US6198217B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic electroluminescent device having a protective covering comprising organic and inorganic layers
Assignee: Joled Inc
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Filing: 1998-05-08
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Granted: 2001-03-06
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Expires: 2018-05-08
Abstract
Abstract An organic electroluminescent device comprises an electroluminescent unit having an organic layer structure provided between a pair of electrodes and capable of emitting light on application of a voltage thereto. The electroluminescent unit is covered with a protective double layer made of an organic barrier layer and an inorganic barrier layer formed on the unit in this order.
Inventors
- 👤 Mutsumi Suzuki
- 👤 Masao Fukuyama
- 👤 Yoshikazu Hori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:59
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/02; H05B33/04; H10; H10K; H10K50/00; H10K50/80; H10K50/84; H10K50/844
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
83 words
In an organic electroluminescent device comprising an electroluminescent unit including a pair of electrodes and an organic layer structure provided between the pair of electrodes and capable of emitting light on application of a voltage thereto via the pair of electrodes, and a dual layer protective covering formed on said electrolumescent unit, wherein said dual layer consists of a single organic barrier layer covering and in contact with said electroluminescent unit and a single inorganic barrier layer formed on said organic barrier layer.
Claim 2
Dependent Claim
83 words
In an organic electroluminescent device comprising an electroluminescent unit including a pair of electrodes and an organic layer structure provided between the pair of electrodes and capable of emitting light on application of a voltage thereto via the pair of electrodes, and a dual layer protective covering formed on said electrolumescent unit, wherein said dual layer consists of a single organic barrier layer covering and in contact with said electroluminescent unit and a single inorganic barrier layer formed on said organic barrier layer.
Claim 3
Dependent Claim
20 words
An organic electroluminescent device according to claim 1 , further comprising a substrate on which said electroluminescent unit is formed.
Claim 4
Dependent Claim
20 words
An organic electroluminescent device according to claim 1 , wherein said organic barrier layer is made of a photocured resin.
Claim 5
Dependent Claim
35 words
An organic electroluminescent device according to claim 1 , wherein said organic barrier layer is made of a material having a glass transition point, and is thermally treated at or near the glass transition point.
Claim 6
Dependent Claim
33 words
An organic electroluminescent device according to claim 1 , wherein said organic barrier layer is made of a thermoplastic resin, and is thermally treated at or near a softening temperature of the resin.
Claim 7
Dependent Claim
21 words
An organic electroluminescent device according to claim 1 , wherein said organic barrier layer is formed by a vapor phase technique.
Claim 8
Dependent Claim
22 words
An organic electroluminescent device according to claim 1 , wherein said organic barrier layer has a thickness of 0.5 μm or over.
Claim 9
Dependent Claim
28 words
An organic electroluminescent device according to claim 1 , wherein said inorganic barrier layer is made of a member selected from the group consisting of oxides and nitrides.
Claim 10
Dependent Claim
19 words
An organic electroluminescent device according to claim 1 , wherein said inorganic barrier layer is made of a metal.
Claim 11
Dependent Claim
22 words
An organic electroluminescent device according to claim 1 , wherein said inorganic barrier layer is formed according to a vapor phase technique.
Claim 12
Dependent Claim
21 words
An organic electroluminescent device according to claim 1 , further comprising a low moisture-permeable substrate or film bonded to said device.
Claim 13
Dependent Claim
29 words
An organic electroluminescent device according to claim 11 , wherein said substrate is bonded to said device so that said substrate is not in contact with said electroluminescent unit.
References Cited (Backward Citations)
US5124204A
Cited
US5189405A
Cited
US5036249A
Cited
JPH04212284A
Cited
JPH04267097A
Cited
JPH05182759A
Cited
JPH07192866A
Cited
US5771562A
Cited
US5811177A
Cited
US5952778A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-03-05 | 2004-09-04 | 2005-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-03-05 | 2008-09-04 | 2009-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-03-05 | 2012-09-04 | 2013-03-06 | $7700.00 | Window Closed / Lapsed |