JP2020138905A - Laminate glass, manufacturing method of laminate glass, dimmer, dimming cell and laminate for dimmer - Google Patents

Abstract

To provide laminate glass capable of suppressing uneven distribution of liquid crystal and a manufacturing method of the laminate glass.SOLUTION: Laminate glass includes: a first glass sheet 10; a second glass sheet 20 arranged opposite to the first glass sheet; a dimming film 40 arranged between the first glass sheet and the second glass sheet; a buffer 50 laminated on a surface of a second glass sheet side of the dimming film; a first intermediate film 30a arranged between the first glass sheet and the dimming film; and a second intermediate film 30b arranged between the second glass sheet and the buffer, in which between the buffer and the dimming film, a space part is formed, pressure applied on a surface of the glass can be homogenized, for example, in plane, a liquid crystal sandwiched between the intermediate films is uniformly dispersed, and a liquid crystal pool that is a phenomenon where a liquid crystal is present much locally can be suppressed from occurring.SELECTED DRAWING: Figure 1

Description

The embodiments of the present disclosure relate to laminated glass, a method for producing laminated glass, a dimmer, a dimming cell, and a laminate for a dimmer.

Conventionally, a dimming member that is used in combination with a translucent member such as a window and can be used for an electronic blind that controls the amount of transmitted external light, a dimming device using such a dimming member, and the like have been proposed. There is. As one of these light control members, a light control film provided with a liquid crystal layer is known (see, for example, Patent Documents 1 and 2). This liquid crystal film is produced by sandwiching a liquid crystal material with a transparent resin base material including a transparent electrode, and further sandwiching the liquid crystal material with a linear polarizing plate. Then, the liquid crystal film can change the orientation of the liquid crystal by changing the electric field applied between the transparent electrodes, and can control the amount of transmitted external light.

Patent No. 6135816 JP-A-2017-187810

As a method for producing a laminated glass in which a light control film is sandwiched, for example, it is conceivable to apply a method similar to that of a conventional laminated glass having an interlayer film sandwiched therein. Specifically, it is a method of heating and pressurizing a laminate in which a light control film is covered with an interlayer film by sandwiching it between a pair of glass plates.

However, it is difficult to ideally make the pressure applied to the surface of the laminated glass uniform, and there is a problem that each member constituting the laminated glass is not uniformly pressure-bonded due to the non-uniform pressure. When the pressure applied to the laminated glass becomes non-uniform, the liquid crystal moves in the light control film and the liquid crystal is locally unevenly distributed. If the liquid crystal is unevenly distributed in the light control film, not only the appearance is poor, but also the light control performance is deteriorated. Therefore, it has been desired to suppress the uneven distribution of liquid crystals in the laminated glass sandwiching the light control film.

The present embodiment provides a laminated glass capable of suppressing uneven distribution of liquid crystals and a method for producing the laminated glass.

When the liquid crystal film is used as a dimming member that can be used for roof windows, side windows, etc. of automobiles, it is preferable to sandwich the liquid crystal film between a pair of glasses via an interlayer film to form a laminated glass. .. However, in laminated glass with a liquid crystal film sandwiched between them, if the pressure applied to the surface of each member when they are integrally crimped is not uniform, or if the shapes of the glass or interlayer film used do not match vertically, the interlayer film or liquid crystal Due to the uneven distribution of liquid crystals, such as when the film is wrinkled, liquid crystal pools, which are a phenomenon in which a large amount of liquid crystals are locally present, are likely to occur, and the quality and appearance of laminated glass having a dimming function deteriorates. There's a problem.

The present embodiment is for a dimming device, a dimming cell, and a dimming device capable of uniformly dispersing liquid crystals in a plane and suppressing the occurrence of liquid crystal pools, which is a phenomenon in which a large amount of liquid crystals are locally present. Provide a laminate.

The laminated glass according to the embodiment of the present disclosure is formed between the first glass plate, the second glass plate arranged to face the first glass plate, and the first glass plate and the second glass plate. A light control film provided, a buffer laminated on the surface of the light control film on the second glass plate side, and a first interlayer film provided between the first glass plate and the light control film. A second interlayer film provided between the second glass plate and the buffer is provided, and a space is formed between the buffer and the light control film.

In the laminated glass according to the embodiment of the present disclosure, a plurality of spacers may be provided between the buffer and the light control film.

In the laminated glass according to the embodiment of the present disclosure, the buffer may be a functional film having at least one function of ultraviolet absorption, heat insulation, sound insulation, antireflection, and super birefringence.

In the laminated glass according to the embodiment of the present disclosure, the buffer may be a film having a function of a transparent screen.

In the laminated glass according to the embodiment of the present disclosure, the buffer may be a light control film.

In the laminated glass according to one embodiment of the present disclosure, the melting point of the buffer may be higher than the softening points of the first intermediate film and the second intermediate film.

In the laminated glass according to the embodiment of the present disclosure, the light control film sandwiches the liquid crystal layer between a pair of laminated bodies, and the liquid crystal molecules in the liquid crystal layer are driven by driving an electrode provided on at least one of the laminated bodies. The amount of transmitted light transmitted through the light control film may be adjustable by controlling the orientation of the light.

The method for producing laminated glass according to one embodiment of the present disclosure includes a step of laminating a first interlayer film on a first glass plate, a step of laminating a light control film on the first interlayer film, and the adjustment. A step of laminating a first buffer on the surface of an optical film so as to be relatively movable, a step of laminating a second interlayer film on the first buffer, and a second glass on the second interlayer film. The step of laminating the plates and the laminating body composed of the first glass plate, the first interlayer film, the dimming film, the first buffer, the second intermediate film and the second glass plate are heated and applied. It includes a pressing process.

In the method for producing a laminated glass according to an embodiment of the present disclosure, in the step of laminating a light control film on the first interlayer film, a second buffer is provided between the first intermediate film and the light control film. , The step of arranging the light control film so as to be relatively movable with respect to the light control film may be included.

According to the embodiment of the present disclosure, it is possible to provide a laminated glass capable of suppressing uneven distribution of liquid crystals and a method for producing the laminated glass.

The dimming device according to the embodiment of the present disclosure includes a first glass plate, a second glass plate, a dimming cell arranged between the first glass plate and the second glass plate, and the first glass plate. The dimming cell includes a first interlayer film arranged between the glass plate and the dimming cell and a second interlayer film arranged between the second glass plate and the dimming cell. A film is arranged between the first interlayer film and the first interlayer film, and a void layer or a fluid resin layer is provided between the dimming cell and the film.

In the dimming device according to the embodiment of the present disclosure, a spacer may be arranged in the void layer between the dimming cell and the film.

In the dimming apparatus according to the embodiment of the present disclosure, an additional film is arranged between the dimming cell and the second interlayer film, and a void layer is provided between the dimming cell and the additional film. Alternatively, a fluid resin layer may be provided.

In the dimming device according to the present embodiment, a communication hole for communicating between the dimming cell and the film and the outside air may be provided.

In the dimming device according to the embodiment of the present disclosure, an extension portion is formed by a part of the dimming cell and a part of the film, and the extension portion is formed by the first glass plate and the second glass plate in a plan view. The communication hole extending outward of the glass plate may be formed in the extension portion.

In the dimming device according to the embodiment of the present disclosure, the communication hole may be sealed.

In the dimming device according to the present embodiment, the peripheral edge of the dimming cell and the peripheral edge of the film may be adhered to each other by a sealing material.

The dimming cell according to the embodiment of the present disclosure is between the first base material, the first transparent electrode, the second transparent electrode, the second base material, and the first transparent electrode and the second transparent electrode. The first base material has a protruding piece that projects outward.

The laminate for a light control device according to an embodiment of the present disclosure includes a first base material, a first transparent electrode, a second transparent electrode, a second base material, the first transparent electrode, and the second transparent electrode. A dimming cell having a liquid crystal layer arranged between the dimming cell and a film adhered to the dimming cell by a sealing material are provided, and a void layer or a flow is provided between the dimming cell and the film. A sex resin layer is provided.

According to one embodiment of the present disclosure, it is possible to uniformly disperse the liquid crystal in the plane and suppress the occurrence of liquid crystal pools, which is a phenomenon in which a large amount of liquid crystal is locally present.

It is a figure which shows the structure of the laminated glass in 1st Embodiment. It is sectional drawing which shows the layer structure of a light control film. It is a figure which shows the manufacturing process of the laminated glass in 1st Embodiment. It is a figure which shows the manufacturing process of the laminated glass in 1st Embodiment. It is an enlarged view which shows a part of the laminated glass in 2nd Embodiment. It is a figure which shows an example of the structure of a buffer body in a modified form. It is a perspective view which shows the dimming apparatus by 3rd Embodiment. It is sectional drawing which shows the dimming apparatus by 3rd Embodiment. It is an exploded perspective view which shows the dimming apparatus by 3rd Embodiment. It is sectional drawing which shows the manufacturing method of the light control cell by 3rd Embodiment. It is sectional drawing which shows the manufacturing method of the light control cell by 3rd Embodiment. It is sectional drawing which shows the manufacturing method of the dimming apparatus by 3rd Embodiment. It is sectional drawing which shows the action when the liquid crystal stagnation of a light control cell is eliminated after manufacturing of the light control device by 3rd Embodiment. It is sectional drawing which shows the dimming apparatus by the 1st modification of 3rd Embodiment. It is sectional drawing which shows the dimming apparatus by the 2nd modification of 3rd Embodiment. It is sectional drawing which shows the dimming apparatus by the 3rd modification of 3rd Embodiment. It is sectional drawing which shows the dimming apparatus by the 4th modification of 3rd Embodiment. It is an exploded perspective view which shows the dimming apparatus by the 4th modification of 3rd Embodiment. It is an exploded perspective view which shows the dimming apparatus by the 5th modification of 3rd Embodiment. It is sectional drawing which shows the dimming apparatus by the 6th modification of 3rd Embodiment. It is an exploded perspective view which shows the dimming apparatus by the 6th modification of 3rd Embodiment. It is an exploded perspective view which shows the dimming apparatus by 7th modification of 3rd Embodiment. It is an exploded perspective view which shows the dimming apparatus by the 8th modification of 3rd Embodiment. It is an exploded perspective view which shows the dimming apparatus by the 9th modification of 3rd Embodiment. It is an exploded perspective view which shows the dimming apparatus by the 10th modification of 3rd Embodiment. It is an exploded perspective view which shows the dimming apparatus by 11th modification of 3rd Embodiment. It is an exploded perspective view which shows the dimming apparatus by the 12th modification of 3rd Embodiment.

Hereinafter, the laminated glass and the method for producing the laminated glass according to the embodiment of the present disclosure will be described with reference to the drawings. In addition, each figure shown below including FIG. 1 schematically shows the structure of the laminated glass which concerns on embodiment of this disclosure. Therefore, the size, shape, etc. of each part are exaggerated as appropriate for easy understanding. In addition, each figure shows a coordinate system of XY or YY that are orthogonal to each other (excluding a part of the segmentation diagram). In this coordinate system, one side of the laminated glass 1 when viewed in the arrangement of FIG. 1A is the X direction, and the other direction orthogonal to the X direction is the Y direction. Further, in the laminated glass 1, the thickness direction (normal direction) orthogonal to the XY plane is defined as the Z direction. The numerical values, shapes, materials, and the like described in the present specification are examples of embodiments, and are not limited thereto, and may be appropriately selected and used.

(First Embodiment)
FIG. 1 is a diagram showing a configuration of a laminated glass 1 in the first embodiment. FIG. 1A is a plan view of the laminated glass 1. FIG. 1 (B) is a cross-sectional view showing a cross section of FIG. 1 (A). FIG. 1C is an enlarged view corresponding to the region b of FIG. 1B. In each diagram showing the light control film 40 described later, the electrode terminals extending outward from the transparent electrodes 42A and 42B of the light control film 40 are not shown. As shown in FIGS. 1A and 1B, the laminated glass 1 includes a first glass plate 10, a second glass plate 20, an interlayer film 30, a light control film 40, and a buffer 50.

The first glass plate 10 and the second glass plate 20 are members arranged on the front and back surfaces of the laminated glass 1, respectively. For example, assuming that the first glass plate 10 is arranged on the back surface side of the laminated glass 1, the second glass plate 20 is arranged on the front surface side of the laminated glass 1. As the first glass plate 10 and the second glass plate 20, for example, plate glass having high translucency such as soda-lime glass (blue plate glass), borosilicate glass (white plate glass), quartz glass, soda glass, and potash glass is used. Can be done.

Further, resin glass can be used as the first glass plate 10 and the second glass plate 20. As the resin glass, for example, one made of polycarbonate, acrylic or the like can be used. In particular, polycarbonate is preferable in terms of heat resistance and strength. Further, the glass plate may be surface-treated such as a hard coat according to the required characteristics such as scratch resistance. As the material of the glass plate, resin glass is preferable to inorganic glass in terms of weight reduction. On the other hand, inorganic glass is preferable to resin glass in terms of cost, heat resistance, scratch resistance and the like.

The interlayer film 30 is a layer provided between the first glass plate 10 and the second glass plate 20, and is a member for joining the first glass plate 10 and the second glass plate 20. Examples of the interlayer film 30 include PVB (polyvinyl butyral), EVA (ethylene-vinyl acetate copolymer), COP (cycloolefin polymer) and the like.

In the present embodiment, the interlayer film 30 has a first intermediate film 30a, a second intermediate film 30b, and a third intermediate film 30c. The first interlayer film 30a is an interlayer film provided between the first glass plate 10 and the light control film 40. The second interlayer film 30b is an interlayer film provided between the second glass plate 20 and the buffer 50. The third intermediate film 30c is an intermediate film provided between the first intermediate film 30a and the second intermediate film 30b in a region excluding the light control film 40 and the buffer 50. The third interlayer film 30c has a hollow square shape, that is, a frame shape in a plan view.

The dimming film 40 is a film (for example, a liquid crystal film) capable of controlling the orientation of liquid crystal molecules in the liquid crystal layer by changing (on / off) the voltage applied to the electrodes and adjusting the amount of transmitted light. is there. The light control film 40 of the present embodiment includes a guest host liquid crystal composition using a dichroic dye as a liquid crystal layer.

The laminated glass 1 provided with the dimming film 40 is, for example, a part for dimming such as a window glass of a building, a showcase, an indoor transparent partition, a vehicle window, or the like (a part where external light is incident, for example, a front surface). It is placed on the side, rear, roof, etc. windows). By changing the voltage applied to the light control film 40, the amount of incident light (transmitted light) inside a building, a vehicle, or the like can be adjusted. The configuration of the light control film 40 will be described in detail later.

The buffer 50 is a member for suppressing uneven distribution of liquid crystals in the light control film 40 during the production of the laminated glass 1 described later. In the present embodiment, as shown in FIG. 1C, the buffer 50 is laminated on the surface of the light control film 40 on the second glass plate side (hereinafter, also referred to as “film surface 40a”).

Examples of the buffer 50 include polyester resins such as PET having high light transmittance, acrylic resins, styrene resins, acrylic / styrene resins, polycarbonate resins, alicyclic polyolefin resins and the like. Further, the buffer 50 may be a functional film having one or more functions such as ultraviolet absorption, heat insulation, sound insulation, antireflection, and super birefringence. The thickness of the buffer 50 is not particularly specified, but for example, it is preferably the same thickness as the base materials 41A and 41B of the light control film 40 described later.

The buffer 50 is laminated so as to be relatively movable with the light control film 40 (film surface 40a). Here, the relative movable means a state in which the light control film 40 and the buffer 50 are laminated with an appropriate adhesion force and are not prevented from moving to each other. Specifically, the buffer 50 is laminated with the light control film 40 without interposing another member, an adhesive layer, or the like. As a result, the buffer 50 can be laminated with the light control film 40 with an appropriate adhesion that is relatively movable.

The adhesion between the light control film 40 and the buffer 50 is, for example, less than 90 mN / 25 mm. The adhesion between the light control film 40 and the buffer 50 can be measured by, for example, a peeling test using a Tensilon tester (manufactured by A & D Co., Ltd., TTG-1210).

It is desirable that the melting point of the buffer 50 is higher than the softening point of the interlayer film 30. This is because if the melting point of the buffer 50 is lower than the softening point of the interlayer film 30, the buffer 50 may be liquefied when heated and pressurized in the manufacturing process (described later) of the laminated glass 1. If the melting point of the buffer 50 is higher than the softening point of the interlayer film 30, the buffer 50 can maintain a solid state even when heated and pressurized during the production of the laminated glass 1.

Next, the configuration of the light control film 40 will be described. FIG. 2 is a cross-sectional view showing the layer structure of the light control film 40. As shown in FIG. 2, the light control film 40 is configured by sandwiching a liquid crystal layer 44, a spacer 45, and a sealing material 46 between the first laminated body 47 and the second laminated body 48. The first laminated body 47 is formed by laminating a transparent electrode 42A and an alignment layer 43A on a base material 41A. The second laminated body 48 is formed by laminating a transparent electrode 42B and an alignment layer 43B on a base material 41B. The light control film 40 is formed by changing the voltage applied to the transparent electrodes 42A and 42B provided on the first laminated body 47 and the second laminated body 48, thereby forming the liquid crystal molecules formed by the liquid crystal layer 44 (guest host liquid crystal composition). By controlling the orientation, the amount of transmitted light is adjusted.

The base materials 41A and 41B are transparent resin members, and for example, a flexible film can be used. As the base materials 41A and 41B, it is desirable to use transparent resin films having a small optical anisotropy and a transmittance of 80% or more in the visible wavelength (380 to 800 nm).

Examples of the material of the transparent resin film include an acetyl cellulose resin such as triacetyl cellulose (TAC), a polyester resin such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), polyethylene (PE), and polypropylene (PP). , Polypolymethylpentene, polyolefin resins such as EVA, vinyl resins such as polyvinyl chloride and vinylidene chloride, acrylic resins, polyurethane resins, polysulfone (PEF), polyethersulfone (PES), polycarbonate ( Examples thereof include resins such as PC), polysulfone, polyether (PE), polyether ketone (PEK), (meth) acronitrile, cycloolefin polymer (COP), and cycloolefin copolymer. As the material of the transparent resin film, resins such as polycarbonate, cycloolefin polymer, and polyethylene terephthalate are particularly preferable. The thickness of the transparent resin film used as the base materials 41B and 21A depends on the material, but can be appropriately selected within the range in which the transparent resin film has flexibility.

The transparent electrodes 42A and 42B are transparent conductive films laminated on the base materials 41A and 41B (transparent resin film), respectively. As the transparent conductive film, various transparent electrode materials applied to this kind of transparent resin film can be applied, and examples thereof include a transparent metal thin film having an oxide-based total light transmittance of 50% or more. .. Examples of the transparent electric film include tin oxide-based, indium oxide-based, and zinc oxide-based.

Examples of the tin oxide (SnO ₂ ) system include nesa (tin oxide SnO ₂ ), ATO (Antimony Tin Oxide: antimony-doped tin oxide), and fluorine-doped tin oxide. Examples of the indium oxide (In2O3) system include indium oxide, ITO (Indium Tin Oxide), and IZO (Indium Zinc Oxide). Examples of the zinc oxide (ZnO) system include zinc oxide, AZO (aluminum-doped zinc oxide), and gallium-doped zinc oxide.

The spacer 45 is a member that defines the thickness (cell gap) of the portion of the liquid crystal layer 44 excluding the outer peripheral portion. As the spacer 45, for example, a spherical transparent bead spacer can be used. As the bead spacer used for the spacer 45, a configuration made of an inorganic material such as silica, a configuration made of an organic material, a configuration of a core-shell structure combining these, and the like can be widely applied. Further, the bead spacer may be formed in a cylindrical shape, an elliptical pillar shape, a prism shape, or a rod shape in addition to the spherical shape. Further, although the spacer 45 is manufactured by a transparent member, a colored material may be applied as necessary to adjust the color.

The spacer 45 that defines the thickness of the liquid crystal layer 44 is not limited to the above-mentioned bead spacer, and may be formed into a cylindrical shape by, for example, coating a photoresist on the base material 41A side, exposing and developing the spacer 45. Good. Further, the spacer 45 may be provided on the second laminated body 48, both of the first laminated body 47 and the second laminated body 48, or the first laminated body 47.

The alignment layers 43A and 43B are formed by a photoalignment layer. As the photo-alignment material applicable to the photo-alignment layer, various materials to which the photo-alignment method can be applied can be widely applied. Examples of the photo-alignment material include a photodegradable type, a photodimerization type, and a photoisomerization type.

Examples of the photodimerized material include cinnamates, coumarins, benzylidenephthalimidines, benzylideneacetophenone, diphenylacetylene, stillbazole, uracil, quinolinone, maleinimide, and polymers having a cinnamicylene acetate derivative. Among them, a polymer having one or both of cinnamate and coumarin is preferably used because of its good orientation-regulating power. Specific examples of such photodimerized materials include the compounds described in JP-A-9-118717, JP-A-10-506420, JP-A-2003-505561 and WO2010 / 150748. Can be mentioned.

A rubbing oriented layer may be used instead of the photo oriented layer. The rubbing alignment layer may not be subjected to the rubbing treatment, or may be subjected to the rubbing treatment to form a fine line-shaped uneven shape to prepare the alignment layer. Further, in the present embodiment, the light control film 40 shows a form including the alignment layers 43A and 43B, but the present invention is not limited to this, and the light control film 40 may not include the alignment layers 43A and 43B.

A guest host liquid crystal composition and a dichroic dye composition can be widely applied to the liquid crystal layer 44. The guest host liquid crystal composition may contain a chiral agent so that when the liquid crystal material is horizontally oriented, the liquid crystal layer 44 may be oriented in a spiral shape in the thickness direction. The light control film 40 is provided with a sealing material 46 so as to surround the liquid crystal layer 44. The sealing material 46 integrally holds the first laminated body 47 and the second laminated body 48, and prevents leakage of the liquid crystal material. As the sealing material 46, for example, a thermosetting resin such as an epoxy resin or an acrylic resin, an ultraviolet curable resin, or the like can be used.

The light control film 40 is composed of a vertically oriented layer in which the orientation layers 43A and 43B are set in a certain direction to regulate the orientation related to pretilt so that the orientation of the guest host liquid crystal composition at the time of shading is when an electric field is applied. To. As a result, the light control film 40 is configured as normally clear. It should be noted that this setting at the time of transmissive light may be configured as a normal dryk with an electric field applied. Here, the normal lead is a structure in which the transmittance is minimized when no voltage is applied to the liquid crystal, resulting in a black screen (light-shielding state). Normal clear is a structure in which the transmittance is maximized and becomes transparent (transmissive state) when no voltage is applied to the liquid crystal.

In the present embodiment, an example in which the light control film 40 is provided with the guest host type liquid crystal layer 44 is shown, but the TN (Twisted Nematic) method, the VA (Vertical Alignment) method, and the IPS that do not use the dichroic dye composition are shown. The configuration may include a liquid crystal layer 44 such as a (In-Plane-Switching) method. When such a liquid crystal layer 44 is provided, it can function as a light control film by further providing a linear polarizing layer on the surface of each of the base materials 41A and 41B. In the case of an IPS liquid crystal layer, the electrode may be on one side of the liquid crystal layer.

Next, the action of the buffer 50 laminated on the light control film 40 will be described. As described above, the buffer 50 is laminated so as to be relatively movable with the light control film 40 (film surface 40a). Therefore, as shown in FIG. 1C, a contact portion c1 and a space portion c2 (gap) are randomly formed between the buffer 50 and the light control film 40. Here, the space portion c2 is a space in a vacuum state or in which a small amount of air exists. As described above, since the space portion c2 is provided between the buffer 50 and the light control film 40, the buffer 50 and the light control film 40 are formed in the XY plane of the laminated glass 1 (see FIG. 1 (A)). In the state where they can move to each other. Therefore, during the production of the laminated glass 1, the pressure applied to the buffer 50 via the interlayer film 30 is mainly dispersed by the movement of the buffer 50 on the XY plane. That is, in the buffer 50, when an excessive pressure is applied to a certain region as compared with another region, the buffer 50 moves substantially parallel to the XY plane, so that a part of the excessive pressure is applied. It is dispersed on the XY plane. As described above, in the production of the laminated glass 1, the non-uniformity of the pressure applied to the light control film 40 is alleviated by the buffer 50.

As described above, according to the laminated glass 1 of the first embodiment, the non-uniformity of the pressure applied to the light control film 40 is alleviated during the production of the laminated glass 1, and the pressure becomes substantially uniform. Uneven distribution of liquid crystal in the film 40 can be suppressed. Therefore, the laminated glass 1 of the first embodiment has a good appearance and is also excellent in dimming performance.

Further, in the laminated glass 1 of the first embodiment, a space portion c2 (see FIG. 1C) is formed between the buffer 50 and the light control film 40. Therefore, due to the difference in refractive index between the light control film 40 and the space portion c2, reflection occurs at the interface between the light control film 40 and the space portion c2. Further, due to the difference in refractive index between the buffer 50 and the space c2, reflection occurs at the interface between the buffer 50 and the space c2. When the light control film 40 is put into a light-shielding state by these interfacial reflections, the laminated glass 1 has a mirror-like appearance when viewed from above or below. Therefore, the laminated glass 1 of the first embodiment can be switched between a mirror surface state and a transmission state.

Next, a method for manufacturing the laminated glass 1 will be described. 3 and 4 are diagrams showing a manufacturing process of the laminated glass 1 in the first embodiment. First, as shown in FIG. 3A, the first interlayer film 30a is formed on the first glass plate 10. The first intermediate film 30a, the second intermediate film 30b, and the third intermediate film 30c become an integrated intermediate film 30 in the crimping step described later.

Next, as shown in FIG. 3B, the light control film 40 is laminated on the first interlayer film 30a (light control film laminating step). Next, as shown in FIG. 3C, the buffer 50 is laminated on the light control film 40 so as to be relatively movable with the light control film 40 (buffer lamination step).

Next, as shown in FIG. 4D, the third intermediate film 30c is laminated on the region excluding the light control film 40 and the buffer 50 on the first interlayer film 30a. Further, the second intermediate film 30b is laminated on the buffer 50 and the third intermediate film 30c. In the example shown in FIG. 4D, the third intermediate film 30c and the second intermediate film 30b are laminated in this order, but the third intermediate film 30c and the second intermediate film 30b are integrally laminated. You may.

Next, as shown in FIG. 4 (E), the second glass plate 20 is laminated on the second interlayer film 30b, and the first glass plate 10, the first interlayer film 30a, the light control film 40, and the shock absorber are laminated. 50, a laminated body 1A composed of a second interlayer film 30b and a second glass plate 20 is formed. The laminated body 1A is sealed in a vacuum bag (not shown), and the air inside is sucked to put the laminated body 1A in a pressurized state. Further, a vacuum bag containing the pressurized laminate 1A is placed in an oven (not shown) and heated at a predetermined temperature. Even during heating in the oven, air is continuously sucked from the vacuum bag. By heating and pressurizing the laminated body 1A in this way, each member of the laminated body 1A is crimped (crimping step).

Then, after heating and pressurizing in the oven for a predetermined time, the suction of air in the vacuum bag is stopped, and the vacuum bag is taken out from the oven and cooled. The suction of air in the vacuum bag may be stopped after the vacuum bag is taken out of the oven. After cooling the vacuum bag, the laminated glass 1A (laminated glass 1) is taken out from the vacuum bag to obtain a laminated glass 1 sandwiching the light control film 40 as shown in FIG. 4 (E).

The laminated body 1A taken out from the vacuum bag may be transferred to a pressure vessel for eau de clave (not shown) and further heated and pressurized for a predetermined time in a high temperature and high pressure environment. Further, the vacuum bag may be placed in an autoclave device instead of an oven and heated to perform not only pressurization by suction but also further pressurization.

(Second Embodiment)
FIG. 5 is an enlarged view showing a part of the laminated glass 11 in the second embodiment. FIG. 5 is an enlarged view corresponding to the region b in FIG. 1 (B), as in FIG. 1 (C). The laminated glass 11 of the second embodiment is different from the first embodiment in that a spacer 60 is provided between the light control film 40 and the buffer 50. Therefore, in the description and drawings of the second embodiment, the illustration and description of the entire laminated glass 11 will be omitted. Further, in the description and drawings of the second embodiment, members and the like equivalent to those of the first embodiment are designated by the same reference numerals as those of the first embodiment, and duplicate description will be omitted.

As shown in FIG. 5, the laminated glass 11 of the second embodiment is provided with a plurality of spacers 60 between the light control film 40 and the buffer 50. As the spacer 60, for example, a spherical transparent bead spacer can be used. The bead spacer used for the spacer 60 may be the same as or different from the spacer 45 of the light control film 40 described above. By using a transparent bead spacer as the spacer 60, the appearance when the laminated glass 11 is in a transparent state can be improved. It is desirable that the diameter of the spacer 60 is larger than the surface roughness (for example, the maximum height) of the buffer 50.

By providing a plurality of spacers 60 between the light control film 40 and the buffer 50, as shown in FIG. 5, a space c2 can be formed on substantially the entire surface between the light control film 40 and the buffer 50. As described above, since the space portion c2 is in a vacuum state or a space in which a small amount of air is present, a vacuum state or a small amount of air is present in almost the entire surface between the light control film 40 and the buffer 50. It can be a space that is open. According to this, the space portion c2 formed between the light control film 40 and the buffer 50 makes it difficult for heat to be transferred from the light control film 40 to the buffer 50 and from the buffer 50 to the light control film 40. The heat insulating effect of the laminated glass 11 can be enhanced.

In the laminated glass 11 of the second embodiment, the uneven distribution of the liquid crystal can be suppressed as in the laminated glass 1 of the first embodiment. Further, also in the laminated glass 11 of the second embodiment, when the laminated glass 11 is in a light-shielding state, an appearance like a mirror surface can be obtained as in the laminated glass 1 of the first embodiment. That is, even when a plurality of spacers 60 are provided between the light control film 40 and the buffer 50, it is possible to switch between the mirror surface state and the transmission state.

Although the embodiments of the present disclosure have been described above, the embodiments are not limited to the above-described embodiments, and various modifications and changes can be made as in the modified embodiments described later, which are also within the technical scope. .. Moreover, the effects described in the embodiments are merely a list of the most suitable effects, and are not limited to those described in the embodiments. The above-described embodiment and the modified form described later may be used in combination as appropriate, but detailed description thereof will be omitted.

