KR20070050531A - Method for manufacturing antistatic light-diffusion optical devices and antistatic light-diffusion optical devices using thereof - Google Patents

Abstract

The present invention is to provide a method for manufacturing an antistatic diffusion coating optical element, to form an antistatic layer using a spin-coating method on the upper surface of the polarizing film attached by a pressure-sensitive adhesive to the LCD cell, the antistatic By forming the diffusion coating layer on the coating layer, it can be performed simultaneously with the antistatic function and the light diffusion function.

Description

Method for manufacturing antistatic diffusion coating optical device and antistatic diffusion coating optical device using same {Method for Manufacturing Antistatic Light-Diffusion Optical Devices and Antistatic Light-Diffusion Optical Devices using

1 is a block diagram of an antistatic diffusion optical device according to an embodiment of the present invention,

2 is a graph showing transmittances of optical elements obtained in preferred embodiments 1, 2, and 3 of the present invention;

3 is a graph showing transmittances of optical elements obtained in preferred embodiments 4, 5, and 6 of the present invention;

4 is a graph showing transmittance of the optical device obtained in Comparative Example 1. FIG.

Explanation of symbols on the main parts of the drawings

100: LCD cell 200: adhesive

300: polarizing film 400: antistatic layer

500: diffusion coating layer

The present invention relates to a method for manufacturing an antistatic diffusion coating optical device and an antistatic diffusion coating optical device using the same, in particular an antistatic layer using a spin-coating method on a polarizing film attached by an adhesive to an LCD cell The present invention relates to an antistatic diffusion optical device having an antistatic function and a light diffusion function at the same time, and forming a diffusion coating layer on the antistatic coating layer, and a method of manufacturing the same.

In general, home appliances such as mobile phones, laptops, monitors, refrigerators, air conditioners and washing machines require display parts such as a light source and a diffusion film to display various functions. For these display parts, light sources of various colors including white are used. This is required.

In addition, the above display requires a film or an optical element having a function of preventing the generation of static electricity, since a problem such as adhesion of foreign matter to the surface or breaking of the liquid crystal is caused by static electricity.

Therefore, conventionally, for these various display parts, light diffusing films have been developed to increase visibility by uniformly diffusing light of a light source, and such light diffusing films include polymethyl methacrylate resin and polycarbonate resin. Unevenness is directly applied to the surface of the film substrate made of a light-transmitting resin, such as a polydisperse resin, a polymethacrylate resin, a polycarbonate resin, a polymethyl methacrylate resin, or the like. The light-diffusion film etc. which formed and formed the light-diffusion layer by apply | coating and disperse | distributing the formed thing and the composition which mix | blended and disperse | distributed the dispersing agent in light transmitting resin are known.

In addition, conventionally, a technique for attaching an antistatic layer having an antistatic function on a polarizing film using an adhesive is known.

However, in the conventional technology as described above, although an optical device having an antistatic function and an anti-acid diffusion coating layer separately attached to each polarizing film exist, optical devices that perform both functions exist. There was a problem that did not.

In addition, in order to perform the above two functions at the same time using the method of attaching the antistatic layer and the light diffusing layer to the light diffusion function to the antistatic function on the polarizing film by the adhesive, the manufacturing process is complicated and the optical device There was a problem that the thickness of the thickened.

Accordingly, the present invention has been proposed to solve the above conventional problems, and an object of the present invention is to form an antistatic layer by using a spin coating method on the polarizing film attached to the LCD cell, the charging The present invention provides a method of manufacturing an antistatic diffusion optical device capable of preventing static electricity and realizing a clear image by forming a diffusion coating layer on the prevention layer, and an antistatic diffusion optical device using the same.

Hereinafter, the present invention will be described in detail with reference to the technical spirit.

Antistatic diffusion optical device according to the present invention is cut to a predetermined size to fit the size of the LCD cell to form an antistatic layer using a spin coating coating method on the polarizing film attached to the LCD cell and the diffusion coating layer on the antistatic layer It is prepared through the step of forming.

Hereinafter, each step will be described in detail.

(1) Antistatic layer forming step

1) Antistatic layer coating step

The antistatic layer is prepared in the form of a solution by mixing an antistatic coating composition composed of a curable resin, an antistatic agent, a curing agent, a leveling agent, and an ultraviolet absorber (used when using a photocurable resin as the curable resin) with a dispersant. It is carried out by coating through a spin coating method on the polarizing film cut to size and attached to the LCD cell.

The polarizing film used in the present invention is used by cutting to a predetermined size produced by a conventional method.

The rotation speed and rotation time applied in the spin coating method of the present invention are as follows.

In the present invention, it is preferable to coat the solution obtained by mixing the antistatic coating composition with the dispersant at a rotational speed of 50 rpm to 5,000 rpm, more preferably 100 rpm to 4,000 rpm. Even more preferred spin speeds range from 500 rpm to 3,000 rpm.

If the rotation speed of the spin coating is less than 50rpm, the desired predetermined thin film may not be obtained and the antistatic layer may not be evenly applied to the surface of the polarizing film attached to the LCD cell. In addition, if greater than 5,000rpm due to the high centrifugal force difference in thickness in the center and the outer portion of the antistatic layer occurs. In addition, in order to maintain a high rotational speed can be difficult to spin coating apparatus and affect the durability of the polarizing film itself.

In addition, the spin time in the spin coating step of the present invention is preferably 10 seconds to 500 seconds, more preferably 30 seconds to 400 seconds. Even more preferably 60 to 300 seconds. The rotation time may vary depending on the viscosity of the solution in which the antistatic coating composition and the dispersant are mixed and the thickness of the antistatic layer to be coated.

If the rotation time is less than 10 seconds, it is difficult to secure sufficient time for evenly applying the antistatic layer to the polarizing film, and if it is more than 500 seconds, the economical efficiency is low.

Looking at the composition of the antistatic coating composition consisting of a curable resin, an antistatic agent, a curing agent, a leveling agent, a UV absorber used in the present invention and a dispersant mixed with the composition are as follows.

① curable resin

The curable resin used in the present invention uses at least one of a thermosetting resin or a photocurable resin.

Thermosetting resins and photocurable resins generally use known resins. Among the thermosetting resins, polycondensation type resins include phenol resins, urea resins, melamine resins, and epoxy resins, polyester resins, and the like. In this invention, these can be used individually or in mixture. As the photocurable resin, UV curable resin is generally used. 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. Curable resins usable in the present invention are of course not limited to the resins listed above as long as they exhibit the same effect.

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.

In the present invention, the curable resin can be composed of only the thermosetting resin, but the photocurable resin can also be used together. In order to have not only an antistatic effect but also physical properties, such as high hardness and transparency, it is more preferable that the photocurable resin used by this invention uses an ultraviolet curable polyfunctional group acrylate resin. In the present invention, the ultraviolet curable polyfunctional acrylate-based resin is dipentaerythritol hexaacrylte, tetramethylolmethane tetraacrylate, tetramethylolmethane triacrylate, trimethanol Propane triacrylate, 1,6-hexanediol diacrylate, 1,6-bis (3-acryloyloxy-2-hydroxypropyloxy) hexane [1, Polyfunctional alcohol derivatives such as 6-bis (3-acryloyloxy-2-hydroxypropyl) hexane] and urethane acrylics such as polyethylene glycol diacrylate and pentaerythritol triacrylate Acrylate, hexamethylene diisocyanate urethane prepolymer, etc. Use it.

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

When the UV-curable polyfunctional acrylate 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, and when it is more than 90% by weight, the hardness becomes high, but will be described later. It has the disadvantage of poor compatibility with the inhibitor.

② Antistatic Agent

The antistatic agent used in the present invention may be used alone or in combination with a conductive polymer, metal particles, inorganic oxides, metal oxides and the like.

The conductive polymer used as an antistatic agent in the present invention is polyacetylene, poly (p-phenylene) [poly (p-phenylene)], polythiophene, poly (3,4-ethylenedioxythiophene ) [Poly (3,4-ethylenedioxythiophene) (PEDOT)], polypyrrole [Polypyrrole (pyridine polymer)], poly (p-phenylene sulfide) [Poly (p-phenylene sulfide)], poly (p-phenylene vinylene ) [Poly (p-phenylene vinylene)], poly (thienylene vinylene), polyaniline (Polyaniline) and the like can be used alone or in combination.

Metal particles used as antistatic agents in the present invention are silver (Ag), gold (Au), copper (Cu), aluminum (Al), platinum (Pt), nickel (Ni), chromium (Cr), lead (Pb) , Cobalt (Co), rhodium (Rh), ruthenium (Ru), tin (Sn), iridium (Ir), palladium (Pd), titanium (Ti) and the like alone, mixed or silver (Ag) coated copper (Cu Coated with other metals like).

In the present invention, the inorganic oxide to be used refers to all oxides except organic oxides as inorganic oxides. In the present invention, it is preferable to use a metal oxide among the inorganic oxides.

Metals forming metal oxides are not limited and include sodium (Na), magnesium (Mg), potassium (K), calcium (Ca), scandium (Sc), titanium (Ti), vanadium (V), chromium (Cr), Manganese (Mn), Cobalt (Co), Iron (Fe), Copper (Cu), Zinc (Zn), Gallium (Ga), Aluminum (Al), Nickel (Ni), Copper (Cu), Rubidium (Rb), Yttrium (Y), lanthanum (La), strontium (Sr), zirconium (Zr), niobium (Nb), molybdenum (Mo) and the like can be used. These metals may form several metal oxides with one metal having a plurality of valences. It is also possible to form a multimetal oxide containing two or more metals.

In the present invention, typically, indium tin oxide (ITO), antinomy tin oxide (ATO), SiO ₂ , TiO ₂ , Al ₂ O ₃ , B ₂ O ₃ , CaO, SnO, MgO, SrO, ZnO, ZrO ₂ , Y ₂ Metal oxides such as O ₃ and La ₂ O ₃ may be used alone or in combination.

The particle diameter of the metal oxide is preferably 0.1 µm to 1 µm, more preferably 0.5 µm to 0.7 µm. If the particle diameter of the metal oxide is less than 0.1 μm, it is difficult to obtain an antistatic effect due to satisfactory light diffusion, and the light diffusion property is lowered, so that the image is discolored to aluminum color. In addition, when the particle diameter of the metal oxide is larger than 1 µm, the background of the screen to be applied is likely to be rough and the image contrast is deteriorated.

The content of the antistatic agent is preferably 0.5% to 30% by weight, more preferably 3% to 20% by weight based on 100% by weight of the antistatic coating composition. Even more preferably 7% to 15% by weight. If the content of the antistatic agent is less than 0.5% by weight, it is difficult to secure the conductivity, when the content of more than 30% by weight, the conductive effect is remarkable, but the transparency is lowered, the mass productivity and economic efficiency may be lowered.

③ curing agent

The curing agent in the present invention can be selected and mixed as appropriate depending on the form of the functional group present in the thermosetting resin or photocurable resin, preferably isocyanate compound, epoxy compound, aziridine compound, metal chelate compound, metal alkoxide Metal salts, amine compounds, hydrazine compounds and the like are used alone or in combination.

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.

It is preferable to use 0.5 to 15 weight% with respect to 100 weight% of antistatic coating compositions, More preferably, the hardening | curing agent in this invention is 1 to 10 weight%. Even more preferably 3% 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 antistatic layer 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 0.5% by weight, it is difficult to expect the function of the curing agent, and when the content of the curing agent is greater than 15% by weight, the content of the curable resin is relatively low, making it difficult to increase the hardness.

④ Leveling agent

In the present invention, a leveling agent is used to even the surface of the antistatic layer. The leveling agent can be used by mixing a ketone or an ester solvent with 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, more preferably 0.5% to 2% by weight based on 100% by weight of the antistatic coating composition. If the leveling agent is less than 0.1% by weight, it is difficult to expect the leveling effect, and when it is greater than 3% by weight, the surface hardness of the antistatic layer according to the present invention may be weakened.

In addition, when the fluorine-based resin and the silicone-based resin are used together, the content of the leveling agent is only 70% to 80% of the leveling agent content when using the fluorine-based resin. This is because the silicone resin itself acts as a leveling agent.

⑤ UV absorber

In the present invention, when using the photocurable resin for ultraviolet curing, it is preferable to use an ultraviolet absorber to prevent degradation caused during photocuring and to improve the durability of the antistatic 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-methoxybenzophenone, 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 10 wt%, more preferably 0.5 wt% to 5 wt%, in 100 wt% of the antistatic coating composition.

When the content of the ultraviolet absorber is 0.1% by weight or less, the effect of adding the ultraviolet absorber may not be realized properly, and when the content of the ultraviolet absorber is 10% by weight or more, the properties of the antistatic layer may be affected.

⑥ Dispersant

In the present invention, a dispersant is used to apply the antistatic layer on the transparent support. In the present invention, it is preferable to use an organic solvent in which the antistatic coating composition can be evenly dispersed.

An organic solvent is used in consideration of the coating property of the antistatic layer, the adhesion to the transparent support, and the improvement of the antistatic 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 30 parts by weight to 150 parts by weight, more preferably 50 parts by weight to 80 parts by weight based on 100 parts by weight of the antistatic coating composition to be applied. When the content of the organic solvent is less than 30 parts by weight with respect to 100 parts by weight of the antistatic coating composition, the viscosity is low, resulting in poor applicability, adhesion, etc. with the transparent support. By using an organic solvent, profitability is inferior.

2) drying step

The antistatic layer formed through the process of step 1) is subjected to a drying process.

This is performed to remove the solvent contained on the transparent support in the antistatic layer coating step. The drying temperature is preferably carried out at 20 ℃ to 75 ℃. More preferably, it is 25 degreeC-45 degreeC. If the temperature is 20 ℃ or less there is a problem that the drying is not made properly and the drying time is long. In addition, when the drying temperature is 75 ℃ or more, there is a possibility that the physical properties are changed, and further increase in temperature is less economical.

In addition, the drying time is preferably about 45 seconds to about 70 seconds. More preferably 55 to 65 seconds, still more preferably 58 to 62 seconds. If the drying time is less than 45 seconds, the effect of drying does not appear properly, and drying for more than 70 seconds may affect the physical properties.

3) curing step

In the curing step, the antistatic layer formed through the antistatic layer coating step and the drying step is cured. When the base resin is composed of only the thermosetting resin in the antistatic coating composition, only the thermosetting is performed, and when the thermosetting resin and the photocurable resin are used together, it is preferable to perform the photocuring after the thermosetting first. Photocuring is preferably UV curing. If necessary, when the curable resin is composed of only photocurable resins, only photocuring can be performed.

1) In case of using thermosetting resin and photosetting resin together

When the antistatic coating composition consists of a thermosetting resin and a photocurable resin, a thermosetting process is first performed. The temperature condition of the thermosetting step is preferably in the range of 40 ° C to 80 ° C, more preferably 50 ° C to 70 ° C. If the thermal curing temperature is less than 40 ℃ is not enough to heat the curing, greater than 80 ℃ may affect the properties of the antistatic coating composition.

The heat curing time is preferably 10 seconds to 5 minutes, more preferably 1 minute to 3 minutes. The thermosetting time can be changed corresponding to the thermosetting temperature conditions. If the thermal curing time is less than 10 seconds, even if the thermal curing temperature is high, it is difficult to secure a sufficient thermal curing effect, and if the thermal curing time exceeds 5 minutes, productivity may decrease and may affect physical properties.

The photocuring process is performed after the thermosetting process. 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 larger than 40mJ, excessive UV curing may affect the physical properties of the dye.

2) When only thermosetting resin is used

When the base resin is made of only the thermosetting resin, the thermosetting temperature proceeds to a higher temperature than when using the photosetting resin together. At this time, it is preferable that temperature conditions are 70 degreeC-140 degreeC, More preferably, it is 80 degreeC-120 degreeC.

If the thermosetting temperature is less than 70 ℃ does not sufficiently cure the thermosetting resin, if it is greater than 140 ℃ may affect the properties and durability of the antistatic coating composition.

When only the thermosetting resin is used as the curable resin, the curing time is preferably longer than when using the photocurable resin together. The curing time is preferably 30 seconds to 15 minutes, more preferably 1 minute to 10 minutes.

The curing time is determined in correspondence with the curing temperature. When using only a thermosetting resin, if the curing time is shorter than 30 seconds, sufficient thermosetting effect cannot be obtained. If the curing time is longer than 15 minutes, the thermosetting resin can be sufficiently cured. You can drop protection.

The antistatic layer formed through the above process preferably has a thickness of 1 μm to 3 μm. More preferably, they are 1.5 micrometers-2 micrometers. This is because if the thickness is less than 1 μm, it is difficult to perform the antistatic function, and if the thickness is larger than 3 μm, the thickness becomes thick.

