US5686360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Passivation of organic devices
Assignee: Universal Display Corp
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Filing: 1995-11-30
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Granted: 1997-11-11
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Expires: 2015-11-30
Abstract
Abstract A method of passivating organic devices positioned on a supporting transparent plastic substrate including the steps of overcoating the plastic substrate with a multi-layer overcoating, composed of alternating layers of a transparent polymer film and a transparent dielectric material, forming an organic device on the overcoated transparent plastic substrate and sealing the organic device formed on the overcoated plastic substrate. The polymer film layer used in overcoating the plastic substrate acts as a means of improving the barrier properties of the multi-layer overcoating and the dielectric material acts as a physical barrier to atmospheric elements which can corrode the organic device and are a detriment to the reliability of organic LEDs.
Inventors
- 👤 Thomas B. Harvey, III
- 👤 Song Q. Shi
- 👤 Franky So
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:07
CPC Classifications
H; H10; H10K; H10K77/00; H10K77/10; H10K77/111; H10P; H10P14/00; H10P14/60; H10K50/00; H10K50/80; H10K50/84; H10K50/844; H10K50/8445; H10K59/00; H10K59/80; H10K59/87; H10K59/873; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y02E10/549; Y10; Y10S; Y10S438/00; Y10S438/958
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
70 words
A method of passivating organic devices comprising the steps of: overcoating a transparent plastic supporting substrate, comprised of a plurality of planar surfaces, with alternating layers of at least one transparent polymer film layer and at least one transparent dielectric material layer; providing an organic device on the overcoated transparent plastic supporting substrate defining a plurality of pixels; and sealing the organic device provided on the transparent plastic supporting substrate.
Claim 2
Independent Claim
70 words
A method of passivating organic devices comprising the steps of: overcoating a transparent plastic supporting substrate, comprised of a plurality of planar surfaces, with alternating layers of at least one transparent polymer film layer and at least one transparent dielectric material layer; providing an organic device on the overcoated transparent plastic supporting substrate defining a plurality of pixels; and sealing the organic device provided on the transparent plastic supporting substrate.
Claim 3
Dependent Claim
31 words
A method of passivating organic devices as claimed in claim 1 wherein the at least one polymer film layer is comprised of at least one of fluorinated polymers, parylenes or cyclotenes.
Claim 4
Dependent Claim
23 words
A method of passivating organic devices as claimed in claim 1 wherein the at least one polymer film layer is comprised of TEFLON-AF.
Claim 5
Dependent Claim
36 words
A method of passivating organic devices as claimed in claim 1 wherein the at least one transparent dielectric material layer is comprised of at least one of silicon monoxide, silicon oxide, silicon dioxide or silicon nitride.
Claim 6
Dependent Claim
59 words
A method of passivating organic devices as claimed in claim 1 wherein the step of overcoating the plastic substrate is further comprised of depositing the alternating layers of the at least one polymer film layer and the at least one dielectric material layer on at least one planar surface of the plurality of planar surfaces of the plastic substrate.
Claim 7
Dependent Claim
61 words
A method of passivating organic devices as claimed in claim 1 wherein the step of overcoating the plastic substrate is further comprised of the step of depositing the alternate layers of the at least one polymer film layer and the at least one dielectric material layer on the plurality of planar surfaces of the plastic substrate, thereby encapsulating the plastic substrate.
Claim 8
Dependent Claim
61 words
A method of passivating organic devices as claimed in claim 1 wherein the step of sealing the organic device provided on the plastic substrate is comprised of the steps of overcoating the organic device with a buffer system including a buffer layer of organic material positioned on the organic device and depositing a low permeability inorganic layer over the buffer system.
Claim 9
Dependent Claim
44 words
A method of passivating organic devices as claimed in claim 7 wherein the step of sealing the organic device provided on the plastic substrate includes the step of depositing a thermal coefficient matching layer on buffer layer as a portion of the buffer system.
Claim 10
Dependent Claim
40 words
A method of passivating organic devices as claimed in claim 7 wherein the step of sealing the organic device provided on the plastic substrate further includes the step of capping the plurality of pixels with a layer of stable metal.
Claim 11
Dependent Claim
44 words
A method of passivating organic devices as claimed in claim 7 wherein the step of sealing the organic device provided on the plastic substrate further includes the step of sealing the organic device by depositing a layer of epoxy encapsulant over the buffer system.
Claim 12
Dependent Claim
38 words
A method of passivating organic devices as claimed in claim 7 wherein the step of sealing the organic device provided on the plastic substrate further includes depositing a layer of polymer coated metal foil over the buffer system.
Claim 13
Dependent Claim
44 words
A method of passivating organic devices as claimed in claim 1 wherein the step of sealing the organic device provided on the overcoated plastic substrate further includes depositing alternating layers of at least one polymer and at least one metal over the organic device.
Claim 14
Dependent Claim
45 words
A method of passivating organic devices as claimed in claim 1 wherein the step of sealing the organic device provided on the overcoated plastic substrate further includes forming at least one of a metal can encapsulant or a metallized plastic encapsulant over the organic device.
Claim 15
Independent Claim
107 words
A method of passivating organic devices comprising the steps of: overcoating a transparent plastic substrate, comprised of a plurality of planar surfaces, with alternating layers of a polymer, comprised of at least one of fluorinated polymers, parylenes, or cyclotenes, and a transparent dielectric material, comprised of at least one of silicon monoxide, silicon oxide, silicon dioxide or silicon nitride; providing an array of organic LEDs on the overcoated plastic supporting substrate defining a plurality of pixels; and sealing the organic device provided on the plastic substrate with at least one of a metal can encapsulant, a metallized plastic encapsulant, an epoxy encapsulant or polymer laminated metal foil.
Claim 16
Independent Claim
107 words
A method of passivating organic devices comprising the steps of: overcoating a transparent plastic substrate, comprised of a plurality of planar surfaces, with alternating layers of a polymer, comprised of at least one of fluorinated polymers, parylenes, or cyclotenes, and a transparent dielectric material, comprised of at least one of silicon monoxide, silicon oxide, silicon dioxide or silicon nitride; providing an array of organic LEDs on the overcoated plastic supporting substrate defining a plurality of pixels; and sealing the organic device provided on the plastic substrate with at least one of a metal can encapsulant, a metallized plastic encapsulant, an epoxy encapsulant or polymer laminated metal foil.
Claim 17
Dependent Claim
76 words
A method of passivating organic devices as claimed in claim 14 further including the steps of overcoating the plurality of pixels with a layer of stable metal, overcoating the layer of stable metal with a buffer layer of one of an organic polymer or an organometallic complex, depositing a thermal coefficient matching layer of active metal on the buffer layer, and depositing a low permeability inorganic layer of stable metal over the thermal coefficient matching layer.
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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) | 2000-11-10 | 2001-05-12 | 2001-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-11-10 | 2005-05-12 | 2005-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-11-10 | 2009-05-12 | 2009-11-11 | $7700.00 | Window Closed / Lapsed |