KR102288729B1 - Smart window and preparing method thereof - Google Patents

Abstract

The present invention relates to a smart window and a method for manufacturing the same, and more particularly, to a substrate; conductive nano barrier ribs formed on the substrate at predetermined intervals; conductive light-shielding particles filled in at least a portion between the nano-barriers; and an electrode for applying a voltage to the nano-barrier, by including, to a smart window capable of implementing excellent visibility by remarkably improving transmittance and a method of manufacturing the same.

Description

Smart window and manufacturing method thereof

The present invention relates to a smart window and a method for manufacturing the same.

In general, a smart window refers to a window in which the amount of light or heat passing through is controlled by changing the transmittance of light when a voltage is applied, which is formed to be turned on and off. That is, the smart window is provided to be changed to a transparent, opaque, or translucent state by a voltage, and is also called variable transmittance glass, dimming glass, or smart glass.

In addition, the smart window can be used as a partition of an indoor space or can be used as a skylight placed in an opening of a building, and can be used as a highway sign, bulletin board, scoreboard, clock or advertisement screen. It can also be used as windows or sunroofs of ships or trains.

Smart windows are liquid crystal (LCD), polarized particle dispersion (SPD: Suspended Particle Display), electrochromic (EC), photochromic (PC: photochromic glass) and Thermochromic (LTC: Thermo-chromic glass) is classified. As smart windows come into the spotlight as the next-generation high-functionality and high-value-added product, advanced companies and related research institutes are investing huge budgets to promote development.

The conventional smart window is usually manufactured using a polymer dispersed liquid crystal (PDLC), and by injecting a polymer dispersed liquid crystal between a pair of glass substrates, a fine liquid crystal (LC) in a polymer matrix is formed. It has a distributed structure. However, in the case of a smart window using a liquid crystal, there is a problem in that power consumption is large when driven for a long period of time.

In addition, in the case of the conventional polarized particle dispersed smart window technology, there is a problem in that the thickness is increased or the transmission efficiency is low by using a transparent electrode having a multilayer structure.

Korean Patent Application Laid-Open No. 2013-0037600 discloses a smart window technology including a polymer dispersed liquid crystal device, but does not provide an alternative to the above-mentioned problems.

Korean Patent Publication No. 2013-0037600

An object of the present invention is to provide a smart window capable of improving the transmittance of the smart window.

An object of the present invention is to provide a method for manufacturing the smart window.

1. Substrate;

conductive nano barrier ribs formed on the substrate at predetermined intervals;

conductive light-shielding particles filled in at least a portion between the nano-barriers; and

A smart window comprising a; electrode for applying a voltage to the nano-barrier.

2. The smart window according to the above 1, wherein the nano barrier rib has a thickness of 5 to 200 nm.

3. The smart window according to the above 1, wherein the nano barrier ribs form a predetermined pattern.

4. The smart window according to the above 3, wherein the opening is an opening pattern having a circle, an ellipse, a triangle, a square, a pentagon, a hexagon, an octagon, or a mixed figure shape thereof.

5. The smart window according to the above 1, wherein the nano-barrier has a height of 100 to 8,000 nm.

6. The above 1, wherein the nano barrier ribs are In, Co, Si, Ge, Au, Pd, Pt, Ru, Re, Mg, Zn, Hf, Ta, Rh, Ir, W, Ti, Ag, Cr, Mo , at least one metal selected from the group consisting of Nb, Al, Ni, Cu, and WTi; or indium tin oxide (ITO), indium zinc oxide (IZO), indium zinc tin oxide (IZTO), aluminum zinc oxide (AZO), gallium zinc oxide (GZO), florin tin oxide (FTO), indium tin oxide-silver- Indium tin oxide (ITO-Ag-ITO), indium zinc oxide-silver-indium zinc oxide (IZO-Ag-IZO), indium zinc tin oxide-silver-indium zinc tin oxide (IZTO-Ag-IZTO) and aluminum zinc oxide -Silver-Aluminum Zinc Oxide (AZO-Ag-AZO), a smart window comprising one or more metal oxides selected from the group consisting of.

7. The method of 1 above, wherein the conductive light-shielding particles include carbon black, C.I. At least one selected from the group consisting of pigment black 7 and polar nano-dye, a smart window.

8. The smart window according to the above 1, wherein when the electrode applies a voltage to the conductive nano-barrier, the conductive light-shielding particles are attached to the side of the conductive nano-barrier.

9. The smart window of 1 above, further comprising a polymer pattern in at least a portion between the conductive nano-barriers.

10. An image display device including the smart window of 1 to 9 above.

11. forming a polymer pattern on the substrate;

forming a conductive layer on the substrate on which the polymer pattern is formed;

etching the conductive layer by ion milling, and forming a nano-thick coating layer on a side surface of the polymer pattern to form nano partition walls;

coating a conductive light-shielding particle solution on the substrate on which the nano barrier ribs are formed; and

Connecting an electrode to the conductive nano barrier rib; Containing, a method of manufacturing a smart window.

12. The method of manufacturing a smart window according to 11 above, wherein the nano barrier rib has a thickness of 5 to 200 nm.

13. The method of manufacturing a smart window according to 11 above, wherein the polymer pattern is formed by a nano-imprinting method.

14. The method of manufacturing a smart window according to the above 11, wherein the coating layer is formed by attaching conductive particles torn out by ion milling to the side surface of the polymer pattern.

15. In the above 11, the conductive layer is In, Co, Si, Ge, Au, Pd, Pt, Ru, Re, Mg, Zn, Hf, Ta, Rh, Ir, W, Ti, Ag, Cr, Mo , at least one metal selected from the group consisting of Nb, Al, Ni, Cu, and WTi; or indium tin oxide (ITO), indium zinc oxide (IZO), indium zinc tin oxide (IZTO), aluminum zinc oxide (AZO), gallium zinc oxide (GZO), florin tin oxide (FTO), indium tin oxide-silver- Indium tin oxide (ITO-Ag-ITO), indium zinc oxide-silver-indium zinc oxide (IZO-Ag-IZO), indium zinc tin oxide-silver-indium zinc tin oxide (IZTO-Ag-IZTO) and aluminum zinc oxide -Silver-Aluminum zinc oxide (AZO-Ag-AZO) will include one or more metal oxides selected from the group consisting of, a method of manufacturing a smart window.

16. The method of manufacturing a smart window according to the above 11, wherein the ion milling is performed by accelerating the plasma to 100ev to 1500eV under a pressure of ^{10 - 5} Torr to 10 ^{- 3 Torr.}

17. The method of manufacturing a smart window according to the above 11, further comprising the step of removing the polymer pattern.

The smart window of the present invention can significantly improve the transmittance of the smart window by including the conductive nano barrier ribs.

1 is a schematic cross-sectional view of a case in which no voltage is applied to a smart window according to an embodiment of the present invention.
2 is a schematic cross-sectional view of a case in which a voltage is applied to a smart window according to an embodiment of the present invention.
3 to 4 are schematic perspective views of conductive nano barrier ribs formed on a substrate in a smart window according to an embodiment of the present invention, respectively.
5 is a schematic process diagram of a method for manufacturing a smart window according to an embodiment of the present invention.

The present invention provides an opposing substrate; conductive nano barrier ribs formed on the substrate at predetermined intervals; conductive light-shielding particles filled in at least a portion between the nano-barriers; and an electrode for applying a voltage to the nano-barrier, by including, to a smart window capable of implementing excellent visibility by remarkably improving transmittance and a method of manufacturing the same.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, the following drawings attached to the present specification illustrate preferred embodiments of the present invention, and serve to further understand the technical spirit of the present invention together with the above-described contents of the present invention, so the present invention is described in such drawings It should not be construed as being limited only to the matters.

