KR860000360B1 - In-line color display - Google Patents

Abstract

A residual misconvergence is corrected by a dynamic convergence- correction device disposed between a self-convergence deflection yoke and a static convergence correction magnet assembly, which are both mounted on the neck portion of the CRT tube. The assembly comprises a non-magnetic support member, eight coil assemblies having cores fixedly disposed on the support member concentric to the tube axis with mutual circumferential spacings, and coils wound on the cores.

Description

In-line color water pipe device

1 is a schematic side view of a first embodiment of an inline color water pipe apparatus according to the present invention;

2 is a perspective view of a portion of a dynamic convergence correction means in the first embodiment.

3 is a diagram illustrating arrangement of coils.

4 to 7 are explanatory diagrams showing a state in which 4-pole and 6-pole magnetic fields are generated by each coil.

FIG. 8 is a diagram showing an example of series connection of coils for generating the magnetic field shown in FIGS. 4-7. FIG.

9 is a diagram showing an example of parallel connection of coils for generating the magnetic field.

10 (a) and 10 (b) are diagrams for explaining windings of a single coil and a double coil, respectively.

11 is a side view of a second embodiment of an inline color water pipe device according to the present invention;

12 is a plan view of a coil assembly of a dynamic convergence correction device according to a second embodiment.

Fig. 13 is a block diagram showing an example of a driving circuit of a coil assembly of a dynamic convergence correction device according to the present invention.

14 is a diagram for explaining a screen pattern.

TECHNICAL FIELD This invention relates to the inline color water pipe | tube apparatus with a dynamic converence correction apparatus suitable for the apparatus which requires a high definition image, for example.

Background Art Conventionally, static convergence correction in an inline color water pipe is generally performed by a four-pole ring magnet and a six-pole ring magnet placed around the neck portion. However, in the case of performing the static converence correction by moving the two ring magnets in this way, since the mechanical operation is required, the correction work becomes very difficult, and there is a problem that the work requires skill. In order to solve this problem, eight coils are installed at 45 ° intervals around the outside of the neck and a 4-pole field having a horizontal axis (in-line electron gun array direction) by flowing a DC current through the coil, and a 45 ° horizontal axis. By generating four-pole magnetic field with axes forming a six-pole, six-pole magnetic field with a horizontal axis, and six-pole magnetic field with a vertical axis, and correcting the horizontal and vertical directions of the outer beams of three electron beams in line An apparatus has been proposed that corrects the horizontal and vertical directions of the outer beam and the center beam to perform static convergence correction (Japanese Patent Laid-Open No. 51-71723).

However, in the case of using the static convection correction autonomous value, the static convection correction can be smoothly performed. However, in the case of fixed customs, high accuracy is achieved even around the screen even if the self-convergence deflection yoke is used. It is difficult to perform the convergence correction. In particular, when fixed customs are used as the terminal display device of the computer, it is necessary to clearly display the Chinese characters to the periphery of the screen, but this is difficult in the conventional device.

For this reason, a means of correcting the residual misconvergence which is not corrected by the self-convergence deflection yoke is required, but the dynamic converger has good sensitivity and furthermore, its self-convergence does not disturb the magnetic field of the deflection yoke. Aggression correction means have not been considered in the past.

As is well known, the provision of dynamic convergence correction means in the delta type electron gun color receiver is essential for the operation of the receiver tube, but there is still no in-line color receiver apparatus equipped with the dynamic convergence correction means. not.

SUMMARY OF THE INVENTION An object of the present invention is to provide an in-line color water correlator with a novel dynamic convergence correction autonomous suitable for use in fixed customs.

Another object of the present invention is to provide an in-line color water pipe device equipped with a dynamic convergence correction device having good sensitivity by attaching the dynamic convergence correction device to the deflection yoke.

It is still another object of the present invention to provide an inline color water-receiving device with a dynamic convergence correction device having improved sensitivity and reducing disturbance to nearby elements by using a rod core in the dynamic convergence correction device. .

Another object of the present invention is to provide an in-line color receiver apparatus equipped with a dynamic convergence correction device which reduces the disturbance to the deflection yoke by attaching the dynamic convergence correction autonomous to the correction magnet assembly.

It is still another object of the present invention to use a multi-layer winding coil in a dynamic converence correction device, which makes it possible to equalize the effect of the magnetic field generated by each coil on the electron beam and at the same time improve the spot ratio. The present invention provides an inline color water pipe device with a convergence correction device.

According to the present invention, a self-convergence deflection yoke, a self-convergence deflection yoke, a correction magnet assembly made of a purity correction magnet and a self-convergence deflection yoke, Equivalent convection correction means placed between the correction magnet assemblies is provided, and this dynamic conveyor correction means has eight magnetic cores arranged in a concentric circle on a support shaft and a tube axis of a nonmagnetic material and fixed to the support, It consists of a plurality of coils wound on each coil, each coil generates a 4-pole magnetic field with a horizontal axis, a 6-pole magnetic field with a horizontal axis, a 4-pole magnetic field with an axis making an angle of 45 ° with the horizontal axis, and a 6-pole magnetic field with a vertical axis, respectively. And a means for transmitting the dynamic correction signal of a predetermined amplitude and direction to these coils at a predetermined timing in accordance with the deflection synchronization signal. An inline color water tube device with a converence correction device is provided.

In FIG. 1, (1) is a panel part of a high-definition inline color water pipe, (2) is a panel part, and (3) is a neck part incorporating an electron gun. (4) is the self-convergence deflection yoke mounted on the outer periphery of the panel part (2) side of the neck part (3), and (5) is a dynamic installed on the tank gun side of the self-convergence deflection yoke (4). Convergence correction device (6) is a static Convergence correction magnet and a purity correction magnet assembly mounted around the outside of the neck (3).

In Fig. 2, reference numeral 7 denotes a deflection coil wound around the self-convergence deflection yoke 4, 8 denotes a fringe portion of the self-convergence deflection yoke 4, and Is a non-magnetic material formed in the shape of a disc, and has a hole portion 10 for inserting the neck portion 3 in the center, a support having an arc-shaped elongated grooves 11a and 11b at a position 180 ° away from the periphery, (14 ) Is a coil assembly including a magnetic core 12 fixed to a support 9 by an attachment portion 13 made of a magnetic material formed in a rectangular bar shape, and a coil 14a wound around the magnetic core 12, and 15 is long. It is a fixing screw inserted into the fringe portion 8 through the grooves 11a and 11b.

After the self-convenience deflection yoke 4 is mounted on the neck portion 3, the support 9 is turned to adjust the centerline of the coil assembly 14 opposite in the horizontal position to coincide with the horizontal axis of the inline electron beam. In this state, the fixing screw 15 is tightened to fix the support 9 to the fringe portion 8.

Moreover, eight magnetic cores 12 and coils 14a are radially mounted on a plane perpendicular to the tube axis and radially at an interval of 45 ° on the tube axis. Furthermore, the center line of each coil assembly 14 is 1 in the tube axis. It is arranged to focus on points.

Next, the four-pole and six-pole fields formed by the eight coil assemblies 14 will be described.

3 is an explanatory diagram of arrangement of the coil 14a. These coils are connected in series or in parallel to external terminals (terminals of an excitation power supply) as shown in FIG. 8 or FIG. That is, the coils A ₁ (A ₂ ) (A ₃ ) (A ₄ ) are connected in series or in parallel to the first external terminal T _A , and the coils B ₁ (B ₂ ) (B ₃ ). ) B ₄ is connected in series or in parallel to the second external terminal T _B , and the coil C ₁ (C ₂ ) (C ₃ ) (C ₄ ) (C ₅ ) (C ₆ ) Are connected in series or in parallel and connected to a third external terminal (T _C ), and coils (D ₁ ) (D ₂ ) (D ₃ ) (D ₄ ) (D ₅ ) (D ₆ ) are connected in series or in parallel It may be connected to an external terminal (T _D) of claim 4. And coils (A ₁ ) and (C ₁ ), coils (B ₁ ) and (C ₂ ) and (D ₁ ), coils (A ₁ ) and (D ₂ ), coils (B ₂ ) and (C ₃ ) And (D ₃ ), coils (A ₃ ) and (C ₄ ), coils (B ₃ ) and (C ₅ ) and (D ₄ ), coils (A ₄ ) and (D ₅ ), coils (B ₄ ) and (C ₆ ) are each wound around the same magnetic core. In addition, coil A ₁ (A ₂ ) (A ₃ ) (A ₄ ), (B ₁ ) (B ₂ ) (B ₃ ) (B ₄ ), (C ₁ ) (C ₂ ) (C ₃ ) ( C ₄ ) is wound N times, and coils C ₂ (C ₃ ) (C ₅ ) (C ₆ ) and (D ₁ ) (D ₃ ) (D ₄ ) (D ₆ ) are wound N / t1 times. .

For example, the coil assembly group shown by the symbol A in FIGS. 8 and 9 forms a coil A ₁ (C ₁ ); (A ₂ ) (D ₂ ), (A ₃ ) ( _{C 4); (a 4)} (D 5) if each of 28 the circuit the number of turns, winding number of the coil _{(B 1) (B 2)} (B 3) (B 4) of the inner forming the coil assembly group (B) is a However, the number of turns of the other coils C ₂ (D ₁ ); (C ₃ ) (D ₃ ); (C ₅ ) (D ₄ ); (C ₆ ) (D ₆ ) is 28 times each.

Here, in the driving circuit described later, when a current flows through the first external terminal T _A and the second external terminal T _B , a quadrupole field is generated, and the third external terminal T _C and the fourth When a current flows through the external terminal T _D , a 6-pole magnetic field is generated.

4 to 7 are explanatory diagrams showing a state in which a 4-pole or 6-pole magnetic field is generated by each coil.

In Fig. 4, reference numeral 16 denotes a central electron beam, and reference numeral 17 and 18 denote left and right outer electron beams. When a current in a predetermined direction flows through the coils A _{1 to} A ₄ , a 4-pole magnetic field is generated in the direction of the arrow. This quadrupole field has a horizontal axis 19 coinciding with the array horizontal axis of the electron beams 16, 17, 18. The outer electron beams 17 and 18 move in the up and down opposite directions because horizontal magnetic fields in opposite directions act on each other.

In FIG. 5, when a current in a predetermined direction flows through the coils B _{1 to} B ₄ , a four-pole magnetic field having an axis 20 formed at an angle of 45 ° with respect to the horizontal axis is generated. As a result, the outer electron beams 17 and 18 move in left and right opposite directions because vertical magnetic fields in opposite directions act.

In FIG. ₆ , when a current in a predetermined direction flows through the coils D _{1 to} D ₆ , a six-pole field having a horizontal axis 21 coinciding with the array horizontal axis is generated. As a result, the outer electron beams 17 and 18 move in the same direction in the vertical direction because the vertical magnetic fields in opposite directions act. In addition, each coil does not have a forward hexagonal arrangement, the coil _{(D 1) (D 3)} (D 4) of the turns (D ₆₎ and correcting it as hameuroseo N t2.

In FIG. 7, a six-pole field having a vertical axis 22 is generated when a current in a predetermined direction flows through the coils C _{1 to} C ₆ . As a result, the outside electron beams 17 and 18 move in the same direction to the left and right because vertical magnetic fields in the same direction act.

Therefore, when a predetermined amount of current flows to each external terminal from the driving circuit described later in accordance with the scanning timing, accurate dynamic converging correction can be performed over the entire screen.

In this embodiment, the dynamic convergence correction means 5 has its own convergence deflection.

Since it is attached between the chuck 4 and the static converence correction magnet assembly 6, in particular to the deflection yoke 4, the installation site is closest to the fluorescent surface side of the panel 1. In general, when the deficit ratio is fixed in the magnetic field, the closer the magnetic field action position is to the fluorescent surface side, the better the sensitivity. In this embodiment, the dynamic converence correction means is arranged at the position where the best sensitivity can be obtained. . However, when the coil 14 is centered, large power is still required for the driving circuit due to lack of sensitivity, and the reliability of the driving circuit is deteriorated. However, when the coil 14a is wound around the magnetic core 12, the generated magnetic field is greatly strengthened, and the sensitivity of decorating the electron beam is about 10 times higher than that of the air core. Here, as a magnetic core, when using a ring-type centered on the tube axis as in the prior art, the leakage magnetic flux of the self-convergence deflection yoke 4 is classified into this ring, and moreover, the influence becomes larger as both are closer. As a result, the deflection field is disturbed, which adversely affects the convergence and purity around the screen. However, if eight rod-shaped magnetic cores are separated and the coil 12 is wound around it, the leakage magnetic flux from the deflection yoke is not classified, so it has little influence on the converence and purity around the screen. Do not give. As the magnetic core 12 of the magnetic body approaches, the deflection magnetic field of the deflection yoke is influenced to some extent, but when adjusting the shaking of the self-convergence deflection yoke 4, the magnetic core 12 is also integrated with this. Since it moves by, the influence by the magnetic core 12 can be corrected by this adjustment.

