WO2014175485A1 - 광학 적층체 - Google Patents
광학 적층체 Download PDFInfo
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- WO2014175485A1 WO2014175485A1 PCT/KR2013/003592 KR2013003592W WO2014175485A1 WO 2014175485 A1 WO2014175485 A1 WO 2014175485A1 KR 2013003592 W KR2013003592 W KR 2013003592W WO 2014175485 A1 WO2014175485 A1 WO 2014175485A1
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- WIPO (PCT)
- Prior art keywords
- layer
- optical
- quantum dot
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
-
- 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
Definitions
- the present invention relates to an optical laminate comprising an optical luminescence layer.
- LCDs liquid crystal displays
- PDPs plasma displays
- An object of this invention is to provide the optical laminated body which can improve the visibility of a laser pointer.
- Optical luminescence optical laminated body provided with the optical luminescence layer containing quantum dot particle
- optical luminescence quantum dot particles are quantum dot particles, quantum dot-containing particles or mixtures thereof.
- the quantum dot particles are II-VI semiconductor compound; Group III-V semiconductor compounds; Group IV-VI semiconductor compounds; A Group IV element or a compound containing the same; And a semiconductor material selected from the group consisting of a combination thereof.
- quantum dot-containing particles include at least one quantum dot particle bonded to the surface of the inorganic core particle or the polymer core particle.
- optical laminate according to the above 1, wherein the absorption wavelength of the optical luminescence quantum dot particles is 350 to 450 nm or 600 to 650 nm.
- optical luminescence layer is formed by applying a composition for forming an optical luminescence layer comprising an optical luminescence quantum dot particle, a translucent resin, an initiator and a solvent.
- the optical luminescence layer is a hard coating layer, a polarizer, a polarizer protective layer, a retardation layer, an antireflection layer, an antistatic layer, a high refractive index layer, a low refractive layer, an antifouling layer, an adhesive layer, an adhesive layer or a substrate thereof
- Optical laminated body which is film
- the optical laminate is a polarizing plate optical laminate.
- Image display device comprising the optical laminate of any one of the above 1 to 8.
- the image display apparatus according to 9 above which is a liquid crystal display apparatus.
- the optical laminate of the present invention includes photoluminescent quantum dot particles and emits light by stimulation by light, the visibility of the laser pointer can be significantly improved when the laser pointer is directly displayed on the display.
- the present invention includes an optical luminescence layer comprising optical luminescence quantum dot particles, and is attached to any one surface of a display panel to emit light with a stimulus caused by light, so that the laser pointer is directly displayed on a display.
- the optical laminated body which can remarkably improve the visibility of this is related.
- the optical laminated body of this invention is equipped with the optical luminescence layer containing optical luminescence quantum dot particle, and is attached to either surface of a display panel.
- the light luminescence layer refers to a layer that is stimulated by light to emit light by itself. Since the optical laminated body of this invention is equipped with such an optical luminescence layer, and is attached to either surface of a display panel, the said site
- the optical laminated body of this invention is attached to either side of a display panel. Although it is located under a some optical functional film or other structure, or it is located in the back of the viewer side with respect to a display panel, it will not specifically limit, if it is a position which can generate an optical luminescence phenomenon by the light of a laser pointer.
- the photoluminescent quantum dot particles according to the present invention may be quantum dot particles, quantum dot containing particles or mixtures thereof.
- Quantum dots are nanoscale semiconductor materials. Atoms form molecules, and molecules form clusters of small molecules called clusters to form nanoparticles, which are called quantum dots, especially when they are semiconducting.
- the quantum dot When a quantum dot reaches an excited state from the outside, the quantum dot emits energy according to a corresponding energy band gap.
- Quantum dot particles can be synthesized by a wet chemical process, an organometallic chemical vapor deposition process, or a molecular beam epitaxy process.
- a wet chemical process is a method of growing particles by adding a precursor material to an organic solvent. As the crystal grows, the organic solvent naturally coordinates the surface of the quantum dot crystal and acts as a dispersant to control the growth of the crystal. Therefore, metal organic chemical vapor deposition (MOCVD) or molecular beam epitaxy (MBE) It is easier and cheaper to control nanoparticle growth than vapor deposition such as epitaxy.
- MOCVD metal organic chemical vapor deposition
- MBE molecular beam epitaxy
- the quantum dot particle according to the present invention is not particularly limited as long as it is a quantum dot particle capable of emitting light by stimulation by light, for example, a group II-VI semiconductor compound; Group III-V semiconductor compounds; Group IV-VI semiconductor compounds; A Group IV element or a compound containing the same; And a semiconductor material selected from the group consisting of a combination thereof.
- the II-VI semiconductor compound may be selected from the group consisting of CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, and mixtures thereof; CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe And CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe, and mixture
- the group IV-VI semiconductor compound is a binary element selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe, and mixtures thereof; A three-element compound selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, and mixtures thereof; And SnPbSSe, SnPbSeTe, SnPbSTe, and an elemental compound selected from the group consisting of a mixture thereof, and the group IV element or the compound comprising the same is Si, Ge, and a mixture thereof. An element compound selected from; And a binary element compound selected from the group consisting of SiC, SiGe, and mixtures thereof.
- the quantum dots may have a homogeneous single structure or a dual structure of a core-shell.
- the materials forming each core and shell may be different from each other mentioned above. It may be made of another semiconductor compound.
- the energy band gap of the shell material may be larger than the energy band gap of the core material.
- a quantum dot having a core-shell structure of CdSe / ZnS (CH 3 ) 2 Cd (dimethyl cadmium) and TOPSe (trioctylphosphine selenide) in an organic solvent using TOPO (trioctylphosphine oxide) as a surfactant
- TOPO trioctylphosphine oxide
- the CdSe / ZnS quantum dots capped with TOPO can be obtained.
- the quantum dot-containing particles according to the present invention include at least one quantum dot particle bonded to the surface of the inorganic core particle or the polymer core particle.
- the number of quantum dot particles introduced to the surface of the core particles of the quantum dot-containing particles according to the present invention is not particularly limited, and may be, for example, 1 to 8,200,000, preferably 10 to 640,000.
- the inorganic core particles may be silica, alumina (Al 2 O 3 , AlO 2 ), titanium dioxide or zinc dioxide.
- the polymeric core particles may be polystyrene or polymethylmethacrylate.
- the diameter of the core particles is not particularly limited, and may be, for example, 2 to 1,000 ⁇ m.
- the core particles and the quantum dot particles may be bonded by covalent bonds, ionic bonds or physical adsorption.
- the covalent bond may be formed by a functional group including any one of sulfur, nitrogen or phosphorus bonded to the quantum dot particles on one side and bonded to the core particles on the other side.
- the functional group may be a silane group, an amino group, a sulfone group, a carboxy group or a hydroxyl group.
- the absorption wavelength of the photoluminescent quantum dot particles according to the present invention is preferably not a wavelength in the visible light region in order to suppress the photoluminescence layer from emitting by the light source of the display, for example, may be 350 to 450nm. have.
- the absorption wavelength of the photoluminescence quantum dot particles is a wavelength in the visible light region
- the light emission by the light source of the display does not impair the visibility of the laser pointer, and is acceptable. To 650 nm.
- the optical luminescence layer according to the present invention may be formed as a separate single layer which performs only the optical luminescence role.
- the optical luminescence layer may be formed by applying a composition for forming an optical luminescence layer including the photo luminescence quantum dot particles to a substrate.
- composition for forming an optical luminescence layer according to the present invention comprises an optical luminescence quantum dot particle, a light transmitting resin, an initiator, and a solvent.
- the photoluminescent quantum dot particles according to the present invention can be used in the form of a composition dissolved or dispersed in a solvent.
- the said solvent is not specifically limited, For example, Alcohol solvents, such as methanol, ethanol, isopropanol, butanol, a methylcellulose solution, an ethyl solvent solution; Ethyl acetate, propyl acetate, normal butyl acetate, tertiary butyl acetate, methyl cellosolve acetate, ethyl cellosolve acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, methoxy Acetate solvents such as butyl acetate and methoxypentyl acetate; Ether solvents such as diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, diethylene glycol dibutyl ether and propylene glycol monomethyl ether; Ketone solvents such as methyl ethyl ket
- the content of optical luminescence quantum dot particles included in the composition for forming an optical luminescence layer according to the present invention is not particularly limited, and may be, for example, 0.05 to 5% by weight of the total weight of the composition for forming an optical luminescence layer. And preferably 0.1 to 3% by weight.
- the content of the quantum dot particles and the quantum dot-containing particles included in the composition is 0.05 to 5% by weight, it is possible to maximize the effect of improving the visibility of the laser point without compromising the visibility of the display.
- the translucent resin according to the present invention may be a photocurable resin.
- the photocurable resin may include a photocurable (meth) acrylate oligomer and a monomer.
- photocurable (meth) acrylate oligomer examples include epoxy (meth) acrylate, urethane (meth) acrylate, and the like, and urethane (meth) acrylate is more preferable.
- the urethane (meth) acrylate can be prepared by reacting a polyfunctional (meth) acrylate containing a hydroxyl group with a compound having an isocyanate group in the presence of a catalyst.
- (Meth) acrylate containing the said hydroxy group is not specifically limited, For example, 2-hydroxyethyl (meth) acrylate, 2-hydroxyisopropyl (meth) acrylate, 4-hydroxybutyl (meth) Acrylate, caprolactone ring-opening hydroxyacrylate, pentaerythritol tri / tetra (meth) acrylate mixture, dipentaerythritol penta / hexa (meth) acrylate mixture, and the like. These can be used individually or in mixture of 2 or more types.
- the compound having the isocyanate group is not particularly limited, and for example, 1,4-diisocyanatobutane, 1,6-diisocyanatohexane, 1,8-diisocyanatooctane, 1,12-diisocyanatododecane , 1,5-diisocyanato-2-methylpentane, trimethyl-1,6-diisocyanatohexane, 1,3-bis (isocyanatomethyl) cyclohexane, trans-1,4-cyclohexene diisocyanate, 4,4'-methylenebis (cyclohexyl isocyanate), isophorone diisocyanate, toluene-2,4-diisocyanate, toluene-2,6-diisocyanate, xylene-1,4-diisocyanate, tetramethylxylene -1,3-diisocyanate, 1-chloromethyl-2
- the said monomer is not specifically limited,
- the monomer which contains unsaturated groups such as a (meth) acryloyl group, a vinyl group, a styryl group, an allyl group, as a photocurable functional group, has a (meth) acryloyl group More preferred are monomers.
- the monomer which has the said (meth) acryloyl group is not specifically limited, For example, neopentyl glycol acrylate, 1, 6- hexanediol (meth) acrylate, a propylene glycol di (meth) acrylate, triethylene glycol di (Meth) acrylate, dipropylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, polypropylene glycol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, trimethylol ethane tree ( Meta) acrylate, 1,2,4-cyclohexanetetra (meth) acrylate, pentaglycerol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol Tri (meth) acrylate, dipent
- the above-mentioned photocurable (meth) acrylate oligomer and monomer can be used individually or in mixture of 2 or more types.
- the content of the light-transmissive resin according to the present invention is not particularly limited, and may be included, for example, in an amount of 5 to 80% by weight of the total weight of the composition for forming an optical luminescence layer, and preferably 30 to 50% by weight. If the content of the light-transmitting resin is less than 5% by weight, it may be difficult to supply a sufficient coating liquid and to secure an appropriate thickness of the light luminescence layer. If the content of the light-transmitting resin is greater than 80% by weight, the coating liquid may have a high viscosity, thereby decreasing processability due to poor coating.
- the photoinitiator according to the present invention is not particularly limited and may be a photoinitiator commonly used in the art, for example, 2-methyl-1- [4- (methylthio) phenyl] 2-morpholinepropanone-1, di Phenyl ketone benzyl dimethyl ketal, 2-hydroxy-2-methyl-1-phenyl-1-one, 4-hydroxycyclophenyl ketone, dimethoxy-2-phenylatetophenone, anthraquinone, fluorene, triphenylamine , Carbazole, 3-methylacetophenone, 4-knoloacetophenone, 4,4-dimethoxyacetophenone, 4,4-diaminobenzophenone, 1-hydroxycyclohexylphenyl ketone, benzophenone, and the like. have. These can be used individually or in mixture of 2 or more types.
- the content of the photoinitiator according to the present invention is not particularly limited, and for example, may be included in 0.1 to 10% by weight of the total weight of the composition for forming the photo luminescence layer, preferably 1 to 5% by weight. If the content of the photoinitiator is less than 0.1% by weight, the curing speed may be lowered, and process efficiency may be lowered. If the content of the photoinitiator is greater than 10% by weight, cracks may occur due to overcuring.
- the solvent according to the present invention is not particularly limited and may be a solvent commonly used in the art, and examples thereof include alcohol solvents such as methanol, ethanol, isopropanol, butanol, methyl cellulsolve, and ethyl solution; Diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, diethylene glycol dibutyl ether, propylene glycol monomethyl ether, methyl cellosolve acetate, ethyl cellosolve acetate, propylene glycol monomethyl ether Ether solvents such as acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, methoxybutyl acetate and methoxypentyl acetate; Ketone solvents such as methyl ethyl ketone, methyl butyl ketone, methyl isobutyl ketone, diethyl
- the content of the solvent according to the present invention is not particularly limited, and for example, may be included in 10 to 95% by weight of the total weight of the composition for forming an optical luminescence layer, preferably 50 to 80% by weight. If the content of the solvent is less than 10% by weight, the viscosity of the composition may be high, the workability may be lowered. When the content of the solvent is more than 95% by weight, the drying process may take a long time and may be economical.
- the composition for forming an optical luminescence layer according to the present invention includes additives such as a curing agent, a leveling agent, an adhesion promoter, an antioxidant, and the like commonly used in the art, in addition to the above components; Strength reinforcing nano silicas, inorganic nanoparticles and phos (polyhedral oligomeric silsesquioxanes); Antistatic conductive polymers, nanoparticles and ionic liquids; And anti-glare organic particles, inorganic particles, and the like.
- additives such as a curing agent, a leveling agent, an adhesion promoter, an antioxidant, and the like commonly used in the art, in addition to the above components; Strength reinforcing nano silicas, inorganic nanoparticles and phos (polyhedral oligomeric silsesquioxanes); Antistatic conductive polymers, nanoparticles and ionic liquids; And anti-glare organic particles, inorganic particles, and the like.
- the substrate is not particularly limited as long as the substrate is durable and allows a user to see the display well, and a material used in the art may be used without particular limitation.
- a material used in the art may be used without particular limitation.
- PET polyethylene terephthalate
- PC polycarbonate
- PMMA polymethyl methacrylate
- PES polyethersulfone
- PAR polyacrylate
- PEI polyetherimide
- PEN polyethylene naphthalate
- PES polyethyelenen napthalate
- PPS polyphenylene sulfide
- polyallylate polyimide
- CAP Cellulose acetate propionate
- the method of applying the composition for forming an optical luminescence layer on a substrate is not particularly limited and may be based on a method commonly used in the art, for example, a fountain coating method, a die coating method, a spin coating method, a spray method. Coating method, gravure coating method, roll coating method, bar coating method, etc. are mentioned.
- the photoluminescence layer may be formed by applying and curing the composition for forming an optical luminescence layer, and may be subjected to a drying step as necessary prior to curing.
