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US5166456A
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Luminescent phosphor composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1986-12-10
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Granted: 1992-11-24
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Expires: 2006-12-10
Abstract
Abstract PCT No. PCT/JP86/00626 Sec. 371 Date Jul. 13, 1987 Sec. 102(e) Date Jul. 13, 1987 PCT Filed Dec. 10, 1986 PCT Pub. No. WO87/03611 PCT Pub. Date Jun. 18, 1987.A luminescent phosphor composition composed essentially of particles formed by fusion of a phosphor and a sulfate of alkaline earth metal.
Inventors
- 👤 Masahiko Yoshino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:14
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/38; H01J61/42; H01J61/44; C; C09; C09K; C09K11/00; C09K11/02; C09K11/025; C09K11/08; C09K11/66; C09K11/668; C09K11/77; C09K11/7728; C09K11/7741; C09K11/7783; C09K11/7784; C09K11/7787
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
85 words
A luminescent phosphor composition consisting essentially of particles formed by fusion of a rare earth oxide phosphor, and a sulfate of an alkaline earth metal, wherein the total content of the alkaline earth metal is within a range of from 5-95% by weight, said rare earth oxide phosphor further containing an amount of Eu effective as a phosphor activator, said phosphor having the formula: Ln.sub.2 O.sub.3 :Eu wherein Ln is at least one element selected from the group consisting of Y, Gd, La and Lu.
Claim 2
Dependent Claim
85 words
A luminescent phosphor composition consisting essentially of particles formed by fusion of a rare earth oxide phosphor, and a sulfate of an alkaline earth metal, wherein the total content of the alkaline earth metal is within a range of from 5-95% by weight, said rare earth oxide phosphor further containing an amount of Eu effective as a phosphor activator, said phosphor having the formula: Ln.sub.2 O.sub.3 :Eu wherein Ln is at least one element selected from the group consisting of Y, Gd, La and Lu.
Claim 3
Dependent Claim
25 words
The luminescent phosphor composition according to claim 1, wherein the content of the sulfate is within a range of from 10 to 95% by weight.
Claim 4
Dependent Claim
22 words
The luminescent phosphor composition according to claim 1, wherein the alkaline earth metal is at least one of barium, strontium and calcium.
Claim 5
Dependent Claim
21 words
The luminescent phosphor composition according to claim 3, wherein the alkaline earth metal is at least one of barium and strontium.
References Cited (Backward Citations)
US4705952A
Cited
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