GB469419A - Improvements in or relating to cathode ray tubes - Google Patents
Improvements in or relating to cathode ray tubesInfo
- Publication number
- GB469419A GB469419A GB235636A GB235636A GB469419A GB 469419 A GB469419 A GB 469419A GB 235636 A GB235636 A GB 235636A GB 235636 A GB235636 A GB 235636A GB 469419 A GB469419 A GB 469419A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- gold
- tube
- deposited
- mica
- 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
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 5
- 229910052737 gold Inorganic materials 0.000 abstract 5
- 239000010931 gold Substances 0.000 abstract 5
- 239000010445 mica Substances 0.000 abstract 3
- 229910052618 mica group Inorganic materials 0.000 abstract 3
- 229910052844 willemite Inorganic materials 0.000 abstract 2
- 241000974482 Aricia saepiolus Species 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000000151 deposition Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 239000005416 organic matter Substances 0.000 abstract 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract 1
- 238000004544 sputter deposition Methods 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
- H01J29/28—Luminescent screens with protective, conductive or reflective layers
Landscapes
- Luminescent Compositions (AREA)
Abstract
469,419. Fluorescent screens. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., BRETT, G. F., and BANKS, G. B. Jan. 24, 1936, No. 2356. [Class 98 (i)] [Also in Group XL] The fluorescent screen of a cathode-ray tube is deposited on a thin electrically conductive layer through which the image can be viewed, loss of light by absorption and reflection in the layer being reduced by forming the layer of such material and thinness that its colour, when viewed by transmitted light, approximately matches that of the fluorescent light. A thin gold layer may be deposited by evaporation in vacuo, sputtering or chemically on the end wall of the tube before a screen of willemite fluorescing greenish-blue is deposited. An electric connection is provided to maintain the layer at a high positive potential, and may be made by a platinum wire fused through the wall or by depositing the gold layer so as to overlap a silvering on the envelope of the tube. In a modification, the gold and willemite are applied to a thin mica disc folded or bent for introduction through the neck of the tube, the gold being applied in liquid form and the mica treated to drive off organic matter. A wire drawn through a hole in the tube is attached to nickel foil clipped to the edge of the mica to make contact with the gold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB235636A GB469419A (en) | 1936-01-24 | 1936-01-24 | Improvements in or relating to cathode ray tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB235636A GB469419A (en) | 1936-01-24 | 1936-01-24 | Improvements in or relating to cathode ray tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB469419A true GB469419A (en) | 1937-07-26 |
Family
ID=9738112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB235636A Expired GB469419A (en) | 1936-01-24 | 1936-01-24 | Improvements in or relating to cathode ray tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB469419A (en) |
-
1936
- 1936-01-24 GB GB235636A patent/GB469419A/en not_active Expired
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