DE2731826A1 - Colour TV CRT with phosphor pattern coated screen - uses filter material for phosphor pattern parts intended for emission of red and blue colours - Google Patents

Colour TV CRT with phosphor pattern coated screen - uses filter material for phosphor pattern parts intended for emission of red and blue colours

Info

Publication number
DE2731826A1
DE2731826A1 DE19772731826 DE2731826A DE2731826A1 DE 2731826 A1 DE2731826 A1 DE 2731826A1 DE 19772731826 DE19772731826 DE 19772731826 DE 2731826 A DE2731826 A DE 2731826A DE 2731826 A1 DE2731826 A1 DE 2731826A1
Authority
DE
Germany
Prior art keywords
filter material
phosphor layer
layer parts
ray tube
cathode ray
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.)
Granted
Application number
DE19772731826
Other languages
German (de)
Other versions
DE2731826C2 (en
Inventor
Wilhelm Dipl Phys Schwedes
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 DE19772731826 priority Critical patent/DE2731826A1/en
Publication of DE2731826A1 publication Critical patent/DE2731826A1/en
Application granted granted Critical
Publication of DE2731826C2 publication Critical patent/DE2731826C2/de
Granted legal-status Critical Current

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Classifications

    • 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
    • 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
    • H01J29/30—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines
    • H01J29/32—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines with adjacent dots or lines of different luminescent material, e.g. for colour television

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

The luminescent screen of the colour cathode-ray tube is coated with different phosphor parts, emitting in the red, blue and green shades. A colour filter material is allocated to two emission phospor parts, i.e. to the red and blue phosphor shades, while the green one remains without any filtering material. The used identical filtering material has the highest pass-band for the red shade, while having a high absorption for the green one. The filtering material may be applied as separate layers between the phospor parts and the tube face plate, or can be admixed to the phosphor particles. It is also possible to apply the filter material as a phosphor covering film.

Description

Beschreibung:Description:

Farbbildkathodenstrahlröhre mit Leuchtschirm Die vorliegende Erfindung betrifft eine Farbbildkathodenstrahlröhre mit Leuchtschirm, der ein Muster aus Leuchtstoffschichtteilen von drei unterschiedlichen Emissionsfarben aufweist und bei dem zumindest den Leuchtstoffschichtteilen einer Emissionsfarbe ein Farbfiltermaterial zugeordnet ist.Fluorescent screen color cathode ray tube The present invention relates to a color picture cathode ray tube with a phosphor screen having a pattern of phosphor layer parts of three different emission colors and in which at least the phosphor layer parts a color filter material is assigned to an emission color.

Bei Farbbildkathodenstrahlröhren ist es bekannt, den einzelnen Leuchtstoffelementen Farbfiltermaterial zuzuordnen (US-PS 3,308,326 und US-PS 3,114,065). Es ist weiter bekannt, daß die Zuordnung von Filtermaterial zu den einzelnen Leuchtstoffelementen zu einem gewissen Helligkeitsverlust führt.In the case of color cathode ray tubes, it is known that the individual phosphor elements Assign color filter material (U.S. Patent 3,308,326 and U.S. Patent 3,114,065). It is on known that the assignment of filter material to the individual phosphor elements leads to a certain loss of brightness.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine neuartige Farbbildkathodenstrahlröhre der eingangs genannten Art anzugeben, die farbige Leuchtschirmbilder zu liefern im Stande ist, die einen günstigen Kompromiß zwischen Helligkeitsverlust einerseits und Kontrastgewinn andererseits darstellen.The present invention is based on the object of a novel Color cathode ray tube of the type mentioned to indicate the colored luminescent screen images is able to deliver which is a favorable compromise between loss of brightness on the one hand and contrast gain on the other hand.

Gemäß der Erfindung wird vorgeschlagen, daß den Leuchtstoffschichtteilen zweier Emissionsfarben ein und dasselbe Filtermaterial zugeordnet ist.According to the invention it is proposed that the phosphor layer parts one and the same filter material is assigned to two emission colors.

Ein wesentlicher Vorteil der Erfindung besteht darin, daß die Herstellung durch Verwendung nur eines einzigen Filtermaterials ganz wesentlich vereinfacht wird. Zum anderen wird unter Berücksichtigung der Empfindlichkeit des menschlichen Auges durch das Farbfiltermaterial ein nur unwesentlich wahrnehmbarer Helligkeitsverlust bei eefall endem Kontrastgewinn erzielt.An essential advantage of the invention is that the production is very much simplified by using only a single filter material. On the other hand, taking into account the sensitivity of the human eye, the color filter material results in an only insignificantly perceptible loss of brightness eefall endem Contrast gain achieved.

