JPH06176867A - Electroluminescent element - Google Patents
Electroluminescent elementInfo
- Publication number
- JPH06176867A JPH06176867A JP4330424A JP33042492A JPH06176867A JP H06176867 A JPH06176867 A JP H06176867A JP 4330424 A JP4330424 A JP 4330424A JP 33042492 A JP33042492 A JP 33042492A JP H06176867 A JPH06176867 A JP H06176867A
- Authority
- JP
- Japan
- Prior art keywords
- thin film
- organic thin
- fine powder
- electroluminescent device
- organic
- 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
- 239000010409 thin film Substances 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims abstract description 7
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 6
- 230000001681 protective effect Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 229910021536 Zeolite Inorganic materials 0.000 claims description 6
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical group O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 6
- 239000010457 zeolite Substances 0.000 claims description 6
- 239000012024 dehydrating agents Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000006866 deterioration Effects 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 239000010410 layer Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000000891 luminescent agent Substances 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000002274 desiccant Substances 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- AZWHFTKIBIQKCA-UHFFFAOYSA-N [Sn+2]=O.[O-2].[In+3] Chemical compound [Sn+2]=O.[O-2].[In+3] AZWHFTKIBIQKCA-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012992 electron transfer agent Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 150000004866 oxadiazoles Chemical class 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- JZRYQZJSTWVBBD-UHFFFAOYSA-N pentaporphyrin i Chemical class N1C(C=C2NC(=CC3=NC(=C4)C=C3)C=C2)=CC=C1C=C1C=CC4=N1 JZRYQZJSTWVBBD-UHFFFAOYSA-N 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 description 1
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電極間に電界発光性有
機層を設けた素子で、平面光源や表示装置に利用される
有機薄膜電界発光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 thin film electroluminescent element which is an element having an electroluminescent organic layer provided between electrodes and which is used for a flat light source or a display device.
【０００２】[0002]
【従来の技術】従来、有機物質を原料とした電界発光素
子は、安価な大面積のフルカラー表示装置を実現するも
のとして注目を集めている。例えばアントラセンやペリ
レン等の縮合多環芳香族系を原料として、ＬＢ膜法や真
空蒸着法で薄膜化した有機薄膜素子が開発され、その発
光特性が研究されている。しかし、従来の有機薄膜ＥＬ
素子は駆動電圧が高く、かつその発光輝度の効率が無機
薄膜ＥＬ素子のそれに比べて低かった。また発光時の劣
化も著しく、実用レベルのものではなかった。ところ
が、最近、有機薄膜を２層構造にした新しいタイプの有
機薄膜ＥＬが報告され、強い関心を集めており、（アプ
ライド、フィジックス、レターズ、５１巻、９１３ペー
ジ、１９８７）この報告によれば、駆動電圧６〜７Ｖと
低電圧で数１００ｃｄ／ｍ2 の輝度を得ている。2. Description of the Related Art Conventionally, an electroluminescent device made of an organic material has been attracting attention as an inexpensive large-area full-color display device. For example, an organic thin film element which is made thin by a LB film method or a vacuum vapor deposition method using a condensed polycyclic aromatic system such as anthracene or perylene as a raw material has been developed, and its emission characteristics have been studied. However, conventional organic thin film EL
The device had a high driving voltage, and the efficiency of its emission luminance was lower than that of the inorganic thin film EL device. Further, the deterioration during light emission was remarkable, and it was not of a practical level. However, recently, a new type of organic thin film EL in which the organic thin film has a two-layer structure has been reported and has been attracting a great deal of attention (Applied, Physics, Letters, Vol. 51, pp. 913, 1987). A driving voltage of 6 to 7 V and a low voltage of several hundred cd / m 2 are obtained.
【０００３】[0003]
【発明が解決しようとする課題】この素子はキャリア注
入型であるため、陰極材料には電子がより容易に注入で
きるように、仕事関数の小さい金属が効果的であり、仕
事関数の小さい金属を用いる事で低電圧で高輝度の発光
が得られている。しかし、仕事関数の小さい金属として
は、リチウムに代表されるアルカリ金属やマグネシウム
に代表されるアルカリ土類金属、あるいはアルミニウ
ム、インジウム等などで、少量の貴金属を共蒸着して耐
久性の向上を計っているが上記金属が活性なため、大気
中の水分と反応して陰極としての性能を失い、劣化して
いく重大な欠点を有していた。本発明は、上記従来技術
の実状に鑑み成されたものであり、その目的は、耐久性
に優れた電界発光素子を提供することにある。Since this element is a carrier injection type, a metal having a small work function is effective and a metal having a small work function is effective for the cathode material so that electrons can be injected more easily. By using it, it is possible to obtain high-luminance light emission at a low voltage. However, as a metal having a low work function, an alkali metal typified by lithium, an alkaline earth metal typified by magnesium, aluminum, indium, or the like can be co-evaporated with a small amount of a noble metal to improve durability. However, since the above metal is active, it has a serious drawback that it reacts with moisture in the atmosphere to lose its performance as a cathode and deteriorates. The present invention has been made in view of the above-mentioned conventional state of the art, and an object thereof is to provide an electroluminescent element having excellent durability.
【０００４】[0004]
【課題を解決するための手段】本発明者らは、有機薄膜
電界発光素子の封止と耐久性について鋭意検討した結
果、前記有機薄膜電界素子の周囲が保護ケースで外界と
遮断され、前記保護ケース内に脱水剤を充填すること
が、該素子に於いて、極めて耐久性に有効であることを
見い出し、本発明に至った。即ち、本発明は、少なくと
も一方が透明である陽極と陰極の間に、少なくとも一種
類の有機化合物を含む電界発光物質層を設けた有機薄膜
電界発光素子に於て、該素子の周囲に保護ケースを設け
て該保護ケース内に微粉末固体脱水剤を充填してなるこ
とを特徴とする電界発光素子である。Means for Solving the Problems As a result of diligent studies on sealing and durability of an organic thin film electroluminescent device, the present inventors have found that the periphery of the organic thin film electroluminescent device is shielded from the outside by a protective case, and It has been found that filling the case with a dehydrating agent is extremely effective for durability in the device, and has reached the present invention. That is, the present invention provides an organic thin film electroluminescent device having an electroluminescent material layer containing at least one organic compound between an anode and a cathode, at least one of which is transparent, and a protective case around the device. And a fine powder solid dehydrating agent is filled in the protective case.
【０００５】本発明に用いる有機薄膜電界発光素子は、
陽極と有機化合物からなる有機電界発光物質層または陽
極と無機半導体及び有機化合物からなる電界発光物質並
びに陰極を基本構成としている。そして、陽極は、例え
ば金、白金、パラジウム等の金属薄膜または錫、錫添加
インジウム等の酸化薄膜が用いることができ、透明な電
極がより好ましい。また、陰極は、真空蒸着やスパッタ
膜が形成できる固体金属であれば、単独金属薄膜でも異
種金属の共蒸着薄膜でもかまわないが、仕事関数が小さ
ければ更に好ましい。The organic thin film electroluminescent device used in the present invention is
An organic electroluminescent material layer composed of an anode and an organic compound, or an electroluminescent material composed of an anode, an inorganic semiconductor and an organic compound, and a cathode are basically constituted. As the anode, for example, a metal thin film of gold, platinum, palladium or the like or an oxide thin film of tin, tin-added indium or the like can be used, and a transparent electrode is more preferable. The cathode may be a single metal thin film or a co-evaporated thin film of different metals, as long as it is a solid metal capable of forming a vacuum deposition or sputtered film, but a work function is more preferable.
【０００６】また電極間に設けられる有機化合物からな
る有機電界発光物質としては、例えば、正孔輸送剤と電
子輸送能を有する発光剤または正孔輸送剤と発光剤およ
び電子輸送剤の組合せがある。更に上記組合せからなる
物質の混合物または該組合せからなる物質層の層間で成
分が連続して変化する傾斜構造を示すもの等である。ま
た、正孔輸送剤や電子輸送剤は、無機半導体であっても
よい。The organic electroluminescent substance made of an organic compound provided between the electrodes includes, for example, a hole-transporting agent and a luminescent agent having an electron-transporting ability or a combination of a hole-transporting agent and a luminescent agent and an electron-transporting agent. . Further, it may be a mixture of substances composed of the above combination, or a structure showing a graded structure in which the components continuously change between the layers of the material layer composed of the combination. Further, the hole transfer material and the electron transfer material may be an inorganic semiconductor.
【０００７】正孔輸送剤の具体例としては、芳香族アミ
ン誘導体、ポルフィン誘導体、フタロシアニン、ポリビ
ニルカルバゾールおよび無定形Ｐ型シリコン、無定形Ｐ
型炭化シリコン等が挙げられる。また電子輸送能を有す
る発光剤の具体例としては、８−オキシキノリンのアル
ミニウム錯体が挙げられる。そして、電子輸送剤の具体
例としては、オキサジアゾール誘導体、無定形ｎ型シリ
コン等がある。これら上記の化合物はそれぞれの性質を
有する代表的なものであり、本発明はこれらに限定され
るものではない。Specific examples of the hole transfer agent include aromatic amine derivatives, porphine derivatives, phthalocyanines, polyvinylcarbazole, amorphous P-type silicon and amorphous P.
Type silicon carbide and the like. Further, a specific example of the luminescent agent having an electron transporting ability is an aluminum complex of 8-oxyquinoline. Specific examples of the electron transfer agent include oxadiazole derivatives and amorphous n-type silicon. The above-mentioned compounds are typical compounds having respective properties, and the present invention is not limited to them.
【０００８】次ぎに本発明に使用する脱水剤としては、
ゼオライト、活性アルミナ、シリカゲル、酸化カルシウ
ムのような微粉末固体乾燥剤であるが、この中でも微粉
末ゼオライトが気体乾燥能力、電極金属との反応性がな
い点から好ましい。Next, as the dehydrating agent used in the present invention,
Although it is a fine powder solid desiccant such as zeolite, activated alumina, silica gel, and calcium oxide, among them, fine powder zeolite is preferable because it has no gas drying ability and no reactivity with the electrode metal.
【０００９】[0009]
【作用】以上のとおり、本発明は、有機薄膜電界発光素
子の周囲に保護ケースを設けて前記素子を外界から遮断
して、有機薄膜電界発光素子へ微粉末固体の乾燥剤を直
接接触させることで吸着している水分をすばやく除去
し、更に、保護ケースによって水分の供給を断つことに
より、有機薄膜電界発光素子の長期の耐久性に効果を発
揮するのである。As described above, according to the present invention, a protective case is provided around the organic thin film electroluminescent device to shield the device from the outside, and the organic thin film electroluminescent device is directly contacted with a fine powder solid desiccant. By quickly removing the water adsorbed by the step (3) and cutting off the water supply by the protective case, the long-term durability of the organic thin film electroluminescent element is effectively exhibited.
【００１０】[0010]
【実施例】以下、本発明の実施例について詳細に説明す
る。 実施例１ 基板ガラスに１０００ÅのＩＴＯ（酸化インジウム−酸
化錫膜）膜を形成した透明電極付きガラス基板（松崎真
空社製）をアセトン中で超音波洗浄し、次いで、エタノ
ール中で煮沸処理した。更に、５００℃加熱処理をし
た。この表面処理した透明電極付きガラス基板を真空装
置にセットし、５×１０-6torrの真空度でＮ，Ｎ′−ジ
フェニル−Ｎ，Ｎ′−（３−メチルフェニル）−１，
１′−ビフェニル−４，４′−ジアミン（ＴＰＤ）を４
００Å蒸着し、引続きＴＰＤと８−オキシキノリノアル
ミニュウム錯体(Alq3)との連続した濃度分布をもつ部分
（傾斜構造部）２００Åを形成し、引続きAlq3を４００
Å蒸着した。更に、マグネシウム(Mg)と銀(Ag)を１０：
１の原子比で２０００Å共蒸着し有機薄膜電界発光素子
を作製した。作製した素子を取り出し、電極端子を取り
付けた保護ケース内に該素子を固定し、更に微粉末ゼオ
ライトを充填した。この微粉末ゼオライトで充填され、
外界と遮断された電界発光素子を直流で駆動した結果、
緑色の発光が観察された。また、初期駆動電圧９Ｖ、発
光輝度１００ｃｄ／ｍ2 の条件で１０００時間連続発光
した後の発光表面は均一であった。EXAMPLES Examples of the present invention will be described in detail below. Example 1 A glass substrate with a transparent electrode (manufactured by Matsuzaki Vacuum Co., Ltd.) in which a 1000-liter ITO (indium oxide-tin oxide film) film was formed on a substrate glass was ultrasonically cleaned in acetone and then boiled in ethanol. Furthermore, heat treatment was performed at 500 ° C. This surface-treated glass substrate with a transparent electrode was set in a vacuum device, and N, N′-diphenyl-N, N ′-(3-methylphenyl) -1, at a vacuum degree of 5 × 10 −6 torr,
Add 1'-biphenyl-4,4'-diamine (TPD) to 4
And 00Å deposited, subsequently form a continuous portion having a concentration distribution (gradient structure portion) 200 Å of TPD and 8 oxy quinolinolato aluminum Niu arm complex (Alq 3), subsequently the Alq 3 400
Å It was vapor-deposited. Furthermore, magnesium (Mg) and silver (Ag) are added at 10:
An organic thin film electroluminescent device was prepared by co-evaporating 2000Å with an atomic ratio of 1. The produced element was taken out, fixed in a protective case to which an electrode terminal was attached, and further filled with fine powder zeolite. Filled with this fine powder zeolite,
As a result of driving the electroluminescent device isolated from the outside world with direct current,
Green emission was observed. In addition, the emission surface was uniform after 1000 hours of continuous emission under the conditions of an initial drive voltage of 9 V and an emission luminance of 100 cd / m 2 .
【００１１】比較例１ 実施例１と同様の条件で作製した有機薄膜電界発光素子
を微粉末ゼオライトで外界と遮断せずに４０％ＲＨの大
気中において発光輝度８０ｃｄ／ｍ2 の条件で駆動させ
た。その結果、３時間後には、陰極金属が変質して大き
な非発光部が多数形成され陰極金属に膨れが発生した。Comparative Example 1 An organic thin film electroluminescent device produced under the same conditions as in Example 1 was driven under the condition of emission luminance of 80 cd / m 2 in the atmosphere of 40% RH without blocking the outside with fine powder zeolite. It was As a result, after 3 hours, the cathode metal deteriorated, a large number of large non-light emitting portions were formed, and the cathode metal swelled.
【００１２】[0012]
【発明の効果】以上説明したように、本発明によれば信
頼性が大幅に改善された有機薄膜電界発光素子が提供さ
れる。このように、本発明により有機薄膜電界発光素子
を実用レベルまで引き上げることができ、その工業的価
値は高い。As described above, according to the present invention, an organic thin film electroluminescent device having significantly improved reliability is provided. As described above, according to the present invention, the organic thin film electroluminescent device can be raised to a practical level, and its industrial value is high.
Claims (2)
の間に、少なくとも一種類の有機化合物を含む電界発光
物質層を設けた有機薄膜電界発光素子に於て、該素子の
周囲に保護ケースを設けて該保護ケース内に微粉末固体
脱水剤を充填してなることを特徴とする電界発光素子。1. An organic thin film electroluminescent device comprising an electroluminescent material layer containing at least one kind of organic compound between an anode and a cathode, at least one of which is transparent, and a protective case is provided around the device. An electroluminescent device, characterized in that the protective case is filled with a fine powder solid dehydrating agent.
オライトである請求項１記載の電界発光素子。2. The electroluminescent device according to claim 1, wherein the fine powder solid dehydrating agent is zeolite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4330424A JPH06176867A (en) | 1992-12-10 | 1992-12-10 | Electroluminescent element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4330424A JPH06176867A (en) | 1992-12-10 | 1992-12-10 | Electroluminescent element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06176867A true JPH06176867A (en) | 1994-06-24 |
Family
ID=18232460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4330424A Pending JPH06176867A (en) | 1992-12-10 | 1992-12-10 | Electroluminescent element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06176867A (en) |
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| WO2001019142A1 (en) * | 1999-09-03 | 2001-03-15 | Uniax Corporation | Encapsulation of organic electronic devices |
| JP2001185347A (en) * | 1999-12-27 | 2001-07-06 | Nippon Seiki Co Ltd | Organic el element |
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| US6583557B2 (en) | 2000-04-26 | 2003-06-24 | Canon Kabushiki Kaisha | Organic luminescent element |
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-
1992
- 1992-12-10 JP JP4330424A patent/JPH06176867A/en active Pending
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|---|---|---|---|---|
| US6284342B1 (en) | 1998-06-12 | 2001-09-04 | Tdk Corporation | Organic EL display assembly |
| JP2003508891A (en) * | 1999-09-03 | 2003-03-04 | デュポン ディスプレイズ インコーポレイテッド | Encapsulation of organic electronic devices |
| WO2001019142A1 (en) * | 1999-09-03 | 2001-03-15 | Uniax Corporation | Encapsulation of organic electronic devices |
| US6660409B1 (en) | 1999-09-16 | 2003-12-09 | Panasonic Communications Co., Ltd | Electronic device and process for producing the same |
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| US7169636B2 (en) | 2002-12-13 | 2007-01-30 | Semiconductor Energy Laboratory Co., Ltd. | Manufacturing method of light emitting device and manufacturing device thereof |
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