KR102326209B1 - Transparent anti static electricity film and display device having the same - Google Patents

Abstract

The transparent antistatic film according to the present invention includes a matrix material, a plurality of conductive nanomaterials uniformly dispersed in the matrix material, a surfactant coupled to some conductive nanomaterials among a plurality of conductive nanomaterials, and a plurality of conductive nanomaterials. Among the materials, it may include a dispersed polymer bound to a conductive nanomaterial to which a surfactant is not bound.

Description

Transparent antistatic film and display device including same

The present invention relates to a transparent antistatic film and a display device including the same.

With the development of industrialization, as damage due to static electricity increases in many fields ranging from various electronic and electrical devices, information and communication fields, and general household goods, the need for preventing static electricity in the related fields is increasing day by day.

Problems caused by static electricity in the industrial field are that impurities or dust adhere to the product as static electricity is generated, and discharge occurs in the film manufacturing process or film processing process. rises

In addition, when static electricity is generated in materials such as electric and electronic parts, it is a major cause of product damage, so it is essential to provide antistatic performance in the electric and electronic fields.

As a structure for preventing static electricity, the antistatic film, which uses carbon nanotubes as conductive nanomaterials and grafts a matrix material, has thermal stability and can be applied to electronic products even in high temperature, high temperature and high humidity environments.

However, conductive nanomaterials such as carbon nanotubes have a problem in that they are not easily dispersed, and the antistatic film including non-dispersed conductive nanomaterials has a non-uniform sheet resistance value due to agglomeration, and light transmittance is lowered. problems may arise.
Background art of the present invention is disclosed in Korean Patent Laid-Open Publication Nos. 10-2011-0018024 (2011.02.23) and 10-2013-0035684 (2013.04.09).

An object of the present invention is to provide a transparent antistatic film that prevents aggregation of conductive nanomaterials, realizes a uniform sheet resistance value over the entire surface, and improves light transmittance, and a display device including the same.

In order to solve the above problems, the transparent antistatic film according to the present invention is coupled to a matrix material, a plurality of conductive nanomaterials uniformly dispersed in the matrix material, and some conductive nanomaterials among the plurality of conductive nanomaterials. It may include a surfactant and a dispersed polymer bound to a conductive nanomaterial to which a surfactant is not bound among a plurality of conductive nanomaterials.

In another aspect, the display device according to the present invention may include a lower substrate, an upper substrate facing the lower substrate, and a transparent antistatic film disposed on the upper substrate.

Here, the transparent antistatic film includes a matrix material, a plurality of conductive nanomaterials uniformly dispersed in the matrix material, a surfactant coupled to some conductive nanomaterials among a plurality of conductive nanomaterials, and the surfactant among a plurality of conductive nanomaterials. may include a dispersed polymer bonded to the conductive nanomaterial to which it is not bonded.

The transparent antistatic film and the display device including the same according to the present invention have the effect of preventing aggregation of conductive nanomaterials, realizing a uniform sheet resistance value over the entire surface, and improving light transmittance.

1 shows a schematic plan view of a typical transparent antistatic film.
2 is a schematic plan view of a transparent antistatic film according to an embodiment.
3A shows an example of a conductive nanomaterial.
3B shows an example of a matrix material.
4 shows a form in which a conductive nanomaterial and a dispersed polymer are combined in a transparent antistatic film according to embodiments.
5A to 5E show examples of a bonding form of a conductive nanomaterial and a surfactant in a transparent antistatic film according to embodiments.
6A and 6B schematically show cross-sections of examples of display devices including a transparent antistatic film according to embodiments.
7 is a table comparing zeta potential values of a general transparent antistatic film and a transparent antistatic film according to an embodiment.
8A shows the sheet resistance values for each region of a general transparent antistatic film, and FIG. 8B shows the sheet resistance values for each region of the transparent antistatic film according to the embodiment.
9 is a table comparing the uniformity of sheet resistance values of a general transparent antistatic film and a transparent antistatic film according to an embodiment.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiments of the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the components from other components, and the essence, order, or order of the components are not limited by the terms. When a component is described as being “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but another component is between each component. It should be understood that elements may be “connected,” “coupled,” or “connected.” In the same vein, when it is described that a component is formed "on" or "below" another component, the component is both formed directly on the other component or indirectly through another component. should be understood as including

1 shows a schematic plan view of a typical transparent antistatic film.

Referring to FIG. 1 , a typical transparent antistatic film 110 includes a matrix material 112 and a conductive nanomaterial 116 dispersed in the matrix material 112 . Also, although not shown, the transparent antistatic film 110 may include a surfactant (not shown).

Specifically, the transparent antistatic film 110 may include a matrix material 112 , a surfactant (not shown), and a conductive nanomaterial 116 , and the matrix material 112 is the transparent antistatic film 110 . As a skeleton material, it may be a resin that is composed of water-soluble atoms and can play a stabilizing role, such as preventing phase separation or alteration of contents.

Surfactant (not shown) is an amphiphilic material having hydrophilicity and hydrophobicity in itself, and the hydrophobic portion of the surfactant has affinity with carbon nanotubes in the aqueous solution, and the hydrophilic portion has affinity with water, which is the solvent, in the aqueous solution. It can serve to help the tube to be dispersed stably.

The conductive nanomaterial 116 may be a carbon nanotube, and the carbon nanotube has a very low electrical resistance value due to its structural characteristics and has a very long length. Carbon nanotubes are single-walled carbon nanotube (SWCNT), double-walled carbon nanotube (DWCNT), multi-walled carbon nanotube (MWCNT), and bundle type. One selected from among the carbon nanotubes (rope carbon nanotube) may be used.

The transparent antistatic film 110 is formed by curing a composition in a solution state by applying light or heat. In this process, as shown in FIG. 1 , the conductive nanomaterial 116 may be agglomerated due to Van Der Waals force when dispersion does not occur sufficiently.

When aggregation of the conductive nanomaterial 116 occurs, when the composition is coated and cured, the sheet resistance value is spread, so that the sheet resistance value is not uniform for each area, and thus the function as an antistatic film is reduced. do. In addition, due to the aggregation of the conductive nanomaterial 116 , light transmittance may be reduced.

In addition, a clogging phenomenon may occur due to aggregation of the conductive nanomaterial 116 inside the device for supplying the composition during the coating process.

On the other hand, the transparent antistatic film 116 according to the embodiments has a structure that solves the above-described problems.

FIG. 2 shows a schematic plan view of a transparent antistatic film according to an embodiment, FIG. 3A shows an example of a conductive nanomaterial, and FIG. 3B shows an example of a matrix material.

Referring to FIGS. 2 to 3B , the transparent antistatic film 210 includes a matrix material 212 , a plurality of conductive nanomaterials 216 uniformly dispersed in the matrix material 212 , and a plurality of conductive nanomaterials. A surfactant 222 bonded to a part of the conductive nanomaterial 216 of the material 216 and a surfactant 222 among the plurality of conductive nanomaterials 216 are bonded to the conductive nanomaterial 216 to which they are not bonded. The dispersed polymer 232 may be included.

Here, the conductive nanomaterial 216 may be, for example, carbon nanotubes (see FIG. 3B ). The carbon nanotube 216 has a very low electrical resistance value due to its structural characteristics and has a very long length. The carbon nanotube 216 is a single-walled carbon nanotube (SWCNT), a double-walled carbon nanotube (DWCNT), a multi-walled carbon nanotube (MWCNT). , it is possible to use one selected from the bundle type carbon nanotube (rope carbon nanotube).

The conductive nanomaterial 216 is uniformly dispersed in the matrix material 212 , because the conductive nanomaterial 216 is bound to the surfactant 222 or the dispersed polymer 232 .

The matrix material 212 is a material serving as a skeleton of the transparent antistatic film 210 , and may be a resin that is composed of water-soluble atoms and can play a central role or a stabilizing role such as preventing phase separation or deterioration of contents. In particular, the matrix material 212 holds moisture and performs a stabilizing function to prevent phase separation and recombination of the dispersed conductive nanomaterials.

The matrix material 212 may be, for example, TetraEthylOrthoSilicate (TEOS) (see FIG. 3B ), but is not limited thereto.

On the other hand, the surfactant 222 is an amphiphilic material having hydrophilicity and hydrophobicity in itself, and the hydrophobic portion 226 of the surfactant 222 in the aqueous solution has affinity with the carbon nanotubes 216 and the hydrophilic portion 224. Silver has an affinity for the hydrophilic solvent and may serve to stably disperse the carbon nanotubes 216 in the solution.

As can be seen in the enlarged view of FIG. 2 , the hydrophobic portion 226 of the surfactant 222 is bonded to the carbon nanotube 216 through a hydrophobic bond, and the hydrophilic portion 224 may be arranged toward the solvent. Through this, a gap between the carbon nanotubes 216 is formed. That is, the surfactant 222 is combined with a portion of the conductive nanomaterial 216 to generate an effect of improving dispersibility, and thereby the sheet resistance value of the transparent antistatic film 210 may be uniform.

The hydrophobic portion 226 of the surfactant 222 may be composed of a long alkyl chain, and the hydrophilic portion 224 may have a sodium salt form. For example, the hydrophobic portion 226 may have a long chain structure consisting of 10 or more carbons, and the hydrophilic portion 224 may be used in both ionic and nonionic forms.

The surfactant 222 may be, for example, sodium dodecyl sulfate (SodiumDodecylSulfate, SDS) or sodium dodecylbenzenesulfonate (SDBS), but is not limited thereto.

On the other hand, the dispersed polymer 232 includes a directional molecule 236 at one end. In this case, the directional molecule 236 and the conductive nanomaterial 216 are coupled by pi-pi stacking.

Referring to the enlarged view of FIG. 2 , the aromatic molecule 236 positioned at one end of the dispersed polymer 232 includes a conjugated structure. That is, the directional molecule 236 has a conjugation structure in which multiple bonds and single bonds alternately exist, and the directional molecule 236 is conductive by stacking of π electrons present in this conjugation structure. to be bonded to the nanomaterial 216 .

Accordingly, a gap may be generated between the conductive nanomaterials 216 , so that the respective conductive nanomaterials 216 may be dispersed with each other.

The aromatic molecule 236 may be, for example, one of pyridine, pyrene, and porphyrin, but is not limited thereto.

In summary, some of the conductive nanomaterials 216 are combined with a surfactant and uniformly dispersed. It is uniformly dispersed through binding with

Accordingly, in the transparent antistatic film 210 , the conductive nanomaterial 216 is uniformly dispersed over the entire surface, and the sheet resistance value of the transparent antistatic film 210 becomes uniform over the entire surface.

Meanwhile, the above-described transparent antistatic film 210 is formed by coating a composition in a solution state on a base substrate and then curing it by heat or light irradiation.

Specifically, the composition may include a solvent, a matrix material 212 , a surfactant (and a conductive nanomaterial 216 ).

Here, the solvent may be hydrophilic, for example, distilled water, methanol, ethanol, acetone, methyl ethyl ketone, isopropyl alcohol (Isopropylalcohol), butyl alcohol (Butylalcohol), ethylene glycol (Ethyleneglycol), polyethylene glycol (Polyethyleneglycol), tetrahydrofuran (Tetrahydropuran), dimethylformamide (Dimethylformaldehyde), dimethylacetamide (Dimethylacetamide), hexane (Hexane), cyclohexanone ( Cyclohexanone), toluene, chloroform, dichlorobenzene, dimethylbenzene, pyridine, aniline, and mixtures thereof may be selected from the group consisting of.

Hereinafter, the bonding between the conductive nanomaterial 216 and the surfactant and the dispersed polymer will be described in more detail.

4 shows a form in which a conductive nanomaterial and a dispersed polymer are combined in a transparent antistatic film according to embodiments.

In FIG. 4 , carbon nanotubes 216 are shown as the conductive nanomaterial 216 , and pyrene, which is a form in which four benzene rings are bonded, is shown as the aromatic molecule 236 positioned at one end of the dispersed polymer 232 . However, it should be noted that this is illustrated as an example for convenience of description, and embodiments are not limited thereto.

Referring to FIG. 4 , the dispersed polymer 232 may include a polymer portion 234 and one end of the aromatic molecule 236 .

Here, the dispersed polymer 232 may include two or more aromatic molecules 236 at one end. The directional molecules 236 may be coupled to the carbon nanotubes 216 by pi-pi stacking. In other words, as shown in the enlarged view of FIG. 4 , one end of the dispersed polymer 232 is a carbon nanotube due to the accumulation between π electrons of pyrene, which is a planar directional molecule, and π electrons of the carbon nanotube 216 . (216) can be adsorbed.

A plurality of dispersed polymers 232 and carbon nanotubes 216 may be combined, and a plurality of aromatic molecules 236 may be combined with carbon nanotubes 216 in one dispersed polymer 232 . The bonding form shown in FIG. 4 is exemplary, and the carbon nanotubes 216 and the dispersed polymer 232 according to embodiments are not limited thereto and may be combined in various forms.

In addition, Van der Waals force, which is a force between non-polar molecules, may be involved in the bonding between the dispersed polymer 232 and the carbon nanotubes 216 .

Meanwhile, the polymer portion 234 of the dispersed polymer 232 may be, for example, poly(Methyl MethAcrylate) (PMMA), but is not limited thereto.

Due to the bonding between the carbon nanotubes 216 and the dispersed polymer, a gap (distance) occurs between adjacent carbon nanotubes 216 . In other words, aggregation of the plurality of carbon nanotubes 216 is prevented, and a dispersion effect may occur. Accordingly, a sheet resistance value is uniformly formed over the entire surface of the transparent antistatic film 210 , and light transmittance may be improved due to the uniform dispersion of the carbon nanotubes 216 .

5A to 5E show examples of a bonding form of a conductive nanomaterial and a surfactant in a transparent antistatic film according to embodiments.

5A to 5E , in the transparent antistatic film 210 , various bonding types in which the surfactant 222 is adsorbed to the conductive nanomaterial 216 are shown.

5A and 5B are views showing the same bonding structure in different directions, and FIG. 5D is a view showing the same bonding structure as in FIG. 5C in chemical formula form.

In the case of the transparent antistatic film 210 shown in FIGS. 5A and 5B , the surfactant 222 surrounds the carbon nanotube 216 in the circumferential direction. The hydrophobic portion 226 of the surfactant 222 is adsorbed through a hydrophobic bond with the carbon nanotube 216 , and the hydrophilic portion 224 of the surfactant 222 faces the outside of the carbon nanotube 216 .

According to this bonding structure, a space or a gap is generated between adjacent carbon nanotubes 216 among the plurality of carbon nanotubes 216 , and aggregation of the carbon nanotubes 216 is prevented.

Meanwhile, in the case of the transparent antistatic film 210 shown in FIGS. 5C and 5D , the surfactant 222 surrounds the carbon nanotube 216 in the longitudinal direction. That is, the surfactant 222 surrounds the carbon nanotubes 216 in the form of a micelle structure.

The surfactant 222 may be, for example, sodium dodecylsulfate (SDS). Since the hydrophilic portion 224 of sodium dodecyl sulfate has a negative charge, it has a negative charge and a repulsive force of the adjacent sodium dodecyl sulfate. Accordingly, there is an effect that the carbon nanotubes 216 can be more uniformly dispersed.

Meanwhile, in the case of the transparent antistatic film 210 shown in FIG. 5E , the surfactant 222 may be randomly arranged on the surface of the carbon nanotubes 216 . However, even in this case, the bonding of the hydrophobic portion 226 of the surfactant 222 to the carbon nanotube 216 is the same.

In summary, in the transparent antistatic film 210 according to the embodiments, a portion of the conductive nanomaterial 216 may be combined with the surfactant 222 , and another portion may be combined with the dispersed polymer 232 .

The surfactant 222 and the dispersed polymer 232 generate an effect of preventing aggregation of the conductive nanomaterial 216 . In addition, as will be described later, when the dispersed polymer 232 and the surfactant 222 are present at the same time, a more significant effect is obtained than when only the surfactant 222 is present like the general transparent antistatic film 210 . That is, when the dispersed polymer 232 and the surfactant 222 are present at the same time, the light transmittance and the uniformity characteristics of the sheet resistance are more excellent.

6A and 6B schematically show cross-sections of examples of display devices including a transparent antistatic film according to embodiments.

6A and 6B , the display device 200 includes a lower substrate 262 , an upper substrate 272 facing the lower substrate 262 , and a transparent antistatic film 210 positioned on the upper substrate 272 . ) is included.

Here, the transparent antistatic film 210 includes a matrix material 212 , a plurality of conductive nanomaterials 216 uniformly dispersed in the matrix material 212 , and some of the conductive nanomaterials 216 . It may include a surfactant 222 bonded to the nanomaterial 216 and a dispersed polymer 232 bonded to another conductive nanomaterial 216 among the plurality of conductive nanomaterials 216 .

In the case of FIG. 6A, a lower polarizing film 250a is positioned under the lower substrate 262 (downward in the drawing), and a cell 266 is positioned between the lower substrate 262 and the upper substrate 272, , the upper polarizing film 250b is positioned on the touch screen panel 276 . The transparent antistatic film 210 is disposed between the upper substrate 272 and the touch screen panel (TSP, 276).

The lower substrate 262 and the upper substrate 272 may be made of glass, but is not limited thereto.

The display device 200 of FIG. 6A is an on-cell type display device in which a touch screen panel 276 is embedded between an upper substrate 272 and an upper polarizing film 250b. The cell 266 may be, for example, a liquid crystal layer of a liquid crystal display (LCD) or an organic layer of an organic light emitting display (OLED).

On the other hand, in the case of FIG. 6B, a lower polarizing film 250a is positioned under the lower substrate 262, an upper polarizing film 250b is positioned on the upper substrate 272, and the transparent antistatic film 210 is formed on the upper substrate ( 272) and the upper polarizing film 250b.

In the display device 200 of FIG. 6B , the touch screen panel 276 is formed between the lower substrate 262 and the upper substrate 272 , that is, together with the cell 266 , and is embedded therein. Type) of the display device 200 . The cell 266 may be, for example, a liquid crystal layer or an organic layer.

The on-cell type or in-cell type display device 200 has a thinner overall thickness and a touch screen panel ( By embedding the TSP) inside the upper polarizing film 250b, the number of processes is reduced and the process time is reduced.

At this time, when static electricity is generated in the upper substrate 272 or the touch screen panel 276 or the upper polarizing film 250b of the display device 200 , the transparent antistatic film 210 according to the embodiments may remove the static electricity. perform the function

When static electricity is generated in the display device 200, it is a major cause of product damage, so it is an essential requirement to provide antistatic performance in the electric and electronic fields, and the above-described transparent antistatic film 210 is Prevents and increases the reliability of the product.

Here, the conductive nanomaterial 216 included in the transparent antistatic film 210 may include carbon nanotubes 216 .

On the other hand, the dispersed polymer 232 included in the transparent antistatic film 210 includes a directional molecule 236 at one end, and the directional molecule 236 and the conductive nanomaterial 216 are combined by pi-pi stacking. The dispersibility of the conductive nanomaterial 216 is improved.

In addition, the conductive nanomaterial 216 that is not bonded to the dispersed polymer 232 may be bonded to the surfactant 222 , and the hydrophobic portion 226 of the surfactant 222 is bonded to the conductive nanomaterial 216 . Aggregation of the conductive nanomaterial 216 is prevented.

Accordingly, the display device 200 including the transparent antistatic film 210 according to the embodiments has an effect of improving light transmittance and uniform sheet resistance across the entire surface.

Meanwhile, although not shown in the drawings, the transparent antistatic film 210 is formed through a coating process. The transparent antistatic film 210 may be coated, for example, by a method such as slit coating.

In this coating process, a problem may occur in which the conductive nanomaterials 216 are aggregated and adsorbed to the pipe of the coater for coating. For example, in the solution for the antistatic film 210 inside the slit coater, if aggregation by van der Waals' attraction between the carbon nanotubes 216 occurs, a problem may occur in the piping and filter of the equipment. can

However, in the process of forming the transparent antistatic film 210 according to the embodiments, since aggregation between the carbon nanotubes 216 is prevented, these phenomena can be prevented.

7 is a table comparing zeta potential values of a general transparent antistatic film and a transparent antistatic film according to an embodiment.

Zeta potential is a unit for the magnitude of the repulsive or attractive force between particles. That is, if the absolute value of the zeta potential is large, the repulsive force between the particles is large, and if the absolute value is small, it means that the cohesive force is large.

Referring to FIG. 7 , Sample 1 is a general transparent antistatic film 110 , and includes a matrix material 112 , carbon nanotubes 116 , and a surfactant (not shown). On the other hand, Sample 2 is a transparent antistatic film 110 according to the embodiment, and includes a matrix material 212 , carbon nanotubes 216 , a surfactant 222 , and a dispersed polymer 232 .

The zeta potential (ξ, mV) value of each sample is a value calculated by Equation 1 below.

[Equation 1]

In Equation 1, η represents the viscosity of the solvent or electrolyte, μ means mobility (cm 2 /Vs) of particles, and ε means permittivity (V/cm) of particles.

In the table, the absolute value of the zeta potential of the transparent antistatic film 210 according to the embodiment is 9.09 mV, and the absolute value of the zeta potential of the general transparent antistatic film 110 is 1.42 mV. It turns out that acidity is remarkably excellent.

Such dispersibility appears because not only the surfactant 222 but also the dispersed polymer 232 are bonded to the surface of the carbon nanotubes 216 to create a distance between the adjacent carbon nanotubes 216 .

Fig. 8a shows the sheet resistance value for each area of the general transparent antistatic film, Fig. 8b shows the sheet resistance value for each area of the transparent antistatic film according to the embodiment, and Fig. 9 is the general transparent antistatic film and the sheet resistance of the transparent antistatic film according to the embodiment This is a table comparing the uniformity of values.

8A and 8B show the sheet resistance values of each area by dividing the surface of the transparent antistatic films 110 and 210 into 25 areas of 5 x 5, and each number is a log value for the sheet resistance value. In FIG. 9 , Sample 1 is a range of sheet resistance values corresponding to FIG. 8A , and Sample 2 is a range of sheet resistance values corresponding to FIG. 8B .

In the case of the general transparent antistatic film 110, it can be seen that the range of the log value of the sheet resistance value is 7.9 to 10.4. On the other hand, in the case of the transparent antistatic film 210 according to the embodiment, it can be seen that the range of the log value of the sheet resistance value is 7.7 to 8.2.

Accordingly, it can be seen that the logarithmic value of Sample 2 is a smaller range, and the transparent antistatic film 210 according to the embodiment has a more uniform sheet resistance value.

In summary, the transparent antistatic film 210 and the display device 200 including the same according to the embodiments prevent aggregation of the conductive nanomaterial 216 , and thus have uniform sheet resistance over the entire surface of the transparent antistatic film 210 . It has the effect of securing the value and improving the light transmittance. In the coating process during the formation of the transparent antistatic film 210 , it is possible to prevent clogging of the pipe due to the aggregation of the conductive nanomaterial 216 .

The embodiments have been described above with reference to the drawings, but the present invention is not limited thereto.

