GB1476688A - Cathode-ray tube - Google Patents
Cathode-ray tubeInfo
- Publication number
- GB1476688A GB1476688A GB3377674A GB3377674A GB1476688A GB 1476688 A GB1476688 A GB 1476688A GB 3377674 A GB3377674 A GB 3377674A GB 3377674 A GB3377674 A GB 3377674A GB 1476688 A GB1476688 A GB 1476688A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resist
- strips
- film
- pva
- spaces
- 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
- H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
- H01J9/2278—Application of light absorbing material, e.g. between the luminescent areas
-
- 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
-
- 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)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
1476688 Colour television tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 31 July 1974 [3 Aug 1973] 33776/74 Heading H1D In a negative tolerance colour TV shadow mask three gun tube (Fig. 1, not shown) i.e. with triplets of phosphor strips B, R, G, narrower than their electron impact areas, on display screen 11 of glass face-plate 4, in order to allow free passage of ambient light 15 and thermal radiation from the mask the glass 4 is left uncoated between the stripes, which are backed by A1 film 13 connected at their ends to A1 film transverse bus strips for charge return. The A1 film is initially applied over the entire screen, covered by a PVA/ammonia bichromate resist: illumination of the end strips and, via the mark, of the three sets of phosphor stripes makes the resist insoluble, allowing that in the spaces 14 to be washed off in water, so that the Al may be etched off in acid NH 4 Cl/HgCl 2 solution. The end strips may alternatively be graphite. The resist may be PVA/FeCl 3 , becoming water soluble in the spaces on their illumination, allowing etching of the A1. In all cases organic material is finally burnt off.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7310738A NL7310738A (en) | 1973-08-03 | 1973-08-03 | CATHOD BEAM TUBE FOR DISPLAYING COLORED IMAGES. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1476688A true GB1476688A (en) | 1977-06-16 |
Family
ID=19819365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3377674A Expired GB1476688A (en) | 1973-08-03 | 1974-07-31 | Cathode-ray tube |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5750021B2 (en) |
| BE (1) | BE818399A (en) |
| CA (1) | CA1018580A (en) |
| DE (1) | DE2435473A1 (en) |
| ES (1) | ES428848A1 (en) |
| FR (1) | FR2239762B1 (en) |
| GB (1) | GB1476688A (en) |
| IT (1) | IT1016743B (en) |
| NL (1) | NL7310738A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61190830U (en) * | 1985-05-21 | 1986-11-27 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5713985B2 (en) * | 1971-08-27 | 1982-03-20 |
-
1973
- 1973-08-03 NL NL7310738A patent/NL7310738A/en not_active Application Discontinuation
-
1974
- 1974-07-24 DE DE19742435473 patent/DE2435473A1/en not_active Ceased
- 1974-07-26 CA CA205,738A patent/CA1018580A/en not_active Expired
- 1974-07-31 IT IT6942974A patent/IT1016743B/en active
- 1974-07-31 GB GB3377674A patent/GB1476688A/en not_active Expired
- 1974-07-31 JP JP49087116A patent/JPS5750021B2/ja not_active Expired
- 1974-08-01 BE BE147212A patent/BE818399A/en unknown
- 1974-08-01 ES ES428848A patent/ES428848A1/en not_active Expired
- 1974-08-05 FR FR7427110A patent/FR2239762B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES428848A1 (en) | 1976-09-01 |
| CA1018580A (en) | 1977-10-04 |
| DE2435473A1 (en) | 1975-02-13 |
| JPS5750021B2 (en) | 1982-10-25 |
| JPS5046072A (en) | 1975-04-24 |
| NL7310738A (en) | 1975-02-05 |
| IT1016743B (en) | 1977-06-20 |
| FR2239762B1 (en) | 1977-10-14 |
| FR2239762A1 (en) | 1975-02-28 |
| BE818399A (en) | 1975-02-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |