12-17 Sumitomo Chemical Company, Limited Sensor and production method for same
US11892423B2 (en) * 2018-03-30 2024-02-06 Sumitomo Chemical Company, Limited Sensor and production method for same

Also Published As

Publication number Publication date
KR101751543B1 (ko) 2017-07-11
TW201037376A (en) 2010-10-16
TWI477827B (zh) 2015-03-21
KR20110113743A (ko) 2011-10-18
JP2010211196A (ja) 2010-09-24

Similar Documents

Publication Publication Date Title
TWI477827B (zh) 偏光板、使用該偏光板之液晶面板及液晶顯示裝置
JP6100876B1 (ja) 偏光板用保護フィルム
JP6143917B2 (ja) 曲面画像表示パネル用凸面側偏光板
CN101487911B (zh) 偏振板及使用其的液晶显示装置
CN101458357A (zh) 偏振板组以及使用其的液晶面板及液晶显示装置
JP2009169389A (ja) 偏光板のセット、ならびにこれを用いた液晶パネルおよび液晶表示装置
JP2009157347A (ja) 偏光板のセット、ならびにこれを用いた液晶パネルおよび液晶表示装置
JP5120728B2 (ja) 偏光板、ならびにこれを用いた液晶パネルおよび液晶表示装置
JP2010217844A (ja) 偏光板のセット、ならびにこれを用いた液晶パネルおよび液晶表示装置
JP5258016B2 (ja) 偏光板のセット、ならびにこれを用いた液晶パネルおよび液晶表示装置
WO2010143742A1 (fr) Dispositif d'affichage à cristaux liquides
CN101452091B (zh) 偏振板及使用其的液晶显示装置
WO2010143741A1 (fr) Dispositif d'affichage à cristaux liquides
KR102169534B1 (ko) 편광판 세트, 그리고 이것을 사용한 액정 패널 및 액정 표시 장치
JP2010185968A (ja) 偏光板、ならびにそれを用いた液晶パネルおよび液晶表示装置
KR20090057913A (ko) 편광판의 세트, 그리고 이것을 사용한 액정 패널 및 액정 표시 장치
JP2017126057A (ja) 曲面画像表示パネル用偏光板
JP2010185969A (ja) 偏光板、ならびにそれを用いた液晶パネルおよび液晶表示装置
JP2010085627A (ja) 偏光板、ならびにそれを用いた液晶パネルおよび液晶表示装置
CN101655574A (zh) 偏振片
JP2010231022A (ja) 偏光板、ならびにそれを用いた液晶パネルおよび液晶表示装置
JP2013210640A (ja) 偏光板のセット、ならびにこれを用いた液晶パネルおよび液晶表示装置

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: 10741307

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 20117018448

Country of ref document: KR

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10741307

Country of ref document: EP

Kind code of ref document: A1