JP2024027488A - Dimmer laminate, and manufacturing method of dimmer laminate - Google Patents

Abstract

To provide a dimmer laminate capable of improving visibility, and a manufacturing method of a dimmer laminate.SOLUTION: A dimmer laminate has two sealing sheets, and a dimmer sheet 20 which is positioned between the two sealing sheets and is sealed by the sealing sheets, wherein the sealing sheet includes a first sealing base material film 11A constituting the surface of the dimmer laminate, a first thermoplastic resin layer 11B positioned between the first sealing base material film 11A and the dimmer sheet 20, and a first primer layer 31 which is positioned in at least one of the first sealing base material film 11A and the first thermoplastic resin layer 11B, and between the first thermoplastic resin layer 11B and the dimmer sheet 20, and a difference between a refractive index of the first sealing base material film 11A and a refractive index of the dimmer laminate is set to 0 or more and 0.3 or less.SELECTED DRAWING: Figure 4

Description

The present disclosure relates to a light control laminate including a light control sheet sandwiched between sealing sheets, and a method for manufacturing the light control laminate.

The light control sheet includes a light control layer and a pair of transparent electrode layers sandwiching the light control layer. The light control layer includes a transparent resin layer that defines a plurality of voids, and a liquid crystal composition that fills the voids. The applied voltage between the transparent electrode layers changes the refractive index difference between the liquid crystal composition and the transparent resin layer. Changing the refractive index difference between the liquid crystal composition and the transparent resin layer reversibly changes the state of the light control sheet from transparent to opaque.

The light control laminate includes a light control sheet and a pair of sealing sheets sandwiching the light control sheet. One sealing sheet covers the surface and end surfaces of the light control sheet. The other sealing sheet covers the back surface and end surface of the light control sheet. The edge of one sealing sheet is fused to the edge of another sealing sheet (for example, see Patent Document 1).

JP2020-034612A

The light control laminate described above increases the water resistance of the light control sheet. On the other hand, in a light control laminate in which a light control sheet is sealed in a sealing sheet, the traveling direction of light incident on the light control layer is dispersed into wavelength ranges of each color at the interface between the light control sheet and the sealing sheet. Coloration such as iridescent spots due to dispersion of incident light reduces the visibility of objects through the light control laminate.

A light control laminate for solving the above problem includes two sealing sheets, and a light control sheet positioned between the two sealing sheets and sealed by the sealing sheet. It is an optical laminate. The light control sheet includes a transparent resin layer that defines a plurality of voids, a liquid crystal composition that fills the voids, and a first transparent electrode film located between the transparent resin layer and one of the sealing sheets. , a second transparent electrode film located between the transparent resin layer and the other sealing sheet. The sealing sheet includes a transparent base film constituting the surface of the light control laminate, a thermoplastic resin layer located between the base film and the light control sheet, and a thermoplastic resin layer located between the base film and the light control sheet. and a primer layer located between the thermoplastic resin layer and at least one of the thermoplastic resin layer and the light control sheet. The primer layer has a thickness such that the difference between the refractive index of the base film and the refractive index of the light control laminate is 0 or more and 0.3 or less.

A method for manufacturing a light control laminate to solve the above problem is a light control laminate in which a light control sheet is placed between two sealing sheets and the light control sheet is sealed by fusing the sealing sheets. It is a method of manufacturing the body. The light control sheet includes a transparent resin layer that defines a plurality of voids, a liquid crystal composition that fills the voids, and a first transparent electrode film located between the transparent resin layer and one of the sealing sheets. , a second transparent electrode film located between the transparent resin layer and the other sealing sheet. The sealing sheet includes a transparent base film constituting the surface of the light control laminate, a thermoplastic resin layer located between the base film and the light control sheet, and a thermoplastic resin layer located between the base film and the light control sheet. and a primer layer located between the thermoplastic resin layer and at least one of the thermoplastic resin layer and the light control sheet. Then, the primer layer is formed to a thickness such that the difference between the refractive index of the base film and the refractive index of the light control laminate is 0 or more and 0.3 or less.

According to each of the above configurations, the primer layer has a thickness such that the difference between the refractive index of the base film and the refractive index of the light control laminate is 0 or more and 0.3 or less. Therefore, wavelength dispersion of incident light caused by a difference in refractive index between the base film and other layers constituting the light control laminate is suppressed. As a result, visibility of objects through the dimming laminate is increased.

