KR100710735B1 - Method of manufacturing surface-enhanced luminance-enhanced film and surface-enhanced luminance-enhanced film using same - Google Patents

Abstract

The present invention relates to a method for producing a surface-enhanced luminance-enhanced film and a surface-enhanced luminance-enhanced film using the same, and more particularly, to form a surface-hardened hard coat layer on the luminance-enhanced film by an in-line coating method and to scratch. Method of manufacturing a surface enhanced brightness enhancing film that can simplify the process by increasing the surface hardness of the weakly enhanced brightness film and forming a surface hardened hard coating layer without using a transparent support and a surface enhanced brightness enhanced film using the same. It is about.

Surface Hardening, Hard Coating, Brightness Enhancement

Description

Method for Manufacturing Surface-Strengthened High-Luminance Film and Surface-Strengthened High-Luminance Film using

1 is a structural diagram of a brightness enhancing film to which a conventional hard-coated transparent support is attached;

2 is a structural diagram of a thin surface-enhanced luminance improving film in the present invention,

3 is a graph of transmittance of the surface-enhanced luminance improving film of Example 1 according to the present invention;

4 is a transmittance graph of the surface-enhanced luminance improving film of Example 2 according to the present invention;

5 is a graph of transmittance of the luminance improving film of Comparative Example 1;

6 is a graph showing transmittance of the luminance improving film of Comparative Example 2. FIG.

* Description of the symbols for the main parts of the drawings *

100: brightness enhancement film 200: surface hardening hard coating layer

The present invention relates to a method for producing a surface-enhanced luminance-enhanced film and a surface-enhanced luminance-enhanced film using the same, and more particularly, to form a surface-hardened hard coat layer on the luminance-enhanced film by an in-line coating method and to scratch. A method of manufacturing a surface enhanced luminance enhanced film which can simplify the process by increasing the surface hardness of the weakened luminance enhanced film and forming a surface hardened hard coating layer without using a transparent support and a surface enhanced luminance enhanced film using the same. It is about.

In order to form an image through the liquid crystal display device, a polarizer disposed on both sides of the liquid crystal cell is required and a polarizer is attached to the polarizer. In order to implement various functions of the display device in the liquid crystal panel, a color preventing retardation plate, a viewing angle extension film for improving the viewing angle of the liquid crystal display device, and a brightness enhancement film for increasing the contrast of the display device are used.

In order to prevent the surface of the optical film from being damaged or contaminated in transportation and manufacturing processes, a surface protective film is generally attached. The surface protective film may be attached in a state where the optical film is a single film, and is peeled after being attached to the LCD and other films are attached after peeling. In addition, since the liquid crystal display device does not have its own light emitting source, a light source must be installed outside, and a backlight assembly is used for this purpose. A brightness enhancement film is used to improve the brightness of the backlight, and a dual brightness enhancement film (DBEF) is mainly used as the brightness enhancement film.

However, the luminance enhancing film has a disadvantage in that scratches are easily generated due to weak surface strength. In order to increase the surface strength of the brightness enhancing film and to secure scratch resistance, the transparent support layer has been hard-coated in the past, and the transparent support is again attached to the brightness improving film by using an adhesive. 1 is a structural diagram of a hard-coating luminance enhancing film having a transparent support coated with a hard coating layer on a transparent support 300 'using an adhesive 200' in order to enhance the surface hardness of the conventional luminance improving film 100 '. It is shown.

This method is effective to increase the surface hardness, but the brightness enhancement film had the disadvantage that the thickness of the transparent support and the pressure-sensitive adhesive. In addition, there was a disadvantage inefficient because it goes through several processes in the manufacturing process.

The present invention is to overcome the above problems, by forming a surface-hardened hard coating layer on the brightness enhancement film by the in-line coating method to increase the surface hardness of the brightness enhancement film that is weak to scratch, do not use a hard-coated transparent support It is a technical object of the present invention to manufacture a surface-enhanced luminance-enhancing film that can simplify the process by forming a surface-enhanced hard coat layer immediately.

Hereinafter, the technical configuration of the present invention will be described in detail.

In the present specification, the 'luminance enhancement film' refers to a film that improves luminance and is composed of a single film, and the 'luminance enhancement optical element' refers to a form in which a luminance enhancement film is attached to a polarizing film and an LCD cell.

In the method of manufacturing a surface-enhanced luminance-enhanced film according to the present invention, a coating step of forming a surface-hardened hard coat layer by an in-line coating method, a drying step of drying the coated hard coat layer, and photocuring the dried hard coat layer It goes through a curing step. Look below.

(1) Coating step

The method of manufacturing a surface-enhanced luminance-enhanced film according to the present invention forms a surface-enhanced hard coat layer directly on the luminance-enhanced film by removing the conventional transparent support layer and applying an inline coating method.

In the present invention, the hard coating layer is applied to the luminance enhancing film by an inline coating method without forming a surface hardening hard coating layer on the luminance improving optical element.

The hard coating composition used in the hard coating layer coating step includes a curable resin containing a urethane acrylate, a curing agent, a leveling agent, a UV absorber and a dispersing agent. The material of the hard coating composition will be described.

① Curable resin

The curable resin used in the present invention uses a photocurable resin for ultraviolet curing.

Photocurable resins generally use known resins. As the photocurable resin, unsaturated polyester resins, polyfunctional acrylate resins, urethane acrylates, epoxy acrylic resins, epoxy acrylate resins and the like can be used alone or in combination.

The curable resin used in the present invention is preferably from 60% to 95% by weight, more preferably from 70% to 90% by weight relative to 100% by weight of the hard coat composition. When the curable resin is less than 60% by weight relative to 100% by weight of the hard coating composition, it is difficult to obtain high hardness due to curing, and when the curable resin is greater than 95% by weight, it is difficult to obtain a desired level of physical properties because the content of the curing agent and leveling agent is relatively small.

If the curable resin usable in the present invention exhibits the same effect, the range or content is not limited to the listed resins or contents, of course.

The curable resin used in the present invention more preferably uses an ultraviolet curable polyfunctional acrylate resin in order to obtain properties such as high hardness and transparency. UV-curable polyfunctional acrylate-based resins used in the present invention are dipentaerythritol hexaacrylte, tetramethylolmethane tetraacrylate, tetramethylolmethane triacrylate, Trimethanolpropane triacrylate, 1,6-hexanediol diacrylate, 1,6-bis (3-acryloyloxy-2-hydroxypropyloxy) hexane [ Polyfunctional alcohol derivatives such as 1,6-bis (3-acryloyloxy-2-hydroxypropyl) hexane] and urethane acrylics such as polyethylene glycol diacrylate and pentaerythritol triacrylate Acrylate, hexamethylene diisocyanate urethane prepolymer, etc. Or mixed.

It is preferable to use 10 weight%-90 weight% of said ultraviolet curable polyfunctional acrylate resin with respect to 100 weight% of curable resin, More preferably, it is 30 weight%-87 weight%. Even more preferably, 50 to 85% by weight is used.

If the UV-curable polyfunctional acrylate-based resin is less than 10% by weight in 100% by weight of the curable resin, it is difficult to obtain high hardness due to the combination of functional groups because the absolute number of functional groups is small. There is a disadvantage of weak chemical.

② hardener

The curing agent in the present invention may be appropriately selected or mixed according to the form of the functional group present in the photocurable resin, preferably isocyanate compound, epoxy compound, aziridine compound, metal chelate compound, metal alkoxide metal salt, amine A compound, a hydrazine compound, etc. are used individually or in mixture.

Isocyanate compounds in the present invention are trimethylene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, diphenylmethane isocyanate, xylene diisocyanate aromatic diisocyanate compounds such as diisocyanate, aliphatic diisocyanate such as hexamethyl diisocyanate, and the like are used alone or in combination.

In addition, the epoxy compound in the present invention is a polyethylene glycol diglycidyl ether (diglycidyl ether), diglycidyl ether (diglycidyl ether), trimethylol propane triglycidyl ether (trimethylol propane triglycidyl ether) and the like alone Or mixed.

The curing agent of the present invention is preferably used 0.1 to 15% by weight, more preferably 0.5 to 10% by weight relative to 100% by weight of the hard coat composition. Even more preferably 1% to 5% by weight.

 In the present invention, the curing agent is an additive used to control the molecular weight or the chain structure of the hard coating composition. When the curing agent is used in the above-described range, the effect of suppressing phase separation and the like is prominent. If the content of the curing agent is less than 0.1% by weight, it is difficult to expect the function of the curing agent, if the content of more than 15% by weight it is difficult to increase the hardness of the relatively low content of the curable resin.

③ Leveling agent

In the present invention, in order to even the surface of the hard coating layer is used by mixing the leveling agent in the hard coating composition. The leveling agent can be used by mixing a ketone or an ester solvent with a silicone resin. As a leveling agent by this invention, it is preferable to use a silicone diacrylate and a silicone polyacrylate compound individually or in mixture.

The content of the leveling agent is preferably 0.1% to 3% by weight relative to 100% by weight of the hard coating composition, more preferably 0.5% to 2% by weight. If the leveling agent is less than 0.1% by weight, it is difficult to expect the leveling effect, and when greater than 3% by weight, the hardness may be weakened.

④ UV absorber

In the present invention, when using the photocurable resin for ultraviolet curing, it is preferable to use an ultraviolet absorber in order to prevent degradation caused during photocuring and to improve the durability of the hard coating layer.

The ultraviolet absorber used in the present invention is preferably used alone or mixed with a salicylate ultraviolet absorber, a benzophenone ultraviolet absorber, a benzotriazole ultraviolet absorber, a cyanoacrylate ultraviolet absorber, and a benzoate ultraviolet absorber. Do.

More specifically, the ultraviolet absorber is phenyl salicylate, p-tert-butylphenyl salicylate, p-octylphenyl salicylate, 4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzobenzophenone, 2-hydroxy-4-octoxybenzophenone, 2-hydroxy-4-dodecyloxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy- 4-methoxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2-hydroxy-4-methoxy-5-sulfobenzophenone, bis (2-methoxy-4 -Hydroxy-5-benzoylphenyl) methane, 2- (2'-hydroxy-5'-methylphenyl) benzotriazole, 2- (2'-hydroxy-5'-tert-butylphenyl) benzotriazole, 2- (2'-hydroxy-3 ', 5'-di-tert-butylphenyl) benzotriazole, 2- (2'-hydroxy-3'-tert-butyl-5'-methylphenyl) -5- Chlorobenzotriazole, 2- (2'-hydroxy-3 ', 5'-di-tert-butylphenyl) -5-chlorobenzotriazole, 2- (2'-hydroxy-3', 5-di -tert-amylphenyl) benzotriazole, 2- (2'-hydroxy-4'-octoxy Phenyl) benzotriazole, 2- (2'-hydroxy-3 '-(3', 4 ', 5', 6'-tetrahydrophthalimidomethyl) -5'-methylphenyl) benzotriazole, 2,2 '-Methylenebis [4- (1,1,3,3-tetramethylbutyl) -6- (2H-benzotriazolyl-2-yl) phenol], 2- (2'-hydroxy-5'-meta Krilloxyphenyl) -2H-benzotriazole, 2,2'-methylenebis [4- (1,1,3,3-tetramethylbutyl) -6-[(2H-benzotriazol-2-yl) phenol ], And 2- (2'-hydroxy-3 ', 5'-di-t-amylphenyl) benzotriazole, 2-ethylhexyl-2-cyano-3,3'-diphenylacrylate, ethyl 2-cyano-3,3'-diphenyl acrylate or the like is used alone or in combination.

In the present invention, the content of the ultraviolet absorber is preferably used in an amount of 0.1 wt% to 15 wt%, more preferably 0.5 wt% to 10 wt%, based on 100 wt% of the hard coating composition. Even more preferably 1% to 5% by weight.

