DE665838C - Process for the production of luminescent screens for Braun tubes using heat- or oxygen-sensitive luminous materials - Google Patents

Process for the production of luminescent screens for Braun tubes using heat- or oxygen-sensitive luminous materials

Info

Publication number
DE665838C
DE665838C DER86054D DER0086054D DE665838C DE 665838 C DE665838 C DE 665838C DE R86054 D DER86054 D DE R86054D DE R0086054 D DER0086054 D DE R0086054D DE 665838 C DE665838 C DE 665838C
Authority
DE
Germany
Prior art keywords
oxygen
production
sensitive
heat
sintering
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
Application number
DER86054D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Loewe Opta GmbH
Original Assignee
Loewe Opta GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Loewe Opta GmbH filed Critical Loewe Opta GmbH
Priority to DER86054D priority Critical patent/DE665838C/en
Application granted granted Critical
Publication of DE665838C publication Critical patent/DE665838C/en
Expired legal-status Critical Current

Links

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

Landscapes

  • Luminescent Compositions (AREA)

Description

Verfahren zur Herstellung von Leuchtschirmen für Braunsche Röhren unter Verwendung von Kitze- oder sauerstoffempfindlichen Leuchtmassen Die Erfindung bezieht sich auf ein Verfahren zur Herstellung von Leuchtschirmen für Braunsche Röhren, bei welchem zur Erzeugung des Leuchtschirmes Kitze- oder sauerstoffempfindliche Leuchtmassen verwendet werden.Process for the production of fluorescent screens for Braun tubes using fawn- or oxygen-sensitive luminescent materials. The invention relates to a method of making luminous screens for Braunsche Tubes, in which to produce the luminescent screen, fawn- or oxygen-sensitive Luminous masses are used.

Es ist bereits bekannt, derartige Leuchtmassen zu verwenden und diese zwecks Erzeugung des Leuchtschirmes durch Auf stäuben bzw. Aufspritzen ohne Bindemittel auf eine aus möglichst weichem, nicht zu hoch schmelzendem Glas bestehende Unterlage aufzubringen und einzuschmelzen.It is already known to use such luminous masses and these for the purpose of generating the luminescent screen by dusting or spraying without a binder on a base made of the softest possible glass that does not melt too high apply and melt down.

Bei diesen bekannten Verfahren wurden die Substanzen dadurch vor oxydierenden Einflüssen geschützt, daß das Rohrinnere während es Einbrennvorganges mit einem neutralen oder reduzierenden Gas gefüllt wurde.In these known methods, the substances were thereby from oxidizing Protected against influences that the inside of the pipe during the burn-in process with a neutral or reducing gas has been filled.

Gemäß der vorliegenden Erfindung werden in an sich bekannter Weise zur Herstellung von Leuchtschirmen Kitze- oder sauerstoffempfindliche Leuchtmassen verwendet und auf einer- aus möglichst weichem, nicht zu hoch schmelzendem Glas bestehenden Unterlage durch Einsintern befestigt.According to the present invention, in a manner known per se for the production of luminescent screens, fawn or oxygen-sensitive luminescent materials used and on a glass that is as soft as possible, not too high a melting point existing base attached by sintering.

Die Einsinterung erfolgt erfindungsgemäß unmittelbar durch Berührung mit einer neutralen oder schwach reduzierenden Flamme. Das erfindungsgemäße Verfahren ermöglicht es, umständliche Schutzmaßnahmen zu vermeiden und den Einsinterungsvorgang wesentlich genauer verfolgen und regeln zu können.According to the invention, sintering takes place directly by contact with a neutral or weakly reducing flame. The inventive method makes it possible to avoid cumbersome protective measures and the sintering process to be able to follow and regulate much more precisely.

Es ist zweckmäßig, die Erhitzung nicht länger fortzusetzen, als es zur Festsinterununbedingt notwendig ist.It is advisable not to continue heating longer than it does is absolutely necessary for the fixed winter.

Es hat sich herausgestellt, daß die Festsinterung besser gelingt und die lumineszierende Substanz in ihrer Leuchtkraft fast gar nicht geschwächt wird, wenn Gemische verschiedener Sulfide, wie z. B. Zinksulfid, Calciumsulfid und Cadmiumsulfid, oder Gemische von Sulfiden mit Oxyden und"oder Wolframaten verwendet werden.It has been found that the solid sintering works better and the luminosity of the luminescent substance is hardly weakened at all, when mixtures of different sulfides, such as. B. zinc sulfide, calcium sulfide and cadmium sulfide, or mixtures of sulfides with oxides and "or tungstates can be used.

Claims (4)

PA TENTANSPRÜCIIE i. Verfahren zur Herstellung von Leuchtschirmen für Braunsche Röhren unter Verwendung von Kitze- oder sauerstoffe")findlichen Leuchtmassen, wobei letztere beispielsweise durch Aufstäuben bzw. Aufspritzen ohne Bindemittel auf eine aus möglichst weichem, nicht zu hoch schmelzendem Glas bestehende Unterlage aufgebracht und eingeschmolzen wird, dadurch gekennzeichnet, daß die Einsinterung unmittelbar durch Berührung mit einer neutralen oder schwach reduzierenden Flamme erfolgt. PA TENTANSPRÜCIIE i. Process for the production of luminous screens for Braun tubes using fawn or oxygen ") sensitive luminous masses, the latter, for example, by dusting or spraying on without a binder on a base made of the softest possible glass that does not melt too high is applied and melted, characterized in that the sintering right away by contact with a neutral or weakly reducing flame. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, däß zum Einsintern eine neutrale oder schwach reduziereri(le;, Leuchtgasflamme verwendet wird. 2. Method according to claim i, characterized in that a neutral one for sintering or weakly reducing gas flame is used. 3. Verfahren nach Anspruch i und 2, dadurch gekennzeichnet, daß als lumineszierende Substanz Sulfide und ?oder Geinische von Sulfiden mit Oxyden, Wolframaten u. dgl. verwendet werden. 3. Procedure according to Claims 1 and 2, characterized in that sulfides are used as the luminescent substance and mixtures of sulfides with oxides, tungstates and the like can be used. 4. Braunsche Röhre mit einem nach einem oder mehreren der Ansprüche i bis 3 hergestellten festgesinterten Leuchtschirm aus einer lumineszierenden Substanz, welche Kitze- und,'oder sauerstoffempfindliche Bestandteile enthält.4. Braun tube with one according to one or more of claims i to 3 produced sintered fluorescent screen made of a luminescent substance, which and, 'or contains oxygen-sensitive ingredients.
DER86054D 1932-09-28 1932-09-28 Process for the production of luminescent screens for Braun tubes using heat- or oxygen-sensitive luminous materials Expired DE665838C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER86054D DE665838C (en) 1932-09-28 1932-09-28 Process for the production of luminescent screens for Braun tubes using heat- or oxygen-sensitive luminous materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER86054D DE665838C (en) 1932-09-28 1932-09-28 Process for the production of luminescent screens for Braun tubes using heat- or oxygen-sensitive luminous materials

Publications (1)

Publication Number Publication Date
DE665838C true DE665838C (en) 1938-10-05

Family

ID=7417475

Family Applications (1)

Application Number Title Priority Date Filing Date
DER86054D Expired DE665838C (en) 1932-09-28 1932-09-28 Process for the production of luminescent screens for Braun tubes using heat- or oxygen-sensitive luminous materials

Country Status (1)

Country Link
DE (1) DE665838C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1058095B (en) * 1956-01-04 1959-05-27 Philips Nv Method of making a television pickup tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1058095B (en) * 1956-01-04 1959-05-27 Philips Nv Method of making a television pickup tube

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