KR20150123363A - Coating method using particle alignment and particle coated substrate manufactured by the same - Google Patents

Coating method using particle alignment and particle coated substrate manufactured by the same Download PDF

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Publication number
KR20150123363A
KR20150123363A KR1020140049211A KR20140049211A KR20150123363A KR 20150123363 A KR20150123363 A KR 20150123363A KR 1020140049211 A KR1020140049211 A KR 1020140049211A KR 20140049211 A KR20140049211 A KR 20140049211A KR 20150123363 A KR20150123363 A KR 20150123363A
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South Korea
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gas
substrate
coating
particles
permeable substrate
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KR1020140049211A
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Korean (ko)
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김재호
김효섭
박정균
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아주대학교산학협력단
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Priority to KR1020140049211A priority Critical patent/KR20150123363A/en
Publication of KR20150123363A publication Critical patent/KR20150123363A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials

Abstract

The present invention relates to a coating method using particle alignment, capable of coating a plurality of fine particles at a single layer level with high density by using particle alignment. According to the present invention, a coating method using particle alignment comprises the steps of: (a) forming a coating film by coating a plurality of particles on an upper part of a first substrate having gas penetrability; (b) applying a coating solution on the surface of the first substrate formed with the coating film; (c) covering the coating solution with a second substrate by placing the second substrate on the top of the coating solution; and (d) forming a coating layer attached with the coating film by drying the coating solution.

Description

[0001] The present invention relates to a coating method using particle alignment,

The present invention relates to a coating method using particle alignment and a particle-coated substrate produced thereby, and more particularly, to a particle-coated substrate prepared by using particle alignment to coat a plurality of fine particles at a high density at a single layer level Coating method and a particle-coated substrate produced thereby.

There is a need in the art for techniques to align and coat nanoparticles or micrometer-level fine particles on a substrate. By way of example, such coating techniques may be used in a wide range of applications including storage elements, linear and nonlinear optical elements, optoelectronic components, photomasks, deposition masks, chemical sensors, biochemical sensors, sensors for medical molecular detection, dye-sensitized solar cells, Implant surfaces and the like.

The Langmuir-Blodgett (LB) method (hereinafter "LB method") is well known as a technique for aligning and coating fine particles on a substrate. In the LB method, a solution in which fine particles are dispersed in a solvent is floated on the water surface, and then compressed by a physical method to form a thin film. Such a technique using the LB method is disclosed in, for example, Korean Patent Laid-Open No. 10-2006-2146.

However, in the LB method, temperature, humidity, etc. must be precisely controlled so that the particles can self-assemble in the solvent. It can also affect particle movement, such as on the surface properties of the particles on the substrate (e.g., hydrophobicity, charge characteristics, surface roughness). As a result, the particles may not be uniformly coated on the substrate. That is, there may be many regions where the particles are not coated, and grain boundaries may be formed where the aggregated particles meet, and many defects may be located.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art as described above, and an object of the present invention is to provide a coating method using particle alignment capable of uniformly aligning and coating particles on a substrate by a simple method, To provide a substrate.

Another object of the present invention is to provide a coating method using particle alignment capable of forming a coating film in which a plurality of particles are aligned in a predetermined pattern by a simple method, and a particle coated substrate produced thereby.

It is another object of the present invention to provide a coating method using particle alignment capable of forming a coating film in which different kinds of particles are aligned in a predetermined pattern by a simple method, and a particle coated substrate produced thereby.

According to an aspect of the present invention, there is provided a coating method using particle alignment, comprising: (a) coating a plurality of particles on a first substrate having gas permeability to form a coating film; and (b) (C) applying a coating solution onto the surface of the first substrate on which a coating film is formed, (c) covering the coating solution with the second substrate by raising a second substrate on the coating solution, and (d) Thereby forming an attached coating layer.

According to another aspect of the present invention, there is provided a coating method using particle alignment, comprising: (a) preparing a gas-permeable substrate; (b) coating a plurality of particles on the gas- (C) irradiating light or an active gas toward the gas-permeable substrate with a mask having a mask pattern formed thereon, thereby partially exposing or exposing the surface of the gas-permeable substrate to expose the surface of the gas- The method comprising the steps of: (a) changing the adhesive force of a region irradiated with a light or an active gas; and (d) varying the adhesive force between the irradiated portion of the gas- The particles disposed in the unexposed portion or the exposed portion in the particles of the particles are used for the degree of impregnation of the particles and the degree of adhesion of the particle removing member Permeable substrate; (e) selectively removing the gas permeable substrate from the gas permeable substrate; (e) applying a coating liquid to the surface of the gas permeable substrate having the coating film formed thereon; (f) And (g) evaporating the solvent contained in the coating liquid through the gas permeable substrate and drying the coating, thereby forming a coating layer cured in a solid state by adhering the coating layer.

The coating method using particle alignment according to the present invention forms a coating film by applying a pressure on an adhesive polymer substrate formed on a gas permeable substrate in the form of dry particles without using a solvent or adhesion auxiliary agent and then applying a thermosetting coating layer It can be stably transferred to another transfer substrate. Adhesion In the process of coating particles on a polymer substrate, when the particles come into contact with the adhesive polymer substrate, the surface of the polymer substrate having flexibility is deformed into a form that surrounds a part of the particle due to the influence of the surface tension. As a result, a concave portion corresponding to the particle is formed on the surface of the adhesive polymer substrate to improve the bonding property. Adhesive The reversible nature of the morphological deformation of the surface of the polymer substrate facilitates two-dimensional movement of the particles contacted on the substrate so that the distribution of the particles can be easily rearranged.

The improvement of the particle adhesion through the shape deformation lowers the dependency of the particle surface characteristics and the dependency on the type of the polymer substrate, so that the particles having various surface characteristics can be coated with a single layer. Accordingly, it is not necessary to control the environment such as temperature, humidity, and particle concentration required for forming a coating film, self-assembly and spin coating, and to easily coat particles having various surface characteristics under a wide range of environments and conditions . Single particle coating can be uniformly performed at a high density even in the case of non-electrolytic and hydrophobic materials as well as in cases where the particles are electrically charged or easily hydrogen bonded.

As described above, according to the present invention, the particles are evenly distributed on the adhesive polymer substrate by a simple method to easily form a single-layer coating film having a high density, and it is possible to easily form a coating layer having a high density by using a thermosetting coating layer, It can be stably transferred to the substrate.

In addition, the coating method using the particle alignment according to the present invention increases the adhesion of the exposed part irradiated with light or active gas by partially irradiating light or active gas onto the adhesive polymer substrate using a mask, It is possible to easily form a coating film of various patterns and to stably transfer the coating film to another transfer substrate.

FIGS. 1A to 1F are a step-by-step description of a coating method using particle alignment according to an embodiment of the present invention.
FIGS. 2A to 2F are a step-by-step representation of a coating method using particle alignment according to another embodiment of the present invention.
FIG. 3 shows another embodiment in which a coating film is formed on a transfer substrate using a coating method using particle alignment according to the present invention.
4A to 4D illustrate another embodiment of forming a coating film having a predetermined pattern on the adhesive polymer substrate in the coating method using the particle alignment according to the present invention.
FIG. 5A is a view showing the experimental example 1 of the present invention step by step, and FIGS. 5B and 5C are SEM images of the particle transition substrate in Experimental example 1 of the present invention.
FIGS. 6A, 6B and 6C are photographs showing a stepwise example of Experimental Example 2 of the present invention, and FIG. 6D is an SEM image of a particle transition substrate of Experimental Example 2 of the present invention.
7A and 7B are graphs showing a comparison according to UV treatment time in Experimental Example 3 of the present invention, FIG. 7C is a graph showing a transmittance variation according to UV treatment time, FIG. 7D is a graph showing sharpness according to UV treatment time 7f is a photograph showing the transparency of methylene blue according to the UV treatment time, and Figs. 7g and 7h are graphs showing changes in photocatalyst characteristics according to chemical changes in the substrate. Fig. FIG. 7I is a photograph showing the hardness of the substrate according to the UV treatment time, and FIG. 7J is a photograph comparing the refractive index according to the size change.

Hereinafter, a coating method using particle alignment according to the present invention will be described in detail with reference to the accompanying drawings.

In describing the present invention, the sizes and shapes of the components shown in the drawings may be exaggerated or simplified for clarity and convenience of explanation. In addition, the terms defined in consideration of the configuration and operation of the present invention may be changed according to the intention or custom of the user, the operator. These terms are to be construed in accordance with the meaning and concept consistent with the technical idea of the present invention based on the contents throughout the present specification.

FIGS. 1A to 1F show a coating method using particle alignment according to an embodiment of the present invention in a stepwise manner. Referring to FIGS. 1A to 1F, a coating method using particle alignment according to an embodiment of the present invention will be described in detail. The following is an explanation.

First, as shown in FIG. 1A, a gas-permeable substrate 10 is prepared, a liquid-adhesion polymer is applied on a gas-permeable substrate 10, and the polymer is dried to form an adhesive polymer substrate 20. Here, the gas-permeable substrate 10 has gas-permeable properties, and may be, for example, but not limited to, paper, tissue, cardboard, hardboard, and porous film. Further, like the gas permeable substrate 10, the adhesive polymer substrate 20 also has a characteristic that gas can permeate.

In the embodiment of the present invention, the adhesive polymer substrate 20 includes at least one polymer material such as polydimethylsiloxane (PDMS), linear low density polyethylene (LLPDE), polyvinyl chloride (PVC) and the like. On the other hand, the polymeric material having a dense structure and a flexible structure has gas permeability, and thus the flexible polymeric material can be applied as an adhesive polymer usable in the gas-permeable substrate 10.

The surface of the adhesive polymer substrate 20 formed on the gas-permeable substrate 10 may have a state in which no specific pattern or curvature is formed and the particles 30 (see Fig. 1C (See, for example, US Pat. In the present embodiment, the gas-permeable substrate 10 and the adhesive polymer substrate 20 provided on one surface of the gas-permeable substrate are referred to as a first substrate.

In this embodiment, the adhesive polymer substrate 20 includes various adhesive polymer materials having adherence. Adhesive polymers are generally distinguished from pressure-sensitive adhesives because they have no commonly used tackiness. At least the adhesive polymer has an adhesive force of about 0.6 kg / inch (ASTM D 3330 evaluation) of the pressure-sensitive adhesive of 'Scotch Magic ™ tape'. Further, the adhesive polymer can maintain the solid state (substrate or film, etc.) at room temperature without a separate support.

Herein, the adhesive polymer material generally refers to an organic polymer material containing silicon in a solid state, or adhering property through addition of a plasticizer or surface treatment. Here, the adhesive polymer material is generally characterized in that it is easily deformed by a linear molecular structure and has a low surface tension. The excellent adhesion of such an adhesive polymeric substance is attributed to a soft surface material which is easily deformed in a fine region and a low surface tension. The low surface tension of the adherent polymeric material has the property of spreading broadly on the particle 30 to be adhered (similar to the wetting phenomenon of the solution), and the flexible surface has a tight contact with the particle 30 to be adhered Respectively. Thereby having the property of an adherent polymer that is easily removable on a solid surface reversibly without complementary bonding force.

The surface tension of silicon-based polymer materials such as PDMS, which is a typical adhesion polymer, is close to Teflon (18 dynes / cm), which is the lowest surface tension material, of about 20 to 23 dynes / cm. The surface tension of the adhesive polymer, for example, a silicon-based polymer material, can be controlled by controlling the surface tension of most organic polymers (35 to 50 dynes / cm), natural materials (cotton, 73 dynes / cm), metals (for example, 810 dynes / cm), aluminum (Al, 500 dynes / cm), inorganic oxide (for example, glass (1000 dynes / cm) and iron oxide (1357 dynes / cm).

Subsequently, after the adhesion polymer substrate 20 is formed as described above, a plurality of particles 30 are aligned to form a coating film 32 on the adhesion polymer substrate 20, as shown in FIGS. 1B and 1C . This will be described in more detail as follows.

First, as shown in FIG. 1B, a plurality of dried particles 30 are placed on the adhesive polymer substrate 20. Unlike the present embodiment, the particles dispersed in the solution are hard to be brought into direct contact with the surface of the adhesive polymer, so that the coating can not be performed well. Therefore, only when a small amount of a solution or a volatile solvent is used that is less than the mass of the particles used, the particles may be dried during the coating operation and the coating operation may be possible.

In this embodiment, the particles 30 may include various materials for forming the coating film 32. [ That is, the particles 30 may include a polymer, an inorganic material, a metal, a magnetic material, a semiconductor, a biomaterial, and the like. Also, a mixture of particles having different properties can be used as the particles 30.

