GB758803A - Process for forming colour screens - Google Patents
Process for forming colour screensInfo
- Publication number
- GB758803A GB758803A GB30109/54A GB3010954A GB758803A GB 758803 A GB758803 A GB 758803A GB 30109/54 A GB30109/54 A GB 30109/54A GB 3010954 A GB3010954 A GB 3010954A GB 758803 A GB758803 A GB 758803A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- mask
- resist
- tube
- water
- 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
- 238000000034 method Methods 0.000 title abstract 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 239000008367 deionised water Substances 0.000 abstract 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 abstract 2
- 230000001376 precipitating effect Effects 0.000 abstract 2
- 238000005406 washing Methods 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 abstract 1
- 108010010803 Gelatin Proteins 0.000 abstract 1
- 239000004372 Polyvinyl alcohol Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052786 argon Inorganic materials 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 239000000084 colloidal system Substances 0.000 abstract 1
- 239000003599 detergent Substances 0.000 abstract 1
- 235000019253 formic acid Nutrition 0.000 abstract 1
- 239000008273 gelatin Substances 0.000 abstract 1
- 229920000159 gelatin Polymers 0.000 abstract 1
- 235000019322 gelatine Nutrition 0.000 abstract 1
- 235000011852 gelatine desserts Nutrition 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229920002451 polyvinyl alcohol Polymers 0.000 abstract 1
- 239000000741 silica gel Substances 0.000 abstract 1
- 229910002027 silica gel Inorganic materials 0.000 abstract 1
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
- H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes
Abstract
758,803. Colour television tubes. COLUMBIA BROADCASTING SYSTEM, Inc. Oct. 19, 1954 [Oct. 20, 1953], No. 30109/54. Drawings to Specification. Class 39 (1). The luminescent screen of a curved-mask, curved-screen colour television receiver tube is made by applying the phosphors each in a single stage by settling the phosphor through a liquid cushion, applying photo-sensitive resist material, exposing it at the appropriate angle to light passing through the mask, developing and washing away unexposed areas of resist and underlying phosphor. The screen surface is first thoroughly cleaned and covered with de-ionized water, a precipitating agent is added and a green phosphor mixed with a silicate solution is settled through the water cushion on to the screen, the silicate and the precipitating agent forming silica gel which acts as a binder. The water is decanted and a photo-sensitive resist, e.g. dichromated colloids, albumen gelatin or polyvinyl alcohol is sprayed on, baked at low temperature and exposed. Washing with de-ionized water and detergent removes unexposed resist and a weak solution of formic acid hardens the resulting screen. The process is repeated for the blue and red phosphors. The screen is finally baked, coated lightly with silicate solution, dried, and aluminized. The exposure mask is that used in the tube or a copy, and the point-source of light for the exposure may be an argon arc, placed as required in the position of the appropriate gun of the tube.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US387192A US3080231A (en) | 1953-10-20 | 1953-10-20 | Process for photographically forming color screens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB758803A true GB758803A (en) | 1956-10-10 |
Family
ID=23528870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30109/54A Expired GB758803A (en) | 1953-10-20 | 1954-10-19 | Process for forming colour screens |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3080231A (en) |
| DE (1) | DE954336C (en) |
| FR (1) | FR1113836A (en) |
| GB (1) | GB758803A (en) |
| NL (1) | NL191673A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3056300A (en) * | 1957-03-15 | 1962-10-02 | Gen Motors Corp | Unbalance indicator |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3054672A (en) * | 1957-01-14 | 1962-09-18 | Philco Corp | Method of manufacturing electrical apparatus |
| NL254649A (en) * | 1960-08-06 | |||
| BE634597A (en) * | 1962-07-06 | |||
| US3440077A (en) * | 1966-08-08 | 1969-04-22 | Sylvania Electric Prod | Method of fabricating a color cathode ray tube screen |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2328292A (en) * | 1941-12-19 | 1943-08-31 | Rca Corp | Method of depositing phosphor materials |
| US2435889A (en) * | 1943-06-02 | 1948-02-10 | Johnson Matthey Co Ltd | Production of metallic designs on nonmetallic materials |
| US2446915A (en) * | 1946-07-13 | 1948-08-10 | Gen Motors Corp | Photographic process of producing a printing image |
| US2684306A (en) * | 1947-10-09 | 1954-07-20 | Emi Ltd | Production of fluorescent screens by settling materials from liquid suspepnsions |
| NL158008B (en) * | 1950-04-28 | Ibm | HOLOGRAPHIC MEMORY. |
-
0
- NL NL191673D patent/NL191673A/xx unknown
-
1953
- 1953-10-20 US US387192A patent/US3080231A/en not_active Expired - Lifetime
-
1954
- 1954-10-19 GB GB30109/54A patent/GB758803A/en not_active Expired
- 1954-10-19 FR FR1113836D patent/FR1113836A/en not_active Expired
- 1954-10-20 DE DEC10120A patent/DE954336C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3056300A (en) * | 1957-03-15 | 1962-10-02 | Gen Motors Corp | Unbalance indicator |
Also Published As
| Publication number | Publication date |
|---|---|
| US3080231A (en) | 1963-03-05 |
| NL191673A (en) | |
| DE954336C (en) | 1956-12-13 |
| FR1113836A (en) | 1956-04-04 |
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