US5486406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Green-emitting organometallic complexes for use in light emitting devices
Assignee: Universal Display Corp
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Filing: 1994-11-07
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Granted: 1996-01-23
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Expires: 2014-11-07
Abstract
Abstract A new class of organometallic complexes for use in electroluminescent (EL) devices and a method of preparation are disclosed. The organometallic complexes are prepared by mixing organic ligands with metal salts in the presence of a base and a layer is formed in an EL device by vacuum evaporation. The organometallic material in the EL device serves as either an electron transporting layer or a light emission layer, or both.
Inventors
- 👤 Song Q. Shi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:15
CPC Classifications
C; C07; C07F; C07F3/00; H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; B; B32; B32B; B32B9/00; C07D; C07D249/00; C07D249/16; C07D249/18; C07D249/20; C09; C09K; C09K11/00; C09K11/06; Y; Y10; Y10S; Y10S428/00; Y10S428/917; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24917; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
118 words
An organic light emitting device comprising: a first conductive layer; a layer of first carrier transporting and second carrier blocking material positioned on the first conductive layer; a layer of organometallic material positioned on the layer of first carrier transporting and second carrier blocking material and having the following general formula: ##STR4## where: M 2 is a divalent metal ion, and R 1 to R 8 represent substitution possibilities at each position and each represent hydrogen or hydrocarbon groups or functional groups; a layer of second carrier transporting and first carrier blocking material positioned on the layer of organometallic material; and a second conductive layer positioned on the layer of second carrier transporting and first carrier blocking materials.
Claim 2
Dependent Claim
118 words
An organic light emitting device comprising: a first conductive layer; a layer of first carrier transporting and second carrier blocking material positioned on the first conductive layer; a layer of organometallic material positioned on the layer of first carrier transporting and second carrier blocking material and having the following general formula: ##STR4## where: M 2 is a divalent metal ion, and R 1 to R 8 represent substitution possibilities at each position and each represent hydrogen or hydrocarbon groups or functional groups; a layer of second carrier transporting and first carrier blocking material positioned on the layer of organometallic material; and a second conductive layer positioned on the layer of second carrier transporting and first carrier blocking materials.
Claim 3
Dependent Claim
22 words
An organic light emitting device as claimed in claim 1 wherein the first carriers are holes and the second carriers are electrons.
Claim 4
Dependent Claim
26 words
An organic light emitting device as claimed in claim 1 wherein the first conductive layer is p conductivity and the second conductive layer is n conductivity.
Claim 5
Dependent Claim
29 words
An organic light emitting device as claimed in claim 1 wherein one of the first and second conductive layers are transparent to light emitted by the organometallic emissive layer.
Claim 6
Dependent Claim
129 words
An organic light emitting device comprising: a glass substrate having a substantially planar surface; a first conductive transparent layer positioned on the glass substrate a layer of hole transporting and electron blocking material positioned on the first conductive layer; a layer of organic active emitter material deposited on the hole transporting and electron blocking layer; a layer of organometallic complex material positioned on the layer of organic active emitter material as electron transporting and hole blocking material, the organometallic complex material having the general formula: ##STR5## where: M 2 is a divalent metal ion, and R 1 to R 8 represent substitution possibilities at each position and each represent hydrogen or hydrocarbon groups or functional groups; and a second conductive layer positioned on the layer of organometallic complex material.
Claim 7
Dependent Claim
129 words
An organic light emitting device comprising: a glass substrate having a substantially planar surface; a first conductive transparent layer positioned on the glass substrate a layer of hole transporting and electron blocking material positioned on the first conductive layer; a layer of organic active emitter material deposited on the hole transporting and electron blocking layer; a layer of organometallic complex material positioned on the layer of organic active emitter material as electron transporting and hole blocking material, the organometallic complex material having the general formula: ##STR5## where: M 2 is a divalent metal ion, and R 1 to R 8 represent substitution possibilities at each position and each represent hydrogen or hydrocarbon groups or functional groups; and a second conductive layer positioned on the layer of organometallic complex material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-22 | 1999-07-24 | 2000-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-22 | 2003-07-24 | 2004-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-22 | 2007-07-24 | 2008-01-23 | $7700.00 | Window Closed / Lapsed |