DE857107C - Fluorescent screen for cathode ray tubes - Google Patents

Fluorescent screen for cathode ray tubes

Info

Publication number
DE857107C
DE857107C DEC3112A DEC0003112A DE857107C DE 857107 C DE857107 C DE 857107C DE C3112 A DEC3112 A DE C3112A DE C0003112 A DEC0003112 A DE C0003112A DE 857107 C DE857107 C DE 857107C
Authority
DE
Germany
Prior art keywords
salt
luminescent screen
phosphoric acid
layer
acetone
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
DEC3112A
Other languages
German (de)
Inventor
Alexander Konstantino Denisoff
John Martin Sleeman Speirs
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.)
Cinema Television Ltd
Original Assignee
Cinema Television Ltd
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 Cinema Television Ltd filed Critical Cinema Television Ltd
Application granted granted Critical
Publication of DE857107C publication Critical patent/DE857107C/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Luminescent Compositions (AREA)

Description

Leuchtschirm für Kathodenstrahlröhren Die Erfindung bezieht sich auf Leuchtschirme und Verfahren zur Herstellung derselben und betrifft besonders Leuchtschirme mit einem verbesserten Bindemittel.Luminous screen for cathode ray tubes The invention relates to Luminous screens and methods of making the same, and particularly relates to luminous screens with an improved binder.

Erfindungsgemäß wird ein Leuchtschirm vorgeschlagen, der als Bindemittel ein Ammoniumsalz der Phosphorsäure enthält. Das Salz kann entweder einbasisch, zweibasisch oder dreibasisch sein, und es kann aus der Ortho-. Pyro- oder Metaphosphorsäure gebildet werden.According to the invention, a luminescent screen is proposed that acts as a binding agent contains an ammonium salt of phosphoric acid. The salt can either be monobasic or dibasic or tribasic, and it can be derived from the ortho-. Pyro- or metaphosphoric acid are formed.

Gemäß einem Merkmal der vorliegenden Erfindung wird ein Leuchtschirm hergestellt, indem man einen Träger mit einer Schicht ans einer \-erdüiititeil Lösung eifies Ammoniumsatzes der Phosphorsäure in einem geeigneten Lösungsmittel überzieht, Leuchtmaterial auf diese Schicht niederschlägt und durch Erwärmung trocknet.In accordance with one feature of the present invention, there is provided a phosphor screen prepared by placing a support with a layer of a partial solution eifies ammonium set of phosphoric acid in a suitable solvent, Luminous material precipitates on this layer and dries by heating.

Ein geeignetes Verfahren zur Heustellung eines 1-etiuhtschirmes gemäß vorliegender Erfindung besteht darin, ein Glas oder einen anderen geeigneten Träger mit einer verdünnten Lösung von Ammoniumphosplrat in Wasser und Aceton zu überspülen und die übersahüssi@ge Lösung@ablaufen zu lassen, so daß eine dünne Schicht zurückbleibt. Das Glas oder der entsprechende andere Träger wird kurze Zeit stehengelassen und dann ein Leuchtmaterial, z. B. Zinkcadmiumsulid, auf die dünne Schicht aufgebracht. Die Lösung wird anschließend durch Erhitzung verdampft.A suitable method for the production of a 1-etiuhtschirmes according to The present invention consists in a glass or other suitable support flush with a dilute solution of ammonium phosphate in water and acetone and to drain the excess liquid, leaving a thin layer. The glass or the corresponding other support is left to stand for a short time and then a luminous material, z. B. zinc cadmium sulide, on the thin layer upset. The solution is then evaporated by heating.

Es können natürlich auch andere Lösungsmittel als Wasser und Aceton und andere Leuchtmaterialien als Zinkca@dmiumsulid verwandt werden, ohne daß damit vom Wesen der Erfindung abgewichen wird.Solvents other than water and acetone can of course also be used and other luminous materials than zinc ca @ dmiumsulid can be used without doing so deviates from the essence of the invention.

Claims (1)

PATENTANSPRÜCHE: i. Leuchtschirm, dadurch gekennzeichnet, daß er als Bindemittel ein Ammoniumsalz der Phosphorsäure! enthält. ?. Leuchtschirm nach Anspruch i, dadurch gekennzeichnet, daß das Salz der Phosphorsäure einbasisdh, zweibasisch oder dreibasisch ist. 3. Leuchtschirm nach Anspruch i, dadurch gekennzeichnet, daß das Salz aus der Ortlio-. Pyro- oder Metal>hosl>horsäui-e gebildet ist. Verfahren zur Herstellung eines Leucht- schirmes nach Anspruch 1, z oder 3, dadurch gekennzeichnet, claß ein "Träger mit einer Schicht der vc,rdüri,nten l.östlng eines Ainrno- niumsalzes der Phosphorsäure iti eiiiein geeig- neten Lösungsmittel üherzogen \\-ird, claß Leuchtmaterial auf die Schicht niedergeschlagen und das Ganze durch Erwärmung getrocknet wird. j. Leuchtschirm nach :Anspruch t, dadurch gekennzeichnet, daß <las .cisung-smittel für d.;n Binder Wasser und Aceton enthält. 6. Verfahren nach Allspruch .4, dadurch ge- kennzeichnet, daß der T r'iger finit ein:°i- dunnen Schicht einer verd,iinnt(,n Lösung \ an Amino- ni-umphosphat in Wasser und Aceton ül)ei-zogeii wird.
PATENT CLAIMS: i. Luminescent screen, characterized in that it uses an ammonium salt of phosphoric acid as a binder! contains. ?. Luminescent screen according to claim i, characterized in that the salt of phosphoric acid is monobasic, i.e. dibasic or tribasic. 3. luminescent screen according to claim i, characterized characterized that the salt from the Ortlio-. Pyro- or Metal>hosl> horsäui-e is formed. Process for the production of a luminous Umbrella according to claim 1, z or 3, characterized marked, class a "carrier with a Layer of the vc, rdüri, nten l. To the left of an aurno- nium salt of phosphoric acid is a suitable neccessary solvents Luminous material deposited on the layer and the whole thing dried by heating will. j. Luminescent screen according to: Claim t, characterized marked that <las .cisung-smittel for d.; n Binder contains water and acetone. 6. Procedure according to Allspruch .4, thereby indicates that the tiger finite a: ° i- thin Layer of a dilute (, n solution \ of amino Ni-umphosphat in water and acetone ül) egg-drawneii will.
DEC3112A 1939-03-13 1950-10-03 Fluorescent screen for cathode ray tubes Expired DE857107C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB857107X 1939-03-13

Publications (1)

Publication Number Publication Date
DE857107C true DE857107C (en) 1952-11-27

Family

ID=10590642

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC3112A Expired DE857107C (en) 1939-03-13 1950-10-03 Fluorescent screen for cathode ray tubes

Country Status (1)

Country Link
DE (1) DE857107C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1132667B (en) * 1958-12-04 1962-07-05 Siemens Edison Swan Ltd Process for the production of a fluorescent screen for cathode ray tubes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1132667B (en) * 1958-12-04 1962-07-05 Siemens Edison Swan Ltd Process for the production of a fluorescent screen for cathode ray tubes

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