JPH1050482A - Organic el element - Google Patents
Organic el elementInfo
- Publication number
- JPH1050482A JPH1050482A JP8202425A JP20242596A JPH1050482A JP H1050482 A JPH1050482 A JP H1050482A JP 8202425 A JP8202425 A JP 8202425A JP 20242596 A JP20242596 A JP 20242596A JP H1050482 A JPH1050482 A JP H1050482A
- Authority
- JP
- Japan
- Prior art keywords
- organic
- layer
- cathode
- organic material
- material layer
- 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.)
- Granted
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 33
- 239000000126 substance Substances 0.000 claims abstract description 4
- 239000011368 organic material Substances 0.000 claims description 27
- 239000010410 layer Substances 0.000 abstract description 60
- 239000000843 powder Substances 0.000 abstract description 18
- 239000012044 organic layer Substances 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 8
- 238000007650 screen-printing Methods 0.000 abstract description 8
- 239000000758 substrate Substances 0.000 abstract description 4
- 239000010409 thin film Substances 0.000 abstract description 4
- 239000011521 glass Substances 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 9
- 230000005525 hole transport Effects 0.000 description 7
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 6
- 238000007740 vapor deposition Methods 0.000 description 6
- 239000004417 polycarbonate Substances 0.000 description 5
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910019015 Mg-Ag Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- 238000007738 vacuum evaporation Methods 0.000 description 2
- ZOKIJILZFXPFTO-UHFFFAOYSA-N 4-methyl-n-[4-[1-[4-(4-methyl-n-(4-methylphenyl)anilino)phenyl]cyclohexyl]phenyl]-n-(4-methylphenyl)aniline Chemical compound C1=CC(C)=CC=C1N(C=1C=CC(=CC=1)C1(CCCCC1)C=1C=CC(=CC=1)N(C=1C=CC(C)=CC=1)C=1C=CC(C)=CC=1)C1=CC=C(C)C=C1 ZOKIJILZFXPFTO-UHFFFAOYSA-N 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920003217 poly(methylsilsesquioxane) Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/82—Cathodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/351—Thickness
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/14—Carrier transporting layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/17—Carrier injection layers
- H10K50/171—Electron injection layers
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、有機ＥＬ素子に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic EL device.
【０００２】[0002]
【従来の技術】有機ＥＬ素子は、対向電極の間に有機発
光体を挾んだ構成からなっており、陽極からは正孔が、
陰極からは電子が注入され、この注入された正孔と電子
が発光体層で再結合することにより発光するものであ
る。2. Description of the Related Art An organic EL device has a structure in which an organic luminous body is sandwiched between opposed electrodes.
Electrons are injected from the cathode, and the injected holes and electrons recombine in the light emitting layer to emit light.
【０００３】この様な有機ＥＬ素子としては、特開昭６
３−２９５６９５号公報に開示されているように、ＩＴ
Ｏ（インジウム・ティン・オキサイド）等の透明電極が
蒸着されたガラス上に、正孔注入層として銅フタロシア
ニンが蒸着され、その上に、正孔輸送層として１、１−
ビス（４−ジ−ｐ−トリルアミノフェニル）−シクロヘ
キサンが蒸着され、その上に、電子注入輸送層としてア
ルミニウムトリスオキシンが蒸着され、その上に、陰極
としては、有機物層への電子注入のために仕事関数の低
い金属（例えばＭｇ）が必要であるので、Ｍｇ−Ａｇ合
金が蒸着されているものがあった。[0003] Such an organic EL element is disclosed in
As disclosed in JP-A-3-295695, IT
Copper phthalocyanine is deposited as a hole injection layer on a glass on which a transparent electrode such as O (indium tin oxide) is deposited, and 1,1-1- as a hole transport layer is further deposited thereon.
Bis (4-di-p-tolylaminophenyl) -cyclohexane is deposited thereon, and aluminum trisoxine is deposited thereon as an electron injecting and transporting layer, and a cathode is provided thereon for injecting electrons into an organic material layer. Requires a metal having a low work function (e.g., Mg), so that a Mg-Ag alloy has been deposited.
【０００４】[0004]
【発明が解決しようとする課題】しかし、各有機物層
は、その膜厚によって発光特性が大きく変化するため
に、各層を約１００ｎｍ以下の薄い膜厚で、かつ均一に
順次真空蒸着により形成しなければならないので、生産
性が悪く、製造コストが高くなるという問題点があっ
た。また、陰極としてＭｇ−Ａｇ合金を有機物層の上に
形成する場合には、金属板を貼着することが精度上また
密着性の点から困難であるので、やはり真空蒸着により
形成しなければならず、上記の場合と同様に生産性が悪
く、製造コストが高いという問題点があった。However, since the light emission characteristics of each organic material layer vary greatly depending on its thickness, it is necessary to form each layer with a thin film thickness of about 100 nm or less and uniformly and sequentially by vacuum evaporation. Therefore, there is a problem that productivity is low and manufacturing cost is high. Further, when a Mg-Ag alloy is formed on an organic material layer as a cathode, it is difficult to attach a metal plate from the viewpoint of precision and adhesion, so that it must be formed by vacuum evaporation. However, as in the above case, there is a problem that productivity is low and manufacturing cost is high.
【０００５】[0005]
【課題を解決するための手段】上記の問題点を解決する
ために、本発明は、陰極の有機発光層側の面に形成され
る有機物層中に、仕事関数の低い金属を含有させ、これ
により陰極の形成及びこの陰極に接する有機物層の形成
を、蒸着によらないで湿式法によって達成している。In order to solve the above-mentioned problems, the present invention provides an organic material layer formed on the surface of the cathode on the side of the organic light-emitting layer, which contains a metal having a low work function. Thus, formation of a cathode and formation of an organic layer in contact with the cathode are achieved by a wet method without using vapor deposition.
【０００６】[0006]
【発明の実施の形態】本発明は、陽極と陰極との間に有
機発光層を有し、有機発光層に直流電流を印加すること
により発光する有機ＥＬ素子において、陰極の有機発光
層側の面に、仕事関数の低い金属を含有する有機物層が
設けられている。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an organic EL device having an organic light emitting layer between an anode and a cathode and emitting light by applying a direct current to the organic light emitting layer. An organic layer containing a metal having a low work function is provided on the surface.
【０００７】また、上記の仕事関数の低い金属を含有す
る有機物層と上記の有機発光層との間には電子輸送層が
設けられており、有機物層と電子輸送層とには、電子輸
送性を有する同じ有機物が含まれている。An electron transport layer is provided between the organic material layer containing a metal having a low work function and the organic light emitting layer, and the organic material layer and the electron transport layer have an electron transport property. The same organic substance having the following is included.
【０００８】上記のように構成することによって、陰極
及びこの陰極に接する有機物層を湿式法により形成する
ことが可能になる。[0008] With the above configuration, the cathode and the organic layer in contact with the cathode can be formed by a wet method.
【０００９】[0009]
【実施例】実施例について図面を参照して説明すると、
図１において、ガラス又は合成樹脂の基板１上には、Ａ
ｕ、Ｐｔ、Ｐｄ、ＩＴＯ等の金属をスパッタリングもし
くは蒸着によって陽極１ａが形成してある。陽極１ａ
は、発光を透過させるために、４００ｎｍ以上の波長領
域で透明であることが望ましい。陽極１ａ上に、テトラ
ファニルジアミン（以下「ＴＰＤ」と略す。）が蒸着さ
れて正孔輸送層２が形成してある。さらに正孔輸送層２
上に、トリス（８−ヒドロキシキノリナート）アルミニ
ウム（以下「Ａｌｑ３」と略す。）が蒸着されて有機発
光層３が形成してある。正孔輸送層２と有機発光層３の
膜厚は、１００ｎｍ以下であることが望ましい。Embodiments will be described with reference to the drawings.
In FIG. 1, on a glass or synthetic resin substrate 1, A
The anode 1a is formed by sputtering or vapor deposition of a metal such as u, Pt, Pd, and ITO. Anode 1a
Is preferably transparent in a wavelength region of 400 nm or more in order to transmit light emission. On the anode 1a, a hole transport layer 2 is formed by vapor deposition of tetraphanyl diamine (hereinafter abbreviated as "TPD"). Further, the hole transport layer 2
On top, tris (8-hydroxyquinolinato) aluminum (hereinafter abbreviated as “Alq3”) is deposited to form an organic light emitting layer 3. It is desirable that the hole transport layer 2 and the organic light emitting layer 3 have a thickness of 100 nm or less.