⑤ dispersant

In the present invention, an organic solvent that is a dispersant is used to apply the hard coat layer to the brightness enhancement film. In the present invention, it is preferable to use an organic solvent in which the hard coating composition can be evenly dispersed.

The organic solvent is selected in consideration of the coating property of the hard coating layer, the adhesion with the brightness enhancing film, and the enhancement of the surface hardness enhancement function.

The organic solvent used in the present invention is a C1-8 saturated hydrocarbon alcohol such as methanol, isopropanol, butanol, t-butanol, isobutanol and the like, acetone, methyl ethyl ketone, methyl isobutyl ketone and the like of ketones. Saturated hydrocarbon-based diketones having 1 to 8 carbon atoms, such as 1 to 8 saturated hydrocarbon ketones and acetyl acetone, ethyl acetate of esters, ethyl hydrocarbons of 1 to 8 carbon atoms such as butyl acetate, and ethyl alcohols of ether alcohols. Solves, methyl cellosolves, butyl cellosolves, 1-methoxy-2-propanol, and N-methyl pyrrolidone, ethyl cellosolve acetate, diacetone alcohol, and the like are used alone or in combination. Moreover, benzene, toluene, xylene, ethylbenzene, etc. which correspond to an aromatic hydrocarbon can also be used individually or in mixture.

The organic solvent is preferably used in an amount of 20 parts by weight to 110 parts by weight with respect to 100 parts by weight of the applied hard coating composition, and more preferably 30 parts by weight to 80 parts by weight. When the content of the organic solvent is less than 20 parts by weight with respect to 100 parts by weight of the hard coating composition, the viscosity is low, resulting in poor applicability and adhesion with the brightness enhancing film. By using a solvent, profitability is inferior.

The thickness of the hard coat layer according to the present invention is preferably 2 µm to 20 µm, more preferably 4 µm to 15 µm. Even more preferred is 5 μm to 10 μm. When the thickness of the hard coating layer is less than 2㎛ the thickness is too thin, it is difficult to secure scratch resistance and chemical resistance, when larger than 20㎛ has a disadvantage of low economic efficiency during spin coating.

(2) drying step

In the drying step, the organic solvent applied together with the hard coating composition in the coating step is volatilized.

The drying temperature performed in the drying step is preferably carried out at 45 ℃ to 75 ℃. More preferably, it is 55 degreeC-65 degreeC, More preferably, it is 58 degreeC-62 degreeC. If the temperature is 45 ℃ or less there is a problem that the drying time is not made properly and the drying time is long. In addition, if the drying temperature is more than 75 ℃ may affect the brightness enhancement function, economic efficiency is also low.

In addition, the drying time may vary depending on the drying temperature and is preferably 20 seconds to 70 seconds and more preferably 25 seconds to 67 seconds. Even more preferably from 30 seconds to 62 seconds. If the drying time is 20 seconds or less, the effect of drying does not appear properly, and drying for more than 70 seconds may affect the physical properties of the brightness enhancement film and the hard coating layer.

(3) curing step

In the curing step, the hard coating layer formed through the coating step and the drying step is cured.

Photocuring in the present invention proceeds to UV curing, UV curing is preferably UV curing in the energy range of 5mJ to 40mJ, more preferably 10mJ to 20mJ.

When the amount of UV curing energy is less than 5mJ, sufficient photocuring effect is not obtained, and when the amount of UV curing energy is greater than 40mJ, excessive UV curing may affect the properties of the hard coating composition.

The curing time is preferably 30 seconds to 10 minutes, more preferably 1 minute to 7 minutes. The curing time is determined in correspondence with the amount of UV curing energy. If the curing time is shorter than 30 seconds, sufficient heat curing effect cannot be obtained. If the curing time is longer than 10 minutes, the curing resin can be sufficiently cured, but the hard coating layer is excessively cured. Rather, the surface hardness can be lowered.

As such, the present invention may be applied in a simplified process by applying a coating step, a drying step, and a curing step through one continuous in-line process, and the hard coating composition applied to the surface of the luminance-enhanced film. In addition, the drying step and the curing step can be dried and cured more effectively.

The present invention forms a surface-enhanced hard coat layer directly on the luminance-enhancing film through an inline process, and completes the surface-enhanced luminance-enhancing film by drying and curing the formed hard coat layer. The hard coating layer has a technical feature of deriving an optimal content that satisfies the adhesiveness and coating property with the brightness enhancement film by mixing various compositions. The luminance-enhanced film completed using such an inline hard coating method can be made thin in thickness as well as simplify the process by not using a conventional hard coated transparent support.

Based on this technical configuration, the surface-enhanced brightness improving film of the present invention can form various hard coating layers of several μm to several tens of μm.

Figure 2 shows the structure of the surface-enhanced luminance-enhanced film according to the present invention, since the transparent support 300 'and the adhesive 200' of the hard coating is not used in FIG.

The protection scope of the present invention is, of course, inferior to the surface-enhanced luminance-enhanced film produced by the present invention as well as the surface-enhanced luminance-enhanced film produced through this. In addition, the surface-enhanced luminance enhancing film according to the present invention is a cathode ray tube (CRT), a liquid crystal display (LCD), a plasma display (PDP, plasma display pannel) and an organic light emitting display device ( OLED, organic light emitting diodes) is applicable to at least one of the group consisting of.

Hereinafter, the present invention will be described in more detail with reference to the preferred embodiments of the present invention and comparative examples.

Example  One

After manufacturing polarizing film, 3M's 'DBEF' was laminated to 90 ° and cut into 500mm horizontally and vertically, respectively, 4% by weight of curing agent, 2% by weight of leveling agent, 3% by weight of UV absorber, and the other photocurable resin. After dissolving the hard coating composition comprising xylene in the form of a solution, the solution was coated on the DBEF surface. Ultraviolet curable polyfunctional acrylate resin which mixed dipentaerythritol hexaacrylate and trimethanol propane triacrylate was used 70weight% in 100 weight% of photocurable resins. The coated hard coat layer was dried at 60 ° for 50 seconds. Then, photocuring with 15mJ UV light for 3 minutes to prepare a hard coating layer thickness of 5㎛. The weight parts of xylene were mixed in a ratio of 70 parts by weight based on 100 parts by weight of the hard coat composition.

Example  2

It was manufactured under the same conditions as in Example 1 except that the thickness of the hard coating layer was manufactured to 10 μm.

Comparative example  One

The polarizing film manufactured by the conventional method and the film which laminated | stacked 3M DBEF which is a brightness improving film were used without hard-coating.

Comparative example  2

As shown in FIG. 1, a luminance-enhanced film having a hard coat transparent support was used.

Table 1 shows the results of measuring the adhesion, pencil hardness, wear resistance, transmittance, and thickness of the optical element, which are physical properties of the surface-enhanced luminance-enhanced films obtained in Examples and Comparative Examples.

division Adhesion Pencil hardness Wear resistance Film thickness (㎛) Transmittance Example 1 100/100 2H ○ 142 45.91 Example 2 100/100 3H ○ 147 46.01 Comparative Example 1 - 6B X 137 51.01 Comparative Example 2 - 2H ○ 182-222 40.34

The adhesion, pencil hardness, and wear resistance measured in [Table 1] were measured by the following method.

(Adhesiveness)

The number of eyes with hard coating remaining on the film substrate when the surface of the hard coating layer of the brightness enhancement film was put in 100 1 mm x 1 mm cross hatching by a cutter, the cellophane adhesive tape was removed, and the cellophane adhesive tape was removed. Counted.

(Pencil hardness)

The pencil hardness of the surface of the hard coat layer of the luminance enhancing film was measured using a conventional pencil scratch tester.

(Wear resistance)

The hard coating layer was rubbed with a steel surface, and the scratches were visually observed.

Observation results were measured as follows.

○: no scratch

× scratches

As shown in Table 1, the thickness of the surface-enhanced luminance-enhanced film coated by the inline coating method may be thinner than that of the luminance-enhanced film coated with a hard coating layer on the transparent support. In addition, when looking at the pencil hardness, it can be seen that Example 1 and Example 2, which are configured by in-line coating the hard coating layer on the surface-enhanced luminance enhancing film, compared to Comparative Example 2 hard coated on the transparent support, show similar hardness.

Table 2 shows the color values of the Examples and Comparative Examples.

Item L a b Example 1 67.74 3.10 -3.68 Example 2 67.83 3.35 -3.38 Comparative Example 1 71.41 -1.03 1.24 Comparative Example 2 63.53 3.78 -3.73

L, a, and b represent color coordinates. As shown in [Table 2], it can be seen that the color coordinates of the color values in the examples and the comparative examples have obtained similar results.

3 to 6 are graphs showing transmittances of the brightness enhancing films obtained in Examples and Comparative Examples. The transmittance measurement was measured under the same conditions using a conventional method. When comparing the transmittance, it can be seen that Example 1, Example 2 and Comparative Example 2 do not have a large difference. Therefore, it can be seen that the embodiment according to the present invention can obtain a thin surface-enhanced luminance enhancing film while exhibiting the same transmission function as the comparative example of the luminance enhancing film using the transparent support.

In the above, this invention was demonstrated in detail with reference to an Example and a comparative example centering on a structure. However, the scope of the present invention is not limited to the above embodiments but may be embodied in various forms of embodiments within the appended claims. Without departing from the gist of the invention as claimed in the claims, any person of ordinary skill in the art is deemed to be within the scope of the claims underlying the present invention to the extent possible for various modifications.

In addition, the preferred range, more preferred range, and even more preferred range limitation in the present invention is to maximize the effect even more, it is possible to obtain a more satisfactory technical effect by narrowing the limited range.

Focusing on the above-described technical configuration, the present invention forms a surface-hardened hard coating layer on the luminance-enhanced film by an inline coating method, thereby increasing the surface hardness of the luminance-enhanced film weak to scratches, and without using a hard-coated transparent support. By forming a surface-hardened hard coating layer, a surface-enhanced luminance-enhancing film that can simplify the process can be manufactured.

Claims (10)

In the manufacturing method of the surface-enhanced luminance-enhanced film for forming a hard coating layer on the upper surface of the luminance-enhanced film, (a) 100% by weight of the hard coat composition comprising a curable resin, a curing agent, a leveling agent and an ultraviolet absorber, wherein the curable resin is a photocurable resin,     Iii) 1.5% by weight to 15% by weight of the curing agent,     Ii) 0.1% to 3% by weight of the leveling agent,     Iii) the ultraviolet absorber is 0.1 wt% to 15 wt%, A hard coating layer coating step using a inline coating method by mixing 20 parts by weight to 110 parts by weight of the dispersant based on 100 parts by weight of the hard coating composition; (b) drying the hard coat layer at a temperature of 45 ° C. to 75 ° C. and drying for 20 seconds to 70 seconds; And (c) UV-curing the hard coating layer to 5mJ to 40mJ, and a method for producing a surface-enhanced brightness enhancement film comprising a curing step of ultraviolet curing for 30 seconds to 10 minutes. The method of claim 1, The hard coating layer has a thickness of 2㎛ to 20㎛ characterized in that the surface-enhanced brightness improving film manufacturing method. The method of claim 1, The curable resin is a method of producing a surface-enhanced luminance-enhanced film, characterized in that the ultraviolet curable multi-functional acrylate-based resin using 10% to 90% by weight in 100% by weight of the curable resin. The method of claim 3, The ultraviolet curable polyfunctional acrylate-based resin is dipentaerythritol hexaacrylte, tetramethylolmethane tetraacrylate, tetramethylolmethane triacrylate, trimethanol propane triacrylate Trimethylolpropane triacrylate, 1,6-hexanediol diacrylate, 1,6-bis (3-acryloyloxy-2-hydroxypropyloxy) hexane [1,6- bis (3-acryloyloxy-2-hydroxypropyl) hexane, polyethylene glycol diacrylate, pentaerythritol triacrylate hexamethylene diisocyanate urethane prepolymer (hexamethylene diisocyanate urethane prepolymer) Method of producing a surface-enhanced brightness enhancement film, characterized in that at least one. The method of claim 1, The hardening agent is at least one of an isocyanate compound, an epoxy compound, an aziridine compound, a metal chelate compound, a metal alkoxide metal salt, an amine compound, a hydrazine compound. The method of claim 1, The curing agent is trimethylene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, diphenylmethane isocyanate, xylene diisocyanate, hexamethyl Hexamethyl diisocyanate, polyethylene glycol diglycidyl ether, diglycidyl ether, trimethylol propane triglycidyl ether Method of producing a surface-enhanced brightness enhancement film. The method of claim 1, The leveling agent is a silicon diacrylate or silicone polyacrylate compound, characterized in that the surface-enhanced brightness improving film production method. The method of claim 1, The ultraviolet absorber is phenyl salicylate, p-tert-butylphenyl salicylate, p-octylphenyl salicylate, 4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydride Hydroxy-4-octoxybenzophenone, 2-hydroxy-4-dodecyloxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4-meth Methoxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2-hydroxy-4-methoxy-5-sulfobenzophenone, bis (2-methoxy-4-hydroxy -5-benzoylphenyl) methane, 2- (2'-hydroxy-5'-methylphenyl) benzotriazole, 2- (2'-hydroxy-5'-tert-butylphenyl) benzotriazole, 2- ( 2'-hydroxy-3 ', 5'-di-tert-butylphenyl) benzotriazole, 2- (2'-hydroxy-3'-tert-butyl-5'-methylphenyl) -5-chlorobenzotria Sol, 2- (2'-hydroxy-3 ', 5'-di-tert-butylphenyl) -5-chlorobenzotriazole, 2- (2'-hydroxy-3', 5-di-tert- Amylphenyl) benzotriazole, 2- (2'-hydroxy-4'-octoxyphenyl) benzoate Azole, 2- (2'-hydroxy-3 '-(3', 4 ', 5', 6'-tetrahydrophthalimidomethyl) -5'-methylphenyl) benzotriazole, 2,2'-methylenebis [4- (1,1,3,3-tetramethylbutyl) -6- (2H-benzotriazol-2-yl) phenol], 2- (2'-hydroxy-5'-methacryloxyphenyl) -2H-benzotriazole, 2,2'-methylenebis [4- (1,1,3,3-tetramethylbutyl) -6-[(2H-benzotriazol-2-yl) phenol], 2- (2'-hydroxy-3 ', 5'-di-t-amylphenyl) benzotriazole, 2-ethylhexyl-2-cyano-3,3'-diphenylacrylate, ethyl-2-cyano Method of producing a surface-enhanced brightness enhancement film, characterized in that at least one of -3,3'-diphenyl acrylate. The method of claim 1, The dispersant may be a saturated hydrocarbon alcohol having 1 to 8 carbon atoms, a saturated hydrocarbon ketone having 1 to 8 carbon atoms, a saturated hydrocarbon diketone having 1 to 8 carbon atoms, a saturated hydrocarbon ester having 1 to 8 carbon atoms, or an ethyl alcohol of an ether alcohol. Solv, methyl cellosolve, butyl cellosolve, 1-methoxy-2-propanol, N-methyl pyrrolidone, ethyl cellosolve acetate, diacetone alcohol, benzene as aromatic hydrocarbon, toluene, xylene, ethylbenzene Method of producing a surface-enhanced brightness enhancement film, characterized in that at least one of. The surface-enhanced luminance-enhanced film produced by the method for producing a surface-enhanced luminance-enhanced film of claim 1.

Images