WO2017111276A1 - Plaque de polarisation, procédé de fabrication de cette plaque, et dispositif d'affichage incluant cette plaque - Google Patents

Plaque de polarisation, procédé de fabrication de cette plaque, et dispositif d'affichage incluant cette plaque Download PDF

Info

Publication number
WO2017111276A1
WO2017111276A1 PCT/KR2016/011622 KR2016011622W WO2017111276A1 WO 2017111276 A1 WO2017111276 A1 WO 2017111276A1 KR 2016011622 W KR2016011622 W KR 2016011622W WO 2017111276 A1 WO2017111276 A1 WO 2017111276A1
Authority
WO
WIPO (PCT)
Prior art keywords
polarizer
layer
polarizing plate
weight
blocking layer
Prior art date
Application number
PCT/KR2016/011622
Other languages
English (en)
Korean (ko)
Inventor
심대섭
한승길
Original Assignee
삼성에스디아이 주식회사
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 삼성에스디아이 주식회사 filed Critical 삼성에스디아이 주식회사
Publication of WO2017111276A1 publication Critical patent/WO2017111276A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
    • C08L33/08—Homopolymers or copolymers of acrylic acid esters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/11—Anti-reflection coatings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • 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
    • G02F1/133—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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light

Definitions

  • the present invention relates to a display device including a polarizing plate, a polarizing plate manufacturing method, and a polarizing plate.
  • a liquid crystal display or an organic luminescence device optically modulates the transmitted light according to an input image signal or self-luminesces luminance pixels according to the image signal. By doing so, a gradation is obtained for each pixel.
  • the layer which modulates such transmitted light and light emission luminance for each pixel is called a modulation function layer.
  • the liquid crystal layer corresponds to the modulation function layer
  • the organic EL light emitting layer corresponds to the modulation function layer.
  • liquid crystal layer is not a light valve that completely blocks light by itself
  • polarizing plates may be disposed on both sides of the liquid crystal layer in the up and down direction of the liquid crystal layer, that is, the backlight side and the viewer's viewing side. have.
  • the organic light emitting element does not arrange the polarizing plate for the purpose of shielding light emission.
  • external light may be reflected by the metal wires inside, which causes a decrease in contrast, and thus, a polarizing plate is disposed to prevent this.
  • an object of the present invention is to provide a polarizing plate having excellent durability and excellent UV blocking function and a display device including the same.
  • a polarizing plate for achieving the above object includes a polarizer, a polarizer protective film disposed on at least one surface of the polarizer, and an ultraviolet blocking layer interposed between the polarizer and the polarizer protective film.
  • the UV blocking layer is benzophenone-based, benzotriazole-based, salicylate-based, cyanoacrylate-based, oxanilide-based, triazine ( Triazine) may include any one or more ultraviolet absorbers.
  • the UV absorber may be included in about 0.2% by weight to about 10% by weight in the UV blocking layer.
  • the UV blocking layer may further include a (meth) acrylate monomer, a UV initiator and an additive.
  • the additive may include any one or more of a light stabilizer, a quencher, and an antioxidant.
  • the UV blocking layer may include about 90% to about 96% by weight (meth) acrylate monomer, about 1% to about 5% by weight UV initiator, and about 0.1% to about 3% by weight additives. have.
  • the polarizer protective film may not include the ultraviolet absorber.
  • the polarizer may further include a functional layer disposed on one surface of the protective film, the functional layer may be a hard coating layer (Hard-Coating Layer), an anti-reflection layer, an anti-glare layer (Anti-Glare Layer) At least one of an anti-static layer and a diffusion layer may be included.
  • Hard-Coating Layer Hard-Coating Layer
  • Anti-Glare Layer anti-glare layer
  • At least one of an anti-static layer and a diffusion layer may be included.
  • the polarizing plate may have a light transmittance of about 2% or less at a wavelength of 370 nm.
  • the polarizing plate may have a light transmittance of about 380 nm or less about 10% or less.
  • the polarizing plate manufacturing method for achieving the above object is a step of preparing a polarizer protective film, coating a UV blocking layer on one surface of the polarizer protective film, the adhesive on one surface of the UV blocking layer And applying a polarizer to one surface of the UV blocking layer.
  • the UV blocking layer is benzophenone-based, benzotriazole-based, salicylate-based, cyanoacrylate-based, oxanyl It may be performed by a coating composition including any one or more ultraviolet absorbers of an oxanilide system and a triazine system.
  • the coating composition is about 0.01% to about 1% by weight of the ultraviolet absorber, about 5% to about 10% by weight of the (meth) acrylate monomer, about 0.1% to about 0.5% by weight of the UV initiator, about 85% by weight of the solvent. % To about 90% by weight, and about 0.01% to about 0.3% by weight additives.
  • the method may further include forming a functional layer on the other surface of the polarizer protective film, and the functional layer may include a hard coating layer, an anti-reflection layer, and an anti-glare layer. Layer) and a diffusion layer.
