GB1177144A - Cathode-Ray Tube for Colour Television and Phosphorus therefor - Google Patents
Cathode-Ray Tube for Colour Television and Phosphorus thereforInfo
- Publication number
- GB1177144A GB1177144A GB2809867A GB2809867A GB1177144A GB 1177144 A GB1177144 A GB 1177144A GB 2809867 A GB2809867 A GB 2809867A GB 2809867 A GB2809867 A GB 2809867A GB 1177144 A GB1177144 A GB 1177144A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phosphor
- baked
- screen
- prepared
- red
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
- C09K11/7784—Chalcogenides
- C09K11/7787—Oxides
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
1,177,144. Luminescent materials. MATSUSHITA ELECTRONICS CORP. 19 June, 1967 [8 July, 1966], No. 28098/67. Heading C4S. A red-emitting phosphor which can be tightly packed for use in a C.R.T. comprises an europium activated oxide of yttrium and/or gadolinium fluxed with Li, Na, Be, Sr fluoride, V 2 O 5 , NH 4 vanadate, borax or boric acid, the phosphor having a surface smoothness such that the ratio of mean particle diameter determined by the gas adsorbtion and air permeability methods is no less than 0À8. The phosphor is prepared by adding oxalic acid to an aqueous solution of Y and En salts to precipitate oxalate which is then baked to obtain oxide and thus is heated to 1000-1400‹ C. with the flux. The phosphor is treated with silica sol or immersed in B 2 O 3 .12WO 3 or Ti(OC 2 H 5 ) 4 such that silica, B 2 O 3 .12WO 3 or TiO 2 is adsorbed by the phosphor when it is dried and baked. A colour C.R.T. screen with a multiplicity of dots is prepared by applying blue, green and red emitting phosphors suspended in aqueous photo-sensitive solutions of P.V.A. and NH 4 dichromate and illuminating the screen through a shadow mask. ZnS: Ag and (Zn.Cd)S: Ag are the blue and green emitting phosphors.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4498366 | 1966-07-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1177144A true GB1177144A (en) | 1970-01-07 |
Family
ID=12706682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2809867A Expired GB1177144A (en) | 1966-07-08 | 1967-06-19 | Cathode-Ray Tube for Colour Television and Phosphorus therefor |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1537229B2 (en) |
| FR (1) | FR1550113A (en) |
| GB (1) | GB1177144A (en) |
| NL (1) | NL6709479A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109929555A (en) * | 2018-12-25 | 2019-06-25 | 云南大学 | A kind of borophosphate white fluorescent powder and its preparation method and application |
| CN109929553A (en) * | 2018-12-25 | 2019-06-25 | 云南大学 | A kind of borophosphate orange red fluorescent powder and its preparation method and application |
| CN109929554A (en) * | 2018-12-25 | 2019-06-25 | 云南大学 | A kind of borophosphate green emitting phosphor and its preparation method and application |
| CN110003906A (en) * | 2019-02-18 | 2019-07-12 | 云南大学 | A kind of europium boron phosphorus doped hydrochlorate orange-red fluorescence powder and its preparation method and application |
| CN110003904A (en) * | 2019-04-04 | 2019-07-12 | 云南大学 | A kind of Ce boron phosphorus doped hydrochlorate ultraviolet fluorescence powder and preparation method thereof |
| CN110003905A (en) * | 2019-04-04 | 2019-07-12 | 云南大学 | A kind of Pr activation borophosphate red fluorescence powder and preparation method thereof |
-
1967
- 1967-06-19 GB GB2809867A patent/GB1177144A/en not_active Expired
- 1967-07-04 FR FR1550113D patent/FR1550113A/fr not_active Expired
- 1967-07-07 NL NL6709479A patent/NL6709479A/xx unknown
- 1967-10-26 DE DE19671537229 patent/DE1537229B2/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109929555A (en) * | 2018-12-25 | 2019-06-25 | 云南大学 | A kind of borophosphate white fluorescent powder and its preparation method and application |
| CN109929553A (en) * | 2018-12-25 | 2019-06-25 | 云南大学 | A kind of borophosphate orange red fluorescent powder and its preparation method and application |
| CN109929554A (en) * | 2018-12-25 | 2019-06-25 | 云南大学 | A kind of borophosphate green emitting phosphor and its preparation method and application |
| CN109929554B (en) * | 2018-12-25 | 2021-12-21 | 云南大学 | Boron phosphate green fluorescent powder and preparation method and application thereof |
| CN109929553B (en) * | 2018-12-25 | 2021-12-24 | 云南大学 | Borophosphate orange-red fluorescent powder and preparation method and application thereof |
| CN109929555B (en) * | 2018-12-25 | 2022-01-18 | 云南大学 | White boron phosphate fluorescent powder and preparation method and application thereof |
| CN110003906A (en) * | 2019-02-18 | 2019-07-12 | 云南大学 | A kind of europium boron phosphorus doped hydrochlorate orange-red fluorescence powder and its preparation method and application |
| CN110003904A (en) * | 2019-04-04 | 2019-07-12 | 云南大学 | A kind of Ce boron phosphorus doped hydrochlorate ultraviolet fluorescence powder and preparation method thereof |
| CN110003905A (en) * | 2019-04-04 | 2019-07-12 | 云南大学 | A kind of Pr activation borophosphate red fluorescence powder and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1537229A1 (en) | 1972-03-16 |
| FR1550113A (en) | 1968-12-20 |
| NL6709479A (en) | 1968-01-09 |
| DE1537229B2 (en) | 1972-03-16 |
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