As shown in FIG. 1 , the smart window of the present invention is formed on at least a portion of the conductive nano partition wall 200 and the conductive nano partition wall 200 formed at a predetermined distance between the substrate 100 and the substrate 100 . It includes the filled conductive light shielding particles 500 and an electrode (not shown) for applying a voltage to the nano barrier ribs.

The substrate 100 is not particularly limited as long as it has transparency and appropriate strength, for example, silicon, quartz, glass, polymer, metal, metal oxide, non-metal oxide, norbornene or polycyclic norbornene-based monomer such as cycloolefin. Cellulose selected from a cycloolefin derivative having a unit of a monomer containing, diacetyl cellulose, triacetyl cellulose, acetyl cellulose butyrate, isobutyl ester cellulose, propionyl cellulose, butyryl cellulose or acetyl propionyl cellulose, ethylene-acetic acid Vinyl copolymer, polyester, polystyrene, polyamide, polyetherimide, polyacrylic, polyimide, polyethersulfone, polysulfone, polyethylene, polypropylene, polymethylpentene, polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol , polyvinyl acetal, polyether ketone, polyether ether ketone, polyether sulfone, polymethyl methacrylate, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polycarbonate, polyurethane, epoxy, etc. It may be a substrate 100 that These materials can be used individually or in mixture of 2 or more types.

The thickness of the substrate 100 is not particularly limited, and may be, for example, 10 to 500 μm.

As shown in FIG. 3 , the conductive nano barrier ribs 200 are positioned on the substrate 100 , and the nano barrier ribs according to the present invention mean a barrier rib having a nano-level thickness.

In addition, the conductive nano barrier rib according to the present invention has an advantage in that the light transmittance is remarkably improved because the electrode is not visually recognized as the thickness of the nano barrier rib is nano-level.

The conductive nano barrier rib 200 is made of a conductive material, for example, In, Co, Si, Ge, Au, Pd, Pt, Ru, Re, Mg, Zn, Hf, Ta, Rh, Ir, W, Ti. , Ag, Cr, Mo, Nb, Al, Ni, Cu, and at least one metal selected from the group consisting of WTi; or indium tin oxide (ITO), indium zinc oxide (IZO), indium zinc tin oxide (IZTO), aluminum zinc oxide (AZO), gallium zinc oxide (GZO), florin tin oxide (FTO), indium tin oxide-silver- Indium tin oxide (ITO-Ag-ITO), indium zinc oxide-silver-indium zinc oxide (IZO-Ag-IZO), indium zinc tin oxide-silver-indium zinc tin oxide (IZTO-Ag-IZTO) and aluminum zinc oxide - At least one metal oxide selected from the group consisting of -silver-aluminum zinc oxide (AZO-Ag-AZO), etc. may be used.

The thickness of the nano-barrier is not particularly limited as long as it is within a range capable of improving transmittance, and for example, the thickness may be 5 to 200 nm, preferably 5 to 100 nm, more preferably 5 to 50 nm, most preferably It may be 10 to 30 nm. If the thickness is less than 5 nm, there may be a problem in durability, and if it exceeds 200 nm, the transmittance may be reduced.

The height of the nano barrier ribs is not particularly limited, and may be, for example, 100 nm to 8,000 nm. If the height is less than 100 nm, it may be difficult to sufficiently attach the conductive light shielding particles, and if it exceeds 8,000 nm, problems such as deterioration of durability of the smart window may occur due to the existence of an excessive gap.

The nano partition walls 200 may be positioned alone or as a plurality of walls.

When a plurality of walls are positioned in parallel, the spacing between the nano-barriers 200 is not particularly limited, and may be, for example, 10 nm to 3 μm, and preferably 10 to 200 nm in terms of improving light extraction efficiency. .

The plurality of walls may not be parallel, but may meet each other, or may be positioned so that their extension lines meet each other.

According to another embodiment of the present invention, the spacing between the nano-barriers 200 may be, for example, 5 to 200 μm, but is not limited thereto.

