US6150187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Encapsulation method of a polymer or organic light emitting device
Assignee: Uniloc 2017 LLC
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Filing: 1998-07-27
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Granted: 2000-11-21
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Expires: 2018-07-27
Abstract
Abstract The present invention relates to the encapsulation for extending the lifetime of a flexible organic or polymer light emitting device and, more particularly, to encapsulation by sealing with multiple polymer films to prevent the penetration of oxygen and moisture into an organic or polymer light emitting device. Due to the encapsulation of polymer light emitting device with the multiple polymer films, exposure to moisture and oxygen are prevented, which are causes of device degradation. When using a plastic substrate whose the thermal endurance is high, simultaneously, it has a thermal endurance effect to the Joule heat during device operation. Accordingly, there can be fabricated an organic or polymer light emitting display whose lifetime is extended through the encapsulation of an organic of polymer light emitting device with multiple polymer films.
Inventors
- 👤 Tae Hyoung Zyung
- 👤 Do Hoon Hwang
- 👤 Sang Don Jung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:46
CPC Classifications
H; H10; H10K; H10K50/00; H10K50/80; H10K50/84; H10K50/844; H05; H05B; H05B33/00; H05B33/02; H05B33/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
64 words
An encapsulation method of a polymer or organic light emitting device, said method comprising the steps of: forming an organic or polymer light emitting device having a metal layer serving as a metallic electrode, on a transparent substrate; and wrapping said device with multiple polymer films without contacting said metal layer to protect said organic or polymer light emitting device from oxygen and moisture.
Claim 2
Dependent Claim
64 words
An encapsulation method of a polymer or organic light emitting device, said method comprising the steps of: forming an organic or polymer light emitting device having a metal layer serving as a metallic electrode, on a transparent substrate; and wrapping said device with multiple polymer films without contacting said metal layer to protect said organic or polymer light emitting device from oxygen and moisture.
Claim 3
Dependent Claim
42 words
The encapsulation method of a polymer or organic light emitting device according to claim 1, wherein said multiple polymer films are formed by integrating a simultaneous oxygen and moisture preventing film, an oxygen preventing film and a moisture preventing film in series.
Claim 4
Dependent Claim
25 words
The encapsulation method of polymer or organic light emitting device according to claim 1, wherein said transparent substrate includes a polymer of polyethyl naphthalate derivatives.
Claim 5
Dependent Claim
27 words
The encapsulation method of a polymer or organic light emitting device according to claim 1, wherein said transparent substrate includes a thin rubber film of polyurethane derivatives.
Claim 6
Dependent Claim
30 words
The encapsulation method of a polymer or organic light emitting device according to claim 2, wherein said simultaneous oxygen and moisture preventing film includes a polymer of polyethyl naphthalate derivatives.
Claim 7
Dependent Claim
54 words
The encapsulation method of a polymer or organic light emitting device according to claim 2, wherein said oxygen preventing film includes one of the polymer thin films which include polyvinyl alcohol derivatives, polyvinyl acetate derivatives, polyvinyl alcohol acetate derivatives and is formed by a spin coating, doctor-blading or by attaching film with an adhesive.
Claim 8
Dependent Claim
41 words
The encapsulation method of polymer or organic light emitting device according to claim 2, wherein said moisture preventing film includes a polymer thin film of polyethylene derivatives and is formed by spin coating, doctor-blading, or by attaching film with an adhesive.
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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) | 2003-11-21 | 2004-05-22 | 2004-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-11-21 | 2008-05-22 | 2008-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-11-21 | 2012-05-22 | 2012-11-21 | $7700.00 | Window Closed / Lapsed |