GB1465181A - Apertured-mask cathode-ray tube - Google Patents
Apertured-mask cathode-ray tubeInfo
- Publication number
- GB1465181A GB1465181A GB511674A GB511674A GB1465181A GB 1465181 A GB1465181 A GB 1465181A GB 511674 A GB511674 A GB 511674A GB 511674 A GB511674 A GB 511674A GB 1465181 A GB1465181 A GB 1465181A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pattern
- heat
- areas
- heat absorbing
- phosphor
- 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
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 6
- 239000011358 absorbing material Substances 0.000 abstract 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 4
- 239000011230 binding agent Substances 0.000 abstract 4
- 239000002245 particle Substances 0.000 abstract 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 3
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- 239000000549 coloured material Substances 0.000 abstract 2
- 238000010894 electron beam technology Methods 0.000 abstract 2
- 229910002804 graphite Inorganic materials 0.000 abstract 2
- 239000010439 graphite Substances 0.000 abstract 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 229910000480 nickel oxide Inorganic materials 0.000 abstract 2
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 abstract 2
- 229910052580 B4C Inorganic materials 0.000 abstract 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000006096 absorbing agent Substances 0.000 abstract 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000010960 cold rolled steel Substances 0.000 abstract 1
- 239000012799 electrically-conductive coating Substances 0.000 abstract 1
- WTFXARWRTYJXII-UHFFFAOYSA-N iron(2+);iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Fe+2].[Fe+3].[Fe+3] WTFXARWRTYJXII-UHFFFAOYSA-N 0.000 abstract 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 abstract 1
- IDBFBDSKYCUNPW-UHFFFAOYSA-N lithium nitride Chemical compound [Li]N([Li])[Li] IDBFBDSKYCUNPW-UHFFFAOYSA-N 0.000 abstract 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract 1
- 239000000395 magnesium oxide Substances 0.000 abstract 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 abstract 1
- HDJUVFZHZGPHCQ-UHFFFAOYSA-L manganese(2+);oxalate;dihydrate Chemical compound O.O.[Mn+2].[O-]C(=O)C([O-])=O HDJUVFZHZGPHCQ-UHFFFAOYSA-L 0.000 abstract 1
- XMWCXZJXESXBBY-UHFFFAOYSA-L manganese(ii) carbonate Chemical compound [Mn+2].[O-]C([O-])=O XMWCXZJXESXBBY-UHFFFAOYSA-L 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 238000002256 photodeposition Methods 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 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
- 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
1465181 Colour cathode ray tube display tubes RCA CORPORATION 4 Feb 1974 [5 Feb 1973] 5116/74 Heading H1D A colour c.r.t. has an apertured mask and a phosphor mosaic viewing screen with a half-tone pattern of heat absorbing material and heat reflecting material. The half-tone pattern is defined to mean any pattern of dots or lines on a contrasting background wherein the pattern or background is formed of heat absorbing material and the other is of heat reflecting material. Heat transfer from the mask to the screen and the electron beam attenuation characteristic may then be controlled. The pattern may be dots of dark coloured material on a heat reflecting A1 layer, the dots being registered with the phosphor areas and graded in size with the largest areas at the screen central portion. Heat absorbing areas may overlap in the central area for example, and may be larger than the phosphor areas at the central portion and the same size at the edge, or may be the same size at the central portion and smaller at the edge, or may be larger and smaller at the centre and periphery respectively. The heat absorbing pattern need not follow the phosphor pattern and the thickness may be uniform or graded to provide the required heat transfer. The pattern may be heat reflecting dots surrounded by heat absorbing material. Heat reflectors may be vapour deposited Al, aluminium oxide, titanium oxide or magnesium oxide, reference being also made to smooth, shiny and metallic, and also smooth and/or light coloured surfaces. Infra-red absorbers may be rough or matte black