WO1991004568A1 - Tube cathodique couleur - Google Patents

Tube cathodique couleur Download PDF

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Publication number
WO1991004568A1
WO1991004568A1 PCT/JP1990/001218 JP9001218W WO9104568A1 WO 1991004568 A1 WO1991004568 A1 WO 1991004568A1 JP 9001218 W JP9001218 W JP 9001218W WO 9104568 A1 WO9104568 A1 WO 9104568A1
Authority
WO
WIPO (PCT)
Prior art keywords
phosphor
layer
light
blue
ray tube
Prior art date
Application number
PCT/JP1990/001218
Other languages
English (en)
Japanese (ja)
Inventor
Norihisa Osaka
Yukihiro Ikegami
Original Assignee
Mitsubishi Rayon Co., Ltd.
Miyota Co., 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
Priority claimed from JP11148289U external-priority patent/JPH0350744U/ja
Priority claimed from JP26938889A external-priority patent/JPH03133031A/ja
Application filed by Mitsubishi Rayon Co., Ltd., Miyota Co., Ltd. filed Critical Mitsubishi Rayon Co., Ltd.
Publication of WO1991004568A1 publication Critical patent/WO1991004568A1/fr
Priority to KR1019910700505A priority Critical patent/KR920702007A/ko

Links

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
    • 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
    • H01J29/325—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 with adjacent lines

Definitions

  • the present invention relates to a color cathode ray tube, and more particularly to a color cathode ray tube, which has been increasingly required recently, which is suitable for realizing high precision. It is a thing. Background art
  • the phosphor film on the panel in front of the cathode ray tube can make the brightness more efficient than the dot pattern, and the electron beam can excite each phosphor of each emission color accurately.
  • the main strategy is to adopt a stripe that can be developed.
  • the strobe pattern is composed of a repeating red light-emitting phosphor film, green light-emitting phosphor film, and blue light-emitting phosphor film, and a carbon layer between the light-emitting phosphor films. It is composed of a non-light-emitting material film.
  • a stripe ⁇ pattern is formed by a slurry method, a dusting method, and a photo-adhesion method using an exposure technique.
  • Other screens using printing technology There is a printing method. Among them, the slurry method is used as the most representative method.
  • a liquid called a slurry in which a phosphor is dispersed in a mixture of polyvinyl alcohol and bichromate is used as a panel. Then, it is passed through an exposure mask, such as a shadow mask, to cure only the necessary parts by ultraviolet irradiation, and fix the phosphor. Unnecessary parts are washed away with warm pure water to form a phosphor film pattern. This is repeated for other light-emitting phosphors and bonbons to form a stripe-patterned phosphor film.
  • each luminescent color phosphor paste for printing is printed directly or indirectly on a panel, and a predetermined phosphor is fixed at a predetermined place. After that, the binder-resin component in the paste is fired to form a strip-battered phosphor film.
  • a cathode ray tube for power lines is manufactured by combining a panel with this phosphor film with a funnel and an electron gun.
  • the phosphor when exposing a thick film containing a phosphor such as a slurry solution applied to the panel surface, the phosphor is exposed to ultraviolet rays. Irregular reflection occurs, and on the entrance side of the ultraviolet light to this thick film and in the thick film, the cross-sectional area to be irradiated is wider in the latter, making it difficult to adjust the stripe width. However, the linearity is also poor, which is not good.
  • Screen printing methods using printing technology mainly use stainless steel screens; ⁇ , in general, stainless steel screens.
  • the stripe has a minimum stripe width of 0.1 mm, and is used for the purpose of realizing the miniaturization and high precision of the cathode ray tube. How can you do it? Disclosure of the invention
  • the present invention has been made on the basis of the above-mentioned background, and a purpose thereof is to provide a phosphor having a high-definition pattern required for high resolution. If a cathode ray tube for a power line with a membrane is not provided (f *
  • the gist of the present invention is at least a color cathode ray tube having a front panel, a funnel, and an electron gun.
  • Red light emitting phosphor layer Green light emitting phosphor layer, Blue light emitting phosphor
  • a fired cut piece obtained by cutting the laminate of the body layer and the non-light emitting layer into a thin film in the thickness direction is disposed on the panel.
  • the layer structure of the laminate is characterized in that a non-light emitting layer is interposed between the phosphor layers.
  • a composition in which red, green, and blue phosphors and carbon are each uniformly dispersed in a sinterable organic binder is used.
  • the resulting red, green, and blue phosphors and carbon layers are repeatedly laminated so that the phosphor layers sandwich the carbon layer, and have a predetermined thickness.
  • the used laminate can be used.
  • a film comprising a composition in which red, blue, and blue phosphors are each uniformly dispersed in an organic binder capable of being fired.
  • the red, blue, and blue phosphor-coated films obtained by coating and drying on the top are repeatedly laminated to form a laminate having a predetermined thickness. Wear.
  • a black stripe layer ⁇ and a non-light emitting layer are provided between the fired piece and the front panel. ⁇ is positioned opposite to
  • the exposure step such as the conventional photo-curing method is not used, and no equipment such as an exposure apparatus is required.
  • fine manufacturing can be performed at a low manufacturing cost. It is possible to obtain a cathode ray tube having a fluorescent screen. To facilitate the control of the thickness of each of the stacked phosphor layers, it is necessary to use a fluorescent screen. The width of a stripe such as a phosphor stripe or a non-emission stripe can be easily controlled from a fine thickness of about 10 to a relatively large thickness. In addition, it is possible to reduce the variation of the stripe width. It is possible to obtain a cathode ray tube with a light surface.
  • FIG. 1 is a perspective view, partly in section, showing an embodiment of a color cathode ray tube according to the present invention.
  • FIG. 2 is a schematic diagram showing a state where a phosphor layer is applied on a film in one embodiment of the present invention
  • FIG. 3 (A) is a schematic view showing a state in which phosphor layers and carbon layers are alternately laminated in one of the embodiments according to the present invention.
  • FIG. 3 (B) is a schematic diagram showing a state where the phosphor-coated film is repeatedly laminated in one of the embodiments according to the present invention.
  • Fig. 4 is an external view showing the appearance of cutting out the phosphor film from the laminate,
  • FIG. 5 is a plan view showing a state where the cut pieces are arranged on the panel.
  • FIG. 6 is a panel plan view showing a phosphor screen for solar cells obtained by firing the panel shown in FIG. 4,
  • FIG. 7 is a plan view of a panel showing a state in which a black 'stripe is formed on the panel.
  • FIG. 8 is a panel cross-sectional view showing a state where a cut piece is attached to a panel on which a black stripe is formed.
  • the color cathode ray tube according to the present invention has at least a front panel, a funnel and an electron gun, and a fluorescent film used as a component thereof.
  • a fired piece obtained by cutting a laminate of the phosphor layer and the non-light-emitting layer into a thin film, which is provided on the panel.
  • FIG. 1 is a perspective view, partly in section, of an embodiment of a color cathode ray tube according to the present invention.
  • a front panel 5, a panel 8, an electron gun 9, and a stripe formed on the surface of the panel 5 on the side of the electron gun 9 are shown.
  • the phosphor film B is covered with a metal back film 6 formed by aluminum vapor deposition, and the metal back film 6 is formed.
  • On top of the index phosphor The film 7 is formed.
  • the striped phosphor film B in this example has a red light-emitting phosphor layer 2, a green light-emitting phosphor layer 3, a blue light-emitting phosphor layer 4, and a non-light-emitting layer between the phosphor layers.
  • fans 8 and no. Glue 5 is glued with a flit screen 10 and an index signal take-out window 11 is provided in the fan / conne part. .
  • a detailed description of the phosphor film according to the present invention, that is, a fired cut piece, and an embodiment of a method for preparing a cut piece obtained by preparing a laminate and then cutting the laminate to obtain a cut piece will be given. Do.
  • a composition in which--'blue and blue phosphors and carbon are each uniformly dispersed in a sinterable organic binder are each uniformly dispersed in a sinterable organic binder.
