DE3429675A1 - Process for producing a luminescent screen - Google Patents
Process for producing a luminescent screenInfo
- Publication number
- DE3429675A1 DE3429675A1 DE19843429675 DE3429675A DE3429675A1 DE 3429675 A1 DE3429675 A1 DE 3429675A1 DE 19843429675 DE19843429675 DE 19843429675 DE 3429675 A DE3429675 A DE 3429675A DE 3429675 A1 DE3429675 A1 DE 3429675A1
- Authority
- DE
- Germany
- Prior art keywords
- producing
- luminescent screen
- luminescent
- suspension
- 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- Withdrawn
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
- H01J29/22—Luminescent screens characterised by the binder or adhesive for securing the luminescent material to its support, e.g. vessel
-
- 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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/016—Diazonium salts or compounds
- G03F7/0166—Diazonium salts or compounds characterised by the non-macromolecular additives
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
Description
Beschreibungdescription
Verfahren zum Herstellen eines Leuchtschirms Die vorliegende Erfindung betrifft ein Verfahren nach dem Oberbegriff des Patentanspruchs 1.Method of making a phosphor screen The present invention relates to a method according to the preamble of claim 1.
Es ist bekannt, Leuchtschirme für Schwarz-Weiß- oder Farbbildkathodenstrahlröhren nach sog. Photoprintverfahren herzustellen, wobei als Bindemittel Polyvinylalkohol oder Polyvinyli>yroiidon uiicl und als Sensibilisator ein cinI3ichromat oder eine Diazo-Verbindung verwendet werden. Zur Herstellung von gerasterten Leuchtschirmen, wie z. B. Farbbildleuchtschirmen, wird die Belichtung durch eine Schablone hindurch, z. B. durch eine Lochmaske hindurch, vorgenommen.It is known, fluorescent screens for black-and-white or color cathode ray tubes to be produced by the so-called photo printing process, with polyvinyl alcohol as the binding agent or Polyvinyli> yroiidon uiicl and as a sensitizer a cinI3ichromat or a diazo compound can be used. For the production of grid luminous screens, such as B. color fluorescent screens, the exposure is through a stencil, z. B. through a shadow mask made.
Für Kathodenstrahlröhren hoher Auflösung und hoher Schockfestigkeit, wie sie z B. in Flugzeugen gefordert werden, müssen bei der Leuchtschirmherstellung besondere Vorkehrungen getroffen werden, um diese Anforderungen zu erfüllen.For cathode ray tubes with high resolution and high shock resistance, as required in aircraft, for example, must be used in the manufacture of luminescent screens special precautions are taken to meet these requirements.
So sollen die Leuchtschirmschichten möglichst gleichmäßig, möglichst dünn, möglichst dicht und möglichst haftfest sein.The luminescent screen layers should be as uniform as possible, as far as possible be thin, as tight as possible and as adhesive as possible.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren der eingangs genannten Art so zu verbessern, daß Leuchtschirmschichten entstehen, die bei erhöhter Packungsdichte sehr gleichmäßig sind und eine verringerte Oberflächenrauhigkeit besitzen, ohne daß dadurch die Haftfestigkeit bei geringer Schichtdicke beeinträchtigt wird.The present invention is based on the object of a method of the type mentioned at the outset so that fluorescent screen layers are created, which are very uniform with increased packing density and a reduced surface roughness without impairing the adhesive strength in the case of a thin layer will.
Diese Aufgabe wird gemäß der Erfindung durch die im Kennzeichen des Patentanspruchs 1 angegebenen Merkmale gelöst Durch das Zusetzen der beschriebenen Säuren zur Leuchtstöffsuspension vor Aufbringen derselben auf die gläserne Frontscheibe einer Kathodenstrahlröhre wird die Packungsdichte des Leuchtschirms bei verbesserter Haftfestigkeit erheblich erhöht.This object is achieved according to the invention by the in the characterizing part of Claim 1 specified features solved by adding the described Acids for fluorescent suspension before applying them to the glass front pane a cathode ray tube, the packing density of the phosphor screen is improved with Significantly increased adhesive strength.
Es können nach diesem Verfahren auch auf Glasträgern mit sehr glatter, z. B. polierter Glasoberfläche äußerst dünne und glatte Leuchtstoffschichten aufgebracht werden.This process can also be used on glass substrates with very smooth, z. B. polished glass surface extremely thin and smooth phosphor layers applied will.
Mit der Amidosulfonsäure und/oder Acrylsäure wird ein pH-Wert von 1 bis 6, bevorzugt 2 bis 3 eingestellt.With the sulfamic acid and / or acrylic acid, a pH of 1 to 6, preferably 2 to 3, are set.
Bei einem bevorzugten Ausführungsbeispiel wurde einer wässerigen Leuchtstoffsuspension, die als Bindemittel mit einer Diazoniumverbindung sensibilisierten Polyvinylalkohol enthielt, Acrylsäure bis zu einem pH-Wert von 2 bis 3 zugesetzt. Diese Suspension wurde als dünne Schicht auf einen polierten Glasträger aufge- bracht und diese Schicht getrocknet und durch eine Schablone hindurch mit UV-Strahlung belichtet. Danach wurden die nicht belichteten und somit nicht gehärteten Schichtteile durch Spülen mit einem wässerigen Medium entfernt. gurück blieben äußerst feste Schichtelemente hoher Packungsdichte und glatter Oberflächenbeschaffenheit.In a preferred embodiment, an aqueous phosphor suspension, the polyvinyl alcohol sensitized as a binder with a diazonium compound Acrylic acid was added to a pH of 2 to 3. This suspension was applied as a thin layer on a polished glass slide brings and this layer dried and passed through a stencil with UV radiation exposed. Then the unexposed and thus not hardened parts of the layer were removed by rinsing with an aqueous medium. they remained extremely firm Layered elements with high packing density and smooth surface properties.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843429675 DE3429675A1 (en) | 1984-08-11 | 1984-08-11 | Process for producing a luminescent screen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843429675 DE3429675A1 (en) | 1984-08-11 | 1984-08-11 | Process for producing a luminescent screen |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3429675A1 true DE3429675A1 (en) | 1986-02-20 |
Family
ID=6242896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19843429675 Withdrawn DE3429675A1 (en) | 1984-08-11 | 1984-08-11 | Process for producing a luminescent screen |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3429675A1 (en) |
-
1984
- 1984-08-11 DE DE19843429675 patent/DE3429675A1/en not_active Withdrawn
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8120 | Willingness to grant licences paragraph 23 | ||
8139 | Disposal/non-payment of the annual fee |