The nano barrier ribs may form a predetermined pattern. For example, as the opening pattern, the opening may have a polygonal shape such as a circle, an ellipse, a triangle, a square, a pentagon, a hexagon, an octagon, or a combination thereof, and a linear pattern, a mesh pattern, a zigzag, a spiral, a radial shape, an irregular shape It may have a shape such as a single closed curve. 4 illustrates an opening pattern having a hexagonal opening, but is not limited thereto.

The opening pattern is a pattern having openings while being surrounded by nano barrier ribs, and the opening patterns may be located singly or in plurality.

When a plurality of opening patterns are located, each opening pattern may be located at regular or irregular intervals. In addition, the plurality of opening patterns may be connected to or spaced apart from each other, and may be line-symmetrical, point-symmetrical, or irregularly located.

The opening pattern may include a figure shape in which the opening is exemplified above; a shape in which the illustrated figures are combined; Alternatively, at least one of these figures may have a mixed shape, and the openings may be arranged periodically or non-periodically.

The smart window of the present invention includes conductive light-shielding particles 500 filled in at least a portion of the conductive nano barrier ribs 200 .

Since the conductive nano barrier rib 200 according to the present invention is connected to an electrode, it is possible to control whether or not a voltage is supplied to the smart window by a control such as a controller.

As shown in Figure 1, when no voltage is applied to the smart window, since the conductive light shielding particles are irregularly dispersed between the conductive nano-barriers 200, the light is absorbed and scattered, so that the color of the conductive light shielding particles, For example, black, dark blue, etc. are represented.

On the other hand, when a voltage is applied to the smart window, an electric field is formed around the conductive nano barrier ribs. Accordingly, as shown in FIG. 2 , since the conductive light shielding particles 500 having conductivity are regularly arranged and attached to the side of the conductive nano barrier ribs 200 , they are converted to a transparent state.

As described above, the smart window of the present invention includes conductive light-shielding particles filled in at least a portion between the conductive nano-barriers having a nano-thickness and the conductive nano-barriers, thereby improving visibility and remarkably improving light transmittance.

The conductive light shielding particles according to the present invention may be used without particular limitation as long as they have conductivity, for example, carbon black, C.I. Pigment Black 7, a polar nano dye, etc. are mentioned. These can be used individually or in mixture of 2 or more types.

The conductive light-shielding particles may be dispersed in the transparent fluid.

As the transparent fluid, those used in the art may be used without particular limitation, and for example, a non-aqueous polar solvent may be used.

Specific examples of the non-aqueous polar solvent include 1,2-propylene glycol, 1,3-propylene glycol, 1,4-butylene glycol, diethylene glycol, dipropylene glycol, ethylene carbonate, propylene carbonate, 1,2- Butylene carbonate, 1,2-cyclohexane carbonate, glycerin carbonate, dimethyl carbonate, diethyl carbonate, acetophenone, pyridine, dimethylmalonate, diacetone alcohol, hydroxypropyl carbamate, beta-hydroxyethyl carbamate, N -Methyl formamide, N-methyl acetamide, dimethylsulfoxide, sulfolane, 2-pyrrolidone, N-methyl-2-pyrrolidone, N-cyclohexyl-2-pyrrolidone, acetonyl acetone, cyclo Hexanone, ethyl acetoacetate, ethyl-L-lactate, pyrrole, N-methyl pyrrole, N-ethyl pyrrole, 4H-pyran-4-one, 1,3-dimethyl-2-imidazolidinone, morpholine, N-methylmorpholine, N-ethylmorpholine, N-formylmorpholine, beta-propiolactone, beta-valerolactone, beta-hexalactone, gamma-butyrolactone, gamma-valerolactone, gamma- Hexalactone, gamma-heptalactone, gamma-octalactone, gamma-nonalactone, gamma-decalactone, delta-valerolactone, delta-hexalactone, delta-heptalactone, delta-octalactone, delta -Nonalactone, delta-decalactone, delta-tetradecalactone, delta-octadecolactone, etc. are mentioned, but are not limited to these. These can be used individually or in mixture of 2 or more types.

If necessary, the transparent fluid in which the conductive light-shielding particles can be dispersed may further include a surfactant.