  • the resulting red, blue, and blue phosphors and carbon layers are each repeatedly laminated in such a manner that the carbon layer is positioned between the phosphor layers, and There is a method of obtaining a laminate having a thickness of 1 mm.
  • a diluted organic solvent of an organic binder in which the phosphor is dispersed is mixed with a roll-copper or the like.
  • Coating method ⁇ Apply by screen printing, etc., remove by drying with solvent, and obtain the same result by repeating the same operation on the dried coating film. You can do this.
  • a known phosphor can be used in order to obtain a high-definition drive pattern.
  • a phosphor having a small particle size is used.
  • a blue Z n S: A g, etc. Force and a particle size of about 3 to 10 mm is used.
  • a resin excellent in sintering property can uniformly disperse the phosphor or bonfire, and the like. It is not particularly limited as long as a material having a large thickness can be obtained. The presence of sintering residue is not preferred because it causes black spots and significantly shortens the CRT life when producing CRT.
  • organic binder examples include, for example, a cellulose resin, a vinyl alcohol resin, and a (meth) acrylic resin.
  • (meta) acrylic resin is preferred from the viewpoint of the above-mentioned sinterability.
  • the carbon known ones can be used in the same manner as the above-mentioned phosphors. In order to obtain a high-definition drive pattern, a carbon having a small particle size is preferred. .
  • the bonbon for example, high-purity graphite or the like can be mentioned, and a particle diameter of about 0.3 to about I 0 / is used. .
  • each phosphor layer is screen-printed at a layer thickness of 20 a and the carbon layer at a layer thickness of 1 O / z.
  • the coating and drying were repeated to obtain a laminate.
  • FIG. 3 (A) shows a partial outline of a laminate obtained by the above embodiment.
  • the laminate A includes a red light-emitting phosphor layer 2, a carbon layer (non-light-emitting layer 1), a blue light-emitting phosphor layer 3, a carbon layer (non-light-emitting layer 1), and a blue light-emitting phosphor layer. 4.
  • the layers are repeatedly laminated in the order of carbon layer (non-light emitting layer 1).
  • this laminate is cut to a thickness of 0.02 mm in the thickness direction by using, for example, a microtome, a high-precision band saw, or the like.
  • a phosphor film having a thickness of about 10 to 60 is usually used.
  • Fig. 4 shows how the laminate A is cut in the thickness direction with a tom mouth to obtain a cut piece.
  • the obtained phosphor cut pieces have 220 triblets (three color phosphors are collectively referred to as one triblet).
  • a composition in which red, green, and blue phosphors are uniformly dispersed in a sinterable organic binder is applied to a film. This is dried to obtain red, blue, and blue phosphor-coated films, and the phosphor-coated films are repeatedly laminated in order to obtain a predetermined thickness. There is a mode of obtaining a laminate.
  • a composition in which the phosphor is dispersed in an organic binder is applied by a roll coater or the like. ⁇ Due to the screen printing method, etc. The process of coating on the film and removing the organic solvent by drying can be repeated.
  • FIG. 2 shows a state where the coating layer 13 of the phosphor composition is formed on the film 1.
  • a film having good sinterability such as a polyvinyl alcohol type or an acrylic type, is preferable.
  • an acrylic film is preferable since it has good balance force in terms of firing properties and flexibility.
  • the thickness of the film can be determined according to the desired layer thickness.
  • each phosphor layer is layered on an acrylic film having a layer thickness of 20 a and a layer thickness of 2 ⁇ / ⁇ . Lean printing is performed, and this coating and drying are repeated to obtain a laminate.
  • FIG. 3 ( ⁇ ) shows a partial outline of a laminate obtained by the above embodiment.
  • This laminate ⁇ comprises a red light-emitting phosphor layer 2, a film (non-light-emitting layer 1), a green light-emitting phosphor layer 3, a film (non-light-emitting layer 1), a blue light-emitting phosphor layer 4, The film (light-emitting layer 1) is repeatedly laminated in this order.
  • the obtained laminate is cut into a thin film in the thickness direction.
  • a cutting method at this time for example, there is a method of cutting using a microtome, a high-precision band source, etc.0
  • the thickness of the phosphor film is usually about 10 to 60 /. It can be changed appropriately according to the application. In the example of the second embodiment, the sheet is cut to a thickness of 20.
  • Fig. 4 shows how laminate A is cut in the thickness direction with a micrometer to obtain a cut piece.
  • the obtained phosphor fragment has 220 triplets (three phosphors are collectively referred to as one triplet).
  • the obtained phosphor film is bonded or crimped to a front panel for a 35 mm ⁇ 28 mm power line, for example, a cathode ray tube.
  • a water-soluble adhesive such as water glass or poly alcohol is applied on the front panel. Then, the phosphor film may be stuck, dried and fixed.
  • a phosphor film is placed on a glass substrate by a rubber opening so that no air bubbles remain between the substrate and the phosphor film. Press and fix o
  • Fig. 5 shows the red light-emitting phosphor layer 2, film (non-light-emitting layer 1), green light-emitting phosphor layer 3, film (non-light-emitting layer 1), and blue light-emitting fluorescent light on panel 5.
  • Body layer 4 film (non-light-emitting layer) The cut pieces formed in a stripe shape by repeating in the order of 1) are shown.
  • the cut pieces formed on the panel are fired to obtain a color phosphor surface.
  • Fig. 6 shows an example of the phosphor film of red phosphor 2, green phosphor 3, and blue phosphor 4 B.
  • a color phosphor film provided on the front panel 5 for the power color cathode ray tube.
  • the non-luminescent layer is interposed between the phosphor layers to prevent color bleeding at the boundary between red, green, and blue colors and to ensure separation of each color. In order to improve the contrast of the image reproduced in the Braun tube.
  • a black stripe layer may be laminated on the phosphor film.
  • the method for forming the black drive layer is not particularly limited, and a known method can be used.
  • a non-light-emitting and low light-transmitting material such as aluminum is formed by vapor deposition. You can do this.
  • the preferred material in this invention is an anolymium. This is a force that can be used even with carbon and graphite-In the case of force-bon, etc., individual particles condense and the linearity of the stripe deteriorates. It is a car.
  • aluminum is used as the vapor-deposited metal, the stripe width is 20 and the film thickness is 0.05 to 0.
  • FIG. 7 shows a state in which a black drive 12 is formed on the panel 5.
  • a black stripe layer is formed on the front panel, and then the black stripe layer is formed.
  • the phosphor film should be laminated on the black stripe so that the boundary between the black stripe and the red, green, and blue phosphor layers or the non-light-emitting layer would match. No.
  • FIG. 8 shows a state in which the phosphor film B is laminated on the panel 5 so that the non-light-emitting layer 1 and the black stripe layer 12 coincide with each other.
  • the panels obtained were assembled into the structure shown in Fig. 1 to produce a color cathode ray tube.
  • the obtained color cathode ray tube had a resolution of 220 TV in a 35 mm x 25 mm panel size.
  • the present invention is suitable for realizing a high-density color cathode ray tube, and is suitable for a color camera of a video camera. It can be applied.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

