CN1118852C

CN1118852C - Cathode ray tube device

Info

Publication number: CN1118852C
Application number: CN96114472A
Authority: CN
Inventors: 本多正信; 大濑敏夫; 谷轮贤一郎; 岩崎胜世
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 1996-08-28
Filing date: 1996-11-15
Publication date: 2003-08-20
Anticipated expiration: 2016-11-15
Also published as: JP3361701B2; JPH1069863A; CN1175077A; TW340952B; KR19980017983A; KR100216395B1

Abstract

To provide a cathode-ray tube device with good convergence by correcting convergence coma as well as correcting green misconvergence at the corner of a screen. For the z-axial magnetic field distribution curve of a secondary distortion coefficient H2 showing the curvature of the deflection-directional magnetic flux density change of the cross section a coil at a right angle to its center axis in a horizontally deflecting magnetic field generated by a deflecting yoke, a negative minimum value H2a exists near an inlet plane EN specified at the flange portion on the electron gun side of the horizontally deflecting coil and a positive maximum value H2b exists between the inlet plane EN and an outlet plane EX specified at the flange portion on the screen side of the horizontally deflecting coil, a coefficient rh (=(&verbar H2b&verbar -&verbar H2a&verbar )/&verbar H2b&verbar ), regularized by the absolute value of the positive maximum value H2b, showing a deviation between the absolute value of the negative minimum value H2a and the absolute value of the positive maximum value H2b being -0.30 to 0.19.

Description

Cathode ray tube device

Technical field

The present invention relates to cathode ray tube device.In more detail, relate to the cathode ray tube device that improves the deflection system convergence characteristics.

Background technology

Along with popularizing of form, the high picture resolution meeting of face periphery that is used in the cathode ray tube device of display monitor becomes important.

As a key element of decision picture resolution, can enumerate the blueness that is illustrated on the face, green and emitting red light with the convergence errors of electron beam (hereinafter referred to as: misunderstand poly-) aggregation properties.With in the cathode ray tube device, the misunderstanding on this face is poly-at display monitor, in manufacture process, be adjusted to about about 0.3mm (hereinafter referred to as: the dynamic convergence adjustment).At this moment, particularly, though is to be relatively easy to electron beam and emitting red light with poly-adjustment of the misunderstanding between the electron beam at the blue-light-emitting in face bight, however green emitting with electron beam and blue-light-emitting with electron beam and emitting red light with the misunderstanding between the electron beam poly-(hereinafter referred to as: green misunderstanding gathers) adjustment is difficult.Reason is, when dynamically misunderstanding poly-the adjustment, inserts from the fluorescence screen side peristome of deflection system and to use, adhere to rectangle resin system flat board first end contain ferrite powder resin system soft magnetism sheet, it is very low that green is misunderstood the adjustment sensitivity that gathers.Thereby, in order to obtain good convergence characteristics, just need misunderstand in the green in face bight poly-be designed to very little.

The deflection system of using with regard to cathode ray tube device in recent years, for example, disclosed as special fair 6-52648 communique etc., it or not the enhancement mode shunt device that constitutes by the soft magnetic metal body that is arranged on the electron gun top, control action is in the green emitting electron beam, blue-light-emitting is used the magnetic deflection field intensity of electron beam with electron beam and emitting red light, proofread and correct the right central portion and the left side central portion of face, that the green of top central portion and following central portion is misunderstood is poly-(hereinafter referred to as: assemble commatic aberration), normally control the magnetic deflection field distortion and carry out correcting mode.At this moment, as there is the zone in the electron gun side from the cathode-ray tube body to the magnetic deflection field that fluorescence screen side launches, three zones that are divided into electron gun side zone, pars intermedia zone and fluorescence screen side zone, then in horizontal deflection magnetic field, in the electron gun side zone, produce strong barrel distortion, and in vertical deflection magnetic field, in the electron gun side zone, produce strong pincushion distortion.

Yet, as only being conceived to assemble the correction of commatic aberration, and the magnetic deflection field of setting the electron gun side zone distorts, then in the face bight, the green misunderstanding that can remainingly surpass 0.2mm is poly-, above-mentionedly to contain ferrite powder resin system soft magnetism sheet in order using, and to make that the region-wide misunderstanding of face is poly-to be become below the 0.3mm, just exist dynamic convergence to adjust the problem of difficulty.

Summary of the invention

For solving the above-mentioned problem of prior art, the purpose of this invention is to provide a kind of by suitable control expression magnetic deflection field coil central shaft (Z axle) and the Z axle of the secondary distortion factor H2 of the yawing moment change in magnetic flux density curvature of right angle section (X-Y section) or V2 on Distribution of Magnetic Field, the correct convergence commatic aberration, proofread and correct simultaneously and misunderstand poly-in the green in face bight, and carry out the dynamic convergence adjustment easily, and have the cathode ray tube device of good convergence characteristics.

For achieving the above object, constituting according to first of cathode ray tube device of the present invention is to be equipped with: face glass; Has cathode-ray tube body with the back-connected glass funnel of above-mentioned face glass; Be arranged at the electron gun of above-mentioned cathode ray tube rear body; At least the horizontal deflection coil that has the rear portion periphery that is disposed at above-mentioned cathode-ray tube body, the cathode ray tube device of deflection system that is arranged at the frame deflector coil in the above-mentioned horizontal deflection coil outside and is arranged at the magnetic core in the above-mentioned frame deflector coil outside, it is characterized in that, above-mentioned deflection system produces horizontal deflection magnetic field, magnetic field profile on the Z axle of the secondary distortion factor H2 of the curvature of the yawing moment change in magnetic flux density of the rectangular section of central shaft (Z axle) (X-Y section) of expression and coil, position at the above-mentioned electron gun side flange part of above-mentioned horizontal deflection coil, near the inlet face of regulation, has negative minimum value H2a, position at the fluorescence screen side flange part of above-mentioned inlet face and above-mentioned horizontal deflection coil, and the specified outlet face between, has positive maximum H2b, deviation between the absolute value of minimum value H2a that expression is negative and positive maximum H2b, with the normalized coefficient rh of the absolute value of positive maximum H2b (=(| H2b|-|H2a|)/| H2b|) be-more than 0.30, and below 0.19.Formation according to this cathode ray tube device, the intensity of the secondary distortion factor H2 in the intensity of secondary distortion factor H2 in electron gun side zone and pars intermedia zone can be suitably set, thereby the right central portion and the convergence commatic aberration of left side central portion and the convergence commatic aberration in face bight of face may be lowered simultaneously.Its result becomes easily the dynamic convergence adjustment, so can obtain to have the cathode ray tube device of good convergence characteristics.

In addition, second kind of formation according to cathode ray tube device of the present invention is to be equipped with: face glass; Has cathode-ray tube body with the back-connected glass funnel of above-mentioned face glass; Be arranged at the electron gun at the rear portion of above-mentioned cathode-ray tube body; At least the horizontal deflection coil that has the rear portion periphery that is disposed at above-mentioned cathode-ray tube body, be arranged at the frame deflector coil in the above-mentioned horizontal deflection coil outside, and the cathode ray tube device that is arranged at the deflection system of the magnetic core outside the above-mentioned frame deflector coil, it is characterized in that, represent that above-mentioned deflection system produces vertical deflection magnetic field, with magnetic field profile on the Z axle of secondary distortion factor V2 of the curvature of the yawing moment change in magnetic flux density of the rectangular section of central shaft (Z axle) (X-Y section) of expression coil, position at the above-mentioned electron gun side flange part of above-mentioned horizontal deflection coil, near the inlet face of regulation, has positive maximum V2a, position at the fluorescence screen side flange part of above-mentioned inlet face and above-mentioned horizontal deflection coil, and the specified outlet face between, has negative minimum value V2b, represent the deviation between the absolute value of the absolute value of positive maximum V2a and negative minimum value V2b, with the normalized coefficient rv of absolute value of negative minimum value V2b (=(| V2b|-|V2a|)/| V2b|) be-more than 0.62, and below-0.08.Formation according to this cathode ray tube device, can suitably set the intensity of the secondary distortion factor V2 in the intensity of secondary distortion factor V2 in electron gun side zone and pars intermedia zone, thereby may lower the top central portion of face and the convergence commatic aberration of following central portion and the green in face bight simultaneously and misunderstand poly-.Its result becomes easily the dynamic convergence adjustment, so can obtain to have the cathode ray tube device of good convergence characteristics.

Description of drawings

Fig. 1 is magnetic field profile figure on the z axle of secondary distortion factor H2 of horizontal deflection magnetic field of-90 ° of deflection systems that cathode ray tube device uses of 41cm (17 ") of expression the present invention the 1st embodiment.

Fig. 2 is magnetic field profile figure on the z axle of secondary distortion factor V2 of vertical deflection magnetic field of-90 ° of deflection systems that cathode ray tube device uses of 41cm (17 ") of expression the present invention the 2nd embodiment.

Fig. 3 is illustrated in the pattern figure that green that the bight of the cathode ray tube device face of the present invention the 1st embodiment takes place is misunderstood poly-(VGD).

Fig. 4 is illustrated in the pattern figure that green that the bight of the cathode ray tube device face of the present invention the 1st embodiment takes place is misunderstood poly-(VGD).

Fig. 5 is the pattern figure of the expression word order formula self-convergent system distinctive convergence commatic aberration of cathode ray tube device (VCR).

Fig. 6 is the location diagram that expression prepares to use with electron beam and emitting red light with electron beam (central beam) and blue-light-emitting by the green emitting of the vertical deflection magnetic field deflection that has pincushion distortion at electron gun side electron beam (lateral cord).

Fig. 7 misunderstands the figure of the genesis mechanism of poly-(VGD) for the green in the face bight of the cathode ray tube device of explanation the present invention the 1st embodiment.

Fig. 8 is illustrated in the right central portion of face of cathode ray tube device of the present invention the 1st embodiment and the figure of convergence commatic aberration (HCR) pattern that left side central portion takes place.

Fig. 9 is illustrated in the right central portion of face of cathode ray tube device of the present invention the 1st embodiment and the figure of convergence commatic aberration (HCR) pattern that left side central portion takes place.

Figure 10 is the normalization coefficient rh and the green graph of a relation of misunderstanding poly-(VGD) and assembling commatic aberration (HCR) of the cathode ray tube device of expression the present invention the 1st embodiment.

Figure 11 is illustrated in the figure that green that the face bight of the cathode ray tube device of the present invention the 2nd embodiment takes place is misunderstood poly-(HGB) pattern.

Figure 12 is illustrated in the figure that green that the face bight of the cathode ray tube device of the present invention the 2nd embodiment takes place is misunderstood poly-(HGB) pattern.

Figure 13 misunderstands the figure of the genesis mechanism of poly-(HGB) for the green in the face bight of the cathode ray tube device of explanation the present invention the 2nd embodiment.

Figure 14 is illustrated in the top central portion of face of cathode ray tube device of the present invention the 2nd embodiment and the figure of convergence commatic aberration (VCR) pattern that following central portion takes place.

Figure 15 is illustrated in the top central portion of face of cathode ray tube device of the present invention the 2nd embodiment and the figure of convergence commatic aberration (VCR) pattern that following central portion takes place.

Figure 16 is the normalization coefficient rh and the green graph of a relation of misunderstanding poly-(HGB) and assembling commatic aberration (VCR) of the cathode ray tube device of expression the present invention the 2nd embodiment.

Figure 17 is a routine plane graph of expression cathode ray tube device of the present invention.

Embodiment

(the 1st embodiment)

The present invention is the relevant cathode ray tube device that is equipped with following this formation.That is as shown in figure 17, cathode-ray tube body 36 is to constitute by face glass 37 and with the back-connected glass funnel 38 of face glass 37.Electron gun (not shown) is arranged on the rear portion of cathode ray tube 36.And, in the rear portion of cathode ray tube 36 periphery, be installed with by the horizontal deflection coil 39 of coiled saddle type, be arranged at the saddle type frame deflector coil 40 in horizontal deflection coil 39 outsides and be arranged at the deflection system that the FERRITE CORE 41 in frame deflector coil 40 outsides constitutes.

At first, the poly-principle of green misunderstanding that reduces the face bight is described.

Green as the face bight that occurs in cathode ray tube device is misunderstood gather a kind of, has the horizontal line that is referred to as " VGD " to misunderstand poly-(reference 3, Fig. 4).Fig. 3 has expressed, and in the bight, green emitting uses electron beam 1 with respect to blue-light-emitting electron beam and emitting red light electron beam, the VGD pattern of shift state to the inside.In addition, Fig. 4 shows at the top of face central portion and following central portion, correct convergence commatic aberration (hereinafter referred to as " VCR "), and in the bight, make green emitting use electron beam and emitting red light with electron beam 3 with respect to blue-light-emitting, be the VGD pattern of shift state laterally with electron beam 4.

This VGD can think to take place by following this mechanism.

In other words, peculiar in order to proofread and correct word order formula self-convergent system cathode ray tube device, green emitting uses electron beam 5 with respect to blue-light-emitting electron beam and emitting red light electron beam 6, Pian Yi VCR (Fig. 5) to the inside, the vertical deflection magnetic field of pincushion distortion that can be by the electron gun side zone that is necessary, as shown in Figure 6, use electron beam and emitting red light with electron beam (lateral cord) 8,9 with electron beam (central beam) 7 with respect to blue-light-emitting green emitting, carry out deflection in the vertical direction preparation.After this, green emitting passes through horizontal deflection magnetic field with electron beam 8 and emitting red light with electron beam 9 with electron beam 7, blue-light-emitting, deflects into the face bight.Because VGD is poly-in the misunderstanding in face bight, so be subjected to the distortion effects of horizontal deflection magnetic field in pars intermedia zone big.Prepared deflection green emitting with electron beam 7, than blue illuminating electron beam 8 and emitting red light electron beam, be subjected to the influence of horizontal deflection magnetic field distortion big.Therefore, excessive as the pincushion distortion of the horizontal deflection magnetic field in pars intermedia zone, then resemble VGD pattern as shown in Figure 3, on the contrary, the pincushion distortion deficiency as the horizontal deflection magnetic field in pars intermedia zone then resembles VGD pattern as shown in Figure 4.

Here, as shown in Figure 7, for example, it is contemplated that the situation of the electron beam deflecting to the upper right bight of face, the best pincushion distortion 10 in the pars intermedia zone of horizontal deflection magnetic field is (general, the horizontal deflection magnetic field in the pars intermedia zone of word order formula self-convergent system deflection system, have pincushion distortion) for acting on the downward power 12 of green emitting with electron beam 11, when pincushion distortion is excessive (state of dotted line 13), because acting on green emitting increases with the downward power 14 of electron beam (y direction component), so green emitting electron beam 11 in the face bight,, be offset to the inside with electron beam 15 and emitting red light electron beam 16 with respect to blue-light-emitting.And it is opposite, when pincushion distortion is not enough, reduce with the downward power (y direction component) of electron beam owing to act on green emitting, so at the green emitting electron beam in face bight,, be offset laterally with electron beam and emitting red light electron beam with respect to blue-light-emitting.

So, VGD might be by the pars intermedia zone the distortion of horizontal deflection magnetic field control, if the distortion of the horizontal deflection magnetic field in pars intermedia zone is changed, the right central portion of face and the convergence commatic aberration of left side central portion (hereinafter referred to as " HCR ") are changed.That is, if strengthen the pincushion distortion of the horizontal deflection magnetic field in pars intermedia zone, as shown in Figure 8, then resemble green emitting and to the inside be offset such HCR with electron beam and emitting red light with electron beam 18 with respect to blue-light-emitting with electron beam 17.On the other hand,, as shown in Figure 9, then resemble green emitting and use electron beam and emitting red light with electron beam 20 with respect to blue-light-emitting, be offset such HCR laterally with electron beam 19 if weaken the pincushion distortion of the horizontal deflection magnetic field in pars intermedia zone.Because VGD can control by the horizontal deflection magnetic field distortion in pars intermedia zone, the HCR of Fa Shenging is necessary the horizontal deflection magnetic field distortion by the highly sensitive electron gun side zone of correction HCR thus, and controls.

Based on above discussion, in the example of this enforcement, the absolute value deviation of the pars intermedia zone of horizontal deflection magnetic field that can be by suitably setting deflection system and the secondary distortion factor H2 in electron gun side zone, correction VGD and HCR.

Fig. 1 is magnetic field profile figure on the z axle of secondary distortion factor H2 of horizontal deflection magnetic field of-90 ° of employed deflection systems of cathode ray tube device of 41cm (17 ") of expression the present invention the 1st embodiment, and the maximum of secondary distortion factor H2 is expressed as 100%.As shown in Figure 1, secondary distortion factor H2 has negative value (barrel distortion) near the electron gun place, along with increasing near the face negative value, in the electron gun side flange part position of horizontal deflection coil, (electron gun side zone) then becomes the minimum value H2a that is negative near the inlet face EN of regulation.And as close face, just towards constantly increasing on the occasion of (pincushion distortion), in the position of the fluorescence screen side flange part of above-mentioned inlet face EN and horizontal deflection coil (Figure 17 42), and specified outlet face EX between (pars intermedia zone), become positive maximum H2b.And at close face, secondary distortion factor H2 reduces again gradually.Here, the absolute value of the negative minimum value H2a of expression secondary distortion factor H2 | the absolute value of H2a| and positive maximum H2b | the deviation of H2b|, will be with the absolute value of H2b | the normalized normalization coefficient rh of H2b| (=(| H2b|-|H2a|)/| H2b) be set at-0.06.

Figure 10 is the graph of a relation of expression normalization coefficient rh and VGD and HCR.Usually, from assembling the viewpoint of quality, HCR is set below the 0.1mm.At this moment, normalization coefficient rh is as surpassing 0.19, the absolute value of H2b | H2b| just relatively become excessive (promptly, the pincushion distortion of the horizontal deflection magnetic field in pars intermedia zone became strong), thereby VGD surpasses 0.2mm, dynamic convergence adjustment in the face bight has just become difficulty, can not obtain the good cathode ray tube device of convergence characteristics.And normalization coefficient rh is as not enough-0.30, the absolute value of H2b | H2b| just relatively becomes too small (that is, it is weak that the pincushion distortion of the horizontal deflection magnetic field in pars intermedia zone became), and equally also can not obtain the good cathode ray tube device of convergence characteristics.Thereby, under the situation of present embodiment, normalization coefficient rh wish be-more than 0.30, and below 0.19, if normalization coefficient rh then can reduce VGD and HCR simultaneously more than-0.30 and in the scope below 0.19.Its result, the dynamic convergence adjustment becomes easily, and can access the cathode ray tube device with good convergence characteristics.Particularly, if normalization coefficient rh is more than-0.15, and in the scope below 0.10, can obtain better effect.

For instance, the normalization coefficient rh of the disclosed deflection system of special fair 6-52648 communique is 0.21, and the pincushion distortion of the horizontal deflection magnetic field in pars intermedia zone is excessive, so VGD pattern as shown in Figure 3 takes place easily.

The 2nd example of implementing)

Misunderstand poly-another kind of mode as the green that the face bight of cathode ray tube device takes place, the vertical misunderstanding poly-(with reference to Figure 11, Figure 12) that is referred to as " HGB " is arranged.Figure 11 shows at the right of face central portion and left side central portion and has proofreaied and correct HCR, and in the bight, green emitting is with electron beam 21, with respect to blue-light-emitting with electron beam and emitting red light with electron beam 22, the pattern of the HGB of shift state laterally.And Figure 12 shows at the right of face central portion and left side central portion and has proofreaied and correct HCR, and in the bight, green emitting uses electron beam 23 with respect to blue-light-emitting electron beam and emitting red light electron beam 24 pattern of the HGB of shift state to the inside.

Can think that this HGB is owing to following mechanism takes place.

In other words, peculiar in order to proofread and correct in the word order formula self-convergent system cathode ray tube device, the VCR (Fig. 5) that green emitting is offset with electron beam 6 with electron beam and emitting red light with respect to blue-light-emitting to the inside with electron beam 5, the vertical deflection magnetic field of pincushion distortion that can be by having territory, necessary electronic rifle lateral areas, as shown in Figure 6, make green emitting electron beam (central beam) 7, with electron beam and emitting red light electron beam (lateral cord) 8,9, prepare deflecting into vertical direction with respect to blue-light-emitting.Then, green emitting is used horizontal deflection magnetic field with electron beam 8 and emitting red light with electron beam 9 with electron beam 7, blue-light-emitting, deflect into the bight of face.Because HGB is that the misunderstanding in face bight is poly-, so be subjected to the distortion effects of vertical deflection magnetic field in pars intermedia zone big.The green emitting that has prepared deflection than blue illuminating electron beam 8 and emitting red light electron beam 9, is subjected to the distortion effects of vertical deflection magnetic field big with electron beam 7.Therefore, if the barrel distortion of the vertical deflection magnetic field in pars intermedia zone is excessive, will resemble the HGB of pattern as shown in Figure 11.On the contrary, if the barrel distortion of the vertical deflection magnetic field in pars intermedia zone is not enough, will resemble the HGB of pattern as shown in Figure 12.

Here, as shown in figure 13, for example, can think the situation of the electron beam deflecting to the upper right bight of face, the best barrel distortion 25 in the pars intermedia zone of vertical deflection magnetic field is (general, the vertical deflection magnetic field in the pars intermedia zone of word order formula self-convergent system deflection system, has barrel distortion), for acting on the outside power 27 (x direction component) of green emitting with electron beam 26, when barrel distortion is excessive (state of dotted line 28), owing to act on outside power 29 (the x direction component) increase of green emitting, be offset laterally with electron beam 31 with electron beam 30 and emitting red light with respect to blue-light-emitting with electron beam 26 at the green emitting in face bight with electron beam 26.And it is opposite, when barrel distortion is not enough, reduce with the outside power (x direction component) of electron beam owing to act on green emitting, so at the green emitting electron beam in face bight,, be offset to the inside with electron beam and emitting red light electron beam with respect to blue-light-emitting.

Like this, the distortion of the vertical deflection magnetic field that HGB might be by the pars intermedia zone is controlled, if the distortion of the vertical deflection magnetic field in pars intermedia zone is changed, the top central portion of face and the VCR of following central portion also just change.In other words, if the barrel distortion of the vertical deflection magnetic field in pars intermedia zone is strengthened, as shown in figure 14, green emitting will take place use electron beam and emitting red light with electron beam 33 with electron beam 32 with respect to blue-light-emitting, be the VCR of shift state to the inside.On the other hand, if the barrel distortion of the vertical deflection magnetic field in pars intermedia zone weakens, as shown in figure 15, with respect to blue-light-emitting electron beam and emitting red light electron beam 35, the electron beam 34 that green emitting is used will produce the VCR of shift state laterally.Thereby HGB can control in the vertical deflection magnetic field distortion by the pars intermedia zone, and the VCR of Fa Shenging thus is necessary to use the distortion of the vertical deflection magnetic field in the high electron gun side zone of VCR correcting sensitivity is controlled.

Based on above discussion, in the example of this enforcement, HGB and VCR just can be proofreaied and correct simultaneously in the pars intermedia zone of vertical deflection magnetic field that can be by suitably setting deflection system and the absolute value deviation of the secondary distortion factor V2 in electron gun side zone.

Fig. 2 is magnetic field profile figure on the z axle of secondary distortion factor V2 of vertical deflection magnetic field of-90 ° of employed deflection systems of cathode ray tube device of 41cm (17 ") of expression the present invention the 2nd embodiment, and with secondary distortion factor V ₂Maximum be expressed as 100%.As shown in Figure 2, secondary distortion factor V2 has near electron gun on the occasion of (pincushion distortion), along with near face on the occasion of increase, in the electron gun side flange part position of horizontal deflection coil, (electron gun side zone) becomes positive maximum V2a near the inlet face EN of regulation.And one near face, just reduce towards negative value (barrel distortion), in the position of the fluorescence screen side flange part of above-mentioned inlet face EN and horizontal deflection coil (Figure 17 42), and specified outlet face EX between (pars intermedia zone), become negative minimum value H2b.And as close face, secondary distortion factor V2 increases again gradually.Here, the absolute value of the positive maximum V2a of expression secondary distortion factor V2 | the absolute value of V2a| and the minimum value V2b that bears | the deviation of V2b|, absolute value with V2b | the normalized normalization coefficient rv of V2b| (=(| V2b|-|V2a|)/| V2b) be set at-0.35.

Figure 16 is the graph of a relation of expression normalization coefficient rv and HGB and VCR.Usually, from assembling the viewpoint of quality, VCR is set in below the 0.1mm.At this moment, normalization coefficient rv is as surpassing-0.08, the absolute value of V2b | V2b| just relatively become excessive (promptly, the barrel distortion of the vertical deflection magnetic field in pars intermedia zone became strong), thereby, HGB surpasses 0.2mm, and the dynamic convergence adjustment in face bight has become difficulty, just can not obtain the good cathode ray tube device of convergence characteristics.And normalization coefficient rv is as not enough-0.62, the absolute value of V2b | V2b| relatively becomes too small (that is, it is weak that the barrel distortion of the vertical deflection magnetic field in pars intermedia zone became), equally also can not obtain having the cathode ray tube device of good convergence characteristics.Thereby under the situation of present embodiment, normalization coefficient rv wishes it is more than-0.62, and below-0.08, and if normalization coefficient rv is more than-0.62, and in the scope below-0.08, just can reduce HGB and VCR simultaneously.Its result, the dynamic convergence adjustment becomes easily, thereby can access the cathode ray tube device with good convergence characteristics.Particularly, if normalization coefficient rv in the scope below-0.21, then can obtain better effect more than-0.49.

