US5771562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Passivation of organic devices
Assignee: Universal Display Corp
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Filing: 1995-05-02
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Granted: 1998-06-30
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Expires: 2015-05-02
Abstract
Abstract A method of passivating organic devices positioned on a supporting substrate including the steps of overcoating the organic device with a low temperature deposited film of dielectric material, and sealingly engaging an inorganic layer over the dielectric material so as to substantially hermetically seal the organic device. In a typical embodiment, the dielectric layer is SiO 2 and the inorganic layer is a metal can.
Inventors
- 👤 Thomas B. Harvey, III
- 👤 Franky So
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:19
CPC Classifications
H; H10; H10K; H10K59/00; H10K59/80; H10K59/87; H10K59/873; H10K50/00; H10K50/80; H10K50/84; H10K50/842; H10K50/8423; H10K50/844; H10K71/00; H10K77/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
65 words
A method of hermetically sealing organic light emitting devices comprising the steps of: providing an organic light emitting device on a supporting substrate; overcoating the organic light emitting device with a film of inorganic dielectric material deposited at a temperature less than approximately 300° C. sealingly engaging an inorganic layer over the dielectric material so as to substantially hermetically seal the organic light emitting device.
Claim 2
Independent Claim
65 words
A method of hermetically sealing organic light emitting devices comprising the steps of: providing an organic light emitting device on a supporting substrate; overcoating the organic light emitting device with a film of inorganic dielectric material deposited at a temperature less than approximately 300° C. sealingly engaging an inorganic layer over the dielectric material so as to substantially hermetically seal the organic light emitting device.
Claim 3
Dependent Claim
49 words
A method of hermetically sealing organic light emitting devices as claimed in claim 1 wherein the step of overcoating the organic light emitting device with the dielectric material includes evaporating the dielectric material in a low pressure oxygen atmosphere to produce the film on the organic light emitting device.
Claim 4
Dependent Claim
45 words
A method of hermetically sealing organic light emitting devices as claimed in claim 2 wherein the step of evaporating the dielectric material includes evaporating silicon monoxide in a low pressure oxygen atmosphere to produce a film of silicon dioxide on the organic light emitting device.
Claim 5
Dependent Claim
48 words
A method of hermetically sealing organic light emitting devices as claimed in claim 3 wherein the step of evaporating silicon oxide in a low pressure oxygen atmosphere to produce a film of silicon dioxide indudes evaporating the silicon oxide in an oxygen atmosphere at approximately 10 -4 Torr.
Claim 6
Dependent Claim
58 words
A method of hermetically sealing organic light emitting devices as claimed in claim 1 wherein the step of sealingly engaging the inorganic layer over the dielectric material includes the steps of providing a metal can and sealingly engaging the metal can over the film of dielectric material so as to substantially hermetically seal the organic light emitting device.
Claim 7
Dependent Claim
55 words
A method of hermetically sealing organic light emitting devices as claimed in claim 5 wherein the step of sealingly engaging the metal can over the film of dielectric material includes affixing the metal can over the film of dielectric material while retaining the organic light emitting device in an atmosphere at approximately 10 -4 Torr.
Claim 8
Dependent Claim
30 words
A method of hermetically sealing organic light emitting devices as claimed in claim 5 wherein the step of sealingly engaging the metal can includes utilizing a low temperature solder seal.
Claim 9
Dependent Claim
34 words
A method of hermetically sealing organic light emitting devices as claimed in claim 7 wherein the step of sealingly engaging the metal can utilizing the low temperature solder seal includes utilizing indium based solder.
Claim 10
Dependent Claim
53 words
A method of hermetically sealing organic light emitting devices as claimed in claim 5 including in addition a step of depositing a layer of a gettering material prior to sealingly engaging the metal can over the film of dielectric material, so as to position the layer of gettering material inside the metal can.
Claim 11
Dependent Claim
34 words
A method of hermetically sealing organic light emitting devices as claimed in claim 9 wherein the step of sealingly engaging the metal can over the film of dielectric material includes utilizing an organic adhesive.
Claim 12
Dependent Claim
37 words
A method of hermetically sealing organic light emitting devices as claimed in claim 9 wherein the step of depositing the gettering material includes depositing a layer of low work function metal including one of lithium and magnesium.
Claim 13
Independent Claim
67 words
A method of hermetically sealing organic light emitting devices comprising the steps of: providing an organic light emitting device on a supporting substrate; overcoating the organic light emitting device with an inorganic dielectric material deposited at a temperature less than approximately 300° C.; providing a metal can; and sealing the metal can over the dielectric coating so as to substantially hermetically seal the organic light emitting device.
Claim 14
Independent Claim
67 words
A method of hermetically sealing organic light emitting devices comprising the steps of: providing an organic light emitting device on a supporting substrate; overcoating the organic light emitting device with an inorganic dielectric material deposited at a temperature less than approximately 300° C.; providing a metal can; and sealing the metal can over the dielectric coating so as to substantially hermetically seal the organic light emitting device.
Claim 15
Dependent Claim
49 words
A method of hermetically sealing organic light emitting devices as claimed in claim 12 wherein the step of overcoating the organic light emitting device with the dielectric material includes evaporating the dielectric material in a low pressure oxygen atmosphere to produce the film on the organic light emitting device.
Claim 16
Dependent Claim
45 words
A method of hermetically sealing organic light emitting devices as claimed in claim 13 wherein the step of evaporating the dielectric material includes evaporating silicon oxide in a low pressure oxygen atmosphere to produce a film of silicon dioxide on the organic light emitting device.
Claim 17
Independent Claim
48 words
A method of hermetically sealing organic light emitting devices as claimed in claims 14 wherein the step of evaporating silicon oxide in a low pressure oxygen atmosphere to produce a film of silicon dioxide includes evaporating the silicon oxide in an oxygen atmosphere at approximately 10 -4 Torr.
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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) | 2001-06-29 | 2001-12-29 | 2002-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-29 | 2005-12-29 | 2006-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-29 | 2009-12-29 | 2010-06-30 | $7700.00 | Window Closed / Lapsed |