GB721624A - Improvements in or relating to luminescent screens for cathode ray tubes - Google Patents
Improvements in or relating to luminescent screens for cathode ray tubesInfo
- Publication number
- GB721624A GB721624A GB17504/52A GB1750452A GB721624A GB 721624 A GB721624 A GB 721624A GB 17504/52 A GB17504/52 A GB 17504/52A GB 1750452 A GB1750452 A GB 1750452A GB 721624 A GB721624 A GB 721624A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ray tubes
- relating
- cathode ray
- luminescent screens
- cathode
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 3
- 229910052799 carbon Inorganic materials 0.000 abstract 3
- 238000004020 luminiscence type Methods 0.000 abstract 3
- 229910052582 BN Inorganic materials 0.000 abstract 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000010849 ion bombardment Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
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
- Luminescent Compositions (AREA)
Abstract
721,624. Luminescent screens for cathode-ray tubes. FERNSEH GES. July 11, 1952 [July 12, 1951], No. 17504/52. Class 39 (1) The luminescent screen of a cathode-ray tube thus comprises boron nitride components activated preferably by carbon and giving blue and yellow luminescence respectively, the screen being relatively unaffected by ion bombardment or by temperatures of up to 3,500‹ C. A low carbon content gives a blue luminescence and a high carbon content a yellow luminescence, and a suitable mixture of these two compounds has a luminescense substantially white in colour.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE721624X | 1951-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB721624A true GB721624A (en) | 1955-01-12 |
Family
ID=6629989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17504/52A Expired GB721624A (en) | 1951-07-12 | 1952-07-11 | Improvements in or relating to luminescent screens for cathode ray tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB721624A (en) |
-
1952
- 1952-07-11 GB GB17504/52A patent/GB721624A/en not_active Expired
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