KR20190103745A - Flexible transparent conductive electrode structure - Google Patents

Abstract

The present invention relates to a flexible transparent conductive electrode structure and, more specifically, to a flexible transparent conductive electrode structure including a coating layer manufactured by using poly (3,4-ethylenedioxythiophene)-polystyrene sulfonic acid (PEDOT/PSS) in the form of solid powder and having the high light transmittance, flexibility, storage stability, and properties of maintaining resistance for the bending. The flexible transparent conductive electrode structure includes a flexible substrate layer, an ITO layer, and a coating layer.

Description

Flexible transparent conductive electrode structure {FLEXIBLE TRANSPARENT CONDUCTIVE ELECTRODE STRUCTURE}

The present invention relates to a flexible transparent conductive electrode structure, and more particularly, to a coating layer prepared using poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) in the form of a solid powder, The present invention relates to a flexible transparent conductive electrode structure having light transmittance, flexibility, storage stability, and resistance to bending.

Recently, due to the rapidly developing nano technology, information technology and display technology, the information is entering the ubiquitous era where information can be accessed anytime and anywhere, and accordingly, the necessity of a mobile information electronic device with easy portability and mobility is increasing.

As an information device that realizes the ubiquitous era, there is a growing need for flexible information electronic devices that can be freely transformed, flexible, light and portable.

Flexible information electronic energy devices, which are represented by flexible displays, flexible transistors, flexible touch panels, and flexible solar cells, control current and light by using flexible transparent electrodes, represented by ITO, as electrodes.

The flexible transparent electrode refers to an electrode material having high conductivity formed on a flexible substrate such as PET, PES, and PEN, and high transmittance in the visible region, and is flexible, and thus, the flexible transparent electrode can be used as an electrode of the flexible information electronic device described above.

The flexible transparent electrode, also called a conductive film, is a core component material in the field of information and electronic energy that can be used as an antistatic film, an antenna, and an optical filter depending on the sheet resistance, as well as the electrode for the flexible element.

As a material that can be applied as a flexible transparent electrode, which is a key material component of the flexible electronics industry, various transparent conducting oxides, carbon nanotubes, and graphene have been studied. Indium tin oxide (ITO) Due to various problems, a flexible transparent electrode in which a thin film is typically used, or a new device to replace it has recently been studied.

Currently, the flexible transparent electrode most commonly used as a transparent electrode for flexible displays, flexible solar cells, and touch panels is an indium tin oxide (ITO) thin film doped with indium oxide of 10 wt% tin oxide (SnO 2).

Sn4 + ions are substituted for the In3 + ion site to release electrons, resulting in high electron concentration, resulting in low specific resistance. Since the substitution process requires high energy, when the film is deposited on the glass substrate, the substrate temperature is increased to a temperature of 300 degrees or more, and tin ions can easily replace the indium ion site, thereby making a low resistance ITO electrode.

Because of its low resistance, ITO thin films exhibit crystalline properties due to their high substrate temperature. In general, ITO thin films can exhibit low resistivity similar to that of metals at room temperature because the high density of impurity made by doped tin is a typical degenerate semiconductor with the Fermi (EF) level above the conduction level (Ec). In addition, due to the large bandgap of 3.75eV, it can transmit more than 90% of the visible light and shows very transparent characteristics.

Since the electrical and optical properties of the ITO thin film are greatly influenced by tin doping and tin activation techniques, they are greatly influenced by the manufacturing technology of the raw material target and the sputtering process technology. Due to this low resistance and high transmittance, it has been used as a transparent electrode material for flat panel displays and solar cells based on glass substrates until now, but it is not suitable for flexible transparent electrodes for information electronic energy devices using flexible substrates such as PET. There are several problems. The flexible substrate represented by PET is difficult to process at a temperature of 200 degrees or more unlike a glass substrate, so that the formation of the ITO thin film is performed by roll-to-roll sputter at room temperature. However, the dopant substitution process (activation) in the ITO thin film requires a substrate temperature of more than 300 degrees, so the amorphous structure of the ITO thin film manufactured by the room temperature process has a very high sheet resistance and specific resistance. In particular, the amorphous structure of the ITO thin film shows low carrier concentration because tin ion is difficult to replace as shown in [Figure 3]. In addition, it has a very high defect density compared to the crystalline ITO thin film, which makes electron conduction difficult, resulting in low electron mobility. Due to the low electron mobility and low carrier concentration, the amorphous ITO thin film formed at room temperature shows high sheet resistance.

Therefore, the ITO thin film deposited on the PET substrate through the room temperature process has a problem of high surface resistance due to the difficulty of activation and the defect of amorphous through the substitution of tin dopant. In the case of a touch panel requiring a relatively high sheet resistance, an amorphous ITO electrode having a high sheet resistance may be used, but it is difficult to apply the amorphous ITO thin film as an electrode of another flexible information electronic device requiring a low sheet resistance.

In addition, since the amorphous oxide thin film is a ceramic material unlike a metal material or a polymer material, it has a very important problem in that cracks are easily formed and propagated due to low resistance to bending or bending of the substrate, thereby deteriorating the characteristics of the electrode. In order to take advantage of the flexible information and electronic devices, the flexibility of all components is a key factor, but the application of the flexible transparent electrode with flexibility is difficult because the application of the inflexible ITO thin film as the flexible transparent electrode can affect the device characteristics. need. In addition, the price of indium, the main material for ITO thin films, is continuously rising due to the rapid expansion of the flat panel display, mobile device, and touch panel markets, and the limited reserves pose a problem in the cost competitiveness of flexible transparent electrodes. Therefore, in order to preempt the competition in the flexible information electronic energy device technology to be developed in the future, researches on the development of a flexible transparent electrode material that can solve the problem of amorphous ITO electrode has been made.

Most of the development of electrode materials has been made to replace ITO itself with other materials. Until now, carbon nanotube films and graphene electrodes have been developed as electrode materials that can replace ITO. There are a lot of problems left to do.

An object of the present invention comprises a coating layer prepared using poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) in the form of a solid powder, and has high light transmittance, flexibility, storage stability, and bending resistance. It is to provide a flexible transparent conductive electrode structure having resistance to resistance.

In order to solve the above problems, the present invention, a flexible transparent conductive electrode structure, the electrode structure includes a flexible substrate layer, ITO layer, and a coating layer, the coating layer, the first organic poly (3,4-ethylene Dispersions comprising dioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) and an organic solvent; And a precoating mixture comprising an additional organic solvent, a curable binder, and an additive, are prepared by a mixed coating solution.

In the present invention, the dispersion solution includes an organic solvent, a dispersion aid, and poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS), in a mixed solvent in which the organic solvent and the dispersion aid are mixed. Poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) in solid powder form can be prepared by mixing.

In the present invention, the organic solvent, the dispersing aid and the poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) may be dispersed and mixed by a shearing force by a high shear mixer.

In the present invention, the organic solvent may include an organic solvent of amides.

In the present invention, the organic solvent may further include nitromethane.

In the present invention, after the organic solvent, the dispersing aid and the poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) is dispersed and mixed by shearing force by a high shear mixer, Additional distribution can be performed.

In the present invention, the dispersion aid is a first dispersion aid for aiding the dispersion of the poly (3,4-ethylenedioxythiophene) -polystyrene sulfonic acid (PEDOT / PSS) of the solid powder form; And a second dispersion aid for improving conductivity when the dispersion is coated.

In the present invention, the poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) is 0.5 to 2.0% by weight, the organic solvent is 80 to 97% by weight based on the total weight of the dispersion, The dispersion aid may be 1 to 12% by weight.

In the present invention, the additional organic solvent may include an organic solvent having a boiling point of 120 degrees Celsius or more, and the additive may include a photoinitiator.

In the present invention, the dispersion and the pre-coating mixture may be dispersed and mixed by the shear force by a high shear mixer in a mixed state.

In the present invention, the ITO layer may be stacked on the flexible substrate layer, and the coating layer may be stacked on the ITO layer.

In the present invention, the coating layer includes a first coating layer and a second coating layer, the first coating layer is laminated on the flexible substrate layer, the ITO layer is laminated on the first coating layer, the first layer on the ITO layer Two coating layers may be laminated.

In the flexible transparent conductive electrode structure according to the embodiment of the present invention, a conductive coating layer is inserted on the top, bottom, or top / bottom of the ITO layer to ensure flexibility without electric / optical loss of ITO. An effect can be exhibited and it can utilize for the flexible device which requires a transparent electrode.

The flexible transparent conductive electrode structure according to the exemplary embodiment of the present invention may improve visibility by controlling a component within the coating layer in a wider range so as to increase transmittance.

The flexible transparent conductive electrode structure according to the embodiment of the present invention can increase the applicability and marketability of the actual product by lowering the yellow index (represented by b * value) of the conventional ITO transparent electrode.

The flexible transparent conductive electrode structure according to the embodiment of the present invention can prevent the surface oxidation problem peculiar to the ITO layer when the conductive UV curable coating layer is formed thereon.

The flexible transparent conductive electrode structure according to an embodiment of the present invention can form a coating layer by a wet coating method rather than a vacuum, and thus can produce an electrode structure having the above advantages at a low production cost.

The flexible transparent conductive electrode structure according to the embodiment of the present invention may exhibit an effect of preparing an undercoat and a top coat coating liquid in accordance with the characteristics of the ITO layer.

The flexible transparent conductive electrode structure according to the embodiment of the present invention can control the thickness of the coating layer by controlling the content of PEDOT / PSS solids and the solids content of the curable binder.

The flexible transparent conductive electrode structure according to the embodiment of the present invention may exert an effect of controlling the refractive index of the entire electrode structure by controlling the refractive index of the curable raw material included in the coating layer in a certain range.

The flexible transparent conductive electrode structure according to the exemplary embodiment of the present invention may have an effect of controlling transmittance for each wavelength band by providing a coating layer suitable for an ITO layer having a high refractive index through adjustment of refractive index and thickness.

1 schematically illustrates a configuration of a touch display panel to which a flexible transparent conductive electrode structure according to an embodiment of the present invention can be applied.
2 illustrates a flexible transparent conductive electrode structure according to an embodiment of the present invention.
3 illustrates a flexible transparent conductive electrode structure according to an embodiment of the present invention.
4 illustrates a flexible transparent conductive electrode structure according to an embodiment of the present invention.
FIG. 5 is a view schematically showing the steps of a method for preparing a dispersion comprising poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) according to an embodiment of the present invention.
6 is a view schematically showing the steps of a method for producing a coating composition constituting a coating layer according to an embodiment of the present invention.
7 shows an experimental result of the resistance change rate according to the bending of Comparative Example 1.
Figure 8 shows the experimental results of the resistance change rate according to the bending of Examples 1 to 3.
9 shows experimental results of the transmittance of the transparent electrode layer according to the exemplary embodiments of the present invention.
10 shows experimental results of the resistance change rate according to the bending of Preparation Example 42.
FIG. 11 shows experimental results of a resistance change rate according to bending of Example 13. FIG.
12 illustrates experimental results of transmittance of a transparent electrode layer according to example embodiments.
13 shows experimental results of a resistance change rate according to bending of Example 39. FIG.
14 shows experimental results of a resistance change rate according to bending of Example 41. FIG.
15 shows experimental results of a resistance change rate according to bending of Example 43. FIG.
16 shows experimental results of a resistance change rate according to bending of Example 40. FIG.
17 shows experimental results of a resistance change rate according to bending of Example 42. FIG.

Various embodiments and / or aspects are now disclosed with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. However, it will also be appreciated by one of ordinary skill in the art that this aspect (s) may be practiced without these specific details. The following description and the annexed drawings set forth in detail certain illustrative aspects of the one or more aspects. However, these aspects are exemplary and some of the various methods in the principles of the various aspects may be used and the descriptions described are intended to include all such aspects and their equivalents.

As used herein, “an embodiment”, “an example”, “aspect”, “an example”, etc., may not be construed as having any aspect or design described being better or advantageous than other aspects or designs. .

In addition, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or”. In other words, unless specified otherwise or unambiguously in context, "X uses A or B" is intended to mean one of the natural implicit substitutions. That is, X uses A; X uses B; Or where X uses both A and B, "X uses A or B" may apply to either of these cases. Also, it is to be understood that the term "and / or" as used herein refers to and includes all possible combinations of one or more of the related items listed.

In addition, the terms "comprises" and / or "comprising" mean that such features and / or components are present, but exclude the presence or addition of one or more other features, components, and / or groups thereof. It should be understood that it does not.

In addition, it is to be understood that the singular forms “a” and “an”, including “an”, unless the context clearly indicates otherwise, include plural expressions. Thus, as an example, a “component surface” includes one or more component surfaces.

In addition, terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

In addition, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. As used herein, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein including technical or scientific terms are generally understood by those skilled in the art to which the present invention belongs. Has the same meaning as Terms such as those defined in the commonly used dictionaries should be interpreted as having meanings consistent with the meanings in the context of the related art, and ideally or excessively formal meanings, unless explicitly defined in the embodiments of the present invention. Not interpreted as

1 schematically illustrates a configuration of a touch display panel to which a flexible transparent conductive electrode structure according to an embodiment of the present invention can be applied.

As shown in the present invention, the ITO layer 140 or 170 may be disposed on the polyethylene terephthalate (PET) layer 130 or 160.

Here, in the case of the ITO layer has a problem that the electrical conductivity is changed by itself when a large number of bending is performed, in the case of the flexible transparent conductive electrode structure according to the present invention, a flexible substrate layer, such as PET layer, and By including the coating layer containing the conductive polymer PEDOT / PSS in addition to the structure of the ITO layer, even if the PET layer, the ITO layer, and the coating layer is integrally bent to minimize the change in the electrical conductivity of the ITO layer and the coating layer as a whole And it is possible to improve the optical properties of the entire coating layer.

In the flexible transparent conductive electrode structure according to an embodiment of the present invention, the electrode structure includes a flexible substrate layer, an ITO layer, and a coating layer, wherein the coating layer is a first organic poly (3,4-ethylenedioxythiophene)- Dispersions comprising polystyrenesulfonic acid (PEDOT / PSS) and an organic solvent; And a pre-coating mixture containing an additional organic solvent, a curable binder, and an additive. That is, in one embodiment of the present invention, a flexible transparent conductive electrode structure is realized by adding a specially prepared coating layer to the ITO layer and the flexible substrate layer.

2 illustrates a flexible transparent conductive electrode structure according to an embodiment of the present invention.

The transparent conductive electrode structure shown in FIG. 2 is stacked in the order of the flexible substrate layer 210, the coating layer 220, and the ITO layer 230.

3 illustrates a flexible transparent conductive electrode structure according to an embodiment of the present invention.

The transparent conductive electrode structure shown in FIG. 3 is stacked in the order of the flexible substrate layer 210, the ITO layer 230, and the coating layer 220.

4 illustrates a flexible transparent conductive electrode structure according to an embodiment of the present invention.

The transparent conductive electrode structure shown in FIG. 4 is stacked in the order of the flexible substrate layer 210, the first coating layer 240, the ITO layer 230, and the second coating layer 250.

As described above, the coating layer comprises a dispersion comprising a first organic poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) and an organic solvent; And a pre-coating mixture containing an additional organic solvent, a curable binder, and an additive.

Hereinafter, the method for preparing the dispersion and its components will be described.

Poly (3,4- Ethylenedioxythiophene ) -Polystyrenesulfonic acid ( PEDOT Of PSS Dispersion

FIG. 3 is a view schematically showing the steps of a method for preparing a poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) dispersion according to one embodiment of the present invention.

In the method for preparing a poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) dispersion liquid according to an embodiment of the present invention, the organic solvent and the dispersion aid are mixed to prepare a mixed solvent. Step S100; And a second mixing step (S200) of mixing poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) in a solid powder form with the mixed solvent.

The poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) has an ethylenedioxy group in the form of a ring in the structure of thiophene, and excellent stability to air or heat Have

In addition, due to the electron donating effect of the ethylenedioxy group substituted at positions 3 and 4, the optical bandgap (760 nm to 780 nm or 1.6 eV to 1.7 eV) is lower than that of thiophene. Discoloration is possible and absorption band exists in the infrared region in the oxidation state to ensure transparency.

Preferably, PEDOT / PSS is in the form of a solid powder, it is possible to use a pallet (trade name Orgacon Dry) provided by AGFA of Belgium.

Preferably, the organic solvent is an amide solvent, nitromethane, ketone solvent, alcohol solvent, acetate solvent, aromatic solvent, glycol ether solvent, acrylate monomolecular solvent, amide solvent, acrylate oligomer (Acrylate) oligomer), urethane acrylate polymer (urethane acrylate polymer) or any one of the organic solvent mixed solvent.

More preferably, the organic solvent is N, N-dimethylacetamide (DMA), nitromethane (Nitromethane), methyl ethyl ketone (MEK (Methyl ethyl ketone)), isopropyl alcohol, ethyl alcohol (Ethyl alcohols, n-Butyl acetate, toluene, propylene glycol methyl ether (PGME), propylene glycol methyl ether acetate (PGMEA), hydroxyethyl methacrylate (HEMA), hydroxyyethy acrylate (HEA), and N , N-dimethylformamide (N, N-dimethylform amide (DMF)) or a mixed solvent of the organic solvent.

Most preferably, the organic solvent includes an amide organic solvent, more specifically N, N-dimethylacetamide (DMA).

Typically, solutions containing PEDOT / PSS are mostly in the form of water dispersion in an aqueous solvent rather than an organic solvent. This is because PEDOT / PSS does not dissolve well in organic solvents. However, a solvent containing aqueous dispersed PEDOT / PSS has an acidity of pH 1 to 2, and thus, in the case of a coating layer prepared based on this, there is a disadvantage in that surface damage due to oxidation may be applied to adjacent ITO layers. .

However, in order to dissolve PEDOT / PSS in an organic solvent, PEDOT / PSS is prepared in powder form, amide solvent, nitromethane, ketone solvent, alcohol solvent, acetate solvent, aromatic solvent, glycol ether solvent, acrylic When the rate monomolecular solvent, the amide solvent, the acrylate oligomer, and the urethane acrylate polymer solvent were used, some dissolution could occur, and more preferably, the amide organic solvent was used. When used alone, when nitromethane organic solvent is mixed with an amide organic solvent, N, N-dimethylacetamide (DMA) is used as an amide organic solvent.

However, in spite of the selection of the organic solvent as described above, due to the nature of the PEDOT / PSS powder material, there is a problem that does not completely dissolve in the organic solvent, in the present invention, the physical frictional force after the second mixing step Addition compensates for the dissolution of PEDOT / PSS powders into organic solvents.

Preferably, the method for preparing a poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) dispersion according to an embodiment of the present invention, after the second mixing step, the mixed solvent and poly A high shear mixer step (S300) of dispersing and mixing the mixed solution of (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) by a shear force by a high shear mixer to prepare a second mixture solution (S300); It may include.

As an example of the high shear mixer, a high shear force may be generated using a high rotational force or the like, thereby forming a device including two or more rotors and stators. Such a high shear mixer can be made into a second mixture by making the mixture more homogeneous by using a cavitation phenomenon. Preferably, the high shear mixer is dispersed and mixed for 1 hour or more at a rotational speed of about 6,000 rpm or more with respect to the mixed liquid. At this time, cooling is further performed to maintain the temperature of the mixed solution at 10 ° C.

More preferably, after the high shear mixer step, a bead mill step (S400) for performing the further dispersion of the second mixed solution to the bead mill; may further include. Preferably the bead mill is in the form of a bead mill capable of nano dispersion. By the bead mill step, the second mixed liquid may be more homogeneous and improved in dispersibility by the beads.

As an example of the bead mill, pulverization and dispersion are applied by applying an impact force to the target powder by using beads that are efficient in wet dispersion and wet grinding, for example, zirconia-containing beads, and thus, the second mixed liquid by the bead mill step. Silver can be more homogeneous and improved dispersibility by the beads.

In addition, the beads preferably have a particle diameter of 50 μm to 200 μm, more preferably, beads having a particle size in the range of 80 μm to 120 μm. The rotating speed of the rotating body of the bead mill is preferably used in the range of about 30 to 60Hz frequency. The dispersion thus prepared should be stored in a cold storage device at or below 10 ° C. If stored for a long time at room temperature 20 ℃ or more, the dispersion of PEDOT / PSS shows a cohesive phenomenon, the conductivity may be sharply reduced.

On the other hand, the present invention uses a special dispersion aid to further promote the dissolution of the PEDOT / PSS powder. Specifically, the dispersion aids include a first dispersion aid for assisting in the dispersion of the poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) in the form of a solid powder; And a second dispersion aid for improving conductivity when the dispersion is coated.

Here, the first dispersion aid comprises at least one of amines (Amine), acrylates (Acrylate), and polyols (Polyols), the second dispersion aid is diethylene glycol (Diethylene glycol), Propylene glycol, tetramethylene glycol, sorbitol, N, N-dimethylformamide, ethylene glycol, N, N-dimethylacetamide ( N, N-dimethylacetamide, acetonitrile, dimethylsulfoxide, glycerol, ethylene cyanide, formic acid, propylene carbonate, ethylene ethylene carbonate), 2,6-difluoropyridine, formamide, and N-methylformamide.

Preferably, relative to the total weight of the dispersion, the poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) is 0.5 to 2.0 wt%. When the PEDOT / PSS is less than 0.5 wt%, the electrical conductivity is weakened, and when the PEDOT / PSS is 2.0 wt% or more, the manufacturing cost may be increased. On the other hand, in the present invention, the film thickness of the coating layer can be adjusted by adjusting the weight of poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS).

Preferably, with respect to the total weight of the dispersion, the organic solvent is 80 to 97% by weight. When the organic solvent is less than 80% by weight, the dispersibility may be weakened, and when the organic solvent is 97% or more, electrical conductivity may be weakened.

Preferably, the dispersion aid is 1 to 12% by weight relative to the total weight of the dispersion. More preferably, the first dispersion aid is 0.5 to 2.0% by weight, and the second dispersion aid is 1 to 10% by weight. More preferably, the first dispersion aid is 0.8 to 1.0% by weight, and the second dispersion aid is 1 to 5% by weight. The content of the first dispersion aid and the second dispersion aid can improve the electrical conductivity when the dispersion is used as a coating composition while further dispersing the PEDOT / PSS solid powder.

Hereinafter, a poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) dispersion liquid according to an embodiment of the present invention will be described.

Poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) dispersion according to an embodiment of the present invention is an organic solvent, a dispersion aid, and poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS).

The poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) has an ethylenedioxy group in the form of a ring in the structure of thiophene, and excellent stability to air or heat Have

In addition, due to the electron donating effect of the ethylenedioxy group substituted at positions 3 and 4, the optical bandgap (760 nm to 780 nm or 1.6 eV to 1.7 eV) is lower than that of thiophene. Discoloration is possible and absorption band exists in the infrared region in the oxidation state to ensure transparency.

Preferably, PEDOT / PSS is in the form of a solid powder, it is possible to use a pallet (trade name Orgacon Dry) provided by AGFA of Belgium.

Preferably, poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) in the form of a solid powder is mixed with the mixed solvent in which the organic solvent and the dispersion aid are mixed.

Preferably, the organic solvent is an amide solvent, nitromethane, ketone solvent, alcohol solvent, acetate solvent, aromatic solvent, glycol ether solvent, acrylate monomolecular solvent, amide solvent, acrylate oligomer (Acrylate) oligomer), urethane acrylate polymer (urethane acrylate polymer) or any one of the organic solvent mixed solvent.

More preferably, the organic solvent is N, N-dimethylacetamide (DMA), nitromethane (Nitromethane), methyl ethyl ketone (MEK (Methyl ethyl ketone)), isopropyl alcohol, ethyl alcohol (Ethyl alcohols, n-Butyl acetate, toluene, propylene glycol methyl ether (PGME), propylene glycol methyl ether acetate (PGMEA), hydroxyethyl methacrylate (HEMA), hydroxyyethy acrylate (HEA), and N , N-dimethylformamide (N, N-dimethylform amide (DMF)) or a mixed solvent of the organic solvent.

Most preferably, the organic solvent includes an amide organic solvent, more specifically N, N-dimethylacetamide (DMA).

Preferably, the organic solvent, the dispersing aid and the poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) may be dispersed and mixed by a shearing force by a high shear mixer.

More preferably, after the organic solvent, the dispersing aid and the poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) are dispersed and mixed by shearing force by a high shear mixer, the bead mill Additional distribution can be performed.

Preferably, the dispersion aid comprises a first dispersion aid for aiding the dispersion of the poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) in the form of a solid powder; And a second dispersion aid for improving conductivity when the dispersion is coated.

On the other hand, the first dispersion aid comprises at least one of amines (Amine), acrylates (Acrylate), and polyols (Polyols), the second dispersion aid is diethylene glycol (Diethylene glycol), Propylene glycol, tetramethylene glycol, sorbitol, N, N-dimethylformamide, ethylene glycol, N, N-dimethylacetamide ( N, N-dimethylacetamide, acetonitrile, dimethylsulfoxide, glycerol, ethylene cyanide, formic acid, propylene carbonate, ethylene ethylene carbonate), 2,6-difluoropyridine, formamide, and N-methylformamide.

Wherein the poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) is 0.5 to 2.0% by weight, the organic solvent is 80 to 97% by weight, and the dispersion aid is based on the total weight of the dispersion. Is 1 to 12% by weight.

Preferably, the poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) is 0.5 to 2.0% by weight. When the PEDOT / PSS is less than 0.5 wt%, the electrical conductivity is weakened, and when the PEDOT / PSS is 2.0 wt% or more, the manufacturing cost may be increased.

Preferably, the organic solvent is 80 to 97% by weight based on the total weight of the dispersion. When the organic solvent is less than 80% by weight, the dispersibility may be weakened, and when the organic solvent is 97% or more, electrical conductivity may be weakened.

Preferably, the dispersion aid is 1 to 12% by weight relative to the total weight of the dispersion. More preferably, the first dispersion aid is 0.5 to 2.0% by weight, and the second dispersion aid is 1 to 10% by weight. More preferably, the first dispersion aid is 0.8 to 1.0% by weight, and the second dispersion aid is 1 to 5% by weight. The content of the first dispersion aid and the second dispersion aid can improve the electrical conductivity when the dispersion is used as a coating composition while further dispersing the PEDOT / PSS solid powder.

Poly (3,4- Ethylenedioxythiophene ) -Polystyrenesulfonic acid ( PEDOT Of PSS Coating composition comprising)

6 is a view schematically showing the steps of the manufacturing method of the coating composition according to an embodiment of the present invention.

The method for preparing the coating composition shown in FIG. 6 includes mixing an organic solvent, a dispersing aid, and a poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS), performing dispersion and mixing by shear force, or A dispersion preparation step (S1000) of preparing a dispersion by performing dispersion and mixing by shearing force and then further dispersing in a bead mill;

A first coating mixture preparation step (S2000) of preparing a coating mixture by mixing the prepared dispersion, additional organic solvent, curable binder, and additives; And

It includes; the coating liquid preparation step (S3000) for producing a coating composition by performing the dispersion and mixing by the shear force by the high shear mixer for the coating mixture.

The dispersion preparation step (S1000) corresponds to the steps described in the section “ Poly (3,4- ethylenedioxythiophene ) -polystyrenesulfonic acid (PEDOT / PSS) dispersion ”.

In the dispersion preparation step (S1000), an organic solvent was used to solve the oxidation problem of the ITO layer, and in order to increase the solubility of the PEDOT / PSS powder into the organic solvent, the organic solvent was selected by the physical friction after the organic solvent was selected and the organic solvent was mixed. Further mixing was performed.

In addition, in the present invention, in order to further improve the solubility of the PEDOT / PSS powder into an organic solvent, in the preparation of the coating composition, an additive necessary for forming the coating layer in the preparation of the dispersion (S1000), and a curable binder are not added. To prepare a dispersion, and secondly by adding an additional organic solvent with an additive, a curable binder to perform a first coating mixture preparation step (S2000). In this way the solubility of the PEDOT / PSS into the final coating solution can be maximized.

Preferably, the additional organic solvent is an amide solvent, nitromethane, ketone solvent, alcohol solvent, acetate solvent, aromatic solvent, glycol ether solvent, acrylate monomolecular solvent, amide solvent, acrylate oligomer ( Acrylate oligomer), urethane acrylate polymer (Urethane acrylate polymer) any one or a mixed solvent of the organic solvent.

More preferably, the additional organic solvent is N, N-dimethylacetamide (DMA), nitromethane (Nitromethane), methyl ethyl ketone (MEK (Methyl ethyl ketone)), isopropyl alcohol (Isopropyl alcohol), ethyl alcohol ( Ethyl alcohol, n-Butyl acetate, Toluene, Propylene glycol methyl ether (PGME), Propylene glycol methyl ether acetate (PGMEA), Hydroxyethyl methacrylate (HEMA), Hydroxyyethy acrylate (HEA), and N, N-dimethylformamide (N, N-dimethylform amide (DMF)) or a mixed solvent of the organic solvent.

Most preferably, the additional organic solvent is a high boiling organic solvent having a boiling point of 120 degrees Celsius or more, and more preferably N, N-dimethylformamide (DMF) or N, N -Dimethylacetamide (DMA). In the case of using such a high boiling point organic solvent as an additional organic solvent, since the solvent is not rapidly volatilized during the formation of the coating layer through the coating liquid and stabilizes the molecular orientation of the PEDOT / PSS materials during the curing process, higher conductivity and material of the coating layer are achieved. Safety can be achieved.

Preferably, the first coating mixture preparation step (S2000), a pre-coating mixture preparation step (S2010) for preparing a pre-coating mixture by mixing an additional organic solvent, a curable binder, and additives; And a dispersion mixing step (S2020) of mixing the dispersion with the precoating mixture. In this way, the evident coating liquid is prepared in advance, and then the dispersion liquid can be mixed to ensure better dispersion characteristics.

On the other hand, it is preferable that the mass of the dispersion in the dispersion mixing step has a ratio of 10 to 35% with respect to the weight of the precoating mixture.

Preferably, the additive may include at least one of a defoamer, a leveling agent, a humectant, and an initiator (photoinitiator or thermal initiator), and as such an additive, an alkoxy silane-based, polysiloxane-based, polyether siloxane copolymer , Non-silicone polymer, fluorinated silicone, organo modified polysiloxane, polycarboxylic acid, modified polyether, fatty acid derivative, surfactant, urethane copolymer, nonionic modified fatty acid derivative, polyacrylate, polyether siloxane copolymer, dimethyl Polysiloxanes, ultraviolet crosslinkable silicone polyethers, may be acrylates, ultraviolet crosslinkable silicone acrylates, ultraviolet crosslinkable silicone polyether acrylates, nonionic organic surfactants.

Preferably, the coating composition prepared by the method for preparing the coating composition, poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) 0.1 to 2.0% by weight, dispersion aid 1.05 to 14% by weight %, Organic solvent 60 to 95% by weight, curable binder 1 to 40% by weight, additives 0.01 to 3% by weight.

Herein, the organic solvent corresponds to the weight percentage of the organic solvent included in the initial dispersion and the organic solvent of the final coating composition including the additional organic solvent. As described later, the coating composition may have high transparency and electrical conductivity.

More preferably, the dispersion aid comprises a first dispersion aid for assisting in the dispersion of the poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) in the form of a solid powder; And a second dispersion aid for improving conductivity when the dispersion is coated.

Here, the first dispersion aid comprises at least one of amines (Amine), acrylates (Acrylate), and polyols (Polyols), the second dispersion aid is diethylene glycol (Diethylene glycol), Propylene glycol, tetramethylene glycol, sorbitol, N, N-dimethylformamide, ethylene glycol, N, N-dimethylacetamide ( N, N-dimethylacetamide, acetonitrile, dimethylsulfoxide, glycerol, ethylene cyanide, formic acid, propylene carbonate, ethylene ethylene carbonate), 2,6-difluoropyridine, formamide, and N-methylformamide.

More preferably, the first dispersion aid is 0.05 to 4.0% by weight, the second dispersion aid may be 1 to 10% by weight.

That is, the method for producing a coating liquid composition for forming a coating layer of a flexible transparent conductive electrode structure comprising an ITO layer and a coating layer according to an embodiment of the present invention, an organic solvent, a dispersion aid, and poly (3,4-ethylene Preparing a dispersion by mixing deoxythiophene) -polystyrenesulfonic acid (PEDOT / PSS), dispersing and mixing by shear force, or dispersing and mixing by shear force, and then further dispersing in bead mill. Dispersion manufacturing step (S1000); A first coating mixture preparation step (S2000) of preparing a coating mixture by mixing the prepared dispersion, additional organic solvent, curable binder, and additives; And a coating solution preparation step (S3000) of preparing a coating composition by performing dispersion and mixing by shear force by a high shear mixer with respect to the coating mixture.

Hereinafter, a coating composition including poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) according to an embodiment of the present invention will be described.

The coating composition is a coating liquid composition for forming a coating layer of a flexible transparent conductive electrode structure including an ITO layer and a coating layer, wherein the coating liquid composition is a first organic poly (3,4-ethylenedioxythiophene) -polystyrene sulfonic acid (PEDOT) / PSS) and a dispersion comprising an organic solvent; And a precoating mixture including an additional organic solvent, a curable binder, and an additive.

The coating composition according to an embodiment of the present invention is an organic solvent, a dispersion aid, and a dispersion containing poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS), an additional organic solvent, a curable binder, And a coating composition prepared by mixing the additives and performing dispersion and mixing by shearing force.

Preferably, the coating composition is 0.1 to 2.0% by weight of poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS), 1.05 to 14% by weight of a dispersion aid, 60 to 95% by weight of the final organic solvent. , 1 to 40% by weight of the curable binder, 0.01 to 3% by weight of the additive.

More preferably, the dispersion aid comprises a first dispersion aid for assisting in the dispersion of the poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) in the form of a solid powder; And a second dispersion aid for improving conductivity when the dispersion is coated.

Here, the first dispersion aid comprises at least one of amines (Amine), acrylates (Acrylate), and polyols (Polyols), the second dispersion aid is diethylene glycol (Diethylene glycol), Propylene glycol, tetramethylene glycol, sorbitol, N, N-dimethylformamide, ethylene glycol, N, N-dimethylacetamide ( N, N-dimethylacetamide, acetonitrile, dimethylsulfoxide, glycerol, ethylene cyanide, formic acid, propylene carbonate, ethylene ethylene carbonate), 2,6-difluoropyridine, formamide, and N-methylformamide.

More preferably, the first dispersion aid is 0.05 to 4.0% by weight, the second dispersion aid may be 1 to 10% by weight.

Of the present invention In the embodiments  Experimental results for

1. Preparation of Dispersion

Hereinafter, a dispersion (primary solution) including PEDOT / PSS was prepared according to the following steps.

Production Example  One

(Step 1) After mixing an organic solvent and a dispersing aid, poly (3,4-ethylenedioxythiophene) -polystyrene sulfonic acid (PEDOT / PSS) in the form of a solid powder is mixed and stirred

(Step 2) Perform dispersion and mixing by shear force

(Step 3) further dispersion in the bead mill to prepare a dispersion

[Detail]

Organic Solvent-N, N-dimethylacetamide (DMA) 474g (79wt%), Nitromethane 90g (15wt%)

Dispersion aids 1-24g (4%) of carbonate

Dispersion Aid 2-Amine supplement-6g (1wt%)

PEDOT: PSS Powder-6g (1wt%)

Mixing in Step 1-Perform 1hr

Step 2-Perform 1hr using high shear mixer

Step 3-Perform 2hr with Bead Mill

2. Preparation of Coating Liquid

Production Example  2

A mixture of 0.9 g aromatic hexafunctional urethane acrylate (Sartomer), 0.3 g aliphatic nonafunctional urethane acrylate (Sartomer), 0.3 g Dipentaerythritolhexaacrylate, 10 g Toluene, 3 g Dimehtylformamide (DMF), and 0.1 g polyol are mixed in a 70 ml clear vial. After stirring, the acrylate mixture is sufficiently dissolved. Add 0.1 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 30 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, and the mixture was sufficiently stirred. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  3

A mixture of 4.8g of aromatic hexafunctional urethane acrylate (Sartomer), 1.6g aliphatic nonafunctional urethane acrylate (Sartomer), 1.6g Dipentaerythritolhexaacrylate, 6.5g 2-Propanol, 3g Toluene and 0.1g polyol are mixed in a 70ml clear vial After stirring, the acrylate mixture is sufficiently dissolved. Add 0.1 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 20 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, followed by sufficiently stirring. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  4

A mixture of 0.75 g of aromatic hexafunctional urethane acrylate (manufactured by Sartomer), 0.45 g of aliphatic nonafunctional urethane acrylate (manufactured by Sartomer), and 0.3 g of dipentaerythritolhexaacrylate and 30 g of the conductive polymer dispersion of Preparation Example 1 were mixed and stirred to sufficiently dissolve the acrylate. After mixing 0.08 g of 3-Methacryloxypropyl trimethoxysilane (Shin-Etsu) in the above solution, add 0.1 g of a photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% and stir to dissolve it sufficiently. . 30 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, and the mixture was sufficiently stirred. The solution of the acrylate and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer at 6000 rpm.

Production Example  5

A mixture of 0.5 g Aromatic hexafunctional urethane acrylate (Sartomer), 11.5 g Toluene, 11.5 g Dimethylacetamide, and 0.1 g polyol is mixed in a 70 ml clear vial and stirred to dissolve the acrylate mixture sufficiently. 0.05 g of 3-Methacryloxypropyl trimethoxysilane (Shin-Etsu) and 0.1 g of a photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone in a 1: 1 wt% solution were added to the solution, followed by stirring. The above solution does not proceed further stirring and mixing.

Production Example  6

A mixture of 0.5 g Aromatic hexafunctional urethane acrylate (Sartomer), 10.5 g Toluene, 10.5 g Dimethylacetamide, and 0.03 g polyol is mixed in a 70 ml clear vial and stirred to allow the acrylate mixture to dissolve sufficiently. 0.05 g of 3-Methacryloxypropyl trimethoxysilane (Shin-Etsu) and 0.1 g of a photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone in a 1: 1 wt% solution were added to the solution, followed by stirring. The above solution does not proceed further stirring and mixing.

Production Example  7

A mixture of 0.5 g Aromatic hexafunctional urethane acrylate (Sartomer), 9.6 g Toluene, 9.6 g Dimethylacetamide, and 0.03 g polyol is mixed in a 70 ml clear vial and stirred to allow the acrylate mixture to dissolve sufficiently. 0.05 g of 3-Methacryloxypropyl trimethoxysilane (Shin-Etsu) and 0.1 g of a photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone in a 1: 1 wt% solution were added to the solution, followed by stirring. The above solution does not proceed further stirring and mixing.

Production Example  8

Aromatic hexafunctional urethane acrylate (Sartomer) 0.5g, 2-Hydroxyethyl methacrylate phosphate 0.2g, Toluene 9.6g, Dimethylacetamide 9.6g, and polyol 0.03g are mixed in 70ml clear vial and stirred to dissolve the acrylate mixture sufficiently. do. Add 0.1 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. The above solution does not proceed further stirring and mixing.

Production Example  9

A mixture of 0.5 g Aromatic hexafunctional urethane acrylate (Sartomer), 8.5 g Toluene, 8.5 g Dimethylacetamide, and 0.03 g polyol is mixed in 70 ml clear vial and stirred to dissolve. Add 0.02 g of 3-Methacryloxypropyl trimethoxysilane (Shin-Etsu) to the solution and stir well. Add 0.1 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 6 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, and the mixture was sufficiently stirred. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  10

A mixture of 0.5 g Aromatic hexafunctional urethane acrylate (Sartomer), 7.5 g Toluene, 7.5 g Dimethylacetamide, and 0.03 g polyol is mixed in 70 ml clear vial and stirred to dissolve. Add 0.02 g of 3-Methacryloxypropyl trimethoxysilane (Shin-Etsu) to the solution and stir well. Add 0.1 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 6 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, and the mixture was sufficiently stirred. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  11

A mixture of 0.5 g Aromatic hexafunctional urethane acrylate (Sartomer), 6.5 g Toluene, 6.5 g Dimethylacetamide, and 0.03 g polyol is mixed in 70 ml clear vial and stirred to dissolve. Add 0.02 g of 3-Methacryloxypropyl trimethoxysilane (Shin-Etsu) to the solution and stir well. Add 0.1 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 6 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, and the mixture was sufficiently stirred. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  12

A mixture of 0.5 g Aromatic hexafunctional urethane acrylate (Sartomer), 5.5 g Toluene, 5.5 g Dimethylacetamide, and 0.03 g polyol is mixed in a 70 ml clear vial and stirred to dissolve. Add 0.02 g of 3-Methacryloxypropyl trimethoxysilane (Shin-Etsu) to the solution and stir well. Add 0.1 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 6 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, and the mixture was sufficiently stirred. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  13

A mixture of 0.5 g Aromatic hexafunctional urethane acrylate (Sartomer), 9 g Toluene, 9 g Dimethylacetamide, and 0.03 g polyol is mixed in a 70 ml clear vial and stirred to dissolve. Add 0.02 g of 3-Methacryloxypropyl trimethoxysilane (Shin-Etsu) to the solution and stir well. Add 0.1 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 5 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, and the mixture was sufficiently stirred. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  14

A mixture of 0.5 g of Aromatic hexafunctional urethane acrylate (Sartomer), 8 g of Toluene, 8 g of dimethylacetamide, and 0.03 g of polyol is mixed in a 70 ml clear vial and agitated to dissolve sufficiently. Add 0.02 g of 3-Methacryloxypropyl trimethoxysilane (Shin-Etsu) to the solution and stir well. Add 0.1 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 5 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, and the mixture was sufficiently stirred. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  15

