DE2051099C3 - Fluorescent mixture for scanning tubes - Google Patents
Fluorescent mixture for scanning tubesInfo
- Publication number
- DE2051099C3 DE2051099C3 DE2051099A DE2051099A DE2051099C3 DE 2051099 C3 DE2051099 C3 DE 2051099C3 DE 2051099 A DE2051099 A DE 2051099A DE 2051099 A DE2051099 A DE 2051099A DE 2051099 C3 DE2051099 C3 DE 2051099C3
- Authority
- DE
- Germany
- Prior art keywords
- activated
- fluorescent
- scanning
- percent
- weight
- 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
- 239000000203 mixture Substances 0.000 title claims description 9
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052771 Terbium Inorganic materials 0.000 claims description 5
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 claims description 5
- -1 activated yttrium silicate Chemical class 0.000 claims 1
- 238000003756 stirring Methods 0.000 claims 1
- 229910052727 yttrium Inorganic materials 0.000 description 4
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 241001282110 Pagrus major Species 0.000 description 1
- NVZBIFPUMFLZLM-UHFFFAOYSA-N [Si].[Y] Chemical compound [Si].[Y] NVZBIFPUMFLZLM-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- PSNPEOOEWZZFPJ-UHFFFAOYSA-N alumane;yttrium Chemical class [AlH3].[Y] PSNPEOOEWZZFPJ-UHFFFAOYSA-N 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- IQDXNHZDRQHKEF-UHFFFAOYSA-N dialuminum;dicalcium;dioxido(oxo)silane Chemical compound [Al+3].[Al+3].[Ca+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O IQDXNHZDRQHKEF-UHFFFAOYSA-N 0.000 description 1
- 238000000295 emission spectrum Methods 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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
- C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
- C09K11/7774—Aluminates
-
- 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
- C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
- C09K11/77742—Silicates
Description
Die Erfindung bezieht sich auf eine Leuchtsloffmischung für Leuchtschirme in Abtasiröhren. Es ist bereits eine Leuchtstoffmischling für eine Elektronenstrahlröhre, vorzugsweise für Lichtstrahlabtastung. vorgeschlagen worden (deutsche Offenlegiingsschrif! 2 035 25S), die zu mehr als Wr aus einem Yttriumsilikat-Leuchtstoff besteht, welcher mit Terbium aktiviert ist. und dessen Aktivatormenge IO ' bis 10 1Ci beträgt. Vorzugsweise soll das Yltriumsilikat in Form des Orthosilikats mit 3wertii!em Terbium aktiviert verwendet sein.The invention relates to a fluorescent mixture for fluorescent screens in Abtasi tubes. It is already a hybrid fluorescent material for a cathode ray tube, preferably for light beam scanning. has been proposed (German Offenlegiingsschrift! 2 035 25S), which consists to more than Wr of an yttrium silicate phosphor which is activated with terbium. and whose amount of activator is IO 'to 10 1 Ci. The yltrium silicate should preferably be used in the form of the orthosilicate activated with 3-valued terbium.
Hei Versuchen mit einer Abtastrohre mit einem Leuchtschirm aus diesem Material ergab sich, daß der blau-grün leuchtende Leuchtstoff eine sehr kurze Abklingzeit hat und eine gunstige Lichtausbeute besitzt. Bei der Anwendung dieser Röhre zur Abtastung von Farbfilmen zeigte es sich jedoch, daß das Emissionsipeklrum des neuen Leuchtstoffs /u wenig Rot enthält, so daß für die Ableitung einer elektrischen Sif nalkomponenle für rotes Licht zu wenig Energie zur Verfügung steht. Die Folge hiervon ist, daß das Signal-Rausehverhältnis im Rotkanal ungünstiger ausfällt als in den anderen Kanälen. Es ist die Aufgabe der Erfindung, einen Leuchtstoff anzugeben, der diesen Nachteil nicht aufweist.Hei trying with a scanning tube with a Fluorescent screen made of this material showed that the blue-green fluorescent substance has a very short decay time and has a favorable light output. When this tube is used for scanning color films, however, it has been found that the emission spectrum of the new phosphor / u contains little red, so that for the derivation of an electrical Sif nalkomponenle for red light too little energy is available. The consequence of this is that the signal-to-noise ratio is less favorable in the red channel than in the other channels. It is the object of the invention to provide a phosphor that has this Does not have any disadvantage.
