JPS55133478A - Luminescent composition and fluorescent display tube excited with low-speed electron beam - Google Patents
Luminescent composition and fluorescent display tube excited with low-speed electron beamInfo
- Publication number
- JPS55133478A JPS55133478A JP4021279A JP4021279A JPS55133478A JP S55133478 A JPS55133478 A JP S55133478A JP 4021279 A JP4021279 A JP 4021279A JP 4021279 A JP4021279 A JP 4021279A JP S55133478 A JPS55133478 A JP S55133478A
- Authority
- JP
- Japan
- Prior art keywords
- zinc
- low
- zinc oxide
- composition
- speed electron
- 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)
Abstract
PURPOSE: An emission composition for fluorescent display tube excited by low-speed electron beams that is made by blending a specific amount of red pigment particles of cadmium sulfide selenide with a zinc oxide fluorescent substance activated with zinc, thus giving high display contrast with no use of a filter.
CONSTITUTION: (A) Zinc-activated zinc oxide fluorescent substance is combined with (B) less than 20wt%, preferably less than 3wt%, of red pigment particles of cadmium sulfide selenide and they are mixed with a ball mill to give the objective emission composition. The component A is prepared by calcinating zinc oxide under a reducive atmosphere or by calcinating zinc oxide containing a trace amount of a zinc compound such as zinc sulfide in the air. The resulting composition is, e.g., coated on one surface of the anode plate as the fluorescent film and the plate is made to oppose to the cathode in a vacuum vessel whereby the composition is used as a fluorescent substance excited by low-speed electron beams.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4021279A JPS55133478A (en) | 1979-04-03 | 1979-04-03 | Luminescent composition and fluorescent display tube excited with low-speed electron beam |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4021279A JPS55133478A (en) | 1979-04-03 | 1979-04-03 | Luminescent composition and fluorescent display tube excited with low-speed electron beam |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55133478A true JPS55133478A (en) | 1980-10-17 |
JPS6212834B2 JPS6212834B2 (en) | 1987-03-20 |
Family
ID=12574459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4021279A Granted JPS55133478A (en) | 1979-04-03 | 1979-04-03 | Luminescent composition and fluorescent display tube excited with low-speed electron beam |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55133478A (en) |
-
1979
- 1979-04-03 JP JP4021279A patent/JPS55133478A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6212834B2 (en) | 1987-03-20 |
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