GB1465187A - Cathode-ray tube and application thereof - Google Patents
Cathode-ray tube and application thereofInfo
- Publication number
- GB1465187A GB1465187A GB1345274A GB1345274A GB1465187A GB 1465187 A GB1465187 A GB 1465187A GB 1345274 A GB1345274 A GB 1345274A GB 1345274 A GB1345274 A GB 1345274A GB 1465187 A GB1465187 A GB 1465187A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phosphor
- remanent
- barrier
- phosphors
- colour
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/18—Luminescent screens
- H01J29/187—Luminescent screens screens with more than one luminescent material (as mixtures for the treatment of the screens)
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Luminescent Compositions (AREA)
Abstract
1465187 Luminescent screens THOMSONCSF 26 March 1974 [27 March 1973] 13452/74 Heading C4S [Also in Division H1] A c.r.t. display screen comprises a substantially non-remanent phosphor 1, remanent phosphor 2 with inert barrier B and a substantially non-remanent phosphor 3 with a barrier B<SP>1</SP>, the colour of phosphor 3 superimposed on that of phosphor 1 producing a colour subjectively the same as that of phosphor 2 so that when the beam voltage is increased to produce a persistent trace, the "flash" effect is eliminated. The respective emissions may be green, orange and red. Fig. 1 is schematic only, and is intended to include a mixture of coated phosphors for example "Rise time" requirements of the phosphors are discussed. Operation for barriers of different thicknesses is discussed w.r.t., Fig. 4. Between voltages V 01 and V 02 , a non-remanent intermediate colour is produced (e.g. yellow). In Fig. 2, the non-remanent phosphor 1 covers non-remanent phosphor 3 and barrier B<SP>1</SP> and inherently acts as a further barrier. Phosphor powders may be 5 to 20 Á grain size, and the two non-remanent phosphors each in amount 20 to 30% by wt. of the total mixture. Phosphor grains-2 and 3 may be coated to 1 Á thickness. PPI displays are exemplified.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7310944A FR2223830B1 (en) | 1973-03-27 | 1973-03-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1465187A true GB1465187A (en) | 1977-02-23 |
Family
ID=9116918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1345274A Expired GB1465187A (en) | 1973-03-27 | 1974-03-26 | Cathode-ray tube and application thereof |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3919584A (en) |
| JP (1) | JPS5842581B2 (en) |
| DE (1) | DE2414842C3 (en) |
| FR (1) | FR2223830B1 (en) |
| GB (1) | GB1465187A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2924176C2 (en) * | 1979-06-15 | 1982-11-18 | Fried. Krupp Gmbh, 4300 Essen | Method for the display of reflective location signals for carrying out the method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2446764A (en) * | 1944-04-21 | 1948-08-10 | Emi Ltd | Cathode-ray tube |
| US3552989A (en) * | 1967-11-21 | 1971-01-05 | Sylvania Electric Prod | Cathode ray tube screen forming process |
| US3522463A (en) * | 1968-07-15 | 1970-08-04 | Rca Corp | Electron tube multicolor dual persistence screen comprising phosphorcoated phosphor particles |
| US3651362A (en) * | 1968-07-23 | 1972-03-21 | Iwatsu Electric Co Ltd | Screens for cathode ray tubes with discrete phosphor layers |
| US3780371A (en) * | 1969-07-28 | 1973-12-18 | Us Navy | Electronic counter-countermeasures system |
| FR2068015A5 (en) * | 1969-11-25 | 1971-08-20 | Thomson Csf |
-
1973
- 1973-03-27 FR FR7310944A patent/FR2223830B1/fr not_active Expired
-
1974
- 1974-03-21 US US453336A patent/US3919584A/en not_active Expired - Lifetime
- 1974-03-26 GB GB1345274A patent/GB1465187A/en not_active Expired
- 1974-03-27 JP JP49033591A patent/JPS5842581B2/en not_active Expired
- 1974-03-27 DE DE2414842A patent/DE2414842C3/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2223830B1 (en) | 1976-11-05 |
| JPS5842581B2 (en) | 1983-09-20 |
| DE2414842B2 (en) | 1981-04-30 |
| FR2223830A1 (en) | 1974-10-25 |
| JPS5010066A (en) | 1975-02-01 |
| US3919584A (en) | 1975-11-11 |
| DE2414842C3 (en) | 1982-03-04 |
| DE2414842A1 (en) | 1974-10-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |