GB866150A - Improvements relating to the manufacture of transparent phosphor layer screens on glass substrates - Google Patents
Improvements relating to the manufacture of transparent phosphor layer screens on glass substratesInfo
- Publication number
- GB866150A GB866150A GB651059A GB651059A GB866150A GB 866150 A GB866150 A GB 866150A GB 651059 A GB651059 A GB 651059A GB 651059 A GB651059 A GB 651059A GB 866150 A GB866150 A GB 866150A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- chamber
- base material
- glass substrate
- ions
- 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
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
- H01J9/22—Applying luminescent coatings
- H01J9/221—Applying luminescent coatings in continuous layers
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physical Vapour Deposition (AREA)
- Luminescent Compositions (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
866,150. Luminescent materials and screens; cathode-ray tubes. FERRANTI Ltd. Feb. 9, 1960 [Feb. 25, 1959], No. 6510/59. Class 39(1). Method of forming a layer of transparent phosphor material, comprising a base material and an activator material, on a glass substrate such as the face-plate of a C.R.T., includes the steps of forming a transparent layer of the base material on the glass substrate, forming ions of the activator material, and accelerating the ions sufficiently to cause them to impinge on the layer of base material with sufficient energy to diffuse or penetrate into the lattice sites of the base material. In the apparatus shown in the Figure the glass substrate 1 carrying a layer 2 of potassium magnesium fluoride is mounted in a chamber 3 which includes an electrically heated crucible 4 containing manganese chloride 5. An electron gun assembly 6 with associated anodes 7 is mounted in an extension 8 of the chamber 3, a collector electrode 9 being mounted on the opposite side of the chamber, and a grid electrode 10 extending across the chamber. The chamber 3 is evacuated and the crucible 4 is heated to cause the manganese chloride to fill the lower part of the chamber with manganese chloride vapour. The dissociated manganese ions are accelerated towards the layer 2 of potassium magnesium fluoride by the grid electrode 10 which is maintained at a negative potential with respect to the crucible 4 by the battery 11. The glass substrate so treated may be fitted on the glass screen of a C.R.T. Alternatively the transparent phosphor layer may be applied directly to the glass screen of a C.R.T. by applying a transparent layer of the phosphor base material to the screen of the C.R.T. and thereafter introducing a beam of ions of the activator material through the neck of the tube and causing the beam to diverge and strike the base material by means of an electrostatic lens mounted in the neck of the tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB651059A GB866150A (en) | 1959-02-25 | 1959-02-25 | Improvements relating to the manufacture of transparent phosphor layer screens on glass substrates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB651059A GB866150A (en) | 1959-02-25 | 1959-02-25 | Improvements relating to the manufacture of transparent phosphor layer screens on glass substrates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB866150A true GB866150A (en) | 1961-04-26 |
Family
ID=9815832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB651059A Expired GB866150A (en) | 1959-02-25 | 1959-02-25 | Improvements relating to the manufacture of transparent phosphor layer screens on glass substrates |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB866150A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2205860A (en) * | 1987-06-12 | 1988-12-21 | Ricoh Kk | Apparatus for forming a thin film |
-
1959
- 1959-02-25 GB GB651059A patent/GB866150A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2205860A (en) * | 1987-06-12 | 1988-12-21 | Ricoh Kk | Apparatus for forming a thin film |
| US4876984A (en) * | 1987-06-12 | 1989-10-31 | Ricoh Company, Ltd. | Apparatus for forming a thin film |
| GB2205860B (en) * | 1987-06-12 | 1991-09-25 | Ricoh Kk | Apparatus for forming a thin film |
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