Terms such as "include", "compose" or "have" described above mean that the corresponding component may be embedded unless otherwise stated, so it does not exclude other components. It should be construed as being able to further include other components. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Terms commonly used, such as those defined in the dictionary, should be interpreted as being consistent with the meaning in the context of the related art, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

212: matrix material 216: conductive nanomaterial
222: surfactant 232: dispersed polymer
262: lower substrate 272: upper substrate

Claims (10)

matrix material;
a plurality of carbon nanotubes uniformly dispersed in the matrix material;
a surfactant coupled to some of the plurality of carbon nanotubes; and
and a dispersed polymer bonded to the carbon nanotube to which the surfactant is not bound among the carbon nanotubes,
Van der Waals' attractive force, which is a force between non-polar molecules, is applied to the bonding between the dispersed polymer and the carbon nanotube,
The dispersed polymer includes a directional molecule, and in a portion where the dispersed polymer and the carbon nanotube are combined, the aromatic molecule and the carbon nanotube are pi-a plurality of the carbons adjacent by pi stacking (π-π stacking). A gap is generated between the nanotubes so that a plurality of the carbon nanotubes are dispersed,
The surfactant includes a hydrophobic portion and a hydrophilic portion connected to the hydrophobic portion, the hydrophobic portion of the surfactant is adsorbed to the surface of the carbon nanotube, and the hydrophilic portion of the surfactant is outside the carbon nanotube heading,
In the portion where the surfactant and the carbon nanotubes are combined, a space or gap is generated between adjacent carbon nanotubes among a plurality of carbon nanotubes to prevent aggregation of the carbon nanotubes,
The surfactant surrounds the carbon nanotube in the form of a micelle structure,
The surfactant surrounds the carbon nanotube in the longitudinal direction of the carbon nanotube,
The range of the log value of the sheet resistance value is 7.7 to 8.2,
The matrix material is a transparent antistatic film for a display device comprising the following material.

delete delete The method of claim 1,
The aromatic molecule is
A transparent antistatic film, characterized in that it is one of pyridine, pyrene, and porphyrin. The method of claim 1,
The transparent antistatic film, characterized in that the sheet resistance (Sheet Resistance) is uniform over the entire surface of the transparent antistatic film. lower substrate;
an upper substrate facing the lower substrate; and
A transparent antistatic film for a display device positioned on the upper substrate,
The transparent antistatic film for the display device,
A matrix material, a plurality of carbon nanotubes uniformly dispersed in the matrix material, a surfactant coupled to some carbon nanotubes among the plurality of carbon nanotubes, and the surfactant among the plurality of carbon nanotubes It contains a dispersed polymer bonded to the carbon nanotubes that are not bonded,
Van der Waals' attractive force, which is a force between non-polar molecules, is applied to the bonding between the dispersed polymer and the carbon nanotube,
The dispersed polymer includes a directional molecule, and in a portion where the dispersed polymer and the carbon nanotube are combined, the aromatic molecule and the carbon nanotube are pi-a plurality of the carbons adjacent by pi stacking (π-π stacking). A gap is generated between the nanotubes, so that a plurality of the carbon nanotubes are dispersed,
The surfactant includes a hydrophobic portion and a hydrophilic portion connected to the hydrophobic portion, wherein the hydrophobic portion of the surfactant is adsorbed on the surface of the carbon nanotube and the hydrophilic portion of the surfactant is outside the carbon nanotube heading,
In the portion where the surfactant and the carbon nanotubes are combined, a space or gap is generated between adjacent carbon nanotubes among a plurality of the carbon nanotubes to prevent aggregation of the carbon nanotubes,
The surfactant surrounds the carbon nanotube in the form of a micelle structure,
The surfactant surrounds the carbon nanotube in the longitudinal direction of the carbon nanotube,
The range of the log value of the sheet resistance value is 7.7 to 8.2,
The matrix material of the transparent antistatic layer includes the following material.

7. The method of claim 6,
Further comprising a polarizing film positioned on the upper substrate,
and the transparent antistatic film for the display device is positioned between the upper substrate and the polarizing film. delete delete 7. The method of claim 6,
The display device, characterized in that the sheet resistance of the transparent antistatic film for the display device is uniform over the entire surface.

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