KR101656490B1 - Adhesive Smart Window Film and Manufacturing Method Thereof - Google Patents

Adhesive Smart Window Film and Manufacturing Method Thereof Download PDF

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Publication number
KR101656490B1
KR101656490B1 KR1020150040085A KR20150040085A KR101656490B1 KR 101656490 B1 KR101656490 B1 KR 101656490B1 KR 1020150040085 A KR1020150040085 A KR 1020150040085A KR 20150040085 A KR20150040085 A KR 20150040085A KR 101656490 B1 KR101656490 B1 KR 101656490B1
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South Korea
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layer
adhesive
transparent electrode
electrochromic
forming step
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KR1020150040085A
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Korean (ko)
Inventor
김혜경
이소희
김세현
박수미
박규태
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영남대학교 산학협력단
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G02F1/153—Constructional details
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular compounds

Abstract

The present invention relates to an adhesive smart window film and a method of manufacturing the same. The method of manufacturing an adhesive smart window film includes: a discoloring part forming step of forming a discoloring part which includes an electric discoloring layer discolored as electrons transfer and a first transparent electrode layer, wherein the discoloring part has conductivity and permeability; an adhesive part forming step of forming an adhesive part which includes a second transparent electrode layer and an adhesive layer, wherein the adhesive part has conductivity and permeability; and a coupling step of coupling the adhesive part formed in the adhesive part forming step and the discoloring part formed in the discoloring part forming step to each other. Since at least portion of one side surface of the second transparent electrode layer is patterned with a conductive material in the adhesive part forming step, the adhesive smart window film may be easily attached to a previous window. Further, since the adhesive smart window film has a thin thickness, the appearance is good. In addition, since the adhesive smart window film is easily installed so that the cost may be reduced and the availability may be improved.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an adhesive smart window film,

The present invention relates to a smart window film and a method of manufacturing the same, and more particularly, to an adhesive smart window film which can be attached to a general window or the like, and is easy to install and replace, and a method for manufacturing the same.

The smart window is a window that can freely adjust the transmittance of sunlight, and is also called an electronic curtain, a variable-transmittance glass, or a dimmer glass. Such a smart window uses an electrochromic device (ECD), and the electric field is applied to change the color according to the current flow.

Smart windows are used in windows, mirrors or display devices to control the transmission and reflectivity of light. The smart window can reversibly control the color of a substance by an electrochemical oxidation / reduction reaction. It can change the color depending on the change of energy absorption in the ultraviolet ray, visible light, and near infrared region due to electron transfer accompanied by oxidation or reduction .

When such a smart window is applied to a window of a building or an automobile, it is possible to control the indoor temperature to be as transparent as possible in the winter, and to shut off the sunlight in the summer, so that the indoor temperature can be controlled and energy can be saved .

Related to this smart window, Korean Patent No. 10-1319443 (entitled " Electrochromic Smart Window Film, hereinafter referred to as Prior Art 1) " According to the prior art 1, there is disclosed a technique for solving the problem that an entire smart window becomes a defective product when a foreign substance is input or a problem occurs in the process of coating and depositing to produce a smart window film.

However, according to the prior art 1, there are the following problems.

There is a problem that it is difficult to construct, maintain, and repair the glass because it is necessary to replace the glass when the existing window is installed or when defects occur in the existing installed product and it is necessary to replace the glass.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a smart smart window which can easily install a smart window without replacing a glass already installed, .

According to another aspect of the present invention, there is provided a method of manufacturing a sticky smart window film, comprising: forming an electrochromic layer and a first transparent electrode layer that are discolored according to movement of electrons, Forming a discoloring portion; Forming a bonding portion including a second transparent electrode layer and an adhesive layer and forming a bonding portion having electrical conductivity and light permeability; And a bonding step of bonding the adhesive portion formed in the adhesive portion forming step and the discoloring portion formed in the discoloring portion forming step; The first transparent electrode layer may be patterned with an electrically conductive material so that electrons are transferred to at least a portion of one side of the second transparent electrode layer.

The adhesive layer forming step may include an adhesive layer forming step of forming the adhesive layer on one side of the adhesive layer protective film with an adhesive; A second polymer base layer forming step of forming the second polymer base layer having transparency to light on one side of the adhesive layer formed in the adhesive layer forming step; A second transparent electrode layer forming step of coating one side of the second polymer base layer formed in the second polymer base layer forming step with a liquid containing silver nanowires; And a second patterning step of patterning at least a portion of the second polymer base material layer coated with the liquid containing the silver nanowire with a material having electrical conductivity in the second transparent electrode layer forming step .

The forming of the discoloring unit may include: forming a first transparent electrode layer on one side of the first polymer base layer with a liquid containing silver nano wires; A first patterning step of patterning at least a part of the first transparent electrode layer coated with a liquid including the silver nanowire with an electrically conductive material in the first transparent electrode layer forming step; Forming an electrochromic layer on the first transparent electrode layer patterned in the first patterning step on the side coated with the silver nanowire; And forming an electrolyte layer on the one side of the electrochromic layer formed in the electrochromic layer formation step with an electrolyte material; May be another feature of the present invention.

Further, in the bonding step, the bonding of the adhesive portion and the discoloring portion is such that the surface of the adhesive portion and the surface of the electrolyte layer of the discoloring portion are in contact with each other, It can also be a feature.

Here, the electrochromic layer forming step may include: an electrochromic material coating step of coating one side of the first transparent electrode layer with an electrochromic material solution; And an electrochromic material drying step of drying the electrochromic material solution coated in the electrochromic material coating step; May be another feature of the present invention.

Further, the electrochromic material solution

Figure 112015028170895-pat00001
,
Figure 112015028170895-pat00002
or
Figure 112015028170895-pat00003
(DI water) and an alcohol, and it may be another feature of the present invention.

Here, the electrolyte layer forming step may include a step A wherein a polymer polymer solution is formed by mixing a polymer polymer with a solvent; A step B for adding an ionic liquid to the polymer polymer solution mixed in the step A to form an ionic gel solution; A step C of coating the surface of the electrochromic layer with the ionic gel solution formed in the step B; And D) drying the ionic gel solution coated on the surface of the electrochromic layer in step C to remove the solvent; May be another feature of the present invention.

Further, the polymer may be a polyvinylidene fluoride-co-hexafluoropropylene (PDVF), a styrene-block-ethyleneoxide-block styrene (SOS) triblock copolymer, a poly (ethylene oxide) -poly (propylene oxide) block copolymer, , Polystyrene, polyethylene, and polypropylene, may be further used.

Further, the ionic liquid may be an ionic liquid containing an imidazole functional group, an ionic liquid containing a sulfonyl imide functional group, 1-Ethyl-3-methylimidazolium (EMBI) bis trifluoromethylsulfonylimide, 1-ethyl-3-methylimidazolium hexafluorophosphoate and 1-ethyl-3-methylimidazolium tetrafluoroborate. 3-methylimidazolium tetrafluoroborate).

Here, the first polymer base layer may be formed of at least one selected from the group consisting of polyester, polyethyleneterephthalate, polyphenylenesulfide, polystyrene, polyamide, polycarbonate, And may be made of any one selected from the group consisting of polymethyl methacrylate, polyethylene naphthalate, polyethylene and polypropylene.

Here, the second polymer base layer may be formed of at least one selected from the group consisting of polyester, polyethyleneterephthalate, polyphenylenesulfide, polystyrene, polyamide, polycarbonate, And may be made of any one selected from the group consisting of polymethyl methacrylate, polyethylene naphthalate, polyethylene and polypropylene.

Here, the adhesive may be one of silicone, acrylic, epoxy and urethane adhesives.

According to another aspect of the present invention, there is provided a glue type smart window film comprising: a first transparent electrode body having electrical conductivity and transmittance to light; An electrochromic layer provided on one side of the first transparent electrode body and discolored by the movement of electrons; An electrolyte layer formed on one side of the electrochromic layer and made of an electrolyte so that the electrochromic layer can cause electrochromism; A second transparent electrode member provided on one side of the electrolyte layer and having electrical conductivity and transparency to light; And an adhesive layer provided on one side of the second transparent electrode body and formed of an adhesive, wherein the first transparent electrode body or the second transparent electrode body is patterned with an electrically conductive material toward the electrochromic layer, .

Here, another feature may be that the adhesive layer protective film for protecting the surface of the adhesive layer from adhering foreign substances from the outside is attached to one side of the adhesive layer, but can be removed from the adhesive layer.

Here, the first transparent electrode member or the second transparent electrode member may have another feature that the polymer base member having light permeability is coated with a liquid containing silver nano wires on one side.

Further, the polymer base material may be composed of any one selected from the group consisting of polyester, polyethylene terephthalate, polyphenylene sulfide, polystyrene, polyamide, polycarbonate, polymethyl methacrylate, polyethylene naphthalate, polyethylene and polypropylene .

Here, the electrochromic layer may include

Figure 112015028170895-pat00004
,
Figure 112015028170895-pat00005
or
Figure 112015028170895-pat00006
May be a feature of the present invention.

Here, the electrolyte layer may be an ion gel comprising a polymer polymer and an ionic liquid.

Further, the polymeric polymer contained in the electrolyte layer may be at least one selected from the group consisting of polyvinylidene fluoride-co-hexafluoropropylene (PDVF), styrene-block-ethyleneoxide-block styrene (SOS) triblock copolymer, poly (ethylene oxide) -poly a copolymer, a cellulose, a polystyrene, a polyethylene, and a polypropylene may be another feature of the present invention.

Further, the ionic liquid contained in the electrolyte layer may be an ionic liquid containing an imidazole functional group, an ionic liquid containing a sulfonyl imide functional group, an EMBI (1- Ethyl-3-methylimidazolium hexafluorophosphoate and 1-ethyl-3-methylimidazolium bis trifluoromethylsulfonylimide, 1-ethyl-3-methylimidazolium hexafluorophosphoate, (1-Ethyl-3-methylimidazolium tetrafluoroborate).

The adhesive smart window film according to the present invention can be easily attached to an existing window and can be installed. Since the thickness is thin, it is aesthetically pleasing, easy to install, and cost effective.

Also, in the adhesive smart window film according to the present invention, it is possible to prevent the occurrence of leaking or vapor, and thus the possibility of occurrence of defects due to leakage or vapor can be suppressed. Therefore, there is an effect of increasing the product yield or productivity at the top of the manufacturing process.

Since an electrolyte layer of an ion gel can be formed using an inkjet printing method or the like, it can be manufactured more easily in a manufacturing process, and it is possible to manufacture a smart window having more various shapes (shapes) It is possible to create a product design of the product.

1 is a cross-sectional view schematically showing a sticky smart window film according to an embodiment of the present invention.
2 is a flowchart schematically showing a method of manufacturing a sticky smart window film according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, a preferred embodiment of a sticky smart window film according to the present invention will be described first, and then a preferred embodiment of a method for manufacturing a sticky smart window film according to the present invention will be described.

1 is a cross-sectional view schematically showing a sticky smart window film according to an embodiment of the present invention.

1, the adhesive smart window film according to an exemplary embodiment of the present invention includes a first transparent electrode layer 110, a first electrochromic layer 120, an electrolyte layer 130, and a second transparent electrode layer 140 And more preferably, a second electrochromic layer 140 is further included.

The first transparent electrode layer 110 preferably has electrical conductivity and is transparent to light. The first transparent electrode layer 110 includes a coating layer 113 coated with a solution containing silver nanowires on the first polymer base layer 111. Then, a solution containing the silver nanowires is patterned 115 with an electrically conductive material on the side where the coating 113 is formed.

Thus, the surface coated with the solution containing the silver nanowires 113 and patterned 115 with the electrically conductive material is positioned toward the electrochromic layer 120 or the electrolyte layer 130 side.

Here, the patterned shape may be patterned 115 to surround the outer surface of the film surface or to form a contour of a certain shape (e.g., a contour of a picture). Thus, the discoloring action of the smart window can occur on the inner surface of the patterning 115.

For example, ITO glass (Indium Titanium Oxide Glass) can be used as the first transparent electrode layer 110. ITO glass is well known, so a detailed description thereof will be omitted.

In addition to the ITO glass, the first transparent electrode layer 110 may include a polymer substrate layer 111 having electrical conductivity and transparency to light. That is, it is coated with an electrically conductive material in order to impart electrical conductivity to one side of the polymer base layer 111 that has permeability to light (the side of the side in which the electrochromic layer and the electrolyte layer 130 are present) (113) in which a coating layer is formed with a solution containing silver nanowires.

It is preferable that the coating layer 113 coated with the solution containing the silver nanowire is patterned 115 with an electrically conductive material. Here, the electrically conductive material used to form the patterning 115 may have the same composition ratio as the silver nanowire solution used for forming the coating layer 113, but may be a material having a composition ratio or composition ratio different from that of the silver nano wire solution Or patterned (115).

Examples of the polymer substrate used for forming the polymer substrate layer 111 include polyester, polyethyleneterephthalate (PET), polyphenylenesulfide (PPS), polystyrene, polyamide, One or more materials selected from among polypropylene (PP), polycarbonate, polymethyl methacrylate (PMMA), polyethylene naphthalate (PEN), polyethylene (PE) And a thickness of between 80 and 300 micrometers, and a permeability to air of at least 85%.

The silver nano wire solution coating layer 113 provided on one side of the polymer substrate layer 111 is formed by condensing atoms, molecules, or ions on a transparent glass substrate or a thin polymer substrate by a physicochemical method. The silver nano wire solution coating layer 113 is transparent in the visible light region, It is preferable that the conductivity is large.

The first transparent electrode layer 110 preferably has heat resistance, alkali resistance, etching characteristics, electrochemical stability, film surface shape, adhesion strength, adhesion hardness, film thickness, etc. in addition to light transmittance and electrical conductivity.

Next, the electrochromic layer 120 is provided on one side of the first transparent electrode layer 110. And it is preferable that it can be discolored by the movement of electrons. Here, the transfer of electrons means electrochemical oxidation and reduction reactions. As the electrochromic layer 120,

Figure 112015028170895-pat00007
,
Figure 112015028170895-pat00008
or
Figure 112015028170895-pat00009
But is not limited thereto. The electrochromic layer 120 may be formed of an organic discoloring material or an inorganic discoloring material.

In the embodiment of the present invention, the electrochromic layer 120

Figure 112015028170895-pat00010
,
Figure 112015028170895-pat00011
or
Figure 112015028170895-pat00012
And the electrochromic layer 120 may be formed by a conventionally known method, so that a detailed description thereof will be omitted.

Next, an electrolyte layer 130 is provided on one side of the electrochromic layer 120, and is made of an electrolyte so that the electrochromic layer 120 can cause electrochromism. The electrolyte layer 130 may be a liquid electrolyte or an ion gel including a polymer polymer and an ionic liquid.

The polymer polymer included in the electrolyte layer 130 may be polyvinylidene fluoride-co-hexafluoropropylene (PDVF), styrene-block-ethyleneoxide-block styrene (SOS) triblock copolymer, poly (ethylene oxide) -poly ) block copolymer, cellulose, polystyrene, polyethylene, polypropylene, and the like, or any one of them.

The ionic liquid contained in the electrolyte layer 130 may be an ionic liquid containing an imidazole functional group, an ionic liquid containing a sulfonyl imide functional group, an EMBI (1-ethyl-3-methylimidazolium bis trifluoromethylsulfonylimide), 1-Ethyl-3-methylimidazolium hexafluorophosphoate and 1-Ethyl-3-methylimidazolium tetrafluoroborate.

A second transparent electrode layer 140 is formed on one side of the electrolyte layer 130.

The second transparent electrode layer 140 is preferably electrically conductive and has transparency to light. The second transparent electrode layer 140 includes a coating layer 143 coated with a solution containing a silver nanowire on the second polymer base layer 141. Then, a solution containing silver nanowires is patterned 145 with an electrically conductive material on the coated side.

As shown in FIG. 1, a coating layer 143 coated with a solution containing a silver nanowire and a patterned side 145 are provided to face the electrolyte layer 130 or the electrochromic layer 120.

The patterned pattern may be patterned 145 to surround the outer surface of the film surface or to form a contour of a certain shape (e.g., a contour of a picture). Thus, the discoloring action of the smart window can occur on the inner surface of the patterning 145.

For example, ITO glass (Indium Titanium Oxide Glass) can be used as the second transparent electrode layer 140. ITO glass is well known, so a detailed description thereof will be omitted.

In addition to the ITO glass, the second transparent electrode layer 140 may include a second polymer base layer 141 having electrical conductivity and transparency to light. That is, in order to impart electrical conductivity to one side of the second polymer base layer 141 that has permeability to light (the side of the electrochromic layer 120 or the side where the electrolyte layer 130 is present) (143) in which a coating layer is formed with a solution containing silver nano wires.

The coating layer 143 coated with a solution containing a silver nanowire is preferably patterned 145 with an electrically conductive material. Here, the electrically conductive material used for forming the patterning layer 145 may have the same composition ratio as the silver nanowire solution used for forming the coating layer 113, but may be a material having a composition ratio or a composition ratio different from that of the silver nano wire solution. Patterned (145).

Examples of the polymer substrate used for forming the second polymer base layer 141 include polyester, polyethylene terephthalate (PET), polyphenylenesulfide (PPS), polystyrene, polyamide (PE), polyethylene (PE), and polypropylene (PP), which are selected from the group consisting of polyamide, polycarbonate, polymethyl methacrylate (PMMA), polyethylene naphthalate It is preferable to have a thickness of between 80 and 300 micrometers and a permeability of not less than 85% with respect to air.

The silver nano wire solution coating layer 143 provided on one side of the polymer substrate layer 141 is formed by condensing atoms, molecules or ions on a transparent glass substrate or a thin polymer substrate by a physicochemical method. The silver nano wire solution coating layer 143 is transparent in the visible light region, It is preferable that the conductivity is large.

The second transparent electrode layer 140 preferably has heat resistance, alkali resistance, etching property, electrochemical stability, film surface shape, adhesion strength, adhesion hardness, film thickness, etc. in addition to light transmittance and electrical conductivity.

Next, an adhesive layer 150 is formed on one side of the second transparent electrode layer 140. The adhesive layer 150 is formed of a transparent adhesive. The adhesive layer 150 enables the adhesive smart window film according to the present invention to be attached to a window or the like.

The transparent adhesive for forming the adhesive layer 150 may be any one selected from silicon-based, acrylic-based, epoxy-based, and urethane-based adhesives.

On one side of the adhesive layer 150, an adhesive layer protective film 160 is provided. The adhesive layer protective film 160 is a thin film made of a polymer base material and is provided to protect foreign matter from adhering to the surface of the adhesive layer 150 from the outside. When the adhesive smart window film is attached to the window, the adhesive layer protective film 160 is removed and the adhesive layer 150 exposed to the outside can be adhered to the window glass or the like.

Next, a method of manufacturing a sticky smart window film according to an embodiment of the present invention will be described with reference to FIG.

2 is a flowchart schematically showing a method of manufacturing a sticky smart window film according to an embodiment of the present invention.

2, the method of manufacturing a sticky smart window film according to an embodiment of the present invention includes a step of forming an adhesive part (S10), a step of forming a discoloration part (S20), and a bonding step (S30) (S10), it is preferable to pattern (145) an electrically conductive material so that an electric field is formed on at least a part of one side of the second transparent electrode layer 140 or an electron is moved.

The adhesive layer forming step S10 is a step of forming a bonding portion including the second transparent electrode layer 140 and the adhesive layer 150 and having electrical conductivity and light permeability.

Here, the adhesive portion includes the second transparent electrode layer 140 and the adhesive layer 150 in the adhesive smart window film described above, and may further include the adhesive layer protective film 160. The step of forming such a bonding portion is the bonding portion forming step (S10).

The step S20 of forming the discoloring portion includes a step of forming a discoloring portion including the electrochromic layer 120 and the first transparent electrode layer 110 which are discolored according to the movement of electrons and having electrical conductivity and light permeability .

That is, in the discoloring portion, the first transparent electrode layer 110 and the electrochromic layer 120 are included in the above-described adhesive smart window film, and more preferably, the electrolyte layer 130 is also included. The step of forming such a discolored portion is a discolored portion formation step (S20).

The combining step S30 is a step of bonding the adhering portion and the discoloring portion.

Therefore, as a whole, a sticky smart window film can be manufactured by forming the discoloring portion and the adhesive portion separately, and then combining the discoloring portion and the adhesive portion, and the discoloring portion forming step (S20) and the adhesive portion forming step (S10) .

That is, the step of forming the discolored portion may be performed after the step of forming the adhesive portion (S10), or the step of forming the adhesive portion (S10) may be performed after the step of forming the discolored portion (S20) (S20) and the adhesive part forming step (S10) may be carried out simultaneously in another space. The adhesive smart window film can be completed by bonding the adhesive portion and the discoloring portion in the bonding step S30 after forming the adhesive portion and the discoloring portion.

Hereinafter, the adhesive layer forming step (S10) will be described in more detail in accordance with the procedure shown in FIG.

<< S10 >>

The adhesive portion forming step S10 includes an adhesive layer forming step S110, a second polymer base layer forming step S120, a second transparent electrode layer forming step S130 and a second patterning step S140.

<< S110 >>

The adhesive layer forming step S110 is a step of forming the adhesive layer 150 on one side of the adhesive layer protective film 160 with an adhesive.

The adhesive layer protective film 160 is a thin polymer film for protecting the adhesive layer 150 from foreign substances adhered thereto as described above. And the adhesive layer 150 is formed by applying an adhesive thereon. Here, the adhesive layer 150 is formed by selecting any one of silicone-based, acrylic-based, epoxy-based, and urethane-based adhesives as a transparent adhesive for forming the adhesive layer 150.

<< S120 >>

Next, in the second polymer base layer forming step S120, a second polymer base layer 141 having light permeability is formed on one side of the adhesive layer 150 formed in the adhesive layer forming step S110.

The polymer substrate used for forming the second polymer substrate layer 141 may be a polymer substrate such as polyester, polyethylene terephthalate (PET), polyphenylenesulfide (PPS), polystyrene, polyamide one selected from the group consisting of polyamide, polycarbonate, polymethyl methacrylate (PMMA), polyethylene naphthalate (PEN), polyethylene (PE) and polypropylene (PP) It is desirable that the material having a thickness of 80 to 300 micrometers or more and having a permeability of 85% or more with respect to air is not limited to this. It is also desirable to have flexibility when considering the ease of construction and the like.

<< S130 >>

Next, in the second transparent electrode layer forming step (S130), one side of the second polymer base material layer 141 formed in the second polymer substrate layer forming step (S120) is coated with a liquid containing silver wire.

The silver nano wire solution coating layer 143 formed on one side of the second polymer base layer 141 is formed by condensing atoms, molecules or ions on a transparent glass substrate or a thin polymer substrate by a physicochemical method, , And a large electric conductivity is preferable.

For example, in order to form a coating layer with a solution containing a silver nano wire, an electrode is formed by 0.1 to 1 wt% silver nano wire solution by a method such as spray coating, spin coating, bar coating or slot die coating, In a temperature range not exceeding 10 degrees.