  • a display device includes a display panel configured to display an image according to an applied signal, and at least one polarizer disposed on at least one surface of the display panel.
  • the above polarizing plate contains the above-mentioned polarizing plate.
  • the display device may further include a backlight unit positioned below the display panel to provide light, wherein the display panel is configured of a liquid crystal cell, and the polarizer may be an upper polarizer disposed above the liquid crystal cell, and a lower portion of the liquid crystal cell and the A lower polarizer may be disposed on the backlight unit, and the UV blocking layer may be disposed on the viewer side of the upper polarizer based on the polarizer.
  • the polarizer may be an upper polarizer disposed above the liquid crystal cell, and a lower portion of the liquid crystal cell and the A lower polarizer may be disposed on the backlight unit, and the UV blocking layer may be disposed on the viewer side of the upper polarizer based on the polarizer.
  • the display panel may be configured of an organic light emitting display panel, the polarizing plate may be disposed on the viewing side of the organic light emitting display panel, and the ultraviolet blocking layer may be disposed on the viewing side of the polarizing plate based on the polarizer.
  • the polarizing plate of the present invention maintains high hardness and has excellent durability while excellent UV blocking ability. Therefore, durability and UV blocking ability of the display device including the same may be improved.
  • the polarizing plate manufacturing method of the present invention is excellent in processability, the polarizing plate manufacturing method can produce a polarizing plate excellent in UV resistance and excellent durability as described above.
  • FIG. 1 is a cross-sectional view schematically showing a polarizing plate according to an embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view of a polarizer according to another exemplary embodiment of the present invention.
  • 3 and 4 are cross-sectional views schematically showing a polarizing plate according to another embodiment of the present invention.
  • FIG. 5 is a schematic cross-sectional view of a display device according to an exemplary embodiment.
  • references to elements or layers "on" other elements or layers include all instances where another layer or other element is directly over or in the middle of another element. Like reference numerals refer to like elements throughout.
  • first, second, etc. are used to describe various components, these components are of course not limited by these terms. These terms are only used to distinguish one component from another. Therefore, of course, the first component mentioned below may be a second component within the technical spirit of the present invention.
  • FIG. 1 is a cross-sectional view of a polarizer according to an embodiment of the present invention.
  • a polarizer according to an embodiment will be described with reference to FIG. 1.
  • Polarizer according to an embodiment of the present invention is a polarizer 100, a polarizer protective film 300 disposed on at least one surface of the polarizer 100, interposed between the polarizer 100 and the polarizer protective film 300
  • the ultraviolet shielding layer 200 is included.
  • the polarizer 100 is a film that can be converted from natural light or polarized light into arbitrary polarized light, and can generally be converted to specific linearly polarized light.
  • dichroic substances such as iodine or dichroic dye are adsorbed and stretched onto hydrophilic polymer films such as polyvinyl alcohol-based films, partially formalized polyvinyl alcohol-based films, and ethylene-vinyl acetate copolymer-based partially saponified films.
  • hydrophilic polymer films such as polyvinyl alcohol-based films, partially formalized polyvinyl alcohol-based films, and ethylene-vinyl acetate copolymer-based partially saponified films.
  • polyene type oriented films such as the thing of the dehydration process of filivinyl alcohol, and the dehydrochlorination process of polyvinyl chloride, etc. are mentioned, it is not limited only to these.
  • polyvinyl alcohol-based films which may have a high degree of polarization and contain i
  • the UV blocking layer 200 of the present invention is disposed as a separate layer between the polarizer 100 and the polarizer protective film 300, the polarizer protective film 300 does not include a UV absorber. That is, since the UV blocking layer 200 is disposed separately between the polarizer 100 and the polarizer protective film 300, the polarizer protective film 300 does not need to be separately disposed with an ultraviolet absorber that blocks ultraviolet rays. When the ultraviolet absorber is included in the polarizer protective film 300, the process of manufacturing the polarizer protective film may not be easy. In addition, by including the ultraviolet absorber in the polarizer protective film, the optical properties may be lowered, the polarizer protective film is softened by the characteristics of the ultraviolet absorber, and durability may be lowered.
  • the ultraviolet ray shielding layer 200 is disposed between the polarizer 100 and the polarizer protective film 300, it exhibits a function of blocking ultraviolet rays while maintaining the characteristics of the polarizer protective film 300. It may not be lowered. Therefore, it is possible to provide a polarizing plate having excellent UV blocking and absorbing ability, high durability, and excellent optical characteristics. Moreover, since the ultraviolet blocking layer 200 is arrange
  • the UV blocking layer is benzophenone-based, benzotriazole-based, salicylate-based, cyanoacrylate-based, oxanilide-based, triazine, and triazine. Any one or more ultraviolet absorbers of the system may be included.
  • the ultraviolet absorber may be included in about 0.2% by weight to about 10% by weight in the UV blocking layer.
  • the ultraviolet absorbent may be included in about 0.3% by weight to about 6% by weight, or about 0.3% by weight to about 1% by weight. It is excellent in compatibility with other resin in the said range, and can exhibit the outstanding ultraviolet blocking and absorption ability.
  • the UV blocking layer may further include a (meth) acrylate monomer, a UV initiator and an additive.
  • the (meth) acrylate monomers may be mono, di, tri or more functional monomers, acrylic esters, epoxy (meth) acrylate oligomers (Epoxy (Meth) Acrylate oligomers, polyester acrylate oligomers, urethane oligomers, urethane-amine modified oligomers, acrylic oligomers, and allyllic oligomers. It may include any one or more of the UV curable resin or thermosetting resin is configured.
  • the (meth) acrylate monomer may be included in about 90% by weight to about 96% by weight in the UV blocking layer.
  • the (meth) acrylate monomer may be included, for example, about 93% to about 95% by weight. Combination of the monomer or oligomer can form a coating layer excellent in curability and processability.
  • the UV initiators include alpha-hydroxyl ketones, phenylglyoxylates, alpha-amino ketones, phosphine oxides, and indium salts. It may include any one or more of the (Indonium salt) system.
  • the UV blocking layer may be included in the range of about 1% by weight to about 5% by weight.
  • the UV initiator may be included, for example, in the range of about 3% by weight to about 5% by weight.
  • Such UV initiators are highly reactive in H lamp conditions and are advantageous for coating film formation.
  • the UV initiator may be initiated by UV in the area not absorbed by the ultraviolet absorber.
  • the additive may further include any one or more of a light stabilizer, a quencher, and an antioxidant.
  • the light stabilizer may include any one or more of HLS (Hindered Amine Light Stabilizer) -based and nickel derivatives, and the antioxidant component is Phosphite-based, Sulfur-based and Phenolic It may include any one or more of the system.
  • the additive may maximize the sunscreen effect when used in combination with the ultraviolet absorbent.
  • the additive may be included, for example, in the range of about 0.1% to about 3% by weight or in the range of about 0.5% to about 2.5% by weight. In the above range it can maximize the sunscreen effect.
  • an adhesive layer 10 may be interposed between the polarizer 100 and the UV blocking layer 200 to stack the polarizer 100 and the UV blocking layer 200 with each other. That is, the polarizer may have a structure in which the polarizer 100, the adhesive layer 10, the UV blocking layer 200, and the polarizer protective film 300 are sequentially stacked.
  • the adhesive layer 10 may include an aqueous adhesive, but is not limited thereto, and may include an ultraviolet curable adhesive.
  • the water-based adhesive may include at least one selected from the group consisting of polyvinyl alcohol-based resins and vinyl acetate-based resins, or may include polyvinyl alcohol-based resins having a hydroxyl group, but is not limited thereto.
  • the ultraviolet curing adhesive may include an acrylic compound, for example, may be acrylic, urethane-acrylic, epoxy-based.
  • the present invention is not limited thereto.
  • the polarizing plate may have a light transmittance of about 370 nm wavelength of about 2% or less, for example, about 1% or less.
  • the polarizing plate may have a transmittance of light of 380 nm wavelength of about 10% or less, for example, about 8% or less or about 5% or less.
  • ultraviolet rays introduced from the outside may be effectively blocked, and the display device may be prevented from malfunctioning by ultraviolet rays, and deterioration of elements inside the display device may be prevented.
  • the UV blocking layer 200 may have a thickness of about 20 ⁇ m or less, for example, greater than about 0 ⁇ m and about 20 ⁇ m or less, about 1 ⁇ m to about 20 ⁇ m, and about 4 ⁇ m to about 20 ⁇ m. In the above range, there is an ultraviolet ray blocking effect, it is possible to secure a pencil hardness of 2H or more.
  • FIG. 2 is a cross-sectional view of a polarizer according to another embodiment of the present invention.
  • the polarizer may further include a functional layer 400 disposed on one surface of the polarizer protective film 300.
  • the functional layer 400 may include at least one or more of a hard-coating layer, an anti-reflection layer, an anti-glare layer, and a diffusion layer, preferably a hard coating layer. Can be.
  • the functional layer 400 may be formed on one surface of the polarizer protective film 300, that is, the surface opposite to the surface where the polarizer 100 and the UV blocking layer 200 are disposed in the polarizer protective film 300.
  • the functional layer 400 the hard coating layer can improve the wet heat durability of the polarizing plate and prevent the dimensional change
  • the anti-reflection layer can reduce the reflection by extinguishing the light of the light incident from the outside
  • the anti-glare layer may induce diffusion and reflection of light incident from the outside to prevent glare.
  • the antistatic layer may dissipate static electricity that may be generated in a process or daily life, thereby preventing deformation and function of elements in the display device from being degraded.
