US5531928A
Expired / Lapsed
US
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Phosphor and method of making same
Assignee: Osram Sylvania Inc
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Filing: 1995-05-09
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Granted: 1996-07-02
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Expires: 2015-05-09
Abstract
Abstract Electroluminescent phosphors having substantially increased luminance and maintenance over that of prior art electroluminescent phosphors may be made by (1) doping an inorganic intercalation compound having an atomic structure interspersed with vacant spaces, with selected activator ions capable of luminescent emission, and (2) introducing organic monomers or other conductive material into the vacant spaces of the atomic structure of the doped inorganic intercalation compound. The organic monomers may be polymerized in situ to form conductive polymers therein.
Inventors
- 👤 Ronald E. Karam
- 👤 Vaddi B. Reddy
- 👤 Shellie K. Northrop
- 👤 Yan Zhang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:14
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/67; C09K11/671; C09K11/02; C09K11/025; C09K11/0805; C09K11/59; C09K11/592; C09K11/61; C09K11/611; C09K11/64; C09K11/646; C09K11/77; C09K11/7728; C09K11/77344; H; H05; H05B; H05B33/00; H05B33/12; H05B33/14
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
27 words
A phosphor comprising a fluorophlogopite having the general formula KMg 3 (Si 3 Al)O 10 F 2 activated with an activator selected from niobium, thulium and zirconium.
Claim 2
Dependent Claim
27 words
A phosphor comprising a fluorophlogopite having the general formula KMg 3 (Si 3 Al)O 10 F 2 activated with an activator selected from niobium, thulium and zirconium.
Claim 3
Dependent Claim
10 words
The phosphor of claim 1 wherein the activator is niobium.
Claim 4
Dependent Claim
24 words
The phosphor of claim 2 wherein the niobium is present in an amount from about 0.01 to about 0.05 moles per mole of phosphor.
Claim 5
Dependent Claim
18 words
The phosphor of claim 8 wherein the amount of niobium is about 0.05 moles per mole of phosphor.
Claim 6
Dependent Claim
42 words
The phosphor of claim 2 wherein 2.5 Mg +2 ions are removed for each Nb +5 ion to yield a general formula KMg 3-2 .5x Nb x (Si 3 Al)O 10 F 2 wherein x is from about 0.005 to about 0.20.
Claim 7
Dependent Claim
10 words
The phosphor of claim 5 wherein x is about 0.10.
Claim 8
Dependent Claim
50 words
The phosphor of claim 2 wherein 3 Li +1 ions are added and 4 Mg +2 ions are removed for each Nb +5 ion to yield the general formula KMg 3-4x Nb x Li 3x (Si 3 Al)O 10 F 2 wherein x is from about 0.005 to about 0.20.
Claim 9
Dependent Claim
10 words
The phosphor of claim 7 wherein x is about 0.04.
Claim 10
Dependent Claim
10 words
The phosphor of claim 1 wherein the activator is zirconium.
Claim 11
Dependent Claim
24 words
The phosphor of claim 9 wherein the zirconium is present in an amount from about 0.01 to about 0.15 moles per mole of phosphor.
Claim 12
Dependent Claim
18 words
The phosphor of claim 10 wherein the amount of zirconium is about 0.15 moles per mole of phosphor.
Claim 13
Dependent Claim
10 words
The phosphor of claim 1 wherein the activator is thulium.
Claim 14
Dependent Claim
24 words
The phosphor of claim 12 wherein the thulium is present in an amount from about 0.005 to about 0.20 moles per mole of phosphor.
Claim 15
Dependent Claim
18 words
The phosphor of claim 13 wherein the amount of thulium is about 0.005 moles per mole of phosphor.
Claim 16
Dependent Claim
23 words
A phosphor comprising a sodium fluorophlogopite having the general formula NaMg 3 (Si 3 Al)O 10 F 2 activated with europium or niobium.