- a drying method is not specifically limited, For example, it can be based on methods, such as natural drying, hot air drying, heat drying, and the like.
- the hardening method is not specifically limited, For example, it can be based on methods, such as ultraviolet curing and ionizing radiation hardening. Although various active energy can be used for the means, it is more preferable to use ultraviolet rays.
- an energy source source sources, such as a high pressure mercury lamp, a halogen lamp, a xenon lamp, a metal halide lamp, a nitrogen laser, an electron beam accelerator, a radioactive element, are preferable, for example.
- the irradiation amount of an energy source 50-5000mJ / cm ⁇ 2> is preferable as integrated exposure amount in an ultraviolet-ray wavelength 365nm.
- Hardening becomes more enough that the irradiation amount is 50 mJ / cm ⁇ 2> or more, and the hardness of the photoluminescent layer formed becomes more sufficient. Moreover, if it is 5000 mJ / cm ⁇ 2> or less, coloring of the photoluminescent layer formed can be prevented, and transparency can be improved.
- the optical laminate including the optical luminescence layer according to the present invention may further include at least one optical functional layer.
- an optical functional layer may be, for example, a polarizer, a polarizer protective layer, a hard coating layer, an anti-fingerprint layer, a retardation layer, an antireflection layer, an antistatic layer, or the like.
- the lamination order thereof is not particularly limited and may be appropriately selected, for example, may be formed on the light luminescence layer, may be formed under the light luminescence layer, or may be formed on the opposite side of the substrate. .
- the optical luminescence layer according to the present invention may be an optical functional layer commonly used in the art, for example, a hard coating layer, a polarizer, a polarizer protective layer, a retardation layer, an antireflection layer , Antistatic layer, high refractive layer, low refractive layer, antifouling layer and the like.
- the composition for photoluminescence layer formation can be used in mixture with the composition for optical function layer formation.
- the light luminescence layer may be at least one of a polarizer and a polarizer protective layer.
- the composition for photoluminescence layer formation can be used in mixture with the composition for polarizer formation or the composition for polarizer protective layer formation.
- the light luminescence layer may be formed as a separate layer on one surface of the polarizer or the polarizer protective layer.
- the optical luminescence layer according to the present invention may be an adhesive layer or an adhesive layer included in the display panel.
- the composition for forming an optical luminescence layer can be used in admixture with an adhesive or an adhesive composition.
- the optical luminescence layer according to the present invention may be a base film on which the optical function layer, adhesive layer, adhesive layer, and the like are formed.
- the composition for photoluminescence layer formation can be used in mixture with the composition for base film formation.
- the base film is not particularly limited, and for example, polyether sulfone (PES), polyacrylate (PAR, polyacrylate), polyether imide (PEI, polyetherimide), polyethylene naphthalate (PEN, polyethyelenen napthalate), polyethylene Terephthalate (PET, polyethyelene terepthalate), polyphenylene sulfide (PPS), polyallylate, polyimide, polycarbonate (PC, polycarbonate), cellulose triacetate (TAC), cellulose acetate Propionate (cellulose acetate propionate, CAP) etc. are mentioned.
- PES polyether sulfone
- PAR polyacrylate
- PEI polyether imide
- PEN polyethylene naphthalate
- PET polyethyelene terepthalate
- PPS polyphenylene sulfide
- polyallylate polyimide
- PC polycarbonate
- TAC cellulose triacetate
- CAP cellulose acetate Propionate
- the present invention also provides an image display device including the optical laminate.
- the image display apparatus of the present invention includes the optical laminated body attached to either side of the display panel.
- the kind of the image display device is not particularly limited, and for example, the image display device may be a liquid crystal display device, a plasma display device, an electroluminescent display device, a cathode ray tube display device, or the like.
- the display panel is not particularly limited, and may be a configuration commonly used in the art, and may further include a configuration commonly used in the art.
