EP1171921A1 - Composant lectroluminescent organique - Google Patents

Composant lectroluminescent organique

Info

Publication number
EP1171921A1
EP1171921A1 EP00920388A EP00920388A EP1171921A1 EP 1171921 A1 EP1171921 A1 EP 1171921A1 EP 00920388 A EP00920388 A EP 00920388A EP 00920388 A EP00920388 A EP 00920388A EP 1171921 A1 EP1171921 A1 EP 1171921A1
Authority
EP
European Patent Office
Prior art keywords
layer
component according
metal
top electrode
mel
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.)
Withdrawn
Application number
EP00920388A
Other languages
German (de)
English (en)
Inventor
Andreas Kanitz
Matthias STÖSSEL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ams Osram International GmbH
Original Assignee
Osram Opto Semiconductors GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Osram Opto Semiconductors GmbH filed Critical Osram Opto Semiconductors GmbH
Publication of EP1171921A1 publication Critical patent/EP1171921A1/fr
Withdrawn legal-status Critical Current

Links

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
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/12—Light sources with substantially two-dimensional radiating surfaces
    • H05B33/26—Light sources with substantially two-dimensional radiating surfaces characterised by the composition or arrangement of the conductive material used as an electrode
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/805—Electrodes
    • H10K59/8052—Cathodes

Definitions

  • the invention relates to an organic electroluminescent component, in particular an organic light-emitting diode.
  • LC displays are not self-emitting and can therefore only be read or recognized easily in particularly favorable ambient lighting conditions. In most cases, this requires a backlighting device, which multiplies the thickness of the flat screen. In addition, the majority of the electrical power consumption is then required for the lighting, and a higher voltage is required for the operation of the lamps or fluorescent tubes, which is usually generated from batteries or accumulators with the aid of “voltage-up converters”. Further disadvantages are the greatly restricted viewing angle of the LC displays and the long switching times of individual pixels, which are typically a few milliseconds and are also strongly temperature-dependent. The delayed image build-up is extremely disruptive when used in transport or video applications, for example.
  • OLEDs organic light-emitting diodes
  • the switching times are around one microsecond and are only slightly temperature-dependent, which enables use for video applications.
  • the reading angle is almost 180 °, and polarization foils, as are required in LC displays, are omitted, so that a greater brightness of the display elements can be achieved. Further advantages are the usability of flexible and non-planar substrates as well as simple and inexpensive production.
  • Organic light-emitting diodes are typically constructed as follows.
  • a transparent substrate for example glass
  • a transparent electrode bottom electrode, anode
  • ITO indium tin oxide
  • the transparent electrode is then structured using a photolithographic process.
  • One or more organic layers consisting of polymers, oligomers, low molecular weight compounds or mixtures are placed on the substrate with the structured electrode of this, applied.
  • polymers are polyaniline, poly (p-phenylene-vinylene) and poly (2-methoxy-5- (2'-ethyl) - hexyloxy-p-phenylene-vinylene).
  • low molecular weight, preferably positive charge-transporting compounds are N, N'-bis (3-methylphenyl) -N, N '-bis- (phenyl) -benzidine (-TPD), 4,4', 4 "- Tris- (N-3-methylphenyl-N-phenylamino) -triphenylamine (-MTDATA) and 4, 4 ', 4 "-Tris- (carbazol-9-yl) -triphenylamine (TCTA).
  • Hydroxyquinoline aluminum III salt (Alq 3 ) is used as an emitter, which may be doped with suitable chromophores (quinacridone derivatives, aromatic hydrocarbons, etc.).
  • polymers are usually applied from the liquid phase by knife coating or spin coating, and low-molecular and oligomeric compounds are mostly deposited from the gas phase by vapor deposition or “physical vapor deposition * (PVD).
  • PVD physical vapor deposition *
  • the total layer thickness can be between 10 nm and 10 ⁇ m, typically it is in the range between 50 and 200 nm.
  • a counterelectrode (top electrode, cathode) is applied to the organic layer (s), which usually consists of a metal, a metal alloy or a thin insulator layer and a thick metal layer.
  • the cathode layer is usually produced by vapor deposition by thermal evaporation, electron beam evaporation or sputtering.
  • metals are used as the cathode material, they must have a low work function (typically ⁇ 3.7 eV) so that electrons can be injected efficiently into the organic semiconductor.
  • a low work function typically ⁇ 3.7 eV
  • alkali metals, alkaline earth metals or rare earth metals are used for this; the layer thickness is between 0.2 nm and a few hundred nanometers, but generally a few 10 nanometers.
  • a nobler, inert metal such as aluminum (Al), copper (Cu), silver (Ag) or gold (Au) to the cathode layer, which protects the base metal layer from moisture and Protects atmospheric oxygen.
  • an alloy of an efficiently electron-emitting but corrosion-prone base metal (work function ⁇ 3.7 eV) and a corrosion-resistant noble metal, such as Al, Cu, Ag and Au used.
  • the proportion of the base metal in the alloy can be between a few parts per thousand and about 90%.
  • the alloys are mostly produced by simultaneous deposition of the metals from the gas phase, for example by co-evaporation, simultaneous sputtering with multiple sources and sputtering using alloy targets.
  • a layer of a noble metal, such as Al, Cu, Ag or Au is usually also applied to such cathodes as corrosion protection.
  • Cathodes made of noble metals i.e. Metals with a work of> 3.7 eV are very inefficient when used in direct contact with the organic semiconductor
  • Electron injectors if a thin insulating intermediate layer (layer thickness generally between 0.2 and 5 nm) is arranged between the uppermost electron-conducting organic layer and the metal electrode, the efficiency of the light-emitting diodes increases considerably. Oxides, such as aluminum oxide, alkali and alkaline earth oxides and other oxides, as well as alkali and alkaline earth fluorides come as an insulating material for such an intermediate layer (see: Appl. Phys. Lett., Vol. 71 (1997), pages 2560 to 2562 ; U.S. Patent 5,677,572; EP-OS 0 822 603).
  • a metal electrode is then applied to the thin insulating intermediate layer, which is made of a pure metal or a metal alloy consists.
  • the insulating material can also be applied together with the electrode material by co-evaporation (Appl. Phys. Lett., Vol. 73 (1998), pages 1185 to 1187).
  • the object of the invention is to design an organic electrolytic component, in particular an organic light-emitting diode, in such a way that on the one hand a hermetic sealing of the top electrode can be dispensed with and on the other hand the selection of materials that can be used on the cathode side is increased .
  • a component which is characterized by - a transparent bottom electrode located on a substrate,
  • top electrode made of a metal inert to oxygen and moisture
  • At least one organic functional layer and arranged between the bottom electrode and the top electrode
  • (Mel) (Me2) F m + n containing charge carrier injection layer, where the following applies: m and n are each an integer corresponding to the value of the metals Mel and Me2 (the metal Mel has the value m, the metal Me2 the value) n),
  • Me2 Mg, AI, Ca, Zn, Ag, Sb, Ba, Sm or Yb, with the proviso: Mel ⁇ Me2.
  • the essential feature of the organic electroluminescent component according to the invention is therefore m a specific structure on the cathode side, namely m the combination of a top electrode which is indifferent to environmental influences with a charge carrier interaction layer made of a special metal complex salt of the composition (Mel) (Me2) F m + n , ie a double fluo ⁇ d. Because of this The top electrode may not be hermetically sealed or sealed.
  • the special material for the charge carrier injection layer not only widens the range of materials that can be used on the cathode side, but also improves the emission properties through this material, which results in a significantly higher luminous efficacy, a reduced operating voltage and a longer service life Expression comes.
  • the charge carrier injection layer (made of a special metal complex salt) is preferably arranged as a thin insulating layer between the top electrode and the organic functional layer, in the presence of several functional layers between the top functional layer and the top electrode. If, in the component according to the invention, there is also an electron transport layer on the (top) functional layer, the charge carrier injection layer is arranged between this layer and the top electrode. In all of these cases, the thickness of the charge carrier injection layer is preferably approximately 0.1 to 20 nm.
  • the charge carrier injection layer can also be integrated in the top electrode, in the (top) organic functional layer or in an electron transport layer that may be present, i.e. the metal complex salt is then part of one of the layers mentioned.
  • Such layers can advantageously be produced by co-evaporation of the corresponding materials, for example by co-evaporation of the top electrode material and the metal complex salt.
  • the metal complex salt has the composition (Mel) (Me2) F m + n , where m and n correspond to the valency of the respective metal.
  • the metal Mel is preferably lithium (Li), the metal Me2 preferably magnesium (Mg), aluminum (Al), calcium (Ca), silver (Ag) or barium (Ba).
  • One of the double fluorides LiAgF 2 , LiBaF 3 and L1AIF 4 is advantageously used as the metal complex salt.
  • Other such double fluorides are, for example, NaAgF 2 , KAgF 2 , LiMgF 3 , LiCaF 3 , CaAgF 3 and MgBaF 4 .
  • Complex salts of this type and processes for their preparation are known per se (see the exemplary embodiments and, for example, “Gelins Handbuch der -Anorganischen Chemie *, 8th edition (1926), system number 5 (fluorine), pages 58 to 72).
  • the top electrode which generally has a thickness> 100 nm, preferably consists of one of the following
  • Metals aluminum (AI), silver (Ag), platinum (Pt) and gold (Au).
  • the electrode material can also be an alloy of two of these metals.
  • Other metals for the top electrode are magnesium (Mg), calcium (Ca), zinc (Zn), antimony (Sb) and barium (Ba).
  • the bottom electrode is generally made of indium tin oxide (ITO). Other possible materials for the bottom electrode are tin oxide and bismuth oxide. Glass is usually used as the substrate for the bottom electrode.
  • ITO indium tin oxide
  • Other possible materials for the bottom electrode are tin oxide and bismuth oxide. Glass is usually used as the substrate for the bottom electrode.
  • the component according to the invention preferably has two organic functional layers, namely a perforated layer arranged on the bottom electrode, which transports positive charge carriers, and one located thereon
  • Emission layer which is also referred to as a luminescent layer.
  • a luminescent layer instead of a perforated layer, two or more perforated layers can advantageously also be used.
  • the materials for the layers mentioned are known per se.
  • the hole-conducting layer (s) in the present case preferably N, N'-bis (3-methylphenyl) -N, N r -bis- (phenyl) - benzidine (m-TPD), 4, 4 ', "-Tris- (N-1-naphthyl-N-phenylamino) triphenylamine (Naphdata) or N, N'-bis-phenyl-N, N'-bis- ⁇ -naphthyl-benzidine (-NPD).
  • the material for the emission layer is preferably hydroxyquinoline aluminum III salt (Alq 3 ). This compound can also serve for electron transport at the same time.
  • quinacridone can also be used for the emission layer an optionally present electron transport layer of one of the oxadiazole derivatives known for this purpose.
  • the invention offers the following further advantages:
  • the operating voltage is significantly reduced and the luminous efficacy and efficiency are significantly increased.
  • compounds such as LiAlF 4 have the advantage that they are less hygroscopic, which makes handling and storage easier.
  • the double fluorides are also easier to evaporate and are less basic (than LiF), which increases the compatibility with the organic functional layers.
  • FIG. 1 shows a conventional OLED display
  • FIG. 2 shows an OLED display according to the invention
  • FIG. 3 luminance / voltage characteristic curves
  • FIG. 4 efficiency / luminance characteristic curves
  • Figure 5 is a comparison of the luminance of different
  • Lithium aluminum hydride LiAlH 4 is carefully hydrolyzed with distilled water, then reacted with an excess of hydrofluoric acid (HF).
  • HF hydrofluoric acid
  • the precipitated metal complex salt LiAlF-j is suctioned off, washed several times with water and ethanol and then dried.
  • Metal complex salt LiAgF 2 from. After the addition of the same volume of ethanol, the complex salt is suctioned off, washed with ethanol and dried.
  • the metal complex salt LiCaF 3 is prepared in a corresponding manner, the reaction solution being concentrated if necessary.
  • the metal complex salt LiMgF 3 can be produced in the same way, using lithium methylate and magnesium methylate as starting materials.
  • ITO layer (12) with a thickness of approximately 100 nm is applied to a glass substrate (11). This layer is then structured photolithographically in such a way that a stripe-shaped structure is produced.
  • a layer of m-TPD (13) with a layer is first applied to the coated substrate pretreated in this way - by thermal evaporation
  • a layer (15) made of a magnesium-silver alloy (Mg: Ag mixing ratio 10: 1) with a thickness of approximately 150 nm is applied to the organic layer (14) by thermal evaporation using two evaporator sources operated simultaneously and then, also by thermal evaporation, a layer (16) of pure silver with a thickness of approx. 150 nm.
  • the metal layers are evaporated through a mask with strip-shaped openings, so that cathode strips are formed which are perpendicular to the ITO strips. In this way, organic light-emitting diodes with an active area of 2 x 2 mm 2 are created at the intersections of the ITO tracks with the metal tracks - together with the organic layers in between. In operation, the ITO layer is contacted positively, the metal tracks are contacted negatively.
  • Mg Ag mixing ratio 10: 1
  • ITO layer (22) with a thickness of approximately 100 nm is applied to a glass substrate (21). This layer is then structured photolithographically in such a way that a stripe-shaped structure is produced.
  • a layer of m-TPD (23) with a thickness of approx. 100 nm is first applied to the coated substrate treated in this way - by thermal evaporation and then a layer (24) made of Alq 3 with a thickness of approx. 65 nm.
  • a layer (25) made of LiAlF 4 with a thickness of approximately 1 nm is applied to the organic layer (24) by thermal evaporation and then, also by thermal evaporation, a layer (26) made of aluminum, which serves as a top electrode with a thickness of about 150 nm.
  • the two layers are evaporated according to Example 4 through a mask with strip-shaped openings, so that organic light-emitting diodes are formed. In operation, the ITO layer is contacted positively, the top electrode is negative.
  • Table 1 summarizes the results of measurements on the OLEDs in accordance with Examples 4 and 5.
  • the characteristic parameters here are the threshold voltage (electroluminescence), the voltage and the efficiency, in each case at a luminance of 1500 cd / m 2 , the maximum luminance and the luminance at a current density of 50 mA / cm 2 .
  • Table 1 summarizes the results of measurements on the OLEDs in accordance with Examples 4 and 5.
  • the characteristic parameters here are the threshold voltage (electroluminescence), the voltage and the efficiency, in each case at a luminance of 1500 cd / m 2 , the maximum luminance and the luminance at a current density of 50 mA / cm 2 .
  • the threshold and operating voltage of the display according to the invention are below the corresponding values for the conventional display (example 4), although the thickness of the LiAlF-j layer has not been optimized.
  • the values for the efficiency and the luminance achieved in the display according to the invention are above the corresponding values in the conventional display.
  • FIG. 3 shows the luminance / voltage characteristics of the displays according to Examples 4 and 5. From this illustration, the increased luminance of the display according to the invention can be clearly seen.
  • an aluminum cathode is used, with which efficiencies are normally achieved which are approximately 40 to 50% below the corresponding values for Mg / Ag cathodes (example 4).
  • aluminum is more stable than magnesium against environmental influences such as atmospheric oxygen and moisture.
  • the efficiency of OLEDs with an Al cathode can be increased, even beyond the corresponding values of OLEDs with a Mg / Ag cathode . In this way highly efficient OLEDs with a stable cathode.
  • ITO layer with a thickness of approx. 100 nm is applied to a glass substrate. This layer is then structured by photolithography in such a way that a stripe-shaped structure is produced. A layer of naphdata with a thickness of approx. 55 nm is first applied to the coated substrate pretreated in this way - by thermal evaporation, then a layer of ⁇ -NPD with a thickness of approx. 5 nm and finally a layer of Alq 3 a thickness of approx. 65 nm.
  • a layer of a magnesium-silver alloy (Mg: Ag mixing ratio 10: 1) with a thickness of approx. 150 nm is applied to the uppermost organic layer (made of Alq 3 ) by thermal evaporation using two evaporator sources operated at the same time. also by thermal evaporation, a layer of pure silver with a thickness of approx. 150 nm.
  • the metal layers are evaporated through a mask with strip-shaped openings, so that cathode strips are formed which are perpendicular to the ITO strips. In this way, organic light-emitting diodes with an active area of - together with the organic layers in between - are created at the points of intersection of the ITO lines
  • a display with three organic functional layers is constructed.
  • a layer of aluminum with a thickness of 150 nm is then applied to the uppermost organic layer (made of Alq 3 ) by thermal evaporation - in a corresponding manner.
  • a display with three organic functional layers is constructed.
  • a layer of LiF with a thickness of approx. 0.5 nm is then applied to the uppermost organic layer (made of Alq 3 ) by thermal evaporation and then, also by thermal evaporation, a layer of aluminum with a thickness of approx. 150 nm.
  • the two layers are evaporated according to Example 6 through a mask with strip-shaped openings, so that organic light-emitting diodes are formed.
  • the ITO layer is contacted positively, the AI cathode negatively.
  • a display with three organic functional layers is constructed.
  • a layer of L1AIF 4 with a thickness of approx. 0.5 nm is then applied to the uppermost organic layer (made of Alq 3 ) by thermal evaporation and then, also by thermal evaporation, a layer made of aluminum, which serves as a top electrode With a thickness of approx. 150 nm.
  • the structuring and the contacting take place in accordance with Example 8.
  • a display with three organic functional layers is constructed.
  • a layer of LiAgF 2 with a thickness of about 0.5 nm is then applied to the uppermost organic layer (made of Alq 3 ) by thermal evaporation, and a layer of aluminum, which serves as the top electrode, is also applied thereon, also by thermal evaporation with a thickness of approx. 150 nm.
  • the structuring and the contacting take place according to example 8.
  • a display with three organic functional layers is constructed.
  • a layer of LiBaF 3 with a thickness of approximately 0.5 nm is then applied to the uppermost organic layer (made of Alq 3 ) by thermal evaporation and then, also by thermal evaporation, a layer made of aluminum, which serves as a top electrode with a thickness of approx. 150 nm.
  • the structuring and the contacting take place according to example 8.
  • Table 2 summarizes the results of measurements on the OLEDs in accordance with Examples 6 to 11.
  • the characteristic parameters here are the threshold voltage (of the electroluminescence), the voltage and the efficiency, in each case at a luminance of 1500 cd / m 2 , as well as the luminance at a current density of 50 mA / cm 2 .
  • the threshold and the operating voltages of the displays according to the invention are comparable to the values which are used for displays with a Mg / Ag -Cathode or with an Al cathode and a LiF intermediate layer (Examples 6 and 8) are obtained and are significantly below the corresponding values for a display with pure Al cathode (Example 7).
  • the displays according to the invention are also comparable in terms of efficiency and luminance to the Mg / Ag and Al-LiF displays, a display with a LiBaF 3 charge carrier injection layer (example 11) in particular showing high values.
  • FIG. 4 shows the efficiency / luminance characteristics of the displays according to Examples 6 to 11. From this representation in particular the outstanding position of an Al-LiBaF 3 display according to the invention is clearly evident.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

Composant électroluminescent organique qui est pourvu d'une électrode inférieure (22) transparente placée sur un substrat (21), d'une électrode supérieure (26) constituée d'un métal inerte vis-à-vis de l'oxygène et de l'humidité, d'au moins une couche fonctionnelle organique (23, 24) placée entre l'électrode inférieure (22) et l'électrode supérieure (26) et d'une couche d'injection (25) des porteurs de charge contenant un sel complexe métallique de formule (Me1)(Me2)Fm+n. Dans ladite formule, m et n sont chacun un nombre entier correspondant à la valence des métaux Me1 et Me2, Me1 représente Li, Na, K, Mg ou Ca, Me2 représente Mg, Al, Ca, Zn, Ag, Sb, Ba, Sm ou Yb, à condition que Me1 ≠ Me2.
EP00920388A 1999-03-24 2000-03-13 Composant lectroluminescent organique Withdrawn EP1171921A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19913350 1999-03-24
DE19913350 1999-03-24
PCT/DE2000/000783 WO2000057499A1 (fr) 1999-03-24 2000-03-13 Composant électroluminescent organique

Publications (1)

Publication Number Publication Date
EP1171921A1 true EP1171921A1 (fr) 2002-01-16

Family

ID=7902243

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00920388A Withdrawn EP1171921A1 (fr) 1999-03-24 2000-03-13 Composant lectroluminescent organique

Country Status (8)

Country Link
US (1) US6734622B1 (fr)
EP (1) EP1171921A1 (fr)
JP (1) JP2002540566A (fr)
KR (1) KR20010109321A (fr)
CN (1) CN1201414C (fr)
CA (1) CA2367303A1 (fr)
TW (1) TW488185B (fr)
WO (1) WO2000057499A1 (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002228802A (ja) * 2001-02-07 2002-08-14 Nec Tokin Corp フッ化物結晶からなる真空紫外領域用光学部材および光学部材用コーティング材
US6888172B2 (en) * 2003-04-11 2005-05-03 Eastman Kodak Company Apparatus and method for encapsulating an OLED formed on a flexible substrate
US6998776B2 (en) 2003-04-16 2006-02-14 Corning Incorporated Glass package that is hermetically sealed with a frit and method of fabrication
CN100463243C (zh) * 2004-06-14 2009-02-18 北京大学 一种顶出光电极及其制备方法
US7812522B2 (en) * 2004-07-22 2010-10-12 Ifire Ip Corporation Aluminum oxide and aluminum oxynitride layers for use with phosphors for electroluminescent displays
CN100399865C (zh) * 2004-08-23 2008-07-02 北京大学 一种顶出光电极及其制备方法
CN100456516C (zh) * 2005-06-15 2009-01-28 北京大学 顶出光电极及其制备方法
TWI268736B (en) 2005-08-10 2006-12-11 Au Optronics Corp Organic electroluminescent device (OELD) and display including the same
JP2007182401A (ja) * 2006-01-06 2007-07-19 Bando Chem Ind Ltd 新規な芳香族第３級アミン類とその利用
GB2475247B (en) * 2009-11-10 2012-06-13 Cambridge Display Tech Ltd Organic optoelectronic device and method
KR101127767B1 (ko) 2009-12-09 2012-03-16 삼성모바일디스플레이주식회사 유기 발광 장치
KR101182447B1 (ko) 2010-06-16 2012-09-12 삼성디스플레이 주식회사 유기 발광 소자 및 그 제조 방법
KR20120004193A (ko) 2010-07-06 2012-01-12 삼성모바일디스플레이주식회사 유기 발광 장치
JP6109074B2 (ja) * 2010-11-17 2017-04-05 スリーエム イノベイティブ プロパティズ カンパニー 銀のエレクトロマイグレーションの低減方法及びそれによって製造される物品
EP2586767A1 (fr) 2011-10-25 2013-05-01 Bayer MaterialScience AG Procédé de fabrication de diarylcarbonates et de polycarbonates
KR101918712B1 (ko) 2012-08-02 2018-11-15 삼성디스플레이 주식회사 유기 발광 장치
WO2014035954A2 (fr) 2012-08-30 2014-03-06 Corning Incorporated Verre sans antimoine, fritte sans antimoine et boîtier de verre qui est hermétiquement scellé à l'aide de la fritte
CN103840089B (zh) * 2012-11-20 2016-12-21 群康科技(深圳)有限公司 有机发光二极管装置及其显示面板
CN115010151B (zh) * 2022-06-24 2023-08-18 山东海容电源材料有限公司 锂离子电解液配制用锂盐和锂离子电解液

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3529543B2 (ja) * 1995-04-27 2004-05-24 パイオニア株式会社 有機エレクトロルミネッセンス素子
EP0835597B1 (fr) * 1996-04-25 2003-02-19 Koninklijke Philips Electronics N.V. Dispositif electroluminescent organique
US5776622A (en) 1996-07-29 1998-07-07 Eastman Kodak Company Bilayer eletron-injeting electrode for use in an electroluminescent device
US5677572A (en) 1996-07-29 1997-10-14 Eastman Kodak Company Bilayer electrode on a n-type semiconductor
US6121727A (en) * 1997-04-04 2000-09-19 Mitsubishi Chemical Corporation Organic electroluminescent device
JP3684826B2 (ja) * 1997-04-04 2005-08-17 三菱化学株式会社 有機電界発光素子
JPH10289784A (ja) * 1997-04-14 1998-10-27 Mitsubishi Chem Corp 有機電界発光素子
JPH11251067A (ja) * 1998-03-02 1999-09-17 Junji Kido 有機エレクトロルミネッセント素子

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0057499A1 *

Also Published As

Publication number Publication date
CA2367303A1 (fr) 2000-09-28
KR20010109321A (ko) 2001-12-08
CN1344428A (zh) 2002-04-10
JP2002540566A (ja) 2002-11-26
WO2000057499A1 (fr) 2000-09-28
US6734622B1 (en) 2004-05-11
CN1201414C (zh) 2005-05-11
TW488185B (en) 2002-05-21

Similar Documents

Publication Publication Date Title
DE69724129T2 (de) Lichtemittierende organische vorrichtungen mit verbesserter kathode
WO2000057499A1 (fr) Composant électroluminescent organique
DE69737866T2 (de) Elektrodenabscheidung für organische lichtemittierende vorrichtungen
DE69734131T2 (de) Zweischichtige elektroneninjektionselektrode zur verwendung in einer elektrolumineszenzvorrichtung
US20030153141A1 (en) Screen printable electrode for light emitting polymer device
DE69815576T2 (de) Organisches elektrolumineszentes Bauteil
US6320311B2 (en) Organic EL device having a hole injecting electrode including a transparent electrode and a metal electrode
DE69937668T2 (de) Elektrolumineszentes element
JP2701738B2 (ja) 有機薄膜ｅｌ素子
JP2005183406A6 (ja) 有機発光デバイス
DE112009001283T5 (de) Organisches Elektrolumineszenzelement
EP0966050A2 (fr) Diode électroluminescente organique
JP2004319424A (ja) 有機電界発光ディスプレイ装置
EP1982362A2 (fr) Composant optoélectronique organique
WO2007076960A1 (fr) Composant organique
DE102011006287B4 (de) Organische lichtemittierende Vorrichtung.
US6570180B2 (en) Organic light-emitting device capable of high-quality display
JPH05326143A (ja) 有機電界発光素子
JPH03141588A (ja) 電界発光素子
JP2000277252A (ja) 有機電場発光パネルとその製造方法
JPH0693256A (ja) 有機薄膜発光素子
JPH0482197A (ja) 薄膜ｅｌ素子
US6841270B2 (en) Organic light-emitting device having pyrylium salt as charge transport material
JP2712634B2 (ja) 有機薄膜ｅｌ素子
JPS5991697A (ja) 薄膜ｅｌ素子

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20010925

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: OSRAM OPTO SEMICONDUCTORS GMBH

17Q First examination report despatched

Effective date: 20081023

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20090505