(2) diffusion coating layer forming step

1) Diffusion coating layer coating step

The diffusion coating layer coating step is prepared in the form of a solution by mixing a diffusion coating composition consisting of a binder resin, a curing agent, a light diffusing fine particle, a leveling agent, and an ultraviolet absorber (used when using a photocurable resin as a binder resin) with a dispersant. Thereafter, the antistatic layer is formed by performing a coating using a spin coating method on the coated polarizing film.

The rotation speed and rotation time applied in the spin coating method of the present invention are as follows.

In the present invention, it is preferable to coat a solution obtained by mixing the diffusion coating composition with the dispersant at a rotational speed of 50 rpm to 5,000 rpm, more preferably 100 rpm to 4,000 rpm. Even more preferred spin speeds range from 500 rpm to 3,000 rpm.

If the rotational speed of the spin coating is less than 50 rpm, the desired predetermined thin film may not be obtained and the diffusion coating layer may not be evenly applied to the surface of the antistatic layer. In addition, if greater than 5,000rpm due to the high centrifugal force difference in thickness in the center and the outer portion of the antistatic layer occurs. In addition, in order to maintain a high rotational speed can be difficult to spin coating apparatus and affect the durability of the polarizing film itself.

In addition, the spin time in the spin coating step of the present invention is preferably 10 seconds to 500 seconds, more preferably 30 seconds to 400 seconds. Even more preferably 60 to 300 seconds. The rotation time may vary depending on the viscosity of the solution in which the antistatic coating composition and the dispersant are mixed and the thickness of the antistatic layer to be coated.

If the rotation time is less than 10 seconds, it is difficult to ensure sufficient time to evenly apply the diffusion coating layer to the antistatic layer coated polarizing film, if greater than 500 seconds is less economical.

Looking at the composition of the dispersion coating coating composition consisting of the binder resin, the curing agent, the light diffusing fine particles, the leveling agent, the ultraviolet absorber used in the present invention and the dispersant mixed with the composition are as follows.

① Binder Resin

The binder resin used in the present invention uses a resin having good adhesion to the antistatic layer and good compatibility with the light diffusing fine particles, which serve as light diffusion, as the binder resin.

Examples include unsaturated polyesters, methyl methacrylate, ethyl methacrylate, isobutyl methacrylate, normal butyl methacrylate, normal butyl methyl methacrylate, acrylic acid, methacrylic acid, hydroxyethyl methacrylate, hydride Hydroxypropyl methacrylate, hydroxy ethyl acrylate, acrylamide, metyrol acrylamide, glycidyl methacrylate, ethyl acrylate, isobutyl acrylate, normal butyl acrylate, 2-ethylhexyl acrylate polymer or air There are photo-curable resins such as acrylic or urethane-based copolymers such as copolymers or terpolymers, and thermosetting resins such as epoxy and melamine-based resins can be used, and in order to improve heat resistance, abrasion resistance, and adhesion, The film can be hardened and used. At this time, the resin used is preferably a high light transmittance, in particular, because it constitutes a diffusion coating layer, the adhesion to the antistatic layer is important.

② hardener

The curing agent in the present invention can be selected and mixed as appropriate depending on the form of the functional group present in the thermosetting resin or photocurable resin, preferably isocyanate compound, epoxy compound, aziridine compound, metal chelate compound, metal alkoxide Metal salts, amine compounds, hydrazine compounds and the like are used alone or in combination.

The isocyanate compound in the present invention is an aliphatic diisocyanate compound such as aromatic diisocyanate compound such as diphenylmethane isocyanate, xylene diisocyanate, and hexamethyl diisocyanate. ) May be 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 0.3% to 10% by weight relative to 100% by weight of the diffusion coating composition. In the present invention, the curing agent is an additive used to control the molecular weight or chain structure of the diffusion coating composition, the use of the curing agent in the above-described range is prominent in the effect of suppressing the phase separation phenomenon.

③ light diffusing fine particles

The light-diffusion fine particles in the present invention mainly use polymer beads. Examples thereof include organic transparent or white pigments such as acrylic resins, styrene resins, and epoxy resins.

In addition, when the acrylic polymer is the main component of the adhesive composition, polymer beads satisfying the refractive index and the degree of diffusion required for light diffusion are preferable. The polymer beads include melamine beads (refractive index: 1.57), acrylic beads (refractive index: 1.47), acrylic-styrene beads (refractive index: 1.54), polycarbonate beads, polyethylene beads, vinyl chloride beads, and the like.

In the present invention, acrylic beads, styrene beads or inorganic beads may be used alone or in combination.

Acrylic beads used in the present invention are ethyl acrylate, butyl acrylate, amyl acrylate, 2-ethylhexyl acrylate, octyl acrylate, cyclohexyl acrylate, benzyl acrylate, butyl methacrylate, 2-ethylhexyl meta Methacrylate, cyclohexyl methacrylate, benzyl hexyl methacrylate, cyclohexyl methacrylate, benzyl methacrylate, methyl acrylate, methyl methacrylate, benzyl methacrylate, vinyl acetate, styrene, acrylonitrile, Acrylic acid, methacrylic acid, maleic anhydride, itaconic acid, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, N-methylol acrylamide, acrylamide, methacrylamide, glycy Dilamide, lauryl acrylate, ethoxydiethylene glycol acrylate, methoxy triethylene glycol Colacrylate, phenoxyethyl acrylate, tetrahydrofuryl acrylate, isobornyl acrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxy-3-phenoxy acrylate, neo Pentyl glycol diacrylate, 1,6-hexanediol diacrylate, trimethylol propane triacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol hexaacrylate, trimethylolpropane acrylate 8, 2-ethylhexyl methacrylate, n-stearyl methacrylate, cyclohexyl methacrylate, tetrahydrofurfuryl methacrylate, 2-hydroxyethyl methacrylate, 2-hydroxybutyl methacrylate, 1,6-hexanediol dimethacrylate, trimethylolpropane trimethacrylate, glycerin dimethacrylate Agent, glycerin dimethacrylate acrylate hexamethylene diisocyanate, pentaerythritol triacrylate is preferably a monomer or oligomer of hexamethylene diisocyanate used alone or in combination.