As described above, in the case of using the rod-shaped magnetic core 12, as shown in FIGS. 10 (a) and 10 (b), the magnetic core 12 is inserted into the bobbin formed with the attachment portion 13 and adjusted therein. (μ adjustment), the coil is wound around this bobbin.

As shown in FIG. 10 (a), when the first and second coils are wound in the longitudinal direction of the bobbin 13, and a coil assembly of one layer composed of the first and second coils is formed, Most of the magnetic flux generated by the second coil in the near side becomes an effective magnetic flux acting on the electron beam, but a part of the magnetic flux generated by the first coil far away from the electron beam becomes the leakage magnetic flux and thus the effective magnetic flux acting on the electron beam Decreases. On the other hand, as shown in FIG. 10 (b), when the first and second coils are wound in two layers (generally in a multi-layer, leakage magnetic flux is reduced, and the difference in magnetic flux density given to the electron beam where the first and second coils are generated is In the multilayer winding as shown in Fig. 10 (b), the bobbin may have a short length, so that the spot ratio is good, and from this point of view, the coil assembly of the present invention has a multilayer winding structure.

Next, Fig. 11 shows another embodiment of the present invention, in which the same parts as those in the previous drawings are denoted by the same numerals.

In the neck portion 3, the ring portion locks a ring magnet 62 for adjusting the static convergence and purity on a cylindrical holder 61 having a rim portion 60 on the deflection yoke 4 side. The magnet assembly 6 mounted with 63) is firmly tightened and fixed by the band-shaped fastener 64. In this case, a plurality of grooves are formed in the cylindrical portion of the holder 61 in the tube axis direction, and the diameter of the cylindrical portion is deformed so that the diameter of the cylindrical portion is reduced by the fastening force of the band-shaped fastener 64. It is in close contact with each other and the holder 61 is fixedly arranged. In addition, on the neck portion 3 of the holder 61, the eight coil assemblies 14 are evenly disposed on the heat-sensitive substrate 20 at 45 ° intervals as shown in the plan view in FIG. In addition, a dynamic convergence correction device 5 having a plurality of threaded through holes 8a is provided via a spacer 22 made of an insulating material on a screw 21 made of a nonmagnetic material mounted on the rim portion 60. It is inserted and fixed with the nut 23 of a nonmagnetic material. In this case, the insulating substrate 20 is made of a printed board, and the wiring of each coil assembly 14 is formed by the printed wiring.

According to this structure, the dynamic converence correction device 5 is integrally attached and fixed to the magnet assembly 6, and the magnet assembly 6 is firmly tightened to the neck part 3 with the fastener 64. Since it is fixed, the dynamic convergence correction device 5 can be reliably and firmly supported and fixed to the water pipe neck portion 3. Therefore, a special support fixing mechanism is not necessary for the dynamic converence device 5, and the support fixing means is simplified in a small size, thereby making it extremely easy to adjust dynamic correction and correction for the static convolution. . In addition, since the correction device 5 of the present embodiment is installed between the deflection yoke 4 and the static convergence correction magnet assembly 6, not only the sensitivity characteristic equivalent to the embodiment of FIG. 1 is obtained, Since it is arranged away from the deflection yoke, the disturbance which this device 5 gives to the deflection yoke 4 is reduced.

Also in FIG. 12, it goes without saying that each coil assembly 14 of each coil assembly group (A) (B) is wired like FIG. Reference numeral 24 denotes a lead wire to the drive circuit.

13 is a block diagram of a driving circuit for supplying a dynamic correction signal to a coil. The input video signal is input to the signal terminal of the color receiver via a video amplification circuit (not shown) and is also supplied to the synchronous separation circuit 50 so that the horizontal synchronous signal Hs and the vertical synchronous signal Vs are supplied from the circuit 50. ) Is output.

The horizontal synchronizing signal Hs and the vertical synchronizing signal Vs are input to the oscillator 51 which forms a PLL (Phase Locked Loop) consisting of an oscillation circuit and a counter. The horizontal clock signal Hc is generated during the period, and the vertical clock signal Vc is generated during the interval period of the vertical synchronization signal which is sequentially generated. This clock signal (Hc) (Vc) has a period equivalent to the horizontal length (period) (hc) and vertical length (period) (Vc) of one compartment divided into a plurality of sections as shown in FIG. have. The horizontal clock signal Hc and the resin clock signal Vc are converted into an address signal of each section by the zone address generation circuit 52 and input to the multiplexer 53. Since the synchronous separation circuit 50, the oscillator 51 and the partition address generator 52 are well known in the art, detailed description thereof will be omitted.

During the correction operation, the multiplexer 53 switches the partition address from the partition address generator 52 to be transmitted to the correction data storage device 56, and the correction data storage device 56 corresponds to the scanning beam position. The correction data of the compartment address is leaked out, and the D / A 59 converts the correction data into a current signal to excite the dynamic convergence correction coil assembly 14.

On the other hand, when the horizontal address selector 54 and the vertical address selector 55, which are switch groups at the time of adjustment, are switched to select a desired section and the selection signal is input to the multiplexer 53, The address signal of the selected section is stored in the correction data storage device 56 made of RAM or the like.

Further, the data input unit 57 of the switch group is operated by switching to view the screen, and the amount of convergence correction at the center of each section is set. It is determined by interpolation using the correction amount of the part out of the center. This setting signal is input to the storage device 56 associated with the desired coil assembly 14 via the multiplexer 58, and the correction amount of each section is stored. Four memory devices 28 are provided corresponding to the respective external terminals, and the setting signals are switched by the multiplexer 58 and input to each memory device. In addition, although the address signal output from the multiplexer 53 is not shown, it is input to each memory | storage device 56 in parallel. In use, when scanning the section at a timing corresponding to each section, the data of the correction amount stored in each storage device 56 is output as a dynamic correction signal, and the analog amount is output to the DA converter 59. Is converted to the amplifier 6, amplified by the amplifier 6, and then supplied to the coil assembly 14 from each external terminal.

By the above operation, the convergence is corrected over the full screen by the dynamic convergence correction means 5.

As described above, according to the in-line color water-receiving apparatus equipped with the dynamic converence correction device according to the present invention, the self-convergence deflection yoke is provided with a dynamic converence correction means in which coils are wound around eight magnetic cores arranged in a circular shape apart from each other. And a magnetic magnet assembly, and the coil is properly connected so that a predetermined amount of dynamic correction current flows in the coil at a predetermined timing corresponding to the deflection synchronous signal. Furthermore, it is possible to perform dynamic convergence correction with high sensitivity, without giving a bias to the deflection field, and there is an excellent effect of obtaining a high-definition image on the full screen.

Claims (4)

In-line color water pipe, a self-convergence deflection yoke, a correction magnet assembly consisting of a static convection correction magnet and a purity correction magnet, and a dynamic converberation installed between the self-convergence deflection yoke and the correction magnet assembly. The dynamic converging correction means includes a support made of a nonmagnetic material, eight magnetic cores arranged at a distance from the concentric distal to the tube axis and fixed to the support, and a plurality of coils wound around the magnetic core. Each coil is wired to generate a 4-pole field with a horizontal axis, a 6-pole field with a horizontal axis, a 4-pole field with an axis at an angle of 45 ° to the horizontal axis, and a 6-pole field with a vertical axis, respectively. A dynamic converence correction device having means for causing a dynamic correction signal of a predetermined straight width and direction to flow at a predetermined timing in accordance with the deflection synchronization signal In-line color kinescope device attached. The in-line color water pipe apparatus according to claim 1, wherein the dynamic convergence correction means is attached to the self-convergence deflection yoke via the support. The in-line color water pipe apparatus according to claim 1, wherein the dynamic converence correction means is attached to the static converence correction magnet assembly via the support. The in-line color water pipe device according to claim 1, 2 or 3, wherein the plurality of coils are wound in multiple layers on a magnetic core.

Images