For instance, the normalization rv of the disclosed deflection system of special fair 6-52648 communique is-2.45, and the barrel distortion deficiency of the vertical deflection magnetic field in pars intermedia zone, so resemble easily the HGB pattern shown in Figure 12.

Also having, in an embodiment above-mentioned, is that the situation of saddle type is the example explanation with horizontal deflection coil and frame deflector coil, yet, be not limited to the cathode ray tube device of this formation, horizontal deflection coil and frame deflector coil any or both also can be the spiral cast coils.

And, in the above-described embodiments, be only applicable to the occasion of horizontal deflection coil with the present invention, with the occasion that is only applicable to frame deflector coil with the present invention be that example describes, as make the present invention be applicable to horizontal deflection coil and frame deflector coil, then can obtain to have the cathode ray tube device of better convergence characteristics.

As mentioned above, according to cathode ray tube device of the present invention, for the green of proofreading and correct the face bight is misunderstood poly-, and the distortion in the pars intermedia zone of control magnetic deflection field, and then, for the correct convergence commatic aberration, by the distortion in electron gun side zone of control magnetic deflection field, and the value of the distortion factor of the magnetic deflection field in setting pars intermedia zone and electron gun side zone, the green of assembling commatic aberration and face bight is misunderstood gather optimization.Its result, the dynamic convergence adjustment becomes easily, and can obtain to have the cathode ray tube device of good convergence characteristics.

Claims

1, a kind of cathode ray tube device, it is to be equipped with: face glass; Has cathode-ray tube body with the back-connected glass funnel of above-mentioned face glass; Be arranged at the electron gun of above-mentioned cathode ray tube rear body; And has the horizontal deflection coil that is disposed at above-mentioned cathode ray tube rear body periphery at least, be arranged at the cathode ray tube device of the deflection system of the frame deflector coil in the above-mentioned horizontal deflection coil outside and magnetic core, it is characterized in that, represent horizontal deflection magnetic field that above-mentioned deflection system produces, with meet at right angles magnetic field profile on the Z axle of secondary distortion factor H2 of yawing moment change in magnetic flux density curvature of section of the central shaft of coil, near the inlet face of the regulation of the above-mentioned electron gun side flange part position of above-mentioned horizontal deflection coil, has negative minimum value H2a, the fluorescence screen side flange part position of above-mentioned inlet face and above-mentioned horizontal deflection coil and the specified outlet face between, has positive maximum H2b, deviation between the absolute value of the absolute value of the minimum value H2a that expression is negative and positive maximum H2b, with the normalized coefficient rh of the absolute value of positive maximum H2b more than-0.30 and below 0.19, this coefficient rh=|H2b|-|H2a|/| H2b|.

2, a kind of cathode ray tube device, it is to be equipped with: face glass; Has cathode-ray tube body with the back-connected glass funnel of above-mentioned face glass; Be arranged at the electron gun of above-mentioned cathode ray tube rear body, and has the horizontal deflection coil that is disposed at above-mentioned cathode ray tube rear body periphery at least, be arranged at the cathode ray tube device of the deflection system of the frame deflector coil in the above-mentioned horizontal deflection coil outside and magnetic core, it is characterized in that, represent vertical deflection magnetic field that above-mentioned deflection system produces, with the central shaft of the coil magnetic field profile on the Z axle of the secondary distortion factor V2 of change in magnetic flux density curvature on the yawing moment of section that meets at right angles, near the inlet face of the regulation of the above-mentioned electron gun side flange part position of above-mentioned horizontal deflection coil, has positive maximum V2a, the fluorescence screen side flange part position of above-mentioned inlet face and above-mentioned horizontal deflection coil and the specified outlet face between, has negative minimum value V2b, represent the deviation between the absolute value of the absolute value of positive maximum V2a and negative minimum value V2b, with the normalized coefficient rv of absolute value of negative minimum value V2b more than-0.62 and below-0.08, this coefficient rv=|V2b|-|V2a|/| V2b|.