【００１０】この有機発光層３の上には、仕事関数の低
い金属粉末が混入してある有機物層４がスクリーン印刷
することによって形成してある。この有機物層４は、Ｎ
−メチル−２−ピロリジノン（以下「ＮＭＰ」と略
す。）と、ポリカーボネート（以下「ＰＣ」と略す。）
と、Ａｌｑ３と、仕事関数の低い金属粉末とからなるイ
ンクをスクリーン印刷することによって形成されてい
る。金属粉末の一例として以下の組み合わせがある。 １．Ｍｇ＋Ｉｎ （原子数比１０：１） ２．Ｍｇ＋Ａｇ （原子数比１０：１） ３．Ｌｉ＋Ａｌ （重量％ 0.1 ：99.9） また、インクの配合比は、ＮＭＰ：ＰＣ：Ａｌｑ３：金
属粉末＝0.5 ：0.5 ：２：２ 程度とし、膜厚は１０μ
ｍ以下であることが望ましい。On the organic light emitting layer 3, an organic layer 4 mixed with a metal powder having a low work function is formed by screen printing. This organic layer 4 is made of N
-Methyl-2-pyrrolidinone (hereinafter abbreviated as "NMP") and polycarbonate (hereinafter abbreviated as "PC").
, Alq3, and a metal powder having a low work function by screen printing. Examples of the metal powder include the following combinations. 1. 1. Mg + In (atomic ratio: 10: 1) 2. Mg + Ag (atomic ratio: 10: 1) Li + Al (% by weight: 0.1: 99.9) The mixing ratio of the ink is about NMP: PC: Alq3: metal powder = 0.5: 0.5: 2: 2, and the film thickness is 10 μm.
m or less.
【００１１】この有機物層４の上には、陰極５が形成さ
れている。陰極５として、ＮｉやＡｌやＡｇなどの金属
の薄膜が用いられ、金属の蒸着やスクリーン印刷などに
よっても形成が可能であるが、Ａｇの薄膜を有機物層４
の上に設置して固定するだけでも十分である。本発明で
は有機物層４内に金属（Ｍｇなど）が含まれているの
で、その上に形成される陰極５の金属（Ａｇなど）との
密着性がよいため、蒸着に限らず上記のような簡単な方
法で接合できる。A cathode 5 is formed on the organic layer 4. As the cathode 5, a thin film of a metal such as Ni, Al, or Ag is used. The thin film of Ag can be formed by vapor deposition or screen printing of the metal.
It is enough to install and fix it on top. In the present invention, since the metal (Mg or the like) is contained in the organic material layer 4, the adhesiveness with the metal (Ag or the like) of the cathode 5 formed thereon is good, so that it is not limited to the vapor deposition but is as described above. Can be joined in a simple way.
【００１２】有機物層４では、図２に一部を拡大して示
すように、仕事関数の低い金属粉末４ａの回りを有機発
光体Ａｌｑ３などの有機物４ｂが取り囲んでいる構造に
なっており、金属粉末４ａの間に隙間があるために電子
の注入は十分に行われる。また膜厚が厚くても金属粉末
間の隙間は微小であるので、膜厚が薄い有機物層を形成
する場合と実質的に同じになり、発光輝度の低下を招く
ことはない。したがって有機物層４の膜厚の許容範囲が
広くできるため、上記のようにスクリーン印刷やスピン
コートなどの湿式法による有機物層４の形成が可能にな
る。The organic material layer 4 has a structure in which a metal powder 4a having a low work function is surrounded by an organic material 4b such as an organic luminous body Alq3 as shown in a partially enlarged view in FIG. Since there is a gap between the powders 4a, the injection of electrons is sufficiently performed. Further, even if the film thickness is large, the gap between the metal powders is very small, so that it is substantially the same as the case of forming the organic material layer having a small film thickness, and does not cause a decrease in light emission luminance. Therefore, since the allowable range of the film thickness of the organic material layer 4 can be widened, the organic material layer 4 can be formed by a wet method such as screen printing or spin coating as described above.
