JPS57133180A - Red light-emitting substance - Google Patents
Red light-emitting substanceInfo
- Publication number
- JPS57133180A JPS57133180A JP1965081A JP1965081A JPS57133180A JP S57133180 A JPS57133180 A JP S57133180A JP 1965081 A JP1965081 A JP 1965081A JP 1965081 A JP1965081 A JP 1965081A JP S57133180 A JPS57133180 A JP S57133180A
- Authority
- JP
- Japan
- Prior art keywords
- substance
- red light
- specific
- europium
- particle size
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Luminescent Compositions (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
PURPOSE: A red light-emitting substance that is made by mixing a rare earth oxysulfide activated with europium having a specific particle size distribution, which is shown as a specific formula, with an electrically conductive substance at a specific ratio, thus showing increasd luminance by being excited with low speed electron rays.
CONSTITUTION: A red light-emitting fluorescent substance, one of rare earth oxysulfide activated with europium of the formula: Lu2O2S:Eu (Lu is Y, Gd, La), with a particle size distribution of 0.1W2μ median and less than 0.7 standard deviation and an electrically conductive substance such as a conductive metal oxide, e.g., In2O3 are mixed at a weight ratio of 19/1W1/1 to give the objective substance.
EFFECT: The resultant composition emits red light of high luminance by the excitation with low speed electron rays of less than 50 acceleration voltage. It does not contain cadmium, a harmful substance.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1965081A JPS5943076B2 (en) | 1981-02-13 | 1981-02-13 | red luminescent material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1965081A JPS5943076B2 (en) | 1981-02-13 | 1981-02-13 | red luminescent material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57133180A true JPS57133180A (en) | 1982-08-17 |
JPS5943076B2 JPS5943076B2 (en) | 1984-10-19 |
Family
ID=12005111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1965081A Expired JPS5943076B2 (en) | 1981-02-13 | 1981-02-13 | red luminescent material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5943076B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001077254A1 (en) * | 2000-04-11 | 2001-10-18 | Kabushiki Kaisha Toshiba | Phosphor for display and field-emission display |
-
1981
- 1981-02-13 JP JP1965081A patent/JPS5943076B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001077254A1 (en) * | 2000-04-11 | 2001-10-18 | Kabushiki Kaisha Toshiba | Phosphor for display and field-emission display |
US6882099B2 (en) | 2000-04-11 | 2005-04-19 | Kabushiki Kaisha Toshiba | Phosphor for display and field-emission display |
Also Published As
Publication number | Publication date |
---|---|
JPS5943076B2 (en) | 1984-10-19 |
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