JP2019066633A - Circularly polarized light absorption filter, optical element including the circularly polarized light absorption filter, and organic el element including the circularly polarized light absorption filter - Google Patents
Circularly polarized light absorption filter, optical element including the circularly polarized light absorption filter, and organic el element including the circularly polarized light absorption filterInfo
- Publication number
- JP2019066633A JP2019066633A JP2017191099A JP2017191099A JP2019066633A JP 2019066633 A JP2019066633 A JP 2019066633A JP 2017191099 A JP2017191099 A JP 2017191099A JP 2017191099 A JP2017191099 A JP 2017191099A JP 2019066633 A JP2019066633 A JP 2019066633A
- Authority
- JP
- Japan
- Prior art keywords
- polarized light
- circularly polarized
- metamaterial
- absorption filter
- light absorption
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000031700 light absorption Effects 0.000 title claims abstract description 88
- 230000003287 optical effect Effects 0.000 title claims abstract description 28
- 239000000758 substrate Substances 0.000 claims description 47
- 238000000034 method Methods 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 238000012546 transfer Methods 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 4
- 230000001747 exhibiting effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 11
- 230000007246 mechanism Effects 0.000 abstract description 8
- 230000002265 prevention Effects 0.000 abstract description 7
- 238000005401 electroluminescence Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 81
- 230000010287 polarization Effects 0.000 description 37
- 230000002238 attenuated effect Effects 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 6
- 239000000956 alloy Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000005525 hole transport Effects 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 229920006254 polymer film Polymers 0.000 description 3
- 239000013598 vector Substances 0.000 description 3
- -1 ITO Chemical class 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 2
- 229930006000 Sucrose Natural products 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000003667 anti-reflective effect Effects 0.000 description 2
- 239000002041 carbon nanotube Substances 0.000 description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000012552 review Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000001338 self-assembly Methods 0.000 description 2
- 239000005720 sucrose Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 229920002284 Cellulose triacetate Polymers 0.000 description 1
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000005264 High molar mass liquid crystal Substances 0.000 description 1
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 1
- 229920012266 Poly(ether sulfone) PES Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000009500 colour coating Methods 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000000609 electron-beam lithography Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000002795 fluorescence method Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000010944 silver (metal) Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Polarising Elements (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
本発明は、円偏光吸収フィルタ、並びに該円偏光吸収フィルタを備える光学素子及び該円偏光吸収フィルタを備える有機ＥＬ素子に関する。 The present invention relates to a circularly polarized light absorption filter, an optical element provided with the circularly polarized light absorption filter, and an organic EL element provided with the circularly polarized light absorption filter.
有機エレクトロルミネッセンス（ＥＬ）ディスプレイでは、曲げられること（フレキシブル、ベンダブル）、又は折り曲げられこと（フォルダブル）が希求されている。
有機ＥＬディスプレイに用いられる有機ＥＬ素子では、コントラスト向上のために外光反射防止フィルタが用いられており、当該外光反射防止フィルタは、直線偏光板と１/４波長板の積層体である。直線偏光板は、ヨウ素で染色された延伸ポリビニルアルコールフィルムをトリアセチルセルロースフィルムで挟持した構造を有し、厚みがあるために屈曲性に欠ける。また１/４波長板には、例えばポリカーボネートなどの高分子の延伸フィルムや配向した高分子液晶フィルムなどが用いられている。従来の高分子材料の複屈折はさほど大きくないので、必要な位相差を実現するにはある程度の厚みが必要であり、１/４波長板も屈曲性に欠ける。このように、有機ＥＬ素子の外光反射防止フィルタは、厚く、柔軟性に欠けるため、小さい曲率半径での曲げ及び繰り返しの折り曲げには対応できていない。
有機ＥＬ素子では、薄くかつ柔軟な外光反射防止フィルタが求められている。
In organic electroluminescent (EL) displays, it is desirable to be bent (flexible, bendable) or to be folded (foldable).
In the organic EL element used for the organic EL display, an external light reflection preventing filter is used to improve the contrast, and the external light reflection preventing filter is a laminate of a linear polarizing plate and a quarter wavelength plate. The linear polarizing plate has a structure in which a stretched polyvinyl alcohol film dyed with iodine is sandwiched by a triacetyl cellulose film, and lacks flexibility because of its thickness. Further, for the quarter-wave plate, for example, a stretched film of a polymer such as polycarbonate, an oriented polymer liquid crystal film, or the like is used. Since the birefringence of conventional polymer materials is not so large, a certain degree of thickness is necessary to realize the required retardation, and the quarter-wave plate also lacks flexibility. Thus, the external light reflection preventing filter of the organic EL element is thick and lacks flexibility, so it can not cope with bending with a small radius of curvature and repeated bending.
In the organic EL element, a thin and flexible outside light reflection preventing filter is required.
特許文献１は、薄型の直線偏光板の製造方法を開示する。しかしながら、偏光板の厚みを薄くすると、高い消光比を維持することが難しくなる。また、特許文献２は、金属ワイヤを用いた直線偏光板を開示するが、透過偏光軸と直交する偏光は反射してしまうため、有機ＥＬ素子の外光反射防止フィルタにはそのままでは適用できない。
特許文献３は、吸収型直線偏光板と、反射型直線偏光板と、１/４波長板からなる外光反射防止フィルタを用い、さらに有機ＥＬ層の発光面を拡散反射性とすることで、外光反射を防止するとともに、有機ＥＬの光の取出し効率を向上させることを開示する。しかしながら、当該反射防止フィルタは３層構造と複雑で、やはり屈曲性に欠ける問題がある。
Patent Document 1 discloses a method of manufacturing a thin linear polarizing plate. However, when the thickness of the polarizing plate is reduced, it becomes difficult to maintain a high extinction ratio. Moreover, although patent document 2 discloses the linear-polarizing plate which used the metal wire, since the polarization | polarized-light orthogonal to a transmission polarization axis is reflected, it can not be applied as it is to the exterior light reflection prevention filter of an organic EL element.
Patent Document 3 uses an absorption type linear polarization plate, a reflection type linear polarization plate, and an external light antireflection filter including a quarter wavelength plate, and further makes the light emitting surface of the organic EL layer diffuse reflective. It is disclosed to improve the light extraction efficiency of the organic EL as well as to prevent external light reflection. However, the antireflective filter is complicated with the three-layer structure, and also has a problem of lack of flexibility.
メタマテリアルを用いた反射防止フィルタの試みもなされている。メタマテリアルは、対象となる電磁波の波長よりも小さい人工構造体であり、負の屈折率などの特異な特性を発現する材料として注目されている（非特許文献１及び２）。
特許文献４は、メタマテリアルの共振器アレイからなる位相差板であって、平面内のｘ軸方向とｙ軸方向のアレイの配列密度を変えることで屈折率異方性を発現させる位相差板を開示する。しかしながら、有機ＥＬ素子の外光反射防止フィルタに用いるには、さらに直線偏光板を組み合わせる必要があり、構成が複雑かつ厚くなり、柔軟性に欠ける問題がある。
特許文献５は、櫛形構造のメタマテリアルを用いた１／４波長板を開示するが、当該１／４波長板は反射型であり、有機ＥＬ素子の反射防止フィルタには適用できない。
Attempts have also been made to anti-reflection filters using metamaterials. Metamaterials are artificial structures smaller than the wavelength of the target electromagnetic wave, and are attracting attention as materials that exhibit unique characteristics such as negative refractive index (Non-Patent Documents 1 and 2).
Patent document 4 is a retardation plate which consists of a resonator array of metamaterials, and is a retardation plate which expresses refractive index anisotropy by changing the arrangement density of the array in the x-axis direction and y-axis direction in a plane. Disclose. However, in order to use for the external light reflection prevention filter of an organic EL element, it is necessary to combine a linear-polarizing plate further, a structure becomes complicated and thick, and there exists a problem which lacks in flexibility.
Patent Document 5 discloses a quarter-wave plate using a metamaterial having a comb structure, but the quarter-wave plate is a reflection type and can not be applied to an antireflection filter of an organic EL element.
本発明の目的は、新規な外光反射防止機構を有する円偏光吸収フィルタを提供することである。
本発明の他の目的は、折り曲げが可能でコントラストが向上した発光素子を提供することである。
本発明の他の目的は、折り曲げが可能でコントラストが向上した有機ＥＬ素子を提供することである。
An object of the present invention is to provide a circularly polarized light absorption filter having a novel outside light reflection preventing mechanism.
Another object of the present invention is to provide a light emitting device which can be bent and has an improved contrast.
Another object of the present invention is to provide an organic EL device which can be bent and has an improved contrast.
