JP2018105055A - Light control member - Google Patents
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Abstract
Description
本発明は調光部材に関する。 The present invention relates to a light control member.
従来、例えば窓に貼り付けて外来光の透過を制御する調光部材に関する工夫が種々に提案されている（特許文献１、２）。このような調光部材の１つに、液晶を利用したものがある。液晶を利用した調光部材は、透明電極を作製した透明基材によって液晶層を挟持して液晶セルが作製され、この液晶セルを直線偏光板により挟持して作成される。そして、液晶に印加する電界を変化させることにより液晶の配向を変化させて外来光の透過が制御される。
このような調光部材は、液晶層に二色性色素を加えて、ゲストホスト方式により駆動してもよく、この場合、直線偏光板は省略することが可能である。
Conventionally, various devices relating to a light control member that is attached to a window and controls transmission of external light have been proposed (Patent Documents 1 and 2). One such light control member uses liquid crystal. A light control member using liquid crystal is prepared by sandwiching a liquid crystal layer with a transparent base material on which a transparent electrode is fabricated, and then sandwiching the liquid crystal cell with a linear polarizing plate. Then, by changing the electric field applied to the liquid crystal, the alignment of the liquid crystal is changed to control the transmission of extraneous light.
Such a light control member may be driven by a guest-host method by adding a dichroic dye to the liquid crystal layer. In this case, the linear polarizing plate can be omitted.
しかし、ゲストホスト方式を採用して直線偏光板を省略すると、液晶層には直線偏光板を介さずに外光が入射する。そうすると、液晶を配向させる配向膜、液晶及び／又は二色性色素が劣化する可能性がある。
本発明は、配向膜、液晶及び／又は二色性色素等の劣化が生じにくい調光部材を提供することを目的とする。
However, when the guest-host method is adopted and the linear polarizing plate is omitted, external light enters the liquid crystal layer without passing through the linear polarizing plate. If it does so, the alignment film, liquid crystal, and / or dichroic dye which orientate a liquid crystal may deteriorate.
It is an object of the present invention to provide a light control member that hardly causes deterioration of an alignment film, a liquid crystal, and / or a dichroic dye.
上記課題を解決するために、本発明は以下のものを提供する。
（１） 第１透明電極と、第２透明電極と、液晶材料及び二色性色素を含み、前記第１透明電極と前記第２透明電極との間の電位差によって光の透過率が変動する液晶層と、前記液晶層の少なくとも一方の側に配置され、且つ紫外線を吸収する透明基材と、を含む調光部材。
In order to solve the above problems, the present invention provides the following.
(1) A liquid crystal that includes a first transparent electrode, a second transparent electrode, a liquid crystal material, and a dichroic dye, and whose light transmittance varies depending on a potential difference between the first transparent electrode and the second transparent electrode. A light control member comprising: a layer; and a transparent substrate disposed on at least one side of the liquid crystal layer and absorbing ultraviolet rays.
（２） （１）において、前記透明基材が、芳香族ポリエステル材料で形成されている調光部材。 (2) The light control member according to (1), wherein the transparent substrate is formed of an aromatic polyester material.
（３） （１）または（２）において、前記透明基材が、３１３ｎｍの紫外線を吸収する調光部材。 (3) The light control member in which the transparent base material absorbs ultraviolet rays of 313 nm in (1) or (2).
（４） （１）から（３）のいずれかにおいて、前記液晶層には、該液晶層の間隔を規定する、光硬化型樹脂で製造されたスペーサが設けられ、前記透明基材は、前記光硬化型樹脂を硬化させる紫外線を透過する調光部材。 (4) In any one of (1) to (3), the liquid crystal layer is provided with a spacer made of a photocurable resin that defines an interval between the liquid crystal layers. A light-modulating member that transmits ultraviolet light that cures the photocurable resin.
（５） （１）から（４）のいずれかにおいて、前記透明基材が、ポリエチレンテレフタレートで製造されている調光部材。 (5) The light control member according to any one of (1) to (4), wherein the transparent substrate is made of polyethylene terephthalate.
（６） （１）または（２）において、前記透明基材が、ポリエチレンナフタレートで製造されている調光部材。 (6) The light control member according to (1) or (2), wherein the transparent substrate is made of polyethylene naphthalate.
（７） （１）から（６）のいずれかにおいて、前記第１透明電極又は前記第２透明電極は、前記透明基材に形成されている調光部材。 (7) In any one of (1) to (6), the first transparent electrode or the second transparent electrode is a light control member formed on the transparent substrate.
（８） （１）から（６）のいずれかにおいて、前記透明基材は、記第１透明電極又は前記第２透明電極が形成された基材よりも外側に配置されている調光部材。 (8) The light control member according to any one of (1) to (6), wherein the transparent base material is disposed outside the base material on which the first transparent electrode or the second transparent electrode is formed.
（９） （１）から（８）のいずれかにおいて、前記透明基材よりも外側に防湿層を備える調光部材。 (9) The light control member according to any one of (1) to (8), wherein a moisture-proof layer is provided outside the transparent base material.
（１０） （１）から（９）のいずれかにおいて、前記透明基材よりも外側に赤外線カットフィルムを備える調光部材。 (10) The light control member according to any one of (1) to (9), further including an infrared cut film outside the transparent substrate.
本発明によると、配向膜、液晶及び／又は二色性色素等の劣化が生じにくい調光部材を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the light modulation member which cannot produce deterioration of an alignment film, a liquid crystal, and / or a dichroic dye etc. can be provided.
（調光部材の構成）
図１は、本発明の第１実施形態に係る調光部材１を示す断面図である。調光部材１は、例えば、建築物の窓ガラス、ショーケース、屋内の透明パーテーション、車両のサンルーフ等の調光を図る部位に、粘着剤層等により貼り付けて使用され、電圧を変化させて透過光を制御する。
(Configuration of light control member)
FIG. 1 is a cross-sectional view showing a light control member 1 according to a first embodiment of the present invention. The dimming member 1 is used, for example, by adhering it to an area to be dimmed, such as a window glass of a building, a showcase, an indoor transparent partition, a sunroof of a vehicle, etc. with an adhesive layer, etc. Control the transmitted light.
調光部材１は、フィルム状の第１積層体５Ｄと第２積層体５Ｕとで液晶層８を挟持し、液晶層８への電界を変化させて透過光を制御するゲストホスト方式による調光部材１である。
第１積層体５Ｄは、透明フィルム材である第１透明基材６に、第１透明電極１１、スペーサ１２及び第１配向膜１３が配置されて形成されている。第２積層体５Ｕは、透明フィルム材である第２透明基材１５に、第２透明電極１６及び第２配向膜１７が配置されて形成されている。
第２積層体５Ｕ及び第１積層体５Ｄに設けられた第１透明電極１１及び第２透明電極１６の駆動により、液晶層８内の電界の強さが変化する。
The dimming member 1 is a guest-host dimming method in which the liquid crystal layer 8 is sandwiched between the film-like first laminate 5D and the second laminate 5U, and the transmitted light is controlled by changing the electric field applied to the liquid crystal layer 8. Member 1.
The first laminate 5D is formed by arranging a first transparent electrode 11, a spacer 12, and a first alignment film 13 on a first transparent substrate 6 that is a transparent film material. The second laminated body 5U is formed by arranging the second transparent electrode 16 and the second alignment film 17 on the second transparent base material 15 which is a transparent film material.
By driving the first transparent electrode 11 and the second transparent electrode 16 provided in the second stacked body 5U and the first stacked body 5D, the strength of the electric field in the liquid crystal layer 8 changes.
（基材）
第１透明基材６及び第２透明基材１５については、後に説明する。
(Base material)
The first transparent substrate 6 and the second transparent substrate 15 will be described later.
（透明電極）
第１透明電極１１及び第２透明電極１６は、この種のフィルム材に適用される各種の電極材料を適用することができ、本実施形態ではＩＴＯ（Ｉｎｄｉｕｍ Ｔｉｎ Ｏｘｉｄｅ）による透明電極材により形成される。
(Transparent electrode)
Various electrode materials applied to this kind of film material can be applied to the first transparent electrode 11 and the second transparent electrode 16, and in this embodiment, the first transparent electrode 11 and the second transparent electrode 16 are formed of a transparent electrode material made of ITO (Indium Tin Oxide). The
（スペーサ）
スペーサ１２は、液晶層８の厚みを規定するために設けられ、各種の樹脂材料を広く適用することができるが、本実施形態ではフォトレジストにより作製され、第１透明電極１１が作製された第１透明基材６の上に、フォトレジストを塗工して露光、現像することにより作製される。
なおスペーサ１２は、第２積層体５Ｕに設けてもよく、第２積層体５Ｕ及び第１積層体５Ｄの双方に設けてもよい。またスペーサ１２は、いわゆるビーズスペーサを適用してもよい。
(Spacer)
The spacer 12 is provided to regulate the thickness of the liquid crystal layer 8 and various resin materials can be widely applied. In this embodiment, the spacer 12 is made of a photoresist, and the first transparent electrode 11 is made. 1 It is produced by applying a photoresist on a transparent substrate 6, exposing and developing.
The spacer 12 may be provided in the second stacked body 5U, or may be provided in both the second stacked body 5U and the first stacked body 5D. The spacer 12 may be a so-called bead spacer.
（配向膜）
第１配向膜１３及び第２配向膜１７は、液晶層８に係る液晶材料に対して配向規制力を発現可能な各種の構成を適用することができる。本実施形態では光配向膜により作製するが、ラビング処理、研磨処理による微細なライン状凹凸形状を賦型処理により作製して形成してもよい。
(Alignment film)
For the first alignment film 13 and the second alignment film 17, various configurations capable of expressing the alignment regulating force with respect to the liquid crystal material related to the liquid crystal layer 8 can be applied. In this embodiment, it is produced by a photo-alignment film, but a fine line-shaped uneven shape by rubbing treatment or polishing treatment may be produced by forming treatment.
光配向膜である第１配向膜１３及び第２配向膜１７は、直線偏光紫外線を高分子膜上に照射することによって、偏光方向の高分子鎖を選択的に反応させ、これによって異方性を発生させて液晶配向能を付与することにより形成される。
光配向膜の場合、光配向の手法を適用可能な各種の材料を適用することができるが、本実施形態では二量化型の材料を適用する。この光二量化型の材料については、「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）」等に開示されている。
The first alignment film 13 and the second alignment film 17 that are photo-alignment films selectively react with the polymer chains in the polarization direction by irradiating the linearly polarized ultraviolet rays onto the polymer film, thereby anisotropy. Is formed by imparting liquid crystal alignment ability.
In the case of a photo-alignment film, various materials to which a photo-alignment technique can be applied can be applied. In this embodiment, a dimerization-type material is applied. The photodimerization 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).
（シール材）
調光部材１は、液晶層８を囲むように、シール材１９が配置され、このシール材１９により第２積層体５Ｕ、第１積層体５Ｄが一体に保持され、液晶材料の漏出が防止される。
シール材１９は、本実施形態では光硬化型の材料を用いる。本実施形態において光硬化型の材料は、３２０ｎｍ程度より大きい波長の紫外線で硬化する。
(Seal material)
In the light control member 1, a sealing material 19 is disposed so as to surround the liquid crystal layer 8, and the second stacked body 5 </ b> U and the first stacked body 5 </ b> D are integrally held by the sealing material 19, and leakage of the liquid crystal material is prevented. The
In the present embodiment, the sealing material 19 is a photo-curing material. In the present embodiment, the photocurable material is cured by ultraviolet rays having a wavelength greater than about 320 nm.
（液晶層）
液晶層８は、液晶材料と二色性色素とを含みゲストホスト方式で駆動される。
（液晶材料）
液晶材料は、例えばネマティック液晶が用いられる。
（二色性色素）
二色性色素は、分子の長軸方向における吸光度と、短軸方向における吸光度とが異なる色素である。調光部材１に印加される電圧の変化によって、液晶分子の配向状態が変化すると、液晶分子の配向状態の変化に応じて二色性色素の配向状態も変化する。
(Liquid crystal layer)
The liquid crystal layer 8 includes a liquid crystal material and a dichroic dye and is driven by a guest-host method.
(Liquid crystal material)
As the liquid crystal material, for example, nematic liquid crystal is used.
(Dichroic dye)
A dichroic dye is a dye in which the absorbance in the major axis direction of the molecule is different from the absorbance in the minor axis direction. When the alignment state of the liquid crystal molecules changes due to a change in the voltage applied to the light control member 1, the alignment state of the dichroic dye also changes according to the change in the alignment state of the liquid crystal molecules.
このようにゲストホスト方式により調光材を作製する場合には、直線偏光板を省略することが可能となる。このため、本実施形態では直線偏光板は配置されていない。しかし、直線偏光板が配置されずに液晶層８に外光が直接到達すると、外光に含まれる紫外線により液晶層８等が劣化し、また、シール材１９を硬化させる紫外線によっても液晶層８等が劣化してしまう可能性がある。 Thus, when producing a light control material by a guest host system, it becomes possible to abbreviate | omit a linearly-polarizing plate. For this reason, the linearly polarizing plate is not arranged in this embodiment. However, when the external light directly reaches the liquid crystal layer 8 without the linearly polarizing plate being disposed, the liquid crystal layer 8 and the like are deteriorated by the ultraviolet light included in the external light, and the liquid crystal layer 8 is also irradiated by the ultraviolet light that cures the sealing material 19. Etc. may deteriorate.
そこで、本実施形態では液晶層８を挟持する第１積層体５Ｄの第１透明基材６と、第２積層体５Ｕの第２透明基材１５とを、紫外線を吸収する材料で製造する。
紫外線を吸収する材料としては、例えば芳香族ポリエステル材料あり、本実施形態では、その中のＰＥＴ（ポリエチレンテレフタレート）を用いる。
なお、本実施形態では、第１積層体５Ｄの第１透明基材６と、第２積層体５Ｕの第２透明基材１５とを、紫外線を吸収する材料で製造するが、これに限らない。例えば、調光部材１を、建築物の窓ガラス、ショーケース、屋内の透明パーテーション、車両のサンルーフ等に貼着する場合、第１透明基材６と第２透明基材１５とのうちの、内側となる透明基材は必ずしも紫外線を吸収する材料で製造されていなくてもよい。
Therefore, in the present embodiment, the first transparent substrate 6 of the first stacked body 5D that sandwiches the liquid crystal layer 8 and the second transparent substrate 15 of the second stacked body 5U are manufactured using a material that absorbs ultraviolet rays.
Examples of the material that absorbs ultraviolet rays include aromatic polyester materials. In the present embodiment, PET (polyethylene terephthalate) is used.
In the present embodiment, the first transparent substrate 6 of the first stacked body 5D and the second transparent substrate 15 of the second stacked body 5U are manufactured using a material that absorbs ultraviolet rays, but the present invention is not limited thereto. . For example, when sticking the light control member 1 to a window glass of a building, a showcase, an indoor transparent partition, a sunroof of a vehicle, etc., among the first transparent base material 6 and the second transparent base material 15, The transparent base material which becomes the inner side does not necessarily have to be made of a material that absorbs ultraviolet rays.
図２はＰＥＴの吸収スペクトルを示す図である。ＰＥＴは、３５０ｎｍ付近より波長が短くなるほど透過率が低下し、特に３２０ｎｍ以下の光は、透過率がほぼ０％である。
したがって、本実施形態のようにＰＥＴを用いると、少なくとも３２０ｎｍ以下の紫外線はＰＥＴで吸収される。そうすると、３２０ｎｍ以下の光は、配向膜１７，１３、液晶層８（液晶分子、二色性色素）及びシール材１９に到達しない。
しかし、シール材１９は、本実施形態において上述のように３２０ｎｍ以上の紫外線で硬化するので、ＰＥＴを透過した光であっても、シール材１９を硬化することができる。
FIG. 2 is a diagram showing an absorption spectrum of PET. The transmittance of PET decreases as the wavelength becomes shorter than around 350 nm. In particular, the transmittance of light of 320 nm or less is almost 0%.
Therefore, when PET is used as in this embodiment, ultraviolet rays of at least 320 nm or less are absorbed by PET. Then, the light of 320 nm or less does not reach the alignment films 17 and 13, the liquid crystal layer 8 (liquid crystal molecules and dichroic dye), and the sealing material 19.
However, since the sealing material 19 is cured with ultraviolet rays of 320 nm or more in the present embodiment as described above, the sealing material 19 can be cured even with light transmitted through PET.
なお、本実施形態では、シール材１９は光硬化型樹脂を用いたがこれに限定されず、熱硬化型の樹脂を用いても良い。その場合、例えば３２０ｎｍより長い波長のシール材１９の硬化用の紫外線も吸収するようなＰＥＮ（ポリエチレンナフタレート）を第１透明基材６や第２透明基材１５に用いることができる。ＰＥＮを用いると、ＰＥＴの３２０ｎｍ程度より波長の長い紫外線も吸収するので、より紫外線吸収効果が高い。 In this embodiment, the sealing material 19 is a photo-curing resin, but is not limited to this, and a thermosetting resin may be used. In that case, for example, PEN (polyethylene naphthalate) that absorbs ultraviolet rays for curing the sealing material 19 having a wavelength longer than 320 nm can be used for the first transparent substrate 6 and the second transparent substrate 15. When PEN is used, ultraviolet rays having a wavelength longer than about 320 nm of PET are absorbed, so that the ultraviolet absorption effect is higher.
本実施形態によると以下の効果を有する。
（１）まず、比較形態として、第１積層体５Ｄの第１透明基材６と、第２積層体５Ｕの第２透明基材１５とが、ＰＥＴやＰＥＮ以外の、例えば、波長が３２０ｎｍ以下において透過率が減少しない基材である場合について説明する。
この比較形態の場合、３２０ｎｍ以下の波長の短い光も、光配向膜である第１配向膜１３及び第２配向膜１７に到達する。したがって、これらの光配向膜である第１配向膜１３及び第２配向膜１７が劣化する可能性がある。
光配向膜は上述のように、紫外線を高分子膜上に照射することによって、偏光方向の高分子鎖を選択的に反応させ、これによって異方性を発生させて液晶配向能を付与する。本実施形態のように二量化型の材料を適用すると、配向した後においては、紫外線の照射によって比較的配向が変化しにくい。しかし、特に波長の短い紫外線が照射されつづけると、光配向膜が劣化する可能性がある。光配向膜が劣化すると、液晶分子が配向しにくくなるので、液晶分子が電界をかけても倒れなくなる可能性がある。
しかし、本実施形態では特に波長の短い紫外線を遮断することができるので、光配向膜である第１配向膜１３及び第２配向膜１７の劣化が低減される。
The present embodiment has the following effects.
(1) First, as a comparative form, the first transparent substrate 6 of the first laminate 5D and the second transparent substrate 15 of the second laminate 5U are other than PET or PEN, for example, the wavelength is 320 nm or less. The case where the substrate is a substrate whose transmittance does not decrease will be described.
In the case of this comparative form, light having a wavelength of 320 nm or less also reaches the first alignment film 13 and the second alignment film 17 that are photo-alignment films. Therefore, there is a possibility that the first alignment film 13 and the second alignment film 17 which are these photo-alignment films deteriorate.
As described above, the photo-alignment film irradiates the polymer film with ultraviolet rays to selectively react the polymer chains in the polarization direction, thereby generating anisotropy and imparting liquid crystal alignment ability. When a dimerization-type material is applied as in this embodiment, the orientation is relatively difficult to change by the irradiation of ultraviolet rays after the orientation. However, the photo-alignment film may be deteriorated particularly when ultraviolet rays having a short wavelength are continuously irradiated. When the photo-alignment film is deteriorated, the liquid crystal molecules are difficult to align, so that the liquid crystal molecules may not fall down even when an electric field is applied.
However, in this embodiment, since ultraviolet rays having a particularly short wavelength can be blocked, deterioration of the first alignment film 13 and the second alignment film 17 that are photo-alignment films is reduced.
（２）また、液晶層８も、紫外線が照射されると、液晶分子に分解等が生じて劣化する可能性がある。しかし、本実施形態では特に波長の短い紫外線を遮断することができるので、液晶の劣化が低減される。 (2) Further, when the liquid crystal layer 8 is irradiated with ultraviolet rays, the liquid crystal molecules may be degraded due to decomposition or the like. However, in this embodiment, since ultraviolet rays having a particularly short wavelength can be blocked, deterioration of the liquid crystal is reduced.
（３）二色性色素も、紫外線が照射されると劣化する可能性がある。しかし本実施形態では特に波長の短い紫外線を遮断することができるので、二色性色素の劣化が低減される。 (3) Dichroic dyes may also deteriorate when irradiated with ultraviolet rays. However, in this embodiment, since ultraviolet rays having a particularly short wavelength can be blocked, deterioration of the dichroic dye is reduced.
（実施例１）
図３（ａ）は、実際にＰＥＴ製の第１透明基材６及び第２透明基材１５を用いて製造した本実施形態の調光部材１において、図示する点線領域Ｓに紫外線を照射し、その後、第１透明電極１１及び第２透明電極１６間の電圧を調整して液晶層８の透過率を最小にした状態（もっとも暗い状態）の画像である。紫外線は３１３ｎｍ及び３６５ｎｍにピークを持つ高圧水銀ランプを用いて５００ｍＪの強さで照射した。
図示するように、紫外線を照射した部分と他の部分とにおいて透過率の差は見られず、全体的に均一な黒さを示した。すなわち、調光部材１の外観に劣化は見られなかった。
Example 1
FIG. 3A shows a case where the dotted line region S shown in the figure is irradiated with ultraviolet rays in the light control member 1 of the present embodiment actually manufactured using the first transparent base material 6 and the second transparent base material 15 made of PET. Thereafter, the image is in a state (darkest state) in which the voltage between the first transparent electrode 11 and the second transparent electrode 16 is adjusted to minimize the transmittance of the liquid crystal layer 8. Ultraviolet rays were irradiated at an intensity of 500 mJ using a high-pressure mercury lamp having peaks at 313 nm and 365 nm.
As shown in the figure, no difference in transmittance was observed between the portion irradiated with ultraviolet rays and the other portions, and the entire image showed uniform blackness. That is, no deterioration was observed in the appearance of the light control member 1.
