US5349209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diamond/organic LED
Assignee: Universal Display Corp
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Filing: 1992-07-30
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Granted: 1994-09-20
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Expires: 2012-07-30
Abstract
Abstract A light emitting diode including a carrier injection layer of semiconductor material, such as diamond, and a light emitting layer of electroluminescent organic material, such as PPV, positioned to form a diode junction therebetween. The semiconductor material being selected to have a wider bandgap than the organic material and the materials being further selected to minimize the discontinuities at the junction which would cause energy spikes.
Inventors
- 👤 Curtis D. Moyer
- 👤 Thomas B. Harvey, III
- 👤 James E. Jaskie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:29
CPC Classifications
H; H10; H10K; H10K50/00; H10K50/10; H10K50/17; H10K50/171; H10K50/11
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
60 words
A diamond/organic light emitting diode comprising: a layer of polycrystalline diamond; and a layer of electroluminescent organic material positioned on a surface of the layer of polycrystalline diamond and forming a junction therebetween, the layer of polycrystalline diamond serving as a carrier injection layer and the layer of electroluminescent organic material emitting light in response to injection of carriers therein.
Claim 2
Dependent Claim
60 words
A diamond/organic light emitting diode comprising: a layer of polycrystalline diamond; and a layer of electroluminescent organic material positioned on a surface of the layer of polycrystalline diamond and forming a junction therebetween, the layer of polycrystalline diamond serving as a carrier injection layer and the layer of electroluminescent organic material emitting light in response to injection of carriers therein.
Claim 3
Dependent Claim
39 words
A diamond/organic light emitting diode comprising: an electron injection layer including polycrystalline N-type diamond; and a light emitting layer including a P-type electroluminescent organic material positioned on a surface of the electron injection layer and forming a junction therebetween.
Claim 4
Dependent Claim
39 words
A diamond/organic light emitting diode comprising: an electron injection layer including polycrystalline N-type diamond; and a light emitting layer including a P-type electroluminescent organic material positioned on a surface of the electron injection layer and forming a junction therebetween.
Claim 5
Dependent Claim
24 words
A diamond/organic light emitting diode as claimed in claim 2 wherein the P-type electroluminescent organic material of the light emitting layer includes 8-hydroxyquinoline aluminum.
Claim 6
Dependent Claim
25 words
A diamond/organic light emitting diode as claimed in claim 2 wherein the P-type electroluminescent organic material of the light emitting layer includes a conjugated polymer.
Claim 7
Dependent Claim
18 words
A diamond/organic light emitting diode as claimed in claim 4 wherein the conjugated polymer includes poly(2-methoxy, 5-(2'-ethyl-hexoxy)-1, 4-phenylene-vinylene).
Claim 8
Dependent Claim
26 words
A diamond/organic light emitting diode as claimed in claim 2 wherein the light emitting layer is positioned on a (100) surface of the polycrystalline N-type diamond.
Claim 9
Dependent Claim
26 words
A diamond/organic light emitting diode as claimed in claim 2 wherein the light emitting layer is positioned on a (111) surface of the polycrystalline N-type diamond.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-09-19 | 1998-03-21 | 1998-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-19 | 2002-03-21 | 2002-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-19 | 2006-03-21 | 2006-09-20 | $7700.00 | Window Closed / Lapsed |