DE2834688A1 - Colour picture tube phosphor screen prodn. with colour filter layer - by masking, applying filter pigment coating and etching away mask and overlying areas - Google Patents
Colour picture tube phosphor screen prodn. with colour filter layer - by masking, applying filter pigment coating and etching away mask and overlying areasInfo
- Publication number
- DE2834688A1 DE2834688A1 DE19782834688 DE2834688A DE2834688A1 DE 2834688 A1 DE2834688 A1 DE 2834688A1 DE 19782834688 DE19782834688 DE 19782834688 DE 2834688 A DE2834688 A DE 2834688A DE 2834688 A1 DE2834688 A1 DE 2834688A1
- Authority
- DE
- Germany
- Prior art keywords
- layer
- mask
- colour
- filter
- elements
- 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- Withdrawn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
-
- 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
- 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
-
- 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
- H01J9/2278—Application of light absorbing material, e.g. between the luminescent areas
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (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 zum Herstellen eines Leuchtschirms für Farbbildkathodenstrahlröhren, bei dem zwischen den Leuchtstoffelementen wenigstens einer Emissionsfarbe des darüberliegenden Leuchtstoffelementes abgestimmtes, schichtförmiges Farbfilterelement in Photodrucktechnik aufgebracht wird.Method of making a phosphor screen The present invention relates to a method for producing a fluorescent screen for color cathode ray tubes, in the case of at least one emission color of the overlying one between the phosphor elements Luminous element matched, layered color filter element in photo printing technology is applied.
Die Herstellung von Farbleuchtschirmen für Farbbildkathodenstrahlröhren mit verbessertem Kontrast ist bekannt.The manufacture of fluorescent colored screens for color cathode ray tubes with improved contrast is known.
Hierbei wird der Kontrast dadurch gesteigert, daß man entweder die Leuchtstoffpunkte- bzw. Streifen mit einer schwarzen Schicht (Matrix) umrahmt, eingefärbte (pigmentierte) Leuchtstoffe einsetzt oder vor die Leuchtstoffe selektive Farbfilter vorschaltet.Here, the contrast is increased by either the Fluorescent dots or stripes framed with a black layer (matrix), colored (pigmented) phosphors or selective color filters in front of the phosphors upstream.
Die Herstellung von Leuchtschirmen mit zwischen Leuchtstoffelementen und Frontscheibe angebrachten Farbfilterelementen ist z.The manufacture of fluorescent screens with between fluorescent elements and front panel mounted color filter elements is z.
B. aus der US-PS 31 14 065 bekannt.B. from US-PS 31 14 065 known.
Das Fixieron der selcktiven Farbfilter ist sehr problematisch, und zwar besonders deshalb, weil die Pigmente die Eigenschaft habon, am der Oberfläche der Fromtschale se stark anzuhaften, daß sie bei dem machfolgemdon Entwicklungsprozo@ nicht mehr vollständig ontformt werdom könnon.The fixation of the selective color filters is very problematic, and especially because the pigments have the property of being on the surface the Fromtschale se strongly adhering, that they in the machfolgemdon development process @ werdom no longer fully informed.
Der Erfindung liogt die Aufgabo zugrunde, ein Vorfahron anzugeben, nach dem es möglich ist, auf unproblomatische Weise selcktive Farbfiltor auf der Innensoite der Fromtschale derart anzubrimgon, daß der Raum zwischon don Pigmentolomontom nach dem Entwicklumgsprozo@ pigmentfroi ist.The invention is based on the task of specifying an ancestor, after which it is possible to easily select a color filter on the The inner surface of the shell is to be attached in such a way that the space between the pigment olomontome after the development prozo @ pigmentfroi is.
Gemäß der Erfindung wird vorgeschlet on, daß zumächst auf die Fromtscheibe eine durch Lichtbostrahlumg wasserunlöslich gomachto Masko an dem Stollen amfgobracht wird, die vom dom Filtorelementom froigehalton wordon sell, daß dann eino das Filtorpigment enthaltondo wässorigo Ammoniumpolymothacrylat- oder Schollackscicht aufgobracht wird und daß dann die Maske mit der daraufliogomdem Filtorpigmentschicht durch Ätzen ontformt wird.According to the invention, it is recommended that first on the Fromtscheibe A gomachto Masko, insoluble in water by lightblasting, is attached to the tunnel amfgo will that from the dom Filtorelementom froigehalton wordon sell that then one of the Filtorpigment Containing aqueous ammonium polymothacrylate or Schollackscicht applied and that the mask with the filter pigment layer thereon is then etched is ontformed.
Der wesontliche Vorteil dieses Vorfahrons ist, daß eine Pigmontvorschmutzung der amdoron Pigmentstreifom nicht auftritt und daß die Zwischonräumo a@@lut pigmontfroi sind.The main advantage of this ancestor is that Pigmont pre-soiling the amdoron pigment streak does not occur and that the interstitial space a @@ lut pigmontfroi are.
Ein weitoror Vorteil liegtdarin, daß das Verfahren vor der eigontlichon Boschirmung mit Louchtstoffon soparat durchgeführt werden kann und womig aufwendig ist.Another advantage is that the process is prior to the test Bosch shielding with Louchtstoffon can be carried out separately and is very expensive is.