本発明によれば、以下の円偏光吸収フィルタ等が提供される。
１．旋光性を示すメタマテリアルを有する円偏光吸収フィルタであって、
前記メタマテリアルが、損失要素を含むメタマテリアルである円偏光吸収フィルタ。
２．前記メタマテリアルが、立体的ねじれ構造又は擬平面ねじれ構造を有するメタマテリアルである１に記載の円偏光吸収フィルタ。
３．前記立体的ねじれ構造が、ラセン状構造又はすだれ構造積層体である２に記載の円偏光吸収フィルタ。
４．前記メタマテリアルが、導電性材料からなる１〜３のいずれかに記載の円偏光吸収フィルタ。
５．前記損失要素を含むメタマテリアルが、抵抗体と電気的に接続したメタマテリアル、又は透明導電性媒体で被覆されたメタマテリアルである１〜４のいずれかに記載の円偏光吸収フィルタ。
６．入射光のうち、右回り円偏光を減衰させて左回り円偏光を透過させる、又は、入射光のうち、左回り円偏光を減衰させて右回り円偏光を透過させる、１〜５のいずれかに記載の円偏光吸収フィルタ。
７．前記メタマテリアルが、基板上に等間隔Ｐで周期的に複数形成されており、
前記メタマテリアルの前記基板水平方向の最大幅をＤ、前記メタマテリアルの前記基板垂直方向の高さをＬとしたとき、Ｄ、Ｌ及びＰがいずれも４０ｎｍ〜３９０ｎｍである１〜６のいずれかに記載の円偏光吸収フィルタ。
８．１〜７のいずれかに記載の円偏光吸収フィルタを含む光学素子。
９．１〜７のいずれかに記載の円偏光吸収フィルタ、透明電極層、有機エレクトロルミネッセンス層及び反射層をこの順に含む有機エレクトロルミネッセンス素子。
１０．キャリア基板上に複数のメタマテリアルを形成して、前記複数のメタマテリアルからなるメタマテリアル構造を含むメタマテリアル積層体を製造し、
光学素子の発光部位に前記メタマテリアル積層体のメタマテリアル構造を転写法によって接合し、前記キャリア基板を剥離する光学素子の製造方法。
１１．キャリア基板上に複数のメタマテリアルを形成して、前記複数のメタマテリアルからなるメタマテリアル構造を含むメタマテリアル積層体を製造し、
透明電極層、有機エレクトロルミネッセンス層及び反射層を含む積層体の前記透明電極層と前記メタマテリアル積層体のメタマテリアル構造を転写法によって接合し、前記キャリア基板を剥離する有機エレクトロルミネッセンス素子の製造方法。
１２．８に記載の光学素子を備えるディスプレイ。
１３．９に記載の有機エレクトロルミネッセンス素子を備えるディスプレイ。
According to the present invention, the following circularly polarized light absorption filters and the like are provided.
1. A circularly polarized light absorption filter comprising a metamaterial exhibiting optical activity, comprising:
The circularly polarized light absorption filter, wherein the metamaterial is a metamaterial including a loss element.
2. The circularly polarized light absorption filter according to 1, wherein the metamaterial is a metamaterial having a three-dimensional twist structure or a pseudo-plane twist structure.
3. 2. The circularly polarized light absorption filter according to 2, wherein the three-dimensional twisted structure is a helical structure or a laminated structure of an interdigital transducer.
4. The circularly polarized light absorption filter according to any one of 1 to 3, wherein the metamaterial is made of a conductive material.
5. The circularly polarized light absorption filter according to any one of 1 to 4, wherein the metamaterial including the loss element is a metamaterial electrically connected to a resistor, or a metamaterial coated with a transparent conductive medium.
6. Among incident light, it attenuates right-handed circularly polarized light and transmits left-handed circularly polarized light, or attenuates left-handed circularly polarized light and transmits right-handed circularly polarized light among incident light. The circularly polarized light absorption filter described in.
7. A plurality of the metamaterials are periodically formed on the substrate at equal intervals P,
When the maximum width of the metamaterial in the substrate horizontal direction is D, and the height of the metamaterial in the substrate vertical direction is L, any of D, L, and P is 40 nm to 390 nm. The circularly polarized light absorption filter described in.
8. An optical element comprising the circularly polarized light absorption filter according to any one of 8.1 to 7.
9. The organic electroluminescent element which contains the circularly polarized light absorption filter in any one of 9.1-7, a transparent electrode layer, an organic electroluminescent layer, and a reflection layer in this order.
10. Forming a plurality of metamaterials on a carrier substrate to produce a metamaterial laminate including a metamaterial structure composed of the plurality of metamaterials;
The manufacturing method of the optical element which joins the metamaterial structure of the said metamaterial laminated body to the light emission site | part of an optical element by the transfer method, and peels off the said carrier substrate.
11. Forming a plurality of metamaterials on a carrier substrate to produce a metamaterial laminate including a metamaterial structure composed of the plurality of metamaterials;
A method of manufacturing an organic electroluminescent device, wherein the transparent electrode layer of a laminate including a transparent electrode layer, an organic electroluminescent layer and a reflective layer and the metamaterial structure of the metamaterial laminate are joined by a transfer method, and the carrier substrate is peeled off .
The display provided with the optical element of 12.8.
The display provided with the organic electroluminescent element of 13.9.
本発明によれば、新規な外光反射防止機構を有する円偏光吸収フィルタが提供できる。
本発明によれば、折り曲げが可能でコントラストが向上した発光素子が提供できる。
本発明によれば、折り曲げが可能でコントラストが向上した有機ＥＬ素子が提供できる。
According to the present invention, it is possible to provide a circularly polarized light absorption filter having a novel external light reflection preventing mechanism.
According to the present invention, it is possible to provide a light emitting element which can be bent and whose contrast is improved.
According to the present invention, it is possible to provide an organic EL element which can be bent and whose contrast is improved.
［円偏光吸収フィルタ］
本発明の一態様に係る円偏光吸収フィルタは、旋光性を示すメタマテリアルを有し、当該メタマテリアルは損失要素を含む。
本態様におけるメタマテリアルは、例えば可視光の波長（４００〜７８０ｎｍ）よりも小さい微小構造体であり、旋光性を示し、直線偏光を円偏光に変換することができる。旋光性を示すメタマテリアルは、反射特性及び／又は光相反性により、そのままでは外光反射抑制に用いることはできない。円偏光との相互作用によってメタマテリアルに誘起される電流を減衰させ、電流エネルギーを熱に変換し、再放射による反射を抑制する必要がある。本態様では、メタマテリアルが損失要素を含むことにより、可視光通過によって誘起される励起電流を減衰し、再放射による光の反射を抑制することができる。
尚、上記円偏光は、より一般的には楕円偏光である。
[Circular polarization absorption filter]
The circularly polarized light absorption filter according to one aspect of the present invention includes a metamaterial exhibiting optical activity, and the metamaterial includes a loss element.
The metamaterial in this aspect is, for example, a microstructure smaller than the wavelength (400 to 780 nm) of visible light, exhibits optical rotation, and can convert linearly polarized light into circularly polarized light. A metamaterial exhibiting optical activity can not be used as it is to suppress external light reflection because of its reflection property and / or light reciprocity. It is necessary to attenuate the current induced in the metamaterial by interaction with circularly polarized light, convert the current energy into heat, and suppress the reflection due to re-emission. In this aspect, the metamaterial includes the loss element, so that the excitation current induced by visible light passage can be attenuated and the reflection of light due to re-emission can be suppressed.
The circularly polarized light is more generally elliptically polarized light.
円偏光吸収フィルタが、損失要素を含むメタマテリアルを有することで、円偏光吸収フィルタの厚みを極めて薄くすることができる。具体的には、従来の直線偏光板及び位相差板からなる円偏光吸収フィルタの厚みが、通常１００μｍ以上あるのに対し、本態様の円偏光吸収フィルタの厚みは、後述する基板を含めたとしても、数１０μｍ以下とすることができる。この薄さにより、本態様の円偏光吸収フィルタは柔軟性、屈曲性も示すことができる。 The circularly polarized light absorption filter can be made extremely thin by including the metamaterial including the loss element. Specifically, while the thickness of the circularly polarized light absorption filter consisting of the conventional linear polarizing plate and the retardation plate is usually 100 μm or more, the thickness of the circularly polarized light absorption filter of this embodiment includes the substrate described later Can be several tens of μm or less. Due to this thinness, the circularly polarized light absorption filter of this embodiment can also exhibit flexibility and flexibility.
本態様の円偏光吸収フィルタは、好ましくは基板上に、損失要素を含むメタマテリアルが等間隔で周期的に複数形成された構造を有する。
図１は、本態様の円偏光吸収フィルタの一実施形態を示す図である。
円偏光吸収フィルタ１では、基板１０上に複数の損失要素を含むメタマテリアル２０が、アレイ状に配置されている。円偏光吸収フィルタ１に光（無偏光）が入射した時、メタマテリアル２０は、入射光のうち、右回り円偏光を減衰させて、左回り円偏光を透過させる、又は、左回り円偏光を減衰させて、右回り円偏光を透過させることができる。
以下、円偏光吸収フィルタの各部材について説明する。
The circularly polarized light absorption filter of this aspect preferably has a structure in which a plurality of metamaterials including loss elements are periodically formed at regular intervals on a substrate.
FIG. 1 is a view showing an embodiment of the circularly polarized light absorption filter of the present aspect.
In the circularly polarized light absorption filter 1, metamaterials 20 including a plurality of loss elements are arranged in an array on a substrate 10. When light (non-polarized light) enters the circularly polarized light absorption filter 1, the metamaterial 20 attenuates right-handed circularly polarized light among incident light and transmits left-handed circularly polarized light, or left-handed circularly polarized light It can be attenuated to transmit clockwise circularly polarized light.
Hereinafter, each member of the circularly polarized light absorption filter will be described.
メタマテリアルは、立体的ねじれ構造を有するメタマテリアルであると好ましい。
「立体的ねじれ構造」とは、光の進行方向に対して、構造がねじれて（少しずつ回転して）おり、全体として鏡像対称性を持たない構造を意味する。
立体的ねじれ構造を有するメタマテリアルは、入射光のうち、右回り円偏光を減衰させ左回り円偏光を透過させる、又は、入射光のうち、左回り円偏光を減衰させ右回り円偏光を透過させることができる。
The metamaterial is preferably a metamaterial having a steric torsion structure.
The “three-dimensional twisted structure” means a structure in which the structure is twisted (slightly rotated) with respect to the traveling direction of light and has no mirror symmetry as a whole.
A metamaterial having a three-dimensional twisted structure attenuates right-handed circularly polarized light and transmits left-handed circularly polarized light among incident light, or attenuates left-handed circularly polarized light and transmits right-handed circularly polarized light among incident light. It can be done.
立体的ねじれ構造を有するメタマテリアルとしては、ラセン状構造を有するメタマテリアル又はすだれ構造積層体からなるメタマテリアルが好ましい。 As the metamaterial having a steric twist structure, a metamaterial having a helical structure or a metamaterial composed of a laminate structure of an interdigital structure is preferable.
図２にメタマテリアルの具体例を示す。
ラセン状構造を有するメタマテリアルの具体例としては、弦巻型らせん構造を有するメタマテリアル（図２（ａ））、渦巻き型らせん構造を有するメタマテリアル（図２（ｂ））が挙げられる。また、すだれ構造積層体からなるメタマテリアル（図２（ｃ））も、立体的ねじれ構造を有するメタマテリアルとして好適である。図２（ｃ）のすだれ構造積層体からなるメタマテリアルは、すだれ状構造体の積層体であって、各層のすだれ状構造体が、光の進行方向、すなわち厚み方向に対して、一定の角度でねじれて積層されている。
FIG. 2 shows a specific example of the metamaterial.
Specific examples of the metamaterial having a helical structure include a metamaterial having a wound spiral structure (FIG. 2 (a)) and a metamaterial having a spiral spiral structure (FIG. 2 (b)). In addition, a metamaterial (see FIG. 2 (c)) made of an interdigital structure is also suitable as a metamaterial having a three-dimensional twisted structure. The metamaterial consisting of the interdigital structure laminate of FIG. 2 (c) is a laminate of interdigital structures, and the interdigital structure of each layer has a certain angle with respect to the light traveling direction, that is, the thickness direction. Is twisted and stacked.
メタマテリアルは、擬平面ねじれ構造を有するメタマテリアルであっても好ましい
ここで「擬平面ねじれ構造」とは、平面構造にねじれを導入したものを意味する。擬平面ねじれ構造を有するメタマテリアルも、立体的ねじれ構造を有するメタマテリアルと同様に、入射光のうち、右回り円偏光を減衰させ左回り円偏光を透過させる、又は、入射光のうち、左回り円偏光を減衰させ右回り円偏光を透過させることができる。
擬平面ねじれ構造を有するメタマテリアルの具体例としては、卍型構造を有するメタマテリアル（図２（ｄ））などが挙げられる。
A metamaterial is preferable even if it is a metamaterial which has a quasi-plane twist structure. Here, "pseudo-plane twist structure" means what introduce | transduced the twist into the plane structure. Similarly to the metamaterial having a three-dimensional twist structure, a metamaterial having a pseudo-plane twist structure attenuates right-handed circularly polarized light and transmits left-handed circularly polarized light among incident light, or left of incident light The circularly polarized light can be attenuated and the clockwise circularly polarized light can be transmitted.
As a specific example of the metamaterial having a pseudo-plane twist structure, a metamaterial having a wedge-shaped structure (FIG. 2 (d)) and the like can be mentioned.
尚、擬平面ねじれ構造を有するメタマテリアルの旋光性は、二次元平面上のねじれ構造にのみ由来するものではなく、厚み方向の非対称性（例えば、メタマテリアルの片方の面が空気に接し、一方の面が基板に接すること）によってもたらされる立体的な鏡像非対称性によるとされている（Ｍ． Ｋｕｗａｔａ−Ｇｏｎｏｋａｍｉ 他、Ｐｈｙｓｉｃａｌ Ｒｅｖｉｅｗ Ｌｅｔｔｅｒｓ、Ｖｏｌ． ９５、ｐ−２２７４０１、２００５年）。
擬平面ねじれ構造のメタマテリアルを用いることで、偏光面の回転、楕円偏光の生成等の偏光操作が可能となる。擬平面ねじれ構造のメタマテリアルの機能は、ショ糖溶液のような、光学活性媒質に類似している。
The optical rotatory power of the metamaterial having a pseudo plane twisting structure is not derived only from the twisting structure on a two-dimensional plane, but the asymmetry in the thickness direction (for example, one side of the metamaterial contacts air), (M. Kuwata-Gonokami et al., Physical Review Letters, Vol. 95, p-227401, 2005).
By using a metamaterial having a pseudo plane twist structure, polarization operations such as rotation of polarization plane and generation of elliptical polarization become possible. The function of metamaterials with pseudo-planar twist structure is similar to optically active media, such as sucrose solution.
図２（ａ）の弦巻型らせん構造を有するメタマテリアルは、Ｊ．Ｋ．Ｇａｎｓｅｌ他、Ｓｃｉｅｎｃｅ、Ｖｏｌ．３２５、Ｎｏ．１８、ｐ１５１３、２００９年に開示がある。
図２（ｂ）の渦巻き型ラセン構造を有するメタマテリアルは、Ｔ．Ｋａｎ他、Ｎａｔｕｒｅ Ｃｏｍｍｕｎｉｃａｔｉｏｎｓ、｜３：９６９｜ＤＯＩ：１０．１０３８｜ｎｃｏｍｍｓ１９７６、Ｐｕｂｌｉｓｈｅｄ ２４ Ｊｕｌ．２０１２年に開示がある。
図２（ｃ）のすだれ状構造体の積層体のメタマテリアルは、Ｓ．Ｔａｋａｈａｓｈｉ他、Ｏｐｔｉｃｓ Ｅｘｐｒｅｓｓ，Ｖｏｌ．２４，２０１３年｜ＤＯＩ：１０．１３６４／ＯＥ．２１．０２９９０５に開示ある。
図２（ｄ）の卍型構造を有するメタマテリアルは、Ｍ． Ｋｕｗａｔａ−Ｇｏｎｏｋａｍｉ 他、Ｐｈｙｓｉｃａｌ Ｒｅｖｉｅｗ Ｌｅｔｔｅｒｓ、Ｖｏｌ． ９５、ｐ−２２７４０１、２００５年に開示がある。
The metamaterial having the spiral wound helical structure of FIG. K. Gansel et al., Science, Vol. 325, no. 18, p 1513, 2009.
The metamaterial having the spiral type helical structure of FIG. Kan et al., Nature Communications, | 3: 969 | DOI: 10.1038 | ncomms1976, Published 24 Jul. There is a disclosure in 2012.
The metamaterial of the stack of the interdigital structure of FIG. Takahashi et al., Optics Express, Vol. 24, 2013 | DOI: 10.1364 / OE. It is disclosed in 21.029905.
The metamaterial having the template structure shown in FIG. Kuwata-Gonokami et al., Physical Review Letters, Vol. 95, p-227401, disclosed in 2005.
メタマテリアルの大きさは、可視光の波長（４００〜７８０ｎｍ）より小さく設定するとよい。
図２（ａ）の弦巻型らせん構造を有するメタマテリアルを開示する文献（Ｊ．Ｋ．Ｇａｎｓｅｌ ｅｔ ａｌ，Ｓｃｉｅｎｃｅ、Ｖｏｌ．３２５、Ｎｏ．１８、ｐ１５１３、２００９年）では、赤外領域の波長（３〜５μｍ）での動作を目的として、メタマテリアルの直径を１μｍ以下としている。本態様の円偏光吸収フィルタは、可視光の波長（４００〜７８０ｎｍ）での動作を目的とするので、メタマテリアルの基板水平方向の最大幅をＤ、メタマテリアルの基板垂直方向の高さをＬとしたとき、Ｌ及びＤは、それぞれ４０ｎｍ〜３９０ｎｍとすると好ましい。図１に、弦巻型らせん構造を有するメタマテリアルの高さＬ及び直径Ｄを示す。
Ｌ及びＤが３９０ｎｍ超の場合、可視光域全域での均一な円偏光との相互作用が得られず、波長依存性が生じたり、十分な減衰特性が得られないおそれがある。一方、Ｌ及びＤが４０ｎｍ未満の場合、微細構造のメタマテリアルを製造することが困難になり、製造コスト増加等の問題が生じるおそれがある。
The size of the metamaterial may be set smaller than the wavelength of visible light (400 to 780 nm).
In the document (JK Gansel et al, Science, Vol. 325, No. 18, p 1513, 2009) disclosing a metamaterial having a wound spiral structure as shown in FIG. For the purpose of operation at 3 to 5 μm, the diameter of the metamaterial is 1 μm or less. The circularly polarized light absorption filter of this embodiment aims at operation at the wavelength of visible light (400 to 780 nm), so the maximum width of the metamaterial in the substrate horizontal direction is D, and the height of the metamaterial in the substrate vertical direction is L And L and D are preferably 40 nm to 390 nm, respectively. FIG. 1 shows the height L and diameter D of a metamaterial having a wound spiral structure.
When L and D are more than 390 nm, interaction with uniform circularly polarized light in the entire visible light range can not be obtained, and there is a possibility that wavelength dependence may occur or sufficient attenuation characteristics may not be obtained. On the other hand, when L and D are less than 40 nm, it becomes difficult to manufacture a microstructured metamaterial, which may cause problems such as an increase in manufacturing cost.
基板上にメタマテリアルが等間隔Ｐ（ピッチＰ）で周期的に複数形成されている場合、当該ピッチＰは４０ｎｍ〜３９０ｎｍとすると好ましい。図１に、基板上の弦巻型らせん構造を有するメタマテリアルのピッチＰを示す。
ピッチＰが３９０ｎｍ超の場合、可視光域全域での均一な円偏光との相互作用が得られず、波長依存性が生じたり、十分な減衰特性が得られないおそれがある。一方、ピッチＰが４０ｎｍ未満の場合、メタマテリアルの形成が困難になり、製造コスト増加等の問題が生じるおそれがある。
In the case where a plurality of metamaterials are periodically formed at equal intervals P (pitch P) on a substrate, the pitch P is preferably 40 nm to 390 nm. FIG. 1 shows the pitch P of a metamaterial having a wound spiral structure on a substrate.
When the pitch P is more than 390 nm, interaction with uniform circularly polarized light in the entire visible light range can not be obtained, and there is a possibility that wavelength dependency may occur or sufficient attenuation characteristics may not be obtained. On the other hand, if the pitch P is less than 40 nm, formation of the metamaterial becomes difficult, which may cause problems such as an increase in manufacturing cost.
メタマテリアルの材質は、導電性材料であれば特に限定されず、当該導電性材料としては、金属、導電性酸化物、及びカーボンナノチューブ、グラフェン等の導電性炭素材料が挙げられる。これらのうち、メタマテリアルは、金、銀、銅、鉄、アルミニウム、チタン、タングステン、こられの合金、及びこれら金属の組み合わせからなるメタマテリアルであると好ましい。 The material of the metamaterial is not particularly limited as long as it is a conductive material, and examples of the conductive material include metals, conductive oxides, and conductive carbon materials such as carbon nanotubes and graphene. Among these, the metamaterial is preferably a metamaterial composed of gold, silver, copper, iron, aluminum, titanium, tungsten, these alloys, and a combination of these metals.
メタマテリアルは、損失要素を含む。
例えば立体的ねじれ構造を有するメタマテリアルは、一般的にねじれのヘリシティに一致する円偏光成分と相互作用して、当該円偏光成分を反射し、反対回りの円偏光成分を通過させる。これは、コレステリック液晶における選択反射と類似の動作である。反射成分を生じるため、損失要素を含まない円偏光吸収フィルタは、そのままでは反射抑制として機能しない。
メタマテリアルが損失要素を含むことで、左右非対称な相互作用によって生成する電流を減衰させることができる。
Metamaterials include loss elements.
For example, a metamaterial having a steric twisted structure interacts with a circularly polarized component that generally matches the helicity of the twist to reflect that circularly polarized component and pass the counter-rotating circularly polarized component. This is an operation similar to selective reflection in cholesteric liquid crystals. The circularly polarized light absorption filter that does not include the loss element does not function as reflection suppression as it is because it generates a reflection component.
When the metamaterial includes a loss element, it is possible to attenuate the current generated by the asymmetrical interaction.
損失要素を含むメタマテリアルとしては、抵抗体と電気的に接続したメタマテリアル、又は透明導電性媒体で被覆したメタマテリアルが好ましい。
図３に損失要素を備えるメタマテリアルの一実施形態を示す。
図３（ａ）は、弦巻型らせん構造を有するメタマテリアルが抵抗体（導電性ポスト３０）と電気的に接続しており、図３（ｂ）は、弦巻型らせん構造を有するメタマテリアルが透明導電性媒体３２で被覆されている。
As a metamaterial containing a loss element, a metamaterial electrically connected to a resistor or a metamaterial coated with a transparent conductive medium is preferable.
FIG. 3 illustrates one embodiment of a metamaterial with loss elements.
In FIG. 3 (a), a metamaterial having a wound spiral structure is electrically connected to a resistor (conductive post 30), and in FIG. 3 (b), a metamaterial having a wound spiral structure is transparent. A conductive medium 32 is coated.
擬平面ねじれ構造を有するメタマテリアルの旋光性は、先に述べたショ糖のような光学活性媒体と同様の特性を示す。すなわち光相反性を示す。このため、入射光がメタマテリアルを通過し、偏光状態が変調を受けたあと（例えば、直線偏光が楕円偏光に変換される）、光学素子の反射層で反射され、再度メタマテリアルを逆方向に通過すると、偏光状態が入射前の状態にもどってしまうので、そのままでは反射抑制として機能しない。そこで、損失要素を導入することで相反性を回避し、反射抑制効果を発揮させることができる。このためには、例えば図２（ｄ）に示す卍型構造を有するメタマテリアルである場合、卍型の翼間を、適性な抵抗値を有する抵抗体を設けて橋渡しするとよい。 The optical rotatory power of the metamaterial having a pseudo planar twist structure exhibits the same characteristics as the optically active medium such as sucrose described above. That is, it shows photoreciprocity. For this reason, after the incident light passes through the metamaterial and the polarization state is modulated (e.g., linear polarization is converted to elliptical polarization), it is reflected by the reflection layer of the optical element, and the metamaterial is made to reverse again. When it passes through, the polarization state returns to the state before the incidence, so it does not function as reflection suppression as it is. Therefore, by introducing the loss element, the reciprocity can be avoided and the reflection suppressing effect can be exhibited. For this purpose, for example, in the case of a metamaterial having a wedge-shaped structure shown in FIG. 2D, it is preferable to provide a resistor having an appropriate resistance value to bridge between wedge-shaped wings.
損失要素の材質は、適当な導電性を示すものであれば特に限定されない。
損失要素が抵抗体である場合、メタマテリアルの材質と同じ材質を用いることができ、金属、導電性酸化物、及びカーボンナノチューブ、グラフェン等の導電性炭素材料が好ましい。
損失要素が透明導電性媒体である場合、例えば、ＩＴＯ、ＩＺＯ、ＺｎＯ、ＩＴＺＯ、ＡＺＯ等の金属酸化物；ポリアニリン、ポリピロール、ＰＥＤＯＴ／ＰＳＳ等の導電性高分子を用いることができる。
The material of the loss element is not particularly limited as long as it exhibits appropriate conductivity.
When the loss element is a resistor, the same material as that of the metamaterial can be used, and metals, conductive oxides, and conductive carbon materials such as carbon nanotubes and graphene are preferable.
When the loss element is a transparent conductive medium, for example, metal oxides such as ITO, IZO, ZnO, ITZO and AZO; conductive polymers such as polyaniline, polypyrrole and PEDOT / PSS can be used.
複数のメタマテリアルを形成する基板（ベース基板）は、柔軟性があり、薄く、均一で、光学異方性の少ない基板が好ましい。
上記ベース基板としては、例えばポリエチレンテレフタラート（ＰＥＴ）、ポリエチレンナフタレート（ＰＥＮ）、ポリエーテルサルフォン（ＰＥＳ）、ポリイミド等のポリマーフィルム、薄く柔軟なガラス基板を用いることができる。これらのうち、耐熱性と柔軟性に優れる透明ポリイミドからなるポリマーフィルムが好ましい。
The substrate (base substrate) on which a plurality of metamaterials are formed is preferably a flexible, thin, uniform, low optical anisotropy substrate.
As the base substrate, for example, polymer films such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyether sulfone (PES), polyimide and the like, and thin and flexible glass substrates can be used. Among these, a polymer film made of transparent polyimide excellent in heat resistance and flexibility is preferable.