（比較例１）
図３（ｂ）の比較例１は、ＣＯＰ（シクロオレフィンポリマー）基材を第１透明基材、第２透明基材として用いた調光部材に、実施例１と同様に紫外線を照射し、その後、電極間の電圧を調整して液晶層の透過率を最小にした際の画像である。
比較例１によると、図示するように、紫外線を照射した部分の液晶セルの外観に劣化がみられた。具体的には、透過率が他の部分と比べて減少せず、他の部分と比較すると、白い画像となった。
(Comparative Example 1)
The comparative example 1 of FIG.3 (b) irradiates the light control member which used the COP (cycloolefin polymer) base material as a 1st transparent base material and a 2nd transparent base material similarly to Example 1, Thereafter, the image is obtained when the voltage between the electrodes is adjusted to minimize the transmittance of the liquid crystal layer.
According to Comparative Example 1, as shown in the drawing, the appearance of the liquid crystal cell in the portion irradiated with ultraviolet rays was deteriorated. Specifically, the transmittance did not decrease as compared with other portions, and a white image was obtained as compared with other portions.
（比較例２）
図３（ｃ）の比較例２は、ＰＣ（ポリカーボネート）基材を第１透明基材、第２透明基材として用いた調光部材に、実施例１と同様に紫外線を照射し、その後、電極間の電圧を調整して液晶層の透過率を最小にした際の画像である。
図示するように、紫外線を照射した部分の液晶セルの外観に劣化がみられた。透過率が他の部分と比べて減少せず、他の部分と比較すると、白い画像となった。
(Comparative Example 2)
The comparative example 2 of FIG.3 (c) irradiates the light control member which used the PC (polycarbonate) base material as a 1st transparent base material and a 2nd transparent base material similarly to Example 1, and then, It is an image when the voltage between the electrodes is adjusted to minimize the transmittance of the liquid crystal layer.
As shown in the figure, the appearance of the liquid crystal cell in the portion irradiated with ultraviolet rays was deteriorated. The transmittance did not decrease compared to the other parts, and a white image was obtained compared to the other parts.
以上に示すように、本実施形態の実施例１によると、比較例１及び比較例２と異なり、実施例１のようにＰＥＴ製の第１透明基材６及び第２透明基材１５を用いて調光部材１を製造した場合、液晶層８の劣化を低減することができることが確認できた。 As described above, according to Example 1 of the present embodiment, unlike Comparative Example 1 and Comparative Example 2, the first transparent base material 6 and the second transparent base material 15 made of PET are used as in Example 1. Thus, it was confirmed that the deterioration of the liquid crystal layer 8 can be reduced when the light control member 1 is manufactured.
（第２実施形態）
図４は本発明の第２実施形態に係る調光部材２０１を示す概略断面図である。図示するように第２実施形態の調光部材２０１は、それぞれが第１実施形態の調光部材１と類似の構成を有する第１液晶セル２０４と第２液晶セル２３４とが２層重なった形状を有する。
第１液晶セル２０４と第２液晶セル２３４とは、間に配置された透明粘着層２３０により互いに貼着されている。
第２実施形態においては、第１液晶セル２０４の透明基材２１５，２０６、第２液晶セル２２４の透明基材２２５，２３６のうちの、互いに対向していない透明基材２１５，２３６、すなわち、調光部材２０１の最も外側に配置されている２つの透明基材２１５，２３６が、ＰＥＴで製造され、紫外線吸収効果を有している。
(Second Embodiment)
FIG. 4 is a schematic cross-sectional view showing a light control member 201 according to the second embodiment of the present invention. As shown in the figure, the light control member 201 of the second embodiment has a shape in which two layers of a first liquid crystal cell 204 and a second liquid crystal cell 234 each having a configuration similar to that of the light control member 1 of the first embodiment are overlapped. Have
The first liquid crystal cell 204 and the second liquid crystal cell 234 are attached to each other by a transparent adhesive layer 230 disposed therebetween.
In the second embodiment, among the transparent base materials 215 and 206 of the first liquid crystal cell 204 and the transparent base materials 225 and 236 of the second liquid crystal cell 224, the transparent base materials 215 and 236 that are not opposed to each other, that is, Two transparent base materials 215 and 236 arranged on the outermost side of the light control member 201 are made of PET and have an ultraviolet absorption effect.
本実施形態においても、透明基材２１５，２３６にＰＥＴを用いているので、少なくとも３２０ｎｍ以下の紫外線は透明基材２１５，２３６で吸収される。そうすると、３２０ｎｍ以下の光は、配向膜２１７，２１３，２２７，２２３、液晶層２０８，２３８（液晶分子、二色性色素）に到達しない。したがって、配向膜２１７，２１３，２２７，２２３、液晶層２０８，２３８（液晶分子、二色性色素）の紫外線による劣化が低減される。
なお、本実施形態においても、透明基材２１５，２３６のうちの、内側となる透明基材は必ずしも紫外線を吸収する材料で製造されていなくてもよい。
Also in this embodiment, since PET is used for the transparent base materials 215 and 236, at least 320 nm or less of ultraviolet rays are absorbed by the transparent base materials 215 and 236. Then, light of 320 nm or less does not reach the alignment films 217, 213, 227, and 223 and the liquid crystal layers 208 and 238 (liquid crystal molecules and dichroic dyes). Therefore, deterioration of the alignment films 217, 213, 227, and 223 and the liquid crystal layers 208 and 238 (liquid crystal molecules and dichroic dyes) due to ultraviolet rays is reduced.
Also in this embodiment, the transparent substrate which is the inner side of the transparent substrates 215 and 236 does not necessarily have to be manufactured from a material that absorbs ultraviolet rays.
（第３実施形態）
図５は本発明の第３実施形態に係る調光部材３０１を示す概略断面図である。図示するように第３実施形態の調光部材３０１は、第１実施形態の調光部材と類似の構成を有する第１液晶セル３０４の一方の透明基材３１５に透明粘着層３２０を介して直線偏光板３２１が貼着されている。そして、第１液晶セル３０４の他方の透明基材３０６がＰＥＴで製造され、紫外線吸収効果を有している。
(Third embodiment)
FIG. 5 is a schematic sectional view showing a light control member 301 according to the third embodiment of the present invention. As shown in the figure, the light control member 301 of the third embodiment is straight through the transparent adhesive layer 320 to one transparent base material 315 of the first liquid crystal cell 304 having a configuration similar to that of the light control member of the first embodiment. A polarizing plate 321 is attached. The other transparent substrate 306 of the first liquid crystal cell 304 is made of PET and has an ultraviolet absorption effect.
本実施形態においても、透明基材３０６がＰＥＴを用いているので、少なくとも３２０ｎｍ以下の紫外線はＰＥＴで吸収される。
また、透明基材３０６と逆側の透明基材３１５側は、外側に直線偏光板３２１が配置されている。直線偏光板３２１により紫外線はある程度カットされる。なお、直線偏光板３２１に紫外線吸収材料を含ませることによって、さらに紫外線の透過を低減することができる。
したがって、本実施形態においても、配向膜３１７，３１３、液晶層３０８（液晶分子、二色性色素）の紫外線による劣化が低減される。
なお、透明基材３１５もＰＥＴにより製造し、紫外線吸収効果を向上させてもよい。
Also in this embodiment, since the transparent base material 306 uses PET, ultraviolet rays of at least 320 nm or less are absorbed by PET.
In addition, a linearly polarizing plate 321 is disposed on the outer side of the transparent substrate 315 opposite to the transparent substrate 306. The linearly polarizing plate 321 cuts ultraviolet rays to some extent. Note that the transmission of ultraviolet rays can be further reduced by including an ultraviolet absorbing material in the linearly polarizing plate 321.
Therefore, also in this embodiment, deterioration of the alignment films 317 and 313 and the liquid crystal layer 308 (liquid crystal molecules and dichroic dye) due to ultraviolet rays is reduced.
Note that the transparent substrate 315 may also be manufactured from PET to improve the ultraviolet absorption effect.
（第４実施形態）
図６は本発明の第４実施形態に係る調光部材４０１を示す概略断面図である。図示するように第４実施形態の調光部材４０１は、第１実施形態の調光部材１と類似の構成を有する第１液晶セル４０４を含む。第１液晶セル４０４の一方の透明基材４１５の更に外側に透明粘着層４２０を介してＰＥＴで製造された透明基材４２１が貼着されている。さらに、第１液晶セル４０４の他方の透明基材４０６がＰＥＴで製造され、紫外線吸収効果を有する。
ただし、本実施形態は、透明基材４０６が室内側を想定しており、透明基材４０６は必ずしも紫外線を吸収する材料で製造されていなくてもよい。
すなわち、本実施形態は、透明電極４１６が形成された透明基材４１５ではなく、その外側にＰＥＴで製造された透明基材４２１が別途設けられている。
(Fourth embodiment)
FIG. 6 is a schematic sectional view showing a light control member 401 according to the fourth embodiment of the present invention. As illustrated, the light control member 401 of the fourth embodiment includes a first liquid crystal cell 404 having a configuration similar to that of the light control member 1 of the first embodiment. A transparent substrate 421 made of PET is attached to the outer side of one transparent substrate 415 of the first liquid crystal cell 404 via a transparent adhesive layer 420. Further, the other transparent substrate 406 of the first liquid crystal cell 404 is made of PET and has an ultraviolet absorption effect.
However, this embodiment assumes that the transparent base material 406 is on the indoor side, and the transparent base material 406 does not necessarily have to be manufactured from a material that absorbs ultraviolet rays.
That is, in this embodiment, not the transparent substrate 415 on which the transparent electrode 416 is formed, but a transparent substrate 421 made of PET is separately provided on the outside thereof.
本実施形態においても、透明基材４２１，４０６がＰＥＴを用いているのでと、少なくとも３２０ｎｍ以下の紫外線はＰＥＴで吸収される。そうすると、３２０ｎｍ以下の光は、配向膜に到達しない。したがって、配向膜４１７，４１３、液晶層４０８（液晶分子、二色性色素）の紫外線による劣化が低減される。
なお、透明基材４２１もＰＥＴにより製造し、紫外線吸収効果を向上させてもよい。
Also in this embodiment, since the transparent base materials 421 and 406 use PET, ultraviolet rays of at least 320 nm or less are absorbed by PET. Then, the light of 320 nm or less does not reach the alignment film. Accordingly, deterioration of the alignment films 417 and 413 and the liquid crystal layer 408 (liquid crystal molecules and dichroic dye) due to ultraviolet rays is reduced.
Note that the transparent substrate 421 may also be manufactured by PET to improve the ultraviolet absorption effect.
（第５実施形態）
図７は本発明の第５実施形態に係る調光部材５０１を示す概略断面図である。図示するように第５実施形態の調光部材５０１は、第１実施形態の調光部材１と類似の構成を有する第１液晶セル５０４に含まれる透明基材５１５，５０６の更に外側に透明粘着層５２０，５２２を介してＰＥＴ製の透明基材５２１，５２３が貼着されている。
すなわち、本実施形態は、透明電極５１６，５１１が形成された透明基材５１５，５０６ではなく、その外側にＰＥＴで製造された透明基材５２１，５２３が別途設けられている。
(Fifth embodiment)
FIG. 7 is a schematic cross-sectional view showing a light control member 501 according to a fifth embodiment of the present invention. As shown in the figure, the light control member 501 of the fifth embodiment has a transparent adhesive on the outer side of the transparent base materials 515 and 506 included in the first liquid crystal cell 504 having a configuration similar to that of the light control member 1 of the first embodiment. Transparent substrates 521 and 523 made of PET are attached via the layers 520 and 522.
That is, in this embodiment, transparent substrates 521 and 523 made of PET are separately provided outside the transparent substrates 515 and 506 on which the transparent electrodes 516 and 511 are formed.
本実施形態においても、透明基材５２１，５２３がＰＥＴを用いているのでと、少なくとも３２０ｎｍ以下の紫外線はＰＥＴで吸収される。そうすると、３２０ｎｍ以下の光は、配向膜５１７，５１３に到達しない。したがって、配向膜５１７，５１３、液晶層５０８（液晶分子、二色性色素）の紫外線による劣化が低減される。
なお、透明基材５１５，５０６もＰＥＴにより製造し、紫外線吸収効果を向上させてもよい。
Also in this embodiment, since the transparent base materials 521 and 523 use PET, at least 320 nm or less of ultraviolet rays are absorbed by PET. Then, the light of 320 nm or less does not reach the alignment films 517 and 513. Therefore, deterioration of the alignment films 517 and 513 and the liquid crystal layer 508 (liquid crystal molecules and dichroic dye) due to ultraviolet rays is reduced.
The transparent base materials 515 and 506 may also be manufactured by PET to improve the ultraviolet absorption effect.
（第６実施形態）
図８は本発明の第６実施形態に係る調光部材６０１を示す概略断面図である。図示するように第６実施形態の調光部材６０１は、それぞれが第１実施形態の調光部材１と類似の構成を有する第１液晶セル６０４と第２液晶セル６３４とが２層重なった形状を有する。
第１液晶セル６０４と第２液晶セル６３４とは、間に配置された透明粘着層６３０により互いに貼着されている。
第６実施形態においては、第１液晶セル６０４における第２液晶セル６３４に対向していない側に、透明粘着層６３１を介して透明基材６３２が配置されている。この透明基材６３２がＰＥＴで製造されて紫外線吸収効果を有している。そして、第２液晶セル６３４における第１液晶セル６０４に対向していない透明基材６３６が、ＰＥＴで製造され紫外線吸収効果を有する。ただし、透明基材６３６側が室内側の場合、透明基材６３６は必ずしも紫外線を吸収する材料で製造されていなくてもよい。
(Sixth embodiment)
FIG. 8 is a schematic sectional view showing a light control member 601 according to the sixth embodiment of the present invention. As shown in the drawing, the light control member 601 of the sixth embodiment has a shape in which two layers of a first liquid crystal cell 604 and a second liquid crystal cell 634, each having a similar configuration to the light control member 1 of the first embodiment. Have
The first liquid crystal cell 604 and the second liquid crystal cell 634 are attached to each other by a transparent adhesive layer 630 disposed therebetween.
In the sixth embodiment, a transparent substrate 632 is disposed on the side of the first liquid crystal cell 604 that is not opposed to the second liquid crystal cell 634 with the transparent adhesive layer 631 interposed therebetween. This transparent substrate 632 is made of PET and has an ultraviolet absorption effect. And the transparent base material 636 which does not oppose the 1st liquid crystal cell 604 in the 2nd liquid crystal cell 634 is manufactured by PET, and has an ultraviolet-absorption effect. However, when the transparent base material 636 side is the indoor side, the transparent base material 636 is not necessarily manufactured from a material that absorbs ultraviolet rays.
本実施形態においても、調光部材６０１の外側に配置された透明基材６３２及び６３６がＰＥＴを用いているので、少なくとも３２０ｎｍ以下の紫外線はＰＥＴで吸収される。そうすると、３２０ｎｍ以下の光は、配向膜６１７，６１３，６２７，６２３、液晶層６１８，６２８（液晶分子、二色性色素）に到達しない。
したがって、配向膜６１７，６１３、６２７，６２３、液晶層６１８，６２８（液晶分子、二色性色素）の紫外線による劣化が低減される。
なお、透明基材６１５もＰＥＴにより製造し、紫外線吸収効果を向上させてもよい。
Also in this embodiment, since the transparent base materials 632 and 636 arranged outside the light control member 601 use PET, at least 320 nm or less of ultraviolet rays are absorbed by PET. Then, light of 320 nm or less does not reach the alignment films 617, 613, 627, 623 and the liquid crystal layers 618, 628 (liquid crystal molecules, dichroic dyes).
Therefore, deterioration of the alignment films 617, 613, 627, 623 and the liquid crystal layers 618, 628 (liquid crystal molecules, dichroic dye) due to ultraviolet rays is reduced.
Note that the transparent substrate 615 may also be manufactured from PET to improve the ultraviolet absorption effect.
（第７実施形態）
図９は本発明の第７実施形態に係る調光部材７０１を示す概略断面図である。図示するように第７実施形態の調光部材７０１は、それぞれが第１実施形態の調光部材１と類似の構成を有する第１液晶セル７０４と第２液晶セル７３４とが２層重なった形状を有する。
第１液晶セル７０４と第２液晶セル７３４とは、間に配置された透明粘着層７３０により互いに貼着されている。
第７実施形態においては、第１液晶セル７０４における第２液晶セル７３４に対向していない側の外側に透明粘着層７３１を介して配置されている透明基材７３２が、ＰＥＴで製造されて紫外線吸収効果を有する。
さらに、第２液晶セル７３４における第１液晶セル７０４に対向していない側の外側に透明粘着層７３３を介して配置されている透明基材７３５が、ＰＥＴで製造されて紫外線吸収効果を有する。
(Seventh embodiment)
FIG. 9 is a schematic cross-sectional view showing a light control member 701 according to a seventh embodiment of the present invention. As shown in the figure, the light control member 701 of the seventh embodiment has a shape in which two layers of a first liquid crystal cell 704 and a second liquid crystal cell 734 each having a configuration similar to that of the light control member 1 of the first embodiment are overlapped. Have
The first liquid crystal cell 704 and the second liquid crystal cell 734 are attached to each other by a transparent adhesive layer 730 disposed therebetween.
In the seventh embodiment, the transparent base material 732 disposed on the outer side of the first liquid crystal cell 704 on the side not facing the second liquid crystal cell 734 via the transparent adhesive layer 731 is manufactured by PET and is used for ultraviolet rays. Has an absorption effect.
Further, the transparent base material 735 disposed on the outer side of the second liquid crystal cell 734 on the side not facing the first liquid crystal cell 704 via the transparent adhesive layer 733 is manufactured by PET and has an ultraviolet absorption effect.
本実施形態においても、透明基材７３２，７３５がＰＥＴを用いているので、少なくとも３２０ｎｍ以下の紫外線はＰＥＴで吸収される。そうすると、３２０ｎｍ以下の光は、配向膜７１７，７１３、７２７，７２３、液晶層７１８，７２８（液晶分子、二色性色素）に到達しない。
したがって、配向膜７１７，７１３、７２７，７２３、液晶層７１８，７２８（液晶分子、二色性色素）の紫外線による劣化が低減される。
なお、透明基材７１５、７３６もＰＥＴにより製造し、紫外線吸収効果を向上させてもよい。
Also in this embodiment, since the transparent base materials 732 and 735 use PET, at least 320 nm or less of ultraviolet rays are absorbed by PET. Then, light of 320 nm or less does not reach the alignment films 717, 713, 727, 723, and the liquid crystal layers 718, 728 (liquid crystal molecules, dichroic dye).
Therefore, deterioration of the alignment films 717, 713, 727, 723 and the liquid crystal layers 718, 728 (liquid crystal molecules, dichroic dyes) due to ultraviolet rays is reduced.
The transparent base materials 715 and 736 may also be manufactured by PET to improve the ultraviolet absorption effect.
（第８実施形態）
図１０は本発明の第８実施形態に係る調光部材８０１を示す概略断面図である。
第８実施形態の調光部材８０１は、第１実施形態の調光部材と類似の構成を有する液晶セル８０４の一方の透明基材８１５に透明粘着層８２０を介して直線偏光板８２１が貼着されている。
そして、さらにその外周側に、透明粘着層８２２を介して配置された透明基材８２３が、ＰＥＴで製造され、紫外線吸収効果を有している。
また、液晶セル８０４の他方の透明基材８０６がＰＥＴで製造され、紫外線吸収効果を有しているが透明基材８０６が内側となる場合、透明基材８０６は必ずしも紫外線を吸収する材料で製造されていなくてもよい。
(Eighth embodiment)
FIG. 10 is a schematic cross-sectional view showing a light control member 801 according to the eighth embodiment of the present invention.
In the light control member 801 of the eighth embodiment, a linearly polarizing plate 821 is attached to one transparent substrate 815 of a liquid crystal cell 804 having a configuration similar to that of the light control member of the first embodiment via a transparent adhesive layer 820. Has been.
And the transparent base material 823 arrange | positioned through the transparent adhesion layer 822 further in the outer peripheral side is manufactured with PET, and has an ultraviolet-absorption effect.
In addition, when the other transparent substrate 806 of the liquid crystal cell 804 is made of PET and has an ultraviolet absorption effect, but the transparent substrate 806 is inside, the transparent substrate 806 is necessarily made of a material that absorbs ultraviolet rays. It does not have to be.
本実施形態においては、調光部材８０１の一方は、直線偏光板８２１が配置され、さらにＰＥＴで製造された透明基材８２３が配置されているので、紫外線の透過がより低減される。
調光部材８０１の他方の透明基材８０６が、ＰＥＴで製造されているので、紫外線が吸収効果を有している。
したがって、３２０ｎｍ以下の紫外線は、配向膜８１７，８１３、液晶層８０８（液晶分子、二色性色素）に到達しない。
したがって、配向膜８１７，８１３、液晶層８０８（液晶分子、二色性色素）の紫外線による劣化が低減される。
なお、透明基材８１５、８２１もＰＥＴにより製造し、紫外線吸収効果を向上させてもよい。
In the present embodiment, since one of the light control members 801 is provided with the linearly polarizing plate 821 and further with the transparent base material 823 made of PET, the transmission of ultraviolet rays is further reduced.
Since the other transparent substrate 806 of the light control member 801 is made of PET, ultraviolet rays have an absorption effect.
Accordingly, ultraviolet rays of 320 nm or less do not reach the alignment films 817 and 813 and the liquid crystal layer 808 (liquid crystal molecules and dichroic dye).
Therefore, deterioration of the alignment films 817 and 813 and the liquid crystal layer 808 (liquid crystal molecules and dichroic dye) due to ultraviolet rays is reduced.
The transparent base materials 815 and 821 may also be manufactured by PET to improve the ultraviolet absorption effect.
（第９実施形態）
図１１は本発明の第９実施形態に係る調光部材９０１を示す概略断面図である。
第９実施形態の調光部材９０１は、第１実施形態の調光部材と類似の構成を有する液晶セル９０４の一方の透明基材９１５に透明粘着層９２０を介して直線偏光板９２１が貼着されている。
そして、さらにその外周側に、透明粘着層９２２を介して配置された透明基材９２３が、ＰＥＴで製造され、紫外線吸収効果を有している。
また、液晶セル９０４の他方の透明基材９０６に透明粘着層９３１を介して紫外線吸収材料を含んだ直線偏光板９３２が貼着されている。
(Ninth embodiment)
FIG. 11 is a schematic cross-sectional view showing a light control member 901 according to the ninth embodiment of the present invention.
In the light control member 901 of the ninth embodiment, the linearly polarizing plate 921 is attached to one transparent base material 915 of the liquid crystal cell 904 having a configuration similar to that of the light control member of the first embodiment via the transparent adhesive layer 920. Has been.
And the transparent base material 923 arrange | positioned through the transparent adhesion layer 922 further in the outer peripheral side is manufactured with PET, and has an ultraviolet-absorption effect.
In addition, a linear polarizing plate 932 containing an ultraviolet absorbing material is attached to the other transparent base material 906 of the liquid crystal cell 904 via a transparent adhesive layer 931.
本実施形態においては、調光部材９０１の一方は、紫外線吸収材料を含んだ直線偏光板９２１が配置され、さらにＰＥＴで製造された透明基材９２３が配置されているので、紫外線の透過がより低減される。
調光部材９０１の他方は、透明基材９０６に透明粘着層９３１を介して直線偏光板９３２が貼着されている。
したがって、３２０ｎｍ以下の紫外線は、配向膜９１７，９３９、液晶層９０８（液晶分子、二色性色素）に到達しない。
したがって、配向膜９１７，９１３、液晶層９０８（液晶分子、二色性色素）の紫外線による劣化が低減される。
なお、透明基材９１５、９０６もＰＥＴにより製造し、紫外線吸収効果を向上させてもよい。
In the present embodiment, one of the light control members 901 is provided with a linear polarizing plate 921 containing an ultraviolet absorbing material, and further provided with a transparent base material 923 made of PET, so that more ultraviolet light is transmitted. Reduced.
The other of the light control member 901 has a linear polarizing plate 932 attached to a transparent base material 906 with a transparent adhesive layer 931 interposed therebetween.
Accordingly, ultraviolet rays of 320 nm or less do not reach the alignment films 917 and 939 and the liquid crystal layer 908 (liquid crystal molecules and dichroic dye).
Therefore, deterioration of the alignment films 917 and 913 and the liquid crystal layer 908 (liquid crystal molecules and dichroic dye) due to ultraviolet rays is reduced.
The transparent base materials 915 and 906 may also be manufactured by PET to improve the ultraviolet absorption effect.
（第１０実施形態）
図１２は本発明の第１０実施形態に係る調光部材１００１を示す概略断面図である。
第１０実施形態の調光部材１００１は、第１実施形態の調光部材と類似の構成を有する液晶セル１００４の一方の透明基材１０１５に透明粘着層１０２１を介してＰＥＴにより製造された透明基材１０２２が貼着されている。
そして、さらにその外周側に、透明粘着層１０２３を介して配置された防湿層１０２４が貼着されている。防湿層１０２４は、吸水率が低い透明フィルム材であるＣＯＰやガラスで製造されている。
また、液晶セル１００４の他方の透明基材１００６は、ＰＥＴで製造され紫外線吸収効果を有する。
(10th Embodiment)
FIG. 12 is a schematic sectional view showing a light control member 1001 according to the tenth embodiment of the present invention.
The light control member 1001 of the tenth embodiment is a transparent base manufactured by PET on one transparent base material 1015 of a liquid crystal cell 1004 having a configuration similar to that of the light control member of the first embodiment via a transparent adhesive layer 1021. A material 1022 is attached.
Further, on the outer peripheral side, a moisture-proof layer 1024 disposed via a transparent adhesive layer 1023 is attached. The moisture-proof layer 1024 is made of COP or glass, which is a transparent film material having a low water absorption rate.
The other transparent substrate 1006 of the liquid crystal cell 1004 is made of PET and has an ultraviolet absorption effect.
本実施形態においては、調光部材１００１の一方は、ＰＥＴで製造された透明基材１０２２が配置され、調光部材１００１の他方の透明基材１００６はＰＥＴで製造され、紫外線吸収効果を有する。ただし、透明基材１０２２，１００６のうちの液晶層１００８に対して室内側となる透明基材は必ずしも紫外線を吸収する材料で製造されていなくてもよい。
したがって、３２０ｎｍ以下の紫外線は、配向膜１０１７，１０１３、液晶層１００８（液晶分子、二色性色素）に到達しない。
したがって、配向膜１０１７，１０１３、液晶層１００８（液晶分子、二色性色素）の紫外線による劣化が低減される。
さらに、防湿層１０２４が設けられているので、防湿効果を有する。
したがって、加水分解等による配向膜１０１７，１０１３の劣化が低減される。
なお、透明基材１０１５もＰＥＴにより製造し、紫外線吸収効果を向上させてもよい。
In the present embodiment, one of the light control members 1001 is provided with a transparent base material 1022 made of PET, and the other transparent base material 1006 of the light control members 1001 is made of PET and has an ultraviolet absorption effect. However, the transparent substrate which is on the indoor side with respect to the liquid crystal layer 1008 among the transparent substrates 1022 and 1006 is not necessarily made of a material that absorbs ultraviolet rays.
Accordingly, ultraviolet rays of 320 nm or less do not reach the alignment films 1017 and 1013 and the liquid crystal layer 1008 (liquid crystal molecules and dichroic dye).
Therefore, deterioration of the alignment films 1017 and 1013 and the liquid crystal layer 1008 (liquid crystal molecules and dichroic dye) due to ultraviolet rays is reduced.
Furthermore, since the moisture-proof layer 1024 is provided, it has a moisture-proof effect.
Therefore, deterioration of the alignment films 1017 and 1013 due to hydrolysis or the like is reduced.
Note that the transparent substrate 1015 may also be manufactured from PET to improve the ultraviolet absorption effect.
（第１１実施形態）
図１３は本発明の第１１実施形態に係る調光部材１１０１を示す概略断面図である。
第１１実施形態の調光部材１１０１は、第１実施形態の調光部材１と類似の構成を有する液晶セル１１０４の一方の透明基材１１１５に透明粘着層１１２１を介してＰＥＴにより形成された透明基材１１２２が貼着されている。
そして、さらにその外周側に、透明粘着層１１２３を介して配置されたＩＲ（赤外線）カットフィルム１１２４が貼着されている。
また、液晶セル１１０４の他方の透明基材１１０６は、ＰＥＴで製造され紫外線吸収効果を有する。ただし、透明基材１１２２，１１０６のうちの液晶層１１０８に対して室内側となる透明基材は必ずしも紫外線を吸収する材料で製造されていなくてもよい。
(Eleventh embodiment)
FIG. 13: is a schematic sectional drawing which shows the light control member 1101 which concerns on 11th Embodiment of this invention.
The light control member 1101 of the eleventh embodiment is a transparent material formed of PET on the one transparent base material 1115 of the liquid crystal cell 1104 having a configuration similar to that of the light control member 1 of the first embodiment via the transparent adhesive layer 1121. A base material 1122 is attached.
Further, an IR (infrared) cut film 1124 disposed via a transparent adhesive layer 1123 is attached to the outer peripheral side.
The other transparent substrate 1106 of the liquid crystal cell 1104 is made of PET and has an ultraviolet absorption effect. However, the transparent substrate that is on the indoor side of the liquid crystal layer 1108 among the transparent substrates 1122 and 1106 is not necessarily made of a material that absorbs ultraviolet rays.
本実施形態においては、調光部材１１０１の一方は、ＰＥＴで製造された透明基材１１２２が配置され、調光部材１１０１の他方の透明基材１１０６はＰＥＴで製造され紫外線吸収効果を有する。
したがって、３２０ｎｍ以下の紫外線は、配向膜１１１７，１１１３、液晶層１１０８（液晶分子、二色性色素）に到達しない。
したがって、配向膜１１１７，１１１３、液晶層１１０８（液晶分子、二色性色素）の紫外線による劣化が低減される。
さらに、ＩＲカットフィルム１１２４が設けられているので、赤外線遮断効果を有する。
したがって、調光部材１１０１に断熱効果機能を付加することができる。
In the present embodiment, one of the light control members 1101 is provided with a transparent base material 1122 made of PET, and the other transparent base material 1106 of the light control members 1101 is made of PET and has an ultraviolet absorption effect.
Accordingly, ultraviolet rays of 320 nm or less do not reach the alignment films 1117 and 1113 and the liquid crystal layer 1108 (liquid crystal molecules and dichroic dye).
Therefore, deterioration of the alignment films 1117 and 1113 and the liquid crystal layer 1108 (liquid crystal molecules and dichroic dye) due to ultraviolet rays is reduced.
Furthermore, since the IR cut film 1124 is provided, it has an infrared shielding effect.
Therefore, a heat insulating effect function can be added to the light control member 1101.
１，２０１，３０１，４０１，５０１，６０１，７０１，８０１，９０１，１００１，１１０１ 調光部材
５Ｄ 第１積層体
５Ｕ 第２積層体
６，１５，２０６，２１５，２２５，２３６，３０６，３１５，４０６，４１５，４２１，５０６，５１５，５２１，５２３，６０６，６１５，６２５，６３２，６３６，７０６，７１５，７２５，７３２，７３６，８０６，８１５，８２３，９０６，９１５，９２３，１００６，１０１５，１０２２，１１０６，１１１５，１１２２ 透明基材
８，２０８，２３８，３０８，４０８，５０８，６１８，６２８，７１８，７２８，８０８，９０８，１００８，１１０８ 液晶層
１１，１６，４１６，５１１，５１６ 透明電極
１２ スペーサ
１３，１７，２１３，２１７，２２３，２２７，３１３，３１７，４１３，４１７，５１３，５１７，６１３，６１７，６２３，６２７，７１３，７１７，７２３，７２７，８１７，９１３，９１７，９３９，１０１３，１０１７，１１１３，１１１７ 配向膜
１９ シール材
２０４，２２４，２３４，３０４，４０４，５０４，６０４，６３４，７０４，７１４，７２４，７３４，８０４，９０４，１００４，１１０４ 液晶セル
２３０，３２０，４２０，５２０，５２２，６３０，６３１，７３０，７３１，７３３，８２０，８２２，９２０，９２２，９３１，１０２１，１０２３，１１２１，１１２３ 透明粘着層
３２１，８２１，９２１，９３２ 直線偏光板
１０２４ 防湿層
１１２４ ＩＲカットフィルム
1,201,301,401,501,601,701,801,901,1001,1101 Dimming member 5D 1st laminated body 5U 2nd laminated body 6,15,206,215,225,236,306,315, 406,415,421,506,515,521,523,606,615,625,632,636,706,715,725,732,736,806,815,823,906,915,923,1006,1015 1022, 1106, 1115, 1122 Transparent substrate 8, 208, 238, 308, 408, 508, 618, 628, 718, 728, 808, 908, 1008, 1108 Liquid crystal layer 11, 16, 416, 511, 516 Transparent electrode 12 Spacers 13, 17, 213, 217, 223, 227, 313, 31 , 413, 417, 513, 517, 613, 617, 623, 627, 713, 717, 723, 727, 817, 913, 917, 939, 1013, 1017, 1113, 1117 Alignment film 19 Sealing material 204, 224, 234 , 304, 404, 504, 604, 634, 704, 714, 724, 734, 804, 904, 1004, 1104 liquid crystal cells 230, 320, 420, 520, 522, 630, 631, 730, 731, 733, 820, 822, 920, 922, 931, 1021, 1023, 1121, 1123 Transparent adhesive layer 321, 821, 921, 932 Linearly polarizing plate 1024 Moisture-proof layer 1124 IR cut film
Claims (10)
第２透明電極と、
液晶材料及び二色性色素を含み、前記第１透明電極と前記第２透明電極との間の電位差によって光の透過率が変動する液晶層と、
前記液晶層の少なくとも一方の側に配置され、且つ紫外線を吸収する透明基材と、
を含む調光部材。 A first transparent electrode;
A second transparent electrode;
A liquid crystal layer containing a liquid crystal material and a dichroic dye, the light transmittance of which varies depending on a potential difference between the first transparent electrode and the second transparent electrode;
A transparent substrate disposed on at least one side of the liquid crystal layer and absorbing ultraviolet rays;
Light control member including
請求項１に記載の調光部材。 The transparent substrate is formed of an aromatic polyester material;
The light control member according to claim 1.
請求項１または２に記載の調光部材。 The transparent substrate absorbs ultraviolet rays of 313 nm,
The light control member of Claim 1 or 2.
前記透明基材は、前記光硬化型樹脂を硬化させる紫外線を透過する、
請求項１から３のいずれか１項に記載の調光部材。 The liquid crystal layer is provided with a photo-curing resin spacer that defines the interval between the liquid crystal layers.
The transparent base material transmits ultraviolet light that cures the photocurable resin.
The light control member of any one of Claim 1 to 3.
請求項１から４のいずれか１項に記載の調光部材。 The transparent substrate is made of polyethylene terephthalate,
The light control member of any one of Claim 1 to 4.
請求項１または２に記載の調光部材。 The transparent substrate is made of polyethylene naphthalate,
The light control member of Claim 1 or 2.
請求項１から６のいずれか１項に記載の調光部材。 The light control member according to any one of claims 1 to 6, wherein the first transparent electrode or the second transparent electrode is formed on the transparent substrate.
請求項１から６のいずれか１項に記載の調光部材。 The transparent substrate is arranged outside the substrate on which the first transparent electrode or the second transparent electrode is formed,
The light control member of any one of Claim 1 to 6.
請求項１から８のいずれか１項に記載の調光部材。 Provided with a moisture-proof layer outside the transparent substrate,
The light control member of any one of Claim 1 to 8.
請求項１から９のいずれか１項に記載の調光部材。 An infrared cut film is provided outside the transparent substrate,
The light control member of any one of Claim 1 to 9.
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| JP2020024341A (en) * | 2018-08-08 | 2020-02-13 | 大日本印刷株式会社 | Light control cell and manufacturing method thereof, light control device, and method of manufacturing the same |
| KR20200130867A (en) * | 2018-07-06 | 2020-11-20 | 가디언 글라스, 엘엘씨 | Potentiometric drive shade with improved coil strength, method of manufacturing the same and method of operating the same |
| KR20200134325A (en) * | 2018-07-06 | 2020-12-01 | 가디언 글라스, 엘엘씨 | Potentiometric drive shade comprising a shutter supporting surface-modified conductive coating, method of manufacturing the same and method of operating the same |
| US20230339297A1 (en) * | 2019-12-23 | 2023-10-26 | Oviation B.V. | Transparent sun visor for vehicles |
| JP7476718B2 (en) | 2020-08-12 | 2024-05-01 | 三菱ケミカル株式会社 | Light control materials |
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