Es hat sich gezeigt, daß bei Anwendung von wässerigon Susponsionon aus Pigment, wasser und Ammoniumpolymothacrylat bzw.It has been shown that when using aqueous Susponsionon made of pigment, water and ammonium polymothacrylate or
Schellack sehr saubore Filtorschichten auf der Innonseite von Frontschalen angebracht werden könnon. Voraussetzung für das Erhalten pigmentfroier Zwischonräume ist, daß vor dem Bes@@chten mit der Pigmentsusponsion @in@ Schicht aus @in@r sensibilisierton Polyvinylalkohol (PVA), Golatimo, Polyvinylpyrrolidon (PVP) etc. angobracht wird, die von dem Ambringon des gewünsch- ten Pigment es in den Bereichen der beiden anderen Leuchtstoffe belichtet wird. Die belichteten PVA- oder Gelatine-Elemente lassen sich nach dem Überschichten mit einer wässerigen Pig mont-Methacrylat-Schicht durch Ätzen, z. B. H2O2, H2O2, 9 wässeriges Alkali (NaOH, KOH, NH3, Phosphate etc.) oder Hypohalogenit oder wässerige Perverbindungen (Perborate, Peroxidi sulfate, Percarbonate etc.) ohne weiteres entfernen, während die Pigment-Methacrylat-Schicht dabei nicht angegriffen wird. Der Verfahrensablauf soll am Beispiel der Fixierung eines Blaufilters näher beschrieben werden: 1. Aufbringen einer vorzugsweise mit Dichromat sensibilisierten PVA-Schicht.Shellac very clean filter layers on the inner side of the front shells can be attached. Prerequisite for maintaining pigment-free intermediate spaces is that before visiting @@ with the pigment suspension @ in @ layer of @ in @ r sensitized Polyvinyl alcohol (PVA), Golatimo, polyvinylpyrrolidone (PVP) etc. is applied, that of the Ambringon of the desired ten pigment it in the areas the other two phosphors is exposed. The exposed PVA or gelatin elements can be covered with an aqueous Pig mont methacrylate layer by etching, e.g. B. H2O2, H2O2, 9 aqueous alkali (NaOH, KOH, NH3, phosphates etc.) or hypohalite or aqueous per compounds (perborates, peroxidisulphates, Percarbonate etc.) easily remove while the pigment-methacrylate layer is not attacked. The procedure should be based on the example of fixation a blue filter are described in more detail: 1. Applying a preferably with Dichromate sensitized PVA layer.
2. Belichten der PVA-Schicht mit den Lampenstellungen für die Leuchtstoffe Grün und Rot.2. Exposure of the PVA layer with the lamp positions for the phosphors Green and red.
3. Entwickeln der PVA-Schicht, d. h. Entfernen der unbelichteten PVA-Schichtteile, das ist an den Stellen, an denen das amzubringende Blaupigment zu liegen kommt.3. Develop the PVA layer, d. H. Removal of the unexposed PVA layer parts, this is where the blue pigment to be applied comes to rest.
4, Aufbringen einer Schicht einer wässerigen Blaupigment-Ammoniumpolymethacrylat- bzw. Schellack-Suspension.4, application of a layer of an aqueous blue pigment ammonium polymethacrylate or shellac suspension.
5. Trocknen, 6. Ätzen mit einer alkalischen Peroxid-Lösung, wobei die lichtgehärteten PVA-Elemente (Stellungen Grün und Rot) unter mit den darüberliegenden Pigment-Schichtteilen abgelöst werden und die Pigment-Schichtteile an den Stellen, an denen später die blau emittierenden Leuchtstoffelemente aufgebracht werden, zurückbleiben.5. drying, 6. etching with an alkaline peroxide solution, whereby the light-cured PVA elements (positions green and red) below with the ones above Pigment layer parts are detached and the pigment layer parts at the points to which the blue-emitting phosphor elements are applied later remain.
Das Aufbringen des Retpigments erfelgt entspreshond den vorstehend beschriebenen Verfahrensablauf, wobei allerdings dem Aufbringen der Rotpigment-Ammoniumpolymethacrylat-Supension die zuvor aufgebrachte, mit Dichromat oder Chromat sensibilisierte PVA-Schicht in den Lampenstellungen Blau und Grün belichtet und entwickelt wird,The application of the ret pigment corresponds to the above described process sequence, although the application of the red pigment ammonium polymethacrylate suspension the previously applied, dichromate or chromate sensitized PVA layer in the lamp positions blue and green are exposed and developed,
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782834688 DE2834688A1 (en) | 1978-08-08 | 1978-08-08 | Colour picture tube phosphor screen prodn. with colour filter layer - by masking, applying filter pigment coating and etching away mask and overlying areas |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782834688 DE2834688A1 (en) | 1978-08-08 | 1978-08-08 | Colour picture tube phosphor screen prodn. with colour filter layer - by masking, applying filter pigment coating and etching away mask and overlying areas |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2834688A1 true DE2834688A1 (en) | 1980-02-21 |
Family
ID=6046486
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19782834688 Withdrawn DE2834688A1 (en) | 1978-08-08 | 1978-08-08 | Colour picture tube phosphor screen prodn. with colour filter layer - by masking, applying filter pigment coating and etching away mask and overlying areas |
Country Status (1)
Country | Link |
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DE (1) | DE2834688A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5108858A (en) * | 1990-04-12 | 1992-04-28 | Videocolor | Method for making a viewing screen structure for CRT |
-
1978
- 1978-08-08 DE DE19782834688 patent/DE2834688A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5108858A (en) * | 1990-04-12 | 1992-04-28 | Videocolor | Method for making a viewing screen structure for CRT |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OF | Willingness to grant licences before publication of examined application | ||
8139 | Disposal/non-payment of the annual fee |