Le tube cathodique couleur décrit comprend au moins un panneau frontal, un pavillon en entonnoir et un canon à électrons. Un film luminescent est placé sur le panneau frontal. Le film luminescent est produit de la façon suivante. Des couches de phosphores émettant de la lumière rouge, émettant de la lumière verte et émettant de la lumière bleue sont disposées en strates répétitives avec interposition de couches non luminescentes. Le stratifié ainsi formé est coupé dans le sens de l'épaisseur en films et est cuit au four. On parvient ainsi à produire efficacement un tube à rayon s cathodiques comportant un écran luminescent couleur qui se caractérise par une très haute précision et une haute résolution et qui peut être adapté à des tubes à rayons cathodiques de petites dimensions.
PCT/JP1990/001218 1989-09-22 1990-09-21 Tube cathodique couleur WO1991004568A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910700505A KR920702007A (ko) 1989-09-22 1991-05-20 칼라용 음극선관

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP1/222482U 1989-09-22
JP11148289U JPH0350744U (fr) 1989-09-22 1989-09-22
JP1/269388 1989-10-17
JP26938889A JPH03133031A (ja) 1989-10-17 1989-10-17 カラー用陰極線管

Publications (1)

Publication Number Publication Date
WO1991004568A1 true WO1991004568A1 (fr) 1991-04-04

Family

ID=26450868

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1990/001218 WO1991004568A1 (fr) 1989-09-22 1990-09-21 Tube cathodique couleur

Country Status (4)

Country Link
EP (1) EP0445298A4 (fr)
KR (1) KR920702007A (fr)
CA (1) CA2042392A1 (fr)
WO (1) WO1991004568A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03122943A (ja) * 1989-10-06 1991-05-24 Mitsubishi Rayon Co Ltd カラー蛍光体面の製造方法
US5953379A (en) 1996-02-23 1999-09-14 Harris Corporation Current-controlled carrier tracking filter for improved spurious signal suppression
TW509960B (en) * 2000-04-04 2002-11-11 Matsushita Electric Ind Co Ltd Highly productive method of producing plasma display panel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5092751A (fr) * 1973-12-15 1975-07-24
JPS5431270A (en) * 1977-08-15 1979-03-08 Toshiba Corp Index-system color picture tube
JPS5533585B2 (fr) * 1975-07-24 1980-09-01

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH063707B2 (ja) * 1988-04-18 1994-01-12 三菱レイヨン株式会社 カラー蛍光体面の製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5092751A (fr) * 1973-12-15 1975-07-24
JPS5533585B2 (fr) * 1975-07-24 1980-09-01
JPS5431270A (en) * 1977-08-15 1979-03-08 Toshiba Corp Index-system color picture tube

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0445298A4 *

Also Published As

Publication number Publication date
EP0445298A4 (en) 1992-03-18
KR920702007A (ko) 1992-08-12
EP0445298A1 (fr) 1991-09-11
CA2042392A1 (fr) 1991-03-23

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