  • the UV blocking layer 200 is separately disposed between the polarizer 100 and the polarizer protective film 300, and the polarizer protective film 300. Since it is not disposed between the functional layers 400, the excellent hardness of the hard coating layer can be maintained as it is. Referring to the case in which a layer having a UV blocking function is formed between the hard coating layer and the polarizer protective film for comparison with the present invention, in such a case, the hardness of the hard coating layer may be weakened by the layer having the UV blocking function, Overall, the durability of a polarizing plate can be impaired. In addition, when the ultraviolet absorber is added to the polarizer protective film itself, processability may deteriorate, such as poor compatibility with other resins or poor optical properties in the process of manufacturing the polarizer protective film.
  • the separate ultraviolet blocking layer 200 between the polarizer 100 and the polarizer protective film 300, while maintaining the UV blocking and absorbing ability, it does not lower the performance of the polarizer protective film or functional layer You may not.
  • Figure 3 is a cross-sectional view of a polarizing plate according to another embodiment of the present invention.
  • the polarizer protective films 300 and 500 may be laminated on both surfaces of the polarizer 100 with the adhesive layers 10 and 20 interposed therebetween. That is, the polarizer protective film 300 is laminated on one surface of the polarizer 100 with the adhesive layer 10 interposed therebetween, and the UV blocking layer 200 may be interposed between the polarizer protective film 300 and the polarizer 100. Can be. Next, the polarizer protective film 500 may be laminated on the other surface of the polarizer 100 with the adhesive layer 20 interposed therebetween. On the other hand, the other components are the same as already described above, overlapping description will be omitted.
  • Figure 4 is a cross-sectional view of a polarizing plate according to another embodiment of the present invention.
  • the polarizing plate may include an adhesive layer 10, an ultraviolet blocking layer 200, and a polarizer protective film 300 only on one surface of the polarizer 100, and a primer layer 30 on the other surface of the polarizer 100.
  • the adhesive layer 700 may be disposed in the state interposed therebetween.
  • the adhesive layer 700 may be used to attach a polarizing plate onto a display panel, and the primer layer 30 may be used to protect the polarizer 100 and to improve adhesion between the polarizing plate and the display panel. Can be used.
  • the primer layer 30 may be formed by coating and drying a coating liquid containing a water-dispersible polymer resin, water-dispersible fine particles and water on the polarizer 100 using a bar coating method, a gravure coating method, or the like.
  • a coating liquid containing a water-dispersible polymer resin, water-dispersible fine particles and water on the polarizer 100 using a bar coating method, a gravure coating method, or the like.
  • the other components are the same as described above, overlapping description will be omitted.
  • the method of manufacturing a polarizing plate according to an embodiment of the present invention may include preparing a polarizer protective film, coating a UV blocking layer on one surface of the polarizer protective film, and applying an adhesive to one surface of the UV blocking layer. And laminating a polarizer on one surface of the UV blocking layer.
  • the polarizer protective film may include a resin composed of a polyester resin or an acrylic resin, and the preparing of the polarizer protective film may include a method of melting and extruding a non-stretched resin film and cooling and solidifying the film with a casting drum to form a film. Or the like.
  • the non-stretched resin film can be uniaxially or biaxially stretched.
  • the stretching method is not particularly limited, and the longitudinal uniaxial stretching method, the transverse uniaxial stretching method, the longitudinal and lateral difference biaxial stretching method, the longitudinal and horizontal simultaneous biaxial stretching method, and the like can be adopted. In an exemplary embodiment, it may be by the simultaneous biaxial stretching method, but is not limited thereto.
  • any suitable stretching machine such as a roll stretching machine, a tenter stretching machine, or a biaxial stretching machine of a pantograph type or a linear motor type can be used.
  • the UV blocking layer is benzophenone-based, benzotriazole-based, salicylate-based, cyanoacrylate-based, oxanilide (Oxanilide), and triazine (Triazine)
  • a coating composition comprising at least about 0.01% to about 1% by weight of the ultraviolet absorber.
  • the coating method may be performed by a coating method conventional in the art such as bar coating, and the method is not particularly limited.
  • the coating composition may further comprise a (meth) acrylate monomer, a UV initiator, a solvent and an additive, about 0.01% to about 1% by weight of a UV absorber, about 5% by weight of a (meth) acrylate monomer. % To about 10% by weight, UV initiator about 0.1% to about 0.5% by weight, solvent about 85% to about 90% by weight, and additives about 0.01% to about 0.3% by weight.
  • the solvent used in the composition is alcohol, ketone, and the like, one or more kinds of mixed solvents may be used, which is well known in the art and will not be described in detail.
  • the polarizer may include a dyeing step of dyeing a polyvinyl alcohol-based film with iodine or a dichroic dye, and a stretching step of stretching the polyvinyl alcohol-based film.
  • the dyeing step may be performed by impregnating a polyvinyl alcohol-based film in a solution of iodine or dichroic material.
  • a solution of iodine or dichroic material When the iodine solution is used as the iodine solution, an aqueous solution containing iodine (I 2 ) and iodine ions, for example, potassium iodide (KI) used as a dissolution aid, may be used.
  • the dyeing step may further comprise the step of swelling the polyvinyl alcohol-based film in the swelling bath.
  • the swelling step serves to soften the molecular chain of the polyvinyl alcohol-based film and to relax the molecular chain, thereby allowing the dichroic substance to be dyed into the polyvinyl alcohol-based film during the dyeing process, wherein polyvinyl
  • polyvinyl By increasing the swelling temperature near the glass transition temperature of the alcohol-based film, it is possible to reduce the crystal content in the polyvinyl alcohol-based film and to increase the swelling rate by making the molecules move actively.
  • the dyeability of the dichroic material is increased, and the dichroic material is homogeneously dyed to the polyvinyl alcohol-based film, and thus may have high optical properties and excellent orthogonal transmittance upon stretching.
  • the polyvinyl alcohol-based film can be stretched in the swelling process.
  • the swelling step can be performed by a dry method or a wet method. In an exemplary embodiment, it may be carried out by a wet method in a swelling bath containing swelling liquid.
  • a crosslinking process may further be included after the dyeing step.
  • the dichroic molecules are adsorbed onto the polymer matrix of the polyvinyl alcohol-based film using boric acid, borate, or the like.
  • the crosslinking method include a deposition method in which a polyvinyl alcohol-based film is deposited by dipping a boric acid solution or the like, but is not limited thereto, and may be performed by a coating method or a spraying method for applying or spraying a solution to a film. It may be.
  • the polyvinyl alcohol-based film may be stretched using a wet stretching method and / or a dry stretching method common in the art.
  • Non-limiting examples of the dry stretching method include an inter-roll stretching method, a heating roll stretching method, a compression stretching method, a tenter stretching method, and the like.
  • Non-limiting examples include a tenter stretching method, an inter-roll stretching method, and the like.
  • stretching may be performed in alcohols, water or boric acid aqueous solution, and for example, a solvent such as methyl alcohol or propyl alcohol may be used, but is not limited thereto.
  • Stretching temperature and time can be suitably selected and used according to the material of a film, desired elongation rate, a usage method, etc.
  • the stretching may be uniaxial stretching or biaxial stretching.
  • biaxial stretching may be performed to produce a polarization film adhered to a liquid crystal cell of a liquid crystal display, which will be described later.
  • the method may further include curing the UV blocking layer by irradiating ultraviolet rays after coating the UV blocking layer.
  • the method may include applying an adhesive on the UV blocking layer and laminating a polarizer on the UV blocking layer to which the adhesive is applied.
  • a polarizing plate having a structure in which an adhesive layer, an ultraviolet blocking layer, and a polarizer protective film are sequentially laminated on one surface of the polarizer may be manufactured.
  • the method may further include forming a functional layer on the other surface of the polarizer protective film.
  • the functional layer may include at least one of a hard-coating layer, an anti-reflection layer, an anti-glare layer, and a diffusion layer, as described above. Duplicate explanations will be omitted.
  • the method of manufacturing a polarizing plate of the present invention may further include a method of forming a primer layer on the other surface of the polarizer, forming an adhesive layer, applying an adhesive to the other surface of the polarizer, and laminating a polarizer protective film.
  • the present invention provides a display device including the polarizing plate, and the display device includes a display panel displaying an image according to an applied signal, and at least one polarizing plate disposed on at least one surface of the display panel.
  • At least one polarizer includes the polarizer of the present invention as described above.
  • the display device may be a liquid crystal display, and when the display device is a liquid crystal display, may include a backlight unit that provides light to the display panel in addition to the display panel and the polarizer.
  • the display panel 800 may be formed of a liquid crystal cell.
  • the liquid crystal cell 800 may typically include two substrates and a liquid crystal layer interposed between the substrates.
  • One of the substrates is usually colored
  • the filter, the counter electrode, and the alignment film may be formed, and the liquid crystal driving electrode, the wiring pattern, the thin film transistor element, and the alignment film may be formed on the other substrate.
  • the polarizer may include an upper polarizer disposed above the liquid crystal cell, and a lower polarizer disposed below the liquid crystal cell.
  • the liquid crystal display may include a liquid crystal cell, a backlight unit, an upper polarizer disposed on the viewing side of the liquid crystal cell, and a lower polarizer disposed between the liquid crystal cell and the backlight unit. Both polarizers may be attached to the display panel 800 by the adhesive layers 40 and 50.
  • Examples of the operation mode of the liquid crystal cell include a twisted nematic mode or an electrically controlled birefrigence mode.
  • Examples of the electrically controlled birefrigence mode include a vertical alignment method, an OCB (Optically Compensated) method, an IPS (In-Plane Switching) method, and the like.
  • the backlight unit may generally include a light source, a light guide plate, a reflective film, and the like. According to the configuration of the backlight can be arbitrarily divided into a direct method, a side light method, a planar light source method, and the like, more specifically known bar in the art will be omitted.
  • the lower polarizer may be interposed between the backlight unit and the liquid crystal cell.
  • the polarizer of the lower polarizer may transmit only light that vibrates in a specific direction among the light incident from the light source of the backlight unit.
  • the upper polarizer may be disposed opposite a backlight of the liquid crystal cell. In this case, it may be a form interposed between the other components of the liquid crystal display device, it may be located on the surface of the liquid crystal display device. In addition, when two polarizing plates are positioned with the liquid crystal cell interposed therebetween, the transmission axis of the polarizer of each polarizing plate may be orthogonal or parallel.
  • the upper polarizing plate may be the polarizing plate of the present invention, preferably the UV blocking layer 200 may be disposed on the viewing side of the upper polarizing plate.
  • the functional layer 400 described in the polarizing plate may be located on the outermost side of the upper polarizer viewing side.
  • FIG. 5 illustrates a structure in which polarizer protective films 300 and 500 are disposed on both surfaces of the polarizer 100
  • the present invention is not limited thereto, and the polarizer protective film may be disposed on one surface of the polarizer 100 as shown in FIG. 4.
  • the polarizing plate including only the primer layer 30 and the adhesive layer 700 may be attached to the display panel through the adhesive layer 700.
  • the display device may be an organic light emitting diode (OLED) including an organic light emitting diode
  • the display panel may be an organic light emitting display panel.
  • the organic light emitting display panel may include respective pixels, and each of the pixels may include an OLED composed of an organic light emitting layer between an anode and a cathode and a pixel circuit driving the OLED independently.
  • the pixel circuit may mainly include a switching thin film transistor (TFT), a capacitor, and a driving TFT.
  • the switching thin film transistor charges the data voltage to the capacitor in response to the scan pulse, and the driving TFT controls the amount of current supplied to the OLED according to the data voltage charged to the capacitor, thereby adjusting the amount of light emitted from the OLED and displaying an image. I can display it. Meanwhile, the organic light emitting display panel is well known in the art, and thus a detailed description thereof will be omitted.
  • the polarizing plate may be disposed on the viewing side of the organic light emitting display panel, and the UV blocking layer may be disposed on the viewing side of the polarizing plate. That is, the polarizer may be attached to the side at which the viewer observes the image displayed from the organic light emitting display panel. Therefore, while preventing contrast decrease due to the reflection of light incident from the outside, it is possible to implement excellent hardness, UV blocking and absorption ability.
  • a polarizing plate including a UV absorber or a light stabilizer was prepared as shown in Table 1 below.
  • UV barrier properties of Examples 1-12 and Comparative Examples 1-2 were tested. UV-blocking test was measured by Jasco's V-650 model UV-Vis spectroscope to the wavelength of 300nm-800nm in 2nm units to measure the transmittance for 380nm, 370nm, respectively, the results are shown in Table 1 below.
  • Example 1 5 One 0 9.8 1.9
  • Example 2 5 One One 2.1 0.5
  • Example 3 5 One 0.5 4.8 0.9
  • Example 4 5 One 0.1 8 1.7
  • Example 5 0.5 One 5.1 1.4
  • Example 6 5 0.5 0.5 6.3 1.5
  • Example 7 5 0.5 0.1 9.9 1.9
  • Example 8 5 0.3 0.5 9.9 2
  • Example 9 10 One 0 5.1 0.8
  • Example 10 5 5 0 0.5 0.1 Example 11 4 6 0 One 0.6
  • Example 12 5 3 0 3 1.1 Comparative Example 1 5 0.1 0.5 38.2 9.9 Comparative Example 2 5 0.1 0 42.8 11.2
  • Anti-glare layer on the outer surface of the polarizer protective film in the state of producing a UV blocking layer under the same conditions as the content of the UV absorbers of Examples 1, 3 and 6, respectively, and interposed between the polarizer and the polarizer protective film (Anti-Glare Layer) was formed to prepare the polarizing plates of Examples 13 to 15.
  • UV blocking layers were prepared under the same conditions as those of the UV absorbers of Examples 1, 3, and 6, respectively, and the polarizing plates were prepared by placing them between the polarizer protective film and the anti-glare layer. .
  • the pencil hardness of the polarizing plates of Examples 13 to 15 and Comparative Examples 3 to 5 was measured, and the results are shown in Table 2 below.
  • the pencil hardness was measured under the condition of 0.8mm / sec speed and 11mm length by 500g weight with Penhard Hardness Tester of KO-TECH CT-PC2 model.
  • the hardness at the surface of the polarizing plate can be prevented from being lowered while exhibiting excellent ultraviolet absorption and blocking ability.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Nonlinear Science (AREA)
  • Health & Medical Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polarising Elements (AREA)
  • Toxicology (AREA)