Examples of surfactants include neutral surfactants such as betaine (Zwittergent), phospholipids, lecithin, TRITON™, and TWEENTM; cationic surfactants of alkene oxide block polymers such as ethylene oxide and propylene oxide; cationic surfactants such as alkyldimethylamine; a quaternary ammonium salt surfactant such as CTAB or a compound represented by the following formula (1); such as alkyl aryl sulfonate, sodium dodecyl sulfate (SDS), alkyl aryl sulfonate, bis-2-ethylhexyl sodium sulfosuccinate, carboxyl-based surfactant, and phosphate-based surfactant anionic surfactants; fluorocarbon-based surfactants; amphoteric (amphoteric) surfactants; SiO ₂ , A1 ₂ 0 ₃ , BaTiO ₄ , a solid such as zeolite having a particle size of several Åm to several μm, or a mixture thereof. These can be used individually or in mixture of 2 or more types.

[Formula 1]

R _x H _y N ⁺ X ^-

(wherein R is an organic substituent such as alkyl, aryl or ether, x is an integer from 1 to 4, y is an integer from 0 to 3, and X is a counterion).

The surfactant contributes to colloidal stabilization of the conductive light-shielding particles in the transparent fluid, and can reduce the required voltage by lowering the interfacial tension.

The smart window of the present invention includes an electrode for applying a voltage to the conductive nano barrier rib 200, and transmits or shields light depending on whether a voltage is applied or not.

As the electrode, as long as it can form an electric field in the conductive nano barrier rib 200 , any electrode used in the art may be used without any particular limitation.

The smart window of the present invention may further include a polymer pattern 400 in at least a portion between the conductive nano barrier ribs 200 .

As the polymer pattern 400 , as long as it is a transparent polymer, any polymer resin known in the art can be used without limitation, for example, epoxy-based, cellulose-based, acrylic, vinyl chloride-based, vinyl acetate-based, polyvinyl alcohol-based, polyurethane-based resins. , may be a polymer resin such as polyester. These can be used individually or in mixture of 2 or more types.

In addition, the smart window of the present invention may further include a common configuration required for the smart window.

In addition, the present invention provides an image display device including the smart window. The image display device of the present invention includes a smart window including a conductive nano barrier rib, and thus visibility and transmittance are remarkably improved.

The image display device may include a liquid crystal display device, an OLED, a flexible display, and the like, but is not limited thereto, and all image display devices known in the art to which it can be applied may be exemplified.

In addition, the smart window of the present invention can be applied to transportation means such as glass products for construction, automobiles, and aircraft.

In addition, the present invention provides a method of manufacturing the smart window.

Hereinafter, a method of manufacturing a smart window according to an embodiment of the present invention will be described.

First, a polymer pattern 400 is formed on the substrate 100 as shown in FIG. 5A .

The polymer pattern 400 may be formed by forming a polymer resin layer on the substrate 100 and patterning it.

Since the height of the nano-barrier is determined according to the height of the polymer pattern, the height of the nano-barrier of the present invention can be selected by adjusting the height of the polymer pattern.

As the polymer resin layer, polymer resins known in the art can be used without limitation, for example, epoxy-based, cellulose-based, acrylic-based, vinyl chloride-based, vinyl acetate-based, polyvinyl alcohol-based, polyurethane-based, polyester-based, etc. It may be a polymer resin of These can be used individually or in mixture of 2 or more types.

The patterning method of the polymer resin layer is not particularly limited, and for example, a screen printing method, a gravure printing method, a flexographic printing method, an offset printing method, an inkjet coating method, a dispenser printing method, a photolithography method, a method such as nanoimprinting. It can be used, and in terms of being able to form a fine pattern, it is preferably by the nano-imprinting method.

Thereafter, a conductive layer 300 is formed on the substrate 100 on which the polymer pattern 400 is formed, as shown in FIG. 5B .