In addition, the styrene beads used in the present invention may be used alone or in combination with styrene, α-methylstyrene, α-ethylstyrene, o-ethylstyrene, p-ethylstyrene, 2,4-dimethylstyrene or vinyl toluene. desirable.

The content of the light diffusing fine particles is preferably 1% by weight to 20% by weight with respect to 100% by weight of the diffusion coating composition, more preferably 2% by weight to 10% by weight. When the content of the light diffusing fine particles is less than 1% by weight, it is difficult to expect a light diffusing effect, and when the content of the light diffusing fine particles is greater than 20% by weight, the light diffusing fine particles may be excessively reduced to reduce the transmittance.

Through the light diffusing fine particles used in the present invention, a film having excellent dispersibility and uniformity and high light diffusivity can be obtained. In addition, the shape of the light diffusing fine particles is preferably spherical or acicular.

As for the particle diameter of light-diffusion microparticles | fine-particles, 0.3 micrometer-4 micrometers are preferable, More preferably, they are 0.5 micrometer-2 micrometers. Even more preferably 1 µm to 1.5 µm. If the particle diameter of the light-diffusion fine particles is smaller than 0.3 μm, it is difficult to obtain a satisfactory light-diffusion effect, and the light-diffusion is deteriorated and the image is discolored to aluminum color. In addition, when the particle diameter of the light-diffusion fine particles is larger than 4 µm, the background of the screen is rough and the image contrast is deteriorated.

In the present invention, the refractive index of the light diffusing fine particles preferably has a difference of 0.01 to 0.4 with respect to the refractive index of the diffusion coating composition. More preferable refractive index difference is 0.07-0.3. If the difference in refractive index is less than 0.01, light diffusion does not occur and if the difference in refractive index is greater than 0.4, the internal scattering may be excessively large and the total light transmittance may deteriorate. In addition, the refractive index of the light diffusing fine particles must be lower than the refractive index of the antistatic coating composition to easily adjust the refractive index and improve productivity.

④ Leveling agent

In the present invention, a leveling agent is used to even the surface of the diffusion coating layer. The leveling agent can be used by mixing a ketone or an ester solvent with 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, more preferably 0.5% to 2% by weight based on 100% by weight of the diffusion coating composition. If the leveling agent is less than 0.1% by weight, it is difficult to expect the leveling effect, and when the leveling agent is greater than 3% by weight, the surface hardness of the diffusion coating layer according to the present invention may be weakened.

In addition, when the fluorine-based resin and the silicone-based resin are used together, the content of the leveling agent is only 70% to 80% of the leveling agent content when using the fluorine-based resin. This is because the silicone resin itself acts as a leveling agent.

⑤ UV absorber

In the present invention, when using the photocurable resin for ultraviolet curing, it is preferable to use an ultraviolet absorber to prevent degradation caused during photocuring and to improve the durability of the antistatic 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-methoxybenzophenone, 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 Yl) 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.

The content of the ultraviolet absorbent in the present invention is preferably used in an amount of 0.1% to 10% by weight, more preferably 0.5% to 5% by weight in 100% by weight of the diffusion coating composition.

When the content of the UV absorber is 0.1% by weight or less, the effect of adding the UV absorber may not be realized properly, and when the content of the UV absorber is 10% by weight or more, the physical properties of the diffusion coating layer may be affected.

⑥ Dispersant

In the present invention, a dispersant is used to apply the diffusion coating layer on the antistatic layer. In the present invention, it is preferable to use an organic solvent in which the diffusion coating composition can be evenly dispersed.

An organic solvent is used in consideration of the coating property of the diffusion coating layer, the adhesion with the antistatic layer, the enhancement of the light diffusion function, and the like.

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 30 parts by weight to 150 parts by weight, and more preferably 50 parts by weight to 80 parts by weight, based on 100 parts by weight of the diffusion coating composition to be applied. When the content of the organic solvent is less than 30 parts by weight with respect to 100 parts by weight of the diffusion coating composition, the viscosity is low, resulting in poor applicability and adhesion to the antistatic layer. Profitability is inferior by using

2) drying step

The diffusion coating layer formed through the process of step 1) is subjected to a drying process.

This is carried out to remove the solvent contained on the antistatic layer in the coating step of the diffusion coating layer. The drying temperature is preferably carried out at 20 ℃ to 75 ℃. More preferably, it is 25 degreeC-45 degreeC. If the temperature is 20 ℃ or less there is a problem that the drying is not made properly and the drying time is long. In addition, when the drying temperature is 75 ℃ or more, there is a possibility that the physical properties are changed, and further increase in temperature is less economical.

In addition, the drying time is preferably about 45 seconds to about 70 seconds. More preferably 55 to 65 seconds, still more preferably 58 to 62 seconds. If the drying time is less than 45 seconds, the effect of drying does not appear properly, and drying for more than 70 seconds may affect the physical properties.

3) curing step

The curing step according to the present invention uses a curing method commonly used.