本発明の円偏光吸収フィルタは、ベース基板を含まなくてもよい。例えば本発明の円偏光吸収フィルタを有機ＥＬ素子に用いる場合、有機ＥＬ素子を薄く柔軟にして、折り曲げを可能にするという観点から、ベース基板を用いずに、有機ＥＬ素子の光取出し面にメタマテリアルを直接形成すると好ましい。 The circularly polarized light absorption filter of the present invention may not include the base substrate. For example, in the case of using the circularly polarized light absorption filter of the present invention for an organic EL element, the light extraction surface of the organic EL element is meta not using a base substrate from the viewpoint of making the organic EL element thin and flexible and enabling bending. Preferably, the material is formed directly.
本発明の円偏光吸収フィルタは、公知の方法で製造することができる。損失要素を備えるメタマテリアルは、光リソグラフィ法、電子線リソグラフィ法、ナノインプリント法、リフトオフ法、真空蒸着法、スパッタリング法、反応性イオンエッチング法、化学気相成長法、収束イオンビーム法、インクジェット法、３Ｄプリンタ法、メッキ、ＤＮＡ等の生物鋳型を用いる自己組織化法、磁場配向を利用した自己組織化法、及びこれら方法を１以上組み合わせることで形成できる。 The circularly polarized light absorption filter of the present invention can be manufactured by a known method. Metamaterials equipped with loss elements include photolithography, electron beam lithography, nanoimprint, lift-off, vacuum evaporation, sputtering, reactive ion etching, chemical vapor deposition, focused ion beam, ink jet, A 3D printer method, plating, a self-assembly method using a biological template such as DNA, a self-assembly method using magnetic field orientation, and a combination of one or more of these methods can be used.
[光学素子及び有機ＥＬ素子]
本発明の円偏光吸収フィルタは、入射光のうち、右回り円偏光を減衰させ左回り円偏光を透過させる、又は、入射光のうち、左回り円偏光を減衰させ右回り円偏光を透過させることができる。本発明の円偏光吸収フィルタは、メタマテリアルのみで外光反射防止機能を発現することができるので、光学素子及び有機ＥＬ素子の円偏光吸収フィルタとして好適に用いることができる。
[Optical element and organic EL element]
The circularly polarized light absorption filter of the present invention attenuates right-handed circularly polarized light and transmits left-handed circularly polarized light among incident light, or attenuates left-handed circularly polarized light and transmits right-handed circularly polarized light among incident light. be able to. The circularly polarized light absorption filter of the present invention can exhibit an external light reflection preventing function only with a metamaterial, and therefore, can be suitably used as a circularly polarized light absorption filter of an optical element and an organic EL element.
光学素子に本発明の円偏光吸収フィルタを用いる場合、本発明の光学素子は、例えば本発明の円偏光吸収フィルタを、発光部位より視認側に設け、外光反射を減衰させることができる。
有機ＥＬ素子に本発明の円偏光吸収フィルタを用いる場合、本発明の有機ＥＬ素子は、本発明の円偏光吸収フィルタ、透明電極層、有機エレクトロルミネッセンス（ＥＬ）層及び反射層をこの順に含む。
When the circularly polarized light absorption filter of the present invention is used as an optical element, for example, the circularly polarized light absorption filter of the present invention can be provided closer to the viewing side than the light emitting portion to attenuate external light reflection.
When using the circularly polarized light absorption filter of this invention for an organic EL element, the organic EL device of this invention contains the circularly polarized light absorption filter of this invention, a transparent electrode layer, an organic electroluminescent (EL) layer, and a reflection layer in this order.
有機ＥＬ素子は、蛍光方式、りん光方式、ＴＡＤＦ方式などの各種発光機構が採用できる。
また、有機ＥＬ素子は、ボトムエミッション、トップエミッションなどの光学的構成は特に限定されず、いずれも採用でき；三色塗分けや白色カラーフィルタ法などのカラー化方式も特に限定されず、いずれも採用でき；有機ＥＬ層の基板側に陰極を配する逆積層構造、光取出し側とは反対側に反射層を積層する積層構造などの構造も特に限定されず、いずれも採用できる。
As the organic EL element, various light emitting mechanisms such as a fluorescence method, a phosphorescence method, and a TADF method can be adopted.
In addition, the organic EL device is not particularly limited in the optical configuration such as bottom emission and top emission, and any of them can be adopted; coloration methods such as three-color coating and white color filter method are not particularly limited either There is no particular limitation on the structure such as a reverse laminated structure in which the cathode is disposed on the substrate side of the organic EL layer, and a laminated structure in which the reflective layer is laminated on the opposite side to the light extraction side.
有機ＥＬ素子の有機ＥＬ層は、発光層を含めばよく、例えば正孔輸送層、正孔注入層、発光層、電子輸送層及び電子注入層、および必要に応じて、それらの任意の組み合せの積層構造を採用することができる。また複数の層を含む発光ユニットをさらに複数個積層したタンデム構造を採用することもできる。これら層の材料、厚み等は、公知の材料、公知の厚みが採用できる。 The organic EL layer of the organic EL device may include a light emitting layer, for example, a hole transport layer, a hole injection layer, a light emitting layer, an electron transport layer and an electron injection layer, and, if necessary, any combination thereof A laminated structure can be adopted. In addition, a tandem structure in which a plurality of light emitting units including a plurality of layers are further stacked can be employed. As materials, thicknesses and the like of these layers, known materials and known thicknesses can be adopted.
有機ＥＬ素子の反射層は、ミラー反射を生じることができる材料を含む層であれば、特に限定されない。反射層は、例えば、Ａｕ、Ａｇ、Ｃｕ、Ａｌ、Ｔｉ、Ｗ、これらの合金を含むとよく、これら金属もしくは合金からなるとよい。
有機ＥＬ素子の反射層は、駆動電極としての機能を有してもよい。駆動電極としても機能する反射層は、例えば、Ａｇ、Ｐｄ及びＣｕの合金からなる電極（ＡＰＣ電極）、Ｍｇ及びＡｇの合金からなる電極、及び金属とＩＴＯ等の透明導電酸化物からなる積層体電極が挙げられる。
The reflective layer of the organic EL element is not particularly limited as long as it is a layer containing a material capable of causing mirror reflection. The reflective layer may include, for example, Au, Ag, Cu, Al, Ti, W, and alloys of these, and may be made of these metals or alloys.
The reflective layer of the organic EL element may have a function as a drive electrode. The reflective layer which also functions as a drive electrode is, for example, an electrode (APC electrode) made of an alloy of Ag, Pd and Cu, an electrode made of an alloy of Mg and Ag, and a laminate made of a metal and a transparent conductive oxide such as ITO. An electrode is mentioned.
図４は、直線偏光板及び１／４波長板からなる従来の外光反射防止フィルタを有機ＥＬ素子に用いた場合の外光反射防止機構の原理を示す図である。図４中の「１」及び「０．５」は、入射光強度を１とした場合の概略の光強度を示す。
外光入射光は、無偏光、すなわちランダムな方向に偏光した直線偏光の集まりと見なせる。直線偏光板５０を通過した外光入射光はｙ軸方向（透過軸方向）に電界振動面を持つ直線偏光に整えられ、さらに１／４波長板６０を通過すると右回り円偏光に変換される。この時、１／４波長板６０の進相軸は、ｘ軸方向からｙ軸方向に向かって反時計回りに４５°の角度を成すように設定される。１／４波長板６０を出射した右回り円偏光は、有機ＥＬ層７０を通過し、反射層８０で反射し、反射光となる。この際、右回り円偏光は、左回り円偏光として反射され、再び有機ＥＬ層７０を通過した後、再度１／４波長板６０を通過する。これにより左回り円偏光は直線偏光に再変換されるが、出射光の偏光面がｘ軸方向となり、直線偏光板の透過軸（ｙ軸方向）に対して垂直になるため、直線偏光板５０で吸収されて外部には出射されない。
尚、１/４波長板６０の軸が−４５°に設定される場合は、入射直線偏光は左回り円偏光に変換されるが、上記の議論は、右回りと左回りを入れ替えれば、同様に成り立つ。
FIG. 4 is a view showing the principle of an external light reflection preventing mechanism in the case where a conventional external light reflection preventing filter consisting of a linear polarization plate and a quarter wavelength plate is used for an organic EL element. “1” and “0.5” in FIG. 4 indicate the approximate light intensity when the incident light intensity is 1.
Exterior light incident light can be regarded as non-polarized light, that is, a collection of linearly polarized light polarized in random directions. Outside light incident light that has passed through the linear polarization plate 50 is arranged to be linearly polarized light having an electric field vibrating surface in the y-axis direction (transmission axis direction), and is further converted to clockwise circularly polarized light when passing through a 1⁄4 wavelength plate 60 . At this time, the fast axis of the quarter-wave plate 60 is set to form an angle of 45 ° counterclockwise from the x-axis direction toward the y-axis direction. The clockwise circularly polarized light emitted from the 1⁄4 wavelength plate 60 passes through the organic EL layer 70, is reflected by the reflection layer 80, and becomes reflected light. At this time, the right-handed circularly polarized light is reflected as left-handed circularly polarized light, passes through the organic EL layer 70 again, and passes through the quarter-wave plate 60 again. As a result, the left-handed circularly polarized light is reconverted to linearly polarized light, but the plane of polarization of the outgoing light is in the x-axis direction, which is perpendicular to the transmission axis (y-axis direction) of the linearly polarizing plate. Absorbed and not emitted outside.
