GB1533064A - Making a colour cathode-ray tube - Google Patents
Making a colour cathode-ray tubeInfo
- Publication number
- GB1533064A GB1533064A GB3572776A GB3572776A GB1533064A GB 1533064 A GB1533064 A GB 1533064A GB 3572776 A GB3572776 A GB 3572776A GB 3572776 A GB3572776 A GB 3572776A GB 1533064 A GB1533064 A GB 1533064A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- layer
- edge
- slot
- light
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Electroluminescent Light Sources (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
1533064 Colour television tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 27 Aug 1976 [1 Sept 1975] 35727/76 Heading H1D When manufacturing the screen of a slotted shadow-mask colour television tube, by a method in which a photosensitive layer on the screen is exposed to light from at least two different positions, such that beams passing through two adjacent slots overlap on the layer, while the two beams passing through a given slot are spaced apart on the layer to leave an unexposed region on which the phosphor is deposited, colour error in the two extreme edge phosphor triplets is avoided by initially exposing the whole screen except for the regions extending outwards from the penultimate lines of triplets at each edge of the screen, and providing a non- luminescent layer on those regions, such that the electron beams which pass through the two extreme edge slots of the shadow-mask impinge thereon. As shown, the unexposed region corresponding to one edge slot-the left-hand edge slot 14 as shown in Fig. 4-is first formed, with a source of light moved during exposure as shown by the arrows, while the right-hand edge of the screen is covered ; the procedure is then repeated with the rales of the edges reversed. The non-luminescent-layer may be light absorbing or conductive.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7510273A NL7510273A (en) | 1975-09-01 | 1975-09-01 | PROCEDURE FOR MANUFACTURE OF A CATHODE RAY TUBE FOR DISPLAYING COLORED IMAGES AND CATHOD RAY TUBE MADE IN ACCORDANCE WITH THIS PROCESS. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1533064A true GB1533064A (en) | 1978-11-22 |
Family
ID=19824387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3572776A Expired GB1533064A (en) | 1975-09-01 | 1976-08-27 | Making a colour cathode-ray tube |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5230157A (en) |
| BE (1) | BE845677A (en) |
| CA (1) | CA1060079A (en) |
| DE (1) | DE2637755C2 (en) |
| ES (2) | ES451102A1 (en) |
| FR (1) | FR2322447A1 (en) |
| GB (1) | GB1533064A (en) |
| IT (1) | IT1071422B (en) |
| NL (1) | NL7510273A (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3152900A (en) * | 1958-11-14 | 1964-10-13 | Rca Corp | Art of making electron-sensitive mosaic screens |
| US3475169A (en) * | 1965-08-20 | 1969-10-28 | Zenith Radio Corp | Process of electrostatically screening color cathode-ray tubes |
| NL7014480A (en) * | 1970-10-02 | 1972-04-05 | ||
| CA961686A (en) * | 1971-10-05 | 1975-01-28 | Senri Miyaoka | Method for producing a striped cathode ray tube screen |
| JPS5236390B2 (en) * | 1972-08-07 | 1977-09-14 |
-
1975
- 1975-09-01 NL NL7510273A patent/NL7510273A/en not_active Application Discontinuation
-
1976
- 1976-08-21 DE DE19762637755 patent/DE2637755C2/en not_active Expired
- 1976-08-26 CA CA259,898A patent/CA1060079A/en not_active Expired
- 1976-08-27 IT IT6910376A patent/IT1071422B/en active
- 1976-08-27 GB GB3572776A patent/GB1533064A/en not_active Expired
- 1976-08-28 JP JP10221676A patent/JPS5230157A/en active Pending
- 1976-08-30 ES ES451102A patent/ES451102A1/en not_active Expired
- 1976-08-30 BE BE170212A patent/BE845677A/en unknown
- 1976-09-01 FR FR7626410A patent/FR2322447A1/en active Granted
-
1977
- 1977-08-12 ES ES461560A patent/ES461560A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2637755A1 (en) | 1977-03-10 |
| DE2637755C2 (en) | 1986-03-06 |
| ES451102A1 (en) | 1977-12-01 |
| NL7510273A (en) | 1977-03-03 |
| ES461560A1 (en) | 1978-06-01 |
| JPS5230157A (en) | 1977-03-07 |
| BE845677A (en) | 1977-02-28 |
| FR2322447B1 (en) | 1980-05-16 |
| FR2322447A1 (en) | 1977-03-25 |
| CA1060079A (en) | 1979-08-07 |
| IT1071422B (en) | 1985-04-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |