JP2016184065A - Color tone adjusting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To vary the color tone of transmission light variously in a structure in which the transmission light is controlled by shifting plates held facing each other.SOLUTION: A color tone adjusting device 1 includes first and second color tone adjusting plates 2 and 3 held facing each other. The first and second color tone adjusting plates 2 and 3 are formed by laminating transparent plate-shaped members 5A and 5B, linear polarizers 7A and 7B, and retardation layers 16A and 16B including a liquid crystal material. The retardation layers 16A and 16B of the first and second color tone adjusting plates 2 and 3 include first and second regions AA and BB whose slow axis directions are orthogonal to each other. The addition value of the phase difference between the retardation layer 16A of the first color tone adjusting plate 2 and the retardation layer 16B of the second color tone adjusting plate 3 is 120 nm or more and 550 nm or less, and the differential value of the phase difference therebetween is 10 nm or more and 215 nm or less.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a configuration for adjusting the color of transmitted light by changing the relative positions of plate members held so as to face each other.

  2. Description of the Related Art Conventionally, various devices for adjusting light by varying transmitted light by shifting the plate materials held so as to face each other and changing the relative positions of these plate materials have been proposed (Patent Documents 1 and 2). . In this type of apparatus, the plate material is configured by arranging a retardation layer on a linearly polarizing plate, and thus the amount of transmitted light can be varied by changing the relative position of the opposing plate material.

  By the way, in the configuration in which the transmitted light is controlled by shifting the plates held so as to face each other, if the color of the transmitted light can be changed, for example, it can be used for indoor partitioning, Depending on the purpose and the like, the color of the partition can be changed variously. As a result, the usability of this type of apparatus can be improved, and the scope of application can be further expanded.

JP 2013-92707 A JP-A-9-310567

  The present invention has been made in view of such a situation, and in a configuration in which transmitted light is controlled by shifting plate members held so as to face each other, the color of the transmitted light can be variously changed. The purpose is to.

  Specifically, the present invention provides the following.

(1) A tint adjusting device formed by holding the first and second tint adjusting plates so as to face each other,
The first and second color adjusting plate materials are:
It is formed by laminating a transparent plate member, a linearly polarizing plate, and a retardation layer made of a liquid crystal material,
The retardation layers of the first and second color adjusting plate materials are:
First and second regions where the slow axis directions are orthogonal are provided,
In the retardation layer of the first color adjustment plate material and the retardation layer of the second color adjustment plate material,
The added value of the phase difference is 120 nm or more and 550 nm or less,
A tint adjusting device having a difference value of phase difference of 10 nm or more and 215 nm or less.

  According to (1), in the first and second tint adjusting plate materials, a region where the first regions and the second regions overlap and a region where the first and second regions overlap are formed. The transmitted light is emitted to the linearly polarizing plate by the phase difference based on the addition value and the difference value of the phase differences of the first and second color adjusting plates, respectively. Here, the transmitted light due to the phase difference between the added value and the difference value changes its transmittance depending on the wavelength when passing through the linearly polarizing plate, and is emitted with a color. Further, this color tone is different between the phase difference due to the added value and the phase difference due to the difference value. Thereby, the area | region of a different tint can be produced by the overlap of the 1st and 2nd area | region, and a color is adjusted with several colors by adjustment of the overlap of the 1st and 2nd color adjustment board | plate material. be able to.

(2) In (1),
In the first and second color adjusting plate materials,
Each of the first and second regions is a belt-like region, and the color adjusting device is provided alternately one after another.

  According to (2), the color can be adjusted with a plurality of colors with a more specific configuration.

  According to the present invention, in a configuration in which transmitted light is controlled by shifting plate members held so as to face each other, the color of transmitted light can be variously changed.

It is sectional drawing which shows the color adjusting device which concerns on 1st Embodiment of this invention. It is a figure where it uses for description of the phase difference plate which concerns on the color adjustment apparatus of FIG. It is a figure where it uses for description of the color adjustment apparatus of FIG. It is a flowchart which shows the manufacturing process of the color adjustment apparatus of FIG.

[First Embodiment]
[Color adjustment device]
FIG. 1 is a cross-sectional view for explaining the tint adjusting apparatus according to the first embodiment of the present invention. The color adjusting device 1 is applied to, for example, an indoor partition or a building window, and is configured by holding a pair of color adjusting plates 2 and 3 so as to face each other. As shown by the arrow A, the color adjusting device 1 is arranged in the in-plane direction of the color adjusting plates 2 and 3, as will be described later, as shown by arrows A, in the relative positions of the color adjusting plates 2 and 3. By displacing the areas AA and BB in the repeating direction by the width of the band-shaped area AA or BB, the color of the transmitted light is changed with a plurality of kinds of colors.

  The tint adjusting device 1 is provided with a movable mechanism (not shown) such as a slide mechanism and a cam mechanism, and the tint adjusting plate 2 or 3 can be manually slid using the movable mechanism.

[Plates for color adjustment]
The color adjusting plate materials 2 and 3 are produced by sticking the color adjusting film materials 4A and 4B to the transparent plate-like members 5A and 5B via the adhesive layers 6A and 6B, respectively. The tint adjusting plates 2 and 3 are held opposite to each other so that the tint adjusting film materials 4A and 4B are inside.

  Here, the transparent plate-like members 5A and 5B are holding members that movably hold the color adjusting film materials 4A and 4B without damaging the incident light to the color adjusting film materials 4A and 4B. Various transparent plate materials applied to partitions, windows, etc. can be applied. More specifically, for example, a transparent acrylic plate, a transparent glass plate, or the like can be applied to the transparent plate-like members 5A and 5B, but in this embodiment, a transparent glass plate is applied. For the adhesive layers 6A and 6B, various adhesives applicable to holding this kind of film material can be applied, and instead of the adhesive, applicable to the lamination of this kind of member, for example, ultraviolet rays Various adhesive layers such as a curable resin may be applied.

[Color adjustment film material]
The color adjusting film materials 4A and 4B are configured by laminating linear polarizing plates 7A and 7B and retardation plates 9A and 9B via adhesive layers 8A and 8B, and the transparent plate members 5A and 5B are linearly polarized. It arrange | positions so that it may become board 7A, 7B.

[Linear polarizing plate]
The linear polarizing plates 7A and 7B are formed by sequentially arranging the optical functional layers 11A and 11B and the base materials 12A and 12B after one side of the base materials 10A and 10B made of a transparent film such as TAC (triacetyl cellulose) is saponified. Is done. The base materials 10A and 10B are replaced with methyl poly (meth) acrylate, poly (meth) butyl acrylate, methyl (meth) acrylate-butyl (meth) acrylate copolymer, (meth) acrylic acid. A resin such as an acrylic resin such as a methyl-styrene copolymer, a glass such as soda glass, potassium glass, lead glass, and quartz glass can be used.

  The optical functional layers 11A and 11B are portions having an optical function as a linear polarizing plate, and are produced by, for example, stretching and adsorbing iodine compound molecules on a film material of polyvinyl alcohol (PVA). The base materials 12A and 12B are formed of a transparent film material such as TAC. In the color adjusting device 1, the linearly polarizing plates 7A and 7B are arranged in a parallel Nicol arrangement. More specifically, the linearly polarizing plates 7A and 7B are formed in a rectangular shape, and are arranged so that one side of the rectangular shape is in the absorption axis direction.

[Phase difference plate]
As shown in FIG. 2, in the retardation plates 9A and 9B, alignment layers 15A and 15B and retardation layers 16A and 16B are sequentially provided on base materials 14A and 14B made of a transparent film. Here, the retardation layers 16A and 16B are made of a liquid crystal material, and are produced by solidifying (curing) the liquid crystal material in an aligned state by the alignment regulating force of the alignment layers 15A and 15B. In this embodiment, the color adjusting plates 2 and 3 are formed with the band-shaped regions AA and BB by patterning the orientation layers 15A and 15B.

  Here, the band-shaped regions AA and BB have a slow axis direction (indicated by an arrow in FIG. 2) with respect to the absorption axis direction of the linearly polarizing plates 7A and 7B, as viewed from the phase difference layers 16A and 16B side. They are formed so as to form an angle of 45 degrees counterclockwise and clockwise, respectively, so that the slow axis directions are orthogonal to each other.

  Further, on the premise that the phase difference layers 16A and 16B are arranged in this manner, the phase difference difference value of the phase difference layers 16A and 16B is further 10 nm so that the addition value of the phase differences of the phase difference layers 16A and 16B is 120 nm or more and 550 nm or less. The thickness is created so as to be 215 nm or less. Thus, the color adjusting device 1 is configured to change the color of the transmitted light by changing the relative positions of the color adjusting plates 2 and 3.

  That is, when the phase difference plates 9A and 9B are configured in this way, the color tone adjusting device 1 has a band-like region AA and a phase difference plate 9B (phase difference plate) as shown in FIG. In the region AR2 where the belt-like region BB of the layer 16B) overlaps, and in the region AR2 where the belt-like region BB of the retardation plate 9A and the belt-like region AA of the retardation plate 9B overlap, the retardation layers 16A and 16B have the same slow axis direction. By doing so, the phase difference provided by the phase difference layer 16A to the phase difference provided to the incident light from the linear polarization plate 7A is added to the phase difference layer 16B, and the phase difference layer 16A is added to the linear polarization plate 7B. 16B transmitted light is incident. Accordingly, in this embodiment, the added value of the phase difference in the phase difference layers 16A and 16B is set to the above-described condition, so that the transmitted light of the phase difference plates 9A and 9B is incident on the linearly polarizing plate 7A by elliptically polarized light. Will do.

  Since the retardation layers 16A and 16B applied to this kind of retardation plates 9A and 9B have wavelength division characteristics, the transmitted light by the elliptically polarized light of the retardation layers 16A and 16B depends on the wavelength. As a result, the ellipticity changes. Thereby, the emitted light of the linearly polarizing plate 7B is emitted with a tint.

  On the other hand, in the area AR1 where the band-like area AA of the phase difference plate 9A and the band-like area AA of the phase difference plate 9B overlap, and in the area AR1 where the band-like area BB of the phase difference plate 9A overlaps with the band-like area BB of the phase difference plate 9B. Since the slow axis directions in the phase difference layers 16A and 16B are orthogonal, the phase difference imparted by the phase difference layer 16A to the incident light from the linearly polarizing plate 7A becomes the phase difference due to the phase difference layer 16B. Is canceled by the light and enters the linearly polarizing plate 7B. Thereby, in this embodiment, since the difference value of the phase difference in the phase difference layers 16A and 16B is set to the above-described condition, even in the transmitted light of this area AR1, it is applied to the linearly polarizing plate 7B by elliptically polarized light. As a result, the light transmitted through the linearly polarizing plate 7B is colored.

  Further, the incident light of the linearly polarizing plate 7B in the area AR1 is different from the incident light of the linearly polarizing plate 7B in the area AR2 in the change in ellipticity depending on the wavelength, and thus the area AR1 is different from the area AR2. Depending on the color, the light transmitted through the linearly polarizing plate 7B is colored.

  As a result, the color adjustment device 1 changes the relative positions of the color adjustment plates 2 and 3 to change the widths of the areas AR1 and AR2 having different colors in a complementary manner, thereby changing the color of the entire transmitted light. The taste can be changed in a plurality of colors related to the areas AR1 and AR2.

  In this case, the retardation layers 16A and 16B may be made of the same material so as to have the same wavelength division characteristics, or may be made of different materials so as to have different wavelength dispersion characteristics. Also good.

[Detailed configuration of retardation plate]
In the retardation films 9A and 9B, a transparent film material such as TAC (triacetyl cellulose) is applied to the base materials 14A and 14B. In addition, the phase difference layers 16A and 16B may be transferred to the base material 10A of the linearly polarizing plates 7A and 7B by a transfer method to constitute a color adjusting plate material. In this case, the base materials 14A and 14B may be omitted. it can. The transfer method refers to, for example, when a desired layer is formed on a base material, the layer is not directly formed on the base material, but can be peeled once on a releasable support. After forming the transfer body by laminating the layers, the layer formed on the support is finally placed on the substrate (transfer base material) on which the layer is to be laminated according to the process, demand, etc. In this method, a desired layer is formed on the substrate by bonding and laminating, and then peeling and removing the support.

  The alignment layers 15A and 15B are configured by a photo-alignment layer, and the band regions corresponding to the band regions AA and BB of the retardation layers 16A and 16B are alternately created corresponding to the band regions AA and BB of the retardation film. In the retardation layers 16A and 16B, the liquid crystal material is oriented and cured in the direction of the orientation regulating force of the band-like regions provided in the orientation layers 15A and 15B, so that the direction of the orientation regulating force is the slow axis direction. The optical anisotropy is developed so that the band-shaped areas AA and BB are produced. The alignment layers 15A and 15B may be manufactured by a rubbing process instead of the photo-alignment layer, or may be manufactured by transferring a fine uneven shape by the rubbing process by a shaping process.

  More specifically, various materials to which a photo-alignment technique can be applied can be applied to the alignment layers 15A and 15B. For example, a photodimerization type material or an isomerization material can be applied. This light dimerization type material is described in “M. Schadt, K. Schmitt, V. Kozinkov and V. Chigrinov: Jpn. J. Appl. Phys., 31, 2155 (1992)”, “M. Schadt, H. Seiberle and A. Schuster: Nature, 381, 212 (1996). As the isomerization material, the configuration disclosed in Japanese Patent No. 5170468, International Publication No. WO13 / 191251, International Publication No. WO14 / 010688 can be applied.

  Various polymerizable liquid crystal compositions which are liquid crystal materials exhibiting optical anisotropy can be applied to the retardation layers 16A and 16B. Here, the polymerizable liquid crystal composition exhibits liquid crystallinity and can contain an antiblocking agent or the like in addition to a liquid crystal compound having a polymerizable functional group in the molecule (hereinafter also referred to as “rod-like compound”). .

  The rod-shaped compounds related to the retardation layers 16A and 16B have refractive index anisotropy, and have a function of imparting desired retardation by regularly arranging them by the alignment regulating force of the alignment layers 15A and 15B. . Examples of the rod-like compound include materials exhibiting a liquid crystal phase such as a nematic phase and a smectic phase, but the nematic phase is easier to arrange regularly than liquid crystal compounds exhibiting other liquid crystal phases. It is more preferable to use the rod-shaped compound shown.

  Specific examples of the rod-shaped compound used in the present embodiment include compounds represented by the following formulas (1) to (13), and these compounds can be polymerized and used.

〔Manufacturing process〕
FIG. 4 is a flowchart showing the manufacturing process of the color adjusting device. In the color adjusting device 1, the color adjusting film materials 4A and 4B are manufactured by the color adjusting film material manufacturing process, and in the bonding step SP7 with the transparent plate member, the color adjusting film material 4A, 4B is bonded to the transparent plate-like members 5A and 5B to produce the color adjusting plate materials 2 and 3. Thereafter, in the assembling step SP8, the tint adjusting plates 2 and 3 are processed into a desired shape and are held by a holding mechanism having a movable mechanism, whereby the tint adjusting device 1 is manufactured.

  In the color adjusting film material manufacturing process, in the coating process SP2, the coating liquid related to the photo-alignment layer is applied to the substrates 12A and 12B, and then dried to produce a material layer for the photo-alignment layer. Subsequently, in the pattern exposure step SP3, after irradiating linearly polarized ultraviolet rays in a state where the portion corresponding to the region BB is masked, the entire surface is irradiated with ultraviolet rays having a polarization plane in a direction orthogonal thereto, thereby the alignment layer 15A, 15B is produced.

  Subsequently, in the coating process SP4 related to the retardation layers 16A and 16B, after coating the coating liquid related to the retardation layers 16A and 16B, the coating liquid is dried, and in the subsequent curing process SP5, it is cured by irradiation with ultraviolet rays. Thus, the retardation layers 16A and 16B are produced. The film material production process for color adjustment is a film for color adjustment by attaching phase difference plates 9A and 9B to linear polarizing plates 7A and 7B created in a separate process in the subsequent bonding step SP6 with the linear polarizing plate. Materials 4A and 4B are produced.

[Example 1]
A TAC film material having a length of 1 m, a width of 115 cm, and a thickness of 80 μm was applied to the base material, and a polymerizable cinnamate-based photoalignment material was laminated on one side of the base material, thereby producing a material layer of the photoalignment layer. Using a mask provided with a 50 mm wide opening and a light-shielding portion of the same width, after irradiating with ultraviolet rays by linearly polarized light having a vibration direction of 45 ° with respect to the longitudinal direction of the substrate, a straight line having a vibration direction of 135 ° The entire surface was irradiated with polarized ultraviolet rays, thereby producing an alignment layer.

  A dry thickness of 1.2 μm of the coating liquid made of a composition comprising a polymerizable rod-like liquid crystal, MIBK, and a photoinitiator according to the following chemical formula is applied to the thus-produced substrate and alignment layer. After coating and drying as described above, polymerization was performed by irradiation with non-polarized ultraviolet rays to produce a retardation layer, thereby producing a first retardation plate. The phase difference of the obtained retardation layer is. It was 163 nm.

  Similarly, a retardation layer is prepared by applying a coating solution for the retardation layer so that the dry thickness of the liquid crystal layer is 2.43 μm on the laminate of the base material and the alignment layer. 2 retardation plates were produced. The retardation of the obtained retardation layer was 326 nm.

  A linear polarizing plate having the same size as the base material of the retardation plate and having the absorption axis direction as the longitudinal direction is bonded to the first retardation plate so that the longitudinal directions thereof coincide with each other. A plate for adjusting color was prepared. In addition, a linear polarizing plate having the same size as the base material of the retardation plate and having a longitudinal absorption axis direction is bonded to the second retardation plate so that the longitudinal directions thereof coincide with each other. A plate for adjusting color was prepared.

  When the first and second color adjusting plates are stacked and the color is observed, the region where the slow axis directions coincide with each other in the two retardation plates is observed in yellow, and the two retardation plates are observed. The region where the slow axis directions are orthogonal is observed with a blue color, thereby changing the relative positions of the two color adjustment plates so that the widths of the yellowish region and the blueish region are complementary. It was confirmed that the color of the transmitted light can be adjusted with the yellow color and the blue color.

[Example 2]
In the same manner as in Example 1, after preparing a laminate of a base material and an alignment layer, a coating solution for a retardation layer was applied with the same material as in Example 1 so that the dry thickness of the liquid crystal layer was 1 μm. Thus, a retardation layer was produced, and a first retardation plate was produced. The retardation of the obtained retardation layer was 125 nm. Similarly, the retardation layer is prepared by coating the retardation layer coating solution so that the dry thickness of the liquid crystal layer is 2 μm using the same material as in Example 1, and the second retardation plate is formed. Produced. The retardation of the obtained retardation layer was 250 nm.

  In the same manner as in Example 1, the first and second retardation plates were laminated with linear polarizing plates to produce first and second color adjusting plate materials, and the color was observed. In this example, the region where the slow axis directions coincide with each other in the two retardation plates is observed in yellow, and the region where the slow axis directions are orthogonal in the two retardation plates is observed in green. By changing the relative positions of the two color adjustment plates, the widths of the yellowish area and the greenish area are changed in a complementary manner, and the transmitted light color is changed between yellow and green. It was confirmed that it can be adjusted with the color.

[Comparative Example]
After preparing a laminate of the base material and the alignment layer in the same manner as in Example 1, the coating solution for the retardation layer was applied using the same material as in Example 1 so that the dry thickness of the liquid crystal layer was 1.2 μm. The retardation layer was produced by processing, and the first and second retardation plates were produced. The retardation of the obtained retardation layer was 163 nm.

  In the same manner as in Example 1, the first and second retardation plates were respectively laminated with a linear polarizing plate to produce first and second color adjusting plate materials, and the color was observed. In this comparative example, the region where the slow axis directions coincide with each other in the two retardation plates is observed without any color, and the region where the slow axis directions are orthogonal between the two retardation plates is blue. Observed. As a result, it was confirmed that in this comparative example, the relative position of the color adjusting plate was simply changed to adjust the degree (range) of the blue color, and the color could not be adjusted with a plurality of colors.

[Other Embodiments]
As mentioned above, although the specific structure suitable for implementation of this invention was explained in full detail, this invention can variously change the structure of the above-mentioned embodiment in the range which does not deviate from the meaning of this invention.

  That is, in the above-described embodiment, the case where the liquid crystal material is solidified by the alignment regulating force of the alignment layer to produce the retardation layer has been described. By applying a polymer, the liquid crystal material may be directly solidified in an aligned state and an unaligned state to produce a retardation layer, and the alignment layer may be omitted.

  Further, in the above-described embodiment, the case where the regions where the phase differences are orthogonally formed by the belt-like regions is described alternately, but the present invention is not limited to this, and may be created in a checkered pattern, and various shapes Thus, these regions can be provided.

1 Color adjustment device
2, 3 Color adjustment plate
4A, 4B Color adjustment film material 5A, 5B Transparent plate-like member 6A, 6B Adhesive layer 7A, 7B Linear polarizing plate 8A, 8B Adhesive layer 9A, 9B Phase difference plate 10A, 10B Base material 11A, 11B Optical function Layer 12A, 12B, 14A, 14B Base material 15A, 15B Alignment layer 16A, 16B Retardation layer

Claims (2)

A tint adjusting device formed by holding the first and second tint adjusting plates so as to face each other,
The first and second color adjusting plate materials are:
It is formed by laminating a transparent plate member, a linearly polarizing plate, and a retardation layer made of a liquid crystal material,
The retardation layers of the first and second color adjusting plate materials are:
First and second regions where the slow axis directions are orthogonal are provided,
In the retardation layer of the first color adjustment plate material and the retardation layer of the second color adjustment plate material,
The added value of the phase difference is 120 nm or more and 550 nm or less,
A hue adjusting device having a phase difference value of 10 nm or more and 215 nm or less. In the first and second color adjusting plate materials,
The color adjusting device according to claim 1, wherein each of the first and second regions is a belt-like region and is provided alternately in order.

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