US4855190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent lighting elements
Assignee: COMLITE HOLDINGS Ltd
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Filing: 1987-12-02
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Granted: 1989-08-08
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Expires: 2007-12-02
Abstract
Abstract A continuous, foil-like electroluminescent lighting element having a plurality of separate units, each unit constituted of one or more discrete pieces of a phosphor, and being fully encapsulated in a cell consisting of a dielectric, which cell is at least partly embedded in a sealing substance. The element also comprises two electrodes, of which at least one is at least partly light-transmissive and between which electrodes are disposed the dielectric cells containing the encapsulated phosphor units, and the sealing substance. Each of the phosphor-containing cells is thereby substantially isolated from adjacent cells.
Inventors
- 👤 Baruch Bezner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:51
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/10; H05B33/12; H05B33/14; H05B33/145; H05B33/02; H05B33/04; H05B33/20; H05B33/22; H05B33/26; H05B33/28; H10; H10P; H10P14/00; H10P14/60; H10P14/63; H10P14/6302; H10P14/6304; H10P14/6306; H10P95/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
104 words
A continuous, foil-like electroluminescent lighting element comprising: a plurality of separate units, each constituted of one or more discrete pieces of a phosphor, each unit being fully encapsulated in a cell consisting of a dielectric, which cell is at least partly embedded in a sealing substance, and two electrodes of which at least one is at least partly light-transmissive, between which electrodes are disposed said dielectric cells containing said encapsulated phosphor units, and said sealing substance, wherein each of said phosphor-containing cells is substantially isolated from adjacent cells by a separating means whereby moisture is prevented from propagating beyond any damaged cell or cells.
Claim 2
Dependent Claim
104 words
A continuous, foil-like electroluminescent lighting element comprising: a plurality of separate units, each constituted of one or more discrete pieces of a phosphor, each unit being fully encapsulated in a cell consisting of a dielectric, which cell is at least partly embedded in a sealing substance, and two electrodes of which at least one is at least partly light-transmissive, between which electrodes are disposed said dielectric cells containing said encapsulated phosphor units, and said sealing substance, wherein each of said phosphor-containing cells is substantially isolated from adjacent cells by a separating means whereby moisture is prevented from propagating beyond any damaged cell or cells.
Claim 3
Dependent Claim
19 words
The lighting element as claimed in claim 1, further comprising an outer, light-transmissive polymer coating for said light-transmissive electrode.
Claim 4
Dependent Claim
19 words
The lighting elements as claimed in claim 1, wherein said sealing substance is a polymer of low water-vapor permeability.
Claim 5
Dependent Claim
23 words
The lighting elements as claimed in claim 1, wherein said discrete piece of a phosphor is in the form of a depositable film.
Claim 6
Dependent Claim
25 words
The lighting element as claimed in claim 1, wherein said discrete piece of a phosphor is in the form of at least one phosphor grain.
Claim 7
Dependent Claim
32 words
The lighting element as claimed in claim 1, further comprising a metal grid accessible from the outside of said element for electrical connection and disposed in electric contact with said light-transmissive electrode.
Claim 8
Dependent Claim
21 words
The lighting elements as claimed in claim 1, wherein said cells are laterally confined in the interstices of a grid-like structure.
Claim 9
Dependent Claim
16 words
The lighting element as claimed in claim 1, wherein said transparent electrode consists of indium-tin oxides.
Claim 10
Dependent Claim
18 words
The lighting element as claimed in claim 1, wherein said light-transmissive electrode consists of an electrically conductive polymer.
Claim 11
Dependent Claim
24 words
The lighting element as claimed in claim 1, further comprising a desiccant layer interposed between said cells and said at least partly light-transmissive electrode.
Claim 12
Dependent Claim
35 words
The lighting elements as claimed in claim 1, further comprising a primer layer interposed between the non-light-transmissive one of said electrodes and having a high dielectric constant as well as high reflectance of visible light.
Claim 13
Dependent Claim
25 words
The lighting element as claimed in claim 1, furthermore comprising an outermost layer consisting of a polymer transparent to visible light, but opaque to UV-radiation.
References Cited (Backward Citations)
US4661373A
Cited
US4708914A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-07 | 1993-02-06 | 1993-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-07 | 1997-02-06 | 1997-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-07 | 2001-02-06 | 2001-08-08 | $7700.00 | Window Closed / Lapsed |