finish, or may be rough and/or dark coloured, optimally at least 1/10 the thickness of the peak emission wavelength from a black body, e.g. 8440 nm. at 80 C. Coatings may be black particles, e.g. graphite, carbon, manganese dioxide, nickel oxide and black iron oxide. Lithium nitride, boron carbide and nickel oxide are also mentioned in the prior art discussion. Brown, grey, blue, green and purple coloured materials may be used, and such as in U.S.A. Specification 3,392,397. Figs. 3 to 6 (not shown), indicate loci for equal sized areas, some dimensions being given. The half-tone pattern need not follow the phosphor pattern. Fabrication is by reference to publications. Photo-deposition of C particles may use p.v.a. photo-sensitive binder and mask or photographic master with a neutral graded filter. When the heat absorbing pattern surrounds the heat reflecting areas, a positive photo-binder is used. The photo-binder alternatively carries a salt heat-decomposable to a heat absorbing material (e.g. manganous oxalate or manganous carbonate). Fig. 1 (not shown), includes an electrically conductive coating 17 of heat absorbing material (e.g. graphite particles in a silicate binder), heat absorbing areas (33) of carbon particles, mask (35) of cold rolled steel blackened on both sides by oxidation, and gun assembly (23) producing three beams. There is also reference to shadow mask tubes with one or more electron beams, and phosphors are exemplified. Phosphor areas may be lines, round, oval or rectangular.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US329619A US3878427A (en) | 1973-02-05 | 1973-02-05 | Apertured-mask cathode-ray tube having half-tone array of heat-absorbing areas on target surface |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1465181A true GB1465181A (en) | 1977-02-23 |
Family
ID=23286251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB511674A Expired GB1465181A (en) | 1973-02-05 | 1974-02-04 | Apertured-mask cathode-ray tube |
Country Status (8)
Country | Link |
---|---|
US (1) | US3878427A (en) |
JP (1) | JPS5311425B2 (en) |
CA (1) | CA1005851A (en) |
DE (1) | DE2405480C3 (en) |
FR (1) | FR2216670B1 (en) |
GB (1) | GB1465181A (en) |
IT (1) | IT1006794B (en) |
NL (1) | NL7401516A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4623820A (en) | 1984-05-07 | 1986-11-18 | Rca Corporation | CRT with carbon-particle layer on a metallized viewing screen |
MY110574A (en) * | 1991-11-20 | 1998-08-29 | Samsung Electron Devices Co Ltd | Far-infrared emitting cathode ray tube |
JPH10144227A (en) * | 1996-11-14 | 1998-05-29 | Hitachi Ltd | Color cathode-ray tube having shadow mask |
JP3536960B2 (en) | 1997-03-11 | 2004-06-14 | 株式会社 日立ディスプレイズ | Color cathode ray tube with shadow mask |
TW512389B (en) | 1998-04-24 | 2002-12-01 | Hitachi Ltd | Color cathode ray tube having a shadow mask structure with curl reduced in a skirt portion thereof |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3392297A (en) * | 1966-12-21 | 1968-07-09 | Nat Video Corp | Color triad tube having heat-absorptive material on aluminum screen backing for cooling shadow mask |
US3661580A (en) * | 1970-01-30 | 1972-05-09 | Rca Corp | Photographic method for producing a cathode-ray tube screen structure |
-
1973
- 1973-02-05 US US329619A patent/US3878427A/en not_active Expired - Lifetime
-
1974
- 1974-01-08 IT IT19189/74A patent/IT1006794B/en active
- 1974-02-01 CA CA191,563A patent/CA1005851A/en not_active Expired
- 1974-02-04 FR FR7403602A patent/FR2216670B1/fr not_active Expired
- 1974-02-04 JP JP1441474A patent/JPS5311425B2/ja not_active Expired
- 1974-02-04 NL NL7401516A patent/NL7401516A/xx not_active Application Discontinuation
- 1974-02-04 GB GB511674A patent/GB1465181A/en not_active Expired
- 1974-02-05 DE DE2405480A patent/DE2405480C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL7401516A (en) | 1974-08-07 |
IT1006794B (en) | 1976-10-20 |
CA1005851A (en) | 1977-02-22 |
US3878427A (en) | 1975-04-15 |
DE2405480B2 (en) | 1978-01-26 |
JPS49118363A (en) | 1974-11-12 |
FR2216670A1 (en) | 1974-08-30 |
FR2216670B1 (en) | 1976-06-25 |
JPS5311425B2 (en) | 1978-04-21 |
DE2405480A1 (en) | 1974-08-08 |
DE2405480C3 (en) | 1978-09-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |