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US5756224A
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Organic electroluminescent component
Assignee: US Philips Corp
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Filing: 1995-08-10
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Granted: 1998-05-26
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Expires: 2015-08-10
Abstract
Abstract An organic electroluminescent component with a layer structure comprising a) a substrate layer, b) a first transparent electrode layer, c) one or several functional optoelectronic layer(s) with c1) possibly, one or several p-type organic materials with one or several singlet states and one or several triplet states, and c2) a luminescent material with one or several organometallic complexes of a rare earth metal ion with organic ligands, in which the rare earth metal ion has an emitting state and the organic ligands have one or several singlet states and one or several triplet states, and c3) one or several n-type organic materials with one or several singlet states and one or several triplet states, and d) a second electrode, wherein the triplet state of lowest energy of the ligands is lower than the triplet states of lowest energy of the n-type and/or the p-type organic materials but higher than above the emitting state of the rare earth metal ion excels through a surprisingly increased luminous efficacy, and in addition has a very good thermal stability while it can be manufactured in a simple process.
Inventors
- 👤 Herbert Friedrich Borner
- 👤 Ulrich Kynast
- 👤 Wolfgang Busselt
- 👤 Markus Haase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:55
CPC Classifications
H; H10; H10F; H10F39/00; H10F39/10; H10F39/12; H10F39/191; H10F39/195; H10K; H10K50/00; H10K50/10; H10K50/11; H10K50/80; H10K59/00; H10K59/60; H10K85/00; H10K85/30; H10K85/351; H10K85/60; H10K85/631; H10F55/00; H10F55/18; H10H; H10H29/00; H10H29/10; H10H29/14; H10H29/142; H10K2101/00; H10K2101/10; H10K2102/00; H10K2102/10; H10K2102/101; H10K2102/103; H10K59/10; H10K59/17; H10K85/10; H10K85/141; H10K85/146; Y; Y10; Y10S; Y10S428/00; Y10S428/917
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
179 words
An organic electroluminescent component with a layer structure comprising a) a substrate layer, b) a first transparent electrode layer deposited atop said substrate layer c) one or several functional optoelectronic layer(s) deposited atop said first electrode layer and comprising, c1) one or several p-type organic materials with one or several single states and one or several triplet states, c2) a luminescent material with one or several organometallic complexes of a rare earth metal ion with organic ligands, in which the rare earth metal ion has an emitting state and the organic ligands have one or several single states and one or several triplet states, and c3) one or several n-type organic materials with one or several single states and one or several triplet states, and wherein the triplet state of lowest energy of the ligands is lower than the triplet states of lowest energy of any of the n-type and the p-type organic materials but higher than above the emitting state of the rare earth metal ion, and e a second electrode layer deposited atop said optoelectronic layer (s).
Claim 2
Dependent Claim
179 words
An organic electroluminescent component with a layer structure comprising a) a substrate layer, b) a first transparent electrode layer deposited atop said substrate layer c) one or several functional optoelectronic layer(s) deposited atop said first electrode layer and comprising, c1) one or several p-type organic materials with one or several single states and one or several triplet states, c2) a luminescent material with one or several organometallic complexes of a rare earth metal ion with organic ligands, in which the rare earth metal ion has an emitting state and the organic ligands have one or several single states and one or several triplet states, and c3) one or several n-type organic materials with one or several single states and one or several triplet states, and wherein the triplet state of lowest energy of the ligands is lower than the triplet states of lowest energy of any of the n-type and the p-type organic materials but higher than above the emitting state of the rare earth metal ion, and e a second electrode layer deposited atop said optoelectronic layer (s).
Claim 3
Dependent Claim
63 words
An organic electroluminescent component as claimed in claim 1, characterized in that said one or several p-type organic material and said luminescent material are present in a first, homogeneous layer, and said one or several n-type organic material is present in a second layer, while the lowest triplet state of the p-type organic material is lower than that of the n-type organic material.
Claim 4
Dependent Claim
63 words
An organic electroluminescent component as claimed in claim 1, characterized in that said one or several p-type organic material is contained in a first layer and said one or several n-type organic material and said luminescent material are contained in a second, homogeneous layer, while the lowest triplet state of the n-type organic material is lower than that of the p-type organic material.
Claim 5
Dependent Claim
50 words
An organic electroluminescent component as claimed in claim 1, characterized in that said one on several p-type organic material is present together with said luminescent material in a first homogenous layer, and said one on several n-type organic material together with said luminescent material are in a second homogenous layer.
Claim 6
Dependent Claim
54 words
An organic electroluminescent component as claimed in claim 1, characterized in that said one or several p-type organic materials, the electroluminescent material, and said one or several n-type organic materials are contained in one homogeneous layer, while the redox potentials of the n- and p-type materials are greater than those of the electroluminescent material(s).
Claim 7
Dependent Claim
57 words
An organic electroluminescent component as claimed in claim 1, characterized in that one or several p-type organic materials, one or several n-type organic materials, and the luminescent material are each arranged in a separate layer, while the layer with the luminescent material lies between the layer with the p-type organic material(s) and that with the n-type material(s).
Claim 8
Dependent Claim
39 words
An organic electroluminescent component as claimed in claim 1, characterized in that the p-type organic materials are a molecule-doped organic polymer, a semiconducting conjugated polymer, an intrinsically conducting organic polymer, or a p-type organic monomer, or a mixture thereof.
Claim 9
Dependent Claim
28 words
An organic electroluminescent component as claimed in claim 1, characterized in that the p-type organic material is formed by the organic ligands of the rare earth metal ion.
Claim 10
Dependent Claim
35 words
An organic electroluminescent component as claimed in claim 1, characterized in that the n-type organic materials are a molecule-doped organic polymer, an intrinsically conducting organic polymer, or an n-type organic monomer, or a mixture thereof.
Claim 11
Dependent Claim
27 words
An organic electroluminescent component as claimed in claim 1, characterized in that the ligands of the rare earth metal ions are chelating oxygen, sulphur, or nitrogen ligands.
Claim 12
Dependent Claim
35 words
An organic electroluminescent component as claimed in claim 1, characterized in that the p-type organic material is poly(vinylcarbazol), the complex of the rare earth metal ion is europium(III)-phenanthroline-tri-thenoyltrifluoro-acetylacetonate and the n-type material is 2-(4-biphenyllyl)-5-(tert.butylphenyl)-1,3,4-oxadiazol PBD.
Claim 13
Dependent Claim
41 words
An organic electroluminescent component as claimed in claim 1, characterized in that the p-type organic material is poly(N-vinylcarbazol) the complex of the rare earth metal ion is terbium(III)-di-bipyridyl-tribenzoat Tb Cbenz) 3 bipy 2 , and the n-type organic material is 2,5-diphenyl-1,3,4-oxadiazole.
References Cited (Backward Citations)
US5128587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-05-25 | 2001-11-24 | 2002-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-25 | 2005-11-24 | 2006-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-25 | 2009-11-24 | 2010-05-26 | $7700.00 | Window Closed / Lapsed |