JP2004279549A - Method for manufacturing liquid crystal light modulation film, liquid crystal light modulation film, and liquid crystal light modulator - Google Patents

Abstract

A method of manufacturing a liquid crystal light modulation film having a wide operating temperature range, a liquid crystal light modulation film, and a liquid crystal light modulator are provided.
A resin structure is dispersed in a liquid crystal material, and the liquid crystal material and the resin structure are respectively oriented in a certain direction. By controlling at least one of them, the temperature dependence of liquid crystal alignment is controlled to manufacture a liquid crystal light modulation film. The obtained liquid crystal light modulation film 10 is a composite in which a resin structure 14 is dispersed in a liquid crystal material 12, and the liquid crystal material 12 and the resin structure 14 are oriented in the same direction. A pair of transparent substrates 20a and 20b provided with a pair of alignment films 16a and 16b and transparent electrodes 18a and 18b, respectively, is provided with the liquid crystal light modulation film 10 interposed therebetween. In the case where the resin structure 14 has a mesh shape, the mesh size includes a mesh portion in which the short side of the mesh is 1 μm or less.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for manufacturing a liquid crystal light modulation film, a liquid crystal light modulation film, and a liquid crystal light modulator, and more particularly, to a liquid crystal light modulator used for a display device.
[0002]
[Prior art]
When an electro-optic effect of liquid crystal is applied, in which an electric field is applied to a liquid crystal material to change the alignment state of liquid crystal molecules, a light modulation film that mainly changes light intensity can be realized. A light modulation film using this liquid crystal (hereinafter, referred to as a liquid crystal light modulation film) operates at a lower voltage than an optical crystal exhibiting another electro-optic effect. For this reason, a modulator using a liquid crystal light modulation film (hereinafter, referred to as a liquid crystal light modulator) has attracted attention as an electro-optical element for a display in recent years.
[0003]
The liquid crystal light modulating film is usually sandwiched between an alignment film mainly composed of a polyimide resin film and a glass substrate with a transparent electrode, and the initial alignment of liquid crystal molecules is determined by the alignment film.
[0004]
When a voltage is applied to the liquid crystal light modulating film through the transparent electrode, the liquid crystal light modulator configured as described above changes the molecular orientation state of the liquid crystal, so that the polarization direction, phase, intensity, etc. The optical characteristics of the emitted light change. Thereby, the electro-optical effect of the liquid crystal is developed.
[0005]
On the other hand, a liquid crystal light modulation film in which a resin is dispersed in a liquid crystal material has also been proposed (for example, see Non-Patent Document 1).
[0006]
Various liquid crystal materials such as a nematic liquid crystal, a cholesteric liquid crystal, and a smectic liquid crystal are currently used as a liquid crystal material used for such a liquid crystal light modulation film.
[0007]
Among these liquid crystal materials, surface-stable ferroelectric liquid crystals having spontaneous polarization and exhibiting a chiral smectic C phase have a high-speed light modulation function of several tens to several hundreds of microseconds, so that they are applied to display devices for moving images. Is expected.
[0008]
[Non-patent document 1]
Y. K Fung D. K. Yang, et. al. , “Polymer networks formed in liquid crystal” Liq. Cryst. , Vol 19, no6, pp. 146-315. 797-801 1995
[0009]
[Problems to be solved by the invention]
However, when any of the above liquid crystal materials is used for a liquid crystal light modulator, if the ambient temperature is extremely high, the alignment of the liquid crystal molecules is lost, in other words, the liquid crystallinity is lost, and the light modulation function is exhibited. No longer.
[0010]
In addition, when a nematic liquid crystal or a cholesteric liquid crystal is used, if the operating environment temperature changes, the degree of alignment order of the liquid crystal molecules, in other words, the degree of alignment of the liquid crystal molecules changes. fluctuate. In particular, a rise in temperature lowers the degree of orientation of liquid crystal molecules, which causes a problem of lowering the contrast ratio of display.
[0011]
When a surface-stable ferroelectric liquid crystal having spontaneous polarization and exhibiting a chiral smectic C phase is used, there is a problem similar to the above, and in particular, there is a problem that a display defect easily occurs.
[0012]
The present invention has been made in view of the above problems, and has as its object to provide a method of manufacturing a liquid crystal light modulation film, a liquid crystal light modulation film, and a liquid crystal light modulator that have a small change in display characteristics due to a temperature change. .
[0013]
Another object of the present invention is to provide a method for manufacturing a liquid crystal light modulation film having a wide operating temperature range, a liquid crystal light modulation film, and a liquid crystal light modulator.
[0014]
[Means for Solving the Problems]
In order to achieve the above object, a method for manufacturing a liquid crystal light modulation film according to the present invention includes dispersing a resin structure in a liquid crystal material, and orienting the liquid crystal material and the resin structure in a certain direction, The temperature dependency of liquid crystal alignment is controlled by controlling at least one of the shape, dispersion state, and alignment state of the resin structure.
[0015]
Here, the temperature dependence of the liquid crystal alignment refers to the property that the orientation of the liquid crystal changes with temperature, and controlling the temperature dependence of the liquid crystal alignment refers to the liquid crystal alignment regulating action of the resin structure. Means to reduce the change due to temperature.
[0016]
According to the above configuration of the present invention, the operating temperature range of the liquid crystal can be controlled, and a liquid crystal light modulation film with little change in display characteristics due to temperature change when used in a display device can be obtained. Further, a liquid crystal light modulation film having a wide operating temperature range can be obtained.
[0017]
In this case, a step of mixing a liquid crystal material and a liquid crystalline monomer as a precursor of the resin structure to prepare a mixed liquid, and applying the mixed liquid to a member to be laminated on which a liquid crystal light modulation film is to be laminated. It is preferable to include a step of forming a film and a step of curing or precipitating a liquid crystalline monomer in the coating film to form a resin structure.
[0018]
Further, in this case, it is preferable to heat the liquid mixture or the coating film to a temperature at which the liquid crystal phase shows a nematic phase or a smectic phase in the step of preparing the liquid mixture or the step of forming the resin structure.
[0019]
In the liquid crystal light modulation film according to the present invention, a resin structure is dispersed in a liquid crystal material, and liquid crystal molecules of the liquid crystal material and the resin structure are respectively oriented in a certain direction. It has a mesh shape and includes a mesh portion in which the short-axis side dimension of the mesh is 1 μm or less, or the resin structure has a fiber shape and includes a fiber arrangement in which the spacing between adjacent fibers is 1 μm or less. Thus, the effect of the present invention can be obtained.
[0020]
In this case, it is preferable that the dispersion rate of the resin structure is 40% by mass or less. Here, the lower limit of the dispersion rate is not particularly limited, but is preferably, for example, 1% by mass or more from the viewpoint of suitably obtaining the effects of the present invention.
[0021]
In this case, it is preferable that the resin structure is formed by curing a liquid crystalline monomer as a precursor.
[0022]
Further, in the liquid crystal light modulator according to the present invention, when the liquid crystal light modulation film is sequentially sandwiched between a pair of alignment films and a pair of transparent substrates with transparent electrodes, the liquid crystal light modulation The effect of the film can be suitably obtained.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
Preferred embodiments of a method for manufacturing a liquid crystal light modulation film, a liquid crystal light modulation film, and a liquid crystal light modulator according to the present invention (hereinafter, referred to as embodiments) will be described below with reference to the drawings. .
[0024]
First, a liquid crystal light modulation film and a liquid crystal light modulator according to the present embodiment will be described with reference to the liquid crystal display device of FIG. FIG. 1 schematically shows the structure of the liquid crystal light modulation film.
[0025]
The liquid crystal light modulation film 10 is a composite in which a resin structure 14 is dispersed in a liquid crystal material 12. The liquid crystal material (liquid crystal molecules of the liquid crystal material) 12 and the resin structure 14 of the liquid crystal light modulation film 10 are oriented in the same direction. However, the present invention is not limited to this, and the liquid crystal material 12 and the resin structure 14 may be aligned in different directions.
[0026]
The liquid crystal light modulating film 10 is sandwiched between a pair of alignment films 16a and 16b. Further, outside the pair of alignment films 16a and 16b, transparent substrates 20a and 20b having transparent electrodes 18a and 18b are provided, respectively. The liquid crystal light modulator 22 is constituted by these components as a whole.
[0027]
Further, a pair of polarizing plates 24a and 24b having linear polarization is provided with the pair of transparent substrates 20a and 20b of the liquid crystal light modulator 22 interposed therebetween. The transparent electrodes 20a and 20b are connected to a power supply 28 that supplies an AC voltage via lead wires 26a and 26b, respectively. The liquid crystal display device 30 is composed of all these components.
[0028]
The resin structure 14 of the liquid crystal light modulation film 10 preferably has an oriented, ie, anisotropic, fibrous structure, or a mesh structure. A resin structure having a network structure is effective in stably maintaining the molecular orientation of the liquid crystal when using a ferroelectric liquid crystal.
[0029]
From the viewpoint of favorably providing the anchoring effect as the alignment regulating force to the liquid crystal molecules, the resin structure 14 preferably has a mesh size of 1 μm or less when the resin structure has a mesh shape. I do. That is, a structure including a mesh having a minor axis side of 1 μm or less is adopted. In this case, there is no particular limitation on the dimension of the net surface on the long axis side. When the resin structure has a fiber shape, the spacing between adjacent fibers is preferably 1 μm or less. That is, a structure including a fiber array having a minor axis dimension of 1 μm or less is adopted. Although these dimensions do not particularly define the lower limit values, for example, when the dimension is less than about 10 nm, the dimensions become substantially the same as the dimensions of the liquid crystal molecules, and the resin structure moves following the liquid crystal molecules, and the anchoring effect is reduced. It may be damaged.
[0030]
The maximum dimension of the resin structure 14 is preferably equal to or smaller than the wavelength of the incident light. If the maximum dimension is exceeded, light scattering may occur, and polarization and phase may be disturbed, and contrast characteristics of light modulation may be deteriorated.
[0031]
The resin structure 14 is preferably formed by curing or the like using a resin precursor having excellent solubility in the liquid crystal material (liquid crystal) 12 as a material. As such a resin precursor, a liquid crystal monomer having its own molecular orientation is suitable. However, instead of the liquid crystal monomer, a resin such as an acrylic resin, an epoxy resin, or a urethane resin, or a copolymer of these resins can be used.
[0032]
As the liquid crystal material 12, a material having low viscosity and high elasticity is suitable, and for example, a nematic liquid crystal material of a biphenyl type, a terphenyl type, a phenylcyclohexane type, a fluorine type, a trans type or an ester type can be suitably used.
[0033]
Further, when using a ferroelectric liquid crystal as the liquid crystal material 12, the refractive index anisotropy [Delta] n ([Delta] n = abnormalities refractive index n _theta - ordinary refractive index n _o) is the larger, increasing the polarization state of the incident light This is preferable because it can be controlled. Further, by using a material having a large spontaneous polarization, good high-speed response and low-voltage driving can be obtained. Ferroelectric liquid crystal materials having such characteristics include Schiff base ferroelectric liquid crystal, azo ferroelectric liquid crystal, azoxy ferroelectric liquid crystal, biphenyl ferroelectric liquid crystal, ester ferroelectric liquid crystal, and phenyl ferroelectric liquid crystal. Pyrimidine ferroelectric liquid crystals and the like can be mentioned. One of these materials can be selected, or two or more can be used as a mixture. In a liquid crystal light modulation film using a ferroelectric liquid crystal, the initial alignment direction of liquid crystal molecules and the alignment direction of a resin structure are not necessarily the same, but sufficient alignment stability with respect to temperature can be obtained.
[0034]
Although the resin structure 14 is dispersed in the liquid crystal material 12 as described above, by having this structure, the alignment direction of the liquid crystal becomes discontinuous when the temperature fluctuates. Defects (zigzag defects) can be suppressed.
[0035]
The resin structure 14 is preferably dispersed in the liquid crystal material 12 at a content (dispersion rate) of 40% by mass or less. When the content exceeds 40% by mass, the liquid crystal content of the liquid crystal light modulating film is too small, so that it is impossible to effectively control the alignment of the liquid crystal, and there is a possibility that a good light modulating operation cannot be obtained. However, even when the content of the resin structure 14 exceeds 40% by mass and the liquid crystal is dispersed and fixed in the resin structure 14 in the form of small droplets, if the thickness of the liquid crystal light modulation film 10 is increased, It is possible to obtain a sufficient light modulation operation. On the other hand, the lower limit of the content of the resin structure 14 is not particularly specified, but is set to, for example, about 1% by mass or more so as not to impair the effects of the present invention.
[0036]
When the thickness of the liquid crystal light modulation film 10 is about 1 to 30 μm, it is suitable for performing modulation with a high light utilization factor. In this case, by dispersing spacer particles having a uniform particle diameter, such as a hard resin or silicon dioxide, in the liquid crystal light modulation film 10, the thickness of the liquid crystal light modulation film 10 can be more precisely controlled. .
[0037]
Orientation films 16a, 16b can be formed using polyimide resin that has been subjected to photo-alignment treatment by irradiation of rubbing or polarized ultraviolet light, polyvinyl alcohol resins, oblique vapor deposited SiO, an SiO ₂ or the like suitably. Note that the alignment films 16a and 16b may be omitted as necessary.
[0038]
As a material of the transparent electrodes 18a and 18b, a transparent metal oxide material such as tin-doped indium oxide (ITO) is preferable. The transparent electrodes 18a and 18b can be obtained by forming a film of these transparent metal oxide materials using a method such as a vacuum evaporation method, an ion plating method, and a sputtering method. Further, instead of the transparent metal oxide material, an organic polymer conductive material such as a polythiophene resin may be applied by spin coating or printing to form the transparent electrodes 18a and 18b.
[0039]
As a material for the transparent substrates 20a and 20b, a glass plate or a plastic film can be used. Examples of the resin used for the plastic film include flexible plastic films such as polycarbonate, polycarbonate terephthalate, polyethersulfone, and polyethylene terephthalate.
[0040]
In the liquid crystal display device 30 according to the present embodiment configured as described above, the incident light is linearly polarized by the polarizing plate 24a and is incident on the transparent substrate 20a. The polarization state is controlled by the effect, and the intensity is modulated (light-modulated) by the light absorption of the polarizing plate 24b to become the output light.
[0041]
That is, the orientation state of the liquid crystal molecules in the liquid crystal light modulation film 10 changes according to the strength of the applied voltage, so that the polarization state of light changes and the light intensity is modulated. Therefore, the liquid crystal display device 30 can obtain a useful light modulation function.
[0042]
A method for manufacturing the liquid crystal light modulation film 10 will be described. Note that components other than the liquid crystal light modulation film 10 of the liquid crystal modulator 22 can be manufactured by a normal manufacturing method, and a description thereof will be omitted.
[0043]
The liquid crystal light modulation film 10 can be formed to a desired thickness on the transparent electrode by a simple coating process.
[0044]
That is, first, a liquid mixture of the liquid crystal material 12 and the precursor material of the resin structure 14 is prepared. Next, this mixed solution is applied on the transparent electrode of one of the two transparent substrates to form a coating film. Further, the precursor material in the coating film is cured or precipitated. As a result, the resin structure 14 is dispersed in the liquid crystal material 12 by phase separation, and the liquid crystal light modulation film 10 in which the temperature dependency of the liquid crystal alignment is controlled is obtained.
[0045]
In the manufacturing method of the liquid crystal light modulation film 10 described above, the coating method can be a method such as roll coating, dipping, spin coating, casting, spraying, doctor blade coating, wire bar coating, and the like. A uniform coating film can be easily obtained.
[0046]
Further, as a method for curing the precursor material in the coating film, an appropriate polymerization method such as photopolymerization by ultraviolet irradiation, thermal polymerization by heating, and reaction polymerization can be used. As a method for curing and depositing the precursor material in the coating film, for example, a solvent evaporation method can also be used.
[0047]
Further, in the step of curing or precipitating the precursor material in the coating film and forming a phase-separated resin structure, the coating film is brought to a temperature that indicates a nematic phase or a smectic phase in an alignment state of liquid crystal molecules. It is desirable to control. Therefore, prior to the step of forming the phase-separated resin structure, the mixture may be heated to the above temperature in advance.
[0048]
The molecular orientation order of the liquid crystal (liquid crystal material 12) is affected by the orientation of the resin structure 14 together with the bulk characteristics of the liquid crystal material. This is because the liquid crystal adjacent to the resin structure 14 has an anchoring effect as an alignment regulating force due to the intermolecular interaction. As described above, by reducing the short-axis dimension of the resin structure 14 to 1 μm or less, the contact area between the surface of the resin structure 14 and the liquid crystal increases, and a better anchoring effect can be obtained.
[0049]
As a result, the liquid crystal material 12 and the resin structure 14 having the respective orientations are oriented, for example, in the same direction, and the orientation of the liquid crystal is regulated to control the temperature dependence of the liquid crystal.
[0050]
For this reason, the liquid crystal light modulation film 10 according to the present embodiment can reduce the change in the orientation of the liquid crystal that can normally occur due to the temperature change, even when the environmental temperature changes, It is possible to suppress the occurrence of alignment defects that cause discontinuous liquid crystal alignment. In addition, depending on the type of liquid material, the orientation of the liquid crystal is maintained even in a relatively high temperature region where the ambient temperature normally transitions from the original liquid crystal phase to the isotropic phase.
[0051]
Therefore, in the liquid crystal light modulator 28 using the liquid crystal light modulation film 10 according to the present embodiment, the temperature fluctuation of the display characteristics is small, and a stable light modulation operation can be obtained in a wide operating temperature range. .
[0052]
Further, the liquid crystal optical modulator 28 according to the present embodiment can easily adjust the operating temperature range to a desired condition by changing the degree of molecular orientation of the resin structure 14, the size, the dispersion density (dispersion rate), and the like. Can be controlled.
[0053]
In addition, in the liquid crystal light modulator 28 according to the present embodiment, when a backlight is further provided, a display device having a good contrast ratio can be configured. On the other hand, a reflection plate or a diffusion plate may be provided in place of the backlight, whereby a reflection type liquid crystal display device with low power consumption can be obtained. Further, a reflection plate or a diffusion plate may be used in combination with a backlight. In these cases, one of the transparent substrates or the transparent electrodes may be a non-transparent substrate or a metal electrode.
[0054]
【Example】
The present invention will be further described with reference to examples. The present invention is not limited to the embodiments described below.
[0055]
Using a ferroelectric liquid crystal having a refractive index anisotropy (Δn) of 0.15 and an ultraviolet-curable acrylic liquid crystal monomer (UCL-001 manufactured by Dainippon Ink Co., Ltd.) as materials, a liquid crystal light modulation film is formed by the following procedure. Produced.
[0056]
First, In ₂ O ₃ : Sn was formed into a film on each of _two transparent glass substrates by a sputtering method to form a transparent electrode having a thickness of 72 nm. Then, a polyimide resin (AL-1254 manufactured by JSR) was applied to a transparent electrode of one of the two transparent glass substrates by a spin coating method to form an alignment film having a thickness of 50 nm. Then, the alignment film was rubbed in one direction with a nylon brush.
[0057]
Next, a liquid mixture of the above ferroelectric liquid crystal and acrylic liquid crystal monomer was applied on the alignment film. At this time, the liquid mixture was used in which the content of the liquid crystal monomer was adjusted to 20% by mass, and further, a 2 μm spherical spacer was dispersed. Next, the other transparent glass substrate provided with an alignment film was overlaid so as to be in close contact with the mixed solution applied with the alignment film side facing. At this time, the rubbing directions of the two alignment films disposed opposite to each other with the applied mixed liquid therebetween were set to be antiparallel (parallel to each other in opposite directions).
[0058]
Furthermore, while heating the applied mixture at 75 ° C., ultraviolet rays having a central wavelength of 365 nm were irradiated at an intensity of 30 mW / cm ² .
[0059]
Observation with a polarizing microscope revealed that the obtained liquid crystal light modulating film had a network-like resin structure remarkably elongated in the rubbing direction, and the network-like resin structure was innumerable in a liquid crystal material oriented in the rubbing direction. Was confirmed to be dispersed. In this case, the minor axis of the resin structure was 100 nm. In addition, it was confirmed that a liquid crystal region in which the short-side dimension of the mesh of the resin structure, that is, the narrower dimension of the mesh was smaller than 1 μm, was generated. In addition, as a result of an experiment in which the irradiation intensity of the ultraviolet ray was changed separately, it was found that this dimension became smaller as the irradiation intensity increased.
[0060]
Next, the liquid crystal light modulating film of the above example was uniformly heated, and a phase transition phenomenon in which the liquid crystal material changed from a nematic phase to an isotropic phase was observed with a polarizing microscope. As a result, the liquid crystal molecules were located near the resin structure. It was confirmed that the higher the position of the resin structure and the higher the dispersion density of the resin structure, the more difficult the phase transition was, and the higher the phase transition temperature was.
[0061]
As a reference example, a liquid crystal light modulating film containing no resin structure was prepared using the same ferroelectric liquid crystal material as in the example, heated to 100 ° C., rapidly cooled to room temperature, and cooled to room temperature. And a cooling shock test for evaluating the characteristics of the liquid crystal light modulating film after quenching to −15 ° C., heating and returning to room temperature. As a result, it was confirmed that the alignment defects of the liquid crystal increased and the contrast ratio of the display significantly decreased.
[0062]
On the other hand, the liquid crystal light modulating film of the example was subjected to a thermal shock test and a cooling shock test in the same manner as described above. As a result, no increase in alignment defects was observed, and stable display characteristics were obtained. Was confirmed.
[0063]
【The invention's effect】
According to the method of manufacturing a liquid crystal light modulation film according to the present invention, the resin structure is dispersed in the liquid crystal material, and the liquid crystal material and the resin structure are each oriented in a certain direction, and the shape and dispersion state of the resin structure By controlling at least one of the alignment state and the alignment state, the temperature dependence of the liquid crystal alignment can be controlled, so that when used in a display device, a liquid crystal light modulation film with little change in display characteristics due to a temperature change is obtained. Can be. Further, a liquid crystal light modulation film having a wide operating temperature range can be obtained.
[0064]
Further, according to the liquid crystal light modulation film of the present invention, the resin structure is dispersed in the liquid crystal material, and the liquid crystal molecules and the resin structure of the liquid crystal material are respectively oriented in a certain direction. It has a shape, the short-axis dimension of the opening of the mesh is 1 μm or less, or the resin structure has a fiber shape, and the spacing between adjacent fibers is 1 μm or less. Obtainable.
[0065]
Further, according to the liquid crystal light modulator of the present invention, the liquid crystal light modulation film is sandwiched between a pair of alignment films and a pair of transparent substrates with transparent electrodes, so that The effect of the light modulation film can be suitably obtained.
[Brief description of the drawings]
FIG. 1 is a diagram showing a schematic configuration of a liquid crystal modulation film, a liquid crystal modulator, and a liquid crystal display device according to the present embodiment.
[Explanation of symbols]
Reference Signs List 10 liquid crystal light modulation film 12 liquid crystal material 14 resin structures 16a, 16b alignment films 18a, 18b transparent electrodes 20a, 20b transparent substrate 22 liquid crystal light modulators 24a, 24b polarizing plates 26a, 26b lead wires 28 power supply 30 liquid crystal display

Claims (8)

A resin structure is dispersed in a liquid crystal material, and the liquid crystal material and the resin structure are each oriented in a certain direction. At least one of the shape, the dispersion state, and the orientation state of the resin structure is changed A method for producing a liquid crystal light modulation film, wherein the temperature dependence of liquid crystal alignment is controlled by controlling the temperature. A step of mixing a liquid crystal material and a liquid crystalline monomer as a precursor of the resin structure to prepare a mixed solution,
A step of applying the mixed solution to a member to be laminated on which a liquid crystal light modulation film is to be laminated to form a coating film;
2. A method for producing a liquid crystal light modulation film according to claim 1, further comprising the step of curing or depositing a liquid crystalline monomer in the coating film to form a resin structure. 3. The liquid crystal according to claim 2, wherein the liquid mixture or the coating film is controlled to a temperature at which a liquid crystal phase exhibits a nematic phase or a smectic phase in the step of preparing the liquid mixture or the step of forming the resin structure. A method for manufacturing a light modulation film. A resin structure is dispersed in a liquid crystal material, and liquid crystal molecules of the liquid crystal material and the resin structure are each oriented in a certain direction,
A liquid crystal light modulation film, wherein the resin structure has a mesh shape, and includes a mesh portion having a mesh length of 1 μm or less on the short axis side. A resin structure is dispersed in a liquid crystal material, and liquid crystal molecules of the liquid crystal material and the resin structure are each oriented in a certain direction,
A liquid crystal light modulation film, wherein the resin structure has a fiber shape, and includes a fiber arrangement in which a spacing between adjacent fibers is 1 μm or less. 6. The liquid crystal light modulation film according to claim 4, wherein a dispersion ratio of the resin structure is 40% by mass or less. The liquid crystal light modulation film according to claim 4, wherein the resin structure is obtained by curing a liquid crystalline monomer as a precursor. 8. A liquid crystal light modulator comprising the liquid crystal light modulation film according to claim 4 sandwiched between a pair of alignment films and a pair of transparent substrates with transparent electrodes.

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