KR20130010386A - Anti static hard coating composition, film anti static hard coating film, polarizing plate and display device including the same - Google Patents

Abstract

PURPOSE: An antistatic hardcoating composition is provided to obtain excellent antistatic performance even by using a small amount of metal oxides, especially ATO or ITO and to improve transmittance by using a small amount of metal oxides. CONSTITUTION: An antistatic hardcoating composition comprises a conductive metal compound, a carbonyl group-containing organic solvent, a (meth)acrylate monomer, and a photo initiator. The comprised amount of the conductive metal compound is 0.5-5 parts by weight based on 100.0 parts by weight of the antistatic hard coating composition. An antistatic hardcoating film comprises an antistatic hard coating layer. The antistatic hardcoating layer is formed by spreading the antistatic hardcoating composition on one side or both sides, drying the composition, localizing the conductive metal compound on the surface, and hardening the result.

Description

Antistatic hard coating composition, antistatic hard coating film, polarizing plate and display device including same {Anti Static Hard Coating Composition, Film Anti Static Hard Coating Film, Polarizing Plate and Display Device Including the Same}

The present invention relates to an antistatic hard coating composition, an antistatic hard coating film, a polarizing plate and a display device including the same.

In general, a hard coating layer having a hard coating layer having excellent anti-scratch on a base film as a surface protective material is used for display devices such as a cathode ray tube (CRT), a liquid crystal display (LCD), and a plasma display panel (PDP). Film is used. However, the conventional hard coating film has a disadvantage that it is easy to adhere to the surface dust and the like because of the high surface resistance.

Accordingly, an antistatic hard coating film having imparted antistatic property to a hard coating layer is used. In order to impart antistatic property to the hard coating layer, an antistatic agent is generally added, or an antistatic layer may be separately formed.

Recently, an antistatic hard coating composition using a metal oxide-based conductive sol such as antimontinoxide (ATO) or indiumtinoxide (ITO) has been developed. However, when sol of metal oxide particles such as ATO or ITO is used, it is difficult to manufacture an antistatic film using the sol because the influence of the transmittance and the antistatic performance is large depending on the dispersion and the amount of the coating solution, and in particular, the antistatic In order to obtain the property, an excessive amount of ATO or ITO must be used, and thus a transmittance is lowered.

The present invention is to solve the above problems, it is possible to obtain a good antistatic performance while using a small amount of metal oxide, in particular ATO or ITO, it is possible to improve the transmittance by using a small amount of metal oxide Its purpose is to provide an antistatic hard coating composition.

Another object of the present invention is to provide an antistatic hard coating film having excellent antistatic performance and transmittance.

Another object of the present invention is to provide a polarizing plate and a display device having excellent antistatic performance.

In order to achieve the above object, the present invention comprises an electroconductive metal compound (A), a carbonyl group-containing organic solvent (B), a (meth) acrylate monomer (C) and a photoinitiator (D). It provides a coating composition.

The conductive metal compound may be included in an amount of 0.5 to 5 parts by weight based on 100 parts by weight of the total antistatic hard coating composition.

The conductive metal compound preferably has an average particle diameter of 1 to 120 nm.

The carbonyl group-containing organic solvent may be included in an amount of 10 to 50 parts by weight based on 100 parts by weight of the total antistatic hard coating composition.

In order to achieve the other object of the present invention, the present invention is applied to the antistatic hard coating composition according to the present invention on one side or both sides of the substrate and then dried to localize the conductive metal compound on the surface and then cured It provides an antistatic hard coating film comprising a hard coating layer.

The coating thickness of the antistatic hard coating composition is preferably 3 to 20㎛ based on the dry coating film.

When coating the antistatic hard coating composition, the humidity is preferably 40 to 60%.

In order to achieve another object of the present invention, the present invention provides a polarizing plate, characterized in that the antistatic hard coating film is provided.

In order to achieve another object of the present invention, the present invention provides a display device characterized in that the antistatic hard coating film is provided.

The antistatic hard coating composition according to the present invention includes a small amount of a metal oxide, in particular, a carbonyl group-containing organic solvent together with ATO or ITO, so that the metal oxide is localized on the surface when dried to obtain excellent antistatic performance. It is possible to improve the transmittance by using a small amount of ATO or ITO. An antistatic hard coating film prepared using the antistatic hard coating composition exhibits excellent antistatic properties and excellent transmittance. Therefore, the antistatic hard coating film may be usefully used in polarizing plates and display devices.

1 to 3 are photographs showing cross-sections of the antistatic hard coating film prepared in Example 1, Example 7, and Comparative Example 1, respectively.

Hereinafter, the present invention will be described in detail.

The antistatic hard coating composition according to the present invention comprises a conductive metal compound (A), a carbonyl group-containing organic solvent (B), a (meth) acrylate monomer (C) and a photoinitiator (D). Each component is described in detail as follows.

Conductive Metal Oxide (A)

The conductive metal oxide may be applied without limitation to those generally used as antistatic agents in the art.

For example, the conductive metal oxide may be preferably an oxide of a metal selected from Ti, Zr, In, Zn, Sn, Sb, and Al.

In view of conductivity, the conductive metal oxide may preferably include an oxide of at least one metal of Sb, In, and Sn. More preferably, the conductive metal oxide may be ATO or ITO.

1-120 nm is preferable, as for the average particle diameter of the said conductive metal oxide, 1-60 nm is more preferable, 2-40 nm is still more preferable. When the average particle diameter of the conductive metal oxide has the above range, it is preferable because it reduces haze and excellent dispersion stability, and can be easily localized at the time of volatilization of the solvent during the drying process.

The conductive metal oxide may be prepared by physical surface treatment such as plasma discharge treatment and corona discharge treatment, or surfactant, to stabilize dispersion in dispersion or coating solution or to improve affinity or binding with (meth) acrylate monomer, Chemical surface treatment by a coupling agent etc. can also be performed. As for the said conductive metal oxide, it is especially preferable to surface-treat using a coupling agent. As said coupling agent, it is preferable to use an alkoxy metal compound (for example, a titanium coupling agent and a silane coupling agent). In particular, the treatment with a silane coupling agent having an acryloyl or methacryloyl group is effective.

The conductive metal oxide is preferably contained 0.5 to 5 parts by weight based on 100 parts by weight of the total antistatic hard coating composition. When the content of the conductive metal oxide is less than 0.5 parts by weight based on the above, it is difficult to express sufficient antistatic performance, when the content of more than 5 parts by weight is excellent in the antistatic performance, but there is a disadvantage that a decrease in transmittance occurs.

Carbonyl group-containing organic solvent (B)

The carbonyl group-containing organic solvent serves to help the conductive metal compound be localized on the surface when volatilized.

The carbonyl group-containing organic solvent may specifically include ketones such as methyl ethyl ketone, methyl butyl ketone, methyl isobutyl ketone, diethyl ketone, dipropyl ketone, and cyclohexanone; Ester, such as ethyl acetate, butyl acetate, (gamma) -butyrolactone, can be illustrated. These can be used individually or in combination of 2 or more, respectively.

In addition, the carbonyl group-containing organic solvent may be an alcohol solvent (methanol, ethanol, isopropanol, butanol, methyl cellulsolve, ethyl cellosolve, etc.), a hexane solvent (hexane, heptane, octane, etc.) and a benzene solvent (benzene, Toluene, xylene, etc.) can be mixed and used.

The carbonyl group-containing organic solvent is preferably contained 10 to 50 parts by weight based on 100 parts by weight of the total antistatic hard coating composition. When the content of the carbonyl group-containing organic solvent is less than 10 parts by weight based on the above standard, the conductive metal oxide does not proceed to localization to the surface during the drying process, and thus it is difficult to exhibit sufficient antistatic performance. There is a problem in that the surface ubiquitous is severely raised and irregularities are formed on the surface to increase the haze.

( Meta ) Acrylate Monomer (C)

The (meth) acrylate monomer is included to improve the hardness of the coating layer.

The (meth) acrylate monomer may be any of those generally used in the art.

Specific examples of the (meth) acrylate monomers include dipentaerythritol hexa (meth) acrylate, dipentaerythritol penta (meth) acrylate, pentaerythritol tetra (meth) acrylate, ditrimethylolpropane tetra (meth) acrylate, (Meth) acrylic ester, trimethylolpropane tri (meth) acrylate, glycerol tri (meth) acrylate, tris (2-hydroxyethyl) isocyanurate tri (meth) acrylate, ethylene glycol di (meth) Acrylate, propylene glycol (meth) acrylate, 1,3-butanedioldi (meth) acrylate, 1,4-butanedioldi (meth) acrylate, 1,6-hexanedioldi (meth) acrylate, neopentyl Glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, dipropylene glycol di (meth) acrylate, bis (2-hydride) Isocyanurate di (meth) acrylate, hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, hydroxybutyl (meth) acrylate, isooctyl (meth) acrylate, iso At least 1 selected from the group consisting of dexyl (meth) acrylate, stearyl (meth) acrylate, tetrahydroperfuryl (meth) acrylate, phenoxyethyl (meth) acrylate, isobornol (meth) acrylate, and the like Species can be used.