Abstract

La présente invention a trait à une plaque de polarisation, à un procédé de fabrication de la plaque de polarisation, et à un dispositif d'affichage incluant la plaque de polarisation. La plaque de polarisation selon la présente invention comprend : un polariseur ; un film protecteur de polariseur disposé sur au moins une surface du polariseur ; ainsi qu'une couche de blocage des ultraviolets placée entre ce polariseur et le film protecteur de polariseur.
PCT/KR2016/011622 2015-12-21 2016-10-17 Plaque de polarisation, procédé de fabrication de cette plaque, et dispositif d'affichage incluant cette plaque WO2017111276A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2015-0182697 2015-12-21
KR1020150182697A KR20170073918A (ko) 2015-12-21 2015-12-21 편광판 및 이의 제조방법 및 이를 포함하는 표시 장치

Publications (1)

Publication Number Publication Date
WO2017111276A1 true WO2017111276A1 (fr) 2017-06-29

Family

ID=59090667

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2016/011622 WO2017111276A1 (fr) 2015-12-21 2016-10-17 Plaque de polarisation, procédé de fabrication de cette plaque, et dispositif d'affichage incluant cette plaque

Country Status (2)

Country Link
KR (1) KR20170073918A (fr)
WO (1) WO2017111276A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107402452A (zh) * 2017-09-13 2017-11-28 深圳市思派德光学科技有限公司 一种3d太阳镜片及3d太阳镜

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102126057B1 (ko) 2017-12-28 2020-06-23 삼성에스디아이 주식회사 편광판 및 이를 포함하는 광학표시장치
KR102008432B1 (ko) * 2018-01-04 2019-10-21 주식회사 휴디스텍 편광판의 일부분이 제거된 lcd