The conductive layer 300 is a conductive material such as one or more metals and one or more metal oxides described above, and includes a physical vapor deposition method, a chemical vapor deposition method, a plasma deposition method, a plasma polymerization method, a thermal evaporation method, a thermal oxidation method, an anodic oxidation method, a cluster ion beam deposition method, It may be formed by methods such as screen printing, gravure printing, flexographic printing, offset printing, inkjet coating, dispenser printing, and photolithography, but is not limited thereto.

As a conductive material used for the conductive layer 300 , for example, In, Co, Si, Ge, Au, Pd, Pt, Ru, Re, Mg, Zn, Hf, Ta, Rh, Ir, W, Ti, Ag , Cr, Mo, Nb, Al, Ni, Cu, and at least one metal selected from the group consisting of WTi; or indium tin oxide (ITO), indium zinc oxide (IZO), indium zinc tin oxide (IZTO), aluminum zinc oxide (AZO), gallium zinc oxide (GZO), florin tin oxide (FTO), indium tin oxide-silver- Indium tin oxide (ITO-Ag-ITO), indium zinc oxide-silver-indium zinc oxide (IZO-Ag-IZO), indium zinc tin oxide-silver-indium zinc tin oxide (IZTO-Ag-IZTO) and aluminum zinc oxide One or more metal oxides selected from the group consisting of -silver-aluminum zinc oxide (AZO-Ag-AZO) may be used, but the present invention is not limited thereto.

Thereafter, as shown in FIG. 5 ( c ), the conductive layer 300 is ion-milled and etched, and a nano-thick coating layer is formed on the side surface of the polymer pattern 400 to form the nano barrier ribs 200 .

The nano-thick coating layer corresponds to the nano partition wall 200 .

The gas used for ion formation may be, for example, argon, helium, nitrogen, hydrogen, oxygen, or a mixture thereof, preferably argon.

Ion milling conditions are not particularly limited, and for example ^{, plasma may be formed with a gas under a pressure of 10 - 5} Torr to 10 ^{- 3} Torr, and then the plasma may be accelerated to 100 eV to 1500 eV. If the energy is less than 100 eV, it may be difficult to etch the conductive layer 300, and if it exceeds 1500 eV, the polymer pattern 400 may be damaged and it may be difficult to generate the nano barrier ribs.

The thickness of the nano-barrier 200 according to the present invention may be selected by controlling the conditions of ion milling.

The thickness of the nano-barrier 200 is not particularly limited as long as it is within a range capable of improving transmittance, and may be, for example, 5 to 200 nm, preferably 5 to 100 nm, more preferably 5 to 50 nm, most preferably may be 10 to 30 nm. If the thickness is less than 5 nm, there may be a problem in durability, and if it exceeds 200 nm, the transmittance may be reduced.

The height of the nano barrier ribs is not particularly limited, and may be, for example, 100 m to 8,000 nm. If the height is less than 100 nm, it may be difficult to sufficiently attach the conductive light shielding particles, and if it exceeds 5,000 nm, problems such as deterioration of durability of the smart window may occur due to the existence of an excessive gap.

Next, a conductive light-shielding particle solution is coated on the substrate on which the nano barrier ribs are formed.

The method of coating the conductive light-shielding particle solution can be formed using any method known in the art without any particular limitation, for example, it can be coated by applying and drying a transparent fluid containing the conductive light-shielding particles described above. can, but The present invention is not limited thereto.

Next, the electrodes are connected to the conductive nano barrier ribs. A method of connecting the electrodes to the conductive nano barrier ribs may be formed using any method known in the art without any particular limitation.

If necessary, in the method for manufacturing a smart window of the present invention, only the nano partition wall 200 formed on the side surface may remain by removing the polymer pattern 400 as shown in FIG. 5(d). FIG. 6(d) is a cross-sectional view taken along line A-A' of FIG. 4 .