Wegen des außerordentlich kurzen Nachleuchtens des Yttriumsilikats ist es nicht möglich, irgendeinem bekannten rot-emittierenden Leuchtstoff als Mischkomponenle zuzusetzen und einen Leuchtschirm aus dieser Mischung herzustellen, weil hei schnellbewegten Gegenständen im Fernsehbild ein Nachziehen beobachtbar sein würde; z. B. würde bei zu lang nachleuchtender Rotkomponente an bewegten Kanten ein roter Schweiferscheinen. Es sind bereits Yttriumsilikai-I euchtstoffe /ur Umwandlung uliravioletter Strahlung in sichtbares Licht bekannt, bei welchen Yttrium oder Mischungen mit Lanthan, ferner Terbium, Erbium oder Europium verwende, wurden. Zum anderen ist es bekannt, bej Leuchtschirmen für Liehipiüiklabtastgeräle mit 3wertigem Cd aktiviertes Yllriumaluminat /u verwenden, das z. B. aus lh.S g Yttrium-Oxyd, 20 g Aluminium-Oxyd und 11.41Jg Cer-Oxyd hergestellt ist. Für Lichtpunktabtastung is! auch mil C'er aktiviertes Yttrium-Aluminal bekannt, dem /ur Erzielung eines stärkeren Blauantcils mit 3werti«em C'er aktiviertes C'alzium-Aluminium-Silikat zugesetzt ist.Because of the extremely short afterglow of the yttrium silicate, it is not possible to add any known red-emitting phosphor as a mixed component and to produce a luminescent screen from this mixture, because dragging would be observable on fast moving objects in the television picture; z. B. If the red component is too long afterglow, a red tail would appear on moving edges. Yttrium silicon fluorescent substances / for the conversion of ultraviolet radiation into visible light are already known, in which yttrium or mixtures with lanthanum, furthermore terbium, erbium or europium were used. On the other hand, it is known to use bej luminous screens for Liehipiüiklabtastgeräle with trivalent Cd activated Yllriumaluminat / u, the z. B. from 1h.S g yttrium oxide, 20 g aluminum oxide and 11.4 1 Jg cerium oxide is made. For light point scanning is! also known with activated yttrium aluminum, to which calcium aluminum silicate is added to achieve a stronger blue content.
Das Leuchistoffgemisch für Abtastrohren, das nut Cer aktiviertes Yttrium-Aluminai enthält, enthält erfindungsgemäß außerdem ein mit 10 ' bis 10 Gcwichtsprozent '!Vrbium aktiviertes Yttriumsilikat, dessen Anteil am Leuchtsloffgemisch 40 bis <S0 Gewichtsprozent vorzugsweise 20 bis 30 Gewichtsprozent beträgt. Das Yttriumaluminat ist vorzugsweise Orthoaluminat (Y1AKO,,).The fluorescent mixture for scanning tubes, which contains only cerium-activated yttrium-alumina, according to the invention also contains an yttrium silicate activated with 10 to 10 percent by weight, the proportion of which in the fluorescent mixture is 40 to 50 percent by weight, preferably 20 to 30 percent by weight. The yttrium aluminate is preferably orthoaluminate (Y 1 AKO ,,).
Die Rotemission von Yltriurnaiuminat ist sehr kräftig, so daß ein Anteil von 20 bis 30 Gewichtsprozent ausreicht, um einen Mischleuchtstoff /u erhalten, der auch im Rotkanal eines Filmabtaslgerätcs ein Fernsehsignal zu gewinnen erlaubt, dessen Signal-Rauscliverhältnis dem der anderer! Kanüle entspricht.The red emission of yltrium aluminate is very high strong, so that a proportion of 20 to 30 percent by weight is sufficient to get a mixed fluorescent material / u that is also in the red channel of a film scanner TV signal to gain allowed, its signal-to-noise ratio that of the others! Cannula corresponds.
Claims (2)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2051099A DE2051099C3 (en) | 1970-10-17 | 1970-10-17 | Fluorescent mixture for scanning tubes |
| NL7114215A NL7114215A (en) | 1970-10-17 | 1971-10-15 | |
| GB4812371A GB1342324A (en) | 1970-10-17 | 1971-10-15 | Electron beam tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2051099A DE2051099C3 (en) | 1970-10-17 | 1970-10-17 | Fluorescent mixture for scanning tubes |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2051099A1 DE2051099A1 (en) | 1972-04-20 |
| DE2051099B2 DE2051099B2 (en) | 1974-06-12 |
| DE2051099C3 true DE2051099C3 (en) | 1975-01-23 |
Family
ID=5785446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2051099A Expired DE2051099C3 (en) | 1970-10-17 | 1970-10-17 | Fluorescent mixture for scanning tubes |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE2051099C3 (en) |
| GB (1) | GB1342324A (en) |
| NL (1) | NL7114215A (en) |
-
1970
- 1970-10-17 DE DE2051099A patent/DE2051099C3/en not_active Expired
-
1971
- 1971-10-15 NL NL7114215A patent/NL7114215A/xx unknown
- 1971-10-15 GB GB4812371A patent/GB1342324A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1342324A (en) | 1974-01-03 |
| NL7114215A (en) | 1972-04-19 |
| DE2051099B2 (en) | 1974-06-12 |
| DE2051099A1 (en) | 1972-04-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) |