CN1080090A - Color cathode ray tube - Google Patents
Color cathode ray tube Download PDFInfo
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- CN1080090A CN1080090A CN93104902A CN93104902A CN1080090A CN 1080090 A CN1080090 A CN 1080090A CN 93104902 A CN93104902 A CN 93104902A CN 93104902 A CN93104902 A CN 93104902A CN 1080090 A CN1080090 A CN 1080090A
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- 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
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
- H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes
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- 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
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
- H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
- H01J29/503—Three or more guns, the axes of which lay in a common plane
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- Electrodes For Cathode-Ray Tubes (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
The color cathode ray tube of electron gun in line is housed, comprises by two mutual main lenss of constituting of the cylinder electrode installed of relation at certain intervals.Each electrode has the opening of oval cross section, and the plate electrode on it has the electron beam channel district, and two electrodes have different voltage.Be suitable for following inequality
5.0＞S, D＞S and 55S-20D＞147
S be between the adjacent electron beam interfascicular every, D is the perpendicular diameter of the cross section of two cylinder electrode opposite ends.
Description
The present invention relates to a kind of color cathode ray tube that electron gun in line is housed, such structure can be to phosphor screen emission three-beam electron-beam on a horizontal line.
In the cathode ray tube that an electron gun is housed at least, include a negative electrode and a plurality of grid, one arrangement for deflecting and a phosphor screen, for can all can obtain the image reconstruction of the best up to the edge from fluoroscopic center, following technology is known: a kind of is at the electrode zone that constitutes condenser lens (main lens) astigmat to be installed, another kind is to form the slit in electron beam channel hole on the main lens that the electrode by in line electron gun constitutes, and makes the size difference (Japan is publication application 64368/1976) in center and peripheral electron beam channel hole.
Such color cathode ray tube of a vacuum tube is installed as shown in Figure 1 at least, comprise the panel of making by glass and so on insulator 61, glass awl 62 and neck 63, be included in the electron gun 64 in the vacuum tube, shadow mask 65 and phosphor screen 66, the picture reproducing by electron gun 64 electrons emitted bundles bump phosphor screen 66.
Fig. 2 is the sectional view of main lens major part, is shown schematically in the general electron gun structure in line that is used for above-mentioned cathode ray tube.
In Fig. 2, label 08,09 and 010 is a negative electrode, the 011st, first grid, the 012nd, second grid, 13 is the 3rd grids, the 3rd grid is one that constitutes in the electrode of main lens, 014 is the 4th grid, the 4th grid is another electrode that constitutes main lens, and 015,016 and 017 is the interior garden tube that is connected the 3rd grid 013 opening portion on the 4th grid 014 1 sides, 018,019 and 020 is the interior garden tube that is connected the 4th grid 014 opening portion on the 3rd grid 013 1 sides.Label 021,022 and 023 is respectively the central shaft of electron beam, and the central shaft 022 of central electron beam and the axle (vacuum tubular axis) of electron gun are in line.These central shafts 021,022 and 023 respectively with first, second and the 3rd grid 011,012 and 013 corresponding negative electrode 08,09 and 010 opening and with the interior garden tube 015 that is connected the 3rd grid 013 opening portion, 016 and 017 central shaft in line, garden tubes almost are mounted at grade abreast in these.
The central opening of the 4th grid 014 part and be connected the central shaft of interior garden tube 019 of central opening part and central shaft 022 in line.But the central shaft of both-side opening part and the interior garden tube 018 that is connected opening portion and 020 and the corresponding central shaft of the 3rd grid and misaligned, but a little outwards skew.
Symbol S among Fig. 2 represents the interval between the central shaft 021,022 and 023 of electron beam, L represent the outside electron beam central shaft 021 and 023 and inboard wall of tube neck between distance, the D representative is connected the internal diameter of the interior garden tube of G3 electrode 013 opening portion.
The job description of electron gun in line with said structure is as follows.
Be attracted to first grid 011 from three negative electrodes 08,09 being heated by filament and the thermal electron of 010 emission owing to second grid 012 is added with positive voltage, and form three electron beams.Then, these three electron beams pass the opening of first grid 011, then pass the opening of second grid 012 again.These electron beams are gone forward side by side into main lens owing to the positive voltage that is added on the 3rd grid 013 and the 4th grid 014 is accelerated.
In this case, about low-voltage of 5 to 10KV is added in the 3rd grid 013 that constitutes main lens; Being added to fluoroscopic about 20 to 35KV high voltages bores the conducting film of 62 inwalls and is added to the 4th grid 014 by being coated in glass, therefore, the 4th grid 014 is added with high voltage because the 3rd grid 013 is added with low voltage, forms an electrostatic field between current potential official post the 3rd grid 013 between the two and the 4th grid 014.Thereby the path when three electron beams pass through in main lens is by the deflection of static place.As a result, three electron beams are focused on phosphor screen.
Moreover because it is out-of-line each other with the central shaft of the relative opening of garden tube of the 4th grid 014 limit bundle to be used for the 3rd grid 013, with respect to central shaft, main lens is asymmetric for the limit bundle.So the electron beam on the limit can be to intrinsic deflection, thereby assembles according to the center electron beam on the phosphor screen.Therefore three electron beams are converged at phosphor screen, and by the R that three electron beams produce, the three-colour image of G and B is correctly located, and demonstrates chromatic image.
In aforesaid electron gun structure in line, because the deviation that has slightly of parts of electronic gun precision and assembly precision just can not satisfy the convergence condition of three electron beams.Therefore, for electron-beam convergence just must be adjusted.
In this convergence is adjusted, when the interfascicular between the electron beam when S reduces, electron beam just reduced departing from also of converged state, adjusted and also just became easy.Learn that being provided with approximately is best less than 5 millimeters to the S value from the experimental result in past.
But in traditional focus electrode structure, the opening diameter of focusing electrode is limited in: littler every the S value than the interfascicular between the adjacent electron beam that enters lens.Therefore, for the interfascicular between the electron beam is set to less than 5mm every S, opening diameter just is restricted.
The effective aperture of each electron beam condenser lens is by this opening diameter decision, yet the problem of appearance is when opening diameter reduces, and the spherical aberration of lens increases, and the electron-beam point diameter is increased.
In order to address the above problem, known structure is introduced by day patent application 103752/1983 of the present disclosure.This structure can reduce spherical aberration and interfascicular still can remain on less than 5mm every s.
It is as follows referring now to Fig. 3 above disclosed electron gun structure to be made brief description.
Fig. 3 (a) is the longitudinal cross-section diagrammatic sketch of a major part, shows the main lens of an electron gun in line, and Fig. 3 (b) is the cross-sectional view along the major part of Fig. 3 (a) of the A-A ' line of Fig. 3 (a) intercepting.
In Fig. 3, label 13 is the 3rd garden tubular grids, and its open cross-section almost is ellipse garden, 14 is the 4th garden tubular grids, its open cross-section also almost is ellipse garden, and 13-1 is mounted in the plate electrode on the 3rd grid 1, and 14-1 is mounted in the plate electrode on the 4th grid 2,13R, 13G and 13B are the electron beam channel holes (opening) on the plate electrode 13-1, and 14R, 14G and 14B are the electron beam channel holes (opening) on the plate electrode 14-1, and 21,22 and 23 are central shafts.
Shown in Fig. 3 (b), at the plate electrode 13-1 upper shed 13R perpendicular to the 3rd grid 1, (vertical direction) diameter D approximates the diameter of the main lens that is formed by electrode greatly on the direction of the direction in line (horizontal direction) of 13G and 13B.When diameter D increased, spherical aberration reduced, and the electron-beam point diameter also reduces.
But, even in said structure, following other problem has also appearred.
That is, increase the diameter D and the diameter that reduces the electron-beam point on phosphor screen of vertical direction, just must be increased in the beam diameter of main lens electrode.In this case, if the diameter D of vertical direction is more many greatly every S than the interfascicular of adjacent electron beam, the problem that causes is that electron beam can collide on the plate electrode in the grid, particularly when the electron beam of big electric current.
An object of the present invention is to provide a kind of cathode ray tube of electron gun in line that has that when three electron-beam convergences, can not cause any problem, and by this way promptly, electron beam can increase the diameter of main lens when not colliding plate electrode in the 3rd grid.
In order to achieve the above object, the color cathode ray tube of electron gun in line that is equipped with provided by the invention comprises electron beam generating device at least, is used in line to three electron beams of phosphor screen emission; The main lens device is used to make three electron beams to focus on phosphor screen, in two garden tube electrodes, the plate electrode with electron beam channel district is housed, two garden tube electrodes are installed at certain intervals by on the electron beam generating device electrons emitted bundle direct of travel, and has an opening in approximate cross section, ellipse garden, remain on the different current potentials, it is characterized in that, distance S(mm between the center of three adjacent electron beam) expression, perpendicular to the opening diameter D(mm of two garden tube electrodes of electron beam orientation in line) during expression, then above-mentioned S and D satisfy following relationship:
S＜5.00
D＞S and
55S-20D≥147
And color cathode ray tube is characterised in that two garden opposed facing openings of tube electrode that constitute the main lens device respectively comprise a single opening that is used for three electron beams.
And structure as mentioned above, the problem that the color cathode ray tube of electron gun in line may comprise is installed is: if each electron beam and the distance that is used to hold between the inboard wall of tube neck of electron gun in line are too small, inboard wall of tube neck has high potential owing to the glass wimble fraction at color cathode ray tube is added with high pressure, when color cathode ray tube works long hours continuously, the electric field that produces owing to the high potential of glass tube neck inwall makes the electron beam deflecting, thereby three electron beams can not focus on phosphor screen.
Increase electron beam and hold distance between the inboard wall of tube neck of electron gun in line, the interfascicular that just must increase the neck diameter or reduce adjacent electron beam is every S.
But if increase the neck diameter, glass awl diameter also will increase, and distance and deflecting coil also will increase between each electron beam, and the deflection sensitivity of deflecting coil is descended.
If reduce interfascicular every S, the problem of bringing is to make between the bundle and make the distance between the main lens electrode that electron beam is isolated mutually in the main lens reduce (the beam diameter maximum in main lens), and electron beam will collide main lens electrode.
If avoid collision with reducing beam diameter in the main lens electrode, the problem of appearance is, because the lens multiplication factor reduces and space charge effect increases the diameter increase that makes the electron-beam point on the phosphor screen.In addition, when main lens is (as shown in Figure 2) when being made of each electrode that has three garden shape openings, if interfascicular reduces every S, another problem of appearance is that the main lens spherical aberration increases, then because lens aperture D also must reduce, the electron-beam point on phosphor screen also will further increase.
Another object of the present invention provides a kind of color cathode ray tube of electron gun in line that is equipped with, in this cathode ray tube, solved the problem of above-mentioned prior art, and the influence by eliminating the inboard wall of tube neck current potential and when having reduced to work long hours the skew of electrostatic convergence improved focus characteristics.
In order to achieve the above object, according to the present invention, being equipped with in line, the color cathode ray tube of electron gun has electron beam generating device from three electron beams to phosphor screen that launch, and one keep different potentials by two and three electron beams isolated mutually and main lens that the electrode that focuses on phosphor screen is formed, be characterised in that external diameter T(mm when the neck 63 that holds electron gun in line) expression, interfascicular between the central shaft of adjacent electron beam is every using S(mm) when representing, above-mentioned T and S satisfy following relationship:
2S+14.6≤T≤25.3, interfascicular is 4.1mm or bigger every S.
Fig. 1 is a sectional view, shows the structure of the color cathode ray tube that is used for electron gun in line of the present invention simply;
Fig. 2 is the sectional view of a main lens major part, shows the structure of the common electron gun in line that is used for cathode ray tube shown in Figure 1 simply;
Fig. 3 is a sectional view, shows to be used for the electron gun major part of the color cathode ray tube of electron gun in line that is equipped with of the present invention;
Fig. 4 is a curve chart, shows the relation between the preferred diameter of electron beam and lens aperture in the lens;
Fig. 5 is a curve chart, the relation between the maximum electron beam diameter when showing the interfascicular of adjacent electron beam electron beam not colliding the plate electrode that is contained on the tube electrode of garden every S and in main lens;
Fig. 6 is a curve chart, shows the relation of interfascicular between the garden tube gate openings diameter D on S and the vertical direction;
Fig. 7 shows a sectional view of electron gun main lens major part in line, has showed the embodiment of the cathode ray tube of electron gun in line that is equipped with of the present invention;
Fig. 8 is a curve chart, and the axle that shows from three electron beams limit bundle is to the distance L (mm) of inboard wall of tube neck with after working 24 hours, and electron beam is at the displacement P(mm on the phosphor screen) between relation;
Fig. 9 is a curve chart, shows the deflection sensitivity H(mHA of glass tube neck external diameter T and deflecting coil
2) between relation, abscissa is represented the external diameter T of glass tube neck in the drawings, ordinate is represented the deflection sensitivity H(mHA of deflecting coil
2);
Figure 10 is the sectional view of the axial major part of pipe, shows an embodiment of the cathode ray tube that electron gun in line of the present invention is housed;
Figure 11 is the straight line B-B direction of indication from Figure 10, along arrow b, and the sectional view that b sees perpendicular to tube axial direction;
Figure 12 sees the sectional view of straight line B-B perpendicular to the essential part of tube axial direction by arrow C-C direction among Figure 10.
Above-mentioned structure makes it might prevent the problem that occurs in three electron-beam convergences. And, because structure shown in Figure 3 is for main lens, on (cross section of opening is similar to ellipse garden) three directions that electron beam is capable perpendicular to garden tube electrode opening, diameter D is no better than the main lens diameter that is formed by electrode, thereby it is bigger to do the diameter of main lens than traditional structure, to reduce spherical aberration, by being the diameter D of vertical direction greatlyyer every s than the interfascicular between the adjacent electron beam center, thereby with common comparison, can reduce the diameter of electron-beam point.
In an electron gun in line, when main lens diameter increases, then in order to effectively utilize the diameter of main lens, just must increase the diameter that enters the electron beam in the main lens. Its reason is must prevent from increasing owing to space charge effect makes the electron-beam point on the fluorescent screen. But if the beam diameter in the main lens excessively increases, owing to the cause of lens aberration, the diameter of the electron-beam point on fluorescent screen will increase so. That is, the beam diameter in main lens has an optimum value.
Fig. 4 is a curve map, shows the relation between lens diameter and the electron beam optimum diameter in lens. In the figure, these numerical value are be 25KV when the 4th grid voltage, and the 3rd grid voltage is that 7KV and beam current value are 4mA, and is 51cm in the screen diagonal of color cathode ray tube, and deflection angle is to draw by analysis in 90 ° the situation.
From this figure, can see: when lens diameter increased, the optimized electronic beam diameter also increased.
But, in having the electron gun of main lens structure shown in Figure 3, if greatly more many every S than interfascicular perpendicular to the diameter D on three electron beam line directions at opening part, just must increase according to the increase of diameter D the beam diameter that is applied on the main lens, thereby when large-current electric when bundle, electron beam will collide on the plate electrode in the cylindrical electrode of garden. Fig. 5 is a curve map, the relation in the main lens when showing interfascicular and not having plate electrode in the cylindrical electrode of electron beam hits garden every S and in main lens between the maximum electron beam diameter. Do not have the electron beam hits plate electrode in the shadow region that Fig. 5 bend represents, beam diameter is littler than the value that is represented by straight line.
From Fig. 4 and the fact shown in Figure 5, can obtain the relation of interfascicular between S and lens diameter. Lens diameter is equivalent to the diameter D of the vertical direction of garden tubular gate openings. Therefore, also just obtained the relation of interfascicular between the vertical direction diameter D of s and garden tubular gate openings.
Fig. 6 is a curve map, shows the relation of interfascicular between the vertical direction diameter D of S and garden tubular gate openings. In Fig. 6, straight line " a " shows from the S of the acquisition of the relation between Fig. 4 and Fig. 5 and the relation between the D size, the line during straight line " b " expression S=D.
That is to say that lens diameter D and the maximum gauge Xr that is added to the electron beam on the lens can represent with following formula approx:
55Xr-20D＝30……（1）
In Fig. 5, the interfascicular that is represented by the shadow region every S and when not having the plate electrode of electron beam hits in the cylindrical electrode of garden in the main lens relation the maximum electron beam diameter Xr be expressed from the next:
Xr≤S-2.1……（2）
From top expression formula (1) and (2), in lens, do not have the plate electrode of electron beam hits in the tube electrode of garden by the interfascicular of this region representation every S and lens aperture D() relation by cancellation the following formula of maximum electron beam diameter Xr represent:
55S-20D≥147……（3）
Can reduce by the lens aperture being increased to limiting value in the straight line lower area diameter of the electron-beam point on the fluorescent screen, under this limiting value, when large-current electric bundle, not have electron beam hits to be contained in plate electrode in the tube electrode of garden.
And, be lens diameter D greatlyyer every S and be possible, in this zone, satisfy the shadow region among S=D(Fig. 6 than the interfascicular in the above-mentioned zone).
Like this, in having the electron gun of structure shown in Figure 3, required lens diameter D and interfascicular all drop in the shadow region shown in Figure 6 every the value of s.
Drop on lens diameter D and the relation of interfascicular between S in Fig. 6 shadow region by employing, might do main lens diameter greatlyyer there not being electron beam hits to be contained in the limit range of the dull and stereotyped electroplax in the tube electrode of garden than common, in this lens, the opening of electrode has the cross section in approximate ellipse garden, when at large-current electric bundle, any problem of three electron-beam convergence aspects can not appear yet.
Describe one embodiment of the present of invention below with reference to accompanying drawings in detail.
Fig. 7 is the sectional view of the major part of an electron gun main lens in line, show one the present invention embodiment of the cathode ray tube of electron gun in line is housed, wherein Fig. 7 (a) is the longitdinal cross-section diagram of the major part on the direction in line, Fig. 7 (b) is the cross-sectional view of the major part that A-A ' line is seen from Fig. 7 (a), and Fig. 7 (c) is the cross-sectional view of the being seen major part of B-B ' line from Fig. 7 (a).
In Fig. 7, label 13 is the 3rd grids that constitute main lens, 13-1 is the plate electrode that is contained in the 3rd grid 13,13R, 13G and 13B are color electric beam passage holes, the 14th, and the 4th grid of formation main lens, symbol 14-11 is the plate electrode that is contained in the 4th grid 14,14R, 14G and 14B are color electric beam passage districts.
14G is an opening in the electron beam channel district at plate electrode 14-11 center, and the electron beam channel district 14R and the 14B that are used for the limit bundle are the electron beam channel holes that inwall surrounded that is cut part and the 4th grid 14 by plate electrode 14-11.The opening of the 3rd grid 13 and the 4th grid 14 is of similar shape, and with Fig. 3 in identical label corresponding to identical part.
In Fig. 7, the interfascicular that enters between the adjacent electron beam center of main lens is 4.75mm every S, is 5.5mm at the 3rd grid 13 and the 4th grid 14 opening parts perpendicular to the diameter D on three electron beam line directions.
Under the situation of above-mentioned size, the interfascicular that enters the adjacent electron beam of main lens meets the represented condition in shadow region among Fig. 6 every s and at the 3rd grid 13 and the 4th grid 14 opening parts perpendicular to the relation between the diameter D on three electron beam line directions.In this case, it is identical with the garden tubular lens with 5.5mm diameter that the spherical aberration of main lens almost becomes, when three electron-beam convergences, do not go wrong, the plate electrode 13-1 in electron beam hits the 3rd grid 13 does not take place when large-current electric bundle yet.Therefore, with the common electron-beam point diameter that might greatly reduce on phosphor screen of comparing.
As mentioned above, the invention provides color cathode ray tube with electron gun in line, in this pipe, the diameter of arranging by three electron beams that are preferably perpendicular to the electrostatic focusing electrode that passes formation electron gun main electrode in line can obtain the major diameter lens, this cathode ray tube high-resolution image of resetting out.
Be to offset below except the inboard wall of tube neck potential effect, and the explanation of a kind of color cathode ray tube of electrostatic convergence skew when having reduced to work long hours.
Fig. 8 is a curve chart, the central shaft that shows both sides electron beam from three electron beams is after the distance L (mm) of inboard wall of tube neck and work 24 hours, electron beam is at displacement P(mm on the phosphor screen) between relation, wherein abscissa represents that the electron beam central shaft is to the minimum range L(mm between the inboard wall of tube neck), ordinate is represented the distance P (mm) that work was moved after 24 hours.
Straight line among Fig. 8 " a " is expressed from the next
P＝-0.12L+0.66
Usually, people know after work 24 hours, electron beam displacement P is 0.1mm or is actually permission forr a short time, therefore by the distance L from the center of side electron beam to inboard wall of tube neck is set at 4.8mm or bigger, just might after work 24 hours, make electron beam displacement P(mm) remain in this usage range.
Suppose the thickness of glass that constitutes neck for " h " (mm), can obtain the external diameter T(mm of neck from following expression formula).
T＝（S+L+h）×2
Can form through hole owing to penetrate the discharge of neck glass.In order to prevent to be referred to as this class through hole that neck glass penetrates, the thickness h of neck glass (mm) requires to be 2.5mm or thicker.Therefore, like this neck glass external diameter T(mm of decision) and interfascicular every S(mm) electron beam displacement P maintenance after just may making work in 24 hours in allowed limits, external diameter of tube neck T and interfascicular meet following expression formula every S
2S+14.6≤T
Fig. 9 is a curve chart, shows the relation between the deflection sensitivity H of neck glass external diameter T and deflecting coil, and abscissa is represented the external diameter T of neck glass in the drawings, and ordinate is represented the deflection sensitivity H(mHA of deflecting coil
2).
Straight line among Fig. 9 " b " is represented by following expression formula
H＝0.46T+2.4
Because the more superior neck glass external diameter T that is referred to as thin neck picture tube usually is 22.5mm aspect deflection sensitivity, its deflection sensitivity H is 12.8mHA
2When using common thin neck picture tube, when deflection sensitivity descends approximately 10% the time from above-mentioned value, there is no need deflection current to television set and produce circuit and do great change, its consistency still can be maintained, and in fact the increase of deflection power can ignore.That is, deflection sensitivity is brought up to 14.1mHA among Fig. 9
2Be in usage range.
Therefore, when the external diameter of neck glass is 25.3mm or more hour, might be set in deflection sensitivity H in the usage range.And, by changing the structure of deflecting coil, be added at the neck increasing diameter under the situation of this degree, still might eliminate deflection sensitivity and reduce 10%.
To use the main lens aperture of electron gun in line effectively, when main lens diameter increases, just must increase the beam diameter that is applied to main lens, prevent to make the amplification of the electron-beam point on the phosphor screen thus owing to space charge effect.But,, will the bundle spot diameter on the phosphor screen be increased owing to lens aberration if the beam diameter of main lens too increases.That is, the beam diameter in main lens has a preferred value.Therefore as mentioned above, straight line among Fig. 6 " a " or expression formula (3) have been obtained.
Under the situation of garden cylindrical electrode, lens diameter D(mm) corresponding to the direction of the diameter D(on the vertical direction of garden cylindrical electrode opening) perpendicular in line electron gun orientation.Under electrode situation, lens aperture D(mm) corresponding to the diameter D of garden shape opening with three garden shape openings.
When interfascicular is in the zone under straight line " a " time every the relation between s and the lens diameter, when restrainting, large-current electric do not have the electron beam hits electrode.But, if lens diameter less than 3.9mm, the diameter of electron-beam point can increase too much, this can have problems.Therefore, lens diameter is necessary for 3.9mm or bigger.And size S must be 4.1mm or bigger.
By satisfying above all conditions, make the electron beam displacement P of work after 24 hours can be in usage range, and make deflection sensitivity H also in the scope of a practical magnitude, do not have the electron beam hits electrode, and the diameter of electron-beam point can be reduced to minimum.
Below with reference to accompanying drawings, introduce another embodiment of the cathode ray tube of electron gun in line that is equipped with of the present invention.
Figure 10 is a sectional view that is similar to the axial major part of pipe of Fig. 2, shows the embodiment of the cathode ray tube of electron gun in line that is equipped with of the present invention.
In Figure 10, label 1 is an electron gun in line that is contained in the neck 63; 08,09 and 010 is negative electrode; The 011st, the G1 electrode; The 012nd, the G2 electrode; The 5th, G3 electrode, this electrode are to constitute one of main lens electrode, the 6th, and G4 electrode, this electrode are another electrodes that constitutes main lens; 57,58 and 59 is electron beam central shafts; 5-1 is provided in a side of the plate electrode in the G3 electrode 5; 5R, 5G and 5B are the electron beam channel holes that forms on plate electrode 5-1; 6-1 is provided in a side of the plate electrode in the G4 electrode 6; 6R, 6G and 6B are the electron beam channel holes that forms on plate electrode 6-1.
Figure 11 is along perpendicular on the tube axial direction, and by arrow b among Figure 10, the b direction is from the sectional view of the seen major part of line B-B.Figure 12 is perpendicular on the tube axial direction by arrow C among Figure 10, and the C direction is from the sectional view of the seen major part of line B-B.
In Figure 10 to 12, G3 electrode 5 is garden cylindrical electrodes, and the open cross-section on it is similar to ellipse garden, and the G4 electrode also is the garden tubular, and the open cross-section on it is similar to ellipse garden.
As shown in Figure 11, be used for the electron beam channel hole 5R by three electron beams, 5G and 5B are with the horizontal direction X-X(electron gun plane of arranging in line in G3 electrode 5) the plate electrode 5-1 that installs goes up and forms.
Be installed on the G4 electrode 6 plate electrode 6-1 therein the heart central electron beam access opening 6G is arranged, divide by the inwall of G4 electrode 6 and by the both sides institute cut-away of the X-X direction of plate electrode 6-1 to form both sides electron beam channel hole 6R and 6B.Opposed facing opening is of similar shape on G3 electrode 5 and the G4 electrode 6.
The external diameter T(mm of neck 63) be 24.3mm, enter the central shaft 57 of the adjacent electron beam of main lens, interfascicular between 58 and 59 is every S(mm) be 4.75mm, in three electron beam orientations, the diameter D in G3 electrode 5 and 6 upper sheds of G4 electrode as main lens diameter is 5.5mm, can obtain following expression formula for these sizes
2S+14.6＝2×4.75+14.6＝24.1
Therefore, the external diameter T of neck glass satisfies with lower inequality
2S+14.6≤T≤25.3
And size S is 4.75mm, and this is worth greater than 4.1mm.
Therefore, in this case, might be at work electron beam displacement P(mm after 24 hours) remain in the practical scope its deflection sensitivity H(mHA
2) also be practical, there is not the electron beam hits electrode, it is satisfactory that electron-beam point diameter little also is enough to.
As mentioned above, the present invention can provide a kind of color cathode ray tube of electron gun in line that is equipped with, by determining the external diameter T(mm of cathode ray tube) and a plurality of adjacent electron beam center between interfascicular every S(mm), make them meet the relation of 2S+14.6≤T≤25.3, interfascicular by such decision is 4.1mm or bigger every S, so that its deflection sensitivity still remains in the usage range, there is not the electron beam hits main lens electrode, and the I of electron-beam point diameter is satisfactory, thereby makes it have the good function of distance limit in usage range that electron beam is moved in the back that works long hours.
Claims (3)
1, a kind of color cathode ray tube of electron gun in line that is equipped with comprises at least: electron beam generating device is used to be in line and arranges ground to three electron beams of phosphor screen emission; With the main lens device, be used to make described three electron beams on phosphor screen, to focus on, described main lens device comprises two garden cylindrical electrodes that concern configuration on described tube axial direction mutually at certain intervals, each electrode has the opening of approximate ellipse garden cross section, and has the plate electrode in charged sub-beam passage district thereon, described two garden cylindrical electrodes have different voltage, wherein satisfy following inequality
5.0＞S
D＞S and
55S-20D≥147
S is that interfascicular between described three adjacent electron beam central shafts is every, the D diameter for the described cross section of the above tube electrode opposite end, two gardens opening of direction of being arranged in a straight line perpendicular to described three electron beams.
2,, comprise the public single opening that is used for described three electron beams on each described cross section of the described opening on the described opposite end of wherein said two garden tube electrodes according to the color cathode ray tube of claim 1.
3, a kind of color cathode ray tube of electron gun in line that is equipped with comprises at least: electron beam generating device is used to be in line and arranges ground to three electron beams of phosphor screen emission; Be used to make described three electron beams on phosphor screen, to focus on the main lens device, described main lens device comprises two garden cylindrical electrodes that concern configuration on described tube axial direction mutually at certain intervals, described two garden cylindrical electrodes have different voltage, wherein satisfy following inequality
2S+14.6≤T≤25.3 Hes
4.1≤S
S is that the interfascicular between described three adjacent electron beam central shafts is the external diameter of neck that holds the vacuum bubbles of described electron gun in line every, T.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP101361/1992 | 1992-04-21 | ||
| JP4101361A JP3053959B2 (en) | 1992-04-21 | 1992-04-21 | Color cathode ray tube with in-line type electron gun |
| JP101361/92 | 1992-04-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1080090A true CN1080090A (en) | 1993-12-29 |
| CN1054463C CN1054463C (en) | 2000-07-12 |
Family
ID=14298700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93104902A Expired - Fee Related CN1054463C (en) | 1992-04-21 | 1993-04-21 | Color cathode ray tube |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3053959B2 (en) |
| KR (1) | KR100222054B1 (en) |
| CN (1) | CN1054463C (en) |
| FR (1) | FR2694130B1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100777715B1 (en) * | 2001-07-28 | 2007-11-19 | 삼성에스디아이 주식회사 | Color cathode ray tube with electron gun |
| KR100434321B1 (en) * | 2001-11-12 | 2004-06-04 | 엘지.필립스디스플레이(주) | Electron gun for Color CRT |
| KR101560133B1 (en) * | 2015-07-01 | 2015-10-14 | 주식회사 다윈 | Manufacturing method of agricultural padding with a far-infrared emission |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58103752A (en) * | 1981-12-16 | 1983-06-20 | Hitachi Ltd | Electron gun for color picture tube |
| US4581560A (en) * | 1981-12-16 | 1986-04-08 | Hitachi, Ltd. | Electron gun for color picture tube |
| NL8302773A (en) * | 1983-08-05 | 1985-03-01 | Philips Nv | COLOR IMAGE TUBE. |
| JP2573238B2 (en) * | 1987-08-05 | 1997-01-22 | 株式会社東芝 | Color picture tube device |
-
1992
- 1992-04-21 JP JP4101361A patent/JP3053959B2/en not_active Expired - Fee Related
-
1993
- 1993-04-19 KR KR1019930006532A patent/KR100222054B1/en not_active IP Right Cessation
- 1993-04-19 FR FR9304563A patent/FR2694130B1/en not_active Expired - Fee Related
- 1993-04-21 CN CN93104902A patent/CN1054463C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR930022441A (en) | 1993-11-24 |
| JPH05299027A (en) | 1993-11-12 |
| CN1054463C (en) | 2000-07-12 |
| KR100222054B1 (en) | 1999-10-01 |
| JP3053959B2 (en) | 2000-06-19 |
| FR2694130A1 (en) | 1994-01-28 |
| FR2694130B1 (en) | 1996-05-24 |
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