CN1118850C - Biased rotating coil and color kinescope - Google Patents
Biased rotating coil and color kinescope Download PDFInfo
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- CN1118850C CN1118850C CN95115899A CN95115899A CN1118850C CN 1118850 C CN1118850 C CN 1118850C CN 95115899 A CN95115899 A CN 95115899A CN 95115899 A CN95115899 A CN 95115899A CN 1118850 C CN1118850 C CN 1118850C
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Abstract
A deflection yoke for a cathode ray tube can correct both the pincushion distortion at the upper and lower edges of the screen and the misconvergence of the screen at the same time by the deflection yoke itself without the need for a correction magnet. The deflection yoke comprises a saddle shaped horizontal deflection coil 1, a saddle shaped vertical deflection coil 2 located outside the horizontal deflection coil 1, and a high permeability core 3 located outside the vertical deflection coil. The core 3 has notch portions 7 at the center parts of the upper and lower portions of the screen side end.
Description
The present invention relates to deflecting coil and the chromoscope of this deflecting coil is housed.
On display monitor, in the employed chromoscope as with the window be representative in recent years, high at the frequency of face periphery display message, so requirement can show precise image in this part.Raster distortion is the key factor of decision face periphery image quality, for the Distribution of Magnetic Field of deflecting coil own determine the face upper and lower side that it is fine or not the pincushion deflection distortion (hereinafter to be referred as: pincushion distortion) or the content that requires of raster distortion become very strict.The convergence of face periphery simultaneously requires content also to become very strict.
Yet, deflecting coil such as Figure 22 of the auto-convergence mode of on the chromoscope that is equipped with in-line arrangement electron gun, installing and using, shown in 23, its horizontal deflection winding 24 by coiled saddle type, the high permeability magnetic core 26 that is arranged on the saddle type vertical deflection winding 25 in horizontal deflection winding 24 outsides and is arranged on vertical deflection winding 25 outsides are formed.And in the deflecting coil of this auto-convergence mode, the magnetic field that horizontal deflection winding 24 produces forms the pincushion field, the magnetic field that vertical deflection winding 25 produces forms barrel field, so that the pincushion distortion of face upper and lower side and the misconvergence on the face obtain compensation simultaneously.
Along with the increase of picture tube radius of curvature, as shown in figure 24 " positive anisotropic astigmatism " is created on the face in recent years, and the pincushion distortion of face upper and lower side also has increase tendency simultaneously.
Here the relevant positive anisotropic astigmatism of explanation.In Figure 24, B, G, R represent that 3 electron beam emission sources seeing from this side of face, dotted line 27 are the blue figure that produces from the electron beam that electron beam emission source B penetrates, the red figure that single-point line 28 produces for the electron beam that penetrates from electron beam emission source R, the green figure that solid line 29 produces for the electron beam that penetrates from electron beam emission source G.In the 1st quadrant of face upper right side, green relatively figure (solid line) 29, red figure (single-point line) 28 and blue figure (dotted line) 27 appear at below and top respectively, and (single-point line) 28 of red figure and blue figure (dotted line) 27 intersect the X font on vertical axis.And in upper left second quadrant of face, the relation of (single-point line) 28 of red figure and blue figure (dotted line) 27 is opposite with the 1st quadrant.Below face, be that benchmark is in the line symmetric relation with the trunnion axis.This is called " positive anisotropic astigmatism ".
In traditional auto-convergence mode deflecting coil, be positive anisotropic astigmatism on the compensation face, if the magnetic field that vertical deflection winding 25 is produced becomes stronger barrel field, then the pincushion distortion of face upper and lower side further increases.In addition, in order to compensate the pincushion distortion of face upper and lower side, if the magnetic field that horizontal deflection winding 24 is produced becomes stronger pincushion field, then positive anisotropic astigmatism has further increase tendency, therefore, the pincushion distortion of face upper and lower side and the misconvergence on the face can not be compensated simultaneously.
With regard to the deflection winding that constitutes deflecting coil, though total relevant of the Distribution of Magnetic Field from its fluorescence screen side to electron gun side with misconvergence compensation on the face, but with regard to the pincushion distortion of face upper and lower side, the Distribution of Magnetic Field of the fluorescence screen side of deflection winding is relevant therewith.Its reason is, when making the electron beam deflecting, in deflection around also littler than distance at electron gun side around the distance of fluorescence screen side electron beam and deflection winding, and fluorescence screen side at the deflection winding, because electron beam is advanced along the end of magnetic line of force bending, so the Distribution of Magnetic Field effect of the fluorescence screen side of the pincushion distortion of generation face upper and lower side becomes big.
From as can be known above-mentioned,, must strengthen the pincushion field of deflection winding fluorescence screen side in order to utilize the pincushion distortion of deflecting coil compensation face upper and lower side.In addition, in order to compensate the misconvergence on the face that this state produces, must strengthen near the pars intermedia except that the fluorescence screen side of deflection winding and the barrel field of electron gun side.
In order to respond these requirements, proposed by compensating magnet being set in deflecting coil fluorescence screen side top and the bottom, seek the compensation of aforementioned face upper and lower side pincushion distortion and the method (spy holds flat 2-204947 communique) that the meeting coalescence is deposited.
In the deflecting coil of auto-convergence mode, in order to remove face upper and lower side raster distortion in design by deflecting coil Distribution of Magnetic Field itself, will there be strong pincushion distortion (with reference to Figure 14) in the magnetic field that horizontal deflection winding 24 produces.Yet, when comprising 4 pincushion distortions of as many as here, produce and be referred to as the wing high order of gull raster distortion up and down.This gull is wing visually to make extremely bad change of image quality, so must avoid.
For complying with these requirements, in United States Patent (USP) 4233582, proposed concavity to be set by fluorescence screen side lip portions middle body at the horizontal deflection winding, reduce the wing method of gull of face upper and lower side thus.And in United States Patent (USP) 4229720, proposed to utilize the fluorescence screen side lip portions shape of horizontal deflection winding is made polygon, reduced the wing method of gull of face upper and lower side.In addition, open in the clear 63-289748 communique, proposed to reduce the wing method of gull of face upper and lower side by the compensating magnet that has protuberance in the configuration of fluorescence screen side top and the bottom the spy.
But open in the flat 2-204947 communique in the disclosed method the spy, there are the following problems, because compensating magnet is sought the compensation of face upper and lower side pincushion distortion and the meeting coalescence is deposited by being provided with, so increased number of elements, the magnetization discreteness of the compensating magnet in the manufacturing process is also big.
In the disclosed method, be provided with in the Sheet Metal Forming Technology of spill at horizontal deflection winding fluorescence screen side lip portions middle body in United States Patent (USP) 4233582, the winding wire rod has increased because of being subjected to the unusual possibility that is damaged that stretches.If spill is done too deeply, because when installing on the picture tube, spill withstands on the cone portion of picture tube, remove the wing enough spills of gull to deflecting coil so be difficult to form, exist the problem on making and designing.Also have in United States Patent (USP) 4229720 disclosed methods, it is made the problem of going up and is, in the polygonal top corner portion of fluorescence screen side lip portions of horizontal deflection winding, the possibility that sustains damage because of winding wire rod abnormal deformation increases.Open disclosed method in the clear 63-289748 communique the spy in addition, its problem is because compensating magnet is set number of elements is increased, and the magnetization discreteness of compensating magnet to strengthen in the manufacturing process.
The present invention is for solving the foregoing problems of conventional art, and its purpose is to provide a kind of like this deflecting coil, need not to be provided with compensating magnet, only just can compensate the pincushion distortion of face upper and lower side and the misconvergence on the face simultaneously with deflecting coil self.The object of the invention also is to provide a kind of like this deflecting coil, does not damage the winding wire rod of fluorescence screen side lip portions when the horizontal deflection winding winds the line, and does not also increase number of elements, and it is wing fully to reduce gull.The object of the invention also is to provide a kind of chromoscope, and null grating pincushion distortion simultaneously and misconvergence improve image quality.The object of the invention also is to provide a kind of chromoscope in addition, and it is wing fully to reduce gull, improves image quality.
To achieve these goals, first scheme according to auto-convergence mode deflecting coil of the present invention, at least comprise, saddle type horizontal deflection winding, be arranged on the saddle type vertical deflection winding in the aforementioned saddle type horizontal deflection winding outside and be arranged on the magnetic core in the aforementioned saddle type vertical deflection winding outside, it is characterized in that aforementioned magnetic core big about the magneto resistive ratio of the central portion up and down of phosphor screen one side.
First scheme of the deflecting coil of the invention described above can be done following improvement respectively:
Central portion up and down at phosphor screen one side of magnetic core is provided with notch;
Approaching about the wall ratio of the central portion up and down of phosphor screen one side of magnetic core;
Little material constituted about the central portion up and down of phosphor screen one side of magnetic core compared with permeability.
Alternative plan according to auto-convergence mode deflecting coil of the present invention, at least comprise, saddle type horizontal deflection winding, be arranged on the saddle type vertical deflection winding in the aforementioned saddle type horizontal deflection winding outside and be arranged on the magnetic core in the aforementioned saddle type vertical deflection winding outside, it is characterized in that big about phosphor screen one side of aforementioned magnetic core and the magneto resistive ratio of central portion up and down of electron gun one side.
The alternative plan of the deflecting coil of the invention described above can be done following improvement respectively:
At phosphor screen one side of magnetic core and the central portion up and down of electron gun one side notch is set;
Approaching about phosphor screen one side of magnetic core and the wall ratio of central portion up and down of electron gun one side;
Little material constituted about phosphor screen one side of magnetic core and the central portion up and down of electron gun one side compared with permeability.
First scheme that the chromoscope of auto-convergence formula deflecting coil is housed according to the present invention comprises at least, by face glass and connect the vacuum tube that the glass neck at face glass rear portion is formed; Be arranged on the electron gun at aforementioned vacuum tube rear portion; Be arranged on the saddle type horizontal deflection winding on the periphery of aforementioned vacuum tube rear portion; Be arranged on the saddle type vertical deflection winding in the aforementioned saddle type horizontal deflection winding outside; Be arranged on the magnetic core in the aforementioned saddle type vertical deflection winding outside, it is characterized in that, aforementioned magnetic core big about the magneto resistive ratio of the central portion up and down of phosphor screen one side.
First scheme of the chromoscope of the invention described above can be done following improvement respectively:
Central portion up and down at phosphor screen one side of magnetic core is provided with notch;
Magnetic core approaching about the wall ratio of the central portion up and down of phosphor screen one side;
Magnetic core little material about the central portion up and down of phosphor screen one side compares with permeability constitutes.
According to the alternative plan that the chromoscope of auto-convergence formula deflecting coil is housed of the present invention, comprise at least, by face glass and connect the vacuum tube that the glass neck at face glass rear portion is formed; Be arranged on the electron gun at aforementioned vacuum tube rear portion; Be arranged on the saddle type horizontal deflection winding on the periphery of aforementioned vacuum tube rear portion; Be arranged on the saddle type vertical deflection winding in the aforementioned saddle type horizontal deflection winding outside; Be arranged on the magnetic core in the aforementioned saddle type vertical deflection winding outside, it is characterized in that, aforementioned magnetic core big about the magneto resistive ratio of the central portion up and down of phosphor screen one side and electron gun one side.
The alternative plan of the chromoscope of the invention described above can be done following improvement respectively:
At phosphor screen one side of magnetic core and the central portion up and down of electron gun one side notch is set;
Magnetic core approaching about the wall ratio of central portion up and down of phosphor screen one side and electron gun one side;
Magnetic core little material about the central portion up and down of phosphor screen one side and electron gun one side compares with permeability constitutes.
Third party's case according to auto-convergence mode deflecting coil of the present invention, at least comprise, saddle type horizontal deflection winding, be arranged on the saddle type vertical deflection winding and the magnetic core that is arranged on the aforementioned saddle type vertical deflection winding outside in the aforementioned saddle type horizontal deflection winding outside, it is characterized in that, the former magnetic core of stating is provided with position big about a pair of magneto resistive ratio at least in the above scope of 35 degree of trunnion axis as benchmark of phosphor screen one side.
Third party's case of the deflecting coil of the invention described above can be done following improvement respectively:
In with trunnion axis the 35 degree above scope as benchmark of magnetic core, pair of notches portion is set at least at phosphor screen one side;
In with trunnion axis the 35 degree above scope as benchmark of magnetic core, the position of a pair of wall thickness reduction is set at least at phosphor screen one side;
In with trunnion axis the 35 degree above scope as benchmark of magnetic core, a pair of position that constitutes with material little about the permeability ratio is set at least at phosphor screen one side.
According to third party's case that the chromoscope of auto-convergence formula deflecting coil is housed of the present invention, comprise at least, by face glass and connect the vacuum tube that the glass neck at face glass rear portion is formed; Be arranged on the electron gun at aforementioned vacuum tube rear portion; Be arranged on the saddle type horizontal deflection winding on the periphery of aforementioned vacuum tube rear portion; Be arranged on the saddle type vertical deflection winding in the aforementioned saddle type horizontal deflection winding outside; Be arranged on the magnetic core in the aforementioned saddle type vertical deflection winding outside, it is characterized in that, the former magnetic core of stating is provided with position big about a pair of magneto resistive ratio at least in the above scope of 35 degree of trunnion axis as benchmark of phosphor screen one side.
Third party's case of the chromoscope of the invention described above can be done following improvement respectively:
In with trunnion axis the 35 degree above scope as benchmark of magnetic core, pair of notches portion is set at least at phosphor screen one side;
In with trunnion axis the 35 degree above scope as benchmark of magnetic core, the position that a pair of wall thickness reduces is set at least at phosphor screen one side;
In with trunnion axis the 35 degree above scope as benchmark of magnetic core, a pair of position that constitutes with material little about the permeability ratio is set at least at phosphor screen one side.
Cubic case according to auto-convergence mode deflecting coil of the present invention, at least comprise, saddle type horizontal deflection winding, be arranged on the saddle type vertical deflection winding and the magnetic core that is arranged on the aforementioned saddle type vertical deflection winding outside in the aforementioned saddle type horizontal deflection winding outside, it is characterized in that, the former magnetic core of stating is provided with position little about a pair of magneto resistive ratio at least in the above scope of 35 degree of trunnion axis as benchmark of phosphor screen one side.
The cubic case of the deflecting coil of the invention described above can be done following improvement respectively:
In with trunnion axis the 35 degree above scope as benchmark of magnetic core, the position that a pair of wall thickness thickens is set at least at phosphor screen one side;
In with trunnion axis the 35 degree above scope as benchmark of magnetic core, a pair of position that constitutes with material big about the permeability ratio is set at least at phosphor screen one side.
According to the cubic case that the chromoscope of auto-convergence formula deflecting coil is housed of the present invention, at least comprise, by face glass and connect the vacuum tube that the glass neck at face glass rear portion is formed, be arranged on the electron gun at aforementioned vacuum tube rear portion, be arranged on the saddle type horizontal deflection winding of aforementioned vacuum tube rear portion periphery, be arranged on the saddle type vertical deflection winding in the aforementioned saddle type horizontal deflection winding outside, be arranged on the magnetic core in the aforementioned saddle type vertical deflection winding outside, it is characterized in that, the former magnetic core of stating is provided with position little about a pair of magneto resistive ratio at least in the above scope of 35 degree of trunnion axis as benchmark of phosphor screen one side.
The cubic case of the chromoscope of the invention described above can be done following improvement respectively:
In with trunnion axis the 35 degree above scope as benchmark of magnetic core, the position that a pair of wall thickness thickens is set at least at phosphor screen one side;
In with trunnion axis the 35 degree above scope as benchmark of magnetic core, a pair of position that constitutes with material big about the permeability ratio is set at least at phosphor screen one side.
First scheme according to aforementioned deflecting coil of the present invention, the deflecting coil of this auto-convergence mode comprises at least, saddle type horizontal deflection winding, be arranged on the saddle type vertical deflection winding in the aforementioned saddle type horizontal deflection winding outside and be arranged on the magnetic core in the aforementioned saddle type vertical deflection winding outside, owing to have aforementioned magnetic core big feature about the magneto resistive ratio of the central portion up and down of phosphor screen one side, the magnetic line of force in the magnetic field that the horizontal deflection winding produces is difficult to by the up and down central portion of magnetic core at phosphor screen one side.Therefore, the pincushion field in phosphor screen one side that magnetic core and horizontal deflection winding produce is curved shape, to avoid the central portion up and down of magnetic core at phosphor screen one side, is eager to excel compared with using under traditional magnetic core and the horizontal deflection winding situation.That is that the horizontal deflection winding has become by force in the pincushion field of phosphor screen one side.For this reason, the pincushion distortion that compensating magnet just can compensate the face upper and lower side is not set.Its result, number of elements reduces, and manufacturing cost descends, and also need not consider the magnetized discreteness of compensating magnet in manufacturing process simultaneously.Strengthen levelling by the barrel field that the vertical deflection winding is produced, owing to the misconvergence on the face can be compensated, so only can compensate the pincushion distortion of face upper and lower side and the misconvergence on the face simultaneously with deflecting coil self.
In first scheme of aforementioned deflecting coil of the present invention, if adopt the improvement that otch is set at the central portion up and down of phosphor screen one side of magnetic core, magnetic core big about the magneto resistive ratio of the central portion up and down of phosphor screen one side then.
In first scheme of aforementioned deflecting coil of the present invention, if the improvement of adopting magnetic core to approach about the wall ratio of the central portion up and down of phosphor screen one side is then big about the magneto resistive ratio of magnetic core central portion about phosphor screen one side.
In aforementioned deflecting coil first scheme of the present invention, if adopt magnetic core phosphor screen one side up and down central portion with permeability than about the improvement that constitutes of little material, then magnetic core big about the magneto resistive ratio of the central portion up and down of phosphor screen one side.
Alternative plan according to aforementioned deflecting coil of the present invention, this auto-convergence mode deflecting coil comprises at least, saddle type horizontal deflection winding, be arranged on the saddle type vertical deflection winding in the aforementioned saddle type horizontal deflection winding outside, be arranged on the magnetic core in the aforementioned saddle type vertical deflection winding outside, by the big feature of aforementioned magnetic core about the magneto resistive ratio of the central portion up and down of phosphor screen one side and electron gun one side, reduce emerging from the deflecting coil in the magnetic field that the horizontal deflection winding produces.Its result, the same with aforementioned deflecting coil first party case situation of the present invention, only can compensate the pincushion distortion of face upper and lower side and the misconvergence on the face simultaneously with deflecting coil self, although do not add simultaneously and eliminate winding and magnet, also can seek to reduce the leakage field of phosphor screen one side and electron gun one side.
First scheme according to aforementioned chromoscope of the present invention, the chromoscope that auto-convergence formula deflecting coil is housed comprises at least, by face glass and connect the vacuum tube that the glass neck at this face glass rear portion is formed, the electron gun that is provided with at aforementioned vacuum tube rear portion, be arranged on the saddle type horizontal deflection winding on the periphery of aforementioned vacuum tube rear portion, be arranged on the saddle type vertical deflection winding in the aforementioned saddle type horizontal deflection winding outside, be arranged on the magnetic core in the aforementioned saddle type vertical deflection winding outside, utilize the big feature of aforementioned magnetic core about the magneto resistive ratio of the central portion up and down of phosphor screen one side, can function as follows.Promptly by using the deflecting coil of aforementioned first scheme of the present invention can compensate the pincushion distortion of face upper and lower side and the misconvergence on the face owing to resemble simultaneously above-mentioned, so that the image quality of chromoscope improved.
Alternative plan according to aforementioned chromoscope of the present invention, the chromoscope that auto-convergence formula deflecting coil is housed comprises at least, by face glass and connect the vacuum tube that the glass neck at face glass rear portion is formed, be arranged on the electron gun at aforementioned vacuum tube rear portion, be arranged on the saddle type horizontal deflection winding on the periphery of aforementioned vacuum tube rear portion, be arranged on the saddle type vertical deflection winding in the aforementioned saddle type horizontal deflection winding outside, be arranged on the magnetic core in the aforementioned saddle type vertical deflection winding outside, utilize the big feature of aforementioned magnetic core about the magneto resistive ratio of the central portion up and down of phosphor screen one side and electron gun one side, can produce following effect.Promptly by using the deflecting coil of aforementioned alternative plan of the present invention, only can compensate the pincushion distortion of face upper and lower side and the misconvergence on the face simultaneously as mentioned above with deflecting coil self, owing to can also seek the reduction of the leakage field of phosphor screen one side and electron gun one side, therefore further improved the image quality of chromoscope simultaneously.
Third party's case according to deflecting coil of the present invention, auto-convergence mode deflecting coil comprises at least, saddle type horizontal deflection winding, be arranged on the saddle type vertical deflection winding and the magnetic core that is arranged on the aforementioned saddle type vertical deflection winding outside in the aforementioned saddle type horizontal deflection winding outside, utilize the former magnetic core of stating in the 35 degree above scope of trunnion axis as benchmark of phosphor screen one side, the feature at position big about a pair of magneto resistive ratio is set at least, the magnet-wire of horizontal deflection magnetic field is difficult to by position big about magneto resistive ratio.Therefore, the pincushion field in phosphor screen one side that magnetic core and horizontal deflection winding produce is curved shape to avoid position big about magneto resistive ratio, and the pincushion distortion of horizontal deflection magnetic field strengthens.Thereby, compare the Distribution of Magnetic Field of phosphor screen one side that energy controlling level deflection winding produces from the situation of using traditional magnetic core and horizontal deflection winding.Therefore, do not change the phosphor screen one side flanges portion shape of horizontal deflection winding, just can fully alleviate the high order raster distortion (gull is wing) of face upper and lower side.Its result, the winding wire rod of phosphor screen one side flanges portion is injury-free when the coiling of horizontal deflection winding.In addition, though not using compensation magnet also fully to alleviate gull wing, institute is so that number of elements reduces, manufacturing cost reduces, and also needn't consider the magnetization discreteness of compensating magnet simultaneously in manufacturing process.
In third party's case of aforementioned deflecting coil of the present invention, spending improvement that pair of notches portion above scope at least be set at the trunnion axis of phosphor screen one side as 35 of benchmark with magnetic core as adopting, then since in this notch magnetic resistance become big, so the Distribution of Magnetic Field of phosphor screen one side that produces of controlling level deflection winding simply.
In third party's case of aforementioned deflecting coil of the present invention, spending improvement that the position of a pair of wall thickness reduction above scope at least be set at the trunnion axis of phosphor screen one side as 35 of benchmark with magnetic core if adopt, then become big, so the Distribution of Magnetic Field of phosphor screen one side that produces of controlling level deflection winding simply in the position of wall thickness reduction magnetic resistance.
In third party's case of aforementioned deflecting coil of the present invention, if adopt with magnetic core the trunnion axis of phosphor screen one side as the scope more than 35 degree of benchmark in, the a pair of improvement that constitutes the position with material little about the permeability ratio is set at least, then since in the position that the material little with permeability constitutes magnetic resistance become big, so the phosphor screen one side Distribution of Magnetic Field that produces of controlling level deflection winding simply.
Third party's case according to aforementioned chromoscope of the present invention, the chromoscope that auto-convergence formula deflecting coil is housed comprises at least, by face glass and connect the vacuum tube that the glass neck at face glass rear portion forms, be arranged on the electron gun at aforementioned vacuum tube rear portion, be arranged on the saddle type horizontal deflection winding on the periphery of aforementioned vacuum tube rear portion, be arranged on the saddle type vertical deflection winding in the aforementioned saddle type horizontal deflection winding outside, be arranged on the magnetic core in the aforementioned saddle type vertical deflection winding outside, utilize the former magnetic core of stating in the 35 degree above scope of trunnion axis as benchmark of phosphor screen one side, the feature at position big about a pair of magneto resistive ratio is set at least, can produces following effect.Promptly, can fully alleviate the high order raster distortion (gull is wing) of face upper and lower side as mentioned above, the image quality of chromoscope is improved owing to use the deflecting coil of aforementioned third party's case of the present invention.
According to the cubic case of aforementioned deflecting coil of the present invention, auto-convergence mode deflecting coil comprises at least, saddle type horizontal deflection winding, be arranged on the saddle type vertical deflection winding and the magnetic core that is arranged on the aforementioned saddle type vertical deflection winding outside in the aforementioned saddle type horizontal deflection winding outside, utilize former magnetic core is provided with position little about a pair of magneto resistive ratio at least in the above scope of 35 degree of trunnion axis as benchmark of phosphor screen one side the feature of stating, the magnetic line of force of horizontal deflection magnetic field is easy to by the little position of magnetic resistance.Therefore, the shape with the position that diminishes towards magnetic resistance in the pincushion field of phosphor screen one side that magnetic core and horizontal deflection winding produce becomes bent, so the pincushion distortion of horizontal deflection magnetic field reduces.Thereby compare the Distribution of Magnetic Field of phosphor screen one side of possible controlling level deflection winding with using conventional cores and horizontal deflection winding situation.Whereby, even do not change the phosphor screen one side flanges portion shape of horizontal deflection winding, also can fully alleviate the high order raster distortion (gull is wing) of face upper and lower side.Its result, the winding wire rod of fluorescence screen side lip portions is injury-free when the horizontal deflection winding winds the line.In addition,,, reduced manufacturing cost, in manufacturing process, need not consider the magnetized discreteness of compensating magnet simultaneously so reduced number of elements even it is wing also fully to alleviate gull without compensating magnet.
In the cubic case of deflecting coil of the present invention, is being that 35 of benchmark spend above scope in magnetic core at phosphor screen one side trunnion axis if adopt, the improvement at the position that a pair of wall thickness thickens is set at least, then since in the position of wall thickness magnetic resistance reduce, so the Distribution of Magnetic Field of phosphor screen one side that produces of controlling level deflection winding simply.
In the cubic case of aforementioned deflecting coil of the present invention, if adopt in the scope of magnetic core more than the trunnion axis of phosphor screen one side is 35 degree of benchmark, at least be provided with a pair of with permeability than about the improvement at the position that constitutes of big material, then since in the position that the material big with permeability constitutes magnetic resistance diminish, so the Distribution of Magnetic Field of phosphor screen one side that produces of controlling level deflection winding simply.
Also have, cubic case according to aforementioned chromoscope of the present invention, the chromoscope that auto-convergence formula deflecting coil is housed comprises at least, by face glass and connect the vacuum tube that the glass neck at face glass rear portion is formed, be arranged on the electron gun at aforementioned vacuum tube rear portion, be arranged on the saddle type horizontal deflection winding on the periphery of aforementioned vacuum tube rear portion, be arranged on the saddle type vertical deflection winding in the aforementioned saddle type horizontal deflection winding outside, be arranged on the magnetic core in the aforementioned saddle type vertical deflection winding outside, utilize the former magnetic core of stating in the 35 degree above scope of trunnion axis as benchmark of phosphor screen one side, the configuration at position little about a pair of magneto resistive ratio is set at least, can produces following effect.Promptly, can fully alleviate face upper and lower side high order raster distortion (gull is wing) as mentioned above owing to use the deflecting coil of the cubic case of aforementioned the present invention, so that the image quality of chromoscope be improved.
Fig. 1 is the side cutaway view of deflecting coil the 1st embodiment of the present invention (saddle-saddle type deflecting coil);
Fig. 2 is the magnetic core plane graph of the present invention the 1st embodiment;
Fig. 3 is near profile phosphor screen one side of the pincushion field shape of showing that traditional magnetic core and horizontal deflection winding are produced;
Fig. 4 is near the profile of phosphor screen one side of showing the magnetic core of the present invention the 1st embodiment and the pincushion field shape that the horizontal deflection winding is produced;
Fig. 5 represents the plane graph of another example of the 1st embodiment magnetic core of deflecting coil of the present invention;
Fig. 6 is near the 2nd embodiment magnetic core profile phosphor screen one side of deflecting coil of the present invention;
Fig. 7 is near the 3rd embodiment magnetic core profile phosphor screen one side of deflecting coil of the present invention;
Fig. 8 is the magnetic core plane graph of the 4th embodiment of deflecting coil of the present invention;
Fig. 9 is to use the leakage field key diagram of the deflecting coil of traditional deflecting coil and the present invention's the 4th embodiment magnetic core;
Figure 10 is the plane graph of another example of the 4th embodiment magnetic core of deflecting coil of the present invention;
Figure 11 is the plane graph of chromoscope the 5th embodiment of the present invention;
Figure 12 is the plane graph of the 6th embodiment (saddle-saddle type deflecting coil) of deflecting coil of the present invention;
Figure 13 is the magnetic core plane graph of the present invention the 6th embodiment;
Figure 14 represents near the profile of phosphor screen one side of the pincushion field shape that traditional magnetic core and horizontal deflection winding produce;
Figure 15 represents near the profile of phosphor screen one side of the pincushion field shape that the 6th embodiment magnetic core of the present invention and horizontal deflection winding produce;
Figure 16 is the plane graph of another example of the magnetic core of deflecting coil the 6th embodiment of the present invention;
Figure 17 is near the profile phosphor screen one side of magnetic core of the 7th embodiment of deflecting coil of the present invention;
Figure 18 is near the profile phosphor screen one side of magnetic core of the 8th embodiment of deflecting coil of the present invention;
Figure 19 is near the profile phosphor screen one side of magnetic core of the 9th embodiment of deflecting coil of the present invention;
Figure 20 is near the profile of phosphor screen one side of the pincushion field shape of expression the present invention's the 9th embodiment magnetic core and the generation of horizontal deflection winding;
Figure 21 is near the profile of phosphor screen one side of deflecting coil the 10th embodiment magnetic core of the present invention;
Figure 22 is traditional saddle-saddle type deflecting coil side cutaway view;
Figure 23 is traditional saddle-saddle type deflecting coil plane graph;
Figure 24 is the figure of the positive anisotropic astigmatism of explanation.
Further specifically describe the present invention below by embodiment.
Fig. 1 is the side cutaway view of deflection line graph the 1st embodiment of the present invention (saddle-saddle type deflecting coil); Fig. 2 is the magnetic core plane graph of the present invention the 1st embodiment.As shown in Figure 1, deflecting coil by the horizontal deflection winding 1 that is wound into the saddle type, be arranged on the saddle type vertical deflection group 2 on horizontal deflection winding 1 outside, the high permeability magnetic core 3 that is arranged on vertical deflection winding 2 outsides is formed.
As shown in Figure 1, 2, at the central part up and down of phosphor screen one side notch 7 is set magnetic swallow 3.Making this notch form radius is the semi-circular shape of 28mm.
Here, showed traditional magnetic core 3 ' and the shape of the pincushion field that produces of horizontal deflection winding 1 among Fig. 3; Fig. 4 has showed that the central portion up and down of phosphor screen one side is provided with the magnetic core 3 of otch 7 and the shape of the pincushion field that horizontal deflection winding 1 produces.Fig. 3,4 is the view of seeing from phosphor screen one side.By central portion up and down notch 7 is set at phosphor screen one side owing to become big at this notch 7 magnetic resistance, so the magnetic line of force of horizontal deflection magnetic field 8 be difficult to by.Therefore, resemble shown in Figure 4ly, the pincushion field in phosphor screen one side (horizontal deflection magnetic field 8) that magnetic core 3 and horizontal deflection winding 1 produces is the curved shape of avoiding notch 7, and traditional magnetic core 3 ' and the situation (Fig. 3) of horizontal deflection winding is much better than than using.Promptly be the pincushion field grow of horizontal deflection winding 1 in phosphor screen one side.Thereby the pincushion distortion that compensating magnet just can compensate the face upper and lower side need not be set.Its result has reduced number of components in addition, and manufacturing cost is descended, and also needn't consider the magnetized discreteness of compensating magnet simultaneously in manufacturing process.Particularly forming under the situation of notch 7 with the semi-circular shape of radius 28mm as mentioned above, the pincushion distortion of color TV set picture upper and lower side alleviates from 4% and is about 0%.And, make it possible to compensate the misconvergence on the face, so only can compensate misconvergence on face upper and lower side pincushion distortion and the face simultaneously with deflecting coil self because the barrel field that vertical deflection winding 2 produces strengthens.
And in the present embodiment,, also needing not be confined to this numerical value although notch 7 formation radiuses are the semi-circular shape of 28mm in the present embodiment, its radius value can be chosen wantonly.And the shape of notch also is not limited to semicircle, and Any shape all can obtain effect same.Particularly as shown in Figure 5, when notch is shaped as rectangle, when the magnetic core total length be L1, magnetic core be L2 in the horizontal full-size of peristome of phosphor screen one side, when rectangle two length of sides are a, b, then ideal situation is:
0＜a/L
1≤0.5
0＜b/L
2≤0.7
And in the present embodiment,, notch 7 may not be set though be to be provided with notch 7 as the measure that strengthens magnetic resistance.Under the magnetic line of force situation in considering phosphor screen one side magnetic core, as long as make magnetic core about the magneto resistive ratio of the middle body up and down of phosphor screen one side greatly, influence the distribution of vertical deflection magnetic field hardly, just strengthened horizontal deflection magnetic field.In the following the 2nd and the 3rd embodiment, other examples have been showed.
Fig. 6 is near the profile of magnetic core phosphor screen one side of deflecting coil the 2nd embodiment of the present invention.As shown in Figure 6, make magnetic core 3 will approach about the wall ratio of the central portion up and down 9 of phosphor screen one side.Other parts constitute the same with the foregoing description 1, and be omitted (with reference to Fig. 1) is described.If thin, then big about the wall ratio of the central portion up and down 9 of phosphor screen one side so just at the position of this wall thickness magnetic resistance, thus the magnetic line of force of horizontal deflection magnetic field be difficult to by.As a result, can obtain with above-mentioned the 1st embodiment in the same effect of situation of notch 7 is set.
Fig. 7 is near the profile of magnetic core phosphor screen one side among deflecting coil the 3rd embodiment of the present invention.Resemble shown in Figure 7, magnetic core 3 the 10 usefulness permeabilities of central portion up and down of phosphor screen one side than about little material make.All the other formations are identical with above-mentioned the 1st embodiment, and be omitted (with reference to Fig. 1) is described.As with FERRITE CORE (Mg-Zn) as magnetic core 3, make the little material of permeability only constitute the central portion up and down 10 of phosphor screen one side if use by changing mixed proportion, then can realize the formation of present embodiment.(TDK makes, magnetic permeability mu promptly to use H4L as the integral body of magnetic core 3
1=500), have only the central portion up and down 10 of phosphor screen one side to use H4M (TDK manufacturing, magnetic permeability mu
2=320) or H4H (TDK makes, magnetic permeability mu
3=400).Like this, only the central portion up and down 10 of phosphor screen one side use permeabilities than about little material, then because big at the little position magnetic resistance of this permeability, thus the magnetic line of force of horizontal deflection magnetic field be difficult to by.As a result, can obtain with above-mentioned the 1st embodiment in same effect when notch 7 is set.
Embodiment 4
Fig. 8 is the magnetic core plane graph of the 4th embodiment of deflecting coil of the present invention.As shown in Figure 8, magnetic core 3 central portion about phosphor screen one side and electron gun one side all is provided with notch 7 and 15.Remainder constitutes the same with above-mentioned the 1st embodiment, and be omitted (with reference to Fig. 1) is described.
Fig. 9 represents traditional deflecting coil and uses the magnetic field intensity of deflecting coil on central shaft of the magnetic core 3 of present embodiment.In Fig. 9, curve 16 is for using the deflecting coil situation of present embodiment magnetic core 3; Curve 17 is the situation of traditional deflecting coil.Both compare, though near the peak value of curve, roughly become same curve, but in phosphor screen one side and electron gun one side, it is low that the deflecting coil that uses present embodiment magnetic core 3 and traditional deflecting coil are compared its value, this leakage field that shows phosphor screen one side and electron gun one side reduces, its reason is by at the central portion up and down of phosphor screen one side and electron gun one side notch 7 and 15 being set respectively at magnetic core 3, magnetic resistance becomes big in this notch 7,15, and the influence that produces the coil in magnetic field from horizontal deflection winding 1 is weakened.Along speech, when the central portion up and down at phosphor screen one side and electron gun one side was provided with radius respectively and is the semi-circular cut-out portion 7,15 of 28mm, 10mm, leakage field was than traditional structure low 35%.
Constitute deflecting coil if resemble present embodiment, as described in above-mentioned the 1st embodiment, only just can compensate the pincushion distortion of face upper and lower side and both defectives such as misconvergence on the face simultaneously with deflecting coil self, simultaneously, realize the reduction of the leakage field of phosphor screen one side and electron gun one side.
And in the present embodiment, although notch 7 forms the semicircle of radius 28mm, notch 15 forms the semicircle of radius 10mm, need not be confined to this numerical value, can be the radius of any number.In addition, the shape of notch also is not limited to semicircle, even arbitrary shape also can obtain effect same.Particularly as shown in figure 10, when notch be shaped as rectangle the time, desirable size relationship is, when the magnetic core total length is L
1, magnetic core the horizontal full-size of electron gun side peristome be L
2, when rectangle two edge lengths are a, b,
0＜a/L
1≤0.2
0＜b/L
2≤ 0.35 rectangular situation that is shaped as about notch 7 is described in above-mentioned the 1st embodiment, repeats no more.
In the present embodiment, measure as the leakage field of seeking to reduce phosphor screen one side and electron gun one side, although be provided with notch 7,15, but it not is unique that notch 7,15 is set, as long as make magnetic core 3 about the magneto resistive ratio of the central portion up and down of phosphor screen one side and electron gun one side greatly.Thereby, resemble above-mentioned second embodiment, both can make magnetic core 3 the wall thickness of central portion up and down of phosphor screen one side and electron gun one side do than about thin, also can only constitute the up and down central portion of magnetic core 3 with little material about the permeability ratio as above-mentioned the 3rd embodiment at phosphor screen one side and electron gun one side.
Embodiment 5
Figure 11 is the plane graph of chromoscope the 5th embodiment of the present invention.In Figure 11, vacuum tube 11 is made up of the glass neck 13 at face glass 12, connection face glass 12 rear portions, and electron gun 14 is located at glass neck 13 rear portions.And the deflecting coil of auto-convergence mode is contained on the glass neck 13 rear portion peripheries, and above-mentioned deflecting coil is made up of the horizontal deflection winding 1 of coiled saddle type, the high permeability magnetic core 3 that is located at the saddle type vertical deflection winding 2 in horizontal deflection winding 1 outside and is located at saddle type vertical deflection winding 2 outsides.And magnetic core 3 is provided with notch 7 (with reference to Fig. 1,2) at the central portion up and down of phosphor screen one side.It is the semicircle of 28mm that this notch 7 has formed radius, promptly in the chromoscope of present embodiment, as the deflecting coil of deflecting coil use at the structure shown in above-mentioned the 1st embodiment.Like this by using the deflecting coil of the structure in above-mentioned the 1st embodiment, showed, owing to can compensate the misconvergence on face upper and lower side pincushion distortion and the face as mentioned above simultaneously, so improved the image quality of chromoscope.
Also have, in the present embodiment, use the deflecting coil situation of constructing shown in above-mentioned the 1st embodiment to describe, be not limited in this structure though exemplify.In the magnetic core of considering fluorescence screen side, under the magnetic line of force situation, can use magnetic core big deflecting coil about the magneto resistive ratio of the central portion up and down of phosphor screen one side, so that influence a vertical deflection magnetic field ground enhanced level magnetic deflection field hardly.Promptly as deflecting coil, such as using at the deflecting coil of constructing shown in above-mentioned the 2nd, the 3rd embodiment.And if use the deflecting coil of the structure shown in above-mentioned the 4th embodiment, can realize reducing the leakage field of phosphor screen one side and electron gun one side, reduce the unnecessary high radiation that human body is had adverse effect, form a kind of good environment useful the people.
Embodiment 6
Figure 12 is the plane graph of the 6th embodiment (saddle-saddle type deflecting coil) of deflecting coil of the present invention; Figure 13 is the magnetic core plane graph of the present invention the 6th embodiment.As shown in figure 12, deflecting coil is made of coiled saddle type horizontal deflection winding 1, the high permeability magnetic core 3 that is located at the saddle type vertical deflection winding 2 in horizontal deflection winding 1 outside and is located at vertical deflection winding 2 outsides.
Shown in Figure 12,13, it is that 35 of benchmark is spent in the above scope (with reference to Figure 15) at the trunnion axis of phosphor screen one side that pair of notches portion 18 is arranged on magnetic core 3.It is the semicircle of 10mm that this notch 18 forms radius.
At this, showed common magnetic core 3 ' and the shape of the pincushion field that produces of horizontal deflection winding 1 among Figure 14.It is that 35 degree of benchmark are provided with the magnetic core 3 of pair of notches portion 18 and the pincushion field shape that horizontal deflection winding 1 produces in the above scope that Figure 15 has showed at the trunnion axis with phosphor screen one side.Figure 14,15 is the view of seeing from fluorescence screen side.By being that 35 degree of benchmark are provided with pair of notches portion 18 in the above scope at trunnion axis, because magnetic resistance becomes big in this notch 18, so be difficult to the magnetic line of force by horizontal deflection magnetic field 19 with phosphor screen one side.Therefore, the phosphor screen one side pincushion field that magnetic core 3 and horizontal deflection winding 1 produce as shown in Figure 15, is the curved shape of avoiding notch 18, and the pincushion distortion of horizontal deflection magnetic field 19 strengthens.Thereby, compared with using common magnetic core 3 ' and the situation (Figure 14) of horizontal deflection winding 1, the phosphor screen one side Distribution of Magnetic Field that might controlling level deflection winding 1 produces.Whereby, do not change the phosphor screen one side flanges portion shape of horizontal deflection winding 1, can fully alleviate face upper and lower side high order raster distortion (gull is wing).As a result, the winding wire rod of phosphor screen one side flanges portion does not sustain damage when 1 coiling of horizontal deflection winding.And gull is wing owing to also fully alleviating without compensating magnet, thus reduced number of packages amount, reduction manufacturing cost in addition, and in manufacturing process, need not consider the magnetized discreteness of compensating magnet.Especially as mentioned above, when to make notch 18 form radiuses be 10mm semicircle, wing being relieved to from 1% of the gull on the color TV set picture was roughly 0%.
And in the present embodiment,, also be not limited to a pair of though be that 35 degree of benchmark are provided with pair of notches portion 18 in the above scope at trunnion axis with phosphor screen one side.If a pair of above notch 18 is set, the further fluorescence screen side Distribution of Magnetic Field of the winding of controlling level deflection fine 1 generation.
Also existing in the present embodiment, is the semicircle of 10mm though make notch 18 form radius, also not necessarily limits to this numerical value, can be the radius of any number.And the notch shape also need not be confined to semicircle, and arbitrary shape can both obtain effect same.Especially as shown in figure 16, when notch was shaped as rectangle, the ideal relationship of its size was, when the magnetic core total length is L
1, magnetic core is 2L in the horizontal full-size of peristome of phosphor screen one side
2When the rectangle length of side is respectively a, b, then:
0＜a/L
1≤0.5
0＜b/L
2≤0.5
In the present embodiment, as making magnetic resistance become big measure is that notch 18 is set, but notch 18 may not be set necessarily, in considering phosphor screen one side magnetic core under the magnetic line of force situation, for the pincushion distortion that makes horizontal deflection magnetic field is being in the above scope of 35 degree of benchmark, as long as position big about a pair of magneto resistive ratio is set at least with magnetic core at the trunnion axis of phosphor screen one side greatly.In the following the 7th and 8 embodiment, other examples have been showed.
Figure 17 is near the profile of magnetic core phosphor screen one side of deflecting coil the 7th embodiment of the present invention.At Figure 17, magnetic core 3 is provided with the thin position 20 of a pair of wall thickness at least in the above scope of 35 degree of trunnion axis as benchmark with phosphor screen one side.The remainder structure is the same with above-mentioned the 6th embodiment, and be omitted (with reference to Figure 12) is described.In the trunnion axis with phosphor screen one side is the above scope of 35 degree of benchmark, by the position 20 that is provided with at least one pair of wall thickness attenuation owing to strengthen at the position of this wall thickness attenuation 20 magnetic resistance, thus the magnetic line of force of horizontal deflection magnetic field 19 be difficult to by.Its result can obtain with above-mentioned the 6th embodiment in effect same when notch 18 is set.
Figure 18 is near magnetic core profile phosphor screen one side of the 8th embodiment of deflecting coil of the present invention.As shown in figure 18, magnetic core 3 is provided with a pair of position 21 that constitutes with material little about the permeability ratio in the above scope of 35 degree of trunnion axis as benchmark with phosphor screen one side.All the other formations are the same with above-mentioned the 6th embodiment, and be omitted (with reference to Figure 12) is described.With the trunnion axis of phosphor screen one side as the above scope of 35 degree of benchmark in by be provided with permeability than about the position 21 that constitutes of little material owing to become big at these position 21 magnetic resistance, thus the magnetic line of force of horizontal deflection magnetic field 19 be difficult to by.The result obtains and the same effect of situation that notch 18 is set in above-mentioned the 6th embodiment.
Embodiment 9
Figure 19 is near the profile of magnetic core phosphor screen one side of the 9th embodiment of deflecting coil of the present invention.As shown in figure 19, in trunnion axis the 35 degree above scope as benchmark of magnetic core 3, the position 22 that a pair of wall thickness is thickeied is set at phosphor screen one side.Making this wall thickness position 22 form radius is the semicircle of 10mm.The structure of remainder is the same with above-mentioned the 6th embodiment, and be omitted (with reference to Figure 12) is described.
At this, the shape that Figure 20 represents that magnetic core 3 and horizontal deflection winding 1 produce in the pincushion field of phosphor screen one side, and the position 22 of a pair of wall thickness thickening is set in the above scope of 35 degree of trunnion axis as benchmark with phosphor screen one side on the magnetic core 3.Figure 20 is the view of looking from phosphor screen one side.In with the trunnion axis of phosphor screen one side the above scope of 35 degree as benchmark, by the position 22 of a pair of wall thickness thickening is set because magnetic resistance diminishes in this wall thickness position 22, thus the magnetic line of force of horizontal deflection magnetic field 19 be easy to by.Therefore, the pincushion field of phosphor screen one side that produces by magnetic core 3 and horizontal deflection winding 1 as shown in figure 20, with the shape bending towards wall thickness position 22, the pincushion distortion of horizontal deflection magnetic field 19 reduces.Thereby with use conventional cores 3 ' reaching horizontal deflection winding 1 situation (Figure 14) compares, energy controlling level deflection winding is in the Distribution of Magnetic Field of phosphor screen one side.Like this, even horizontal deflection winding 1 at the shape invariance of phosphor screen one side flanges portion, also can fully alleviate face upper and lower side high order raster distortion (gull is wing).As a result, the winding wire rod of phosphor screen one side flanges portion is injury-free when 1 coiling of horizontal deflection winding.In addition, although using compensation magnet not, because the gull wing is fully alleviated, institute's number of spare parts that makes reduces a cost and reduces, and need not consider the magnetized discreteness of compensating magnet in manufacturing process simultaneously.Particularly when to make wall thickness position 22 form radiuses as mentioned above be 10mm semicircle, wing being relieved to from 1% of the gull on the television receiver picture was roughly 0%.
And in the present embodiment, be the semicircle of 10mm though make wall thickness position 22 form radius, need not be confined to this numerical value, can be any radius distance value.And the shape at wall thickness position also need not be confined to semicircle, such as the arbitrary shape that resembles rectangle etc. the effect of also taking a sample.
And in the present embodiment, though be provided with wall thickness position 22 as the measure that reduces magnetic resistance, but wall thickness position 22 need not be set, in the magnetic core of considering phosphor screen one side under the situation of the magnetic line of force, for the horizontal deflection magnetic field pincushion distortion is reduced, only in being the above scope of 35 degree of benchmark, the trunnion axis of phosphor screen one side position little about a pair of magneto resistive ratio is being set at least just with magnetic core.In following the 10th embodiment, other examples have been showed.
Embodiment 10
Figure 21 is near the profile of magnetic core phosphor screen one side of the 10th embodiment of deflecting coil of the present invention.As shown in figure 21, magnetic core 3 the trunnion axis with phosphor screen one side be 35 degree of benchmark be provided with in the above scope a pair of with permeability than about the position 23 that constitutes of big material.Other formations are the same with above-mentioned the 6th embodiment, and be omitted (with reference to Figure 12) is described.In the trunnion axis with phosphor screen one side is the above scope of 35 degree of benchmark, by be provided with a pair of with permeability than about the position 23 that constitutes of big material because magnetic resistance diminishes in this position 23, thus the magnetic line of force of horizontal deflection magnetic field 19 be easy to by.The same when as a result, among its obtained effect and above-mentioned the 9th embodiment wall thickness 22 being set.
Embodiment 11
Shuo Ming chromoscope in the present embodiment, the Figure 11 that uses among its plane graph and above-mentioned the 5th embodiment is same, so with Figure 11 present embodiment is described.Promptly as shown in figure 11, vacuum tube 11 is made up of the glass neck 13 at face glass 12, connection face glass 12 rear portions, and electron gun 14 is located at glass neck 13 rear portions.And the deflecting coil of auto-convergence mode is contained on the glass neck 13 rear portion peripheries, and above-mentioned deflecting coil is made up of the horizontal deflection winding 1 of coiled saddle type, the high permeability magnetic core 3 that is located at the saddle type vertical deflection winding 2 in horizontal deflection winding 1 outside and is located at saddle type vertical deflection winding 2 outsides.And magnetic core 3 is provided with pair of notches portion 18 (with reference to Figure 12,13,15) in the above scope of 35 degree of trunnion axis as benchmark with phosphor screen one side.It is the 10mm semicircle that this notch forms radius.Promptly in the chromoscope of present embodiment, use the deflecting coil of showing at above-mentioned the 6th embodiment as deflecting coil.The deflecting coil of the structure of being showed at above-mentioned the 6th embodiment like this by use, because the high order raster distortion (gull is wing) of above-mentioned face upper and lower side is fully alleviated, so improved the image quality of chromoscope.
And in the present embodiment,, need not be confined to this structure though for example understand the situation of the deflecting coil that uses the structure of showing at above-mentioned the 6th embodiment.Also can use such deflecting coil, in considering the fluorescence screen side magnetic core under the situation of the magnetic line of force, for the pincushion distortion that makes horizontal deflection magnetic field becomes big, in with trunnion axis the 35 degree above scope as benchmark of magnetic core at phosphor screen one side, position big about a pair of magneto resistive ratio is set at least, perhaps, in the scope of magnetic core more than the trunnion axis of phosphor screen one side is spent as 35 of benchmark, position little about at least one pair of magneto resistive ratio is set for the pincushion distortion of horizontal deflection magnetic field is diminished.Promptly as deflecting coil, such as the deflecting coil that also can use the structure shown in the above-mentioned the 7th～10 the embodiment.
Claims (30)
1. auto-convergence formula deflecting coil, at least comprise, saddle type horizontal deflection winding, be arranged on the saddle type vertical deflection winding in the described saddle type horizontal deflection winding outside and be arranged on the magnetic core in the described saddle type vertical deflection winding outside, it is characterized in that described magnetic core big about the magneto resistive ratio of the central portion up and down of phosphor screen one side.
2. deflecting coil as claimed in claim 1 is characterized in that, at the central portion up and down of phosphor screen one side notch is set at magnetic core.
3. deflecting coil as claimed in claim 1 is characterized in that, magnetic core approaching about the wall ratio of the central portion up and down of phosphor screen one side.
4. deflecting coil as claimed in claim 1 is characterized in that, magnetic core little material about the central portion up and down of phosphor screen one side compares with permeability constitutes.
5. deflection line graph as claimed in claim 1 is characterized in that, described magnetic core big about the magneto resistive ratio of the central portion up and down of electron gun one side.
6. deflecting coil as claimed in claim 5 is characterized in that, at the central portion up and down of phosphor screen one side and electron gun one side notch is set at magnetic core.
7. deflecting coil as claimed in claim 5 is characterized in that, magnetic core approaching about the wall ratio of central portion up and down of phosphor screen one side and electron gun one side.
8. deflecting coil as claimed in claim 5 is characterized in that, magnetic core little material about the central portion up and down of phosphor screen one side and electron gun one side compares with permeability constitutes.
9. chromoscope that auto-convergence formula deflecting coil is housed, at least comprise, by face glass and connect the vacuum tube that the glass neck at described face glass rear portion is formed, be arranged on the electron gun at described vacuum tube rear portion, be arranged on the saddle type horizontal deflection winding of described vacuum tube rear portion periphery, be arranged on the saddle type vertical deflection winding in the described saddle type horizontal deflection winding outside, be arranged on the magnetic core in the described saddle type vertical deflection winding outside, it is characterized in that described magnetic core big about the magneto resistive ratio of the central portion up and down of phosphor screen one side.
10. chromoscope as claimed in claim 9 is characterized in that, at the central portion up and down of phosphor screen one side notch is set at magnetic core.
11. chromoscope as claimed in claim 9 is characterized in that, magnetic core approaching about the wall ratio of the central portion up and down of phosphor screen one side.
12. chromoscope as claimed in claim 9 is characterized in that, magnetic core little material about the central portion up and down of phosphor screen one side compares with permeability constitutes.
13. chromoscope as claimed in claim 9 is characterized in that, described magnetic core big about the magneto resistive ratio of the central portion up and down of electron gun one side.
14. chromoscope as claimed in claim 13 is characterized in that, at the central portion up and down of phosphor screen one side and electron gun one side notch is set at magnetic core.
15. chromoscope as claimed in claim 13 is characterized in that, magnetic core approaching about the wall ratio of the central portion up and down of phosphor screen one side and electron gun one side.
16. chromoscope as claimed in claim 13 is characterized in that, magnetic core little material about the central portion up and down of phosphor screen one side and electron gun one side compares with permeability constitutes.
17. auto-convergence formula deflecting coil, at least comprise, saddle type horizontal deflection winding, be arranged on the saddle type vertical deflection winding in the described saddle type horizontal deflection winding outside, with the magnetic core that is arranged on the described saddle type vertical deflection winding outside, it is characterized in that, in trunnion axis the 35 degree above scope as benchmark of described magnetic core, position big about a pair of magneto resistive ratio is set at least at phosphor screen one side.
18. deflecting coil as claimed in claim 17 is characterized in that, in trunnion axis the 35 degree above scope as benchmark of magnetic core at phosphor screen one side, pair of notches portion is set at least.
19. deflecting coil as claimed in claim 17 is characterized in that, in trunnion axis the 35 degree above scope as benchmark of magnetic core at phosphor screen one side, the position of a pair of wall thickness reduction is set at least.
20. deflecting coil as claimed in claim 17 is characterized in that, in trunnion axis the 35 degree above scope as benchmark of magnetic core at phosphor screen one side, a pair of position that constitutes with material little about the permeability ratio is set at least.
21. chromoscope that auto-convergence formula deflecting coil is housed, at least comprise, by face glass and connect the vacuum tube that the glass neck at described face glass rear portion is formed, be arranged on the electron gun at described vacuum tube rear portion, be arranged on the saddle type horizontal deflection winding of described vacuum tube rear portion periphery, be arranged on the saddle type vertical deflection winding in the described saddle type horizontal deflection winding outside, be arranged on the magnetic core in the described saddle type vertical deflection winding outside, it is characterized in that, in with trunnion axis the 35 degree above scope as benchmark of described magnetic core, position big about a pair of magneto resistive ratio is set at least at phosphor screen one side.
22. chromoscope as claimed in claim 21 is characterized in that, in trunnion axis the 35 degree above scope as benchmark of magnetic core at phosphor screen one side, pair of notches portion is set at least.
23. chromoscope as claimed in claim 21 is characterized in that, in trunnion axis the 35 degree above scope as benchmark of magnetic core at phosphor screen one side, the position that a pair of wall thickness reduces is set at least.
24. chromoscope as claimed in claim 21 is characterized in that, in trunnion axis the 35 degree above scope as benchmark of magnetic core at phosphor screen one side, a pair of position that constitutes with material little about the permeability ratio is set at least.
25. auto-convergence formula deflecting coil, at least comprise, saddle type horizontal deflection winding, be arranged on the saddle type vertical deflection institute winding in the described saddle type horizontal deflection winding outside, with the magnetic core that is arranged on the described saddle type vertical deflection winding outside, it is characterized in that, in trunnion axis the 35 degree above scope as benchmark of described magnetic core, position little about a pair of magneto resistive ratio is set at least at phosphor screen one side.
26. deflecting coil as claimed in claim 25 is characterized in that, in trunnion axis the 35 degree above scope as benchmark of magnetic core at phosphor screen one side, the position that a pair of wall thickness thickens is set at least.
27. deflecting coil as claimed in claim 25 is characterized in that, in trunnion axis the 35 degree above scope as benchmark of magnetic core at phosphor screen one side, a pair of position that constitutes with material big about the permeability ratio is set at least.
28. chromoscope that auto-convergence formula deflecting coil is housed, at least comprise, by face glass and connect the vacuum tube that the glass neck at described face glass rear portion is formed, be arranged on the electron gun at described vacuum tube rear portion, be arranged on the saddle type horizontal deflection winding of described vacuum visitor rear portion periphery, be arranged on the saddle type vertical deflection winding in the described saddle type horizontal deflection winding outside, be arranged on the magnetic core in the described saddle type vertical deflection winding outside, it is characterized in that, in with trunnion axis the 35 degree above scope as benchmark of described magnetic core, position little about a pair of magneto resistive ratio is set at least at phosphor screen one side.
29. chromoscope as claimed in claim 28 is characterized in that, in trunnion axis the 35 degree above scope as benchmark of magnetic core at phosphor screen one side, the position that a pair of wall thickness thickens is set at least.
30. chromoscope as claimed in claim 28 is characterized in that, in trunnion axis the 35 degree above scope as benchmark of magnetic core at phosphor screen one side, a pair of position that constitutes with material big about the permeability ratio is set at least.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP211551/94 | 1994-09-05 | ||
| JP21155194A JPH0877944A (en) | 1994-09-05 | 1994-09-05 | Deflection yoke and color cathode-ray tube having this deflection yoke |
| JP211551/1994 | 1994-09-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1127420A CN1127420A (en) | 1996-07-24 |
| CN1118850C true CN1118850C (en) | 2003-08-20 |
Family
ID=16607691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95115899A Expired - Fee Related CN1118850C (en) | 1994-09-05 | 1995-09-05 | Biased rotating coil and color kinescope |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0877944A (en) |
| CN (1) | CN1118850C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2766612B1 (en) * | 1997-07-28 | 1999-10-15 | Thomson Tubes & Displays | DEVIATOR FOR TUBE WITH CATHODE RAYS WITH IMPROVED GEOMETRY AND CONVERGENCE |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US391304A (en) * | 1888-10-16 | Apparatus fob filing teeth | ||
| US4233582A (en) * | 1977-08-24 | 1980-11-11 | Hitachi, Ltd. | Deflection yoke for use with wide angle deflection system |
| JPS61168843A (en) * | 1985-01-22 | 1986-07-30 | Mitsubishi Electric Corp | Deflection yoke |
-
1994
- 1994-09-05 JP JP21155194A patent/JPH0877944A/en active Pending
-
1995
- 1995-09-05 CN CN95115899A patent/CN1118850C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US391304A (en) * | 1888-10-16 | Apparatus fob filing teeth | ||
| US4233582A (en) * | 1977-08-24 | 1980-11-11 | Hitachi, Ltd. | Deflection yoke for use with wide angle deflection system |
| JPS61168843A (en) * | 1985-01-22 | 1986-07-30 | Mitsubishi Electric Corp | Deflection yoke |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1127420A (en) | 1996-07-24 |
| JPH0877944A (en) | 1996-03-22 |
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