US5677545A
Expired / Lapsed
US
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Organic light emitting diodes with molecular alignment and method of fabrication
Assignee: Universal Display Corp
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Filing: 1994-09-12
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Granted: 1997-10-14
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Expires: 2014-09-12
Abstract
Abstract An organic LED including a conductive layer with a planar surface and a layer of semiconductive polymer molecules having anchoring groups at each end, uniformly oriented perpendicularly on the planar surface, by deposition and self-assembly technique. A coupling layer positioned on the organic layer and a second organic layer uniformly oriented on the coupling layer, by deposition and self-assembly technique, parallel to the first semiconductive polymer molecules. Additional coupling layers and organic layers are alternately positioned on the second organic layer and on each other to form an LED of desired dimensions and a second conductive layer is deposited on the final layer.
Inventors
- 👤 Song Q. Shi
- 👤 Franky So
- 👤 Thomas B. Harvey, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:25
CPC Classifications
B; B82; B82Y; B82Y10/00; B82Y30/00; H; H10; H10K; H10K50/00; H10K50/10; H10K50/11; H10K85/00; H10K85/10; H10K85/111; H10K85/114; Y; Y10; Y10S; Y10S428/00; Y10S428/917
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
134 words
An organic light emitting diode comprising: a first conductive layer of electrically conducting material having a planar surface; a first organic layer of semiconductive polymer molecules each having anchoring groups at each end positioned on the planar surface of the first conductive layer by deposition and a self-assembly technique to substantially uniformly orient the semiconductive polymer molecules perpendicular to the planar surface; a first coupling layer positioned on the first organic layer; a second organic layer of semiconductive polymer molecules having anchoring groups at each end positioned on the first coupling layer by deposition and self-assembly technique to substantially uniformly orient the semiconductive polymer molecules parallel to the semiconductive polymer molecules of the first organic layer; and a second conductive layer of electrically conducting material positioned in electrical contact with the second organic layer.
Claim 2
Dependent Claim
134 words
An organic light emitting diode comprising: a first conductive layer of electrically conducting material having a planar surface; a first organic layer of semiconductive polymer molecules each having anchoring groups at each end positioned on the planar surface of the first conductive layer by deposition and a self-assembly technique to substantially uniformly orient the semiconductive polymer molecules perpendicular to the planar surface; a first coupling layer positioned on the first organic layer; a second organic layer of semiconductive polymer molecules having anchoring groups at each end positioned on the first coupling layer by deposition and self-assembly technique to substantially uniformly orient the semiconductive polymer molecules parallel to the semiconductive polymer molecules of the first organic layer; and a second conductive layer of electrically conducting material positioned in electrical contact with the second organic layer.
Claim 3
Dependent Claim
24 words
An organic light emitting diode as claimed in claim 1 wherein the first and second layers of semiconductive polymer molecules each include unsaturated polymers.
Claim 4
Dependent Claim
24 words
An organic light emitting diode as claimed in claim 1 wherein the first and second layers of semiconductive polymer molecules each include conjugated polymers.
Claim 5
Dependent Claim
19 words
An organic light emitting diode as claimed in claim 1 wherein the first coupling layer includes multi-valent ion material.
Claim 6
Dependent Claim
17 words
An organic light emitting diode as claimed in claim 1 wherein the first coupling layer includes nanocrystals.
Claim 7
Dependent Claim
18 words
An organic light emitting diode as claimed in claim 5 wherein the first coupling layer includes CdS nanocrystals.
Claim 8
Dependent Claim
24 words
An organic light emitting diode as claimed in claim 1 wherein one of the first and second conductive layers includes a light transparent material.
Claim 9
Dependent Claim
17 words
An organic light emitting diode as claimed in claim 7 wherein the light transparent material is ITO.
Claim 10
Dependent Claim
39 words
An organic light emitting diode as claimed in claim 1 wherein the coupling layer forms a bridge between the anchoring groups at one end of the semiconductive polymer molecules of organic layers on each side of the coupling layer.
Claim 11
Dependent Claim
30 words
An organic light emitting diode as claimed in claim 1 wherein the first and second organic layers of semiconductive polymer molecules include a plurality of monolayers of semiconductive polymer molecules.
Claim 12
Dependent Claim
149 words
An organic light emitting diode comprising: a first conductive layer of electrically conducting material having a planar surface; a first organic layer of semiconductive polymer molecules having anchoring groups at each end positioned on the planar surface of the first conductive layer by deposition and self-assembly technique to substantially uniformly orient the semiconductive polymer molecules perpendicular to the planar surface; a first coupling layer positioned on the first organic layer; a second organic layer of semiconductive polymer molecules having anchoring groups at each end positioned on the first coupling layer by deposition and self-assembly technique to substantially uniformly orient the semiconductive polymer molecules parallel to the semiconductive polymer molecules of the first organic layer; additional coupling layers and organic layers alternately positioned on the second organic layer and on each other with a final layer; and a second conductive layer of electrically conducting material positioned on the final layer.
Claim 13
Dependent Claim
149 words
An organic light emitting diode comprising: a first conductive layer of electrically conducting material having a planar surface; a first organic layer of semiconductive polymer molecules having anchoring groups at each end positioned on the planar surface of the first conductive layer by deposition and self-assembly technique to substantially uniformly orient the semiconductive polymer molecules perpendicular to the planar surface; a first coupling layer positioned on the first organic layer; a second organic layer of semiconductive polymer molecules having anchoring groups at each end positioned on the first coupling layer by deposition and self-assembly technique to substantially uniformly orient the semiconductive polymer molecules parallel to the semiconductive polymer molecules of the first organic layer; additional coupling layers and organic layers alternately positioned on the second organic layer and on each other with a final layer; and a second conductive layer of electrically conducting material positioned on the final layer.
Claim 14
Dependent Claim
24 words
An organic light emitting diode as claimed in claim 11 wherein the first and second layers of semiconductive polymer molecules each include unsaturated polymers.
Claim 15
Dependent Claim
24 words
An organic light emitting diode as claimed in claim 11 wherein the first and second layers of semiconductive polymer molecules each include conjugated polymers.
Claim 16
Dependent Claim
22 words
An organic light emitting diode as claimed in claim 11 wherein the first coupling layer includes multi-valent ion material and CdS nanocrystals.
Claim 17
Dependent Claim
24 words
An organic light emitting diode as claimed in claim 11 wherein one of the first and second conductive layers includes a light transparent material.
Claim 18
Dependent Claim
17 words
An organic light emitting diode as claimed in claim 15 wherein the light transparent material is ITO.
Claim 19
Dependent Claim
39 words
An organic light emitting diode as claimed in claim 11 wherein the coupling layer forms a bridge between the anchoring groups at one end of the semiconductive polymer molecules of organic layers on each side of the coupling layer.
Claim 20
Dependent Claim
31 words
An organic light emitting diode as claimed in claim 11 wherein the first, second and additional organic layers of semiconductive polymer molecules include a plurality of monolayers of semiconductive polymer molecules.
Claim 21
Dependent Claim
28 words
An organic light emitting diode as claimed in claim 11 wherein at least one of the first, second and additional organic layers include a fluorescent semiconductive polymer material.
Claim 22
Dependent Claim
26 words
An organic light emitting diode as claimed in claim 11 wherein at least one of the first and additional coupling layers include a fluorescent nanocrystal material.
References Cited (Backward Citations)
US4775820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-10-13 | 2001-04-14 | 2001-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-10-13 | 2005-04-14 | 2005-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-10-13 | 2009-04-14 | 2009-10-14 | $7700.00 | Window Closed / Lapsed |