In the diffusion coating composition according to the present invention, since the thermosetting resin or the photocurable resin is included, the curing step is performed by thermosetting or UV curing. Thermal curing and UV curing may proceed sequentially or simultaneously. In addition, the curable resin and the curing agent may vary according to the difference in the curing method, the range is not limited to the curable resin and the curing agent specifically mentioned in the present invention.

The diffusion coating layer formed through the above process preferably has a thickness of 3 μm to 5 μm. If the thickness is smaller than 3 μm, it is difficult to exhibit the optical acid function. If the thickness is larger than 5 μm, the thickness becomes thick.

An antistatic diffusion optical device manufactured through the above steps (antistatic layer forming step, diffusion coating layer forming step) is as shown in FIG. 1.

As shown, the antistatic diffusion optical device according to the present invention performs an antistatic function on the polarizing film 300 in a state in which the polarizing film 300 is attached to the LCD cell 100 by the adhesive 200. An antistatic layer 400 is coated, and a diffusion coating layer 500 that performs a light diffusion function on the antistatic layer 400 is coated and laminated.

Meanwhile, the antistatic diffusion optical device may form a diffusion coating layer on the polarizing film using a spin coating method, and then form an antistatic layer on the diffusion coating layer using a spin coating method. That is, even if the order of forming the antistatic layer and the diffusion coating layer is reversed, the function to perform the same.

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

Example 1

<Antistatic layer forming step>

After manufacturing a polarizing film in a conventional method, cut to 500mm horizontally and vertically, and then attach the polarizing film to the LCD cell using a pressure-sensitive adhesive in a continuous rotary coating machine. 10% by weight of polyacetylene, 3% by weight of curing agent, 1% by weight of leveling agent, and an antistatic coating composition comprising phenolic resin as a curable resin on xylene in the form of a solution on the transparent support surface of the polarizing film After the manufacture of the coating by spin coating method. At this time, the rotation speed was set to 1000 rpm, and the rotation time was performed for 20 seconds. In addition, the weight of xylene was mixed in a ratio of 80 parts by weight relative to 100 parts by weight of the antistatic coating composition. After coating the antistatic layer, the drying process was carried out for 60 seconds at a drying temperature at room temperature, and thermoset at 70 ℃ for 1 minute to form an antistatic layer having a thickness of 1㎛.

<Diffusion coating layer forming step>

4% by weight of curing agent, 2.5% by weight of acrylic beads, 1.5% by weight of leveling agent, 5% by weight of ultraviolet absorber mixed with phenyl salicylate and p-tert-butylphenyl salicylate, and methyl methacrylate resin as binder resin After dissolving a diffusion coating composition comprising a in xylene was prepared in the form of a solution, the coating on the antistatic layer coated optical element in a continuous rotary coating machine, dried, UV cured to obtain a diffusion coating layer of 5㎛ thickness. Rotational speed and rotation time were the same as the antistatic layer forming step. The drying process was carried out for 60 seconds at room temperature drying, the curing was performed for 2 minutes UV curing with energy of 15mJ.

Example 2

An antistatic diffusion optical device was manufactured in the same manner as in Example 1, except that 5 wt% of the acrylic beads was used in the diffusion coating layer formation step.

Example 3

An antistatic diffusion optical device was manufactured in the same manner as in Example 1, except that 10 wt% of the acrylic beads was used in the diffusion coating layer formation step.

Example 4

<Antistatic layer forming step>

After manufacturing a polarizing film in a conventional method, cut to 500mm horizontally and vertically, and then attach the polarizing film to the LCD cell using a pressure-sensitive adhesive in a continuous rotary coating machine. 10% by weight of polyacetylene, 3% by weight of curing agent, 1% by weight of leveling agent, and an antistatic coating composition comprising phenolic resin as a curable resin on xylene in the form of a solution on the transparent support surface of the polarizing film After the manufacture of the coating by spin coating method. At this time, the rotation speed was set to 500 rpm, and the rotation time was performed for 20 seconds. In addition, the weight of xylene was mixed in a ratio of 80 parts by weight relative to 100 parts by weight of the antistatic coating composition. After coating the antistatic layer, the drying process was carried out for 60 seconds at a drying temperature at room temperature, and thermoset at 80 ℃ for 1 minute to form an antistatic layer having a thickness of 2㎛.

<Diffusion coating layer forming step>

4% by weight of curing agent, 2.5% by weight of acrylic beads, 1.5% by weight of leveling agent, 5% by weight of ultraviolet absorber mixed with phenyl salicylate and p-tert-butylphenyl salicylate, and methyl methacrylate resin as binder resin After dissolving a diffusion coating composition comprising a xylene in the form of a solution, and then coated on a continuous rotary coating machine on an antistatic layer is coated, dried, UV cured to obtain a diffusion coating layer of 5㎛ thickness. Rotational speed and rotation time were the same as the antistatic layer forming step. The drying process was carried out for 60 seconds at room temperature drying, the curing was performed for 2 minutes UV curing with energy of 15mJ.

Example 5

An antistatic diffusion optical device was manufactured in the same manner as in Example 4, except that 5 wt% of the acrylic beads was used in the diffusion coating layer formation step.

Example 6

An antistatic diffusion optical device was manufactured in the same manner as in Example 4, except that 10 wt% of the acrylic beads was used in the diffusion coating layer formation step.

Comparative Example 1

An optical device was manufactured using a Dinipon Paint 'ASAGSR2' film, which improved physical properties of high resolution display quality compared to silica particles.

Table 1 shows the results of measuring optical transmittance, haze, transparency, adhesion, and surface resistance of the antistatic diffusion optical devices obtained in Examples and Comparative Examples.