The amount of the (meth) acrylate monomer is not limited, but preferably 0.1 to 50 parts by weight based on 100 parts by weight of the total antistatic hard coating composition. If the content of the (meth) acrylate monomer is less than 0.1 parts by weight based on the above standards, there is a problem in the surface hardening of the coating layer, and if it exceeds 50 parts by weight, the coating property decreases due to the increase in viscosity and the formation of uniform irregularities may be reduced. have.

Photoinitiator (D)

The photoinitiator can be used without limitation as long as it is used in the art. Preferably, the photoinitiator may be at least one selected from the group consisting of hydroxy ketones, aminoketones, and hydrogen recyclable photoinitiators.

Specific examples of the photoinitiator include 2-methyl-1- [4- (methylthio) phenyl] 2-morpholinepropanone-1, diphenylketone benzyldimethyl ketal, 2-hydroxy-2-methyl-1- Phenyl-1-one, 4-hydroxycyclophenylketone, dimethoxy-2-phenylatetophenone, anthraquinone, fluorene, triphenylamine, carbazole, 3-methylacetophenone, 4-knoloacetophenone, At least one selected from the group consisting of 4,4-dimethoxyacetophenone, 4,4-diaminobenzophenone, 1-hydroxycyclohexylphenyl ketone, benzophenone, and the like can be used.

The photoinitiator is preferably contained 0.05 to 5 parts by weight based on 100 parts by weight of the total antistatic hard coating composition. When the content of the photoinitiator is less than 0.05 part by weight based on the above standard, if the curing rate of the antistatic hard coating composition is slow and exceeds 5 parts by weight, cracking may occur in the antistatic hard coating layer due to over curing.

In addition to the above components, the antistatic hard coating composition of the present invention may further include at least one selected from the group consisting of antioxidants, UV absorbers, light stabilizers, leveling agents, surfactants, and antifouling agents as necessary.

The antistatic hard coating film according to the present invention includes an antistatic hard coating layer formed using the antistatic hard coating composition according to the present invention. That is, the antistatic hard coating film according to the present invention is applied to the antistatic hard coating composition according to the present invention on one side or both sides of the substrate and then dried to localize the conductive metal compound on the surface and then cured And a hard coat layer.

The substrate is preferably a transparent film, and for example, cycloolefin derivatives having a unit of a monomer containing a cycloolefin such as norbornene or a polycyclic norbornene monomer, diacetyl cellulose, triacetyl cellulose, acetyl cellulose butyl Cellulose, ethylene-vinyl acetate copolymer, polyester, polystyrene, polyamide, polyetherimide, polyacrylic, polyimide, polyethersulfone, selected from latex, propionyl cellulose, butyryl cellulose, acetyl propionyl cellulose, etc. Polysulfone, polyethylene, polypropylene, polymethylpentene, polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, polyvinyl acetal, polyether ketone, polyether ether ketone, polyether sulfone, polymethyl methacrylate, polyethylene tere Phthalate, polybutylene terephthalate , It is possible to use one selected from polyethylene naphthalate, polycarbonate, polyurethane, it may be used an undrawn, uniaxially or biaxially stretched film. Among them, preferably, a monoaxial or biaxially stretched polyester film having excellent transparency and heat resistance, but a triacetyl cellulose film is suitably used in view of transparency and optical anisotropy.

Although the thickness of the said base material is not restrict | limited, 8-1000 micrometers is preferable, More preferably, it is 40-100 micrometers.

The method of applying the antistatic hard coating composition to the substrate may be a method generally used in the art, for example, selected from die coater, air knife, reverse roll, spray, blade, casting, gravure and spin coating, etc. It may be carried out in a suitable manner.

The coating thickness of the antistatic hard coating composition is not necessarily limited, but is preferably 3 to 20 μm based on the dry coating film. If the coating thickness is less than 3um based on the dry film thickness, there is a disadvantage in that sufficient pencil hardness is not formed. If the coating thickness is more than 20um, the curl has a disadvantage of poor processability. After applying the antistatic hard coating composition, the volatiles are dried by evaporation at a temperature of 30 to 150 ° C. for 1 second to 30 minutes, preferably 10 seconds to 10 minutes. When the carbonyl group-containing organic solvent is volatilized during the drying process, the conductive metal oxide is localized on the surface. The conductive metal oxide is localized within the range of 200 to 500 nm in the vertical direction of the coating surface, showing excellent antistatic performance and transmittance.

At this time, the humidity during the coating of the antistatic hard coating composition is preferably maintained at 40 to 60%. If the humidity is less than 40%, the antistatic performance is insufficient due to the lack of localization of the conductive metal compound. If the humidity is higher than 60%, the localization of the conductive metal compound is excessively progressed due to the adsorption of moisture in the air. There is a problem of causing haze.

After the drying is completed, it is irradiated with UV light and cured. The irradiation amount of the UV light is preferably about 0.01 to 10 J / cm 2, more preferably 0.1 to 2 J / cm 2.

The antistatic hard coating film prepared as described above exhibits excellent antistatic performance as the conductive metal oxide used as an antistatic agent is localized on the surface in the drying process, and can obtain excellent transmittance by using a small amount of conductive metal oxide. have.

The polarizing plate according to the present invention is formed by laminating the aforementioned antistatic hard coating film on at least one surface. The polarizer may be provided with a protective film on at least one surface.

The polarizer is a film uniaxially stretched by adsorbing a dichroic substance such as iodine or a dichroic dye to a hydrophilic polymer film such as a polyvinyl alcohol film or an ethylene-vinyl acetate copolymerized partial saponified film. Polyene type alignment films, such as a dehydration thing and the dehydrochlorination material of polyvinyl chloride, etc. can be used. Preferably it may be made of a dichroic material such as polyvinyl alcohol-based film and iodine. Although the thickness of these polarizers is not specifically limited, Generally, it is about 5-80 micrometers.

When the polarizer is provided with a protective film on at least one surface, the protective film may be preferably applied excellent in transparency, mechanical strength, thermal stability, moisture shielding, isotropy.

For example, the protective film may be a polyester film such as polyethylene terephthalate, polyethylene isophthalate, polybutylene terephthalate or the like; Cellulose films such as diacetyl cellulose and triacetyl cellulose; Polycarbonate film; Acrylic films such as polymethyl (meth) acrylate and polyethyl (meth) acrylate; Styrene films such as polystyrene and acrylonitrile-styrene copolymers; Polyolefin-based films such as polyethylene, polypropylene, cyclo- or polyolefin-based films having a norbornene structure, and ethylene propylene copolymers; Polyimide film; Polyether sulfone-based film; Sulfone type films and the like can be used. Among the protective films exemplified above, a triacetyl cellulose film may be preferably used in view of excellent transparency and no optically anisotropy. The thickness of the protective film is not particularly limited, and is preferably 8 to 1000 µm, more preferably 40 to 100 µm.

The present invention provides a display device with an antistatic hard coating film according to the present invention described above.

For example, the display device according to the present invention may be manufactured by embedding the polarizing plate with the antistatic hard coating film according to the present invention in the display device. In addition, the antistatic hard coating film of the present invention may be attached to the window of the display device. The antistatic hard coating film of the present invention can be preferably used in reflective, transmissive, semi-transmissive LCD or LCD of various driving methods such as TN type, STN type, OCB type, HAN type, VA type, IPS type and the like. In addition, the antistatic hard coating film of the present invention can be preferably used for various display devices such as plasma displays, field emission displays, organic EL displays, inorganic EL displays, electronic papers, and the like.

The present invention will be further illustrated by the following examples, which are merely illustrative of the present invention and are not intended to limit or limit the scope of the present invention.

Examples 1 to 20, Comparative Examples 1 and 2 Preparation of an antistatic hard coating film

To the mixture as shown in Tables 1 and 2 to prepare an antistatic hard coating composition. Thereafter, the antistatic hard coating composition was coated with a Meyer bar (a kind of gravure coater) to a thickness of 5 μm on a transparent substrate film (80 μm, TAC), and then dried at 70 ° C. for 1 minute, and then cured at 500 mJ / cm ² . An antistatic hard coating film was prepared. At this time, the humidity during the coating was adjusted as shown in Table 1 and Table 2.