100: substrate 200: conductive nano barrier ribs
300: conductive layer 400: polymer pattern
500: conductive light shielding particles

Claims (17)

insulated substrate;
conductive nano barrier ribs formed on the insulating substrate at predetermined intervals;
conductive light-shielding particles filled in at least a portion between the nano-barriers; and
and an electrode for applying a voltage to the nano-barrier rib;
When the electrode applies a voltage to the conductive nano barrier rib, the conductive light shielding particles are attached only to the side of the conductive nano barrier rib, a smart window.
The smart window according to claim 1, wherein the nano barrier rib has a thickness of 5 to 200 nm.
The smart window according to claim 1, wherein the nano barrier ribs form a predetermined pattern.
The smart window of claim 3, wherein the opening is an opening pattern having a circle, ellipse, triangle, square, pentagon, hexagon, octagon, or a mixed figure shape.
The smart window of claim 1, wherein the nano-barrier has a height of 100 to 8,000 nm.
The method according to claim 1, The nano barrier ribs In, Co, Si, Ge, Au, Pd, Pt, Ru, Re, Mg, Zn, Hf, Ta, Rh, Ir, W, Ti, Ag, Cr, Mo, Nb , Al, Ni, Cu, and at least one metal selected from the group consisting of WTi; or indium tin oxide (ITO), indium zinc oxide (IZO), indium zinc tin oxide (IZTO), aluminum zinc oxide (AZO), gallium zinc oxide (GZO), florin tin oxide (FTO), indium tin oxide-silver- Indium tin oxide (ITO-Ag-ITO), indium zinc oxide-silver-indium zinc oxide (IZO-Ag-IZO), indium zinc tin oxide-silver-indium zinc tin oxide (IZTO-Ag-IZTO) and aluminum zinc oxide -Silver-Aluminum Zinc Oxide (AZO-Ag-AZO), a smart window comprising one or more metal oxides selected from the group consisting of.
The smart window according to claim 1, wherein the conductive light shielding particles are at least one selected from the group consisting of carbon black, CI pigment black 7, and polar nano dyes.
delete The smart window according to claim 1, further comprising a polymer pattern in at least a portion of between the conductive nano barrier ribs.
An image display device comprising the smart window of any one of 1 to 7, and 9.
forming a polymer pattern on a substrate;
forming a conductive layer on the substrate on which the polymer pattern is formed;
etching the conductive layer by ion milling, and forming a nano-thick coating layer on a side surface of the polymer pattern to form nano partition walls;
coating a conductive light-shielding particle solution on the substrate on which the nano barrier ribs are formed; and
Connecting an electrode to the conductive nano barrier rib; Containing, a method of manufacturing a smart window.
The method according to claim 11, wherein the nano barrier rib has a thickness of 5 to 200 nm.
The method of claim 11 , wherein the polymer pattern is formed by a nano-imprinting method.
The method of claim 11 , wherein the coating layer is formed by attaching conductive particles torn out by ion milling to a side surface of a polymer pattern.
The method according to claim 11, wherein the conductive layer is In, Co, Si, Ge, Au, Pd, Pt, Ru, Re, Mg, Zn, Hf, Ta, Rh, Ir, W, Ti, Ag, Cr, Mo, Nb , Al, Ni, Cu, and at least one metal selected from the group consisting of WTi; or indium tin oxide (ITO), indium zinc oxide (IZO), indium zinc tin oxide (IZTO), aluminum zinc oxide (AZO), gallium zinc oxide (GZO), florin tin oxide (FTO), indium tin oxide-silver- Indium tin oxide (ITO-Ag-ITO), indium zinc oxide-silver-indium zinc oxide (IZO-Ag-IZO), indium zinc tin oxide-silver-indium zinc tin oxide (IZTO-Ag-IZTO) and aluminum zinc oxide -Silver-Aluminum zinc oxide (AZO-Ag-AZO) will include one or more metal oxides selected from the group consisting of, a method of manufacturing a smart window.
The method of claim 11, wherein the ion milling is performed by accelerating the plasma to 100ev to 1500eV under a pressure of ^{10 - 5} Torr to 10 ^{- 3 Torr.}
The method of claim 11, further comprising removing the polymer pattern.

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