CN1039148A - Chromoscope and arrangement for deflecting - Google Patents
Chromoscope and arrangement for deflecting Download PDFInfo
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- CN1039148A CN1039148A CN89104457A CN89104457A CN1039148A CN 1039148 A CN1039148 A CN 1039148A CN 89104457 A CN89104457 A CN 89104457A CN 89104457 A CN89104457 A CN 89104457A CN 1039148 A CN1039148 A CN 1039148A
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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
- H01J29/56—Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses
- H01J29/566—Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses for correcting aberration
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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
- H01J29/70—Arrangements for deflecting ray or beam
- H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
- H01J29/76—Deflecting by magnetic fields only
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- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
This chromoscope has a row type electron gum member 20 and an arrangement for deflecting 21, this arrangement for deflecting 21 has so that 3 electron beams upper deflecting in the horizontal direction, the main horizontal deflection coil 23 that pincushion deflecting magntic field takes place and so that the deflection in vertical direction of 3 electron beams, the main frame deflector coil 25 that barrel-shaped magnetic deflection field takes place, and also have a plurality of permanent magnets, the quiet concentrated pincushion field that it on the process road of 3 electron beams between the electronic lens section of this arrangement for deflecting and electron gum member 3 electron beams also takes place the caused deflection aberration of the magnetic deflection field that is formed by frame deflector coil is compensated and carries out.
Description
The present invention relates to the caused deflection aberration of the magnetic deflection field of arrangement for deflecting is improved and had the color picture tube and the arrangement for deflecting of good focusing characteristic.
Generally, color picture tube as shown in figure 16, have by panel 1 and the shell 3 formed of pipe funnel 2, with the inboard that is contained in this panel 1 and be formed with the shadow mask of a plurality of electron beam through-holes 4 relative, be formed with by sending the phosphor screen 5 that indigo plant, 3 look luminescent coatings green, red light are constituted at the inner face of panel 1.Again by configuration in the neck 6 of pipe funnel 2 launch 3 electron beams (B), (G), (R) electron gum member 7, make 3 electron beams (B) that electron gum member 7 from then on launched, (G), (R) by the arrangement for deflecting 9 on outside the border that is contained in pipe tapered segment 8 of funnel 2 and neck 6 thus scan on phosphor screen 5 in level and vertical direction upper deflecting, and become can be on this phosphor screen 5 color display.
This arrangement for deflecting 9, as shown in figure 17, have make 3 electron beams in the horizontal direction upper deflecting a pair of horizontal deflection coil 10 and make a pair of frame deflector coil 11 of its deflection in vertical direction.
In above-mentioned color picture tube,, be necessary to make electron beam (B), (G), (R) on whole phosphor screen 5, correctly to concentrate in order on phosphor screen 5, to show correct image.For this reason, have a kind ofly make particularly that electron gum member 7 is formed by central electron beam G and an offside electron beam (B), (R) for emission, the row type electron gum member of 3 electron beams (B) through conplane, as to do a row configuration, (G), (R), and bring into play the characteristic of this row type electron gum member, arrangement for deflecting 9 formed magnetic deflection fields are specific non-homogeneous magnetic field by making, and make a row type color picture tube that makes the auto-convergence mode that 3 electron beams (B), (G), (R) can both concentrate on whole phosphor screen 5.Magnetic deflection field as a row type color picture tube of this auto-convergence mode, known it is opposite with the color picture tube of for example launching 3 electron beams (B) by the row configuration of one on the general same horizontal plane, (G), (R), and constitutes with the horizontal deflection magnetic field of pincushion and barrel-shaped magnetic deflection field.By making such magnetic field, 3 electron beams (B), (G), (R) that the conplane row of process are disposed concentrates on a bit on the phosphor screen 5.
But even constitute magnetic field as described above, and the caused coma aberration of convergence deflection because of central electron beam (G) and side electron beam (B), (R) can take place at the picture peripheral part in an above-mentioned row type color picture tube.
For this coma aberration is proofreaied and correct, in the public clear 51-26208 of spy number and special public clear 54-23208 communique, disclose the magnetic that the rear portion leakage field of configuration and arrangement for deflecting combines on electron gum member is arranged, in real public clear 57-45748 communique, then disclose again the magnetic that does not use the rear portion leakage field with such arrangement for deflecting to combine is arranged, and relative to arrangement for deflecting the additional ancillary coil of this electron gun one side, form strong pincushion field by making the synchronous electric current of deflection current that wherein flows through and in frame deflector coil, flow through.
But even constitute color picture tube like this, and the point of the electron beam on the phosphor screen becomes the point that distorts with its deflection.Promptly, as shown in figure 18, make the point 13 of the electron beam of its deflection on whole image 14, almost become real round dot by homogeneous magnetic field, as shown in figure 19 by non-homogeneous magnetic field make its deflection electron beam point 13 then at the place, end of the trunnion axis (X-axis) of picture 14 as Figure 20 (a) shown in because its Lower Half of Lorentz force that the first half of each electron beam of effect (B) of above-mentioned pincushion horizontal deflection magnetic field 15, (G), (R) is subjected to pushing downwards then is subjected to the Lorentz force that pushes upward, and distortion is to make that horizontal axis is the ellipse of growing crosswise of major axis.Locate in vertical axis (Y-axis) end of picture 14 again, because the right half part of each electron beam of effect (B) of above-mentioned barrel field 16, (G), (R) is subjected to the Lorentz force to right-hand pushing, left-half is subjected to distorting to the Lorentz force of left pushing, and trunnion axis is the ellipse of growing crosswise of major axis in order to make shown in Figure 20 b.Particularly about an offside electron beam (B), (R), since the suffered power of the left and right sides of electron beam electron beam vary in size and on the electron beam (R) on the electron beam (B) in the left side of picture and right side the direction of suffered power opposite, tilt to cross one another direction shown in the 13B among Figure 19,13R at the offside electron beam (B) on the vertical axis end, the point of (R).Consequently, because the distortion or the inclination of level or vertical deflection magnetic field 15,16 caused electron-beam points thus, the obvious deterioration of focus characteristics in the periphery office of picture 14.And the deterioration of this focus characteristics becomes the obstruction electron gum member high performance main cause.
For this reason,, have to compromise in design, promptly the focusing of the core of picture 14 is made and sacrificed and pay attention to the consistency of the focusing of picture 14 cores and peripheral part for the focusing of the periphery office that makes picture 14 becomes better.
Again, about the ancillary coil of the public clear 57-45748 communique of above-mentioned reality, owing to be to utilize and the synchronous electric current of deflection current that flows through frame deflector coil, so following problem takes place.Promptly when making electron beam on vertical axis, do deflection because the effect in the magnetic field that on the horizontal direction on the trunnion axis, takes place, electron beam is subjected to excessive deflecting action in electron gum member one side of arrangement for deflecting in vertical axis, becoming is easy to the inboard wall of tube neck of impact tube funnel, so can produce the part (non-luminous part) that the electron beam of so-called pipe neck shadow can not arrive on picture.Again, this ancillary coil since its structure be with coil on magnetic and in this coil upper reaches overcurrent, pretend to correcting element becomes high price, and be difficult at a low price.Again, be that situation according to the image receiver of each manufacturer changes impedance and uses mostly about arrangement for deflecting, also different according to the flow through electric current of deflecting coil of the difference of this impedance.Thereby, be necessary that the impedance in conjunction with deflecting coil changes the specification of ancillary coil, like this poor performance of Pi Liangshengchaning for the effect that makes ancillary coil is applicable to such arrangement for deflecting.
As mentioned above, a used so far row type color picture tube has launches a row type electron gum member of making 3 electron beams of a row configuration through same horizontal plane, and be the auto-convergence mode, the arrangement for deflecting that promptly makes by forming pincushion horizontal deflection magnetic field and barrel-shaped vertical deflection magnetic field concentrates on the phosphor screen this 3 electron beam.But coma aberration can take place in this color picture tube on the picture peripheral part, and this is because the convergence of a central electron beam and an offside electron beam is inconsistent caused.Compare coma aberration in order to proofread and correct, employed in the past method is the magnetic that configuration and the back leakage field of arrangement for deflecting combine on electron gum member, or cross ancillary coil with the synchronous electric current of vertical yoke current in the electron gum member one side configuration flow of arrangement for deflecting, even and by such formation, the point of the electron beam on the phosphor screen still at picture trunnion axis two ends and vertical axis two ends distortion for being the ellipse of growing crosswise of major axis with the trunnion axis, particularly the point of one offside electron beam tilts to cross one another direction at the vertical axis two ends, thereby the focus characteristics at the picture peripheral part is significantly worsened.And the deterioration of this focus characteristics becomes the main cause of the high performance that hinders electron gum member, so the problem that exists is the raising that is unfavorable for the focus characteristics on whole image.
The present invention proposes in order to address the above problem a little, and it is that deflection aberration alleviates and prevents at the deterioration of the focus characteristics of picture periphery and color picture tube and the arrangement for deflecting thereof that all has the good focusing characteristic on whole image that its purpose is to obtain to make distortion by the point of the caused electron beam of magnetic deflection field of arrangement for deflecting.
As follows with the means that solve this problem:
At a row type electron gum member with 3 electron beams that send the do one row configuration of the same plane of the process of being formed by a central electron beam and an offside electron beam, and possess to have and make 3 electron beams that electron gum member from then on launches in the enterprising horizontal deflection of its orientation, main form the 1st deflecting coil of pincushion deflecting magntic field and make above-mentioned 3 electron beams in the enterprising horizontal deflection of direction that is orthogonal with its orientation, in the color picture tube and arrangement for deflecting thereof of the 2nd deflecting coil of main formation barrel-shaped magnetic deflection field, arrangement for deflecting and make that above-mentioned 3 electron beams focus on 3 electron beams between the electronic lens section of the electron gum member on the phosphor screen be provided with the mutual intensity in the magnetic field that each took place and a plurality of permanent magnets of allocation position set through road can compensate the caused deflection aberration of the magnetic deflection field that forms by the 2nd deflecting coil and make the quiet concentrated pincushion field of electron beam so that take place.
Again in same color picture tube and arrangement for deflecting thereof, on the process road of 3 electron beams between the electronic lens section of this arrangement for deflecting and electron gum member, a plurality of permanent magnets are set, magnetic field intensity and allocation position that this permanent magnet is set each permanent magnet mutually and produced become axial symmetry and polarity opposite so that be paired in the central shaft of arrangement for deflecting, on the direction identical with the orientation of 3 electron beams and and the direction that is orthogonal of the orientation of 3 electron beams on dispose pair of permanent magnets respectively, and generation compensates the pincushion deflecting magntic field of the caused deflection aberration of magnetic deflection field that is formed by the 2nd deflecting coil.
Again on same color picture tube except that permanent magnet, also be provided with the coma correction device of forming by the magnetic that combines with the rear portion leakage field of arrangement for deflecting.
Again, on the direction identical with the orientation of 3 electron beams and and the direction that is orthogonal of the orientation of 3 electron beams in the permanent magnet that disposed and the direction that is orthogonal of the orientation of 3 electron beams on interval between the magnetic pole of each permanent magnet of being disposed make littler than the interval in the orientation of an offside electron beam.
As mentioned above, as can compensate the caused deflection aberration of the magnetic deflection field that forms by the 2nd deflecting coil and making the quiet concentrated pincushion field of 3 electron beams so that take place at 3 electron beams between the electronic lens section of arrangement for deflecting and electron gum member through configuration permanent magnet on the road, then the pincushion field that forms of this permanent magnet is added on 3 electron beams being added to the opposite Lorentz forces of Lorentz force direction with barrel-shaped magnetic deflection field the 2nd deflecting coil on 3 electron beams, can proofread and correct because of the ellipseization of the caused electron beam of barrel-shaped magnetic deflection field of the 2nd deflecting coil and the inclination of an offside electron beam.
And for example 3 electron beams between the electronic lens section of arrangement for deflecting and electron gum member through becoming axial symmetry and polarity opposite with the central shaft that disposes pair of permanent magnets respectively and make paired arrangement for deflecting on the direction that orientation with 3 electron beams is orthogonal on the direction identical on the road with the orientation of 3 electron beams, compensate the pincushion field of the caused deflection aberration of magnetic deflection field of the 2nd deflecting coil formation with generation, then the effect of the formed pincushion field of permanent magnet that on the direction that is orthogonal in orientation, is disposed with 3 electron beams, and, can carry out more resultful correction to the inclination of an offside electron beam forming the magnetic field that will be added to the opposite Lorentz force of Lorentz force direction of the barrel-shaped magnetic deflection field that is added to the 2nd deflecting coil on the offside electron beam on the offside electron beam between the magnetic pole of permanent magnets adjacent.
In any color picture tube as and above-mentioned permanent magnet together and with and the field control element that combines of the rear portion leakage field of arrangement for deflecting, then except that the effect of above-mentioned permanent magnet, can make the convergence of whole image good by field control element.
And for example make and the direction of the orientation quadrature of 3 electron beams on interval between the magnetic pole of the permanent magnet that disposed littler at interval than the orientation of an offside electron beam, then on the zone that electron beam passes through, can form effectively magnetic field.
Followingly describe according to embodiments of the invention with reference to accompanying drawing.
Fig. 1 represents an embodiment of a row type color picture tube of auto-convergence mode.This color picture tube has the shell of being made up of panel 1 and pipe funnel 23, relative with the shadow mask that is formed with a plurality of electron beam through-holes 4 of the inboard that is contained in this panel 1, form the phosphor screen of forming by the 3 look luminescent coatings that send indigo plant, green, red 3 coloured light 5 at the inner face of panel 1.Again, the row type electron gum member 20 described later of 3 electron beams (B) that dispose through one row of the work on the same plane, (G), (R) is launched in configuration in the neck 6 of pipe funnel 2.On the boundary portion outside of pipe tapered portion 8 of funnel 2 and neck 6, be equipped with again and make 3 electron beams (B) launched from above-mentioned electron gum member 20, (G), (R) in the horizontal direction with the enterprising horizontal deflection of vertical direction and at the arrangement for deflecting 21 of the enterprising line scanning of phosphor screen.
Above-mentioned arrangement for deflecting 21 is the arrangement for deflecting of the auto-convergence mode that makes 3 electron beams (B), (G), (R) by non-homogeneous magnetic field and concentrate on phosphor screen 5, and have coiled saddle type for example, and about (Y direction) be contained in symmetrically separator 22 the inboard a pair of horizontal deflection coil 23 and for example on iron core 24 and be contained in a pair of frame deflector coil 25 in the outside of separator 22.The a pair of horizontal deflection coil 23 of this arrangement for deflecting 21 is main to be formed and makes 3 electron beams launched from above-mentioned electron gum member 20 (X-direction) pincushion deflecting magntic field of carrying out deflection in the horizontal direction, a pair of frame deflector coil 25 is then main form make 3 electron beams with the barrel-shaped magnetic deflection field of the enterprising horizontal deflection of vertical direction (Y direction) of its orientation quadrature.And said herein be mainly pincushion deflecting magntic field and be mainly barrel-shaped magnetic deflection field mean that they are respectively pincushion deflecting magntic field and barrel-shaped magnetic deflection field aspect comprehensive.
Again, in this routine color picture tube, as shown in Figure 2, on the electron gum member side end 27 of above-mentioned arrangement for deflecting 21, become axial symmetry and pair of permanent magnets 28a, 28b are housed up and down for the central shaft (Z axle) of arrangement for deflecting 21 (generally say when being contained in color picture tube with its tubular axis unanimity).This permanent magnet 28a, 28b are illustrated in figure 3 as cuboidal ceramic magnet, formed size is about interval (length) Sm=6mm between its two ends magnetic pole, thickness Hm=3mm, width D m=3.5mm, and make the surface magnetic flux density of magnetic pole central portion be about 1500 Gausses/cm
2, and be configured at permanent magnet 28a up and down, its polarity of 28b place opposite.
Again, the electron gum member 20 of the color picture tube that this is routine, as shown in Figure 4, have by 3 of the configuration of a row formula in the horizontal direction electronic lens sections that independently the 1st, the 2nd grid 31,32 electron beams of being formed of the electronics emission of negative electrode 30 and this negative electrode 30 of control form portion and the 3rd to the 6th grid 33-36 that quickened and focused on by 3 electron beams (B), (G), (R) that the electron beam portion of formation is from then on sent is formed, and on this 6th grid 36, be equipped with and assemble tube 37.38 filaments that heat for target 30 again.The the 1st, the 2nd, the 4th grid 31,32,34 of this electron gum member 20 plate electrode that is formed with the unitary construction of 3 negative electrode 30 corresponding 3 electron beam through-holes of serving as reasons constitutes, and the serve as reasons tubular electrode of the unitary construction that is formed with 3 electron beam through-holes equally of the 3rd, the 5th, the 6th grid 33,35,36 constitutes again.Particularly constitute the electron beam through-hole of each grid 33-36 of electronic lens section, with regard on Fig. 5 to shown in the 5th, the 6th grid 35,36 like that, corresponding with the configuration of above-mentioned pair of permanent magnets be not only central electron beam also become by hole 39a, 39b and an offside electron beam through- hole 40a, 40b, 40c, 40d coaxial, the interval of this side electron beam through-hole promptly pass through main lens portion an offside electron beam orientation at interval Sg for the permanent magnet (Sm=6mm) of above-mentioned size, be about 6.6mm.Around the side electron beam through-hole of the bottom of assembling tube 39, be provided with field control element again by the magnetic 41a that combines with the leakage field of the back of arrangement for deflecting, correction coma aberration that 41b forms.
, as mentioned above, as the electron gum member side end 27 of arrangement for deflecting 21 to dispose a pair of its both ends that make up and down be permanent magnet 28a, the 28b of magnetic pole, and its polarity is become oppositely, following action effect is then arranged.
(1) little and polarity is made reverse configuration than the interval in the orientation of an offside electron beam permanent magnet 28a, the 28b of the interval between magnetic pole as shown in Figure 6, corresponding with the barrel-shaped vertical deflection magnetic field 42 of frame deflector coil 3 electron beam B, G, R pass through form strong pincushion fields 43 on the zone.Thereby arrive the point of fluoroscopic 3 electron beams (B), (G), (R) by this pincushion field 43, because of being subjected to and the opposite Lorentz force of direction from the suffered Lorentz force of barrel-shaped vertical deflection magnetic field 42, this power can make its distortion for being the ellipse of major axis with the vertical direction, thereby the electron-beam point that causes according to above-mentioned barrel-shaped vertical deflection magnetic field 42 of recoverable is that the ovalization of major axis and the point of an offside electron beam produce the existing picture of inclination with the horizontal direction.
The calibration result of the electron-beam point that produced of pair of permanent magnets 28a, 28b is as disclosing at the public clear 57-45748 communique of above-mentioned reality thus, compare with crossing in the electron gum member side additional streams of arrangement for deflecting with the scheme of the ancillary coil of the synchronous electric current of the deflection current that on frame deflector coil, flows through, means for correcting is simple and small-sized, and it is good to make and produce in batches performance with low cost.
Again, when ancillary coil is arranged, owing to magnetic field is changed according to the deflection current that on frame deflector coil, flows, state as near the electron-beam point the vertical axis two ends that make picture with ancillary coil is suitably proofreaied and correct, then a little less than the magnetic field of the mid portion of vertical axis became, and can not fully proofread and correct the shape of electron-beam point.Otherwise,, then need very strong magnetic field as the shape of the electron-beam point on the vertical axis pars intermedia is suitably proofreaied and correct.This moment is because this high-intensity magnetic field not only makes near the shape of the electron-beam point the vertical axis two ends become overcorrect and deterioration, and also gives very bad influence to convergence characteristics etc.During promptly with ancillary coil the electron-beam point of whole image is made suitably to proofread and correct quite difficulty, and magnetic field owing to take place in pair of permanent magnets 28a, 28b consistently, so as near the electron-beam point in the vertical axis two ends that make picture is done best the correction, then simultaneously the electron-beam point of mid portion also can fully be proofreaied and correct, and can make the shape of electron-beam point of whole image good.
(2) this color picture tube makes to proofread and correct according to the deflection current of arrangement for deflecting by the magnetic field correction element that is located at the place, bottom that assembles tube 37 becomes possibility, thereby is that coma aberration is carried out revisal obtain good convergence around whole image to the convergence of picture peripheral part.Particularly big large colour picture tube to picture dimension, owing to the consistency of seeking to focus on or assemble from the picture central portion to periphery, very unfavorable with the ancillary coil that is difficult to picture central portion and periphery are adjusted, then can advantageously adjust with this routine permanent magnet 28a, 28b it.
(3) the strong pincushion field 43 that is produced by pair of permanent magnets 28a, 28b, among Fig. 7 shown in arrow 44,45, on an offside electron beam (B), (R), be added with the Lorentz force that these are moved along the direction of central electron beam (G).Thereby, can make it to have and to make 3 electron beams (B), (G), (R) concentrate on fluoroscopic more supercentral quiet centralized function by suitably setting the magnetization of this permanent magnet 28a, 28b.
This 3 electron beam (B), (G), (R) quiet concentrating in the existing electron gum member, as shown in Figure 8, just constitute 2 relative grid 35a of main lens, 36a, the side electron beam through-hole that its structure makes the grid 36a that makes a side is eccentric laterally with respect to the side electron beam through-hole of the opposing party's grid 35a, promptly to the direction off-centre of passing through the hole away from central electron beam, make at relative grid 35a, formed electrostatic lens 46 is asymmetrical or as shown in Figure 9 for side electron beam (B) between the 36a, (R) make at 2 relative grid 34b, formed electrostatic lens 46 run-off the straights between the 35b, and make and make 3 electron beams (B), (G), (R) concentrate on the phosphor screen a bit on.For this reason, so existing static convergence mode must have variform 2 kinds of electrodes.
But, as mentioned above, as a pair of permanent iron iron 28a, 28b be set, then has the electron beam centralized function according to this permanent magnet 28a, 28b, particularly do not need to make electron gum member have the static convergence function,, can make its side electron beam through-hole that is configured to make each the grid 33-36 that constitutes main lens form coaxial and make 3 electron beams (B), (G), (R) not concentrate on the phosphor screen as Fig. 4 and shown in Figure 5, for example, 3 electron beams (B), (G), (R) are sent abreast.Such electron gum member is compared with making electrostatic lens existing electron gum member asymmetric or that tilt, can and the assembly precision of electron gum member be improved with low-cost production's grid.
Again, this routine pair of permanent magnets 28a, 28b are by suitably selecting its size, configuration, intensity etc., occasion applicatory is not limited to 3 electron beams that send from electron gum member under the state that is parallel to each other, and also applicable to the occasion of under the state that tilts towards phosphor screen, sending 3 electron beams.
(4) the strong pincushion field 43 that is formed by pair of permanent magnets 28a, 28b is shown in the arrow of Figure 10, also is added with some distortion that Lorentz force can make electron beam for being the ellipse of major axis with the vertical direction in the picture central part.
In existing electron gum member for to by arrangement for deflecting barrel-shaped vertical deflection magnetic field produced the distortion of picture periphery electron-beam point for the horizontal direction be the ellipse of growing crosswise of major axis now as proofreading and correct, be the oval-shaped of major axis and there is the electron-beam point that makes at the picture central part to become with the vertical direction.This generally is to be formed in the vertical direction non-rotating symmetric lens different with focus strength on the horizontal direction by the structure that makes electron gum member to carry out, and the electrode that constitutes this non-rotating symmetric lens is compared with common electrode, complex structure, require high manufacturing accuracy, and the cost of electron gum member improves.
But the shape of the electron-beam point of the picture central part relevant with permanent magnet 28a, 28b means itself to possess non-rotating symmetric lens function, but do not need to make as before electron gum member to have the function of non-rotating symmetric lens, thereby can be with constituting all electrodes that the simple electrode that turns round symmetric lens form electron gum member, so can make the cost of electron gum member low, and its reliability improves.
(5) structure of ancillary coil is as forming desired magnetic field, and it is inconvenient changing shape, size etc. arbitrarily, so its whole maximization easily.But permanent magnet 28a, 28b can make variations such as pole piece spacing, the magnetization, shape at an easy rate, and can its whole formation is small-sized.Compare its degree of freedom with ancillary coil also big for allocation position again, for example also might be configured between the electron gum member side end and iron core of arrangement for deflecting, can obtain extremely good calibration result by it is configured on this position actually.
Embodiment 2
The color picture tube of present embodiment is and the same auto-convergence mode one row type color picture tube of color picture tube of embodiment 1, and particularly becomes axial symmetry and polarity opposite respectively disposing pair of permanent magnets 28a, 28b, 50a, 50b up and down and be configured to central shaft to arrangement for deflecting 21 on the electron gum member side end 27 of arrangement for deflecting 21 as shown in figure 11.These permanent magnets 28a, 28b, 50a, 50b are the cube ceramic magnet identical with the permanent magnet of embodiment 1, with the surface magnetic flux density of magnetic pole central portion of permanent magnet 28a, the 28b of configuration up and down be 1500 Gausses/cm
2The person is opposite, about the surface magnetic flux density of magnetic pole central portion of permanent magnet 50a, 50b of configuration be 1300 Gausses/cm
2, than setting of upper and lower settings little.
, as according to the electron gum member side end 27 of arrangement for deflecting 21 dispose pair of permanent magnets 28a, 28b, 50a, 50b up and down respectively, then its action effect is as follows:
Promptly pair of permanent magnets 28a, the 28b of configuration can obtain the action effect identical with the foregoing description 1 up and down.Be that this pair of permanent magnets 28a, 28b are corresponding with the barrel-shaped vertical deflection magnetic field of frame deflector coil 25 and form strong pincushion field, with opposite from the direction of the suffered Lorentz force of barrel-shaped vertical deflection magnetic field, be added with the some distortion that makes electron beam for being the oval-shaped Lorentz force of major axis, to being that the inclination of point of the ovalization of major axis and an offside electron beam is now as proofreading and correct with the horizontal direction based on the electron-beam point of vertical deflection magnetic field with the vertical direction.
Pair of permanent magnets 50a, the 50b of configuration form and pincushion horizontal deflection magnetic field 51 equidirectional pincushion fields 52 as shown in figure 12 on the other hand.Each permanent magnet 28a, 28b, 50a, 50b are owing to the direction that is configured to polarity is opposite simultaneously, so as shown in figure 13, pair of permanent magnets 50a, 50b also form magnetic field respectively between the magnetic pole of adjacent permanent 28a, 28b.This magnetic field 53 makes an offside electron beam (B), (R) thereby by the opposite Lorentz force of barrel-shaped vertical deflection magnetic field adds and this point tilts direction the inclination according to the point of an offside electron beam (B) of barrel-shaped vertical deflection magnetic field, (R) is more effectively proofreaied and correct.
For magnetic field 53 is more produced effect to the effect of this side electron beam (B), (R), the interval Sm about preferably making between the magnetic pole of a pair of permanent magnet 28a, 28b is littler than the interval Sg of an above-mentioned offside electron beam in orientation.But, as mentioned above, because this is permanent magnet 28a up and down, the pincushion field 43 that 28b forms plays and makes an offside electron beam (B), (R) to the close effect of central electron beam (G), and left and right sides permanent magnet 50a, the pincushion field 52 that 50b forms plays and makes an offside electron beam (B), (R) away from the effect of central electron beam (G), so the electron gum member that is difficult to as the color picture tube of above-mentioned embodiment 1 and sends parallel electron beam is combined, and preferably with an offside electron beam is had to the fluoroscopic centroclinal electron gum member of picture now combine.
Again, even with regard to coma aberration, also the color picture tube with embodiment 1 is identical, and the convergence by the field control element that is arranged on the electron gum member is proofreaied and correct the picture periphery makes it to become the color picture tube that does not have coma aberration.
Again, the color picture tube of present embodiment also is by variations such as the interval between the magnetic pole that makes each permanent magnet 28a, 28b, 50a, 50b, the magnetization, shapes, thereby can form desired magnetic field at an easy rate, and integral body can be constituted small-sized.Again, this allocation position also is that the degree of freedom is big, for example is configured between the electron gum member side end and iron core of arrangement for deflecting, thereby obtains extremely good calibration result.
Dispose pair of permanent magnets up and down or up and down at the electron gum member side end of arrangement for deflecting in the foregoing description 1,2, and the electron beam that this permanent magnet can be positioned at the electron gum member side with respect to arrangement for deflecting also can leave arrangement for deflecting and independently be provided with by the zone.
Figure 14 electron gun member 20 is the biopotential type electron gum member, it forms portion by electron beam and electronic lens section is formed, electron beam formation portion then by do in the horizontal direction 3 of a row configuration independently negative electrode 30 and 31,32 of the 1st, the 2nd grids controlling the electronics emission of this negative electrode 30 form, electronic lens section then is made up of the 3rd, the 4th grid 33,34 that makes 3 electron beams that send through this electron beam portion of formation quicken to focus on.Be provided with in the field control element of forming by magnetic 41a, 41b around the side electron beam through-hole of the bottom of the convergence tube on being contained in the 4th grid 34 that constitutes this electronic lens section 37, assemble on the medial surface of tube 37 at this, dispose pair of permanent magnets 28a, 28b up and down, and be configured to the central shaft 55 of electron gum member 20 is the axial symmetry and the pole reversal that the interval between the magnetic pole of each permanent magnet 28a, 28b is littler than the interval in the orientation of an offside electron beam that passes through electronic lens section.Formation and the configuration of this permanent magnet 28a, 28b are corresponding with the configuration of the permanent magnet of the foregoing description 1.
Again, in Figure 15 with regard to isomorphic electron gum member 20, when on this assembles the bottom of tube 37, the field control element of being made up of magnetic 41a, 41b being set, on the medial surface of assembling tube 37, all dispose pair of permanent magnets 28a, 28b, 50a, 50b up and down, and be configured to the central shaft 55 of electron gum member 20 is the axial symmetry and the pole reversal.Interval between the magnetic pole of permanent magnet 28a, the 28b that dispose this moment up and down is littler than the interval in the orientation of an offside electron beam that passes through electronic lens section.Again the surface magnetic flux density of this permanent magnet 28a, 28b make than about the surface magnetic flux density of permanent magnet 50a, 50b of configuration big, and form the strong pincushion magnet of the formed magnetic field intensity of permanent magnet 50a, 50b than configuration about thus.Formation and the configuration of these permanent magnets 28a, 28b, 50a, 50b are corresponding with the configuration of the permanent magnet of the foregoing description 2.
Even configuration permanent magnet 28a, 28b or permanent magnet 28a, 28b, 50a, 50b on electron gum member 20 so also can make and can obtain the effect same with distinguishing corresponding the foregoing description 1,2.
And, in the foregoing description 3, the inboard of assembling the tube head disposed pair of permanent magnets up and down or up and down, and this permanent magnet is also configurable on the grid of the main lens portion that for example constitutes electron gum member.But work on the main lens of electron gum member as the pincushion field that permanent magnet forms this moment, then owing to the caused coma aberration in center that main lens takes place not pass through because of the side electron beam, so be expected permanent magnet configuration can not be arrived on the position of electronic lens section in the pincushion field.
Again, the present invention is not limited at the electron gum member shown in the various embodiments described above, and is also applicable to the color picture tube that has other various electron gum members, especially also identical when electron gum member configuration permanent magnet. Even again with regard to field control element, also be not limited to the coma correction element of the various embodiments described above, can select various shapes according to size or the system situation of color picture tube and arrangement for deflecting.
Formation make by the one row configuration of conplane do 3 electron beams its orientation and and near the electron gum member side end of the arrangement for deflecting of the magnetic deflection field of the enterprising horizontal deflection of direction of this orientation quadrature or be positioned at respect to the main lens section of electron gum member the electrode on fluorescence side, as disposing up and down or up and down the pair of permanent magnets that can form the pincushion field, then can be added to by the correction deflector magnetic field, pincushion field that this permanent magnet forms the deflection aberration on the electron beam, and the focus characteristics on the picture periphery is improved.
Fig. 1 is the key diagram of embodiments of the invention to Figure 15;
Fig. 1 is the pie graph as a row type color picture tube of the auto-convergence mode of its 1st embodiment,
Fig. 2 is the perspective view that is illustrated in the configuration of the pair of permanent magnets up and down on the electron gum member side end of its arrangement for deflecting,
Fig. 3 is the perspective view of the shape of this permanent magnet of expression,
Fig. 4 (a) reaches the figure of the formation that (b) is respectively the electron gum member of representing above-mentioned color picture tube and represents the figure of the configuration of its field control element,
Fig. 5 is the figure of the formation of the electronic lens section of this electron gum member of expression,
Fig. 6 is for up and down giving the figure of effect of the point of electron beam in the pincushion field that forms of pair of permanent magnets in order to explanation,
Fig. 7 is the figure of the quiet concentrated effect of the pincushion field that forms in order to a pair of up and down permanent magnet of explanation equally,
Fig. 8 and Fig. 9 represent respectively for the figure for the formation of the quiet concentrated conditional electronic lens section of obtaining electron gum member shown in comparing with the quiet concentrated effect of a pair of up and down permanent magnet,
Figure 10 is the figure in order to the non-rotating symmetric lens function of the pincushion field of pair of permanent magnets formation about the explanation,
Figure 11 is the perspective view of expression as the configuration of each pair of permanent magnets up and down on the electron gum member side end of the arrangement for deflecting of the major part formation of the 2nd embodiment,
Figure 12 is the figure in order to the pincushion field that this pair of right and left permanent magnet formation is described,
Figure 13 is in order to the explanation figure of the pincushion field of each a pair of permanent magnet up and down,
Figure 14 (a) and (b) be respectively and dispose as the sectional drawing of the formation of the electron gum member of the pair of permanent magnets up and down of the main composition of the 3rd embodiment and the expression figure of the configuration of each pair of permanent magnets and field control element up and down,
Figure 15 (a) and (b) be respectively at the sectional drawing of the formation of the electron gum member that disposes pair of permanent magnets up and down and the expression figure of the configuration of each pair of permanent magnets and magnet control element up and down,
Figure 16 is the pie graph of a row type color picture tube of existing auto-convergence mode,
Figure 17 is the perspective view that expression is contained in the formation of the arrangement for deflecting on this color picture tube,
Figure 18 is the key diagram of the shape of the point of the electron beam that made it deflection by the homogeneous magnetic field of arrangement for deflecting,
Figure 19 is the key diagram of the shape of the point of the electron beam that made it deflection by the non-homogeneous magnetic field of arrangement for deflecting,
Figure 20 (a) reaches and (b) is respectively in order to pincushion horizontal deflection magnetic field and the barrel-shaped vertical deflection magnetic field figure to the effect of electron beam to be described.
5 ... face 20 ... electron gum member
21 ... arrangement for deflecting 23 ... horizontal deflection coil
24 ... iron core 25 ... frame deflector coil
27 ... the electron gum member side end of arrangement for deflecting
28a, 28b ... pair of permanent magnets up and down
31 ... the 1st grid 32 ... the 2nd grid
33 ... the 3rd grid 34 ... the 4th grid
35 ... the 5th grid 36 ... the 6th grid
37 ... assemble the tube head
39a, 39b ... central electron beam passes through the hole
40a-40d ... the side electron beam through-hole
41a, 41b ... magnetic
42 ... barrel-shaped vertical deflection magnetic field
43 ... the pincushion field that forms of pair of permanent magnets up and down
50a, 50b ... the pair of right and left permanent magnet
51 ... pincushion horizontal deflection magnetic field
52 ... the pincushion field that the pair of right and left permanent magnet forms
53 ... the magnetic field that between adjacent permanent, forms
B, R ... one offside electron beam
G ... central electron beam.
Claims (7)
1, a kind of color picture tube, have a row type electron gum member 20 and an arrangement for deflecting 21, above-mentioned electron gum member 20 has formation by a central electron beam G and an offside electron beam R, the electron beam formation portion 30 of the electron beam that G forms, 31,32, and the electronic lens section 33 that 3 electron beams are focused on, 34,35,36, and launch 3 electron beams of doing a row configuration through same plane, above-mentioned arrangement for deflecting 21 possesses makes above-mentioned 3 electron beams in the enterprising horizontal deflection of its orientation, main form the 1st deflecting coil 23 of pincushion deflecting magntic field and make above-mentioned 3 electron beams in the enterprising horizontal deflection of direction that is orthogonal with its orientation, main the 2nd deflecting coil 25 that forms barrel-shaped magnetic deflection field, it is characterized in that the magnetic deflection field that forms with above-mentioned the 2nd deflecting coil 25 is corresponding, electronic lens section 33 at above-mentioned arrangement for deflecting 21 and above-mentioned electron gum member 20,34,35, above-mentioned 3 electron beams between 36 through having a plurality of permanent magnets on the road, and the intensity in the magnetic field that its each permanent magnet is taken place and allocation position are set mutually so that take place the caused deflection aberration of magnetic deflection field that is formed by above-mentioned the 2nd deflecting coil 25 are compensated, and make above-mentioned 3 electron beams carry out quiet concentrated pincushion field.
2, a kind of color picture tube, have a row type electron gum member 20 and an arrangement for deflecting 21, above-mentioned electron gum member 20 has formation by a central electron beam G and an offside electron beam R, the electron beam formation portion 30 of 3 electron beams that G formed, 31,32, and the electronic lens section 33 that 3 electron beams are focused on, 34,35,36, and launch 3 electron beams of doing a row configuration through same plane, above-mentioned arrangement for deflecting 21 possesses makes above-mentioned 3 electron beams in the enterprising horizontal deflection of its orientation, main form the 1st deflecting coil 23 of pincushion deflecting magntic field and make the enterprising horizontal deflection of direction that above-mentioned 3 electron beams are orthogonal in its orientation, main the 2nd deflecting coil 25 that forms barrel-shaped magnetic deflection field, it is characterized in that the magnetic deflection field that forms with above-mentioned the 2nd deflecting coil 25 is corresponding, electronic lens section 33 at above-mentioned arrangement for deflecting 21 and above-mentioned electron gum member 20,34,35, have a plurality of permanent magnets on the process road of above-mentioned 3 electron beams between 36, these a plurality of permanent magnets are axial symmetry to the central shaft of above-mentioned arrangement for deflecting 21, and make the pole reversal, and on the direction identical with the orientation of above-mentioned 3 electron beams and and the direction that is orthogonal of the orientation of above-mentioned 3 electron beams on dispose pair of permanent magnets respectively, and the intensity in the magnetic field that each permanent magnet is taken place and allocation position sets mutually so that the pincushion field that takes place the caused deflection aberration of magnetic deflection field that is formed by the 2nd deflecting coil 25 is compensated.
3, color picture tube as claimed in claim 1 or 2 is characterized in that having the aberration compensation device that the magnetic that combined by the rear portion leakage field with arrangement for deflecting is formed.
4, color picture tube as claimed in claim 1 or 2, it is characterized in that and the direction that is orthogonal of the orientation of 3 electron beams on interval between each magnetic pole of the pair of permanent magnets of being arranged littler than the interval of offside electron beam in orientation.
5, a kind of arrangement for deflecting, be contained in and make 3 electron beams of launching from a row type electron gum member on the color picture tube of enterprising horizontal deflection scanning of phosphor screen and reproduced picture, and possess and make above-mentioned 3 electron beams in the enterprising horizontal deflection of its orientation, main form the 1st deflecting coil 23 of pincushion deflecting magntic field and make above-mentioned 3 electron beams in the enterprising horizontal deflection of direction that is orthogonal with its orientation, main the 2nd deflecting coil 25 that forms barrel-shaped magnetic deflection field, it is characterized in that the magnetic deflection field that forms with above-mentioned the 2nd deflecting coil 25 is corresponding, electronic lens section 33 at above-mentioned arrangement for deflecting 21 and above-mentioned electron gum member 20,34,35, above-mentioned 3 electron beams between 36 through having a plurality of permanent magnets on the road, and the intensity in the magnetic field that its each permanent magnet is taken place and allocation position are set mutually so that take place the caused deflection aberration of magnetic deflection field that is formed by above-mentioned the 2nd deflecting coil 25 are compensated, and make above-mentioned electron beam carry out quiet concentrated pincushion field.
6, a kind of arrangement for deflecting, be contained in and make 3 electron beams of launching from a row type electron gum member on the color picture tube of enterprising horizontal deflection scanning of phosphor screen and reproduced picture, and possess and make above-mentioned 3 electron beams in the enterprising horizontal deflection of its orientation, main form the 1st deflecting coil 23 of pincushion deflecting magntic field and make the enterprising horizontal deflection of direction that above-mentioned 3 electron beams are orthogonal in its orientation, main the 2nd deflecting coil 25 that forms barrel-shaped magnetic deflection field, it is characterized in that the magnetic deflection field that forms with above-mentioned the 2nd deflecting coil 25 is corresponding, electronic lens section 33 at above-mentioned arrangement for deflecting 21 and above-mentioned electron gum member 20,34,35, have a plurality of permanent magnets on the process road of above-mentioned 3 electron beams between 36, these a plurality of permanent magnets are axial symmetry to the central shaft of above-mentioned arrangement for deflecting 21, and make the pole reversal, and on the direction identical with the orientation of above-mentioned 3 electron beams and and the direction that is orthogonal of the orientation of above-mentioned 3 electron beams on dispose pair of permanent magnets respectively, the intensity and the allocation position that reach the magnetic field that each permanent magnet is taken place are set mutually, so that the pincushion field that generation compensates the caused deflection aberration of magnetic deflection field that is formed by the 2nd deflecting coil 25.
7, as claim 5 or 6 described arrangements for deflecting, it is characterized in that and the direction that is orthogonal of the orientation of 3 electron beams on interval between each magnetic pole of the pair of permanent magnets that disposed littler than the interval of offside electron beam in orientation.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP156974/88 | 1988-06-27 | ||
| JP88-156974 | 1988-06-27 | ||
| JP15697488 | 1988-06-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1039148A true CN1039148A (en) | 1990-01-24 |
| CN1017483B CN1017483B (en) | 1992-07-15 |
Family
ID=15639400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN89104457A Expired CN1017483B (en) | 1988-06-27 | 1989-06-26 | Colour image tube and deflection device |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0348912B1 (en) |
| KR (1) | KR920000940B1 (en) |
| CN (1) | CN1017483B (en) |
| DE (1) | DE68927809T2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3034906B2 (en) * | 1990-05-10 | 2000-04-17 | 株式会社東芝 | Color picture tube and deflection device |
| CN1155985C (en) * | 1998-11-10 | 2004-06-30 | 松下电器产业株式会社 | Deflection yoke and color picture tube comprising the same |
| KR20240065673A (en) | 2022-11-07 | 2024-05-14 | 서안동농업협동조합 | Method for producing kimchi with increased antioxidant properties containing grains and hemp seeds and kimchi with increased antioxidant properties prepared therefrom |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1199891B (en) * | 1960-03-31 | 1965-09-02 | Telefunken Patent | Arrangement for the magnetic deflection of cathode rays in cathode ray tubes |
| NL8104735A (en) * | 1980-12-05 | 1982-07-01 | Philips Nv | CATHODE SPRAY TUBE WITH A DEFLECTION UNIT CONTAINING PERMANENT MAGNETS WHICH GENERATES A STATIC MULTIPOLO FIELD FOR SIMULATING A MODULATION OF THE DYNAMIC DEFLECTION FIELD. |
| JPS59101745A (en) * | 1982-12-02 | 1984-06-12 | Toshiba Corp | Color picture tube |
| NL8601091A (en) * | 1986-04-29 | 1987-11-16 | Philips Nv | COLOR IMAGE TUBE WITH COMA CORRECTION. |
| CA1311793C (en) * | 1987-08-28 | 1992-12-22 | Rca Licensing Corporation | Video apparatus having self-converging pattern-corrected deflection yoke |
-
1989
- 1989-06-26 CN CN89104457A patent/CN1017483B/en not_active Expired
- 1989-06-26 KR KR1019890008785A patent/KR920000940B1/en not_active IP Right Cessation
- 1989-06-27 DE DE68927809T patent/DE68927809T2/en not_active Expired - Fee Related
- 1989-06-27 EP EP89111701A patent/EP0348912B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1017483B (en) | 1992-07-15 |
| KR920000940B1 (en) | 1992-01-31 |
| KR900000962A (en) | 1990-01-31 |
| EP0348912A2 (en) | 1990-01-03 |
| EP0348912B1 (en) | 1997-03-05 |
| DE68927809T2 (en) | 1997-09-04 |
| DE68927809D1 (en) | 1997-04-10 |
| EP0348912A3 (en) | 1991-07-10 |
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| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
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