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003207620A (ja) * 2002-01-10 2003-07-25 Fuji Photo Film Co Ltd 偏光板、製造方法及び液晶表示装置
KR20100007133A (ko) * 2008-07-11 2010-01-22 동우 화인켐 주식회사 액정표시장치
JP2011102821A (ja) * 2009-11-10 2011-05-26 Nitto Denko Corp 偏光板および画像表示装置
JP2011221424A (ja) * 2010-04-14 2011-11-04 Nitto Denko Corp 偏光板および画像表示装置
JP2015146002A (ja) * 2014-02-04 2015-08-13 住友化学株式会社 偏光板及び表示装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003207620A (ja) * 2002-01-10 2003-07-25 Fuji Photo Film Co Ltd 偏光板、製造方法及び液晶表示装置
KR20100007133A (ko) * 2008-07-11 2010-01-22 동우 화인켐 주식회사 액정표시장치
JP2011102821A (ja) * 2009-11-10 2011-05-26 Nitto Denko Corp 偏光板および画像表示装置
JP2011221424A (ja) * 2010-04-14 2011-11-04 Nitto Denko Corp 偏光板および画像表示装置
JP2015146002A (ja) * 2014-02-04 2015-08-13 住友化学株式会社 偏光板及び表示装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107402452A (zh) * 2017-09-13 2017-11-28 深圳市思派德光学科技有限公司 一种3d太阳镜片及3d太阳镜

Also Published As

Publication number Publication date
KR20170073918A (ko) 2017-06-29

Similar Documents

Publication Publication Date Title
US8411360B2 (en) Polarizing film for an organic electroluminescent (EL) display, a method of making the same and an organic EL display device having the polarizing film
TWI486639B (zh) 立體影像顯示裝置
WO2015030393A1 (fr) Lame polarisante, son procédé de fabrication et dispositif d'affichage à cristaux liquides la comprenant
WO2019124961A1 (fr) Film à perméabilité variable et son utilisation
CN111190308A (zh) 液晶显示装置
WO2011090355A2 (fr) Film adhesif collant destine a etre utilise dans le procede d'alignement de couches de photoalignement
WO2017188552A1 (fr) Film de protection de polariseur, plaque polarisante le comprenant, et dispositif d'affichage à cristaux liquides comprenant ladite plaque polarisante
WO2017126883A1 (fr) Plaque polarisante et dispositif d'affichage optique la comprenant
WO2017111276A1 (fr) Plaque de polarisation, procédé de fabrication de cette plaque, et dispositif d'affichage incluant cette plaque
WO2015186880A1 (fr) Film optique, dispositif d'affichage à cristaux liquides le comprenant et procédé de fabrication de film de protection utilisé à cet effet
WO2013012259A2 (fr) Film optique, son procédé de fabrication, verres stéréoscopiques et affichage stéréoscopique le comportant
WO2014030814A1 (fr) Plaque polarisante photochrome et dichroïque de diode électroluminescente organique et dispositif d'affichage à diodes électroluminescentes organiques
WO2018212528A1 (fr) Plaque polarisante et dispositif d'affichage optique la comprenant
KR101324403B1 (ko) 입체영상 표시장치 및 그 제조방법
JP7192797B2 (ja) 偏光板用積層体、偏光板、積層体フィルムロール、偏光板用積層体の製造方法及び偏光板の製造方法
CN103080789A (zh) 配向膜及其制造方法、延迟膜及其制造方法以及显示器
WO2019031713A1 (fr) Dispositif d'affichage à cristaux liquides
KR20090005770A (ko) 편광판 및 이를 포함하는 표시장치
WO2016052813A1 (fr) Film optique et son procédé de fabrication
WO2012036417A2 (fr) Affichage d'image stéréo
WO2016122282A1 (fr) Film antireflet, ainsi que plaque de polarisation et dispositif d'affichage le comprenant
WO2016052895A1 (fr) Procédé de fabrication d'un polariseur, et polariseur et plaque de polarisation fabriqués à l'aide de celui-ci
WO2016085072A1 (fr) Composition de couche de protection de polariseur, couche de protection de polariseur fabriquée à partir de celle-ci, plaque polarisante comprenant ladite couche et dispositif d'affichage optique comprenant celle-ci
WO2019117422A1 (fr) Composition adhésive
WO2016175601A1 (fr) Film de protection polarisant, plaque de polarisation le comprenant, et procédé de fabrication d'une plaque de polarisation

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: 16879143

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16879143

Country of ref document: EP

Kind code of ref document: A1