Lighting control member and clad plate

Abstract

To prevent a deterioration in the appearance of a lighting control member due to the uneven distribution of liquid crystal molecules.SOLUTION: A lighting control member 20 comprises: a first member 30 including a first substrate 31; a second member 40 including a second substrate 41 facing the first substrate 31; a liquid crystal layer 50 arranged between the first member 30 and the second member 40; and a spacer 60 located between the first member 30 and the second member 40. A resin layer 80 is provided on at least one of the first member 30 and the second member 40.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present disclosure relates to a light control member and a laminate. [Background technology]

[0002] A light-adjusting component capable of adjusting visible light transmittance is known, as shown in Patent Document 1. The light-adjusting component shown in Patent Document 1 has, for example, a liquid crystal layer containing liquid crystal molecules. A light-adjusting component having a liquid crystal layer can change its visible light transmittance by applying a voltage. A light-adjusting component having a liquid crystal layer has the advantage that its visible light transmittance changes quickly. A light-adjusting component is used, for example, in the transparent portion of a partition member such as a window.

[0003] The liquid crystal layer is disposed between a pair of plate-like members having a base material. Bead spacers are further disposed between the pair of plate-like members. The bead spacers are in contact with the pair of plate-like members. The bead spacers maintain an appropriate thickness of the liquid crystal layer. The bead spacers suppress the movement of liquid crystal molecules in the liquid crystal layer. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2018-5040 A Summary of the Invention [Problem to be solved by the invention]

[0005] When a light-adjusting component is exposed to high temperatures, the liquid crystal layer expands due to the heat. This causes the gap between the bead spacers and the plate-like component to widen. This can cause liquid crystal molecules to move in the liquid crystal layer between the bead spacers and the plate-like component. If a light-adjusting component having a liquid crystal layer is positioned at an angle to the horizontal, gravity can cause the liquid crystal molecules to move in the liquid crystal layer and cause the liquid crystal molecules to become unevenly distributed on the lower side in the vertical direction. The unevenly distributed liquid crystal molecules are clearly visible from the outside of the light-adjusting component, which can damage the appearance of the light-adjusting component.

[0006] The present disclosure aims to prevent deterioration of the appearance of a light control component due to uneven distribution of liquid crystal molecules. [Means for solving the problem]

[0007] An embodiment of the present disclosure relates to the following [1] to

[18] .

[0008] [1] A light control component comprising: a first component including a first substrate; a second component including a second substrate facing the first substrate; a liquid crystal layer disposed between the first component and the second component; and a spacer disposed between the first component and the second component, wherein a resin layer is provided on at least one of the first component and the second component.

[0009] [2] The dimming element described in [1], wherein the thickness of the resin layer in at least a portion of the area where the spacer and the resin layer overlap in a planar view is thinner than the thickness of the resin layer in the area where the spacer and the resin layer do not overlap in a planar view.

[0010] [3] A dimming component according to [1] or [2], which, when exposed to an environment at a temperature of 100°C ± 5°C for one hour or more, maintains a state in which the thickness of the resin layer in at least a part of the area where the spacer and the resin layer overlap in a planar view is equal to or less than the thickness of the resin layer in the area where the spacer and the resin layer do not overlap in a planar view.

[0011] [4] The light-controlling component according to any one of [1] to [3], wherein when a load is applied to the resin layer at a rate of 0.29 mN / s using a 50 μm square flat indenter, the load required to displace the resin layer by 2 μm is 5.2 mN or less.

[0012] [5] The light control component according to any one of [1] to [4], wherein the resin layer has a thickness of 0.5 μm or more and 10 μm or less.

[0013] [6] The light control component according to any one of [1] to [5], wherein the resin layer is formed by laminating a plurality of layers.

[0014] [7] The light control component according to any one of [1] to [6], wherein another resin layer or an alignment film is provided on a component located on the opposite side of the resin layer.

[0015] [8] The light control component according to any one of [1] to [7], wherein the material of the resin layer is dipentaerythritol hexaacrylate (DPHA) or urethane acrylate.

[0016] [9] A laminate comprising a first substrate and a second substrate facing each other, and a dimming element described in any one of [1] to [8] arranged between the first substrate and the second substrate.

[0017]

[10] The laminate described in [9], further comprising a first bonding layer that bonds the first substrate and the dimming member to each other, and a second bonding layer that bonds the second substrate and the dimming member to each other.

[0018]

[11] The laminate according to

[10] , wherein the thickness of the first bonding layer and the second bonding layer is uniform within the plane.

[0019]

[12] The laminate described in

[10] or

[11] , wherein the first bonding layer and the second bonding layer are connected to each other by an insert material.

[0020]

[13] The laminated board according to

[12] , wherein the material of the insert is polyethylene terephthalate, polycarbonate or OCR.

[0021]

[14] A laminate according to

[10] or

[11] , in which a peripheral fixing member is provided on the outer periphery of the first substrate, the first bonding layer, the dimming member, the second bonding layer and the second substrate.

[0022]

[15] The laminate described in any one of

[10] to

[14] , wherein a gap layer is provided between the first bonding layer and the light control member.

[0023]

[16] The laminate according to

[15] , wherein an anti-reflection layer is provided at a position facing the air gap layer.

[0024]

[17] The laminate according to

[16] , wherein the first substrate is colored glass.

[0025]

[18] The laminate according to

[15] , wherein the first substrate has an anti-reflection function. [Effects of the Invention]

[0026] According to the present disclosure, it is possible to prevent deterioration of the appearance of the light control component due to uneven distribution of liquid crystal molecules. [Brief explanation of the drawings]

[0027] [Figure 1] FIG. 1 is a perspective view of a moving body having a light adjusting member. [Figure 2] FIG. 2 is a plan view showing a state in which the visible light transmittance of the light adjusting member is adjusted to be high. [Figure 3] FIG. 3 is a plan view showing a state in which the visible light transmittance of the light adjusting member is adjusted to be low. [Figure 4A] 4A is a cross-sectional view of the light control member taken along line IV-IV in FIG. [Figure 4B] FIG. 4B is a cross-sectional view of a light adjusting member according to a modified example. [Figure 5] FIG. 5 is a diagram showing the state in which the load required to displace the resin layer by 2 μm is measured when a load is applied to the resin layer at a rate of 0.29 mN / s using a 50 μm square flat indenter. [Figure 6] FIG. 6 is an enlarged cross-sectional view showing the area between the first member and the second member of the light adjusting member at room temperature. [Figure 7] FIG. 7 is an enlarged cross-sectional view showing the area between the first member and the second member of the light adjusting member in a state heated to a high temperature. [Figure 8] FIG. 8 is a diagram illustrating an example of a method for manufacturing a light adjusting member. [Figure 9] FIG. 9 is a diagram illustrating an example of a method for manufacturing a light adjusting member. [Figure 10] FIG. 10 is a diagram illustrating an example of a method for manufacturing a light adjusting member. [Figure 11] FIG. 11 is a diagram for explaining an example of a method for manufacturing a light adjusting member. [Figure 12] FIG. 12 is a diagram for explaining an example of a method for manufacturing a light adjusting member. [Figure 13] FIG. 13(A) is a diagram showing a state in which the dimming component is arranged at an incline relative to the horizontal direction at room temperature, and FIG. 13(B) is a diagram showing a state in which the dimming component is arranged at an incline relative to the horizontal direction at a high temperature. [Figure 14] FIG. 14(A) is a diagram showing a state in which the liquid crystal is uniformly filled, and FIG. 14(B) is a diagram showing a state in which the liquid crystal is not partially filled. [Figure 15] FIG. 15 is a cross-sectional view showing a cladding plate according to a first modified example. [Figure 16] FIG. 16 is a cross-sectional view showing a cladding plate according to a second modified example. [Figure 17] FIG. 17 is a cross-sectional view showing a cladding plate according to a third modified example. [Figure 18] FIG. 18 is a cross-sectional view showing a cladding plate according to a fourth modified example. [Figure 19] FIG. 19 is a cross-sectional view showing another example of the cladding plate according to the fourth modified example. [Figure 20] FIG. 20 is a cross-sectional view showing a cladding plate according to a fifth modified example. [Figure 21] FIG. 21 is a cross-sectional view showing another example of the cladding plate according to the fifth modified example. [Figure 22] FIG. 22 is a cross-sectional view showing another example of the cladding plate according to the fifth modified example. [Figure 23] FIG. 23 is a cross-sectional view showing a cladding plate according to a sixth modified example. [Figure 24] FIG. 24 is a cross-sectional view showing another example of the cladding plate according to the sixth modified example. [Figure 25] FIG. 25 is a cross-sectional view showing another example of the cladding plate according to the sixth modified example. [Figure 26] FIG. 26 is a cross-sectional view showing a cladding plate according to a seventh modified example. [Figure 27] FIG. 27 is a cross-sectional view showing another example of the cladding plate according to the seventh modified example. DETAILED DESCRIPTION OF THE INVENTION

[0028] The light control component according to the present embodiment includes a first member including a first substrate, a second member including a second substrate facing the first substrate, a liquid crystal layer disposed between the first member and the second member, and a spacer disposed between the first member and the second member. A resin layer is provided on at least one of the first member and the second member.

[0029] Generally, a light control component may be exposed to high temperatures for a long period of time. For example, if the light control component is installed inside a vehicle, the temperature inside the vehicle may rise due to sunlight or other factors, exposing the light control component to high temperatures for a long period of time. When the temperature of the light control component rises, the liquid crystal layer expands due to heat. According to this embodiment, a resin layer is provided on at least one of the first and second components. This allows the resin layer to follow the expansion of the liquid crystal layer even when the liquid crystal layer thermally expands during a transition from a room temperature state to a high temperature state. At this time, the spacer remains in contact with the resin layer and the second component. Therefore, even when the light control component is disposed at an angle relative to the horizontal direction, the liquid crystal molecules are prevented from moving in the liquid crystal layer due to gravity. As a result, deterioration of the appearance of the light control component due to uneven distribution of liquid crystal molecules in the liquid crystal layer between the spacer and the first and second components can be suppressed.

[0030] An embodiment of the present disclosure will be described below with reference to the drawings. In the drawings attached to this specification, the scale and aspect ratios have been appropriately changed and exaggerated from those of the actual objects for the sake of convenience in illustration and understanding. Configurations shown in some drawings may be omitted in other drawings.

[0031] In this specification, terms such as "parallel," "orthogonal," and "identical," which specify shapes and geometric conditions and their degrees, as well as values ​​of lengths and angles, are not limited to their strict meanings but are interpreted to include a range of degrees within which similar functions can be expected.

[0032] In this specification, the normal direction of a plate-like member refers to the normal direction to the plate surface of the target plate-like member. Also, the "plate surface" refers to the surface that coincides with the target plate-like member when the target plate-like member is viewed overall and globally. The same applies when "plate" is read as "film" or "sheet," etc.

[0033] In this specification, when multiple upper limit value candidates and multiple lower limit value candidates are listed for a parameter, the parameter may be a numerical range that combines any one upper limit value candidate and any one lower limit value candidate.

[0034] FIG. 1 is a perspective view of a moving body 1 including a laminated plate 10 according to one embodiment. The laminated plate 10 can be used, for example, as a component for dividing a space. The laminated plate 10 is used as a transparent portion of a partition component, such as a window or windshield device for a moving body such as an automobile, train, ship, or airplane, or a window in the exterior or interior wall or door of a building, or a part of a partition. In the example shown in FIG. 1, the laminated plate 10 is used as a sun visor for an automobile. The laminated plate 10 may have any shape suitable for the component to which it is applied. The laminated plate 10 includes a light-controlling component 20 capable of adjusting visible light transmittance. By adjusting the visible light transmittance with the light-controlling component 20, the sun visor controls sunlight and other light entering the interior of the automobile, providing the automobile occupants with good visibility. Without being limited to the illustrated example, the laminated plate 10 may also be used in a side window, rear window, side mirror, or the like of the moving body 1. Without being limited to the illustrated example, the moving body 1 may be a ship, a railroad vehicle, an airplane, or the like.

[0035] FIG. 2 is a plan view of the light control component 20 and the laminate 10 when the visible light transmittance is adjusted to a high level. FIG. 3 is a plan view of the light control component 20 and the laminate 10 when the visible light transmittance is adjusted to a low level. The plan view of the laminate 10 and the light control component 20 refers to a plan view of the laminate 10 and the light control component 20. The plan view of the laminate 10 and the light control component 20 refers to a view of the laminate 10 and the light control component 20 from the normal direction of their plate surfaces. FIG. 4A is a cross-sectional view of the laminate 10 and the light control component 20 taken along line IV-IV in FIG. 2. As shown in FIG. 4A, the laminate 10 includes a first substrate 11 and a second substrate 12, a first bonding layer 13 and a second bonding layer 14, and the light control component 20. The first substrate 11 and the second substrate 12 face each other. The plate surface of the first substrate 11 faces the plate surface of the second substrate 12. The light control member 20 is disposed between the first substrate 11 and the second substrate 12. The first bonding layer 13 is disposed between the first substrate 11 and the light control member 20. The second bonding layer 14 is disposed between the second substrate 12 and the light control member 20.

[0036] The first substrate 11 and the second substrate 12 preferably have high visible light transmittance so that the visible light transmittance of the laminated plate 10 can be increased when the visible light transmittance of the light control component 20 is adjusted to be high. The visible light transmittance of the first substrate 11 and the second substrate 12 may be 20% or more, 45% or more, 80% or more, or 85% or more. The material of the first substrate 11 and the second substrate 12 may be soda-lime glass. The thickness of the first substrate 11 and the second substrate 12 may be 1 mm or more, 2 mm or more, 3 mm or more, 3.5 mm or more, 10 mm or less, 8 mm or less, or 5 mm or less. The first substrate 11 and the second substrate 12 having such thicknesses have excellent strength and optical properties. The first substrate 11 and the second substrate 12 may be made of the same material or may differ from each other in at least one of their material and structure.

[0037] In this specification, visible light transmittance is specified as the average value of the total light transmittance at each wavelength when measured in 1 nm increments within a wavelength range of 380 nm to 780 nm using a spectrophotometer (Shimadzu Corporation's "UV-3600i Plus," compliant with JIS K0115). The angle of incidence when measuring visible light transmittance is set to 0° unless a specific transmission direction is specified. The angle of incidence is the angle between the normal to the incident surface and the propagation direction of the incident light, and is a value less than 90°.

[0038] The first substrate 11 and the second substrate 12 each have a flat, two-dimensional surface shape. However, the first substrate 11 and the second substrate 12 may each have a three-dimensional surface shape with a curved surface. The first substrate 11 and the second substrate 12 may each be pre-formed to have a curved surface that is convex on one side. In this case, the first substrate 11 and the second substrate 12 may be formed so that the first substrate 11 side is convex relative to the second substrate 12 side, or so that the second substrate 12 side is convex relative to the first substrate 11 side. The first substrate 11 and the second substrate 12 may be made of inorganic glass or resin glass. Examples of resin glass include polycarbonate and acrylic. Using inorganic glass for the first substrate 11 and the second substrate 12 results in a laminated board 10 with excellent heat resistance and scratch resistance. On the other hand, using resin glass for the first substrate 11 and the second substrate 12 can reduce the weight of the laminated board 10. Furthermore, the first substrate 11 and the second substrate 12 may be subjected to surface treatment such as hard coating, if necessary.

[0039] The first bonding layer 13 bonds the first substrate 11 and the light control component 20 together. The second bonding layer 14 bonds the second substrate 12 and the light control component 20 together. The first bonding layer 13 and the second bonding layer 14 preferably have high visible light transmittance so that the visible light transmittance of the laminate 10 can be high when the visible light transmittance of the light control component 20 is adjusted to be high. The first bonding layer 13 and the second bonding layer 14 may have a visible light transmittance of 90% or more. The first bonding layer 13 and the second bonding layer 14 may be made of a material having various adhesive or cohesive properties. The first bonding layer 13 and the second bonding layer 14 may be made of polyvinyl butyral, ethylene-vinyl acetate copolymer, cycloolefin polymer, ionomer, OCA (Optically Clear Adhesive), OCR (Optically Clear Resin), a combination of OCA and OCR, or a combination of polyvinyl butyral and OCR. The thickness of first bonding layer 13 and second bonding layer 14 may be 0.15 mm or more, or 1 mm or less. First bonding layer 13 and second bonding layer 14 may be made of the same material and configured identically, or may be different from each other in at least one of the material and the configuration.

[0040] The light adjusting member 20 is capable of adjusting the visible light transmittance. The visible light transmittance that the light adjusting member 20 can assume may be 0.5% or more, 1% or more, 10% or more, 20% or more, 75% or less, 70% or less, 45% or less, or 40% or less. The light adjusting member 20 is a plate-shaped member. The thickness of the light adjusting member 20 may be 0.1 mm or more, or 0.5 mm or less.

[0041] 2 to 4A, the light control member 20 includes a first member 30, a second member 40, a liquid crystal layer 50, and a sealing material 55. The liquid crystal layer 50 is disposed between the first member 30 and the second member 40. The sealing material 55 circumferentially surrounds the liquid crystal layer 50. As shown in FIG. 4A, the light control member 20 further includes a spacer 60 and a resin layer 80. The light control member 20 may include other members (not shown) that are intended to perform specific functions.

[0042] The resin layer 80 is a flexible layer and serves to follow the thermal expansion of the liquid crystal layer 50 during use. The resin layer 80 is more flexible than the spacer 60. The resin layer 80 may also be referred to as a flexible layer. The resin layer 80 may have an alignment function that regulates the orientation of liquid crystal molecules in the liquid crystal layer 50, as described below. The resin layer 80 is located on at least one of the first member 30 and the second member 40. In FIG. 4A , the resin layer 80 is located on the first member 30. However, the resin layer 80 may also be located on the second member 40. The resin layer 80 may also be located on both the first member 30 and the second member 40. In this case, the resin layer 80 located on the first member 30 and the resin layer 80 located on the second member 40 may all be identical in thickness, material, and hardness, or may differ in some or all of the thickness, material, and hardness.

[0043] The resin layer 80 is provided in a position where it contacts the spacer 60. The resin layer 80 is in contact with the portion of the spacer 60 on the first member 30 side. A portion of the spacer 60 may be buried in the resin layer 80. The resin layer 80 is in contact with the liquid crystal layer 50. That is, the liquid crystal layer 50 is provided on the resin layer 80. The resin layer 80 may be provided over the entire area where the liquid crystal layer 50 is present. The sealant 55 is located on the resin layer 80. However, it is not limited to this, and the resin layer 80 may be located inside the sealant 55. The resin layer 80 may be provided over the entire inside of the sealant 55.

[0044] The resin layer 80 is thin. The thickness t2 of the resin layer 80 is at least greater than the increase in thickness of the liquid crystal layer 50 when exposed to an environment at a temperature of 100°C ± 5°C for at least one hour. At room temperature, the thickness t2 of the resin layer 80 may be 0.5 μm or greater, 1 μm or greater, or 2 μm or greater. At room temperature, the thickness t2 of the resin layer 80 may be 10 μm or less, 8 μm or less, or 7 μm or less. The thickness t2 of the resin layer 80 refers to the thickness of the resin layer 80 at a portion not in contact with the spacer 60. If the thickness of the resin layer 80 varies in-plane, the thickness of the resin layer 80 is defined as the thickness of the thickest portion of the resin layer 80.

[0045] As described above, the resin layer 80 is flexible. Specifically, when a load is applied to the resin layer 80 using a 50 μm square flat indenter at a rate of 0.29 mN / s, the load required to displace the resin layer 80 by 2 μm may be 5.2 mN or less, or 2.2 mN or less. The lower limit of the load is not limited, but may be greater than 0 mN or greater than 0.4 mN. Specifically, the load is measured as follows. As shown in FIG. 5 , a film 92 is laminated on a glass substrate 91. A polyethylene terephthalate (PET) film having a thickness of 125 μm is used as the film 92. The resin layer 80 to be measured is laminated on the film 92. A spacer 60 is placed on the resin layer 80. The spacer 60 is made of an acrylic resin with a particle size of 12 μm. Next, a load is applied to the spacer 60 using a 50 μm square flat indenter 93 at a rate of 0.29 mN / s, and the load is measured when the flat indenter 93 displaces 2 μm.

[0046] The main material of the resin layer 80 is not particularly limited as long as it is a flexible resin, and general resins such as thermoplastic resin, thermosetting resin, and ultraviolet curing resin can be used. As an example, dipentaerythritol hexaacrylate (DPHA) or urethane acrylate may be used as the main material of the resin layer 80. In this specification, the term "main material" refers to a material that is contained in a certain member at more than 50% by mass, preferably more than 80% by mass.

[0047] The resin layer 80 may be formed by laminating multiple layers. For example, the resin layer 80 may include a first layer located on the first member 30 side and a second layer located on the liquid crystal layer 50 side. The first layer may be a layer that enhances adhesion to the first member 30. The second layer is a flexible resin layer. The main material of the second layer is not particularly limited as long as it is a flexible resin, and general resins such as thermoplastic resin, thermosetting resin, and ultraviolet curing resin can be used. As an example, the main material of the second layer may be dipentaerythritol hexaacrylate (DPHA) or urethane acrylate.

[0048] The first member 30 and the second member 40 are plate-shaped. The first member 30 and the second member 40 are arranged so that their plate surfaces face each other. The first member 30 and the second member 40 sandwich a liquid crystal layer 50 therebetween. The first member 30 includes a first substrate 31 and a first electrode 33, in this order. The second member 40 includes a second substrate 41 and a second electrode 43, in this order. The second substrate 41 faces the first substrate 31. In the illustrated example, the resin layer 80 and the second electrode 43 of the second member 40 face each other.

[0049] The first substrate 31 supports the first electrode 33 and the resin layer 80. The second substrate 41 supports the second electrode 43. The first substrate 31 and the second substrate 41 are thin plate-shaped. The first substrate 31 and the second substrate 41 are transparent. The thickness of the first substrate 31 and the second substrate 41 may be 30 μm or more and 250 μm or less. The first substrate 31 and the second substrate 41 with such a thickness have excellent strength and optical properties. The material of the first substrate 31 and the second substrate 41 may be glass, an acetyl cellulose-based resin such as triacetyl cellulose (TAC), a polyester-based resin such as polyethylene terephthalate (PET) or polyethylene naphthalate (PEN), a polyolefin-based resin such as polyethylene (PE), polypropylene (PP), polystyrene, polymethylpentene, or EVA, a vinyl-based resin such as polyvinyl chloride or polyvinylidene chloride, an acrylic resin, a polyurethane-based resin, polysulfone (PSF), polyethersulfone (PES), polycarbonate (PC), polyether, polyetherketone (PEK), (meth)acrylonitrile, cycloolefin polymer (COP), or cycloolefin copolymer, with resins such as polycarbonate and polyethylene terephthalate being particularly preferred.

[0050] Transparent means that the visible light transmittance is 40% or more, 70% or more, or 80% or more.

[0051] The first electrode 33 and the second electrode 43 are spaced apart from each other. The first electrode 33 extends along the first substrate 31. The second electrode 43 extends along the second substrate 41. The first electrode 33 and the second electrode 43 are not directly electrically connected in the light control component 20. A voltage is applied to the first electrode 33 and the second electrode 43 via wiring (not shown). The visible light transmittance of the light control component 20 can be adjusted by changing the voltage applied to the first electrode 33 and the second electrode 43. The first electrode 33 and the second electrode 43 are transparent. The first electrode 33 and the second electrode 43 may be a transparent conductive film made of indium tin oxide (ITO), a copper mesh, carbon nanotubes, or silver nanowires.

[0052] As shown in FIG. 4B , the second member 40 may have an alignment film 45. The alignment film 45 regulates the orientation of liquid crystal molecules in the liquid crystal layer 50. The alignment film 45 is thin. The thickness of the alignment film 45 may be 10 nm or more, 45 nm or more, 1000 nm or less, or 150 nm or less. The alignment film 45 may be formed by rubbing a resin layer such as polyimide, or by a photoalignment method in which linearly polarized ultraviolet light is irradiated onto a polymer film to selectively react polymer chains in the polarization direction. Alternatively, the alignment film 45 may be formed by rubbing a fine linear concave-convex shape and then subjecting it to a molding process. The alignment film 45 may also be formed by other methods. The alignment film 45 may also be formed without a rubbing process. In this embodiment, the first member 30 does not have an alignment film, but the resin layer 80 may have substantially the same alignment function as an alignment film. Alternatively, the first member 30 may have a separate alignment film having substantially the same function as the alignment film 45. Alternatively, another resin layer may be provided in place of the alignment film 45 of the second member 40. The other resin layer may have the same configuration as the resin layer 80 described above. The other resin layer may have substantially the same alignment function as the alignment film.

[0053] Referring again to FIG. 4A , the liquid crystal layer 50 includes a plurality of liquid crystal molecules. An electric field is generated in the liquid crystal layer 50 by applying a voltage to the first electrode 33 and the second electrode 43. The electric field changes the orientation of the liquid crystal molecules. The orientation of the liquid crystal molecules can be changed by changing the electric field generated in the liquid crystal layer 50, and thus by changing the voltage applied to the first electrode 33 and the second electrode 43. The visible light transmittance of the liquid crystal layer 50 can be changed depending on the orientation of the liquid crystal molecules. The driving method of the liquid crystal molecules is not particularly limited, and may be a vertical alignment (VA) mode, twisted nematic (TN) mode, in-plane switching (IPS) mode, guest host (GH) mode, or a variation of these modes. It is preferable that the liquid crystal layer 50 does not contain a polymerizable compound.

[0054] Depending on the driving method adopted for the liquid crystal molecules of the liquid crystal layer 50, the light control member 20 may further include two polarizing plates disposed between them with the liquid crystal layer 50. Each of the first member 30 and the second member 40 may further include a polarizing plate.

[0055] As an example, a case will be described in which the driving method of the liquid crystal molecules contained in the liquid crystal layer 50 is the GH method. In the GH method, the liquid crystal layer 50 further contains a dichroic dye composition. In the GH method, the orientation of the liquid crystal molecules and the dichroic dye composition is restricted by the resin layer 80 and becomes horizontally aligned when no voltage is applied to the first electrode 33 and the second electrode 43. The visible light transmittance of the liquid crystal layer 50 is low. When a voltage is applied between the first electrode 33 and the second electrode 43, the electric field causes the liquid crystal molecules and the dichroic dye composition to approach a perpendicular orientation to the resin layer 80. The visible light transmittance of the liquid crystal layer 50 is increased. By changing the orientation of the liquid crystal molecules and the dichroic dye composition, the visible light transmittance of the liquid crystal layer 50 can be changed, as shown in Figures 2 and 3.

[0056] When no voltage is applied to the first electrode 33 and the second electrode 43, the liquid crystal molecules and the dichroic dye composition may be regulated by the resin layer 80 to be vertically aligned, and when a voltage is applied between the first electrode 33 and the second electrode 43, the electric field may cause the liquid crystal molecules and the dichroic dye composition to be aligned closer to horizontal to the resin layer 80. In other words, when no voltage is applied to the first electrode 33 and the second electrode 43, the liquid crystal layer 50 may have a high visible light transmittance, and when a voltage is applied to the first electrode 33 and the second electrode 43, the visible light transmittance may be low.

[0057] The liquid crystal layer 50 has a low haze value when its visible light transmittance is low. The light control component 20 including the liquid crystal layer 50 may have a haze value of 30% or less, or 15% or less when its visible light transmittance is low.

[0058] The haze value is expressed as the ratio of the diffuse transmittance to the total luminous transmittance of the object, and refers to the diffusion rate of light that passes through the object. Total luminous transmittance is the ratio of the amount of light that passes through the object to the amount of light that enters the object. Diffuse transmittance is the ratio of the amount of light that passes through the object in directions other than the straight-through direction to the amount of light that enters the object, i.e., the amount of light that is diffused and transmitted. Total luminous transmittance and diffuse transmittance are measured using a haze meter (e.g., NDH7000 manufactured by Nippon Denshoku Industries Co., Ltd.) that complies with JIS K7361.

[0059] At room temperature, the thickness of the liquid crystal layer 50 may be 1 μm or more, 10 μm or more, 20 μm or less, or 15 μm or less. The thickness of the liquid crystal layer 50 is maintained by the spacers 60. The thickness of the liquid crystal layer 50 may change depending on the temperature. For example, when the temperature of the liquid crystal layer 50 increases from 23° C. to 100° C., the thickness of the liquid crystal layer 50 increases by approximately 6%.

[0060] The sealant 55 extends so as to surround the liquid crystal layer 50. The sealant 55 prevents leakage of the liquid crystal layer 50 and adheres to the first member 30 and the second member 40 to fix them together. The material of the sealant 55 may be a thermosetting resin, an ultraviolet curable resin, or a thermal ultraviolet curable resin. Specifically, the material of the sealant 55 may be an acrylic resin, an epoxy resin, or an epoxy-acrylic resin.

[0061] The spacers 60 are disposed between the first member 30 and the second member 40 to maintain the thickness of the liquid crystal layer 50. In other words, the spacers 60 prevent the thickness of the liquid crystal layer 50 from becoming less than a predetermined value. Furthermore, the spacers 60 ensure a certain amount of space between the first member 30 and the second member 40. The shape of the spacers 60 may be spherical, cylindrical, elliptical, or polygonal. When the spacers 60 are cylindrical, the length of the spacers 60, i.e., their height, corresponds to the thickness of the liquid crystal layer 50. The spacers 60 are preferably spherical or nearly spherical so that an appropriate amount of space can be maintained between the first member 30 and the second member 40 regardless of their orientation. The average particle size of the spacers 60 may be 1 μm or more, 10 μm or more, 20 μm or less, or 15 μm or less. The spacers 60 may also be referred to as bead spacers.

[0062] The average particle size of the spacers 60 is determined by the following method: The side surface of the liquid crystal layer 50 in the thickness direction is measured using a scanning electron microscope (Hitachi High-Technologies S-4800) at an acceleration voltage of 3.0 kV and a magnification of 50,000 times to measure a particle size of 1 mm. 2 The side surface of the liquid crystal layer 50 in the thickness direction is observed under the same conditions, and the area of ​​the spacers is counted. 2 The particle size is measured for 1.5 times the number of spacers observed in the area of ​​1 mm. 2If 100 spacers are observed in an area of ​​100, the particle size of 150 spacers is measured. The particle size of a spacer is the value measured by sandwiching the observed spacer between two arbitrary parallel lines and measuring the distance between the two lines that results in the longest distance between the two lines. The average particle size (arithmetic mean diameter) of the particle sizes of the smallest 30% of the spacers whose particle sizes have been measured is taken as the average particle size of spacers 60. When measuring the particle size of spacers, even if the spacers are aggregated, i.e., when multiple spacers form a clump, or in other words, even if multiple spacers are in contact with each other, the particle size of each spacer in the spacer agglomerate, i.e., the spacer clump, is measured. When measuring the particle size of spacers, the spacer agglomerate is not considered to be a single spacer.

[0063] The spacers 60 are hard so that they can properly maintain the thickness of the liquid crystal layer 50. The hardness (flexibility) of the spacers 60 is quantified by an indentation test using a hardness tester (DUH-211S, manufactured by Shimadzu Corporation) conforming to ISO 14577. In the indentation test, the greater the amount of deformation when a load is applied to a single spacer 60, the higher the flexibility is determined. The amount of deformation of the spacer 60 measured by applying a load of 0.29 mN / s up to 5 mN to the spacer 60 using a 50 μm square flat indenter may be 0.1 μm or more or 1 μm or less.

[0064] The spacer 60 is 1 mm in plan view of the light adjusting member 20. 2 The number of spacers per unit area may be 30 or more, or 240 or less. When counting the number of spacers, if the spacers are aggregated, i.e., if a plurality of spacers form a mass, or in other words, if a plurality of spacers are in contact with each other, the spacer aggregate, i.e., the spacer mass, is counted as one spacer.

[0065] The spacers 60 may be made of an inorganic material such as silica, silicone, or acrylic resin, an organic material, or a core-shell structure that combines these materials. The color of the spacers 60 may be a color between the color of the liquid crystal layer 50 when its visible light transmittance is low and the color of the liquid crystal layer 50 when its visible light transmittance is high, or a color closer to the color of the liquid crystal layer 50 when its visible light transmittance is low than the intermediate color, or a color darker than the color of the liquid crystal layer 50 when its visible light transmittance is low. For example, the color of the spacers 60 may be black.

[0066] The spacer 60 is preferably held by one of the first member 30 and the second member 40, which is located on the opposite side to the resin layer 80. In the present embodiment, the spacer 60 is held by the second member 40. The spacer 60 may be held by the second member 40 by having adhesive properties. The spacer 60 may be held by the second member 40 by an adhesive layer (not shown) provided on the second member 40. Movement of the spacer 60 between the first member 30 and the second member 40 is restricted.

[0067] FIG. 6 is an enlarged view of the gap between the first member 30 and the second member 40 of the light-adjusting component 20 at room temperature. For simplicity, the configurations of the first member 30 and the second member 40 are omitted from FIG. 6. The light-adjusting component 20 shown in FIG. 6 is at room temperature. In this specification, "at room temperature" refers to a state in which the component has been exposed to an environment with a temperature of 23°C ± 5°C for 16 hours or more. Unless otherwise specified, this specification describes the light-adjusting component 20 exposed to room temperature.

[0068] As shown in FIG. 6, in a state at room temperature, the spacer 60 is in contact with both the resin layer 80 and the second member 40. The thickness t1 of the resin layer 80 in at least a part of the region where the spacer 60 and the resin layer 80 overlap in plan view is thinner than the thickness t2 of the resin layer 80 in the region where the spacer 60 and the resin layer 80 do not overlap in plan view (t1 < t2). The thickness t1 is the thickness of the resin layer 80 in the region overlapping the spacer 60, and refers to the thickness of the thinnest part among the regions overlapping the spacer 60. The thickness t2 refers to the thickness in the region located outside the peripheral region PA of the spacer 60. The thickness of the liquid crystal layer 50 may be the thickest at the portion P1 in contact with the spacer 60. Since the resin layer 80 has high flexibility, in the example shown in FIG. 6, the resin layer 80 is deformed so as to be crushed by being pressed by the spacer 60. The portion P1 of the resin layer 80 in contact with the spacer 60 may be deformed in a concave shape. The peripheral region PA of the spacer 60 is inclined so as to approach the second member 40 side as it goes outward from the portion P1 in contact with the spacer 60.

[0069] As shown in FIG. 6, in the state at room temperature, the average thickness t3 of the liquid crystal layer 50 in the peripheral region PA of the spacer 60 is greater than the thickness t4 of the liquid crystal layer 50 in the portion not in contact with the spacer 60 (t3>t4). The average thickness t3 of the liquid crystal layer 50 in the peripheral region PA of the spacer 60 refers to the average value of the thicknesses of the liquid crystal layer 50 included in the peripheral region PA. The thickness t4 of the liquid crystal layer 50 in the portion not in contact with the spacer 60 refers to the thickness of the liquid crystal layer 50 at any position outside the peripheral region PA in plan view. Also, the average visible light transmittance T1 of the light control member 20 in the peripheral region PA of the spacer 60 is lower than the visible light transmittance T2 of the light control member 20 in the portion not in contact with the spacer 60 (T1<T2). The average visible light transmittance T1 of the light control member 20 in the peripheral region PA refers to the average value of the visible light transmittances of the light control member 20 in the peripheral region PA. The visible light transmittance T2 of the light control member 20 in the portion not in contact with the spacer 60 refers to the visible light transmittance of the liquid crystal layer 50 at any position outside the peripheral region PA in plan view. The method for measuring the visible light transmittance is as described above. Thus, by confirming that the average visible light transmittance T1 is lower than the visible light transmittance T2, it can be confirmed that the thickness of the resin layer 80 in the portion in contact with the spacer 60 is thinner than the thickness of the resin layer 80 in the portion not in contact with the spacer 60. Note that FIG. 6 shows an example of the present embodiment, but the cross-sectional shapes of the spacer 60 and the resin layer 80 are not limited to this.

[0070] When the temperature around the light control member 20 changes, the temperature of the light control member 20 can also change. For example, as shown in FIG. 1, when the light control member 20 is used as an automotive sun visor, the temperature of the light control member 20 changes due to the change in the temperature inside the vehicle. When the temperature of the light control member 20 rises, the liquid crystal layer 50 expands due to heat. The thickness of the liquid crystal layer 50 changes. FIG. 7 shows the light control member 20 in a state heated to a high temperature. The state heated to a high temperature means the state immediately after being exposed to an environment at a temperature of 100°C ± 5°C for 1 hour or more. As shown in FIG. 7, in the state heated to a high temperature, the thickness of the liquid crystal layer 50 is greater than the thickness of the liquid crystal layer 50 at room temperature.

[0071] In a state heated to a high temperature, the spacer 60 may be in contact with both the resin layer 80 and the second member 40. In a state heated to a high temperature, the thickness t5 of the resin layer 80 in the region OA where the spacer 60 and the resin layer 80 overlap in a planar view may be maintained equal to or less than the thickness t6 of the resin layer 80 in the region where the spacer 60 and the resin layer 80 do not overlap in a planar view (t5≦t6). The thickness t5 refers to the thickness of the resin layer 80 in the region OA overlapping the spacer 60, and refers to the thickness of the thinnest portion of the region OA overlapping the spacer 60. The thickness t6 refers to the thickness of the resin layer 80 at an arbitrary position outside the peripheral region PA of the spacer 60. In the example shown in FIG. 7 , the liquid crystal layer 50 thermally expands and presses the resin layer 80 against the liquid crystal layer 50, deforming the spacer 60 so that it is pushed out of the resin layer 80. At this time, a portion of the spacer 60 may be embedded in the resin layer 80.

[0072] When heated to a high temperature, the average visible light transmittance T3 of the dimming component 20 in the peripheral region PA of the spacer 60 may be substantially equal to the visible light transmittance T4 of the dimming component 20 outside the peripheral region PA of the spacer 60, or may be lower than the visible light transmittance T4 (T3≦T4).

[0073] An example of a manufacturing method for the light control member 20 and the laminated plate 10 will be described. The manufacturing method for the light control member 20 includes the steps of preparing a first member and a second member, applying a sealant to the second member, forming a liquid crystal layer, stacking the first member and the second member, and cutting a portion of the first member and the second member. The manufacturing method for the laminated plate 10 includes the step of joining the first substrate 11 and the second substrate 12 to the light control member 20.

[0074] The first member 30 and the second member 40 are fabricated. The process for fabricating the second member 40 will be described below. The second electrode 43 is formed on the second substrate 41 by sputtering or the like. Next, a coating liquid prepared by dispersing a spacer 60 in a solvent together with a resin component is partially coated on the second electrode 43. The resin component is then dried and baked, successively, to harden the resin component. The spacer 60 is then fixed and held by the resin component. The spacer 60 may be adhered to the second electrode 43 by an adhesive or the like. Alternatively, the spacer 60 may have adhesive properties, and the spacer 60 may be held to the second member 40 by this adhesiveness. Through the above process, the second member 40 shown in FIG. 8 is fabricated. Although not shown, another resin layer or alignment film 45 (FIG. 4B) may be provided on the member located on the opposite side of the resin layer 80.

[0075] The process for producing the first member 30 will be described. The first electrode 33 is formed on the first substrate 31 by sputtering or the like. A coating liquid produced by dispersing a resin component that will form the resin layer 80 in a solvent is applied to the first electrode 33. The resin component is dried and baked in sequence, causing the resin component to harden and become the resin layer 80. An alignment control force may be imparted to the hardened resin component by rubbing, photoalignment, or the like. The resin layer 80 may also be formed without rubbing. The first member 30 is produced by the above process.

[0076] Next, a sealing material 55A is printed in a circumferential shape on the surface of the second member 40 on which the second electrode 43 is provided. The sealing material 55A is a viscous liquid material that has adhesive or sticky properties. The sealing material 55A hardens to become the sealing material 55. The sealing material 55A hardens when exposed to ultraviolet light, for example. As shown in FIG. 9, a liquid crystal material containing liquid crystal molecules is supplied to the area surrounded by the sealing material 55A to form the liquid crystal layer 50.

[0077] 10, under reduced pressure, the resin layer 80 and the first member 30 are placed on the surface of the second member 40 on which the sealing material 55A has been applied. When the resin layer 80 and the first member 30 are placed on the second member 40, they may be rubbed using a roller or the like. The sealing material 55A is deformed and hardened to become the sealing material 55. The first member 30 and the second member 40 are joined by the sealing material 55.

[0078] Next, parts of the first member 30 and the second member 40 are cut along the dotted lines shown in FIG. 11. The outer peripheral portions of the first member 30 and the second member 40 are removed. At least a portion of the cutting of the first member 30 and the second member 40 may be performed on the sealing material 55. The outer peripheral portions of the sealing material 55 may also be removed. The cutting of the first member 30 and the second member 40 may be performed using a tool such as a punching blade or a cutter, or a laser cutting device. Through the above steps, the light control member 20 is produced.

[0079] 12, a first bonding layer 13 and a first substrate 11 are laminated on one surface of the light control member 20. The first substrate 11 and the light control member 20 are bonded via the first bonding layer 13. A second bonding layer 14 and a second substrate 12 are laminated on the other surface of the light control member 20. The second substrate 12 and the light control member 20 are bonded via the second bonding layer 14. Through the above steps, the laminate 10 shown in FIG. 4A is produced.

[0080] The light control member 20 may be exposed to high temperatures for a long period of time. For example, if the light control member 20 is installed inside a car, the temperature inside the car increases due to sunlight or the like, and the light control member 20 is exposed to high temperatures for a long period of time. When the temperature of the light control member 20 increases, the liquid crystal layer 50 expands due to the heat.

[0081] In contrast, according to the present embodiment, the resin layer 80 is provided on at least one of the first member 30 and the second member 40 at a position in contact with the spacer 60. As a result, even when the liquid crystal layer 50 thermally expands upon transition from a room temperature state ( FIG. 13(A) ) to a high temperature state ( FIG. 13(B) ), the resin layer 80 follows the expansion of the liquid crystal layer 50. At this time, the spacer 60 remains in contact with the resin layer 80 and the second member 40. Therefore, even when the light control component 20 is disposed at an angle relative to the horizontal direction, as shown in FIGS. 13(A) and 13(B), the movement of liquid crystal molecules in the liquid crystal layer 50 due to gravity is suppressed. As a result, deterioration of the appearance of the light control component 20 due to uneven distribution of liquid crystal molecules can be suppressed in the liquid crystal layer 50 between the spacer 60 and the first member 30 and the second member 40. On the other hand, as a comparative example, if the resin layer 80 is not provided and the light control component is positioned at an angle to the horizontal, the liquid crystal molecules may move in the liquid crystal layer due to gravity, and the liquid crystal molecules may become unevenly distributed on the lower side in the vertical direction. The unevenly distributed liquid crystal molecules are clearly visible from outside the light control component.

[0082] According to this embodiment, when a load is applied to the resin layer 80 at a speed of 0.29 mN / s using a 50 μm square flat indenter, the load required to displace the resin layer 80 by 2 μm is 5.2 mN or less. By making the resin layer 80 flexible in this way, even when the light control component 20 is disposed at an angle to the horizontal direction and the liquid crystal layer 50 thermally expands, the spacer 60 remains in contact with the resin layer 80 and the second component 40. This prevents the liquid crystal molecules in the liquid crystal layer 50 from moving, and prevents deterioration of the appearance of the light control component 20 due to uneven distribution of the liquid crystal molecules.

[0083] Although one embodiment has been described, the present disclosure is not limited to the above embodiment. The above embodiment can be implemented in other forms, and various omissions, substitutions, changes, additions, etc. can be made without departing from the spirit of the present disclosure.

[0084] (Example) An embodiment of the present disclosure will be described in more detail with reference to examples, but the present disclosure is not limited to the examples.

[0085] As Examples 1 to 8, a plurality of light control components including a first member, a second member, a liquid crystal layer, a sealing material, a spacer, and a resin layer were prepared. In each of Examples 1 to 8, the material and thickness of the resin layer differed, but the other configurations were similar. The material and thickness of the resin layer in Examples 1 to 8 are as shown in Table 1 below. The first member included a first base material made of polyethylene terephthalate and having a thickness of 125 μm. The second member included a second base material made of polyethylene terephthalate and having a thickness of 125 μm. The average particle size of the spacers was 12 μm. The number of spacers was 1 mm when viewed from above the light control component. 2 The planar shape of the light control component was a rectangle of 100 mm x 120 mm.

[0086] In Examples 1 to 8, the liquid crystal amount in the liquid crystal layer was 95%. Here, the liquid crystal amount in the liquid crystal layer refers to the ratio between the volume of the liquid crystal to be filled and the volume of the region of the liquid crystal layer that should be filled with the liquid crystal before the liquid crystal is filled. The volume of the liquid crystal to be filled is the volume of the liquid crystal at atmospheric pressure. The volume of the region of the liquid crystal layer that should be filled with the liquid crystal before the liquid crystal is filled is the volume of the region of the liquid crystal layer that should be filled with the liquid crystal at atmospheric pressure, and is calculated by (volume of the space surrounded by the sealant) - (volume of the spacer). The volume of the liquid crystal to be filled is calculated, for example, by (weight of liquid crystal) / (density of liquid crystal).

[0087] The liquid crystal layer was filled with liquid crystal using the ODF (One Drop Fill) method. Specifically, a sealant was formed on a resin layer provided on a first member, and then liquid crystal was applied by dispense coating. Thereafter, in a vacuum environment, the first member was bonded to a second member to which a spacer was fixed by an alignment film, thereby producing each of the light control components of Examples 1 to 8.

[0088] A light control component including a first member, a second member, a liquid crystal layer, a sealing material, and a spacer was prepared as Comparative Example 1. Comparative Example 1 had the same configuration as Examples 1 to 8, except that the resin layer was not provided.

[0089] A light control component including a first member, a second member, a liquid crystal layer, a sealing material, and a spacer was prepared as Comparative Example 2. Comparative Example 2 had the same configuration as Examples 1 to 8, except that no resin layer was provided and the amount of liquid crystal was 100%.

[0090] (Load at 2 μm displacement) The softness of the resin layer of each light-adjusting component was quantified. Specifically, a 125 μm-thick polyethylene terephthalate (PET) film was laminated on a glass substrate, and the resin layer of each light-adjusting component was laminated on the film. The spacer described above was then placed on the resin layer. Spacers 60 made of acrylic resin with a particle size of 12 μm were used. Next, a load was applied to the spacer using a 50 μm square flat indenter at a speed of 0.29 mN / s, and the load (mN) was measured when the flat indenter was displaced 2 μm.

[0091] (Liquid crystal filling evaluation) Each light control component was visually inspected to see if the liquid crystal was evenly filled. For each light control component, those in which it was confirmed that the liquid crystal was evenly filled, as shown in Figure 14(A), were evaluated as "OK," while those in which the liquid crystal was not partially filled, as shown in Figure 14(B), were evaluated as "NG."

[0092] (Uneven distribution of liquid crystal molecules) Each light control component was placed at an angle to the horizontal and exposed to an environment at a temperature of 100°C ± 5°C for at least one hour, after which it was visually inspected to see if the liquid crystal molecules were unevenly distributed. Areas where the liquid crystal molecules were unevenly distributed were discoloured on the light control component, making them visible from the outside. For each light control component, those where no uneven distribution of the liquid crystal molecules was confirmed were rated as "A", those where the uneven distribution of the liquid crystal molecules was only inconspicuous were rated as "B", and those where the uneven distribution of the liquid crystal molecules was clearly confirmed as "C".

[0093] The results are shown in Table 1 below.

[0094] [Table 1]

[0095] From the results shown in Table 1, the following can be understood.

[0096] By providing the resin layer, the liquid crystal can be filled uniformly even with a reduced amount of liquid crystal, and uneven distribution of the liquid crystal molecules becomes less noticeable. In particular, when the load required to displace the resin layer by 2 μm using the above measurement method is 5.2 mN or less, uneven distribution of the liquid crystal molecules can be reduced to a level where it is no longer noticeable. This is thought to be because, when heated to a high temperature, the resin layer absorbs the increase in the thickness of the liquid crystal layer, thereby suppressing the movement of liquid crystal molecules between the spacer and the second component.

[0097] (Variation) Next, various modified examples of this embodiment will be described with reference to Figures 15 to 27. Figures 15 to 27 are views showing laminating plates according to modified examples of this embodiment. In Figures 15 to 27, the same parts as those shown in Figures 1 to 13 are designated by the same reference numerals, and detailed descriptions thereof will be omitted.

[0098] (First Modification) Fig. 15 shows a laminated board 10 according to a first modified example. As shown in Fig. 15, the laminated board 10 according to this modified example includes a first substrate 11, a first bonding layer 13, a light control member 20, a second bonding layer 14, and a second substrate 12. The first substrate 11, the first bonding layer 13, the light control member 20, the second bonding layer 14, and the second substrate 12 are stacked in this order.

[0099] The first bonding layer 13 is disposed between the first substrate 11 and the light control member 20 and serves to bond the first substrate 11 and the light control member 20 to each other. Similarly, the second bonding layer 14 is disposed between the second substrate 12 and the light control member 20 and serves to bond the second substrate 12 and the light control member 20 to each other.

[0100] 15, the first bonding layer 13, the light control component 20, and the second bonding layer 14 have the same planar shapes. The first substrate 11, the first bonding layer 13, the light control component 20, the second bonding layer 14, and the second substrate 12 may also have the same planar shapes. The thickness of the first bonding layer 13 is preferably uniform within its plane. The thickness of the second bonding layer 14 is preferably uniform within its plane.

[0101] In this modification, at least one of the first bonding layer 13 and the second bonding layer 14 is a bonded body containing a non-compression adhesive component. Both the first bonding layer 13 and the second bonding layer 14 may be bonded bodies containing a non-compression adhesive component. Here, the term "bonded body containing a non-compression adhesive component" refers to a bonded body that does not require pressure to be properly bonded to an adjacent object and that can be moderately bonded to an adjacent object under normal pressure. Examples of the "bonded body containing a non-compression adhesive component" include optically transparent resins such as OCA (Optical Clear Adhesive) or OCR (Optical Clear Resin), and curable resins (e.g., thermosetting resins, room temperature curing resins, two-component resins, ultraviolet curing resins, and electron beam curing resins).

[0102] In this modification, one of the first bonding layer 13 and the second bonding layer 14 may be made of OCR, and the other may be made of OCA. OCR is a liquid resin obtained by mixing a base resin, such as an acrylic resin, a silicone resin, or a urethane resin, with additives and then curing the mixture using, for example, ultraviolet (UV) light. OCA is a layer prepared, for example, as follows: First, a liquid curable adhesive layer composition containing a polymerizable compound is applied to a release film, such as polyethylene terephthalate (PET), and then cured using, for example, ultraviolet (UV) light to obtain an OCA sheet. The curable adhesive layer composition may be an optical pressure-sensitive adhesive, such as an acrylic resin, a silicone resin, or a urethane resin. After laminating the OCA sheet to the object, the release film is peeled off to obtain the layer made of OCA. The first bonding layer 13 and the second bonding layer 14 made of OCA each have optical transparency and preferably have heat resistance, moist heat resistance, and weather resistance up to at least about 120°C.

[0103] In FIG. 15 , one of the first bonding layer 13 and the second bonding layer 14 may be made of OCR, and the other may be made of OCA. Alternatively, both the first bonding layer 13 and the second bonding layer 14 may be made of OCR. Alternatively, both the first bonding layer 13 and the second bonding layer 14 may be made of OCA. Alternatively, one of the first bonding layer 13 and the second bonding layer 14 may be made of OCR, and the other may be made of a bonded body containing a pressure-bondable adhesive component. Examples of a bonded body containing a pressure-bondable adhesive component include resins such as polyvinyl butyral (PVB). Note that a "bonded body containing a pressure-bondable adhesive component" refers to a bonded body that requires pressure (i.e., pressure greater than atmospheric pressure) to properly bond to an adjacent object. Atmospheric pressure is environmental pressure, which is usually equal to atmospheric pressure and may be referred to as standard atmospheric pressure.

[0104] According to this modification, the first bonding layer 13, the light control component 20, and the second bonding layer 14 have the same planar shapes. This prevents the first bonding layer 13 and the second bonding layer 14 from undergoing non-uniform in-plane thermal expansion when the laminated plate 10 is heated to a high temperature during use. As a result, uneven distribution of liquid crystal molecules in the liquid crystal layer 50 of the light control component 20 due to non-uniform in-plane thermal expansion of the first bonding layer 13 and the second bonding layer 14 is prevented, and deterioration of the appearance of the laminated plate 10 can be prevented.

[0105] (Second Modification) FIG. 16 shows a laminated board 10 according to a second modified example. In the laminated board 10 shown in FIG. 16, the first bonding layer 13 and the second bonding layer 14 are connected to each other by an insert material 16. The insert material 16 is a frame-shaped member in plan view, and more specifically, a member having a square shape (a rectangular shape with a hollowed-out center) or a shape obtained by cutting off a part of a square shape. The insert material 16 may be made of a material having a thermal expansion coefficient close to that of the light control component 20. The difference between the thermal expansion coefficient of the insert material 16 and that of the light control component 20 is 3×10 -4 Less than or equal to 1.5 x 10 -4 Less than or equal to 5×10 -5 or less, more preferably 1×10 -5 The material of the insert 16 may be a resin such as polyethylene terephthalate (PET), polycarbonate (PC), or OCR. The thickness of the insert 16 is preferably the same as the thickness of the light control member 20.

[0106] The insert 16 is a member formed in a thickness portion of the light control member 20 in a cross-sectional view when the first bonding layer 13 and the second bonding layer 14 are larger than the light control member 20 in a plan view. The insert 16 is formed so as to surround the periphery of the light control member 20 in a plan view. The insert 16 has a shape obtained by hollowing out the planar shape of the light control member 20 from the planar shapes of the first bonding layer 13 and the second bonding layer 14.

[0107] The outer periphery of the insert 16 may be the same size as the outer periphery of the first substrate 11 and the second substrate 12. Alternatively, the outer periphery of the insert 16 may be larger or smaller than the outer periphery of the first substrate 11 and the second substrate 12. The inner periphery of the insert 16 may be the same size as the outer periphery of the photochromic component 20, or may be larger than the outer periphery of the photochromic component 20.

[0108] The thickness of the first bonding layer 13 is preferably uniform in the portion in contact with the light control component 20 and the portion not in contact with it (the portion in contact with the insert material 16). The thickness of the first bonding layer 13 is more preferably uniform within the plane. Similarly, the thickness of the second bonding layer 14 is preferably uniform in the portion in contact with the light control component 20 and the portion not in contact with it (the portion in contact with the insert material 16). The thickness of the second bonding layer 14 is more preferably uniform within the plane.

[0109] 16, one of the first bonding layer 13 and the second bonding layer 14 may be made of OCR, and the other may be made of OCA. Alternatively, both the first bonding layer 13 and the second bonding layer 14 may be made of OCR. Alternatively, both the first bonding layer 13 and the second bonding layer 14 may be made of OCA. Alternatively, one of the first bonding layer 13 and the second bonding layer 14 may be made of OCR, and the other may be made of a bonded body containing a pressure-bondable adhesive component. An example of a bonded body containing a pressure-bondable adhesive component is a resin such as polyvinyl butyral (PVB).

[0110] According to this modification, an insert material 16 is provided around the outer periphery of the light control component 20. This prevents the gap between the first substrate 11 and the second substrate 12 from becoming uneven in plane due to the difference in thermal expansion between the light control component 20 and the components surrounding it when the laminated plate 10 is heated to a high temperature during use. In other words, the area outside the light control component 20 and the area where the light control component 20 is present expand uniformly. This prevents the liquid crystal molecules in the liquid crystal layer 50 of the light control component 20 from becoming unevenly distributed due to the uneven gap between the first substrate 11 and the second substrate 12, thereby preventing deterioration of the appearance of the laminated plate 10. Furthermore, according to this modification, the intrusion of moisture and the like from the side surfaces of the laminated plate 10 is prevented, thereby further improving the water-blocking properties of the laminated plate 10. Furthermore, according to this modification, the first substrate 11 (first bonding layer 13) and the second substrate 12 (second bonding layer 14) can be substantially held in place by the insert material 16, not by the light control component 20. This prevents peeling of the sealing material 55 that constitutes the dimming member 20, i.e., prevents peeling between the first member 30 and the second member 40, and therefore prevents peeling between the first substrate 11 (first bonding layer 13) and the second substrate (second bonding layer 14).

[0111] (Third Modification) Fig. 17 shows a laminated board 10 according to a third modified example. In the laminated board 10 shown in Fig. 17, a peripheral fixing member 17 is provided on the periphery of the first substrate 11, the first bonding layer 13, the light control member 20, the second bonding layer 14, and the second substrate 12. The peripheral fixing member 17 may be made of, for example, a sealant, a resin, or a metal. Examples of the sealant include thermosetting resins such as epoxy resin and acrylic resin, and ultraviolet-curable resins.

[0112] The peripheral fixing member 17 is a frame-shaped member in plan view, and more specifically, a rectangular shape (a square shape with a hollowed-out center) or a shape obtained by cutting off a portion of a rectangular shape. In cross-sectional view, the peripheral fixing member 17 is formed in the thickness portions of the first substrate 11, the first bonding layer 13, the light control member 20, the second bonding layer 14, and the second substrate 12. In plan view, the peripheral fixing member 17 is formed so as to surround the peripheries of the first substrate 11, the first bonding layer 13, the light control member 20, the second bonding layer 14, and the second substrate 12. The inner periphery of the peripheral fixing member 17 may be the same size as the outer peripheries of the first substrate 11, the first bonding layer 13, the light control member 20, the second bonding layer 14, and the second substrate 12. The thickness of the peripheral fixing member 17 may be the same as the total thickness of the first substrate 11, the first bonding layer 13, the light control member 20, the second bonding layer 14, and the second substrate 12.

[0113] 17, one of the first bonding layer 13 and the second bonding layer 14 may be made of OCR, and the other may be made of OCA. Alternatively, both the first bonding layer 13 and the second bonding layer 14 may be made of OCR. Alternatively, both the first bonding layer 13 and the second bonding layer 14 may be made of OCA. Alternatively, one of the first bonding layer 13 and the second bonding layer 14 may be made of OCR, and the other may be made of a bonded body containing a pressure-bondable adhesive component. An example of a bonded body containing a pressure-bondable adhesive component is a resin such as polyvinyl butyral (PVB).

[0114] According to this modification, peripheral fixing members 17 are provided around the peripheries of the first substrate 11, the first bonding layer 13, the light control member 20, the second bonding layer 14, and the second substrate 12. In this case, the first bonding layer 13, the light control member 20, and the second bonding layer 14 have the same planar shapes. This prevents the in-plane spacing between the first substrate 11 and the second substrate 12 from becoming uneven when the laminated plate 10 is heated to a high temperature during use. As a result, uneven distribution of liquid crystal molecules in the liquid crystal layer 50 of the light control member 20 due to the uneven spacing between the first substrate 11 and the second substrate 12 is prevented, and deterioration of the appearance of the laminated plate 10 is prevented. Furthermore, according to this modification, intrusion of moisture and the like from the side surfaces of the laminated plate 10 is prevented, thereby further improving the water-proofing properties of the laminated plate 10. Furthermore, according to this modification, the first substrate 11 (first bonding layer 13) and the second substrate 12 (second bonding layer 14) can be substantially held by the outer periphery fixing member 17, rather than by the light adjusting member 20. This makes it possible to prevent the light adjusting member 20 from peeling off from the first substrate 11 (first bonding layer 13) or the second substrate 12 (second bonding layer 14).

[0115] (Fourth Modification) FIG. 18 shows a laminated plate 10 according to a fourth modified example. The laminated plate 10 shown in FIG. 18 includes a first substrate 11, a first bonding layer 13, a first antireflection layer 23, a second antireflection layer 24, a third bonding layer 15, a light control component 20, a second bonding layer 14, and a second substrate 12. The first substrate 11, the first bonding layer 13, the first antireflection layer 23, the second antireflection layer 24, the third bonding layer 15, the light control component 20, the second bonding layer 14, and the second substrate 12 are stacked in this order. A gap layer G is provided between the first bonding layer 13 and the light control component 20, more specifically, between the first antireflection layer 23 and the second antireflection layer 24. The first bonding layer 13 and the second bonding layer 14 are connected to each other by a peripheral bonding layer 18.

[0116] The first bonding layer 13 and the second bonding layer 14 may each be composed of a bonding material containing a pressure-bondable adhesive component. Examples of bonding materials containing a pressure-bondable adhesive component include resins such as polyvinyl butyral (PVB). The third bonding layer 15 bonds the second antireflection layer 24 and the light control component 20 to each other. The planar shape of the third bonding layer 15 may be the same as the planar shape of the light control component 20. The third bonding layer 15 is composed of a bonding material containing a non-pressure-bondable adhesive component such as OCA or OCR. Alternatively, the third bonding layer 15 may be composed of a bonding material containing a pressure-bondable adhesive component. The third bonding layer 15 may be composed of the same material as the first bonding layer 13 and the second bonding layer 14. In this case, the peripheral bonding layer 18 may be integrated with the first bonding layer 13 and the second bonding layer 14.

[0117] The peripheral bonding layer 18 is a member having a frame shape in a plan view, and more specifically, a square shape (a rectangular shape with a hollowed-out center) or a shape obtained by cutting off a portion of a square shape. In a cross-sectional view, the peripheral bonding layer 18 is formed on the first antireflection layer 23, the gap layer G, the second antireflection layer 24, the light control component 20, the third bonding layer 15, and a thickness portion of the light control component 20. In a plan view, the peripheral bonding layer 18 is formed so as to surround the periphery of the first antireflection layer 23, the gap layer G, the second antireflection layer 24, the light control component 20, the third bonding layer 15, and the light control component 20. The inner periphery of the peripheral bonding layer 18 may be the same size as the periphery of the first antireflection layer 23, the gap layer G, the second antireflection layer 24, the light control component 20, the third bonding layer 15, and the light control component 20. The peripheral bonding layer 18, the first bonding layer 13, and the second bonding layer 14 may be made of the same material. The peripheral bonding layer 18 may be made of a bonding material containing a pressure-bonding adhesive component of a resin such as polyvinyl butyral (PVB).

[0118] The first antireflection layer 23 and the second antireflection layer 24 are each provided at a position facing the air gap layer G. The planar shapes of the first antireflection layer 23 and the second antireflection layer 24 are smaller than the planar shapes of the first bonding layer 13 and the second bonding layer 14. The planar shapes of the first antireflection layer 23 and the second antireflection layer 24 may be the same as the planar shape of the light control component 20.

[0119] The gap layer G is formed in the space between the first antireflection layer 23 and the second antireflection layer 24. That is, the first antireflection layer 23 and the second antireflection layer 24 are not bonded to each other but are arranged with a certain gap therebetween in the thickness direction. The gap layer G is filled with air, but is not limited thereto and may be filled with a gas such as nitrogen or an inert gas. The thickness of the gap layer G is, for example, greater than 0 μm and less than or equal to 10,000 μm, and preferably 0.1 μm or greater and 100 μm or less. The planar shape of the gap layer G may be substantially the same as the planar shapes of the first antireflection layer 23 and the second antireflection layer 24.

[0120] The first antireflection layer 23 and / or the second antireflection layer 24 may be, for example, an AR (Anti-Reflection) film. An AR film is a film that suppresses regular reflection by utilizing the interference of reflected light. Examples of the structure of the first antireflection layer 23 and the second antireflection layer 24 include a single-layer structure consisting of a low-refractive index layer, a two-layer structure in which a low-refractive index layer and a high-refractive index layer are arranged so that the low-refractive index layer is the surface layer, and a multilayer structure in which layers are alternately stacked so that the low-refractive index layer is the surface layer. The high-refractive index layer and the low-refractive index layer are expressed in terms of the relative relationship between the refractive indexes of adjacent layers. For example, if a layer has a higher refractive index than a comparable layer, the higher layer is the high-refractive index layer, and the lower layer is the low-refractive index layer. Examples of materials for forming the low-refractive index layer include silicon oxide, magnesium fluoride, and fluorine-containing resins. Examples of materials for forming the high-refractive index layer include titanium oxide, zinc sulfide, zirconium oxide, and niobium oxide.

[0121] For example, colored glass (tint glass) with a low visible light transmittance may be used as the first substrate 11. The visible light transmittance of the colored glass may be 10% or more and 60% or less. The method for measuring the visible light transmittance is as described above. By using glass with a low visible light transmittance as the first substrate 11, the effects of the first antireflection layer 23 and the second antireflection layer 24 can be further enhanced, and the reflection of light at the air gap layer G can be further reduced.

[0122] As shown in FIG. 18 , an extension 25 may be formed by a portion of the first antireflection layer 23 and a portion of the second antireflection layer 24. The extension 25 protrudes outward from the laminate 10 in the planar direction. The extension 25 has a generally rectangular shape in a planar view and extends outward from the first substrate 11 and the second substrate 12. The extension 25 has a vent hole that connects the gap layer G between the light control component 20 and the first antireflection layer 23 with the outside air. In this case, even if air escapes from the gap layer G between the first antireflection layer 23 and the second antireflection layer 24 during processing of the laminate 10, the gap layer G can be restored by injecting air or a gas such as nitrogen through the vent hole. After restoring the gap layer G between the first antireflection layer 23 and the second antireflection layer 24, the vent hole may be sealed with an adhesive, a liquid bonding layer, or the like. The location where the extension 25 is provided is not limited, but it is preferable to provide it somewhere other than near the corners of the light adjusting member 20 in order to prevent wrinkles and the like from occurring.

[0123] According to this modification, a gap layer G is provided between the first bonding layer 13 and the light adjusting member 20. As a result, when the laminated plate 10 is heated to a high temperature during use, the gap layer G absorbs the thermal expansion of the light adjusting member 20. In other words, the gap layer G makes it easier to obtain the effect of suppressing the movement of liquid crystal molecules in the liquid crystal layer 50 between the spacer 60 and the first member 30 and the second member 40, as described above. As a result, uneven distribution of the liquid crystal molecules in the liquid crystal layer 50 of the light adjusting member 20 can be suppressed, and deterioration of the appearance of the laminated plate 10 can be suppressed.

[0124] Furthermore, according to this modified example, by providing the air gap layer G between the first antireflection layer 23 and the second antireflection layer 24, it is possible to reduce the reflection of light at the interface between the dimming component 20 and the air gap layer G or at the interface between the first bonding layer 13 and the air gap layer G.

[0125] Fig. 19 shows another example of the laminated plate 10 according to the fourth modified example. As shown in Fig. 19, a first substrate 11A with an anti-reflection (AR) function may be used as the first substrate. In this case, the first bonding layer 13 and the first anti-reflection layer 23 may not be provided.

[0126] 19, the first substrate 11A may have a multi-layer structure. For example, the first substrate 11A may have a pair of glass plates and a bonding layer located between the pair of glass plates. The bonding layer may be a bonding material containing a pressure-bonding adhesive component such as polyvinyl butyral (PVB).

[0127] (Fifth Modification) FIG. 20 shows a laminated plate 10 according to a fifth modified example. The laminated plate 10 shown in FIG. 20 includes a first substrate 11, a first bonding layer 13, a first antireflection layer 23, a second antireflection layer 24, a third bonding layer 15, a light control component 20, a second bonding layer 14, and a second substrate 12. The first substrate 11, the first bonding layer 13, the first antireflection layer 23, the second antireflection layer 24, the third bonding layer 15, the light control component 20, the second bonding layer 14, and the second substrate 12 are stacked in this order. A gap layer G is provided between the first bonding layer 13 and the light control component 20, more specifically, between the first antireflection layer 23 and the second antireflection layer 24. The first bonding layer 13 and the second bonding layer 14 are connected to each other by a peripheral bonding layer 18.

[0128] 20, the first bonding layer 13 is made of a bonding material containing a non-compression adhesive component such as OCA or OCR. The planar shape of the first bonding layer 13 may be the same as the planar shape of the first antireflection layer 23. The planar shape of the first bonding layer 13 may be smaller than the planar shape of the first substrate 11.

[0129] Fig. 21 shows another example of a laminate 10 according to the fifth modified example. In Fig. 21, the first bonding layer 13 is made of a bonding material containing a non-pressure-bonding adhesive component such as OCA or OCR. The planar shapes of the first bonding layer 13 and the first antireflection layer 23 may be the same as the planar shape of the first substrate 11. The planar shapes of the first bonding layer 13 and the first antireflection layer 23 may be larger than the planar shapes of the air gap layer G, the second antireflection layer 24, the third bonding layer 15, and the light control component 20.

[0130] Fig. 22 shows another example of the laminated plate 10 according to the fifth modified example. As shown in Fig. 22, a first substrate 11A with an anti-reflection (AR) function may be used as the first substrate. In this case, the first bonding layer 13 and the first anti-reflection layer 23 may not be provided.

[0131] 22, the first substrate 11A may have a multi-layer structure. For example, the first substrate 11A may have a pair of glass plates and a bonding layer located between the pair of glass plates. The bonding layer may be a bonding material containing a pressure-bonding adhesive component such as polyvinyl butyral (PVB).

[0132] 20 to 22, the configuration other than that described above may be the same as that of the fourth modified example shown in FIG.

[0133] (Sixth Modification) FIG. 23 shows a laminated plate 10 according to a sixth modified example. The laminated plate 10 shown in FIG. 23 includes a first substrate 11, a first bonding layer 13, a first antireflection layer 23, a second antireflection layer 24, a third bonding layer 15, a light control component 20, a second bonding layer 14, and a second substrate 12. The first substrate 11, the first bonding layer 13, the first antireflection layer 23, the second antireflection layer 24, the third bonding layer 15, the light control component 20, the second bonding layer 14, and the second substrate 12 are stacked in this order. A gap layer G is provided between the first bonding layer 13 and the light control component 20, more specifically, between the first antireflection layer 23 and the second antireflection layer 24. The first substrate 11 and the second substrate 12 are connected to each other by a peripheral fixing member 17A.

[0134] In the laminate 10 shown in Fig. 23, the first bonding layer 13 is made of a bonding material containing a non-pressure-bonding adhesive component such as OCA or OCR. The second bonding layer 14 is made of a bonding material containing a non-pressure-bonding adhesive component such as OCA or OCR. The first bonding layer 13, the first antireflection layer 23, the air gap layer G, the third bonding layer 15, the light control component 20, and the second bonding layer 14 may have the same planar shapes. The planar shapes of the first bonding layer 13, the first antireflection layer 23, the air gap layer G, the third bonding layer 15, the light control component 20, and the second bonding layer 14 may be smaller than the planar shapes of the first substrate 11 and the second substrate 12.

[0135] The peripheral fixing member 17A is a frame-shaped member in plan view, and more specifically, a rectangular shape (a square shape with a hollowed-out center) or a shape obtained by cutting off a portion of a rectangular shape. In cross-sectional view, the peripheral fixing member 17A is formed in the thickness portions of the first bonding layer 13, the first antireflection layer 23, the gap layer G, the second antireflection layer 24, the third bonding layer 15, the light control component 20, and the second bonding layer 14. The peripheral fixing member 17A is formed so as to surround the periphery of the first bonding layer 13, the first antireflection layer 23, the gap layer G, the second antireflection layer 24, the third bonding layer 15, the light control component 20, and the second bonding layer 14 in plan view. The inner circumference of the outer fixing member 17A may be the same size as the outer circumference of the first bonding layer 13, the first antireflection layer 23, the air gap layer G, the second antireflection layer 24, the third bonding layer 15, the dimming member 20, and the second bonding layer 14.

[0136] The peripheral fixing member 17A may be made of, for example, a sealant, an adhesive, a resin, or a metal. Examples of the sealant include thermosetting resins such as epoxy resin and acrylic resin, and ultraviolet-curable resins. Examples of the adhesive include double-sided tape with an acrylic foam base.

[0137] 23, the first bonding layer 13 and the second bonding layer 14 may be made of a bonded body containing a pressure-sensitive adhesive component such as polyvinyl butyral (PVB). Alternatively, one of the first bonding layer 13 and the second bonding layer 14 may be made of a bonded body containing a non-pressure-sensitive adhesive component such as OCA or OCR, and the other may be made of a bonded body containing a pressure-sensitive adhesive component such as polyvinyl butyral (PVB).

[0138] Fig. 24 shows another example of a laminated plate 10 according to the sixth modified example. In Fig. 24, the peripheral fixing member 17A is formed in a thickness portion of the first substrate 11, the first bonding layer 13, the first antireflection layer 23, the gap layer G, the second antireflection layer 24, the third bonding layer 15, the light control component 20, the second bonding layer 14, and the second substrate 12 in a cross-sectional view. The peripheral fixing member 17A is formed so as to surround the periphery of the first substrate 11, the first bonding layer 13, the first antireflection layer 23, the gap layer G, the second antireflection layer 24, the third bonding layer 15, the light control component 20, the second bonding layer 14, and the second substrate 12 in a plan view. The inner periphery of the outer periphery fixing member 17A may be the same size as the outer periphery of the first substrate 11, the first bonding layer 13, the first antireflection layer 23, the gap layer G, the second antireflection layer 24, the third bonding layer 15, the light control member 20, the second bonding layer 14, and the second substrate 12. The thickness of the outer periphery fixing member 17A may be the same as the total thickness of the first substrate 11, the first bonding layer 13, the first antireflection layer 23, the gap layer G, the second antireflection layer 24, the third bonding layer 15, the light control member 20, the second bonding layer 14, and the second substrate 12.

[0139] Fig. 25 shows another example of the laminated plate 10 according to the sixth modified example. As shown in Fig. 25, a first substrate 11A with an anti-reflection (AR) function may be used as the first substrate. In this case, the first bonding layer 13 and the first anti-reflection layer 23 may not be provided.

[0140] 25, the first substrate 11A may have a multi-layer structure. For example, the first substrate 11A may have a pair of glass plates and a bonding layer located between the pair of glass plates. The bonding layer may be a bonding material containing a pressure-bonding adhesive component such as polyvinyl butyral (PVB).

[0141] 23 to 25, the configuration other than that described above may be the same as that of the fourth modified example shown in FIG.

[0142] (Seventh Modification) Fig. 26 shows a laminated board 10 according to a seventh modified example. As shown in Fig. 26, the laminated board 10 according to this modified example includes a first substrate 11, a first bonding layer 13, a light control member 20, a second bonding layer 14, and a second substrate 12. The first substrate 11, the first bonding layer 13, the light control member 20, the second bonding layer 14, and the second substrate 12 are stacked in this order. The first bonding layer 13 and the second bonding layer 14 are connected to each other by a peripheral bonding layer 18.

[0143] First bonding layer 13 may be made of a bonding material containing a non-compression adhesive component such as OCR, and second bonding layer 14 may be made of a bonding material containing a non-compression adhesive component such as OCA.

[0144] The peripheral bonding layer 18 is a member that has a frame shape in a plan view, and more specifically, a square shape (a rectangular shape with a hollowed-out center) or a shape obtained by cutting off a part of a square shape. The peripheral bonding layer 18 is formed in the thickness portion of the light control component 20 in a cross-sectional view. The peripheral bonding layer 18 is formed so as to surround the periphery of the light control component 20 in a plan view. The inner periphery of the peripheral bonding layer 18 may be the same size as the outer periphery of the light control component 20. The peripheral bonding layer 18 may be made of the same material as the first bonding layer 13 and may be integrated with the first bonding layer 13.

[0145] FIG. 27 shows another example of the laminate 10 according to the seventh modified example. As shown in FIG. 27, the peripheral bonding layer 18 may be formed in the thickness portion of the light control component 20 and the second bonding layer 14. The peripheral bonding layer 18 is formed so as to surround the periphery of the light control component 20 and the second bonding layer 14 in a plan view. The inner periphery of the peripheral bonding layer 18 may be the same size as the outer periphery of the light control component 20 and the second bonding layer 14. The peripheral bonding layer 18 may be made of the same material as the first bonding layer 13 and may be integrated with the first bonding layer 13. The peripheral bonding layer 18 may be directly connected to the second substrate 12.

[0146] 26 and 27, the configuration other than that described above may be the same as that of the fifth modified example shown in FIG.

[0147] It is also possible to combine the multiple components disclosed in the above embodiments and modifications as needed, or to delete some of the components disclosed in the above embodiments and modifications. [Explanation of symbols]

[0148] 1. Mobile 10 laminated board 11, 11A First board 12 Second board 13 1st bonding layer 14 Second bonding layer 15 Third bonding layer 16 Insert material 17 Periphery fixing member 17A Periphery fixing member 18 Peripheral bonding layer 20. Light-adjusting materials 23 First anti-reflection layer 24 Second anti-reflection layer 25 Extension 30 First member 31 First base material 33 1st electrode 40 Second member 41 Second base material 43 2nd electrode 45 Other resin layers or alignment films 50 liquid crystal layer 55 Sealing material 55A sealing material 60 spacer 80 resin layer G void layer

Claims

1. a first member including a first substrate; a second member including a second substrate facing the first substrate; a liquid crystal layer disposed between the first member and the second member; a spacer positioned between the first member and the second member, A light control member, comprising: a resin layer provided on at least one of the first member and the second member.

2. The dimming component according to claim 1, wherein the thickness of the resin layer in at least a portion of the area where the spacer and the resin layer overlap in a planar view is thinner than the thickness of the resin layer in an area where the spacer and the resin layer do not overlap in a planar view.

3. 2. The dimming component according to claim 1, wherein, when exposed to an environment at a temperature of 100°C ± 5°C for one hour or more, the thickness of the resin layer in at least a portion of the area where the spacer and the resin layer overlap in a planar view is maintained to be equal to or less than the thickness of the resin layer in the area where the spacer and the resin layer do not overlap in a planar view.

4. 2. The light control component according to claim 1, wherein when a load is applied to the resin layer at a rate of 0.29 mN / s using a 50 μm square flat indenter, the load required to displace the resin layer by 2 μm is 5.2 mN or less.

5. The light control component according to claim 1 , wherein the resin layer has a thickness of 0.5 μm or more and 10 μm or less.

6. The light control member according to claim 1 , wherein the resin layer is formed by laminating a plurality of layers.

7. The light control component according to claim 1 , further comprising: another resin layer or an alignment film provided on a component located on the opposite side of the resin layer.

8. The light control member according to claim 1 , wherein the material of the resin layer is dipentaerythritol hexaacrylate (DPHA) or urethane acrylate.

9. a first substrate and a second substrate facing each other; A laminate comprising: the light control member according to claim 1 disposed between the first substrate and the second substrate.

10. a first bonding layer that bonds the first substrate and the light control member to each other; The laminate according to claim 9 , further comprising a second bonding layer that bonds the second substrate and the light control member to each other.

11. The laminate according to claim 10 , wherein the first bonding layer and the second bonding layer have uniform thicknesses within their planes.

12. The laminate of claim 10 , wherein the first and second bonding layers are connected to each other by an insert.

13. 13. The laminate according to claim 12, wherein the material of the insert is polyethylene terephthalate, polycarbonate or OCR.

14. The laminate according to claim 10 , further comprising a peripheral fixing member provided on a periphery of the first substrate, the first bonding layer, the light control member, the second bonding layer, and the second substrate.

15. The laminate according to claim 10 , wherein a gap layer is provided between the first bonding layer and the light control member.

16. The laminate according to claim 15, further comprising an anti-reflection layer provided at a position facing the air gap layer.

17. 17. The laminate of claim 16, wherein the first substrate is tinted glass.

18. The laminate according to claim 15 , wherein the first substrate has an anti-reflection function.

Images