JP6997812B2 - Electrochromic devices and methods for manufacturing electrochromic devices - Google Patents

Description

The present invention relates to the field of a device whose color changes under the influence of an electric current, and more particularly to an electrochromic device and a method for manufacturing the same. Various methods are known in the art for manufacturing devices with electrically adjustable light absorption properties, such as variable optical density filters, light modulators, information boards, and image display panels.

Electrochromism is a physical phenomenon found in a particular composition in which certain optical properties, such as color or light transmittance, change reversibly with the application of a voltage called a control voltage. Electrochromism provides the basis for the operation of various electrochromic devices such as smart glasses well known to those of skill in the art. Various types of optical materials and structures can be used to construct the aforementioned compounds with electrochromic properties, the particular structure of which depends on the particular purpose of the electrochromic device.

One method for manufacturing electrochromic devices is known in the art (US Pat. No. 4,902,108, issued February 20, 1990, incorporated herein by reference). Book), where the conductive coating of one of the two light-transmitting electrodes is coated with a thickened solution of polymethylmethacrylate in a low boiling solvent, which is then evaporated. , A layer of polymethylmethacrylate is obtained. Following this step, both light transmissive electrodes are bonded to each other in the surroundings, while the electrodes are spaced apart from each other by a predetermined distance, and the space thus formed contains a cathode component and an anode component. The electrochromic solution is used to fill through the openings (s) in the adhesive and the filled space is then sealed. The layer of polymethylmethacrylate is dissolved, resulting in thickening of the electrochromic solution, which significantly reduces the negative effect of gravity "delamination" of the composition in the electrically colored state. Therefore, this electrochromic composition is actually prepared only after the assembly of the above-mentioned electrochromic device is completed. In addition, the electrochromic composition is a liquid phase having a viscosity defined by the amount of the polymer thickener and is introduced into the electrochromic solution if the cathode and anode components are not soluble in the ionic state. A neutral electrolyte solution provides the conductivity of the electrochromic solution. The neutral electrolyte is introduced into the composition based on the quaternary salt of bipyridine.

One method for manufacturing electrochromic devices is further known in the art (US Pat. No. 5,471,337 issued November 28, 1995, incorporated herein by reference). Specified), where the space between the electrodes is filled with an electrochromic dispersion system including: A dispersion medium in the form of a solvent, a dispersed phase in the form of a polyoxometallate as a cathode component, and an anode component, thickened with polymethylmethacrylate or plasticized with a polymer solvent.

A method for making an electrochromic device by obtaining a solid-like film of an electrochromic composition directly into the device itself, using various types of initiators, either by polymerization alone and / or by polymerization with cross-linking of monomer chains. Is also known (Japanese Patent Application Publication No. 0612826A1 of August 31, 1994, incorporated herein by reference, International Publication No. 97/34186 of September 18, 1997). , And International Publication No. 98/42796, October 1, 1998). However, such a polymerization reaction is accompanied by volume shrinkage that adversely affects the quality of the electrochromic device. This negative effect can be particularly apparent in electrochromic devices with large interelectrode spaces (1 mm to 2 mm) that are usually provided in electrochromic devices with large machined surfaces (greater than 0.5 m2).

One for manufacturing flexible electrochromic panels disclosed in US Pat. No. 7,826,124 B2, issued October 2, 2008, incorporated herein by reference. The method is further known in the art, where an insoluble polymer chain of organic material is applied to one of the electrodes by electrochemical polymerization and an ion that interacts with the polymer chain of the first electrode. A storage film is applied onto the counter electrode. A significant drawback of this technique is that a liquid electrolyte is required for effective interaction between the two layers deposited on the flexible electrode. On the other hand, the presence of the liquid electrolyte requires additional effort and / or structure to maintain the electrochromic panel to a certain thickness, resulting in significant both the structure and the method of device manufacturing. It gets complicated.

Moreover, the flexible electrochromic panels disclosed in US Pat. No. 7,256,925 B2, issued July 10, 2006, incorporated herein by reference. One method for this is further known in the art, the patent of which is to locally coat a semiconductor layer onto one of the electrodes, the semiconductor layer then having an electrochromic composition. Includes being coated with an object. However, this design also requires the use of a liquid electrolyte between the electrochromic layer and the counter electrode, which causes the same problems as described above.

Therefore, there is a need for new and improved methods for the manufacture of electrochromic devices that do not have the above-mentioned defects of the prior art.

The methods of the invention relate to methods and systems that substantially eliminate one or more of the above and other problems associated with conventional methods of manufacturing electrochromic devices.

According to one aspect of the embodiments described herein, an electrochromic device comprising at least two flexible electrodes and a sealed and closed space between the at least two flexible electrodes. Is provided, at least one of the at least two flexible electrodes is light transmissive, and the sealed and closed space between the at least two flexible electrodes is electro. Filled with a chromic composition, the method is to prepare an early degassed electrochromic composition in the form of an electrochromic dispersion system comprising (1) at least one of a suspension and a colloid. The dispersion medium of the electrochromic dispersion system includes an electrochromic solution containing a liquid solvent (high temperature solvent and low temperature solvent), a cathode component and an anode component, and the dispersed phase is made of a highly dispersible polymer (2). ) At least one flexible electrode is made so that a conductive coating can be applied onto the polymer substrate in the form of an arbitrarily shaped interconnected conductive layer, and (3) said flexible electrode. To coat two or at least one of these with an initial electrochromic composition and (4) remove the cold solvent to form a solid, uniformly uniform electrochromic layer. The initial electrochromic composition applied onto the flexible electrode (s) is dried and (5) one flexible electrode is stitched (laminated) with a second flexible electrode. That is, the electrochromic layer faces inward, (6) the flexible electrode is connected to an energized electric bus (contact), and (7) the panel is sealed around. Including that. In order to reduce the adverse effects of atmospheric oxygen on the electrochromic composition, all procedures relating to the manufacture and assembly of electrochromic panels are preferably carried out in the atmosphere of an inert gas such as argon, nitrogen or carbon dioxide.

In various embodiments, electrochromic panels are manufactured using flexible light transmissive electrodes, including polymer (particularly polyethylene terephthalate) or glass substrates coated on one side with a transparent conductive coating. Will be done. The coating of the polymer substrate may be produced, for example, by applying a doped indium oxide (In ₂ O ₃ ), a doped tin oxide (SnO ₂ ) or a metal mesh, or both at the same time. The conductive coating is applied to the polymer substrate in the form of arbitrary shapes of interconnected layers. The application of the transparent conductive coating may be performed by vacuum deposition of a film of metal, metal oxide, metal nitride through a template, or by printing with a conductive ink.

In various embodiments, the final configuration of the electrochromic panel is determined by the composition of layers of conductive coatings placed on the polymer substrate that are electrically isolated from each other and may be of arbitrary shape. .. For example, by using the above-mentioned conductive layer having a square shape, it becomes possible to manufacture the electrochromic panel having a matrix shape.

Additional embodiments relating to the invention are described in part in the following description, which are in part clarified from this description or can be known by practicing the invention. Aspects of the present invention can be realized and achieved by using the elements particularly pointed out in the following detailed description and the appended claims and combinations and embodiments of various elements.

It should be understood that both the above description and the following description are illustrative and descriptive and are not intended to limit the claimed invention or its application in any way. ..

The accompanying drawings, which are incorporated herein by reference and constitute a portion thereof, serve to illustrate embodiments of the present invention, and together with this description, explain and illustrate the principles of the art of the present invention.

8 shows an embodiment of an electrochromic panel having two light transmissive electrodes in the form of 25 interconnected conductive square shaped portions.

In the following detailed description, the attached drawings (s) will be referred to. In the accompanying drawings, the same functional elements are shown using similar numbers. The above-mentioned accompanying drawings show specific embodiments and implementations consistent with the principles of the invention as examples, not limitations. These implementations are described in sufficient detail to allow one of ordinary skill in the art to implement the invention, even if other implementations are utilized without departing from the scope and spirit of the invention. It should be understood that it is okay, and that structural changes and / or replacement of various elements may be made. Therefore, the following detailed description should not be construed in a limited sense.

According to one aspect of the embodiments described herein, an electrochromic device comprising an electrochromic composition in the form of a solid polymer layer is provided, wherein the solid polymer layer has an increased fading rate over a wide temperature range. It imparts stability to electrochromic devices that are internal and that operate under conditions that maintain long-term coloring and enable low voltage control and changes in electrode polarity. This provides long-term uniformity of coloration and fading, especially for electrochromic devices with large processing surface areas. Exemplary electrochromic compositions that can be used in connection with the described electrochromic devices are the co-pending "electrochromic compositions and ELECTROCHROMICs using them" which are incorporated herein by reference. COMPOSITION AND ELECTROCHROMIC DEVICE USING SAME) ”is disclosed in the international application PCT / US15 / 54335.

According to another aspect of the embodiments described herein, as described above, an electrochromic device comprising at least two electrodes is provided, wherein the electrodes are flexible and light transmissive and are electrodes. The space between them is sealed and filled with the prepared electrochromic composition. The device described is capable of achieving long-term stability of the tinted state and operating under conditions that allow low voltage control and reversal of electrode polarity, resulting in color and fading uniformity. In addition, the described electrochromic devices can be manufactured to have a large surface area.

According to one or more aspects of the invention, at least two electrodes that are flexible and light transmissive are included with a sealed and closed space between the electrodes filled with an electrochromic composition. By manufacturing an electrochromic device, an electrochromic panel can be obtained. According to one or more aspects, the method of the invention comprises the following steps.

(1) A step of preparing an initial electrochromic composition in the form of an electrochromic dispersion system containing a suspension and / or a colloid. Here, the dispersion medium includes a high-temperature liquid solvent, a low-temperature liquid solvent, a cathode component, and an anode component. The dispersed phase contains a finely divided polymer. The initial electrochromic compositions have a relatively low viscosity and are various methods well known in the art such as gravity diffusion, substrate immersion coating, roll coating, dip coating, spin coating, flow coating and the like. Suitable for coating with.

(2) A step of manufacturing at least one of flexible electrodes so that a conductive coating can be applied onto a polymer substrate in the form of an arbitrarily shaped, interconnected conductive layer. The second flexible electrode is optionally manufactured in the same manner or made into a solid (being made solid). (3) A step of coating at least one of the flexible electrodes with an initial electrochromic composition. (4) The initial electrochromic composition coated on the flexible electrode (s) is dried in order to remove the cold solvent and form a solid, uniformly uniform electrochromic layer. Process. (5) A step of stitching (laminating) one flexible electrode with a second flexible electrode. The second flexible electrode is optionally made with a solid uniform electrochromic layer. (6) A step of connecting the flexible electrode to the conductive bus. And (7) a step of sealing the electrochromic panel over the periphery.

In one or more embodiments, the electrochromic solution described above may include the addition of a neutral electrolyte. The provision of a neutral electrolyte introduced in addition to the dispersion medium accelerates the fading of the electrically activated electrochromic device, allowing the electrochromic device to operate under long-term polarization conditions due to the application of a DC voltage. Violation of uniformity in coloration and fading is prevented after the application and / or after applying a high voltage (excess voltage, breakdown voltage).

In one or more embodiments, a solid but acceptable electrochromic composition characterized by a lack of brittleness when bent, capable of providing flexibility and retaining its integrity over a wide temperature range. It is desirable to use the finely divided polymer and the hot solvent in sufficient quantity and proportion to form the flexible layer.

In one or more embodiments of the method, the cold solvent is electrochromic onto various substrates by known industrial methods such as gravity diffusion, substrate immersion coating, roll coating, dip coating, spin coating, flow coating and the like. It is used to impart low viscosity to the initial electrochromic composition to allow layer formation.

In one or more embodiments, a solid but flexible electrochromic layer is formed on the substrate after the cold solvent has been removed (eg, by evaporation by thermal evaporation or the like).

In one or more embodiments, one or both of the cold and hot solvents described above may comprise individual chemical compounds or mixtures of chemical compounds.

In one or more embodiments, the cathode component is an individual organic electrochromic compound having at least one reversible reducing wave in the polarogram, or a mixture of such organic electrochromic compounds. The anode component is an individual organic electrochromic compound having at least one reversible oxidation wave in the polarogram, or a mixture of organic electrochromic compounds.

In one or more embodiments, the compound may further comprise a UV stabilizer that protects the electrochromic compound from UV irradiation. The compound may also include an antioxidant that protects the electrochromic compound from the adverse effects resulting from its exposure to oxygen.

In one or more embodiments, all procedures relating to the manufacture and assembly of the electrochromic device are carried out in the atmosphere of an inert gas such as argon, nitrogen, carbon dioxide. This reduces the adverse effects of atmospheric oxygen on the electrochromic composition.

In one or more embodiments, the electrochromic device described above uses a transparent conductive layer such as doped indium oxide (In ₂ O ₃ ) or doped tin oxide (SnO ₂ ) or metal mesh. Manufactured by using a flexible light-transmitting electrode consisting of a side-coated polymer (eg, polyethylene terephthalate) substrate or glass substrate. Such coatings may be used individually or in combination. In order to prevent contact between the electrodes, the electrodes are such that the conductive coating appears inside a closed space formed between the electrodes and filled with the electrochromic layer. Be sealed. The distance between the electrodes is determined by the thickness of the solid electrochromic layer obtained after the electrochromic liquid composition has been dried.

In one or more embodiments of the manufacture, the electrochromic device comprises a conductive bus disposed over the outer circumference of the electrode or along the long sides of the electrode. These conductive buses may be located just outside or just inside the device, with externally located output wires or other types of electrical contacts or connectors.

FIG. 1 shows an embodiment of an electrochromic panel with two light transmissive electrodes in the form of 25 conductive, mutually isolated square shaped portions. A cross section of the electrochromic panel is also shown. The illustrated electrochromic panel comprises a flexible light transmissive square shaped electrode 2 applied to a pair of substrates 3 in an amount of 25 for each substrate. The substrate 3 is a polymer film, the surface area of which depends on the particular use of the electrochromic panel. The space between the substrates 3 on which the square-shaped light-transmitting electrode 2 is coated on the surface is filled with the electrochromic layer 1.

In one or more embodiments, the conductive bus 7 is routed around the electrochromic panel or along some sides. The dimensions of these conductive baths 7 depend on the amount of conductive layer that may have any shape. Alternatively, a double conductive bath 7 can be used for each of the upper and lower transparent conductive electrodes. The cross-sectional diameter of the bus conductor 8 forming the bus 7 is determined based on the area occupied by the arbitrary shape conductive layer 2 and the characteristics of the electrochromic layer 1.

The conductive arbitrary shape layer 2 arranged along the peripheral portion of the electrochromic panel is directly electrically connected to the corresponding conductors of the eight conductive buses 7. The device also includes a conductive contact line 9 for connecting an internal conductive arbitrary shape layer 2 not located in the peripheral portion of the electrochromic panel to each bus (wire). Each conductive contact wire 9 is guided to one conductive arbitrary shape layer and is insulated from the other wires. The other end of each of the conductive contact lines is connected to a predetermined conductor 8 of the conductive bus 7.

In one or more embodiments, the electrochromic layer 1 is located between the transparent conductive electrodes. The electrochromic layer may be continuous without a break at the boundary of the arbitrary shape conductive layer 2. The thickness of the electrochromic layer is determined based on the properties of the electrochromic composition and the requirements for the electrochromic panel. The electrochromic layer may differ in composition and properties in different portions corresponding to different arbitrary shaped conductive layers. Therefore, the electrochromic layer may be colored differently in different portions corresponding to different arbitrary shape conductive layers. The electrochromic layer may differ in composition and properties within the area of the portion of the conductive layer corresponding to the particular conductive arbitrary shape layer. Thus, the electrochromic layer may be colored differently within the area of one portion corresponding to a predetermined conductive arbitrary shape layer.

In one or more embodiments, the conductive arbitrary shaped layers arranged around the electrochromic panel may be connected using a conductive compound 11. The conductive contact line 9 may also be connected to the internal conductive arbitrary shape layer (not located in the peripheral portion of the panel) by using the conductive compound 11.

In one or more embodiments, sealing the electrochromic layer of the electrochromic panel is by adhering a loop around the perimeter of the panel or allowing atmospheric oxygen to enter the electrochromic layer. This is done by using a sealant to prevent.

In one or more embodiments, an adhesive layer 5 that ensures adhesion of the electrochromic panel to the glass may be applied onto the panel facing side of the electrochromic panel. The adhesive layer 5 that ensures adhesion of the electrochromic panel to the glass may be coated with a peelable protective film 6. Before attaching the electrochromic panel to the glass, the protective film 6 is removed. Any other adhesive tape may be used in place of the adhesive layer 5.

In one or more embodiments, the transparent conductive electrode of the electrochromic panel facing outward may also be coated with the protective layer 4. The protective layer 4 may include a layer that protects the electrochromic panel from mechanical influences as well as UV and IR irradiation. The use of a single layer that combines all of these protective properties is also an option.

FIG. 1 shows an exemplary embodiment of a design in which the electrochromic panel has a conductive layer having a square configuration. In such a design, the electrochromic panel has a common electrochromic layer 1 disposed between two flexible transparent conductive electrodes. Each transparent conductive electrode contains a polymer substrate 3 coated with a conductive metal mesh 2 divided into square portions. A total of 25 square conductive portions are used.

The conductive bus 7 is arranged over the peripheral portion (periphery) of the electrochromic panel. Each such bus 7 includes 6 or 7 conductive wires 8.

The square conductive portion 2 arranged over the peripheral portion (periphery) of the panel is connected to the conductive bus 7 using the compound 11, and the square conductive portion located inside the electrochromic panel is a conductive contact line. 9 is connected around the electrochromic panel. Along the perimeter of the electrochromic panel, the conductive contact line 9 is connected to the bus wire 8 using the conductive compound 11.

The gaps between the square conductive portions 2 are filled with the insulating compound 10.

One of the flexible transparent conductive electrodes of the electrochromic panel is coated with an adhesive layer 5, and the adhesive layer 5 is then coated with a protective film 6. Another flexible transparent conductive electrode of the electrochromic panel is coated with the protective layer 4.

The conductive bus 7 arranged over the peripheral portion (periphery) of the electrochromic panel is connected to a control unit / power supply (not shown) that supplies the required voltage and current to each square conductor portion 2.

Example 1
In the first embodiment, the electrochromic device was made with two flexible light transmissive electrodes. Each flexible electrode was a polyethylene terephthalate substrate with a thickness of 175 microns and was coated with a single layer of indium-doped SnO ₂ with a surface electrical resistance of 30 ohms / cm ² . It contained a polyethylene terephthalate substrate. The size of each electrode was 5 × 6 cm ² . One electrode was uniformly coated with an electrochromic composition containing the following components: Viologen derivatives (1.5% by weight) and ferrocene derivatives (0.75% by weight) in propylene carbonate and / or acetone in a solvent, and a copolymer of polymethylmethacrylate and methacrylic acid and a calcium salt of methacrylic acid. Dispersed phase (35% by weight). The electrochromic composition was dried over 20 hours to form a solid electrochromic layer on the flexible electrode having a thickness of 100 microns. The second flexible electrode was then laminated onto the dried electrochromic layer at a temperature of 100 ° C. with an offset of 5 mm with respect to the first layer. A copper tape connectable to the leads of the control / power unit was then applied using the conductive adhesive composition to the uncoated area of the flexible electrode facing the conductive coating.

In this embodiment, the electrochromic device had a light transmittance equal to 75% in the visible range of the spectrum. When a 2V DC current was applied to the device, its color changed to deep blue. The time required for the color to completely change from transparent to deep blue was 7 seconds. After the end of the transient period, the application of voltage was stopped and the electrodes were shorted. The electrochromic device returned to its original (transparent) state within about 10 seconds.

Example 2
In a second embodiment, the electrochromic device was coated with a metallic copper mesh in which each flexible electrode had a cell size of 300 microns and a surface electrical resistance equal to 2 ohms / cm ² . It was produced in the same manner as described in Example 1, except that it contained a polyethylene terephthalate substrate having a thickness of 100 microns.

In this embodiment of the electrochromic device, the light transmittance in the visible range of the spectrum was 80%. When a DC 2V current was applied to the device, the color of the electrochromic layer changed to deep blue. The time required for the color to completely change from transparent to deep blue was 4 seconds. After the end of the transient period, the application of voltage was stopped and the electrodes were shorted. The electrochromic device returned to its original (transparent) state within about 6 seconds.

Example 3
In a third embodiment, the electrochromic device was manufactured in the same manner as described in Example 2, except that the electrochromic composition was evenly applied to each electrode in half the amount. After drying the electrochromic layer, the flexible electrodes were laminated with the applied layers facing each other. Such treatment makes it possible to obtain an electrochromic device in which the electrochromic layer is uniformly adhered to the flexible electrode.

In this embodiment, the electrochromic device had a light transmittance equal to 80% in the visible range of the spectrum. When a DC 2V current was applied to the device, the color of the electrochromic layer changed to deep blue. The time required for the color to completely change from transparent to deep blue was 4 seconds. After the end of the transient period, the application of voltage was stopped and the electrodes were shorted. The electrochromic device returned to its original (transparent) state within about 6 seconds. In this case, the electrochromic layer showed a more uniform color than that of the device described in Example 2.

Example 4
In a fourth embodiment, the electrochromic device is metallic in which one of the flexible electrodes is four bands, each of which is divided into four bands having dimensions of 3 × 10 cm ² . It was manufactured in the same manner as described in Example 3 except that it contained a polyethylene terephthalate substrate coated with a copper mesh, having a size of 12 × 10 cm ² and a thickness of 100 microns. The second flexible electrode contained a polyethylene terephthalate substrate with dimensions of 12 x 10 cm ² coated with a continuous metallic copper mesh. In the finished state, the flexible electrode having a continuous copper mesh is connected to one wire of the bus, and each flexible copper band of the second flexible electrode is the bath. Connected to a separate wire of.

In this embodiment of the electrochromic device, the flexible electrode with a continuous copper mesh gained zero potential, whereas each copper band of the second flexible electrode was -2V, 0,. Alternatively, it was possible to supply + 2V individually. When any of the bands received -2V or + 2V, the electrochromic layer of this band changed its color to deep blue within 5 seconds. The voltage change to the opposite voltage results in a fading of up to 50% of the initial darkening of each band within 2 seconds, followed by a deep blue color over a period of about 2 seconds. Recovery was brought about.

Example 5
In a fifth embodiment, in the electrochromic device, one of the flexible electrodes is a metallic copper mesh coated on the flexible electrodes and has a dimension of 2.6c 2.6 cm ² , respectively. The same method as described in Example 4, except that it contained a polyethylene terephthalate substrate having a size of 10 × 10 cm ² and a thickness of 100 microns, having a metallic copper mesh divided into nine squares. Manufactured in. The square located in the middle had contact lines arranged in the gaps between the other squares and guided to a contact pad located on the edge of the flexible electrode. The second flexible electrode contained a polyethylene terephthalate substrate with dimensions of 10 × 10 cm ² coated with a continuous metallic copper mesh. In the finished state, the flexible electrode having a continuous copper mesh is connected to one wire of the bus, and each flexible copper band of the second flexible electrode is the bath. Connected to a separate wire of.

In this embodiment of the electrochromic device, the flexible electrode having a solid copper mesh is set to zero potential, whereas the square copper electrodes of the second flexible electrode are -2V, 0. , Or it was possible to receive the potential of + 2V individually. When any of the squares received a potential of -2 or +2, the color of the electrochromic layer in each band changed to deep blue within 4 seconds. To accelerate the fading of any square portion of the electrochromic device, an opposite potential is first applied to provide 50% fading, which is then shorted to the second flexible electrode. Was done. In this case, the fading of each square portion was performed within 4 seconds.

Finally, it should be understood that the processes and techniques described herein are not inherently relevant to any particular device and may be implemented by any suitable combination of components. .. In addition, various types of general purpose equipment may be used according to the teachings described herein. It may also prove advantageous to build dedicated equipment to perform the steps of the methods described herein. Although the present invention has been described in the context of specific embodiments, the embodiments are intended to be exemplary rather than limiting in all respects.

Moreover, by reviewing the specification and practicing the invention disclosed herein, other implementations of the invention will become apparent to those skilled in the art. The various embodiments and / or components of the described embodiments are used alone or in any combination in the method of making an electrochromic composition for use in an electrically controlled device with light absorption. May be used. The present specification and examples are considered as illustrative only, and the true scope and spirit of the invention is intended to be illustrated by the claims.
Another aspect of the present invention may be as follows.
[1] A method for manufacturing an electrochromic device including at least two flexible electrodes and a sealed and closed space between the at least two flexible electrodes, wherein the at least two flexible electrodes are flexible. At least one of the sex electrodes is light transmissive, the sealed and closed space between the at least two flexible electrodes is filled with an electrochromic composition, and the method is (1). 1) To prepare an initial electrochromic composition in the form of an electrochromic dispersion system containing at least one of a suspension and a colloid, wherein the dispersion medium of the electrochromic dispersion system is a high temperature solvent, a low temperature solvent, and a cathode component. It contains an electrochromic solution containing and an anode component, the dispersed phase of the electrochromic dispersion system contains a highly dispersible polymer, and (2) the sealed closure between the at least two flexible electrodes. The space is filled with a dried electrochromic composition and (3) the sealed and closed space between the at least two flexible electrodes is sealed. How to make an electrochromic device.

Claims (1)

A method of manufacturing an electrochromic panel comprising two flexible electrodes and a sealed and closed space between the two flexible electrodes, at least one of the two flexible electrodes. One is light transmission, the sealed and closed space between the two flexible electrodes is filled with an electrochromic composition, the method.
(1) To prepare an initial electrochromic composition in the form of an electrochromic dispersion system containing at least one of a suspension and a colloid, wherein the dispersion medium of the electrochromic dispersion system is a high temperature solvent, a low temperature solvent, and a cathode. It contains an electrochromic solution containing a component and an anode component, and the dispersed phase of the electrochromic dispersion system contains a finely divided polymer.
(2) At least one of the two flexible electrodes is prepared so that the conductive coating is applied onto the polymer substrate in the form of an arbitrary shape of mutually insulated conductive layer or portion. That and
(3) At least one of the flexible electrodes is coated with an initial electrochromic composition.
(4) The initial electrochromic composition coated on the flexible electrode (s) is dried in order to remove the cold solvent and form a solid, uniformly uniform electrochromic layer. That and
(5) Laminating one flexible electrode having the dried electrochromic composition with the other flexible electrode,
(6) Connecting all the layers or parts of the flexible electrode to the conductive bath, and
(7) Sealing the sealed and closed space between the two flexible electrodes.
How to manufacture electrochromic panels , including.

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