<< S140 >>

Next, in the second patterning step (S140), at least a portion of the second polymer base layer 141 coated with the liquid containing the silver nanowires is patterned with an electrically conductive material in the second transparent electrode layer forming step (S130) 145).

For example, the silver nano wire may be patterned 145 by a method such as inkjet printing, spray coating or the like on a portion to be patterned with a solution containing 1 to 20 wt% and a total solids content of 1 to 50 wt%.

 A description will now be given of the discoloration layer formation step (S20) that can be carried out next.

<< S20 >>

The coloring layer forming step S20 includes a first transparent electrode layer forming step S210, a first patterning step S220, an electrochromic layer forming step S230, and an electrolyte layer forming step S240.

<< S210 >>

The first transparent electrode layer forming step S210 is a step of coating one side of the first polymer base material layer 111 with a liquid containing a silver wire.

Here, the polymer base material used as the first polymer base layer 111 may be selected from the group consisting of polyester, polyethyleneterephthalate (PET), polyphenylenesulfide (PPS), polystyrene, polyamide (PE), polyethylene (PE), and polypropylene (PP), which are selected from the group consisting of polyamide, polycarbonate, polymethyl methacrylate (PMMA), polyethylene naphthalate It is preferable to have a thickness of between 80 and 300 micrometers and a permeability of not less than 85% with respect to air.

In order to coat the first polymer base layer 111 with a solution containing silver wire on one side of the first polymer base layer 111, 0.1 to 1 wt% of silver wire solution is sprayed, spin coated, bar coated, slotted, Followed by drying for 10 minutes at a temperature of 120 ° C or less at room temperature.

The silver nano wire solution coating layer 113 provided on one side of the polymer substrate layer 111 is formed by condensing atoms, molecules, or ions on a transparent glass substrate or a thin polymer substrate by a physicochemical method. The silver nano wire solution coating layer 113 is transparent in the visible light region, It is preferable that the conductivity is large.

The first transparent electrode layer 110 preferably has heat resistance, alkali resistance, etching characteristics, electrochemical stability, film surface shape, adhesion strength, adhesion hardness, film thickness, etc. in addition to light transmittance and electrical conductivity.

<< S220 >>

First Patterning Step S220 In the first transparent electrode layer forming step S210, at least a portion of the first transparent electrode layer 110 coated with the liquid containing silver nano wires is patterned 115 with an electrically conductive material .

For example, a solution containing 1 to 20 wt% of silver nanowire and a total solids content of 1 to 50 wt% can be patterned 115 by a method such as inkjet printing, spray coating, or the like on a portion to be patterned.

<< S230 >>

The electrochromic layer forming step S230 is a step of forming the electrochromic layer 120 on the side coated with silver nano wires in the first transparent electrode layer 110 patterned 115 in the first patterning step S220.

The electrochromic layer forming step S230 includes an electrochromic coating step S231 and an electrochromic drying step S233.

        << S231 >>

The electrochromic coating step S231 is a step of coating one side of the first transparent electrode layer 110 with the electrochromic material solution. Here, the electrochromic material solution

Figure 112015028170895-pat00013
,
Figure 112015028170895-pat00014
or
Figure 112015028170895-pat00015
(DI water) and an alcohol (preferably, isopropyl alcohol).

More specifically,

Figure 112015028170895-pat00016
,
Figure 112015028170895-pat00017
or
Figure 112015028170895-pat00018
And a mixture of DI water and isopropyl alcohol in a mass ratio of 1: 1: 1 to produce a second electrochromic material solution.

The electrochromic material solution thus produced is coated on one side of the electrolyte layer 130. As a method of coating with an electrochromic material solution, spray coating, spin coating, bar coating, slot die coating and the like can be used.

        << S233 >>

The electrochromic material drying step S233 is a step of drying the electrochromic material solution coated in the electrochromic material coating step S231.

For example, the electrochromic layer 140 is formed by drying for 10 minutes within a temperature range of room temperature to 120 degrees Celsius.

<< S240 >>

The electrolyte layer forming step S240 is a step of forming the electrolyte layer 130 as an electrolyte material on one side of the electrochromic layer 120 formed in the electrochromic layer forming step S230.

Here, the electrolyte layer 130 formed in the electrolyte layer forming step S240 may be formed using a liquid electrolyte or a solid electrolyte.

When a liquid electrolyte or a solid electrolyte is used, a liquid electrolyte including a lithium complex salt, a polyethylene fluoride, an imidazolium, a polyvinylidene fluoride, or a polyvinylidene fluoride may be added to a pure solvent such as ethylene carbonate, dimethyl carbonate or propylene carbonate, And the like can be used.

As a more specific example, in the case of a liquid electrolyte, 35 g of ethylene carbonate, 15 g of dimethyl carbonate,

Figure 112015028170895-pat00019
5.32 g may be used. In the case of the solid electrolyte, 64% of acetone nitrile and 12% of LiClO4 may be used in 24% of polyethylene oxide-polypropylene oxide.