Anhand der in den Fig. 1 und 2 dargestellten bevorzugten Ausführungsbeispiele wird die Erfindung nachfolgend näher erläutert.On the basis of the preferred exemplary embodiments shown in FIGS. 1 and 2 the invention is explained in more detail below.

bevorzugt Die beschriebene Anordnung ist/anwendbar bei Farbbildkathodenstrahlröhren mit drei in unterschiedlichen Emissionsfarben emittierenden Leuchtstoffen, insbesondere mit grün-, blau- und rotemittierenden Leuchtstoffen. Die Anordnung der einzelnen Leuchtstoffschichtteile ist bevorzugt nebeneinanderliegend auf der Frontschale der Röhre. Die einzelnen Leuchtstoffschichtteile können in Form von Punktrastern oder in Form von Streifenrastern aufgebracht sein. preferred The arrangement described is / applicable to color cathode ray tubes with three phosphors emitting in different emission colors, in particular with green, blue and red emitting phosphors. The arrangement of each Phosphor layer parts are preferably lying next to one another on the front shell of the Tube. The individual phosphor layer parts can be in the form of dot grids or be applied in the form of stripe grids.

Die Fig. 1 zeigt eine Anordnung, bei der das Farbfiltermaterial entweder den entsprechenden Leuchtstoffen zugemischt ist oder aber in Form einer Umhüllungsschicht der einzelnen Leuchtstoffkörner vorhanden ist. Auf der gläsernen Frontschale 1 befinden sich nebeneinanderliegend in Form von Streifen zyklisch aufeinanderfolgend die Leuchtstoffschichtteile G, B und R, d. h. grün, blau und rot. Gemäß der beschriebenen Anordnung ist nun den Leuchtstoffschichtelementen B und R jeweils das gleiche Farbfiltermaterial zugeordnet. Als Farbfiltermaterial kommt bevorzugt ein Farbpigment in Frage, dessen maximaler Durchlässigkeitsbereich im Bereich der Purpurfarbe liegt und das das grüne Umgebungslicht stark absorbiert, Ein geeignetes Purpurfarbpigment ist Kobaltborat.Fig. 1 shows an arrangement in which the color filter material either is mixed with the corresponding phosphors or in the form of a coating layer of the individual phosphor grains is present. Located on the glass front shell 1 lying next to one another in the form of strips cyclically one after the other, the phosphor layer parts G, B and R, d. H. green, blue and red. According to the arrangement described is now the phosphor layer elements B and R are each assigned the same color filter material. A color pigment is preferably used as the color filter material, its maximum Permeability range is in the range of the purple color and that the green ambient light highly absorbed, a suitable purple color pigment is cobalt borate.

In der Fig. 2 ist ein Ausführungsbeispiel dargestellt, bei den das Farbfilteriaterial in Fors von Schichtteilen 2 zwischen den Leuchtstoffschichtteilen und der gläsernen Frontschale 1 angebracht ist. Das Farbfiltermaterial ist als Schicht 2 bezeichnet,die sich jeweils unter zwei nebeneinanderliegenden Leuchtstoffschichtteilon B und R befindet. Die gieren Leuchtstoffschichtteile G sind direkt auf der gläsernen Frontschale 1 angeordnet.In Fig. 2, an embodiment is shown in which the Color filter material in the form of layer parts 2 between the phosphor layer parts and the glass front shell 1 is attached. The color filter material is as a layer 2 denotes, each of which is located under two adjacent phosphor layer parts B and R is located. The yawing phosphor layer parts G are directly on the glass Front shell 1 arranged.

Claims (8)

Patentansprüche: Farbbildkathodenstrahlröhre mit Leuchtschirm, der ein ter aus Leuchtstoffschichtteilen von drei unterschiedlichen Emissionsfarben aufweist und bei dem zumindest den Leuchtstoffschichtteilen einer Emissionsfarbe ein Farbfiltermaterial zugeordnet ist, dadurch gekennzeichnet, daß den Leuchtstoffschichtteilen zweier Emissionsfarben ein und dasselbe Filtermaterial zugeordnet ist.Claims: color cathode ray tube with fluorescent screen, the a ter made of phosphor layer parts of three different emission colors and in which at least the phosphor layer parts of an emission color a color filter material is assigned, characterized in that the phosphor layer parts one and the same filter material is assigned to two emission colors. 2. Farbbildkathodenstrahlröhre nach Anspruch 1, dadurch gekennzeichnet1 daß den Leuchtstoffschichtteilen der dritten Emissionsfarbe kein Filtermaterial zugeordnet ist.2. color cathode ray tube according to claim 1, characterized in 1 that the phosphor layer parts of the third emission color have no filter material assigned. 3. Farbbildkathodenstrahlröhre nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, daß grün-, blau- und rotemittierende Leuchtstoffschichtteile vorgesehen sind, und daß den Leuchtstoffschichtteilen roter und blauer Emissionsfarbe ein und dasselbe Filtermaterial zugeordnet ist.3. color cathode ray tube according to claim 1 or claim 2, characterized characterized in that green, blue and red emitting phosphor layer parts are provided and that the phosphor layer parts are red and blue emission colors and the same filter material is assigned. 4. Farbbildkathodenstrahlröhre nach Anspruch 3, dadurch gekennzeichnet, daß das Filtermaterial seine größte Durchlässigkeit im Purpur-Farbbereich und eine starke Absorption im grünen Spektralbereich aufweist.4. color cathode ray tube according to claim 3, characterized in that that the filter material has its greatest permeability in the purple color range and one has strong absorption in the green spectral range. 5. Farbbildkathodenstrahlröhre nach einem der Ansprüche 1 - 4, dadurch iekennzeichnet. daß die Leuchtstoffschichtteile neben- eixLerliegend auf dem Leuchtschirmträger der Röhre angeordnet sind.5. color cathode ray tube according to any one of claims 1 - 4, characterized ie. that the phosphor layer parts eixL are arranged lying on the screen support of the tube. 6. Farbbildkathodenstrahlröhre nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Filtermaterial in Form von Schichtteilen zwischen den Leuchtstoffschichtteilen und dem Leuchtschirmträger angeordnet ist.6. color cathode ray tube according to one of claims 1 to 5, characterized characterized in that the filter material is in the form of layer parts between the phosphor layer parts and the screen carrier is arranged. 7. Farbbildkathodenstrahlröhre nach einem der Ansprüche 1 - 5, dadurch gekennzeichnet, daß das Filtermaterial vermischt mit den Leuchtstoffpartikeln in den Leuchtstoffschichtteilen enthalten ist.7. color cathode ray tube according to any one of claims 1-5, characterized characterized in that the filter material is mixed with the phosphor particles in the phosphor layer parts is included. 8. Farbbildkathodenstrahlröhre nach einem der Ansprüche 1 - 6, dadurch gekennzeichnet, daß das Filtermaterial als eine die Leuchtstoffpartikel der entsprechenden Leuchtstoffschichtteile zumindest teilweise bedeckende Schicht angeordnet ist.8. color cathode ray tube according to any one of claims 1-6, characterized characterized in that the filter material as one of the phosphor particles of the corresponding Phosphor layer parts at least partially covering layer is arranged.
DE19772731826 1977-07-14 1977-07-14 Colour TV CRT with phosphor pattern coated screen - uses filter material for phosphor pattern parts intended for emission of red and blue colours Granted DE2731826A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19772731826 DE2731826A1 (en) 1977-07-14 1977-07-14 Colour TV CRT with phosphor pattern coated screen - uses filter material for phosphor pattern parts intended for emission of red and blue colours

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772731826 DE2731826A1 (en) 1977-07-14 1977-07-14 Colour TV CRT with phosphor pattern coated screen - uses filter material for phosphor pattern parts intended for emission of red and blue colours

Publications (2)

Publication Number Publication Date
DE2731826A1 true DE2731826A1 (en) 1979-01-25
DE2731826C2 DE2731826C2 (en) 1987-10-01

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Family Applications (1)

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DE19772731826 Granted DE2731826A1 (en) 1977-07-14 1977-07-14 Colour TV CRT with phosphor pattern coated screen - uses filter material for phosphor pattern parts intended for emission of red and blue colours

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998018148A1 (en) * 1996-10-17 1998-04-30 Philips Electronics N.V. Color display device having color-filter layers
EP1150326A1 (en) * 2000-04-26 2001-10-31 Philips Corporate Intellectual Property GmbH Color display panel with color filter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR886355A (en) * 1941-10-04 1943-10-13 Zeiss Ikon Ag fluorescent screen consisting of one or more fluorescent substances
US3114065A (en) * 1955-09-06 1963-12-10 Sam H Kaplan Color image reproducer
US3308326A (en) * 1966-05-19 1967-03-07 Zenith Radio Corp Color image reproducer having red phosphor combined with red-pass filter element
US3748515A (en) * 1972-04-03 1973-07-24 Zenith Radio Corp Color television picture tube with subtractive color filters
DE2442167A1 (en) * 1973-09-04 1975-03-06 Rca Corp IMAGE PLAYBACK DEVICE

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR886355A (en) * 1941-10-04 1943-10-13 Zeiss Ikon Ag fluorescent screen consisting of one or more fluorescent substances
US3114065A (en) * 1955-09-06 1963-12-10 Sam H Kaplan Color image reproducer
US3308326A (en) * 1966-05-19 1967-03-07 Zenith Radio Corp Color image reproducer having red phosphor combined with red-pass filter element
US3748515A (en) * 1972-04-03 1973-07-24 Zenith Radio Corp Color television picture tube with subtractive color filters
DE2442167A1 (en) * 1973-09-04 1975-03-06 Rca Corp IMAGE PLAYBACK DEVICE

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998018148A1 (en) * 1996-10-17 1998-04-30 Philips Electronics N.V. Color display device having color-filter layers
US5942848A (en) * 1996-10-17 1999-08-24 U.S. Philips Corporation Color display device with phosphor regions for emitting red, blue and green light through red-blue color-filler layers and apertures in a black-matrix layer
EP1150326A1 (en) * 2000-04-26 2001-10-31 Philips Corporate Intellectual Property GmbH Color display panel with color filter
US6756727B2 (en) * 2000-04-26 2004-06-29 Koninklijke Philips Electronics N.V. Color picture screen with color filter

Also Published As

Publication number Publication date
DE2731826C2 (en) 1987-10-01

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