JP2002156524A - Circularly polarizing plate, organic el light emitting device and liquid crystal display device - Google Patents
Circularly polarizing plate, organic el light emitting device and liquid crystal display deviceInfo
- Publication number
- JP2002156524A JP2002156524A JP2000352670A JP2000352670A JP2002156524A JP 2002156524 A JP2002156524 A JP 2002156524A JP 2000352670 A JP2000352670 A JP 2000352670A JP 2000352670 A JP2000352670 A JP 2000352670A JP 2002156524 A JP2002156524 A JP 2002156524A
- Authority
- JP
- Japan
- Prior art keywords
- organic
- polarizing plate
- circularly polarizing
- light emitting
- emitting device
- 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
Abstract
Description
【０００１】[0001]
【発明の技術分野】本発明は、ガスバリア性に優れる円
偏光板、及びそれを用いた外光の映り込みがなく薄型軽
量性や柔軟性に優れる有機ＥＬ発光装置、並びにそれを
バックライトに用いた表示品位に優れる液晶表示装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circularly polarizing plate excellent in gas barrier properties, an organic EL light emitting device using the same, which is excellent in thinness, lightness and flexibility without reflection of external light, and is used for a backlight. The present invention relates to a liquid crystal display device having excellent display quality.
【０００２】[0002]
【発明の背景】従来、電極間に有機ＥＬ（エレクトロル
ミネッセンス）材料からなる発光層を配置してなる有機
ＥＬ素子を用いた各種の発光装置が提案されている。有
機ＥＬ素子は、無機系のものよりも低電圧の印加で自己
発光し材料設計の自由度にも優れて薄層化も容易なこと
より、液晶表示装置のバックライトなどとしての面光源
装置として期待されている。しかしながら従来の有機Ｅ
Ｌ発光装置ではその薄さの故に外光が入射しやすく、背
面の金属電極で反射されて外光の映り込みが生じやすい
難点があった。BACKGROUND OF THE INVENTION Hitherto, various light emitting devices using an organic EL element in which a light emitting layer made of an organic EL (electroluminescence) material is arranged between electrodes have been proposed. Organic EL elements emit light when applied with a lower voltage than inorganic ones, and have excellent material design flexibility and are easy to thin, so they are used as surface light source devices as backlights for liquid crystal display devices. Expected. However, conventional organic E
The L light emitting device has a drawback in that external light is likely to enter due to its thinness, and is easily reflected by the metal electrode on the rear surface to cause reflection of the external light.
【０００３】前記に鑑みて有機ＥＬ発光装置の発光面に
円偏光板を配置して外光の映り込みを防止する技術が提
案されている（特開平８−３２１３８１号公報、特開平
９−１２７８８５号公報）。これは円偏光板を介し入射
外光を円偏光化し、それが背面の金属電極で反射される
際に円偏光の左右が逆転することを利用してその反射光
が円偏光板を透過できないようにしたものである。しか
しながら従来の偏光板と１／４波長板の積層体からなる
円偏光板を接着層を介して積層する方式では、厚さの増
大が大きくて薄型軽量の有機ＥＬ発光装置の利点、特に
柔軟性を損なう問題点があった。また気泡等の混入なく
接着することも困難で製造工程が複雑化したり、接着不
良によるロスが生じやすい問題点もあった。In view of the above, there has been proposed a technique of disposing a circularly polarizing plate on a light emitting surface of an organic EL light emitting device to prevent reflection of external light (JP-A-8-321381, JP-A-9-127885). No.). This makes the incident external light circularly polarized through the circularly polarizing plate, and makes use of the fact that the left and right sides of the circularly polarized light are reversed when it is reflected by the metal electrode on the back, so that the reflected light cannot pass through the circularly polarizing plate. It was made. However, in the conventional method of laminating a circularly polarizing plate composed of a laminate of a polarizing plate and a quarter-wave plate via an adhesive layer, the advantage of the organic EL light emitting device having a large increase in thickness and thinness and lightness, particularly flexibility. There was a problem that impaired. In addition, it is difficult to bond without inclusion of air bubbles and the like, so that the manufacturing process becomes complicated, and there is also a problem that loss due to poor bonding is likely to occur.
【０００４】[0004]
【発明の技術的課題】本発明は、円偏光板による外光の
映り込み防止を達成しつつ、薄型軽量の有機ＥＬ発光装
置の開発を課題とする。SUMMARY OF THE INVENTION An object of the present invention is to develop a thin and lightweight organic EL light-emitting device while preventing external light from being reflected by a circularly polarizing plate.
【０００５】[0005]
【課題の解決手段】本発明は、偏光子と、水蒸気透過率
が０．１ｇ・１００μm／ｍ２・日以下の１／４波長板
との積層体からなることを特徴とする円偏光板、その円
偏光板を有機ＥＬ素子の発光側に有することを特徴とす
る有機ＥＬ発光装置、及びその有機ＥＬ発光装置におけ
る円偏光板を介した偏光をバックライトとすることを特
徴とする液晶表示装置を提供するものである。According to the present invention, there is provided a circularly polarizing plate comprising a laminate of a polarizer and a quarter-wave plate having a water vapor transmission rate of 0.1 g · 100 μm / m 2 · day or less. An organic EL light-emitting device having the circularly polarizing plate on the light-emitting side of an organic EL element, and a liquid crystal display device using the polarized light via the circularly-polarizing plate in the organic EL light-emitting device as a backlight. Is provided.
【０００６】[0006]
【発明の効果】本発明によれば、円偏光板にて従来と同
様に外光の映り込みや背面電極によるギラツキを防止し
つつ、ガスバリア性に優れる１／４波長板を有すること
に基づいてそれを有機ＥＬ素子における電極基板等の形
成部材として組み込むことが可能となり、薄型軽量性や
柔軟性に優れる発光装置を形成することができる。また
斯かる有機ＥＬ発光装置の円偏光板を介し偏光を効率よ
く出射させることができ、その偏光をバックライトに用
いて高輝度等の表示品位に優れる液晶表示装置を形成す
ることができる。According to the present invention, based on the fact that a circularly polarizing plate has a quarter-wave plate which is excellent in gas barrier properties while preventing reflection of external light and glare due to a back electrode as in the prior art. It can be incorporated as a forming member such as an electrode substrate in an organic EL element, and a light-emitting device having excellent thinness, lightness, and flexibility can be formed. Further, polarized light can be efficiently emitted through the circularly polarizing plate of such an organic EL light emitting device, and a liquid crystal display device having excellent display quality such as high luminance can be formed by using the polarized light as a backlight.
【０００７】[0007]
【発明の実施形態】本発明による円偏光板は、偏光子
と、水蒸気透過率が０．１ｇ・１００μm／ｍ２・日以
下の１／４波長板との積層体からなる。その例を図１に
示した。１が円偏光板（積層体）であり、１１が偏光
子、１２が１／４波長板である。なお図は、有機ＥＬ発
光装置としたものを示しており、２は透明電極、３は正
孔注入輸送層、４は発光層、５は背面電極である。BEST MODE FOR CARRYING OUT THE INVENTION A circularly polarizing plate according to the present invention comprises a laminate of a polarizer and a quarter-wave plate having a water vapor transmission rate of 0.1 g · 100 μm / m 2 · day or less. An example is shown in FIG. 1 is a circularly polarizing plate (laminate), 11 is a polarizer, and 12 is a 波長 wavelength plate. The figure shows an organic EL light emitting device, wherein 2 is a transparent electrode, 3 is a hole injection / transport layer, 4 is a light emitting layer, and 5 is a back electrode.
【０００８】円偏光板を形成する偏光子としては、透過
光として直線偏光を得ることができる適宜なものを用い
うる。ちなみにその例としてはポリビニルアルコール系
フィルムや部分ホルマール化ポリビニルアルコール系フ
ィルム、エチレン・酢酸ビニル共重合体系部分ケン化フ
ィルムの如き親水性高分子フィルムにヨウ素及び／又は
二色性染料を吸着させて延伸したもの、ポリビニルアル
コールの脱水処理物やポリ塩化ビニルの脱塩酸処理物の
如きポリエン配向フィルム等からなる偏光フィルムなど
があげられる。またリオトロピック液晶性の二色性色素
や二色性色素含有のリオトロピック性物質などによる配
向塗工膜からなる偏光子などもあげられる。偏光子は、
前記偏光フィルムの片側又は両側に透明保護層を有する
ものであってもよい。As the polarizer forming the circularly polarizing plate, an appropriate polarizer that can obtain linearly polarized light as transmitted light can be used. Incidentally, as an example, stretching is performed by adsorbing iodine and / or a dichroic dye on a hydrophilic polymer film such as a polyvinyl alcohol-based film, a partially formalized polyvinyl alcohol-based film, and an ethylene-vinyl acetate copolymer-based partially saponified film. And a polarizing film made of a polyene-oriented film, such as a dehydrated product of polyvinyl alcohol and a dehydrochlorinated product of polyvinyl chloride. Further, a polarizer composed of an alignment coating film made of a dichroic dye having a lyotropic liquid crystal or a lyotropic substance containing a dichroic dye may be used. The polarizer is
The polarizing film may have a transparent protective layer on one side or both sides.
【０００９】円偏光板を形成する１／４波長板として
は、水蒸気透過率が０．１ｇ・１００μm／ｍ２・日以
下のものが用いられる。これによりガスバリア性に優れ
る円偏光板とすることができて電極基板等の有機ＥＬ素
子の形成部材として用いることが可能となる。斯かる特
性の１／４波長板は、例えばポリカーボネートやポリビ
ニルアルコール、セルロース系樹脂やポリエステル（Ｐ
ＥＴやＰＥＮ等）、ポリアリレートやポリイミド、ノル
ボルネン系樹脂やポリスルホン、ポリエーテルスルホン
やポリプロピレンの如きポリオレフィンなどの延伸フィ
ルムからなる従来に準じたポリマーフィルム系の１／４
波長板の片面又は両面にガスバリア性を付与するための
無機薄膜層を設けることにより形成することができる。As a quarter-wave plate forming a circularly polarizing plate, a plate having a water vapor transmission rate of 0.1 g · 100 μm / m 2 · day or less is used. As a result, a circularly polarizing plate having excellent gas barrier properties can be obtained and can be used as a member for forming an organic EL element such as an electrode substrate. Quarter-wave plates having such characteristics include, for example, polycarbonate, polyvinyl alcohol, cellulose resin and polyester (P
ET, PEN, etc.), 1/4 of the conventional polymer film system consisting of stretched films of polyarylate, polyimide, norbornene-based resin, polysulfone, polyethers such as polyethersulfone and polypropylene.
It can be formed by providing an inorganic thin film layer for imparting gas barrier properties to one or both surfaces of the wave plate.
【００１０】またＣ２Ｘ４（ただしＸは、水素、塩素又
はフッ素である）をモノマーとし、水素の含有量が０個
又は１個のポリマーからなるフィルムにても前記したガ
スバリア特性の１／４波長板を得ることができる。その
１／４波長板は、斯かるポリマーからなるフィルムを従
来に準じ延伸処理して所定の位相差を持たせることによ
り得ることができるが、この場合には前記した無機薄膜
層を設けない場合にも前記したガスバリア特性をもたせ
ることができ、従って薄型化を図りうる利点がある。Also, a film made of a polymer containing C 2 X 4 (where X is hydrogen, chlorine or fluorine) as a monomer and having a hydrogen content of 0 or 1 is 1/100 of the gas barrier characteristic described above. A four-wave plate can be obtained. The quarter-wave plate can be obtained by subjecting a film made of such a polymer to a stretching treatment according to the related art so as to have a predetermined retardation. In this case, the case where the inorganic thin film layer is not provided is provided. In addition, there is an advantage that the gas barrier characteristics described above can be provided, and thus the thickness can be reduced.
【００１１】なお前記した無機薄膜層の形成には、１種
又は２種以上の適宜な無機材料を用いうる。透明性等の
点よりは酸化ケイ素や窒化ケイ素、又はインジウムスズ
酸化物の如き無機系透明導電膜材料などが好ましく用い
うる。また無機薄膜層の形成は、蒸着方式やスパッタリ
ング方式、塗工方式などの適宜な方式にて行うことがで
きる。なお前記したＣ２Ｘ４系ポリマーの延伸フィルム
からなる１／４波長板の場合にも必要に応じて無機薄膜
層を設けることができる。In the formation of the inorganic thin film layer, one or more appropriate inorganic materials can be used. From the viewpoint of transparency and the like, an inorganic transparent conductive film material such as silicon oxide, silicon nitride, or indium tin oxide can be preferably used. Further, the inorganic thin film layer can be formed by an appropriate method such as a vapor deposition method, a sputtering method, and a coating method. In the case of a １ ／ wavelength plate made of a stretched film of the above-mentioned C 2 X 4 polymer, an inorganic thin film layer can be provided as needed.
【００１２】円偏光板は、偏光子と１／４波長板を光軸
のズレ防止や界面への異物等の侵入防止等を目的に接着
層等を介して接着することにより得ることができる。そ
の接着には例えばホットメルト系や粘着系などの適宜な
透明接着剤を用いうる。光学特性の変化を防止する点な
どよりは硬化や乾燥に高温プロセスを要さず、長時間の
硬化や乾燥処理を要しないものが好ましく、また加熱や
加湿の条件下に浮きや剥がれ等の剥離問題を生じないも
のが好ましい。斯かる点より前記の接着処理には例えば
アクリル系やシリコーン系、ポリエステル系やポリウレ
タン系、ポリエーテル系やゴム系等の透明な粘着剤など
が好ましく用いうる。A circularly polarizing plate can be obtained by bonding a polarizer and a quarter-wave plate via an adhesive layer or the like for the purpose of preventing a deviation of an optical axis and a foreign substance from entering an interface. For the bonding, for example, a suitable transparent adhesive such as a hot-melt type or an adhesive type can be used. It is preferable that curing and drying do not require a high-temperature process and do not require prolonged curing or drying treatment, rather than preventing changes in optical properties, and peeling such as floating or peeling under heating or humidifying conditions. Those which do not cause a problem are preferred. From this point, a transparent adhesive such as acrylic, silicone, polyester, polyurethane, polyether, or rubber can be preferably used for the bonding treatment.
【００１３】特にメチル基やエチル基やブチル基等の炭
素数が２０以下のアルキル基を有する（メタ）アクリル
酸のアルキルエステルと、（メタ）アクリル酸や（メ
タ）アクリル酸ヒドロキシエチル等の改良成分からなる
アクリル系モノマーを、ガラス転移温度が０℃以下とな
る組合せにて共重合してなる、重量平均分子量が１０万
以上のアクリル系重合体をベースポリマーとするアクリ
ル系粘着剤などが好ましく用いられる。アクリル系粘着
剤は、透明性や耐候性や耐熱性などに優れる利点も有し
ている。Particularly, alkyl esters of (meth) acrylic acid having an alkyl group having 20 or less carbon atoms, such as methyl group, ethyl group and butyl group, and improvements of (meth) acrylic acid and hydroxyethyl (meth) acrylate Acrylic pressure-sensitive adhesives having an acrylic polymer having a weight average molecular weight of 100,000 or more as a base polymer, which is obtained by copolymerizing acrylic monomers composed of components in a combination having a glass transition temperature of 0 ° C. or lower, are preferable. Used. Acrylic pressure-sensitive adhesives also have the advantage of being excellent in transparency, weather resistance, heat resistance, and the like.
【００１４】粘着層の付設は、例えば粘着剤を流延方式
や塗工方式等の適宜な展開方式で偏光子又は／及び１／
４波長板の接着面上に直接付設する方式、あるいは前記
に準じセパレータ上に粘着層を形成してそれを１／４波
長板等の接着面上に移着する方式などの適宜な方式で行
うことができる。設ける粘着層は異なる組成又は種類等
のものの重畳層であってもよい。接着層の厚さは、接着
力等に応じて適宜に決定でき、一般には１〜５００μ
m、就中５〜１００μmとされる。The attachment of the pressure-sensitive adhesive layer may be performed, for example, by applying a pressure-sensitive adhesive to the polarizer and / or 1 /
It is performed by an appropriate method such as a method of directly attaching the adhesive layer on the four-wavelength plate, or a method of forming an adhesive layer on the separator and transferring it to the adhesive surface of a quarter-wave plate or the like according to the above. be able to. The provided adhesive layer may be a superimposed layer of different compositions or types. The thickness of the adhesive layer can be appropriately determined according to the adhesive force and the like, and is generally 1 to 500 μm.
m, especially 5 to 100 μm.
【００１５】有機ＥＬ発光装置は、有機ＥＬ素子の発光
側に円偏光板を配置することにより形成することができ
る。その場合、図例の如く円偏光板１の１／４波長板１
２が有機ＥＬ素子側となるように配置することが一般的
である。円偏光板としては有機ＥＬ発光装置の発光波長
に応じた１／４波長板を有するものが好ましく用いられ
る。円偏光板は、有機ＥＬ素子の透明電極を支持する電
極基板に粘着層等を介し接着して積層一体化する方式に
て用いることもできるし、図例の如く有機ＥＬ素子の電
極基板として用いることもできる。The organic EL light emitting device can be formed by disposing a circularly polarizing plate on the light emitting side of the organic EL element. In that case, as shown in FIG.
It is general that 2 is disposed on the organic EL element side. As the circularly polarizing plate, one having a quarter-wave plate corresponding to the emission wavelength of the organic EL light emitting device is preferably used. The circularly polarizing plate can be used in a method of bonding and laminating and integrating the electrode substrate supporting the transparent electrode of the organic EL element through an adhesive layer or the like, or as an electrode substrate of the organic EL element as shown in the figure. You can also.
【００１６】有機ＥＬ発光装置の薄型軽量化や柔軟化の
点よりは図例の如くその１／４波長板１２を有機ＥＬ素
子の電極基板に用いて透明電極２を支持する方式が好ま
しい。なお前者の積層一体化方式にても円偏光板がその
１／４波長板に基づいて優れたガスバリア特性を示すこ
とより、ガラス基板等に代えてＰＥＴフィルム等のフレ
キシブル基材を電極基板に用いて必要なガスバリア性を
達成しうることより有機ＥＬ発光装置の薄型軽量性や柔
軟性を高めうる利点などがある。From the standpoint of making the organic EL light emitting device thinner and lighter and more flexible, it is preferable to use the 波長 wavelength plate 12 as the electrode substrate of the organic EL element to support the transparent electrode 2 as shown in the figure. In addition, since the circularly polarizing plate shows excellent gas barrier properties based on the quarter wavelength plate also in the former integrated lamination method, a flexible base material such as a PET film is used for the electrode substrate instead of the glass substrate or the like. There is an advantage that the organic EL light emitting device can be made thinner and lighter and more flexible because it can achieve the necessary gas barrier properties.
【００１７】有機ＥＬ素子については、特に限定はなく
陰陽の電極間に有機ＥＬ材料からなる発光層を配置して
なる適宜なものを用いることができ、公知物のいずれも
用いうる。円偏光板による外光の映り込み防止等を活用
する点よりは図例の如く、陽極となる透明電極２と陰極
となる金属からなる背面電極５の組合せとしたものであ
る。なお透明電極は例えばインジウムスズ酸化物（ＩＴ
Ｏ）の蒸着膜等の適宜なものものからなっていてよく、
また金属からなる背面電極も例えばアルミニウムやマグ
ネシウム、銀やカルシウム等の金属の単体や２種以上の
金属の混合物、さらにはそれらの積層体などの適宜なも
のものからなっていてよい。The organic EL device is not particularly limited, and an appropriate device in which a light emitting layer made of an organic EL material is disposed between the positive and negative electrodes can be used, and any known device can be used. Rather than utilizing the prevention of reflection of external light by a circularly polarizing plate, the transparent electrode 2 serving as an anode and the back electrode 5 made of metal serving as a cathode are combined as shown in the figure. The transparent electrode is made of, for example, indium tin oxide (IT
O) may be made of a suitable material such as a vapor-deposited film,
Also, the back electrode made of a metal may be made of an appropriate material such as a simple substance of a metal such as aluminum, magnesium, silver or calcium, a mixture of two or more metals, or a laminate thereof.
【００１８】また有機ＥＬ素子は、図例の如く発光層４
と透明電極２の間にＮ,Ｎ'−ジフェニル−Ｎ,Ｎ'−ビス
−（３−メチルフェニル）−［１,１'−ビフェニル］−
４,４'−ジアミン（ＴＰＤ）等からなる正孔注入輸送層
３を設けたものや、発光層４と背面電極５の間にフェニ
ルビフェニルオキサジアゾールの如き電子輸送層を設け
もの（C.Adachi,S.Tokito,T.Tsutsui,S.Saito, Jpn.J.A
ppl.Phy.,Vol.27,L269(1988)）、青色発光素子等を用い
たＲＧＢの３色発光により白色光を形成したり（特開平
７−９０２６０号公報）してカラー表示を可能としたも
のなどであってもよい。The organic EL device has a light emitting layer 4 as shown in FIG.
, N'-Diphenyl-N, N'-bis- (3-methylphenyl)-[1,1'-biphenyl]-
One having a hole injection / transport layer 3 made of 4,4′-diamine (TPD) or the like, or one having an electron transport layer such as phenylbiphenyloxadiazole between the light emitting layer 4 and the back electrode 5 (C. Adachi, S.Tokito, T.Tsutsui, S.Saito, Jpn.JA
Phy., Vol. 27, L269 (1988)) and white light can be formed by three-color emission of RGB using a blue light emitting element or the like (Japanese Patent Application Laid-Open No. 7-90260) to enable color display. May be used.
【００１９】さらに発光層を一方向に配向処理して偏光
を得るようにしたもの（P.Dyreklevet al,Adv.Mater,8,
146(1995)、J.H.Wendorff et al,Liquid Crystal,Vol.2
1,No.6,903(1996)）、構成材料に蛍光変換材料や色素、
顔料等を配合して発光色を変化させるようにした有機Ｅ
Ｌ素子などであってもよい。加えて有機ＥＬ発光装置
は、２個以上の有機ＥＬ素子を有するものであってもよ
い。なお上記した発光層や正孔注入輸送層、電子輸送層
等は通例１μm以下の層厚で形成される場合が多い。Further, the light emitting layer is oriented in one direction to obtain polarized light (P. Dyreklevet al, Adv. Mater, 8,
146 (1995), JH Wendorff et al, Liquid Crystal, Vol. 2
1, No.6,903 (1996)), fluorescent conversion materials and dyes as constituent materials,
Organic E that changes the luminescent color by blending pigments, etc.
An L element or the like may be used. In addition, the organic EL light emitting device may have two or more organic EL elements. The light emitting layer, the hole injection / transport layer, the electron transport layer, and the like are usually formed with a layer thickness of 1 μm or less.
【００２０】本発明による有機ＥＬ発光装置は、その円
偏光板を介して偏光を出射することより面状発光の偏光
面光源装置として用いることができる。従って斯かる装
置は、液晶表示パネルのバックライトに用いて輝度等の
表示品位に優れる液晶表示装置の形成に好ましく用いる
ことができる。The organic EL light emitting device according to the present invention emits polarized light through the circularly polarizing plate, so that it can be used as a planar light emitting polarized light source device. Therefore, such a device can be preferably used for forming a liquid crystal display device having excellent display quality such as luminance when used for a backlight of a liquid crystal display panel.
【００２１】液晶表示装置の形成に用いる液晶表示パネ
ルないしその液晶セルには適宜なものを用いることがで
き、特に限定はない。また液晶表示装置の形成に際して
は例えば偏光板や位相差板、光拡散板やレンズシート、
反射板などの適宜な光学部品の１種又は２種以上を適宜
な位置に配置することもできる。かかる光学部品は、単
に重ね置いたものであってもよいし、接着層等を介して
接着したものであってもよい。As the liquid crystal display panel or its liquid crystal cell used for forming the liquid crystal display device, an appropriate one can be used, and there is no particular limitation. When forming a liquid crystal display device, for example, a polarizing plate or a retardation plate, a light diffusion plate or a lens sheet,
One or more appropriate optical components such as a reflection plate may be arranged at appropriate positions. Such optical components may be simply stacked, or may be bonded via an adhesive layer or the like.
【００２２】[0022]
【実施例】実施例１ ポリビニルアルコール系偏光フィルムからなる偏光板と
上記したＣ２Ｘ４系ポリマーの延伸フィルムからなる１
／４波長板をアクリル系粘着層を介し接着積層してなる
円偏光板における１／４波長板の露出面に真空蒸着法に
て厚さ１００nmのＩＴＯ透明膜からなる透明電極を形成
しパターニングを施して陽極とした後、超音波方式つい
で紫外線オゾン方式で洗浄し乾燥させた。前記１／４波
長板の水蒸気透過率は、０．１ｇ・１００μm／ｍ２・
日以下であった。Example 1 A polarizing plate composed of a polyvinyl alcohol-based polarizing film and a stretched film composed of the above-mentioned C 2 X 4 polymer stretched film were used.
A transparent electrode made of a 100 nm thick ITO transparent film is formed on the exposed surface of the quarter wave plate of the circularly polarizing plate obtained by bonding and laminating a quarter wave plate via an acrylic adhesive layer, and patterning is performed. After application to form an anode, it was washed and dried by an ultrasonic method and then an ultraviolet ozone method. The water vapor transmission rate of the 波長 wavelength plate is 0.1 g · 100 μm / m 2 ·
Days or less.
【００２３】次に抵抗加熱型真空蒸着装置内のモリブデ
ン製加工ボートに配置したＴＰＤと別のモリブデン製加
工ボートに配置したトリス（８−キノリノール）アルミ
ニウム（Ａｌｑ）を介し真空チャンバー内を１×１０
−４Ｐａの減圧状態としてＴＰＤを２２０℃に加熱し、
前記陽極の上に厚さ６０nmのＴＰＤ膜からなる正孔注入
輸送層を形成し、その上にＡｌｑを２７５℃に加熱して
厚さ６０nmのＡｌｑ膜からなる発光層を設けた。Next, the inside of the vacuum chamber was 1 × 10 4 through TPD disposed on a molybdenum processing boat and tris (8-quinolinol) aluminum (Alq) disposed on another molybdenum processing boat in a resistance heating type vacuum evaporation apparatus.
The TPD is heated to 220 ° C. under a reduced pressure of −4 Pa,
A hole injection / transport layer made of a 60 nm thick TPD film was formed on the anode, and Alq was heated to 275 ° C. to provide a light emitting layer made of a 60 nm thick Alq film.
【００２４】ついでモリブデン製加工ボートに配置した
マグネシウムと別のモリブデン製加工ボートに配置した
銀を介し真空チャンバー内を２×１０−４Ｐａの減圧状
態として２元同時蒸着方式により、Ｍｇ・Ａｇ合金（Ｍ
ｇ／Ａｇ：１０／１）からなる厚さ１４０nmの陰極膜を
前記発光層の上に形成して、緑色（主波長５１３nm）に
発光する有機ＥＬ素子を得、その外周を劣化防止層で封
止して有機ＥＬ発光装置を得た。Next, the vacuum chamber was evacuated to 2 × 10 −4 Pa via magnesium disposed in a molybdenum processing boat and silver disposed in another molybdenum processing boat, and a Mg—Ag alloy was formed by a binary simultaneous vapor deposition method. (M
g / Ag: 10/1), and a 140 nm-thick cathode film is formed on the light-emitting layer to obtain an organic EL element which emits green light (main wavelength: 513 nm). The operation was stopped to obtain an organic EL light emitting device.
【００２５】前記の有機ＥＬ発光装置は、１／４波長板
を陽極の電極基板とすることで薄型軽量性と柔軟性に優
れていた。また円偏光板側より視認した場合に外光の映
り込みがなく、陰極膜によるギラツキも発生しなかっ
た。さらに装置の発光状態で円偏光板より出射した光
は、偏光度に優れる直線偏光であり、輝度に優れてその
バラツキも認められなかった。The above-mentioned organic EL light-emitting device was excellent in thinness, lightness and flexibility by using a quarter-wave plate as an anode electrode substrate. When viewed from the side of the circularly polarizing plate, there was no reflection of external light, and no glare caused by the cathode film. Further, the light emitted from the circularly polarizing plate in the light emitting state of the device was linearly polarized light having an excellent degree of polarization, was excellent in luminance, and did not show any variation.
【００２６】実施例２ １／４波長板として、ポリカーボネートの延伸フィルム
からなる１／４波長板の両面に二酸化珪素からなる厚さ
１００nmの無機薄膜層を真空蒸着方式で形成したものを
用いて円偏光板を得、それを用いたほかは実施例１に準
じて有機ＥＬ発光装置を得た。前記１／４波長板の水蒸
気透過率は、０．１ｇ・１００μm／ｍ ２・日以下であ
った。この有機ＥＬ発光装置も１／４波長板を電極基板
したことで薄型軽量性と柔軟性に優れており、円偏光板
側より視認した場合に外光の映り込みがなく陰極膜によ
るギラツキも発生しなかった。また装置の発光状態で円
偏光板より出射した光は、偏光度に優れる直線偏光であ
り、輝度に優れてそのバラツキも認められなかった。Example 2 A stretched polycarbonate film as a quarter-wave plate
Thickness consisting of silicon dioxide on both sides of a quarter-wave plate made of
100nm inorganic thin film layer formed by vacuum evaporation
Example 1 was repeated except that a circularly polarizing plate was used.
Thus, an organic EL device was obtained. Steaming of the 1/4 wavelength plate
The air permeability is 0.1 g · 100 μm / m 2・ Below days
Was. This organic EL light emitting device also uses a 1/4 wavelength plate as an electrode substrate.
It is excellent in thinness, lightness and flexibility by using
There is no reflection of external light when viewed from the side
There was no glare. You can also see the circle
The light emitted from the polarizing plate is linearly polarized light having an excellent degree of polarization.
The brightness was excellent and no variation was observed.
【図１】実施例の断面図FIG. 1 is a sectional view of an embodiment.
１：円偏光板（１１：偏光子 １２：１／４波長板） ２：透明電極 ４：発光層 ５：背面電極 1: circular polarizer (11: polarizer 12: quarter-wave plate) 2: transparent electrode 4: light-emitting layer 5: back electrode
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｈ０５Ｂ 33/14 Ｈ０５Ｂ 33/14 Ａ 33/26 33/26 Ｚ Ｆターム(参考） 2H049 BA02 BA03 BA07 BA26 BA27 BB03 BB42 BB43 BB52 BB62 BC01 BC03 BC04 BC09 BC22 2H091 FA08X FA08Z FA11X FA11Z FA41Z LA11 LA30 3K007 AB00 AB02 AB04 BB00 CA01 CA06 CB01 DA00 DB03 EB00 FA01 5G435 AA03 BB05 BB12 FF05 GG00 GG25 KK05 LL00 Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat II (reference) H05B 33/14 H05B 33/14 A 33/26 33/26 Z F term (reference) 2H049 BA02 BA03 BA07 BA26 BA27 BB03 BB42 BB43 BB52 BB62 BC01 BC03 BC04 BC09 BC22 2H091 FA08X FA08Z FA11X FA11Z FA41Z LA11 LA30 3K007 AB00 AB02 AB04 BB00 CA01 CA06 CB01 DA00 DB03 EB00 FA01 5G435 AA03 BB05 BB12 FF05 GG00 GG25 KK05 LL00
Claims (6)
００μm／ｍ２・日以下の１／４波長板との積層体から
なることを特徴とする円偏光板。1. A polarizer having a water vapor transmission rate of 0.1 g · 1
A circularly polarizing plate comprising a laminate with a quarter-wave plate of not more than 00 μm / m 2 · day.
Ｘ４（ただしＸは、水素、塩素又はフッ素である）をモ
ノマーとし、水素の含有量が０個又は１個のポリマーに
よるフィルムからなる円偏光板。2. The method according to claim 1, wherein the quarter-wave plate is C 2.
A circularly polarizing plate comprising a film of a polymer having X 4 (where X is hydrogen, chlorine or fluorine) as a monomer, and having zero or one hydrogen content.
が片面又は両面に無機薄膜層を有するポリマーフィルム
からなる円偏光板。3. A circularly polarizing plate according to claim 1, wherein the quarter-wave plate is a polymer film having an inorganic thin film layer on one or both sides.
Ｌ素子の発光側に有することを特徴とする有機ＥＬ発光
装置。4. The circular polarizing plate according to claim 1, wherein
An organic EL light-emitting device provided on the light-emitting side of the L element.
長板が有機ＥＬ素子の電極基板を形成する、又は有機Ｅ
Ｌ素子の電極基板に接着された有機ＥＬ発光装置。5. The organic EL device according to claim 4, wherein a quarter-wave plate of a circularly polarizing plate forms an electrode substrate of the organic EL element.
An organic EL light emitting device bonded to an electrode substrate of an L element.
置における円偏光板を介した偏光をバックライトとする
ことを特徴とする液晶表示装置。6. A liquid crystal display device according to claim 4, wherein polarized light passing through the circularly polarizing plate is used as a backlight in the organic EL light emitting device according to claim 4.
Priority Applications (1)
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|---|---|---|---|
| JP2000352670A JP2002156524A (en) | 2000-11-20 | 2000-11-20 | Circularly polarizing plate, organic el light emitting device and liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000352670A JP2002156524A (en) | 2000-11-20 | 2000-11-20 | Circularly polarizing plate, organic el light emitting device and liquid crystal display device |
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|---|---|
| JP2002156524A true JP2002156524A (en) | 2002-05-31 |
Family
ID=18825531
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|---|---|---|---|
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005195824A (en) * | 2004-01-07 | 2005-07-21 | Asahi Kasei Chemicals Corp | Wire grid type polarizer |
| WO2011118661A1 (en) * | 2010-03-25 | 2011-09-29 | 日本ゼオン株式会社 | Gas barrier laminate and circularly polarizing plate |
| JP2012027107A (en) * | 2010-07-21 | 2012-02-09 | Hitachi Displays Ltd | Display apparatus |
| GB2491916A (en) * | 2011-06-14 | 2012-12-19 | Lg Display Co Ltd | OLED device |
| KR20160093054A (en) | 2013-12-03 | 2016-08-05 | 닛토덴코 가부시키가이샤 | Polarizing film, polarizing film with adhesive layer, and image display device |
| JP2017134371A (en) * | 2016-01-29 | 2017-08-03 | 日東電工株式会社 | Optical laminate |
| JPWO2016125802A1 (en) * | 2015-02-04 | 2017-10-05 | 富士フイルム株式会社 | Laminated body and image display device |
| JPWO2016125801A1 (en) * | 2015-02-04 | 2017-11-24 | 富士フイルム株式会社 | Image display device |
| US10079366B2 (en) | 2011-06-14 | 2018-09-18 | Lg Display Co., Ltd. | Plastic organic electroluminescent display device and method of fabricating the same |
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| JP4527986B2 (en) * | 2004-01-07 | 2010-08-18 | 旭化成イーマテリアルズ株式会社 | Wire grid polarizer |
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| US10079366B2 (en) | 2011-06-14 | 2018-09-18 | Lg Display Co., Ltd. | Plastic organic electroluminescent display device and method of fabricating the same |
| KR20160093054A (en) | 2013-12-03 | 2016-08-05 | 닛토덴코 가부시키가이샤 | Polarizing film, polarizing film with adhesive layer, and image display device |
| JPWO2016125802A1 (en) * | 2015-02-04 | 2017-10-05 | 富士フイルム株式会社 | Laminated body and image display device |
| JPWO2016125801A1 (en) * | 2015-02-04 | 2017-11-24 | 富士フイルム株式会社 | Image display device |
| US10481312B2 (en) | 2015-02-04 | 2019-11-19 | Fujifilm Corporation | Laminate and image display device |
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