KR102121387B1 - Sensitive luminescence composition - Google Patents

Abstract

The present invention relates to a sensitive light-emitting composition capable of improving the visibility of a laser pointer by including a sensitive light-emitting material having a maximum absorption wavelength of 600 to 700 nm.

Description

Sensitive Luminescent Composition{SENSITIVE LUMINESCENCE COMPOSITION}

The present invention relates to a sensitive luminescent composition.

For the purpose of enhancing the understanding of listeners at conferences and presentations, methods such as displaying presentation materials on an image display device are mainly used. In addition, as a way to further enhance the understanding of listeners, a method of using a laser pointer to point out a portion to be emphasized by a presenter among information displayed on the image display device is commonly used.

However, when the presentation data or the like is directly displayed on the image display device, since the image display device is self-luminous, there is a problem that visibility of the laser light by the laser pointer is poor. In addition, in order to improve the display quality of the image display device itself, anti-reflection technology has been developed to suppress reflection of the surface of the image display device. In this case, since the reflection of the projection light of the laser pointer is also suppressed, the visibility of the laser pointer is lowered It is becoming. Recently, a technique of using a laser pointer as a pointing device for performing a screen instruction operation on an image display apparatus has been developed, and it is necessary to develop a technique for improving the visibility of the laser pointer on the image display apparatus.

In this regard, Korean Patent Application Publication No. 2014-0026287 discloses a pointing display device comprising an ultraviolet reactant including an ultraviolet reactant layer containing an ultraviolet reactant and a base material comprising a coating layer and an ultraviolet light source capable of emitting an ultraviolet laser. Although described with respect to this, there is a problem of poor practicality because an image display device including a layer of an ultraviolet reactant and a pointing display device including an ultraviolet light source capable of emitting an ultraviolet laser are needed together.

In addition, Korean Patent Registration No. 1107532 includes a visibility resin layer having a specific haze value and an arithmetic average surface roughness, thereby increasing the surface scattering of the laser pointer by using the relationship between the haze value and the unevenness of the viewer-side surface of the film. Although a method for improving the visibility of the laser pointer has been described, there is a problem in that the production of a clear type film is difficult in the case of a method using scattering according to surface irregularities.

Republic of Korea Patent Publication No. 2014-0026287 (2014.03.05) Republic of Korea Registered Patent No. 1107532 (2012.01.12)

The present invention has been made to solve the above problems, and an object thereof is to provide a sensitizing light-emitting composition capable of manufacturing an image display device with improved visibility of a laser pointer.

The sensitive light-emitting composition of the present invention for achieving the above object is characterized in that it comprises a sensitive light-emitting material having a maximum absorption wavelength of 600 to 700nm.

In addition, the hard coating layer according to the present invention is characterized in that it comprises a cured product of the above-described sensitive light-emitting composition.

In addition, the photocurable adhesive layer according to the present invention is characterized in that it comprises a cured product of the above-described sensitizing light-emitting composition.

In addition, the thermosetting adhesive layer according to the present invention is characterized in that it comprises a cured product of the above-described sensitive light-emitting composition.

In addition, the pressure-sensitive adhesive layer according to the present invention is characterized in that it comprises a cured product of the above-described sensitive light-emitting composition.

In addition, the base layer of the optical film according to the present invention is characterized in that it comprises the above-described sensitive light-emitting composition.

In addition, the image display device according to the present invention is characterized in that it comprises at least one selected from the group consisting of the above-described hard coating layer, photo-curable adhesive layer, thermosetting adhesive layer, adhesive layer and base layer.

The sensitive light-emitting composition according to the present invention has the advantage of improving the visibility of the laser pointer by including the above-described sensitive light-emitting material.

In addition, the hard coating layer according to the present invention, the photo-curable adhesive layer, the thermosetting adhesive layer to the pressure-sensitive adhesive layer contains the cured product of the above-described sensitive light-emitting composition, the base layer according to the present invention is a laser pointer by including the above-described sensitive light-emitting composition It has the advantage of improving visibility.

In addition, the image display device according to the present invention has the advantage of improving the visibility of the laser pointer by including at least one selected from the group consisting of the aforementioned hard coating layer, photo-curable adhesive layer, thermosetting adhesive layer, adhesive layer and base layer. .

In the present invention, when it is said that a member is positioned "on" another member, this includes not only the case where one member is in contact with the other member but also another member between the two members.

In the present invention, when a part “includes” a certain component, it means that the component may further include other components, not to exclude other components, unless otherwise stated.

Hereinafter, the present invention will be described in more detail.

< Responsiveness Luminescent composition>

Responsiveness Emitting material

The sensitive light-emitting composition according to an aspect of the present invention may include a sensitive light-emitting material having a maximum absorption wavelength of 600 to 700 nm, thereby improving visibility of a laser pointer emitting light having a wavelength included in the range of 600 to 700 nm. There is an advantage.

Specifically, the sensitizing luminescent material means a material that absorbs a specific wavelength and emits light. The sensitizing luminescent composition according to an aspect of the present invention includes a responsive luminescent material having a maximum absorption wavelength of 600 to 700 nm, 600 Since the wavelength of the laser pointer (e.g., the red laser pointer uses light of 635 nm wavelength) that emits light of a wavelength included in the range of 700 nm is absorbed and re-emitted, the visibility of the laser pointer is further improved. have.

The sensitive light-emitting material may be used without limitation as long as the maximum absorption wavelength is included in the range of 600 to 700 nm. For example, Alexa Fluor 594, Alexa Fluor 610, Alexa Fluor 633, Alexa Fluor 635, Alexa Fluor 647, Alexa Fluor 660, Alexa Fluor 680, Surelite APC, Delight 633, Allophicosy No, Chromeo 642, Surelite P3, Cy 5, Delight 649, Highlight Fluor 647, IR Dye 700DX, APC-Cy5.5, Highlight Fluor 680, Delight 680, APC-Cy7, etc. It is not limited to this.

Considering that the wavelength of the commonly used red laser pointer is 635 nm, it is preferable that the maximum absorption wavelength of the sensitive light emitting material is 600 to 650 nm.

< Hard coating layer >

The hard coating layer according to an aspect of the present invention has an advantage of improving visibility of a laser pointer emitting light having a wavelength included within a range of 600 to 700 nm by including a cured product of the sensitive light-emitting composition of the present invention.

The coating method of the responsive reaction composition may be used without particular limitations as long as it is a method used in the art, for example, a method such as a die coater, air knife, reverse roll, spray, blade, casting, gravure, micro gravure, or spin coating. Can be used.

According to one embodiment of the present invention, the above-described sensitizing light-emitting composition may be used for forming a hard coating layer by further comprising at least one selected from the group consisting of photopolymerizable compounds, photopolymerization initiators, solvents, and additives.

According to one embodiment of the present invention, when the sensitizing luminescent composition is used for forming a hard coating layer, the sensitizing luminescent material is 0.1 to 15% by weight, preferably 100 to 100% by weight of the entire sensitizing luminescent composition for forming a hard coating layer comprising the same May be included in 1 to 10% by weight, more preferably 2 to 8% by weight. When the content of the sensitizing luminescent material is included below the above range, the luminescence is weak, which may cause a problem of poor visibility of the laser, and when it exceeds the above range, the compatibility decreases and precipitation occurs or high concentration? A problem that the luminescence property decreases may occur.

According to an embodiment of the present invention, when the sensitive light-emitting composition of the present invention is used for forming a hard coating layer, the sensitive light-emitting composition may further include scattering particles.

Scattering particles

The sensitive light-emitting composition according to an embodiment of the present invention may further include scattering particles.

When the scattering particles meet the emitted light emitted by the sensitive light-emitting material, the optical path increases and the intensity of emission increases, thereby increasing the light efficiency.

The scattering particles may be used without particular limitations as long as they are commonly used in the art, for example, silicone-based fine particles, melamine-based resin fine particles, acrylic-based resin fine particles (for example, polymethyl methacrylate-based fine particles, etc.), acrylic -Organic fine particles such as styrene copolymer fine particles, polycarbonate fine particles, polyethylene fine particles, polystyrene fine particles, benzoguanamine resin fine particles; And inorganic materials.

The organic fine particles are preferably spherical in that the light scattering state can be homogenized. At this time, the diameter of the organic fine particles may be 1 to 10 um, and preferably 2 to 8 um. When the diameter of the organic fine particles is included in the above range, there is an advantage that the anti-glare property is improved.

The inorganic material is not particularly limited, and a metal oxide may be preferably used.

The metal oxide is Li, Be, B, Na, Mg, Al, Si, K, Ca, Sc, V, Cr, Mn, Fe, Ni, Cu, Zn, Ga, Ge, Rb, Sr, Y, Mo, Cs, Ba, La, Hf, W, Tl, Pb, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Ti, Sb, Sn, Zr, Nb, It may be an oxide comprising one or more metals selected from the group consisting of Ce, Ta, In and combinations thereof.

Specifically, Al ₂ O ₃ , SiO ₂ , ZnO, BaTiO ₃ , TiO ₂ , Ta ₂ O ₅ , ITO, IZO, ATO, ZnO-Al, Nb ₂ O ₃ , SnO, MgO, and combinations thereof It may be one or more selected. If necessary, a material surface-treated with a compound having an unsaturated bond such as acrylate may also be used.

The inorganic material may have an average particle diameter of 10 to 1000nm, and more specifically, may be in the range of 100 to 500nm. At this time, when the particle size is less than the above range, a sufficient scattering effect of the light emitted from the sensitizing luminescent material cannot be expected, and if it exceeds the above range, a hard coating layer, a photo-curable adhesive that can be settled in the composition or produced using the same The surface of the layer, the thermosetting adhesive layer, the pressure-sensitive adhesive layer, the substrate layer, etc., may cause uneven surfaces.

The scattering particles may be included in an amount of 1 to 10% by weight, preferably 2 to 8% by weight, and more preferably 3 to 7% by weight based on 100% by weight of the entire light-sensitive composition for forming a hard coating layer comprising the same. When the content of the scattering particles is included below the above range, a problem in which scattering performance is insufficient may occur, and when the content of the scattering particles exceeds the above range, a problem in that the transmittance of the film may decrease.

Photopolymerization compound

According to an embodiment of the present invention, the above-described sensitizing luminescent composition may further include a photopolymerizable compound, and the photopolymerizable compound may include a (meth)acrylate oligomer and/or a monomer.

The (meth)acrylate oligomer may include epoxy (meth)acrylate, urethane (meth)acrylate, and urethane (meth)acrylate may be more preferably used.

The urethane (meth) acrylate may be prepared in the presence of a catalyst having a polyfunctional (meth) acrylate and an isocyanate group having a hydroxyl group in the molecule.

Specific examples of the (meth)acrylate having a hydroxy group in the molecule are 2-hydroxyethyl (meth)acrylate, 2-hydroxyisopropyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, capro One or more selected from the group consisting of a lactone ring-opening hydroxyacrylate, a pentaerythritol tri/tetra(meth)acrylate mixture and a dipentaerythritolpenta/hexa(meth)acrylate mixture may be selected.

Further, specific examples of the compound having an isocyanate group include 1,4-diisocyanatobutane, 1,6-diisocyanatohexane, 1,8-diisocyanatooctane, and 1,12-diisocyanatododecane, 1 ,5-diisocyanato-2-methylpentane, trimethyl-1,6-diisocyanatohexane, 1,3-bis(isocyanatomethyl)cyclohexane, trans-1,4-cyclohexene diisocyanate, 4, 4'-methylene bis (cyclohexyl isocyanate), isophorone diisocyanate, toluene-2,4-diisocyanate, toluene-2,6-diisocyanate, xylene-1,4-diisocyanate, tetramethylxylene-1 ,3-diisocyanate, 1-chloromethyl-2,4-diisocyanate, 4,4'-methylenebis(2,6-dimethylphenylisocyanate), 4,4'-oxybis(phenylisocyanate), hexamethylenedi Trifunctional isocyanates derived from isocyanates; And trimethane propanol adduct toluene diisocyanate; may be selected from one or more selected from the group consisting of.

The monomer may be used in the art, specifically, a photopolymerizable functional group, for example, a compound containing an unsaturated group such as (meth)acryloyl group, vinyl group, styryl group, allyl group in the molecule, , Preferably, it is preferable to use a compound containing a (meth)acryloyl group.

The (meth)acryloyl group-containing monomers include neopentyl glycol acrylate, 1,6-hexanediol (meth)acrylate, propylene glycol di(meth)acrylate, triethylene glycol di(meth)acrylate, di Propylene glycol di(meth)acrylate, polyethylene glycol di(meth)acrylate, polypropylene glycol di(meth)acrylate, trimethylolpropane tri(meth)acrylate, trimethylolethane tri(meth)acrylate, 1, 2,4-cyclohexane tetra(meth)acrylate, pentaglycerol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, pentaerythritol tri(meth)acrylate, dipentaerythritol tri(meth)acrylate, Dipentaerythritol penta(meth)acrylate, dipentaerythritol tetra(meth)acrylate, dipentaerythritol hexa(meth)acrylate, tripentaerythritol tri(meth)acrylate, tripentaerythritol hexatri(meth)acrylate , Bis(2-hydroxyethyl)isocyanurate di(meth)acrylate, hydroxyethyl(meth)acrylate, hydroxypropyl(meth)acrylate, hydroxybutyl(meth)acrylate, isooctyl( With meth)acrylate, iso-dexyl (meth)acrylate, stearyl (meth)acrylate, tetrahydrofurfuryl (meth)acrylate, phenoxyethyl (meth)acrylate, isobornol (meth)acrylate One or more selected from the group consisting of can be selected.

