DE3330642A1 - Method for manufacturing a luminescent screen - Google Patents

Method for manufacturing a luminescent screen

Info

Publication number
DE3330642A1
DE3330642A1 DE19833330642 DE3330642A DE3330642A1 DE 3330642 A1 DE3330642 A1 DE 3330642A1 DE 19833330642 DE19833330642 DE 19833330642 DE 3330642 A DE3330642 A DE 3330642A DE 3330642 A1 DE3330642 A1 DE 3330642A1
Authority
DE
Germany
Prior art keywords
luminescent screen
added
boron trioxide
phosphor
binder
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.)
Withdrawn
Application number
DE19833330642
Other languages
German (de)
Inventor
Kanagaratnam 7915 Thalfingen Anandasivam
Jürgen Geißer
Klaus Gerland
Rainer Kolbeck
Ulrich Kube
Hermann Dr. 7900 Ulm Widmann
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DE19833330642 priority Critical patent/DE3330642A1/en
Publication of DE3330642A1 publication Critical patent/DE3330642A1/en
Withdrawn legal-status Critical Current

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
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
    • 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
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
    • C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
    • 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
    • H01J29/22—Luminescent screens characterised by the binder or adhesive for securing the luminescent material to its support, e.g. vessel
    • H01J29/225—Luminescent screens characterised by the binder or adhesive for securing the luminescent material to its support, e.g. vessel photosensitive adhesive
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22—Applying luminescent coatings
    • H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
    • H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

In order to improve the adhesion of luminescent material on a glass support it is proposed to add boron trioxide to the suspension of luminescent material sensitised with a diazo compound.

Description

Licentia Patent-Verwaltungs-GmbH PTL-UL/Am/lh Theodor-Stern-Kai 1 UL 83/91Licentia Patent-Verwaltungs-GmbH PTL-UL / Am / lh Theodor-Stern-Kai 1 UL 83/91

D-6OOO Frankfurt 70D-6OOO Frankfurt 70

Beschreibungdescription Verfahren zum Herstellen eines LeuchtschirmsMethod for producing a fluorescent screen

Die vorliegende Erfindung betrifft ein Verfahren zum • Herstellen eines Leuchtschirms, bei dem eine, wenigstens ein Bindemittel einen Sensibilisator und den Leuchtstoff enthaltende wässerige Suspension schichtförmig auf eine glatte Oberfläche eines gläsernen Leuchtschirmträgers aufgebracht wird und diese Schicht zumindest in Teilbereichen hinsichtlich ihrer Auswaschbarkeit durch optischeThe present invention relates to a method for • producing a luminescent screen, in which one, at least a binder, a sensitizer and the phosphor-containing aqueous suspension in a layer on a smooth surface of a glass screen carrier is applied and this layer at least in partial areas with regard to their ability to be washed out by optical means

•10 Bestrahlung verändert wird.• 10 irradiation is changed.

Zur photomechanischen Herstellung von Leuchtschirmen ist es bereits bekannt, ein Polyvinyl-Bindemittel wie Polyvinylalkohol oder Polyvinylpyrrolidon zu verwenden und als Sensibilisator der Leuchtstoffsuspension eine Diazovarbindung zuzusetzen.For the photomechanical production of fluorescent screens it is already known to use a polyvinyl binder such as polyvinyl alcohol or polyvinylpyrrolidone and as Sensitizer of the fluorescent suspension a diazo bond to add.

- 4 - UL 83/91- 4 - UL 83/91

Für Leuchtschirme mit hohem Auflösungsvermögen hat es sich als vorteilhaft herausgestellt, die Trägeroberfläche für die Leuchtstoffschicht so zu bearbeiten, daß sie möglichst glatt ist, insbesondere sie zu polieren. Als nachteilig macht sich dabei bemerkbar, daß besondere Maßnahmen getroffen werden müssen, um eine genügende Haftung des oder der Leuchtstoffschichten auf dem Glasträger zu erreichen.For fluorescent screens with high resolution it has become found to be advantageous to process the support surface for the phosphor layer so that it is as possible is smooth, especially polishing them. A disadvantage here is that special measures are taken must be in order to achieve sufficient adhesion of the phosphor layer or layers on the glass substrate.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, das Leuchtschirm-Herstellungsverfahren so zu verbessern, daß auch bei glatten Trägeroberflächen eine genügende Haftung des Leuchtstoffs auf diesen Trägeroberflächen gewährleistet ist.The present invention has for its object to improve the phosphor screen manufacturing process so that Adequate adhesion even with smooth carrier surfaces of the phosphor on these carrier surfaces is guaranteed is.

Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß bei Verwendung eines mit einer Diazoverbindung sensibilisierten Polyvinyl-Bindemittels vor dem Aufbringen der Leuchtstoffsuspension dieser Bortrioxid zugesetzt wird.This object is achieved according to the invention in that when using a sensitized with a diazo compound Polyvinyl binder is added to this boron trioxide before the phosphor suspension is applied.

Das beschriebene Verfahren ermöglicht eine photomechanische Herstellung von Leuchtschirm en, deren Leuchtstoffschicht oder Schichtelemente besonders fest auf der polierten Glasoberfläche eines Leuchtschirmträgers haften. Es lassen sich dadurch Leuchtstoffschichtmuster, z.B. Punkte oder Linien mit sehr genauen und feinen Begrenzungslinien herstellen, was besonders für Röhren mit Farbleuchtschirmen von Bedeutung ist.The method described enables photomechanical production of phosphor screens and their phosphor layer or layer elements adhere particularly firmly to the polished glass surface of a fluorescent screen carrier. In this way, phosphor layer patterns, e.g. Create points or lines with very precise and fine boundary lines, which is especially true for tubes with Color fluorescent screens matter.

Ein weiterer Vorteil des erfindungsgemäßen Verfahrens besteht darin, daß die zuzusetzende Menge an Diazosensibilisator beträchtlich verringert werden kann, ohne daß dadurch die Belichtungszeit verlängert werden müßte. VonAnother advantage of the method according to the invention is that the amount of diazo sensitizer to be added can be reduced considerably without as a result, the exposure time would have to be extended. from

33305423330542

- 5 - UL 83/91- 5 - UL 83/91

Vorteil ist ferner, daß die Leuchtstoffdichte der Schichtelemente und damit die Helligkeit und Schärfe erhöht wird,Another advantage is that the phosphor density of the layer elements and thus the brightness and sharpness are increased,

Bei einem bevorzugten Ausführungsbeispiel der Erfindung wird das Bortrioxid in Form seiner wässrigen Lösung der Leuchtstoffsuspension zugesetzt bevor diese auf den Leuchtschirmträger als Schicht aufgebracht wird. Bevorzugte Polyvinyl-Bindemittel sind Polyvinylalkohol und/oder Polyvinylpyrrolidon.
10In a preferred exemplary embodiment of the invention, the boron trioxide is added to the phosphor suspension in the form of its aqueous solution before it is applied as a layer to the screen support. Preferred polyvinyl binders are polyvinyl alcohol and / or polyvinylpyrrolidone.
10

"■♦■"■ ♦ ■

Claims (4)

Licentia Patent-Verwaltungs-GmbH PTL-UL/Am/lh Theodor-Stern-Kai 1 UL 83/91Licentia Patent-Verwaltungs-GmbH PTL-UL / Am / lh Theodor-Stern-Kai 1 UL 83/91 D-6000 Frankfurt 70D-6000 Frankfurt 70 PatentansprücheClaims /l. Verfahren zum Herstellen eines Leuchtschirm s, bei dem eine, wenigstens ein Bindemittel, einen Sensibilisator und den Leuchtstoff enthaltende wässerige Suspension schichtförmig auf eine glatte Oberfläche eines gläsernen Leuchtschirmträgers aufgebracht wird und diese Schicht zumindest in Teilbereichen hinsichtlich ihrer Auswaschbarkeit durch optische Bestrahlung verändert wird, dadurch gekennzeichnet , daß bei Verwendung eines mit einer Diazoverbindung sensxbilisierten Polyvinyl-Bindemittels vor dem Aufbringen der Leuchtstoffsuspension dieser Bortrioxid zugesetzt wird./ l. A method for producing a luminescent screen, in which an aqueous suspension containing at least one binding agent, a sensitizer and the luminescent substance is applied in layers to a smooth surface of a glass luminescent screen carrier and this layer is changed at least in parts with regard to its washability by optical irradiation, characterized in that that one of these is added to boron trioxide when used with a diazo compound sensxbilisierten polyvinyl binder before application of the phosphor suspension. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Bortrioxid in Form seiner wässerigen Lösung zugesetzt wird.2. The method according to claim 1, characterized in that the boron trioxide is added in the form of its aqueous solution will. - 2 - ÜL 83/91- 2 - ÜL 83/91 3- Verfahren nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, daß als Bindemittel Polyvinylalkohol oder Polyvinylpyrrolidon verwendet wird.3- The method according to claim 1 or claim 2, characterized characterized in that polyvinyl alcohol or polyvinylpyrrolidone is used as the binder. 4. Verfahren nach einem der Ansprüche 1 bis 3> gekennzeichnet durch seine Anwendung bei der Herstellung von Leuchtschirmen für Kathodenstrahlröhren mit hohem Auflösungsvermögen. 4. The method according to any one of claims 1 to 3> characterized by its use in the manufacture of fluorescent screens for cathode ray tubes with high resolution. ORIGINAL INSPECTED C0PY ORIGINAL INSPECTED C0PY
DE19833330642 1983-08-25 1983-08-25 Method for manufacturing a luminescent screen Withdrawn DE3330642A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19833330642 DE3330642A1 (en) 1983-08-25 1983-08-25 Method for manufacturing a luminescent screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833330642 DE3330642A1 (en) 1983-08-25 1983-08-25 Method for manufacturing a luminescent screen

Publications (1)

Publication Number Publication Date
DE3330642A1 true DE3330642A1 (en) 1985-03-14

Family

ID=6207400

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19833330642 Withdrawn DE3330642A1 (en) 1983-08-25 1983-08-25 Method for manufacturing a luminescent screen

Country Status (1)

Country Link
DE (1) DE3330642A1 (en)

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