JP7377422B2 - Light control device, light control window, and manufacturing method of light control device - Google Patents

Description

The present invention relates to a light control device, a light control window using the light control device, and a method for manufacturing a light control device.

A light control window, which is a window with a light control function, is configured so that it can be switched between a transparent state and an opaque state by voltage control. Light control windows have been praised for their excellent design and concealability, and are increasingly being used in buildings and transportation facilities.

Conventionally, in a light control device used in a light control window, a light control sheet comprising a light control layer, which is a structural part having a light control function, and a pair of transparent electrode layers sandwiching the light control layer, is sandwiched between laminated glass. (See Patent Document 1). Such a light control device is formed by sandwiching a light control sheet between two sheets of glass and fixing them by vacuum pressure bonding or thermocompression bonding.

Japanese Patent Application Publication No. 08-184273

However, in order to integrate the two plate-shaped members by sandwiching the light control sheet between them, it is necessary to apply a load such as pressure as described above, so large-scale equipment is required to manufacture the light control device. It takes. On the other hand, if the surface of the light control sheet is exposed to the outside air, the surface is likely to be affected by physical or chemical stimuli.

An object of the present invention is to provide a light control device, a light control window, and a method for manufacturing a light control device that can protect a light control sheet with a structure that can be easily manufactured.

A light control device that solves the above problem includes a light control sheet including a light control layer and a pair of electrode sheets sandwiching the light control layer, and a barrier portion having a portion covering an upper surface of the light control sheet. The barrier portion is a cured product of glass paint supplied toward the light control sheet.

According to the above configuration, the upper surface of the light control sheet is protected by the barrier portion, and chemical substances such as moisture and alcohol are prevented from entering the light control sheet from the upper surface. Then, the barrier portion is formed by curing the glass paint. Therefore, it is easier to manufacture a light control device with a protected light control sheet compared to a manufacturing method in which a light control sheet is sandwiched and fixed between plate-shaped members such as laminated glass. can.

The above configuration may further include a support base material, and the lower surface of the light control sheet may be attached to the support base material.
According to the above configuration, the lower surface of the light control sheet is protected by the support base material, and the upper surface of the light control sheet is protected by the barrier part. The support base material is then bonded to the light control sheet, and the barrier portion is formed by curing the glass paint. Therefore, it is easier to manufacture a light control device in which a light control sheet is protected by being sandwiched between two members, compared to a manufacturing method in which a light control sheet is sandwiched and fixed between plate-shaped members. I can do it.

In the above configuration, the electrode sheet includes a transparent resin layer and a transparent electrode layer located between the transparent resin layer and the light control layer, and the light control device covers the upper surface of the light control sheet. A primer layer may be provided between the transparent resin layer and the barrier portion.

According to the above configuration, the adhesion between the light control sheet and the barrier portion is improved.
In the above configuration, the barrier portion may have a portion on the support base material that covers a side surface of the light control sheet.

According to the above configuration, chemical substances such as moisture and alcohol are prevented from entering the interior of the light control sheet from the side surface of the light control sheet.
In the above configuration, of the first electrode sheet and the second electrode sheet that are the pair of electrode sheets, the electrode sheet located on the same side as the support base material with respect to the light control layer is the second electrode sheet. , the light control sheet has a second region in which the transparent electrode layer of the second electrode sheet is exposed from the light control layer and the first electrode sheet, and the light control device has a second region where the transparent electrode layer of the second electrode sheet is exposed from the light control layer and the first electrode sheet; A second terminal portion is provided for connecting the transparent electrode layer of the sheet and a power source, the second terminal portion is fixed to the transparent electrode layer in the second region, and the barrier portion is connected to the second terminal portion. and a portion covering the transparent electrode layer exposed around the second terminal portion.

According to the above configuration, the vicinity of the second terminal portion is protected from impacts and the like by the barrier portion. Further, moisture and the like can be prevented from entering the interior of the light control sheet from the vicinity of the second terminal portion.
In the above configuration, of the first electrode sheet and the second electrode sheet that are the pair of electrode sheets, the electrode sheet located on the opposite side of the support base material with respect to the light control layer is the first electrode sheet, The light control sheet has a first region in which the transparent electrode layer of the first electrode sheet is exposed from the light control layer and the second electrode sheet, and the light control device has a first region where the transparent electrode layer of the first electrode sheet is exposed from the light control layer and the second electrode sheet. a first terminal portion for connecting the transparent electrode layer and a power source, the first terminal portion is fixed to the transparent electrode layer in the first region, and the barrier portion is fixed to the transparent electrode layer in the first region and the power source. The device may include an embedded portion that fills a space between the first terminal portion and the support base material.

According to the above configuration, the vicinity of the first terminal portion is protected from impacts and the like by the barrier portion. Further, it is also possible to prevent moisture and the like from entering the interior of the light control sheet from the vicinity of the first terminal portion.
In the above configuration, the barrier portion has a portion located on the supporting base material outside the light control sheet when viewed from a position facing the upper surface of the light control sheet, and has a portion located on the outside of the light control sheet on the supporting base material, and is connected to the embedded portion and the outside. The positioned portions may be in contact with each other with an interface.

According to the above configuration, since the embedded part and the part covering the side surface are formed separately, the embedded part is formed before pasting the light control sheet on the support base material, and the light control sheet is pasted on the support base material. After application, a portion covering the side surface can be formed. Therefore, the embedding part is easier to manufacture than the case where the embedding part is formed by pasting the light control sheet on the support base material and then filling the gap between the light control sheet and the support base material.

In the above configuration, of the first electrode sheet and the second electrode sheet that are the pair of electrode sheets, the electrode sheet located on the opposite side of the support base material with respect to the light control layer is the first electrode sheet, The light control sheet has a first region in which the transparent electrode layer of the first electrode sheet is exposed from the light control layer and the second electrode sheet, and the light control device has a first region where the transparent electrode layer of the first electrode sheet is exposed from the light control layer and the second electrode sheet. a first terminal portion for connecting the transparent electrode layer and a power source, the first terminal portion being fixed to the transparent electrode layer in the first region, the first region and the first terminal; The device may further include an adhesive portion located between the support base material and the supporting base material.

According to the above configuration, the first region and the first terminal portion are attached to the support base material via the adhesive portion. Therefore, the light control sheet is firmly fixed to the support base material.
In the above configuration, the upper surface of the light control sheet may be a curved surface or a surface having unevenness.

According to the above configuration, even if the upper surface of the light control sheet is not flat, the barrier part is formed by curing the glass paint, so it is easy to form a barrier part having a shape that follows the shape of the light control sheet. can.

A light control window that solves the above problem includes the light control device described above.
According to the above configuration, a light control window using a light control device having a light control sheet protection structure that can be easily formed is realized. In particular, in a light control window in which a large light control device is used, the burden required to manufacture the light control device is greatly reduced.

A method for manufacturing a light control device that solves the above problems includes supplying glass paint toward the light control sheet including a light control layer and a pair of electrode sheets sandwiching the light control layer, and curing the glass paint. include.

According to the above manufacturing method, a barrier portion that protects the surface of the light control sheet is formed by supplying and curing the glass paint. Therefore, it is easier to manufacture a light control device with a protected light control sheet compared to a manufacturing method in which a light control sheet is sandwiched and fixed between plate-shaped members such as laminated glass. can.

According to the present invention, the light control sheet can be protected with a structure that can be easily manufactured.

FIG. 1 is a diagram showing a cross-sectional structure of a light control device according to a first embodiment. The figure which shows the cross-sectional structure of the light control device of 2nd Embodiment. FIG. 7 is a diagram showing a cross-sectional structure of a light control device according to a third embodiment. FIG. 7 is a diagram showing a cross-sectional structure near a second terminal portion in a light control device according to a fourth embodiment. FIG. 7 is a diagram showing a first form of a cross-sectional structure near a first terminal portion in a light control device according to a fourth embodiment. FIG. 7 is a diagram showing a second form of the cross-sectional structure near the first terminal portion in the light control device of the fourth embodiment. FIG. 7 is a diagram showing a manufacturing process of a second form of the cross-sectional structure near the first terminal portion in the light control device of the fourth embodiment. FIG. 7 is a diagram showing a manufacturing process of a second form of the cross-sectional structure near the first terminal portion in the light control device of the fourth embodiment. FIG. 7 is a diagram showing a third form of the cross-sectional structure near the first terminal portion in the light control device of the fourth embodiment. FIG. 7 is a diagram illustrating a manufacturing process of a third form of the cross-sectional structure near the first terminal portion in the light control device of the fourth embodiment. FIG. 7 is a diagram illustrating a manufacturing process of a third form of the cross-sectional structure near the first terminal portion in the light control device of the fourth embodiment. The figure which shows the cross-sectional structure of the light control device of a 1st modification. The figure which shows the cross-sectional structure of the light control device of a 2nd modification. The figure which shows the cross-sectional structure of the light control device of a 3rd modification. The figure which shows the cross-sectional structure of the light control device of a 4th modification. The figure which shows the cross-sectional structure of the light control device of a 5th modification. The figure which shows the cross-sectional structure of the light control device of a 6th modification. The figure which shows the cross-sectional structure of the light control device of a 7th modification. The figure which shows the cross-sectional structure of the light control device of the 8th modification. The figure which shows the cross-sectional structure of the light control device of a 9th modification.

(First embodiment)
A first embodiment of a light control device, a light control window, and a method for manufacturing a light control device will be described with reference to FIG.

As shown in FIG. 1, the light control device 10 of the first embodiment has a structure in which a light control sheet 7 is bonded to a support base material 6 via an adhesive layer 5. The light control sheet 7 consists of two transparent resin layers 2A, 2B each having a transparent electrode layer 3A, 3B formed on one side, arranged so that the transparent electrode layers 3A, 3B face each other, and a light control sheet 7 arranged between them. It is a laminate with an optical layer 4 sandwiched therebetween.

Specifically, the light control sheet 7 includes a light control layer 4, a first transparent electrode layer 3A and a second transparent electrode layer 3B that are a pair of transparent electrode layers, and a first transparent resin layer that is a pair of transparent resin layers. 2A and a second transparent resin layer 2B. The first transparent electrode layer 3A and the second transparent electrode layer 3B sandwich the light control layer 4, and the first transparent resin layer 2A and the second transparent resin layer 2B sandwich the light control layer 4 and the transparent electrode layers 3A, 3B. sandwiched between. The first transparent resin layer 2A supports the first transparent electrode layer 3A, and a first electrode sheet is constituted by the first transparent resin layer 2A and the first transparent electrode layer 3A. The second transparent resin layer 2B supports the second transparent electrode layer 3B, and the second transparent resin layer 2B and the second transparent electrode layer 3B constitute a second electrode sheet.

Then, the surface of the second transparent resin layer 2B opposite to the surface in contact with the second transparent electrode layer 3B is attached to the support base material 6 via the adhesive layer 5. That is, the second electrode sheet is located on the same side of the light control layer 4 as the support base material 6 and is attached to the support base material 6, and the first electrode sheet is attached to the light control layer 4 on the same side as the support base material 6. and is located on the opposite side to the supporting base material 6. Among the surfaces of the light control sheet 7, the surface attached to the support base material 6 is the lower surface of the light control sheet 7, and the surface opposite to the lower surface is the upper surface of the light control sheet 7. The lower surface is a surface constituted by the second transparent resin layer 2B, and the upper surface is a surface constituted by the first transparent resin layer 2A. When viewed from a position facing the upper surface of the light control sheet 7, the support base material 6 may have the same shape as the light control sheet 7, or may be larger than the light control sheet 7.

The upper surface of the light control sheet 7 is covered with a barrier portion 1 that is a cured product of glass paint. The barrier part 1 has a flat plate shape that spreads over the light control sheet 7 and is in contact with the upper surface of the light control sheet 7, and the side surface of the light control sheet 7 is exposed from the barrier part 1.

As described above, the light control device 10 includes the support base material 6, the adhesive layer 5, the light control sheet 7, and the barrier section 1.
[Transparent resin layer]
The material of the transparent resin layers 2A and 2B is not particularly limited. As the transparent resin layers 2A and 2B, a resin base material that is transparent in the visible light region can be suitably used. Examples of the resin material constituting the transparent resin layers 2A and 2B include polyethylene terephthalate, polyethylene, acrylic resin, polypropylene, etc., but the resin material is not limited to these.

[Transparent electrode layer]
As the transparent electrode layers 3A and 3B, thin films such as ITO (Indium Tin Oxide), zinc oxide, and tin oxide can be suitably used. To form these thin films, methods using various sputtering-type film forming apparatuses are often used because they provide high adhesion to the transparent resin layers 2A and 2B, but various vacuum evaporation methods and ion Plating methods can also be used. Further, the transparent electrode layers 3A and 3B may be composed of a polymer containing poly(3,4-ethylenedioxythiophene) (PEDOT) or a multilayer film containing an Ag alloy thin film.

[Dimmer layer]
Light control layer 4 contains a liquid crystal composition. The light control layer 4 is made of, for example, a polymer network liquid crystal (PNLC), a polymer dispersed liquid crystal (PDLC), or a capsule type nematic liquid crystal (NCAP). c Curvilinear Aligned Phase) etc. configured. Note that the light control layer 4 may contain a dye that has a predetermined color and does not hinder the movement of liquid crystal molecules. According to such a configuration, the light control sheet 7 having a predetermined color is realized.

When no driving voltage is applied to the transparent electrode layers 3A and 3B, the direction of the long axis of the liquid crystal molecules included in the light control layer 4 becomes irregular. Therefore, the light incident on the light control layer 4 is scattered, and the light control layer 4 becomes opaque. On the other hand, when a driving voltage is applied to the transparent electrode layers 3A and 3B, the liquid crystal molecules are oriented according to the potential difference between the transparent electrode layers 3A and 3B, and the long axis direction is aligned with the electric field direction between the transparent electrode layers 3A and 3B. The direction will be along. As a result, light easily passes through the light control layer 4, and the light control layer 4 becomes transparent.

[Supporting base material]
As the support base material 6, plate glass is suitably used. The type of plate glass is not particularly limited as long as it is a transparent glass plate, and plate glasses using various glasses such as soda lime glass can be suitably used. Moreover, the supporting base material 6 is not limited to plate glass, and a laminate of a plate glass and a resin base material or a single resin base material may be used.

[Barrier section]
The barrier portion 1 is formed by supplying glass paint to the light control sheet 7 and curing it. Glass paint is liquid glass, and is also called room temperature glass or liquid glass.

The glass paint is a one-component or two-component type silica solution, and can form a hard, amorphous ceramic film with excellent adhesion on various substrates by applying it at room temperature. Glass coatings include as components a liquid, solvent-free organopolysiloxane, a functional side-chain alkoxysilane, an ionized metal compound (organic or inorganic), a catalyst, and a binder resin.

In general, solid glass is manufactured by a melting method, whereas liquid glass coatings are manufactured by a sol-gel method. The cured product of glass paint is amorphous and has small differences in properties depending on direction. Therefore, since the cured product of glass paint is not prone to cracking only in a specific direction, even if a strong impact is applied to the barrier part 1, the cracks will spread widely along a specific direction. What happens is suppressed.

[Manufacturing method of light control device]
A method of manufacturing the light control device 10 will be explained. First, the light control sheet 7 is produced. In the light control sheet 7, a first transparent electrode layer 3A is formed on one surface of the first transparent resin layer 2A, and a second transparent electrode layer 3B is formed on one surface of the second transparent resin layer 2B. These are formed by arranging the first transparent electrode layer 3A and the second transparent electrode layer 3B facing each other, and forming and sandwiching the light control layer 4 therebetween.

Next, a glass paint is applied onto the first transparent resin layer 2A of the manufactured light control sheet 7, and the glass paint is hardened by hydrolysis and dehydration condensation reaction caused by moisture in the air, thereby forming the barrier part 1. is formed.

Next, an adhesive layer 5 is formed on the second transparent resin layer 2B of the light control sheet 7 by coating, and the light control sheet 7 is attached to the support base material 6 via the adhesive layer 5, thereby forming a light control device. 10 is formed.

Note that the manufacturing method of the light control device 10 is not limited to the above-described manufacturing method, except that the barrier portion 1 is formed by applying and curing a glass paint to the first transparent resin layer 2A.
[Dimmer window]
The light control window includes a light control device 10 within the window frame. A light control window is manufactured by first producing a light control device 10 and fitting the light control device 10 into a window frame. Alternatively, the barrier portion 1 can be formed by using the window glass of an existing window as the support base material 6, pasting the light control sheet 7 on the support base material 6 via the adhesive layer 5, and then applying glass paint. A light control window may be formed by. Alternatively, when the support base material 6 is a resin base material, the light control device 10 is pasted by pasting the support base material 6 on the window glass of an existing window, thereby forming a light control window. It's okay.

Note that the light control device 10 may be used not only for windows but also for partitions and glass walls.
[Effect]
In the light control device 10 of the first embodiment, since the light control sheet 7 is sandwiched between the support base material 6 and the barrier part 1, the lower surface of the light control sheet 7 is protected by the support base material 6, and the light control sheet 7 is sandwiched between the support base material 6 and the barrier part 1. The upper surface of 7 is protected by barrier section 1 . Furthermore, by covering the upper surface of the light control sheet 7 with the barrier portion 1, it is also possible to suppress the infiltration of chemical substances such as moisture and alcohol into the interior of the light control sheet 7 from the upper surface. Thereby, it is possible to effectively suppress the problem that the surface of the light control sheet 7 is easily affected by physical or chemical stimuli. The support base material 6 is bonded to the light control sheet 7 by the adhesive layer 5, and the barrier portion 1 is formed by applying and curing glass paint. Therefore, compared to a manufacturing method in which the light control sheet 7 is sandwiched and fixed between plate-shaped members such as laminated glass, the light control sheet 7 is protected by being sandwiched between two members. The optical device 10 can be easily manufactured. In particular, when the light control device 10 is large-sized, such as when used for windows, the load required for manufacturing the light control device 10 is greatly reduced.

Note that the above-mentioned influence due to physical stimulation means that the surface of the light control sheet 7 is scratched, for example, when the surface of the light control sheet 7 is composed of thin transparent resin layers 2A and 2B. In addition, the influence of chemical stimulation refers to, for example, when transparent electrode layers 3A and 3B made of ITO are used, the transparent electrode layers 3A and 3B deteriorate due to the infiltration of moisture, and more specifically, the influence of hydrolysis and A phenomenon in which conductivity is lost due to blackening.

If the support base material 6 is a plate glass, the protective effect of the light control sheet 7 will be enhanced and the infiltration of moisture etc. will be further suppressed compared to the case where the support base material 6 is a resin base material. On the other hand, if the support base material 6 is a resin base material, the weight of the light control device 10 can be reduced compared to the case where the support base material 6 is a plate glass.

When the light control sheet 7 is sandwiched and pressure-bonded between two plate-like members as in the past, local stress is generated within the light control sheet 7, so that the light control layer 4 may collapse in the light control sheet 7. As a result of such distortions, a short circuit between the transparent electrode layers 3A and 3B and a change in the optical properties of the light control sheet 7 are likely to occur. In contrast, in the light control device 10 of the first embodiment, since the light control device 10 can be formed without applying pressure to the light control sheet 7, short-circuiting of the transparent electrode layers 3A and 3B and the light control sheet 7 can be prevented. This suppresses changes in the optical properties of the optical properties.

Further, an interlayer film that is generally placed inside the laminated glass and functions as an adhesive layer causes deterioration of the liquid crystal composition included in the light control layer. Therefore, when the light control sheet 7 is sandwiched between laminated glasses, it is necessary to provide a layer on the light control sheet 7 that has a barrier function against the components of the interlayer film. However, providing such a barrier layer not only leads to increased manufacturing costs, but also causes a decrease in the appearance of the light control device due to the difference in refractive index between the barrier layer and the plate glass, leading to a decline in design. Ta. On the other hand, in the light control device 10 of the first embodiment, the intermediate film and its barrier layer are unnecessary, so that it is possible to suppress an increase in manufacturing cost and a decrease in design.

(Second embodiment)
With reference to FIG. 2, a second embodiment of a light control device, a light control window, and a method for manufacturing a light control device will be described. In the following, differences between the second embodiment and the first embodiment will be mainly described, and configurations similar to those in the first embodiment will be given the same reference numerals and explanations thereof will be omitted.

As shown in FIG. 2, the light control device 20 of the second embodiment differs from the first embodiment in that it includes a primer layer 8. The primer layer 8 is sandwiched between the first transparent resin layer 2A and the barrier section 1. In other words, the primer layer 8 and the barrier section 1 are located in this order on the upper surface of the light control sheet 7, and the barrier section 1 covers the upper surface of the light control sheet 7 through the primer layer 8.

[Primer layer]
The primer layer 8 has a function of increasing the adhesion between the barrier part 1 and the first transparent resin layer 2A. When a commercially available glass paint is used to form the barrier portion 1, the adhesion between the glass paint and the resin base material is not necessarily high enough. When the barrier portion 1 is formed from a glass paint that has low adhesion to the resin base material, it is preferable to provide the primer layer 8.

The material of the primer layer 8 is not particularly limited as long as it has high adhesion to glass or resin. For example, the primer layer 8 is composed of a primer containing a urethane resin as a main component and a silane coupling agent mixed therein. From the viewpoint of suppressing the influence on the light control sheet 7 in the step of forming the primer layer 8, it is preferable that the primer layer 8 is formed from a primer that can be cured by drying in an environment of normal temperature and normal humidity.

[Manufacturing method of light control device]
The method for manufacturing the light control device 20 of the second embodiment differs from the method for manufacturing the light control device 10 of the first embodiment in that a primer layer 8 is formed on the first transparent resin layer 2A before forming the barrier section 1. They differ in the way they are formed.

As a method for forming the coating film that will become the primer layer 8, coating methods such as spraying, bar coater, spin coater, dipping, and screen printing can be used, for example. For curing the coating film, ultraviolet irradiation, heat treatment, or the like may be used.

After forming the primer layer 8, a glass paint is applied onto the primer layer 8 toward the light control sheet 7 by coating and hardened. As a result, the barrier section 1 is formed.
Note that the light control device 20 of the second embodiment can be applied to a light control window similarly to the light control device 10 of the first embodiment.

[Effect]
According to the light control device 20 of the second embodiment, the following effects can be obtained in addition to the effects of the light control device 10 of the first embodiment. That is, since the primer layer 8 is provided between the first transparent resin layer 2A and the barrier section 1, the adhesion between the light control sheet 7 and the barrier section 1 is enhanced.

(Third embodiment)
A third embodiment of a light control device, a light control window, and a method for manufacturing a light control device will be described with reference to FIG. 3. In the following, differences between the third embodiment and the first embodiment will be mainly described, and the same components as those in the first embodiment will be given the same reference numerals and the description thereof will be omitted.

As shown in FIG. 3, the light control device 30 of the third embodiment has a first feature in that the side surface as well as the top surface of the light control sheet 7 are covered with a barrier portion 31 that is a cured product of glass paint. Different from the embodiment. Specifically, when viewed from a position facing the upper surface of the light control sheet 7, the support base material 6 is larger than the light control sheet 7, and the light control sheet 7 is located inside the support base material 6. The barrier section 31 is in contact with and covers the upper surface of the light control sheet 7, the side surface of the light control sheet 7, the side surface of the adhesive layer 5, and a part of the upper surface of the support base material 6. That is, the barrier section 31 covers the upper surface of the light control sheet 7 and surrounds the outside of the light control sheet 7 on the support base material 6 when viewed from a position facing the upper surface.

[Manufacturing method of light control device]
The manufacturing method of the light control device 30 of the third embodiment differs from the method of manufacturing the light control device 10 of the first embodiment in that the light control device 30 is manufactured by using a support base material 6 larger than the light control sheet 7 via the adhesive layer 5. The difference is that after pasting the sheet 7, the barrier portion 31 is formed to a position that covers the side surfaces of the light control sheet 7 and the adhesive layer 5.

First, the light control sheet 7 is formed in the same manner as in the first embodiment. Next, an adhesive layer 5 is formed on the lower surface of the light control sheet 7 by coating, and the light control sheet 7 is attached to the support base material 6 via the adhesive layer 5.

Next, the barrier portion 31 is formed by applying glass paint to the upper surface of the light control sheet 7 attached to the support base material 6 and the side surfaces of the light control sheet 7 and the adhesive layer 5 and curing it. . For example, the top surface of the light control sheet 7 may be coated with glass paint by screen printing or the like, and the side surface may be coated with glass paint using a dispenser.

Note that the light control device 30 of the third embodiment can be applied to a light control window similarly to the light control device 10 of the first embodiment. Further, the light control device 30 of the third embodiment may include a primer layer 8 between the upper surface of the light control sheet 7 and the barrier portion 31, similarly to the second embodiment.

[Effect]
According to the light control device 30 of the third embodiment, the following effects can be obtained in addition to the effects of the light control device 10 of the first embodiment. That is, since the side surfaces of the light control sheet 7 are covered with the barrier portions 31, it is possible to suppress moisture and the like from penetrating into the interior from the side surfaces of the light control sheet 7. Therefore, the ability of the light control device 30 to block moisture and the like is further improved.

In addition, when the support base material 6 is plate glass, since the difference in refractive index between the support base material 6 and the barrier part 31 is small, the part of the barrier part 31 that is in contact with the support base material 6 and the support base material 6 Reflection at the interface with is suppressed. Therefore, deterioration in design at the ends of the light control device 30 can be suppressed.

(Fourth embodiment)
A fourth embodiment of a light control device, a light control window, and a method for manufacturing a light control device will be described with reference to FIGS. 4 to 11. In the following, differences between the fourth embodiment and the first embodiment will be mainly described, and configurations similar to those in the first embodiment will be given the same reference numerals and explanations thereof will be omitted.

In the light control device 40 of the fourth embodiment, the structure near the terminal portions 9A and 9B is different from that of the first embodiment. The terminal parts 9A and 9B are parts for electrically connecting the transparent electrode layers 3A and 3B to a power source for driving the light control sheet 7, and are arranged at the ends of the light control sheet 7.

First, the structure near the second terminal portion 9B connected to the second transparent electrode layer 3B will be described.
As shown in FIG. 4, the light control sheet 7 has the surface of the second transparent electrode layer 3B separated from the light control layer 4, the first transparent electrode layer 3A, and the first transparent resin layer 2A at the end thereof. The first electrode sheet has a region exposed from the first electrode sheet. In this region, the second terminal portion 9B is fixed to the surface of the second transparent electrode layer 3B. In other words, in the region to which the second terminal portion 9B is connected, the second electrode sheet consisting of the second transparent resin layer 2B and the second transparent electrode layer 3B extends from other parts and is attached to the support base material 6. It is attached.

A wiring 11B electrically connected to a power source through a circuit that generates a driving voltage is connected to the second terminal portion 9B. The second terminal portion 9B only needs to have a configuration that can be connected to the second transparent electrode layer 3B and the wiring 11B. For example, the second terminal portion 9B may be made of conductive adhesive tape or solder.

When viewed from a position facing the upper surface of the light control sheet 7, the support base material 6 is larger than the light control sheet 7, and the light control sheet 7 is located inside the support base material 6. The barrier portion 41, which is a cured product of glass paint, is exposed from the light control layer 4 at the top surface of the light control sheet 7, the side surfaces of the light control sheet 7 and the adhesive layer 5, and the second terminal portion 9B and its surroundings. It covers the surface of the second transparent electrode layer 3B and a part of the upper surface of the support base material 6.

Next, three forms will be described as structures near the first terminal portion 9A connected to the first transparent electrode layer 3A.
As shown in FIG. 5, in the light control sheet 7, the surface of the first transparent electrode layer 3A is separated from the light control layer 4, the second transparent electrode layer 3B, and the second transparent resin layer 2B at the end thereof. The second electrode sheet has a region exposed from the second electrode sheet. In this region, the first terminal portion 9A is fixed to the surface of the first transparent electrode layer 3A. In other words, in the region to which the first terminal portion 9A is connected, the first electrode sheet consisting of the first transparent resin layer 2A and the first transparent electrode layer 3A extends from other parts and faces the support base material 6. are doing.

A wiring 11A electrically connected to a power source through a circuit that generates a driving voltage is connected to the first terminal portion 9A. The first terminal portion 9A is made of the same material as the second terminal portion 9B. In addition, in the light control sheet 7, the arrangement of the area to which the first terminal part 9A is connected and the area to which the second terminal part 9B is connected may be set as appropriate depending on the positional relationship with the power source, etc. Bye.

In the first form of the structure near the first terminal section 9A, the barrier section 41 that extends continuously from the vicinity of the second terminal section 9B is composed of a covering section 42 and an embedded section 43. The embedded portion 43 fills the space between the first terminal portion 9A and the surface of the first transparent electrode layer 3A exposed from the light control layer 4 around the first terminal portion 9A, and the support base material 6. The covering portion 42 covers the upper surface of the light control sheet 7 and the side surfaces of the light control sheet 7 and the adhesive layer 5, and also extends outside the first terminal portion 9A and the embedded portion 43 on the support base material 6. . In other words, the barrier section 41 covers the upper surface of the light control sheet 7 and is located outside the light control sheet 7 on the support base material 6 when viewed from a position facing the upper surface. The covering portion 42 and the embedded portion 43 are integral structures that are continuous with each other.

A method of manufacturing the light control device 40 having the structure near the second terminal portion 9B shown in FIG. 4 and the structure of the first form near the first terminal portion 9A shown in FIG. 5 will be described.
The area where the first terminal portion 9A in the light control sheet 7 is arranged is a layered structure of the light control layer 4, the transparent electrode layers 3A, 3B, and the transparent resin layers 2A, 2B. It is formed by removing the electrode layer 3B and the second transparent resin layer 2B. Similarly, in the area where the second terminal portion 9B of the light control sheet 7 is arranged, the light control layer 4, the first transparent electrode layer 3A, and the first transparent resin layer 2A are removed from the laminate. formed by. Note that the first laminate consisting of the first transparent resin layer 2A and the first transparent electrode layer 3A and the second laminate consisting of the second transparent resin layer 2B and the second transparent electrode layer 3B are made to have different shapes. and arranging these laminates so that the first laminate extends in the region where the first terminal portion 9A is arranged and the second laminate extends in the region where the second terminal portion 9B is arranged, A light control layer 4 may be formed in between.

After producing the light control sheet 7, an adhesive layer 5 is formed by coating on the second transparent resin layer 2B of the light control sheet 7, and the light control sheet 7 is attached to the support base material 6 via the adhesive layer 5. . Then, the terminal portions 9A, 9B are arranged on the light control sheet 7, and the wirings 11A, 11B are connected to the terminal portions 9A, 9B. The method of connecting the wirings 11A and 11B is not particularly limited.

For example, if the terminal portions 9A, 9B include solder, the wirings 11A, 11B can be connected to the terminal portions 9A, 9B by soldering. The soldering may be ultrasonic soldering. In addition, when the terminal parts 9A, 9B include conductive adhesive tape, the conductive adhesive tape is also firmly fixed to the ends of the wiring 11A, 11B, and the conductive adhesive tape of the terminal parts 9A, 9B and the wiring 11A, Wirings 11A and 11B can be connected to terminal portions 9A and 9B by adhering conductive adhesive tape fixed to 11B.

Next, glass paint is applied to the light control sheet 7. At this time, glass paint is applied to the upper surface of the light control sheet 7, the surface of the second terminal portion 9B and the second transparent electrode layer 3B exposed around it, and the side surfaces of the light control sheet 7 and the adhesive layer 5. do. Further, the space between the supporting base material 6 and the surface of the first transparent electrode layer 3A exposed at the first terminal portion 9A and its surroundings is also filled with glass paint. That is, the barrier part 41 is formed by supplying glass paint all at once to a portion where the barrier part 41 is to be placed and curing it.

As shown in FIG. 6, the second embodiment of the structure near the first terminal portion 9A differs from the first embodiment in that the covering portion 42 and the embedded portion 43 are separate bodies. The embedded portion 43 is in contact with a portion of the covering portion 42 located outside the embedded portion 43 along the support base 6, and an interface between the embedded portion 43 and the covering portion 42 exists.

When manufacturing the structure of the second form near the first terminal portion 9A, as shown in FIG. An entry portion 43 is formed. The embedded portion 43 is formed by applying a glass paint to the surface of the first terminal portion 9A and the first transparent electrode layer 3A exposed around the first terminal portion 9A and hardening the glass paint. Thereafter, as shown in FIG. 8, the light control sheet 7 is attached to the support base material 6 via the adhesive layer 5. The embedded part 43 is placed on the support base material 6 together with the light control sheet 7, but is not fixed to the support base material 6.

Next, glass paint is applied to the upper surface of the light control sheet 7, the side surfaces of the light control sheet 7 and the adhesive layer 5, the second terminal portion 9B and its surroundings, and also to the outside of the embedded portion 43, and is cured. Thereby, the covering portion 42 is formed.

As shown in FIG. 9, in the third form of the structure near the first terminal part 9A, the surface of the first transparent electrode layer 3A exposed from the light control layer 4 in and around the first terminal part 9A, and the support The space between the base material 6 and the adhesive portion 44 is filled. The adhesive portion 44 is made of, for example, an adhesive such as acrylic resin.

The barrier part 41 does not have the embedded part 43 and covers the upper surface of the light control sheet 7 and the side surfaces of the light control sheet 7 and the adhesive layer 5, and also covers the first terminal part 9A and the adhesive layer on the support base material 6. 44. The adhesive portion 44 is in contact with a portion of the barrier portion 41 located outside the adhesive portion 44 along the support base material 6.

When manufacturing the third form of the structure near the first terminal portion 9A, as shown in FIG. A portion 44 is formed. The adhesive portion 44 is formed by applying an adhesive to the surface of the first terminal portion 9A and the first transparent electrode layer 3A exposed around the first terminal portion 9A. In addition, the adhesive layer 5 and the adhesive part 44 may be formed all at once, and in this case, the adhesive layer 5 and the adhesive part 44 become a continuous integral structure.

Thereafter, as shown in FIG. 11, the light control sheet 7 is attached to the support base material 6 via the adhesive layer 5 and the adhesive portion 44. The adhesive portion 44 is adhered to the support base material 6. Next, glass paint is applied to the upper surface of the light control sheet 7, the side surfaces of the light control sheet 7 and the adhesive layer 5, the second terminal portion 9B and its surroundings, and also to the outside of the adhesive portion 44, and is cured. As a result, the barrier portion 41 is formed.

Note that the light control device 40 of the fourth embodiment can be applied to a light control window similarly to the light control device 10 of the first embodiment. Further, the light control device 40 of the fourth embodiment may include a primer layer 8 between the upper surface of the light control sheet 7 and the barrier portion 41, similarly to the second embodiment.

[Effect]
According to the light control device 40 of the fourth embodiment, in addition to the effects of the light control device 10 of the first embodiment, the following effects can be obtained. First, since the second terminal portion 9B and its surroundings are covered by the barrier portion 41, the vicinity of the second terminal portion 9B can be protected. Furthermore, it is also possible to suppress moisture and the like from penetrating into the light control sheet 7 from the vicinity of the second terminal portion 9B.

Regarding the structure near the first terminal portion 9A, the first terminal portion 9A and its surroundings are covered by the barrier portion 41 or the barrier portion 41 and the adhesive portion 44, so that the vicinity of the first terminal portion 9A is protected. can do. Furthermore, it is also possible to prevent moisture and the like from entering the interior of the light control sheet 7 from the vicinity of the first terminal portion 9A.

In the first form, the covering part 42 and the embedded part 43 are integrally formed in the barrier part 41. That is, these parts are formed together in one process. Therefore, an increase in the number of steps in the manufacturing process of the light control device 40 can be suppressed.

Furthermore, in the second embodiment, there is an interface between the covering portion 42 and the embedded portion 43, that is, they are formed separately. Specifically, the embedded part 43 can be formed before the light control sheet 7 is attached to the support base material 6, and the covering part 42 can be formed after the light control sheet 7 is attached to the support base material 6. . Therefore, manufacturing of the embedded part 43 is easier than in the case where the embedded part 43 is formed by pasting the light control sheet 7 on the support base material 6 and then filling the gap between the light control sheet 7 and the support base material 6. It is.

Further, in the third embodiment, the adhesive portion 44 is located between the first terminal portion 9A and its surroundings and the support base material 6. According to such a configuration, the first terminal portion 9A and its surroundings are attached to the support base material 6 via the adhesive portion 44, so that the light control sheet 7 is firmly fixed to the support base material 6.

[Modified example]
In each of the above embodiments, the light control sheet 7 is attached to the flat surface of the flat supporting base material 6, and the upper surface of the light control sheet 7 is flat. The upper surface may be a curved surface or a surface having unevenness. That is, the light control sheet 7 may be attached to a surface different from a plane.

As in the past, when the light control sheet 7 is sandwiched between laminated glasses, if you try to form a light control device in a shape along a curved or uneven surface, the difference between one plate glass and the other plate glass due to the difference in curvature, etc. The load required for designing the dimensional difference with the plate glass and precisely forming the plate glass is large. Furthermore, if pressure is applied by sandwiching the light control sheet 7 between glass plates having a complicated shape, local stress will be generated in a stronger and more complex manner, making it more likely that a short circuit will occur between the transparent electrode layers 3A and 3B. Therefore, it is difficult to form a light control device in a shape different from a flat plate shape, and there is a limit to the improvement in design of the light control device.

On the other hand, as in each of the above embodiments, a light control device that is manufactured by pasting the light control sheet 7 on the support base material 6 and forming a barrier portion by curing the glass paint can be manufactured. There is a high degree of freedom regarding the shape of the light control device. Therefore, it is also possible to manufacture a light control device with a high design quality. Specifically, since the light control sheet 7 has flexibility, it is easy to attach the light control sheet 7 along the curved surface or uneven surface of the support base material 6. Since the barrier portion is formed by supplying and curing liquid glass paint, the barrier portion can be easily formed along the upper surface of the light control sheet 7. In addition, since no heating is required in the process of bonding the light control sheet 7 and the support base material 6 together or in the process of forming the barrier part, each component does not shrink due to heat, and the components do not peel off or change their position due to such shrinkage. Misalignment can also be avoided.

Hereinafter, with reference to FIGS. 12 to 20, nine embodiments of a first modification to a ninth modification will be described as a light control device including a light control sheet having an upper surface other than a flat surface. The material of the support base material in each modification is not particularly limited, and may be made of glass or resin, like the support base material 6 of each of the above embodiments. Moreover, the light control sheet of each modification has the same layer structure as the light control sheet 7 of each of the above embodiments.

Note that in order to facilitate understanding, the adhesive layer is not shown in FIGS. 12 to 20, and the light control sheet is shown as one layer. Further, in FIGS. 12 to 20, each modification is shown as a form in which the upper surface of the light control sheet is a surface other than a flat surface in the first embodiment, but in the second embodiment, the third embodiment, and The configuration of each modification is also applicable to each embodiment of the fourth embodiment.

In the first modification shown in FIG. 12, the attachment surface 6Sa, which is the surface of the support base material 6a to which the light control sheet 7a is stuck, is a curved surface that is convex with respect to the light control sheet 7a. That is, the attachment surface 6Sa is curved so as to protrude toward the light control sheet 7a. The attachment surface 6Sa may be a developable surface or a three-dimensional curved surface. The light control sheet 7a has a shape that follows the attachment surface 6Sa, and the upper surface of the light control sheet 7a is a curved surface that follows the attachment surface 6Sa. The barrier portion 1a has a plate-like shape with a substantially uniform thickness along the upper surface of the light control sheet 7a.

In the second modification shown in FIG. 13, the barrier portion 1b covering the support base material 6a and the light control sheet 7a has a shape different from a plate shape, and its thickness is not constant. In the example shown in FIG. 13, the surface of the barrier section 1b that is in contact with the light control sheet 7a is a curved surface along the upper surface of the light control sheet 7a, and the surface and side surfaces of the barrier section 1b opposite to the light control sheet 7a are flat. It is. The barrier portion 1b has an overall shape of a rectangular parallelepiped with a part depressed, and the support base material 6a and the light control sheet 7a are located in this depression.

In the third modification shown in FIG. 14, the attachment surface 6Sc of the support base material 6c to which the light control sheet 7c is attached is a curved surface that is concave with respect to the light control sheet 7a. That is, the attachment surface 6Sc is curved so as to protrude toward the opposite side from the light control sheet 7a. The attachment surface 6Sc may be a developable surface or a three-dimensional curved surface. The light control sheet 7c has a shape that follows the attachment surface 6Sc, and the upper surface of the light control sheet 7c is a curved surface that follows the attachment surface 6Sc. The barrier portion 1c has a plate-like shape with a substantially uniform thickness along the upper surface of the light control sheet 7c.

In the fourth modification shown in FIG. 15, the barrier portion 1d covering the supporting base material 6c and the light control sheet 7c has a shape different from a plate shape, and its thickness is not constant. In the example shown in FIG. 15, the surface of the barrier section 1d in contact with the light control sheet 7c is a curved surface along the upper surface of the light control sheet 7c, and the surface of the barrier section 1d opposite to the light control sheet 7c is a flat surface. . The barrier portion 1d fills the depression formed by the support base material 6c and the light control sheet 7c.

In the fifth modification shown in FIG. 16, the attachment surface 6Se of the support base material 6e to which the light control sheet 7e is attached is a surface having unevenness. Although FIG. 16 shows an example in which the unevenness of the attachment surface 6Se is formed from a plurality of convex portions each having an isosceles triangular cross section, the shape and arrangement of the convex portions are not particularly limited. For example, the attachment surface 6Se may have irregularities like the surface of a Fresnel lens. Further, the unevenness of the attachment surface 6Se may be formed from a plurality of recesses, or may be formed from a mixture of projections and recesses.

The light control sheet 7e has a shape along the attachment surface 6Se, and the upper surface of the light control sheet 7e is a surface having irregularities that follow the attachment surface 6Se. The surface of the barrier portion 1e that is in contact with the light control sheet 7e has irregularities along the upper surface of the light control sheet 7a. The barrier portion 1e fills in the irregularities on the upper surface of the light control sheet 7e. Note that the barrier portion 1e may have a plate-like shape with a substantially uniform thickness along the upper surface of the light control sheet 7c.

In the sixth modification shown in FIG. 17, the support base material 6f has a cylindrical shape, and the light control sheet 7f is pasted on the pasting surface 6Sf, which is the inner surface thereof. In FIG. 17, a cylindrical support base material 6f is illustrated. The light control sheet 7f has a cylindrical shape that follows the attachment surface 6Sf, and the upper surface of the light control sheet 7f has a cylindrical shape that follows the attachment surface 6Sf. The barrier part 1f covers the upper surface of the light control sheet 7f inside the support base 6f, and has a plate-like cylindrical shape with a substantially uniform thickness.

In the seventh modification shown in FIG. 18, a barrier portion 1g that covers the upper surface of the light control sheet 7f inside the support base 6f fills the space inside the light control sheet 7f. In the example shown in FIG. 18, the barrier portion 1g has a cylindrical shape that fills the inside of the light control sheet 7f.

In the eighth modification shown in FIG. 19, the support base material 6h has a cylindrical shape, and the light control sheet 7h is pasted on the pasting surface 6Sh that is the outer surface thereof. In FIG. 19, a cylindrical support base material 6h is illustrated. The light control sheet 7h has a cylindrical shape that follows the attachment surface 6Sh, and the upper surface of the light control sheet 7h has a cylindrical shape that follows the attachment surface 6Sh. The barrier part 1h covers the upper surface of the light control sheet 7h on the outside of the support base 6h, and has a plate-like cylindrical shape with a substantially uniform thickness.

In the ninth modification shown in FIG. 20, the barrier portion 1i that covers the upper surface of the light control sheet 7h outside the support base 6h has a shape different from a plate shape, and its thickness is not constant. In the example shown in FIG. 18, the barrier part 1i has a cylindrical shape surrounding the light control sheet 7h, its inner surface has a cylindrical shape along the upper surface of the light control sheet 7h, and its outer surface is a flat surface. It has a rectangular cylindrical shape consisting of.

In each of the above-mentioned modifications, when forming a plate-shaped barrier portion having a substantially constant thickness, glass paint may be supplied toward the light control sheet using various coating methods. When the upper surface of the light control sheet is cylindrical, for example, the glass paint can be applied uniformly by supplying the glass paint while rotating the light control sheet. Furthermore, when applying glass paint to the outer surface of a cylindrical light control sheet, the film thickness of the barrier portion can be controlled by dipping and scraping with a doctor, as in the case of gravure printing.

In addition, when forming a barrier part that does not have a constant thickness, it is possible to use various coating methods or filling methods, or to place a mold according to the outer shape of the barrier part in a position facing the top surface of the light control sheet. The barrier portion can be formed by filling a glass paint between the mold and the top surface. For example, as in the seventh modification, the barrier portion 1g filling the inside of the cylindrical light control sheet 7f closes the lower end of the support base material 6f and the cylindrical end of the light control sheet 7f, and the light control sheet 7f is inserted from the upper end. It can be formed by pouring glass paint inside. In addition, as in the ninth modification, the barrier part 1i located outside the cylindrical light control sheet 7h is formed using a frame-shaped mold having an internal space shaped according to the outer shape of the barrier part 1i to be formed. It can be formed by placing it outside the supporting base material 6h and the light control sheet 7h, and pouring glass paint between the mold and the light control sheet 7h.

In addition, the shape of the upper surface of the light control sheet and the shape of the surface other than the surface in contact with the light control sheet in the barrier portion may be arbitrarily designed, without being limited to the shapes exemplified as the above-mentioned modifications. In short, the light control device may be manufactured by a method of supplying the glass paint toward the upper surface of the light control sheet to form a barrier portion that is a cured product of the glass paint.

[Other variations]
- The light control sheet may include a pair of alignment layers sandwiching the light control layer 4 between the light control layer 4 and the transparent electrode layers 3A and 3B. The alignment layer is, for example, a vertical alignment film, and aligns the liquid crystal molecules so that their long axes are along the normal direction of the alignment layer when no driving voltage is applied. On the other hand, the alignment layer changes the long axis direction of the liquid crystal molecules to a direction other than the normal direction, depending on the magnitude of the driving voltage. Examples of the material constituting the alignment layer include polyamide, polyimide, polycarbonate, polystyrene, polysiloxane, polyester such as polyethylene terephthalate and polyethylene naphthalate, and polyacrylate such as polymethyl methacrylate. The alignment treatment for forming the alignment layer is, for example, rubbing treatment, polarized light irradiation treatment, and microfabrication treatment.

In the configuration including the alignment layer, the light control layer 4 becomes transparent when no driving voltage is applied to the transparent electrode layers 3A, 3B, and the light control layer 4 becomes transparent when the driving voltage is applied to the transparent electrode layers 3A, 3B. 4 becomes opaque.

- The light control device may be colored. For example, in addition to the structure in which the light control layer 4 contains a dye as described above, a structure in which a color film is used as the transparent resin layers 2A and 2B, a structure in which a color film is sandwiched between the light control sheet and the barrier part, and a structure in which a color film is sandwiched between the light control sheet and the barrier part, and an adhesive A colored light control device can also be realized by a structure in which the layer 5 contains a dye.

- In each of the above embodiments and modifications, the lower surface of the light control sheet is attached to the support base material, but instead, the lower surface of the light control sheet may also be covered with a cured product of glass paint. . Such a configuration is formed by supplying glass paint toward each of the upper and lower surfaces of the light control sheet. If at least the top surface of the light control sheet is covered with a barrier part made of cured glass paint, it is possible to protect the top surface of the light control sheet, and the light control sheet can be sandwiched between two plate-like members and bonded together. It is possible to manufacture a light control device without the need for

1, 1a, 1b, 1c, 1d, 1e, 1f, 1i, 31, 41... Barrier part, 2A, 2B... Transparent resin layer, 3A, 3B... Transparent electrode layer, 4... Light control layer, 5... Adhesive layer, 6, 6a, 6c, 6e, 6f, 6h... Support base material, 7, 7a, 7c, 7e, 7f, 7h... Light control sheet, 8... Primer layer, 9A, 9B... Terminal portion, 10, 20, 30, 40... Light control device, 11A, 11B... Wiring, 42... Covering part, 43... Embedded part, 44... Adhesive part.

Claims (13)

a light control sheet comprising a light control layer and a pair of electrode sheets sandwiching the light control layer;
a barrier portion having a portion covering the upper surface of the light control sheet;
A light control device comprising: a support base material to which a lower surface of the light control sheet is attached;
The barrier part is a cured product of glass paint supplied toward the light control sheet,
The surface of the supporting base material to which the lower surface of the light control sheet is attached is a curved surface,
A surface of the barrier portion opposite to the upper surface side of the light control sheet is a flat surface.
Dimmer. a light control sheet comprising a light control layer and a pair of electrode sheets sandwiching the light control layer;
a barrier portion having a portion covering the upper surface of the light control sheet;
A light control device comprising: a support base material to which a lower surface of the light control sheet is attached;
The barrier part is a cured product of glass paint supplied toward the light control sheet,
The surface of the supporting base material to which the lower surface of the light control sheet is attached is a curved surface,
The barrier section fills a space defined by the upper surface of the light control sheet.
Dimmer. The electrode sheet includes a transparent resin layer and a transparent electrode layer located between the transparent resin layer and the light control layer,
The light control device according to claim 1 or 2, wherein the light control device includes a primer layer between the transparent resin layer forming the upper surface of the light control sheet and the barrier section. The light control device according to any one of claims 1 to 3, wherein the barrier portion has a portion on the support base material that covers a side surface of the light control sheet. Of the first electrode sheet and the second electrode sheet that are the pair of electrode sheets, the electrode sheet located on the same side as the support base material with respect to the light control layer is the second electrode sheet,
The light control sheet has a second region in which the transparent electrode layer of the second electrode sheet is exposed from the light control layer and the first electrode sheet,
The light control device includes a second terminal portion for connecting the transparent electrode layer of the second electrode sheet and a power source, the second terminal portion being fixed to the transparent electrode layer in the second region,
The light control device according to any one of claims 1 to 4 , wherein the barrier portion has a portion that covers the second terminal portion and the transparent electrode layer exposed around the second terminal portion. Of the first electrode sheet and the second electrode sheet that are the pair of electrode sheets, the electrode sheet located on the opposite side of the support base material with respect to the light control layer is the first electrode sheet,
The light control sheet has a first region in which a transparent electrode layer of the first electrode sheet is exposed from the light control layer and the second electrode sheet,
The light control device includes a first terminal portion for connecting the transparent electrode layer of the first electrode sheet and a power source, the first terminal portion being fixed to the transparent electrode layer in the first region,
The light control device according to any one of claims 1 to 5 , wherein the barrier section has an embedded section that fills a space between the first region, the first terminal section, and the support base material. The barrier portion has a portion located outside the light control sheet on the support base material when viewed from a position facing the upper surface of the light control sheet,
The light control device according to claim 6 , wherein the embedded portion and the outer portion are in contact with each other with an interface. Of the first electrode sheet and the second electrode sheet that are the pair of electrode sheets, the electrode sheet located on the opposite side of the support base material with respect to the light control layer is the first electrode sheet,
The light control sheet has a first region in which a transparent electrode layer of the first electrode sheet is exposed from the light control layer and the second electrode sheet,
The light control device includes:
a first terminal portion for connecting the transparent electrode layer of the first electrode sheet and a power source, the first terminal portion being fixed to the transparent electrode layer in the first region;
The light control device according to any one of claims 1 to 5 , further comprising an adhesive section located between the first region and the first terminal section and the support base material. The light control device according to any one of claims 1 to 8 , wherein the upper surface of the light control sheet is a curved surface . The light control device according to any one of claims 1 to 9 , wherein the thickness of the barrier portion is greater than the thickness of the light control sheet. A light control window comprising the light control device according to any one of claims 1 to 10 . A method for manufacturing a light control device, comprising supplying a glass paint toward a light control sheet including a light control layer and a pair of electrode sheets sandwiching the light control layer, and curing the glass paint, the method comprising:
The light control device includes:
The light control sheet;
a barrier portion having a portion covering the upper surface of the light control sheet, the barrier portion being formed by curing the glass paint;
A support base material to which a lower surface of the light control sheet is attached, the support base material having a curved surface to which the lower surface is attached ,
A surface of the barrier portion opposite to the upper surface side of the light control sheet is a flat surface.
A method of manufacturing a light control device. A method for manufacturing a light control device, comprising supplying a glass paint toward a light control sheet including a light control layer and a pair of electrode sheets sandwiching the light control layer, and curing the glass paint, the method comprising:
The light control device includes:
The light control sheet;
a barrier portion having a portion covering the upper surface of the light control sheet, the barrier portion being formed by curing the glass paint;
A support base material to which a lower surface of the light control sheet is attached, the support base material having a curved surface to which the lower surface is attached ,
The barrier section fills a space defined by the upper surface of the light control sheet.
A method of manufacturing a light control device.