In the above light control laminate, the thickness of the primer layer may be 2 μm or less. According to this configuration, the effectiveness of the above-mentioned effects is increased. Further, the thickness of the primer layer is such that it is possible to maintain the light transmittance of the light control laminate, and it is also possible to ensure the interlayer adhesion required for the primer layer.

In the light control laminate, the sealing sheet includes the primer layer between the base film and the thermoplastic resin layer and between the thermoplastic resin layer and the light control sheet, respectively. You can. According to this configuration, since the number of primer layers increases, the difference between the refractive index of the base film and the refractive index of the light control laminate is easily adjusted by the thickness of the primer layer.

In the light control laminate, the primer layer may contain modified polyolefin. According to this configuration, the effectiveness of the above-mentioned effects is increased.

According to the above-described light control laminate and method for manufacturing a light control laminate, the visibility of objects through the light control laminate increases.

FIG. 1 is a perspective view of a light control laminate. FIG. 2 is a sectional view taken along line 2-2 in FIG. FIG. 3 is a layer configuration diagram of the light control layer. FIG. 4 is a layer configuration diagram of the light control laminate. FIG. 5 is a layer configuration diagram of a light control laminate in a modified example. FIG. 6 is a layer configuration diagram of a light control laminate in a modified example.

Hereinafter, one embodiment of a light control laminate and a method for manufacturing the light control laminate will be described.
[Dimmer laminate]
The light control laminate is used as a member to partition a space. The light control laminate itself may be the member that partitions the space, or the adhesive body attached to the transparent member may be the member that partitions the space. In the adhesive body, the light control laminate may be attached to one transparent body, or the light control laminate may be sandwiched between two transparent members. The members that separate spaces are window glass and partitions. Window glass is mounted on moving objects such as vehicles and aircraft, and installed in buildings such as office buildings and public facilities. The partition is placed in the interior of the car or the indoor space. The light control laminate may be planar or curved. The light control laminate is attached to a transparent member via a transparent adhesive layer. An example of the transparent adhesive layer is an OCA film (Optical Clear Adhesive film).

The driving type of the light control laminate may be a normal type or a reverse type. A normal type dimming laminate transitions from opaque to transparent when a voltage signal is supplied, and returns from transparent to opaque when the supply is stopped. A dimming stack applied in reverse transitions from transparent to opaque by application of a voltage signal, and from opaque back to transparent by cessation of supply.

As shown in FIG. 1, the light control laminate includes a first sealing sheet 11, a second sealing sheet 12, and a light control sheet 20. The light control sheet 20 is arranged between the first sealing sheet 11 and the second sealing sheet 12. The entire light control sheet 20 is covered with the first sealing sheet 11 in a plan view from a position facing the surface of the first sealing sheet 11. The entire light control sheet 20 is covered with the second sealing sheet 12 in a plan view viewed from a position facing the back surface of the second sealing sheet 12.

The signal transmission section 51 connects the first transparent electrode layer 21B of the light control sheet 20 (see FIG. 3) and the second transparent electrode layer of the light control sheet 20 through the space between the first sealing sheet 11 and the second sealing sheet 12. The transparent electrode layer 22B (see FIG. 2) is connected to the transparent electrode layer 22B (see FIG. 2). The signal transmission section 51 supplies the light control sheet 20 with a voltage signal that drives the light control sheet 20 . The signal transmission section 51 may be composed of a conductive connection layer and a flexible wiring board. The signal transmission section 51 may be composed of a conductive paste layer, a conductive tape, and a lead wire.

As shown in FIG. 2, the first sealing sheet 11 includes a first sealing base film 11A, a first thermoplastic resin layer 11B, and a first primer layer 31 (see FIG. 4). The second sealing sheet 12 includes a second sealing base film 12A, a second thermoplastic resin layer 12B, and a second primer layer 32 (see FIG. 4).

The first sealing base film 11A is bonded to the light control sheet 20 via the first thermoplastic resin layer 11B and the first primer layer 31. The entire light control sheet 20 is covered with a first thermoplastic resin layer 11B and a first primer layer 31. The gap between the first sealing sheet 11 and the light control sheet 20 is filled with the first thermoplastic resin layer 11B and the first primer layer 31.

The second sealing base film 12A is bonded to the light control sheet 20 via the second thermoplastic resin layer 12B and the second primer layer 32. The entire light control sheet 20 is covered with a second thermoplastic resin layer 12B and a second primer layer 32. The gap between the second sealing sheet 12 and the light control sheet 20 is filled with the second thermoplastic resin layer 12B and the second primer layer 32.

The peripheral edge of the second sealing sheet 12 is joined to the peripheral edge of the first sealing sheet 11. The first sealing sheet 11 and the second sealing sheet 12 are bonded through a part of the first thermoplastic resin layer 11B or a part of the second thermoplastic resin layer 12B. The end face 10E of the light control laminate is composed of the end faces of each of the sealing sheets 11 and 12, and the thermoplastic resin that joins these together. Thereby, the entire light control sheet 20 is sealed by each of the sealing sheets 11 and 12.

Each of the sealing base films 11A and 12A may be independently a colorless transparent film or a colored transparent film. The constituent material of each of the sealing base films 11A and 12A may be independently transparent resin or transparent inorganic glass. An example of the transparent resin is at least one selected from the group consisting of polyester, polyacrylate, polyolefin, polycarbonate, polystyrene, nylon resin, and polyurethane. An example of transparent inorganic glass is at least one type selected from the group consisting of silicon oxide, silicon oxynitride, and silicon nitride. Each of the sealing sheets 11 and 12 may contain an ultraviolet absorber from the viewpoint of improving the ultraviolet resistance of the light control sheet 20. The constituent resin of the sealing sheet 11 may be the same as the constituent resin of the sealing sheet 12, or may be different from the constituent resin of the sealing sheet 12.

Each of the sealing base films 11A and 12A may be independently a single layer structure or a laminated structure. The thickness of each of the sealing base films 11A and 12A is preferably 50 μm or more from the viewpoint of improving the waterproof property of the light control sheet 20. The thickness of each sealing base film 11A, 12A is determined from the viewpoint of improving the light transmittance of the light control laminate, and also improving the workability of joining the light control sheet 20 and each sealing base film 11A, 12A. From the viewpoint of this, the thickness is preferably 300 μm or less.

[Dimmer sheet 20]
As shown in FIG. 3, the light control sheet 20 includes a first transparent electrode film 21, a second transparent electrode film 22, and a light control layer 23. The first transparent electrode film 21 includes a first electrode base film 21A and a first transparent electrode layer 21B laminated on the first electrode base film 21A. The second transparent electrode film 22 includes a second electrode base film 22A and a second transparent electrode layer 22B laminated on the second electrode base film 22A.

Each of the electrode base films 21A and 22A may be independently a colorless transparent film or a colored transparent film. The constituent material of each electrode base film 21A, 22A may be independently transparent resin or transparent inorganic glass. An example of the transparent resin is one selected from the group consisting of polyester, polyacrylate, polyolefin, and polycarbonate. An example of the transparent inorganic glass is one selected from the group consisting of silicon oxide, silicon oxynitride, and silicon nitride.

Each electrode base film 21A, 22A may have a single layer structure or a multilayer structure. The thickness of each electrode base film 21A, 22A is preferably 20 μm or more from the viewpoint of improving the mechanical resistance of the light control sheet 20. The thickness of each electrode base film 21A, 22A is preferably 200 μm or less from the viewpoint of improving the light transmittance of the light control sheet 20.

Each transparent electrode layer 21B, 22B is independently colorless and transparent. The constituent material of each transparent electrode layer 21B, 22B is one selected from the group consisting of a conductive inorganic oxide, a metal, and a conductive organic polymer compound. An example of the conductive inorganic oxide is one selected from the group consisting of indium tin oxide, fluorine-doped tin oxide, tin oxide, and zinc oxide. The metals are gold and silver nanowires. An example of the conductive organic polymer compound is one selected from the group consisting of carbon nanotubes and poly(3,4-ethylenedioxythiophene).

The thickness of each transparent electrode layer 21B, 22B is preferably 0.1 μm or more from the viewpoint of improving electrical conductivity. The thickness of each transparent electrode layer 21B, 22B is preferably 10 μm or less from the viewpoint of improving light transmittance.

The light control layer 23 includes a transparent resin layer 23P and a liquid crystal composition 23L. The light control layer 23 includes spacers dispersed throughout the light control layer 23. The light control layer 23 is located between the first transparent electrode layer 21B and the second transparent electrode layer 22B. The light control layer 23 may be in direct contact with the first transparent electrode layer 21B and the second transparent electrode layer 22B, or may be in contact with the first transparent electrode layer 21B and the second transparent electrode layer 22B via an alignment layer. May be joined. The alignment layer applies an alignment regulating force to the liquid crystal compound of the light control layer 23. The alignment regulating force that the alignment layer applies to the liquid crystal compound makes the light control layer 23 transparent. The first transparent electrode layer 21B and the second transparent electrode layer 22B are located between the first electrode base film 21A and the second electrode base film 22A.

The transparent resin layer 23P defines a plurality of voids in the light control layer 23. The liquid crystal composition 23L contains a liquid crystal compound and an additive. The additive is any one selected from the group consisting of viscosity reducing agents, antifoaming agents, antioxidants, weathering agents, and dichroic dyes. The transparent resin layer 23P is a cured product of an ionizing radiation curable compound. An example of the ionizing radiation curable compound is at least one selected from the group consisting of acrylate compounds, methacrylate compounds, styrene compounds, thiol compounds, and oligomers of each compound. The liquid crystal composition 23L fills the voids defined in the transparent resin layer 23P. Examples of liquid crystal compounds include Schiff base-based, azo-based, azoxy-based, biphenyl-based, terphenyl-based, benzoic acid ester-based, tolan-based, pyrimidine-based, cyclohexanecarboxylic acid ester-based, phenylcyclohexane-based, and dioxane-based. At least one type selected.

The content of the transparent resin layer 23P relative to the total amount of the transparent resin layer 23P and the liquid crystal composition 23L is preferably 30% by mass or more and 70% by mass or less, from the viewpoint of easily achieving both transparency and opacity. The thickness of the light control layer 23 is preferably 5 μm or more and 50 μm or less from the viewpoint of easily achieving both transparency and opacity with low power consumption. The holding type of the liquid crystal composition 23L in the light control layer 23 may be a polymer network type or a capsule type in addition to the polymer dispersion type. The polymer network type includes a polymer network having a three-dimensional network shape, and holds the liquid crystal composition 23L in the voids of the polymer network. The capsule type holds the liquid crystal composition 23L in a capsule within a polymer network.

[Primer layers 31, 32]
As shown in FIG. 4, the first thermoplastic resin layer 11B is arranged between the first sealing base film 11A and the light control sheet 20. The first primer layer 31 is arranged between the first thermoplastic resin layer 11B and the light control sheet 20. The first sealing base film 11A is bonded to the light control sheet 20 via the first thermoplastic resin layer 11B and the first primer layer 31.

The second thermoplastic resin layer 12B is arranged between the second sealing base film 12A and the light control sheet 20. The second primer layer 32 is arranged between the second thermoplastic resin layer 12B and the light control sheet 20. The second sealing base film 12A is bonded to the light control sheet 20 via the second thermoplastic resin layer 12B and the second primer layer 32.

An example of the constituent material of each thermoplastic resin layer 11B, 12B is at least one selected from the group consisting of polypropylene, polyurethane, polyacrylate, polystyrene, silicone resin, and epoxy resin. The constituent material of the first thermoplastic resin layer 11B may be the same as the constituent material of the second thermoplastic resin layer 12B, or the constituent material of the first thermoplastic resin layer 11B may be the same as that of the second thermoplastic resin layer 12B, and the second thermoplastic resin may be fused to the second thermoplastic resin layer 12B. It may be different from the constituent material of layer 12B. The thickness of each thermoplastic resin layer 11B, 12B is preferably 1 μm or more from the viewpoint of improving heat fusion properties and sealing properties. The thickness of each thermoplastic resin layer 11B, 12B is 100 μm or less from the viewpoint of improving the transparency of the light control laminate.

The first primer layer 31 has adhesiveness to the first electrode base film 21A and the first thermoplastic resin layer 11B. The first primer layer 31 may be composed of a pretreatment agent applied to the first electrode base film 21A, or may be composed of a pretreatment agent applied to the first thermoplastic resin layer 11B. good.

The second primer layer 32 has adhesive properties to the second electrode base film 22A and the second thermoplastic resin layer 12B. The second primer layer 32 may be composed of a pretreatment agent applied to the second electrode base film 22A, or may be composed of a pretreatment agent applied to the second thermoplastic resin layer 12B. good.

An example of the constituent material of each primer layer 31, 32 is an acid-modified polyolefin primer modified with an unsaturated carboxylic acid. Other examples of the constituent materials of each primer layer 31, 32 are a urethane primer made of acrylic polyol and polyisocyanate, a polyethyleneimine primer, a polyester primer, and a polyacrylate primer.

The refractive index of each of the sealing base films 11A and 12A is 1.4 or more and 1.7 or less. The refractive index of the light control laminate is 1.4 or more and 1.7 or less. The refractive index of each sealing base film 11A, 12A is different from the refractive index of light control sheet 20 and each thermoplastic resin layer 11B, 12B. The refractive index of the first primer layer 31 is such that the difference between the refractive index of the first sealing base film 11A and the refractive index of the light control laminate when transparent is 0 or more and 0.3 or less. The refractive index of the second primer layer 32 is such that the difference between the refractive index of the second sealing base film 12A and the refractive index of the light control laminate when transparent is 0 or more and 0.3 or less. The refractive index of each primer layer 31, 32 is adjusted by changing the respective constituent material or by changing the tensile elastic modulus of the constituent material. Thereby, it is possible to suppress the occurrence of iridescent spots due to dispersion of incident light at the interface between layers inside the light control laminate.

The refractive index of the first primer layer 31 may be between the refractive index of the first sealing base film 11A and the refractive index of the light control sheet 20 when transparent. The refractive index of the first primer layer 31 may be between the refractive index of the first sealing base film 11A and the first thermoplastic resin layer 11B. The refractive index of the second primer layer 32 is between the refractive index of the second sealing base film 12A and the refractive index of the light control sheet 20 when transparent. The refractive index of the second primer layer 32 is between the refractive index of the second sealing base film 12A and the second thermoplastic resin layer 12B. Thereby, it is possible to suppress the occurrence of iridescent spots due to dispersion of incident light at the interface between each primer layer 31, 32 and another layer.

When the refractive index of the first sealing base film 11A is lower than the refractive index of the light control sheet 20 when transparent or the refractive index of the first thermoplastic resin layer 11B, the refractive index of the first primer layer 31 when transparent is lower than the refractive index of the light control sheet 20 and the refractive index of the first thermoplastic resin layer 11B. When the refractive index of the second sealing base film 12A is lower than the refractive index of the light control sheet 20 when transparent or the refractive index of the second thermoplastic resin layer 12B, the refractive index of the first primer layer 31 when transparent is lower than the refractive index of the light control sheet 20 and the refractive index of the first thermoplastic resin layer 11B. The thickness of each primer layer 31, 32 may be 2 μm or less from the viewpoint of maintaining the light transmittance of the light control laminate and improving interlayer adhesion.

[Method for manufacturing light control laminate]
The manufacturing method of the light control laminate includes the first sealing sheet 11 and the second sealing sheet 12 such that the light control sheet 20 is arranged between the first sealing sheet 11 and the second sealing sheet 12. and the light control sheet 20 are laminated. The laminating method is a dry laminating method in which each thermoplastic resin layer 11B, 12B is cured by heating and pressurizing.

First, after each uncured thermoplastic resin layer 11B, 12B is laminated on each sealing base film 11A, 12A through coating and drying, each uncured primer layer 31, 32 is coated with each thermoplastic resin layer. The layers 11B and 12B are laminated through coating and drying. Note that the primer layers 31 and 32 are arranged such that the periphery of each thermoplastic resin layer 11B and 12B protrudes from each primer layer 31 and 32.

Next, the light control sheet 20 is cut out from a large sheet including each layer constituting the light control sheet 20. A signal transmission section 51 is joined to each transparent electrode layer 21B, 22B of the light control sheet 20. Subsequently, the first electrode base film 21A is brought into contact with the uncured first primer layer 31 so that the periphery of the first thermoplastic resin layer 11B covers the periphery of the light control sheet 20. The second electrode base film 22A is brought into contact with the uncured second primer layer 32 so that the periphery of the second thermoplastic resin layer 12B covers the periphery of the light control sheet 20. Then, the periphery of the first thermoplastic resin layer 11B is joined to the periphery of the second thermoplastic resin layer 12B. As a result, a light control laminate is manufactured through curing of each thermoplastic resin layer 11B, 12B and curing of each primer layer 31, 32.

[effect]
As described above, according to the above embodiment, the following effects can be obtained.
(1) Each primer layer 31, 32 has a thickness such that the difference between the refractive index of each sealing base film 11A, 12A and the refractive index of the light control laminate is 0 or more and 0.3 or less. Therefore, the wavelength dispersion of incident light caused by the difference in refractive index between each of the sealing base films 11A, 12A and other layers constituting the light control laminate is suppressed. As a result, visibility of objects through the dimming laminate is increased.

(2) If the thickness of each primer layer 31, 32 is 2 μm or less, the thickness of each primer layer 31, 32 is sufficient to maintain the light transmittance of the light control laminate; It is also possible to ensure the interlayer adhesion required for No. 32.

