DE939162C - Process for applying phosphors to the inner wall of discharge vessels - Google Patents

Process for applying phosphors to the inner wall of discharge vessels

Info

Publication number
DE939162C
DE939162C DEA12778A DEA0012778A DE939162C DE 939162 C DE939162 C DE 939162C DE A12778 A DEA12778 A DE A12778A DE A0012778 A DEA0012778 A DE A0012778A DE 939162 C DE939162 C DE 939162C
Authority
DE
Germany
Prior art keywords
wall
discharge vessels
applying phosphors
vessel wall
abradable
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
DEA12778A
Other languages
German (de)
Inventor
Wilhelm Dipl-Chem Weber
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEA12778A priority Critical patent/DE939162C/en
Application granted granted Critical
Publication of DE939162C publication Critical patent/DE939162C/en
Expired 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
    • 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
    • H01J9/221—Applying luminescent coatings in continuous layers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Description

Verfahren zum Aufbringen von Leuchtstoffen auf die Innenwand von Entladungsgefäßen Die Erfindung betrifft ein Verfahren zum Aufbring-en von Leuchtstoffen auf die Innenwand von Entladungsgefäßen, z. B. Leuchtstoff- und Kathodenstrahlröhren. Die bisher verwendeten Verfahren bestanden darin, daß man die Wände mit Phosphorsäure überzog, diese vorzugsweise mit Füllkörpern, z. B. Glasperlen, gleichmäßig auf der Wand verteilte und dann den Leuchtstoff einpuderte. Weiberhin waren auch Verfahren im Gebrauch, bei denen man den Leuchtstoff in einem organischen Bindemittel suspendierte und ihn durch Schlämmen auf die Wand brachte.Process for applying phosphors to the inner wall of discharge vessels The invention relates to a method for applying phosphors to the inner wall of discharge vessels, e.g. B. fluorescent and cathode ray tubes. The ones used so far Methods have been to coat the walls with phosphoric acid, preferably this with packing, e.g. B. glass beads, evenly distributed on the wall and then the Powdered fluorescent. Women were also using procedures in which one suspended the phosphor in an organic binder and slurried it brought on the wall.

Die Nachteile der bekannten Verfahren liegen darin, daß bei dem zuerst angeführten Verfahren Füllkörper benutzt werden müssen, die unter Umständen Verunreinigungen in das Gefäß hereinbringen können. Außerdem können verschiedene Leuchtstoffe auch von der Phosphorsäure angegriffen werden, was zu Verfärbungen oder Verminderung ihrer Leuchtkraft führt. Die Nachteile des zweiten Verfahrens bestehen darin, daß die organischen Stoffe nicht immer vollständig beim Ausreizen des Gefäßes verbrennen und es so zur Ausscheidung von Kohleteilchen führen kann.The disadvantages of the known methods are that in the first The specified procedure fillers must be used, which may contain impurities can bring into the vessel. You can also use different phosphors too can be attacked by the phosphoric acid, causing discoloration or diminution their luminosity leads. The disadvantages of the second method are that the organic substances do not always burn completely when the vessel is exhausted and it can lead to the precipitation of coal particles.

Diese Nachteile werden durch die Erfindung vermieden. Sie besteht darin, daß als Bindemittel feste, jedoch weiche, leicht abreibbare Stoffe, z. B. aus hochpolymerisierten Kieselsäureestern oder Silikonen bestehend, in kleinstöckiger Form verwendet werden, die beim Schütteln in der Röhre ab-rollen und deren auf der Glaswand zurückbleibende Spuren genügend Haftfähigkeit für 4len Leuchtstoff besitzen. Diese Stoffe werden zweckmäßig in Form kleiner Kugeln od.,clgl. verwendet, die sich in das Entladungsrohr bequem einfüllen und darin schütteln lassen. Der durch die Berührung mit der Gefäßwand- durch Abrieb der Körperchen erzeugte Film -kann je nach Bedarf in seiner Klebrigkeit verbessert werden, wenn man ihn gemäß der Erfindung mit bestimmten Dämpfen, z. B. Lösungsmitteldämpfen, nachbehandelt. Durch Wahl des Lösungsmittels, der Konzentration und der Behandlungsdauer kann die Viskosität und Klebrigkeit des Films in weiten Grenzen variiert werden.These disadvantages are avoided by the invention. she consists that as a binder solid, but soft, easily rubbed off substances such. B. consisting of highly polymerized silicic acid esters or silicones, in small-scale Form that roll off in the tube when shaken and the traces of which remain on the glass wall have sufficient adhesion for 4len phosphor own. These substances are expediently in the form of small balls or, clgl. used, which can be easily poured into the discharge tube and shaken in it. Of the film produced by contact with the vessel wall by abrasion of the corpuscles -can be improved in its stickiness as required if it is used accordingly of the invention with certain vapors, e.g. B. solvent vapors, aftertreated. By choosing the solvent, the concentration and the duration of treatment, the The viscosity and stickiness of the film can be varied within wide limits.

Claims (3)

PATENTANSPRÜCHE: i. Verfahren zum Aufbringen von Leuchtstoffen auf die Wand von Gas,entladungsgefäßen, z. B. Leuchtstoff- oder Kathodenstrahlröhren, unter Verwendung eines Bindemittels, dadurch gekennzeichnet, daß als Bindemittel für den einzubringenden Leuchtstoff feste, jedoch weiche, abreibbare Stoffe, z. B. hochpolymerisierte Kieselsäureester oder Silikone, in kleinstückiger Form verwendet werden, die beim Schütteln in der Röhre abrollen und auf der Gefäßwand Spuren genügender Haftfähigkeit für den Leuchtstoff hinterlassen. PATENT CLAIMS: i. Method for applying phosphors to the wall of gas, discharge vessels, e.g. B. fluorescent or cathode ray tubes, using a binder, characterized in that solid, but soft, abradable substances such. B. highly polymerized silicic acid esters or silicones are used in small pieces, which roll when shaken in the tube and leave traces of sufficient adhesion for the phosphor on the vessel wall. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß, die abreibbaren Stoffe als kleine kugelförmige Körper zur Verwendung gelangen. 2. The method according to claim i, characterized characterized in that, the abradable materials as small spherical bodies for use reach. 3. Verfahren nach den Ansprüchen i und 2, dadurch gekennzeichnet, d.aß zur Beeinflussung der Viskosität und Klebrigkeit des auf der Gefäßwand erzeugten Films eine Nachbehandlung mit Dämpfen von Lösungsmitteln stattfindet. Angezogene Druckschriften: Deutsche Patentschrift Nr. 678 1io; USA.-Patentschriften Nr. 2 329 632, 2 402 900, 2 407 1t(.6.3. The method according to claims i and 2, characterized in that d.aß to influence the viscosity and stickiness of the generated on the vessel wall Film an aftertreatment with vapors from solvents takes place. Dressed Publications: German Patent No. 678 1io; U.S. Patent No. 2,329 632, 2 402 900, 2 407 1t (.6.
DEA12778A 1951-01-18 1951-01-18 Process for applying phosphors to the inner wall of discharge vessels Expired DE939162C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA12778A DE939162C (en) 1951-01-18 1951-01-18 Process for applying phosphors to the inner wall of discharge vessels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA12778A DE939162C (en) 1951-01-18 1951-01-18 Process for applying phosphors to the inner wall of discharge vessels

Publications (1)

Publication Number Publication Date
DE939162C true DE939162C (en) 1956-02-16

Family

ID=6922623

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA12778A Expired DE939162C (en) 1951-01-18 1951-01-18 Process for applying phosphors to the inner wall of discharge vessels

Country Status (1)

Country Link
DE (1) DE939162C (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE678110C (en) * 1936-08-27 1939-07-08 Auguste Harry Brackensey Process for applying a luminescent layer to the inner wall of electric discharge lamps
US2329632A (en) * 1938-12-19 1943-09-14 Jr Charles P Marsden Method of coating glass
US2402900A (en) * 1944-01-15 1946-06-25 Gen Electric Liquid settling process
US2407146A (en) * 1943-02-26 1946-09-03 Rca Corp Method of coating surfaces with powder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE678110C (en) * 1936-08-27 1939-07-08 Auguste Harry Brackensey Process for applying a luminescent layer to the inner wall of electric discharge lamps
US2329632A (en) * 1938-12-19 1943-09-14 Jr Charles P Marsden Method of coating glass
US2407146A (en) * 1943-02-26 1946-09-03 Rca Corp Method of coating surfaces with powder
US2402900A (en) * 1944-01-15 1946-06-25 Gen Electric Liquid settling process

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