JPH0315453U - - Google Patents

Description

[Brief explanation of drawings]

Figures 1 to 12 are explanatory diagrams of embodiments of this invention, in which Figure 1 is a configuration diagram of a color picture tube device according to one embodiment, and Figure 2 is a deflection device and a pair of permanent magnet combinations for this deflection device. A diagram showing the placement of the body,
Figure 3 shows the electrode structure constituting the main lens part of the electron gun structure, and Figure 4 shows the pincushion magnetic field of a pair of permanent magnet combinations arranged above and below with the horizontal axis in between. Figures 5 and 6 are diagrams for explaining the static convergence effect of a pincushion type magnetic field and the static convergence effect of a pair of permanent magnet combinations, respectively, and a conventional electron gun assembly shown for comparison. Figure 7 is a diagram showing the electrode structure constituting the main lens section for static convergence; Figure 7 is a diagram to explain the non-rotationally symmetrical lens function of the pink tension magnetic field generated by a pair of permanent magnet combinations; Figure 8 is a diagram showing the relationship between the leakage magnetic field of a pair of permanent magnet assemblies and a correction piece for correcting convergence, FIG. 9 is a diagram showing different arrangements of the pair of permanent magnet assemblies with respect to the deflection device, and FIG. 10 is a diagram of the pair. FIG. 11 is a diagram for explaining the effect of the pink-tension magnetic field of the permanent magnet assembly on the spot of the electron beam, and FIG. , Fig. 12 is a diagram showing a further different arrangement of a pair of permanent magnet combinations with respect to the deflection device, Fig. 13 is a configuration diagram of a conventional color picture tube device, and Fig. 14 is a diagram showing electrons deflected by the uniform magnetic field of the deflection device. Figure 15 is an explanatory diagram of the spot shape of the electron beam deflected by the non-uniform magnetic field of the deflection device. Figures 16a and b are the pincushion horizontal deflection magnetic field and barrel shape for the electron beam, respectively. FIG. 17 is a diagram for explaining the influence of a vertical deflection magnetic field, and FIG.
The figure shows the magnetic field of the pair of permanent magnets. 9...Deflection device, 10...Horizontal deflection coil, 1
1...Vertical deflection coil, 20...Electron gun structure, 2
4... Electron gun structure side end of the deflection device, 25a-2
5d... Permanent magnet assembly, 26a, 26b... Permanent magnet, 27... Magnetic piece, B, R... Pair of side beams, G... Center beam.

Claims (1)

[Scope of utility model registration request] an electron gun assembly that emits a plurality of electron beams arranged in a row passing on the same plane; a first deflection coil that mainly forms a pincushion type deflection magnetic field that deflects the plurality of electron beams in the direction in which the plurality of electron beams are arranged; A second field forming a primarily barrel-shaped deflection field deflecting in a direction perpendicular to the
A permanent magnet combination includes a deflection device including a deflection coil, and two permanent magnets arranged in parallel such that one magnetic pole is located on the electron gun assembly side and the magnetic poles on the electron gun assembly side are opposite magnetic poles. The deflector body is arranged to generate a pink tension magnetic field on the path of the plurality of electron beams on the electron gun structure side of the deflection device in response to the deflection magnetic field of at least one of the first and second deflection coils. a pair of permanent magnet assemblies; a magnetic piece disposed on the opposite side of the electron gun assembly to each of the pair of permanent magnet assemblies, and magnetically coupled to each permanent magnet of the pair of permanent magnet assemblies; A color picture tube device comprising: