FR2635610A1 - Cathode-ray tube device with multiple electron guns, in order to obtain flat cathode-ray tubes with square corners and especially of small thickness - Google Patents

Cathode-ray tube device with multiple electron guns, in order to obtain flat cathode-ray tubes with square corners and especially of small thickness Download PDF

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Publication number
FR2635610A1
FR2635610A1 FR8810937A FR8810937A FR2635610A1 FR 2635610 A1 FR2635610 A1 FR 2635610A1 FR 8810937 A FR8810937 A FR 8810937A FR 8810937 A FR8810937 A FR 8810937A FR 2635610 A1 FR2635610 A1 FR 2635610A1
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Prior art keywords
ray tube
cathode
electron guns
screen
cathode ray
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FR8810937A
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French (fr)
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Priority to FR8810937A priority Critical patent/FR2635610A1/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00Cathode ray tubes; Electron beam tubes
    • H01J31/08Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/12Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00Cathode ray tubes; Electron beam tubes
    • H01J31/08Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/20Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2231/00Cathode ray tubes or electron beam tubes
    • H01J2231/12CRTs having luminescent screens
    • H01J2231/125CRTs having luminescent screens with a plurality of electron guns within the tube envelope
    • H01J2231/1255CRTs having luminescent screens with a plurality of electron guns within the tube envelope two or more neck portions containing one or more guns

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Abstract

The invention relates to a device of the "cathode-ray tube" type, making it possible to obtain a large area screen without corrupting the image and to choose the ratio of horizontal width to height, whilst having a small thickness. In the same "tube" it includes plural electron guns each sweeping a fraction of the screen. This device allows a small depth of the cathode-ray tube by comparison with the horizontal width due to the numerous electron guns.

Description

La présente invention concèrne les tubes cathodiques, pour que leur écran puisse entre plus grand, plus plat, et ayant des angles vraiment droits, et surtout ayant une faible épaisseur. The present invention relates to cathode ray tubes, so that their screen can be larger, flatter, and having truly straight angles, and above all having a small thickness.

Un tube cathodique est tube sous vide à deux extrémités; l'une est l'écran qui est une surface plus ou moins plate fluorescente sur laquelle se forme l'image. L'autre extrémité est constituée d'un canon à électrons qui est un appareil producteur d'un faisceau intense d'élèctrons à grande vitesse qui est dirigé sur l'ecran fluorescent pour en produire une image par balayage. A cathode ray tube is a vacuum tube at two ends; one is the screen which is a more or less flat fluorescent surface on which the image is formed. The other end consists of an electron gun which is a device producing an intense beam of electrons at high speed which is directed on the fluorescent screen to produce an image by scanning it.

Les tubes cathodiques actuels ont un inconvinient majeur qui est leur profondeur, surtout ceux qui ont un grand écran. Ainsi un tube cathodique à une profondeur plus ou moins égale au côté horizontal de- -l'écran, ceci est du au tube cathodique équipé de son unique canon à électrons. Par exemple un écran d'une largeur horizontale de quarante centimètres aura une profondeur de quarante centimètres aussi (figure 1). The current cathode ray tubes have a major disadvantage which is their depth, especially those which have a large screen. Thus a cathode ray tube at a depth more or less equal to the horizontal side of the screen, this is due to the cathode ray tube equipped with its single electron gun. For example, a screen with a horizontal width of forty centimeters will also have a depth of forty centimeters (Figure 1).

Le dispositif selon l'invention permet de remedier à cet inconvénient. The device according to the invention overcomes this drawback.

Plutot que d'un tube cathodique, il en faudrait plusieurs, par exemple quatre; deux en haut, deux en bas, de telle sorte que l'écran initial soit divisé en quatre parties, nous aurions alors un "tube cathodique" à quatre canons .. électrons (trichrone pour le cas d'un téléviseur couleur1 par exemple.) balayant pour chaqu'un de ces quatres canons à électrons un quart de l'écran. Rather than a cathode ray tube, it would take several, for example four; two at the top, two at the bottom, so that the initial screen is divided into four parts, we would then have a "cathode ray tube" with four guns .. electrons (trichrone for the case of a color TV for example.) scanning for each of these four electron guns a quarter of the screen.

Donc l'ensemble des quatres canons à électrons couvrent toute la surface de l'écran.So all four electron guns cover the entire surface of the screen.

Selcn l'invention et pour le nombre de canons à électrons choisis, ici quatre (figure 2), nous avons deux fois moins de profondeur, donc deux fois moins de volume, ce qui nous donne vingt centimetres de profondeur; car chaque "tube cathodique" a vingt centimètres de profondeur. According to the invention and for the number of electron guns chosen, here four (Figure 2), we have half the depth, therefore half the volume, which gives us twenty centimeters of depth; because each "cathode ray tube" is twenty centimeters deep.

A noter que les côtés de chaque tube cathodique en contact avec un autre tube cathodique sont enlevés. Note that the sides of each cathode ray tube in contact with another cathode ray tube are removed.

Plus nous avons de canons à élèctrons dans le "tube cathodique plus le rapport largeur horizontale sur la profondeur est grand , plus l'écran est plat. The more electron guns we have in the cathode ray tube, the greater the horizontal width to depth ratio, the flatter the screen.

Une autre variante du meme écran de quarante centimètres mais avec seize canons à électrons dans le "tube cathodique", soit quatre rangés de quatre canons à electrons qui balaye chaqu'un une surface dont le coté horizontal est égal au quart de la largeur horizontale de l'écran ini tial, soit dix centimètres. Donc ce tube cathodique"n'aura que dix centi- mètres de profondeur. (figure 3)
Une autre variante du même écran de largeur horizontale de quarante centimètres sur une hauteur de trente centimètres, donc d'une diagonale de cinquante centimètres; avec deux canons à élèctrons dans le "tube cathodique".Nous plaçons les deux canons à élètrons paralellement de telle sorte que nous obtenons deux écrans de trente centimètres de largeur horizontale et de vingt centimètres de hauteur, les deux écrans placés verticalement
Ainsi pour la même surface nous avons un gain de dix centimètres, soit trente centimètres au lieu de quarante centimètres de profondeur. (figures 4,
Encouru une outre variante avec par exemple soixante dix canons à élèctrons dans le "tube cathodique". Disposés en sept rangés de dix canons à élèctrons placés paralellement.
Another variant of the same screen of forty centimeters but with sixteen electron guns in the "cathode ray tube", that is to say four rows of four electron guns which scans each surface whose horizontal side is equal to a quarter of the horizontal width of the initial screen, which is ten centimeters. So this cathode ray tube "will only be ten centimeters deep. (Figure 3)
Another variant of the same screen with a horizontal width of forty centimeters by a height of thirty centimeters, therefore with a diagonal of fifty centimeters; with two electron guns in the "cathode ray tube". We place the two electron guns in parallel so that we get two screens of thirty centimeters in horizontal width and twenty centimeters in height, the two screens placed vertically
So for the same surface we have a gain of ten centimeters, or thirty centimeters instead of forty centimeters in depth. (Figures 4,
Incurred another variant with for example seventy electron guns in the "cathode ray tube". Arranged in seven rows of ten electron guns placed in parallel.

Different des premiers exemples, cet écran est complètement plat, ainsi la surface balayée par chaque canon à élèctrons peut être un carré, pour plus de précision du faisceau élèctronique (pour la très haute definition de l'image, par exple).  Different from the first examples, this screen is completely flat, so the surface scanned by each electron gun can be a square, for more precision of the electron beam (for the very high definition of the image, for example).

Nous obtenons alors un écran de cent centimètres (un mètre) de largeur horizontale sur une hauteur de soixante dix centimètres pour une profondeur de dix centimètres. (figures 5)
Alors qu'un tube cathodique traditionnel nécessiterait aussi cent centimètres (un mètre) de profondeur.
We then obtain a screen of one hundred centimeters (one meter) in horizontal width on a height of seventy centimeters for a depth of ten centimeters. (figures 5)
Whereas a traditional cathode ray tube would also require a hundred centimeters (one meter) deep.

Nous avons pris pour faire cet écran soixante dix, soit sept sur dix canons o électrons pour obtenir les proportions traditionnelle de l'écran de téléviseur actuel , car la surface balayées par chaque canons à élètrons tron n'est plus un rectangle mais un carré de dix centimètres de côté. We took to make this screen seventy, that is to say seven out of ten electron guns to obtain the traditional proportions of the current television screen, because the surface swept by each electron guns tron is no longer a rectangle but a square of ten centimeters aside.

Mais nous aurions pu lui donner unie toute autre forme à cet écran. But we could have given it any other form on this screen.

Cette invention consèrve tout les avantages de la qualité des images des tubes cathodiques: réglage de la couleur, de la brillance, du contraste. Et surtout de nouveaux avantages comme: angle vraiment carrés,
écran plat, possibilité de changer le rapport largeur sur hauteur de l'écran sans altérer.la qualité des images.
This invention preserves all the advantages of the quality of the images of the cathode-ray tubes: adjustment of the color, the brightness, the contrast. And especially new advantages like: really square angle,
flat screen, possibility of changing the aspect ratio of the screen without altering the quality of the images.

A noter que la consomation d'élèctricité sera pratiquement équivalente à un
tube cathodique traditionnel de même surface d'écran.
Note that the consumption of electricity will be practically equivalent to a
traditional cathode ray tube with the same screen area.

Pour obtenir un écran couleur ou monochrome permanent il faudra monter les canons à élètrons correspondants. To obtain a permanent color or monochrome screen, it will be necessary to mount the corresponding electron guns.

Cette invention est destinée à tout ceux qui cherchent les avantages
de tel écran qui peut être très plat, donc discret;
salle de cinema, téléviseur, tableau de bord d'avion ou de vehicule,
tableau d'affichage, salle de controle, etc...
This invention is for anyone looking for the benefits
such a screen which can be very flat, therefore discreet;
cinema room, television, aircraft or vehicle dashboard,
bulletin board, control room, etc ...

Claims (5)

REVENDICATIONS 1) Dispositif du type "tube à rayons cathodiques", permettant d'obtenir un écran de grande surface sans altérer l'image et de choisir le rapport largeur horizontale sur la hauteur, tout en ayant une faible épaisseur, caractérisé en ce qu'il comporte dans le même "tube" plusieurs canons à électrons balayant chacun une fraction de l'écran.  1) Device of the "cathode ray tube" type, making it possible to obtain a large surface screen without altering the image and to choose the ratio horizontal width to height, while having a small thickness, characterized in that it has in the same "tube" several electron guns each scanning a fraction of the screen. 2) Dispositif selon la revendication 1 caractérisé par une faible profondeur du tube cathodique par rapport à la largeur horizontale dû aux nombreux canons à électrons. 2) Device according to claim 1 characterized by a shallow depth of the cathode ray tube compared to the horizontal width due to the many electron guns.
Figure img00030001
Figure img00030001
3) Dispositif selon la revendication par un ecran plat. 3) Device according to claim by a flat screen. 4) Dispositif selon la revendication 1 caractérisé par des angles vraiment carrés. 4) Device according to claim 1 characterized by truly square angles.
Figure img00030002
Figure img00030002
5) Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce qu'il comporte 5) Device according to any one of the preceding claims, characterized in that it comprises
Figure img00030003
Figure img00030003
sur dix canons à électrons balayant chacun un carré de 10 cm de côté permettant d'avoir un écran de 70 x 100 cm avec 10 cm de profondeur.  on ten electron guns each sweeping a square of 10 cm side allowing to have a screen of 70 x 100 cm with 10 cm of depth.
FR8810937A 1988-08-17 1988-08-17 Cathode-ray tube device with multiple electron guns, in order to obtain flat cathode-ray tubes with square corners and especially of small thickness Withdrawn FR2635610A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8810937A FR2635610A1 (en) 1988-08-17 1988-08-17 Cathode-ray tube device with multiple electron guns, in order to obtain flat cathode-ray tubes with square corners and especially of small thickness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8810937A FR2635610A1 (en) 1988-08-17 1988-08-17 Cathode-ray tube device with multiple electron guns, in order to obtain flat cathode-ray tubes with square corners and especially of small thickness

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FR2635610A1 true FR2635610A1 (en) 1990-02-23

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0226423A2 (en) * 1985-12-09 1987-06-24 Kabushiki Kaisha Toshiba Color cathode ray tube

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0226423A2 (en) * 1985-12-09 1987-06-24 Kabushiki Kaisha Toshiba Color cathode ray tube

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