Permeability (%) Haze (%) Transparency (%) Adhesive Surface resistance (Ω / ㎠) Example 1 30.30 34 93.8 100/100 1.14 * e09 Example 2 16.80 66.1 84.1 100/100 1.18 * e09 Example 3 5.94 91.4 60.4 100/100 1.49 * e09 Example 4 27.70 36.3 93 100/100 3.69 * e08 Example 5 15.46 67.3 84.1 100/100 3.19 * e08 Example 6 5.98 90.8 61.5 100/100 2.42 * e08 Comparative Example 1 26.87 41.6 62.0 100/100 3.26 * e09

As shown in Table 1, the transmittances of Example 1, Example 4, and Comparative Example 1 shows a similar transmittance. This is because the amount of acrylic beads mixed in the diffusion barrier layer is similar. In addition, the transmittance of Examples 2 and 3 is lower than that of Example 1 because the amount of acrylic beads mixed in the diffusion barrier layer is increased. Moreover, the reason why Example 5 and Example 6 fall compared with Example 4 is also the same.

In addition, as described in Table 1 above, permeability and haze value are determined according to the amount of acrylic beads. In other words, the greater the amount of acrylic beads, the lower the transparency and the higher the haze value.

In addition, Example 1 to Example 6 to which the antistatic function is added has a lower surface resistance than Comparative Example 1.

In other words, the transmittance, haze, and transparency are related to the amount of acrylic beads contained in the diffusion coating layer, and the surface resistance is related to the antistatic layer.

2 to 4 show graphs of transmittance according to wavelengths of the optical elements obtained in Examples 1 to 6 and the optical elements obtained in Comparative Example 1. FIG. As shown in Table 1, the graph shown in FIGS. 2 to 4 also shows a tendency that the transmittance decreases as the amount of acrylic beads increases.

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.

As described above, the method for manufacturing an antistatic diffusion optical device according to the present invention and the antistatic diffusion optical device using the same form an antistatic layer using a spin coating method on an optical device with a polarizing film, and the antistatic layer thereof By forming a diffusion coating layer thereon, there is an advantage in that a clear image can be realized while preventing static electricity.

In addition, by forming the antistatic layer and the diffusion coating layer as a single optical element, there is an advantage that the optical element of the thin film can be implemented.

Claims (19)