When the axis of the quarter-wave plate 60 is set to -45 °, the incident linearly polarized light is converted to left-handed circularly polarized light, but the above discussion similarly applies if the clockwise and the counterclockwise are interchanged. It holds true.
図５は、図４の有機ＥＬ素子の有機ＥＬ層で発光した光が、外光反射防止フィルタを透過して取り出される原理を示す図である。
有機ＥＬの発光は一般に概略無偏光であるが、偏光面の向きの異なる直線偏光の集合と考えることができ、それぞれの直線偏光は右回り円偏光と左回り円偏光の和と考えることができる。
図５において、有機ＥＬ層７０で発光した光（無偏光）は、反射層８０で反射される分も含めて、外光反射防止フィルタ方向（−z軸方向）に向かう光のうち、右回り円偏光は１/４波長板６０の通過にともないy軸方向の直線偏光に変換され、直線偏光板５０を通過して出射する。偏光板方向に向かう光のうち左回り円偏光は、１/４波長板６０の通過にともないx軸方向の直線偏光に変換されるので、直線偏光板５０で吸収され外に取り出すことはできない。
FIG. 5 is a view showing the principle of light emitted from the organic EL layer of the organic EL element of FIG. 4 being transmitted through the external light antireflection filter.
Although the light emission of organic EL is generally non-polarization generally, it can be considered as a set of linearly polarized light different in the direction of polarization plane, and each linearly polarized light can be considered as the sum of right-handed circular polarization and left-handed circular polarization .
In FIG. 5, the light (non-polarization) emitted by the organic EL layer 70, including the light reflected by the reflection layer 80, is clockwise among the light directed toward the external light reflection preventing filter direction (−z-axis direction) The circularly polarized light is converted into linear polarized light in the y-axis direction along with the passage of the 1⁄4 wavelength plate 60, and passes through the linear polarization plate 50 to be emitted. Of the light traveling in the polarizing plate direction, left-handed circularly polarized light is converted into linearly polarized light in the x-axis direction as it passes through the 1⁄4 wavelength plate 60, so it is absorbed by the linear polarizing plate 50 and can not be extracted outside.
図６は、本発明の円偏光吸収フィルタを有機ＥＬ素子に用いた場合の外光反射防止機構の原理を示す図である。図６中の「１」及び「０．５」は、入射光強度を１とした場合の概略の光強度を示す。また、図６では、円偏光吸収フィルタに左回り円偏光吸収フィルタを用いた場合を例示するが、右回り円偏光吸収フィルタを用いる場合においても、以下の議論は「左」と「右」を入れ替えることで同様に成り立つ。
外光入射光は、無偏光、すなわちランダムな方向に偏光した直線偏光の集まりと見なせる。個々の直線偏光は、それぞれ強度の等しい右回り円偏光と左回り円偏光の和と考えられる。外光入射光のうち、右回り円偏光の成分は、円偏光吸収フィルタ９０とは相互作用せず、通過する。一方、左回り円偏光は円偏光吸収フィルタ９０によって吸収され、損失要素によって熱に変換され、減衰する。円偏光吸収フィルタ９０を通過した右回り円偏光は、有機ＥＬ層７０を通過した後、反射層８０に達する。反射層８０で反射された右回り円偏光は、左回り円偏光に変換され、有機ＥＬ層７０を再度通過したあと、円偏光吸収フィルタ９０で吸収され、減衰する。
FIG. 6 is a view showing the principle of an external light reflection preventing mechanism when the circularly polarized light absorption filter of the present invention is used for an organic EL element. “1” and “0.5” in FIG. 6 indicate the approximate light intensity when the incident light intensity is 1. Moreover, although the case where a left-handed circularly polarized light absorption filter is used as a circularly polarized light absorption filter is illustrated in FIG. 6, even in the case where a right-handed circularly polarized light absorption filter is used, the following discussion is made on “left” and “right” The same holds true for the replacement.
Exterior light incident light can be regarded as non-polarized light, that is, a collection of linearly polarized light polarized in random directions. Each linearly polarized light is considered to be the sum of right-handed circularly polarized light and left-handed circularly polarized light of equal intensity. The component of right-handed circularly polarized light in the ambient light incident light passes through without interacting with the circularly polarized light absorption filter 90. On the other hand, left-handed circularly polarized light is absorbed by the circularly polarized light absorption filter 90, converted to heat by the loss element, and attenuated. The clockwise circularly polarized light that has passed through the circularly polarized light absorption filter 90 reaches the reflective layer 80 after passing through the organic EL layer 70. The right-handed circularly polarized light reflected by the reflective layer 80 is converted to left-handed circularly polarized light, passes through the organic EL layer 70 again, is absorbed by the circularly polarized light absorption filter 90, and is attenuated.
図７は、図６の有機ＥＬ素子の有機ＥＬ層で発光した光が、円偏光吸収フィルタを透過して取り出される原理を示す図である。
有機ＥＬの発光は概略無偏光であり、当該無偏光は、右回り円偏光と左回り円偏光の和と考えることができる。図７において、有機ＥＬ層７０で発光した光（無偏光）は、反射層８０で反射される分も含めて、円偏光吸収フィルタ方向（−z軸方向）に向かう光のうち、右回り円偏光成分は円偏光吸収フィルタ９０を通過して外に取り出すことができるが、左回り円偏光は吸収を受け、減衰する。
本発明の円偏光吸収フィルタを備える有機ＥＬ素子を、直線偏光板及び１／４波長板からなる外光反射防止フィルタを備える有機ＥＬ素子と比較した場合、ＥＬの発光の概略半分を取り出す点で共通するが、外光反射防止フィルタを薄型化でき、有機ＥＬ素子に柔軟性や屈曲性を与えることができる。
FIG. 7 is a view showing the principle of light emitted from the organic EL layer of the organic EL element of FIG. 6 being transmitted through the circularly polarized light absorption filter.
The light emission of the organic EL is approximately non-polarization, and the non-polarization can be considered as the sum of right-handed circular polarization and left-handed circular polarization. In FIG. 7, the light (non-polarized light) emitted by the organic EL layer 70, including the light reflected by the reflection layer 80, is a right-handed circle among the light directed toward the circularly polarized light absorption filter direction (−z axis direction) The polarization component can pass out of the circular polarization absorption filter 90 and can be taken out, but the left-handed circularly polarized light is absorbed and attenuated.
As compared with the organic EL element provided with the circularly polarized light absorption filter of the present invention and the organic EL element provided with an external light antireflective filter comprising a linear polarizing plate and a quarter wavelength plate, approximately half of the luminescence of EL is taken out Although common, the external light reflection preventing filter can be thinned, and the organic EL element can be provided with flexibility and flexibility.
外光入射光及び有機ＥＬ層で発光した光が、円偏光吸収フィルタによって、右回り円偏光が減衰して左回り円偏光が透過する、又は、左回り円偏光が減衰して右回り円偏光が透過する原理は、ジョーンズ行列を用いて説明することができる。
具体的には、ｘ軸方向の直線偏光ｅｘ及びｙ方向の直線偏光ｅｙを基底ベクトルとしたとき、任意の偏光Ｅは、ｅｘとｅｙの線形結合で表すことができる。
Ｅ＝ｖｘｅｘ＋ｖｙｅｙ （１）
同様に、右円偏光及び左円偏光ｅＲ及びｅＬもまた基底ベクトルを構成し、任意の偏光Ｅは、ｅＲとｅＬの線形結合で表すことができる。
Ｅ＝ｖＲｅＲ＋ｖＬｅＬ （２）
（ｖｘ，ｖｙ）系と（ｖＲ，ｖＬ）系は、相互に変換可能である。その変換式は、以下のようである。
（ｖＲ，ｖＬ）系において、左回り円偏光吸収フィルタのジョーンズ行列は、下記で表される（ここでは、左回り円偏光が完全に吸収されるとした）。
偏光面の角度がｘ軸から反時計方向にθ回転した直線偏光のジョーンズベクトルは、（ｃｏｓθ、ｓｉｎθ）と書ける。これが左回り円偏光吸収フィルタを通過すると、下記となる。
Specifically, when the base vectors of linearly polarized light e y of the linear polarization e x and y direction of the x-axis direction, any polarization E can be represented by a linear combination of e x and e y.
E = v x e x + v y e y (1)
Similarly, right circular polarization and left circular polarization e R and e L also constitute basis vectors, and any polarization E can be represented by a linear combination of e R and e L.
E = v R e R + v L e L (2)
The (v x , v y ) and (v R , v L ) systems are mutually convertible. The conversion equation is as follows.
In the (v R , v L ) system, the Jones matrix of the left-handed circularly polarized light absorption filter is expressed as follows (here, it is assumed that left-handed circularly polarized light is completely absorbed).
The Jones vector of linearly polarized light whose polarization plane angle is rotated by θ from the x axis in the counterclockwise direction can be written as (cos θ, sin θ). When this passes through the left-handed circularly polarized light absorption filter, it becomes as follows.
図９は、本発明の一態様に係る有機ＥＬ素子の一実施形態を示す概略断面図である。
図９の有機ＥＬ素子１００は、フレキシブル基板１１０、平坦化層１２０、反射層１３０、透明陽極１４０、正孔注入層１５０、正孔輸送層１６０、発光層１７０、電子輸送層１８０、透明陰極１９０及び円偏光吸収フィルタ２００がこの順に積層している。また、平坦化層１２０は、駆動素子２３０を含む。
図９において、正孔注入層１５０、正孔輸送層１６０、発光層１７０及び電子輸送層１８０の積層部分は、発光に関与する有機ＥＬ層２１０であり、反射層１３０、透明陽極１４０、有機ＥＬ層２１０、透明陰極１９０は、封止層２２０で固体封止されている。
有機ＥＬ素子１００は、円偏光吸収フィルタ２００から光を取り出す、トップエミッション型の有機ＥＬ素子である。
FIG. 9 is a schematic cross-sectional view showing an embodiment of the organic EL element according to one aspect of the present invention.
The organic EL device 100 of FIG. 9 includes the flexible substrate 110, the flattening layer 120, the reflective layer 130, the transparent anode 140, the hole injection layer 150, the hole transport layer 160, the light emitting layer 170, the electron transport layer 180, and the transparent cathode 190. And the circularly polarized light absorption filter 200 is laminated in this order. In addition, the planarization layer 120 includes a drive element 230.
In FIG. 9, the laminated portion of the hole injection layer 150, the hole transport layer 160, the light emitting layer 170 and the electron transport layer 180 is the organic EL layer 210 involved in light emission, and the reflective layer 130, the transparent anode 140, the organic EL The layer 210 and the transparent cathode 190 are solid-sealed by the sealing layer 220.
The organic EL element 100 is a top emission type organic EL element that extracts light from the circularly polarized light absorption filter 200.
有機ＥＬ素子１００において、発光層１７０で発光した光は、直接透明陰極１９０を透過して、円偏光吸収フィルタ２００で一部吸収されて通過して取り出される、及び反射層１３０で反射して透明陰極１９０を透過し、円偏光吸収フィルタ２００で一部吸収されて通過して取り出される、の２つのルートで光が取り出される。
また、有機ＥＬ素子１００外から入ってくる外光は、入射時に円偏光吸収フィルタ２００で一部が吸収され、残った外光の一部も反射層１３０で反射して直接透明陰極１９０を透過し、円偏光吸収フィルタ２００で再度吸収される。
In the organic EL element 100, the light emitted from the light emitting layer 170 is directly transmitted through the transparent cathode 190, partially absorbed by the circularly polarized light absorption filter 200, taken out through it, and reflected by the reflective layer 130 to be transparent. The light is extracted through two routes, which are transmitted through the cathode 190 and partially absorbed by the circularly polarized light absorption filter 200 and passed out.
In addition, external light entering from outside the organic EL element 100 is partially absorbed by the circularly polarized light absorption filter 200 at the time of incidence, and a part of the remaining external light is also reflected by the reflective layer 130 and directly transmitted through the transparent cathode 190 And is absorbed again by the circularly polarized light absorption filter 200.
［光学素子及び有機ＥＬ素子の製造方法］
本発明の円偏光吸収フィルタは、転写することで光学素子及び有機ＥＬ素子に積層することができる。
本発明の光学素子の製造方法は、キャリア基板上に複数のメタマテリアルを形成して、複数のメタマテリアルからなるメタマテリアル構造を含むメタマテリアル積層体を製造し、光学素子の光取出し側の最表面と円偏光吸収フィルタのメタマテリアル構造を転写法によって接合し、キャリア基板を剥離する。
本発明の有機ＥＬ素子の製造方法は、キャリア基板上に複数のメタマテリアルを形成して、複数のメタマテリアルからなるメタマテリアル構造を含むメタマテリアル積層体を製造し、透明電極層、有機エレクトロルミネッセンス層及び反射層を含む積層体の透明電極層とメタマテリアル積層体のメタマテリアル構造を転写法によって接合し、キャリア基板を剥離する。
[Method of Manufacturing Optical Element and Organic EL Element]
The circularly polarized light absorption filter of the present invention can be laminated on an optical element and an organic EL element by transferring.
In the method of manufacturing an optical element according to the present invention, a plurality of metamaterials are formed on a carrier substrate to manufacture a metamaterial laminate including a metamaterial structure composed of a plurality of metamaterials. The surface and the metamaterial structure of the circularly polarized light absorption filter are bonded by a transfer method, and the carrier substrate is peeled off.
In the method of manufacturing an organic EL device according to the present invention, a plurality of metamaterials are formed on a carrier substrate to manufacture a metamaterial laminate including a metamaterial structure comprising a plurality of metamaterials, and a transparent electrode layer, organic electroluminescence The transparent electrode layer of the laminate including the layer and the reflective layer and the metamaterial structure of the metamaterial laminate are bonded by a transfer method, and the carrier substrate is peeled off.
図１０は、本発明の有機ＥＬ素子の製造方法のプロセスの一実施形態を示す図である。
まず、キャリア基板３１０上に複数のメタマテリアルからなるメタマテリアル構造３００を形成して、メタマテリアル積層体を製造する。
製造したメタマテリアル積層体のメタマテリアル構造３００側を、別途作製した、透明電極層１９０、有機ＥＬ層２１０、反射層１３０及びフレキシブル基板１００からなる積層体の透明電極１９０上に転写する。転写後、キャリア基板３１０を剥離する。剥離後、メタマテリアル構造３００上に保護層３２０を形成してもよい。
FIG. 10 is a view showing an embodiment of a process of the method of manufacturing an organic EL element of the present invention.
First, a metamaterial structure 300 composed of a plurality of metamaterials is formed on a carrier substrate 310 to manufacture a metamaterial laminate.
The metamaterial structure 300 side of the manufactured metamaterial laminate is transferred onto the transparent electrode 190 of a laminate formed of the transparent electrode layer 190, the organic EL layer 210, the reflective layer 130, and the flexible substrate 100, which is separately prepared. After transfer, the carrier substrate 310 is peeled off. After peeling, a protective layer 320 may be formed on the metamaterial structure 300.
ベース基板及びメタマテリアル構造からなる積層体を、透明電極上に積層して円偏光吸収フィルタとする場合、ベース基板は光透過性を有することが求められるという制約がある。一方、メタマテリアル構造を転写して円偏光吸収フィルタとする場合、上記キャリア基板に特に制約は生じない。キャリア基板は、不透明なポリイミドフィルム、その他のポリマーフィルム、金属箔等を用いてもよい。 In the case where a laminate having a base substrate and a metamaterial structure is laminated on a transparent electrode to form a circularly polarized light absorption filter, there is a limitation that the base substrate is required to have optical transparency. On the other hand, when the metamaterial structure is transferred to form a circularly polarized light absorption filter, the carrier substrate is not particularly restricted. The carrier substrate may be opaque polyimide film, other polymer film, metal foil or the like.
基板を含まない複数のメタマテリアルからなる円偏光吸収フィルタは、ベース基板を含まないので薄型で柔軟性に優れ、また、光透過性に優れる。また、円偏光吸収フィルタが基板を含む場合であっても、直線偏光板及び１／４波長板からなる外光反射防止フィルタに比べて、薄型で柔軟性に優れ、また、光透過性に優れる有機ＥＬ素子の円偏光吸収フィルタを除く部分が可撓性を有するのであれば、有機ＥＬ素子全体として屈曲性に富み、折り曲げも可能となる。 A circularly polarized light absorption filter consisting of a plurality of metamaterials not including a substrate is thin and excellent in flexibility and excellent in light transmittance since it does not include a base substrate. In addition, even when the circularly polarized light absorption filter includes a substrate, it is thinner, has excellent flexibility, and is excellent in light transmittance as compared with the external light reflection preventing filter including the linear polarizing plate and the quarter wavelength plate. If the portion excluding the circularly polarized light absorption filter of the organic EL element has flexibility, the organic EL element as a whole is rich in flexibility and can be bent.
以上、本発明を実施形態によって説明したが、本発明はこれらに限定されるものではなく、本発明の要旨の範囲内で種々の変形が可能である。本発明は、実施形態で説明した構成と実質的に同一の構成（例えば、機能、方法及び結果が同一の構成、あるいは目的及び効果が同一の構成）を包含する。また本発明は、上記の実施形態で説明した構成の本質的でない部分を他の構成に置き換えた構成を包含する。さらに本発明は、上記の実施形態で説明した構成と同一の作用効果を奏する構成又は同一の目的を達成することができる構成をも包含する。さらに本発明は、上記の実施形態で説明した構成に公知技術を付加した構成をも包含する。 As mentioned above, although this invention was demonstrated by embodiment, this invention is not limited to these, A various deformation | transformation is possible within the range of the summary of this invention. The present invention encompasses configurations substantially the same as the configurations described in the embodiments (for example, configurations having the same function, method and result, or configurations having the same purpose and effect). The present invention also encompasses configurations in which non-essential parts of the configurations described in the above embodiments are replaced with other configurations. Furthermore, the present invention also encompasses configurations that can achieve the same effects or the same objects as the configurations described in the above embodiments. Furthermore, the present invention also encompasses a configuration in which a known technique is added to the configuration described in the above embodiment.
１ 円偏光吸収フィルタ
１０ 基板
２０ メタマテリアル
３０ 導電性ポスト
４０ 透明導電性媒体
５０ 直線偏光板
６０ １／４波長板
７０ 有機ＥＬ層
８０ 反射層
９０ 円偏光吸収フィルタ
１００ 有機ＥＬ素子
１１０ フレキシブル基板
１２０ 平坦化層
１３０ 反射層
１４０ 透明陽極
１５０ 正孔注入層
１６０ 正孔輸送層
１７０ 発光層
１８０ 電子輸送層
１９０ 透明陰極
２００ 円偏光吸収フィルタ
２１０ 有機ＥＬ層
２２０ 封止層
２３０ 駆動素子
３００ メタマテリアル構造
３１０ キャリア基板
３２０ 保護層
Reference Signs List 1 circularly polarized light absorption filter 10 substrate 20 metamaterial 30 conductive post 40 transparent conductive medium 50 linear polarization plate 60 quarter wavelength plate 70 organic EL layer 80 reflective layer 90 circularly polarized light absorption filter 100 organic EL element 110 flexible substrate 120 flat Layer 130 reflective layer 140 transparent anode 150 hole injection layer 160 hole transport layer 170 light emitting layer 180 electron transport layer 190 transparent cathode 200 circularly polarized light absorption filter 210 organic EL layer 220 sealing layer 230 driving element 300 metamaterial structure 310 carrier Substrate 320 protective layer
Claims (13)
前記メタマテリアルが、損失要素を含むメタマテリアルである円偏光吸収フィルタ。 A circularly polarized light absorption filter comprising a metamaterial exhibiting optical activity, comprising:
The circularly polarized light absorption filter, wherein the metamaterial is a metamaterial including a loss element.
前記メタマテリアルの前記基板水平方向の最大幅をＤ、前記メタマテリアルの前記基板垂直方向の高さをＬとしたとき、Ｄ、Ｌ及びＰがいずれも４０ｎｍ〜３９０ｎｍである請求項１〜６のいずれかに記載の円偏光吸収フィルタ。 A plurality of the metamaterials are periodically formed on the substrate at equal intervals P,
The maximum width of the metamaterial in the horizontal direction of the substrate is D, and the height of the metamaterial in the vertical direction of the substrate is L, all of D, L and P are 40 nm to 390 nm. The circularly polarized light absorption filter as described in any one.
光学素子の発光部位に前記メタマテリアル積層体のメタマテリアル構造を転写法によって接合し、前記キャリア基板を剥離する光学素子の製造方法。 Forming a plurality of metamaterials on a carrier substrate to produce a metamaterial laminate including a metamaterial structure composed of the plurality of metamaterials;
The manufacturing method of the optical element which joins the metamaterial structure of the said metamaterial laminated body to the light emission site | part of an optical element by the transfer method, and peels off the said carrier substrate.
透明電極層、有機エレクトロルミネッセンス層及び反射層を含む積層体の前記透明電極層と前記メタマテリアル積層体のメタマテリアル構造を転写法によって接合し、前記キャリア基板を剥離する有機エレクトロルミネッセンス素子の製造方法。 Forming a plurality of metamaterials on a carrier substrate to produce a metamaterial laminate including a metamaterial structure composed of the plurality of metamaterials;
A method of manufacturing an organic electroluminescent device, comprising bonding the transparent electrode layer of a laminate including a transparent electrode layer, an organic electroluminescent layer and a reflective layer to the metamaterial structure of the metamaterial laminate by a transfer method and peeling off the carrier substrate .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017191099A JP2019066633A (en) | 2017-09-29 | 2017-09-29 | Circularly polarized light absorption filter, optical element including the circularly polarized light absorption filter, and organic el element including the circularly polarized light absorption filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017191099A JP2019066633A (en) | 2017-09-29 | 2017-09-29 | Circularly polarized light absorption filter, optical element including the circularly polarized light absorption filter, and organic el element including the circularly polarized light absorption filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2019066633A true JP2019066633A (en) | 2019-04-25 |
Family
ID=66338279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2017191099A Pending JP2019066633A (en) | 2017-09-29 | 2017-09-29 | Circularly polarized light absorption filter, optical element including the circularly polarized light absorption filter, and organic el element including the circularly polarized light absorption filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2019066633A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019198760A1 (en) * | 2018-04-12 | 2019-10-17 | 国立研究開発法人理化学研究所 | Light-absorbing element, light-absorbing body, and method for manufacturing light-absorbing element |
| CN111650677A (en) * | 2020-07-06 | 2020-09-11 | 南京大学 | All-metal light absorber and preparation method thereof |
| KR20200136241A (en) * | 2019-05-27 | 2020-12-07 | 주식회사 엘지화학 | Organic light emitting diode |
| KR102235303B1 (en) * | 2019-10-04 | 2021-04-02 | 서울대학교산학협력단 | Method of fabricating metasurface having chiral nano patterns and optical devices having metalayer |
| CN114879386A (en) * | 2022-07-11 | 2022-08-09 | 华南师范大学 | Spin photon transmission regulation and control device based on pyramid helical line array metamaterial |
-
2017
- 2017-09-29 JP JP2017191099A patent/JP2019066633A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019198760A1 (en) * | 2018-04-12 | 2019-10-17 | 国立研究開発法人理化学研究所 | Light-absorbing element, light-absorbing body, and method for manufacturing light-absorbing element |
| JPWO2019198760A1 (en) * | 2018-04-12 | 2021-04-22 | 国立研究開発法人理化学研究所 | Light Absorber, Light Absorber, and Method for Manufacturing Light Absorber |
| JP7325122B2 (en) | 2018-04-12 | 2023-08-14 | 国立研究開発法人理化学研究所 | Light absorbing element, light absorber, and method for manufacturing light absorbing element |
| KR20200136241A (en) * | 2019-05-27 | 2020-12-07 | 주식회사 엘지화학 | Organic light emitting diode |
| KR102614365B1 (en) * | 2019-05-27 | 2023-12-14 | 주식회사 엘지화학 | Organic light emitting diode |
| KR102235303B1 (en) * | 2019-10-04 | 2021-04-02 | 서울대학교산학협력단 | Method of fabricating metasurface having chiral nano patterns and optical devices having metalayer |
| CN111650677A (en) * | 2020-07-06 | 2020-09-11 | 南京大学 | All-metal light absorber and preparation method thereof |
| CN114879386A (en) * | 2022-07-11 | 2022-08-09 | 华南师范大学 | Spin photon transmission regulation and control device based on pyramid helical line array metamaterial |
| CN114879386B (en) * | 2022-07-11 | 2022-09-23 | 华南师范大学 | Spin photon transmission regulation and control device based on pyramid helical line array metamaterial |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2019066633A (en) | Circularly polarized light absorption filter, optical element including the circularly polarized light absorption filter, and organic el element including the circularly polarized light absorption filter | |
| US10330842B2 (en) | Polarizer and display device comprising the same | |
| JP6565129B2 (en) | Image display device | |
| US10361401B2 (en) | Organic electroluminescent display device and display apparatus | |
| TW577243B (en) | Optoelectronic device and its manufacturing method and electronic equipment | |
| JP7386525B2 (en) | Circular dichroism filter, optical element, organic electroluminescent element, and method for producing circular dichroism filter | |
| TWI689851B (en) | Touch sensor with circular polarizer and image display device | |
| JP2017107177A (en) | Polarizing plate with phase difference layer and image display device | |
| TWI606580B (en) | Light-emitting display device | |
| CN107305928B (en) | Transparent conductive film and electronic device including the same | |
| TW200821681A (en) | Back light unit | |
| TW201519438A (en) | Light-emitting display device | |
| CN105445997A (en) | Liquid crystal display apparatus | |
| WO2017094530A1 (en) | Phase difference layer-provided polarizing plate and image display device | |
| JP2009021408A (en) | Organic el display device | |
| JP5291424B2 (en) | Absorption-type wire grid polarizer and liquid crystal display device | |
| JP5368011B2 (en) | Absorption type wire grid polarizer | |
| JP2009054902A (en) | Display device | |
| JP2007310052A (en) | Wavelength plate | |
| CN216622753U (en) | Circular polarizer for OLED display and OLED display | |
| EP3598519A1 (en) | Organic electroluminescent apparatus and electrode therefor | |
| JP2021189432A (en) | Circular dichroic filter, optical element, display, and method for producing circular dichroic filter | |
| JP2021105718A (en) | Image display device | |
| CN109065578B (en) | Display module and display device | |
| TWI782625B (en) | Method for manufacturing an optical display device |