A mixture of 0.5 g Aromatic hexafunctional urethane acrylate (Sartomer), 7 g Toluene, 7 g Dimethylacetamide, and 0.03 g polyol is mixed in 70 ml clear vial and stirred to dissolve. Add 0.02 g of 3-Methacryloxypropyl trimethoxysilane (Shin-Etsu) to the solution and stir well. Add 0.1 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 5 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, and the mixture was sufficiently stirred. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  16

A mixture of 0.5 g Aromatic hexafunctional urethane acrylate (Sartomer), 6 g Toluene, 6 g Dimethylacetamide, and 0.03 g polyol is mixed in 70 ml clear vial and stirred to dissolve. Add 0.02 g of 3-Methacryloxypropyl trimethoxysilane (Shin-Etsu) to the solution and stir well. Add 0.1 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 5 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, and the mixture was sufficiently stirred. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  17

A mixture of 0.5 g Aromatic hexafunctional urethane acrylate (Sartomer), 9.5 g Toluene, 9.5 g Dimethylacetamide, and 0.03 g polyol is mixed in 70 ml clear vial and stirred to dissolve. Add 0.02 g of 3-Methacryloxypropyl trimethoxysilane (Shin-Etsu) to the solution and stir well. Add 0.1 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 4 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, and the mixture was sufficiently stirred. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  18

A mixture of 0.5 g Aromatic hexafunctional urethane acrylate (Sartomer), 8.5 g Toluene, 8.5 g Dimethylacetamide, and 0.03 g polyol is mixed in 70 ml clear vial and stirred to dissolve. Add 0.02 g of 3-Methacryloxypropyl trimethoxysilane (Shin-Etsu) to the solution and stir well. Add 0.1 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 4 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, and the mixture was sufficiently stirred. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  19

A mixture of 0.5 g Aromatic hexafunctional urethane acrylate (Sartomer), 7.5 g Toluene, 7.5 g Dimethylacetamide, and 0.03 g polyol is mixed in 70 ml clear vial and stirred to dissolve. Add 0.02 g of 3-Methacryloxypropyl trimethoxysilane (Shin-Etsu) to the solution and stir well. Add 0.1 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 4 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, and the mixture was sufficiently stirred. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  20

A mixture of 0.5 g Aromatic hexafunctional urethane acrylate (Sartomer), 6.5 g Toluene, 6.5 g Dimethylacetamide, and 0.03 g polyol is mixed in 70 ml clear vial and stirred to dissolve. Add 0.02 g of 3-Methacryloxypropyl trimethoxysilane (Shin-Etsu) to the solution and stir well. Add 0.1 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 4 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, and the mixture was sufficiently stirred. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  21

After mixing a mixture of aliphatic hexafunctional urethane acrylate and 2-Hydroxyethyl methacrylate phosphate at 70wt%: 30wt%, a mixture of 1.23g, 16.1g 2-Propanol, 14.6g Toluene, 5.1g Dimethylacetamide 5.1g and 0.05g polyol was mixed in a 70ml clear vial. Stir to allow sufficient dissolution. Add 0.5 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. The above solution is used for coating without further mixing / stirring.

Production Example  22

Mix 70 g of Aliphatic hexafunctional urethane acrylate and 2-Hydroxyethyl methacrylate phosphate at 70wt%: 30wt%, then mix 0.5g 2-6.2 g of 2-Propanol, 5.6g Toluene, 1.2g Dimethylacetamide, and 0.05g polyol in 70ml clear vial. Stir to allow sufficient dissolution. Add 0.5 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. The above solution is used for coating without further mixing / stirring.

Production Example  23

Mix 70 g of Aliphatic hexafunctional urethane acrylate and 2-Hydroxyethyl methacrylate phosphate at 70wt%: 30wt%, and mix 0.5g of 2-Propanol, 6.8g, Toluene 5.9g, Dimethylacetamide 1.7g, 0.05g polyol in 70ml clear vial. Stir to allow sufficient dissolution. Add 0.5 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 0.5 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, and the mixture was sufficiently stirred. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  24

After mixing 0.5g mixture of Aliphatic hexafunctional urethane acrylate and 2-Hydroxyethyl methacrylate phosphate at 70wt%: 30wt%, mix 0.5g of 2-Propanol, 5.8g, 5.1g Toluene, 1.5g Dimethylacetamide, 0.05g polyol in 70ml clear vial Stir to allow sufficient dissolution. Add 0.5 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 0.5 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, and the mixture was sufficiently stirred. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  25

After mixing 0.5g mixture of Aliphatic hexafunctional urethane acrylate and 2-Hydroxyethyl methacrylate phosphate at 70wt%: 30wt%, mix 0.5g of 2-Propanol, 5.8g, 5.1g Toluene, 1.5g Dimethylacetamide, 0.05g polyol in 70ml clear vial Stir to allow sufficient dissolution. Add 0.5 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 1.0 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, followed by sufficiently stirring. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  26

After mixing 0.5g mixture of Aliphatic hexafunctional urethane acrylate and 2-Hydroxyethyl methacrylate phosphate at 70wt%: 30wt%, mix 0.5g of 2-Propanol, 5.8g, 5.1g Toluene, 1.5g Dimethylacetamide, 0.05g polyol in 70ml clear vial Stir to allow sufficient dissolution. Add 0.5 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 1.5 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, and the mixture was sufficiently stirred. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  27

After mixing 0.5g mixture of Aliphatic hexafunctional urethane acrylate and 2-Hydroxyethyl methacrylate phosphate at 70wt%: 30wt%, mix 0.5g of 2-Propanol, 5.8g, 5.1g Toluene, 1.5g Dimethylacetamide, 0.05g polyol in 70ml clear vial Stir to allow sufficient dissolution. Add 0.5 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 2.5 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, followed by sufficiently stirring. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  28

Mix 70 g of Aliphatic hexafunctional urethane acrylate and 2-Hydroxyethyl methacrylate phosphate at 70wt%: 30wt%, and mix 70g clear vial with 0.5g 2-Propanol 6.1g, 5.3g Toluene, 1.5g Dimethylacetamide, and 0.05g polyol. Stir to allow sufficient dissolution. Add 0.5 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 3.0 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, followed by sufficiently stirring. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  29

Mix 70 g of Aliphatic hexafunctional urethane acrylate and 2-Hydroxyethyl methacrylate phosphate at 70wt%: 30wt%, and mix 0.5g of 2-Propanol, 5.6g, Toluene 4.9g, Dimethylacetamide 1.4g, 0.05g polyol at 70ml clear vial. Stir to allow sufficient dissolution. Add 0.5 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 3.0 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, followed by sufficiently stirring. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  30

Mix 70 g of Aliphatic hexafunctional urethane acrylate and 2-Hydroxyethyl methacrylate phosphate at 70wt%: 30wt%, mix 0.5g of 2-Propanol, 5.1g, Toluene 4.5g, Dimethylacetamide 1.3g, and 0.05g polyol in 70ml clear vial. Stir to allow sufficient dissolution. Add 0.5 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 3.0 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, followed by sufficiently stirring. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  31

After mixing 0.5g mixture of Aliphatic hexafunctional urethane acrylate and 2-Hydroxyethyl methacrylate phosphate at 70wt%: 30wt%, mix 0.5g, 4.7g 2-Propanol, 4.1g Toluene, 1.2g Dimethylacetamide 1.2g, 0.05g polyol in 70ml clear vial Stir to allow sufficient dissolution. Add 0.5 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 3.0 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, followed by sufficiently stirring. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  32

Mix 70 g of Aliphatic hexafunctional urethane acrylate and 2-Hydroxyethyl methacrylate phosphate at 70wt%: 30wt%, and mix 0.5g of 2-Propanol, 5.6g, Toluene 4.9g, Dimethylacetamide 1.4g, 0.05g polyol at 70ml clear vial. Stir to allow sufficient dissolution. Add 0.5 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 4.0 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, followed by sufficiently stirring. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  33

Mix 70 g of Aliphatic hexafunctional urethane acrylate and 2-Hydroxyethyl methacrylate phosphate at 70wt%: 30wt%, mix 0.5g of 2-Propanol, 5.1g, Toluene 4.5g, Dimethylacetamide 1.3g, and 0.05g polyol in 70ml clear vial. Stir to allow sufficient dissolution. Add 0.5 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 4.0 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, followed by sufficiently stirring. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  34

Mix 70 g of Aliphatic hexafunctional urethane acrylate and 2-Hydroxyethyl methacrylate phosphate at 70wt%: 30wt%, and mix 0.5g of 2-Propanol, 4.9g, 4.3g of Toluene, 1.2g of Dimethylacetamide, and 0.05g of polyol in 70ml clear vial. Stir to allow sufficient dissolution. Add 0.5 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 4.0 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, followed by sufficiently stirring. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  35

Mix 70 g of Aliphatic hexafunctional urethane acrylate and 2-Hydroxyethyl methacrylate phosphate at 70wt%: 30wt%, mix 0.5g of 2-Propanol 4.2g, Toluene 3.7g, Dimethylacetamide 1.1g, 0.05g polyol in 70ml clear vial Stir to allow sufficient dissolution. Add 0.5 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 4.0 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, followed by sufficiently stirring. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  36

After mixing 0.5g mixture of Aliphatic hexafunctional urethane acrylate and 2-Hydroxyethyl methacrylate phosphate at 70wt%: 30wt%, mix 0.5g, 4.7g 2-Propanol, 4.1g Toluene, 1.2g Dimethylacetamide 1.2g, 0.05g polyol in 70ml clear vial Stir to allow sufficient dissolution. Add 0.5 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 5.0 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, followed by sufficiently stirring. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  37

Mix 70 g of Aliphatic hexafunctional urethane acrylate and 2-Hydroxyethyl methacrylate phosphate at 70wt%: 30wt%, then mix 0.5g of 2-Propanol 4.4g, Toluene 3.8g, Dimethylacetamide 1.1g, 0.05g polyol in 70ml clear vial Stir to allow sufficient dissolution. Add 0.5 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 5.0 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, followed by sufficiently stirring. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  38

After mixing 0.5g mixture of aliphatic hexafunctional urethane acrylate and 2-Hydroxyethyl methacrylate phosphate at 70wt%: 30wt%, a mixture of 0.5g, 4.2g 2-Propanol, 3.6g Toluene, 1.0g Dimethylacetamide, and 0.05g polyol in 70ml clear vial Stir to allow sufficient dissolution. Add 0.5 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 5.0 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, followed by sufficiently stirring. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

Production Example  39

After mixing 0.5g mixture of Aliphatic hexafunctional urethane acrylate and 2-Hydroxyethyl methacrylate phosphate at 70wt%: 30wt%, 0.5g 2-Propanol 3.7g, Toluene 3.2g, Dimethylacetamide 0.9g, 0.05g polyol in 70ml clear vial Stir to allow sufficient dissolution. Add 0.5 g of photoinitiator mixed with benzophenone and 1-Hydroxy-cyclohexyl-phenyl-ketone at 1: 1wt% to the solution and stir to dissolve sufficiently. 5.0 g of the conductive polymer dispersion liquid of Preparation Example 1 was added to the above solution, followed by sufficiently stirring. The solution containing the acrylate, the solvent, and the conductive polymer dispersion is mixed for 30 minutes using a high shear mixer under a condition of 6000 rpm.

3. Manufacture of Composite Structures

Production Example  40 ( PET layer -Coating layer)

An electrically conductive organic thin film was coated on one side of a 125 μm-thick polyethylene terephthalate (PET) film using the coating solution of Preparation Example 2. Slot die coating was carried out as a coating method, and a dry section of 15M set at 100 ° C. was passed at a speed of 4 m / min. The coating liquid discharge amount of the fluid transfer pump of the slot die was set to 20 Hz. The UV lamp used for photocuring used a standard of 1000 mJ / cm 2.

The properties of the electrically conductive organic thin film formed by the above manufacturing method are shown in the table below.

value Surface resistance 10 ^ 3.2 ohm / sqr Haze 0.73 Transmittance (510 nm) 85.79% Transmittance (550nm) 86.51% thickness <1.0 μm

Production Example  41 ( PET layer - ITO layer )

A transparent conductive thin film was formed on one side of a 125 μm-thick polyethylene terephthalate (PET) film by sputtering the indium tin oxide film. Sn content of the used sputter target was 10%, and an oxygen flow rate of 0.75% was used. Plasma power was 3.5 kW. After the ITO thin film was formed, it was left in a convection oven at 150 ° C. for 1 hour to perform heat treatment. The ITO thin film manufactured using the sputtering technique with an oxygen flow rate of less than 2% has a relatively higher ductility than the other hard ITO thin films.

The characteristics of the transparent conductive thin film formed by the above manufacturing method are shown in the table below.

value Surface resistance 260ohm / sqr Haze 1.49 Transmittance (510 nm) 80.33% Transmittance (550nm) 82.25% thickness <100 nm

Production Example  42 ( PET layer - ITO layer )

Using an ITO target having a tin composition ratio of 7% and sputtering at an oxygen flow rate of 10%, an ITO thin film of about 70 nm was prepared on the PET film surface. The thus prepared ITO thin film has a relatively lower ductility than Preparation Example 41.

The characteristics of the transparent conductive thin film formed by the above manufacturing method are shown in the table below.

value Surface resistance 130ohm / sqr Haze 7.74 Transmittance (510 nm) 86.01% Transmittance (550nm) 87.09% thickness <100 nm

Production Example  43 ( PET layer -Coating layer)

An electrically conductive thin film was coated on one side of a 125 μm-thick polyethylene terephthalate (PET) film using the coating solution of Preparation Example 3. Slot die coating was carried out as a coating method, and a dry section of 15M set at 100 ° C. was passed at a speed of 4 m / min. The coating liquid discharge amount of the fluid transfer pump of the slot die was set to 13 Hz. The UV lamp used for photocuring used a standard of 1000 mJ / cm 2.

The properties of the electrically conductive organic thin film formed by the above manufacturing method are shown in the table below.

value Surface resistance 10 ^ 4.1 ohm / sqr Haze 0.89 Transmittance (510 nm) 88.56% Transmittance (550nm) 88.37% thickness <1 μm

Production Example  44 ( PET layer -Coating layer)

An electrically conductive thin film was coated on one side of a 125 μm-thick polyethylene terephthalate (PET) film using the coating solution of Preparation Example 3. Slot die coating was carried out as a coating method, and a dry section of 15M set at 100 ° C. was passed at a speed of 4 m / min. The coating liquid discharge amount of the fluid transfer pump of the slot die was set to 25 Hz. The UV lamp used for photocuring used a standard of 1000 mJ / cm 2.

The properties of the electrically conductive organic thin film formed by the above manufacturing method are shown in the table below.

value Surface resistance 10 ^ 3.8 ohm / sqr Haze 0.93 Transmittance (510 nm) 86.14% Transmittance (550nm) 85.65% thickness 3 μm

Example  One ( PET layer Coating Layer ITO layer )

The ITO thin film was formed on the upper surface of the electrically conductive organic thin film of Preparation Example 40 in the same manner as the manufacturing method of the ITO thin film applied to Preparation Example 41.

The properties of the composite thin film formed by the above manufacturing method are shown in the table below.

value Surface resistance 230 ohm / sqr Haze 1.01 Transmittance (510 nm) 75.54% Transmittance (550nm) 75.05%

Example  2 ( PET layer - ITO layer -Coating layer)

After coating the UV curable conductive organic thin film of Preparation Example 4 with Meyer bar # 3 bar on the upper surface of the ITO thin film of Preparation Example 41, and dried at 90 ℃ 2 minutes. After curing with ultraviolet light of 400mJ / cm2. The properties of the manufactured composite thin film are shown in the table below.

value Surface resistance 600 ohm / sqr Haze 1.27 Transmittance (510 nm) 85.97% Transmittance (550nm) 83.69%

Here, when the ultraviolet curable conductive organic thin film of Preparation Example 4 is formed on the upper surface of the same ITO thin film as Preparation Example 41, it can be seen that the surface resistance of the composite thin film is greatly reduced in performance. However, it can be seen that light transmittance can be improved by more than 10%.

Example  3 ( PET layer First Coating Layer ITO layer -Coating layer)

The UV curable conductive organic thin film of Preparation Example 4 was gambled with Meyer bar # 3 bar on the upper surface of the composite thin film of Example 1, then coated, and dried at 90 ° C. for 2 minutes. After curing with ultraviolet light of 400mJ / cm2. The properties of the manufactured composite thin film are shown in the table below.

value Surface resistance 250 ohm / sqr Haze 1.59 Transmittance (510 nm) 76.8% Transmittance (550nm) 74.29%

4. Experimental flexibility of ITO film and composite film

Hereinafter, flexibility characteristics were measured using IEC 62715-6-1 as a bending tester measurement standard.

Comparative example  1 and Measurement example  1 to 3

Comparative Example 1 Results of Measuring Flexibility Characteristics of Preparation Example 41

Measurement Example 1 Results of Measuring Flexibility Characteristics of Example 1

Measurement Example 2 Results of Measuring Flexibility Characteristics of Example 2

Measurement Example 3 Results of Measurement of Flexibility Characteristics of Example 3

Specifically, the flexibility characteristics (bending characteristics) of the composite thin films prepared by Examples 1, 2 and 3 were measured using a bending characteristic measuring apparatus manufactured to comply with IEC 62715-6-1. It was.

Flexibility characteristics were set to be bent once per second, resistance was measured by bending once every 60 seconds.

The number of bending was 1200 times, and the change in electrical properties of the composite thin film containing ITO was estimated by measuring the resistance according to the bending, and the resistance change rate according to the following equation was measured. The bending radius of curvature of the specimen was set to 5 mm, and the ITO thin film was installed on the outer surface of the bending surface (Outerbending).

ΔR: resistance change rate (%)

R0: resistance measurement before bending

R: Measured value of resistance during bending

Formula: △ R = (R- R0) / R0

7 shows the experimental results of the resistance change rate according to the bending of Comparative Example 1, Figure 8 shows the experimental results of the resistance change rate according to the bending of Examples 1 to 3.

As shown in FIG. 7 and FIG. 8, in the composite structure including the ITO layer according to the exemplary embodiment of the present invention, the rate of change in surface resistance due to bending is significantly lowered.

In the case of Comparative Example 1 consisting of only a PET layer and an ITO layer without a coating layer according to an embodiment of the present invention, it can be seen that the change rate of resistance due to initial bending of 200 times is greater than 300%. In addition, the final value of the surface resistance change value is about 50%.

On the other hand, provided with a coating layer according to an embodiment of the present invention, in the case of Example 1 in the form of a PET layer-coating layer-ITO layer, the change rate of resistance due to initial 300 times bending is somewhat large and the change in resistance in the bending process appears large.

Meanwhile, Example 2 and Example 3 provided with a coating layer according to an embodiment of the present invention, each having a structure of PET layer-ITO layer-coating layer and PET layer-first coating layer-ITO layer-second coating layer The rate of change of the resistor is also small and shows a stable value with little change in resistance.

That is, in the case of the coating layer according to an embodiment of the present invention, when provided as one layer, it is preferable that the coating layer is provided on the ITO layer, or when the upper and lower surfaces of the ITO layer are provided on both sides, the change in resistance to bending is minimized. It can be seen that.

5. Characteristics of UV curable composite thin film without conductive polymer

Example  4

After coating the coating composition according to Preparation Example 5 using a Meyer bar # 3 bar on the upper surface of the ITO thin film according to Preparation Example 42, drying and heat treatment in a convection oven at 90 ℃. The film specimens subjected to the above procedure were cured under UV light of 400 mJ / cm 2.

Example  5

After coating the coating composition according to Preparation Example 6 using Meyer bar # 3 bar on the upper surface of the ITO thin film according to Preparation Example 42, the drying and heat treatment proceed in a convection oven at 90 ℃. The film specimens subjected to the above procedure were cured under UV light of 400 mJ / cm 2.

Example  6

After coating the coating composition according to Preparation Example 7 using Meyer bar # 3 bar on the upper surface of the ITO thin film according to Preparation Example 42, drying and heat treatment in a convection oven at 90 ℃. The film specimens subjected to the above procedure were cured under UV light of 400 mJ / cm 2.

Example  7

After coating the coating composition according to Preparation Example 8 using a Meyer bar # 3 bar on the upper surface of the ITO thin film according to Preparation Example 42, drying and heat treatment in a convection oven at 90 ℃. The film specimens subjected to the above procedure were cured under UV light of 400 mJ / cm 2.

Comparative example  2

After coating the coating composition according to Preparation Example 5 using Meyer bar # 9 bar on the upper surface of the ITO thin film according to Preparation Example 42, drying and heat treatment in a convection oven at 90 ℃. The film specimens subjected to the above procedure were cured under UV light of 400 mJ / cm 2.

Comparative example  3

After coating the coating composition according to Preparation Example 6 using Meyer bar # 9 bar on the upper surface of the ITO thin film according to Preparation Example 42, drying and heat treatment in a convection oven at 90 ℃. The film specimens subjected to the above procedure were cured under UV light of 400 mJ / cm 2.

Comparative example  4

After coating the coating composition according to Preparation Example 7 using Meyer bar # 9 bar on the upper surface of the ITO thin film according to Preparation Example 42, drying and heat treatment in a convection oven at 90 ℃. The film specimens subjected to the above procedure were cured under UV light of 400 mJ / cm 2.

Comparative example  5

After coating the coating composition according to Preparation Example 8 using Meyer bar # 6 bar on the upper surface of the ITO thin film according to Preparation Example 42, drying and heat treatment in a convection oven at 90 ℃. The film specimens subjected to the above procedure were cured under UV light of 400 mJ / cm 2.

[Experiment result]

Preparation Example 42 corresponds to the reference ITO film specimen, and Examples 4 to 7 were formed on the upper surface of the ITO film specimen, but the coating layer did not contain PEDOT: PSS, which is a conductive polymer. Corresponds to the specimen with the UV cured coating on its top surface.

Comparative Examples 2 to 5 correspond to the thickening of the UV curing coating in Examples 4 to 7, and the experimental results for these are as follows.

Surface resistance
(ohm / sqr) Transmittance (%) 400 nm 450 nm 500 nm 550nm 600 nm Preparation Example 42 128.2 79.47 83.37 85.68 87.09 87.99 Example 4 563.8 81.74 85.47 87.37 88.23 88.74 Example 5 496.5 83.3 86.81 88.23 88.77 89.06 Example 6 245.5 85.85 89.3 90.09 89.93 89.72 Example 7 121.5 86.75 91.31 92.15 91.78 91.16 Comparative Example 2 over range 85.86 90.87 88.84 87.18 87.29 Comparative Example 3 over range 81.64 87.84 90.3 89.76 88.88 Comparative Example 4 over range 82.35 84 89.63 91.46 90.37 Comparative Example 5 over range 88.02 85.11 85.02 86.87 88.65

(over range means over 1000 ohm / sqr)

By forming a UV cured coating layer as shown in the experimental results it can be seen that the improvement in comparison with the reference ITO film specimens in terms of transmittance. However, except for Example 7, it can be seen that the surface resistance of all of the UV cured coating layer alone was increased compared to the reference ITO.

On the other hand, if the UV cured coating on the ITO layer as shown in the above experimental results, if the proper thickness is exceeded, the surface resistance suddenly exists in the appropriate thickness, the surface resistance of the ITO is maintained only to be below a certain thickness Can be.

6. Properties of Composite Thin Films Conductive Materials of Different Configurations (Materials or Solvents)

Comparative example  6

Carbone nanotubes were coated with 0.27% solids, 2-propanol as a solvent, and the coating solution was coated on the upper surface of ITO thin film according to Preparation Example 42 using Meyer bar # 3 bar, and then dried in a convection oven at 120 ° C. And heat treatment.

Comparative example  7

Aqueous dispersion PEDOT: PSS coating liquid having water and methanol as a solvent and having a solid content of 0.58% was coated on the upper surface of the ITO thin film according to Preparation Example 42 using Meyer bar # 6 bar, and then dried and heat treated in a convection oven at 120 ° C. Proceeded.

Surface resistance
(ohm / sqr) Transmittance (%) 400 nm 450 nm 500 nm 550nm 600 nm Comparative Example 6 172.0 74.44 78.55 81.03 82.59 83.66 Comparative Example 7 136.7 89.31 88.83 88.22 87.96 87.96

Comparative Examples 6 and 7 correspond to measured values when a coating layer using a CNT and a water borne PEDOT: PSS material having a different configuration from the present invention is applied to the upper surface of the ITO.

In Comparative Example 6, both the surface resistance and the transmittance showed poor performance compared to the reference ITO, while Comparative Example 7 had a relatively good surface resistance, but the transmittance showed the poor performance compared to Examples 5-7.

7. of the present invention Example  Properties of Composite Thin Films Containing Corresponding Conductive Polymers

Example  8 to 19

According to the table below, the coating compositions of Preparation Examples 9 to 20 were formed by using a Meyer bar on the upper surface of the ITO thin film of Preparation Example 42. After the film formation using the Meyer bar and dried in a 90 ℃ convection oven and cured to a UV light amount of 400mJ / cm2.

Board Coating composition Meyer bar # Example 8 ITO film of Preparation Example 42 Preparation Example 9 3 Example 9 ITO film of Preparation Example 42 Preparation Example 10 3 Example 10 ITO film of Preparation Example 42 Preparation Example 11 3 Example 11 ITO film of Preparation Example 42 Preparation Example 12 3 Example 12 ITO film of Preparation Example 42 Preparation Example 13 3 Example 13 ITO film of Preparation Example 42 Preparation Example 14 3 Example 14 ITO film of Preparation Example 42 Preparation Example 15 3 Example 15 ITO film of Preparation Example 42 Preparation Example 16 3 Example 16 ITO film of Preparation Example 42 Preparation Example 17 3 Example 17 ITO film of Preparation Example 42 Preparation Example 18 3 Example 19 ITO film of Preparation Example 42 Preparation Example 20 3

Measurement results of the specimens of Examples 8 to 19 are shown in the table below.

Surface resistance
(ohm / sqr) Transmittance (%) 400 nm 450 nm 500 nm 550nm 600 nm Example 8 148 86.05 88.96 86.91 85.8 86.47 Example 9 207 81.47 87.04 89.84 90.64 90.51 Example 10 133 81.38 86.98 89.82 90.65 90.54 Example 11 178 84.09 84.26 85.22 86.78 88.08 Example 12 143 85.97 89.68 90.67 90.54 90.15 Example 13 188 81.98 87.38 90.1 90.97 90.89 Example 14 174 81.89 87.17 89.88 90.8 90.77 Example 15 156 83.09 88.4 90.55 90.91 90.55 Example 16 283 82.92 88.31 90.66 91.15 90.85 Example 17 129 83.82 89.06 91.03 91.28 90.85 Example 18 357 85.27 89.84 91.18 91.05 90.58 Example 19 142 81.81 87.42 90.13 90.98 90.9

As can be seen from the characteristics of Examples 8 to 19, when the coating layer corresponding to the UV curable conductive organic thin film is formed on the upper surface of the ITO layer, a large transmittance improvement can be induced, and the surface according to the content of the conductive polymer Although the resistance is implemented differently, as in the case of Examples 10 and 17, it is possible to obtain a transparent conductive thin film having improved transmittance while maintaining the surface resistance value of the ITO thin film.

In addition, since the transmittance may be implemented differently according to the composition ratio of the coating composition, the transmittance may be controlled in forming a coating layer corresponding to the UV curable conductive organic thin film on the upper surface of the ITO thin film corresponding to the ITO layer. Can be.

On the other hand, Figure 9 shows the experimental results of the transmittance of the transparent electrode layer according to the embodiments of the present invention. Specifically, FIG. 9 shows the transmittance graphs of Examples 8 to 19 in comparison with the transmittance graphs of the ITO thin film of Preparation Example 42. As shown in Figure 9, it can be seen that the composite structure corresponding to the embodiment of the present invention exhibits a generally higher transmittance than the reference ITO layer.

8. Experimental flexibility of ITO film and composite film

Measurement example  4

10 shows experimental results of the resistance change rate according to the bending of Preparation Example 42.

The measurement conditions were the same as in Measurement Examples 1, 2 and 3 except that the radius of curvature was 3 mm.

Measurement example  5

11 shows the experimental results of the resistance change rate according to the bending of Example 13

The measurement conditions were the same as in Measurement Examples 1, 2 and 3 except that the radius of curvature was 3 mm.

Compared with the ITO film of Preparation Example 42 corresponding to the reference ITO film, the surface resistance change rate due to bending by coating a UV curable conductive organic thin film using the coating composition of Preparation Example 14 on the upper surface of the ITO according to an embodiment of the present invention It can be seen that the improvement is from 250% to 160%.

9. Of the present invention Example  Properties of Composite Thin Films Containing Corresponding Conductive Polymers

Example  22 to 38

According to the table below, the coating composition of Preparation Examples 23 to 39 was formed on the upper surface of the ITO thin film of Preparation Example 42 using Meyer bar # 6. After the film formation using the Meyer bar and dried in a 90 ℃ convection oven and cured to a UV light amount of 400mJ / cm2.

Board Coating composition Meyer bar # Example 22 ITO film of Preparation Example 42 Preparation Example 23 6 Example 23 ITO film of Preparation Example 42 Preparation Example 24 6 Example 24 ITO film of Preparation Example 42 Preparation Example 25 6 Example 25 ITO film of Preparation Example 42 Preparation Example 26 6 Example 26 ITO film of Preparation Example 42 Preparation Example 27 6 Example 27 ITO film of Preparation Example 42 Preparation Example 28 6 Example 28 ITO film of Preparation Example 42 Preparation Example 29 6 Example 29 ITO film of Preparation Example 42 Preparation Example 30 6 Example 30 ITO film of Preparation Example 42 Preparation Example 31 6 Example 31 ITO film of Preparation Example 42 Preparation Example 32 6 Example 32 ITO film of Preparation Example 42 Preparation Example 33 6 Example 33 ITO film of Preparation Example 42 Preparation Example 34 6 Example 34 ITO film of Preparation Example 42 Preparation 35 6 Example 35 ITO film of Preparation Example 42 Preparation Example 36 6 Example 36 ITO film of Preparation Example 42 Preparation Example 37 6 Example 37 ITO film of Preparation Example 42 Preparation Example 38 6 Example 38 ITO film of Preparation Example 42 Preparation Example 39 6

Measurement results of the specimens of Examples 22 to 38 are shown in the table below.

As in the results of Examples 22 to 38, after the dispersion corresponding to the primary solution was mixed with the organic solvent and the dispersion aid, poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) is mixed and stirred, (step 2) dispersion and mixing by shear force, (step 3) if it is prepared by performing further dispersion in the bead mill, the raw material (UV binder) of the UV curable organic conductive film is changed Even if the resistance of the ITO is maintained, it is possible to manufacture a thin film with improved light transmittance.

That is, in the case of the coating liquid for forming the coating layer according to the present invention, if the dispersion, which is a primary manufacturing product, has the above configuration, then, in order to adjust the characteristics of the coating layer according to circumstances, an additional organic solvent, an ultraviolet curing agent, and an additive may be wider. A wide range of choices can be achieved.

In addition, according to an embodiment of the present invention by adjusting the content of the coating composition can be obtained a composite thin film with improved transmittance.

On the other hand, Figure 12 shows the experimental results of the transmittance of the transparent electrode layer according to the embodiments. As shown in FIG. 12, it can be seen that the transparent electrode layer according to the embodiments of the present invention has high transmittance in the main wavelength range.

10. Of the present invention Example  Properties of Composite Thin Films Containing Corresponding Conductive Polymers

Example  39

An ITO thin film according to Preparation Example 41 was coated on the upper surface of the UV curable conductive organic thin film according to Preparation Example 43.

Example  40

An ITO thin film according to Preparation Example 41 was coated on the upper surface of the UV curable conductive organic thin film according to Preparation Example 44.

Example  41

The coating composition according to 14 was coated on the top surface of the ITO composite thin film according to Example 39 using Meyer bar # 3 bar, and then heat-treated in a convection oven at 90 ° C. for 2 minutes. The heat treated specimens were cured using a UV lamp of 400mJ / cm 2.

Example  42

The coating composition according to 14 was coated on the upper surface of the ITO composite thin film according to Example 40 using Meyer bar # 3 bar, and then heat-treated in a convection oven at 90 ° C. for 2 minutes. The heat treated specimens were cured using a UV lamp of 400mJ / cm 2.

Example  43

The conductive polymer dispersion according to Preparation 1 was mixed 1: 1wt% with Ethanol on the upper surface of the ITO thin film according to Preparation Example 42, and then coated using Meyer bar # 3 bar, followed by heat treatment for 3 minutes in a convection oven at 130 ° C. It was.

The properties of Examples 39 to 43 are shown in the table below.

Surface resistance
(ohm / sqr) Transmittance (%) 400 nm 450 nm 500 nm 550nm 600 nm Example 39 117.2 74.24 79.38 81.33 83.83 85.1 Example 40 114.12 72 77.35 79.72 80.98 81.35 Example 41 149.44 83.6 88.53 88.88 88.54 86.96 Example 42 118.52 79.84 86.07 87 86.15 84.84 Example 43 207.02 78.99 81.82 83.76 85.14 86.1

According to the experimental results of Examples 39 to 43, it can be seen that in the composite structure according to the embodiment of the present invention, the ITO surface resistance may also be improved while improving the light transmittance.

In particular, in the case of Example 42, the surface resistance was also lowered and the light transmittance at 450 nm was also improved (compared to Preparation 42). In addition, compared with Examples 39 and 40, in Examples 41 and 42 in which the UV curable conductive organic film was applied to the upper surface of the ITO, the light transmittance was significantly improved.

11. Of the present invention Of embodiments  Flexibility Characteristic Experiment

Measurement example  6

13 shows experimental results of a resistance change rate according to bending of Example 39. FIG.

The measurement conditions were the same as in Measurement Examples 1, 2 and 3 except that the radius of curvature was 3 mm. In the experimental result of Measurement Example 6, after forming a relatively thin UV-curable conductive organic thin film, it can be seen that when the ITO thin film is coated on its upper surface, flexibility property improvement can be obtained. In addition, it can be seen that it has improved properties than the flexibility of the film of the PET / ITO structure according to Preparation Example 42.

Measurement example  7

14 shows experimental results of a resistance change rate according to bending of Example 41. FIG.

The measurement conditions were the same as in Measurement Examples 1, 2 and 3 except that the radius of curvature was 3 mm. As shown in FIG. 14, after forming a relatively thin UV curable conductive organic thin film, coating an ITO thin film on the upper surface thereof and forming a UV curable conductive organic thin film on the upper surface thereof, improved flexibility and transmittance. It can be seen that an improvement can be obtained.

Measurement example  8

15 shows experimental results of a resistance change rate according to bending of Example 43. FIG.

The measurement conditions were the same as in Measurement Examples 1, 2 and 3 except that the radius of curvature was 3 mm. Improvement of the flexibility properties can also be obtained by directly coating an organic solvent-based conductive polymer dispersion without mixing with the UV curable resin on the upper surface of the ITO thin film according to Preparation Example 42.

Comparative example  8

16 shows experimental results of a resistance change rate according to bending of Example 40. FIG.

The measurement conditions were the same as in Measurement Examples 1, 2 and 3 except that the radius of curvature was 3 mm. As can be seen from the experimental results of FIG. 16, when the ITO thin film was coated after the thick film was coated on the back side of the ITO thin film, the ITO thin film had a greater bending stress under the same curvature radius of measurement, and thus the flexibility characteristics were relatively high. The improvement is weak.

Comparative example  9

17 shows experimental results of a resistance change rate according to bending of Example 42. FIG.

The measurement conditions were the same as in Measurement Examples 1, 2 and 3 except that the radius of curvature was 3 mm. As shown in FIG. 17, in the case where the ITO thin film is coated after the thick film is coated on the rear surface of the ITO thin film, even if an additional conductive organic thin film is coated on the ITO top surface, the ITO thin film has a greater bending stress under the same curvature radius. Since the flexibility characteristics are relatively poor improvement.

In the flexible transparent conductive electrode structure according to the embodiment of the present invention, a conductive coating layer is inserted on the top, bottom, or top / bottom of the ITO layer to ensure flexibility without electric / optical loss of ITO. An effect can be exhibited and it can utilize for the flexible device which requires a transparent electrode.

The flexible transparent conductive electrode structure according to the exemplary embodiment of the present invention may improve visibility by controlling a component within the coating layer in a wider range so as to increase transmittance.

The flexible transparent conductive electrode structure according to the embodiment of the present invention can increase the applicability and marketability of the actual product by lowering the yellow index (represented by b * value) of the conventional ITO transparent electrode.

The flexible transparent conductive electrode structure according to the embodiment of the present invention can prevent the surface oxidation problem peculiar to the ITO layer when the conductive UV-curable coating layer is formed thereon.

The flexible transparent conductive electrode structure according to an embodiment of the present invention can form a coating layer by a wet coating method rather than a vacuum, and thus can produce an electrode structure having the above advantages at a low production cost.

The flexible transparent conductive electrode structure according to the embodiment of the present invention may exhibit an effect of preparing an undercoat and a top coat coating liquid in accordance with the characteristics of the ITO layer.

The flexible transparent conductive electrode structure according to the embodiment of the present invention can control the thickness of the coating layer by controlling the content of PEDOT / PSS solids and the solids content of the curable binder.

The flexible transparent conductive electrode structure according to the embodiment of the present invention may exert an effect of controlling the refractive index of the entire electrode structure by controlling the refractive index of the curable raw material included in the coating layer in a certain range.

The flexible transparent conductive electrode structure according to the exemplary embodiment of the present invention may have an effect of controlling transmittance for each wavelength band by providing a coating layer suitable for an ITO layer having a high refractive index through adjustment of refractive index and thickness.

The description of the presented embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention should not be limited to the embodiments set forth herein but should be construed in the broadest scope consistent with the principles and novel features set forth herein.

Claims (16)

As a flexible transparent conductive electrode structure,
The electrode structure includes a flexible substrate layer, ITO layer, and a coating layer,
The coating layer,
A dispersion comprising a first organopoly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) and an organic solvent; And
A flexible transparent conductive electrode structure, wherein the precoating mixture comprising an additional organic solvent, a curable binder, and an additive is prepared by a mixed coating solution.
The method according to claim 1,
The dispersion comprises an organic solvent, a dispersion aid, and poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS),
A flexible transparent conductive electrode structure prepared by mixing poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) in the form of a solid powder in a mixed solvent in which the organic solvent and the dispersion aid are mixed.
The method according to claim 2,
The organic solvent, the dispersion aid, and poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) are dispersed and mixed by shearing force by a high shear mixer, a flexible transparent conductive electrode structure.
The method according to claim 2,
The organic solvent is a flexible transparent conductive electrode structure comprising an amide organic solvent.
The method according to claim 4,
The organic solvent further comprises nitromethane, flexible transparent conductive electrode structure.
The method according to claim 2,
After the organic solvent, the dispersing aid, and the poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) have been dispersed and mixed by shear force by a high shear mixer, additional dispersion is performed in the bead mill. Flexible transparent conductive electrode structure.
The method according to claim 2,
The dispersion aid comprises a first dispersion aid to assist in the dispersion of the poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) in the form of a solid powder; And
A flexible transparent conductive electrode structure comprising a second dispersion aid for improving the conductivity when the dispersion is coated.
The method according to claim 2,
With respect to the total weight of the dispersion,
The poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) is 0.5 to 2.0 wt%,
The organic solvent is 80 to 97% by weight,
The dispersion aid is 1 to 12% by weight, flexible transparent conductive electrode structure.
The method according to claim 1,
The additional organic solvent has a boiling point of more than 120 degrees Celsius organic solvent,
The additive comprises a photoinitiator, flexible transparent conductive electrode structure.
The method according to claim 1,
The dispersion and the pre-coating mixture is dispersed and mixed by the shear force by a high shear mixer in a mixed state, the flexible transparent conductive electrode structure.
The method according to claim 1,
The ITO layer is laminated on the flexible substrate layer,
The transparent conductive electrode structure, the coating layer is laminated on the ITO layer.
The method according to claim 1,
The coating layer includes a first coating layer and a second coating layer,
The first coating layer is laminated on the flexible substrate layer,
The ITO layer is laminated on the first coating layer,
A flexible transparent conductive electrode structure, wherein the second coating layer is laminated on the ITO layer.
A method of manufacturing a coating liquid composition for forming a coating layer of a flexible transparent conductive electrode structure comprising an ITO layer and a coating layer,
The organic solvent, the dispersion aid, and the poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) are mixed and dispersed and mixed by shear force, or dispersed and mixed by shear force, A dispersion preparation step of preparing a dispersion by performing further dispersion on the bead mill thereafter;
A first coating mixture preparation step of preparing a coating mixture by mixing the prepared dispersion, an additional organic solvent, a curable binder, and an additive; And
And a coating liquid preparation step of preparing a coating composition by performing dispersion and mixing by shear force with a high shear mixer with respect to the coating mixture.
The method according to claim 13,
The organic solvent comprises a amide organic solvent, a method for producing a coating liquid composition.
The method according to claim 13,
The dispersion aid comprises a first dispersion aid to assist in the dispersion of the poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) in the form of a solid powder; And
When the dispersion is coated comprising a second dispersion aid for improving the conductivity, a method for producing a coating liquid composition.
A coating liquid composition for forming a coating layer of a flexible transparent conductive electrode structure comprising an ITO layer and a coating layer,
The coating liquid composition may include a dispersion comprising a first organic poly (3,4-ethylenedioxythiophene) -polystyrenesulfonic acid (PEDOT / PSS) and an organic solvent; And
A coating liquid composition comprising a precoating mixture containing an additional organic solvent, a curable binder, and an additive.

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