Patent US6198217B1 successfully refreshed from Google Patents.
US6198217B1
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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
2026-11-03 18:33
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.
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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 |