- urethane acrylate SC2153
- pentaerythritol triacrylate M340
- 20 parts by weight of quantum dot solution (0.5% by weight of quantum dot particles (CdS), 99.5% by weight of toluene)
- 17 parts by weight of methyl ethyl ketone 10 parts by weight of propylene glycol monomethyl ether, 2.5 parts by weight of photoinitiator (I-184) and 0.5 parts by weight of leveling agent (BYK3550) were stirred and filtered through a filter made of PP material to prepare a composition for forming an optical luminescence layer.
- urethane acrylate SC2153
- pentaerythritol triacrylate M340
- quantum dot solution (0.5% by weight of quantum dot particles (CdSe640), 99.5% by weight of toluene)
- 17 parts by weight of methyl ethyl ketone 10 parts by weight of propylene glycol monomethyl ether, 2.5 parts by weight of photoinitiator (I-184) and 0.5 parts by weight of leveling agent (BYK3550) were stirred and filtered through a filter made of PP material to prepare a composition for forming an optical luminescence layer.
- urethane acrylate SC2153
- pentaerythritol triacrylate M340
- organic particles XX-19HW, particle refractive index 1.495
- 17 parts by weight of methyl ethyl ketone propylene glycol monomethyl ether 10
- photoinitiator I-184
- leveling agent BYK3550
- a high refractive coating solution (TYZ58-01E, a refractive index of 1.58) was diluted with propylene glycol monomethyl ether so that the total solid content was 5%, and then filtered through a PP filter to prepare a composition for forming a high refractive hard coating layer.
- composition for photoluminescence layer (hard coating layer) formation of manufacture example (1) was apply
- composition for photoluminescence layer (anti-glare hard-coating layer) formation of manufacture example (2) was apply
- the composition for forming the photoluminescence layer (hard coating layer) of Preparation Example (1) After curing the composition for forming the photoluminescence layer (hard coating layer) of Preparation Example (1) to a thickness of 5 ⁇ m on one surface of a triacetyl cellulose film having a thickness of 40 ⁇ m, and drying at 70 ° C. for 2 minutes, integration was performed. UV was irradiated with a light amount of 400 mJ / cm 2 to form an optical luminescence layer (hard coating layer). Thereafter, the composition for forming the high refractive index hard coating layer of Preparation Example 8 was applied on the optical luminescence layer (hard coating layer) so as to have a thickness of 130 nm after curing to form a high refractive index hard coating layer. And the composition for low-refractive-hard-coat layer formation of manufacture example (5) was apply
- the hard coating layer-forming composition of Preparation Example 6 was applied to one surface of a triacetyl cellulose film having a thickness of 40 ⁇ m so as to have a thickness of 5 ⁇ m after curing and dried at 70 ° C. for 2 minutes, and then UV light was accumulated at 400 mJ / cm 2 . Irradiated to form a hard coat layer. Thereafter, the composition for forming an optical luminescence layer (high refractive index hard coating layer) of Preparation Example 3 was applied on the hard coating layer so as to have a thickness of 130 nm after curing to form an optical luminescence layer (high refractive index hard coating layer).
- composition for low refractive index hard-coat layer formation of manufacture example (5) was apply
- composition for photoluminescence layer (hard coating layer) formation of manufacture example (4) was apply
- the hard coating layer-forming composition of Preparation Example 6 was applied to one surface of a triacetyl cellulose film having a thickness of 40 ⁇ m so as to have a thickness of 5 ⁇ m after curing and dried at 70 ° C. for 2 minutes, and then UV light was accumulated at 400 mJ / cm 2 . Irradiated to form a hard coat layer. Thereafter, the composition for forming an optical luminescence layer (high refractive index hard coating layer) of Preparation Example 3 was applied on the hard coating layer so as to have a thickness of 130 nm after curing to form an optical luminescence layer (high refractive hard coating layer).
