JPS55145788A - Luminescent composition - Google Patents
Luminescent compositionInfo
- Publication number
- JPS55145788A JPS55145788A JP5347479A JP5347479A JPS55145788A JP S55145788 A JPS55145788 A JP S55145788A JP 5347479 A JP5347479 A JP 5347479A JP 5347479 A JP5347479 A JP 5347479A JP S55145788 A JPS55145788 A JP S55145788A
- Authority
- JP
- Japan
- Prior art keywords
- fluorescent substance
- europium
- indium sulfide
- precipitate
- particle
- 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.)
- Pending
Links
Landscapes
- Luminescent Compositions (AREA)
Abstract
PURPOSE: To provide fluorescent compsn. which luminesces in red with high luminance by the excitation of low-speed electron beams, by a method wherein a specified amount of indium sulfide particle is deposited on the surface of a fluorescent substance composed of yttrium oxysulfide activated with europium.
CONSTITUTION: A fluorescent substance composed of yttrium oxysulfide activated with europium is suspended in an aq. soln. contg. indium sulfide in such a proportion as to give a weight ratio of the indium sulfide to the fluorescent substance in the resulting product of 9:1W1:9. The pH of the suspension is adjusted to 1.5W3.0. Gaseous H2S is passed through the suspension with stirring to precipitate substantially all of indium on the fluorescent substance particle. Excess chloride is removed from the precipitate by washing and drying steps. The precipitate is clcined in a sulfururous atmosphere at 500°C for 1hr to deposit indium sulfide particle on the surface of the fluorescent substance composed of yttrium oxysulfide activated with europium.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5347479A JPS55145788A (en) | 1979-05-02 | 1979-05-02 | Luminescent composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5347479A JPS55145788A (en) | 1979-05-02 | 1979-05-02 | Luminescent composition |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55145788A true JPS55145788A (en) | 1980-11-13 |
Family
ID=12943844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5347479A Pending JPS55145788A (en) | 1979-05-02 | 1979-05-02 | Luminescent composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55145788A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59105254A (en) * | 1982-12-08 | 1984-06-18 | Futaba Corp | Low velocity electron ray phosphor and fluorescent character display tube |
KR20020082383A (en) * | 2001-04-19 | 2002-10-31 | 티디케이가부시기가이샤 | Fluorescent Thin Film, Preparation Method and EL Panel |
-
1979
- 1979-05-02 JP JP5347479A patent/JPS55145788A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59105254A (en) * | 1982-12-08 | 1984-06-18 | Futaba Corp | Low velocity electron ray phosphor and fluorescent character display tube |
JPS6145347B2 (en) * | 1982-12-08 | 1986-10-07 | Futaba Denshi Kogyo Kk | |
KR20020082383A (en) * | 2001-04-19 | 2002-10-31 | 티디케이가부시기가이샤 | Fluorescent Thin Film, Preparation Method and EL Panel |
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