Or the electrolyte layer 130 may be formed from an ion gel solution including a macromolecule polymer and an ionic liquid.

Hereinafter, the case where the electrolyte is formed of an ion gel will be described.

Such an electrolyte layer forming step S240 includes steps A241 to D247.

        << S241 >>

Step A (S241) is a step of mixing the polymeric polymer with a solvent to form a polymeric polymer solution. In this case, the polymer may be a polyvinylidene fluoride-co-hexafluoropropylene (PDVF), a styrene-block-ethyleneoxide-block styrene (SOS) triblock copolymer, a poly (ethylene oxide) -poly (propylene oxide) block copolymer, Polystyrene, polyethylene and polypropylene, or any one of them may be preferably used.

        << S243 >>

Step B (S243) is a step of forming an ionic gel solution by adding ionic liquid to the polymer polymer solution mixed in Step A (S241).

Wherein the ionic liquid comprises an ionic liquid comprising an imidazole functional group, an ionic liquid comprising a sulfonyl imide functional group, EMBI (1-Ethyl-3-methylimidazolium bis trifluoromethylsulfonylimide Ethyl-3-methylimidazolium hexafluorophosphoate and 1-ethyl-3-methylimidazolium tetrafluoroborate (1-Ethyl-3-methylimidazolium hexafluorophosphate) methylimidazolium tetrafluoroborate), or the like, or any one of them may be used.

For example, an ionic gel solution can be formed by mixing polymeric polymer and acetone, adding EMBI as an ionic liquid thereto, and mixing. Preferably, the ionic gel solution can be formed at a mass ratio of 1: 4: 7 between the polymer polymer, acetone and EMBI.

        << S245 >>

Step C (S245) is a step of coating the surface of the electrochromic layer 120 with the ionic gel solution formed in the step B (S243).

For example, the ionic gel solution is spin-coated on the surface of the electrochromic layer 120. In this case, spin coating can be performed at a rotational speed of 1500 RPM for 10 seconds. By coating the surface of the electrochromic layer 120 with the ionic gel solution as described above, the ionic gel solution is uniformly applied to the surface of the electrochromic layer 120.

        << S247 >>

Step D (S247) is a step of drying the ionic gel solution coated on the surface of the electrochromic layer 120 in step C (S245) to remove the solvent.

The solvent can be removed by drying the ionic gel solution spin-coated on the surface of the electrochromic layer 120 in a high-temperature vacuum oven for a long time. For example, the solvent may be removed from the ionic gel solution by drying in a vacuum oven at a temperature of 70 degrees Celsius for at least 24 hours.

The electrolyte layer 130 is formed through this process.

<< S30 >>

Next, the bonding step S30 is a step of bonding the bonding portion formed in the bonding portion forming step S10 and the discoloring portion formed in the discoloring portion forming step S20 as described above. Here, the bonding between the bonding portion and the discoloring portion bonds the surface of the electrolyte layer of the discoloring portion and the patterned surface of the electrically conductive material in the adhering portion so as to be in contact with each other.

Thus, an adhesive smart window film can be produced.

As described above, the adhesive smart window film according to the present invention can be easily attached to existing windows and can be applied to the window. The thin smart window film has a merit of good appearance, easy installation, and cost reduction have.

Also, in the adhesive smart window film according to the present invention, it is possible to prevent the occurrence of leaking or vapor, thereby suppressing the possibility of defects due to leakage or vapor. Thus, there is an advantage that the product production yield and productivity can be increased at the top of the manufacturing process.

Since an electrolyte layer of an ion gel can be formed using an inkjet printing method or the like, it can be manufactured more easily in a manufacturing process, and it is possible to manufacture a smart window having more various shapes (shapes) It also has the advantage of being able to create product designs.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is to be understood that the scope of the present invention is to be construed as being limited only by the embodiments, and the scope of the present invention should be understood as the following claims and their equivalents.

110: first transparent electrode layer 120: electrochromic layer
130: electrolyte layer 140: second transparent electrode layer
150: adhesive layer 160: adhesive layer protective film

Claims (20)

A step of forming a color fading portion including an electrochromic layer and a first transparent electrode layer which are discolored according to the movement of electrons and forming a discoloration portion having electrical conductivity and light permeability;
Forming a bonding portion including a second transparent electrode layer and an adhesive layer and forming a bonding portion having electrical conductivity and light permeability; And
A bonding step of bonding the bonding portion formed in the bonding portion forming step and the discoloring portion formed in the discoloring portion forming step; , &Lt; / RTI &
In the bonding portion forming step,
Patterning the first transparent electrode layer with an electrically conductive material such that electrons are transferred to at least a portion of one side of the second transparent electrode layer,
The color fading portion forming step includes:
A first transparent electrode layer forming step of coating one surface of the first polymer substrate layer with a liquid containing silver nanowires;
A first patterning step of patterning at least a part of the first transparent electrode layer coated with a liquid including the silver nanowire with an electrically conductive material in the first transparent electrode layer forming step;
Forming an electrochromic layer on the first transparent electrode layer patterned in the first patterning step on the side coated with the silver nanowire; And
Forming an electrolyte layer on the one side of the electrochromic layer formed in the electrochromic layer formation step with an electrolyte material,
In the electrochromic layer forming step,
An electrochromic coating step of coating one side of the first transparent electrode layer with an electrochromic material solution; And
An electrochromic material drying step of drying the electrochromic material solution coated in the electrochromic material coating step; Lt; / RTI &gt;
Wherein the electrolyte layer forming step comprises:
(A) mixing the polymeric polymer with a solvent to form a polymeric polymer solution;
A step B for adding an ionic liquid to the polymer polymer solution mixed in the step A to form an ionic gel solution;
A step C of coating the surface of the electrochromic layer with the ionic gel solution formed in the step B; And
Drying the ionic gel solution coated on the surface of the electrochromic layer in step C to remove the solvent; / RTI &gt;
In the bonding portion forming step,
An adhesive layer forming step of forming the adhesive layer on one side of the adhesive layer protective film with an adhesive;
A second polymer base layer forming step of forming a second polymer base layer having transparency to light on one side of the adhesive layer formed in the adhesive layer forming step;
A second transparent electrode layer forming step of coating one side of the second polymer base layer formed in the second polymer base layer forming step with a liquid containing silver nanowires; And
And a second patterning step of patterning at least a portion of the second polymer base material layer coated with the liquid containing the silver nanowire with an electrically conductive material in the second transparent electrode layer forming step,
The bonding portion between the bonding portion and the discoloring portion,
And the surface of the electrolyte layer of the discoloration portion is in contact with the surface of the adhesive portion that is patterned with the electrically conductive material.
Wherein the ionic gel solution coating on the surface of the electrochromic layer is a spin coating in the step (C) included in the electrochromic layer forming step. delete delete delete delete The method according to claim 1,
The electrochromic material solution may contain,
Figure 112016037642272-pat00020
,
Figure 112016037642272-pat00021
or
Figure 112016037642272-pat00022
Wherein the solution is a solution comprising any one selected from the group consisting of DI water and alcohol. delete The method according to claim 1,
The polymer may include polyvinylidene fluoride-co-hexafluoropropylene (PDVF), styrene-block-ethyleneoxide-block styrene (SOS) triblock copolymer, poly (ethylene oxide) -poly (propylene oxide) block copolymer, cellulose, Wherein the adhesive is one of polystyrene, polyethylene, and polypropylene. The method according to claim 1,
The ionic liquid,
Anionic liquids containing an imidazole functional group, ionic liquids containing a sulfonyl imide functional group, 1-ethyl-3-methylimidazolium bis trifluoromethylsulfonylimide (EMBI), 1-ethyl- Ethyl-3-methylimidazolium tetrafluoroborate, and 1-ethyl-3-methylimidazolium hexafluorophosphate, and 1-ethyl-3-methylimidazolium tetrafluoroborate. / RTI &gt; The method of manufacturing an adhesive smart window film. The method according to claim 1,
Wherein the first polymer base layer comprises:
But are not limited to, polyester, polyethyleneterephthalate, polyphenylenesulfide, polystyrene, polyamide, polycarbonate, polymethyl methacrylate, polyethylene terephthalate, polyethylene terephthalate, Wherein the film is made of one of polyethyleneaphthalate, polyethylene and polypropylene. The method according to claim 1,
Wherein the second polymer base layer comprises:
But are not limited to, polyester, polyethyleneterephthalate, polyphenylenesulfide, polystyrene, polyamide, polycarbonate, polymethyl methacrylate, polyethylene terephthalate, polyethylene terephthalate, Wherein the film is made of one of polyethyleneaphthalate, polyethylene and polypropylene. The method according to claim 1,
Preferably,
Acrylic, epoxy, and urethane adhesives. The method of claim 1, wherein the adhesive is a silicone adhesive. A sticky smart window film produced by the method of any one of claims 1, 6, 8 to 12.
delete delete delete delete delete delete delete
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KR101986348B1 (en) 2017-12-15 2019-06-05 성문전자주식회사 Color-changing film for smart window that can be colored more than two colors
KR101939054B1 (en) 2018-04-05 2019-01-16 (주)베스트룸 Method for forming electrodes on film for smart window film and smart window film using it
KR102084777B1 (en) 2018-10-29 2020-03-04 성문전자주식회사 Electrochromic film for smart window

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