(Transformed form)
As the shock absorber 50, a film having a function of a transparent screen (hereinafter, also referred to as “transparent screen film”) that reflects and displays the image light projected from the image source and transmits the light from the front and back surfaces is used. You may. A transparent screen has a function of reflecting and displaying the image light projected from an image source and transmitting at least a part of the light from the front and back surfaces, so that the scenery on the other side of the screen can be seen through. At the same time, it is a reflective screen that can project image light. FIG. 6 is a diagram showing an example of the configuration of the buffer 70 in the modified form. In FIG. 6, the buffer 70 and the light control film 40 are shown in order to make the layer structure easy to understand. However, since the structure of the light control film 40 is the same as that of the first embodiment, the description thereof will be omitted.

As shown in FIG. 6, the buffer 70 of the present modified form includes, for example, a base material layer 71, a first optical shape layer 72, a reflection layer 73, a second optical shape layer 74, and a protective layer 75. The base material layer 71 is a sheet-like member having light transmission, and the first optical shape layer 72 is integrally formed on the side of the light control film 40 (hereinafter, also referred to as “back surface side”). The base material layer 71 is a layer serving as a base material (base) for forming the first optical shape layer 72. The base material layer 71 is, for example, a polyester resin such as PET (polyethylene terephthalate) having high light transmittance, an acrylic resin, a styrene resin, an acrylic / styrene resin, a PC (polycarbonate) resin, an alicyclic polyolefin resin, and a TAC (tri). Acetylcellulose) It is formed of resin or the like.

The first optical shape layer 72 is a light-transmitting layer formed on the back surface side of the base material layer 71. A plurality of unit optical shapes 72A are arranged and provided on the first optical shape layer 72. As shown in FIG. 6, the unit optical shape 72A has a substantially triangular cross-sectional shape in a cross section parallel to the X direction and parallel to the arrangement direction of the unit optical shape 72A.

The unit optical shape 72A is convex on the back surface side, and has a first slope 72Aa on which light is incident and a second slope 72Ab facing the first slope 72Aa. In one unit optical shape 72A, the first slope 72Aa is located on the upper side (base material layer 71 side) of the second slope 72Ab with the apex a in between. The first slope 72Aa and the second slope 72Ab of the unit optical shape 72A have a fine and irregular uneven shape. The fine uneven shape is formed by arranging the convex shape and the concave shape irregularly in the two-dimensional direction, and the convex shape and the concave shape have irregular sizes, shapes, heights, and the like.

A circular Fresnel lens shape may be formed on the back surface of the first optical shape layer 72, or a linear Fresnel lens shape may be formed. Further, the columnar unit prisms may be formed in a plurality of columns in the left-right direction (X direction) with the depth direction in the drawing as the longitudinal direction. The first optical shape layer 72 is formed of, for example, an ultraviolet curable resin such as a urethane acrylate-based, polyester acrylate-based, epoxy acrylate-based, polyether acrylate-based, polythiol-based, or butadiene acrylate-based resin having high light transmittance.

The reflective layer 73 is formed on the unit optical shape 72A (on the first slope 72Aa and the second slope 72Ab). The reflective layer 73 is a semi-transmissive reflective layer, a so-called half mirror, that reflects a part of the incident light and transmits the other. The reflective layer 73 has a function of diffusing and reflecting a part of the incident light due to the fine uneven shape of the reflecting surface, and transmitting other non-reflected light without diffusing it.

The reflective layer 73 is formed of a metal having high light reflectivity, for example, aluminum, silver, nickel, or the like. These metals may be formed by sputtering. Further, as the reflective layer 13, a dielectric multilayer film in which a plurality of dielectric films having a high refractive index and a dielectric film having a low refractive index are alternately laminated may be used. The dielectric film having a high refractive index is formed of, for example, TIO ₂ (titanium dioxide), Nb ₂ O ₅ (niobium pentoxide), Ta ₂ O ₅ (tantalum pentoxide), or the like. The dielectric film having a low refractive index is formed of, for example, SiO ₂ (silicon dioxide), MgF ₂ (magnesium fluoride), or the like.

The second optical shape layer 74 is a light-transmitting layer provided on the back surface side of the first optical shape layer 72. The second optical shape layer 74 is filled so as to fill the valley between the unit optical shapes 72A, and the surface on the back surface side of the first optical shape layer 72 is flattened. The surface of the second optical shape layer 74 on the base material layer 71 side is formed by arranging a plurality of substantially inverted shapes of the unit optical shape 72A of the first optical shape layer 72. By providing such a second optical shape layer 74, the reflective layer 73 can be protected. Further, by providing such a second optical shape layer 74, the protective layer 75 can be easily laminated on the back surface side.

The refractive index of the second optical shape layer 74 is preferably substantially the same as that of the first optical shape layer 72 (a state in which the refractive index difference is small enough to be regarded as equivalent), and it is desirable that the refractive index is the same. The second optical shape layer 74 may be formed by using the same resin as the first optical shape layer 12 described above, or may be formed by using a different resin.

The protective layer 75 is a light-transmitting layer formed on the back surface side of the second optical shape layer 74, and has a function of protecting the back surface side of the buffer 70. As the protective layer 75, a sheet-like member made of resin having high light transmission is used. As the protective layer 75, for example, a sheet-like member formed by using the same material as the above-mentioned base material layer 71 may be used. The protective layer 75 may be omitted.

When the transparent screen film as described above is used as the buffer 70, the laminated glass 1 can be provided with a display function such as an image. In addition, the dark state when the laminated glass 1 is in a light-shielding state can be made darker. Further, the light control film 40 may be used as the buffer 50. In this case, the light control film 40 and the light control film 40 used as the buffer 50 do not have to have the same configuration, and some configurations may be different from each other. In this way, by using the light control film 40 as the buffer 50, the dark state when the laminated glass 1 is in a light-shielding state can be made darker.

As shown in FIG. 1B, the shock absorber 50 is not limited to the configuration in which the light control film 40 is laminated on the surface of the light control film 40 on the second glass plate 20 side, and the surface of the light control film 40 on the first glass plate 10 side. And may be laminated on both the surface on the second glass plate 20 side. In this case, as a pre-step of the dimming film laminating step shown in FIG. 3B, a second buffer (not shown) is laminated on the first interlayer film 30a, and subsequently, as a dimming film laminating step, The light control film 40 may be laminated on the second buffer. The second buffer is laminated so as to be relatively movable with respect to the light control film 40. Then, in the (buffer laminating step) shown in FIG. 3C, the first buffer (corresponding to the buffer 50) may be laminated on the light control film 40.

As described above, by providing the laminated glass 1 with two buffers (first and second buffers), it is possible to impart functionality to the laminated glass 1 according to the intended use. For example, when a laminated glass 1 provided with two buffers is applied to a vehicle window, the buffer having an ultraviolet absorbing function is arranged on the outdoor side, and the buffer having a sound insulating function is arranged on the indoor side. Therefore, the functionality of the laminated glass 1 applied as the window of the vehicle can be further enhanced.

Further, in the configuration in which the laminated glass 1 is provided with two buffers (first and second buffers), the spacer 60 (see FIG. 5) is provided between the first buffer and the light control film 40 or as a second buffer. It may be provided between the body and the light control film 40, or may be provided between the first buffer and the light control film 40 and between the second buffer and the light control film 40, respectively.

The surface shape of the laminated glass 1 is not limited to the two-dimensional shape, and may be, for example, a three-dimensional shape that is convex toward one surface side. Here, the three-dimensional shape is a curved surface that cannot be formed only by deforming a plane without expansion and contraction, and is a curved surface defined by two independent parameters in a three-dimensional space. For example, a curved surface having two curvature criteria as parameters, a radius of curvature Rx centered on the X axis and a radius of curvature Ry centered on the Y axis, with the orthogonal X-axis and the Y-axis as the central axes, can be exemplified.

(Third Embodiment)
Next, the third embodiment will be described with reference to FIGS. 7 to 13.

The dimming device 110 described below can be applied to various technical fields in which adjustment of light transmittance is required, and the scope of application is not particularly limited. The dimming device 110 can be arranged in a building, a vehicle, or the like in the same manner as described above for the laminated glass 1.

The dimming device 110 described below merely illustrates one embodiment. Therefore, for example, some of the elements listed below as components of the dimmer 110 may or may not be replaced with other elements. Further, elements not listed below may be included as components of the dimmer 110. Further, in the drawings, for convenience of illustration and comprehension, the scale, the dimensional ratio, and the like are appropriately changed or exaggerated from those of the actual product.

(Dimmer)
FIG. 7 is a diagram showing a dimming device (laminated glass) 110 according to the present embodiment. The dimming device 110 according to the present embodiment is configured to have a three-dimensional shape having a curved surface shape, and in FIG. 7, as an example, the dimming device 110 has a shape that is convex toward one surface side. are doing. The dimming device 110 is not limited to this, and for example, the surface shape may be a flat shape (that is, a flat plate shape), or a two-dimensional shape having a curved surface shape (for example, a part of a cylinder). It may be a constituent shape) or the like. Here, the three-dimensional shape is not a simple cylindrical surface, but a curved surface that cannot be constructed only by deforming a plane without expansion and contraction, and is a two-dimensional shape (two-dimensional) that is bent two-dimensionally about a single axis. It is distinguished from a curved surface) or a two-dimensional shape (two-dimensional curved surface) that is two-dimensionally curved with different curvatures around a plurality of axes parallel to each other. That is, the three-dimensional shape is a shape formed by a surface that is partially or wholly bent around each of a plurality of axes inclined with respect to each other. Further, in the present specification, the plan view means a state viewed from a direction perpendicular to the main surface of the dimmer 110.

As shown in FIG. 7, the dimming device 110 according to the present embodiment includes the first glass plate 111, the first interlayer film 113, the dimming cell 120, the second interlayer film 114, and the second glass plate 112. It has. The first glass plate 111, the first interlayer film 113, the dimming cell 120, the second intermediate film 114, and the second glass plate 112 are laminated and arranged in this order.

FIG. 8 is a cross-sectional view showing the layer structure of the dimming device 110 according to the present embodiment, and FIG. 9 is an exploded perspective view showing the layer structure of the dimming device 110 according to the present embodiment. The dimming device 110 of the present embodiment has a three-dimensional surface shape, but in FIGS. 8 and 9, the surface shape of the dimming device 110 is flat in order to facilitate understanding. The cross-sectional view in the case of is shown.

As shown in FIG. 8, the dimming device 110 includes a first glass plate 111, a second glass plate 112, and a dimming cell 120 arranged between the first glass plate 111 and the second glass plate 112. It has. The dimming cell 120 includes a first laminated body 121 including a first base material 124, a first transparent electrode 125, and a first alignment layer 126, a second base material 127, a second transparent electrode 128, and a second alignment layer 129. A second laminated body 122 including the above, and a liquid crystal layer 123 arranged between the first laminated body 121 and the second laminated body 122 are provided.

The first glass plate (transparent member) 111 and the second glass plate (transparent member) 112 are plate glass having high translucency, which are arranged on the front and back surfaces of the dimming device 110, respectively. The surface shapes of the first glass plate 111 and the second glass plate 112 are three-dimensional shapes having a curved surface shape, and are formed in advance into a shape having a curved surface shape that is convex on one surface side (see FIG. 7). ). In this case, the first glass plate 111 and the second glass plate 112 are formed so that the first glass plate 111 side is convex with respect to the second glass plate 112 side, but the present invention is not limited to this. It may be formed so that the second glass plate 112 side is convex with respect to the glass plate 111 side. Further, in the present embodiment, the first glass plate 111 and the second glass plate 112 have a thickness of 1 mm or more and 4 mm or less, and as an example, plate glass having a thickness of 2 mm is used. As the first glass plate 111 and the second glass plate 112, the same ones as those of the first glass plate 10 and the second glass plate 20 described above can be used.

The first interlayer film 113 is a member that joins the first glass plate 111 and the dimming cell 120. Similarly, the second interlayer film 114 is a member that joins the second glass plate 112 and the dimming cell 120. As the first intermediate film 113 and the second intermediate film 114, the same ones as those described above can be used. Further, the thicknesses of the first interlayer film 113 and the second interlayer film 114 may be appropriately selected depending on the material and the like. Specifically, the thickness of the first intermediate film 113 and the second intermediate film 114 may be 300 μm or more and 2.5 mm or less, and one having a thickness of 760 μm is used as an example.

Further, as shown in FIGS. 8 and 9, the first intermediate film 113 and the second intermediate film 114 are connected to each other by a frame intermediate film (third intermediate film) 116. The frame interlayer film 116 is an interlayer film having a frame shape or a square shape (a quadrangular shape with a hollowed out center) in a plan view. The frame interlayer film 116 may be made of the same material as the first intermediate film 113 and the second intermediate film 114. By providing the frame interlayer film 116, it is possible to suppress the intrusion of moisture and the like from the side surface of the dimmer 110 and further enhance the water impermeability of the dimmer 110.

Specifically, the frame interlayer film 116 is formed on the thick portion of the dimming cell 120 in cross-sectional view when the first intermediate film 113 and the second intermediate film 114 are larger than the dimming cell 120 (in a plan view). It is an interlayer film that is formed. The frame intermediate film 116 is formed so as to surround the dimming cell 120 in a plan view, and is a frame-shaped intermediate formed by hollowing out the shape of the dimming cell 120 from the shapes of the first intermediate film 113 and the second intermediate film 114. It is a membrane. In this case, the frame intermediate film 116 is formed between the first intermediate film 113 and the second intermediate film 114 and in a portion corresponding to the periphery of the dimming cell 120. Further, a frame intermediate film 116 is also formed between the first intermediate film 113 and the second intermediate film 114 and corresponding to the periphery of the film 133 (described later) and the void layer G (described later). The width W1 (FIG. 9) of the frame interlayer film 116 is preferably about 0 mm or more and 10 mm or less.

The light control cell 120 (light control film, liquid crystal film) is a film capable of controlling the amount of transmitted light by changing the applied voltage. The dimming cell 120 is arranged so as to be sandwiched between the first glass plate 111 and the second glass plate 112. The dimming cell 120 has a guest-host type liquid crystal layer using a dichroic dye, and is a member that changes the amount of transmitted light by an electric field applied to the liquid crystal. The dimming cell 120 includes a film-shaped first laminated body 121, a film-shaped second laminated body 122, and a liquid crystal layer 123 arranged between the first laminated body 121 and the second laminated body 122. ing.

As shown in FIG. 8, the first laminated body 121 is formed by laminating a first base material 124, a first transparent electrode 125, and a first alignment layer 126. That is, from the first interlayer film 113 side, the first base material 124, the first transparent electrode 125, and the first alignment layer 126 are laminated and arranged in this order. Further, the second laminated body 122 is formed by laminating a second base material 127, a second transparent electrode 128, and a second orientation layer 129. That is, the second base material 127, the second transparent electrode 128, and the second alignment layer 129 are laminated and arranged in this order from the second interlayer film 114 side.

Further, a plurality of bead spacers 131 are arranged between the first laminated body 121 and the second laminated body 122. The liquid crystal layer 123 is packed and arranged between the plurality of bead spacers 131 between the first laminated body 121 and the second laminated body 122. The plurality of bead spacers 131 may be arranged irregularly or regularly, respectively.

The dimming cell 120 is based on the guest host liquid crystal composition provided on the liquid crystal layer 123 by driving the first transparent electrode 125 and the second transparent electrode 128 provided on the first laminated body 121 and the second laminated body 122. The orientation of the liquid crystal material is changed, thereby changing the amount of transmitted light.

As the first base material 124 and the second base material 127, the same ones as the above-mentioned base materials 41A and 41B can be used. The thickness of the transparent resin film used as the first base material 124 and the second base material 127 can be appropriately selected within the range in which the transparent resin film has flexibility, although it depends on the material. The thickness of the first base material 124 and the second base material 127 may be 50 μm or more and 200 μm or less, respectively. In the present embodiment, a polyethylene terephthalate film having a thickness of 100 μm is applied as an example of the first base material 124 and the second base material 127.

The first transparent electrode 125 and the second transparent electrode 128 are composed of a transparent conductive film laminated on the first base material 124 and the second base material 127 (transparent resin film), respectively. As the first transparent electrode 125 and the second transparent electrode 128, the same transparent electrodes 42A and 42B as described above can be used.

The bead spacer 131 is a member that defines the thickness (cell gap) of the portion of the liquid crystal layer 123 excluding the outer peripheral portion. In this embodiment, a spherical bead spacer is used as the bead spacer 131. The diameter of the bead spacer 131 may be in the range of 1 μm or more and 20 μm or less, preferably 3 μm or more and 15 μm or less. As the bead spacer 131, the same one as the spacer 45 described above can be used.

In the present embodiment, the bead spacer 131 is provided on the second laminated body 122, but is not limited to this, and both the first laminated body 121 and the second laminated body 122, or the first laminated body 122 is not limited to this. It may be provided only on the body 121. Further, the bead spacer 131 may not always be provided. Alternatively, a columnar spacer may be used instead of the bead spacer 131 or together with the bead spacer 131.

As the first alignment layer 126 and the second alignment layer 129, the same ones as those of the orientation layers 43A and 43B described above can be used.

A rubbing oriented layer may be used instead of the photo oriented layer. The rubbing alignment layer may not be subjected to the rubbing treatment, or may be subjected to the rubbing treatment to form a fine line-shaped uneven shape to prepare the alignment layer. In the present embodiment, the dimming cell 120 includes the first alignment layer 126 and the second alignment layer 129, but is not limited to this, and does not include the first alignment layer 126 and the second alignment layer 129. May be.

As the liquid crystal layer 123, the same one as the liquid crystal layer 44 described above can be used. Further, between the first laminated body 121 and the second laminated body 122, an annular or frame-shaped sealing material 132 is arranged so as to surround the liquid crystal layer 123 in a plan view. The sealing material 132 integrally holds the first laminated body 121 and the second laminated body 122, and prevents leakage of the liquid crystal material. As the sealing material 132, the same material as the sealing material 46 described above can be used.

As the light control cell 120, the same one as the light control film 40 described above can be used.

In the present embodiment, the film 133 is arranged between the dimming cell 120 and the first interlayer film 113. This film 133 is arranged between the first base material 124 and the first intermediate film 113 of the dimming cell 120, and is bonded to the first intermediate film 113. The film 133 is made of a transparent resin and may be a flexible resin film. As the film 133, it is desirable to apply a transparent resin film having a small optical anisotropy and a transmittance of 80% or more in a wavelength in the visible region (380 nm or more and 800 nm or less). As the material of the transparent resin film, the same material as the transparent resin film used for the first base material 124 and the second base material 127 described above can be used. Alternatively, as the film 133, a functional film such as an infrared (IR) reflective film or an ultraviolet (UV) cut film may be used. Further, the film 133 has a light control cell, an AR (Anti-Reflection) film, an AG (Anti-Glare) film, a reflective polarizing film, a light control film having a light control method other than the liquid crystal, or a defroster function. It may be a film. The thickness of the film 133 may be, for example, 50 μm or more and 250 μm or less, and preferably 100 μm or more and 125 μm or less, although it depends on the material.

Further, the planar shape of the film 133 is smaller than the planar shape of the first intermediate film 113 and the second intermediate film 114. Further, the planar shape of the film 133 is preferably smaller than the planar shape of the entire dimming cell 120 and larger than the planar shape of the liquid crystal layer 123 located inside the sealing material 132. As a result, since the film 133 covers the entire liquid crystal layer 123, it is possible to suppress the occurrence of liquid crystal pools, which is a phenomenon in which a large amount of liquid crystal is locally present in a part of the liquid crystal layer 123, in the entire in-plane area. The planar shape of the film 133 may be made smaller than the inside of the sealing material 132 (liquid crystal layer 123) of the light control cell 120, and a liquid crystal pool may be guided to a region where the film 133 does not exist. The portion (outer circumference) in which the liquid crystal pool is guided in this way can be hidden when the dimming device 110 is arranged in a vehicle window or the like. In addition, functional films such as infrared (IR) reflective film, ultraviolet (UV) cut film, AR (Anti-Reflection) film, and AG (Anti-Glare) film are added between the film 133 and the dimming cell 120. You may. In this case, the functional film may be attached to the film 133 or the light control cell 120. Further, the functional film may be added between the first interlayer film 113 and the film 133.

Further, a void layer G is provided between the light control cell 120 and the film 133. The void layer G is formed in the space between the first base material 124 of the light control cell 120 and the film 133. That is, the first base material 124 of the light control cell 120 and the film 133 are not bonded to each other and are arranged at regular intervals in the thickness direction. The void layer G is filled with air, but the present invention is not limited to this, and a gas such as nitrogen or an inert gas may be filled. The thickness of the void layer G is, for example, larger than 0 μm and 10000 μm or less, and preferably 0.1 μm or more and 100 μm or less. The planar shape of the void layer G may be substantially the same as the planar shape of the film 133. By forming the void layer G between the dimming cell 120 and the film 133 in this way, as will be described later, the cell gap defect of the dimming cell 120 is reduced, and it is locally localized in a part of the liquid crystal layer 123. It is possible to suppress the occurrence of liquid crystal pools, which is a phenomenon in which a large amount of liquid crystal is present. Further, by providing the gap layer G between the dimming cell 120 and the film 133, the heat insulating property of the dimming device 110 can be improved, and the heat retention of the vehicle or building in which the dimming device 110 is arranged can be improved. it can. Further, when the dimming cell 120 is in a light-shielded state, the dimming device 110 is viewed from the first glass plate 111 side due to reflection at the interface between the dimming cell 120 and the void layer G and the interface between the film 133 and the void layer G. Is observed in a mirror surface.

As shown in FIG. 9, the dimming device 110 is connected to the dimming controller 191 and the sensor device 192 and the user operation unit 193 are connected to the dimming controller 191. The dimming controller 191 can control the dimming state of the dimming device 110, switch between blocking and transmitting light by the dimming device 110, and change the light transmittance in the dimming device 110. Specifically, the dimming controller 191 is connected to the external electrode substrate 135 of the dimming device 110 and adjusts the electric field applied to the liquid crystal layer 123 of the dimming device 110 to orient the liquid crystal molecules in the liquid crystal layer 123. By changing the light, the light blocking and transmission by the dimming device 110 can be switched, and the light transmittance can be changed.

The dimming controller 191 can adjust the electric field applied to the liquid crystal layer 123 based on an arbitrary method. The dimming controller 191 adjusts the electric field applied to the liquid crystal layer 123 in response to the measurement result of the sensor device 192 or the instruction (command) input by the user via the user operation unit 193, and the dimming device 110 adjusts the electric field. It is possible to switch between blocking and transmitting light, and to change the transmittance of light. Therefore, the dimming controller 191 may automatically adjust the electric field applied to the liquid crystal layer 123 according to the measurement result of the sensor device 192, or manually according to the user's instruction via the user operation unit 193. May be adjusted to. The measurement target by the sensor device 192 is not particularly limited, and for example, the brightness of the usage environment may be measured. In this case, the light blocking and transmission switching and the light transmittance change by the dimming device 110 are used. It is done according to the brightness of the environment. Further, it is not always necessary that both the sensor device 192 and the user operation unit 193 are connected to the dimming controller 191, and only one of the sensor device 192 and the user operation unit 193 may be connected. ..

The external electrode substrate 135 is sandwiched between the first laminated body 121 and the second laminated body 122. In the region where the external electrode substrate 135 is formed, the first laminated body 121 and the second laminated body 122 have an electrode projecting piece 136 that projects outward in the plane direction. The external electrode substrate 135 is embedded inside the projecting piece 136 for electrodes. As shown by the arrow in FIG. 9, the external electrode substrate 135 and the projecting piece 136 for the electrode are sandwiched between the frame intermediate film 116 and the second intermediate film 114, and are outside the frame intermediate film 116 and the second intermediate film 114. It protrudes toward you. However, the present invention is not limited to this, and the external electrode substrate 135 and the projecting piece 136 for electrodes may be sandwiched between the frame interlayer film 116 and the first interlayer film 113.

(Manufacturing method of dimming cell)
Next, a method of manufacturing the dimming cell 120 of the dimming device 110 according to the present embodiment will be described with reference to FIGS. 10 (a)-(d) and 11 (a)-(c). 10 (a)-(d) and 11 (a)-(c) are cross-sectional views showing a method of manufacturing the dimming cell 120 according to the present embodiment.

First, as shown in FIG. 10A, the second base material 127 supplied in a roll shape is prepared. Subsequently, as shown in FIG. 10B, a second transparent electrode 128 made of, for example, ITO is formed on the second base material 127 by sputtering or the like using a sputtering apparatus. At this time, the transparent electrode may be patterned so as to have a predetermined pattern shape.

Next, as shown in FIG. 10 (c), the coating liquid according to the second alignment layer 129 is applied onto the second base material 127 on which the second transparent electrode 128 is formed, and then exposed to the second orientation. Layer 129 is made. In this way, the second laminated body 122 in which the second base material 127, the second transparent electrode 128, and the second alignment layer 129 are laminated is prepared.

In the same manner as in the steps shown in FIGS. 10A to 10C, a first laminated body 121 in which the first base material 124, the first transparent electrode 125, and the first alignment layer 126 are laminated is also prepared. To do.

Subsequently, as shown in FIG. 10D, the bead spacer 131 is arranged on the second oriented layer 129 of the second laminated body 122. In addition to wet / dry spraying, various arrangement methods can be widely applied to the arrangement of the bead spacer 131. For example, beads are randomly placed on the second alignment layer 129 by partially coating a coating liquid produced by dispersing the bead spacer 131 together with a resin component in a solvent, and then sequentially executing drying and firing processes. The spacer 131 may be arranged to hold it difficult to move. Although not shown, the outer circumference of the bead spacer 131 may be covered with the second alignment layer 129. Specifically, by mixing the bead spacer 131 with the coating liquid related to the second alignment layer 129 to form the second alignment layer 129, the bead spacer 131 is thinly covered and held by the second alignment layer 129. Can be in the form of

Next, as shown in FIG. 11A, the sealing material 132 is applied onto the second oriented layer 129 of the second laminated body 122 using a dispenser. The sealing material 132 is applied in a frame shape so as to surround the portion where the liquid crystal layer 123 is produced.

Next, as shown in FIGS. 11B and 11C, the second laminated body 122 and the first laminated body 121 are laminated with each other, and the liquid crystal layer 123 is arranged. During this period, first, as shown in FIG. 11B, the liquid crystal constituting the liquid crystal layer 123 is dropped onto the region surrounded by the sealing material 132. At this time, the liquid crystal layer 123 is inside the sealing material 132 and is filled around the bead spacer 131.

Subsequently, as shown in FIG. 11C, the second laminated body 122 on which the liquid crystal layer 123 is arranged and the first laminated body 121 prepared in advance are laminated and pressed against each other. Then, the sealing material 132 is semi-cured by irradiating with ultraviolet rays and then heated, whereby the first laminated body 121 and the second laminated body 122 are integrated. Then, the laminated body of the first laminated body 121 and the second laminated body 122 produced in this manner is trimmed to be cut into a desired size.

As described above, after arranging the liquid crystal layer 123, it is preferable that the second laminated body 122 and the first laminated body 121 are laminated with each other, but the present invention is not limited to this, and the second laminated body 122 and the first laminated body are not limited to this. The liquid crystal layer 123 may be arranged after the bodies 121 and the body 121 are laminated with each other. Then, by attaching the external electrode substrate 135 (see FIG. 9) between the first laminated body 121 and the second laminated body 122, the dimming cell 120 according to the present embodiment can be obtained.

(Manufacturing method of dimmer)
Next, the manufacturing method (laminated glass processing method) of the dimming device 110 according to the present embodiment will be described with reference to FIGS. 12 (a)-(c). 12 (a)-(c) are cross-sectional views showing a method of manufacturing the dimming device 110.

First, as shown in FIG. 12A, the first glass plate 111 and the second glass plate 112 are prepared, and the first glass plate 111 and the second glass plate 112 form the first interlayer film 113 and the frame interlayer film 116. And the film 133, the dimming cell 120, and the second interlayer film 114, and the laminated glass laminate 130 is produced. Here, the first glass plate 111 and the second glass plate 112 are preformed with a curved surface shape having a three-dimensional surface shape.

Next, as shown in FIG. 12B, the laminated glass laminate 130 is sealed in the bag 151. The bag 151 is preferably made of rubber or silicon having flexibility and airtightness. Further, a ventilation pipe 152 is connected to the bag 151, and the air in the bag 151 is sucked through the ventilation pipe 152 by a pump (not shown). As a result, the air remaining between the members of the laminated glass laminate 130 can be sucked, and crimping defects due to air bubbles or the like remaining inside the dimming device 110 can be suppressed. In the present embodiment, the inside of the bag 151 and the inside of the laminated glass laminate 130 are sucked so as to be in a vacuum state, and a pressure of about atmospheric pressure (0.1 MPa) is applied to the laminated glass laminate 130 by a differential pressure. Will be explained. However, the present invention is not limited to this, for example, by adjusting the suction force of a pump (not shown), the inside of the bag 151 is not completely evacuated, but the air between the members of the laminated glass laminate 130 is sufficiently sucked and the laminated glass is sufficiently sucked. A pressure smaller than the atmospheric pressure may be applied to the laminated body 130 due to the differential pressure.

Subsequently, as shown in FIG. 12 (c), the glass laminate 130 is sealed in the bag 151, and then the bag 151 is placed in the heating / pressurizing device 153. Subsequently, the laminated glass laminate 130 together with the bag 151 is heated at a predetermined temperature and time. In the present embodiment, the laminated glass laminate 130 is heated for a predetermined time at a temperature equal to or higher than the softening temperature of the first interlayer film 113, the second interlayer film 114, and the frame intermediate film 116. At this time, it is preferable to suck the air in the bag 151 through a pump (not shown) through the ventilation pipe 152. The device used as the heating / pressurizing device 153 is not particularly limited as long as it can sufficiently heat and pressurize the laminated glass laminate 130, and examples thereof include a device for an oven and an autoclave. By this heating, the first intermediate film 113, the second intermediate film 114, and the frame intermediate film 116 are melted, and the first glass plate 111, the first intermediate film 113, the frame intermediate film 116, and the film 133 of the laminated glass laminate 130 are melted. The dimming cell 120, the second interlayer film 114, and the second glass plate 112 are crimped and integrally joined to obtain a dimming device 110. At this time, since the film 133 and the dimming cell 120 are not directly bonded to each other, a void layer G is formed between them. Since the gap layer G is provided, the pressure applied to the liquid crystal layer 123 of the dimming cell 120 is released after the dimming device 110 is manufactured, so that the liquid crystal layer 123 is unevenly distributed in the dimming cell 120. Even if there is, the uneven distribution of the liquid crystal layer 123 is naturally eliminated.

Then, the laminated glass laminate 130 (dimming device 110) is heated for a predetermined time at a temperature equal to or higher than the softening temperature of the first interlayer film 113, the second interlayer film 114, and the frame intermediate film 116, thereby causing a cell gap (liquid crystal layer). A step (leveling step) of making the thickness of 123) uniform may be performed.

By the way, during the laminated glass processing for manufacturing the dimmer 110 in this way, pressure is applied to each member of the laminated glass laminate 130. At this time, the original cell gap (thickness of the liquid crystal layer 123) is maintained at the portion where the spacer (bead spacer 131) is located, but when the space is separated from the bead spacer 131, the value becomes smaller than the original cell gap value. .. If the cell gap is uneven, the quality of the dimming device 110 may be deteriorated, such as poor appearance or non-uniform dimming function.

On the other hand, according to the present embodiment, the film 133 is arranged between the dimming cell 120 and the first interlayer film 113, and the void layer G is provided between the dimming cell 120 and the film 133. ing. As a result, even when a liquid crystal pool (a phenomenon in which a large amount of liquid crystal is locally present) occurs in the liquid crystal layer 123 of the dimming cell 120, the pressure applied to the liquid crystal layer 123 is released after the production of the dimming device 110. At that time, the dimming cell 120 naturally moves so that the cell gap (thickness of the liquid crystal layer 123) becomes uniform in the void layer G (see FIGS. 13 (a)-(c)). As a result, the liquid crystal pool of the dimming cell 120 is eliminated, the liquid crystal layer 123 of the dimming cell 120 can be uniformly distributed in the plane, and the quality and appearance of the dimming device 110 can be improved.

Further, according to the present embodiment, by providing the gap layer G between the dimming cell 120 and the film 133, the heat insulating property of the dimming device 110 is improved, and the vehicle in which the dimming device 110 is provided. It is possible to increase the heat retention inside the building.

Further, according to the present embodiment, the frame interlayer film 116 is formed so as to surround the dimming cell 120, and the frame intermediate film 116 connects the first intermediate film 113 and the second intermediate film 114. .. As a result, it is possible to suppress the intrusion of moisture and the like from the side surface of the dimmer 110 and further enhance the water impermeability of the dimmer 110.

(Modified example of the third embodiment)
Next, various modifications of the third embodiment will be described with reference to FIGS. 14 to 27. 14 to 27 are diagrams showing a dimming device according to a modified example of the present embodiment, respectively. In FIGS. 14 to 27, the same parts as those shown in FIGS. 7 to 13 are designated by the same reference numerals, and detailed description thereof will be omitted.

(First modification)
FIG. 14 shows a dimming device 110A according to the first modification. In the dimming device 110A shown in FIG. 14, a fluid resin layer L is provided between the dimming cell 120 and the film 133. The fluid resin layer L is enclosed in the space between the light control cell 120 and the film 133. The fluid resin layer L is, for example, a transparent resin that softens at a temperature lower than that of the first intermediate film 113 and the second intermediate film 114, and may be an uncured liquid or a gel. Further, it is preferable that the refractive index of the fluid resin layer L is adjusted to that of the film 133. As such a fluid resin layer L, for example, glycerin or the like can be used. Further, the fluid resin layer L may be a fluid liquid layer. The thickness of the fluid resin layer L may be larger than 0 μm and less than 10000 μm. By providing the fluidized resin layer L between the light control cell 120 and the film 133 in this way, the fluidized resin layer L can be made to flow after the laminated glass processing. As a result, the thickness of the liquid crystal layer 123 of the dimming cell 120 can be made uniform, and the occurrence of liquid crystal pools can be suppressed. In the examples shown in FIGS. 15 to 27, which will be described later, a fluid resin layer L may be provided between the light control cell 120 and the film 133 (or an additional film 133A) instead of the void layer G. ..

(Second modification)
FIG. 15 shows the dimming device 110B according to the second modification. In the dimming device 110B shown in FIG. 15, a plurality of spacers 134 are provided in the gap layer G between the dimming cell 120 and the film 133. As the spacer 134, a spherical bead spacer having the same configuration as the bead spacer 131 of the dimming cell 120 described above may be used. The plurality of spacers 134 may be arranged regularly in a plan view, or may be arranged irregularly. In this case, the diameter of the spacer 134 may be larger than 0 μm and may be in the range of 10000 μm or less, and is preferably in the range of 1 μm or more and 100 μm or less from the viewpoint of visibility. Alternatively, as the spacer 134, a columnar spacer may be used. By arranging the spacer 134 in the void layer G in this way, the thickness of the void layer G can be secured. As a result, the dimming cell 120 and the film 133 can be prevented from sticking to each other, and rainbow-shaped unevenness and liquid crystal accumulation can be suppressed in the liquid crystal layer 123. Further, the dimming cell 120 and the film 133 may be prevented from sticking to each other by roughening the surface of the film 133 instead of the spacer 134 or together with the spacer 134.

(Third variant)
FIG. 16 shows a dimming device 110C according to a third modification. In the dimming device 110C shown in FIG. 16, an additional film 133A is arranged between the dimming cell 120 and the second interlayer film 114. Further, a void layer G is provided between the light control cell 120 and the additional film 133A. As the additional film 133A, a film having the same configuration as that of the film 133 may be used. As described above, the void layers G are provided on both side surfaces (first intermediate film 113 side and second intermediate film 114 side) of the dimming cell 120, so that the liquid crystal layer 123 of the dimming cell 120 has fluidity. It is possible to more effectively suppress the formation of liquid crystal pools in the liquid crystal layer 123. Further, since there are films on both the first glass plate 111 side and the second glass plate 112 side with respect to the dimming cell 120, when the dimming cell 120 is in a light-shielding state, the first glass plate 111 side and the first 2 The same mirror surface is observed from either side of the glass plate 112.

(Fourth modification)
17 and 18 show a dimming device 110D according to a fourth modification. In the dimming device 110D shown in FIGS. 17 and 18, an extension portion 161 is formed by a part of the dimming cell 120 and a part of the film 133. The extension portion 161 projects outward from the dimming device 110D in the plane direction. Further, the extension portion 161 has a substantially rectangular shape in a plan view, and extends outward from the first glass plate 111 and the second glass plate 112. In this case, the extension portion 161 is formed by the first base material 124 of the dimming cell 120 and the film 133. That is, the first base material 124 of the dimming cell 120 has a projecting piece 124a projecting outward, and the film 133 has a projecting piece 133a projecting outward. The extension portion 161 is composed of a projecting piece 124a of the dimming cell 120 and a projecting piece 133a of the film 133. The projecting piece 124a of the first base material 124 and the projecting piece 133a of the film 133 forming the extension portion 161 have the same shape as each other. The present disclosure also provides a dimming cell 120 having such a protruding piece 124a.

In this modification, a communication hole (vent hole) 162 for communicating the gap layer G between the light control cell 120 and the film 133 and the outside air is provided. The communication hole 162 is formed inside the extension portion 161 and is specifically provided in the gap between the first base material 124 and the film 133 in the extension portion 161. In this case, even if air escapes from the void layer G between the light control cell 120 and the film 133 during the laminated glass processing, the void layer G is restored by injecting a gas such as air or nitrogen from the communication hole 162. Can be done. As a result, it is possible to prevent a liquid crystal pool from being generated in the liquid crystal layer 123 of the dimming cell 120. After the void layer G is restored between the light control cell 120 and the film 133, the communication holes 162 may be sealed with an adhesive, a liquid interlayer film, or the like. The extension portion 161 is formed of the first base material 124 and the film 133, and the second base material 127 does not exist at the extension portion 161. As a result, the communication hole 162 can be made thin, the air passage is widened, and the liquid crystal pool is easily improved. However, not limited to this, the extension portion 161 may be formed by the second base material 127, the first base material 124, and the film 133. The place where the extension portion 161 (extension portion 161) is provided is not limited, but in order to suppress the occurrence of wrinkles and the like, it is preferable to provide the extension portion 161 other than the vicinity of the corner portion of the dimming cell 120.

Further, the width W2 (FIG. 18) of the extension portion 161 is preferably 5 mm or more and 40 mm or less, and more preferably 10 mm or more and 20 mm or less. By setting the above range, the width W2 of the extension portion 161 can be suppressed to be narrow, and liquid crystal accumulation due to distortion of the communication hole 162 can be prevented from occurring. Further, in this modification, it is desirable to reduce the width W3 (FIGS. 17 and 18) of the frame intermediate film 116 at least in the portion where the communication hole 162 is formed. Specifically, it is preferable that the width W3 of the frame interlayer film 116 is about 0 mm or more and 10 mm or less. As a result, it is possible to secure a wide air passage through the communication hole 162, and it is possible to easily improve the liquid crystal pool. When the fluidized resin layer L (FIG. 14) is sealed between the light control cell 120 and the film 133, the fluidized resin layer L may be injected through the communication hole 162. Further, when a plurality of spacers 134 are provided in the gap layer G between the light control cell 120 and the film 133 (FIG. 15), it is preferable to provide the spacers 134 in the extension portion 161 as well. The communication hole 162 may be any one capable of communicating the gap layer G between the light control cell 120 and the film 133 and the outside air with each other. For example, the extension portion 161 may be formed over the entire side of the first base material 124 (second base material 127) and the film 133 of the dimming cell 120.

(Fifth variant)
FIG. 19 shows a dimming device 110E according to a fifth modification. In the dimming device 110E shown in FIG. 19, the extension portion 161 is formed by a part of the dimming cell 120 and a part of the film 133, as in the fourth modification (FIGS. 17 and 18). .. The extension portion 161 projects outward from the dimming device 110E in the plane direction. Further, a communication hole (vent hole) 162 for communicating the gap layer G between the light control cell 120 and the film 133 and the outside air is provided. In this modification, the frame interlayer film 116 is a plan view in which one of the four sides of the first base material 124 (second base material 127) of the dimming cell 120 and the film 133, which is provided with the communication hole 162, is missing. It has a U-shape. As described above, since the frame interlayer film 116 does not exist on one side where the communication hole 162 is provided, it is possible to easily inject a gas such as air or nitrogen from the communication hole 162. In addition to the U-shape, the planar shape of the frame interlayer 116 is, for example, (i) a frame shape in which only the portion provided with the communication hole 162 is missing, and (ii) a shape having only two opposite sides (“=”). Shape), (iii) Dot-shaped shapes provided only at the four corners, (iv) L-shaped shapes provided only at the four corners, (v) Provided only at the two diagonal corners The shape may be (vi) a shape excluding only the four corners. Other configurations are substantially the same as those of the fourth modification shown in FIGS. 17 and 18.

(Sixth variant)
20 and 21 show a dimming device 110F according to a sixth modification. In the dimming device 110F shown in FIGS. 20 and 21, a communication tube 163 is arranged between the dimming cell 120 and the film 133. The communication pipe 163 projects outward from the dimming device 110F in the plane direction. That is, the communication pipe 163 has an elongated pipe shape and extends outward from the first glass plate 111 and the second glass plate 112. In this case, the communication tube 163 is sandwiched between the first base material 124 of the dimming cell 120 and the film 133. Further, in this modification, a communication hole (vent hole) 162A for communicating the gap layer G between the light control cell 120 and the film 133 and the outside air is provided. The communication hole 162A is formed at the radial center of the communication pipe 163. In this case, even if air escapes from the gap layer G between the light control cell 120 and the film 133 during the laminated glass processing, air can be injected from the communication hole 162A to restore the gap layer G. As a result, it is possible to prevent a liquid crystal pool from being generated in the liquid crystal layer 123 of the dimming cell 120. Further, when the fluid resin layer L (FIG. 14) is sealed between the light control cell 120 and the film 133, the fluid resin layer L may be injected through the communication hole 162A.

(7th variant)
FIG. 22 shows the dimming device 110G according to the seventh modification. In the dimming device 110G shown in FIG. 22, a plurality of (two) extension portions 161A and 161B are formed by a part of the dimming cell 120 and a part of the film 133. The two extension portions 161A and 161B each project from the dimming device 110G toward the outside in the plane direction. That is, each of the extension portions 161A and 161B has a substantially rectangular shape in a plan view, and extends outward from the first glass plate 111 and the second glass plate 112. The two extension portions 161A and 161B are located on the same side of the dimmer 110G, but the present invention is not limited to this, and the two extension portions 161A and 161B may be located on different sides. In this case, the extension portions 161A and 161B are formed by the projecting piece 124a of the first base material 124 and the projecting piece 133a of the film 133, respectively. In this modification, communication holes (vent holes) 162B and 162C for communicating the gap layer G between the light control cell 120 and the film 133 and the outside air are provided. The communication holes 162B and 162C are formed in the extension portions 161A and 161B, respectively, and are specifically provided in the gap between the first base material 124 and the film 133 in the extension portions 161A and 161B. In this way, when a plurality of (two) extension portions 161A and 161B are provided to enclose the fluid resin layer L between the dimming cell 120 and the film 133 from one extension portion 161A (161B). Vacuum can be drawn from the other extension portion 161B (161A), and the fluid resin layer L can be smoothly sealed. In addition, the configurations of the extension portions 161A and 161B are substantially the same as the configurations of the extension portions 161 shown in FIGS. 17 and 18.

(8th variant)
FIG. 23 shows the dimming device 110H according to the eighth modification. In the dimming device 110H shown in FIG. 23, an additional film 133A is arranged between the dimming cell 120 and the second interlayer film 114. A void layer G is provided between the dimming cell 120 and the additional film 133A. Further, the extension portion 161C is formed by a part of the dimming cell 120 and a part of the film 133. Each of the extension portions 161C projects outward from the dimming device 110H in the plane direction. That is, the extension portion 161C has a substantially rectangular shape in a plan view, and extends outward from the first glass plate 111 and the second glass plate 112. In this case, the extension portion 161C is formed by the protruding piece 124a of the first base material 124, the protruding piece 127a of the second base material 127, the protruding piece 133a of the film 133, and the protruding piece 133b of the additional film 133A. In this modification, a communication hole (vent hole) 162D for communicating the gap layer G between the light control cell 120 and the film 133 and the outside air is provided. The communication hole 162D is provided in the gap between the first base material 124 and the film 133 in the extension portion 161C. Further, a communication hole (vent hole) 162E for communicating the void layer G between the light control cell 120 and the additional film 133A and the outside air is provided. The communication hole 162E is provided in the gap between the first base material 124 and the additional film 133A in the extension portion 161C. In addition, the configuration of the extension portion 161C is substantially the same as the configuration of the extension portion 161 shown in FIGS. 17 and 18.

(9th variant)
FIG. 24 shows the dimming device 110I according to the ninth modification. In the dimming device 110I shown in FIG. 24, an additional film 133A is arranged between the dimming cell 120 and the second interlayer film 114. A void layer G is provided between the light control cell 120 and the additional film 133A. Further, a plurality of (two) extension portions 161D and 161E are formed by a part of the dimming cell 120 and a part of the film 133. The two extension portions 161D and 161E project outward from the dimming device 110I in the plane direction, respectively. That is, each of the extension portions 161D and 161E has a substantially rectangular shape in a plan view, and extends outward from the first glass plate 111 and the second glass plate 112. In this case, one extension portion 161D is formed by the projecting piece 124a of the first base material 124 and the projecting piece 133a of the film 133. Further, a communication hole (vent hole) 162F for communicating the gap layer G between the light control cell 120 and the film 133 and the outside air is provided. The communication hole 162F is formed in one of the extension portions 161D, and specifically, is provided in the gap between the first base material 124 and the film 133 in the extension portion 161D. The other extension portion 161E is formed by a protruding piece 127a of the second base material 127 and a protruding piece 133b of the additional film 133A. Further, a communication hole (vent hole) 162G for communicating the void layer G between the light control cell 120 and the additional film 133A and the outside air is provided. The communication hole 162G is formed in the other extension portion 161E, and specifically, is provided in the gap between the second base material 127 and the additional film 133A in the other extension portion 161E. In addition, the configurations of the extension portions 161D and 161E are substantially the same as the configurations of the extension portions 161 shown in FIGS. 17 and 18.

(10th variant)
FIG. 25 shows a dimming device 110J according to a tenth modification. In the dimming device 110J shown in FIG. 25, the peripheral edge of the dimming cell 120 and the peripheral edge of the film 133 are adhered to each other by the sealing material 164. The sealing material 164 is provided along the peripheral edge of the void layer G. As the sealing material 164, the same material as the sealing material 132 of the dimming cell 120 described above can be used, and in addition to the same material as the sealing material 132, thermosetting resins such as epoxy resin and acrylic resin and ultraviolet curing can be used. A sex resin or the like can be applied. The width W4 of the sealing material 164 may be 0.1 mm or more and 50 mm or less. The sealing material 164 is applied along the peripheral edge of the first base material 124 of the light control cell 120, and after laminating the light control cell 120 and the film 133, it is formed by being cured by, for example, ultraviolet rays (UV) and heat. To. The sealing material 164 may be formed at the same time as the sealing material 132 of the dimming cell 120. Further, the sealing material 164 is provided on the entire peripheral edge of the dimming cell 120 and the film 133, but is not limited to this, and may be provided only on a part of the peripheral edge of the dimming cell 120 and the film 133. By integrating the dimming cell 120 and the film 133 in this way, the rigidity of the dimming cell 120 and the film 133 can be increased, and the occurrence of wrinkles and the occurrence of liquid crystal pools can be suppressed. Further, since the void layer G between the light control cell 120 and the film 133 does not come into direct contact with the frame interlayer film 116, deterioration of the frame intermediate film 116 due to air or the like is suppressed. Further, since the dimming cell 120 and the film 133 are integrated, the step of laminating them can be simplified. Further, in FIG. 25, since the distance between the dimming cell 120 and the film 133 can be adjusted by the sealing material 164, the light reflected on the surface of the dimming cell 120 and the light reflected on the surface of the film 133 interfere with each other. , It is possible to prevent the occurrence of rainbow unevenness. In this case, a spacer (for example, the same as the bead spacer 131 described above) may be mixed in the sealing material 164 to adjust the distance between the dimming cell 120 and the film 133. In the present disclosure, the dimming cell 120 and the film 133 adhered to the dimming cell 120 by the sealing material 164 are provided, and a gap layer G is provided between the dimming cell 120 and the film 133. A laminated body 160 for an apparatus is also provided.

(11th variant)
FIG. 26 shows a dimming device 110K according to the eleventh modification. In the dimming device 110K shown in FIG. 26, an extension portion 161 is formed by a part of the dimming cell 120 and a part of the film 133. Further, the peripheral edge of the light control cell 120 and the peripheral edge of the film 133 are adhered to each other by the sealing material 164. Further, in the extension portion 161, the first base material 124 of the dimming cell 120 and the film 133 are adhered to each other by the sealing material 164. The sealing material 164 is also formed on both end edges in the width direction of the extension portion 161. The sealing material 164 is not provided at the base end portion of the extension portion 161 so that the communication between the communication hole 162 and the void layer G is not hindered. In this modification, when the fluidized resin layer L is sealed in the space between the extension portion 161 and the dimming cell 120 and the film 133, the tip of the extension portion 161 is fluidized with this space as a negative pressure. By immersing in the container containing the resin layer L, the fluid resin layer L can be smoothly sealed in the space. Therefore, it is not necessary to immerse the entire side of the light control cell 120 in the container containing the fluid resin layer L.

(12th variant)
FIG. 27 shows the dimming device 110L according to the twelfth modification. In the dimming device 110L shown in FIG. 27, an extension portion 161 is formed by a part of the dimming cell 120 and a part of the film 133. Further, the two opposite sides of the dimming cell 120 and the film 133 are adhered to each other by the sealing material 164, respectively. Specifically, of the four sides of the dimming cell 120 and the film 133, the side on which the extension portion 161 is formed and the side facing the side on which the extension portion 161 is formed are adhered to each other by the sealing material 164. There is. Further, in the extension portion 161, the first base material 124 of the light control cell 120 and the film 133 are adhered to each other by the sealing material 164. The sealing material 164 is also formed on both end edges in the width direction of the extension portion 161. Other configurations are substantially the same as the configurations shown in FIG. 25.

It is also possible to appropriately combine a plurality of components disclosed in the above-described embodiments and modifications as necessary. Alternatively, some components may be removed from all the components shown in the above embodiments and modifications.

Claims (1)

The first glass plate and
A second glass plate arranged to face the first glass plate and
A dimming film provided between the first glass plate and the second glass plate,
A buffer laminated on the surface of the light control film on the second glass plate side, and
A first interlayer film provided between the first glass plate and the light control film, and
A second interlayer film provided between the second glass plate and the buffer is provided.
A laminated glass in which a space is formed between the buffer and the light control film.

Images