Note that the above embodiment can be modified and implemented as follows.
- As shown in FIG. 5, the first primer layer 31 may be arranged between the first sealing base film 11A and the first thermoplastic resin layer 11B. The second primer layer 32 may be arranged between the second sealing base film 12A and the second thermoplastic resin layer 12B. Even with this configuration, it is possible to obtain effects similar to the above (1) and (2).

- As shown in FIG. 6, in addition to the first primer layer 31, a third primer layer 33 may be arranged between the first sealing base film 11A and the first thermoplastic resin layer 11B. In addition to the second primer layer 32, a fourth primer layer 34 may be disposed between the second sealing base film 12A and the second thermoplastic resin layer 12B. According to this configuration, since the number of primer layers 31, 32, 33, 34 increases, the difference between the refractive index of each sealing base film 11A, 12A and the refractive index of the light control laminate increases , 32, 33, and 34.

- The end face 10E of the light control laminate may include the end face of the light control sheet 20. At this time, the end surface 10E of the light control laminate may be covered with a sealing material that seals the end surface of the light control sheet 20.
- The light control laminate includes functional layers other than the first sealing sheet 11, the second sealing sheet 12, and the light control sheet 20 on the side of the first sealing sheet 11 with respect to the first thermoplastic resin layer 11B. Good too. Further, the light control laminate includes functional layers other than the first sealing sheet 11, the second sealing sheet 12, and the light control sheet 20 on the side of the second sealing sheet 12 with respect to the second thermoplastic resin layer 12B. You can. An example of the functional layer is a protective layer for protecting the light control layer 23 and each transparent electrode layer 21B, 22B. An example of the protective layer is at least one selected from the group consisting of a gas barrier layer, an ultraviolet barrier layer, and a hard coat layer. Another example of a functional layer is a polarizing layer that contributes to controlling light transmission.

11... First sealing sheet 11A... First sealing base film 11B... First thermoplastic resin layer 12... Second sealing sheet 12A... Second sealing base film 12B... Second thermoplastic resin layer 20... Light control sheet 21...First transparent electrode film 21A...First electrode base film 21B...First transparent electrode layer 22...Second transparent electrode film 22A...Second electrode base film 22B...Second transparent electrode layer 23...Tone Optical layer 23L...Liquid crystal composition 23P...Transparent resin layer 31...First primer layer 32...Second primer layer 33...Third primer layer 34...Fourth primer layer

Claims (5)

two sealing sheets,
A light control laminate comprising: a light control sheet located between the two sealing sheets and sealed by the sealing sheet;
The light control sheet is
a transparent resin layer that defines a plurality of voids;
a liquid crystal composition filling the void;
a first transparent electrode film located between the transparent resin layer and one of the sealing sheets;
a second transparent electrode film located between the transparent resin layer and the other sealing sheet;
Equipped with
The sealing sheet is
a transparent base film constituting the surface of the light control laminate;
a thermoplastic resin layer located between the base film and the light control sheet;
A primer layer located between the base film and the thermoplastic resin layer and between the thermoplastic resin layer and the light control sheet, the primer layer having a refractive index of the base film and the light control sheet. A light control laminate comprising: the primer layer having a difference in refractive index from the optical laminate to 0 or more and 0.3 or less. The light control laminate according to claim 1, wherein the thickness of the primer layer is 2 μm or less. The sealing sheet is
The primer layer is provided between the base film and the thermoplastic resin layer and between the thermoplastic resin layer and the light control sheet, respectively.
The light control laminate according to claim 1. The light control laminate according to claim 1, wherein the primer layer contains a modified polyolefin. A method for producing a light control laminate, which comprises arranging a light control sheet between two sealing sheets and sealing the light control sheet by fusing the sealing sheets, the method comprising:
The light control sheet is
a transparent resin layer that defines a plurality of voids;
a liquid crystal composition filling the void;
a first transparent electrode film located between the transparent resin layer and one of the sealing sheets;
a second transparent electrode film located between the transparent resin layer and the other sealing sheet;
Equipped with
The sealing sheet is
a transparent base film constituting the surface of the light control laminate;
a thermoplastic resin layer located between the base film and the light control sheet;
A primer layer located between the base film and the thermoplastic resin layer and between the thermoplastic resin layer and the light control sheet, the primer layer having a refractive index of the base film and the light control sheet. A method for manufacturing a light control laminate, comprising: the primer layer having a difference in refractive index from 0 to 0.3.

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