Cathode ray tube device

[Detailed Description of the Invention]

Field of the Invention The present invention relates to the cathode ray tube apparatus constituted so that good resolution might be obtained the whole region on a fluorescence object screen side. The composition and its problem of a conventional example Generally, the thing of beam spot which obtain high resolution depending on the size and shape of beam spot (luminescent spot) which arise on a fluorescence object screen side and which no distortion is small as much as possible is important for the resolution of a cathode-ray tube and a device useless. The things arbitrary [ the beam spot according to 3 electron beams with a color cathode ray tube apparatus / on a fluorescence object screen side ] correctly concentrated by one point are important in respect of resolution, With this to an inline type color cathode ray tube apparatus, Self-concentration (self convergence) of the 3 electron beams 1 and 2.3 is carried out by making it distorted, respectively the shape of a bottle cushion as shows level deviation magnetic field distribution in Drawing 1 (a), and in the shape of [ as show perpendicular deviation magnetic field distribution in Drawing 1 (b) ] a barrel. However, if such a self-concentrated system is adopted, even if the convergence of 3 electron beams becomes good, the section shape of 3 electron beams will be distorted with increase of a beam deflection angle, and it will become easy to produce distortion of the tendency shown in Drawing 2 in the beam spot on a fluorescence object screen side which appears especially in a circumference part. That is, it is while beam spot 5 which appears in the central part on fluorescence object screen side 4 serves as a perfect circle, Beam Sprawling F e' which appears in a circumference part is one Awesome low spirit Hey to perpendicular direction □□ other than Mi 1 luminosity and 7~part 7, ! rho which accompanies lS8 -- again -- Chi] Everywhere: * -- □ To 1 with difficult Beam which obtains high resolution in the circumference part of a screen side especially, and ' -- the still more above shape distortion of beam spot, It can set to a self-concentrated system and the yoke for noted side □ is Drawing 1 (a) to 3 electron beams, Non-Equality-Magnetic * community * as shown in (b) is 1 To - * Obtained, and it originates in "' Rough *. - Carrying out, Electricity * child Bi 2 Beam in a deviation magnetic field becomes mouth ' which produces the article which * degree of convergence given within the electron gun * Is in profit * for normal force, and strengthens it, and a Deflection difference, and People. - ' The degree of Death and good axes to death obtains to mounting on a fluorescence object screen side, and they are Offer and a thing to offer about 19, Re, - To 1, and a cathode ray tube apparatus. - composition-The of from * and Ming, *, ", and -□ *- '-1 and - / Oblong rectangle-like Kai j * of the size made sufficient for passing the shape of an oblong ellipse, Lifestreet one side, and an electron beam in the electron beam passage hole of a control electrode in the cathode ray tube apparatus of The and the present invention, and OffH! This is also looked like [ a willow and To do ] and it explains in detail. 1.17. Explanation of Example of Real Pipe .. ; Three negative pole 10 a' which attended one on [ * ] electron gun Ick and a level-straight line as shown in 1.1 and Drawing 3, It has "1" 6 b, 10 c, control electrode 11, accelerating electrode 12, focusing electrode 13-, and anode 14, To shown in Drawing 4 and kicked Voice poles object 1.8 have oblong rectangle-like opening 19 of the single mouth of Dogs Come - made sufficient for passing a = 9"q; beam, and control electrode 11 is three 1 electronic b-' A copy m>tl□ *□7 *a in opening 19. 17b, ";1''; it is Detective censure by The '7-degreed'hl-M Hmm. It equips with the deflecting yoke which generates a '' Well well-deviation magnetic field for the Bai Li Teng Shal type electron gun of this electrode composition, and Operation under the same voltage condition also in the conventional cathode ray tube apparatus of the same kind. At the time of operation, it is 3 polar-zone lens 20a between control electrode 11 Accelerating electrode 12. 2Qb and 20C are produced and it is reserve focusing lens 2 between acceleration Direct train 12 and focusing electrode 13.. i a, 1. q, Although 21C is produced, these electron lenses give lens Work - of axial asymmetry to each electron beam. Namely, electron beam passage hole 15a of control electrode 11. the [ which 15b and 15C are formed in an oblong ellipse, and shows a horizontal section by that of Ya and To ] -- 15 figure (a) and Drawing 5 (1) showing a vertical section -- + Facial expression! Drawing 5 (C) showing a child Bim section shows -- as In each negative pole and the example of (illustration, substantial electron emission side 22b of negative pole 10b) serves as an oblong ellipse, and crossover 2.4 of electron beam 23k and the Decompression shape in b are also an oblong ellipse and To rub. it is Through about crossover 24b -- Electrode sales 18 which has 1 oblong rectangle-like opening 19 in 1. accelerating electrode 12 is that of attachment It is crafty, and an electrical engineering beam receives a strong preliminary convergence operation being horizontal, and weakness and for To perpendicular Ri, although preliminary convergence is carried out by reserve focusing lens 2.j+. This Conclusion, bottom Disconnectionゝゝ □·ゝ of Bi in an affair with the main focusing lens 25b It goes into a deviation magnetic field. With a natural thing, preliminary convergence is carried out with reserve focusing lenses 20a and 20C, respectively, and they are 1 and mainゝ1\. It is - beam electron beam about a final Convergence operation at focusing lens 2phia and 2.5C:? Even if it is, the sections of tau are the shape of an oblong ellipse, and Look to a t'7I jar. A 7 self-bow concentrated system deviation magnetic field receives electronic Bi 5-! at the time of the above-mentioned Yo 25 deviation, and is especially perpendicular and strong Convergence work. Bottom [ of the shape of 74p containing / electronic <-Beam / present invention A now in this deviation magnetic field as for an oblong ellipse, although business is given ], and-1 □ '' The shape of a Electric power 2 child B and Beam omega Decompression type is a true shell (it approaches FT5, and generating of a Supination difference is reduced and a good-shaped beam and I spot are obtained also in the circumference part on Oh and a Burning object-Iliin side by that of Ya.). Wren of the synthetic raise which consists of a reserve focusing lens and the main focusing lens since reserve-bunch lens 21 a+, 2.1b, and 21.c are respectively horizontally and weakly perpendicular and have a Faint convergence operation on an electron beam, and A magnification -- method With force of level -- small -- normal force and Toward -- 1 -- although it becomes large It is an object to the above-mentioned complex lens. since the beam section shape in a crossover serves as an oblong ellipse, it is beam Sprawling near a perfect circle also near the center on a fluorescence object screen side -- since it is a useless thing which amends the shape distortion of the beam spot by an electron beam they are single beam Up other than the above inline type color cathode ray tube apparatus -- it is applicable also like the cathode ray tube apparatus which operates with a Is plural beam. EFFECT OF THE INVENTION According to the present invention, it becomes possible for good beam spot to be obtained in the whole region on a fluorescence object screen side, and to make 1 and a very clear reproduction picture project as mentioned above. Drawings 2 are a figure showing a relation with 1 Beam, and the collection of selves and the figure showing typically the shape distortion of beam spot which adopts an inside method and appears on the fluorescence object screen side of ° It was slur polar pipe device, The horizontal sectional view of the electron gun part of the inline type color cathode ray tube apparatus with which Drawing 3 carried out the present invention, and Drawing 4 are an important section exploded perspective view of the electron gun part, and Drawing 5 (a). (b) + and (c) are the horizontal sectional views, the vertical cross sections, and the electron beam sectional views for explaining the operating state of the Chuo Electronics beam of the electron gun part. . 10'a 1ob, the IOC negative pole, 11 A control electrode, 12 .. An accelerating electrode, 13 A focusing electrode, 18 An electrode board, 19 Oblong rectangle-like opening. Name [ of a representative ] Nakao Toshio is Drawing 1 (al Lung, The 2 figure figure 3) one person. Patent attorney Drawing 5 Written amendment Showa 58 moon 3 / Asthma The Commissioner of JPO The display of construction nature The title of the Showa 57 patent-application 2.2MNo. 256 two inventions A Cathode ray tube apparatus Those who do 3 amendments A relation with an incident Patent It comes out. A request Leaving all to others Place Heavy Industry 1006, Kadoma, Kadoma-shi name (584) Name Matsushita Electronics Industry, Inc. representative 3 Object of 5 in Sanyo-4 representative Postcode571 address 1006, Kadoma, Kadoma-shi, Osaka Matsushita Electric Industrial Co., Ltd. amendment 6, the contents of amendment (1) Amend the statement of the claim of a specification as Sadness] paper. (2) Amend the 3rd page of writing "non-Equality -" of the 8th line to "non-Equality 1." (3) amending the 3rd page of writing "shape of an oblong ellipse of the 19th line" "for it to be oblong" -- To dent. (4) "0 which can be obtained" of the 4th line with a writing [ the ] of page [ 7th ] -- [-- it can obtain. In the above-mentioned example, although the electron beam passage hole of the accelerating electrode was made into the shape of an oblong ellipse depending on a control electrode and necessity, this may be a thing of shape similar to the shape of an oblong rectangle, the shape of a gold coin, or these, and if oblong in short, it will be amended to 0 which can acquire an effect similarly." 2 Claim The cathode-ray tube which encloses electrodes, such as the negative pole, a control electrode, an accelerating electrode, and a focusing electrode, While having a flat yoke with which this cathode-ray tube is equipped and which generates a non-Equality 1 deviation magnetic field, and the above-mentioned control electrode's having an oblong electron beam passage hole and having an electron beam passage hole circular [ the above-mentioned accelerating electrode ] or oblong, A cathode ray tube apparatus having an electrode board which has an oblong rectangle-like opening for electron beam passage in the end face by the side of the above-mentioned focusing electrode.