Composition Example One 2 3 4 5 6 7 8 9 10 11 (Meth) acrylate monomer 40 40 40 40 40 40 40 40 40 40 40 ATO Dispersion Sol 15 15 15 15 15 15 15 15 15 15 15 ITO Dispersion Sol solvent MEK 40.7 25 25 15 15 25 MIBK 40.7 25 25 15 15 IPA 15.7 25.7 15.7 25.7 15.7 MEC 15.7 25.7 15.7 25.7 Photoinitiator I-184 4 4 4 4 4 4 4 4 4 4 4 additive BYK-378 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 Humidity in Coating (%) 45 45 45 45 45 45 45 45 45 45 40

Composition Example Comparative example 12 13 14 15 16 17 18 19 20 One 2 (Meth) acrylate monomer 40 40 29 42 38 40 40 40 40 40 40 ATO Dispersion Sol 15 15 15 2 30 15 15 15 15 ITO Dispersion Sol 30 4 solvent MEK 25 5 36 39 27.7 40.7 10 36 MIBK 40.7 IPA 15.7 35.7 15.7 12.7 15.7 15.7 40.7 MEC 40.7 Photoinitiator I-184 4 4 4 4 4 4 4 4 4 4 4 additive BYK-378 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 Humidity in Coating (%) 60 45 45 45 45 30 70 45 45 45 45

The components used in Table 1 and Table 2 are as follows.

(Meth) acrylate monomer: pentaerythritol tri / tetraacrylate (Miwon Corporation, M340)

ATO dispersing sol: V-3560 (catalytic, 20% solids, solvent (methanol, ethanol, isopropyl alcohol), average particle diameter 35nm)

ITO Dispersion Sol: AIS-E030 (Unknown Tech, Solid content 40%, Average particle size 30nm)

MEK: methyl ethyl ketone

MIBK: methyl isobutyl ketone

IPA: Isopropyl Alcohol

MEC: Methyl Cellulsolve

I-184: 1-hydroxycyclohexylphenyl ketone (Shiba Corporation)

BYK-378: silicone modified oil (BYK)

<Experimental Example>

Physical properties of the antistatic hard coating film prepared as described above were measured as follows, and the results are shown in Tables 3 and 4 below.

(1) transmittance and haze

Total transmittance and haze were measured by using a spectrophotometer (HZ-1, manufactured by Suga Japan) as the TAC plane toward the light source D65.

Total light transmittance (%)

5: 95% or more

4: 93% or more

3: 90% or more

2: 85% or more

1: 80% or more

(2) pencil hardness

The hard coating layer of the prepared hard coating film was subjected to a 500g load with a pencil hardness tester (PHT, manufactured by Seokbo Science, Inc.), and the pencil hardness was measured. The pencil was made five times per pencil hardness using Mitsubishi products. If there were two or more gases, it was determined to be defective, and pencil hardness was indicated by a pencil before the failure occurred.

Kiss: 0 OK

Kiss: 1 OK

Ges: 2 or more NG

(3) scratch resistance

Scratch resistance was tested by reciprocating 10 times under 1 kg / (2 cm x 2 cm) using a steel wool tester (WT-LCM100, Korea Protec Co.).

Steel wool used # 0000.

A: 0 scratches

A ': 1 to 10 scratches

B: 11-20 scratches

C: 21-30 scratches

D: 31 or more scratches

(4) Adhesion

Eleven straight lines were drawn on the coated surface of the film at intervals of 1 mm each to form 100 squares, and then three peel tests were conducted using a tape (CT-24, Nichi Nippon Corp.). Three 100 squares were tested and averaged. The adhesion was recorded as follows.

Adhesion = n / 100

n: number of rectangles not peeled off

100: total squares

Therefore, when none of the peeling was recorded as 100/100.

(5) surface resistance

The surface resistance was measured on the coated surface of the film using the surface resistance measuring instrument (MCP-HT450, Japan Mitsubishi Chemical Corporation). Cross-sectional photographs of the film are shown in FIG. 1 (Example 1), FIG. 2 (Example 7) and FIG. 3 (Comparative Example 1) in order to confirm the ATO surface ubiquitous state of the prepared film.

(6) curling

The sample cut into the square shape of A4 size (29.7 X 21.0 cm) was placed on a flat glass plate with the coated surface of the film facing up, and the distance from the square glass plate was measured at 25 ° C. and 50% RH, and then averaged. Was taken as a measured value.

Very good: 0 to 15 mm or less, Good: 15 mm to 30 mm or less, Poor: 30 mm to 50 mm or less, Very poor: 50 mm or more.

Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 Example 11 Coating Thickness (탆) 5 5 5 5 5 5 5 5 5 5 5 Total light transmittance
(%) 91.3 91.2 91.2 91.3 91.3 91.2 91.0 91.3 91.2 91.0 91.3 Haze (%) 0.3 0.3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 Scratch resistance A A A A A A A A A A A Pencil hardness 2 H 2 H 2 2 H 2 H 2H 2 H 2 H 2H 2H 2H Adhesiveness 100 /
100 100 /
100 100 /
100 100 /
100 100 /
100 100 /
100 100 /
100 100 /
100 100 /
100 100 /
100 100 /
100 Surface resistance
(Ω / cm ² ) 10 ⁸ 10 ⁸ 10 ⁹ 10 ⁹ 10 ⁹ 10 ⁹ 10 ¹⁰ 10 ¹⁰ 10 ¹⁰ 10 ¹⁰ 10 ⁹ curling Good Good Good Good Good Good Good Good Good Good Good

Example 12 Example 13 Example 14 Example 15 Example 16 Example 17 Example 18 Example 19 Example 20 Comparative Example 1 Comparative Example 2 Coating Thickness (탆) 5 5 5 5 5 5 5 5 5 5 5 Total light transmittance
(%) 91.2 91.3 91.2 91.3 89.7 91.3 90.6 91.3 91.2 91.3 91.3 Haze (%) 0.2 0.2 0.2 0.2 1.5 0.2 2.4 0.3 0.3 0.2 0.3 Scratch resistance A A A A A A A A A A A Pencil hardness 2H 2 H 2 H 2 H 2 H 2 H 2 H 2 H 2 H 2 H 2 H Adhesiveness 100 /
100 100 /
100 100 /
100 100 /
100 100 /
100 100 /
100 100 /
100 100 /
100 100 /
100 100 /
100 100 /
100 Surface resistance
(Ω / cm ² ) 10 ⁹ 10 ¹¹ 10 ¹¹ 10 ¹³ 10 ⁹ 10 ¹³ 10 ⁸ 10 ⁸ 10 ¹² over over curling Good Good Good Good Good Good Good Good Good Good Good

In Tables 3 and 4, “over”, which is one of the results of the surface resistance value, indicates that the surface resistance is high and the resistance value is not measured in the measurement equipment and is marked as over.

As shown in Tables 3 and 4, in the case of the antistatic hard coating composition of the embodiment including a carbonyl group-containing organic solvent together with ATO or ITO, which is a conductive metal compound, according to the present invention, when ATO or ITO is localized on the surface, the comparison is performed. Compared with the antistatic hard coating composition of the example it can be confirmed that the excellent antistatic performance and the improvement of transmittance.

Claims (9)

An antistatic hard coating composition comprising a conductive metal compound (A), a carbonyl group-containing organic solvent (B), a (meth) acrylate monomer (C), and a photoinitiator (D). The method of claim 1, wherein the conductive metal compound is an antistatic hard coating composition, characterized in that 0.5 to 5 parts by weight based on 100 parts by weight of the total antistatic hard coating composition. The method of claim 1, wherein the conductive metal compound is an antistatic hard coating composition, characterized in that the average particle diameter of 1 to 120nm. The antistatic hard coating composition according to claim 1, wherein the carbonyl group-containing organic solvent is included in an amount of 10 to 50 parts by weight based on 100 parts by weight of the total antistatic hard coating composition. An antistatic hard coating layer formed by applying the antistatic hard coating composition of any one of claims 1 to 4 on the one or both sides of the substrate and then drying to localize the conductive metal compound on the surface and then harden it. Resistant hard coating film. The method according to claim 5, wherein the coating thickness of the antistatic hard coating composition is an antistatic hard coating film, characterized in that 3 to 20㎛ based on a dry coating film The method of claim 5, wherein the antistatic hard coating composition when the humidity of the coating is characterized in that the antistatic hard coating film, characterized in that 40 to 60%. Polarizing plate, characterized in that the antistatic hard coating film of claim 5 is provided. Display device characterized in that the antistatic hard coating film of claim 5 is provided.

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