Examples of the polymer that can be used as the particles 30 include polystyrene (PS), polymethyl methacrylate (PMMA), polyacrylate, polyvinyl chloride (PVC), polyalpha styrene, polybenzyl methacrylate, Polydiphenyl methacrylate, polycyclohexyl methacrylate, styrene-acrylonitrile copolymer, styrene-methyl methacrylate copolymer, and the like.

Examples of the inorganic material that can be used as the particles 30 include silicon oxide (for example, SiO 2 ), phosphoric acid silver (for example, Ag 3 PO 4 ), titanium oxide (for example, TiO 2 ), iron oxide , Fe 2 O 3 ), zinc oxide, cerium oxide, tin oxide, thallium oxide, barium oxide, aluminum oxide, yttrium oxide, zirconium oxide, copper oxide and nickel oxide.

As the metal that can be used as the particles 30, there are gold, silver, copper, iron, platinum, aluminum, platinum, zinc, cerium, thallium, barium, yttrium, zirconium, tin, titanium, .

Examples of the semiconductor that can be used as the particles 30 include silicon, germanium, or a compound semiconductor (for example, AlP, AlAs, AlSb, GaN, GaP, GaAs, GaSb, InP, InAs, InSb and the like).

Biomaterials that can be used as the particles 30 include particles or surfaces of proteins, peptides, ribonucleic acids (RNA), deoxyribonucleic acids (DNA), polysaccharides, oligosaccharides, lipids, And particles included in the inside. For example, a polymer particle coated with an antibody binding protein, protein A, can be used as the particle 30.

The particles 30 may have a symmetrical shape, an asymmetric shape, an amorphous shape, or a porous shape. For example, the particles 30 may have a spherical shape, an elliptical shape, a hemispherical shape, a cubic shape, a tetrahedron, a pentahedron, a hexahedron, an octahedron, a columnar shape, Among them, the shape of the particles 30 is spherical or elliptical in comparison with other shapes.

Such particles 30 may have an average particle diameter of 10 nm to 100 mu m, and more preferably 10 nm to 50 mu m. If the average particle diameter is less than 10 nm, the coating may be entirely covered by the adhesive polymer substrate 20 during coating, and it may be difficult to coat the particles 30 at a single layer level. Also, when the average particle diameter of the particles 30 is less than 10 nm, the particles may cohere to each other even in the dry state, and it may be difficult for the particles to move individually by the rubbing force. If the average particle size of the particles 30 exceeds 100 탆, the adhesion of the particles may be weak. Here, it is more preferable that the average particle diameter of the particles 30 is 50 nm to 10 占 퐉.

However, the present invention is not limited thereto. The average particle diameter of the particles 30 may vary depending on the material constituting the particles 30, the material constituting the adhesive polymer substrate 20, and the like. Here, when the particles 30 are spherical, the diameter of the particles 30 can be used as the particle diameter. On the other hand, when the particles 30 are not spherical, various measurement methods can be used. For example, the average value of the long axis and the short axis can be used as the particle diameter.

Subsequently, as shown in Fig. 1C, a pressure is applied on the plurality of particles 30 to form a coating film 32. Then, as shown in Fig. As a method of applying pressure to the particles 30, a method of rubbing using a latex, a sponge, a hand, a rubber plate, a plastic plate, a material having a smooth surface, or the like may be used. However, the present invention is not limited thereto and pressure can be applied to the particles 30 by various methods.

In this embodiment, when the particles 30 are placed on the surface of the adhesive polymer substrate 20 and then the pressure is applied, the particles 30 are adhered through the deformation of the adhesive polymer substrate 20. Thereby, a plurality of concave portions 22 corresponding to the particles 30 are formed at the corresponding portions. Therefore, the particles 30 are aligned on the adhesive polymer substrate 20 in the state that the particles 30 are enclosed in the recesses 22.

The recesses 22 are reversible because they are formed by the interaction between the particles and the substrate. That is, it may disappear, and the position may be shifted. For example, if particles move during the rubbing process, the concave portion 22 may disappear due to the elastic restoring force of the adhesive polymer substrate 20, or the concave portion 22 may be changed in position as the particles 30 move have. By this reversible action, the particles 30 can be aligned evenly (here, the "reversible" is a property generated by the flexibility and elastic restoring force of the surface of the adhesive polymer substrate during coating, Including the case of weakening or extinction).

The particles 30 that are not bonded to the adhesive polymer substrate 20 move to a region where the particles 30 of the adhesive polymer substrate 20 are not coated by a rubbing force or the like, The concave portion 22 is formed. Then, the particles 30 are wrapped in the newly formed concave portion 22, and the bonding polymer substrate 20 and the particles 30 are bonded. Through this process, a single-layer level coating film 32 is formed on the adhesion polymer substrate 20 at a high density.

Here, the concave portion 22 may have a shape corresponding to the outer shape of the particle 30 so as to enclose a part of the particle 30. For example, when the particle 30 is spherical, the recess 22 may also have a spherical shape, so that a part of the particle 30 may adhere to the recess 22. The depth L1 of the concave portion 22 may vary depending on the hardness of the adhesive polymer substrate 20, the shape and hardness of the particles 30, environmental factors (e.g., temperature), and the like. That is, as the hardness of the adhesive polymer substrate 20 increases, the depth L1 of the concave portion 22 becomes smaller and the depth L1 of the concave portion 22 increases as the temperature increases.

It is preferable that the ratio (sinking rate) (L1 / D) of the depth L1 of the concave portion 22 to the average particle diameter D of the particles 30 is 0.02 to 0.7. When the ratio L1 / D is less than 0.02, the bonding force between the particles 30 and the adhesive polymer substrate 20 may be insufficient. When the ratio L1 / D is more than 0.7, the particles 30 are coated at a single layer level It can be difficult. It is more preferable that the ratio (L1 / D) is 0.05 to 0.6, more specifically 0.08 to 0.4.

The particles 30 and the adhesive polymer substrate 20 can be more easily bonded to each other when a part of each particle 30 is wrapped by the concave portion 22 formed by the elastic deformation as in the present embodiment . Particles 30 bonded to the adhesive polymer substrate 20 can also be moved to an uncoated portion of the periphery of the adhesive polymer substrate 20 so that the new particles 30 are partially transferred to the hollow recessed portion 22 of the surface of the adhesive polymer substrate 20. [ Lt; / RTI > According to such rearrangement characteristics, the coating film 32 can be coated at a single layer level with a high density. In one example, the particles 30 may be arranged so that the center of each of them is hexagonal.

On the other hand, when the particles 30 are non-spherical (for example, Ag 3 PO 4 ), it is possible to determine whether the particle 30 is at the level of a single layer by various methods. For example, when the ratio of the average value of the thickness of the coating film 32 to the average particle diameter of the upper 10% particles (that is, the particles whose particle diameters are within 10%) of the particles 30 is 1.9 or less, Can be seen.

After the coating film 32 is formed on the adhesive polymer substrate 20, the coating solution 40 is coated on the surface of the adhesive polymer substrate 20 on which the coating film 32 is formed, as shown in FIG. 1D. Here, the coating liquid 40 may be any of coating liquids (hereinafter, referred to as "thermosetting coating liquids") which are cured by drying at room temperature or under heat.

1E, a gas impermeable transfer substrate 45 is placed on the thermosetting coating liquid 40 to form a thermosetting coating liquid 40 on the adherent polymer substrate 20, Is covered with the transfer substrate 45, the thermosetting coating liquid 40 is dried. Here, as the gas impermeable transfer substrate 45, various kinds of substrates such as a glass substrate, a semiconductor substrate, and a polymer substrate can be used. In this embodiment, the gas-impermeable transfer substrate 45 corresponding to the above-described first substrate is referred to as a second substrate.

A method of drying the thermosetting coating liquid 40 naturally while pressing the transfer substrate 45 toward the adhesive polymer substrate 20 or applying heat while pressing the transfer substrate 45 toward the PDMS substrate 20 Can be used.

Specifically, in order to dry the thermosetting coating liquid 40, it is necessary to condition the solvent in the thermosetting coating liquid 40 so that it can be slowly dried without generating air bubbles. For example, such a drying condition may require a temperature condition of room temperature and a drying time of about 12 to 24 hours. In addition, if the thickness of the adhesive polymer substrate 20 is thinner than a certain level or the gas permeable substrate 10 is porous When used as a support, the drying time can be further shortened. Also, drying time can be shortened when applying heat.

When the thermosetting coating solution 40 is dried, the solvent in the thermosetting coating solution 40 sequentially passes through the adhesive polymer substrate 20 and the gas-permeable substrate 10 and is discharged to the outside. Permeable substrate 10 is placed on the bottom surface of another base substrate or the like, the gas can not pass through the lower portion of the gas-permeable substrate 10, 10).

When the solvent in the thermosetting coating liquid 40 is evaporated in this way, a solid thermosetting coating layer 42 is formed by drying the thermosetting coating liquid 40. The thermosetting coating layer 42 is firmly attached to the transfer substrate 45, The coating film 32 formed on the coating layer 42 is firmly attached to the thermosetting coating layer 42 with a bonding force larger than the bonding force with the adhesive polymer substrate 20. [

In this embodiment, it is preferable that the thermosetting coating liquid 40, that is, the coating liquid layer includes a material that does not cause a change in shape of the adhesive polymer substrate 20 and the coating film 32 during the drying process.

If the thermosetting coating layer 42 is separated from the adhesive polymer substrate 20 together with the transfer substrate 45 as shown in FIG. 1F, the coating film 32 is also adhered to the thermosetting coating layer 42, The particle-coated substrate 46 composed of the transfer substrate 45, the thermosetting coating layer 42, and the coating film 32 can be obtained by separating from the polymer substrate 20.

On the other hand, a plurality of concave portions 22 remain on the surface of the adhesive polymer substrate 20 from which the plurality of particles 30 forming the coating film 32 have escaped. The concave portions 22 may disappear have. Thus, after the coating film 32 is transferred to the transfer substrate 45, the thermosetting coating liquid application step, the transfer substrate bonding step, the thermosetting coating liquid drying step, and the coating film transfer step are repeatedly performed, The particle-coated substrate can be repetitively formed with the adhesive polymer substrate 20.

As described above, in the coating method using particle alignment according to the present invention, dry particles 30 are formed on the adhesive polymer substrate 20 without using a solvent on the adhesive polymer substrate 20 formed on the gas- 20 to form a coating film 32. The coating film 32 can be stably transferred to various transfer substrates 45 such as a glass substrate, a semiconductor substrate, and a polymer substrate. Accordingly, when the coating film is formed, the self-assembly of the particles in the solvent is not required. Therefore, the temperature, humidity and the like are not precisely controlled and are not greatly affected by the surface characteristics of the particles. That is, the coating can be uniformly applied at a high density even when the particles are non-chargeable (i.e., charge-neutral) materials as well as when they are chargeable materials. Furthermore, hydrophilic particles as well as hydrophobic particles can be uniformly coated. As described above, according to the present invention, the particles 30 are evenly distributed on the adhesive polymer substrate 20 by a simple method to form a coating layer 32 having a high density at a single layer level, . ≪ / RTI >

FIGS. 2A through 2F are sectional views illustrating a coating method using particle alignment according to another embodiment of the present invention. A coating method using particle alignment according to another embodiment of the present invention will be described with reference to FIGS. 2A to 2F.

First, a gas permeable substrate 10 is prepared, an adhesive polymer substrate 20 is formed thereon, and a primary coating film 32 composed of a plurality of first particles 30 is formed on the adhesive polymer substrate 20 . The concrete method of forming the adhesion polymer substrate 20 and the primary coating film 32 is the same as described above.

2A, a mask 47 having a mask pattern 48 formed thereon is placed on the adhesive polymer substrate 20, and then a light or active gas is irradiated to the adherent polymer substrate (FIG. 2A) 20 are partially exposed in the region where the primary coating film 32 is formed. The surface of the adhesive polymer substrate 20 is covered with the primary coating film 32 composed of the plurality of first particles 30 but the light or active gas to be irradiated is irradiated through the gap between the plurality of first particles 30 It can reach the adhesive polymer substrate 20 and expose the adhesive polymer substrate 20. When the first particles 30 are made of a material capable of transmitting light or active gas, the irradiated light or active gas can reach the adherent polymer substrate 20 through the first particles 30 .

In the present embodiment, for example, when the adhesive polymer substrate 10 is made of PDMS material, the above-described light can be specifically applied to ultraviolet rays, but the present invention is not limited thereto. The visible light or infrared rays Of course.

2B, when the mask 47 is disposed on the adhesive polymer substrate 20 and light or active gas is irradiated to the adhesive polymer substrate 20, the surface of the adhesive polymer substrate 20 The adhesion force of the exposed portion 24 irradiated with light or active gas becomes greater than the adhesion force of the non-exposed portion 25 not irradiated with light or active gas. This is because, due to the irradiation of the light or active gas, the molecular weight is greatly increased due to the reaction such as crosslinking or photodimerization, the solubility is lowered, and the thermal properties and chemical resistance are remarkably improved. In addition, the hardness of the adhesive polymer substrate 20 is changed by irradiation of light or active gas, or the functional groups of the particle surface are bonded. Therefore, the first particles 30 located in the exposure unit 24 can maintain a state of being attached to the adhesive polymer substrate 20 with a stronger bonding force than the first particles 30 located in the non-visible portion 25.

In addition, in the embodiment of the present invention, the changed area of the adhesion and adhesion of the adhesive polymer substrate 20 can be adjusted according to the irradiation time or irradiation intensity of the light or the active gas.

The method of the present invention may further include the step of applying heat to the adhesive polymer substrate 20 before or after the coating film 32 is formed on the adhesive polymer substrate 20. [ Such heating can also control the adhesion of the coating film 32 and the adhesive polymer substrate 20 in a manner similar to the irradiation of the light or active gas described above. Specifically, the adhesive force described above can be adjusted according to the temperature of the heat or the manner of applying the heat .

Subsequently, as shown in FIG. 2C, the particle removing member 50, which has a larger adhering force than that of the unexposed portion 25 of the adhesive polymer substrate 20 and a smaller adhering force than the adhering force of the exposed portion 24, 32). 2D, the first particles 30 disposed in the non-visible portion 25 among the plurality of first particles 30 forming the primary coating layer 32 are separated from the particle removing member 50, And is removed from the adhesive polymer substrate 20. The particle removing member 50 may be formed of a polymer material such as polydimethylsiloxane (PDMS), polyethylene (PE), polyvinylchloride (PVC) or the like having a difference in adhesion and relative adhesion Various kinds of scotch tape may be used. As an example, the particle removing member 50 may be applied with a 2 to 7% low hardness PDMS adhesive tape to utilize the removed particles.

When the first particles 30 located in the unexposed portion 25 of the adhesive polymer substrate 20 are removed using the particle removing member 50 as described above, the exposed polymer substrate 20 is exposed with the exposure unit 24, A first coating layer 32 of a predetermined pattern composed of the first particles 30 located on the first coating layer 32 is provided.

2E, the first particles 30 and the second particles 34 are coated on the surface of the adhesive polymer substrate 20 coated with the plurality of first particles 30 to form the adhesive polymer A secondary coating film 35 is formed on the substrate 20. The method of coating the plurality of second particles 34 is the same as the method of coating the plurality of first particles 30 described above on the adhesive polymer substrate 20, and the specific method thereof is as follows.

First, a plurality of dried second particles 34 are placed on the adhesive polymer substrate 20 having the first coating layer 32 formed thereon. As the second particles 34, polymers, minerals, metals, magnetic materials, semiconductors, biomaterials and the like can be used, and the specific types of these are the same as those described above. Then, a pressure is applied on the plurality of second particles 34 to coat the second particles 34 on the non-visible portion 25 where the first particles 30 are not disposed. The method of applying the pressure to the second particles 34 is the same as the method used for coating the first particles 30 as described above. The method of applying the pressure to the second particles 34 is not limited to the latex, sponge, hand, rubber plate, plastic plate, A rubbing method may be used. The mechanism in which the plurality of second particles 34 are coated on the adhesive polymer substrates 20 and 20 is the same as the principle in which the first particles 30 described above are coated on the adhesive polymer substrate 20.

That is, when the pressure is applied after the second particles 34 are placed on the adhesive polymer substrate 20, the second particles 34 of the pressure-applied portion are attached through the deformation of the adhesive polymer substrate 20, A plurality of second recesses 27 corresponding to the second particles 34 are formed in the corresponding portion of the polymer substrate 20. [ The second particles 34 are aligned on the non-visible portion 25 of the adhesive polymer substrate 20 while the second particles 34 are wrapped around the second recess 27, A secondary coating film 25 composed of a plurality of second particles 34 is formed. Of course, the second particles 34 can be partially aligned and coated on the adhesive polymer substrate 20 while the second particles 34 are partially contained in the empty first recesses 22 in which the first particles 30 have escaped have.

In the present invention, since the concave portion is formed in the adhesive polymer substrate 20 by the elastic deformation, when the particles contained in the concave portion are removed, the concave portion of the surface of the adhesive polymer substrate 20 disappears and can be returned to the smooth surface have. In this state, the second particles 34 are placed on the adhesive polymer substrate 20 in a state in which the first recesses 22 in which the first particles 30 have been accommodated are reversibly disappeared and pressure is applied to the non-visible portions 25 The second particles 34 may be coated while the second recesses 27 corresponding to the second particles 34 are formed.

Of course, when the first particles 30 are removed from the first concave portion 22 after a long time since the first coating film 32 is formed, as described above, the first concave portion 22 or the first concave portion 22, 1 trace of the concave portion 22 may remain on the surface of the adhesive polymer substrate 20. [ In this case, the newly coated second particles 34 are partially wrapped around the first concave portion 22, or the adhesive polymer substrate 20 is pinched at a position corresponding to the first concave portion 22, (Not shown).

After the primary coating film 32 and the secondary coating film 35 are formed on the adhesive polymer substrate 20, the steps of applying the thermosetting coating liquid and bonding the transfer substrate and separating the thermosetting coating layer The first coating layer 32 and the second coating layer 35 formed on the adhesive polymer substrate 20 are transferred to the transfer substrate 45 through the thermosetting coating layer 42 as shown in FIG. ). ≪ / RTI >

The transfer of the coating film formed on the adhesive polymer substrate 20 to the other transfer substrate 45 is carried out in such a manner that the adhesion of the secondary coating film 35 formed on the non-exposed portion 25 of the adhesive polymer substrate 20 to the adhesion polymer substrate 20 It is also possible to transfer only the secondary coating film 35 to another transfer substrate 45 since the bonding force is smaller than the bonding force of the primary coating film 32 formed on the exposure section 24 with the adhesive polymer substrate 20. [ 3, when the bonding force between the adhesive polymer substrate 20 and the particles through the exposure and the bonding force between the thermosetting coating liquid 40 and the particles are appropriately adjusted, the unexposed portion of the adhesive polymer substrate 20 25 can be transferred to the other transfer substrate 45 via the thermosetting coating layer 42. [0060]

In addition, the coating method using the particle aligning method according to the present invention can be applied to various coating methods such as an exposure step, a partial particle removing step, a new particle coating step, a thermosetting coating liquid application and transfer substrate bonding step, a thermosetting coating liquid drying step, It is possible to form various coating films in which various kinds of particles are aligned in a specific pattern on the adhesive polymer substrate 20 and transfer them to another transfer substrate. The alignment pattern of each particle can be variously changed by diversifying the mask pattern 48 of the mask 47 used in the exposure step.

As described above, in the coating method using particle alignment according to another embodiment of the present invention, light or active gas is partially irradiated onto the adhesive polymer substrate 20 by using the mask 47, The adhesive force of the light portion 24 is increased or the adhesive force of the exposure portion 24 is increased by applying heat to the adhesive polymer substrate 20 and the particles 30 located in the non-visible portion 25, Thereby forming a coating film of various patterns and transferring the coating film to the transfer substrate 45.

For example, a plurality of coating films patterned in various forms may be formed on the adhesive polymer substrate 20 and transferred to another transfer substrate 45 as described above. Alternatively, only the patterned secondary coating film 35 may be transferred Transferring to the substrate 45, and transferring only the patterned primary coating film 32 to the other transfer substrate 45. When only the patterned primary coating film 32 is transferred to another transfer substrate 45, a primary coating film 32 patterned on the adhesive polymer substrate 20 is formed as shown in FIG. 2D, The patterned primary coating film 32 alone is transferred to the transfer substrate 45 by performing the steps of applying the thermosetting coating liquid and bonding the electronic substrate and drying the thermosetting coating liquid and separating the thermosetting coating layer without forming the coating film 35. [ . ≪ / RTI >

4A to 4D illustrate another embodiment of forming a coating film having a predetermined pattern on the adhesive polymer substrate in the coating method using the particle alignment according to the present invention. 4A to 4D, a specific method of forming a coating film having a predetermined pattern on the adhesive polymer substrate will be described in detail.

4A, an adhesive polymer substrate 20 is formed on a gas-permeable substrate 10, a mask 52 on which a mask pattern 53 is formed is irradiated with light or an active gas, The surface of the substrate 20 is partially exposed. The method of forming the adhesion polymer substrate 20 and the exposure principle are as described above. In addition, heat may be applied to the adhesive polymer substrate 20 to adjust the adhesion of the particles and the adhesive polymer substrate 20, which will be described later.

4B, when the mask 52 is placed on the adhesive polymer substrate 20 and light or active gas is irradiated to the adhesive polymer substrate 20, the surface of the adhesive polymer substrate 20 The adhesive force of the exposed portion 24 irradiated with light or active gas becomes greater than the adhesive force of the non-exposed portion 25 not irradiated with light or active gas. After the exposure unit 24 is formed by irradiating light or an active gas to the adhesion polymer substrate 20 as shown in FIG. 4C, the plurality of particles 30 are aligned to form a coating film (32).

Here, the kind of the particles 30 and the specific method of forming the coating film 32 with the plurality of particles 30 are the same as described above. In this embodiment, when a plurality of particles 30 are placed on the adhesive polymer substrate 20 on which the exposure unit 24 is formed and the pressure is applied to the adhesive polymer substrate 20, The bonding force of the particles 30 to the adhesive polymer substrate 20 is larger than the bonding force of the particles 30 placed on the non-visible portion 25 with the adhesive polymer substrate 20, (30) is more firmly bonded to the adhesive polymer substrate (20) than the particles (30) located in the non-visible portion (25).

Subsequently, as shown in Fig. 4D, a particle removing member 50 (see Fig. 2C) having an adhering force larger than the adhering force of the unexposed portion 25 of the adhesive polymer substrate 20 and smaller than the adhering force of the exposure portion 24 The particles 30 disposed on the non-visible portion 25 are removed from the plurality of particles 30 forming the coating layer 32 to form a coating layer 32 having a pattern corresponding to the exposed pattern.

Subsequently, the coating film formed of various particles or formed in various patterns can be formed on the other side of the substrate by performing the secondary coating film forming step, the thermosetting coating liquid applying step, the transfer substrate bonding step, the thermosetting coating liquid drying step, And transferred to the substrate.

Hereinafter, the present invention will be described in more detail with reference to experimental examples of the present invention. These experimental examples are given for the purpose of illustrating the present invention in detail, but the present invention is not limited thereto.

<Experimental Example 1>

FIG. 5A is a view showing the experimental example 1 of the present invention step by step, and FIGS. 5B and 5C are SEM images of the particle transition substrate in Experimental example 1 of the present invention. For reference, the image on the right side in FIG. 5C is an enlarged image on the left side.

Referring to FIG. 5A, first, LLDPE (Linear Low-Density Polyethylene) is prepared (S100). Thereafter, the TiO 2 particles are lightly rubbed on one side to remove the sticking property of the LLDPE film (S200). The coated side of the LLDPE wrap is covered with a perforated Petri dish and secured with a fixing rubber band (S300).

100 nm to 200 nm TiO 2 particles are rubbed on the upper surface of the LLDPE wrap, which is tightly wrapped in the Petri dish, and evenly coated (S400).

Silica is sprayed onto the single layer coating surface coated with TiO 2 (S500).

The washed glass substrate was covered with the solution, dried at room temperature for 48 hours, and then heated at 60 DEG C for 3 hours (S600).

After separating the LLDPE lap from the Petri dish by removing the fixing rubber band, the particle transferred glass substrate and the LLDPE lap are separated, and the secondary heating is performed at 150 ° C for 20 minutes (S700).

5b and 5c, it was clearly confirmed that the surface of the transferred particles was not exposed through deliberate damage and impregnated with LLDPE in order to clearly confirm whether or not the particles were exposed after the grain transition.

<Experimental Example 2>

FIGS. 6A, 6B and 6C are photographs showing a stepwise example of Experimental Example 2 of the present invention, and FIG. 6D is an SEM image of a particle transition substrate of Experimental Example 2 of the present invention. For reference, the image on the right side of FIG. 6D is an enlarged view of the image on the left side.

6A, 6B, and 6C, the paper is cut to fit the size of the petri dish. Then, the paper is dipped into a Petri dish at a weight of 20% by weight of a non-cured Sylgard 184 (Dow Corning, USA) The PDMS solution containing the negative curing agent was poured and then paper was covered thereon. Thereafter, it was cured by drying at room temperature for 10 hours and heating at 60 DEG C for 3 hours.

The PDMS paper was heated at 200 ° C for 3 hours to coat the coherent particles with a single layer.

Such a rubbed 100nm ~ 200nm TiO 2 particles with the PDMS Paper heat treatment after coating was uniformly Silicate glass film coating is sprayed enough to the high-CN Pisa, which is applied to the surface of EtOH in a single layer coating the sheet with the TiO 2 is coated.

The PDMS paper was placed on a porous plate and the washed glass was coated on the surface of the PDMS paper coated with the glass coating agent. Then, the EtOH solution was evaporated by drying at room temperature for 10 hours and first heating for 3 hours at 60 ° C. After the PDMS paper was separated from the glass, the glass substrate on which the particles were transferred was subjected to secondary heating at 200 ° C for 1 hour to improve the durability of the substrate.

Thereafter, the surface of the transferred particles was observed through deliberate damage to clearly see whether the particles were exposed after the particle transfer process. Referring to the SEM image of FIG. 6D, it can be seen that the surface of the particles is exposed differently from the coating of the LLDPE when PDMS is used.

<Experimental Example 3>

First, the paper was cut to the size of a Petri dish, and then a PDMS solution including a curing agent containing 20% by weight of a non-cured Sylgard 184 (Dow Corning, USA) product was poured on a Petri dish, .

Thereafter, it was cured by drying at room temperature for 10 hours and heating at 60 DEG C for 3 hours. The cured PDMS paper was treated with 185 nm UV for 0, 15, 30 and 60 minutes, respectively.

The UV treated PDMS paper was rubbed with 50 nm to 150 nm TiO 2 particles and evenly sprayed on the single layer coating surface coated with TiO 2 on the coating film of Hai Cian Pisa coated with silicate on EtOH.

The PDMS paper was coated on the porous plate and the washed glass was covered with the glass film coating agent. Then, the EtOH solution was evaporated by drying for 10 hours at room temperature and for 3 hours at 60 ° C. for 1 hour.

After the PDMS paper was separated from the glass, the glass substrate on which the particles were transferred was subjected to secondary heating at 200 ° C for 1 hour to improve the durability of the substrate.

It can be seen from FIG. 7A that the degree of impregnation of TiO 2 particles varies with the treatment time of UV, and it can be seen that the surface hardness of the PDMS substrate increases with UV treatment time and is proportional to time.

In FIG. 7B, it can be seen that the uniformity of the size of TiO 2 coated on the substrate varies with the time of UV treatment for 0 minute, 15 minutes, 30 minutes, and 60 minutes. This is because the surface hardness of the PDMS substrate is increased due to the UV / O treatment time, and the adhesion of large particles to the substrate is reduced, so that relatively small particles are preferentially adhered.

In FIG. 7C, the graph shows that the transmittance of light increases as the UV treatment time becomes longer. Also, it can be seen from FIG. 7D that as the UV treatment time becomes longer, the letters are clearly displayed.

FIG. 7E is a graph showing the results of decomposition of methylene blue to examine photocatalytic properties. FIG. Methylene blue uses the property of losing the initial blue color and becoming transparent by breaking the bond by the photocatalytic effect. The graph of FIG. 7E and FIG. 7F show that the longer the UV treatment time is, the more transparent Methylene blue is, and the TiO 2 has a photocatalytic effect.

FIGS. 7g and 7h show changes in photocatalyst characteristics depending on chemical changes in the substrate. When the acidic group was exposed to distilled water, acidic HCl and basic NaOH, the properties of the photocatalyst did not disappear Can be confirmed.

7I shows the hardness of the substrate. In the LBL method, the surface of the substrate was damaged even at a low pencil hardness. However, in the case of the substrate prepared through the above-described experimental method, the pencil hardness was not damaged even at 9H Can be confirmed.

7J shows that the coating can be applied not only on a small area but also on a size of 40 cm x 40 cm. When the coated glass is actually observed, it can be seen that there is no difference in refractive index between the glass and the glass.

The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art can improve and modify the technical idea of the present invention in various forms. Accordingly, these modifications and variations are intended to fall within the scope of the present invention as long as it is obvious to those skilled in the art.

10: gas-permeable substrate 20: PDMS substrate
22, 27: concave portion 24:
25: non-visible portion 30, 34: particle
32, 35: Coating film 40: Thermosetting coating liquid
42: thermosetting coating layer 45: transfer substrate
47, 52: mask 50: particle removing member

Claims (21)