- composition for low refractive index hard-coat layer formation of manufacture example (5) was apply
- composition for hard-coat layer formation of manufacture example (6) was apply
- composition for anti-glare hard-coating layer formation of manufacture example (7) was apply
- the hard coating layer-forming composition of Preparation Example 6 was applied to one surface of a triacetyl cellulose film having a thickness of 40 ⁇ m so as to have a thickness of 5 ⁇ m after curing and dried at 70 ° C. for 2 minutes, and then UV light was accumulated at 400 mJ / cm 2 . Irradiated to form a hard coat layer. Thereafter, the composition for forming the high refractive index hard coating layer of Preparation Example 8 was applied on the hard coating layer to have a thickness of 130 nm after curing to form a high refractive index hard coating layer. And on the said high refractive index hard-coat layer, the composition for hard-coat layer formation of manufacture example (5) was apply
- optical laminates prepared in Examples and Comparative Examples were bonded to the polarizing plates and then bonded to the display panels.
- the reflectance in the visible light region of 380-780 nm of the optical laminates prepared in Examples 3, 4, 6 and Comparative Example 3 was measured with a UV spectrometer (UV-Spectrophotometer, SHIMADZU) to show the lowest reflectance.
- UV-Spectrophotometer SHIMADZU
- the optical laminate of Examples 1 to 6 can be confirmed that the laser point is very well visible and excellent visibility.
- the transmittance, haze and reflectance were excellent similarly to the optical laminate of the comparative example.
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Abstract
Description
구분 | 실시예 1 | 실시예 2 | 실시예 3 | 실시예 4 | 실시예 5 | 실시예 6 | 비교예 1 | 비교예 2 | 비교예 3 |
포인트 시인성 | ○ | ○ | ○ | ○ | ○ | ○ | x | △ | x |
투과율(%) | 92.5 | 92.1 | 94.2 | 94.1 | 92.3 | 94.1 | 92.4 | 92.2 | 94.1 |
헤이즈(%) | 0.3 | 1.0 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 1.0 | 0.3 |
반사율(%) | - | - | 0.51 | 0.49 | - | 0.51 | - | - | 0.50 |
Claims (10)
- 광 루미네선스 양자점(quantum dot) 입자를 포함하는 광 루미네선스층을 구비하고, 디스플레이 패널의 어느 일면에 부착되는 광학 적층체.
- 청구항 1에 있어서, 상기 광 루미네선스 양자점 입자는 양자점 입자, 양자점 함유 입자 또는 이들의 혼합물인 광학 적층체.
- 청구항 2에 있어서, 상기 양자점 입자는 II-VI족 반도체 화합물; III-V족 반도체 화합물; IV-VI족 반도체 화합물; IV족 원소 또는 이를 포함하는 화합물; 및 이들의 조합으로 이루어진 군에서 선택되는 반도체 물질을 포함하는 광학 적층체.
- 청구항 2에 있어서, 상기 양자점 함유 입자는 무기물 코어 입자 또는 고분자 코어 입자의 표면에 결합된 적어도 하나의 양자점 입자를 포함하는 광학 적층체.
- 청구항 1에 있어서, 상기 광 루미네선스 양자점 입자의 흡수 파장은 350 내지 450nm 또는 600 내지 650nm인 광학 적층체.
- 청구항 1에 있어서, 상기 광 루미네선스층은 광 루미네선스 양자점 입자, 투광성 수지, 개시제 및 용제를 포함하는 광 루미네선스층 형성용 조성물을 도포하여 형성된 것인 광학 적층체.
- 청구항 1에 있어서, 상기 광 루미네선스층은 하드코팅층, 편광자, 편광자 보호층, 위상차층, 반사방지층, 대전방지층, 고굴절층, 저굴절층, 방오층, 점착층, 접착층 또는 이들의 기재 필름인 광학 적층체
- 청구항 1에 있어서, 광학 적층체는 편광판인 광학 적층체.
- 청구항 1 내지 8 중 어느 한 항의 광학 적층체를 포함하는 화상표시장치.
- 청구항 9에 있어서, 액정표시장치인 화상표시장치.
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