The above-mentioned (meth)acrylate oligomers and/or monomers can be used either individually or in combination of two or more.

The photopolymerizable compound described above may be included in an amount of 1 to 80% by weight, preferably 5 to 70% by weight, and more preferably 10 to 60% by weight, based on 100% by weight of the entire reaction composition for forming a hard coating layer comprising the same. have. When the content of the photopolymerizable compound is less than the above range, a problem that the hardness is lowered may occur, and when it exceeds the above range, a problem that the curling becomes severe may occur.

Light polymerization Initiator

The sensitive light-emitting composition according to an embodiment of the present invention may further include a photopolymerization initiator.

The photopolymerization initiator may be used without particular limitation as long as it is used in the art, specifically 2-methyl-1-[4-(methylthio)phenyl]2-morphopropanone-1, diphenylketone benzyldimethylketal, 2-hydroxy-2-methyl-1-phenyl-1-one, 4-hydroxycyclophenylketone, dimethoxy-2-phenylacetophenone, anthraquinone, fluorene, triphenylamine, carbazole, 3-methyl It may be one or more selected from the group consisting of acetophenone, 4-knoacetophenone, 4,4-dimethoxyacetophenone, 4,4-diaminobenzophenone, 1-hydroxycyclohexylphenylketone and benzophenone.

The photopolymerization initiator may be included in an amount of 0.1 to 20% by weight, preferably 0.5 to 10% by weight, based on 100% by weight of the entire light-sensitive composition for forming a hard coating layer comprising the same. When the content of the photopolymerization initiator is less than the above range, the curing rate may be lowered, and if it exceeds the above range, cracking may occur in the hard coating layer due to overcuring.

solvent

The sensitive light-emitting composition according to one embodiment of the present invention may further include a solvent.

The solvent may be used without particular limitation as long as it is used in the art. Specifically, ethylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, and ethylene glycol monobutyl ether, Diethylene glycol dialkyl ethers such as diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, and diethylene glycol dibutyl ether; Ethylene glycol alkyl ether acetates such as methyl cellosolve acetate and ethyl cellosolve acetate; Alkylene glycol alkyl ether acetates such as propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, and propylene glycol monopropyl ether acetate; Alkoxyalkyl acetates such as methoxybutyl acetate and methoxypentyl acetate; Aromatic hydrocarbons such as benzene, toluene, xylene, and mesitylene; Ketones such as methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone, and cyclohexanone; alcohols such as ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol, and glycerin; Esters such as ethyl 3-ethoxypropionate and methyl 3-methoxypropionate; and cyclic esters such as γ-butyrolactone.

The solvent may be included in an amount of 10 to 95% by weight, specifically 15 to 90% by weight, and more specifically 20 to 80% by weight with respect to 100% by weight of the total light-sensitive luminescent composition for forming a hard coating layer comprising the same. When the content of the solvent is included below the above range, the viscosity of the composition containing the composition is improved to reduce workability, and when it is included above the above range, it may take a long time in the curing process to cause economical problems. .

additive

The sensitizing luminescent composition according to an embodiment of the present invention may further include an additive.

The additives may be selectively added as necessary, for example, other polymer compounds, curing agents, leveling agents, adhesion promoters, antioxidants, ultraviolet absorbers, anti-agglomeration agents, and the like.

Specifically, the other polymer compounds include curable resins such as epoxy resins and maleimide resins, polyvinyl alcohol, polyacrylic acid, polyethylene glycol monoalkyl ether, polyfluoroalkyl acrylate, polyester, and thermoplastic resins such as polyurethane. However, it is not limited thereto.

The curing agent is used to increase the core hardening and mechanical strength, specifically, but not limited to, epoxy compounds, polyfunctional isocyanate compounds, melamine compounds and oxetane compounds.

In the curing agent, the epoxy compound is more specifically bisphenol A-based epoxy resin, hydrogenated bisphenol A-based epoxy resin, bisphenol F-based epoxy resin, hydrogenated bisphenol F-based epoxy resin, no-block type epoxy resin, other aromatic epoxy resins, alicyclic epoxy resins , Glycidyl ester-based resins, glycidyl-amine-based resins, brominated derivatives of the epoxy resins, aliphatic, alicyclic or aromatic epoxy compounds other than the epoxy resins and brominated derivatives thereof, butadiene (co)polymer epoxides, isoprene (co ) Polymer epoxides, glycidyl (meth)acrylate (co)polymers, and triglycidyl isocyanurate.

More specifically, the oxetane compound in the curing agent may include carbonate bisoxetane, xylene bisoxetane, adipate bisoxetane, terephthalate bisoxetane and cyclohexanedicarboxylic acid bisoxetane.

The curing agent may be used in combination with a curing agent, an epoxy group of the epoxy compound, a curing auxiliary compound capable of ring-opening polymerization of the oxetane skeleton of the oxetane compound.

Examples of the curing auxiliary compound include polyvalent carboxylic acids, polyvalent carboxylic anhydrides, and acid generators. The polyhydric carboxylic acid anhydride may be used as a commercially available epoxy resin curing agent. Examples of commercially available products include Adeka Hadona, EH-700 (manufactured by Adeka Industrial Co., Ltd.), Rikasitdo HH (manufactured by Shin Nippon Ewha Co., Ltd.), and MH-700 (manufactured by Shin Nippon Iwa Co., Ltd.). The above-mentioned curing agent and curing auxiliary compound may be used alone or in combination of two or more.

As the leveling agent, a commercially available surfactant can be used, which can be used to further improve the film formation of the composition, and silicone-based, fluorine-based, ester-based, cationic, anionic, nonionic, and amphoteric surfactants are preferred. Can be used.

The silicone surfactants include, for example, commercially available products such as DC3PA, DC7PA, SH11PA, SH21PA and SH-8400 from Dow Corning Toray Silicone, and TSF-4440, TSF-4300, TSF-4445, TSF-4446 from GE Toshiba Silicone. , TSF-4460 and TSF-4452.

The fluorine-based surfactants include, for example, commercially available products, Megapieces F-470, F-471, F-475, F-482, and F-489 of Dai Nippon Ink Chemical Co., Ltd.

In addition, other commercially available products include KP (Shin-Etsu Chemical Co., Ltd.), PolyFlow (POLYFLOW) (Kyoisha Chemical Co., Ltd.), EFTOP (Tochem Products Co., Ltd.), Megapack (MEGAFAC) (Dani Nippon Ink Chemical Industry Co., Ltd.), Florad (Sumitomo 3M Co., Ltd.), Asahi Guard, Surflon (above, Asahi Glass Co., Ltd.), SOLSPERSE (Lubrisol) , EFKA (EFKA Chemicals), PB 821 (Ajinomoto Co., Ltd.) and Disperbyk-series (BYK-chemi).

The cationic surfactants include, for example, amine salts such as stearylamine hydrochloride and lauryl trimethylammonium chloride, or quaternary ammonium salts.

The anionic surfactant is, for example, higher alcohol sulfate ester salts such as sodium lauryl alcohol sulfate ester and sodium oleyl alcohol sulfate, alkyl sulfates such as sodium lauryl sulfate and ammonium lauryl sulfate, sodium dodecylbenzenesulfonate And alkylarylsulfonates such as sodium dodecylnaphthalenesulfonate.

The nonionic surfactant is, for example, polyoxyethylene alkyl ether, polyoxyethylene aryl ether, polyoxyethylene alkyl aryl ether, other polyoxyethylene derivatives, oxyethylene/oxypropylene block copolymer, sorbitan fatty acid ester , Polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester, glycerin fatty acid ester, polyoxyethylene fatty acid ester and polyoxyethylene alkylamine.

The above-described surfactants may be used alone or in combination of two or more.

The type of the adhesion promoter is not particularly limited, and specific examples of the adhesion promoter that can be used include vinyl trimethoxysilane, vinyl triethoxysilane, vinyl tris(2-methoxyethoxy)silane, and N-(2-aminoethyl )-3-aminopropylmethyldimethoxysilane, N-(2-aminoethyl)-3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3 -Glycidoxypropylmethyldimethoxysilane, 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, 3-chloropropylmethyldimethoxysilane, 3-chloropropyltrimethoxysilane, 3-methacryloxy And propyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, 3-isocyanatepropyltrimethoxysilane, and 3-isocyanatepropyltriethoxysilane.

The adhesion promoters may be used alone or in combination of two or more.

The type of the antioxidant is not particularly limited, and 2,2'-thiobis(4-methyl-6-t-butylphenol), 2,6-di-t-butyl-4-methylphenol, and the like can be mentioned. .

The type of the ultraviolet absorber is not particularly limited, and specific examples that may be used include 2-(3-tert-butyl-2-hydroxy-5-methylphenyl)-5-chlorobenzothiazole, alkoxybenzophenone, and the like. .

The type of the anti-agglomeration agent is not particularly limited, and specific examples that can be used include sodium polyacrylate.

< Photocurable Adhesive layer >

The photocurable adhesive layer according to one aspect of the present invention has an advantage of improving the visibility of a laser pointer emitting light having a wavelength included within a range of 600 to 700 nm by including the cured product of the sensitive light-emitting composition of the present invention.

The method of forming the photo-curable adhesive layer can be used without particular limitation as long as it is used in the art, for example, dropping the light-sensitive adhesive composition for forming the photo-curable adhesive layer of the present invention in an uncured state between two substrates to be adhered. Thereafter, a method of forming an adhesive layer by uniformly spreading with a roll or the like while expanding and compressing the adhesive, followed by photocuring the adhesive, is not limited thereto.

The coating method of the photosensitive adhesive layer-forming sensitive light-emitting composition is also not particularly limited as long as it is used in the art, for example, various coating methods such as a doctor blade, a wire bar, a die coater, a comma coater, and a gravure coater. .

According to one embodiment of the present invention, the sensitive light-emitting composition may be used for forming a photocurable adhesive layer by further comprising at least one selected from the group consisting of photopolymerizable compounds, photopolymerization initiators, solvents, and additives. At this time, the specific contents of the photopolymerizable compound, the photopolymerization initiator, the solvent, and the additive may be applied in the same manner as used for forming the above-mentioned hard coating layer.

According to an embodiment of the present invention, when the photosensitive adhesive layer is used for forming the photosensitive adhesive layer, the photosensitive adhesive light emitting composition comprising the photosensitive adhesive layer for forming the photosensitive adhesive layer comprises 0.1 to 15 wt% %, preferably 1 to 10% by weight, more preferably 2 to 8% by weight. When the content of the sensitizing luminescent material is included below the above range, the luminescence is weak, which may cause a problem of poor visibility of the laser, and when it exceeds the above range, the compatibility decreases and precipitation occurs or high concentration? A problem that the luminescence property decreases may occur.

<Thermosetting Adhesive layer >

The thermosetting adhesive layer according to an aspect of the present invention has an advantage of improving the visibility of a laser pointer emitting light of a wavelength included within a range of 600 to 700 nm by including the cured product of the sensitive light-emitting composition of the present invention.

The method of forming the thermosetting adhesive layer may be used without particular limitation as long as it is a general one used in the art, and may be the same as the method of forming the photocurable adhesive layer described above.

The sensitive light-emitting composition according to an embodiment of the present invention further includes one or more selected from the group consisting of a thermosetting resin and a first crosslinking agent, and thus can be used as a sensitive light-emitting composition for forming a thermosetting adhesive layer.

According to an embodiment of the present invention, when the sensitizing luminescent composition is used for forming a thermosetting adhesive layer, the sensitizing luminescent material is 0.1 to 15% by weight, based on 100% by weight of the entire sensitizing luminescent composition for forming a thermosetting adhesive layer comprising it, Preferably 1 to 10% by weight, more preferably 2 to 8% by weight may be included. When the content of the sensitizing luminescent material is included below the above range, the luminescence is weak, which may cause a problem of poor visibility of the laser, and when it exceeds the above range, compatibility is deteriorated to cause precipitation or high concentration? A problem that the luminescence property is lowered may occur.

Thermosetting resin

According to one embodiment of the present invention, the sensitive light-emitting composition may further include a thermosetting resin.

The thermosetting resin is not particularly limited as long as it is generally used in the art, and specifically, isocyanate-based, polyvinyl alcohol-based, gelatin-based, vinyl-polymer-based latex-type and water-soluble polyester-based, etc. may be mentioned. It is preferable to use a polyvinyl alcohol system in consideration of the affinity and the like.

As the polyvinyl alcohol-based resin, modified polyvinyl alcohol resins such as acetoacetyl group modification, carboxyl group modification, methylol group modification, amino group modification, etc. may be used, and acetoacetyl group-modified polyvinyl alcohol system excellent in durability due to high reactivity It is more preferable to use a resin.

The acetoacetyl group-modified polyvinyl alcohol-based resin can be obtained by reacting a polyvinyl alcohol-based resin with diketene by a known method. Specifically, after dispersing the polyvinyl alcohol-based resin in a solvent such as acetic acid, a method of adding diketene thereto, the polyvinyl alcohol-based resin is previously dissolved in a solvent such as dimethylformamide or dioxane, and then diketen It can be obtained by a method of adding, or a method in which a diketen gas or a liquid diketen is brought into direct contact with a polyvinyl alcohol-based resin. The acetoacetyl group-modified polyvinyl alcohol-based resin is not particularly limited as long as it has an acetoacetyl group-modified degree of 0.1 mol% or more, but is 0.1 to 40 mol%, preferably 1 to 20 mol%, and more preferably 2 to 7 Mol%. When the degree of acetoacetyl group modification is less than the above range, the water resistance of the adhesive layer may be insufficient, and when it exceeds the above range, the effect of improving water resistance may be insignificant.

First Crossing

According to one embodiment of the present invention, the sensitizing luminescent composition may further include a first crosslinking agent.

The first crosslinking agent is not particularly limited as long as it is generally used in the art, but it is preferable to use glyoxylate in terms of improving adhesion.

As the glyoxylate, an alkali metal salt or an alkaline earth metal salt of glyoxylic acid may be used. Since the alkali metal salt and the alkaline earth metal salt of the glyoxylic acid can obtain almost the same effect, there is no particular restriction on their use. It is presumed that both the alkali metal and the alkaline earth metal have low electronegativity, and the carboxylic acid salt of the metal or earth metal has similar chemical properties. In addition, since the part acting as a crosslinking agent of the acetoacetyl group-modified polyvinyl alcohol is an aldehyde group of glyoxylate, it can be considered that the metal or earth metal will exhibit the same effect.

As the glyoxylate, alkali metal salts such as lithium glyoxylate, sodium glyoxylate and potassium glyoxylate, alkali earth metal salts such as magnesium glyoxylate, calcium glyoxylate, strontium glyoxylate, and barium glyoxylate may be used. Can be. Among these, considering the solubility in water, it is preferable to use an alkali metal salt, and more preferably to use sodium glyoxylate.

The first crosslinking agent may be included in an amount of 3 to 25% by weight, preferably 5 to 20% by weight, based on 100% by weight of the total light-sensitive composition for forming a thermosetting adhesive layer comprising the same. When the content of the first crosslinking agent is included within the above range, water resistance may be improved, and there is an advantage of preventing deterioration of optical properties such as transmittance or polarization.

< Adhesive layer >

The pressure-sensitive adhesive layer according to an aspect of the present invention has an advantage of improving the visibility of a laser pointer emitting light having a wavelength included in a range of 450 to 600 nm by including a cured product of the sensitive light-emitting composition of the present invention.

The method of forming the pressure-sensitive adhesive layer can be used without particular limitation as long as it is a general one used in the art.

The sensitive light-emitting composition according to one embodiment of the present invention may further be used as a sensitive light-emitting composition for forming an adhesive layer by further comprising at least one selected from the group consisting of an acrylic copolymer and a second crosslinking agent.

According to one embodiment of the present invention, when the sensitizing luminescent composition is used for forming the pressure-sensitive adhesive layer, the sensitizing luminescent material is 0.1 to 15% by weight, preferably 100 to 100% by weight of the total sensitizing luminescent composition for forming the pressure-sensitive adhesive layer comprising it It may be included in 1 to 10% by weight, more preferably 2 to 8% by weight. When the content of the sensitizing luminescent material is included below the above range, the luminescence is weak, which may cause a problem of poor visibility of the laser, and when it exceeds the above range, compatibility is deteriorated to cause precipitation or high concentration? A problem that the luminescence property is lowered may occur.

Acrylic copolymer

According to one embodiment of the present invention, the sensitive light-emitting composition may further include an acrylic copolymer.

The acrylic copolymer may be a copolymer of a (meth)acrylate monomer having an alkyl group having 1 to 12 carbon atoms and a monomer having a crosslinkable functional group as an adhesive resin. Here, (meth)acrylate means both acrylate and methacrylate.

Examples of the (meth)acrylate monomer having an alkyl group having 1 to 12 carbon atoms include n-butyl (meth)acrylate, 2-butyl (meth)acrylate, t-butyl (meth)acrylate, and 2-ethylhexyl (meth) )Acrylate, ethyl (meth)acrylate, methyl (meth)acrylate, methylethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, pentyl (meth)acrylate, n-octyl (meth)acrylate, isooctyl (meth)acrylate, nonyl (meth)acrylate, decyl (meth)acrylate, lauryl (meth)acrylate, and the like. It can be used by mixing.

Among these, n-butyl acrylate, 2-ethylhexyl acrylate or mixtures thereof are preferred.

The (meth)acrylate monomer having an alkyl group having 1 to 12 carbon atoms may be included in an amount of 80 to 99% by weight, and preferably 90 to 95% by weight based on 100% by weight of the total monomer used in the preparation of the acrylic copolymer. good. If the content is less than 80% by weight, the adhesive strength is insufficient, and if it is more than 99% by weight, the cohesive force may be lowered.

The monomer having a crosslinkable functional group is a component for providing durability and cutting property by reinforcing the cohesive strength or adhesive strength of the pressure-sensitive adhesive composition by chemical bonding, such as a monomer having a hydroxy group, a monomer having a carboxyl group, a monomer having an amide group, 3 And monomers having a secondary amine group. These may be used alone or in combination of two or more.

As the monomer having the hydroxy group, 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 2-hydroxybutyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate , 6-hydroxyhexyl (meth)acrylate, 2-hydroxyethylene glycol (meth)acrylate, 2-hydroxypropylene glycol (meth)acrylate, hydroxyalkylene glycol having 2 to 4 carbon atoms in the alkylene group (Meth)acrylate, 4-hydroxybutyl vinyl ether, 5-hydroxypentyl vinyl ether, 6-hydroxyhexyl vinyl ether, 7-hydroxyheptyl vinyl ether, 8-hydroxyoctyl vinyl ether, 9-hydroxy Nonyl vinyl ether, 10-hydroxydecyl vinyl ether, and the like, and 4-hydroxybutyl vinyl ether is preferable.

As the monomer having the carboxyl group, monovalent acids such as (meth)acrylic acid and crotonic acid; Diacids such as maleic acid, itaconic acid and fumaric acid, and monoalkyl esters thereof; 3-(meth)acryloylpropionic acid; Anhydrous succinic acid ring-opening adduct of 2-hydroxyalkyl (meth)acrylate having 2 to 3 carbon atoms of an alkyl group, and succinic anhydride ring-opening adduct of hydroxyalkylene glycol (meth)acrylate having 2 to 4 carbon atoms of an alkylene group And a compound obtained by ring-opening addition of succinic anhydride to a caprolactone adduct of 2-hydroxyalkyl (meth)acrylate having 2 to 3 carbon atoms in the alkyl group, of which (meth)acrylic acid is preferred.

Examples of the monomer having an amide group include (meth)acrylamide, N-isopropylacrylamide, N-tert-butylacrylamide, 3-hydroxypropyl (meth)acrylamide, 4-hydroxybutyl (meth)acrylamide, 6-hydroxyhexyl (meth)acrylamide, 8-hydroxyoctyl (meth)acrylamide, 2-hydroxyethylhexyl (meth)acrylamide, and the like, and among these, (meth)acrylamide is preferable. As a monomer having a tertiary amine group, N,N-(dimethylamino)ethyl (meth)acrylate, N,N-(diethylamino)ethyl (meth)acrylate, N,N-(dimethylamino)propyl (meth )Acrylates and the like.

The monomer having a crosslinkable functional group is preferably included in 1 to 10% by weight, more preferably 1 to 8% by weight relative to 100% by weight of the total monomer used in the production of the acrylic copolymer. If the content is less than 1% by weight, the cohesive force of the pressure-sensitive adhesive may be reduced, and durability may be deteriorated. If it is more than 10% by weight, the adhesive strength may be reduced due to a high gel fraction and cause problems in durability.

In addition, other polymerizable monomers other than the monomers may be further included in a range that does not decrease the adhesion, for example, 10% by weight or less.

The method for producing the copolymer is not particularly limited, and can be prepared using a method such as bulk polymerization, solution polymerization, emulsion polymerization or suspension polymerization, which is commonly used in the art, and solution polymerization is preferred. In addition, a solvent commonly used in polymerization, a polymerization initiator, a chain transfer agent for molecular weight control, and the like can be used.

It is preferable that the copolymer has a weight average molecular weight (polystyrene conversion, Mw) measured by gel permeation chromatography (GPC) of 50,000 to 2,000,000, and 400,000 to 2,000,000.

Second Crossing

According to one embodiment of the present invention, the sensitizing luminescent composition may further include a second crosslinking agent.

The second crosslinking agent may be the same component as the first crosslinking agent described above, or may be a different component.

The second crosslinking agent is a component for enhancing the cohesive force of the adhesive by appropriately crosslinking the aforementioned acrylic copolymer, and its type is not particularly limited. For example, isocyanate-based compounds, epoxy-based compounds, and the like can be used, and these may be used alone or in combination of two or more.

The isocyanate-based compounds include tolylene diisocyanate, xylene diisocyanate, 2,4-diphenylmethane diisocyanate, 4,4-diphenylmethane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, and tetramethyl xylene di Diisocyanate compounds such as isocyanate and naphthalene diisocyanate; An adduct obtained by reacting 3 moles of a diisocyanate compound with 1 mole of a polyhydric alcohol-based compound such as trimethylolpropane, an isocyanurate product obtained by self-condensing 3 moles of a diisocyanate compound, and diisocyanate obtained from 2 moles of 3 moles of a diisocyanate compound And polyfunctional isocyanate compounds containing three functional groups such as burette, triphenylmethane triisocyanate, and methylene bistriisocyanate in which the remaining 1 mole of diisocyanate is condensed in urea.

Examples of the epoxy compound include ethylene glycol diglycidyl ether, diethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, tripropylene glycol diglycidyl ether, and polypropylene Glycol diglycidyl ether, neopentyl glycol diglycidyl ether, 1,6-hexanediol diglycidyl ether, polytetramethylene glycol diglycidyl ether, glycerol diglycidyl ether, glycerol triglycidyl ether , Diglycerol polyglycidyl ether, polyglycerol polyglycidyl ether, resolcin diglycidyl ether, 2,2-dibromoneopentyl glycol diglycidyl ether, trimethylolpropane triglycidyl ether, pentaerythrate Lithol polyglycidyl ether, sorbitol polyglycidyl ether, adipic acid diglycidyl ester, phthalic acid diglycidyl ester, tris (glycidyl) isocyanurate, tris (glycidoxyethyl) isocyanurate And rate, 1,3-bis(N,N-glycidylaminomethyl)cyclohexane, N,N,N',N'-tetraglycidyl-m-xylylenediamine, and the like.

In addition, a melamine-based compound may be used alone or in combination of two or more kinds together with the isocyanate-based compound and the epoxy-based compound.

Examples of the melamine-based compound include hexamethylolmelamine, hexamethoxymethylmelamine, and hexabutoxymethylmelamine.

The second crosslinking agent is preferably included in 0.1 to 15 parts by weight based on 100 parts by weight of the acrylic copolymer based on the solid content, more preferably 0.1 to 5 parts by weight. When the content is less than 0.1 part by weight, the cohesive force becomes small due to the insufficient crosslinking degree, which may lead to deterioration in durability such as excitation and spoil the cutability. If it exceeds 15 parts by weight, a problem of relaxation of residual stress may occur due to excessive crosslinking reaction. Can be.

< Base layer >

The base layer of the optical film according to an aspect of the present invention has the advantage of improving the visibility of a laser pointer emitting light of a wavelength included in the range of 600 to 700 nm by including the cured product of the sensitive light-emitting composition of the present invention. .

According to one embodiment of the present invention, the sensitive light-emitting composition may be used for forming a base layer of an optical film by further including a base resin.

According to an embodiment of the present invention, when the sensitizing luminescent composition is used for forming a substrate layer, the sensitizing luminescent material is 0.1 to 15% by weight, preferably 100% by weight, based on 100% by weight of the entire sensitizing luminescent composition for forming a substrate layer comprising the same Is 1 to 10% by weight, more preferably 2 to 8% by weight may be included. When the content of the sensitizing luminescent material is included below the above range, the luminescence is weak, which may cause a problem of poor visibility of the laser, and when it exceeds the above range, the compatibility decreases and precipitation occurs or high concentration? A problem that the luminescence property decreases may occur.

The base resin may be used without particular limitation as long as it can form a transparent plastic film, for example, a cycloolefin-based unit having a monomer unit containing a cycloolefin such as norbornene or polycyclic norbornene-based monomer. Cellulose selected from derivatives, diacetyl cellulose, triacetyl cellulose, acetyl cellulose butylate, isobutyl ester cellulose, propionyl cellulose, butyryl cellulose or acetyl propionyl cellulose, ethylene-vinyl acetate copolymer, polyester, polystyrene, poly Amide, polyetherimide, polyacrylic, polyimide, polyethersulfone, polysulfone, polyethylene, polypropylene, polymethylpentene, polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, polyvinyl acetal, polyether ketone, poly Ether ether ketone, polyether sulfone, polymethyl methacrylate, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polycarbonate, polyurethane, epoxy, and the like. Unstretched uniaxial or biaxial stretching Can be used.

Preferably, a polyester having excellent transparency and heat resistance, a cycloolefin-based derivative capable of coping with the enlargement of the film while having excellent transparency and heat resistance, and triacetylcellulose can be used in that it has no transparency and optical anisotropy.

<Image display device>

Another aspect of the present invention, by including at least one selected from the group consisting of the above-mentioned hard coating layer, photo-curable adhesive layer, thermosetting adhesive layer and base layer, a laser pointer emitting light of a wavelength included in the range of 600 to 700nm It is an image display device with improved visibility.

The image display device may include, for example, a liquid crystal display, OLED, and flexible display, but is not limited thereto.

Hereinafter, a preferred embodiment is presented to help the understanding of the present invention, but the following examples are merely illustrative of the present invention, and it is apparent to those skilled in the art that various changes and modifications are possible within the scope and technical scope of the present invention. It is natural that such modifications and corrections fall within the scope of the appended claims. In the following examples and comparative examples, "%" and "part" indicating content are based on weight unless otherwise specified.

Example 1 to 4 and Comparative example 1 to 3: Hard coating layer For forming Responsiveness Preparation of luminescent composition

Example One

5 parts by weight of Alexa Fluor 633 (manufactured by Thermo Fisher Scientific) as a sensitive light-emitting material, 25 parts by weight of urethane acrylate (MU9500, Miwon Corporation), 25 parts by weight of pentaerythritol triacrylate (M340, Miwon Corporation) ), 2.5 parts by weight of I-184 (Ciba Corp.) as a photopolymerization initiator, 15 parts by weight of methyl ethyl ketone (large purified gold) as a solvent, 27 parts by weight of propylene glycol monomethyl ether (large purified gold), leveling of 0.5 parts by weight as an additive The agent (BYK3570, BYK Chemisa) was blended using a stirrer and filtered using a filter made of polypropylene (PP) to prepare a sensitive light-emitting composition for forming a hard coating layer.

Example 2

5 parts by weight of Surelite APC (made by Columbia Biosciences) as a sensitive light-emitting material, 25 parts by weight of urethane acrylate (MU9500, Miwon Corporation), 25 parts by weight of pentaerythritol triacrylate (M340, Miwon Corporation), 2.5 parts by weight of I-184 (Ciba) as photopolymerization initiator, 15 parts by weight of methyl ethyl ketone (large purified gold), 27 parts by weight of propylene glycol monomethyl ether (large purified gold) as a solvent, 0.5 parts by weight of leveling agent as an additive ( BYK3570, BYK Chemisa) was blended using a stirrer, and filtered using a filter made of PP to prepare a sensitive light-emitting composition for forming a hard coating layer.

Example 3

5 parts by weight of allopicocyanine (manufactured by Sigma Aldrich) as a sensitive light emitting material, 25 parts by weight of urethane acrylate (MU9500, Miwon Corporation), 25 parts by weight of pentaerythritol triacrylate (M340, Miwon Corporation), 2.5 parts by weight of I-184 (Ciba) as photopolymerization initiator, 15 parts by weight of methyl ethyl ketone (large purified gold), 27 parts by weight of propylene glycol monomethyl ether (large purified gold) as a solvent, 0.5 parts by weight of leveling agent as an additive ( BYK3570, BYK Chemisa) were blended using a stirrer, and filtered using a filter made of polypropylene (PP) to prepare a sensitive light-emitting composition for forming a hard coating layer.

Example 4

5 parts by weight of Alexa Fluor 633 (made by Thermo Fisher Scientific) as a sensitive light-emitting material, 2 parts by weight of silicon particles (4.5 µm, momentum) as scattering particles, and 25 parts by weight of urethane acrylate (MU9500, Miwon, as a photopolymerizable compound) Firm), 25 parts by weight of pentaerythritol triacrylate (M340, Miwon Corporation), 2.5 parts by weight of I-184 (Ciba) as a photopolymerization initiator, 15 parts by weight of methyl ethyl ketone (a large gold), 27 parts by weight of propylene Glycomonomethyl ether (Golden Gold), 0.5 parts by weight of leveling agent (BYK3570, BYK Chemisa) as an additive is mixed with a stirrer, filtered using a filter made of polypropylene (PP) material, and sensitive to forming a hard coating layer. A luminescent composition was prepared.

Comparative example One

As a photopolymerizable compound, 25 parts by weight of urethane acrylate (MU9500, Miwon Corporation), 25 parts by weight of pentaerythritol triacrylate (M340, Miwon Corporation), 2.5 parts by weight of I-184 (Ciba Corp.) as a photopolymerization initiator, 20 parts as solvent Part of methyl ethyl ketone (large purified gold), 27 parts by weight of propylene glycol monomethyl ether (large purified gold), and 0.5 parts by weight of leveling agent (BYK3570, BYK Chemia) as an additive are mixed with a stirrer, and filter made of PP material It filtered using to prepare a sensitive light-emitting composition for forming a hard coating layer.

Comparative example 2

5 parts by weight of Lumogen F Blue 650 as a sensitive light-emitting material (manufactured by BASF), 25 parts by weight of urethane acrylate (MU9500, Miwon Corporation), 25 parts by weight of pentaerythritol triacrylate (M340, Miwon Corporation), 2.5 parts by weight of I-184 (Ciba) as photopolymerization initiator, 15 parts by weight of methyl ethyl ketone (large purified gold), 27 parts by weight of propylene glycol monomethyl ether (large purified gold) as a solvent, 0.5 parts by weight of leveling agent as an additive ( BYK3570, BYK Chemisa) were blended using a stirrer, and filtered using a filter made of polypropylene (PP) to prepare a sensitive light-emitting composition for forming a hard coating layer.

Comparative example 3

2 parts by weight of silicon particles as scattering particles (4.5 μm, momentum), 25 parts by weight of urethane acrylate (MU9500, Miwon Corporation), 25 parts by weight of pentaerythritol triacrylate (M340, Miwon Corporation), photopolymerization initiator 2.5 parts by weight of I-184 (Ciba), 18 parts by weight of methyl ethyl ketone (large purified gold), 27 parts by weight of propylene glycol monomethyl ether (large purified gold), 0.5 parts by weight of leveling agent (BYK3570, BYK Chemise) was blended using a stirrer, and filtered using a filter made of polypropylene (PP) to prepare a sensitive light-emitting composition for forming a hard coating layer.

Manufacturing example : Of hard coating film Produce

Manufacturing example One

The sensitive light-emitting composition for forming the hard coating layer of Example 1 was coated on a 40 μm triacetyl cellulose film to have a dry film thickness of 5 μm, and then the solvent was dried at a temperature of 80° C. for 2 minutes. A hard coating film was prepared by irradiating the dried film with ultraviolet light with an accumulated light amount of 400 mJ/cm ² .

Manufacturing example 2

A hard coating film was manufactured in the same manner as in Production Example 1, except that the sensitive light-emitting composition for forming the hard coating layer of Example 2 was used.

Manufacturing example 3

A hard coating film was manufactured in the same manner as in Production Example 1, except that the sensitive light-emitting composition for forming the hard coating layer of Example 3 was used.

Manufacturing example 4

A hard coating film was prepared in the same manner as in Preparation Example 1, except that the sensitive light-emitting composition for forming the hard coating layer of Example 4 was used and the dry film thickness was coated on a triacetyl cellulose film to be 4 μm.

Manufacturing example 5

A hard coating film was manufactured in the same manner as in Preparation Example 1, except that the sensitive light-emitting composition for forming the hard coating layer of Comparative Example 1 was used.

Manufacturing example 6

A hard coating film was manufactured in the same manner as in Production Example 1, except that the sensitive light-emitting composition for forming the hard coating layer of Comparative Example 2 was used.

Manufacturing example 7

A hard coating film was manufactured in the same manner as in Production Example 4, except that the sensitive light-emitting composition for forming the hard coating layer of Comparative Example 3 was used.

Experimental Example One. Responsiveness Measurement of maximum absorption wavelength of luminescent material

The maximum absorption wavelength of the sensitive light-emitting material was measured using UV-Vis. (UV-2450, Shimadzu), and the results are shown in Table 1 below.

Experimental Example 2. Red laser Visibility check

After bonding the hard coating film prepared in the above-mentioned manufacturing example with an adhesive to the surface of the image display device, a red laser pointer (635 nm) was pointed to the surface of the hard coating film while the screen of the image display device was turned on in white. At this time, the laser pointer was irradiated in the direction of 45° with respect to the normal of the film, and the visibility of the laser pointer in the front direction (normal direction) of the film was confirmed and evaluated by the following evaluation criteria. The results are shown in Table 1 below.

<Evaluation criteria>

5: The laser pointer is larger and clearly visible than the original laser light

4: The laser pointer is clearly visible at the size of the original laser light.

3: Easily recognized at the position indicated by the laser pointer

2: The position indicated by the laser pointer can be discerned, but the brightness is dark, making visibility difficult.

1: Laser pointer not recognized

Experimental Example 3: Pencil hardness measurement

The hard coating film was fixed on the glass so that the coating surface of each hard coating film prepared in the above manufacturing example faces the upper surface, and the hardness when a load of 1 kg was applied was measured. Each hard coating film was tested five times each, and the hardness secured at least four times was described as the pencil hardness of the coating film, and the results are shown in Table 1 below.

Experimental Example 4: Scratch resistance evaluation

The hard coating film was fixed on the glass so that the coated surface of each hard coating film prepared in the above manufacturing example faces the upper surface, and a reciprocating scratch test was performed 10 times using steel wool (#0000) under a load of 250 g/cm ² . It was carried out. Evaluation criteria are as follows, and the results are shown in Table 1 below.

<Evaluation criteria>

○: 10 or less scratches

△: More than 10 scratches and 20 or less scratches

×: more than 20 scratches

Experiment 5: Adhesion Experiment

After fixing the hard coating film on the glass so that the coating surface of each hard coating film prepared in the above manufacturing example faces the upper surface, and then making 11 squares by drawing 11 straight lines in each 1 mm interval on the coating surface with a cutter knife , Peeling test was performed using a tape (CT-24, Nichi Spinning Co., Ltd.) and calculated by the following Equation 1, and the results are shown in Table 1 below.

[Equation 1]

Adhesion = n/100

(In Equation 1 above, n represents the number of squares that have not been peeled off.)

Responsive luminescent composition Hard coating film Maximum absorption wavelength (nm) Laser visibility Pencil hardness Scratch resistance Adhesion Example 1 Preparation Example 1 632 4 3H ○ 100/100 Example 2 Preparation Example 2 652 4 3H ○ 100/100 Example 3 Preparation Example 3 650 4 3H ○ 100/100 Example 4 Preparation Example 4 632 5 3H ○ 100/100 Comparative Example 1 Preparation Example 5 - One 3H ○ 100/100 Comparative Example 2 Preparation Example 6 377 2 3H ○ 100/100 Comparative Example 3 Preparation Example 7 - 2 3H ○ 100/100

Referring to Table 1, the hard coating films (Preparation Examples 1 to 4) prepared using the composition for forming a hard coating layer (Examples 1 to 4) containing the sensitive light emitting composition of the present invention are the sensitive light emitting compositions of the present invention. As with the hard coating film (Comparative Examples 5 to 7) prepared using the composition for forming a hard coating layer (Comparative Examples 1 to 3) that does not contain, there is no problem such as pencil hardness, scratch resistance, adhesion, and laser visibility is more It can be confirmed that it is excellent.

In particular, in the case of a hard coating film (Production Example 4) prepared using a composition for forming a hard coating layer comprising a sensitizing luminescent composition further comprising scattering particles (Example 4), a sensitizing luminescent composition that does not further contain scattering particles It can be seen that the laser visibility is more excellent than in the case of the hard coating films (Production Examples 1 to 3) produced using the composition for forming a hard coating layer comprising (Examples 1 to 3).

Claims (17)

Contains a sensitive light-emitting material having a maximum absorption wavelength of 600 to 700nm,
The sensitizing luminescent material is Alexa Fluor 594, Alexa Fluor 610, Alexa Fluor 633, Alexa Fluor 635, Alexa Fluor 647, Alexa Fluor 660, Alexa Fluor 680, Surelite APC, Delight 633, Allopico Choose from the group consisting of Cyanine, Chromeo 642, Surelite P3, Cy 5, Delight 649, Highlight Fluor 647, IR Dye 700DX, APC-Cy5.5, Highlight Fluor 680, Delight 680 and APC-Cy7. Sensitive luminescent composition comprising at least one. According to claim 1,
The sensitizing luminescent composition further comprises one or more selected from the group consisting of photopolymerizable compounds, photopolymerization initiators, solvents and additives. According to claim 2,
The sensitizing luminescent composition is for forming a hard coating layer. According to claim 3,
The sensitized luminescent composition further comprises a scattering particle. According to claim 3,
The sensitized luminescent composition is a sensitized luminescent composition comprising 0.1 to 15% by weight relative to 100% by weight of the entire sensitized luminescent composition for forming a hard coating layer comprising the same. According to claim 2,
The sensitizing luminescent composition is a sensitizing luminescent composition for forming a photocurable adhesive layer. The method of claim 6,
The sensitized luminescent composition is a sensitized luminescent composition comprising 0.1 to 15% by weight relative to the total 100% by weight of the responsive luminescent composition for forming a photocurable adhesive layer comprising the same. According to claim 1,
The sensitizing luminescent composition further comprises at least one selected from the group consisting of a thermosetting resin and a first crosslinking agent, and is used for forming a thermosetting adhesive layer. The method of claim 8,
The sensitizing luminescent material is a sensitizing luminescent composition comprising 0.1 to 15% by weight based on 100% by weight of the total sensitizing luminescent composition for forming a thermosetting adhesive layer comprising the same. According to claim 1,
The sensitizing luminescent material further comprises at least one selected from the group consisting of an acrylic copolymer and a second crosslinking agent, and the sensitizing luminescent composition is used for forming an adhesive layer. According to claim 1,
The sensitized luminescent composition further comprises a base resin, and is used for forming a substrate of an optical film. A hard coating layer comprising the cured product of the sensitive light-emitting composition of claim 3. A photocurable adhesive layer comprising the cured product of the sensitive light-emitting composition of claim 6. A thermosetting adhesive layer comprising a cured product of the sensitive light-emitting composition of claim 8. A pressure-sensitive adhesive layer comprising a cured product of the sensitive light-emitting composition of claim 10. A base layer of an optical film comprising the responsive luminescent composition of claim 11. An image display device comprising the layer of any one of claims 12 to 16.