(a) 100% by weight of an antistatic coating composition comprising a curable resin, an antistatic agent, a curing agent, and a leveling agent under rotation conditions of a rotation speed of 50 rpm to 5,000 rpm and a rotation time of 10 seconds to 500 seconds, Iii) 0.5 wt% to 30 wt% of the antistatic agent Ii) 0.5% to 15% by weight of the curing agent Iii) The leveling agent is coated by using a spin coating method on the polarizing film attached to the LCD cell by dissolving the antistatic coating composition comprising 0.1% by weight to 3% by weight with a dispersant, the content of the dispersant An antistatic layer forming step of mixing the antistatic layer by mixing in an amount of 30 parts by weight to 150 parts by weight with respect to 100 parts by weight of the silver antistatic coating composition to form an antistatic layer by drying and curing; (b) 100% by weight of the diffusion coating composition comprising a binder resin, a curing agent, a light diffusing fine particle, and a leveling agent under rotation conditions of a rotational speed of 50 rpm to 5,000 rpm and a rotation time of 10 seconds to 500 seconds. Iii) 0.3 wt% to 10 wt% of the curing agent Ii) 1% to 20% by weight of the light diffusing fine particles Iii) the leveling agent is coated by using a spin coating method on the antistatic layer by dissolving the diffusion coating composition comprising 0.1% by weight to 3% by weight with a dispersant, the content of the dispersant is an antistatic coating composition A method for manufacturing an antistatic diffusion optical device, characterized in that it comprises a diffusion coating layer forming step of mixing in a ratio of 30 parts by weight to 150 parts by weight with respect to 100 parts by weight to coat the diffusion coating layer, drying, curing to form a diffusion coating layer. . (a) 100% by weight of the diffusion coating composition comprising a binder resin, a curing agent, a light diffusing fine particle, and a leveling agent under rotational conditions of 50 to 5,000 rpm and a rotation time of 10 to 500 seconds. Iii) 0.3 wt% to 10 wt% of the curing agent Ii) 1% to 20% by weight of the light diffusing fine particles Iii) The leveling agent is coated by using a spin coating method on the polarizing film attached to the LCD cell by dissolving the diffusion coating composition comprising 0.1% to 3% by weight with a dispersant, the content of the dispersant is A diffusion coating layer forming step of mixing a diffusion coating layer by mixing in a ratio of 30 parts by weight to 150 parts by weight with respect to 100 parts by weight of an antistatic coating composition to form a diffusion coating layer; (b) 100% by weight of an antistatic hard coating layer composition comprising a curable resin, an antistatic agent, a curing agent, and a leveling agent under rotation conditions of a rotational speed of 50 rpm to 5,000 rpm and a rotation time of 10 seconds to 500 seconds. , Iii) 0.5 wt% to 30 wt% of the antistatic agent Ii) 0.5% to 15% by weight of the curing agent Iii) the leveling agent is coated with a solution of the antistatic coating composition comprising 0.1% by weight to 3% by weight with a dispersant by spin coating method on the diffusion coating layer, the content of the dispersant is antistatic coating Method for producing an antistatic diffusion optical device, characterized in that it comprises a step of forming an antistatic layer by mixing in a ratio of 30 parts by weight to 150 parts by weight with respect to 100 parts by weight of the composition to coat the antistatic layer, dried, and cured to form an antistatic layer . The method according to claim 1 or 2, The curable resin or the binder resin is a method of manufacturing an antistatic diffusion optical device, characterized in that at least one of a thermosetting resin or a photocurable resin. The method of claim 3, wherein When the photocurable resin is included in the curable resin or the binder resin, the antistatic coating composition or the diffusion coating composition further includes an ultraviolet absorber, and the content of the ultraviolet absorbent is the antistatic coating composition or the diffusion coating composition 100 Method for producing an antistatic diffusion optical device, characterized in that in the weight%, 0.1% to 10% by weight. The method of claim 3, wherein In the antistatic layer forming step, the antistatic agent is a method of manufacturing an antistatic diffusion optical element, characterized in that at least one of a conductive polymer, a metal particle is mixed. The method of claim 5, The conductive polymer is polyacetylene, poly (p-phenylene) [Poly (p-phenylene)], polythiophene, poly (3,4-ethylenedioxythiophene) [Poly (3,4 -ethylenedioxythiophene) (PEDOT)], polypyrrole [pyridine polymer], poly (p-phenylene sulfide) [poly (p-phenylene sulfide)], poly (p-phenylene vinylene) [Poly (p-phenylene vinylene)], poly (thienylene vinylene), and polyaniline (Polyaniline). The method of claim 5, The metal particles are silver (Ag), gold (Au), copper (Cu), aluminum (Al), platinum (Pt), nickel (Ni), chromium (Cr), lead (Pb), cobalt (Co), rhodium (Rh), ruthenium (Ru), tin (Sn), iridium (Ir), palladium (Pd), titanium (Ti) at least one of the manufacturing method of the antistatic diffusion optical device. The method of claim 7, wherein The metal compound has a particle diameter of 0.05㎛ to 1㎛ manufacturing method of the antistatic diffusion optical device. The method of claim 3, wherein Method for producing an antistatic diffusion optical device, characterized in that the antistatic layer thickness is made to 1㎛ to 3㎛. The method of claim 3, wherein The light diffusing fine particles are at least one of acrylic beads and styrene beads, the manufacturing method of the antistatic diffusion optical device. The method of claim 10, The acrylic beads are ethyl acrylate, butyl acrylate, amyl acrylate, 2-ethylhexyl acrylate, octyl acrylate, cyclohexyl acrylate, benzyl acrylate, butyl methacrylate, 2-ethylhexyl methacrylate, cyclo Hexyl methacrylate, benzyl hexyl methacrylate, cyclohexyl methacrylate, benzyl methacrylate, methyl acrylate, methyl methacrylate, benzyl methacrylate, vinyl acetate, styrene, acrylonitrile, acrylic acid, methacrylic acid , Maleic anhydride, itaconic acid, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, N-methylol acrylamide, acrylamide, methacrylamide, glycidylamide, lauryl Acrylate, ethoxydiethylene glycol acrylate, methoxy triethylene glycol acrylate, Oxyethyl acrylate, tetrahydrofuryl acrylate, isobornyl acrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxy-3-phenoxy acrylate, neopentyl glycol diacryl Rate, 1,6-hexanediol diacrylate, trimethylolpropane triacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol hexaacrylate, trimethylolpropane acrylate benzoate, 2- Ethylhexyl methacrylate, n-stearyl methacrylate, cyclohexyl methacrylate, tetrahydrofurfuryl methacrylate, 2-hydroxyethyl methacrylate, 2-hydroxybutyl methacrylate, 1,6- Hexanediol dimethacrylate, trimethylolpropane trimethacrylate, glycerin dimethacrylate, glycerin di The method of other acrylate hexamethylene diisocyanate, pentaerythritol triacrylate hexamethylene diisocyanate monomer or antistatic diffusion optical element characterized in that the oligomer used alone or in combination. The method of claim 10, The styrene beads are antistatic diffusion, characterized in that used alone or in combination with styrene, α-methylstyrene, α-ethylstyrene, o-ethylstyrene, p-ethylstyrene, 2,4-dimethylstyrene or vinyl toluene Method of manufacturing optical element. The method of claim 3, wherein The shape of the light diffusing fine particles is a spherical or needle-like manufacturing method of the antistatic diffusion optical element. The method of claim 3, wherein The light diffusing fine particles have a particle diameter of 0.3㎛ to 4㎛ manufacturing method of the antistatic diffusion optical device. The method of claim 3, wherein The light diffusing fine particles have a refractive index of 0.01 to 0.4 less than the refractive index of the antistatic coating composition, characterized in that the manufacturing method of the antistatic diffusion optical device. The method of claim 3, wherein The diffusion coating layer is a method of manufacturing an antistatic diffusion optical device, characterized in that the thickness of 3㎛ 5㎛. The method of claim 3, wherein The dispersant is a saturated hydrocarbon alcohol having 1 to 8 carbon atoms, such as methanol, isopropanol, butanol, t-butanol, and isobutanol, and a saturated hydrocarbon having 1 to 8 carbon atoms such as acetone, methyl ethyl ketone, and methyl isobutyl ketone. Saturated hydrocarbon-based diketones having 1 to 8 carbon atoms such as hydrocarbon ketones and acetyl acetone, saturated hydrocarbon-based esters having 1 to 8 carbon atoms such as ethyl acetate and butyl acetate of esters, ethyl cellosolves of ether alcohols, and methylcello Sorb, butyl cellosolve, 1-methoxy-2-propanol, and at least one of N-methyl pyrrolidone, ethyl cellosolve acetate, diacetone alcohol, benzene, toluene, xylene, ethylbenzene A method of manufacturing an antistatic diffusion optical device, characterized in that. The method of claim 4, wherein 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-cya A method for manufacturing an antistatic diffusion optical device, characterized in that at least one of no-3,3'-diphenyl acrylate. An antistatic diffusion optical device manufactured by the method of manufacturing an antistatic diffusion optical device according to any one of claims 4 to 18.

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