Claim 17
Dependent Claim
23 words
A phosphor comprising a sodium fluorophlogopite having the general formula NaMg 3 (Si 3 Al)O 10 F 2 activated with europium or niobium.
Claim 18
Dependent Claim
45 words
The phosphor of claim 15 wherein the activator is niobium and 2.5 Mg +2 ions are removed for each Nb +5 ion to yield a general formula NaMg 3-2 .5x (Si 3 Al)O 10 F 2 :Nb x wherein x is from 0.01 to 0.08.
Claim 19
Dependent Claim
19 words
A phosphor comprising a layered perovskite having the general formula KLaNb 2 O 7 activated with europium or samarium.
Claim 20
Dependent Claim
19 words
A phosphor comprising a layered perovskite having the general formula KLaNb 2 O 7 activated with europium or samarium.
Claim 21
Dependent Claim
19 words
A phosphor comprising a layered perovskite having the general formula KCa 2 Nb 3 O 10 activated with europium.
Claim 22
Dependent Claim
19 words
A phosphor comprising a layered perovskite having the general formula KCa 2 Nb 3 O 10 activated with europium.
Claim 23
Dependent Claim
30 words
A phosphor comprising a layered perovskite having the general formula K 2 La 2-x Gd x Ti 3 O 10 activated with europium wherein x is from 0 to 0.12.
Claim 24
Dependent Claim
30 words
A phosphor comprising a layered perovskite having the general formula K 2 La 2-x Gd x Ti 3 O 10 activated with europium wherein x is from 0 to 0.12.
Claim 25
Dependent Claim
10 words
The phosphor of claim 17 wherein the activator is europium.
Claim 26
Dependent Claim
22 words
The phosphor of claim 20 wherein the europium is present in an amount from 0.005 to 0.04 moles per mole of phosphor.
Claim 27
Dependent Claim
17 words
The phosphor of claim 21 wherein the amount of europium is 0.01 moles per mole of phosphor.
Claim 28
Dependent Claim
10 words
The phosphor of claim 17 wherein the activator is samarium.
Claim 29
Dependent Claim
22 words
The phosphor of claim 23 wherein the samarium is present in an amount from 0.005 to 0.06 moles per mole of phosphor.
Claim 30
Dependent Claim
17 words
The phosphor of claim 24 wherein the amount of samarium is 0.03 moles per mole of phosphor.
Claim 31
Dependent Claim
22 words
The phosphor of claim 18 wherein the europium is present in an amount from 0.005 to 0.04 moles per mole of phosphor.
Claim 32
Dependent Claim
17 words
The phosphor of claim 26 wherein the amount of europium is 0.005 moles per mole of phosphor.
Claim 33
Dependent Claim
22 words
The phosphor of claim 29 wherein the europium is present in an amount from 0.005 to 0.05 moles per mole of phosphor.
Claim 34
Dependent Claim
21 words
The phosphor of claim 28 wherein x is 0 and the amount of europium is 0.02 moles per mole of phosphor.
Claim 35
Dependent Claim
21 words
The phosphor of claim 28 wherein x is 0.012 and the amount of europium is 0.04 moles per mole of phosphor.
Claim 36
Dependent Claim
17 words
The phosphor of claim 16 wherein the amount of niobium is 0.08 moles per mole of phosphor.
Claim 37
Dependent Claim
12 words
The phosphor of claim 15 wherein the phosphor is activated is europium.
Claim 38
Dependent Claim
21 words
The phosphor of claim 32 wherein the europium is present in amount from 0.02 to 0.10 moles per mole of phosphor.
Claim 39
Dependent Claim
21 words
The phosphor of claim 33 wherein the europium is present in amount from 0.04 to 0.05 moles per mole of phosphor.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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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) | 1999-07-02 | 2000-01-01 | 2000-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-07-02 | 2004-01-01 | 2004-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-07-02 | 2008-01-01 | 2008-07-02 | $7700.00 | Window Closed / Lapsed |