DE2051099B2 - Fluorescent mixture for cathode ray tubes - Google Patents
Fluorescent mixture for cathode ray tubesInfo
- Publication number
- DE2051099B2 DE2051099B2 DE2051099A DE2051099A DE2051099B2 DE 2051099 B2 DE2051099 B2 DE 2051099B2 DE 2051099 A DE2051099 A DE 2051099A DE 2051099 A DE2051099 A DE 2051099A DE 2051099 B2 DE2051099 B2 DE 2051099B2
- Authority
- DE
- Germany
- Prior art keywords
- cathode ray
- ray tubes
- activated
- weight
- fluorescent mixture
- 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.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 10
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 7
- 229910052771 Terbium Inorganic materials 0.000 claims description 6
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 claims description 6
- 229910052727 yttrium Inorganic materials 0.000 claims description 6
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 6
- 229910052684 Cerium Inorganic materials 0.000 claims description 5
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 2
- 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 3
- -1 cerium activated yttrium aluminate Chemical class 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 241001282110 Pagrus major Species 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 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
- 239000000463 material Substances 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
- 239000000126 substance Substances 0.000 description 1
- 150000003746 yttrium Chemical class 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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
Description
Die Erfindung bezieht sich auf eine Leuchtstoffmischung für Leuchtschinne in Abtaströhren. Es ist bereits eine Leuchtstoffmischung für eine Elektronenstrahlröhre, vorzugsweise für Lichtstrahlabtastung, vorgeschlagen worden (deutsche Offenlegungsschrift 2 035 258). die zu mehr als 90% aus dnem Yttriumsilikat-Leuchtstoff besteht, welcher mit Terbium aktiviert ist, und dessen Aktivatormenge 10~3 bis 10~5% beträgt. Vorzugsweise soll das Yttriumsilikat in Form des Orthosilikats mit 3wertigem Terbium aktiviert venvendet sein.The invention relates to a phosphor mixture for luminous channels in scanning tubes. A phosphor mixture for a cathode ray tube, preferably for light beam scanning, has already been proposed (German Offenlegungsschrift 2 035 258). which consists of more than 90% of the yttrium silicate phosphor, which is activated with terbium, and the amount of activator is 10 ~ 3 to 10 ~ 5%. The yttrium silicate should preferably be used in the form of the orthosilicate activated with trivalent terbium.
Bei Versuchen mit einer Abtaströhre mit einem Leuchtschirm aus diesem Material ergab sich, daß der blau-grün leuchtende Leuchtstoff eine sehr kurze Abklingzeit hat und eine günstige Lichtausbeute besitzt. Bei der Anwendung dieser Röhre zur Abtastung von Farbfilmen zeigte es sich jedoch, daß das Emissionsspektrum des neuen Leuchtstoffs zu wenig Rot enthält, so daß für die Ableitung einer elektrischen Signalkomponenie für rotes Licht zu wenig Energie zur Verfugung steht. Die Folge hiervon ist, daß das Sigrml-Rauschverhältnis im Rotkanal ungünstiger ausfällt als in den anderen Kanälen. Es ist die Aufgabe der Erfindung, einen Leuchtstoff anzugeben, der diesen Nachteil nicht aufweist,In tests with a scanning tube with a fluorescent screen made of this material, it was found that the blue-green fluorescent substance has a very short decay time and has a favorable luminous efficacy. When using this tube for scanning color films, however, it was found that the emission spectrum of the new phosphor contains too little red, so that an electrical signal component can be derived too little energy is available for red light. The consequence of this is that the Sigrml-noise ratio is less favorable in the red channel than in the other channels. It's the job the invention of specifying a phosphor which does not have this disadvantage,
s Wegen des außerordentlich kurzen Nachleuchtens des Yttriumsilikats ist es nicht möglich, irgendeinem bekannten rot-emittierenden Leuchtstoff als Mischkomponente zuzusetzen und einen Leuchtschirm aus dieser Mischung herzustellen, weil bei schnellbewegten Gegenständen im Fernsehbild ein Nachziehen beobachtbar sein würde; z. B. würde bei zu lang nachleuchtender Rotkomponente an bewegten Kanten ein roter Schweif erscheinen. Es sind bereits Yttriurosilikat-Leuchtstoffe zur Umwandlung ultravioletters Because of the extremely short afterglow of the yttrium silicate, it is not possible for any to add known red-emitting phosphor as a mixed component and a fluorescent screen to produce this mixture, because fast moving objects can be observed in the television picture would be; z. B. with too long afterglow red component on moving edges red tail appear. They are already yttriurosilicate phosphors to convert ultraviolet
*5 Strahlung in sichtbares Licht bekannt, bei weichen Yttrium oder Mischungen mit Lanthan, ferner Terbium, Erbium oder Europium verwendet wurden. Zum anderen ist es bekannt, bei Leucutschinnen für Lichtpunktabtastgeräte mit 3wertigem Cer aktiviertes* 5 known radiation in visible light when soft Yttrium or mixtures with lanthanum, also terbium, erbium or europium were used. On the other hand, it is known that Leucutschinnen for light point scanning devices with trivalent cerium activated
ao Yttriumaluminat zu verwenden, das z. B. aus 16,8 g Yttrium-Oxyd, 20 g Aluminium-Oxyd und 0,49 g Cer-Oxyd hergestellt ist. Für Lichtpunktabtastung ist auch mit Cer aktiviertes Yttrium-Aluminat bekannt, dem zur Erzielung eines stärkeren Blauanteils mitao to use yttrium aluminate, the z. B. from 16.8 g Yttrium oxide, 20 g aluminum oxide and 0.49 g cerium oxide is produced. For light point scanning is also known with cerium activated yttrium aluminate, which is used to achieve a stronger blue component
»5 3wertigem Cer aktiviertes Calzium-Aluminiurn-Silikat zugesetzt ist.»5 trivalent cerium activated calcium-aluminum-silicate is added.
Das Leuchtstoff gemisch für Abtaströhren, das mit Cer aktiviertes Yttrium-Aluminat enthält, enthält erfindungsgemäß außerdem ein mit 10~3 bis 10"5 Ge-The phosphor mixture for scanning tubes, which contains cerium-activated yttrium aluminate, according to the invention also contains a 10 -3 to 10 " 5 Ge
3» wichtsprozent Terbium aktiviertes Yttriumsilikat, dessen Anteil am Leuchtstoffgemisch 40 bis 80 Gewichtsprozent vorzugsweise 20 bis 30 Gewichtsprozent beträgt. Das Yttriumaluminat ist vorzugsweise Orthoaluminat (Y2Al2O6).3% by weight of terbium activated yttrium silicate, the proportion of which in the phosphor mixture is 40 to 80 percent by weight, preferably 20 to 30 percent by weight. The yttrium aluminate is preferably orthoaluminate (Y 2 Al 2 O 6 ).
Die Rotemission von Yttriumaluminat ist sehr kräftig, so daß ein Anteil von 20 bis 30 Gewichtsprozent ausreicht, um einen Mischleuchtstoff zu erhalten, der auch im Rotkanal eines Filmabtastgerätes ein Fernsehsignal zu gewinnen erlaubt, dessen Signal-Rauschverhältnis dem der anderen Kanäle entspricht.The red emission of yttrium aluminate is very strong, so that a proportion of 20 to 30 percent by weight is sufficient to obtain a mixed phosphor that also enters the red channel of a film scanner To win television signal allowed, whose signal-to-noise ratio corresponds to that of the other channels.
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 true DE2051099B2 (en) | 1974-06-12 |
| DE2051099C3 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 |
|---|---|
| DE2051099A1 (en) | 1972-04-20 |
| NL7114215A (en) | 1972-04-19 |
| DE2051099C3 (en) | 1975-01-23 |
| GB1342324A (en) | 1974-01-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) |