【００１３】他の実施例として、図３に示すものは、図
１で説明した有機物層４に代えて、電子輸送層６と、仕
事関数の低い金属粉末を含有する有機物層７とを設けた
ものである。即ち、陽極１ａが形成してある基板１と、
正孔輸送層２と、有機発光層３については図１と同様で
ある。有機発光層３の上に、フェニルピフェニルオキサ
ジアゾール（以下「Ｂｕ−ＰＢＤ」と略す。）が蒸着さ
れて電子輸送層６が形成してある。正孔輸送層２と有機
発光層３と電子輸送層６の膜厚は、１００ｎｍ以下であ
ることが望ましい。As another embodiment, the one shown in FIG. 3 is provided with an electron transport layer 6 and an organic layer 7 containing a metal powder having a low work function, instead of the organic layer 4 described in FIG. Things. That is, the substrate 1 on which the anode 1a is formed,
The hole transport layer 2 and the organic light emitting layer 3 are the same as those in FIG. On the organic light emitting layer 3, phenylpiphenyloxadiazole (hereinafter abbreviated as “Bu-PBD”) is deposited to form an electron transport layer 6. The thickness of the hole transport layer 2, the organic light emitting layer 3, and the electron transport layer 6 is desirably 100 nm or less.
【００１４】この電子輸送層６の上には、仕事関数の低
い金属粉末を含有する有機物層７がスクリーン印刷する
ことによって形成してある。この有機物層７は、図１の
有機物層４を構成するＮＭＰと、ＰＣと、電子輸送層６
で用いたＢｕ−ＰＢＤと、仕事関数の低い金属粉末とか
らなるインクをスクリーン印刷することによって形成さ
れている。金属粉末については図１で説明したものと同
じである。インクの配合比は、ＮＭＰ：ＰＣ：Ｂｕ−Ｐ
ＢＤ：金属粉末＝0.5 ：0.5 ：２：２ 程度とし、膜厚
は１０μｍ以下であることが望ましい。An organic layer 7 containing a metal powder having a low work function is formed on the electron transport layer 6 by screen printing. The organic material layer 7 includes NMP, PC, and the electron transport layer 6 that constitute the organic material layer 4 of FIG.
Is formed by screen-printing an ink comprising the Bu-PBD used in the above and a metal powder having a low work function. The metal powder is the same as that described in FIG. The mixing ratio of the ink is NMP: PC: Bu-P
BD: metal powder = 0.5: 0.5: 2: 2 It is desirable that the film thickness be 10 μm or less.
【００１５】この有機物層７の上に、図１で説明したと
同様な陰極５が形成されている。A cathode 5 similar to that described with reference to FIG. 1 is formed on the organic material layer 7.
【００１６】この場合にも、有機物層７は、図２で説明
したと同様に、仕事関数の低い金属粉末の回りを電子輸
送性の有機物であるＢｕ−ＰＢＤが取り囲んでいる構造
になっているので、金属粉末の間に隙間があるために電
子の注入は十分に行われる。また膜厚が厚くても金属粉
末間の隙間は微小であるので、膜厚が薄い場合と実質的
に同じになり、発光輝度の低下を招くことはない。した
がって膜厚の許容範囲が広くできるため、上記のように
スクリーン印刷やスピンコートなどの湿式法による有機
物層７の形成が可能になる。Also in this case, the organic material layer 7 has a structure in which a metal powder having a low work function is surrounded by a Bu-PBD, which is an organic material having electron transporting properties, as described with reference to FIG. Therefore, electrons are sufficiently injected because there is a gap between the metal powders. Further, even if the film thickness is large, the gap between the metal powders is minute, so that it is substantially the same as the case where the film thickness is small, and the emission luminance does not decrease. Therefore, since the allowable range of the film thickness can be widened, the organic material layer 7 can be formed by a wet method such as screen printing or spin coating as described above.
【００１７】[0017]
【発明の効果】仕事関数の低い金属は、陰極中にではな
く陰極に接する有機物層中に含有させてあり、有機物層
の膜厚が厚くても金属間の隙間は微小であるので、膜厚
が薄い場合と実質的に同じになり、発光輝度の低下を招
くことはない。したがって有機物層の膜厚の許容範囲が
広くできるため、蒸着によらないで湿式法によって形成
が可能になり、製造が容易でコストを低減できる。ま
た、有機物層内に金属が含有されているので、金属板を
貼着するのみによっても精度上また密着性の点から何等
問題なく陰極を形成できるので、真空蒸着以外の方法で
も製造が可能となり、コストを低減できる。The metal having a low work function is contained not in the cathode but in the organic layer in contact with the cathode. Even if the thickness of the organic layer is large, the gap between the metals is very small. Is substantially the same as the case where the light emission is thin, and does not cause a decrease in light emission luminance. Therefore, since the allowable range of the film thickness of the organic material layer can be widened, the organic material layer can be formed by a wet method without using vapor deposition, so that the production is easy and the cost can be reduced. In addition, since the metal is contained in the organic material layer, the cathode can be formed without any problem in terms of accuracy and adhesion only by sticking a metal plate. Cost can be reduced.
【図１】本発明の一実施例の有機ＥＬ素子の断面図であ
る。FIG. 1 is a cross-sectional view of an organic EL device according to one embodiment of the present invention.
【図２】図１中の有機物層の一部拡大断面図である。FIG. 2 is a partially enlarged cross-sectional view of an organic material layer in FIG.
【図３】本発明の他の実施例の有機ＥＬ素子の断面図で
ある。FIG. 3 is a sectional view of an organic EL device according to another embodiment of the present invention.
１ 基板 １ａ 陽極 ２ 正孔輸送層 ３ 有機発光層 ４ 有機物層 ４ａ 仕事関数の低い金属粉末 ５ 陰極 ６ 電子輸送層 ７ 有機物層 DESCRIPTION OF SYMBOLS 1 Substrate 1a Anode 2 Hole transport layer 3 Organic light emitting layer 4 Organic material layer 4a Metal powder with low work function 5 Cathode 6 Electron transport layer 7 Organic material layer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高橋 英雄 東京都墨田区太平四丁目３番９号 セイコ ープレシジョン株式会社内 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Hideo Takahashi Seiko Precision Co., Ltd. 3-9-1 Taihei, Sumida-ku, Tokyo
Claims (2)
上記有機発光層に直流電流を印加することにより発光す
る有機ＥＬ素子において、上記陰極の上記有機発光層側
の面に、仕事関数の低い金属を含有する有機物層が設け
られていることを特徴とする有機ＥＬ素子。An organic light-emitting layer is provided between an anode and a cathode,
In the organic EL device which emits light by applying a direct current to the organic light emitting layer, an organic material layer containing a metal having a low work function is provided on a surface of the cathode on the organic light emitting layer side. Organic EL device.
物層と上記有機発光層との間には電子輸送層が設けられ
ており、上記有機物層と上記電子輸送層とには、電子輸
送性を有する同じ有機物が含まれていることを特徴とす
る請求項１記載の有機ＥＬ素子。2. An electron transporting layer is provided between the organic material layer containing a metal having a low work function and the organic light emitting layer, and the organic material layer and the electron transporting layer have an electron transporting property. The organic EL device according to claim 1, wherein the same organic substance having the following formula is contained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20242596A JP3744609B2 (en) | 1996-07-31 | 1996-07-31 | Organic EL device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20242596A JP3744609B2 (en) | 1996-07-31 | 1996-07-31 | Organic EL device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1050482A true JPH1050482A (en) | 1998-02-20 |
| JP3744609B2 JP3744609B2 (en) | 2006-02-15 |
Family
ID=16457305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20242596A Expired - Fee Related JP3744609B2 (en) | 1996-07-31 | 1996-07-31 | Organic EL device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3744609B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003054981A1 (en) * | 2001-12-20 | 2003-07-03 | Add-Vision, Inc. | Screen printable electrode for organic light emitting device |
-
1996
- 1996-07-31 JP JP20242596A patent/JP3744609B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003054981A1 (en) * | 2001-12-20 | 2003-07-03 | Add-Vision, Inc. | Screen printable electrode for organic light emitting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3744609B2 (en) | 2006-02-15 |
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