  1. (a) forming a coating film by coating a plurality of particles on a first substrate having gas permeability;
    (b) applying a coating liquid to a surface of the first substrate on which the coating film is formed;
    (c) placing a second substrate on the coating liquid to cover the coating liquid with the second substrate; And
    (d) drying the coating solution to form a coating layer on which the coating film is adhered.
  2. The method according to claim 1,
    After the step (d)
    (e) separating the coating layer having the coating film from the first substrate, and transferring the coating film to the second substrate via the coating layer.
  3. The method according to claim 1,
    Further comprising the step of irradiating light or an active gas toward the first substrate before or after forming the coating film on the first substrate,
    Wherein an area where the adhesive force and the adhesive force of the first substrate are changed according to the irradiation time or irradiation intensity of the light or active gas can be adjusted.
  4. The method according to claim 1,
    Further comprising the step of applying heat to the first substrate before forming the coating film on the first substrate or after forming the coating film,
    Wherein the adhesion force between the coating film and the first substrate is adjustable according to a temperature or a heat application method of the heat.
  5. The method according to claim 1,
    Wherein the first substrate includes a gas permeable substrate and an adhesive polymer substrate provided on one surface of the gas permeable substrate,
    Wherein the coating film is provided on the adhesive polymer substrate.
  6. The method according to claim 1,
    Wherein, in the step (a), the plurality of particles are rubbed and pressure is applied to coat the first substrate.
  7. The method according to claim 1,
    Wherein in the step (a), the plurality of particles directly contact the first substrate.
  8. The method according to claim 1,
    Wherein in the step (a), the coating layer is formed by coating the plurality of particles with a single layer.
  9. The method according to claim 1,
    Wherein the ratio of the average value of the thickness of the coating film to the average particle diameter of the upper 10% particles among the plurality of particles is 1.9 or less when the plurality of particles are non-spherical.
  10. The method according to claim 1,
    Wherein a surface of the first substrate is provided with a plurality of concave portions corresponding to the plurality of particles respectively and the depth ratio of the concave portions to the average particle diameter of the particles is 0.02 to 0.7. Way.
  11. 11. The method of claim 10,
    Characterized in that the recess is reversible.
  12. The method according to claim 1,
    Wherein the second substrate is a gas impermeable substrate.
  13. The method according to claim 1,
    In the step (d), the solvent contained in the coating solution permeates through the first substrate and is discharged to the outside, whereby the coating solution is cured into the coating layer in a solid state.
  14. A gas permeable substrate;
    An adhesive polymer substrate formed on the gas-permeable substrate and capable of transmitting a gas; And
    And a coating film formed by coating a plurality of particles on the surface of the adhesive polymer substrate with a single layer.
  15. 15. The method of claim 14,
    Wherein the gas permeable substrate comprises at least one of paper, tissue, cardboard, hardboard, and porous film.
  16. 15. The method of claim 14,
    Wherein the adhesive polymer substrate comprises at least one of polydimethylsiloxane (PDMS), polyethylene (PE), and polyvinylchloride (PVC).
  17. 15. The method of claim 14,
    Further comprising a coating liquid layer coated on the surface of the adhesive polymer substrate on which the coating film is formed,
    Wherein the coating liquid layer is cured through drying performed at room temperature or under heat.
  18. (a) preparing a gas permeable substrate;
    (b) coating a plurality of particles on the gas-permeable substrate to form a coating layer;
    (c) irradiating light or an active gas toward the gas-permeable substrate with a mask having a mask pattern formed thereon to partially expose or expose the surface of the gas-permeable substrate to irradiate light or active gas on the surface of the gas- Changing the adherence of the region to be imaged;
    (d) using a difference in adhesion between the irradiated portion of the gas-permeable substrate and the irradiated portion of the gas or the non-irradiated portion of the substrate, the particles disposed on the non-visible portion or the exposed portion of the plurality of particles forming the coating film, And removing the particles from the gas permeable substrate using a degree of adhesion of the particle removing member;
    (e) applying a coating liquid to the surface of the gas-permeable substrate on which the coating film is formed;
    (f) depositing a gas-impermeable substrate on the coating liquid to cover the coating liquid; And
    (g) coating the solvent contained in the coating solution on the gas permeable substrate to evaporate and dry the coating to form a solidified coating layer with the coating film adhered thereon .
  19. (a) preparing a gas permeable substrate;
    (b) coating a plurality of first particles on the gas-permeable substrate to form a first coating layer;
    (c) irradiating light or an active gas toward the gas-permeable substrate with a mask having a mask pattern formed thereon, thereby partially exposing or exposing an area on the surface of the gas-permeable substrate where the primary coating film is formed to expose the gas- Changing the adhering force of the irradiated region of light or active gas;
    (d) a plurality of first particles which form the primary coating layer by using a difference in adhesion between a light-irradiated portion of the gas-permeable substrate and an unexposed portion of the gas-permeable substrate, Selectively removing the first particles from the gas permeable substrate using the degree of impregnation of the particles and the degree of adhesion of the particle removing member;
    (e) coating a plurality of second particles on a region of the gas-permeable substrate where the first particles are removed to form a second coating layer;
    (f) applying a coating solution to the surface of the gas-permeable substrate on which the primary coating layer and the secondary coating layer are formed;
    (g) covering the coating liquid by placing a gas-impermeable substrate on the coating liquid; And
    (h) forming a coating layer which is cured in a solid state by adhering at least one of the primary coating layer and the secondary coating layer by evaporating a solvent contained in the coating liquid through the gas permeable substrate and drying the layer; &Lt; / RTI &gt;
  20. (a) preparing a gas permeable substrate;
    (b) irradiating light or an active gas toward the gas-permeable substrate with a mask having a mask pattern formed thereon to partially expose or expose the surface of the gas-permeable substrate to irradiate light or active gas on the surface of the gas- Changing the adhesive force of the area;
    (c) coating a plurality of particles on the gas-permeable substrate to form a coating layer;
    (d) using a difference in adhesion between the irradiated portion of the gas-permeable substrate and the irradiated portion of the gas or the non-irradiated portion of the gas-permeable substrate, the particles disposed on the non-visible portion or the exposed portion of the plurality of particles forming the coating film, And removing the particles from the gas permeable substrate using a degree of adhesion of the particle removing member;
    (e) applying a coating liquid to the surface of the gas-permeable substrate on which the coating film is formed;
    (f) depositing a gas-impermeable substrate on the coating liquid to cover the coating liquid; And
    (g) coating the solvent contained in the coating solution on the gas permeable substrate to evaporate and dry the coating to form a solidified coating layer with the coating film adhered thereon .
  21. (a) preparing a gas permeable substrate;
    (b) irradiating light or an active gas toward the gas-permeable substrate with a mask having a mask pattern formed thereon to partially expose or expose the surface of the gas-permeable substrate to irradiate light or active gas on the surface of the gas- Changing the adhesive force of the area;
    (c) coating a plurality of first particles on the gas-permeable substrate to form a first coating layer;
    (d) a particle in the non-visible portion or the exposed portion in the plurality of first particles forming the primary coating film by using the difference in adhesion between the light-irradiated portion of the gas-permeable substrate and the non- Selectively removing from the gas permeable substrate using the degree of impregnation of the particles and the degree of adhesion of the particle removing member;
    (e) coating a plurality of second particles on a region of the gas-permeable substrate where the first particles are removed to form a second coating layer;
    (f) applying a coating solution to the surface of the gas-permeable substrate on which the primary coating layer and the secondary coating layer are formed;
    (g) covering the coating liquid by placing a gas-impermeable substrate on the coating liquid; And
    (h) forming a coating layer which is cured in a solid state by adhering at least one of the primary coating layer and the secondary coating layer by evaporating a solvent contained in the coating liquid through the gas permeable substrate and drying the layer; &Lt; / RTI &gt;
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EP0892766A1 (en) * 1996-04-10 1999-01-27 Dsm N.V. A method of increasing the adhesion between radiation-cured, inner primary coatings and optical glass fibers
KR100508337B1 (en) * 2003-06-27 2005-08-17 한국과학기술원 Fabrication Method of Patterned Polymer Film with Nanometer Scale
KR100930924B1 (en) * 2008-01-09 2009-12-10 고려대학교 산학협력단 Nanospheres mold in the form of nano-imprint template production method for single-layer polymeric nanospheres pattern forming method and the application method using a single layer nanospheres pattern using the same.
WO2010117102A1 (en) * 2009-04-09 2010-10-14 서강대학교 산학협력단 Method for aligning colloidal crystals as single crystals
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